Damping system for high-voltage alternating-current circuit breaker

Abstract

The utility model relates to a damping system for a high-voltage alternating-current circuit breaker, which comprises a circuit breaker support, a post insulator is arranged at the upper end of the circuit breaker support, an arc extinguish chamber is arranged in the post insulator, and an operating mechanism is arranged beside the circuit breaker support. The damping assembly is arranged at the bottom end of the circuit breaker support and comprises an upper mounting plate, a steel wire rope damper and a lower mounting plate which are sequentially distributed from top to bottom, the upper mounting plate is fixed to the bottom end of the circuit breaker support, the lower mounting plate is fixed to the ground, and the upper side and the lower side of the steel wire rope damper are fixed to the upper mounting plate and the lower mounting plate respectively. Compared with the prior art, the breaker support has the advantages that the damping assembly is additionally arranged at the bottom end of the breaker support, the steel wire rope damper is used for achieving the shock insulation effect, the influence of an earthquake on the product strength is greatly reduced, and the safety of the product under the action of the earthquake is improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, and in particular to a vibration damping system for high-voltage AC circuit breakers. Background Technology

[0002] Due to their structural characteristics, 252kV porcelain-column circuit breakers require increased porcelain bushing height when used in high-altitude areas. Furthermore, the significant weight of their arc-extinguishing chambers leads to substantial bending moments in the bottom bushing under seismic loads.

[0003] Currently, existing porcelain column circuit breakers mainly rely on the product's own strength design to meet mechanical and seismic loads. For existing high-altitude products, without adding a vibration damping system, the column porcelain bushing needs to have a very thick wall or very high strength. Current technology and manufacturing methods make it difficult to guarantee their reliability and economy. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a telescopic transport beam that can be applied to various gantry cranes.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a telescopic transport beam, the innovation of which lies in: including

[0006] A circuit breaker bracket, wherein a post insulator is provided at the upper end of the circuit breaker bracket, an arc-extinguishing chamber is provided inside the post insulator, and an operating mechanism is provided on the side of the circuit breaker bracket.

[0007] A shock-absorbing assembly is installed at the bottom of a circuit breaker bracket. The shock-absorbing assembly includes an upper mounting plate, a wire rope shock absorber, and a lower mounting plate arranged sequentially from top to bottom. The upper mounting plate is fixed to the bottom of the circuit breaker bracket, the lower mounting plate is fixed to the ground, and the upper and lower sides of the wire rope shock absorber are fixed to the upper mounting plate and the lower mounting plate, respectively.

[0008] Furthermore, there are a total of eight wire rope shock absorbers, which are distributed in a rectangular shape around the upper mounting plate. The upper mounting plate is a rectangular plate, and each pair of wire rope shock absorbers is distributed on the same side of the upper mounting plate.

[0009] The advantages of this utility model are: by adding a shock-absorbing component at the bottom of the circuit breaker bracket and using a wire rope shock absorber to achieve the effect of vibration isolation, the impact of earthquakes on the product strength is greatly reduced, and the safety of the product under earthquake action is improved.

[0010] By designing the quantity and distribution of wire rope shock absorbers, both the shock absorption requirements and the stiffness requirements for long-term product stability are met. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the vibration damping system for the high-voltage AC circuit breaker of this utility model.

[0012] Figure 2 This is a schematic diagram of the shock absorption component of this utility model.

[0013] Figure 3 This is a schematic diagram showing the distribution of the wire rope shock absorber in this utility model. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] like Figures 1-3 The above describes a vibration damping system for a high-voltage AC circuit breaker, comprising:

[0016] A circuit breaker support 1 is provided, with a post insulator 2 at the upper end of the circuit breaker support 1, an arc-extinguishing chamber 3 is provided inside the post insulator 2, and an operating mechanism 4 is provided on the side of the circuit breaker support 1.

[0017] A shock-absorbing assembly 5 is installed at the bottom of the circuit breaker bracket 1, such as Figure 2 As shown in the schematic diagram, the shock absorption assembly 5 includes an upper mounting plate 51, a wire rope shock absorber 52, and a lower mounting plate 53 arranged sequentially from top to bottom. Both the upper mounting plate 51 and the lower mounting plate 53 are rectangular plates, and the size of the upper mounting plate 51 is smaller than that of the lower mounting plate 53, so that the lower mounting plate 53 can provide a more stable support. The upper mounting plate 51 is fixed to the bottom end of the circuit breaker bracket 1 by bolts and nuts, and the lower mounting plate 53 is fixed to the ground by bolts. The upper and lower sides of the wire rope shock absorber 52 are fixed to the upper mounting plate 51 and the lower mounting plate 53 by welding, respectively.

[0018] There are eight wire rope vibration dampers 52 in total, arranged in a rectangular shape around the upper mounting plate. Each pair of wire rope vibration dampers 52 is grouped together and distributed on the same side of the upper mounting plate 51. By designing the number and distribution of the wire rope vibration dampers, both the vibration damping requirements and the stiffness requirements for the long-term operational stability of the product are met.

[0019] The vibration damping system for high-voltage AC circuit breakers of this utility model achieves the effect of vibration isolation by adding a vibration damping component at the bottom of the circuit breaker bracket 1 and using a wire rope vibration damper 52. When an earthquake occurs, the wire rope vibration damper 52 undergoes tensile and compressive deformation, converting part of the energy into its own heat energy. The remaining energy is greatly reduced when it is transferred to the circuit breaker product. In addition, the rigidity design of the circuit breaker product itself can meet the seismic resistance requirement of ETG-0.5g, greatly reducing the impact of earthquakes on the product strength and improving the safety of the product under seismic action.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A vibration damping system for a high-voltage AC circuit breaker, characterized in that: include A circuit breaker bracket, wherein a post insulator is provided at the upper end of the circuit breaker bracket, an arc-extinguishing chamber is provided inside the post insulator, and an operating mechanism is provided on the side of the circuit breaker bracket. A shock-absorbing assembly is installed at the bottom of a circuit breaker bracket. The shock-absorbing assembly includes an upper mounting plate, a wire rope shock absorber, and a lower mounting plate arranged sequentially from top to bottom. The upper mounting plate is fixed to the bottom of the circuit breaker bracket, the lower mounting plate is fixed to the ground, and the upper and lower sides of the wire rope shock absorber are fixed to the upper mounting plate and the lower mounting plate, respectively.

2. The vibration damping system for high-voltage AC circuit breakers according to claim 1, characterized in that: There are eight wire rope shock absorbers in total, arranged in a rectangular shape around the upper mounting plate. The upper mounting plate is a rectangular plate, and each pair of wire rope shock absorbers is distributed on the same side of the upper mounting plate.

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