A protection valve mechanism of a plug-in molded case circuit breaker
A molded case circuit breaker, plug-in technology, applied in circuits, protection switches, emergency protection devices, etc., can solve potential safety hazards, threaten the life safety of operators and other problems, achieve good protection, convenient operation, and avoid the threat of electric shock Effect
Active Publication Date: 2018-07-20
湖北世纪森源电气集团有限公司
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Problems solved by technology
However, after the operator pulls the molded case circuit breaker body out of the plug-in base, the contacts on the base will be exposed, and the contacts on the incoming line side are live, which undoubtedly poses a great potential safety hazard and threatens the safety of the operator. life safety
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[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0031] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, a protective valve mechanism of a plug-in molded case circuit breaker includes a mechanism box 2 and a valve assembly 3; the valve assembly 3 is arranged in the inner cavity of the mechanism box 2; Mechanism; In this embodiment, in order to facilitate the installation of the protective valve mechanism of the plug-in molded case circuit breaker, a mounting plate 1 is installed on the inlet side of the plug-in base 9 of the molded case circuit breaker, and the plug-in molded case circuit breaker The protection valve mechanism of the plug-in molded case circuit breaker is fixed on the installation plate 1; during installation, the inst...
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The invention relates to a protective valve mechanism of a plug-pull molded case circuit breaker. The protective valve mechanism comprises a mechanism box and a valve assembly, wherein the valve assembly comprises a baffle plate and an ejector mechanism; when a molded case circuit breaker body is plugged into a plug-pull base of the molded case circuit breaker, the baffle plate on the valve assembly is located in the mechanism box; and when the molded case circuit breaker body is pulled away from the plug-pull base of the molded case circuit breaker, the baffle plate on the valve assembly extends out of the mechanism box through the ejector mechanism and shields a contact exposed at an inlet side of the plug-pull base of the molded case circuit breaker. The protective valve mechanism has the beneficial effects that the molded case circuit breaker body is pulled out of the plug-pull base of the molded case circuit breaker, the ejector mechanism is pushed to push the baffle plate out of the mechanism box and the contact exposed at the inlet side of the plug-pull base of the molded case circuit breaker is shielded through the effects of the baffle plate, the mechanism box and the ejector mechanism, so that an electric shock threat to operating personnel is avoided; and furthermore, the protective valve mechanism also has the characteristics of being simple in structure and convenient to operate.
Description
technical field [0001] The invention relates to the field of complete switchgear and control equipment, in particular to a protective valve mechanism of a plug-in molded case circuit breaker. Background technique [0002] The current fixed-interval low-voltage complete switchgear generally adopts a plug-in molded case circuit breaker, which is composed of a molded case circuit breaker body and a plug-in base. The advantage of this type of circuit breaker is that when the circuit breaker needs to be inspected and maintained, the operator can easily remove the circuit breaker body from the plug-in base. However, after the operator pulls the molded case circuit breaker body out of the plug-in base, the contacts on the base will be exposed, and the contacts on the incoming line side are live, which undoubtedly poses a great potential safety hazard and threatens the safety of the operator. life safety. Contents of the invention [0003] The technical problem to be solved by t...
Claims
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IPC IPC(8): H01H71/02
CPCH01H71/025
Inventor 王蔚叶义胜王雄
Owner 湖北世纪森源电气集团有限公司