Elastic washer for electrical equipment and isolating switch

Abstract

The utility model relates to an elastic washer for electrical equipment and an isolating switch, the elastic washer comprises a washer body, the edge of the washer body is provided with a circle of spherical cover, the top of the spherical cover is provided with an opening, and the bottom end of the spherical cover is fixedly connected with the washer body; according to the utility model, the problem of non-uniform electric field distribution is reduced, and meanwhile, an unbalanced electric field caused by sharp corners of fasteners such as bolts and nuts is effectively shielded by the spherical cover, so that the electric field distribution is further optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of elastic washers, in particular to an elastic washer and an isolating switch for electrical equipment. Background Art

[0002] In electrical equipment, especially high-voltage equipment such as disconnectors, the electric field distribution is crucial to the performance and stability of the equipment. Although traditional elastic washers have the functions of tightening, preventing loosening, buffering and supporting, they are not good enough in optimizing the electric field distribution. At the same time, traditional washer design often ignores the effect of fasteners (such as bolts, nuts, etc.) on the electric field distribution. Some irregular parts of these fasteners may cause uneven electric field distribution, which in turn causes safety hazards. Summary of the invention

[0003] The main purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide an elastic washer and an isolating switch for electrical equipment.

[0004] The specific scheme of the utility model is: an elastic gasket for electrical equipment, comprising a gasket body, a circle of spherical cover is arranged at the edge of the gasket body, an opening is arranged on the top of the spherical cover, and the bottom end of the spherical cover is fixedly connected with the gasket body.

[0005] Furthermore, the spherical cover and the gasket body are integrally formed by drawing and pressing.

[0006] Furthermore, the gasket body and the spherical cover are both made of 304 stainless steel.

[0007] Furthermore, the washer body comprises a flat washer, the edge of which is provided with a circle of conical connecting parts, and the spherical cover is connected to the bottom edge of the conical connecting part.

[0008] Furthermore, the angle between the tapered connecting portion and the flat washer is 120°-150°.

[0009] The utility model also provides an isolating switch which adopts the elastic washer.

[0010] Compared with the prior art, the utility model has the following advantages: it can balance the electric field distribution. Due to the existence of the spherical cover, when the electrical equipment is working, the electric field is evenly distributed on the surface of the spherical cover, reducing the problem of uneven electric field distribution; during the operation of the electrical equipment, since fasteners such as bolts and nuts are installed in the spherical cover, their sharp corners are completely contained in the spherical cover. In this way, the unbalanced electric field caused by the sharp corners of the bolts and nuts is effectively shielded by the spherical cover, thereby further optimizing the electric field distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional view of the elastic gasket of the utility model;

[0012] Figure 2 yes Figure 1 The main view;

[0013] Figure 3 It is a three-dimensional schematic diagram of the isolating switch of the utility model;

[0014] In the figure: 1. isolating switch; 2. elastic gasket; 21. opening; 22. cylindrical sheath; 23. insulating cover; 24. bolt; 3. isolating knife switch; 4. circuit breaker outlet seat. DETAILED DESCRIPTION

[0015] See also Figure 1-2 The present embodiment is an elastic gasket for electrical equipment, including a gasket body, a spherical cover is provided at the edge of the gasket body, an opening 21 is provided at the top of the spherical cover, and the bottom end of the spherical cover is fixedly connected to the gasket body. During installation, bolts and other fasteners are inserted into the opening 21 and pass through the elastic gasket 2.

[0016] Furthermore, the spherical cover and the gasket body are integrally formed by drawing and pressing.

[0017] Furthermore, the gasket body and the spherical cover are both made of 304 stainless steel, which has excellent corrosion resistance and mechanical strength.

[0018] Furthermore, the gasket body includes a flat gasket, the edge of which is provided with a circle of conical connecting parts, and the spherical cover is connected to the bottom edge of the conical connecting part. By providing the conical connecting part, the gasket body can have a certain ductility when under pressure, thereby making the gasket body elastic; thereby providing a buffering and shock absorbing effect, and effectively protecting the stable operation of the electrical equipment.

[0019] Furthermore, the angle between the tapered connecting portion and the flat washer is 120°-150°.

[0020] In actual use, the utility model can be customized according to the requirements of different electrical equipment.

[0021] For example, the size of the gasket and the design of the elastic structure can be adjusted according to parameters such as the voltage level and current size of the equipment.

[0022] The shape and size of the bubble can also be adjusted according to actual needs to ensure that it can effectively equalize the electric field and accommodate the fasteners. Figure 3 The present embodiment further provides an isolating switch 1, comprising a frame, an isolating knife switch 3 is provided at the upper end of the frame, and a circuit breaker outlet seat 4 is provided at the lower end. The bolts 24 used for the blades of the isolating knife switch 3 are fastened and connected through the above-mentioned elastic washers 2, and the connection bolts 24 on the circuit breaker outlet seat 4 are also fastened by the above-mentioned elastic washers 2.

[0023] By shielding the sharp corners of the fasteners inside the spherical cover, the influence of the sharp corners on the electric field distribution is effectively reduced, the uniformity of the electric field distribution is further improved, and the partial discharge index of the electrical equipment can be effectively reduced.

Claims

1. An elastic gasket for electrical equipment, characterized in that: It comprises a gasket body. A circle of spherical cover is arranged at the edge of the gasket body. An opening is arranged at the top of the spherical cover. The bottom end of the spherical cover is fixedly connected with the gasket body.

2. The elastic gasket for electrical equipment according to claim 1, characterized in that: The spherical cover and the gasket body are formed by drawing and pressing in one piece.

3. The elastic gasket for electrical equipment according to claim 1, characterized in that: The washer body and the spherical cover are both made of 304 stainless steel.

4. The elastic gasket for electrical equipment according to claim 1, characterized in that: The washer body comprises a flat washer, the edge of which is provided with a circle of conical connecting parts, and the spherical cover is connected to the bottom edge of the conical connecting part.

5. The elastic gasket for electrical equipment according to claim 4, characterized in that: The angle between the tapered connecting portion and the flat washer is 120°-150°.

6. An isolating switch, characterized in that: The elastic gasket according to any one of claims 1 to 5 is used.

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