CN119210017A - Low-speed permanent magnet submersible motor with bearing self-lubrication function - Google Patents
Low-speed permanent magnet submersible motor with bearing self-lubrication function Download PDFInfo
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- CN119210017A CN119210017A CN202411686610.1A CN202411686610A CN119210017A CN 119210017 A CN119210017 A CN 119210017A CN 202411686610 A CN202411686610 A CN 202411686610A CN 119210017 A CN119210017 A CN 119210017A
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- cable
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- 238000005461 lubrication Methods 0.000 title abstract description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052802 copper Inorganic materials 0.000 claims abstract description 25
- 239000010949 copper Substances 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000004804 winding Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000784732 Lycaena phlaeas Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1095—Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/08—Attachment of brasses, bushes or linings to the bearing housing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
具有轴承自润滑功能的低速永磁潜油电机，涉及石油开采电机技术领域，包括外壳，外壳内固接有定子铁芯，定子铁芯内转动设有转轴，转轴上固定有铜基滑动轴承，定子铁芯内固定有轴承保持架，轴承保持架的内圈与铜基滑动轴承的外圈摩擦接触，铜基滑动轴承的外圈上均布有若干个自润滑体。本发明解决了传统技术中的永磁潜油电机在100‑300rpm的低速状态下，无法为对磨副提供润滑条件；电缆接头处进水时，水会汇集到一起并且存留，造成电缆插接件的绝缘对地；以及电机引接线装入电机内部的过程中极易与旋转的转子轴相互擦抗或缠绕到转子轴上的问题。
A low-speed permanent magnet submersible motor with a bearing self-lubricating function relates to the technical field of oil extraction motors, including a housing, a stator core fixedly connected to the housing, a rotating shaft rotatably arranged in the stator core, a copper-based sliding bearing fixed on the rotating shaft, a bearing retainer fixed in the stator core, the inner ring of the bearing retainer in frictional contact with the outer ring of the copper-based sliding bearing, and a plurality of self-lubricating bodies evenly distributed on the outer ring of the copper-based sliding bearing. The present invention solves the problems that the permanent magnet submersible motor in the conventional technology cannot provide lubrication conditions for the grinding pair at a low speed of 100-300rpm; when water enters the cable joint, the water will gather together and remain, causing the insulation of the cable connector to the ground; and the motor lead wire is very easy to rub against the rotating rotor shaft or entangle on the rotor shaft during the process of being installed in the motor.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation motors, in particular to a low-speed permanent magnet submersible motor with a bearing self-lubricating function.
Background
The permanent magnet submersible motor is a special motor with a large length-diameter ratio, the length-diameter ratio of the special motor is close to 100:1, under the general condition, the permanent magnet submersible motor is submersible into an oil well to work in a neutral mode, a bearing bears small radial load in the working operation process of the motor and is mainly used as a bearing with a centralizing function, the radial load is small in the working process and abrasion is small, therefore, a common copper-based sliding bearing is mostly adopted, in order to adapt to the structure with the large length-diameter ratio of the motor, the bearing is used in a multistage dispersing mode in the vertical working process of the motor, the average dispersion bears radial force generated when the motor rotates, the motor runs stably and reliably, and when the submersible motor works in a horizontal mode or an inclined mode, the bearing bears large radial load.
The prior art discloses a patent with the publication number CN102064646A, which comprises a rotor shaft, a stator and a rotor, wherein the rotor is fixed on the rotor shaft, the stator is arranged outside the rotor to surround the rotor, 18 stator slots are formed in the stator, the winding of the stator is a small-slot multipole, fractional-slot double-layer short-distance winding, the number of the rotor stages is 14, and the motor can be widely used for power allocation of an electric submersible pump unit in an oil field oil well.
The prior devices, including the above patents, gradually expose the disadvantages of the technology with use, mainly in the following aspects:
Firstly, when the motor speed is in a low speed range of 100-300rpm, the sliding bearing works at a lower speed and is in a boundary lubrication state, an effective bearing lubrication mechanism cannot be formed, a good lubrication condition cannot be provided for a bearing pair grinding pair, under the condition that the lubrication performance cannot be met, a copper-based sliding bearing base material is easy to abrade, the gap of the bearing is increased, the air gap of a stator and a rotor is increased, the performance of the motor is deteriorated, the vibration and the noise of a unit are increased, the stator and the rotor of the motor are extremely easy to generate a sweeping phenomenon, and the whole submersible motor is damaged and scrapped.
Secondly, in the operation process of the permanent magnet submersible motor, when water enters from a cable connector due to uncontrollable factors, the water can be collected and remained, so that insulation of a cable connector is grounded, a short circuit phenomenon is caused, and the motor is directly burnt.
Thirdly, in the assembly process of the permanent magnet submersible motor, the motor lead wire is extremely easy to rub against the rotating rotor shaft or wind onto the rotor shaft in the process of being installed inside the motor, so that the insulation layer of the lead wire is damaged, or the phenomenon that the lead wire is pulled apart by the rotation of the rotor shaft is caused.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention solves the problems that the permanent magnet submersible motor in the prior art cannot provide lubrication conditions for a grinding pair in a low-speed state of 100-300rpm, water is collected and remained when water enters a cable joint to cause insulation of a cable plug connector to the ground, and the motor lead wire is extremely easy to rub against a rotating rotor shaft or wind onto the rotor shaft in the process of being arranged inside the motor.
In order to solve the problems, the invention provides the following technical scheme:
The low-speed permanent magnet submersible motor with the bearing self-lubricating function comprises a shell, a stator core is fixedly connected in the shell, a rotating shaft is arranged in the stator core in a rotating mode, a copper-based sliding bearing is fixed on the rotating shaft, a bearing retainer is fixed in the stator core, an inner ring of the bearing retainer is in friction contact with an outer ring of the copper-based sliding bearing, and a plurality of self-lubricating bodies are uniformly distributed on the outer ring of the copper-based sliding bearing.
As an optimized scheme, one end of the shell is fixedly connected with an upper joint, the upper joint is provided with a cable wiring hole communicated with an inner cavity of the motor, a cable plug connector is fixed in the cable wiring hole through a plug connector protecting ring, a water-stringing groove is arranged on the outer wall of the plug connector protecting ring in a surrounding mode, and a drainage channel is formed between the water-stringing groove and the inner wall of the cable wiring hole.
As an optimized scheme, the cable connector is connected with a motor lead wire extending to the inner cavity of the motor, the stator core is connected with a stator winding, and a protective ring for preventing the motor lead wire from contacting the rotating shaft is clamped between the stator winding and the upper connector.
As an optimized scheme, the cable connector is connected with a cable shell, and an O-shaped sealing ring is connected between the cable shell and the cable connection hole.
As an optimized scheme, the port of the cable wiring hole is provided with an inserting groove, the cable shell is provided with a reducing section inserted into the inserting groove, the outer edge of the end part of the reducing section is provided with an inclined surface pressing groove, and the O-shaped sealing ring is fixed in the area between the inclined surface pressing groove and the reducing section.
As an optimized scheme, the protection ring comprises a cylinder shell section propped against the stator winding, one end of the cylinder shell section is vertically connected with a support ring section, and the motor lead wire is propped against the support ring section.
As an optimized scheme, the upper connector comprises an outer cylinder section connected with the shell and an inner cylinder section contacted with the rotating shaft, and a connecting section connected with the cable plug connector is arranged between the upper ends of the outer cylinder section and the inner cylinder section.
As an optimized scheme, the inner ring of the supporting ring section is connected to the lower end position of the inner cylinder section through elastic clamping rings which are arranged in parallel.
As an optimized scheme, magnetic steel components are respectively fixed at the positions of the rotating shaft at two sides of the copper-based sliding bearing.
As an optimized scheme, two ends of the copper-based sliding bearing are respectively propped against the end parts of the magnetic steel component through buffer cushions.
Compared with the prior art, the invention has the beneficial effects that:
The lubricating performance is improved through the regular and orderly self-lubricating body inlaid on the copper-based sliding bearing, and the lubricating oil film can not be effectively formed when the sliding bearing runs at a low speed, so that the service life of the bearing base material is ensured, and the bearing can be used for bearing the axial load on a rotor when the motor works in a horizontal or inclined state within the rotating speed range of 100-300 rpm.
Processing a water-flowing groove on the outer circle of the plug connector protective ring, if the O-shaped sealing ring is damaged, water entering the inner cavity of the motor can enter the inner cavity of the motor along the water-flowing groove due to the specific gravity difference of the water and the oil, so that water is prevented from being gathered at the cable plug connector, the phenomenon of short circuit caused by the insulation of the exposed cable plug connector to the ground is avoided, and the motor can still reliably run when water enters the motor;
In order to prevent the motor lead wire from entering into the rotating space of the rotor, the winding or the scratch resistance of the motor lead wire caused by the rotation of the rotor is avoided, a protective ring is added between the stator winding and the upper connector of the motor lead wire, and the motor lead wire is prevented from entering into the rotating area of the rotating shaft, so that the damage and the breakage of the motor lead wire are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the plug protection ring of the present invention;
FIG. 3 is a schematic illustration of the location of an O-ring seal of the present invention.
The drawing shows that the device comprises a 1-shell, a 2-stator core, a 3-rotating shaft, a 4-copper-based sliding bearing, a 5-self-lubricating body, a 6-bearing retainer, a 7-magnetic steel component, an 8-buffer pad, a 9-upper connector, a 10-cable connector, an 11-connector protecting ring, a 12-water-stringing groove, a 13-cable shell, a 14-O-shaped sealing ring, a 15-motor lead wire, a 16-motor inner cavity, a 17-stator winding, a 18-protecting ring, a 19-elastic clamping ring, a 20-cable wiring hole, a 21-inserting groove and a 22-diameter-reducing section.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 3, the low-speed permanent magnet submersible motor with the bearing self-lubricating function comprises a housing 1, wherein a stator core 2 is fixedly connected in the housing 1, a rotating shaft 3 is rotationally arranged in the stator core 2, a copper-based sliding bearing 4 is fixedly arranged on the rotating shaft 3 through a key, a bearing retainer 6 is fixedly arranged in the stator core 2, an inner ring of the bearing retainer 6 is in friction contact with an outer ring of the copper-based sliding bearing 4, and a plurality of self-lubricating bodies 5 are uniformly distributed on the outer ring of the copper-based sliding bearing 4.
The self-lubricating body 5 is selected as a polytetrafluoroethylene cylinder, is inlaid in a hole on a base body of a copper-based lubricating bearing, and is subjected to counter grinding with an inner hole of a bearing retainer 6 to be used as a lubricant.
The bearing holder 6 is a working pair grinding auxiliary member of the copper-based sliding bearing 4, and the copper-based sliding bearing 4 and the bearing holder 6 are displaced by a clearance space of 1mm from left to right.
The bearing retainer 6 is made of non-magnetic conductive material, and has high surface hardness and wear resistance through a surface desalination process.
The self-lubricating body 5 is embedded regularly and orderly.
An upper joint 9 is fixedly connected to one end of the shell 1, a cable wiring hole 20 communicated with the inner cavity 16 of the motor is formed in the upper joint 9, a cable plug connector 10 is fixed in the cable wiring hole 20 through a plug connector protecting ring 11, a water-stringing groove 12 is arranged on the outer wall of the plug connector protecting ring 11 in a surrounding mode, and a drainage channel is formed between the water-stringing groove 12 and the inner wall of the cable wiring hole 20.
The water tub 12 has an elongated shape.
The cable connector 10 is connected with a motor lead wire 15 extending to a motor cavity 16, the stator core 2 is connected with a stator winding 17, and a protective ring 18 for preventing the motor lead wire 15 from contacting the rotating shaft 3 is clamped between the stator winding 17 and the upper connector 9.
The protection ring 18 is made of polytetrafluoroethylene, has oil resistance and high temperature resistance, and has stronger structural strength.
The cable connector 10 is connected with a cable housing 13, and an O-shaped sealing ring 14 is connected between the cable housing 13 and a cable wiring hole 20.
The port of the cable connection hole 20 is provided with an inserting groove 21, the cable housing 13 is provided with a diameter reduction section 22 inserted into the inserting groove 21, the outer edge of the end part of the diameter reduction section 22 is provided with an inclined surface pressing groove, and the O-shaped sealing ring 14 is fixed in the area between the inclined surface pressing groove and the diameter reduction section.
The guard ring 18 comprises a cylindrical shell section propped against the stator winding 17, one end of the cylindrical shell section is vertically connected with a support ring section, and the motor lead wire 15 is propped against the support ring section.
The upper joint 9 comprises an outer cylinder section connected with the shell 1 and an inner cylinder section contacted with the rotating shaft 3, and a connecting section for connecting a cable connector 10 is arranged between the outer cylinder section and the upper end part of the inner cylinder section.
The inner ring of the support ring section is connected to the lower end position of the inner cylinder section through elastic clamping rings 19 arranged in parallel.
The magnetic steel components 7 are respectively fixed at the positions of the rotating shaft 3 at the two sides of the copper-based sliding bearing 4, and the generated magnetic field and the stator three-phase rotating magnetic field jointly act to generate moment.
The performance of the magnetic steel component 7 determines the working index and performance of the motor, directly influences the output torque of the motor, and if the output torque changes greatly, the magnetic steel component 7 is indicated to be possibly demagnetized.
The two ends of the copper-based sliding bearing 4 are respectively propped against the end parts of the magnetic steel part 7 through the buffer pads 8, so that the situation that the assembly is positioned is avoided.
The working principle of the device is as follows:
The lubricating performance is increased through the regular and orderly self-lubricating body 5 inlaid on the copper-based sliding bearing 4, so that the lubricating oil film can not be effectively formed when the sliding bearing runs at a low speed, the service life of the bearing base material is ensured, and the bearing base material can be used for bearing the axial load generated on a rotor when the motor works in a horizontal or inclined state within the rotating speed range of 100-300 rpm.
Processing the water-flowing groove 12 on the excircle of the connector protecting ring 11, if the O-shaped sealing ring 14 is damaged, water entering the motor inner cavity 16 can enter the motor inner cavity 16 along the water-flowing groove 12 due to the specific gravity difference of the water and the oil, so that the water is prevented from being gathered at the cable connector 10, the phenomenon of short circuit caused by the insulation of the exposed cable connector 10 to the ground is avoided, and the motor can still reliably operate when water enters;
In order to prevent the motor lead wire 15 from entering the rotating space of the rotor, the winding or scratch resistance of the motor lead wire 15 caused by the rotation of the rotor is avoided, a protective ring 18 is added between the stator winding 17 and the upper connector 9, and the motor lead wire 15 is prevented from entering the rotating area of the rotating shaft 3, so that the damage and the breakage of the motor lead wire 15 are avoided.
It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit the technical solution of the present invention, and although the detailed description of the present invention is given with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention, and all the modifications or substitutions are included in the scope of the claims and the specification of the present invention.
Claims (10)
1. The low-speed permanent magnet submersible motor with the bearing self-lubricating function is characterized by comprising a shell (1), wherein a stator core (2) is fixedly connected in the shell (1), a rotating shaft (3) is rotationally arranged in the stator core (2), a copper-based sliding bearing (4) is fixed on the rotating shaft (3), a bearing retainer (6) is fixedly arranged in the stator core (2), an inner ring of the bearing retainer (6) is in friction contact with an outer ring of the copper-based sliding bearing (4), and a plurality of self-lubricating bodies (5) are uniformly distributed on the outer ring of the copper-based sliding bearing (4).
2. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 1, wherein an upper connector (9) is fixedly connected to one end of the housing (1), a cable wiring hole (20) communicated with an inner cavity (16) of the motor is formed in the upper connector (9), a cable plug connector (10) is fixed in the cable wiring hole (20) through a plug connector protection ring (11), a water-flowing groove (12) is formed in the outer wall of the plug connector protection ring (11) in a surrounding mode, and a water-draining channel is formed between the water-flowing groove (12) and the inner wall of the cable wiring hole (20).
3. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 2, wherein the cable connector (10) is connected with a motor lead wire (15) extending to a motor inner cavity (16), the stator core (2) is connected with a stator winding (17), and a protective ring (18) for preventing the motor lead wire (15) from contacting the rotating shaft (3) is clamped between the stator winding (17) and the upper connector (9).
4. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 2, wherein the cable connector (10) is connected with a cable shell (13), and an O-shaped sealing ring (14) is connected between the cable shell (13) and the cable wiring hole (20).
5. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 4, wherein an inserting groove (21) is formed in a port of the cable wiring hole (20), a reducing section (22) which is inserted into the inserting groove (21) is formed in the cable shell (13), an inclined surface pressing groove is formed in the outer edge of the end portion of the reducing section (22), and the O-shaped sealing ring (14) is fixed in an area between the inclined surface pressing groove and the reducing section (22).
6. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 3, wherein the protective ring (18) comprises a cylinder shell section propped against the stator winding (17), one end of the cylinder shell section is vertically connected with a support ring section, and the motor lead wire (15) is propped against the support ring section.
7. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 6, wherein the upper connector (9) comprises an outer cylinder section connected with the shell (1) and an inner cylinder section contacted with the rotating shaft (3), and a connecting section connected with the cable plug connector (10) is arranged between the outer cylinder section and the upper end part of the inner cylinder section.
8. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 7, wherein the inner ring of the supporting ring section is connected to the lower end part of the inner cylinder section through elastic clamping rings (19) which are arranged in parallel.
9. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 1, wherein magnetic steel components (7) are respectively fixed at the positions of the rotating shaft (3) on two sides of the copper-based sliding bearing (4).
10. The low-speed permanent magnet submersible motor with the bearing self-lubricating function according to claim 9, wherein two ends of the copper-based sliding bearing (4) are respectively abutted against the end parts of the magnetic steel part (7) through buffer pads (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411686610.1A CN119210017A (en) | 2024-11-25 | 2024-11-25 | Low-speed permanent magnet submersible motor with bearing self-lubrication function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411686610.1A CN119210017A (en) | 2024-11-25 | 2024-11-25 | Low-speed permanent magnet submersible motor with bearing self-lubrication function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119210017A true CN119210017A (en) | 2024-12-27 |
Family
ID=94078246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411686610.1A Pending CN119210017A (en) | 2024-11-25 | 2024-11-25 | Low-speed permanent magnet submersible motor with bearing self-lubrication function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119210017A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512151Y (en) * | 2001-12-13 | 2002-09-18 | 朱承祖 | Sealed plugging downhole motor |
| US20050269885A1 (en) * | 2001-04-19 | 2005-12-08 | Baker Hughes Incorporated | Pressurized bearing system for submersible motor |
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| CN116760232A (en) * | 2023-06-29 | 2023-09-15 | 山东寿光市坤隆石油机械股份有限公司 | A horizontal oil submersible motor with an aligning structure |
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2024
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| US20050269885A1 (en) * | 2001-04-19 | 2005-12-08 | Baker Hughes Incorporated | Pressurized bearing system for submersible motor |
| CN2512151Y (en) * | 2001-12-13 | 2002-09-18 | 朱承祖 | Sealed plugging downhole motor |
| US20070046115A1 (en) * | 2005-08-25 | 2007-03-01 | Baker Hughes Incorporated | Tri-line power cable for electrical submersible pump |
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| RU2592942C1 (en) * | 2015-09-01 | 2016-07-27 | Акционерное общество "Новомет-Пермь" | Submersible motor |
| CN211525348U (en) * | 2019-12-06 | 2020-09-18 | 华亿轴承科技（江苏）有限公司 | Copper-based inlaid solid lubrication bearing with corrosion resistance function |
| CN216774456U (en) * | 2021-12-02 | 2022-06-17 | 利欧集团浙江泵业有限公司 | Rain-proof water structure of motor cover box |
| CN116760232A (en) * | 2023-06-29 | 2023-09-15 | 山东寿光市坤隆石油机械股份有限公司 | A horizontal oil submersible motor with an aligning structure |
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