Insulation and voltage resistance test device

Abstract

The invention discloses an insulation and voltage resistance test device, and belongs to the technical field of insulation tests. The device comprises a power supply mechanism, a detection mechanism, a plurality of insulation sealing test boxes and a gas storage mechanism. The power supply mechanism is provided with a plurality of output electrodes, the plurality of output electrodes respectively penetrate through different insulation sealing test boxes in a sealing manner, and the output electrodes are used for being connected with an insulation part to be tested; the detection mechanism is provided with a plurality of input electrodes, the plurality of input electrodes respectively penetrate through different insulation sealing test boxes in a sealing manner, and the input electrodes are used for being connected with an insulation part to be detected; the insulation sealing test box is in sealing communication with the gas storage mechanism, and the insulation sealing test box is used for placing a to-be-tested insulation part. According to the invention, the plurality of to-be-tested insulating parts are not mutually influenced, and the condition that the to-be-tested insulating parts face a gas factor in practical application is fully considered, so that the test accuracy and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of technical insulation testing, and in particular to an insulation withstand voltage testing device. Background Art

[0002] Insulation refers to a safety measure that uses non-conductive materials to isolate or wrap charged bodies to protect against electric shock. Good insulation is crucial to ensure the safe operation of electrical equipment and lines and prevent personal electric shock accidents. Therefore, during the production and processing of insulating parts, it is necessary to test the insulation performance of insulating parts. At present, the insulation performance of insulating parts is usually tested by insulation withstand voltage test. The insulation withstand voltage test refers to applying a certain high voltage to the insulating part to be tested and maintaining it for a certain period of time to verify the ability of the insulating part to be tested to withstand high voltage, thereby ensuring the safe use of the insulating parts.

[0003] At present, for the withstand voltage test of insulating parts, the insulating parts to be tested are directly placed on the insulating test bench for testing; some are placed in the same test chamber for testing, but the test is conducted directly without considering the environmental gas factors of the insulating parts. The multiple insulating parts to be tested are easy to affect each other during the test process and the environmental gas factors are not added in the test, so the test accuracy is low; some consider directly testing with the environmental gas factors, but only one insulating part to be tested can be tested at a time, so the test efficiency is low. Summary of the invention

[0004] The invention provides an insulation withstand voltage test device for solving the problems of low accuracy and low efficiency in insulation tests of multiple insulation parts.

[0005] An embodiment of the present invention provides an insulation withstand voltage test device, including a power supply mechanism, a detection mechanism, a plurality of insulation sealing test boxes and a gas storage mechanism;

[0006] The power supply mechanism has a plurality of output electrodes, and the plurality of output electrodes are respectively and sealedly arranged in different insulation sealing test boxes, and the output electrodes are used to be connected to the insulation part to be tested;

[0007] The detection mechanism has a plurality of input electrodes, and the plurality of input electrodes are respectively and sealedly arranged in different insulating sealing test boxes, and the input electrodes are used to be connected to the insulating member to be tested;

[0008] The insulation sealing test box is in sealing communication with the gas storage mechanism, and the insulation sealing test box is used for placing the insulation parts to be tested.

[0009] In one of the embodiments, the insulation withstand voltage test device further includes a branch rack;

[0010] The power supply mechanism comprises a power supply unit, a plurality of output wires and a plurality of output electrodes, wherein the output electrodes are connected to the power supply unit via the output wires;

[0011] A plurality of the output wires are passed through the branch wire rack, one end of the plurality of the output wires away from the power supply unit extends out of the branch wire rack, and a plurality of the output electrodes are vertically placed in different insulating sealed test boxes.

[0012] In one embodiment, the insulation sealing test box includes a box body with an opening on one side and a box cover;

[0013] The box cover is sealed on the box body, and a through hole is provided on the box cover. The output electrode passes through the through hole into the insulating sealing test box, and the through hole is sealed and connected with the output electrode.

[0014] In one embodiment, an insulating sleeve is installed in the through hole, and the insulating sleeve has a connecting channel for the output electrode or the output wire to pass through. The inner wall of the connecting channel is provided with a sealing portion, and the sealing portion is used to keep the insulating sleeve and the output electrode or the output wire sealed.

[0015] In one embodiment, the gas storage mechanism includes an air storage box, a plurality of air intake pipes and a plurality of pressure pumps;

[0016] The air storage box is connected to the plurality of insulating and sealing test boxes through a plurality of air intake pipes, and each of the air intake pipes is equipped with the pressure pump.

[0017] In one embodiment, there are multiple air storage boxes, the multiple air storage boxes store different gases, and each of the air storage boxes is connected to the air intake pipe via an on-off valve for controlling the gas flow to the corresponding air storage box.

[0018] In one of the embodiments, a stretching mechanism is also installed in the insulation sealing test box, and the stretching mechanism is used to stretch or compress the insulation component to be tested.

[0019] In one embodiment, both sides of the insulation sealing test box have stretching holes;

[0020] The stretching mechanism comprises two stretching driving members and two clamping members;

[0021] The two stretching driving members are arranged on both sides of the insulation sealing test box, and the driving lever of the stretching driving member is movably extended into the insulation sealing test box through the stretching through hole, and the driving lever is sealed and connected to the stretching through hole;

[0022] The two clamping members are fixedly mounted on the driving lever, and the two stretching driving members are used to drive the two clamping members to move closer to or farther away from each other.

[0023] In one of the embodiments, the detection mechanism includes the input electrode, input wire, AC milliammeter, overvoltage protection component and overcurrent protection component;

[0024] The input electrode is connected to the AC milliammeter via the input wire;

[0025] The overvoltage protection component is installed in parallel on the AC milliammeter, and the overcurrent protection component is installed in series between the input electrode and the AC milliammeter.

[0026] In one embodiment, both the output electrode and the input electrode are detachably connected with insulating caps.

[0027] It can be seen from the above technical solutions that the present invention has the following advantages:

[0028] The present embodiment provides an insulation withstand voltage test device, including a power supply mechanism, a detection mechanism, a plurality of insulation sealing test boxes and a gas storage mechanism; since the output electrodes and the input electrodes are sealed and penetrated in the plurality of insulation sealing test boxes, different insulation components to be tested can be placed in different insulation sealing test boxes for testing without affecting each other; and since the plurality of insulation sealing test boxes are all sealed and connected with the gas storage mechanism, the insulation sealing test boxes can be tested in combination with gas factors. In the present embodiment, the plurality of insulation components to be tested are not affected by each other, and the situation in which the insulation components to be tested face gas factors in actual application is fully considered, thereby improving the accuracy and efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A schematic diagram of the overall structure of an insulation withstand voltage test device provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the connection structure between the insulation sealing test box and the gas storage mechanism provided in an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the connection structure between the insulation sealing test box and the stretching mechanism provided in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of an output wire structure provided in an embodiment of the present invention.

[0034] Reference numerals:

[0035] 1. Power supply mechanism; 10. Output electrode; 11. Output wire; 12. Power supply unit; 2. Detection mechanism; 20. Input wire; 21. AC milliammeter; 3. Insulation sealing test box; 30. Box body; 31. Box cover; 32. Insulation sleeve; 33. Air inlet connector; 34. Air outlet connector; 4. Air storage mechanism; 40. Air storage box; 41. Air inlet pipe; 42. Pressure pump; 43. Pressure sensor; 5. Stretching mechanism; 50. Stretching drive member; 51. Clamping member; 52. Insulation sealing ring; 53. Insulation support frame; 6. Insulation platform; 60. Branch frame. DETAILED DESCRIPTION

[0036] The embodiment of the present invention provides an insulation withstand voltage test device, which is used to solve the technical problems of low accuracy and low efficiency in insulation testing of multiple insulating parts.

[0037] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 4 The present invention provides an insulation withstand voltage test device, comprising a power supply mechanism 1, a detection mechanism 2, a plurality of insulation sealing test boxes 3 and a gas storage mechanism 4;

[0039] The power supply mechanism 1 has a plurality of output electrodes 10, and the plurality of output electrodes 10 are respectively and sealedly arranged in different insulating sealing test boxes 3, and the output electrodes 10 are used to connect with the insulating member to be tested;

[0040] The detection mechanism 2 has a plurality of input electrodes, which are respectively and sealedly disposed in different insulating sealing test boxes 3, and the input electrodes are used to connect with the insulating member to be tested;

[0041] The insulation sealing test box 3 is in sealing communication with the gas storage mechanism 4 , and the insulation sealing test box 3 is used for placing the insulation parts to be tested.

[0042] The working principle of the device of this embodiment is: multiple insulating parts to be tested are placed in different insulation sealing test boxes 3, and then the output electrode 10 is placed on the inner wall of the insulating part to be tested, and the input electrode is placed on the outer wall of the insulating part to be tested, and then the gas used to simulate the use environment air is introduced into the insulation sealing test box 3 by using the gas storage mechanism 4, the power supply mechanism 1 and the detection mechanism 2 are started, and the multiple insulating parts to be tested are subjected to insulation withstand voltage test under the action of the output electrode 10 and the gas, and the input electrode of the detection mechanism 2 obtains the test data of the insulating part to be tested.

[0043] Compared with the prior art, this solution has the following advantages: First, multiple insulating parts to be tested are placed in different insulating sealing test boxes 3 for testing, and the insulation tests of the multiple insulating parts to be tested are independent of each other, avoiding the problem of mutual influence when multiple parts to be tested are tested in the same container, thereby improving the accuracy of the insulation withstand voltage test; Second, the insulation test of the insulating parts to be tested can be carried out in a specific gas environment, thereby simulating the insulation withstand voltage of the insulating parts to be tested in an actual environment, thereby improving the simulation accuracy of the insulation withstand voltage test.

[0044] In this embodiment, the insulating part to be tested can be an insulating part for users to wear, such as insulating gloves and insulating boots, or an insulating part for power equipment, such as insulating rods, insulating pads, insulating covers, and insulating sleeves 32. When performing an insulation withstand voltage test on insulating gloves, insulating boots, etc., the output electrode 10 is usually extended into the inner side of the insulating part to be tested and electrically connected to its inner wall, while the input electrode is electrically connected to the outer wall of the insulating part to be tested.

[0045] In a specific embodiment, Figure 1 As shown, the insulation withstand voltage test device further includes an insulation platform 6, and multiple insulation sealing test boxes 3 are placed side by side and spaced apart on the insulation platform 6. A detection mechanism 2 is installed below the insulation platform 6, and a power supply mechanism 1 is arranged on the side of the insulation platform 6. The arrangement of the insulation platform 6 can avoid leakage or other situations in the multiple insulation sealing test boxes 3, thereby ensuring the insulation during the test and ensuring the safety of the test.

[0046] As a possible example, Figure 1As shown, a structure that can be realized by a power supply mechanism 1 is provided. The power supply mechanism 1 includes a power supply unit 12, a plurality of output wires 11 and a plurality of output electrodes 10. The output electrodes 10 are connected to the power supply unit 12 through the output wires 11. The plurality of output wires 11 are inserted into a branch rack 60. One end of the plurality of output wires 11 away from the power supply unit 12 extends out of the branch rack 60. The plurality of output electrodes 10 are vertically placed in different insulating and sealed test boxes 3. The plurality of output wires 11 are fixedly raised by the branch rack 60. Then, one end of the output wire 11 connected to the output electrode 10 extends out of the branch rack 60 and is vertically placed on the insulating and sealed test box 3. After the output electrode 10 is connected to the output wire 11, it can be vertically placed in different insulating and sealed test boxes 3. The output electrode 10 that is vertically placed can more conveniently contact the interior or inner wall of the insulating unit to be tested.

[0047] In this embodiment, the power supply 12 is a high-voltage power supply. As for the voltage selection of the high-voltage power supply, those skilled in the art can make a selection according to the actual requirements of the test.

[0048] In this embodiment, if Figure 4 As shown, the output wire 11 is a spring-type wire that can be retracted to electrically connect to the insulating member to be tested. Of course, the output wire 11 can also be an ordinary straight wire, and those skilled in the art can choose according to actual needs.

[0049] In this embodiment, the input electrode is detachably connected with an insulating cap. When a test is required, the insulating cap is removed. When the test is not required or after the test is completed, the insulating cap is put on the input electrode and the output electrode 10, thereby further ensuring safety.

[0050] In a specific embodiment, Figure 1 and Figure 2 As shown, a structure is further provided in which the output electrode 10 is sealed and placed vertically in the insulation sealing test box 3. The insulation sealing test box 3 includes a box body 30 with an opening on one side and a box cover 31; the box cover 31 is sealed and covered on the box body 30, and a through hole is provided on the box cover 31. The output electrode 10 penetrates into the insulation sealing test box 3 through the through hole, and the through hole is sealed and connected with the output electrode 10. In specific implementation, the insulating part to be tested is placed in the box body 30, and the output electrode 10 is sealed and penetrated on the box cover 31, and then the box cover 31 and the box body 30 are sealed to form a sealed cavity. The output electrode 10 can provide a test current to the insulating part to be tested, and ensure the insulation sealing in the insulation sealing test box 3.

[0051] In this embodiment, if Figure 2As shown, an air inlet connector 33 for connecting to the air storage mechanism 4 and an air outlet connector 34 for exhausting air are provided on the side wall of the box body 30; an annular groove is provided on the peripheral edge of the opening of the box body 30, and an annular clip matching the shape of the annular groove is provided on the box cover 31. The annular clip is inserted into the annular groove, and a sealing ring is elastically clamped between the annular clip and the annular groove, thereby achieving sealing between the box body 30 and the box cover 31.

[0052] In a specific embodiment, Figure 2 As shown, a feasible structure for sealing and insulating the output electrode 10 and the box cover 31 is further provided, an insulating sleeve 32 is installed in the through hole, the insulating sleeve 32 has a connecting channel for the output electrode 10 or the output wire 11 to penetrate, and the inner wall of the connecting channel is provided with a sealing portion, which is used to keep the insulating sleeve 32 and the output electrode 10 or the output wire 11 sealed, and the sealing portion can be an elastic sealing ring or other sealing structure, which can ensure its sealing when the output electrode 10 or the output wire 11 passes through.

[0053] In this embodiment, the output electrode 10 includes a power clamp and an electrode rod. The power clamp is connected to the power supply device through an output wire. One end of the electrode rod is clamped on the power clamp, and the other end can pass through the insulating sleeve 32 and be electrically connected to the insulating part to be tested; a contact portion is also provided at the end of the electrode rod away from the power clamp.

[0054] In a specific embodiment, the output electrode 10 further provides an automatic tripping device, which is arranged between the output wire and the power clamp. When the leakage current reaches a set value, the automatic tripping device is used to trip the output wire and the power clamp to cut off the power to the output electrode. It should be pointed out that the automatic tripping device is a circuit breaker. As long as the circuit breaker can achieve overload protection, it can be selected by technical personnel in this field and is not limited here.

[0055] In a specific embodiment, a plurality of isolated insulating wire channels are formed in the insulating bracket, and a plurality of output wires 11 are respectively inserted into the plurality of insulating wire channels. The provision of the insulating wire channels can avoid mutual influence between the plurality of output wires 11 .

[0056] In this embodiment, if Figure 1 As shown, the shape of the branch frame 60 can be an inverted L-shaped bracket. The branch frame 60 can be supported independently on the insulating plane, or can be fixed on the side of the insulating platform 6. As long as it is ensured that the branch frame 60 can raise the output wire 11 so that the output electrode 10 can be placed vertically in the insulating sealing test box 3, technical personnel in this field can make any choice.

[0057] As a possible example, Figure 2As shown, a structure that can be realized by the gas storage mechanism 4 is provided, and the gas storage mechanism 4 includes an air storage box 40, multiple air inlet pipes 41 and multiple pressure pumps 42; the insulation sealing test box 3 is provided with an air inlet joint 33, and the air inlet joint 33 is sealed and connected to the air inlet pipe 41 through a flange, and the multiple air inlet pipes 41 are connected to the air outlet pipe of the air storage box 40, and each air inlet pipe 41 is installed with a pressure pump 42, and the air storage box 40 transports the gas to the insulation sealing test box 3 through the air inlet pipe, wherein the pressure pump 42 can provide power and pressurize the flow of the gas to change the air pressure of the insulation sealing test box 3, so that multiple insulating parts to be tested can be tested under different air pressures.

[0058] In a specific application scenario, multiple insulating sealing test boxes 3 are tested under the same original air pressure, and then multiple pressure pumps 42 are used to apply consistent pressure power, so that multiple insulating parts to be tested can be tested under the same pressure environment; of course, certain pressure pumps 42 can also be individually controlled to be under a certain specific pressure power, so that multiple insulating parts to be tested are tested under different pressure environments, so as to detect the insulation performance of the insulating parts to be tested under the same gas, the same electricity, and different pressure environments.

[0059] In a specific embodiment, there are multiple gas storage boxes 40, and the storage gases of the multiple gas storage boxes 40 are different. The gas outlet pipe of each gas storage box 40 is connected to an on-off valve for controlling the gas on and off of the corresponding gas storage box 40. The gas outlet pipe of the gas storage box 40 is further connected to multiple insulating and sealing test boxes 3. Different gases can be stored in the multiple gas storage boxes 40. For example, one gas storage box 40 is filled with an inert gas such as nitrogen, and another gas storage box 40 is filled with an insulating gas such as sulfur hexafluoride. In specific implementation, when it is necessary to control multiple insulating and sealing test boxes 3 to be in a nitrogen gas environment, the on-off valve of the gas storage box 40 filled with nitrogen is controlled to be opened so that the nitrogen fills each insulating and sealing test box 3. The control of other gases is the same, which will not be elaborated here.

[0060] As a possible example, Figure 1 As shown, an achievable structure of the detection mechanism 2 is further provided. The detection mechanism 2 includes an input electrode, an input wire 20 and an AC milliammeter 21. The AC milliammeter 21 is connected to the input electrode through the input wire 20. The input wire 20 penetrates the wall of the insulating sealing test box 3 and is electrically connected to the input electrode. The input electrode is sealed on the inner wall of the insulating sealing test box 3. After the AC milliammeter 21 is electrically connected to the input electrode, it is used to detect the leakage current of the insulating component to be tested.

[0061] In this embodiment, the input electrode is detachably connected with an insulating cap. When a test is required, the insulating cap is removed. When the test is not required or after the test is completed, the insulating cap is put on the input electrode and the output electrode 10, thereby further ensuring safety.

[0062] In a specific embodiment, the detection mechanism 2 further includes a protection component for protecting the AC milliammeter 21 to improve safety, and the protection component includes an overvoltage protection component and an overcurrent protection component; wherein the overvoltage protection component is a discharge tube, which is connected in parallel to the AC milliammeter 21 to achieve overvoltage protection; the overcurrent protection component is a resettable fuse, which is connected in series between the input electrode and the AC milliammeter 21 to achieve overcurrent protection.

[0063] As a possible example, it can be seen from the above that the insulating part to be tested may be an insulating glove, an insulating boot, etc., which may be deformed during wearing or use. Figure 3 As shown, a stretching mechanism 5 is provided, and the stretching mechanism 5 is used to stretch or compress the insulating member to be tested to detect the insulation performance of the insulating member to be tested in a stretched state.

[0064] In a specific embodiment, Figure 3 As shown, both sides of the insulation sealing test box 3 are provided with stretching through holes; the stretching mechanism 5 includes two stretching driving members 50 and two clamping members 51; the two stretching driving members 50 are arranged on both sides of the insulation sealing test box 3, and the two stretching driving members 50 can be respectively aligned with the stretching through holes on both sides through the insulating support frame 53, and the driving lever of the stretching driving member 50 can be movably extended into the insulation sealing test box 3 through the stretching through hole, and the driving lever is sealed and connected with the stretching through hole; the two clamping members 51 are fixedly installed on the driving lever, and the two stretching driving members 50 are used to drive the two clamping members 51 to move closer to or away from each other. In the specific implementation, the two stretching driving members 50 drive the two clamping members 51 to move closer to each other to clamp the insulating member to be tested.

[0065] In this embodiment, if Figure 3 As shown, an insulating sealing ring 52 is further provided between the driving lever of the stretching driving member 50 and the stretching through hole of the insulating sealing test box 3. The insulating sealing ring 52 is used to ensure the insulating sealing performance of the driving lever and the stretching through hole to prevent the test device from damaging the external environment.

[0066] In this embodiment, if Figure 3 As shown, the stretching driving member 50 is a hydraulic cylinder, and the hydraulic push rod of the hydraulic cylinder extends into the insulating sealing test box 3 through the stretching through hole. In specific implementation, the cooperation of the two hydraulic push rods can push the two clamping members 51 to clamp the insulating member to be tested, so that the insulating member to be tested is stretched to detect its insulation performance in the stretched state, wherein the hydraulic push rod of the hydraulic cylinder is insulated to ensure the insulation during the test.

[0067] In this embodiment, if Figure 3As shown, the clamping member 51 is a clamping jaw, which can clamp both sides of the insulating member to be tested, and the clamping jaw can be driven by the stretching hydraulic cylinders on both sides to stretch the insulating member to be tested, so as to detect the insulation performance of the insulating member to be tested in a stretched state. Similarly, the clamping jaw is also insulated to ensure the insulation during the test.

[0068] As a possible example, in order to improve the intelligence level of the equipment, it also includes a control mechanism, which includes a controller, a pressure sensor 43, a tension sensor and an automatic tripping device. The controller is signal-connected with the pressure sensor 43, the tension sensor, the automatic tripping device and the detection mechanism 2. The pressure sensor 43 is arranged on the air intake pipe 41 of the air storage mechanism 4 to detect the intake pressure; the tension sensor is arranged on the stretching drive 50 to measure the real-time tension of the stretching drive 50 on the insulating member to be tested; the automatic tripping device is arranged on the output electrode.

[0069] During specific implementation, the controller can receive in real time the current data of the leakage of the insulating part to be tested, the pressure data of the pressure sensor 43, and the tension data of the tension sensor detected by the detection mechanism 2. The controller obtains the change value of the leakage current data with tension and the change value of the leakage current data with pressure based on the real-time pressure data of the pressure sensor 43, the real-time tension data, and the leakage current data, so as to further control the intake pressure and the applied tension to better detect the insulation performance of the insulating part to be tested under tension and under different gas pressures; and when the detection device detects that the leakage current of the insulating part to be tested reaches the set value, the controller controls the automatic tripping device to trip to cut off the power to the output electrode to avoid short circuit and ensure safety.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0071] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. An insulation withstand voltage test device, characterized in that: It includes a power supply mechanism, a detection mechanism, a plurality of insulation and sealing test chambers and a gas storage mechanism; The power supply mechanism has a plurality of output electrodes, and the plurality of output electrodes are respectively and sealedly arranged in different insulation sealing test boxes, and the output electrodes are used to be connected to the insulation part to be tested; The detection mechanism has a plurality of input electrodes, and the plurality of input electrodes are respectively and sealedly arranged in different insulating sealing test boxes, and the input electrodes are used to be connected to the insulating member to be tested; The insulation sealing test box is in sealing communication with the gas storage mechanism, and the insulation sealing test box is used for placing the insulation parts to be tested.

2. The insulation withstand voltage test device according to claim 1, characterized in that: The insulation withstand voltage test device also includes a branch rack; The power supply mechanism comprises a power supply unit, a plurality of output wires and a plurality of output electrodes, wherein the output electrodes are connected to the power supply unit via the output wires; A plurality of the output wires are passed through the branch wire rack, one end of the plurality of the output wires away from the power supply unit extends out of the branch wire rack, and a plurality of the output electrodes are vertically placed in different insulating sealed test boxes.

3. The insulation withstand voltage test device according to claim 2, characterized in that: The insulation sealing test box comprises a box body with an opening on one side and a box cover; The box cover is sealed on the box body, and a through hole is provided on the box cover. The output electrode passes through the through hole into the insulating sealed test box, and the through hole is sealed and connected with the output electrode or the output wire.

4. The insulation withstand voltage test device according to claim 3, characterized in that: An insulating sleeve is installed in the through hole, and the insulating sleeve has a connecting channel for the output electrode or the output wire to pass through. The inner wall of the connecting channel is provided with a sealing part, and the sealing part is used to keep the insulating sleeve and the output electrode or the output wire sealed.

5. The insulation withstand voltage test device according to claim 1, characterized in that: The gas storage mechanism includes an air storage box, a plurality of air intake pipes and a plurality of pressure pumps; The air storage box is connected to the plurality of insulating and sealing test boxes through a plurality of air intake pipes, and each of the air intake pipes is equipped with the pressure pump.

6. The insulation withstand voltage test device according to claim 5, characterized in that: There are multiple gas storage boxes, and the gases stored in the multiple gas storage boxes are different. An on-off valve for controlling the gas on and off of the corresponding gas storage box is connected between each gas storage box and the air intake pipeline.

7. The insulation withstand voltage test device according to claim 1, characterized in that: A stretching mechanism is also installed in the insulation sealing test box, and the stretching mechanism is used to stretch or compress the insulation part to be tested.

8. The insulation withstand voltage test device according to claim 7, characterized in that: Both sides of the insulation sealing test box are provided with stretching through holes; The stretching mechanism comprises two stretching driving members and two clamping members; The two stretching driving members are arranged on both sides of the insulation sealing test box, and the driving lever of the stretching driving member is movably extended into the insulation sealing test box through the stretching through hole, and the driving lever is sealed and connected to the stretching through hole; The two clamping members are fixedly mounted on the driving lever, and the two stretching driving members are used to drive the two clamping members to move closer to or farther away from each other.

9. The insulation withstand voltage test device according to claim 1, characterized in that: The detection mechanism includes the input electrode, input wire, AC milliammeter, overvoltage protection component and overcurrent protection component; The input electrode is connected to the AC milliammeter via the input wire; The overvoltage protection component is installed in parallel on the AC milliammeter, and the overcurrent protection component is installed in series between the input electrode and the AC milliammeter.

10. The insulation withstand voltage test device according to claim 1, characterized in that: The output electrode and the input electrode are both detachably connected with insulating caps.

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