A precision infrared detection test device for composite insulators

Abstract

The present application relates to the technical field of insulator, especially to a precision infrared detection test device for composite insulator, comprising: a base plate, a composite insulator, an adjusting seat mechanism and a heat exchange mechanism, the composite insulator is installed on the base plate through the adjusting seat mechanism, an axial through cooling cavity is arranged in the center of the composite insulator, a plurality of simulated electric heating rings are embedded in the composite insulator from top to bottom, the adjusting seat mechanism is used for adjusting the inclination angle of the composite insulator at least, the heat exchange mechanism comprises a cooling box, a liquid pump, a tee joint, an electromagnetic valve and a liquid outlet pipe, the heat exchange mechanism is used for heat exchange of the cooling liquid in the cooling cavity, so as to rapidly cool the composite insulator, the device can simulate the defect heating of the composite insulator, and the infrared precision detection test is convenient, which is beneficial to the infrared detection teaching of the composite insulator, compared with the traditional teaching mode of real detection on site, the device is not limited by the site, and the low-voltage simulation is safer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insulators, in particular to a precise infrared detection test device for composite insulators. BACKGROUND

[0002] With the increase of service life, composite insulators may have internal decay and other problems. When there is a defect point in the internal part of the insulator, local discharge may occur at the part, causing the temperature of the composite insulator to rise. Therefore, it is necessary to check the insulators in use and replace the insulators with problems in time.

[0003] In the prior art, workers usually use precise infrared imaging technology to detect composite insulators. For example, the composite insulator insulating defect detection method based on infrared precise temperature measurement disclosed in the Chinese patent with the publication number CN104713901B on June 17, 2015 uses a thermal image taken by an infrared thermal imager to determine whether a composite insulator has an insulating defect. In order to improve the accuracy of the detection method, the workers need to wear shielding clothes and climb to the iron tower to retest, so as to determine whether the judgment method of the present application is accurate.

[0004] Workers engaged in the above work need to be trained in advance to improve their skills and detection accuracy. At present, most workers are trained directly on site, and they find defective insulators in the field investigation. This method has many limitations, is limited by the site, and retesting needs to be done by climbing.

[0005] The information disclosed in this BACKGROUND section is only intended to enhance the understanding of the general background of the present disclosure and should not be construed as recognition or any form of suggestion that this information constitutes prior art. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a precise infrared detection test device for composite insulators, which simulates real defects of composite insulators, facilitates the pre-training of workers, and improves the skills of workers and the detection accuracy.

[0007] To achieve the above purpose, the technical solution adopted by the present application is as follows: a precise infrared detection test device for composite insulators, comprising:

[0008] a table plate, a composite insulator, an adjusting seat mechanism and a heat exchange mechanism; wherein,

[0009] The composite insulator is installed on the table plate through the adjusting seat mechanism, the center position of the composite insulator is provided with a cooling cavity penetrating in the axial direction, and a plurality of simulated electric heating rings are embedded in the composite insulator from top to bottom;

[0010] The adjusting seat mechanism is used for adjusting the inclination angle of the composite insulator.

[0011] The heat exchange mechanism comprises a cooling box, a liquid pump, a tee joint, a solenoid valve and a liquid outlet pipe, the cooling box and the liquid pump are both mounted on the lower surface of the table plate, the liquid pump is communicated with the liquid outlet of the cooling box and the tee joint through pipes respectively, the remaining connecting ends of the tee joint are communicated with a reflux pipe and a bidirectional interaction pipe respectively, the other end of the reflux pipe is communicated with the top liquid return port of the cooling box, the solenoid valve is mounted on the reflux pipe, the other end of the bidirectional interaction pipe is communicated with the bottom inlet of the cooling cavity, and the two ends of the liquid outlet pipe are communicated with the top outlet of the cooling cavity and the top liquid inlet of the cooling box respectively.

[0012] Further, the adjusting seat mechanism comprises a butt joint end sleeve, an injection pipe, a swing tongue plate, a fan-shaped piece and a swing top screw, the butt joint end sleeve is fixedly connected to the bottom of the composite insulator, the butt joint end sleeve has a flow-through cavity therein, the top of the flow-through cavity is communicated with the cooling cavity, and the bottom of the flow-through cavity is communicated with the injection pipe, the top of the swing tongue plate is fixedly connected to the butt joint end sleeve, the fan-shaped piece comprises two symmetrical fan-shaped plates and a connecting bottom plate connected between the bottoms of the two fan-shaped plates, the top of each fan-shaped plate has an arc-shaped through slot, the swing tongue plate is located between the two fan-shaped plates and is rotatably connected to the two fan-shaped plates through a pin shaft at the bottom end, and the swing top screw passes through the arc-shaped through slot and is connected to the swing tongue plate.

[0013] Further, the adjusting seat mechanism further comprises a rotating base, a rotating clamping shaft, a clamping shaft chuck and a rotating top screw, the rotating base is arranged above the table plate through a fixed eave at the end, a disc core hole is formed in the center of the rotating base, the top end of the rotating clamping shaft is fixedly connected to the connecting bottom plate, and the bottom end penetrates through the disc core hole and is fixedly connected to the clamping shaft chuck, the connecting bottom plate extends outward to form a top screw fixing plate, and the rotating top screw penetrates through a threaded hole formed on the top screw fixing plate and is abutted and connected to the upper surface of the rotating base.

[0014] Further, the bottom end of the composite insulator is inserted into the top opening of the flow-through cavity.

[0015] Further, the bidirectional interaction pipe and the tee joint are further provided with a reverse suction mechanism having a quick liquid discharge function.

[0016] Further, the siphoning mechanism comprises a siphoning kettle, a piston disc, a siphoning compression spring, a plug rod, a supporting spring, a magnetic force column and a supporting magnetic frame, the siphoning kettle is internally provided with a piston column cavity and a communication ring cavity located at the top of the piston column cavity, the diameter of the communication ring cavity is larger than that of the piston column cavity, a plurality of liquid flow grooves are formed around the upper half of the piston column cavity of the siphoning kettle, the top of the liquid flow grooves is in communication with the communication ring cavity, and the bottom of the liquid flow grooves is in communication with the piston column cavity, the piston disc is located in the piston column cavity, the siphoning compression spring is arranged between the top of the piston disc and the top wall of the communication ring cavity, a plug hole is formed in the center of the piston disc, the piston disc is annularly provided with a drainage hole around the plug hole, the plug rod is arranged in the plug hole, the length of the plug rod is greater than the depth of the plug hole, the top end of the plug rod is fixedly connected with a compression disc, and the bottom end of the plug rod is fixedly connected with a sealing magnetic suction disc, the sealing magnetic suction disc covers the vertical projection of all the drainage holes, the supporting spring is sleeved on the plug rod between the compression disc and the piston disc, and the magnetic force column is installed in the pipeline below the sealing magnetic suction disc through the supporting magnetic frame.

[0017] Further, a limiting wall ring is arranged in the piston column cavity, and the limiting wall ring is located above the communication position of the liquid flow grooves and the piston column cavity.

[0018] Further, when the piston disc moves to the lowest position, the sealing magnetic suction disc is magnetically connected with the magnetic force column.

[0019] Further, the lower surface of the cooling box is provided with heat exchange fins.

[0020] Further, the table plate is in the structure of a rectangular plate body, the table legs are arranged at the four corners of the bottom of the table plate, and the adjacent table legs are fixedly connected through beams.

[0021] The composite insulator precision infrared detection test device can simulate the defect heating of the composite insulator, facilitate infrared precision detection test, and is beneficial to infrared detection teaching of the composite insulator. Compared with the traditional teaching method of real-time detection on site, the device is not limited by the site, and low-voltage simulation is safer. The device can simulate the temperature measurement image of the ground shooting angle by adjusting the setting of the adjusting seat mechanism, so that the same condition analysis is facilitated. The device can also quickly cool the composite insulator by pouring flowing liquid into the cooling cavity through the heat exchange mechanism, realize temperature reset in a short time, and improve the teaching efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the precision infrared detection test device for composite insulators in an embodiment of the present invention;

[0024] Figure 2 This is a front view of the precision infrared detection test device for composite insulators in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the precision infrared detection test device for composite insulators from another perspective in an embodiment of the present invention;

[0026] Figure 4 for Figure 1 A three-dimensional half-section diagram at the mid-Y axis;

[0027] Figure 5 for Figure 4 A schematic diagram of the cross-sectional view;

[0028] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 for Figure 1 A three-dimensional half-section diagram at the central X-axis;

[0030] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0031] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0032] Figure 10 for Figure 7 The front view of the mid-section view.

[0033] Reference numerals: 1. Platform; 2. Composite insulator; 3. Cooling chamber; 4. Simulated heating ring; 5. Cooling box; 6. Liquid pump; 7. T-junction; 8. Solenoid valve; 9. Discharge pipe; 10. Return pipe; 11. Bidirectional interlocking pipe; 12. Crossbeam; 13. Connecting end sleeve; 14. Injection pipe; 15. Swinging tongue plate; 16. Sector-shaped component; 17. Swinging set screw; 18. Table leg; 19. Sector-shaped plate; 20. Connecting base plate; 21. Arc-shaped through groove; 22. Pin; 23. 24. Rotating base; 25. Rotating retaining shaft; 26. Retaining shaft clamp; 27. Rotating set screw; 28. Fixed edge; 29. ​​Set screw fixing plate; 20. Inverted suction cup; 30. Piston plate; 31. Inverted suction spring; 32. Insert rod; 33. Support spring; 34. Magnetic column; 35. Supporting magnetic frame; 36. Piston column cavity; 37. Connecting ring cavity; 38. Liquid flow channel; 39. Drain hole; 40. Pressure plate; 41. Sealing magnetic chuck; 42. Limiting wall ring; 43. Heat exchange fins. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] like Figures 1 to 10 The precision infrared detection test device for composite insulators shown includes: a platform 1, a composite insulator 2, an adjustment base mechanism, and a heat exchange mechanism; wherein,

[0038] The tabletop 1 has a rectangular plate structure. Table legs 18 are provided at the four corners of the bottom of the tabletop 1. Adjacent table legs 18 are connected and fixed by crossbeams 12. The tabletop 1 mainly serves a supporting function.

[0039] The composite insulator 2 is installed on the platform 1 through the adjusting seat mechanism, an axial cooling cavity 3 is arranged in the center of the composite insulator 2, and a plurality of simulated electric heating rings 4 are embedded in the composite insulator 2 from top to bottom. In use, the simulated electric heating rings 4 are powered to generate heat, and the simulated electric heating rings 4 can be controlled to generate heat through PLC or single-chip microcomputer programming. The local position of the test composite insulator 2 is heated, and then infrared temperature imaging is used to shoot at a specific angle, so that the test simulation is realized.

[0040] The adjusting seat mechanism is used to adjust the inclination angle of the composite insulator 2.

[0041] The heat exchange mechanism includes a cooling box 5, a liquid pump 6, a three-way pipe 7, an electromagnetic valve 8 and a liquid outlet pipe 9. The cooling box 5 and the liquid pump 6 are installed on the lower surface of the platform 1. The liquid pump 6 is communicated with the liquid outlet of the cooling box 5 and the three-way pipe 7 through pipes. The remaining connection ends of the three-way pipe 7 are communicated with a reflux pipe 10 and a bidirectional interaction pipe 11. The other end of the reflux pipe 10 is communicated with the liquid return port at the top of the cooling box 5. The electromagnetic valve 8 is installed on the reflux pipe 10. The other end of the bidirectional interaction pipe 11 is communicated with the bottom inlet of the cooling cavity 3. The two ends of the liquid outlet pipe 9 are communicated with the top outlet of the cooling cavity 3 and the top liquid inlet of the cooling box 5.

[0042] The precision infrared detection test device of the composite insulator in the embodiment needs to change the heating position after the first simulation is completed. The liquid pump 6 starts to operate, and the electromagnetic valve 8 enters the closed state. At this time, the liquid pump 6 draws the cooling liquid from the cooling box 5, and then flows through the three-way pipe 7 and the bidirectional interaction pipe 11 to enter the cooling cavity 3. After the cooling cavity 3 is filled with the cooling liquid, the cooling liquid is discharged from the liquid outlet pipe 9 and returns to the cooling box 5. The whole process forms a circulating heat exchange process. The cooling liquid flows into the cooling cavity 3 for heat exchange for multiple times, so that the simulation electric heating ring 4 of the last heating is rapidly cooled. When entering the next simulation, only the liquid pump 6 can be closed, and the liquid in the cooling cavity 3 can not flow. At this time, the simulation electric heating ring 4 of the next position is powered and heated. However, this way will still have a certain degree of heat transfer due to the remaining cooling liquid in the cooling cavity 3, which affects the local heating effect. The embodiment discloses another relatively optimal way. Specifically, after the cooling is completed, the electromagnetic valve 8 is opened, and the cooling liquid in the cooling cavity 3 flows under the action of gravity. The cooling liquid flows back to the cooling box 5 through the bidirectional interaction pipe 11 and the return pipe 10. Here, the liquid in the cooling cavity 3 needs to be slowly discharged. In order to speed up the discharge, the liquid outlet pipe 9 can be separated from the cooling cavity 3, so that air quickly flows in. However, this way needs to separate the connection between the liquid outlet pipe 9 and the cooling cavity 3 every time the liquid is discharged, which is relatively cumbersome. Moreover, the cooling liquid is easy to scatter on the table plate 1 during the separation process. Based on the above cognition, the embodiment further proposes a more optimal way, which will be described later. However, the above scheme can meet the teaching requirements and simulate the real heating, and still belongs to the protection scope of the application.

[0043] As shown in Figures 4 to 7 As a specific disclosure of the above embodiment, the adjusting seat mechanism includes a butt joint end sleeve 13, an injection pipeline 14, a swing tongue plate 15, a fan-shaped piece 16 and a swing top wire 17. The butt joint end sleeve 13 is fixedly connected to the bottom of the composite insulator 2. The butt joint end sleeve 13 has a flow-through cavity. The top of the flow-through cavity is in communication with the cooling cavity 3, and the bottom of the flow-through cavity is in communication with the injection pipeline 14. The top of the swing tongue plate 15 is fixedly connected to the butt joint end sleeve 13. The fan-shaped piece 16 includes two symmetrical fan-shaped plates 19 and a connecting bottom plate 20 connected between the bottoms of the two fan-shaped plates 19. The top of the fan-shaped plate 19 has an arc-shaped through slot 21. The swing tongue plate 15 is located between the two fan-shaped plates 19 and is rotatably connected to the two fan-shaped plates 19 through a pin shaft 22 at the bottom end. The swing top wire 17 penetrates through the arc-shaped through slot 21 and is connected with the swing tongue plate 15. When the adjusting seat mechanism of the embodiment adjusts the angle, the swing top wire 17 is first loosened, then the swing tongue plate 15 is rotated to any angle of the arc-shaped through slot 21, the swing top wire 17 is tightened to make it in frictional contact with the fan-shaped plate 19, the position of the swing tongue plate 15 is fixed, and the angle adjustment of the composite insulator 2 is realized, so that the temperature measurement image of the ground shooting angle can be simulated.

[0044] In order to realize the multi-angle display of the composite insulator 2, the adjusting seat mechanism further comprises a rotating base 23, a rotating clamping shaft 24, a clamping shaft chuck 25 and a rotating top screw 26. The rotating base 23 is arranged above the table plate 1 through the fixed eaves 27 at the end, and a disc core hole is formed in the center of the rotating base 23. The top end of the rotating clamping shaft 24 is fixedly connected with the connecting bottom plate 20, and the bottom end penetrates through the disc core hole and is fixedly connected with the clamping shaft chuck 25. The connecting bottom plate 20 extends outward to form a top screw fixing plate 28. The rotating top screw 26 penetrates through the threaded hole arranged on the top screw fixing plate 28 and is connected with the upper surface of the rotating base 23. By loosening the rotating top screw 26, the limiting of the rotating clamping shaft 24 can be released. At this time, the composite insulator 2 is rotated left and right. After the angle is adjusted, the rotating top screw 26 is tightened to realize the rotation fixation of the composite insulator 2, which is more convenient to approach the real shooting angle and has more practicality.

[0045] In order to facilitate the connection of the composite insulator 2 to the butt joint end sleeve 13, the bottom end of the composite insulator 2 is inserted into the top opening of the flow cavity. After the insertion is completed, the composite insulator 2 can be fixed through the sealing bolts on the side wall of the butt joint end sleeve 13, which is convenient for butt joint.

[0046] As a preferred embodiment of the above embodiment, in order to facilitate the rapid emptying of the cooling liquid in the cooling cavity 3, a back suction mechanism with a rapid liquid emptying function is arranged between the bidirectional interaction pipe 11 and the three-way pipe 7. Specifically, the back suction mechanism comprises a back suction kettle 29, a piston disc 30, a back suction compression spring 31, a plug rod 32, a supporting spring 33, a magnetic column 34 and a supporting magnetic frame 35. The back suction kettle 29 is internally provided with a piston column cavity 36 and a communication ring cavity 37 located at the top of the piston column cavity 36. The diameter of the communication ring cavity 37 is larger than that of the piston column cavity 36. A plurality of liquid flow grooves 38 are formed around the upper half of the piston column cavity 36 of the back suction kettle 29. The top of the liquid flow groove 38 is in communication with the communication ring cavity 37, and the bottom is in communication with the piston column cavity 36. The piston disc 30 is located in the piston column cavity 36. The back suction compression spring 31 is arranged between the top of the piston disc 30 and the top wall of the communication ring cavity 37. A plug hole is formed in the center of the piston disc 30. The piston disc 30 is annularly provided with a flow discharge hole 39 around the plug hole. The plug rod 32 is arranged in the plug hole. The length of the plug rod 32 is greater than the depth of the plug hole. The top end of the plug rod 32 is fixedly connected with a pressure disc 40, and the bottom end is fixedly connected with a sealing magnetic suction disc 41. The vertical projection of the sealing magnetic suction disc 41 covers all the flow discharge holes 39. The supporting spring 33 is sleeved on the plug rod 32 between the pressure disc 40 and the piston disc 30. The magnetic column 34 is installed in the pipeline below the sealing magnetic suction disc 41 through the supporting magnetic frame 35.

[0047] The specific use mode of the back suction mechanism of the embodiment is as follows:

[0048] After the end of a simulation, when the heat generating part needs to be changed, the composite insulator 2 is first cooled, and during the cooling process, the liquid pump 6 starts to operate, at this time, the electromagnetic valve 8 is in control association with the liquid pump 6, and the electromagnetic valve 8 changes from the open state to the closed state, and when the liquid pump 6 stops operating, the electromagnetic valve 8 is in the always-on state, and the liquid pump 6 extracts the cooling liquid in the cooling box 5, flows through the three-way valve 7, enters the bottom of the piston column cavity 36, and uses hydraulic pressure to drive the piston disc 30 to move upwards, when the piston disc 30 moves a distance, the magnetic attraction between the blocking magnetic disc 41 and the magnetic column 34 is lost, the blocking magnetic disc 41 moves upwards under the elastic force of the supporting spring 33, and blocks the lower end of the exhaust hole 39, at this time, the piston disc 30 is continuously moved upwards by hydraulic pressure, and when the piston disc 30 moves to the upper end of the liquid flow groove 38, the cooling liquid enters the communication ring cavity 37 through the liquid flow groove 38, is transported to the injection pipeline 14 from the bidirectional interaction pipe 11, and then enters the cooling cavity 3, so that the cooling is realized.

[0049] After the temperature drops to room temperature, the liquid pump 6 stops operating, and the electromagnetic valve 8 is opened, at this time, the piston disc 30 loses the hydraulic pressure, and quickly moves downwards under the elastic force of the back suction spring 31, and uses the piston structure of the piston disc 30 to suck the liquid in the cooling cavity 3 in the opposite direction, when the piston disc 30 moves to the position, as shown in Figure 9 , the magnetic attraction between the blocking magnetic disc 41 and the magnetic column 34 is lost, so that the blocking magnetic disc 41 moves downwards, at this time, the exhaust hole 39 is connected, and the accumulated liquid is discharged into the pipeline below through the exhaust hole 39, and then flows back to the cooling box 5. Through the setting of the back suction mechanism, the residual liquid in the cooling cavity 3 can be quickly discharged, and the liquid residue in the cooling cavity 3 can also be reduced by using the suction force.

[0050] In order to prevent the back suction spring 31 from contracting, and also to prevent the bottom of the piston disc 30 from entering the communication ring cavity 37, a limiting wall ring 42 is arranged in the piston column cavity 36, and the limiting wall ring 42 is located above the communication position of the liquid flow groove 38 and the piston column cavity 36, and the limiting wall ring 42 is used to limit the upward movement of the piston disc 30.

[0051] As shown in Figure 3 , in order to accelerate the cooling of the liquid in the cooling box 5, heat exchange fins 43 are arranged on the lower surface of the cooling box 5.

[0052] Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A precision infrared detection testing device for composite insulators, characterized in that, include: Platform (1), composite insulator (2), adjusting seat mechanism and heat exchange mechanism; among which, The composite insulator (2) is mounted on the platform (1) through the adjustment seat mechanism. An axially penetrating cooling cavity (3) is provided at the center of the composite insulator (2). Multiple simulated electric heating rings (4) are embedded inside the composite insulator (2) from top to bottom. The adjusting seat mechanism is used at least to adjust the tilt angle of the composite insulator (2); The heat exchange mechanism includes a cooling box (5), a liquid pump (6), a three-way valve (7), a solenoid valve (8), and an outlet pipe (9). The cooling box (5) and the liquid pump (6) are both installed on the lower surface of the platform (1). The liquid pump (6) is connected to the outlet of the cooling box (5) and the three-way valve (7) through pipes. The other ends of the three-way valve (7) are connected to a return pipe (10) and a bidirectional interactive pipe (11). The other end of the return pipe (10) is connected to the return port at the top of the cooling box (5). The solenoid valve (8) is installed on the return pipe (10). The other end of the bidirectional interactive pipe (11) is connected to the bottom inlet of the cooling chamber (3). The two ends of the outlet pipe (9) are connected to the top outlet of the cooling chamber (3) and the top inlet of the cooling box (5), respectively. A back suction mechanism with rapid liquid drainage function is also provided between the bidirectional interactive pipe (11) and the three-way valve (7); The suction mechanism includes a suction cup (29), a piston disc (30), a suction spring (31), a rod (32), a support spring (33), a magnetic column (34), and a support magnetic frame (35). The suction cup (29) has a piston column cavity (36) and a connecting ring cavity (37) located at the top of the piston column cavity (36). The diameter of the connecting ring cavity (37) is larger than the diameter of the piston column cavity (36). The suction cup (29) has multiple liquid flow channels (38) formed around the upper half of the piston column cavity (36). The top of the liquid flow channels (38) is connected to the connecting ring cavity (37), and the bottom is connected to the piston column cavity (36). The piston disc (30) is located inside the piston column cavity (36), and the suction spring (31) is disposed on the piston. Between the top of the disc (30) and the top wall of the connecting annular cavity (37), a through insertion hole is provided at the center of the piston disc (30). The piston disc (30) is surrounded by drainage holes (39). The insertion rod (32) passes through the insertion hole. The length of the insertion rod (32) is greater than the depth of the insertion hole. The top end of the insertion rod (32) is fixedly connected to a pressure plate (40), and the bottom end is fixedly connected to a sealing magnetic chuck (41). The sealing magnetic chuck (41) covers the vertical projection of all the drainage holes (39). The support spring (33) is sleeved on the insertion rod (32) between the pressure plate (40) and the piston disc (30). The magnetic column (34) is installed in the pipe below the sealing magnetic chuck (41) through the support magnetic frame (35).

2. The precision infrared detection and testing device for composite insulators according to claim 1, characterized in that, The adjusting seat mechanism includes a docking end sleeve (13), an injection pipe (14), a swing tongue plate (15), a fan-shaped component (16), and a swing set screw (17). The docking end sleeve (13) is fixedly connected to the bottom of the composite insulator (2). The docking end sleeve (13) has a flow cavity inside. The top of the flow cavity is connected to the cooling cavity (3), and the bottom is connected to the injection pipe (14). The top of the swing tongue plate (15) is fixedly connected to the docking end sleeve (13). The sector component (16) includes two symmetrically arranged sector plates (19) and a connecting base plate (20) connected between the bottoms of the two sector plates (19). The top of the sector plate (19) has an arc-shaped through groove (21). The swing tongue plate (15) is located between the two sector plates (19) and its bottom end is rotatably connected to the two sector plates (19) through a pin (22). The swing set screw (17) passes through the arc-shaped through groove (21) and is connected to the swing tongue plate (15).

3. The precision infrared detection and testing device for composite insulators according to claim 2, characterized in that, The adjustment seat mechanism also includes a rotating base (23), a rotating retaining shaft (24), a retaining shaft clamp (25), and a rotating set screw (26). The rotating base (23) is mounted on the platform (1) via a fixed end (27). The rotating base (23) has a central hole. The top end of the rotating retaining shaft (24) is fixedly connected to the connecting base plate (20), and the bottom end passes through the central hole and is fixedly connected to the retaining shaft clamp (25). The connecting base plate (20) extends outward to form a set screw fixing plate (28). The rotating set screw (26) passes through a threaded hole on the set screw fixing plate (28) and abuts against the upper surface of the rotating base (23).

4. The precision infrared detection and testing device for composite insulators according to claim 3, characterized in that, The bottom end of the composite insulator (2) is inserted into the top opening of the flow cavity.

5. The precision infrared detection and testing device for composite insulators according to claim 1, characterized in that, A limiting wall ring (42) is provided inside the piston column cavity (36), and the limiting wall ring (42) is located above the connection between the liquid flow channel (38) and the piston column cavity (36).

6. The precision infrared detection test device for composite insulators according to claim 5, characterized in that, When the piston disc (30) moves to its lowest position, the sealing magnetic chuck (41) is magnetically connected to the magnetic column (34).

7. The precision infrared detection and testing device for composite insulators according to claim 6, characterized in that, The lower surface of the cooling box (5) is provided with heat exchange fins (43).

8. The precision infrared detection test device for composite insulators according to claim 6, characterized in that, The tabletop (1) has a rectangular plate structure, and table legs (18) are provided at the four corners of the bottom of the tabletop (1). The adjacent table legs (18) are connected and fixed by crossbeams (12).

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