CN202886330U - Threaded-in eddy current detection equipment for detecting pipes - Google Patents
Threaded-in eddy current detection equipment for detecting pipes Download PDFInfo
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- CN202886330U CN202886330U CN201220598831.XU CN201220598831U CN202886330U CN 202886330 U CN202886330 U CN 202886330U CN 201220598831 U CN201220598831 U CN 201220598831U CN 202886330 U CN202886330 U CN 202886330U
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Abstract
The utility model discloses threaded-in eddy current detection equipment for detecting pipes. The equipment comprises an eddy current flaw detector, a probe, a support frame, and an air source, wherein a pipe to be detected is arranged horizontally at one side of the eddy current flaw detection; the probe is arranged in the pipe to be detector, and includes a probe body matched with the inner wall shape of the pipe to be detected, and a detection coil wound on the probe body along the length direction of the probe body; the eddy current flaw detector is connected with the detection coil through an electric wire; the support frame is mounted at one end of the pipe to be detected close to the eddy current flaw detector; one end of the support frame extends into the pipe to be detected; a strip-like groove is formed on the outer surface of the upper part of the support frame to allow the electric wire to pass through; an air hole is formed at the middle part of the support frame; and the air source is connected with a hollow cavity between the support frame and the probe through an air pipe and the air hole. The threaded-in eddy current detection equipment provided by the utility model can meet the requirement for eddy current flaw detection of long pipes and is simple in structure, and detection efficiency is greatly improved.
Description
Technical field
The utility model relates to a kind of eddy current detecting equipment, particularly relates to a kind of detection tubing interior crossing type eddy current detecting equipment.
Background technology
The domestic eddy detection technology that begins one's study the sixties not only is applied in the starting material such as pipe, plate, rod, silk of regular shape till now, but also is applied on the piece test than complicated shape.Develop into so far, EDDY CURRENT mode commonly used is divided into putting type, outer through type and inside-through type.Common inside-through type generally all is hand propelled or mechanical driving.
Along with the fast development of the industrial sectors such as metallurgy, chemical industry, Aeronautics and Astronautics, nuclear industry, eddy detection technology is strong with its usability, noncontact coupling, pick-up unit are light etc., and advantage is used widely.Seamless tubular goods is mainly used on the heat exchanger, and the liquid medium in its pipeline may cause corrosion and the sedimentary accumulation of tube wall.Equipment is in operational process, because the vibrations of heat-exchange tube, and form collision and friction between the back up pad, cause the wearing and tearing of heat exchanger tube outer wall and back up pad contact site.The eddy current detection method that adopts the inside-through type coil is to detect the inside and outside wall defective of heat-exchanger pipeline, guaranteeing the most effective and reliable lossless detection method of equipment safety operation, also is a lossless detection method that is most widely used during heat-exchanger pipeline detects.
At present, pass eddy-current flaw detecting method in ripe hand propelled and the mechanical propelling movement type.But for a large amount of tubing, above-mentioned two kinds of methods can not meet the demands.Hand propelled eddy current detection method inferior position is the slow detection with being unfavorable for ultra-long tube of detection speed, and mechanically-propelled formula device is complicated, and cost is high, and small diameter tube can't carry out.In the epoch of present rapid economic development, research is efficient, and widely applicable, the inside-through type eddy current detection method that cost is low becomes a kind of inexorable trend undoubtedly.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of detection tubing interior crossing type eddy current detecting equipment is provided.This interior crossing type eddy current detecting equipment has improved the defective that traditional hand push mode consumes manpower and inefficiency, also avoided simultaneously mechanical propelling movement type because equipping complexity, defective with high costs, it can satisfy the eddy current test of long tube, simple in structure, greatly improved detection efficiency.
For achieving the above object, the technical solution adopted in the utility model is: detect tubing interior crossing type eddy current detecting equipment, it is characterized in that: comprise eddy current flaw detec, probe, bracing frame and source of the gas; Tubing level to be detected is laid in a side of described eddy current flaw detec, described probe is installed in the described tubing to be detected and can moves horizontally in tubing to be detected, described probe comprises the probe body suitable with pipe material inner wall shape to be detected, be wound with magnetic test coil on the described probe body, described eddy current flaw detec joins by electric wire and magnetic test coil; Support frame as described above is installed in tubing to be detected near an end of eddy current flaw detec, it is inner that support frame as described above one end stretches into tubing to be detected, the outside surface on support frame as described above top offers the strip groove that extends and supply described electric wire to pass through along pipe length direction to be detected, the middle part of support frame as described above offers along the air hole of pipe length direction to be detected, and described source of the gas is connected with cavity between bracing frame and the probe by tracheae and air hole.
Above-mentioned detection tubing interior crossing type eddy current detecting equipment, it is characterized in that: also comprise motor and be used for the control system of control electric machine rotation, described control system comprises for detection of the photoelectric sensor of probe shift position with for the controller that receives photoelectric sensor output signals, the input end of described controller joins by control line and photoelectric sensor, output terminal and the motor drive module of described controller join, described electric wire and control line are installed in the wire bushing, and the winding wheel for the rolling wire bushing is installed on the output shaft of described motor.
Above-mentioned detection tubing interior crossing type eddy current detecting equipment is characterized in that: offer on the outer circumference surface of described probe body for the annular groove one of installation and measuring coil with for the annular groove two that photoelectric sensor is installed.
Above-mentioned detection tubing interior crossing type eddy current detecting equipment, it is characterized in that: offer the annular incision one that extends towards the center of probe one end on the side channel wall of described annular groove one, on the described probe body and the outside that is positioned at annular incision one forms the elastic slip spare one that fits tightly with pipe material inner wall to be detected; Offer the annular incision two that extends towards the center of the probe other end on the one side channel wall of described annular groove two, on the described probe body and the outside that is positioned at annular incision two forms the elastic slip spare two that fits tightly with pipe material inner wall to be detected.
Above-mentioned detection tubing interior crossing type eddy current detecting equipment is characterized in that: the diameter of described elastic slip spare one is than the large 0.5mm～1.5mm of internal diameter of tubing to be detected, and the diameter of described elastic slip spare two is than the large 0.5mm～1.5mm of internal diameter of tubing to be detected.
Above-mentioned detection tubing interior crossing type eddy current detecting equipment is characterized in that: also comprise be used to the control box that holds eddy current flaw detec, motor, source of the gas and controller and the pillar that is used for the support and control case.
Above-mentioned detection tubing interior crossing type eddy current detecting equipment, it is characterized in that: the shape of support frame as described above in the form of a truncated cone.
Above-mentioned detection tubing interior crossing type eddy current detecting equipment, it is characterized in that: described tracheae is threaded with pore by joint.
The utility model compared with prior art has the following advantages:
1, of the present utility model simple in structure, rationally novel in design, be easy to install.
2, the utility model carries out rolling by motor to wire bushing, it matches with the gases at high pressure propulsion mode and consists of a complete detection loop, advance by gases at high pressure first and detect, reclaim by motor again and detect, namely finish the detection to a tubing to be detected, next, carry out the detection of next tubing to be detected, further improve detection efficiency, can finish the detection of tubing in enormous quantities.
3, the utility model is by arranging annular groove one, avoided pipe material inner wall to be detected to the wearing and tearing of magnetic test coil, by annular groove two is set, avoided pipe material inner wall to be detected to the wearing and tearing of photoelectric sensor, effectively guaranteed the accuracy rate that detects, and the serviceable life of having improved magnetic test coil and photoelectric sensor.
4, the utility model is by arranging elastic slip spare one and elastic slip spare two, so that the good stability of probe in tubing to be detected, thereby the clutter that eddy current flaw detec is received is less, and simultaneously, the sealing of elastic slip spare one and two pairs of cavitys of elastic slip spare strengthens.
5, realization cost of the present utility model is low, and result of use is good, is convenient to promote the use of.
In sum, the utility model is simple in structure, rationally novel in design, functional reliability is high, long service life, improved the defective that traditional hand push mode consumes manpower and inefficiency, also avoided simultaneously mechanical propelling movement type because equipping complexity, defective with high costs, it can satisfy the eddy current test of long tube, simple in structure, greatly improved detection efficiency.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is one-piece construction synoptic diagram of the present utility model.
Fig. 2 is the structural representation of the utility model probe.
Fig. 3 is the structural representation of the utility model bracing frame.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the schematic block circuit diagram of the utility model control system.
Description of reference numerals:
1-pillar; 2-source of the gas; 3-eddy current flaw detec;
4-control box; 5-motor; 6-wire bushing;
7-joint; 8-bracing frame; 8-1-strip groove;
8-2-air hole; 9-cavity; 10-probe;
10-1-probe body; 10-2-annular incision one; 10-3-annular groove one;
10-4-annular groove two; 10-5-annular incision two; 10-6-elastic slip spare two;
10-7-photoelectric sensor; 10-8-magnetic test coil; 10-9-elastic slip spare one;
11-tubing to be detected; 12-bin; 13-tracheae;
14-controller; 15-motor drive module.
Embodiment
A kind of detection tubing interior crossing type eddy current detecting equipment as shown in Figure 1, Figure 2, Figure 3 and Figure 4 comprises eddy current flaw detec 3, probe 10, bracing frame 8 and source of the gas 2; Tubing 11 levels to be detected are laid in a side of described eddy current flaw detec 3, described tubing to be detected 11 is installed on the bin 12, described probe 10 is installed in the described tubing to be detected 11 and can moves horizontally in tubing 11 to be detected, described probe 10 comprises the probe body 10-1 suitable with tubing 11 inner wall shape to be detected, be wound with magnetic test coil 10-8 on the described probe body 10-1, described eddy current flaw detec 3 joins by electric wire and magnetic test coil 10-8; Support frame as described above 8 is installed in tubing 11 to be detected near an end of eddy current flaw detec 3, support frame as described above 8 one ends stretch into tubing to be detected 11 inside, the outside surface on support frame as described above 8 tops offers the strip groove 8-1 that extends and supply described electric wire to pass through along tubing 11 length directions to be detected, the middle part of described tubing to be detected 11 offers the air hole 8-2 that extends along bracing frame 8 length directions, and described source of the gas 2 is connected by tracheae 13 and air hole 8-2 and bracing frame 8 and the cavity 9 of popping one's head between 10.
During use, first-selected requirement according to examination criteria is carved people's industrial injury to the sample pipe, then magnetic test coil 10-8 is positioned over the defective locations in the sample pipe, probe 10 moves around, regulate simultaneously Eddy current detector 3 parameters, make the Flaw display signal satisfy the normal sensibility requirement, the probe 10 that then will regulate is put into tubing 11 to be detected, bracing frame 8 is installed subsequently, electric wire is placed in the strip groove 8-1, connects source of the gas 2 and air hole 8-2 with tracheae 13, next, open the valve of source of the gas 2, air-flow will be popped one's head in and 10 will be pushed to tubing 11 heads to be detected, in probe 10 processes that move, observe and will regulate Eddy current detector 3 monitor signals and change, if any the signal that exceeds standard, just record the position of defective on tubing 11 to be detected.
In the present embodiment, this interior crossing type eddy current detecting equipment has improved the defective that traditional hand push mode consumes manpower and inefficiency, simultaneously also avoided mechanical propelling movement type because equipping complexity, defective with high costs, it adopts gases at high pressure to push the mode of probe 10, so that send distance to, can satisfy the eddy current test of long tube, simple in structure, greatly improved detection efficiency.
In conjunction with Fig. 1, Fig. 2 and Fig. 5, this interior crossing type eddy current detecting equipment also comprises motor 5 and is used for the control system that control motor 5 rotates, described control system comprises for detection of the photoelectric sensor 10-7 of probe 10 shift positions with for the controller 14 that receives photoelectric sensor 10-7 output signal, the input end of described controller 14 joins by control line and photoelectric sensor 10-7, the output terminal of described controller 14 and motor drive module 15 join, described electric wire and control line are installed in the wire bushing 6, and the winding wheel for rolling wire bushing 6 is installed on the output shaft of described motor 5.
During use, when photoelectric sensor 10-7 arrives tubing 11 heads to be detected and sees the light time, send signal for controller 14 by control box 4, controller 14 rotates by motor drive module 15 control motors 5, thereby wire bushing 6 is carried out rolling, and probe 10 is at the uniform velocity mobile under the driving of motor 5, in probe 10 processes that move, observe and regulate the variation of Eddy current detector 3 monitor signals, if any the signal that exceeds standard, just record the position of defective on tubing 11 to be detected.
In the present embodiment, this interior crossing type eddy current detecting equipment is by adopting motor 5 will pop one's head in 10 to recovery, treating the defective that detects on the tubing 11 when it advances gases at high pressure on the one hand further detects, avoid undetected, on the other hand, it matches with the gases at high pressure propulsion mode and consists of a complete detection loop, advance by gases at high pressure first and detect, reclaim by motor 5 again and detect, namely finish the detection to a tubing 11 to be detected, next, carry out the detection of next tubing to be detected 11, further improve detection efficiency, can finish the detection of tubing in enormous quantities.
As shown in Figure 2, offer on the outer circumference surface of described probe body 10-1 for annular groove one 10-3 of installation and measuring coil 10-8 with for annular groove two 10-4 that photoelectric sensor 10-7 is installed.By annular groove one 10-3 is set, avoided tubing 11 inwalls to be detected to the wearing and tearing of magnetic test coil 10-8, by annular groove two 10-4 are set, avoided tubing 11 inwalls to be detected to the wearing and tearing of photoelectric sensor 10-7, effectively guaranteed the accuracy rate that detects, and the serviceable life of having improved magnetic test coil 10-8 and photoelectric sensor 10-7.
As shown in Figure 2, offer annular incision one 10-2 that extends towards the center of probe 10 1 ends on the side channel wall of described annular groove one 10-3, the described probe body 10-1 outside upper and that be positioned at annular incision one 10-2 forms elastic slip spare one 10-9 that fits tightly with tubing 11 inwalls to be detected; Offer annular incision two 10-5 that extend towards the center of probe 10 other ends on the side channel wall of described annular groove two 10-4, the described probe body 10-1 outside upper and that be positioned at annular incision two 10-5 forms elastic slip spare two 10-6 that fit tightly with tubing 11 inwalls to be detected.Preferably, the diameter of described elastic slip spare one 10-9 is than the large 0.5mm～1.5mm of internal diameter of tubing 11 to be detected, and the diameter of described elastic slip spare two 10-6 is than the large 0.5mm～1.5mm of internal diameter of tubing 11 to be detected.By elastic slip spare one 10-9 and elastic slip spare two 10-6 are set, 10 the good stabilities in tubing 11 to be detected so that pop one's head in, thereby the clutter that eddy current flaw detec 3 is received is less, and simultaneously, elastic slip spare one 10-9 and elastic slip spare two 10-6 strengthen the sealing of cavity 9.
As shown in Figure 1, this interior crossing type eddy current detecting equipment also comprises be used to the control box 4 that holds eddy current flaw detec 3, motor 5, source of the gas 2 and controller 14 and the pillar 1 that is used for support and control case 4.
As shown in figures 1 and 3, the shape of support frame as described above 8 has improved the sealing of cavity 9 in the form of a truncated cone.Described tracheae 13 is threaded with air hole 8-2 by joint 7, avoids the leakage of tracheae 13 and air hole 8-2 junction gases at high pressure.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment does, all still belong in the protection domain of technical solutions of the utility model.
Claims (8)
1. detect tubing interior crossing type eddy current detecting equipment, it is characterized in that: comprise eddy current flaw detec (3), probe (10), bracing frame (8) and source of the gas (2); Tubing to be detected (11) level is laid in a side of described eddy current flaw detec (3), described probe (10) is installed in the described tubing to be detected (11) and can moves horizontally in tubing to be detected (11), described probe (10) comprises the probe body (10-1) suitable with tubing to be detected (11) inner wall shape, be wound with magnetic test coil (10-8) on the described probe body (10-1), described eddy current flaw detec (3) joins by electric wire and magnetic test coil (10-8); Support frame as described above (8) is installed in tubing to be detected (11) near an end of eddy current flaw detec (3), support frame as described above (8) one ends stretch into tubing to be detected (11) inside, the outside surface on support frame as described above (8) top offers the strip groove (8-1) that extends and supply described electric wire to pass through along tubing to be detected (11) length direction, the middle part of support frame as described above (8) offers the air hole (8-2) that extends along tubing to be detected (11) length direction, and described source of the gas (2) is connected by tracheae (13) and air hole (8-2) and bracing frame (8) and the cavity (9) of popping one's head between (10).
2. detection tubing interior crossing type eddy current detecting equipment according to claim 1, it is characterized in that: also comprise motor (5) and be used for the control system that control motor (5) rotates, described control system comprises for detection of the photoelectric sensor (10-7) of probe (10) shift position with for the controller (14) that receives photoelectric sensor (10-7) output signal, the input end of described controller (14) joins by control line and photoelectric sensor (10-7), the output terminal of described controller (14) and motor drive module (15) join, described electric wire and control line are installed in the wire bushing (6), and the winding wheel for rolling wire bushing (6) is installed on the output shaft of described motor (5).
3. detection tubing interior crossing type eddy current detecting equipment according to claim 2 is characterized in that: offer on the outer circumference surface of described probe body (10-1) for the annular groove one (10-3) of installation and measuring coil (10-8) with for the annular groove two (10-4) that photoelectric sensor (10-7) is installed.
4. detection tubing interior crossing type eddy current detecting equipment according to claim 3, it is characterized in that: offer the annular incision one (10-2) that extends towards the center of probe (10) one ends on the side channel wall of described annular groove one (10-3), described probe body (10-1) outside upper and that be positioned at annular incision one (10-2) forms the elastic slip spare one (10-9) that fits tightly with tubing to be detected (11) inwall; Offer the annular incision two (10-5) that extends towards the center of probe (10) other end on the one side channel wall of described annular groove two (10-4), described probe body (10-1) outside upper and that be positioned at annular incision two (10-5) forms the elastic slip spare two (10-6) that fits tightly with tubing to be detected (11) inwall.
5. detection tubing interior crossing type eddy current detecting equipment according to claim 4, it is characterized in that: the diameter of described elastic slip spare one (10-9) is than the large 0.5mm～1.5mm of internal diameter of tubing to be detected (11), and the diameter of described elastic slip spare two (10-6) is than the large 0.5mm～1.5mm of internal diameter of tubing to be detected (11).
6. detection tubing interior crossing type eddy current detecting equipment according to claim 2 is characterized in that: also comprise be used to the control box (4) that holds eddy current flaw detec (3), motor (5), source of the gas (2) and controller (14) and the pillar (1) that is used for support and control case (4).
7. detection tubing interior crossing type eddy current detecting equipment according to claim 1, it is characterized in that: the shape of support frame as described above (8) in the form of a truncated cone.
8. detection tubing interior crossing type eddy current detecting equipment according to claim 1, it is characterized in that: described tracheae (13) is threaded with pore (8-2) by joint (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220598831.XU CN202886330U (en) | 2012-11-14 | 2012-11-14 | Threaded-in eddy current detection equipment for detecting pipes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220598831.XU CN202886330U (en) | 2012-11-14 | 2012-11-14 | Threaded-in eddy current detection equipment for detecting pipes |
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| CN202886330U true CN202886330U (en) | 2013-04-17 |
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| CN201220598831.XU Expired - Lifetime CN202886330U (en) | 2012-11-14 | 2012-11-14 | Threaded-in eddy current detection equipment for detecting pipes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928504A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Internal-through type eddy current detecting equipment for detecting tubes |
| CN106501356A (en) * | 2016-12-29 | 2017-03-15 | 核动力运行研究所 | A kind of interior crossing type eddy current probe centering method of calibration |
| CN106932470A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
| CN106932471A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
-
2012
- 2012-11-14 CN CN201220598831.XU patent/CN202886330U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928504A (en) * | 2012-11-14 | 2013-02-13 | 西部钛业有限责任公司 | Internal-through type eddy current detecting equipment for detecting tubes |
| CN102928504B (en) * | 2012-11-14 | 2016-03-23 | 西部钛业有限责任公司 | Detect tubing interior crossing type eddy current detecting equipment |
| CN106932470A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
| CN106932471A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
| CN106932470B (en) * | 2015-12-31 | 2023-08-18 | 核动力运行研究所 | Probe transmission device for vortex detection of heat transfer tube of steam generator |
| CN106932471B (en) * | 2015-12-31 | 2023-12-15 | 核动力运行研究所 | Probe driving device for vortex detection of heat transfer tube of steam generator |
| CN106501356A (en) * | 2016-12-29 | 2017-03-15 | 核动力运行研究所 | A kind of interior crossing type eddy current probe centering method of calibration |
| CN106501356B (en) * | 2016-12-29 | 2019-08-13 | 核动力运行研究所 | A kind of interior crossing type eddy current probe is to neutral method of calibration |
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