Insulation product withstand voltage test device and test method

Abstract

The invention discloses a withstand voltage test device and a withstand voltage test method for an insulating product, and relates to the technical field of withstand voltage tests. The insulation product voltage withstanding test device comprises a workbench, an insulation stand column, a transverse supporting rod, a conductive stand rod, a conductive pressing plate, a box body assembly and a separation support. And when the outer side wall of the heel of the tested insulating boot is pressed on the separation bracket, the steel ball can roll out through the skirt edge opening which is arranged obliquely downwards and falls into the inner cavity of the insulating boot to be tested, and the third conductive liquid at the bottom surface position of the tested insulating boot is adhered to the separation bracket and flows downwards along the separation bracket. The first conductive box body can conduct electricity when being crimped on the conductive pressing plate and is used for forming a loop required by a withstand voltage test of the insulating gloves; the second conductive box body can conduct electricity when being crimped on the conductive pressing plate, and is used for forming a loop required by a withstand voltage test of the insulating boot; and the two wires do not need to be assembled, disassembled and arranged when the two wires are replaced, so that the operation steps of a user are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical withstand voltage testing, and in particular to a withstand voltage testing device and a testing method for insulating products. Background Art

[0002] After long-term use, the insulation performance of insulation products will deteriorate due to aging, wear and other reasons. Therefore, it is usually necessary to conduct voltage withstand tests on insulation products regularly to evaluate their safety performance.

[0003] Insulating gloves and boots are commonly used insulation products. The voltage withstand tests for insulating gloves and boots are similar, so they are often integrated into one test device to improve operational convenience and reduce costs.

[0004] Traditional integrated voltage-withstand test equipment uses a plastic box to hold insulating products. A conductive metal plate is provided at the bottom of the inner cavity of the plastic box. The conductive metal plate is connected to the main body of the tester through wires inserted into the side walls of the plastic box to form a circuit. However, the size of the plastic box needs to be adapted to insulating gloves and insulating boots (for the installation of insulating clamps). Therefore, multiple plastic boxes of different sizes are usually provided. When replacing insulating products, the wires of the plastic box of the corresponding size are connected to the main body of the tester. That is, the wires need to be frequently loaded and unloaded, resulting in an increase in operating steps, reduced test efficiency, and accelerated bending and wear of the wires. Summary of the Invention

[0005] In order to overcome the problem in the above background technology that "corresponding wires need to be loaded and unloaded when replacing a plastic box, resulting in an increase in the number of operation steps", the present invention provides an insulation product withstand voltage test device and test method.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: A withstand voltage test device for insulating products, comprising a workbench, insulating columns, cross braces, conductive columns, a conductive pressure plate, and a box assembly; the workbench comprises an insulating top plate, the bottom ends of the insulating columns are connected to the insulating top plate, and the top ends are connected to the cross braces; the conductive columns are connected to the cross braces in a cross shape, and the conductive columns can be moved vertically and locked; the conductive pressure plate is mounted on the upper surface of the insulating top plate and is located below the conductive columns; the box assembly comprises a first conductive box for accommodating insulating gloves and a second conductive box for accommodating insulating boots; the first conductive box can be crimped On the conductive voltage plate; the second conductive box body can be crimped onto the conductive voltage plate; the bottom end of the conductive vertical rod can be immersed in the first conductive liquid in the inner cavity of the insulating glove, and the lower and middle part of the outer wall of the insulating glove can be immersed in the second conductive liquid in the inner cavity of the first conductive box body; the bottom end of the conductive vertical rod can contact the steel ball in the inner cavity of the insulating boot, and the bottom surface of the insulating boot can be crimped onto the sponge layer in the inner cavity of the second conductive box body, and the sponge layer is provided with a third conductive liquid; it also includes a separation bracket arranged at the side position of the insulating top plate and used to prevent the steel ball from contacting the third conductive liquid.

[0007] As a further optimization scheme of the present invention, when the outer side wall of the heel of the insulating boots after the test is pressed onto the separation bracket, the steel ball can roll out through the skirt opening arranged obliquely downward and fall into the inner cavity of the insulating boots to be tested, and the third conductive liquid at the bottom surface of the insulating boots after the test can be adsorbed by the separation bracket and flow downward along the separation bracket; the separation bracket is provided with an arc-shaped slot, and the outer side wall of the heel of the insulating boots after the test can be adapted to be engaged in the arc-shaped slot.

[0008] As a further optimization scheme of the present invention, the separation bracket includes a column, an arc-shaped support rod, a first water absorption sleeve and a second water absorption sleeve; the middle part of the arc-shaped support rod is fixedly connected to the top of the column in a Y shape, the first water absorption sleeve can be removably installed on the outer periphery of the arc-shaped support rod, and the second water absorption sleeve can be removably installed on the top of the outer periphery of the column; the bottom end of the first water absorption sleeve and the top end of the second water absorption sleeve are crimped to each other.

[0009] As a further optimization scheme of the present invention, the side wall of the first water absorption sleeve is provided with a first cutting slit that can be opened and closed along the axial direction, and the middle part of the first cutting slit is provided with an accommodating hole that can adapt to accommodate the top end of the column; the side wall of the second water absorption sleeve is provided with a second cutting slit that can be opened and closed along the axial direction.

[0010] As a further optimization solution of the present invention, the arc-shaped groove is arranged on the upper surface of the first water absorption sleeve.

[0011] As a further optimization solution of the present invention, the bottom end of the second water absorbing jacket is provided with an inverted conical surface.

[0012] As a further optimization scheme of the present invention, the separation bracket also includes a water-conducting connecting block with a parallelogram-shaped vertical cross-section; the first connecting side wall of the water-conducting connecting block is arranged obliquely upward and fixedly connected to the outer side wall of the workbench, and the second connecting side wall of the water-conducting connecting block is arranged obliquely downward and fixedly connected to the bottom side wall of the column.

[0013] As a further optimization solution of the present invention, a water collecting tank for containing the third conductive liquid is provided below the bottom end of the column.

[0014] As a further optimization solution of the present invention, the side wall of the workbench is provided with a box body bracket for supporting the first conductive box body and / or the second conductive box body; the first conductive box body can be inserted into the inner cavity of the second conductive box body.

[0015] A method for withstand voltage testing of insulating products, including a method for withstand voltage testing of insulating gloves and / or a method for withstand voltage testing of insulating boots using an insulating product withstand voltage testing device; the method for withstand voltage testing of insulating boots comprises the following steps: S1, moving the second conductive box containing the tested insulating boots to one end thereof located above the insulating top plate and close to the separation bracket; S2, taking the tested insulating boots out of the inner cavity of the second conductive box and rotating them into a V shape, so that the steel ball rolls to the end of the inner cavity of the tested insulating boots close to the heel; S3, placing the insulating boots to be tested in the inner cavity of the second conductive box and pressing them onto the sponge layer; S4, pressing the tested insulating boots into a V shape onto the separation bracket, and the shoe The outer side wall of the heel is pressed onto the first water-absorbing sleeve; S5, rotate the tested insulating boot until the skirt opening is set obliquely downward, and the steel ball rolls out through the skirt opening and falls into the inner cavity of the insulating boot to be tested; during the process, the third conductive liquid adhered to the bottom surface of the tested insulating boot first penetrates into the first water-absorbing sleeve and the second water-absorbing sleeve, and then adheres to the surface of the column and flows downward until it drips into the water collecting tank; S6, move the second conductive box body to be located below the conductive vertical pole; S7, move the conductive vertical pole downward until it is inserted into the inner cavity of the insulating boot to be tested, and the bottom end of the conductive vertical pole contacts the steel ball located in the inner cavity of the insulating boot to be tested; S8, supply power to the conductive vertical pole, and apply voltage to the insulating boot to be tested.

[0016] In summary, the present invention has at least one of the following advantages: (1) In the present invention, the first conductive box body can conduct electricity when it is crimped onto the conductive voltage plate, and is used to form a circuit required for the withstand voltage test of insulating gloves; the second conductive box body can conduct electricity when it is crimped onto the conductive voltage plate, and is used to form a circuit required for the withstand voltage test of insulating boots; when the first conductive box body and the second conductive box body are replaced with each other, there is no need to load, unload and lay the corresponding wires, thereby reducing the operating steps of the user and improving the test efficiency.

[0017] (2) When the steel balls are circulated between different insulating boots, the user presses the outer wall of the heel of the insulating boot that has been tested onto the separation bracket, and then rotates the insulating boot to pour out the steel balls inside and prevent the steel balls from contacting the third conductive liquid adhered to the sole, thereby preventing the steel balls from rusting and improving the accuracy of the insulating boot withstand voltage test.

[0018] (3) The first water absorption sleeve is made of sponge material or foam material, and thus has excellent elasticity, so that the first water absorption sleeve can adapt to the outer wall of the heel of the insulating boot, thereby improving the absorption rate and efficiency of the third conductive liquid, and at the same time avoiding the problem of the third conductive liquid passing through the gap between the first water absorption sleeve and the heel and flowing in the direction of the steel ball, that is, avoiding the problem of the third conductive liquid contacting the steel ball, and thus avoiding the rust of the steel ball.

[0019] (4) The third conductive liquid flows downward along the bottom surface of the shoe sole, and contacts the first water absorption sleeve when it flows to the outer wall of the heel. Then, the third conductive liquid flows downward along the bottom surface of the shoe sole, and contacts the first water absorption sleeve when it flows to the outer wall of the heel. Then, it flows downward along the first water absorption sleeve, the second water absorption sleeve and the separation bracket in sequence, so as to realize the diversion of the steel ball and the third conductive liquid, thereby realizing the diversion of the third conductive liquid.

[0020] (5) The end of the water-conducting connecting block away from the column is arranged obliquely upward. When the third conductive liquid flows through the intersection of the column and the water-conducting connecting block, the third conductive liquid will flow downward along the column under the action of its own gravity, rather than flowing obliquely upward along the water-conducting connecting block. This can prevent the third conductive liquid from flowing to the outer wall of the workbench (if the third conductive liquid flows downward on the outer wall of the workbench, it cannot be collected, which will cause the ground under the workbench to be slippery, thereby bringing the risk of leakage and users slipping).

[0021] (6) When the insulating boot is pressed against the first water-absorbing sleeve from top to bottom, the third conductive liquid in the pressure-bearing part of the upper surface of the first water-absorbing sleeve can be squeezed out; when the insulating boot is then removed from bottom to top, the pressure-bearing part of the upper surface of the first water-absorbing sleeve will rebound and expand, causing the water content of the pressure-bearing part to decrease. When the next insulating boot is pressed against the pressure-bearing part from top to bottom, the problem of splashing of the third conductive liquid will not occur (when the third conductive liquid splashes, it will enter the inner cavity of the insulating boot to be tested and eventually come into contact with the steel ball, causing rust).

[0022] (7) The third conductive liquid flowing out of the groove on the bottom surface of the sole can also be absorbed and guided by the present invention to avoid contact with the steel balls; compared with the traditional method of wiping with a rag, it has better functional reliability.

[0023] (8) The user can press the insulating boot onto the separation bracket with one hand to pour out the steel balls inside, while the method of wiping it dry with a rag requires the user to use both hands to operate. Therefore, the present invention has higher operating convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present application is further described below with reference to the accompanying drawings: Figure 1 It is a front view schematic diagram of the overall structure of the present invention; Figure 2 It is a front view schematic diagram of the first conductive box body and the second conductive box body being crimped to the conductive plate; Figure 3 It is a cross-sectional top view of the cross brace structure; Figure 4 This is a front view schematic diagram of the insulating gloves in the voltage test state; Figure 5 This is a side view schematic diagram of the insulating gloves in the voltage test state; Figure 6 This is a top view schematic diagram of the insulating gloves under voltage test; Figure 7 This is a front view schematic diagram of the insulating boots in the voltage test state; Figure 8 This is a side view schematic diagram of the insulating boots under voltage test; Figure 9 This is a top view schematic diagram of the insulating boots under voltage test; Figure 10 Schematic diagram of the state where the steel ball and the third conductive liquid fall into the inner cavity of the insulating boot to be tested; Figure 11 This is a front view of the insulating boots after the test is completed in a V-shaped setting; Figure 12 It is a front view schematic diagram of the steel ball and the third conductive liquid in the diversion state; Figure 13 It is a right side view schematic diagram of the separation bracket structure; Figure 14 Schematic diagram of the structure of the first water absorption jacket; Figure 15 Schematic diagram of the cross-sectional structure of the first water absorption jacket; Figure 16 Schematic diagram of the cross-sectional structure of the second water absorption jacket; Figure 17 It is a front view schematic diagram of the position and structure of the inverted cone surface; Figure 18This is a front view diagram of the location and structure of the water guide connection block; Figure 19 It is a schematic front view of the structure of the water guide connection block; Figure 20 It is a front view schematic diagram of the workbench structure; Figure 21 This is a schematic diagram of the wiring hole location and structure in a vertical section.

[0025] Description of reference numerals: In the figure, 1. Workbench; 11. Insulated top plate; 111. Cable routing hole; 112. Connecting wires; 12. Box support; 13. Water collecting tank; 14. Support legs; 15. Side panels; 16. Bottom plate; 17. Reinforced columns; 2. Insulation columns; 3. Cross brace; 31. Locking bolt; 32. Vertical insertion hole; 33. First screw hole; 4. Conductive pole; 5. Conductive plate; 51. Sealing strip; 6. Box assembly; 61. First conductive box; 611. First conductive liquid; 612. Second conductive liquid; 62. Second conductive box; 621. Sponge layer; 622. Steel ball; 63. Insulated clamp; 623. Third conductive liquid; 7. Insulation products; 71. Insulation gloves; 711. Cuffs; 72. Insulation boots; 721. Skirt hem; 722. Heels; 7201. Insulation boots after testing; 7202. Insulation boots to be tested; 8. Separation bracket; 801. Arc-shaped slot; 81. Post; 811. Limit bolt; 812. Second screw hole; 82. Arc-shaped support rod; 83. First water absorption sleeve; 831. First cutting slit; 832. Accommodating hole; 84. Second water absorption sleeve; 841. Second cutting slit; 842. Support socket; 843. Inverted conical surface; 85. Water guide connecting block; 851. First connecting side wall; 852. Second connecting side wall. DETAILED DESCRIPTION

[0026] Based on the above structural features of the present application, the implementation methods of the present application are further described: Reference Figure 1 、 Figure 2 、 Figure 5 and Figure 8 , the insulating product 7 includes insulating gloves 71 and insulating boots 72.

[0027] Reference Figures 1 and 2This embodiment provides a device for testing the withstand voltage of an insulating product, comprising a workbench 1, insulating columns 2, cross braces 3, conductive columns 4, conductive plates 5, and a box assembly 6. The workbench 1 is a hollow box with a voltmeter and an ammeter mounted within it. The voltmeter is used to detect the voltage applied to the insulating product 7, and the ammeter is used to detect the current applied to the insulating product 7.

[0028] Reference Figures 1 and 2 The workbench 1 includes an insulating top plate 11. The bottom ends of insulating uprights 2 are connected to the insulating top plate 11 (e.g., by bolts) and the top ends are connected to the cross brace 3 (e.g., by bolts). The insulating uprights 2 are vertically arranged insulating posts (which are conventional in the industry and will not be described in detail). Conductive uprights 4 are connected to the cross brace 3 in a cross-shaped configuration and can be moved vertically and locked.

[0029] Reference Figure 2 and Figure 3 The sidewalls of the cross brace 3 are mounted with locking bolts 31 for locking the conductive uprights 4 (keeping the conductive uprights 4 at a fixed height). A vertical insertion hole 32 is provided within the cross brace 3, into which the conductive uprights 4 are inserted and can move vertically. A first screw hole 33 is provided on the sidewalls of the cross brace 3, vertically connected to the insertion hole 32. The locking bolt 31 is threadedly mounted within the first screw hole 33. When the locking bolt 31 is rotated, it can move along the axial direction of the first bolt, moving closer to or further from the insertion hole 32, thereby pressing against the conductive uprights 4 to lock the height position of the conductive uprights 4, or disengage the locking bolt 31 from the conductive uprights 4 to release the lock.

[0030] Reference Figure 1 and Figure 2 The conductive voltage plate 5 is installed on the upper surface of the insulating top plate 11 and is located below the conductive vertical pole 4.

[0031] Reference Figure 1 、 Figures 4 to 9 The box assembly 6 includes a first conductive box 61 for accommodating insulating gloves 71 and a second conductive box 62 for accommodating insulating boots 72. The first conductive box 61 is a rectangular parallelepiped shell structure with an open top, a sealed bottom, and four sealed sides, thereby accommodating the insulating gloves 71; the second conductive box 62 is a rectangular parallelepiped shell structure with an open top, a sealed bottom, and four sealed sides, thereby accommodating the insulating boots 72.

[0032] Reference Figure 1 and Figure 2The bottom surface of the first conductive box body 61 can be pressed onto the conductive voltage plate 5 to achieve conductivity between the first conductive box body 61 and the conductive plate; the bottom surface of the second conductive box body 62 can be pressed onto the conductive voltage plate 5 to achieve conductivity between the second conductive box body 62 and the conductive plate; thereby being used to measure the voltage borne by the insulating product 7.

[0033] Reference Figure 1 and Figure 2 When the first conductive box 61 is crimped onto the conductive plate, the conductive rod 4 is located above the first conductive box 61. At this time, the conductive rod 4 moves downward and can be inserted into the inner cavity of the first conductive box 61 and the inner cavity of the insulating glove 71, thereby conducting electricity. When the second conductive box 62 is crimped onto the conductive plate, the conductive rod 4 is located above the second conductive box 62. At this time, the conductive rod 4 moves downward and can be inserted into the inner cavity of the second conductive box 62 and the inner cavity of the insulating wire, thereby conducting electricity.

[0034] Reference Figure 2 When the conductive pole 4 is locked, its height position is fixed and can be used to replace the insulating product 7 (combined with Figure 12 The specific steps are as follows: the user moves the conductive upright pole 4 upward until the bottom end of the conductive upright pole 4 is higher than the top end of the first conductive box body 61 / the top end of the second conductive box body 62; then tightens the locking bolt 31 so that the locking bolt 31 can press the conductive upright pole 4 to prevent the conductive upright pole 4 from sliding down freely, so that the user can free both hands to push / pull the first conductive box body 61 / the second conductive box body 62 to move until the first conductive box body 61 / the second conductive box body 62 is removed from under the cross brace 3, so that the top opening of the first conductive box body 61 / the second conductive box body 62 is completely exposed, so that the user can easily take out the insulating product 7 in the first conductive box body 61 / the second conductive box body 62, or put the insulating product 7 into the first conductive box body 61 / the second conductive box body 62).

[0035] Reference Figures 4 and 5 The bottom end of the conductive rod 4 can be immersed in the first conductive liquid 611 within the inner cavity of the insulating glove 71, and the lower middle portion of the outer wall of the insulating glove 71 can be immersed in the second conductive liquid 612 within the inner cavity of the first conductive box 61. Electrical conduction can occur between the bottom end of the conductive rod 4 and the first conductive liquid 611, forming an electrode structure that transfers charge to the inner surface of the insulating glove 71. Electrical conduction can also occur between the conductive plate 5, the first conductive box 61, and the second conductive liquid 612, forming an electrode structure that transfers charge to the outer surface of the insulating glove 71. This creates an electrical pressure difference between the inner and outer surfaces of the insulating glove 71.

[0036] Reference Figures 4 to 6, connect the side wall at the top cuff 711 of the insulating glove 71 to the top edge of the first conductive box body 61 through the insulating clamp 63, and then several insulating clamps 63 are used to limit the side wall at the cuff 711 of the insulating glove 71, preventing the side wall at the cuff 711 of the insulating glove 71 from contacting the conductive vertical pole 4, thereby reducing the test error.

[0037] Reference Figure 8 A plurality of steel balls 622 are provided in the inner cavity of the insulating boot 72, and the steel balls 622 are stacked to form a steel ball layer. The height of the steel ball layer is not less than 30 mm.

[0038] Reference Figures 7 and 8 The bottom end of the conductive rod 4 is inserted into the steel ball layer, and the bottom end of the conductive rod 4 can contact the steel ball 622 in the inner cavity of the insulating boot 72. The bottom end of the conductive rod 4 and the steel ball 622 can conduct electricity and together form an electrode structure, thereby transferring the charge to the inner surface of the insulating boot 72.

[0039] Reference Figures 7 and 8 A sponge layer 621 is provided at the bottom of the inner cavity of the second conductive box body 62 , and a third conductive liquid 623 is provided in the sponge layer 621 . The third conductive liquid 623 completely infiltrates the sponge layer 621 , thereby enabling the sponge layer 621 to conduct electricity.

[0040] Reference Figures 7 and 8 The bottom surface of the insulating boot 72 can be pressed onto the sponge layer 621 in the inner cavity of the second conductive box body 62, so that the conductive plate 5, the second conductive box body 62, the sponge layer 621 and the third conductive liquid 623 can conduct electricity and together form an electrode structure, thereby transferring the charge to the outer surface of the insulating boot 72; then an electric pressure difference is formed between the inner surface and the outer surface of the insulating boot 72.

[0041] Reference Figures 7 to 9 The side wall at the top skirt opening 721 of the insulating boot 72 is connected to the top edge of the second conductive box body 62 through the insulating clamp 63. Then, several insulating clamps 63 are used to limit the side wall at the skirt opening 721 of the insulating boot 72, thereby preventing the side wall at the skirt opening 721 of the insulating boot 72 from contacting the conductive vertical pole 4, thereby reducing the test error.

[0042] Reference Figure 10When it is necessary to perform a withstand voltage test on multiple insulating boots 72 in sequence, the steel balls 622 will be reused, that is, the steel balls 622 in the insulating boot 7201 that has completed the test will be dumped into the insulating boot 7202 to be tested; in order to make the steel balls 622 roll out of the insulating boot 7201 that has completed the test, the skirt opening 721 needs to be tilted downward. At this time, the (drop-shaped) third conductive liquid 623 (the third conductive liquid 623 comes from the sponge layer 621; when the insulating boot 72 is pressed on the sponge layer 621 and undergoes a withstand voltage test, the third conductive liquid 623 will adhere to the bottom surface of the sole of the insulating boot 7201 that has completed the test) will flow along the bottom of the outer surface of the insulating boot 7201 that has completed the test toward the skirt opening 721, causing the steel balls 622 and the third conductive liquid 623 to fall into the inner cavity of the insulating boot 7202 to be tested at the same time, thereby causing the steel balls 622 and the third conductive liquid 623 to come into contact with each other. After the steel ball 622 comes into contact with the third conductive liquid 623, the surface of the steel ball 622 is prone to rust and form rust. Since rust has a low conductivity, the overall conductivity of the steel ball 622 decreases and the resistance increases, and the voltage shared by the steel ball 622 increases, resulting in a decrease in the calibration accuracy of the traditional test equipment, and further causing the problem of reduced accuracy of the withstand voltage test (in some traditional technologies, after the test of the insulating boots 72 is completed, the user uses a rag to wipe the bottom surface of the sole of the insulating boots 72; but the bottom surface of the sole is usually provided with grooves to increase friction during walking, and it is difficult for the rag to reach into the groove and absorb the third conductive liquid 623 in the groove. Therefore, when the sole is placed upright to pour out the steel ball 622 in the insulating boots 72, the third conductive liquid 623 stored in the groove will still flow downward first, then toward the skirt opening 721 and finally come into contact with the steel ball 622); to avoid such problems, combined with Figure 11 and Figure 12 The insulation product withstand voltage test device further includes a separation bracket 8 disposed on a side of the insulation top plate 11 and used to prevent the steel ball 622 from contacting the third conductive liquid 623 .

[0043] Reference Figure 12 When the outer wall of the heel 722 of the insulating boot 7201 after the test is pressed against the separation bracket 8, the steel ball 622 can roll out through the skirt opening 721 set obliquely downward and fall into the inner cavity of the insulating boot 7202 to be tested. The third conductive liquid 623 at the bottom surface of the insulating boot 7201 after the test adheres to the separation bracket 8 and flows downward along the separation bracket 8; thereby realizing the diversion of the steel ball 622 and the third conductive liquid 623, avoiding the problem of the steel ball 622 and the third conductive liquid 623 approaching and contacting each other, and further avoiding the problem of the steel ball 622 rusting, so as to improve the test accuracy.

[0044] Reference Figure 12 and Figure 13The separation bracket 8 is provided with an arcuate slot 801. The outer wall of the heel 722 of the tested insulating boot 7201 fits snugly within the arcuate slot 801, thereby increasing the contact area between the separation bracket 8 and the tested insulating boot 7201. This prevents the third conductive liquid 623 from passing through the gap between the arcuate slot 801 and the heel 722 and flowing toward the steel ball 622, thereby improving the efficiency of diverting the third conductive liquid 623. During the withstand voltage test, the bottom surface of the sole of the insulating boot 72 contacts the sponge layer 621, adhering to the third conductive liquid 623. Therefore, when the sole of the tested insulating boot 7201 is placed upright, the third conductive liquid 623 flows downward along the bottom surface of the sole. When it reaches the outer wall of the heel 722, it soaks the separation bracket 8 and then flows downward along the separation bracket 8, rather than continuing to flow diagonally downward (toward the skirt opening 721) along the insulating boot 72.

[0045] Reference Figures 12 and 13 The separation bracket 8 includes a column 81, an arc-shaped support rod 82, a first water absorption sleeve 83, and a second water absorption sleeve 84. The middle portion of the arc-shaped support rod 82 is fixedly connected to the top of the column 81 in a Y-shape (e.g., by bolts, welding, or an integral connection). The first water absorption sleeve 83 is removably mounted on the outer periphery of the arc-shaped support rod 82, and the second water absorption sleeve 84 is removably mounted on the outer periphery of the column 81. The bottom end of the first water absorption sleeve 83 and the top end of the second water absorption sleeve 84 are press-fitted together. The third conductive liquid 623 flows downward along the bottom surface of the shoe sole, contacts the first water absorption sleeve 83 when it reaches the outer wall of the heel 722, and then flows downward along the first water absorption sleeve 83, the second water absorption sleeve 84, and the separation bracket 8. After the user removes the first water absorbing sleeve 83 and / or the second water absorbing sleeve 84, they can be cleaned (the first water absorbing sleeve 83 and / or the second water absorbing sleeve 84 will absorb dust if exposed to the air for a long time, thereby reducing the water absorption capacity, that is, reducing the ability to absorb the third conductive liquid 623; cleaning can remove dust and avoid such problems), and dried (the first water absorbing sleeve 83 and / or the second water absorbing sleeve 84 that is soaked for a long time is prone to mold, and when the mold grows too much, it will block the holes of the first water absorbing sleeve 83 and / or the second water absorbing sleeve 84, thereby reducing the water absorption capacity). Decline, that is, the ability to absorb the third conductive liquid 623 decreases; drying can remove moisture and avoid such problems. It is used for long-term shutdown, maintenance or storage of the present invention), replacement (the first water absorption sleeve 83 is damaged by accidental impact or multiple crimpings by the insulating boot 72. After long-term use, the first water absorption sleeve 83 and / or the second water absorption sleeve 84 will age, resulting in a decrease in water absorption capacity and elasticity, that is, a decrease in the ability to absorb the third conductive liquid 623, and a new first water absorption sleeve 83 and / or the second water absorption sleeve 84 needs to be replaced) and other operations.

[0046] Reference Figures 12 and 13The column 81 and the arc-shaped support rod 82 are used to support the insulating boots 7201 that have completed the test, the first water absorption sleeve 83 and the second water absorption sleeve 84, and then support the insulating boots 7201 that have completed the test above the insulating boots 7202 to be tested. When the insulating boots 7201 that have completed the test rotate, the fallen steel balls 622 can fall into the inner cavity of the insulating boots 7202 to be tested; the first water absorption sleeve 83 and the second water absorption sleeve 84 are used to adsorb the third conductive liquid 623.

[0047] Reference Figures 12 to 16 The first water absorption sleeve 83 has a C-shaped cross-section to accommodate the curved support rod 82; the second water absorption sleeve 84 has a C-shaped cross-section to accommodate the column 81. The sidewall of the first water absorption sleeve 83 is provided with a first slit 831 that can be opened and closed axially. A receiving hole 832 is located in the middle of the first slit 831 to accommodate the top of the column 81. The sidewall of the second water absorption sleeve 84 is provided with a second slit 841 that can be opened and closed axially. Both the first water absorption sleeve 83 and the second water absorption sleeve 84 are made of sponge or foam materials, thus having excellent elasticity. This allows the first water absorption sleeve 83 to conform to the outer wall of the heel 722 of the tested insulating boot 7201, thereby improving the absorption rate and efficiency of the third conductive liquid 623 and preventing the third conductive liquid 623 from passing through the gap between the first water absorption sleeve 83 and the outer wall of the heel 722 of the tested insulating boot 7201 and flowing toward the steel ball 622. The user can pry open the first cutting seam 831 and cover the first water absorption sleeve 83 around the outer periphery of the arc-shaped support rod 82, and then the user releases his hand, and the first water absorption sleeve 83 automatically rebounds to the first cutting seam 831 to close, thereby achieving a snap-fit ​​installation; the user can pry open the second cutting seam 841 and cover the second water absorption sleeve 84 around the outer periphery of the column 81, and then the user releases his hand, and the second water absorption sleeve 84 automatically rebounds to the second cutting seam 841 to close, thereby achieving a snap-fit ​​installation.

[0048] Reference Figure 13 and Figure 16, a limit bolt 811 can be removably installed on the side wall of the column 81. A second screw hole 812 is provided on the side wall of the column 81 to fit the limit bolt 811, and the end of the limit bolt 811 is installed in the second screw hole 812 by threading. A support socket 842 is provided on the side wall of the second water absorption sleeve 84 away from the second cutting seam 841, and the support socket 842 is a through-hole structure; the middle part of the second screw hole 812 can be adapted to be inserted into the support socket 842, thereby applying an upward supporting force to the second water absorption sleeve 84, so that the bottom end of the first water absorption sleeve 83 and the top end of the second water absorption sleeve 84 are pressed against each other (and pressed tightly), thereby increasing the contact area between the first water absorption sleeve 83 and the second water absorption sleeve 84, so as to ensure that the third conductive liquid 623 can flow through the first water absorption sleeve 83 to the second water absorption sleeve 84 (the third conductive liquid 623 has a tendency to flow downward under its own gravity).

[0049] Compared to installing a limiting ring, the present invention adopts a limiting bolt 811 to support the second water absorbing sleeve 84 from bottom to top; because the limiting bolt 811 will not hinder the third conductive liquid 623 from flowing downward.

[0050] Reference Figure 13 and Figure 16 After removing the limiting bolt 811 from the side wall of the column 81, the user can pry open the second cut slit 841 and remove the second water absorption sleeve 84 from the side wall of the column 81. The user buckles the second water absorption sleeve 84 onto the outside of the column 81, then aligns the second screw hole 812 and the support socket 842 coaxially (i.e., mutually aligned). The limiting bolt 811 is then inserted into the support socket 842 and tightened into the second screw hole 812 to complete the installation of the second water absorption sleeve 84.

[0051] The arc-shaped slot 801 is arranged on the upper surface of the first water absorption sleeve 83, so the user can place the tested insulating boots 7201 from top to bottom in the arc-shaped slot 801 and press it on the top of the first water absorption sleeve 83, or take the tested insulating boots 7201 out of the arc-shaped slot 801 from bottom to top, which has the technical effect of convenient operation; at the same time, the tested insulating boots 7201 are pressed from top to bottom against the first water absorption sleeve 83, which can squeeze the third conductive liquid 623 in the first water absorption sleeve 83 downward, and cooperate with the speed of the third conductive liquid 623 flowing downward under its own weight, thereby improving the overall speed of the third conductive liquid 623 flowing downward.

[0052] At the same time, the insulating boot 7201 that has completed the test is pressed against the first water absorption sleeve 83 from top to bottom, which can squeeze out the third conductive liquid 623 in the pressure part of the upper surface of the first water absorption sleeve 83 (the squeezed third conductive liquid 623 flows downward along the outer wall of the first water absorption sleeve 83 to enter the second water absorption sleeve 84). When the insulating boot 7201 that has completed the test is then removed from bottom to top, the pressure part of the upper surface of the first water absorption sleeve 83 will rebound, causing the water content of the pressure part to decrease. When the next insulating boot 7201 that has completed the test is pressed against the pressure part of the first water absorption sleeve 83 from top to bottom, there will be no problem of splashing of the third conductive liquid 623 (the third conductive liquid 623 will splash into the inner cavity of the insulating boot 7202 to be tested, and eventually come into contact with the steel ball 622, causing rust).

[0053] Reference Figure 17 The bottom end of the second water absorption sleeve 84 is provided with an inverted conical surface 843. When the third conductive liquid 623 accumulates at the bottom of the second water absorption sleeve 84, it is guided by the inverted conical surface 843 to the outer wall of the column 81, and then flows downward along the outer wall of the column 81; finally, the third conductive liquid 623 drips at the bottom end of the column 81 and falls into the water collection tank 13, thereby preventing the third conductive liquid 623 from dripping too high and thus preventing the third conductive liquid 623 from splashing in the water collection tank 13 (a certain amount of third conductive liquid 623 is stored in the water collection tank 13. If the dripping height is too high, the instantaneous speed of the third conductive liquid 623 droplets when falling into the liquid surface will be too high, thereby causing the third conductive liquid 623 to splash; the splashing of the third conductive liquid 623 in the water collection tank 13 will make the workshop floor slippery, easily creating the risk of equipment leakage and the risk of users slipping).

[0054] Reference Figure 18 and Figure 19 The separation bracket 8 further includes a water guide connecting block 85 having a parallelogram-shaped vertical cross section. The water guide connecting block 85 is a quadrangular prism-shaped structure arranged horizontally. The first connecting side wall 851 of the water-conducting connecting block 85 is arranged obliquely upward and fixedly connected to the outer wall of the workbench 1 (for example, fixedly connected by bolts or welded), and the second connecting side wall 852 of the water-conducting connecting block 85 is arranged obliquely downward and fixedly connected to the bottom side wall of the column 81 (for example, fixedly connected by bolts or welded); therefore, the end of the water-conducting connecting block 85 away from the column 81 is arranged obliquely upward, and when the third conductive liquid 623 flows through the intersection of the column 81 and the water-conducting connecting block 85, the third conductive liquid 623 will flow downward along the column 81 under the action of its own gravity, rather than flowing obliquely upward along the water-conducting connecting block 85, thereby preventing the third conductive liquid 623 from flowing to the outer wall of the workbench 1 (the third conductive liquid 623 flows downward along the outer wall of the workbench 1 and cannot be collected, which will cause the ground under the workbench 1 to be slippery, thereby bringing the risk of electric leakage and users slipping).

[0055] Reference Figure 18 and Figure 19 There are at least two water-conducting connecting blocks 85, and they are arranged vertically between the workbench 1 and the column 81, so as to achieve stable support for the column 81 and avoid the problem of a single water-conducting connecting block 85 being subjected to a large torque (it is difficult for the column 81 to be set absolutely vertically, which will generate torque on the water-conducting connecting block 85).

[0056] Reference Figure 18 A water collecting tank 13 for accommodating the third conductive liquid 623 is provided below the bottom end of the column 81. The water collecting tank 13 is arranged in front of the workbench 1 to receive the dripping third conductive liquid 623. The workbench 1 and the water collecting tank 13 are both placed on the floor of the workshop.

[0057] Reference Figure 20 The workbench 1 also includes a leg 14, a side panel 15, a bottom panel 16 and a reinforcing column 17. The top of the leg 14 is fixedly connected to the outer edge of the bottom surface of the insulating top panel 11 (for example, by bolts), and the bottom of the leg 14 is fixedly connected to the outer edge of the top surface of the floor (for example, by bolts), thereby supporting the insulating top panel 11. The side panel 15 is arranged on the outside of the leg 14 and is fixedly connected to the outer wall of the leg 14 (for example, by bolts or welding), thereby protecting the circuit in the inner cavity of the workbench 1 and preventing splashing water from the outside from entering the inner cavity of the workbench 1 and damaging the circuit. The side panel 15 is provided with a rectangular hole, and the first connecting side wall 851 of the water-conducting connecting block 85 is placed in the rectangular hole and fixedly connected to the outer wall of the leg 14 (for example, by bolts or welding), thereby supporting the separation bracket 8. Reinforcement columns 17 are located directly below the conductive plate 5 and support the conductive plate 5, as well as the first conductive box 61, second conductive box 62, insulating gloves 71, insulating boots 72, first conductive liquid 611, second conductive liquid 612, and third conductive liquid 623 above the conductive plate 5, thereby preventing overload damage (such as bending or cracking) to the insulating top plate 11. The top of the reinforcement columns 17 are fixedly connected (e.g., by bolts) to the outer edge of the bottom surface of the insulating top plate 11, and the bottom of the reinforcement columns 17 are fixedly connected (e.g., by bolts) to the outer edge of the top surface of the floor. The insulating top plate 11 is made of a waterproof insulating material, such as ceramic or resin, to prevent leakage of the conductive plate 5 while maintaining excellent waterproof properties.

[0058] Reference Figure 1 、 Figure 2 and Figure 18The side walls of the workbench 1 are provided with a box support 12 for supporting the first conductive box 61 and / or the second conductive box 62. The side walls of the box support 12 are fixedly connected to the legs 14 and the side panels 15 via through-bolts. During non-operating hours, the box assembly 6 is placed on the box support 12 for storage. The first conductive box 61 can be inserted into the interior of the second conductive box 62, allowing the first and second conductive boxes 61, 62 to be stacked vertically on the box support 12, thereby reducing floor space and improving the overall storage convenience of the present invention.

[0059] Reference Figure 21 The insulating top plate 11 is provided with a wiring hole 111, into which the end of the connecting wire 112 connected to the conductive plate 5 is inserted for routing. An insulating sleeve (e.g., a rubber sleeve) is provided between the inner wall of the wiring hole 111 and the connecting wire 112. The conductive plate 5 and the insulating top plate 11 are sealed and fixed together by bolts and a sealing strip 51. Any first conductive liquid 611, second conductive liquid 612, or third conductive liquid 623 accidentally dripping onto the upper surface of the conductive plate 5 and / or the insulating top plate 11 cannot pass through the gap between the conductive plate 5 and the insulating top plate 11 and come into contact with the connecting wire 112, thereby improving the safety of the present invention.

[0060] The first conductive liquid 611 , the second conductive liquid 612 , and the third conductive liquid 623 are all water.

[0061] The present invention also includes an electrical cabinet and a transformer. The electrical cabinet is bolted to the interior of the workbench 1, and the transformer is installed on the workshop floor. The transformer is used to boost the voltage of the external power supply to the required voltage. Conductive poles 4 and the transformer are each connected to the electrical cabinet via wires. The conductive plate 5 is connected to the electrical cabinet via connecting wires 112. The electrical cabinet is connected to the external power supply and external controller (such as a computer or PLC programmable logic controller) via wires and signal lines, respectively. The electrical cabinet is connected to the workshop floor via a grounding wire. The external controller controls the operating status of the transformer, such as starting and stopping, through the electrical cabinet.

[0062] In the present invention, the insulating boots 72 include tested insulating boots 7201 and insulating boots to be tested 7202. In actual operation, multiple insulating boots 72 are usually required to undergo pressure resistance tests in sequence (and the steel balls 622 need to be circulated in sequence within different insulating boots 72). Therefore, based on a specific insulating boot 72, after completing the pressure resistance test, the insulating boot 72 is considered to be the tested insulating boot 7201. The next insulating boot 72 to undergo the pressure resistance test is the insulating boot to be tested 7202.

[0063] Reference Figure 4 and Figure 6 The size of the first conductive box body 61 is adapted to the size of the insulating gloves 71 to facilitate the installation of the corresponding insulating clamp 63; Figure 7 and Figure 9 The size of the second conductive box body 62 is adapted to the size of the insulating boot 72 to facilitate the installation of the corresponding insulating clamp 63.

[0064] A method for withstand voltage testing of insulating products, including a method for withstand voltage testing of insulating gloves 71 and / or a method for withstand voltage testing of insulating boots 72 using an insulating product withstand voltage testing device.

[0065] The insulating gloves 71 voltage withstand test method includes the following steps: A1. Place the insulating glove 71 with the cuff 711 facing upward in the inner cavity of the first conductive box 61 and secure it with the insulating clamp 63.

[0066] A2. Inject the second conductive liquid 612 into the inner cavity of the first conductive box 61 and inject the first conductive liquid 611 into the inner cavity of the insulating glove 71 until the liquid level of the first conductive liquid 611 is flush with the liquid level of the second conductive liquid 612.

[0067] A3. Move the first conductive box 61 to be located below the conductive upright 4.

[0068] A4. Move the conductive pole 4 downward until it is inserted into the inner cavity of the insulating glove 71 and the bottom end of the conductive pole 4 is immersed in the first conductive liquid 611; then tighten the locking bolt 31 to fix the height of the conductive pole 4.

[0069] A5. Power the conductive pole 4 and apply a test voltage to the insulating gloves 71 (for example, for low-voltage insulating gloves with a use cycle of half a year, the test voltage is 2.5 kV, the duration is 1 minute, and the leakage current is required to be no more than 2.5 mA; for high-voltage insulating gloves with a use cycle of half a year, the test voltage is 8 kV, the duration is 1 minute, and the leakage current is required to be no more than 9 mA).

[0070] The insulation boot 72 withstand voltage test method includes the following steps: S1. Move the second conductive box 62 containing the tested insulating boot 7201 to one end thereof located above the insulating top plate 11 and close to the separation bracket 8.

[0071] S2. Take out the tested insulating boot 7201 from the inner cavity of the second conductive box 62 and rotate it into a V shape, so that the steel ball 622 rolls to the end of the inner cavity of the tested insulating boot 7201 close to the heel 722.

[0072] S3. Place the insulating boot 7202 to be tested in the inner cavity of the second conductive box 62 and press it onto the sponge layer 621.

[0073] S4. Press the tested insulating boot 7201 onto the separation bracket 8 in a V shape, and press the outer side wall of the heel 722 onto the first water absorption sleeve 83.

[0074] S5. Rotate the insulating boot 7201 after the test until the skirt opening 721 is set obliquely downward, and the steel ball 622 rolls out through the skirt opening 721 and falls into the inner cavity of the insulating boot 7202 to be tested; during the process, the third conductive liquid 623 adhered to the bottom surface of the insulating boot 7201 after the test first penetrates into the first water absorption sleeve 83 and the second water absorption sleeve 84, and then adheres to the surface of the column 81 and flows downward until it drips into the water collecting tank 13.

[0075] S6. Move the second conductive box 62 to be located below the conductive upright pole 4.

[0076] S7. Move the conductive pole 4 downward until it is inserted into the inner cavity of the insulating boot 7202 to be tested, and the bottom end of the conductive pole 4 contacts the steel ball 622 located in the inner cavity of the insulating boot 7202 to be tested; then tighten the locking bolt 31 to fix the height of the conductive pole 4.

[0077] S8. Power the conductive pole 4 and apply a test voltage to the insulating boots 7202 to be tested (for example, for level 4 insulating boots 72 with a service life of half a year, the test voltage is 40 kV, the duration is 1 minute, and the leakage current is required to be no more than 24 mA).

[0078] The first conductive box body 61 , the second conductive box body 62 , and the conductive plate 5 are all made of ferrous metal materials (such as 45# steel) and thus have excellent electrical conductivity.

[0079] The present invention has a simple structure and reliable functions. When the first conductive box body 61 is crimped onto the conductive voltage plate 5, it can conduct electricity and is used to form a circuit required for the withstand voltage test of the insulating gloves 71; when the second conductive box body 62 is crimped onto the conductive voltage plate 5, it can conduct electricity and is used to form a circuit required for the withstand voltage test of the insulating boots 72; when the two are replaced with each other, there is no need to load, unload and lay the corresponding wires, thereby reducing the operating steps of the user and improving the test efficiency.

[0080] The user can press the insulating boot 72 onto the separation bracket 8 with one hand to pour out the steel balls 622 inside (the other hand can perform other operations), while the method of wiping it dry with a rag requires the user to use both hands (one hand holds the insulating boot 72 and the other hand holds the rag), so the present invention has higher operational convenience.

Claims

1. A withstand voltage test device for insulating products, characterized by: It comprises a workbench (1), an insulating column (2), a cross brace (3), a conductive column (4), a conductive voltage plate (5) and a box assembly (6); The workbench (1) includes an insulating top plate (11), the bottom end of the insulating column (2) is connected to the insulating top plate (11), and the top end is connected to the cross bar (3); the conductive vertical rod (4) is connected to the cross bar (3) in a cross shape, and the conductive vertical rod (4) can be moved vertically and locked; the conductive voltage plate (5) is installed on the upper surface of the insulating top plate (11) and is located below the conductive vertical rod (4); The box assembly (6) comprises a first conductive box (61) for accommodating insulating gloves (71) and a second conductive box (62) for accommodating insulating boots (72); the first conductive box (61) can be crimped onto the conductive voltage plate (5); the second conductive box (62) can be crimped onto the conductive voltage plate (5); The bottom end of the conductive upright (4) can be immersed in the first conductive liquid (611) in the inner cavity of the insulating glove (71), and the lower middle portion of the outer wall of the insulating glove (71) can be immersed in the second conductive liquid (612) in the inner cavity of the first conductive box (61); The bottom end of the conductive upright (4) can contact the steel ball (622) in the inner cavity of the insulating boot (72), and the bottom surface of the insulating boot (72) can be pressed onto the sponge layer (621) in the inner cavity of the second conductive box (62), and the sponge layer (621) is provided with a third conductive liquid (623); It also includes a separation bracket (8) arranged on the side of the insulating top plate (11) and used to prevent the steel ball (622) from contacting the third conductive liquid (623).

2. The insulation product withstand voltage test device according to claim 1, characterized in that: When the outer side wall of the heel (722) of the insulating boot (7201) after the test is pressed against the separation bracket (8), the steel ball (622) can roll out through the skirt opening (721) arranged obliquely downward and fall into the inner cavity of the insulating boot (7202) to be tested, and the third conductive liquid (623) at the bottom surface of the insulating boot (7201) after the test is completed can be adsorbed by the separation bracket (8) and flow downward along the separation bracket (8); The separation bracket (8) is provided with an arc-shaped slot (801), and the outer side wall of the heel (722) of the insulating boot (7201) after the test is completed can be adapted to be engaged in the arc-shaped slot (801).

3. The insulation product withstand voltage test device according to claim 2, characterized in that: The separation bracket (8) includes a column (81), an arc-shaped support rod (82), a first water absorption sleeve (83) and a second water absorption sleeve (84); the middle portion of the arc-shaped support rod (82) is fixedly connected to the top of the column (81) in a Y-shape, the first water absorption sleeve (83) is detachably mounted on the outer periphery of the arc-shaped support rod (82), and the second water absorption sleeve (84) is detachably mounted on the outer periphery of the column (81); the bottom end of the first water absorption sleeve (83) and the top end of the second water absorption sleeve (84) are press-fitted to each other.

4. The insulation product withstand voltage test device according to claim 3, characterized in that: The side wall of the first water absorption sleeve (83) is provided with a first cutting slit (831) that can be opened and closed along the axial direction, and the middle of the first cutting slit (831) is provided with an accommodating hole (832) that can adapt to accommodate the top end of the column (81); the side wall of the second water absorption sleeve (84) is provided with a second cutting slit (841) that can be opened and closed along the axial direction.

5. The insulation product withstand voltage test device according to claim 4, characterized in that: The arc-shaped slot (801) is arranged on the upper surface of the first water absorption sleeve (83).

6. The insulation product withstand voltage test device according to claim 5, characterized in that: The bottom end of the second water absorbing sleeve (84) is provided with an inverted conical surface (843).

7. The insulation product withstand voltage test device according to claim 6, characterized in that: The separation bracket (8) further comprises a water guide connecting block (85) having a parallelogram-shaped vertical cross-section; a first connecting side wall (851) of the water guide connecting block (85) is arranged obliquely upward and fixedly connected to the outer side wall of the workbench (1); and a second connecting side wall (852) of the water guide connecting block (85) is arranged obliquely downward and fixedly connected to the bottom side wall of the column (81).

8. The insulation product withstand voltage test device according to claim 7, characterized in that: A water collecting tank (13) for accommodating the third conductive liquid (623) is provided below the bottom end of the column (81).

9. The insulation product withstand voltage test device according to claim 8, characterized in that: The side wall of the workbench (1) is provided with a box body bracket (12) for supporting the first conductive box body (61) and / or the second conductive box body (62); the first conductive box body (61) can be plugged into the inner cavity of the second conductive box body (62).

10. A withstand voltage test method for an insulation product, characterized in that: A method for conducting a voltage test on insulating gloves (71) and / or a method for conducting a voltage test on insulating boots (72) using the insulating product voltage test device according to claim 9; the method for conducting a voltage test on insulating boots (72) comprises the following steps: S1. Move the second conductive box (62) containing the insulating boot (7201) that has completed the test to one end thereof located above the insulating top plate (11) and close to the separation bracket (8); S2, taking the insulating boot (7201) after the test out of the inner cavity of the second conductive box (62) and rotating it into a V-shape, so that the steel ball (622) rolls to the end of the inner cavity of the insulating boot (7201) after the test close to the heel (722); S3, placing the insulating boot (7202) to be tested in the inner cavity of the second conductive box (62) and pressing it onto the sponge layer (621); S4, pressing the insulating boot (7201) after the test into a V-shape onto the separation bracket (8), and pressing the outer side wall of the heel (722) onto the first water absorbing sleeve (83); S5, rotating the insulating boot (7201) after the test, until the skirt opening (721) is tilted downward, and the steel ball (622) rolls out through the skirt opening (721) and falls into the inner cavity of the insulating boot (7202) to be tested; during the process, the third conductive liquid (623) adhered to the bottom surface of the insulating boot (7201) after the test first penetrates into the first water absorption sleeve (83) and the second water absorption sleeve (84), and then adheres to the surface of the column (81) and flows downward until it drips into the water collecting tank (13); S6, moving the second conductive box (62) to be located below the conductive upright pole (4); S7, the conductive vertical rod (4) moves downward until it is inserted into the inner cavity of the insulating boot (7202) to be tested, and the bottom end of the conductive vertical rod (4) contacts the steel ball (622) located in the inner cavity of the insulating boot (7202) to be tested; S8. Power the conductive pole (4) and apply voltage to the insulating boot (7202) to be tested.

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