A voltage-withstanding testing device for concentrator

Abstract

The application discloses a kind of concentrator pressure-withstanding verification device, belong to concentrator verification technical field, to solve in the process of pressure-withstanding verification to concentrator, when early insulation hidden danger such as micro flashover, local weak discharge occurs in concentrator insulation part, it is not easy to be captured in time by traditional monitoring module, and then cause potential insulation defect missed detection problem, application includes pressure-withstanding detection table, two two-way gas path components are installed in pressure-withstanding detection table side, a plurality of support components are arranged in pressure-withstanding detection table, concentrator main body is arranged in support component, terminal row is fixedly connected at the bottom of concentrator main body, two groups of sealing components are arranged in pressure-withstanding detection table, the gas in sealing cavity can be driven directional closed loop circulation by the application, ozone generated by weak discharge is transported to detection site quickly, concentration change is captured accurately, field electromagnetic interference is avoided, the detection sensitivity of micro flashover and early weak discharge is improved, and the missing rate of misjudgment is reduced.

Description

Technical Field

[0001] This invention relates to the field of concentrator testing technology, specifically to a concentrator pressure resistance testing device. Background Technology

[0002] The concentrator withstand voltage test device is a device used to test the electrical insulation strength and resistance to electrical breakdown of the concentrator. By applying a specified power frequency withstand voltage test voltage to the concentrator's terminals, internal insulation structure and circuit system, and by monitoring the equipment's leakage current, discharge state and insulation integrity, it determines whether the concentrator meets the insulation safety requirements for factory delivery and operation. It is a key special equipment in the production testing, quality control and operation and maintenance verification of concentrators.

[0003] When the current concentrator withstand voltage testing device is in use, if early insulation problems such as micro-flashover or local weak discharge occur in the insulation part of the concentrator, the discharge energy is weak and the current change is minimal, making it difficult for traditional monitoring modules to detect them in time. This can lead to missed detection of potential insulation defects, creating safety hazards for the later operation of the equipment and making it difficult to meet the requirements of high-precision concentrator withstand voltage testing.

[0004] To address the above issues, a pressure resistance testing device for concentrators is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a withstand voltage testing device for concentrators. By using this invention, the problem mentioned above is solved: during the withstand voltage testing of concentrators, when early insulation hazards such as micro-flashovers and local weak discharges occur in the insulation parts of the concentrator, they are not easily detected in time by traditional monitoring modules, thus causing potential insulation defects to be missed.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A pressure withstand capability testing device for a concentrator includes a pressure withstand testing platform. Two bidirectional gas path assemblies are installed on one side of the platform. Several support assemblies are arranged inside the platform, and a concentrator body is housed within each support assembly. A terminal block is fixedly connected to the bottom of the concentrator body. Two sets of sealing assemblies are arranged inside the platform, each corresponding to one of the support assemblies. A pressure sensor is installed within each of the sealing assemblies. Guide assemblies are arranged on both sides of each support assembly and are fixedly connected to the sealing assemblies. A drive assembly is arranged inside each support assembly. A pressure detection assembly is slidably arranged within the support assembly. A connecting assembly is located on top of the pressure detection assembly and is electrically connected to the pressure withstand testing platform and the terminal block. A gas circulation assembly is located at one end of the drive assembly, and an ozone sensor is installed within it. A dynamic compensation assembly is slidably arranged within the support assembly and is connected to the other end of the drive assembly.

[0007] Furthermore, the bidirectional air circuit assembly includes a bidirectional diaphragm air pump installed on one side of the pressure resistance test bench. One end of the bidirectional diaphragm air pump is connected to a first connecting pipe, and the other end of the bidirectional diaphragm air pump is connected to a second connecting pipe. One side of the second connecting pipe is connected to several branch pipes, and each of the several branch pipes is equipped with a solenoid valve.

[0008] Furthermore, the support assembly includes a support frame fixedly connected to the pressure resistance testing platform, a first sealing gasket fixedly connected to the top of the support frame, a branch pipe connected to the support frame, and a one-way valve connected to one side of the support frame.

[0009] Furthermore, the sealing assembly includes an L-shaped mounting plate fixedly connected to the pressure resistance testing platform. Several electric push rods are installed inside the L-shaped mounting plate. The movable ends of the electric push rods are all fixedly connected to a lifting frame. A pressure sensor is installed inside the lifting frame. A second sealing gasket is fixedly connected to the bottom of the lifting frame. A rubber pressure block is fixedly connected inside the lifting frame.

[0010] Furthermore, the guide assembly includes several fixed blocks that are relatively fixedly connected to both sides of the support frame. A guide rod is fixedly connected inside the fixed block, and a slider is slidably connected to the outer wall of the guide rod. The slider is fixedly connected to the lifting frame.

[0011] Furthermore, the drive assembly includes a dual-axis motor mounted within a support frame, with one output end of the dual-axis motor fixedly connected to a first rotating shaft and the other output end of the dual-axis motor fixedly connected to a second rotating shaft.

[0012] Furthermore, the pressure detection component includes several first springs that are relatively fixedly connected within the support frame. The bottom end of each first spring is fixedly connected to a first slide plate. The first slide plate is slidably connected to the inner wall of the support frame. A second slide plate is slidably connected to the inner wall of the support frame. A pressure sensor is installed inside the second slide plate, and the top of the pressure sensor is fixedly connected to the first slide plate. Several inclined plates are fixedly connected to the bottom of the second slide plate, and a first rotating roller is rotatably connected to each of the several inclined plates.

[0013] Furthermore, the connection assembly includes several fixed cylinders fixedly connected to the top of the first slide plate, a second spring fixedly connected inside the fixed cylinder, a conductive probe fixedly connected to the other end of the second spring, the conductive probe being connected to the terminal block, and the conductive probe being electrically connected to the withstand voltage testing station.

[0014] Furthermore, the gas circulation assembly includes a fan blade fixedly connected to one end of the second rotating shaft, a first L-shaped air outlet pipe connected to one side of the support frame, a corrugated pipe connected to one end of the first L-shaped air outlet pipe, and a second L-shaped air outlet pipe connected to the other end of the corrugated pipe. The second L-shaped air outlet pipe is connected to the lifting frame, and the ozone sensor is installed inside the first L-shaped air outlet pipe.

[0015] Furthermore, the dynamic compensation component includes a threaded rod fixedly connected to one end of the first rotating shaft, a threaded seat threadedly connected to the outer wall of the threaded rod, a plurality of second rotating rollers rotatably connected to the bottom of the threaded seat, a plurality of inclined blocks fixedly connected to the top of the threaded seat, and the first rotating rollers and the inclined blocks rollingly connected.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By combining the sealing component with the bidirectional gas path component and the pressure sensor, the concentrator can be quickly covered to form a sealed detection chamber, realizing the inflation, evacuation and micro-positive pressure stabilization control of the sealed chamber, ensuring the sealed and stable detection environment, avoiding pressure fluctuations from interfering with the verification, and greatly improving the controllability and stability of the detection environment. By combining the gas circulation component with the ozone sensor, the gas in the sealed cavity can be driven to directional closed-loop circulation, quickly delivering the ozone generated by the weak discharge to the detection position, accurately capturing concentration changes, avoiding on-site electromagnetic interference, improving the detection sensitivity of micro-flashover and early weak discharge, and reducing the false detection rate. By cooperating with the pressure detection component, dynamic compensation component, and drive component, the connection component can automatically complete the slight height compensation based on the clamping pressure signal, eliminate the problem of insufficient clamping force caused by probe wear, ensure stable electrical conduction, require no manual intervention, and extend the service life of the components. By setting up the guide component, the lifting and lowering movement of the sealing component can be precisely guided, ensuring accurate alignment of the sealing component cover. Combined with the double sealing gasket structure, it effectively prevents air leakage in the sealing cavity, continuously maintains a slightly positive pressure environment, and improves the alignment accuracy and sealing reliability of the sealing test. By setting up a two-way gas path component, the exhaust gas of the test can be extracted and purified. With the ozone decomposition filter, the ozone-containing gas is purified and discharged outdoors, clearing the internal environment of the sealed cavity, avoiding residual gas from interfering with the next test, and ensuring the consistency of the batch test environment. By combining the connecting components with the pressure detection components, a stable and secure electrical connection with the terminal block can be achieved, the clamping pressure can be monitored in real time, arcing caused by poor contact can be avoided, the accuracy of pressure resistance testing and ozone detection can be guaranteed, and the long-term use needs of batch automated verification of concentrators can be met. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 for Figure 1 Enlarged view of point A.

[0019] Figure 3 This is a partial side view cross-sectional structural diagram of the present invention.

[0020] Figure 4 for Figure 3 Enlarged view of point B.

[0021] Figure 5 for Figure 3 Enlarged view of point C.

[0022] Figure 6 This is a cross-sectional structural diagram showing the connection relationship between the support component, sealing component, pressure sensor, guide component, and gas circulation component of the present invention.

[0023] Figure 7 for Figure 6 Enlarged view of point D.

[0024] Figure 8 for Figure 7 Enlarged view of point E.

[0025] Figure 9 for Figure 8 Enlarged view of point F.

[0026] Figure 10 for Figure 7 Enlarged view of point G.

[0027] Figure 11 for Figure 10 Enlarged view of point H.

[0028] In the diagram: 1. Pressure testing platform; 2. Bidirectional air circuit assembly; 21. Bidirectional diaphragm air pump; 22. First connecting pipe; 23. Second connecting pipe; 24. Branch pipe; 25. Solenoid valve; 3. Support assembly; 31. Support frame; 32. First sealing gasket; 33. One-way valve; 4. Concentrator body; 41. Terminal block; 5. Sealing assembly; 51. L-shaped mounting plate; 52. Electric push rod; 53. Lifting frame; 54. Second sealing gasket; 55. Rubber pressure block; 6. Air pressure sensor; 7. Guide assembly; 71. Fixing block; 72. Slider; 73. Guide rod; 8. Drive assembly; 81. Dual-axis motor; 82. 83. First rotating shaft; 94. Second rotating shaft; 95. Pressure detection assembly; 96. First spring; 97. First sliding plate; 98. Second sliding plate; 99. Pressure sensor; 90. Inclined plate; 91. First rotating roller; 10. Connecting assembly; 101. Fixed cylinder; 102. Second spring; 103. Conductive probe; 20. Gas circulation assembly; 201. Fan blade; 202. First L-shaped exhaust pipe; 203. Bellows; 204. Second L-shaped exhaust pipe; 30. Ozone sensor; 40. Dynamic compensation assembly; 401. Threaded rod; 402. Threaded seat; 403. Second rotating roller; 404. Inclined block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To address the technical problem of missed detection of potential insulation defects during the withstand voltage test of concentrators, where early insulation hazards such as micro-flashovers and localized weak discharges are not easily detected by traditional monitoring modules, such as... Figures 1-11 As shown, the following preferred technical solutions are provided: like Figure 1 As shown, a pressure withstand testing device for a concentrator includes a pressure withstand testing platform 1. The platform provides a stable testing base for the concentrator's pressure withstand testing and can also support and fix various components. A controller is installed on one side of the platform, controlling various electrical components. The controller is existing technology and is not shown in the figure. Two bidirectional air path assemblies 2 are installed on one side of the platform. Several support assemblies 3 are installed inside the platform, and a concentrator body 4 is installed within each support assembly 3. A terminal block 41 is fixedly connected to the bottom of the concentrator body 4. The support assemblies 3 provide stable support and positioning for the concentrator body 4, while also providing installation space for internal functional components. Two sets of sealing assemblies 5 are installed inside the platform, corresponding to the positions of the support assemblies 3. The sealing assemblies 5 descend to cover and seal the concentrator body 4, forming a sealed pressure withstand testing chamber in conjunction with the support assemblies 3. The bidirectional air path assemblies 2 can perform inflation, replenishment, extraction, and exhaust operations within the sealed chamber, maintaining a slightly positive pressure environment within the chamber. Figure 6 As shown, both sets of sealing components 5 are equipped with pressure sensors 6. The pressure sensors 6 can monitor the gas pressure in the sealing cavity in real time and provide detection data for micro-positive pressure stabilization control.

[0031] like Figure 3 As shown, guide components 7 are provided on both sides of the support component 3. The guide components 7 are fixedly connected to the sealing component 5. The guide components 7 can guide the lifting and lowering movement of the sealing component 5, ensuring that the sealing component 5 is accurately aligned. Figure 7 As shown, the support component 3 contains a drive component 8, such as... Figure 4As shown, a pressure detection component 9 is slidably disposed within the support component 3. A connecting component 10 is disposed on the top of the pressure detection component 9. The connecting component 10 is electrically connected to the pressure resistance testing platform 1 and to the terminal block 41. The pressure detection component 9 can monitor the clamping pressure between the connecting component 10 and the terminal block 41 in real time. The connecting component 10 can achieve an electrical connection by clamping it to the terminal block 41. Figure 6 As shown, a gas circulation component 20 is provided at one end of the driving component 8. The gas circulation component 20 can drive the directional circulation of gas in the sealed cavity, delivering the ozone generated by the weak discharge to the detection position, such as... Figure 10 and Figure 11 As shown, an ozone sensor 30 is installed inside the gas circulation assembly 20. The ozone sensor 30 is a high-precision ppb-level electrochemical ozone detection sensor, which can detect the ozone concentration in the circulating gas in real time and determine whether there is a weak discharge in the concentrator by the ozone concentration.

[0032] In use, the concentrator body 4 to be tested is placed inside the support assembly 3, and the connecting assembly 10 is connected to the terminal block 41, so that the top of the connecting assembly 10 and the bottom of the terminal block 41 are tightly pressed together to complete a stable electrical connection. Then, the controller controls the sealing assembly 5 to descend, so that the sealing assembly 5 presses against the top of the support assembly 3, covering the concentrator body 4 in the sealed cavity. Then, the controller causes the bidirectional air circuit assembly 2 to pump dry air into the sealed cavity, and the air pressure sensor 6 detects in real time to maintain a constant micro-positive pressure in the sealed cavity. Then, the controller causes the withstand voltage test bench 1 to output a standard power frequency withstand voltage and apply it to the concentrator body 4 through the connecting assembly 10, thereby realizing the withstand voltage test of the concentrator body 4.

[0033] During the withstand voltage test, the air supply structure inside the gas circulation component 20 is rotated by driving component 8 at one end, forming a low-speed, stable directional airflow. This causes the gas in the sealed cavity to form a directional closed-loop circulation from bottom to top, which can quickly deliver the ozone generated by the weak discharge to the detection position of the ozone sensor 30. When micro-flashover or local weak discharge occurs in the insulation structure inside the concentrator body 4 and the connection part of the terminal block 41, the ozone sensor 30 can detect the ozone concentration change in real time and accurately identify early insulation defects. Compared with the existing technology of detecting the weak discharge electrical signal of the concentrator through a partial discharge detector, this method can effectively avoid the influence of electromagnetic interference on the detection signal, improve the detection sensitivity of micro-flashover and early weak discharge, reduce the probability of missed detection and false judgment of insulation defects, improve the accuracy and reliability of the concentrator withstand voltage test, and reduce the cost of use. The device has a simplified structure, is easy to maintain, and is suitable for the long-term use needs of batch automated testing of concentrators.

[0034] like Figure 9As shown, a dynamic compensation component 40 is rolled inside the support component 3. The dynamic compensation component 40 is connected to the other end of the drive component 8. The dynamic compensation component 40 can perform a small height compensation by driving the connecting component 10 through the drive component 8 based on the pressure signal of the pressure detection component 9, thereby eliminating the problem of insufficient clamping force caused by wear of the connecting component 10.

[0035] During the long-term calibration of the concentrator body 4, the top of the connecting component 10 is prone to wear due to long-term pressure friction with the terminal block 41 and high-frequency insertion and removal. This causes the top of the connecting component 10 to decrease in height when the bottom of the sealing component 5 presses against the top of the support component 3, making it impossible to achieve a tight seal with the terminal block 41. Consequently, the pressure detection component 9 reading falls below the preset pressure threshold. At this point, the controller causes the other end of the drive component 8 to drive the dynamic compensation component 40 to make a slight upward adjustment, pushing the pressure detection component 9 and the connecting component 10 upward synchronously, so that the pressure detection component 9... The pressure value recovers to the preset standard clamping pressure range, which can ensure that the connecting component 10 and the terminal block 41 always maintain a stable clamping force and good electrical conductivity, avoid arcing caused by poor contact, prevent interference with the withstand voltage test results and the accuracy of ozone detection. Compared with the existing method of manually disassembling and adjusting the height of the connecting component 10 or directly replacing the connecting component 10, it can realize automatic dynamic compensation of clamping force without manual intervention, save maintenance time, extend the service life of the connecting component 10, ensure the continuity and stability of batch automated testing of the concentrator, and further reduce the operation and maintenance cost of the device.

[0036] like Figure 2 and Figure 4 As shown, the bidirectional air circuit assembly 2 includes a bidirectional diaphragm air pump 21 installed on one side of the pressure resistance test bench 1. One end of the bidirectional diaphragm air pump 21 is connected to a first connecting pipe 22. A drying filter device is installed on the first connecting pipe 22 to dry the drawn-in air. At the same time, an ozone decomposition filter element is installed inside the first connecting pipe 22, and the end is open to the outside. This allows the ozone-containing gas drawn from the sealed cavity to be decomposed, purified, and discharged to the outside, avoiding ozone residue from polluting the test environment and affecting the accuracy of subsequent verification. The other end of the bidirectional diaphragm air pump 21 is connected to a second connecting pipe 23. Several branch pipes 24 are connected to one side of the second connecting pipe 23, and each of the several branch pipes 24 is equipped with a solenoid valve 25.

[0037] like Figure 2 , Figure 4 and Figures 6-11 As shown, the support assembly 3 includes a support frame 31 fixedly connected to the pressure testing bench 1, a first sealing gasket 32 ​​fixedly connected to the top of the support frame 31, a branch pipe 24 connected to the support frame 31, and a one-way valve 33 connected to one side of the support frame 31.

[0038] like Figure 3 , Figure 5 and Figure 6 As shown, the sealing assembly 5 includes an L-shaped mounting plate 51 fixedly connected to the pressure testing platform 1. Several electric push rods 52 are installed inside the L-shaped mounting plate 51. The movable ends of the electric push rods 52 are all fixedly connected to a lifting frame 53. A pressure sensor 6 is installed inside the lifting frame 53. A second sealing gasket 54 is fixedly connected to the bottom of the lifting frame 53. By setting the first sealing gasket 32 ​​and the second sealing gasket 54, the sealing effect at the joint between the support frame 31 and the lifting frame 53 can be improved, preventing air leakage in the sealing cavity and maintaining a stable micro-positive pressure. A rubber pressure block 55 is fixedly connected inside the lifting frame 53. The rubber pressure block 55 can flexibly press the concentrator body 4 to achieve positioning and fixation, while also providing buffer protection to avoid damaging the concentrator body 4.

[0039] like Figure 6 As shown, the guide assembly 7 includes several fixed blocks 71 that are relatively fixedly connected to both sides of the support frame 31. A guide rod 73 is fixedly connected inside the fixed block 71. A slider 72 is slidably connected to the outer wall of the guide rod 73. The slider 72 is fixedly connected to the lifting frame 53. When the electric push rod 52 drives the lifting frame 53 to rise and fall, the slider 72 slides on the outer wall of the guide rod 73, which can accurately guide the lifting frame 53 and ensure smooth lifting.

[0040] like Figure 10 and Figure 11 As shown, the drive assembly 8 includes a dual-axis motor 81 installed in the support frame 31. The dual-axis motor 81 is an independently controlled dual-axis geared motor that can control the rotation of the two output shafts separately. The dual-axis motor 81 has a self-locking function. One output end of the dual-axis motor 81 is fixedly connected to a first rotating shaft 82, and the other output end of the dual-axis motor 81 is fixedly connected to a second rotating shaft 83.

[0041] like Figure 9 and Figure 10 As shown, the pressure detection component 9 includes several first springs 91 that are relatively fixedly connected to the support frame 31. The bottom end of the first spring 91 is fixedly connected to a first slide plate 92. The first slide plate 92 is slidably connected to the inner wall of the support frame 31. The inner wall of the support frame 31 is slidably connected to a second slide plate 93. A pressure sensor 94 is installed in the second slide plate 93, and the top of the pressure sensor 94 is fixedly connected to the first slide plate 92. Several inclined plates 95 are fixedly connected to the bottom of the second slide plate 93. A first rotating roller 96 is rotatably connected to each of the several inclined plates 95.

[0042] like Figures 7-9As shown, the connecting assembly 10 includes several fixed cylinders 101 fixedly connected to the top of the first slide plate 92. A second spring 102 is fixedly connected inside the fixed cylinder 101. A conductive probe 103 is fixedly connected to the other end of the second spring 102. The conductive probe 103 is connected to the terminal block 41 and electrically connected to the pressure test station 1. The pressure sensor 94 can collect the pressing pressure signal between the conductive probe 103 and the terminal block 41 in real time. During the initial calibration, the controller cooperates with the pressure sensor 94 to perform zero calibration and set the standard pressing pressure threshold.

[0043] like Figure 6 , Figure 7 and Figure 11 As shown, the gas circulation assembly 20 includes a fan blade 201 fixedly connected to one end of the second rotating shaft 83. A first L-shaped air outlet pipe 202 is connected to one side of the support frame 31. One end of the first L-shaped air outlet pipe 202 is connected to a corrugated pipe 203. The corrugated pipe 203 is a flexible telescopic corrugated pipe 203, which can adaptively expand and contract with the lifting frame 53 to ensure unobstructed airflow and prevent damage from being pulled. The other end of the corrugated pipe 203 is connected to a second L-shaped air outlet pipe 204, which is connected to the lifting frame 53. An ozone sensor 30 is installed inside the first L-shaped air outlet pipe 202. The air supply structure inside the gas circulation assembly 20 is the fan blade 201.

[0044] In use, the concentrator body 4 to be tested is placed inside the support frame 31. At the same time, several conductive probes 103 are connected to the terminal block 41. The conductive probes 103 compress the second spring 102, so that the top of the conductive probe 103 is tightly pressed against the bottom of the terminal block 41, completing a stable electrical connection. Then, the controller controls the electric push rod 52 to extend, so that the lifting frame 53 and the second sealing gasket 54 descend synchronously until the second sealing gasket 54 presses against the first sealing gasket 32 ​​on the top of the support frame 31, thereby covering the concentrator body 4 in the sealed cavity. Then, the controller opens the solenoid valve 25 and controls the bidirectional diaphragm air pump 21 to pump dry air through the first connecting pipe 22 and then through the second connecting pipe 23 into the sealed cavity. Through the real-time detection of the air pressure sensor 6, the sealed cavity is kept in a constant micro-positive pressure state. Then, the controller closes the solenoid valve 25 and makes the withstand voltage test bench 1 output a standard power frequency withstand voltage and apply it to the concentrator body 4 through the conductive probes 103, thereby realizing the withstand voltage test of the concentrator body 4.

[0045] During the withstand voltage test, the dual-axis motor 81 drives the second rotating shaft 83 and the fan blade 201 to rotate, forming a low-speed, stable directional airflow. This allows the gas at the bottom of the sealed cavity to enter the top of the sealed cavity through the first L-shaped outlet pipe 202, the bellows pipe 203, and the second L-shaped outlet pipe 204, forming a bottom-to-top directional closed-loop circulation. This can quickly deliver the ozone generated by the weak discharge to the detection position of the ozone sensor 30. When micro-flashover or localized weak discharge occurs in the internal insulation structure of the concentrator body 4 and the connection points of the terminal block 41, the ozone sensor 30 can quickly deliver the ozone generated by the weak discharge to the detection position of the ozone sensor 30. The oxygen sensor 30 can capture changes in ozone concentration in real time and accurately identify early insulation defects. Compared with the existing technology that uses a partial discharge detector to detect weak discharge signals of the concentrator, it can effectively avoid the influence of on-site electromagnetic interference on the detection signal, improve the detection sensitivity of micro-flashover and early weak discharge, reduce the probability of missed detection and false judgment of insulation defects, improve the accuracy and reliability of the concentrator withstand voltage test, and at the same time reduce the cost of use. The device has a simple structure, is easy to maintain, and is suitable for the long-term use needs of batch automated testing of concentrators.

[0046] After the test is completed, the controller opens the solenoid valve 25 and simultaneously activates the bidirectional diaphragm air pump 21, creating negative pressure in the sealed cavity until the air pressure in the sealed cavity overcomes the opening pressure of the one-way valve 33. This allows outside air to enter the second connecting pipe 23 through the one-way valve 33, the sealed cavity, the branch pipe 24, and the solenoid valve 25, and then be discharged outdoors by the bidirectional diaphragm air pump 21 through the first connecting pipe 22. This process quickly extracts residual ozone and test exhaust gas from the sealed cavity, purifies it through the ozone decomposition filter, and then discharges it outdoors, clearing the internal environment of the sealed cavity and preventing residual gas from interfering with the next test, thus ensuring the consistency and accuracy of the test environment each time.

[0047] To address the technical problem of wear and tear on the conductive probe 103 caused by prolonged use, which affects detection, such as... Figure 9 and Figure 10 As shown, the following preferred technical solutions are provided: like Figure 10 As shown, the dynamic compensation component 40 includes a threaded rod 401 fixedly connected to one end of the first rotating shaft 82. A threaded seat 402 is threadedly connected to the outer wall of the threaded rod 401. Several second rotating rollers 403 are rotatably connected to the bottom of the threaded seat 402. Several inclined blocks 404 are fixedly connected to the top of the threaded seat 402. The first rotating roller 96 is in rolling connection with the inclined blocks 404.

[0048] During the long-term calibration of the concentrator body 4, the top of the conductive probe 103 is prone to wear due to long-term pressure friction with the terminal block 41 and high-frequency insertion and removal. This causes the top height of the conductive probe 103 to decrease when the second sealing gasket 54 at the bottom of the lifting frame 53 presses against the first sealing gasket 32 ​​at the top of the support frame 31, making it impossible to achieve a tight seal with the terminal block 41. As a result, the value of the pressure sensor 94 is lower than the preset pressure threshold. At this time, the controller drives the first rotating shaft 82 to rotate via the dual-axis motor 81, which in turn drives the threaded rod 401 to rotate synchronously. Through the threaded connection between the threaded seat 402 and the threaded rod 401, the threaded seat 402 rolls within the support frame 31 via the second rotating roller 403. This causes the threaded seat 402 to drive several inclined blocks 404 to move synchronously, thus causing the inclined blocks to... The inclined plane of 404 pushes the first rotating roller 96, inclined plate 95, second sliding plate 93 and first sliding plate 92 to move upward synchronously, pushing the fixed cylinder 101 and conductive probe 103 to make a slight upward adjustment, so that the value of pressure sensor 94 returns to the preset standard clamping pressure range. This ensures that the conductive probe 103 and terminal block 41 always maintain a stable clamping force and good electrical conductivity, avoids arcing due to poor contact, and prevents interference with withstand voltage test results and ozone detection accuracy. Compared with the existing method of manually disassembling and adjusting the height of conductive probe 103 periodically or directly replacing conductive probe 103, it can realize automatic dynamic compensation of clamping force without manual intervention, save maintenance time, extend the service life of conductive probe 103, ensure the continuity and stability of batch automated testing of concentrators, and further reduce the operation and maintenance cost of the device.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A withstand voltage testing device for a concentrator, comprising a withstand voltage testing platform (1), characterized in that: Two bidirectional air path assemblies (2) are installed on one side of the pressure resistance test bench (1). Several support assemblies (3) are installed inside the pressure resistance test bench (1). A concentrator body (4) is installed inside the support assembly (3). A terminal block (41) is fixedly connected to the bottom of the concentrator body (4). Two sets of sealing assemblies (5) are installed inside the pressure resistance test bench (1). The two sets of sealing assemblies (5) correspond to the positions of several support assemblies (3). A pressure sensor (6) is installed inside each of the two sets of sealing assemblies (5). Guide assemblies (7) are installed on both sides of the support assembly (3). The guide assemblies (7) are fixed to the sealing assemblies (5). The support component (3) is equipped with a drive component (8), the support component (3) is equipped with a pressure detection component (9), the pressure detection component (9) is equipped with a connection component (10) on top, the connection component (10) is electrically connected to the pressure test bench (1), the connection component (10) is connected to the terminal block (41), the drive component (8) is equipped with a gas circulation component (20) at one end, the gas circulation component (20) is equipped with an ozone sensor (30), the support component (3) is equipped with a dynamic compensation component (40) that rolls inside, and the dynamic compensation component (40) is connected to the other end of the drive component (8).

2. The withstand voltage testing device for a concentrator according to claim 1, characterized in that: The bidirectional air circuit assembly (2) includes a bidirectional diaphragm air pump (21) installed on one side of the pressure test bench (1). One end of the bidirectional diaphragm air pump (21) is connected to a first connecting pipe (22), and the other end of the bidirectional diaphragm air pump (21) is connected to a second connecting pipe (23). One side of the second connecting pipe (23) is connected to several branch pipes (24), and each of the several branch pipes (24) is equipped with a solenoid valve (25).

3. The withstand voltage testing device for a concentrator according to claim 2, characterized in that: The support assembly (3) includes a support frame (31) fixedly connected to the pressure test bench (1), a first sealing gasket (32) fixedly connected to the top of the support frame (31), a branch pipe (24) connected to the support frame (31), and a one-way valve (33) connected to one side of the support frame (31).

4. The withstand voltage testing device for a concentrator according to claim 3, characterized in that: The sealing assembly (5) includes an L-shaped mounting plate (51) fixedly connected to the pressure testing platform (1). Several electric push rods (52) are installed in the L-shaped mounting plate (51). The movable ends of the electric push rods (52) are fixedly connected to a lifting frame (53). A pressure sensor (6) is installed in the lifting frame (53). A second sealing gasket (54) is fixedly connected to the bottom of the lifting frame (53). A rubber pressure block (55) is fixedly connected in the lifting frame (53).

5. The withstand voltage testing device for a concentrator according to claim 4, characterized in that: The guide assembly (7) includes several fixed blocks (71) that are fixedly connected to both sides of the support frame (31). A guide rod (73) is fixedly connected inside the fixed block (71). A slider (72) is slidably connected to the outer wall of the guide rod (73). The slider (72) is fixedly connected to the lifting frame (53).

6. The withstand voltage testing device for a concentrator according to claim 5, characterized in that: The drive assembly (8) includes a dual-axis motor (81) installed in the support frame (31), one of the output ends of the dual-axis motor (81) is fixedly connected to a first rotating shaft (82), and the other output end of the dual-axis motor (81) is fixedly connected to a second rotating shaft (83).

7. The withstand voltage testing device for a concentrator according to claim 6, characterized in that: The pressure detection component (9) includes several first springs (91) that are fixedly connected to the support frame (31). The bottom end of the first spring (91) is fixedly connected to a first slide plate (92). The first slide plate (92) is slidably connected to the inner wall of the support frame (31). The inner wall of the support frame (31) is slidably connected to a second slide plate (93). A pressure sensor (94) is installed in the second slide plate (93). The top of the pressure sensor (94) is fixedly connected to the first slide plate (92). Several inclined plates (95) are fixedly connected to the bottom of the second slide plate (93). A first rotating roller (96) is rotatably connected to each of the several inclined plates (95).

8. The withstand voltage testing device for a concentrator according to claim 7, characterized in that: The connection assembly (10) includes several fixed cylinders (101) fixedly connected to the top of the first slide plate (92). A second spring (102) is fixedly connected inside the fixed cylinder (101). A conductive probe (103) is fixedly connected to the other end of the second spring (102). The conductive probe (103) is connected to the terminal block (41) and electrically connected to the withstand voltage test station (1).

9. The withstand voltage testing device for a concentrator according to claim 6, characterized in that: The gas circulation assembly (20) includes a fan blade (201) fixedly connected to one end of the second rotating shaft (83), a first L-shaped air outlet pipe (202) connected to one side of the support frame (31), a corrugated pipe (203) connected to one end of the first L-shaped air outlet pipe (202), and a second L-shaped air outlet pipe (204) connected to the other end of the corrugated pipe (203). The second L-shaped air outlet pipe (204) is connected to the lifting frame (53), and the ozone sensor (30) is installed inside the first L-shaped air outlet pipe (202).

10. A pressure withstand testing device for a concentrator according to claim 7, characterized in that: The dynamic compensation component (40) includes a threaded rod (401) fixedly connected to one end of the first rotating shaft (82), a threaded seat (402) threadedly connected to the outer wall of the threaded rod (401), a plurality of second rotating rollers (403) rotatably connected to the bottom of the threaded seat (402), a plurality of inclined blocks (404) fixedly connected to the top of the threaded seat (402), and the first rotating roller (96) and the inclined blocks (404) rollingly connected.

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