An apparatus and method for withstand voltage testing of insulating products

Abstract

This invention discloses an insulating product withstand voltage testing device and method, relating to the field of electrical withstand voltage testing technology. The insulating product withstand voltage testing device includes a workbench, insulating columns, cross braces, conductive columns, a voltage-conducting plate, a housing assembly, and a separation bracket. When the outer wall of the heel of the tested insulating boot is pressed onto the separation bracket, steel balls can roll out through the downwardly angled skirt opening and fall into the inner cavity of the insulating boot to be tested. A third conductive liquid at the bottom of the tested insulating boot adheres to the separation bracket and flows downwards along it. The first conductive housing, when pressed onto the voltage-conducting plate, conducts electricity, forming the circuit required for the withstand voltage test of insulating gloves; the second conductive housing, when pressed onto the voltage-conducting plate, conducts electricity, forming the circuit required for the withstand voltage test of insulating boots. When the two are interchanged, there is no need to install or remove corresponding wires, thus reducing the number of steps required for operation.

Description

Technical Field

[0001] This invention relates to the field of electrical withstand voltage testing technology, specifically to a withstand voltage testing device and method for insulating products. Background Technology

[0002] After prolonged use, insulation products may experience a decrease in insulation performance due to aging, wear, and other factors. Therefore, it is usually necessary to conduct withstand voltage tests on insulation products periodically to assess their safety performance.

[0003] Insulating gloves and insulating boots are commonly used insulating products. The withstand voltage tests for insulating gloves and insulating boots are similar, therefore they are often integrated into a single testing device to improve ease of operation and reduce costs.

[0004] Traditional integrated withstand voltage testing equipment uses a plastic box to hold insulating products. The bottom of the plastic box has a conductive metal plate, which is connected to the main body of the testing machine through wires inserted into the side wall of the plastic box to form a circuit. However, the size of the plastic box needs to be compatible with insulating gloves and insulating boots (for installing insulating clamps). Therefore, multiple plastic boxes of different sizes are usually provided. When changing insulating products, the wires of the corresponding plastic box are connected to the main body of the testing machine. That is, the wires need to be frequently loaded and unloaded, which increases the number of operation steps, reduces testing efficiency, and accelerates the bending and wear of the wires. Summary of the Invention

[0005] In order to overcome the problem in the above-mentioned background technology that "the corresponding wires need to be installed and removed when changing plastic boxes, which leads to an increase in 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-mentioned technical problems is as follows:

[0007] An insulating product withstand voltage testing device includes a workbench, an insulating column, a cross brace, a conductive column, a voltage-conducting plate, and a housing assembly. The workbench includes an insulating top plate. The bottom end of the insulating column is connected to the insulating top plate, and the top end is connected to the cross brace. The conductive column and the cross brace are connected in a cross shape, and the conductive column can move vertically and be locked. The voltage-conducting plate is mounted on the upper surface of the insulating top plate and located below the conductive column. The housing assembly includes a first conductive housing for accommodating insulating gloves and a second conductive housing for accommodating insulating boots. The first conductive housing can be pressed together. On the conductive voltage plate; the second conductive box body can be pressed against the conductive voltage plate; the bottom end of the conductive rod can be immersed in the first conductive liquid in the inner cavity of the insulating glove, and the lower 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 rod can contact the steel ball in the inner cavity of the insulating boot, and the bottom surface of the insulating boot can be pressed against the sponge layer in the inner cavity of the second conductive box body, and the sponge layer contains a third conductive liquid; it also includes a separation bracket disposed on the side of the insulating top plate and used to prevent the steel ball from contacting the third conductive liquid.

[0008] As a further optimization of the present invention, when the outer wall of the heel of the tested insulating boot is pressed onto the separation bracket, the steel ball can roll out through the downwardly oriented skirt opening and fall into the inner cavity of the tested insulating boot. The third conductive liquid at the bottom surface of the tested insulating boot can be absorbed by the separation bracket and flow downward along the separation bracket. The separation bracket is provided with an arc-shaped groove, and the outer wall of the heel of the tested insulating boot can be fitted into the arc-shaped groove.

[0009] As a further optimization of the present invention, the separation bracket includes a column, an arc-shaped support rod, a first water-absorbing sleeve, and a second water-absorbing 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-absorbing sleeve is detachably installed on the outer periphery of the arc-shaped support rod, and the second water-absorbing sleeve is detachably installed on the top of the outer periphery of the column; the bottom end of the first water-absorbing sleeve and the top end of the second water-absorbing sleeve are pressed together.

[0010] As a further optimization of the present invention, the first absorbent sleeve sidewall is provided with a first cutting slit that can be opened and closed along the axial direction, and the middle of the first cutting slit is provided with a receiving hole that can accommodate the top of the column; the second absorbent sleeve sidewall is provided with a second cutting slit that can be opened and closed along the axial direction.

[0011] As a further optimization of the present invention, the arc-shaped groove is disposed on the upper surface of the first absorbent sleeve.

[0012] As a further optimization of the present invention, the bottom end of the second absorbent sleeve is provided with an inverted conical surface.

[0013] As a further optimization of the present invention, the separation bracket further includes a water-guiding connecting block with a vertical cross-section of parallelogram; the first connecting sidewall of the water-guiding connecting block is obliquely upward and fixedly connected to the outer sidewall of the workbench, and the second connecting sidewall of the water-guiding connecting block is obliquely downward and fixedly connected to the bottom sidewall of the column.

[0014] As a further optimization of the present invention, a water collection tank for containing the third conductive liquid is provided below the bottom of the column.

[0015] As a further optimization of the present invention, the side wall of the workbench is provided with a box bracket for supporting the first conductive box and / or the second conductive box; the first conductive box can be inserted into the inner cavity of the second conductive box.

[0016] A method for withstand voltage testing of insulating products includes a method for withstand voltage testing of insulating gloves and / or insulating boots using an insulating product withstand voltage testing device. The insulating boot withstand voltage testing method includes the following steps: S1, moving the second conductive box containing the tested insulating boot to one end above the insulating top plate near the separating bracket; S2, removing the tested insulating boot from the inner cavity of the second conductive box and rotating it into a V-shape, causing the steel ball to roll to the end of the inner cavity of the tested insulating boot near the heel; S3, placing the insulating boot to be tested inside the inner cavity of the second conductive box and pressing it against the sponge layer; S4, pressing the tested insulating boot into the separating bracket in a V-shape, and the shoe... The outer wall of the heel is pressed onto the first absorbent sleeve; S5, rotate the tested insulating boot until the skirt opening is angled downwards, and the steel ball rolls out through the skirt opening and falls into the inner cavity of the insulating boot to be tested; during this process, the third conductive liquid adhering to the bottom surface of the tested insulating boot first seeps into the first absorbent sleeve and the second absorbent sleeve, then adheres to the surface of the column and flows downwards until it drips into the water collection tank; S6, move the second conductive box to a position below the conductive upright; S7, move the conductive upright downwards until it is inserted into the inner cavity of the insulating boot to be tested, and the bottom end of the conductive upright contacts the steel ball located in the inner cavity of the insulating boot to be tested; S8, supply power to the conductive upright to apply voltage to the insulating boot to be tested.

[0017] In summary, the present invention has at least one of the following advantages:

[0018] (1) In this invention, the first conductive box can conduct electricity when it is pressed onto the voltage plate, and is used to form the circuit required for the withstand voltage test of insulating gloves; the second conductive box can conduct electricity when it is pressed onto the voltage plate, and is used to form the circuit required for the withstand voltage test of insulating boots; when the first conductive box and the second conductive box are replaced, there is no need to install or remove the corresponding wires, thereby reducing the operation steps of the user and improving the test efficiency.

[0019] (2) When the steel ball is used 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 ball inside, and avoids the steel ball from contacting the third conductive liquid adhering to the sole of the shoe, thereby avoiding the steel ball from rusting and improving the accuracy of the insulating boot withstand pressure test.

[0020] (3) The first absorbent sleeve is made of sponge or foam material, which has excellent elasticity so that the first absorbent sleeve can fit the outer wall of the heel of the insulated boot, thereby improving the absorption rate and efficiency of the third conductive liquid. At the same time, it avoids the problem of the third conductive liquid passing through the gap between the first absorbent sleeve and the heel and flowing in the direction of the steel ball, that is, it avoids the problem of the third conductive liquid coming into contact with the steel ball, thereby avoiding the corrosion of the steel ball.

[0021] (4) The third conductive liquid flows downward along the bottom of the shoe sole. When it reaches the outer wall of the heel, it contacts the first absorbent sleeve. Then, the third conductive liquid flows downward along the bottom of the shoe sole. When it reaches the outer wall of the heel, it contacts the first absorbent sleeve. Then, it flows downward along the first absorbent sleeve, the second absorbent sleeve and the separation bracket to achieve the separation of the steel ball and the third conductive liquid, thereby achieving the guidance of the third conductive liquid.

[0022] (5) When the end of the water-conducting connection block away from the column is set at an angle upward, the third conductive liquid will flow downward along the column under its own gravity when it passes through the intersection of the column and the water-conducting connection block, instead of flowing upward along the water-conducting connection 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, thus bringing the risk of electric leakage and the user slipping).

[0023] (6) When the insulating boot is pressed down from top to bottom onto the first absorbent sleeve, the third conductive liquid in the pressure area on the upper surface of the first absorbent sleeve can be squeezed out. When the insulating boot is removed from bottom to top, the pressure area on the upper surface of the first absorbent sleeve will rebound and expand, which will reduce the water content of the pressure area. When the next insulating boot is pressed down from top to bottom onto the pressure area, 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 corrosion).

[0024] (7) The third conductive liquid flowing out from the groove on the bottom of the shoe sole can also be absorbed and guided by the present invention, avoiding contact with the steel ball; it has better functional reliability than the traditional method of wiping with a cloth.

[0025] (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 cloth requires the user to use both hands. Therefore, the present invention has higher ease of operation. Attached Figure Description

[0026] The present application will be further explained below with reference to the accompanying drawings:

[0027] Figure 1 This is a front view schematic diagram of the overall structure of the present invention;

[0028] Figure 2 A front view schematic diagram of the first and second conductive boxes in the state of being pressed together with the conductive voltage plate.

[0029] Figure 3 This is a top view of the cross section of the horizontal strut structure.

[0030] Figure 4 This is a front view diagram of the insulating gloves under withstand voltage test conditions.

[0031] Figure 5 This is a side view of the insulating gloves under withstand voltage test conditions.

[0032] Figure 6 This is a top-view schematic diagram of the insulating gloves under withstand voltage test conditions.

[0033] Figure 7 This is a front view diagram of the insulating boot under withstand voltage test conditions.

[0034] Figure 8 This is a side view of the insulating boot under withstand voltage test conditions.

[0035] Figure 9 This is a top-view schematic diagram of the insulating boot under withstand voltage test conditions;

[0036] Figure 10 A schematic diagram showing the state of steel balls and the third conductive liquid falling into the inner cavity of the insulating boot to be tested;

[0037] Figure 11 A front view diagram showing the insulated boots in a V-shaped configuration after the test is completed;

[0038] Figure 12 A front view schematic diagram showing the separation state of the steel ball and the third conductive liquid;

[0039] Figure 13 Right view schematic diagram of the separated support structure;

[0040] Figure 14 This is a schematic diagram of the first water-absorbing jacket structure;

[0041] Figure 15 This is a schematic diagram of the cross-sectional structure of the first water-absorbing jacket;

[0042] Figure 16 This is a schematic diagram of the cross-sectional structure of the second suction jacket;

[0043] Figure 17 This is a schematic diagram showing the position of the inverted cone-shaped surface and the front view of the structure.

[0044] Figure 18 A front view diagram showing the location and structure of the water-guiding connection block;

[0045] Figure 19 This is a front view of the vertical section of the water-conducting connecting block structure.

[0046] Figure 20 This is a front view schematic diagram of the workbench structure;

[0047] Figure 21 This is a schematic diagram of the location of the wiring holes and the front view of the structural elevation section.

[0048] Explanation of reference numerals in the attached figures:

[0049] In the picture,

[0050] 1. Workbench; 11. Insulating top plate; 111. Wiring hole; 112. Connecting wire; 12. Box bracket; 13. Water collection tank; 14. Support leg; 15. Side plate; 16. Base plate; 17. Reinforcing column;

[0051] 2. Insulating posts;

[0052] 3. Horizontal brace; 31. Locking bolt; 32. Vertical insertion hole; 33. First screw hole;

[0053] 4. Conductive support pole;

[0054] 5. Conductive voltage plate; 51. Sealing strip;

[0055] 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. Insulating clamp; 623. Third conductive liquid;

[0056] 7. Insulating products; 71. Insulating gloves; 711. Cuffs; 72. Insulating boots; 721. Skirt heels; 722. Heels; 7201. Insulating boots that have completed testing; 7202. Insulating boots awaiting testing;

[0057] 8. Separation bracket; 801. Arc-shaped slot; 81. Column; 811. Limiting bolt; 812. Second screw hole; 82. Arc-shaped support rod; 83. First water-absorbing sleeve; 831. First cutting slit; 832. Receiving hole; 84. Second water-absorbing sleeve; 841. Second cutting slit; 842. Support insertion hole; 843. Inverted conical surface; 85. Water-guiding connecting block; 851. First connecting sidewall; 852. Second connecting sidewall. Detailed Implementation

[0058] Based on the above-described structural features of this application, the implementation methods of this application will be further described as follows:

[0059] Reference Figure 1 , Figure 2 , Figure 5 and Figure 8 Insulating products 7 include insulating gloves 71 and insulating boots 72.

[0060] Reference Figures 1-2 This embodiment provides an insulating product withstand voltage testing device, including a workbench 1, an insulating column 2, a cross brace 3, a conductive column 4, a voltage-conducting plate 5, and a box assembly 6. The workbench 1 is a hollow box structure, and a voltmeter and an ammeter are installed inside the cavity. The voltmeter is used to detect the voltage that the insulating product 7 can withstand, and the ammeter is used to detect the current that the insulating product 7 can withstand.

[0061] Reference Figures 1-2 The workbench 1 includes an insulating top plate 11, and insulating columns 2 whose bottom ends are connected to the insulating top plate 11 (e.g., by bolts) and whose top ends are connected to the cross brace 3 (e.g., by bolts). The insulating columns 2 are vertically arranged insulating columns (insulating columns are conventional existing technology in the industry and will not be described in detail). The conductive column 4 is connected to the cross brace 3 in a cross shape, and the conductive column 4 can move vertically and be locked.

[0062] Reference Figure 2 and Figure 3 The horizontal support rod 3 has a locking bolt 31 installed on its side wall for locking the conductive upright rod 4 (fixing the height of the conductive upright rod 4). The horizontal support rod 3 has a vertically oriented insertion hole 32, into which the conductive upright rod 4 is inserted and can move vertically. The side wall of the horizontal support rod 3 has a first screw hole 33, which is perpendicularly connected to the vertical insertion hole 32. The locking bolt 31 is threaded into the first screw hole 33. When the locking bolt 31 rotates, it can move along the axial direction of the first bolt, thereby moving closer to or further away from the vertical insertion hole 32, thus pressing the conductive upright rod 4 to lock its height, or disengaging the locking bolt 31 from the conductive upright rod 4 to release the lock.

[0063] Reference Figure 1 and Figure 2The voltage-conducting plate 5 is installed on the upper surface of the insulating top plate 11 and located below the conductive upright 4.

[0064] Reference Figure 1 , Figures 4-9 The housing assembly 6 includes a first conductive housing 61 for accommodating an insulating glove 71 and a second conductive housing 62 for accommodating an insulating boot 72. The first conductive housing 61 is a cuboid shell structure with an open top, a sealed bottom, and sealed sides, thereby adapting to accommodate the insulating glove 71; the second conductive housing 62 is a cuboid shell structure with an open top, a sealed bottom, and sealed sides, thereby adapting to accommodate the insulating boot 72.

[0065] Reference Figure 1 and Figure 2 The bottom surface of the first conductive box 61 can be pressed onto the voltage-conducting plate 5 to achieve conductivity between the first conductive box 61 and the conductive plate; the bottom surface of the second conductive box 62 can be pressed onto the voltage-conducting plate 5 to achieve conductivity between the second conductive box 62 and the conductive plate; thus, it is used to measure the voltage that the insulating product 7 withstands.

[0066] Reference Figure 1 and Figure 2 When the first conductive box 61 is pressed onto the conductive plate, the conductive rod 4 is positioned above the first conductive box 61. At this time, the conductive rod 4 can move downwards to insert into the inner cavity of the first conductive box 61 and the inner cavity of the insulating glove 71, thereby enabling conductivity. When the second conductive box 62 is pressed onto the conductive plate, the conductive rod 4 is positioned above the second conductive box 62. At this time, the conductive rod 4 can move downwards to insert into the inner cavity of the second conductive box 62 and the inner cavity of the insulating wire, thereby enabling conductivity.

[0067] Reference Figure 2 When the conductive pole 4 is locked, its height and position are fixed, allowing it to be used to replace the insulating product 7 (in conjunction with...). Figure 12 The specific steps are as follows: The user moves the conductive rod 4 upward until the bottom of the conductive rod 4 is higher than the top of the first conductive box 61 / second conductive box 62; then tighten the locking bolt 31 so that the locking bolt 31 can press the conductive rod 4 to prevent the conductive rod 4 from sliding down freely. Then the user can free up both hands to push / pull the first conductive box 61 / second conductive box 62 until the first conductive box 61 / second conductive box 62 is moved away from under the cross brace 3, so that the top opening of the first conductive box 61 / second conductive box 62 is fully exposed. Then the user can easily take out the insulating product 7 inside the first conductive box 61 / second conductive box 62, or put the insulating product 7 into the first conductive box 61 / second conductive box 62.

[0068] Reference Figures 4-5The bottom end of the conductive rod 4 can be immersed in the first conductive liquid 611 inside the cavity of the insulating glove 71, and the lower part of the outer wall of the insulating glove 71 can be immersed in the second conductive liquid 612 inside the cavity of the first conductive box 61. The bottom end of the conductive rod 4 and the first conductive liquid 611 can conduct electricity and together form an electrode structure, thereby transferring charge to the inner surface of the insulating glove 71; the voltage plate 5, the first conductive box 61 and the second conductive liquid 612 can conduct electricity and together form an electrode structure, thereby transferring charge to the outer surface of the insulating glove 71; thus, a voltage difference is formed between the inner and outer surfaces of the insulating glove 71.

[0069] Reference Figures 4-6 The side wall at the cuff 711 of the top of the insulating glove 71 is connected to the top edge of the first conductive box 61 by insulating clamps 63. Several insulating clamps 63 are used to limit the side wall at the cuff 711 of the insulating glove 71, so as to prevent the side wall at the cuff 711 of the insulating glove 71 from contacting the conductive rod 4, thereby reducing the test error.

[0070] Reference Figure 8 The inner cavity of the insulating boot 72 is provided with several steel balls 622, which are stacked to form a steel ball layer. The height of the steel ball layer is not less than 30 mm.

[0071] Reference Figures 7-8 The bottom end of the conductive rod 4 is inserted into the steel ball layer. 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 jointly form an electrode structure, thereby transferring the charge to the inner surface of the insulating boot 72.

[0072] Reference Figures 7-8 The bottom of the inner cavity of the second conductive box 62 is provided with a sponge layer 621, and a third conductive liquid 623 is provided inside the sponge layer 621. The third conductive liquid 623 completely wets the sponge layer 621, thereby enabling the sponge layer 621 to conduct electricity.

[0073] Reference Figures 7-8 If the bottom surface of the insulating boot 72 can be pressed against the sponge layer 621 inside the cavity of the second conductive box 62, then the voltage-conducting plate 5, the second conductive box 62, the sponge layer 621 and the third conductive liquid 623 can conduct electricity and jointly form an electrode structure, thereby transferring the charge to the outer surface of the insulating boot 72; then a voltage difference is formed between the inner surface and the outer surface of the insulating boot 72.

[0074] Reference Figures 7-9The side wall at the top edge 721 of the insulating boot 72 is connected to the top edge of the second conductive box 62 by insulating clamps 63. Several insulating clamps 63 are used to limit the side wall at the top edge 721 of the insulating boot 72, so as to prevent the side wall at the top edge 721 of the insulating boot 72 from contacting the conductive pole 4, thereby reducing test error.

[0075] Reference Figure 10 When multiple insulating boots 72 need to be subjected to withstand voltage tests in sequence, the steel balls 622 are reused. That is, the steel balls 622 in the insulating boot 7201 that has been tested are poured into the insulating boot 7202 to be tested. In order for the steel balls 622 to roll out of the insulating boot 7201 that has been tested, the skirt opening 721 needs to be tilted downward. At this time, the (droplet-shaped) third conductive liquid 623 (which comes from the sponge layer 621; when the insulating boot 72 is pressed onto the sponge layer 621 and subjected to withstand voltage tests, the third conductive liquid 623 will adhere to the bottom surface of the sole) of the insulating boot 7201 that has been tested will flow along the bottom of the outer surface of the insulating boot 7201 towards the skirt opening 721, so that the steel balls 622 and the third conductive liquid 623 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. After the steel ball 622 comes into contact with the third conductive liquid 623, the surface of the steel ball 622 is prone to corrosion and rust formation. Rust has low conductivity, thus reducing the overall conductivity and increasing the resistance of the steel ball 622. This leads to an increase in the voltage distributed across the steel ball 622, resulting in reduced calibration accuracy of traditional testing equipment and consequently reduced withstand voltage test accuracy. (In some traditional techniques, after the insulation boot 72 test is completed, the user wipes the bottom of the sole of the insulation boot 72 with a cloth; however, the sole usually has grooves to increase friction during walking, making it difficult for the cloth to reach into the grooves and absorb the third conductive liquid 623. Therefore, when the steel ball 622 is poured out of the insulation boot 72 while the sole is upright, the third conductive liquid 623 stored in the grooves will still flow downwards first, then towards the skirt opening 721, and eventually contact the steel ball 622.) To avoid this problem, combined with... Figure 11 and Figure 12 The insulation product withstand voltage test device also includes a separation bracket 8 located on the side of the insulation top plate 11 to prevent the steel ball 622 from contacting the third conductive liquid 623.

[0076] Reference Figure 12When the outer wall of the heel 722 of the completed insulating boot 7201 is pressed onto the separation bracket 8, the steel ball 622 can roll out through the downwardly angled skirt opening 721 and fall into the inner cavity of the insulating boot 7202 to be tested. The third conductive liquid 623 on the bottom surface of the completed insulating boot 7201 adheres to the separation bracket 8 and flows downward along the separation bracket 8. This achieves the separation 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, thereby avoiding the problem of the steel ball 622 rusting and improving the test accuracy.

[0077] Reference Figure 12 and Figure 13 The separation bracket 8 is provided with an arc-shaped groove 801. The outer wall of the heel 722 of the tested insulating boot 7201 can fit into the arc-shaped groove 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 arc-shaped groove 801 and the heel 722 and flowing towards the steel ball 622, thus improving the conductivity of the third conductive liquid 623. During the pressure resistance test, the bottom surface of the sole of the insulating boot 72 comes into contact with the sponge layer 621 and the third conductive liquid 623 adheres to it. Therefore, when the sole of the (tested insulating boot 7201) is 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 wets the separation bracket 8 and then flows downward along the separation bracket 8, instead of continuing to flow diagonally downward (near the heel opening 721) along the insulating boot 72.

[0078] Reference Figures 12-13The separation bracket 8 includes a column 81, an arc-shaped support rod 82, a first absorbent sleeve 83, and a second absorbent sleeve 84. The middle part 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 absorbent sleeve 83 is detachably installed on the outer periphery of the arc-shaped support rod 82, and the second absorbent sleeve 84 is detachably installed on the top of the outer periphery of the column 81. The bottom end of the first absorbent sleeve 83 and the top end of the second absorbent sleeve 84 are pressed together. The third conductive liquid 623 flows downward along the bottom surface of the shoe sole, and when it reaches the outer wall of the heel 722, it contacts the first absorbent sleeve 83. After that, it flows downward in sequence along the first absorbent sleeve 83, the second absorbent sleeve 84, and the separation bracket 8. After removing the first absorbent sleeve 83 and / or the second absorbent sleeve 84, the user can clean them (the first absorbent sleeve 83 and / or the second absorbent sleeve 84 will attract dust if exposed to air for a long time, which will reduce their water absorption capacity, i.e., reduce their ability to absorb the third conductive liquid 623; cleaning can remove dust and avoid such problems) and dry them (the first absorbent sleeve 83 and / or the second absorbent sleeve 84 are prone to mold if they are wet for a long time. When the mold grows too much, it will block the holes of the first absorbent sleeve 83 and / or the second absorbent sleeve 84, which will reduce their water absorption capacity). The decrease means that the ability to absorb the third conductive liquid 623 decreases; drying can remove moisture and avoid such problems, which is used for long-term shutdown, maintenance or storage of the present invention), replacement (the first absorbent sleeve 83 will be damaged by accidental impact or repeated pressing by the insulating boot 72. After long-term use, the first absorbent sleeve 83 and / or the second absorbent 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 then it is necessary to replace the first absorbent sleeve 83 and / or the second absorbent sleeve 84) and other operations.

[0079] Reference Figures 12-13 The column 81 and the arc-shaped support rod 82 are used to support the completed insulating boot 7201, the first absorbent sleeve 83 and the second absorbent sleeve 84, thereby supporting the completed insulating boot 7201 above the insulating boot 7202 to be tested. When the completed insulating boot 7201 rotates, the falling steel ball 622 can fall into the inner cavity of the insulating boot 7202 to be tested. The first absorbent sleeve 83 and the second absorbent sleeve 84 are used to absorb the third conductive liquid 623.

[0080] Reference Figures 12-16The first absorbent sleeve 83 has a C-shaped cross-section to fit the arc-shaped support rod 82; the second absorbent sleeve 84 has a C-shaped cross-section to fit the column 81. The sidewall of the first absorbent sleeve 83 has a first slit 831 that can open and close along the axial direction, and the middle of the first slit 831 has a receiving hole 832 that can accommodate the top of the column 81. The sidewall of the second absorbent sleeve 84 has a second slit 841 that can open and close along the axial direction. Both the first absorbent sleeve 83 and the second absorbent sleeve 84 are made of sponge or foam material, thus possessing excellent elasticity. This allows the first absorbent sleeve 83 to fit snugly against 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. Simultaneously, it prevents the third conductive liquid 623 from passing through the gap between the first absorbent sleeve 83 and the outer wall of the heel 722 of the tested insulating boot 7201 and flowing towards the steel ball 622. The user can pry open the first cutting slit 831 and wrap the first absorbent sleeve 83 around the outer periphery of the arc-shaped support rod 82. After the user releases his hand, the first absorbent sleeve 83 automatically springs back to close the first cutting slit 831, achieving a snap-fit ​​installation. The user can also pry open the second cutting slit 841 and wrap the second absorbent sleeve 84 around the outer periphery of the column 81. After the user releases his hand, the second absorbent sleeve 84 automatically springs back to close the second cutting slit 841, achieving a snap-fit ​​installation.

[0081] Reference Figure 13 and Figure 16 A limiting bolt 811 can be detachably installed on the side wall of the column 81. The side wall of the column 81 has a second threaded hole 812 adapted to the limiting bolt 811, and the end of the limiting bolt 811 is threaded into the second threaded hole 812. A support insertion hole 842 is provided on the side wall of the second absorbent sleeve 84 away from the second cutting slit 841. The support insertion hole 842 is a through hole structure; the middle part of the second threaded hole 812 can be fitted into the support insertion hole 842, thereby applying an upward supporting force to the second absorbent sleeve 84, thus pressing (and tightening) the bottom end of the first absorbent sleeve 83 and the top end of the second absorbent sleeve 84 together, thereby increasing the contact area between the first absorbent sleeve 83 and the second absorbent sleeve 84, ensuring that the third conductive liquid 623 can flow from the first absorbent sleeve 83 to the second absorbent sleeve 84 (the third conductive liquid 623 tends to flow downwards due to its own weight).

[0082] Compared to installing a limiting ring, this invention uses a limiting bolt 811 to support the second water-absorbing sleeve 84 from bottom to top; because the limiting bolt 811 will not obstruct the downward flow of the third conductive liquid 623.

[0083] Reference Figure 13 and Figure 16After removing the limiting bolt 811 from the side wall of the column 81, the user can pry open the second cutting slit 841 and remove the second water-absorbing sleeve 84 from the side wall of the column 81. The user then fastens the second water-absorbing sleeve 84 onto the outside of the column 81, and then aligns the second screw hole 812 and the support insertion hole 842 coaxially (i.e., aligned with each other). After that, the user inserts the limiting bolt 811 into the support insertion hole 842 and tightens it with the second screw hole 812 to install the second water-absorbing sleeve 84.

[0084] The arc-shaped groove 801 is located on the upper surface of the first absorbent sleeve 83, so the user can place the tested insulating boot 7201 from top to bottom into the arc-shaped groove 801 and press it against the first absorbent sleeve 83, or remove the tested insulating boot 7201 from the arc-shaped groove 801 from bottom to top, which has the technical effect of convenient operation; at the same time, the tested insulating boot 7201 pressing against the first absorbent sleeve 83 from top to bottom can squeeze the third conductive liquid 623 in the first absorbent sleeve 83 downward, and combined with the downward flow speed of the third conductive liquid 623 due to its own weight, it can increase the overall downward flow speed of the third conductive liquid 623.

[0085] Meanwhile, the tested insulating boot 7201 presses down on the first absorbent sleeve 83 from top to bottom, which squeezes out the third conductive liquid 623 in the pressure area on the upper surface of the first absorbent sleeve 83 (the squeezed-out third conductive liquid 623 flows down along the outer wall of the first absorbent sleeve 83 and enters the second absorbent sleeve 84). When the tested insulating boot 7201 is removed from bottom to top, the pressure area on the upper surface of the first absorbent sleeve 83 will rebound, reducing the water content of the pressure area. Therefore, when the next tested insulating boot 7201 presses down on the pressure area of ​​the first absorbent sleeve 83 from top to bottom, there will be no problem of the third conductive liquid 623 splashing (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 corrosion).

[0086] Reference Figure 17The bottom of the second absorbent sleeve 84 is provided with an inverted conical surface 843. When the third conductive liquid 623 accumulates at the bottom of the second absorbent 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 of the column 81 and falls into the water collection tank 13, avoiding the problem of the third conductive liquid 623 splashing in the water collection tank 13 (the water collection tank 13 stores a certain amount of third conductive liquid 623. If the dripping height is too high, the instantaneous velocity of the third conductive liquid 623 when it falls into the liquid surface will be too high, resulting in the problem of the third conductive liquid 623 splashing; the third conductive liquid 623 splashing out of the water collection tank 13 will make the workshop floor slippery, which may easily cause the equipment to leak electricity and the risk of users slipping).

[0087] Reference Figure 18 and Figure 19 The separation bracket 8 also includes a water-guiding connecting block 85 with a vertical cross-section of a parallelogram. The water-guiding connecting block 85 has a horizontally arranged quadrangular prism structure. The first connecting sidewall 851 of the water-guiding connecting block 85 is inclined upward and fixedly connected to the outer sidewall of the workbench 1 (e.g., by bolt or welding). The second connecting sidewall 852 of the water-guiding connecting block 85 is inclined downward and fixedly connected to the bottom sidewall of the column 81 (e.g., by bolt or welding). Therefore, since the end of the water-guiding connecting block 85 away from the column 81 is inclined upward, when the third conductive liquid 623 flows through the intersection of the column 81 and the water-guiding connecting block 85, the third conductive liquid 623 will flow downward along the column 81 under its own gravity, instead of flowing upward along the water-guiding connecting block 85. This can prevent the third conductive liquid 623 from flowing to the outer sidewall of the workbench 1 (the third conductive liquid 623 flows downward along the outer sidewall of the workbench 1, which cannot be collected and will cause the ground under the workbench 1 to become slippery, thus posing a risk of electric leakage and slipping for users).

[0088] Reference Figure 18 and Figure 19 At least two water guide connecting blocks 85 are provided and 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 large torque on a single water guide connecting block 85 (it is difficult for the column 81 to be set absolutely vertically, which will generate torque on the water guide connecting block 85).

[0089] Reference Figure 18 A water collection tank 13 for containing the third conductive liquid 623 is provided at the bottom of the column 81. The water collection tank 13 is located in front of the workbench 1 and is used to collect the dripping third conductive liquid 623. Both the workbench 1 and the water collection tank 13 are placed on the floor of the workshop.

[0090] Reference Figure 20 The workbench 1 also includes support legs 14, side plates 15, a base plate 16, and reinforcing columns 17. The top of the support leg 14 is fixedly connected to the outer edge of the bottom surface of the insulating top plate 11 (e.g., by bolts), and the bottom of the support leg 14 is fixedly connected to the outer edge of the top surface of the floor (e.g., by bolts), thereby supporting the insulating top plate 11. The side plate 15 is located outside the support leg 14 and is fixedly connected to the outer wall of the support leg 14 (e.g., by bolts or welding), thereby protecting the internal circuitry of the workbench 1 and preventing splashed water from entering the internal cavity of the workbench 1 and damaging the circuitry. The side plate 15 has a rectangular hole, and the first connecting side wall 851 of the water-guiding connecting block 85 is placed in the rectangular hole and fixedly connected to the outer wall of the support leg 14 (e.g., by bolts or welding), thereby supporting the separation bracket 8. The reinforcing column 17 is located directly below the conductive plate 5 and supports the conductive plate 5 and the first conductive box 61, second conductive box 62, insulating glove 71, insulating boot 72, first conductive liquid 611, second conductive liquid 612, and third conductive liquid 623 above it, thereby preventing overload damage to the insulating top plate 11 (e.g., bending or cracking). The top of the reinforcing column 17 is fixedly connected to the outer edge of the bottom surface of the insulating top plate 11 (e.g., by bolts), and the bottom of the reinforcing column 17 is fixedly connected to the outer edge of the top surface of the floor (e.g., by bolts). The insulating top plate 11 is made of waterproof insulating material, such as ceramic or resin, thereby preventing leakage of the conductive plate 5 and providing excellent waterproof performance.

[0091] Reference Figure 1 , Figure 2 and Figure 18 The workbench 1 has a box support 12 on its side wall for supporting the first conductive box 61 and / or the second conductive box 62; the side wall of the box support 12 is fixedly connected to the support leg 14 and the side plate 15 by through bolts. During non-working hours, the box assembly 6 is placed on the box support 12 for storage. Since the first conductive box 61 can be inserted into the inner cavity of the second conductive box 62, the first conductive box 61 and the second conductive box 62 can be stacked vertically on the box support 12, thereby reducing the floor space occupied and improving the overall storage convenience of the invention.

[0092] Reference Figure 21The insulating top plate 11 is provided with a wiring hole 111, and the end of the connecting wire 112 connected to the voltage conductive plate 5 is inserted into the wiring hole 111 to achieve wiring. 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 voltage conductive plate 5 and the insulating top plate 11 are sealed and fixedly connected by bolts and a sealing strip 51. Therefore, the first conductive liquid 611, the second conductive liquid 612, and the third conductive liquid 623 that accidentally drip onto the upper surface of the voltage conductive plate 5 and / or the insulating top plate 11 cannot pass through the gap between the voltage 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.

[0093] The first conductive liquid 611, the second conductive liquid 612, and the third conductive liquid 623 are all water.

[0094] The invention also includes an electrical cabinet and a transformer. The electrical cabinet is bolted to the inner cavity of the workbench 1, and the transformer is placed on the floor of the workshop. The transformer is used to increase the voltage of the external power supply to the required voltage. The conductive pole 4 and the transformer are connected to the electrical cabinet via wires. The voltage conductive plate 5 is connected to the electrical cabinet via connecting wire 112. The electrical cabinet is connected to the external power supply and the external controller (e.g., a computer or a 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 starting and stopping status of the transformer in this invention through the electrical cabinet.

[0095] In this invention, the insulating boot 72 includes a completed insulating boot 7201 and an insulating boot 7202 to be tested. In actual operation, multiple insulating boots 72 are usually required to undergo withstand voltage tests in sequence (while the steel balls 622 need to be used in different insulating boots 72 in sequence). Therefore, taking a certain insulating boot 72 as a reference, the insulating boot 72 that has completed the withstand voltage test is the completed insulating boot 7201, and the next insulating boot 72 that needs to undergo the withstand voltage test is the insulating boot 7202 to be tested.

[0096] Reference Figure 4 and Figure 6 The dimensions of the first conductive box 61 are adapted to the dimensions of the insulating glove 71 to facilitate the installation of the corresponding insulating clamps 63; see reference. Figure 7 and Figure 9 The dimensions of the second conductive box 62 are adapted to the dimensions of the insulating boot 72 to facilitate the installation of the corresponding insulating clamp 63.

[0097] A method for withstand voltage testing of insulating products includes a withstand voltage test method for insulating gloves 71 and / or a withstand voltage test method for insulating boots 72, performed using an insulating product withstand voltage testing device.

[0098] The 71 withstand voltage test method for insulating gloves includes the following steps:

[0099] A1. Place the insulating glove 71 with the cuff 711 facing upwards inside the first conductive box 61 and secure it with insulating clamps 63.

[0100] 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 surface of the first conductive liquid 611 and the liquid surface of the second conductive liquid 612 are level.

[0101] A3. Move the first conductive box 61 to a position below the conductive pole 4.

[0102] A4. Move the conductive rod 4 downwards until it is inserted into the inner cavity of the insulating glove 71, and the bottom end of the conductive rod 4 is immersed in the first conductive liquid 611; then tighten the locking bolt 31 to fix the height of the conductive rod 4.

[0103] A5. Power the conductive pole 4 and apply a test voltage to the insulating glove 71 (for example, for a low-voltage insulating glove with a service life of six months, the test voltage is 2.5 kV for 1 minute, and the leakage current is required to be no more than 2.5 mA; for a high-voltage insulating glove with a service life of six months, the test voltage is 8 kV for 1 minute, and the leakage current is required to be no more than 9 mA).

[0104] The 72 withstand voltage test method for insulating boots includes the following steps:

[0105] S1. Move the second conductive box 62 containing the completed insulating boot 7201 to one end above the insulating top plate 11 near the separation bracket 8.

[0106] S2. Remove the completed 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 completed insulating boot 7201 near the heel 722.

[0107] S3. Place the insulating boot 7202 to be tested into the inner cavity of the second conductive box 62 and press it onto the sponge layer 621.

[0108] S4. The completed insulating boot 7201 is pressed into the separation bracket 8 in a V-shape, and the outer wall of the heel 722 is pressed into the first absorbent sleeve 83.

[0109] S5. Rotate the completed insulating boot 7201 until the skirt opening 721 is set diagonally 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 adhering to the bottom surface of the completed insulating boot 7201 first seeps into the first water-absorbing sleeve 83 and the second water-absorbing sleeve 84, then adheres to the surface of the column 81 and flows downward until it drips into the water collection tank 13.

[0110] S6. Move the second conductive box 62 to a position below the conductive pole 4.

[0111] S7. Move the conductive rod 4 downwards until it is inserted into the inner cavity of the insulating boot 7202 to be tested, and the bottom end of the conductive rod 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 rod 4.

[0112] S8. Power the conductive pole 4 and apply a test voltage to the insulating boot 7202 to be tested (for example, for a Class 4 insulating boot 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).

[0113] The first conductive box 61, the second conductive box 62, and the voltage plate 5 are all made of ferrous metal materials (such as No. 45 steel), thus possessing excellent conductivity.

[0114] The present invention has a simple structure and reliable function. When the first conductive box 61 is pressed onto the voltage-conducting plate 5, it can conduct electricity and is used to form the circuit required for the withstand voltage test of the insulating glove 71. When the second conductive box 62 is pressed onto the voltage-conducting plate 5, it can conduct electricity and is used to form the circuit required for the withstand voltage test of the insulating boot 72. When the two are replaced, there is no need to install or remove the corresponding wires, thereby reducing the operation steps of the user and improving the test efficiency.

[0115] The user can press the insulating boot 72 onto the separation bracket 8 with one hand to pour out the steel ball 622 inside (the other hand can be used for other operations), while the method of drying with a cloth requires the user to use both hands (one hand to hold the insulating boot 72 and the other hand to hold the cloth). Therefore, the present invention has greater ease of operation.

Claims

1. An insulation product withstand voltage test device, characterized by: It comprises a workbench (1), an insulating column (2), a cross brace (3), a conductive column (4), a conductive pressure plate (5) and a box assembly (6); The workbench (1) comprises an insulating top plate (11), the bottom end of the insulating column (2) is connected with the insulating top plate (11), and the top end is connected with the cross brace (3); the conductive column (4) is cross-connected with the cross brace (3), and the conductive column (4) can be vertically moved and locked; the conductive pressure plate (5) is installed on the upper surface of the insulating top plate (11) and located below the conductive column (4); The box assembly (6) comprises a first conductive box (61) for accommodating an insulating glove (71) and a second conductive box (62) for accommodating an insulating boot (72); the first conductive box (61) can be crimped on the conductive pressure plate (5); the second conductive box (62) can be crimped on the conductive pressure plate (5); The bottom end of the conductive column (4) can be soaked in the first conductive liquid (611) in the inner cavity of the insulating glove (71), and the middle and lower part of the outer side wall of the insulating glove (71) can be soaked in the second conductive liquid (612) in the inner cavity of the first conductive box (61); The bottom end of the conductive column (4) can be in contact with the steel ball (622) in the inner cavity of the insulating boot (72), the bottom surface of the insulating boot (72) can be crimped on the sponge layer (621) in the inner cavity of the second conductive box (62), and the third conductive liquid (623) is arranged in the sponge layer (621); It also comprises a separation support (8) arranged at the side of the insulating top plate (11) and used for avoiding the contact between the steel ball (622) and the third conductive liquid (623); When the outer side wall of the heel (722) of the tested insulating boot (7201) is crimped on the separation support (8), the steel ball (622) can roll out through the obliquely downward arranged skirt opening (721) and fall into the inner cavity of the to-be-tested insulating boot (7202), and the third conductive liquid (623) at the bottom surface position of the tested insulating boot (7201) can be adsorbed by the separation support (8) and flow downward along the separation support (8), so that the steel ball (622) is prevented from rusting due to the contact with the third conductive liquid (623); The separation support (8) is provided with an arc-shaped clamping groove (801), and the outer side wall of the heel (722) of the tested insulating boot (7201) can be adaptively clamped in the arc-shaped clamping groove (801); The separation support (8) comprises a column (81), an arc-shaped support rod (82), a first water absorption sleeve (83) and a second water absorption sleeve (84); the arc-shaped support rod (82) is fixedly connected with the top of the column (81) in a Y-shaped manner, the first water absorption sleeve (83) is detachably installed on the outer periphery of the arc-shaped support rod (82), and the second water absorption sleeve (84) is detachably installed on the outer periphery of the top of the column (81); the bottom end of the first water absorption sleeve (83) is crimped with the top end of the second water absorption sleeve (84). The third conductive liquid (623) squeezed out of the first water absorption sleeve (83) can enter the second water absorption sleeve (84), and the water content of the compressed part of the first water absorption sleeve (83) decreases after rebounding, so that the third conductive liquid (623) can be prevented from splashing into the inner cavity of the to-be-tested insulating boot (7202) when the next completed test insulating boot (7201) is pressed against the first water absorption sleeve (83).

2. The insulation product withstand voltage test device according to claim 1, characterized in that: The side wall of the first water absorption sleeve (83) is provided with a first cutting seam (831) capable of being opened and closed along the axial direction, and the middle part of the first cutting seam (831) is provided with a containing hole (832) capable of containing the top end of the column (81); the side wall of the second water absorption sleeve (84) is provided with a second cutting seam (841) capable of being opened and closed along the axial direction.

3. The insulation product withstand voltage test device according to claim 2, characterized in that: The arc-shaped clamping groove (801) is arranged on the upper surface of the first water absorption sleeve (83).

4. The insulation product withstand voltage test apparatus according to claim 3, characterized by: The bottom end of the second water absorption sleeve (84) is provided with an inverted conical surface (843).

5. The insulation product withstand voltage test apparatus according to claim 4, characterized by: The separation support (8) further comprises a water guide connecting block (85) in the shape of a parallelogram; the first connecting side wall (851) of the water guide connecting block (85) is arranged obliquely upward and fixedly connected with the outer side wall of the workbench (1), and the second connecting side wall (852) of the water guide connecting block (85) is arranged obliquely downward and fixedly connected with the bottom end side wall of the column (81).

6. The insulation product withstand voltage test apparatus according to claim 5, characterized by: The bottom end of the column (81) is provided with a water collecting tank (13) for containing the third conductive liquid (623).

7. The insulation product withstand voltage test apparatus according to claim 6, characterized by: The side wall of the workbench (1) is provided with a box body support (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 inserted into the inner cavity of the second conductive box body (62).

8. A method of testing the dielectric strength of an insulation product, characterized by, The method comprises the following steps: S1, moving the second conductive box body (62) provided with the completed test insulating boot (7201) to one end thereof located above the insulating top plate (11) and close to the separation support (8); S2, taking out the completed test insulating boot (7201) from the inner cavity of the second conductive box body (62) and rotating it to a V-shaped shape, so that the steel ball (622) rolls to the end of the inner cavity of the completed test insulating boot (7201) close to the heel (722); S3, placing the to-be-tested insulating boot (7202) in the inner cavity of the second conductive box body (62) and pressing it on the sponge layer (621); S4, pressing the completed test insulating boot (7201) in a V-shaped shape on the separation support (8), and pressing the outer side wall of the heel (722) on the first water absorption sleeve (83). S5, rotate the test completed insulating boots (7201), to the skirt edge mouth (721) obliquely downward, and the steel ball (622) through the skirt edge mouth (721) roll out and fall into the inner cavity of the to-be-tested insulating boots (7202); in the process, the third conductive liquid (623) adhered to the bottom surface of the test completed insulating boots (7201) first penetrates into the first water absorbing sleeve (83) and the second water absorbing sleeve (84), and then adheres to the surface of the stand column (81) and flows downward to drip into the water collecting tank (13); S6, move the second conductive box (62) to be located below the conductive stand column (4); S7, the conductive stand column (4) moves downward to be inserted into the inner cavity of the to-be-tested insulating boots (7202), and the bottom end of the conductive stand column (4) is in contact with the steel ball (622) located in the inner cavity of the to-be-tested insulating boots (7202); S8, power supply to the conductive stand column (4), and voltage is applied to the to-be-tested insulating boots (7202).

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