Vacuum arc-extinguishing chamber convenient for electrical performance detection

Abstract

The utility model provides a vacuum arc-extinguishing chamber convenient for electrical performance detection, which comprises a vacuum arc-extinguishing chamber body, an adjusting screw rod, a replacement cushion block, a gear row and an adjusting nut, and is in threaded connection with the extending end of the adjusting screw rod and abutted against the other end of the gear row; and the fixed opening distance is used for carrying out fracture electrical performance test when the adjusting screw rod moves. The vacuum arc-extinguishing chamber convenient for electrical performance detection is provided with the vacuum arc-extinguishing chamber body, the movable end of the vacuum arc-extinguishing chamber body is connected with the adjusting screw rod, and one end of the adjusting screw rod can extend out of the vacuum cavity of the vacuum arc-extinguishing chamber body; a replacement cushion block, a gear row and an adjusting nut are arranged, so that a fixed opening distance of a fracture electrical performance test can be carried out when an adjusting screw rod moves through the replacement cushion block, the gear row and the adjusting nut, and the adjusting screw rod drives the movable end of the vacuum arc-extinguishing chamber body to reach the fixed opening distance; the nut screwing error is avoided, the opening distance is accurate, the adaptability is good, and the practicability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical testing, and in particular relates to a vacuum interrupter which is convenient for electrical performance testing. Background Art

[0002] A sealed pole is an integrated pole made by embedding a vacuum interrupter and related conductive components within a solid insulating material. It is primarily used to improve the insulation strength and reliability of electrical equipment. The electrical performance test of the sealed pole's fracture surface is a critical test, verifying that its insulation performance meets the safety requirements of high-voltage switchgear. The vacuum interrupter is a core component of medium- and high-voltage power switches, primarily designed to rapidly extinguish arcs and suppress current through its superior internal vacuum insulation, thereby preventing accidents and incidents. The moving end of the vacuum interrupter is a key component, responsible for enabling the relative movement of contacts and connecting and disconnecting circuits.

[0003] In the existing technology, manufacturers of sealed poles are required to conduct fracture electrical performance tests before shipping. The traditional test method usually involves screwing a screw into the moving end of the vacuum interrupter, inserting the other end into a gear, and securing it with a nut. The nut is then tightened to a certain number of turns to achieve the required gap, and then the test is performed. This method is relatively cumbersome, and errors are inevitable when tightening the nut, resulting in inaccurate gaps and, consequently, inaccurate test data. It has poor adaptability and practicality. Utility Model Content

[0004] The embodiment of the utility model provides a vacuum interrupter that is convenient for electrical performance testing, aiming to solve the problem that the existing fracture electrical performance test method is complicated to operate and prone to errors.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a vacuum interrupter that is convenient for electrical performance testing, including:

[0006] The vacuum interrupter body has a vacuum cavity with one end open, and a moving end is provided in the vacuum cavity for realizing the relative movement of the contacts and the connection and disconnection of the circuit;

[0007] an adjusting screw, one end of which is connected to the movable end in the vacuum chamber and the other end of which extends out of the vacuum chamber;

[0008] A replacement pad, one side of which abuts against the open opening of the vacuum chamber, and the replacement pad is provided with a through hole for the adjusting screw to pass through;

[0009] A gear row, one end of which abuts against the other side of the replacement pad, and the gear row is provided with a through hole for the adjustment screw to pass through;

[0010] The adjusting nut is threadedly connected to the protruding end of the adjusting screw and abuts against the other end of the gear row; it is used to fix the opening distance for the fracture electrical performance test when the adjusting screw moves.

[0011] In one possible implementation, the adjusting screw has a first thread segment and a second thread segment, the first thread segment is connected to the moving end in the vacuum chamber, the second thread segment is located at the protruding end of the adjusting screw and is connected to the adjusting nut, and the second thread segment is used to drive the adjusting screw to move under the rotation of the adjusting nut to achieve the opening distance for the test.

[0012] In a possible implementation, the gear gear is made of metal.

[0013] In a possible implementation, the replacement pad is a U-shaped pad, and the U-shaped notch of the replacement pad is the opening.

[0014] In one possible implementation, the length of the second thread segment is A, the height of the replacement pad is B, and the height of the gear row is C. The length of the adjusting screw minus the length A of the second thread segment plus the height B of the replacement pad and the height C of the gear row is the fixed opening distance for conducting the fracture electrical performance test.

[0015] In a possible implementation, a connection groove for engaging a replacement gasket is provided at the vacuum cavity opening of the vacuum interrupter body.

[0016] In this implementation, compared with the prior art, a vacuum interrupter body is provided, and an adjusting screw is connected to the moving end of the vacuum interrupter body, and one end of the adjusting screw can extend out of the vacuum cavity of the vacuum interrupter body; a replacement pad, a gear row and an adjusting nut are provided, and the adjusting screw can be replaced to enable the fixed opening distance of the fracture electrical performance test to be performed when the adjusting screw is moved, so that the adjusting screw drives the moving end of the vacuum interrupter body to reach the fixed opening distance; errors in the screwing of the nut are avoided, the opening distance is accurate, the adaptability is good, and the practicality is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a vacuum interrupter for facilitating electrical performance testing provided by an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the internal structure of a vacuum interrupter for facilitating electrical performance testing provided by an embodiment of the present utility model;

[0019] Description of reference numerals:

[0020] 10. Vacuum interrupter body; 11. Vacuum chamber; 20. Adjusting screw; 21. First threaded section; 22. Second threaded section; 30. Replaceable spacer; 40. Gearbox; 50. Adjusting nut. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Please also refer to Figure 1 and Figure 2 The vacuum interrupter provided by the present invention and convenient for electrical performance testing will now be described. The vacuum interrupter provided by the present invention and convenient for electrical performance testing comprises a vacuum interrupter body 10, an adjusting screw 20, a replacement pad 30, a gear row 40, and an adjusting nut 50. The vacuum interrupter body 10 has a vacuum chamber 11 with an open end. The vacuum chamber 11 is provided with a movable end responsible for realizing the relative movement of the contacts and the connection and disconnection of the circuit. The adjusting screw 20 has one end connected to the movable end in the vacuum chamber 11 and the other end extending out of the vacuum chamber 11. The replacement pad 30 has one side abutted against the open end of the vacuum chamber 11 and is provided with a through hole for the adjusting screw 20 to pass through. The gear row 40 has one end abutted against the other side of the replacement pad 30 and is provided with a through hole for the adjusting screw 20 to pass through. The adjusting nut 50 is threadedly connected to the protruding end of the adjusting screw 20 and abuts against the other end of the gear row 40. It is used to make the fixed opening distance for conducting the fracture electrical performance test when the adjusting screw 20 moves.

[0023] Compared with the prior art, the vacuum interrupter provided in this embodiment is provided with a vacuum interrupter body 10, and an adjusting screw 20 is connected to the movable end of the vacuum interrupter body 10, one end of which can extend out of the vacuum cavity 11 of the vacuum interrupter body 10. A replacement spacer 30, a gear 40, and an adjusting nut 50 are provided. By replacing the spacer 30, the gear 40, and the adjusting nut 50, the adjusting screw 20 can be moved to a fixed opening distance for the fracture electrical performance test, so that the adjusting screw 20 drives the movable end of the vacuum interrupter body 10 to reach a fixed opening distance. This avoids errors in the nut turning, ensures accurate opening distance, and has good adaptability and practicality.

[0024] In some embodiments, the adjusting screw 20 may be Figure 1 、 Figure 2 The structure shown. Figure 1 、 Figure 2The adjusting screw 20 has a first thread segment 21 and a second thread segment 22. The first thread segment 21 is connected to the moving end in the vacuum chamber 11. The second thread segment 22 is located at the protruding end of the adjusting screw 20 and is connected to the adjusting nut 50. The second thread segment 22 is used to drive the adjusting screw 20 to move when the adjusting nut 50 rotates to achieve the opening distance for the test.

[0025] The first thread segment 21 and the second thread segment 22 can be understood as threads being provided at both ends of the adjusting screw 20. The first thread segment 21 can be connected to the moving end in the vacuum chamber 11, and the movement of the moving end is driven by the movement of the adjusting screw 20. The second thread segment 22 is located at the protruding end of the adjusting screw 20, and can drive the adjusting screw 20 to move under the rotation of the adjusting nut 50 to achieve the opening distance for the test.

[0026] It should be explained that the distance of the second thread segment 22 has a fixed length. When the adjusting nut 50 is rotated to the fixed length of the second thread segment 22, a fixed opening distance for testing is achieved.

[0027] In some embodiments, the gear shift 40 may be configured as follows: Figure 1 、 Figure 2 The structure shown. Figure 1 、 Figure 2 , the gear shift 40 is made of metal.

[0028] The gear shift 40 is made of metal to prevent the gear shift 40 from being deformed, thereby affecting the test data.

[0029] In some embodiments, the replacement pad 30 may be used as follows: Figure 1 、 Figure 2 The structure shown. Figure 1 、 Figure 2 , the replacement pad 30 is a U-shaped pad, and the U-shaped notch of the replacement pad is a pass.

[0030] A U-shaped gasket can be understood as a U-shaped washer. A U-shaped gasket is a specially shaped metal or non-metallic material, commonly used in mechanical assembly to adjust clearances, reduce vibration, or improve the sealing of contact surfaces. U-shaped gaskets are known in the art and will not be described in detail here.

[0031] In some embodiments, the second thread segment 22 may be formed as follows: Figure 1 、 Figure 2 The structure shown. Figure 1 、 Figure 2 The length of the second thread segment 22 is A, the height of the replacement pad 30 is B, and the height of the gear row 40 is C. The length of the adjusting screw 20 minus the length A of the second thread segment 22 plus the height B of the replacement pad 30 and the height C of the gear row 40 is the fixed opening distance for the fracture electrical performance test.

[0032] In some embodiments, the vacuum interrupter body 10 may be formed as follows: Figure 1 、 Figure 2 The structure shown. Figure 1 、 Figure 2 A connection groove for the replacement pad 30 to be clamped is provided at the open portion of the vacuum cavity 11 of the vacuum interrupter body 10.

[0033] The connection groove at the opening of the vacuum chamber 11 can facilitate the replacement of the pad 30 and the replacement pad 30 can be replaced according to different experimental opening distances.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vacuum interrupter chamber that facilitates electrical performance testing, characterized in that: include: The vacuum interrupter body has a vacuum cavity with one end open, and a moving end is provided in the vacuum cavity for realizing the relative movement of the contacts and the connection and disconnection of the circuit; an adjusting screw, one end of which is connected to the movable end in the vacuum chamber and the other end of which extends out of the vacuum chamber; A replacement pad, one side of which abuts against the open opening of the vacuum chamber, and the replacement pad is provided with a through hole for the adjusting screw to pass through; A gear row, one end of which abuts against the other side of the replacement pad, and the gear row is provided with a through hole for the adjustment screw to pass through; The adjusting nut is threadedly connected to the protruding end of the adjusting screw and abuts against the other end of the gear row; it is used to fix the opening distance for the fracture electrical performance test when the adjusting screw moves.

2. The vacuum interrupter for facilitating electrical performance testing according to claim 1, characterized in that: The adjusting screw has a first thread segment and a second thread segment. The first thread segment is connected to the moving end in the vacuum chamber, and the second thread segment is located at the protruding end of the adjusting screw and is connected to the adjusting nut. The second thread segment is used to drive the adjusting screw to move under the rotation of the adjusting nut to achieve the opening distance for the test.

3. The vacuum interrupter for facilitating electrical performance testing according to claim 2, characterized in that: The gear row is made of metal.

4. The vacuum interrupter for facilitating electrical performance testing according to claim 3, characterized in that: The replacement pad is a U-shaped pad, and the U-shaped notch of the replacement pad is the passage.

5. The vacuum interrupter for facilitating electrical performance testing according to claim 4, characterized in that: The length of the second thread segment is A, the height of the replacement pad is B, and the height of the gear row is C. The length of the adjusting screw minus the length A of the second thread segment plus the height B of the replacement pad and the height C of the gear row is the fixed opening distance for conducting the fracture electrical performance test.

6. The vacuum interrupter for facilitating electrical performance testing according to claim 1, characterized in that: A connection groove for clamping a replacement pad is provided at the vacuum cavity opening of the vacuum interrupter body.

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