Insulation and voltage resistance test device

Abstract

The utility model belongs to the field of withstand voltage test of safety tools, and provides an insulation withstand voltage test device, which comprises a table top arranged on a cabinet body; the back plate is arranged on the cabinet body, a lifting mechanism is arranged on the back plate, and an electrode plate is installed at the lifting end of the lifting mechanism; the top plate is arranged at the top end of the back plate, a high-voltage wire branch pipe assembly is arranged on the top plate, a high-voltage shell assembly is arranged at the output end of the high-voltage wire branch pipe assembly and comprises an automatic tripping system, the automatic tripping system comprises a body and a telescopic rod arranged on the body, and a conductive spring is hung at the outer end of the telescopic rod. The bottom end of the conductive spring is fixedly connected with the lifting end of the lifting mechanism, and the bottom end of the conductive spring is electrically connected with the electrode plate. By arranging the lifting mechanism, the device can automatically put down the electrode plate to start the test during the test, and can automatically lift up the electrode plate after the test is completed. Wherein the automatic tripping system is connected with the electrode plate through a conductive spring, so that manual tripping can be realized, and automatic tripping can also be realized.

Description

Technical Field

[0001] The utility model belongs to the field of withstand voltage tests for safety tools, and particularly relates to an insulation withstand voltage test device. Background Art

[0002] In the periodic withstand voltage tests of indoor power equipment and safety tools for live working, due to the large number of batches and quantities of tools or equipment to be tested every day, and the relatively closed test environment, during the process of withstand voltage test detection, ozone and other harmful gases will be continuously generated and input into the test environment, resulting in the pollution of the test environment air. Long-term exposure to such a harsh environment poses a great harm to human health. And after each sample test is completed, before the test ozone and other harmful gases have dissipated, the tester needs to immediately go to check the sample and perform the sample replacement operation. In this way, when replacing the test sample, the concentration of harmful gases contacted by the human body is much higher than the indoor average value.

[0003] In addition, when the existing laboratories conduct tests on power equipment and safety tools for live working, the following problems also exist:

[0004] The absence of a test harmful gas treatment device or untimely treatment will result in a relatively high concentration of harmful gases in the indoor test;

[0005] For traditional insulation withstand voltage test benches, only one insulation test piece can be tested at a time. And after each test, it is necessary to manually move the test electrode to replace the sample of the insulation withstand voltage test piece. The electrode plate is heavy, and frequent sample replacement and long-term manual handling of the test electrode result in a large working intensity, affecting the test efficiency;

[0006] Before the test, it is necessary to use a ruler to position the relative positions of the electrode and the withstand voltage test piece. After each test, when replacing the next withstand voltage test piece, repositioning is required. Moreover, the positioning is difficult, the positioning data is unstable, extremely affecting the test efficiency and the stability of test parameters;

[0007] During the test process, if one insulation withstand voltage test piece breaks down, it will affect the entire test (each breakdown requires stopping the test and going to the test station to check one by one to see which station has a breakdown). And frequent breakdowns cannot be tripped in time, and the breakdown impact current is very large, which also causes varying degrees of damage to the test transformer and voltage divider;

[0008] The placement and selection of the test electrodes for the insulation withstand voltage test pieces in the laboratory are inconvenient, resulting in low test efficiency, unable to deliver the test samples in time within the time required by the customer, and causing customer complaints, affecting the laboratory's benefits. Content of the Utility Model

[0009] In view of the deficiencies in the prior art, the present utility model provides an insulation withstand voltage test device, which can solve the above technical problems.

[0010] To achieve the above object, the present utility model adopts the following technical solutions: An insulation withstand voltage test device, comprising:

[0011] A tabletop, disposed on the cabinet;

[0012] A backboard, disposed on the cabinet and located behind the tabletop, a lifting mechanism is provided on the backboard, and an electrode plate is installed at the lifting end of the lifting mechanism;

[0013] A top plate, disposed at the top of the backboard, a high-voltage branch pipe assembly is provided on the top plate, an output end of the high-voltage branch pipe assembly is provided with a high-voltage housing assembly, the high-voltage housing assembly includes an automatic tripping system, the automatic tripping system includes a body, a telescopic rod provided on the body, a conductive spring is hung on the outer end of the telescopic rod, the bottom end of the conductive spring is fixedly connected to the lifting end of the lifting mechanism, and the bottom end of the conductive spring is electrically connected to the electrode plate.

[0014] Preferably, the high-voltage housing assembly is installed below the top plate.

[0015] Preferably, a scale is provided on the tabletop.

[0016] Preferably, the tabletop is a stainless steel tabletop.

[0017] Preferably, a drawer is provided in the cabinet, and the drawer is used for placing test electrodes and storing soft electrodes.

[0018] Preferably, a sealed cavity is provided in the sealed cover behind the backboard, the sealed cavity is connected to an outdoor air extraction generating device through an air extraction pipeline, and a plurality of air extraction openings are provided on the backboard.

[0019] Preferably, the plurality of air extraction openings are arranged in a matrix.

[0020] Preferably, the lifting mechanism includes a push rod motor, a connecting rod, an extension arm, and a support arm. The push rod motor is installed on the backboard, the telescopic end of the push rod motor is fixed to the connecting rod, the extension arm is fixed to the connecting rod, the support arm is fixed to the extension arm, a spring connecting member is provided on the support arm, the bottom end of the conductive spring is fixed to the spring connecting member, and a strip hole is provided on the backboard, and the extension arm is inserted into the strip hole.

[0021] Preferably, the lifting mechanism further includes a guide rod and a sliding sleeve. The guide rod is installed on the backboard, the sliding sleeve is slidably sleeved on the guide rod, and the connecting rod is fixed to the sliding sleeve.

[0022] Preferably, a connection component is provided on the electrode plate. A screw rod is provided on the connection component. A return spring and a limiting cylinder are sleeved outside the screw rod. A end cap is provided at the top of the screw rod. The limiting cylinder is located between the return spring and the end cap. The limiting cylinder is fixed to the extension arm.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] 1. An insulation withstand voltage test device provided by the present utility model arranges a lifting mechanism, connects the lifting end of the lifting mechanism to the electrode plate. During the test, the electrode plate can be automatically lowered to start the test, and after the test is completed, the electrode plate can be automatically lifted. An automatic tripping system is arranged on the top plate. Each automatic tripping system can trip independently, and the automatic tripping system is connected to the electrode plate through a conductive spring, which can not only achieve manual tripping but also automatic tripping.

[0025] 2. An insulation withstand voltage test device provided by the present utility model makes the surface of the insulation withstand voltage test bench into a flat surface with a stainless steel plate, and a scale is drawn on the surface, which can quickly locate when replacing the test sample and improve the replacement efficiency of the test sample.

[0026] 3. An insulation withstand voltage test device provided by the present utility model makes a test electrode placement rack and a soft electrode storage drawer under the surface, which can protect the test electrode from damage, ensure the effectiveness of the test result, and avoid the damage of the electrode to the sample during detection.

[0027] 4. An insulation withstand voltage test device provided by the present utility model arranges an exhaust duct behind the back plate. The front end of the exhaust duct is led to the vicinity of the test area on the test bench through an exhaust port, and the rear end of the exhaust duct is directly connected to an outdoor exhaust generating device. Without affecting the test, the ozone and other harmful gases generated during the test are discharged from the source in a timely manner, protecting the test environment from being polluted by the harmful gases generated by the test, keeping the air in the test environment fresh, and ensuring the health of the detection personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional structural schematic diagram of an insulation withstand voltage test device provided by an embodiment of the present utility model;

[0029] Figure 2 is a front structural schematic diagram of an insulation withstand voltage test device provided by an embodiment of the present utility model;

[0030] Figure 3 is a three-dimensional structural schematic diagram of an insulation withstand voltage test device provided by an embodiment of the present utility model from another angle;

[0031] Figure 4 Schematic three-dimensional structure diagram of a conductive spring and its related parts of an insulation withstand voltage test device provided by an embodiment of the present invention;

[0032] Figure 5 Schematic side view structure diagram of a sealed cavity and its related parts of an insulation withstand voltage test device provided by an embodiment of the present invention;

[0033] Figure 6 Schematic top view structure diagram of a tabletop of an insulation withstand voltage test device provided by an embodiment of the present invention.

[0034] In the drawings, the list of components represented by each reference numeral is as follows:

[0035] 1, tabletop; 2, back plate; 3, lifting mechanism; 4, top plate; 5, electrode plate; 6, high-voltage branch pipe assembly; 7, high-voltage housing assembly; 8, conductive spring; 9, drawer; 10, sealed cavity; 11, exhaust duct; 12, exhaust generating device; 13, exhaust port; 14, screw; 15, return spring; 16, limiting cylinder; 17, connecting component; 301, push rod motor; 302, guide rod; 303, sliding sleeve; 304, connecting rod; 305, extension arm; 306, support arm; 307, spring connecting piece. Detailed implementation manners

[0036] The following further describes the present invention in detail with reference to specific embodiments, so that those skilled in the art can understand the present invention more clearly.

[0037] It should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" in the terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For those of ordinary skill in the art, the specific meanings of such terms in the present invention can be understood according to specific situations.

[0038] Embodiment 1

[0039] When performing the withstand voltage test on the insulation blanket, this embodiment provides an insulation withstand voltage test device. Refer to Figure 1-2 , including:

[0040] The tabletop 1 is arranged on the cabinet, and the cabinet is grounded through a grounding stud. The tabletop 1 can be made of a stainless steel plate to form a flat tabletop for placing the insulation blanket.

[0041] The back plate 2 is arranged on the cabinet and is located at the rear side of the tabletop 1. Multiple groups of lifting mechanisms 3 are provided on the back plate 2, and an electrode plate 5 is installed at the bottom of the lifting end of the lifting mechanism 3. The electrode plate 5 is the test electrode and is used to be in contact with and fully contact the insulation blanket.

[0042] The top plate 4 is disposed at the top end of the back plate 2. A high-voltage branch pipe assembly 6 is provided on the top plate 4. The output end of the high-voltage branch pipe assembly 6 is provided with a high-voltage housing assembly 7, and the high-voltage housing assembly 7 is installed below the top plate 4. The high-voltage housing assembly 7 includes multiple sets of automatic tripping systems, and the multiple sets of automatic tripping systems correspond to multiple sets of electrode plates 5 one by one. The automatic tripping system is located above the corresponding electrode plate 5.

[0043] The automatic tripping system includes a body and a telescopic rod disposed on the body. A conductive spring 8 is hung at the outer end of the telescopic rod. The bottom end of the conductive spring 8 is fixedly connected to the lifting end of the corresponding lifting mechanism 3. At the same time, the bottom end of the conductive spring 8 is electrically connected to the corresponding electrode plate 5 through a lead. The top end of the conductive spring 8 can be hung on the telescopic rod through a hook, so that the conductive spring 8 is in a vertically stretched state. If the telescopic rod expands or contracts, the hook will be separated from the telescopic rod, that is, the conductive spring 8 is separated from the telescopic rod.

[0044] In this embodiment, the high-voltage branch pipe assembly 6, the automatic tripping system, the conductive spring 8, and the electrode plate 5 are electrically connected in sequence. The high-voltage branch pipe assembly 6 is used to generate voltage to the electrode plate 5. Specifically, the high-voltage branch pipe assembly 6 may include a high-voltage output end and a transformer. The transformer is used to provide voltage to the high-voltage output end. The voltage of the high-voltage output end is generated to the electrode plate 5 through the automatic tripping system and the conductive spring 8 in sequence, and then a withstand voltage test can be performed on the insulating blanket.

[0045] In this embodiment, the automatic tripping system is a prior art. When a breakdown or other phenomena occur in the test sample, the current exceeds the preset current, and the telescopic rod expands or contracts, thereby realizing automatic tripping. And timely tripping can reduce the damage of the discharge current during breakdown to the test transformer or voltage divider, and improve the test efficiency and protect the test equipment.

[0046] That is to say, when a breakdown or other phenomena occur in the insulating blanket, the automatic tripping system can automatically disconnect the high voltage, so that each group of test channels are independent of each other. After disconnection, each group of test channels do not interfere with each other, ensuring the normal operation of the test.

[0047] According to needs, the high-voltage housing assembly 7 can be integrated with a measurement module for measuring parameters such as voltage and current, and a PLC controller for automatically setting various parameters such as test time and test voltage, which is convenient for performing a withstand voltage test on the test sample. The measurement module and the PLC controller are both prior arts.

[0048] According to needs, a discharge mechanism can also be provided on the cabinet body, which can realize automatic voltage reduction and ensure the safety of the test.

[0049] In summary, for the insulation withstand voltage test device provided in this embodiment, the insulation blanket is placed on the table 1, and then the electrode plate 5 is driven by the lifting mechanism 3 to descend until it contacts the insulation blanket. Then, the power supply is connected, and a voltage is generated to the electrode plate 5 through the high-voltage branch pipe assembly 6, so that the insulation blanket obtains the specified test voltage, and the test can be carried out. After the test is completed, the electrode plate 5 can be automatically lifted by the lifting mechanism 3.

[0050] Among them, multiple groups of electrode plates 5 and multiple groups of automatic tripping systems correspond one by one, enabling multi-station simultaneous operation; the electrode plate 5 and the automatic tripping system are connected by a spring 8, which can achieve both manual tripping and automatic tripping; through the lifting mechanism 3, the electrode plate 5 can be automatically lowered during the test and automatically lifted after the test is completed, reducing the work intensity of the inspectors and improving the inspection efficiency.

[0051] In order to improve the positioning efficiency of the insulation blanket on the table 1, in this embodiment, a scale can be drawn on the table 1, so that the insulation blanket can be quickly positioned when it is replaced, and the replacement efficiency of the test sample can be improved. For example, see Figure 6 , a horizontal scale and two vertical scales are provided on the table 1. The three scales together form two cross-shaped structures. The positions of the two cross-shaped structures correspond to the two groups of electrode plates 5. An insulation blanket can be placed in the central area of each of the two cross-shaped structures, and the insulation blanket can be quickly positioned through the scale on the scale.

[0052] In addition, the lifting and lowering of the electrode plate 5 are realized through the lifting mechanism 3, so that the plane coordinates of the electrode plate 5 on the table 1 always remain fixed. In this way, when replacing insulation blankets of different sizes, both the insulation blanket and the electrode plate 5 can be quickly positioned, ensuring the stability of the test parameters, and it can be seen at a glance whether the insulation blanket meets the standard requirements.

[0053] In order to conveniently and quickly select a suitable test electrode before and after the test, in this embodiment, a drawer 9 can be provided in the cabinet. For example, see Figure 2 , the drawer 9 is used for placing test electrodes and storing soft electrodes. The setting of the drawer 9 facilitates the taking and selection of test electrodes, and can also protect the test electrodes from damage, greatly improving the test efficiency and ensuring the timely delivery rate of samples.

[0054] In order to timely discharge harmful gases to the outside, in this embodiment, a sealed cavity 10 is provided in the rear panel 2 of the sealed cover. The sealed cavity 10 is connected to an outdoor exhaust generating device 12 through an exhaust duct 11, and a plurality of exhaust ports 13 are opened on the rear panel 2. For example, see Figure 5, through the air extraction device 12 for air extraction treatment, the gas in front of the backplane 2 can be sucked into the sealed cavity 10 through the air extraction port 13, and then discharged to the outside through the air extraction pipeline 11 and the air extraction device 12. That is to say, without affecting the progress of the test, the test ozone and other harmful gases generated during the test can be directly discharged from the source to the outside through the air extraction device 12 in a timely manner, significantly improving the indoor air quality and protecting human health.

[0055] Among them, multiple air extraction ports 13 are arranged in a matrix. The more the number of air extraction ports 13, the larger the covered area, and the more uniform the suction effect.

[0056] See Figure 3-4 , in this embodiment, the lifting mechanism 3 can include a push rod motor 301, a connecting rod 304, an insulating extension arm 305, and an insulating support arm 306. The push rod motor 301 is installed on the rear side of the backplane 2, the telescopic end of the push rod motor 301 is fixed to the connecting rod 304, a strip hole is provided on the backplane 2, one end of the extension arm 305 is fixed to the connecting rod 304, and the other end of the extension arm 305 passes through the strip hole and extends to the front side of the backplane 2 and is fixed to the support arm 306. A spring connecting piece 307 is provided on the support arm 306, the bottom end of the conductive spring 8 is fixed to the spring connecting piece 307, and the electrode plate 5 is installed on the extension arm 305.

[0057] By the push rod motor 301, the connecting rod 304 can be driven to move up and down, driving the extension arm 305 and the support arm 306 to move up and down, and further driving the electrode plate 5 and the bottom end of the conductive spring 8 to move up and down. In this way, before the test starts, the electrode plate 5 can be automatically lowered, and after the test ends, the electrode plate 5 can be automatically lifted. That is, it ensures the stability of the test parameters and also improves the detection efficiency of the insulation withstand test piece.

[0058] It should be noted that during the process of the push rod motor 301 driving the connecting rod 304 to move up and down, the bottom end of the conductive spring 8 moves up and down accordingly, but the conductive spring 8 is always in a stretched state.

[0059] Among them, the lifting mechanism 3 can also include a guide rod 302 and a sliding sleeve 303. The guide rod 302 is installed on the backplane 2, the sliding sleeve 303 is slidably sleeved on the guide rod 302, and the connecting rod 304 is fixed to the sliding sleeve 303. Both the guide rod 302 and the telescopic rod of the push rod motor 301 are vertically arranged, which can improve the stability of the connecting rod 304 during the lifting process, and thus ensure the stable progress of the test.

[0060] See Figure 4, a connecting component 17 is provided on the electrode plate 5. Two screw rods 14 are provided on the connecting component 17. A return spring 15 and a limiting cylinder 16 are sleeved outside the screw rod 14. A end cap is provided at the top of the screw rod 14. The limiting cylinder 16 is located between the return spring 15 and the end cap, and the limiting cylinder 16 is fixed to the extension arm 305. The bottom end of the return spring 15 abuts against the connecting component 17, and the top end abuts against the limiting cylinder 16.

[0061] When the push rod motor 301 drives the extension arm 305 to rise, the limiting cylinder 16 will lift the screw rod 14, thereby driving the connecting component 17 to rise, and then the electrode plate 5 can be driven to rise.

[0062] When the push rod motor 301 drives the extension arm 305 to descend, the electrode plate 5 will keep descending synchronously with the limiting cylinder 16 due to the action of gravity. If the extension arm 305 descends too much, at this time the return spring 15 will be compressed, so that the electrode plate 5 is in close contact with the insulating blanket. It can avoid the extension arm 305 descending too much and causing damage to the electrode plate 5 or the insulating blanket.

[0063] In the present utility model, the mechanisms, components and parts that are not described in terms of specific structures are all existing structures that already exist in the prior art and can be directly purchased from the market.

[0064] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0065] The above is only a preferred implementation of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An insulation withstand voltage test device, characterized in that, Comprising: A tabletop (1), arranged on a cabinet body; A backboard (2), arranged on the cabinet body, a lifting mechanism (3) is provided on the backboard (2), and an electrode plate (5) is installed at the lifting end of the lifting mechanism (3); A top plate (4), arranged at the top end of the backboard (2), a high-voltage pipeline branch component (6) is provided on the top plate (4), a high-voltage housing component (7) is provided at the output end of the high-voltage pipeline branch component (6), the high-voltage housing component (7) includes an automatic tripping system, the automatic tripping system includes a body and a telescopic rod arranged on the body, a conductive spring (8) is hung at the outer end of the telescopic rod, the bottom end of the conductive spring (8) is fixedly connected to the lifting end of the lifting mechanism (3), and the bottom end of the conductive spring (8) is electrically connected to the electrode plate (5).

2. An insulation withstand voltage test device according to claim 1, characterized in that The high-voltage housing component (7) is installed below the top plate (4).

3. An insulation withstand voltage test device according to claim 1, characterized in that, A scale is provided on the tabletop (1).

4. An insulation withstand voltage test device according to claim 1, characterized in that, The tabletop (1) is a stainless steel tabletop.

5. An insulation withstand voltage test device according to claim 1, characterized in that, A drawer (9) is arranged in the cabinet body, and the drawer (9) is used for placing test electrodes and storing flexible electrodes.

6. An insulation withstand voltage test device according to claim 1, characterized in that, A sealed cavity (10) is provided in the sealed cover behind the backboard (2), the sealed cavity (10) is connected to an outdoor air extraction generating device (12) through an air extraction pipeline (11), and a plurality of air extraction openings (13) are formed in the backboard (2).

7. An insulation withstand voltage test device according to claim 6, characterized in that, The plurality of air extraction openings (13) are arranged in a matrix.

8. An insulation withstand voltage test device according to claim 1, characterized in that, The lifting mechanism (3) includes a push rod motor (301), a connecting rod (304), an extension arm (305), and a support arm (306). The push rod motor (301) is installed on the backboard (2), the telescopic end of the push rod motor (301) is fixed to the connecting rod (304), the extension arm (305) is fixed to the connecting rod (304), the support arm (306) is fixed to the extension arm (305), a spring connecting piece (307) is provided on the support arm (306), the bottom end of the conductive spring (8) is fixed to the spring connecting piece (307), a strip-shaped hole is provided on the backboard (2), and the extension arm (305) is inserted into the strip-shaped hole.

9. An insulation withstand voltage test device according to claim 8, characterized in that, The lifting mechanism (3) further includes a guide rod (302) and a sliding sleeve (303). The guide rod (302) is installed on the backboard (2), the sliding sleeve (303) is slidably sleeved on the guide rod (302), and the connecting rod (304) is fixed to the sliding sleeve (303).

10. An insulation withstand voltage test device according to claim 8, characterized in that, A connecting component (17) is provided on the electrode plate (5), a screw rod (14) is provided on the connecting component (17), a return spring (15) and a limiting cylinder (16) are sleeved outside the screw rod (14), a end cap is provided at the top end of the screw rod (14), the limiting cylinder (16) is located between the return spring (15) and the end cap, and the limiting cylinder (16) is fixed to the extension arm (305).

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