CN117233599B - Radial magnetic bearing stator testing device and stator testing system - Google Patents
Radial magnetic bearing stator testing device and stator testing system Download PDFInfo
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- CN117233599B CN117233599B CN202311169244.8A CN202311169244A CN117233599B CN 117233599 B CN117233599 B CN 117233599B CN 202311169244 A CN202311169244 A CN 202311169244A CN 117233599 B CN117233599 B CN 117233599B
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Abstract
The application discloses a radial magnetic bearing stator testing device and a stator testing system, which relate to the technical field of magnetic bearing stator testing equipment, wherein the radial magnetic bearing stator testing device comprises a testing table, a sensing mechanism, a rotating mechanism, a lifting mechanism and an electrical control system, the testing table comprises a table panel and a table frame, and the table panel is provided with a radial stator positioning chuck; the sensing mechanism comprises a sensing assembly and a sensing installation assembly, and the rotating mechanism comprises a rotating installation assembly and a rotating driving assembly; the lifting mechanism can lift the radial Hall sensor to a position corresponding to the electromagnet coil, and the induction iron block is lifted to a position corresponding to the displacement sensor; the electrical control system comprises an electrical control unit, a north-south pole test unit and an inductance test unit; the testing device can be used for rapidly testing whether the electromagnetic coil of the radial magnetic bearing stator and the outgoing line of the displacement sensor are correct or not, and the testing efficiency is improved.
Description
Technical Field
The application relates to the technical field of magnetic bearing stator testing equipment, in particular to a radial magnetic bearing stator testing device and a stator testing system.
Background
The magnetic bearing utilizes the magnetic force to suspend the rotor in the air, so that the rotor and the stator are free from mechanical contact, compared with the traditional bearing, the magnetic bearing has no mechanical contact, the rotor can run to a very high rotating speed, and the magnetic bearing has the advantages of small mechanical abrasion, small noise, long service life, no need of lubrication and the like, so that the magnetic bearing is widely applied to motors.
According to the constraint mode of the freedom degree of the supporting rotor, the magnetic bearing is divided into a radial magnetic bearing and an axial magnetic bearing, the radial magnetic bearing comprises a radial magnetic bearing stator and a radial magnetic bearing rotor, the axial magnetic bearing comprises an axial magnetic bearing stator and an axial magnetic bearing rotor, the radial magnetic bearing stator comprises a stator iron core, an electromagnet coil, an axial displacement sensor and a radial displacement sensor, the processing, manufacturing and packaging process of the parts are complex, the electromagnet coil and the outgoing line error of the displacement sensor are easy to occur in the manufacturing and packaging process, and the radial magnetic bearing cannot normally generate a magnetic field or normally detect the offset position of the rotor.
In order to judge whether the lead-out wire of the radial magnetic bearing stator has errors, a factory test is generally carried out in a manufacturing factory, after the related parts of the magnetic bearing motor are integrally assembled, an electrifying idle load test or a load test is carried out, and if the test is qualified, the related radial magnetic bearing stator is determined to be qualified, if the problem occurs in the whole machine test, the whole machine is required to be disassembled, unqualified parts are replaced, the whole operation process is complex, the period is long, the efficiency is low, and the method is not suitable for testing radial magnetic bearing stators produced in a large scale.
In view of the above related art, the inventor considers that the radial magnetic bearing stator has the defects of low efficiency and long period in the qualification test of the lead wire of the radial magnetic bearing stator in the manufacturing process.
Disclosure of Invention
In order to solve the problem of low qualification test efficiency of a radial magnetic bearing stator lead wire, the application provides a radial magnetic bearing stator test device and a stator test system.
In a first aspect, the present application provides a radial magnetic bearing stator testing device, which adopts the following technical scheme:
A radial magnetic bearing stator testing apparatus comprising:
the test bench comprises a bench panel and a bench for supporting the bench panel, wherein the bench panel can be used for placing a radial stator positioning chuck for positioning a radial magnetic bearing stator to be tested;
The sensing mechanism comprises a sensing assembly and a sensing installation assembly used for installing the sensing assembly, wherein the sensing assembly comprises a radial Hall sensor capable of sensing the polarity of an electromagnet coil of a radial magnetic bearing stator and an induction iron block capable of sensing the displacement sensor of the radial magnetic bearing stator; the radial Hall sensor and the induction iron block are arranged on the sensing installation component;
A rotation mechanism including a rotation mounting assembly for mounting the sensing mounting assembly, a rotation driving assembly capable of driving the sensing mounting assembly to rotate;
The lifting mechanism can lift the rotating mechanism to a position corresponding to the radial Hall sensor positioned on the electromagnet coil or a position corresponding to the displacement sensor;
the electric control system comprises an electric control unit, a north-south pole test unit and an inductance test unit; the electric control unit is electrically connected with the north-south pole testing unit, the inductance testing unit, the electromagnet coil, the displacement sensor and the radial Hall sensor, and the north-south pole testing unit is electrically connected with the radial Hall sensor.
By adopting the technical scheme, the electric control unit controls the lifting mechanism and the rotating mechanism, the lifting mechanism lifts the radial Hall sensor to the corresponding height position of the electromagnet coil, the rotating mechanism rotates the radial Hall sensor to the position of the electromagnet coil to be tested, the electric control unit electrifies the electromagnet coil to be tested, the electromagnet coil to be tested generates a corresponding polar magnetic field, the north-south pole testing unit tests the output signal of the radial Hall sensor under the action of the polar magnetic field, and the electric control unit compares the output signal with the standard signal to obtain whether the wiring of the electromagnet coil is correct; the lifting mechanism lifts the induction iron block to the height position corresponding to the displacement sensor, the rotating mechanism rotates the induction iron block to the position of the displacement sensor to be detected, the electric control unit electrifies the displacement sensor to be detected, if the induction iron block is close to the position, the inductance measured by the inductance testing unit is far greater than the standard value, the actual measured position value is compared with the theoretical design position value, whether the position of the outgoing line is correct is judged, and the radial magnetic bearing stator is not assembled with other parts to form a complete machine product, and whether the electromagnetic coil of the radial magnetic bearing stator and the outgoing line of the displacement sensor are correctly tested can be quickly tested through the radial magnetic bearing stator testing device, so that the testing efficiency is improved.
Optionally, the lifting mechanism comprises a guide assembly and a lifting driving assembly, the guide assembly comprises four guide posts vertically fixed on the lower plane of the table panel, a lifting plate parallel to the table panel and used for installing the rotating mechanism, a guide sleeve matched with the guide posts is arranged on the lifting plate, and the lifting plate is in sliding connection with the guide posts through the guide sleeve; the lifting driving assembly comprises a lifting motor and a screw rod lifter, the lifting motor and the screw rod lifter are fixedly arranged on the rack below the lifting plate, an output shaft of the lifting motor is fixedly connected with an input shaft of the screw rod lifter, an output end of the screw rod lifter is a lifting screw rod, one end, close to the lifting plate, of the lifting screw rod is fixedly provided with a connecting flange, and the connecting flange is fixedly arranged on the lower plane of the lifting plate.
Through adopting above-mentioned technical scheme, the lifter plate is under the direction of guide pillar and guide pin bushing, and elevator motor's output shaft drive lead screw lift input shaft rotates to make the lift lead screw of lead screw lift reciprocate, the lift lead screw promotes the lifter plate through flange and rises or descend, makes radial hall sensor be located electromagnet coil's high position or makes the induction iron piece be located displacement sensor's high position, is convenient for test conversion in electromagnet coil and displacement sensor position, improves efficiency of software testing.
Optionally, the rotary installation component includes flange sleeve pipe, flange hollow shaft, the flange sleeve pipe with radial stator location chuck is coaxial to be set up, be equipped with on the lifter plate flange sleeve pipe's sleeve pipe via hole, the flange sleeve pipe wears to establish the sleeve pipe via hole with lifter plate fixed connection, the flange hollow shaft is coaxial to wear to establish in the flange sleeve pipe hole, the flange of flange hollow shaft with flange sheathed tube flange fixed connection, the flange hollow shaft is kept away from the one end installation of lifter plate the sensing installation component.
Through adopting above-mentioned technical scheme, rotatory installation component passes through flange sleeve pipe fixed mounting on the lifter plate, and flange hollow shaft is coaxial to be worn to manage in the flange sleeve pipe, and flange of flange hollow shaft and flange fixed connection of flange sleeve pipe are convenient for install or dismantle the flange hollow shaft, and the flange hollow shaft is used for installing the sensing installation component, and the electric wire of sensing component draws forth through the through-hole of flange hollow shaft and links to each other with electric control unit, realizes carrying out 360 test to radial magnetic force bearing stator a plurality of solenoid coils and a plurality of displacement sensor.
Optionally, the rotary driving assembly includes rotary driving motor, rotary driving motor fixed mounting is in on the lifter plate, fixed mounting is first synchronous pulley on the rotary driving motor output shaft, rotates and installs the flange hollow shaft is close to the second synchronous pulley of lifter plate one end first synchronous pulley with cover is established and is used for driven toothed belt on the second synchronous pulley be located on the lifter plate first synchronous pulley with install and be used for adjusting between the second synchronous pulley toothed belt elasticity's tensioning band pulley, the second synchronous pulley drive the sensing installation component rotates.
Through adopting above-mentioned technical scheme, rotary drive motor's output shaft rotates and drives first synchronous pulley and rotate, through tensioning band pulley tensioning toothed belt, through toothed belt drive second synchronous pulley rotation, second synchronous pulley drive sensing installation component rotates, realizes that the radial hall sensor on the sensing installation component tests a plurality of electromagnet coils, and the response iron plate is sensed a plurality of displacement sensor.
Optionally, the sensing installation component is including being used for the installation sensing component's insulating installation cover and annular iron prop, annular iron prop suit is in on the flange hollow shaft, detachable fixed connection is in the one end of second synchronous pulley, insulating installation cover detachable suit is fixed on the annular iron prop, install on the insulating installation cover excircle radial hall sensor and response iron plate.
Through adopting above-mentioned technical scheme, install radial hall sensor and response iron plate on the insulating installation cover excircle, reduce radial hall sensor and the condition of outside wiring short circuit and take place, the inside annular iron leg that is of insulating installation cover, radial hall sensor is when the polarity of coil is tested, and the magnetic field intensity of electromagnet coil can be strengthened to annular iron leg, improves the accuracy of test.
Optionally, the sensing installation component further comprises a collecting ring for leading out the electric wire of the radial hall sensor, the collecting ring comprises an outer rotor and an inner stator, the outer rotor is detachably fixed at one end of the annular iron column, the inner stator is sleeved and fixed on the flange hollow shaft, the electric wire on the outer rotor is electrically connected with the electric wire of the radial hall sensor, and the electric wire on the inner stator penetrates through a hole of the flange hollow shaft to be electrically connected with the electric control unit.
Through adopting above-mentioned technical scheme, the collecting ring passes through electric wire and radial hall sensor electric wire electricity connection on the external rotor, and the external rotor rotates together with insulating installation cover, and electric wire and the electric control unit electricity connection on the internal stator, internal stator are fixed on the flange hollow shaft, and external rotor and internal stator relatively rotate, realize carrying out 360 rotation test to a plurality of electro-magnet coils of radial magnetic bearing stator and a plurality of displacement sensor, and electric wire on the radial hall sensor can not twine on the flange hollow shaft.
Optionally, the rotating mechanism further includes a circumferential positioning assembly, and the circumferential positioning assembly includes a sensing plate fixedly mounted on the insulating mounting sleeve, and a proximity sensor fixed on the lifting plate for detecting a position of the sensing plate.
Through adopting above-mentioned technical scheme, when the proximity sensor who fixes on the lifter plate senses the epaxial induction plate of insulating installation, under the control of electric control unit, rotary driving motor stops rotating, the induction plate of insulating installation cover just stops in the proximity sensor position, when testing radial magnetic bearing stator electromagnet coil, radial hall sensor is in proximity sensor's position from the induction plate of insulating installation cover and begins to rotate, test a plurality of electromagnet coils of radial magnetic bearing stator circumference, realize automatic positioning test, stop when the test is accomplished the back that the induction plate of insulating installation cover gets back to proximity sensor's position again.
In a second aspect, the present application provides a stator testing system, which adopts the following technical scheme:
The stator testing system comprises the radial magnetic bearing stator testing device, and the electrical control system further comprises a voltage-resistant insulation testing unit, an inter-turn short circuit testing unit and a resistance testing unit, wherein the electrical control unit is electrically connected with the voltage-resistant insulation testing unit, the inter-turn short circuit testing unit and the resistance testing unit.
By adopting the technical scheme, the stator test system tests the radial magnetic bearing stator coil for voltage insulation, inter-turn short circuit and resistance through the voltage insulation test unit, inter-turn short circuit test unit and resistance test unit of the electrical control system, tests the resistance and voltage insulation of the displacement sensor, reduces the problems that the voltage insulation, inter-turn short circuit and resistance value of the radial magnetic bearing stator electromagnet coil are not in accordance with requirements, and the displacement sensor is in accordance with the problems that the voltage insulation and the resistance value are not in accordance with requirements.
Optionally, the stator testing system further comprises an axial magnetic bearing stator testing device, wherein the axial magnetic bearing stator testing device comprises an axial stator positioning chuck for placing an axial magnetic bearing stator, the axial stator positioning chuck is nested on the table panel, and the stator testing system further comprises a handheld testing assembly arranged on the table panel and used for testing the axial magnetic bearing stator.
Through adopting above-mentioned technical scheme, axial magnetic bearing stator testing arrangement passes through axial stator positioning chuck installation axial magnetic bearing stator, tests axial magnetic bearing stator coil through handheld test assembly, reduces the possibility that the axial magnetic bearing stator that has the problem just found on installing the motor.
Optionally, handheld test assembly includes handheld dish and the axial hall sensor of being made by insulating material, handheld dish is including handheld handle and the test dish of setting in handheld handle one end, the test dish is kept away from one side installation axial hall sensor of handheld handle, axial hall sensor with the electrical control unit electricity is connected, the test dish is kept away from one side of handheld handle be equipped with axial magnetic bearing stator hole rotatable complex positioning table.
Through adopting above-mentioned technical scheme, handheld test assembly rotates the test panel through handheld handle, and under the rotation direction of axial magnetic bearing hole and test panel locating station, axial hall sensor on the test panel tests axial magnetic bearing stator coil, simple structure, convenient operation has increased the kind of test spare part, has improved the efficiency of test.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The radial magnetic bearing stator testing device is characterized in that the radial Hall sensor outputs signals under the action of the polar magnetic field of the electrified electromagnet coil through lifting of the lifting mechanism and rotation of the rotating mechanism, the north-south pole testing unit detects the output signals, and whether the outgoing line of the electromagnet coil is correct is obtained through comparing the output signals with standard signals; the induction iron block is close to the displacement sensor, the inductance measured by the inductance test unit is far greater than the standard value, whether the position of the outgoing line is correct is judged, and the radial magnetic bearing stator can be used for rapidly testing whether the electromagnetic coil of the radial magnetic bearing stator and the outgoing line of the displacement sensor are correct through the test device under the condition that the radial magnetic bearing stator is not assembled with other parts to form a complete machine product, so that the test efficiency is improved.
2. The lifting mechanism guides the lifting plate through the guide pillar of the guide assembly, so that the lifting stability of the lifting plate is improved, the lifting screw rod pushes the lifting plate to move up and down through the driving of the lifting motor of the lifting driving assembly and the screw rod lifter, the lifting positioning precision is improved, the sensing assembly is convenient to test and convert the position of the electromagnet coil and the position of the displacement sensor, and the testing efficiency is improved.
3. The flange hollow shaft of the rotary mounting assembly is mounted on the lifting plate through the flange sleeve, the flange hollow shaft is convenient to mount or dismount, and the electric wires of the sensing assembly are led out through the through holes of the flange hollow shaft and are connected with the electric control unit, so that 360-degree circumferential rotation test of a plurality of electromagnet coils and a plurality of displacement sensors of the radial magnetic bearing stator is realized.
4. The rotary driving assembly drives the first synchronous belt pulley to rotate through the rotation of the output shaft of the rotary driving motor, the toothed belt is tensioned through the tensioning belt pulley, the second synchronous belt pulley is driven to rotate through the toothed belt, the second synchronous belt pulley drives the sensing installation assembly to rotate, the radial Hall sensor on the sensing installation assembly is used for testing a plurality of electromagnet coils, and the sensing iron block is used for sensing a plurality of displacement sensors.
5. The sensing installation component is provided with the radial Hall sensor and the induction iron block on the outer circle of the insulating installation sleeve, so that the occurrence of short circuit between the radial Hall sensor and an external connecting line is reduced, the inside of the insulating installation sleeve is provided with the annular iron column, and when the polarity of the electromagnet coil is tested by the radial Hall sensor, the magnetic field intensity of the electromagnet coil can be enhanced by the annular iron column, and the testing accuracy is improved.
6. The collecting ring leads the electric wires of the radial Hall sensor from the outer rotor through the outer rotor and the inner stator, and leads out from the inner stator to be electrically connected with the electric control unit, so that 360-degree rotation test is carried out on a plurality of electromagnet coils and a plurality of displacement sensors of the radial magnetic bearing stator, and the electric wires on the radial Hall sensor cannot be wound on the flange hollow shaft.
7. The circumference positioning component senses the induction plate through the proximity sensor and feeds back to the electric control unit, the electric control unit controls the rotary driving motor to stop rotating, the insulation installation sleeve is positioned at the circumference position, the sensing component tests a plurality of circumferentially distributed electromagnet coils, and the induction iron block senses the displacement sensor.
8. The stator test system tests the resistance and the withstand voltage insulation of the displacement sensor by means of the withstand voltage insulation test unit, the inter-turn short circuit test unit and the resistance test unit of the electrical control system, so that the conditions that the withstand voltage insulation, the inter-turn short circuit and the resistance value of the radial magnetic bearing stator coil are not met are reduced, and the conditions that the withstand voltage insulation and the resistance value of the displacement sensor are not met are reduced.
9. The axial magnetic bearing stator testing device is provided with the axial magnetic bearing stator through the axial stator positioning chuck, and the axial magnetic bearing stator is tested through the handheld testing assembly, so that the possibility that the disqualified axial magnetic bearing stator is only found after being mounted on the whole machine is reduced.
10. The handheld test assembly rotates the test disc through the handheld handle, the axial Hall sensor on the test disc tests the axial magnetic bearing stator coil, the structure is simple, the operation is convenient, the types of test parts are increased, and the test efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a radial magnetic bearing stator testing device disclosed by the application.
FIG. 2 is a cross-sectional view of the radial magnetic bearing stator testing apparatus of the present disclosure with the electrical control system removed.
Fig. 3 is an enlarged view of a portion of the I position of fig. 2.
Fig. 4 is an enlarged partial view of the position II in fig. 2.
Fig. 5 is a schematic structural view of an insulating mounting sleeve according to the present disclosure.
Fig. 6 is an enlarged view of a portion of the III position of fig. 2.
Fig. 7 is a schematic structural diagram of a stator testing system according to the present disclosure.
Fig. 8 is a schematic view of the structure of the disclosed hand-held disk.
In the figure:
1. a test bench; 11. a deck plate; 111. a radial stator positioning chuck; 112. an axial stator positioning chuck; 12. a stand;
2. A sensing mechanism; 21. a sensing assembly; 211. a radial hall sensor; 212. induction iron blocks; 22. a sensing mounting assembly; 221. an insulating mounting sleeve; 222. an annular iron column; 223. a collecting ring; 2231. an outer rotor; 2232. an inner stator;
3. A rotation mechanism; 31. a rotary mounting assembly; 311. a flange sleeve; 312. a flange hollow shaft; 32. a rotary drive assembly; 321. a rotary drive motor; 322. a first synchronous pulley; 323. a second synchronous pulley; 324. a toothed belt; 325. tensioning the belt pulley; 33. a circumferential positioning assembly; 331. an induction plate; 332. a proximity sensor;
4. A lifting mechanism; 41. a guide assembly; 411. a guide post; 412. a lifting plate; 4121. a guide sleeve; 42. a lifting driving assembly; 421. a lifting motor; 422. a screw rod lifter; 423. lifting the screw rod; 424. a connecting flange; 425. an encoder;
5. An electrical control system; 51. an electrical control unit; 511. an industrial personal computer; 512. an electrical control circuit; 52. a north and south pole test unit; 53. an inductance test unit; 54. a withstand voltage insulating test unit; 55. an inter-turn short circuit test unit; 56. a resistance test unit;
6. a hand-held test assembly; 61. a hand-held disc; 611. a handle; 612. a test tray; 6121. a positioning table; 62. an axial hall sensor;
7. a radial magnetic bearing stator; 71. an electromagnet coil; 72. a displacement sensor;
8. an axial magnetic bearing stator.
Detailed Description
The present application is described in further detail below in conjunction with fig. 1-8.
The embodiment of the application discloses a radial magnetic bearing stator testing device. For testing the radial magnetic bearing stator 7 to determine whether the leads of the electromagnet coils 71 and the displacement sensor 72 of the radial magnetic bearing stator 7 are correct, in the embodiment of the present application, the eight-pole radial magnetic bearing stator 7 is taken as an example for illustration, the radial magnetic bearing stator 7 has 8 electromagnet coils 71, two electromagnet coils 71 are connected in series, and four electromagnetic fields are formed together, the displacement sensor 72 includes four radial displacement sensors and four axial displacement sensors, and referring to fig. 1 to 3, the radial magnetic bearing stator testing device includes: test bench 1, sensing mechanism 2, rotary mechanism 3, elevating system 4 and electrical control system 5.
The test bench 1 comprises a bench top 11 and a bench 12, wherein a radial stator positioning chuck 111 is arranged on the bench top 11, and the radial stator positioning chuck 111 is used for placing and positioning a radial magnetic bearing stator 7 to be tested.
The sensing mechanism 2 comprises a sensing assembly 21 and a sensing installation assembly 22, the sensing assembly 21 comprises two radial Hall sensors 211, the two radial Hall sensors 211 can simultaneously sense the polarities of two electromagnet coils 71 connected in series with the radial magnetic bearing stator 7, and can sense the induction iron block 212 of the displacement sensor 72 of the radial magnetic bearing stator 7; two radial hall sensors 211 and an inductive iron block 212 are mounted on the sensing mounting assembly 22.
The rotation mechanism 3 includes a rotation mounting assembly 31 for mounting the sensing mounting assembly 22, and a rotation driving assembly 32 capable of driving the sensing mounting assembly 22 to rotate, the rotation mounting assembly 31 being configured to mount the sensing mounting assembly 22.
The lifting mechanism 4 can lift the rotation mechanism 3 to a position where the radial hall sensor 211 is located corresponding to the electromagnet coil 71 or a position where the inductive iron piece 212 is located corresponding to the displacement sensor 72.
The electrical control system 5 comprises an electrical control unit 51, a north-south pole test unit 52, an inductance test unit 53 and a display screen, wherein the display screen is used for displaying the test result; the electric control unit 51 comprises an industrial personal computer 511 and an electric control circuit 512, the industrial personal computer 511 is electrically connected with the electric control circuit 512, the north-south pole test unit 52 and the inductance test unit 53, the electric control circuit 512 is electrically connected with the north-south pole test unit 52, the inductance test unit 53, the electromagnet coil 71, the displacement sensor 72 and the radial Hall sensor 211, and the north-south pole test unit 52 is electrically connected with the radial Hall sensor 211.
The industrial personal computer 511 of the electrical control unit 51 controls the electrical control circuit 512 to energize the lifting mechanism 4 and the rotating mechanism 3 through a control program, so that the lifting mechanism 4 lifts the radial Hall sensor 211 to a height position corresponding to the electromagnet coils 71, the rotating mechanism 3 rotates the radial Hall sensor 211 to the positions of a pair of electromagnet coils 71 to be tested, the electrical control circuit 512 energizes the electromagnet coils 71 to be tested, the electromagnet coils 71 to be tested generate corresponding polarity magnetic fields, the radial Hall sensor 211 outputs signals under the action of the polarity magnetic fields, the north-south pole testing unit 52 tests the output signals of the radial Hall sensor 211, and the industrial personal computer 511 compares the output signals with standard signals to obtain whether the lead-out wires of the electromagnet coils 71 to be tested are correct; the lifting mechanism 4 lifts the induction iron block 212 to the height position corresponding to the displacement sensor 72 to be detected, the rotating mechanism 3 rotates the induction iron block 212 to the position corresponding to the displacement sensor 72 to be detected, the electric control circuit 512 supplies power to the displacement sensor 72 to be detected, if the induction iron block 212 is close to the position, the inductance measured by the inductance test unit 53 is far greater than a standard value, the actual measured position value is compared with the theoretical design position value, whether the outgoing line position is correct or not is judged, and the radial magnetic bearing stator 7 can rapidly test whether the outgoing line of the electromagnet coil 71 and the displacement sensor 72 of the radial magnetic bearing stator 7 is correct or not under the condition that the radial magnetic bearing stator test device is not assembled with other parts to form a complete machine product, so that the test efficiency is improved.
Referring to fig. 2, the lifting mechanism 4 includes a guide assembly 41 and a lifting driving assembly 42, the guide assembly 41 includes four guide posts 411 disposed on a lower plane of the deck 11 and vertically fixed to the deck 11, a lifting plate 412 is disposed parallel to the deck 11, the lifting plate 412 is used for mounting the rotation mechanism 3, a guide sleeve 4121 matched with the guide posts 411 is disposed on the lifting plate 412, and the lifting plate 412 is slidably connected with the guide posts 411 through the guide sleeve 4121; the lifting driving assembly 42 comprises a lifting motor 421 and a screw rod lifter 422, the screw rod lifter 422 is a worm gear lifter, an input shaft of the worm gear lifter is a double input shaft, one end of the double input shaft is fixedly connected with an output shaft of the lifting motor 421, the other end of the double input shaft is connected with an encoder 425, the encoder 425 is used for testing the lifting height of the lifting screw rod 423, the lifting motor 421 and the screw rod lifter 422 are fixedly arranged on the rack 12 below the lifting plate 412, the output end of the screw rod lifter 422 is the lifting screw rod 423, one end, close to the lifting plate 412, of the lifting screw rod 423 is fixedly provided with a connecting flange 424, and the connecting flange 424 is fixedly arranged on the lower plane of the lifting plate 412; under the guidance of the guide post 411 and the guide sleeve 4121, the lifting plate 412 is guided by the guide post 411 and the guide sleeve 4121, and the output shaft of the lifting motor 421 drives the input shaft of the screw rod lifter 422 to rotate, so that the lifting screw rod 423 of the screw rod lifter 422 moves up and down, the encoder 425 records and feeds back the lifting height, the lifting screw rod 423 pushes the lifting plate 412 to lift or descend through the connecting flange 424, the radial Hall sensor 211 is located at the height position of the electromagnet coil 71 or the induction iron block 212 is located at the height position of the displacement sensor 72, the position test conversion between the electromagnet coil 71 and the position test conversion between the displacement sensor 72 are facilitated, and the test efficiency is improved.
Referring to fig. 3 and 4, the rotary mounting assembly 31 includes a flange sleeve 311 and a flange hollow shaft 312, the flange sleeve 311 is coaxially disposed with the radial stator positioning chuck 111, a sleeve through hole of the flange sleeve 311 is disposed on the lifting plate 412, the flange sleeve 311 is fixedly connected with the lifting plate 412 through the sleeve through hole, the flange hollow shaft 312 coaxially penetrates through a pipe hole of the flange sleeve 311, a flange of the flange hollow shaft 312 is fixedly connected with a flange of the flange sleeve 311, the flange hollow shaft 312 is installed on the lifting plate 412 at one end far away from the lifting plate 412, the rotary mounting assembly 31 is fixedly installed on the lifting plate 412 through the flange sleeve 311, the flange hollow shaft 312 coaxially penetrates through the flange sleeve 311, a flange of the flange hollow shaft 312 is fixedly connected with a flange of the flange sleeve 311, so as to facilitate installation or detachment of the flange hollow shaft 312, the flange hollow shaft 312 is used for installing the sensing mounting assembly 22, and wires of the sensing assembly 21 are led out through a through hole of the flange hollow shaft 312 to be connected with the electric control unit 51, so as to realize 360 ° testing of 8 electromagnet coils 71 and 8 displacement sensors 72 in the radial magnetic bearing stator 7.
Referring to fig. 4, the rotary driving assembly 32 includes a rotary driving motor 321, the rotary driving motor 321 is fixedly installed on a lifting plate 412, a first synchronous pulley 322 is fixedly installed on an output shaft of the rotary driving motor 321, a second synchronous pulley 323 installed on one end of a flange hollow shaft 312, which is close to the lifting plate 412, is rotatably installed through a bearing, toothed belts 324 for transmission are sleeved on the first synchronous pulley 322 and the second synchronous pulley 323, a tensioning pulley 325 for adjusting tightness of the toothed belts 324 is installed between the first synchronous pulley 322 and the second synchronous pulley 323 on the lifting plate 412, a strip hole is arranged on the lifting plate 412 in a direction perpendicular to the toothed belts 324, a supporting shaft of the tensioning pulley 325 is penetrated in the strip hole, the first synchronous pulley 322 is rotatably driven by a screw, the first synchronous pulley 322 is rotatably driven by the second synchronous pulley 323, the second synchronous pulley 323 is rotatably driven by the tensioning pulley 324, 8 electromagnet coil blocks 212 are tested by the radial hall sensor 211 on the sensing installation assembly 22, and the 8 electromagnet coil blocks 212 are tested by the sensor 72.
Referring to fig. 3 and 5, the sensing assembly 22 includes an insulating mounting sleeve 221 and an annular iron column 222, the annular iron column 222 is made of high magnetic permeability material, the annular iron column 222 is sleeved on the flange hollow shaft 312, and is detachably and fixedly connected to one end of the second synchronous pulley 323, the insulating mounting sleeve 221 is detachably sleeved and fixed on the annular iron column 222, a radial hall sensor 211 and an induction iron block 212 are mounted on the outer circle of the insulating mounting sleeve 221, the induction iron block 212 is made of high magnetic permeability material, the insulating mounting sleeve 221 is made of insulating materials such as nylon and rubber, the occurrence of short circuit between the radial hall sensor 211 and an external connecting line is reduced, the annular iron column 222 is arranged inside the insulating mounting sleeve 221, and when the polarity of the electromagnet coil 71 is tested by the radial hall sensor 211, the magnetic field strength of the electromagnet coil 71 is enhanced by the annular iron column 222, and the accuracy of the test is improved.
Referring to fig. 3, the sensing and mounting assembly 22 further includes a slip ring 223 for leading out the wires of the radial hall sensor 211, the slip ring 223 includes an outer rotor 2231 and an inner stator 2232, the outer rotor 2231 is detachably fixed at one end of the annular iron post 222, the inner stator 2232 is sleeved and fixed on the flange hollow shaft 312, the wires on the outer rotor 2231 are electrically connected with the wires of the radial hall sensor 211, the wires on the inner stator 2232 pass through the holes of the flange hollow shaft 312 and are electrically connected with the electric control circuit 512, the slip ring 223 is electrically connected with the wires of the radial hall sensor 211 through the wires on the outer rotor 2231, the outer rotor 2231 rotates together with the insulating and mounting sleeve 221, the wires on the inner stator 2232 are electrically connected with the electric control circuit 512, the inner stator 2232 is fixed on the flange hollow shaft 312, the outer rotor 2231 and the inner stator 2232 relatively rotate, so that 360-degree rotation test of the 8 electromagnet coils 71 and 8 displacement sensors 72 in the radial magnetic bearing stator 7 is realized, and the wires on the radial hall sensor 211 are not wound on the flange hollow shaft 312.
Referring to fig. 6, the rotating mechanism 3 further includes a circumferential positioning assembly 33, the circumferential positioning assembly 33 includes a sensing plate 331 fixedly mounted on the insulating mounting sleeve 221, a proximity sensor 332 fixed on the lifting plate 412 for detecting the position of the sensing plate 331, when the proximity sensor 332 fixed on the lifting plate 412 senses the sensing plate 331 on the insulating mounting sleeve 221, the rotation of the rotating driving motor 321 is stopped under the control of the electric control circuit 512, the sensing plate 331 of the insulating mounting sleeve 221 is stopped at the position of the proximity sensor 332, the position is zero, when the electromagnet coil 71 of the radial magnetic bearing stator 7 is tested, the radial hall sensor 211 starts to rotate from the zero position of the insulating mounting sleeve 221, and 8 electromagnet coils 71 in the circumferential direction of the radial magnetic bearing stator 7 are respectively tested, so that automatic positioning detection is realized, and after the test is completed, the sensing plate 331 of the insulating mounting sleeve 221 is stopped when the sensing plate 331 returns to the zero position again.
The testing process of the radial magnetic bearing stator testing device provided by the application comprises the following steps: the radial magnetic bearing stator 7 to be measured is placed in the radial stator positioning chuck 111 and positioned, the lead wires of the electromagnet coils 71 and the displacement sensor 72 of the radial magnetic bearing stator 7 are connected with the electric control circuit 512, the electric control system 5 is started, a control program in the industrial personal computer 511 detects whether the induction plate 331 is in a zero position, the lifting plate 412 is in a lowest position, the electric control circuit 512 is controlled by the control program to energize the lifting motor 421, the lifting motor 421 drives the lifting plate 412 to ascend, when the encoder 425 detects that the radial Hall sensor 211 ascends to the height position of the electromagnet coils 71, the lifting motor 421 stops, the pair of electromagnet coils 71 to be measured are energized, the rotary driving motor 321 is energized to rotate, the radial Hall sensor 211 is rotated to a position opposite to the energized pair of electromagnet coils 71 to stop, the north-south pole test unit 52 detects an output signal generated by the radial Hall sensor 211 under the action of a magnetic field, the output signal is collected in the industrial personal computer 511 and then compared with a standard signal, so that whether the lead wire of the tested electromagnet coil 71 is correct or not is obtained, a test result is displayed on a display screen, the rotary driving motor 321 is electrified and rotated, the radial Hall sensor 211 is rotated to a position opposite to the electromagnet coil 71 which is electrified next time to stop, the same test is carried out, after all electromagnet coils 71 are detected, the rotary driving motor 321 drives the radial Hall sensor 211 to return to zero position to stop, the lifting motor 421 is electrified, the inductive iron block 212 is lifted to a position at the height of the displacement sensor 72 to be tested to stop, the displacement sensor 72 to be tested is electrified with a voltage of 1 volt, the rotary driving motor 321 is electrified and rotated, the inductive iron block 212 is driven to rotate to a position opposite to the electrified displacement sensor 72 to stop, the inductance testing unit 53 tests the inductance of the displacement sensor 72, the industrial personal computer 511 receives the tested inductance and then compares the tested inductance with the standard inductance, so as to obtain whether the outgoing line of the displacement sensor 72 is correct, and display the test result on the display screen, and likewise, the rotary driving motor 321 is electrified and rotated to drive the induction iron block 212 to rotate to the position of the next electrified displacement sensor 72 to stop and test, after the test is completed, the rotary driving motor 321 drives the radial hall sensor 211 to stop at the zero position, and the lifting motor 421 drives the lifting plate 412 to be positioned at the lowest position to wait for the test of the next radial magnetic bearing stator 7.
The application also discloses a stator test system, referring to fig. 1 and 7, comprising the radial magnetic bearing stator test device, the electric control system 5 further comprises a voltage-resistant insulation test unit 54, an inter-turn short circuit test unit 55 and a resistance test unit 56, the industrial personal computer 511 is respectively and electrically connected with the voltage-resistant insulation test unit 54, the inter-turn short circuit test unit 55 and the resistance test unit 56, the electric control circuit 512 is respectively and electrically connected with the voltage-resistant insulation test unit 54, the inter-turn short circuit test unit 55 and the resistance test unit 56, the stator test system tests the voltage-resistant insulation, the inter-turn short circuit and the resistance value of the electromagnet coil 71 of the radial magnetic bearing stator 7 through the voltage-resistant insulation test unit 54, the inter-turn short circuit test unit 55 and the resistance test unit 56 of the electric control system 5, tests the resistance value and the voltage-resistant insulation of the displacement sensor 72, the problem that the voltage-resistant insulation, the inter-turn short circuit and the resistance value of the electromagnet coil 71 of the radial magnetic bearing stator 7 are not in accordance with the requirements is reduced, and the displacement sensor 72 is in accordance with the voltage-resistant insulation and the resistance value not in accordance with the requirements.
Referring to fig. 7, a stator testing system further includes an axial magnetic bearing stator testing device, the axial magnetic bearing stator testing device includes an axial stator positioning chuck 112 for placing the axial magnetic bearing stator 8, the axial stator positioning chuck 112 and the radial stator positioning chuck 111 are nested on the table plate 11 side by side, further includes a hand-held testing assembly 6 placed on the table plate 11 for testing the axial magnetic bearing stator 8, the axial magnetic bearing stator 8 testing device installs the axial magnetic bearing stator 8 through the axial stator positioning chuck 112, and tests the axial magnetic bearing stator 8 coil through the hand-held testing assembly 6, so as to reduce the possibility of problems occurring after the axial magnetic bearing stator 8 is installed on the whole machine.
Referring to fig. 7 and 8, the handheld test assembly 6 includes a handheld disc 61 made of an insulating material and an axial hall sensor 62, the handheld disc 61 includes a handheld handle 611 and a test disc 612 disposed at one end of the handheld handle 611, the axial hall sensor 62 is mounted on one side of the test disc 612 far away from the handheld handle 611, the axial hall sensor 62 is electrically connected with the electrical control circuit 512, a positioning table 6121 capable of being in rotation fit with an inner hole of the axial magnetic bearing stator 8 is disposed on one side of the test disc 612 far away from the handheld handle 611, the handheld test assembly 6 rotates the test disc 612 through the handheld handle 611, and the axial hall sensor 62 on the test disc 612 tests the electrified axial magnetic bearing stator 8 coil under the rotation guide of the inner hole of the axial magnetic bearing stator 8 and the positioning table 6121.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in order, therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (6)
1. A radial magnetic bearing stator testing apparatus, comprising:
The test bench (1), the test bench (1) comprises a table top board (11) and a table frame (12) for supporting the table top board (11), and the table top board (11) can be used for placing a radial stator positioning chuck (111) for positioning a radial magnetic bearing stator (7) to be tested;
A sensing mechanism (2), the sensing mechanism (2) comprising a sensing assembly (21) and a sensing mounting assembly (22) for mounting the sensing assembly (21), the sensing assembly (21) comprising a radial hall sensor (211) capable of sensing the polarity of an electromagnet coil (71) of a radial magnetic bearing stator (7), an inductive iron block (212) capable of sensing a displacement sensor (72) of the radial magnetic bearing stator (7); the radial Hall sensor (211) and the induction iron block (212) are arranged on the sensing installation assembly (22);
A rotation mechanism (3), the rotation mechanism (3) comprising a rotation mounting assembly (31) for mounting the sensing mounting assembly (22), a rotation driving assembly (32) capable of driving the sensing mounting assembly (22) to rotate;
The lifting mechanism (4) can lift the rotating mechanism (3) to a height position corresponding to the radial Hall sensor (211) positioned on the electromagnet coil (71) or a height position corresponding to the displacement sensor (72) positioned on the induction iron block (212);
An electrical control system (5), the electrical control system (5) comprising an electrical control unit (51), a north-south pole test unit (52) and an inductance test unit (53); the electrical control unit (51) is electrically connected with the north-south pole test unit (52), the inductance test unit (53), the electromagnet coil (71), the displacement sensor (72) and the radial Hall sensor (211); the north-south pole test unit (52) is electrically connected with the radial Hall sensor (211);
The lifting mechanism (4) comprises a guide assembly (41) and a lifting driving assembly (42), the guide assembly (41) comprises four guide posts (411) which are vertically fixed on the lower plane of the table panel (11), a lifting plate (412) which is parallel to the table panel (11) and used for installing the rotating mechanism (3) is arranged on the lifting plate (412), a guide sleeve (4121) matched with the guide posts (411) is arranged on the lifting plate (412), and the lifting plate (412) is in sliding connection with the guide posts (411) through the guide sleeve (4121); the lifting driving assembly (42) comprises a lifting motor (421) and a screw rod lifter (422), the lifting motor (421) and the screw rod lifter (422) are fixedly arranged on the rack (12) below the lifting plate (412), an output shaft of the lifting motor (421) is fixedly connected with an input shaft of the screw rod lifter (422), an output end of the screw rod lifter (422) is a lifting screw rod (423), a connecting flange (424) is fixedly arranged at one end, close to the lifting plate (412), of the lifting screw rod (423), and the connecting flange (424) is fixedly arranged on the lower plane of the lifting plate (412);
The rotary mounting assembly (31) comprises a flange sleeve (311) and a flange hollow shaft (312), the flange sleeve (311) and the radial stator positioning chuck (111) are coaxially arranged, a sleeve through hole of the flange sleeve (311) is formed in the lifting plate (412), the flange sleeve (311) is penetrated through the sleeve through hole and is fixedly connected with the lifting plate (412), the flange hollow shaft (312) is coaxially penetrated in a pipe hole of the flange sleeve (311), a flange of the flange hollow shaft (312) is fixedly connected with a flange of the flange sleeve (311), and one end, far away from the lifting plate (412), of the flange hollow shaft (312) is provided with the sensing mounting assembly (22);
the rotary driving assembly (32) comprises a rotary driving motor (321), the rotary driving motor (321) is fixedly arranged on the lifting plate (412), a first synchronous pulley (322) is fixedly arranged on an output shaft of the rotary driving motor (321), a second synchronous pulley (323) which is rotatably arranged on one end of the flange hollow shaft (312) close to the lifting plate (412) is sleeved on the first synchronous pulley (322) and the second synchronous pulley (323), a toothed belt (324) for transmission is sleeved on the first synchronous pulley (322) and the second synchronous pulley (323), a tensioning pulley (325) for adjusting tightness of the toothed belt (324) is arranged between the first synchronous pulley (322) and the second synchronous pulley (323) on the lifting plate (412), and the second synchronous pulley (323) drives the sensing installation assembly (22) to rotate;
the sensing installation assembly (22) comprises an insulating installation sleeve (221) and an annular iron column (222) which are used for installing the sensing assembly (21), the annular iron column (222) is sleeved on the flange hollow shaft (312), the annular iron column is detachably and fixedly connected with one end of the second synchronous pulley (323), the insulating installation sleeve (221) is detachably sleeved and fixed on the annular iron column (222), and the radial Hall sensor (211) and the induction iron block (212) are installed on the outer circle of the insulating installation sleeve (221).
2. A radial magnetic bearing stator testing apparatus according to claim 1, wherein: the sensing installation assembly (22) further comprises a collecting ring (223) for leading out wires of the radial Hall sensor (211), the collecting ring (223) comprises an outer rotor (2231) and an inner stator (2232), the outer rotor (2231) is detachably fixed at one end of the annular iron column (222), the inner stator (2232) is sleeved and fixed on the flange hollow shaft (312), the wires on the outer rotor (2231) are electrically connected with the wires of the radial Hall sensor (211), and the wires on the inner stator (2232) penetrate through holes of the flange hollow shaft (312) to be electrically connected with the electric control unit (51).
3. A radial magnetic bearing stator testing apparatus according to claim 2, wherein: the rotating mechanism (3) further comprises a circumferential positioning assembly (33), the circumferential positioning assembly (33) comprises a sensing plate (331) fixedly mounted on the insulating mounting sleeve (221), and a proximity sensor (332) which is fixedly arranged on the lifting plate (412) and used for detecting the position of the sensing plate (331).
4. A stator testing system, characterized by: a radial magnetic bearing stator testing device comprising any one of claims 1 to 3, said electrical control system (5) further comprising a withstand voltage insulation testing unit (54), an inter-turn short circuit testing unit (55) and a resistance testing unit (56), said electrical control unit (51) being electrically connected to said withstand voltage insulation testing unit (54), inter-turn short circuit testing unit (55) and resistance testing unit (56).
5. A stator testing system according to claim 4, wherein: the axial magnetic bearing stator testing device comprises an axial stator positioning chuck (112) for placing an axial magnetic bearing stator (8), wherein the axial stator positioning chuck (112) is nested on the table panel (11), and the axial magnetic bearing stator testing device further comprises a handheld testing assembly (6) which is placed on the table panel (11) and used for testing the axial magnetic bearing stator (8).
6. A stator testing system according to claim 5, wherein: the handheld test assembly (6) comprises a handheld disc (61) made of an insulating material and an axial Hall sensor (62), the handheld disc (61) comprises a handheld handle (611) and a test disc (612) arranged at one end of the handheld handle (611), the axial Hall sensor (62) is installed on one side of the handheld handle (611) away from the test disc (612), the axial Hall sensor (62) is electrically connected with the electrical control unit (51), and a positioning table (6121) which can be in rotary fit with an inner hole of the axial magnetic bearing stator (8) is arranged on one side of the handheld handle (611) away from the test disc (612).
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| CN202311169244.8A CN117233599B (en) | 2023-09-11 | 2023-09-11 | Radial magnetic bearing stator testing device and stator testing system |
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| CN202311169244.8A CN117233599B (en) | 2023-09-11 | 2023-09-11 | Radial magnetic bearing stator testing device and stator testing system |
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| CN117233599B true CN117233599B (en) | 2024-05-10 |
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