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Low-voltage circuit breaker locking structure of nuclear power switch cabinet

A low-voltage circuit breaker and locking structure technology, applied in the field of switchgear, can solve the problems of weak anti-seismic performance and easy shaking of switchgear, and achieve the effect of improving anti-seismic performance

Active Publication Date: 2021-05-07
HENAN SENYUAN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-voltage circuit breaker locking structure of a nuclear power switchgear to solve the technical problems in the prior art that the upper part of the switchgear is easy to shake and the anti-seismic performance is weak

Method used

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  • Low-voltage circuit breaker locking structure of nuclear power switch cabinet
  • Low-voltage circuit breaker locking structure of nuclear power switch cabinet
  • Low-voltage circuit breaker locking structure of nuclear power switch cabinet

Examples

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Embodiment 1

[0037] The low-voltage circuit breaker locking structure of the nuclear power switchgear in this embodiment is a nuclear power 1E class switchgear, such as Figure 1 to Figure 3 As shown, the 1E-class switchgear for nuclear power includes a cabinet body 10 and a circuit breaker 3 arranged on a fixed plate 4 inside the cabinet. Specifically, the circuit breaker 3 is fixed on the fixed plate 4 by bolts 51 and nuts 52 .

[0038] The top limit beam 2 is also fixed on the cabinet body 10 of the switch cabinet. The top limit beam 2 includes a beam main body 21 and vertical connecting plates 22 located at both ends of the beam main body. The vertical connecting plate 22 is provided with a modulus hole 221 , the modulus hole 221 is used to correspond to the fixing hole on the column of the cabinet, and the top limit beam 2 is fixed to the column of the switch cabinet by the bolt 61 and the nut 62, so as to realize the fixing of the top limit beam in the cabinet.

[0039] Such as figu...

Embodiment 2

[0044] In this embodiment, the reinforcing rib of the L-shaped limiting member 1 is arranged at the middle position of the top surface of the plate body, and the reinforcing rib of the limiting member on the beam main body 21 is arranged at the middle position in the width direction of the connecting plate of the limiting member.

Embodiment 3

[0046] In this embodiment, the horizontal limit seat is two cuboid limit pieces respectively fixed at both ends below the top limit beam, and one side of the cuboid limit piece is used to contact the vertical side wall of the circuit breaker, for example, word beam.

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Abstract

The invention relates to a low-voltage circuit breaker locking structure of a nuclear power switch cabinet, and the structure comprises a cabinet body and a circuit breaker, wherein the bottom of the circuit breaker is fixed on the cabinet body; the switch cabinet further comprises a top limiting beam; the top limiting beam is fixed on the cabinet body, the lower part of the top limiting beam clings to the top surface of the circuit breaker, and the top limiting beam is used for limiting the circuit breaker along the vertical direction; a horizontal limiting seat is fixed on the top limiting beam, and the horizontal limiting seat is used for being in contact with two opposite vertical side walls of the circuit breaker and limiting the circuit breaker in the horizontal direction, so that the circuit breaker is limited in the vertical direction and the horizontal direction, and the upper part of the circuit breaker is not easy to shake in the switch cabinet, so the anti-seismic performance of the switch cabinet is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of switch cabinets, and in particular relates to a low-voltage circuit breaker locking structure of a nuclear power switch cabinet. Background technique [0002] In the third-generation passive nuclear power plants, nuclear power 1E-level switchgear is an important equipment for nuclear power plants, and is used to perform functions such as reactor shutdown. The anti-seismic performance of nuclear power 1E-level switchgear is directly related to the safe operation of nuclear power plants. [0003] In the existing nuclear power 1E-level switchgear, the bottom of the circuit breaker is usually fixed in the nuclear power 1E-level switchgear by bolts. Due to the high installation position and heavy weight of the circuit breaker, the center of gravity of the nuclear power switchgear is relatively high. Therefore, the upper part of the nuclear power 1E switchgear is prone to shaking, and the anti-seismic performan...

Claims

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Application Information

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IPC IPC(8): H02B1/30H02B1/32H02B1/54
CPCH02B1/30H02B1/32H02B1/54Y02E30/00
Inventor 崔晓科陈少华魏凯
Owner HENAN SENYUAN ELECTRIC CO LTD