Pressure-adjustable breakdown voltage testing device

Abstract

The utility model relates to the technical field of breakdown voltage testing, and discloses a breakdown voltage testing device capable of adjusting pressure, which comprises a testing box body, a negative electrode metal plate is arranged at the bottom end in the testing box body, an assembling seat is arranged at the top end in the testing box body, and a cylinder is arranged in the assembling seat. And a gas adjusting valve is arranged on one side of the air cylinder, an insulating block is installed at the bottom end of the air cylinder, and a positive electrode metal plate is installed at the bottom end of the insulating block. When the breakdown voltage testing device is used for testing, if the breakdown strength and the withstand voltage time of the solid insulating material under different pressures need to be tested, the pressure of the gas supplied to the cylinder can be changed by adjusting the opening degree of the gas adjusting valve, so that the pressure of the cylinder can be adjusted; compared with the mode that a weight is placed above the solid insulating material to apply pressure, the operation mode is more convenient and faster to use.

Description

Technical Field

[0001] The utility model relates to the technical field of breakdown voltage testing, in particular to a breakdown voltage testing device with adjustable pressure. Background Art

[0002] The breakdown voltage test device is a device used to test the breakdown strength and withstand voltage time of solid insulating materials under a specific voltage. It has the advantages of high safety, efficient data processing capabilities and multiple functions. By testing the breakdown strength and withstand voltage time, the safety of the tested solid insulating materials can be ensured when installed in the corresponding electronic equipment.

[0003] Traditional breakdown voltage testers, when testing the breakdown strength of solid insulating materials under pressure, use weights placed on top of the solid insulating material to apply pressure. However, placing and removing the weights requires moving them around, making operation inconvenient. Therefore, we propose a breakdown voltage tester with adjustable pressure to address this issue. Utility Model Content

[0004] The purpose of the present invention is to provide a breakdown voltage testing device with adjustable pressure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a breakdown voltage testing device with adjustable pressure, comprising a test box, a negative metal plate installed at the bottom end of the test box, an assembly seat installed at the top end of the test box, a cylinder installed inside the assembly seat, a gas regulating valve provided on one side of the cylinder, an insulating block installed at the bottom end of the cylinder, and a positive metal plate installed at the bottom end of the insulating block.

[0006] Preferably, a connecting rod is fixed to the front end of the insulating block, an adjusting block is fixed to the front end of the connecting rod, a locking bolt is movably provided on the right side inside the adjusting block, an adjusting track is movably provided inside the adjusting block, and a box door is fixed to the front end of the adjusting track, sliding blocks are fixed on both sides of the rear end of the box door, a sliding seat is provided at one end of the sliding block, and the sliding seat is fixed to the outer wall of the test box body, and a sliding groove is provided inside the sliding seat.

[0007] Preferably, two groups of sliding blocks are provided, and the two groups of sliding blocks form a sliding structure through the sliding groove and the sliding seat.

[0008] Preferably, the cross section of the adjustment block is larger than the cross section of the adjustment rail, and a sliding structure is formed between the adjustment block and the adjustment rail.

[0009] Preferably, movable seats are installed at the bottom ends of both sides of the interior of the test box, threaded rods are movably provided inside the movable seats, and a clamping block is fixed on one side of the threaded rods.

[0010] Preferably, the clamping blocks are provided in two groups, and the two groups of clamping blocks are symmetrically distributed about the central axis of the test box.

[0011] Preferably, the inner side wall of the movable seat is evenly provided with internal threads, and a threaded connection is formed between the movable seat and the threaded rod.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the pressure-adjustable breakdown voltage test device not only can conveniently apply a certain pressure to the solid insulating material, making it easy to open and close the test box, but also can clamp the solid insulating material, ensuring the stability of the test;

[0013] (1) When the breakdown voltage test device is used to test the breakdown strength and withstand time of solid insulating materials under different pressures, the gas pressure supplied to the cylinder can be changed by adjusting the opening degree of the gas regulating valve, thereby adjusting the pressure of the cylinder. Compared with applying pressure by placing weights on the top of the solid insulating material, the above operation method is more convenient and efficient.

[0014] (2) During the use of the breakdown voltage test device, the test box body needs to be opened and closed by moving the box door. During the test, it is necessary to ensure that the box door is closed to maintain safety during the test. Because the box door is provided with components such as an adjustment track, a locking bolt, an adjustment block and a connecting rod, it can move up and down along with the up and down movement of the insulating block, thereby ensuring that when the insulating block pushes the positive metal plate to fit above the solid insulating material, the box door at one end of the test box body is in a closed state, which is safer to use;

[0015] (3) After the solid insulating material is placed on top of the negative metal plate, during the process of the positive metal plate being attached to the solid insulating material for testing, it is necessary to ensure the stability of the placement of the solid insulating material. Therefore, by adding components such as threaded rods, movable seats and clamping blocks, the solid insulating material can be stably placed on top of the negative metal plate, thereby ensuring the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural diagram of the utility model;

[0017] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3For the utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0019] Figure 4 This is a schematic diagram of the front view structure of the clamping block of the present invention.

[0020] In the figure: 1. Test box body; 2. Negative metal plate; 3. Threaded rod; 4. Sliding seat; 5. Sliding block; 6. Box door; 7. Assembly seat; 8. Gas regulating valve; 9. Cylinder; 10. Insulating block; 11. Positive metal plate; 12. Sliding groove; 13. Moving seat; 14. Adjustment track; 15. Locking bolt; 16. Adjustment block; 17. Connecting rod; 18. Clamping block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1-4 A breakdown voltage test device with adjustable pressure includes a test box 1, a negative metal plate 2 is installed at the bottom end of the test box 1, an assembly seat 7 is installed at the top end of the test box 1, a cylinder 9 is installed inside the assembly seat 7, a gas regulating valve 8 is provided on one side of the cylinder 9, an insulating block 10 is installed at the bottom end of the cylinder 9, and a positive metal plate 11 is installed at the bottom end of the insulating block 10;

[0023] Specifically, if Figure 1 and Figure 2 As shown, if the solid insulating material being tested requires different pressures, the amount of gas flowing into the cylinder 9 can be increased or decreased by controlling the opening degree of the gas regulating valve 8, thereby adjusting the pressure applied by the cylinder 9 to the solid insulating material.

[0024] Embodiment 2: A connecting rod 17 is fixed to the front end of the insulating block 10, and an adjusting block 16 is fixed to the front end of the connecting rod 17. A locking bolt 15 is movably provided on the right side of the adjusting block 16. An adjusting rail 14 is movably provided inside the adjusting block 16, and a box door 6 is fixed to the front end of the adjusting rail 14. Sliding blocks 5 are fixed on both sides of the rear end of the box door 6. One end of the sliding block 5 is provided with a sliding seat 4, and the sliding seat 4 is fixed to the outer wall of the test box body 1. A sliding groove 12 is provided inside the sliding seat 4. Two groups of sliding blocks 5 are provided. The two groups of sliding blocks 5 form a sliding structure between the sliding groove 12 and the sliding seat 4, so that the box door 6 follows the up and down movement of the insulating block 10 to move up and down stably. The cross section of the adjusting block 16 is larger than the cross section of the adjusting rail 14. The sliding structure formed between the adjusting block 16 and the adjusting rail 14 can adjust the spatial position between the box door 6 and the insulating block 10, so that the box door 6 moving with the insulating block 10 is suitable for solid insulating materials of different thicknesses;

[0025] Specifically, if Figure 1 、 Figure 2 and Figure 3 As shown, when the cylinder 9 pushes the positive metal plate 11 below the insulating block 10 to fit above the solid insulating material, the box door 6 moves downward together with the downward movement of the insulating block 10 through the connecting rod 17, so that the test box body 1 is in a closed state. When encountering solid insulating materials of different thicknesses, the locking bolt 15 can be unscrewed and the adjusting block 16 can be adjusted to a suitable position on the outer wall of the adjusting track 14 according to actual conditions by sliding the adjusting block 16 on the outer wall of the adjusting track 14, and then the locking bolt 15 is turned to lock the adjusting block 16, thereby adjusting the box door 6 to a suitable position, which is suitable for closing fixed materials of different thicknesses.

[0026] Example 3: A movable seat 13 is installed at the bottom end of both sides of the interior of the test box 1. A threaded rod 3 is movably provided inside the movable seat 13, and a clamping block 18 is fixed to one side of the threaded rod 3. Two groups of clamping blocks 18 are provided. The two groups of clamping blocks 18 are symmetrically distributed about the central axis of the test box 1, which makes the clamping of the solid insulating material more stable. The inner side walls of the movable seat 13 are evenly provided with internal threads. The movable seat 13 and the threaded rod 3 are threadedly connected, so that the clamping block 18 can move stably to stably clamp the solid insulating material.

[0027] Specifically, if Figure 1 and Figure 4 As shown, after the solid insulating material is placed above the negative metal plate 2, the threaded rods 3 on both sides of the test box 1 are rotated in sequence, and the clamping blocks 18 are pushed to fit the two sides of the solid insulating material respectively through the threaded rods 3, thereby clamping the solid insulating material so that it is stably placed above the negative metal plate 2 for testing.

[0028] Working principle: When the present invention is in use, the positive metal plate 11 and the negative metal plate 2 are connected to the corresponding electronic equipment using wires. A corresponding insulating pad is also installed between the negative metal plate 2 and the test box 1. The solid insulating material to be tested is placed on top of the negative metal plate 2. Then, the threaded rods 3 on both sides of the test box 1 are rotated in sequence. The clamping blocks 18 are pushed to fit the two sides of the solid insulating material through the threaded rods 3, so that the solid insulating material is stably placed on top of the negative metal plate 2. After placement, the cylinder 9 is started to push the positive metal plate 11 moves downward to fit above the solid insulating material, so that the solid insulating material to be tested is between the positive metal plate 11 and the negative metal plate 2, and then the solid insulating material is electrically broken down to test the breakdown strength and voltage resistance time of the solid insulating material. If it is necessary to test the breakdown strength and voltage resistance time at different pressures, the opening degree of the gas regulating valve 8 is controlled to increase or decrease the amount of gas entering the cylinder 9, and the pressure applied to the solid insulating material by the cylinder 9 is adjusted, and then the breakdown strength and voltage resistance time values of the solid insulating material under different pressures are observed.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A breakdown voltage test device with adjustable pressure, comprising a test box (1), characterized in that: A negative metal plate (2) is installed at the bottom end of the test box (1), an assembly seat (7) is installed at the top end of the test box (1), a cylinder (9) is installed inside the assembly seat (7), a gas regulating valve (8) is provided on one side of the cylinder (9), an insulating block (10) is installed at the bottom end of the cylinder (9), and a positive metal plate (11) is installed at the bottom end of the insulating block (10).

2. The pressure-adjustable breakdown voltage test device according to claim 1, characterized in that: The front end of the insulating block (10) is fixed with a connecting rod (17), the front end of the connecting rod (17) is fixed with an adjusting block (16), the right side of the inside of the adjusting block (16) is movably provided with a locking bolt (15), the inside of the adjusting block (16) is movably provided with an adjusting track (14), and the front end of the adjusting track (14) is fixed with a box door (6), both sides of the rear end of the box door (6) are fixed with sliding blocks (5), one end of each sliding block (5) is provided with a sliding seat (4), and the sliding seat (4) is fixed to the outer wall of the test box (1), and the inside of each sliding seat (4) is provided with a sliding groove (12).

3. The pressure-adjustable breakdown voltage test device according to claim 2, characterized in that: The sliding blocks (5) are provided in two groups, and the two groups of sliding blocks (5) form a sliding structure with the sliding seat (4) through the sliding groove (12).

4. The pressure-adjustable breakdown voltage test device according to claim 2, characterized in that: The cross section of the adjustment block (16) is larger than the cross section of the adjustment track (14), and a sliding structure is formed between the adjustment block (16) and the adjustment track (14).

5. The pressure-adjustable breakdown voltage test device according to claim 1, characterized in that: The bottom ends of both sides of the test box (1) are both installed with movable seats (13), the interior of the movable seats (13) is movably provided with threaded rods (3), and one side of the threaded rods (3) is fixed with a clamping block (18).

6. The pressure-adjustable breakdown voltage test device according to claim 5, characterized in that: The clamping blocks (18) are provided in two groups, and the two groups of clamping blocks (18) are symmetrically distributed about the central axis of the test box (1).

7. The pressure-adjustable breakdown voltage test device according to claim 5, characterized in that: The inner side wall of the movable seat (13) is evenly provided with internal threads, and a threaded connection is formed between the movable seat (13) and the threaded rod (3).

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