A device for testing the electrical performance of disconnect switches

Abstract

This application discloses an electrical performance testing device for disconnecting switches, relating to the field of disconnecting switch testing technology. It includes a high and low temperature test chamber, a resistance tester, pins, a station switching unit, and a testing unit. A drive assembly is located at the bottom of the upper part of the chamber cover, used to drive the pins of the testing unit and the resistance tester to move synchronously laterally. The station switching unit is located on the bottom surface inside the high and low temperature test chamber, used to move the disconnecting switch under test to a fixed position. Two sets of testing units are arranged in a mirror image at the left and right ends of the high and low temperature test chamber. Each unit includes an adjustment assembly for initial angle adjustment of the pins and a trigger assembly for fine-tuning the angle when the pins are obstructed during insertion into the disconnecting switch. The device achieves the technical effects of multi-dimensional adaptive adjustment to accommodate offset, resistance feedback to enhance corrective contact reliability, simultaneous multi-piece testing for improved testing efficiency, and multi-model compatible testing to expand its applicability.

Description

Technical Field

[0001] This invention relates to the field of disconnector switch testing technology, and in particular to a device for testing the electrical performance of disconnectors. Background Technology

[0002] Disconnecting switches are key electrical equipment in high-voltage power distribution systems. In smart grids, their intelligent upgrades can achieve rapid fault isolation, improving the level of grid automation and power supply reliability. Among these upgrades, electrical performance testing is the core link in ensuring the reliable operation of disconnecting switches. The core of electrical performance lies in whether the contact resistance of the contacts remains stable under long-term current-carrying and high-temperature environments, i.e., the conductivity under thermal stability. This testing point directly determines the actual operational reliability of the disconnecting switch.

[0003] Regarding the testing of the electrical performance of disconnect switches, Chinese invention patent CN118191582B discloses a thermal stability testing device and method for disconnect switches. The device includes a high and low temperature test chamber and a disconnect switch placed inside the chamber. Clamps for holding the disconnect switch are evenly distributed inside the chamber. A resistance tester is mounted on the upper surface of the chamber. Inlet ports are located on both sides of the chamber surface, with positioning mechanisms on the inner walls of the inlets. A moving mechanism is located on the inner surface of the chamber lid, and this moving mechanism is connected to the pins of the resistance tester via a clamping mechanism. This patent, by incorporating a clamping mechanism, facilitates the clamping of the pins on the resistance tester, enabling real-time measurement of the disconnect switch's resistance value under high-temperature conditions. This reduces measurement errors and further improves the accuracy of electrical performance testing.

[0004] While the above-mentioned solution improves testing efficiency to some extent when performing electrical performance testing on disconnecting switches at high temperatures, in actual use, the terminals of the disconnecting switch may experience multi-dimensional positional drift due to thermal expansion after heating in the high and low temperature test chamber. Furthermore, the connection holes of different terminal models have dimensional tolerances and angular deviations. Existing pin adjustments can only achieve single-plane angle adjustment and cannot adapt to multi-dimensional offsets. This leads to misalignment of the pin with the axis of the connection hole during pin insertion testing. Additionally, the rigid pin, under hydraulic feeding, will make hard contact with the hole wall. When the resistance is small, it may cause insertion jamming, forming a false contact, resulting in large fluctuations in the measured contact resistance. When the resistance is large, it may bend the pin or crush the terminal, leading to misjudgment of insulation faults and reducing the accuracy of the test results. Summary of the Invention

[0005] This application provides an electrical performance testing device for disconnecting switches, which solves the technical problems in the prior art, such as the inability of single-axis adjustment to adapt to the multi-dimensional position drift of high-temperature terminals, rigid hard contact causing jamming or damage, lack of resistance feedback leading to false contact misjudgment, repeated station switching resulting in low alignment efficiency, and inability to compensate for the tolerance deviation of different terminal models. It achieves the technical effects of multi-dimensional adaptive adjustment to adapt to offset, resistance feedback to enhance the reliability of corrective contact, one-time positioning for multi-piece testing to improve testing efficiency, and multi-model compatible testing to expand the scope of application.

[0006] This application provides an electrical performance testing device for disconnecting switches, including a high and low temperature test chamber, a cover, an inlet, a clamp, a resistance tester, a pin, a self-driven slide rail, a hydraulic scissor frame, a drive assembly, a station switching unit, and a testing unit.

[0007] The drive assembly is located at the bottom of the upper part of the cover and is used to drive the detection unit and the pin of the resistance tester to move synchronously laterally; the station switching unit is located on the bottom surface inside the high and low temperature test chamber and is used to move the isolation switch to be tested to a fixed position.

[0008] The detection unit consists of two sets arranged in a mirror image, located at the left and right ends of the high and low temperature test chamber. It includes an adjustment component for initial angle adjustment of the pin and a trigger component for fine-tuning the angle again when the pin is obstructed during the insertion of the isolating switch.

[0009] Furthermore, the resistance tester is externally equipped with test leads, a detection body, and pins;

[0010] One end of the test lead is electrically connected to the resistance tester, and the other end is fixed with a detection body. The pin is laterally slidably connected inside the detection body and electrically connected to the test lead through a wire. The resistance test is performed by inserting the pin into the connection hole of the disconnect switch to detect the electrical performance at high temperature.

[0011] Furthermore, the cover is located at the front end of the high and low temperature test chamber for sealing the chamber; both ends of the high and low temperature test chamber are detachably connected to locking blocks, and the lower end of each locking block has a wire inlet; the resistance tester is fixed to the upper end of the high and low temperature test chamber and is electrically connected to two pins via test leads; two self-driven slide rails are provided, respectively fixed to the left and right sides inside the high and low temperature test chamber; two hydraulic scissor brackets are provided, respectively slidably connected to the corresponding self-driven slide rails via electric sliders, for further adjusting the pin height.

[0012] Furthermore, the workstation switching unit includes a fixed base, a motor, a follower plate, a placement plate, and a fixture;

[0013] The fixed base is fixed to the bottom inside the high and low temperature test chamber; the motor is fixed inside the fixed base, and its output shaft is fixedly connected to the follower plate; the follower plate is rotatably connected to the top of the fixed base; the placement plate is fixed above the follower plate; multiple clamps are provided and arranged around the circumference of the placement plate, and are fixed to the placement plate in a detachable manner.

[0014] Furthermore, the adjustment assembly includes a support plate, a positioning ring, an adjustment ring, a connecting seat, an adjustment rope, and a winding drum;

[0015] The support plate is fixed to the end of the hydraulic scissor frame away from the self-driving slide rail; the positioning ring is fixed above the support plate and placed vertically; an inner ring is coaxially fixed inside the positioning ring; a hinge seat is connected to the middle of the inner ring by a ball joint, and the hinge seat has a spherical structure and is sleeved on the outer side of the end of the detection body near the test line.

[0016] The adjusting ring is a horizontally arranged ring structure with multiple connecting seats evenly arranged around its circumference on its outer side; multiple winding drums are provided and fixed on the outer side wall of the high and low temperature test chamber, corresponding one-to-one with the connecting seats, and the winding drums are driven to rotate by an internal motor; multiple adjusting ropes are provided and correspond one-to-one with the winding drums and connecting seats, one end of the adjusting rope is fixed on the connecting seat, and the other end passes through the side wall of the high and low temperature test chamber and is wound on the winding drum.

[0017] Furthermore, the drive assembly includes a slide rail, a movable plate, and a telescopic rod fixed to the inner side of the top of the box cover; two movable plates are provided, which are slidably connected to both ends of the slide rail by electric sliders; a telescopic rod is fixed to the bottom surface of the movable plate, and the telescopic rod is an electric telescopic rod;

[0018] The upper surface of the positioning ring is provided with a positioning hole. The telescopic end of the telescopic rod is extended and inserted into the corresponding positioning hole to achieve connection with the positioning ring and drive the positioning ring to move.

[0019] Furthermore, the hinge seat has two layers, namely an outer layer and an inner layer; the outer layer is made of rigid material and is rotatably connected to the middle of the inner ring; the inner layer is a flexible capsule structure and is fixed inside the outer layer.

[0020] An airbag is provided on the inner side of the adjustment ring. The airbag and the inner layer are respectively connected to an external air pump through a micro air channel. The two ends of the detection body are fixed by inflation.

[0021] Furthermore, the triggering component includes a slider, spring one, spring two, abutment block, and magnetic ring;

[0022] The slider is a ring-shaped structure, coaxially fixed to the outer side of the end of the pin near the adjusting ring; the slider is slidably connected to the detection body by a spring; the contact block is a trapezoidal structure, made of metal, and is slidably connected to the detection body radially by a spring; a guide slope is provided at the end of the slider near the contact block; the magnetic ring is an electrically controlled magnet, fixed in the middle of the inner side of the adjusting ring.

[0023] Furthermore, the triggering component also includes a pressure sensor disposed on the inner wall of the detection body and in contact with the spring, for monitoring the resistance encountered by the pin during insertion.

[0024] Furthermore, the pressure sensor transmits the detected data to an external control system, which then coordinates and controls the motors in the take-up drums at different positions, causing the take-up drums at the corresponding positions to perform corresponding winding or unwinding actions, thereby fine-tuning the position of the pin.

[0025] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0026] The motor drives the follower plate to rotate, causing multiple circumferential clamps to move sequentially. This, combined with the synchronous operation of two mirror detection units, enables continuous inspection of multiple items in a single positioning operation. The positioning ring, adjusting ring, and winding drum work together to pull the adjusting rope, causing the ball-jointed detection body to oscillate in multiple dimensions, achieving adaptive adjustment of the pin tilt angle. A pressure sensor monitors the pin insertion resistance, triggering a magnetic ring to attract the contact block. This, in coordination with the winding drum, fine-tunes the pin angle, achieving real-time correction during insertion and preventing pin bending or false contact caused by rigid contact, thus improving detection accuracy. The elastic buffering of spring one and the airbag further enhance the detection process. The flexible fixed detection body allows the pins to extend and retract flexibly, adapting to various terminal tolerances and expanding the scope of application. It effectively solves the technical problems of existing technologies, such as single-axis adjustment being unable to adapt to multi-dimensional positional drift of high-temperature terminals, rigid hard contact causing jamming or damage, lack of resistance feedback leading to false contact misjudgment, repeated station switching resulting in low alignment efficiency, and inability to compensate for tolerance deviations of different terminal models. It achieves the technical effects of multi-dimensional adaptive adjustment to adapt to offset, resistance feedback to enhance the reliability of corrective contact, single positioning for multi-part inspection to improve inspection efficiency, and multi-model compatible inspection to expand the scope of application. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the electrical performance testing device for disconnecting switches according to the present invention.

[0028] Figure 2 This is a partial structural schematic diagram of an electrical performance testing device for disconnecting switches according to the present invention.

[0029] Figure 3This is a schematic diagram of the workstation switching unit of the electrical performance testing device for disconnecting switches according to the present invention.

[0030] Figure 4 This is a schematic diagram of the detection unit, hydraulic scissor frame, and self-driving slide rail of the electrical performance testing device for disconnecting switches according to the present invention.

[0031] Figure 5 This is a side view of the testing unit and hydraulic scissor frame of the electrical performance testing device for disconnecting switches according to the present invention.

[0032] Figure 6 This is a schematic diagram of the positioning ring, adjusting ring, and detection body of the electrical performance testing device for disconnecting switches according to the present invention.

[0033] Figure 7 This is a longitudinal full sectional view of the testing unit of the electrical performance testing device for disconnecting switches according to the present invention.

[0034] Figure 8 This invention relates to an electrical performance testing device for disconnecting switches. Figure 7 A magnified view of a portion of point A in the middle.

[0035] Figure 9 This is a partial structural diagram of the cover and moving plate of the electrical performance testing device for disconnecting switches according to the present invention.

[0036] In the diagram: 100, High and Low Temperature Test Chamber; 101, Chamber Cover; 102, Cable Inlet; 103, Locking Block; 110, Resistance Tester; 111, Test Lead; 112, Detector; 113, Pin; 130, Self-Driven Slide Rail; 140, Hydraulic Scissor Bracket; 150, Moving Plate; 151, Telescopic Rod; 200, Station Switching Unit; 210, Fixed Base; 220, Motor 1; 230, Follow-up Plate; 240, Placement Plate; 2 50. Fixture; 300. Detection unit; 310. Support plate; 320. Positioning ring; 321. Inner ring; 322. Hinge seat; 323. Positioning hole; 330. Adjusting ring; 331. Connecting seat; 332. Adjusting rope; 333. Airbag; 340. Winding drum; 350. Trigger assembly; 351. Slider; 352. Spring 1; 353. Spring 2; 354. Contact block; 355. Magnetic ring; 360. Pressure sensor. Detailed Implementation

[0037] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0038] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0039] 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 limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] Example 1: As Figures 1 to 7 As shown, this application discloses an electrical performance testing device for disconnecting switches, including a high and low temperature test chamber 100, a chamber cover 101, a cable inlet 102, a card block 103, a resistance tester 110, a pin 113, a self-driven slide rail 130, a hydraulic scissor frame 140, a drive assembly, a station switching unit 200, and a testing unit 300.

[0041] The drive assembly is located at the bottom of the upper end of the cover 101 and is used to drive the detection unit 300 and the pin 113 of the resistance tester 110 to move synchronously laterally; the station switching unit 200 is located on the bottom surface inside the high and low temperature test chamber 100 and is used to move the isolation switch to be tested to a fixed position.

[0042] The detection unit 300 is provided in two sets, arranged in a mirror image, and set at the left and right ends of the high and low temperature test chamber 100. It includes an adjustment component for initial angle adjustment of the pin 113 and a trigger component 350 for fine angle adjustment when the pin 113 is blocked during the insertion of the disconnect switch.

[0043] like Figure 1 , Figure 2 and Figure 4 As shown, the resistance tester 110 is externally provided with test leads 111, a detection body 112 and a pin 113;

[0044] One end of the test lead 111 is electrically connected to the resistance tester 110, and the other end is fixed to the detection body 112. The pin 113 is laterally slidably connected inside the detection body 112 and electrically connected to the test lead 111 through a wire. The resistance test is performed by inserting the pin 113 into the connection hole of the disconnect switch to detect the electrical performance at high temperature.

[0045] The cover 101 is located at the front end of the high and low temperature test chamber 100 and is used to seal the high and low temperature test chamber 100. Both the left and right ends of the high and low temperature test chamber 100 are detachably connected to the locking blocks 103, and the lower end of the locking blocks 103 has a wire inlet 102. The resistance tester 110 is fixed at the upper end of the high and low temperature test chamber 100 and is electrically connected to two pins 113 through the test wire 111. Two self-driven slide rails 130 are provided and are fixed on the left and right sides inside the high and low temperature test chamber 100 respectively. Two hydraulic scissor brackets 140 are provided and are slidably connected to the corresponding self-driven slide rails 130 through electric sliders, and are used to further adjust the height of the pins 113.

[0046] like Figures 1 to 3 As shown, the workstation switching unit 200 includes a fixed base 210, a motor 220, a follower plate 230, a placement plate 240, and a fixture 250;

[0047] The fixed base 210 is fixed to the bottom of the inner side of the high and low temperature test chamber 100; the motor 220 is fixed inside the fixed base 210, and its output shaft is fixedly connected to the follower plate 230; the follower plate 230 is rotatably connected to the top of the fixed base 210; the placement plate 240 is fixed above the follower plate 230; multiple clamps 250 are provided and arranged around the placement plate 240, and are fixed to the placement plate 240 in a detachable manner.

[0048] This application enables continuous testing of multiple disconnect switches in a single positioning by setting up a workstation switching unit 200. Specifically, through the cooperation between the fixed base 210, motor 220, follower plate 230, placement plate 240 and multiple clamps 250 arranged circumferentially, motor 220 drives the follower plate 230 to rotate and drives the placement plate 240 and multiple clamps 250 to rotate synchronously, so that each set of disconnect switches to be tested moves to the testing position in sequence, and cooperates with the testing unit 300 to perform synchronous testing. This achieves the goal of completing the flow testing of multiple samples without repeated repositioning, and solves the problem of low efficiency caused by repeated alignment during workstation switching.

[0049] like Figures 4 to 7 As shown, the adjustment assembly includes a support plate 310, a positioning ring 320, an adjustment ring 330, a connecting seat 331, an adjustment rope 332, and a winding drum 340;

[0050] The support plate 310 is fixed to the end of the hydraulic scissor frame 140 away from the self-driven slide rail 130; the positioning ring 320 is fixed above the support plate 310 and placed vertically; an inner ring 321 is coaxially fixed to the inner side of the positioning ring 320; a hinge seat 322 is connected to the middle of the inner ring 321 by a ball joint, and the hinge seat 322 has a spherical structure and is sleeved on the outer side of the end of the detection body 112 near the test line 111;

[0051] The adjusting ring 330 is a transversely arranged ring structure, with multiple connecting seats 331 evenly arranged along its circumference on its outer side; multiple winding drums 340 are provided and fixed on the outer side wall of the high and low temperature test chamber 100, corresponding one-to-one with the connecting seats 331, and the winding drums 340 are driven to rotate by an internal motor; multiple adjusting ropes 332 are provided and correspond one-to-one with the winding drums 340 and the connecting seats 331, one end of the adjusting rope 332 is fixed on the connecting seat 331, and the other end passes through the side wall of the high and low temperature test chamber 100 and is wound on the winding drum 340.

[0052] This application enables multi-dimensional adaptive tilt adjustment of the pin 113 position by setting an adjustment component. Specifically, through the cooperation between the inner ring 321, hinge seat 322, adjustment ring 330, connecting seat 331, adjustment rope 332 and winding drum 340 on the inner side of the positioning ring 320, multiple winding drums 340 are independently driven by internal motors, and can independently wind or release the corresponding adjustment rope 332 and pull the adjustment ring 330, so that the hinge seat 322 of the detection body 112 around the ball can swing in multiple dimensions, flexibly adjust the tilt angle of the pin 113 in three-dimensional space, and realize multi-dimensional adaptive adjustment to adapt to the multi-dimensional position drift of the high-temperature terminal.

[0053] like Figure 1 and Figure 9 As shown, the drive assembly includes a slide rail fixed to the inner side of the top of the cover 101, a movable plate 150, and a telescopic rod 151; there are two movable plates 150, which are slidably connected to both ends of the slide rail by electric sliders; the bottom surface of the movable plate 150 is fixed with a telescopic rod 151, which is an electric telescopic rod.

[0054] The upper surface of the positioning ring 320 is provided with a positioning hole 323. The telescopic end of the telescopic rod 151 extends out and is inserted into the corresponding positioning hole 323 to achieve connection with the positioning ring 320 and drive the positioning ring 320 to move.

[0055] like Figures 4 to 8 As shown, the hinge seat 322 has two layers, namely an outer layer and an inner layer; the outer layer is made of rigid material and is rotatably connected to the middle of the inner ring 321; the inner layer is a flexible capsule structure and is fixed to the inside of the outer layer.

[0056] An airbag 333 is provided on the inner side of the adjustment ring 330. The airbag 333 and the inner layer are respectively connected to an external air pump through a micro air channel. The airbag 333 is inflated to fix the two ends of the detection body 112.

[0057] This application achieves compatibility and adaptation of multiple terminal models by setting a flexible fixing structure of double-layer hinge seat 322 and airbag 333. Specifically, through the cooperation between the hinge seat 322 with a rigid outer layer and a flexible inner layer and the airbag 333 inside the adjusting ring 330, an external air pump inflates the airbag 333 and the inner layer of the hinge seat 322. The flexible airbag expands and tightly wraps the two ends of the detection body 112 of different diameters, further adaptively fixing the detection body 112 of different specifications, thus solving the problem of being unable to compensate for the tolerance deviation of different terminal models and the limited scope of application.

[0058] like Figures 4 to 8 As shown, the triggering component 350 includes a slider 351, a first spring 352, a second spring 353, a contact block 354, and a magnetic ring 355;

[0059] The slider 351 is a ring-shaped structure and is coaxially fixed to the outer side of the end of the pin 113 near the adjusting ring 330. The slider 351 is slidably connected to the detection body 112 by a spring 352. The contact block 354 is a trapezoidal structure made of metal and is slidably connected to the detection body 112 radially by a spring 353. A guide slope is provided at the end of the slider 351 near the contact block 354. The magnetic ring 355 is an electrically controlled magnet and is fixed in the middle of the inner side of the adjusting ring 330.

[0060] The triggering component 350 also includes a pressure sensor 360 disposed on the inner wall of the detection body 112 and in contact with the spring 352, for monitoring the resistance encountered by the pin 113 during insertion.

[0061] The pressure sensor 360 transmits the detected data to the external control system, which then coordinates and controls the motors in the take-up drums 340 at different positions, so that the take-up drums 340 at the corresponding positions perform corresponding winding or unwinding actions to fine-tune the position of the insert pin 113.

[0062] This application achieves resistance feedback and real-time correction adjustment through the coordinated operation of the trigger component 350 and the adjustment component. Specifically, through the cooperation between the slider 351, spring 1 352, spring 2 353, contact block 354, magnetic ring 355 and pressure sensor 360, when the hydraulic scissor holder 140 pushes the insertion pin 113 and encounters resistance, the pin 113 automatically retracts and drives the slider 351 to squeeze spring 1 352. At the same time, the guide slope pushes the contact block 354 to overcome the elastic force of spring 2 353 and move closer to the magnetic ring 355, where it is attracted and fixed. Spring 1 352 further compresses and squeezes the pressure sensor 360. When the resistance reaches the threshold, the external control system coordinates the action of the winding drum 340 and fine-tunes the tilt angle of the pin 113 to achieve dynamic correction of the insertion path, further avoiding hard contact damage. This solves the problems of jamming or damage caused by hard contact and false contact misjudgment caused by lack of resistance feedback, and further improves the accuracy of the detection results.

[0063] It should be noted that the detection temperature range under high-temperature conditions in this application is +45℃ to +120℃. Specifically, the inner layer of the bladder structure in the hinge seat 322 and the outer layer of the airbag 333 are coated with a high-temperature resistant coating. This coating is specifically a fluorosilicone rubber-based heat-resistant coating or a polyimide coating, with a long-term operating temperature range of -60℃ to +200℃. The pressure sensor 360 and the electrically controlled magnetic ring 355 are coated with a modified organosilicon aluminum powder heat-resistant paint with high-temperature resistance, having a temperature range of -40℃ to 150℃. These coatings not only effectively block external heat radiation and reduce the temperature of the components, but also prevent aging and hardening of the flexible bladder structure, drift of the pressure sensor 360, or demagnetization of the electrically controlled magnetic ring 355 caused by localized overheating, thereby ensuring the long-term reliable operation of the detection device in high-temperature environments. All of the above are applicable to electrical performance testing under high-temperature conditions and are existing technologies, which will not be elaborated upon here.

[0064] In addition, the test lines 111 of the resistance tester 110 are provided with a shielding cover, and all electrical control components inside the box (including the self-driven slide rail 130, motor 220, electric slider, hydraulic scissor frame 140, winding drum 340 and its internal motor, electric slider, telescopic rod 151, pressure sensor 360 and other electrical connections) are provided with electromagnetic shielding covers to eliminate detection interference and further improve detection accuracy.

[0065] In actual operation, the steps of this embodiment are as follows:

[0066] S1: Open the cover 101 of the high and low temperature test chamber 100, place the isolation switch to be tested on the fixture 250 in sequence, and pass the test wire 111, the detection body 112, and the pin 113 on the resistance tester 110 through the inlet 102 in the card block 103 and extend them into the high and low temperature test chamber 100.

[0067] S2: The detection body 112 is passed through the hinge seat 322 and the adjusting ring 330 in sequence. When the adjusting ring 330 is sleeved on the end of the detection body 112 near the insertion pin 113, the internal air bag 333 is inflated to fix the head. When the detection body 112 continues to move until the hinge seat 322 is sleeved on the tail end of the detection body 112, air is inflated to fix the tail. After the adjusting ring 330 fixes it and during the continued movement, the winding drum 340 located outside the high and low temperature test chamber 100 releases the adjusting rope 332 to adapt to the movement of the detection body 112.

[0068] S3: After the detection body 112 is fixed, multiple winding drums 340 in different positions wind and unwind respectively, so that the detection body 112 is in a suitable angle position; the electric slider drives the corresponding moving plate 150 to move above the corresponding positioning ring 320, and the telescopic rod 151 controls its telescopic end to extend and insert into the corresponding positioning hole 323. Then, with the cooperation of the hydraulic scissor frame 140, the lateral positioning of the pin 113 is achieved. Then the telescopic rod 151 controls its telescopic end to retract, and the connection with the positioning ring 320 is released; the motor 220 is started and drives the follower plate 230 to rotate, driving the clamp 250 to move to the designated position in sequence, so that the disconnecting switch connection hole and the pins 113 on both sides are in the same vertical plane;

[0069] S4: A current is applied to the magnetic ring 355 to make it magnetic. Simultaneously, the hydraulic scissor holder 140 extends and pushes the pin 113 into the connection hole. During the gradual extension and insertion of the hydraulic scissor holder 140, if the pin 113 is continuously obstructed, the pin 113 moves to push the contact block 354 and compress the second spring 353. At the same time, the first spring 352 is also compressed. When the contact block 354 moves to the point where the magnetic ring 355 has a magnetic attraction to it (i.e., as the contact block 354 moves closer to the magnetic ring 355, the distance between them decreases, making the distance small enough for the magnetic ring 355 to attract the contact block 354), the magnetic attraction force is greater than the elastic force of the second spring 353, making... The contact block 354 is attracted and fixed in place. At this time, the pin 113 continues to move inside the detection body 112. When the spring 352 is pushed into the detection body 112 due to the obstruction of the pin 113, the spring 352 pushes the pressure sensor 360. When the pressure sensor 360 reaches the threshold, it transmits the detected data to the external control system. Then, the external control system coordinates and controls the motors in the take-up drums 340 at different positions, so that the take-up drums 340 at the corresponding positions perform corresponding take-up or release actions to fine-tune the position of the pin 113 so that the pin 113 can be fully inserted into the connection hole of the disconnect switch for detection.

[0070] S5: After the pin 113 is fully inserted, the resistance tester 110 connects the pin 113 and the disconnecting switch through the test line 111 and the detection body 112 to measure the contact resistance and evaluate the electrical performance at high temperature.

[0071] S6: After completing the inspection of one sample, motor 220 drives the follower plate 230 to rotate, and the next fixture 250 moves to the inspection position. Repeat step six to achieve continuous inspection of multiple items.

[0072] S7: After all the tests are completed, the hydraulic scissor holder 140 is controlled to drive the pin 113 back to its original position. At this time, the pin 113 is no longer obstructed and returns to its original position under the pushing action of the spring 352 returning to its original length. The magnetic ring 355 is de-energized, so that the magnetic attraction disappears. The contact block 354 returns to its original position under the pushing action of the spring 353 returning to its original length. The electric slider drives the corresponding moving plate 150 back to its original position.

[0073] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0074] This invention solves the technical problems in existing technologies, such as the inability of single-axis adjustment to adapt to multi-dimensional position drift of high-temperature terminals, rigid hard contact causing jamming or damage, lack of resistance feedback leading to false contact misjudgment, repeated station switching resulting in low alignment efficiency, and inability to compensate for tolerance deviations of different terminal models. It achieves the technical effects of multi-dimensional adaptive adjustment to adapt to offset, resistance feedback to enhance the reliability of corrective contact, one-time positioning for multiple parts inspection to improve inspection efficiency, and multi-model compatible inspection to expand the scope of application.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for testing the electrical performance of a disconnecting switch, characterized in that, It includes a high and low temperature test chamber (100), a cover (101), a cable inlet (102), a locking block (103), a resistance tester (110), a pin (113), a self-driven slide rail (130), a hydraulic scissor frame (140), a drive assembly, a station switching unit (200), and a testing unit (300). The drive assembly is located at the bottom of the upper end of the cover (101) and is used to drive the detection unit (300) and the pin (113) of the resistance tester (110) to move synchronously laterally; the station switching unit (200) is located on the bottom surface inside the high and low temperature test chamber (100) and is used to move the isolation switch to be tested to a fixed position. The detection unit (300) is provided in two sets, arranged in a mirror image, and set at the left and right ends of the high and low temperature test chamber (100). It includes an adjustment component for initial angle adjustment of the pin (113) and a trigger component (350) for fine angle adjustment when the pin (113) is blocked during the insertion of the disconnect switch detection process.

2. The electrical performance testing device for a disconnecting switch according to claim 1, characterized in that, The resistance tester (110) is externally provided with test leads (111), a detection body (112) and a pin (113). One end of the test lead (111) is electrically connected to the resistance tester (110), and the other end is fixed with a detection body (112). The pin (113) is laterally slidably connected inside the detection body (112) and electrically connected to the test lead (111) through a wire. The resistance test is performed by inserting the pin (113) into the connection hole of the disconnect switch to detect the electrical performance at high temperature.

3. The electrical performance testing device for a disconnecting switch according to claim 1, characterized in that, The cover (101) is located at the front end of the high and low temperature test chamber (100) and is used to seal the high and low temperature test chamber (100). Both ends of the high and low temperature test chamber (100) are connected to the locking blocks (103) in a detachable manner. The lower end of the locking blocks (103) is provided with a wire inlet (102). The resistance tester (110) is fixed at the upper end of the high and low temperature test chamber (100) and is electrically connected to two pins (113) through the test wire (111). There are two self-driven slide rails (130), which are fixed on the left and right sides inside the high and low temperature test chamber (100) respectively. There are two hydraulic scissor frames (140), which are slidably connected to the corresponding self-driven slide rails (130) through electric sliders and are used to further adjust the height of the pins (113).

4. The electrical performance testing device for a disconnecting switch according to claim 1, characterized in that, The workstation switching unit (200) includes a fixed base (210), a motor (220), a follower plate (230), a placement plate (240), and a fixture (250). The fixed base (210) is fixed to the bottom of the inner side of the high and low temperature test chamber (100); the motor (220) is fixed inside the fixed base (210), and its output shaft is fixedly connected to the follower plate (230); the follower plate (230) is rotatably connected to the top of the fixed base (210); the placement plate (240) is fixed above the follower plate (230); multiple clamps (250) are provided, arranged around the placement plate (240), and fixed to the placement plate (240) in a detachable manner.

5. The electrical performance testing device for a disconnecting switch according to claim 1, characterized in that, The adjustment assembly includes a support plate (310), a positioning ring (320), an adjustment ring (330), a connecting seat (331), an adjustment rope (332), and a winding drum (340). The support plate (310) is fixed to the end of the hydraulic scissor frame (140) away from the self-driving slide rail (130); the positioning ring (320) is fixed above the support plate (310) and placed vertically; an inner ring (321) is coaxially fixed inside the positioning ring (320); a hinge seat (322) is connected to the middle of the inner ring (321) by a ball joint, and the hinge seat (322) has a spherical structure and is sleeved on the outer side of the end of the detection body (112) near the test line (111); The adjusting ring (330) is a transversely arranged ring structure with multiple connecting seats (331) evenly arranged on its outer side along its circumference; multiple winding drums (340) are provided and fixed on the outer side wall of the high and low temperature test chamber (100), corresponding one-to-one with the connecting seats (331), and the winding drums (340) are driven to rotate by an internal motor; multiple adjusting ropes (332) are provided and correspond one-to-one with the winding drums (340) and connecting seats (331), one end of the adjusting rope (332) is fixed on the connecting seat (331), and the other end passes through the side wall of the high and low temperature test chamber (100) and is wound on the winding drum (340).

6. The electrical performance testing device for a disconnecting switch according to claim 5, characterized in that, The drive assembly includes a slide rail, a movable plate (150), and a telescopic rod (151) fixed to the inner side of the top of the box cover (101); there are two movable plates (150), which are slidably connected to both ends of the slide rail by electric sliders; the bottom surface of the movable plate (150) is fixed with a telescopic rod (151), which is an electric telescopic rod; The upper surface of the positioning ring (320) is provided with a positioning hole (323). The telescopic end of the telescopic rod (151) is extended and inserted into the corresponding positioning hole (323) to achieve connection with the positioning ring (320) and drive the positioning ring (320) to move.

7. The electrical performance testing device for a disconnecting switch according to claim 5, characterized in that, The hinge seat (322) has two layers, namely an outer layer and an inner layer; the outer layer is made of rigid material and is rotatably connected to the middle of the inner ring (321); the inner layer is a flexible capsule structure and is fixed inside the outer layer. An airbag (333) is provided on the inner side of the adjustment ring (330). The airbag (333) and the inner layer are connected to an external air pump through a micro air channel. The two ends of the detection body (112) are fixed by inflation.

8. The electrical performance testing device for a disconnecting switch according to claim 1, characterized in that, The triggering component (350) includes a slider (351), a first spring (352), a second spring (353), a stop block (354), and a magnetic ring (355). The slider (351) is a ring structure and is coaxially fixed to the outer side of the end of the pin (113) near the adjusting ring (330); the slider (351) is slidably connected to the detection body (112) by spring one (352); the abutment block (354) is a trapezoidal structure, made of metal, and is slidably connected to the detection body (112) radially by spring two (353); the slider (351) is provided with a guide slope at the end near the abutment block (354); the magnetic ring (355) is an electrically controlled magnet and is fixed in the middle of the inner side of the adjusting ring (330).

9. The electrical performance testing device for a disconnecting switch according to claim 8, characterized in that, The trigger assembly (350) also includes a pressure sensor (360) disposed on the inner wall of the detection body (112) and in contact with the spring (352) for monitoring the resistance encountered by the pin (113) during insertion.

10. The electrical performance testing device for a disconnecting switch according to claim 9, characterized in that, The pressure sensor (360) transmits the detected data to the external control system, which then coordinates the motors in the take-up drums (340) at different positions to perform corresponding take-up or release actions, thereby fine-tuning the position of the insert pin (113).

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