Insulation breakdown resistance detection device

Abstract

The utility model discloses an insulation breakdown resistance detection device, which comprises a detection table, a detection frame, a withstand voltage tester, a pressing mechanism, a lower flexible conductive piece and an upper flexible conductive piece, the withstand voltage tester is arranged on the detection frame, an alarm is arranged on the withstand voltage tester, the withstand voltage tester is connected with a first test line and a second test line, and the pressing mechanism is arranged on the detection frame; the number of the lower flexible conductive parts is multiple, the multiple lower flexible conductive parts are connected in series through the electric wire, the electric wire is connected with the first test line, and each lower flexible conductive part is arranged on the detection table; the upper flexible conductive parts are located above the lower flexible conductive parts, the upper flexible conductive parts are connected with the downward pressing mechanism and driven by the downward pressing mechanism to ascend and descend so as to be close to or away from the lower flexible conductive parts, and the upper flexible conductive parts are connected with the second test line. According to the application, the plurality of lower flexible conductive parts are arranged and are connected in series through the electric wires, so that a plurality of vacuum insulated panels can be tested at a time, and the test efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to an insulation breakdown resistance testing device. Background Technology

[0002] Vacuum insulation panel (VIP panel) is a type of vacuum insulation material. It is composed of a core material and a vacuum protective surface layer. It effectively avoids heat transfer caused by air convection, thus significantly reducing the thermal conductivity. It does not contain any ODS material and has environmentally friendly and energy-efficient characteristics. It is currently the most advanced high-efficiency insulation material in the world.

[0003] After the vacuum insulation panels are manufactured, their insulation and breakdown resistance need to be tested to determine their quality. Traditionally, this testing method involves using a withstand voltage tester. This tester is connected to test leads and a conductive plate, and includes an alarm. During testing, the vacuum insulation panel is placed on the conductive plate with its lower part in contact. Then, the end of the test lead is placed against the upper part of the panel. If the alarm does not sound when the test lead is energized, the current has not broken down the panel, and the insulation and breakdown resistance meet the requirements. If the alarm sounds, the current has broken down the panel, forming a circuit through the conductive plate, and the insulation and breakdown resistance do not meet the requirements. The drawback of this traditional withstand voltage tester method is that it requires testing each vacuum insulation panel individually, resulting in low testing efficiency. Utility Model Content

[0004] Based on the aforementioned problems in the existing technology, the purpose of this application is to provide an insulation breakdown test device, which, by setting multiple lower flexible conductive elements, connects the multiple lower flexible conductive elements in series through wires, thereby enabling the simultaneous testing of multiple vacuum insulation panels with high testing efficiency.

[0005] The technical solution adopted by this application to solve its technical problem is: an insulation breakdown test device, including a test table, a test frame, a withstand voltage tester, a pressing mechanism, a lower flexible conductive element and an upper flexible conductive element;

[0006] The withstand voltage tester is mounted on a testing frame and equipped with an alarm. The withstand voltage tester is connected to a first test lead and a second test lead.

[0007] The pressing mechanism is mounted on the testing frame;

[0008] The lower flexible conductive element is configured as multiple, and the multiple lower flexible conductive elements are connected in series by wires. The wires are connected to the first test line, and each lower flexible conductive element is set on the test platform.

[0009] The upper flexible conductive element is located above each lower flexible conductive element. The upper flexible conductive element is connected to the pressing mechanism and is driven by the pressing mechanism to move up or down to approach or move away from the lower flexible conductive element. The upper flexible conductive element is connected to the second test line.

[0010] Furthermore, both the lower flexible conductive element and the upper flexible conductive element are made of conductive cotton.

[0011] Furthermore, the upper flexible conductive element is grounded via a connecting line.

[0012] Furthermore, a connector is provided at the end of the wire, and the connector is connected to the first test line; when the upper flexible conductive member is not lowered, the upper flexible conductive member is connected to the connector.

[0013] Furthermore, the connector is a connecting piece, which includes a horizontal part, a vertical part, and an arc-shaped part. The horizontal part is connected to the wire, the lower end of the vertical part is connected to the horizontal part, and the arc-shaped part is connected to the upper end of the vertical part. The arc-shaped part may or may not contact the upper flexible conductive element.

[0014] Furthermore, a first insulating plate is provided on the testing platform, and the lower flexible conductive element is provided on the first insulating plate.

[0015] Furthermore, the testing frame includes a frame body and a mounting plate. The frame body is disposed on the side of the testing table, and the mounting plate is disposed on the frame body. The pressure tester and the pressing mechanism are disposed on the mounting plate.

[0016] Furthermore, the pressing mechanism includes a pressing cylinder and a pressing plate. The pressing cylinder is fixed on the testing frame. The pressing plate is connected to the pressing cylinder and is driven to rise and fall by the pressing cylinder. The pressing plate is connected to the second insulating plate. The upper flexible conductive element is disposed on the second insulating plate.

[0017] Furthermore, a guide post is provided on the lower pressure plate; the guide post passes through the mounting plate and can move up and down along the mounting plate.

[0018] Furthermore, a displacement sensor is installed on the downward pressure cylinder, and the displacement sensor is communicatively connected to the pressure resistance tester.

[0019] Furthermore, control buttons are provided on the testing platform.

[0020] The beneficial effects of this application are as follows: During testing, a group of items to be tested, such as multiple vacuum insulation panels, is placed on a lower flexible conductive element, so that each lower flexible conductive element has a vacuum insulation panel. Then, a pressing mechanism drives the upper flexible conductive element to descend, causing the upper flexible conductive element to abut against the upper side of each vacuum insulation panel. Next, a withstand voltage tester is activated. If the withstand voltage tester does not alarm, it indicates that the current has not broken down the vacuum insulation panel, meaning that the insulation and breakdown resistance of this group of vacuum insulation panels meet the requirements. If the alarm sounds, it indicates that the current has broken down the vacuum insulation panel, and the current forms a circuit through the upper flexible conductive element. At least one product in this group of vacuum insulation panels does not meet the requirements for insulation and breakdown resistance. Finally, each product in this group of vacuum insulation panels is tested individually until the non-compliant products are eliminated. By setting multiple lower flexible conductive elements, each corresponding to one vacuum insulation panel, this application allows for the simultaneous testing of the insulation and breakdown resistance of multiple vacuum insulation panels, greatly improving testing efficiency. Meanwhile, by setting a lower flexible conductive element and an upper flexible conductive element in this application, the lower flexible conductive element and the upper flexible conductive element are less likely to damage the vacuum insulation board when they abut against the upper and lower sides of the vacuum insulation board. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the insulation breakdown test device in this application;

[0022] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0023] Figure 3 This is a structural schematic diagram of the insulation breakdown test device in this application from another angle.

[0024] Explanation of reference numerals in the attached figures

[0025] Test stand 1, first insulating plate 11, control button 12, test frame 2, frame body 21, mounting plate 22, withstand voltage tester 3, first test line 31, second test line 32, pressing mechanism 4, pressing cylinder 41, pressing plate 42, second insulating plate 43, guide post 44, displacement sensor 45, lower flexible conductive part 5, wire 51, connector 52, horizontal part 521, vertical part 522, arc part 523, upper flexible conductive part 6, connecting part 61, connecting line 7. Detailed Implementation

[0026] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 3As shown, this utility model discloses an insulation breakdown test device, comprising a test platform 1, a test frame 2, a withstand voltage tester 3, a pressing mechanism 4, a lower flexible conductive element 5, and an upper flexible conductive element 6. The withstand voltage tester 3 is mounted on the test frame 2 and has an alarm. The withstand voltage tester 3 is connected to a first test line 31 and a second test line 32. The pressing mechanism 4 is mounted on the test frame 2. Multiple lower flexible conductive elements 5 are connected in series by wires 51, which are connected to the first test line 31. Each lower flexible conductive element 5 is mounted on the test platform 1. The upper flexible conductive element 6 is located above each lower flexible conductive element 5 and is connected to the pressing mechanism 4. The pressing mechanism 4 drives the upper flexible conductive element 6 to move it closer to or away from the lower flexible conductive element 5. The upper flexible conductive element 6 is connected to the second test line 32.

[0028] Thus, the insulation breakdown resistance testing device of this utility model, during testing, places a group of items to be tested, such as multiple vacuum insulation panels, on a lower flexible conductive member 5, so that each lower flexible conductive member 5 has a vacuum insulation panel. Then, a pressing mechanism 4 drives an upper flexible conductive member 6 to descend, so that the upper flexible conductive member 6 abuts against the upper side of each vacuum insulation panel. Next, a withstand voltage tester 3 is turned on. If the withstand voltage tester 3 does not alarm, it means that the current has not broken down the vacuum insulation panel, and the insulation and breakdown resistance of the group of vacuum insulation panels meet the requirements. If the alarm sounds, it means that the current has broken down the vacuum insulation panel, and the current forms a circuit through the upper flexible conductive member 6. At least one product in the group of vacuum insulation panels does not meet the requirements for insulation and breakdown resistance. Finally, the group of vacuum insulation panels is tested one by one until the products that do not meet the requirements are eliminated. This application, by setting multiple lower flexible conductive members 5, each corresponding to a vacuum insulation panel, allows multiple vacuum insulation panels to be tested for insulation and breakdown resistance at the same time, greatly improving the testing efficiency. Meanwhile, by setting a lower flexible conductive element 5 and an upper flexible conductive element 6 in this application, the lower flexible conductive element 5 and the upper flexible conductive element 6 have a certain degree of flexibility, so that when the lower flexible conductive element 5 and the upper flexible conductive element 6 abut against the upper and lower sides of the vacuum insulation board, they are not likely to damage the vacuum insulation board.

[0029] Optionally, both the lower flexible conductive element 5 and the upper flexible conductive element 6 are conductive cotton. Initially, the inventors of this application used conductive elements such as iron or copper blocks for testing. However, due to the high hardness of iron or copper blocks, they found that these blocks damaged the barrier film of the vacuum insulation panel when pressed against its surface. Therefore, the inventors attempted to use other conductive elements to replace the iron or copper blocks. After multiple tests, they ultimately chose to use conductive cotton instead. Conductive cotton has good conductivity while also possessing a certain degree of softness, ensuring that it does not damage the barrier film of the vacuum insulation panel when in contact with its upper and lower surfaces. Furthermore, the conductivity of the conductive cotton meets the testing requirements.

[0030] To improve safety, the upper flexible conductive element 6 is grounded via the connecting wire 7.

[0031] Furthermore, a connector 52 is provided at the end of the wire 51, and the connector 52 is connected to the first test lead 31; when the upper flexible conductive member 6 is not lowered, the upper flexible conductive member 6 is connected to the connector 52. When the upper flexible conductive member 6 is not lowered, the withstand voltage tester 3 is usually not turned on, thus allowing the lower flexible conductive member 5 to be connected to the upper flexible conductive member 6 through the connector 52, so that both the lower flexible conductive member 5 and the upper flexible conductive member 6 are grounded, further improving safety.

[0032] Specifically, connector 52 is a connecting piece, such as... Figure 2 As shown, the connecting piece includes a horizontal portion 521, a vertical portion 522, and an arc-shaped portion 523. The horizontal portion 521 is connected to the wire 51, the lower end of the vertical portion 522 is connected to the horizontal portion 521, and the arc-shaped portion 523 is connected to the upper end of the vertical portion 522. The arc-shaped portion 523 may or may not contact the upper flexible conductive member 6. When the upper flexible conductive member 6 is not descending, it is in contact with the arc-shaped portion 523. After the upper flexible conductive member 6 begins to descend, it no longer contacts the arc-shaped portion 523, thereby disconnecting the lower flexible conductive member 5 and the upper flexible conductive member 6, facilitating testing of the vacuum insulation panel. The side plate of the upper flexible conductive member 6 can extend to form a connecting portion 61 that facilitates contact with the arc-shaped portion 523.

[0033] To improve safety, a first insulating plate 11 is installed on the testing platform 1, and a lower flexible conductive element 5 is installed on the first insulating plate 11.

[0034] In this embodiment, the testing frame 2 includes a frame body 21 and a mounting plate 22. The frame body 21 is disposed on the side of the testing platform 1, and the mounting plate 22 is disposed on the frame body 21. The withstand voltage tester 3 and the pressing mechanism 4 are disposed on the mounting plate 22. The mounting plate 22 is located directly above the testing platform 1, which facilitates the installation of the pressing mechanism 4, enabling the lower flexible conductive element 5 and the upper flexible conductive element 6 to be arranged opposite each other, thereby facilitating the testing of the insulation and breakdown resistance of the vacuum insulation board.

[0035] Specifically, the pressing mechanism 4 includes a pressing cylinder 41 and a pressing plate 42. The pressing cylinder 41 is fixed on the testing frame 2, as if it were fixed on the mounting plate 22. The pressing plate 42 is connected to the pressing cylinder 41 and is driven to rise and fall by the pressing cylinder 41. The pressing plate 42 is connected to the second insulating plate 43, and the upper flexible conductive element 6 is disposed on the second insulating plate 43. During testing, the pressing cylinder 41 drives the pressing plate 42 to descend, and the descent of the pressing plate 42 drives the upper flexible conductive element 6 to descend synchronously, so that the upper flexible conductive element 6 is pressed against the upper side of the vacuum insulation plate. The second insulating plate 43 is provided to further improve safety.

[0036] To make the lower pressure plate 42 move more smoothly, guide posts 44 are provided on the lower pressure plate 42 in this embodiment. The guide posts 44 pass through the mounting plate 22 and can move up and down along the mounting plate 22. If there are four guide posts 44, when the lower pressure plate 42 moves up and down, the four guide posts 44 move up and down along the mounting plate 22, making the lower pressure plate 42 move up and down more stably and smoothly.

[0037] In this embodiment, a displacement sensor 45 is installed on the lower cylinder 41, and the displacement sensor 45 is communicatively connected to the withstand pressure tester 3. During the test, since the upper flexible conductive member 6 is not lowered, it is connected to the connector 52, making the upper flexible conductive member 6 connected to the lower flexible conductive member 5. If the withstand pressure tester 3 is turned on directly before the upper flexible conductive member 6 is lowered, the withstand pressure tester 3 will directly alarm. To address this, this embodiment uses the displacement sensor 45. When the upper flexible conductive member 6 is lowered a certain distance, the sensor drives the withstand pressure tester 3 to turn on, thereby ensuring that the withstand pressure tester 3 is turned on only after the upper flexible conductive member 6 is lowered, that is, after the lower flexible conductive member 5 and the upper flexible conductive member 6 are disconnected.

[0038] Furthermore, a control button 12 is provided on the testing station 1. By operating the control button 12, the lower pressure plate 42 is pressed down, thereby turning on the pressure tester 3, which is convenient to operate.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An insulation breakdown test device, characterized in that: Includes a testing station, testing frame, withstand voltage tester, pressure-lowering mechanism, lower flexible conductive component, and upper flexible conductive component; The withstand voltage tester is mounted on the testing frame and equipped with an alarm. The withstand voltage tester is connected to a first test line and a second test line. The pressing mechanism is mounted on the testing frame. Multiple lower flexible conductive elements are connected in series by wires, which are connected to the first test line. Each lower flexible conductive element is mounted on the testing platform. An upper flexible conductive element is located above each lower flexible conductive element. The upper flexible conductive element is connected to the pressing mechanism and is driven by the pressing mechanism to move up or down to approach or move away from the lower flexible conductive element. The upper flexible conductive element is connected to the second test line.

2. The insulation breakdown test device as described in claim 1, characterized in that: Both the lower flexible conductive element and the upper flexible conductive element are made of conductive cotton.

3. The insulation breakdown test device as described in claim 1, characterized in that: The upper flexible conductive element is grounded via a connecting line.

4. The insulation breakdown test device as described in claim 3, characterized in that: A connector is provided at the end of the wire, and the connector is connected to the first test line; when the upper flexible conductive element is not lowered, the upper flexible conductive element is connected to the connector.

5. The insulation breakdown test device as described in claim 4, characterized in that: The connector is a connecting piece, which includes a horizontal part, a vertical part and an arc-shaped part. The horizontal part is connected to the wire, the lower end of the vertical part is connected to the horizontal part, and the arc-shaped part is connected to the upper end of the vertical part. The arc-shaped part may or may not contact the upper flexible conductive element.

6. The insulation breakdown test device as described in claim 1, characterized in that: A first insulating plate is provided on the testing platform, and the lower flexible conductive element is provided on the first insulating plate.

7. The insulation breakdown withstand testing device as described in claim 1, characterized in that: The testing frame includes a frame body and a mounting plate. The frame body is located on the side of the testing table, and the mounting plate is located on the frame body. The pressure tester and the pressing mechanism are mounted on the mounting plate.

8. The insulation breakdown test device as described in claim 7, characterized in that: The pressing mechanism includes a pressing cylinder and a pressing plate. The pressing cylinder is fixed on the testing frame. The pressing plate is connected to the pressing cylinder and is driven to rise and fall by the pressing cylinder. The pressing plate is connected to the second insulating plate. The upper flexible conductive element is disposed on the second insulating plate.

9. The insulation breakdown test device as described in claim 8, characterized in that: The lower pressure plate is provided with guide posts; the guide posts pass through the mounting plate and can move up and down along the mounting plate.

10. The insulation breakdown test device as described in claim 8, characterized in that: A displacement sensor is installed on the downward pressure cylinder, and the displacement sensor is communicatively connected to the pressure resistance tester.

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