A gas density relay with an external gas density level indicator
A technology of gas density and relay, applied in the direction of circuits, electric switches, electrical components, etc., can solve the problems of inconvenient monitoring, interference between relays and indicators, and low accuracy of meter readings, and achieve convenient monitoring, no power supply, and convenient Applied effect
Active Publication Date: 2017-08-08
SHANGHAI ROYE ELECTRICAL CO LTD
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Problems solved by technology
[0006] The present invention discloses a new scheme for the gas density relay with an external gas density level indicator, which adopts the scheme of separately designing the relay and the indicator, which solves the problem of mutual interference between the relay and the indicator in the existing integrated design scheme, and the reading of the gauge head Problems such as low accuracy and inconvenient monitoring
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Embodiment Construction
[0022] Below in conjunction with accompanying drawing, the present invention will be further described.
[0023] Such as figure 1 As shown, the present invention is provided with a schematic diagram of a gas density relay with an external gas density level indicator. The gas density relay provided with an external gas density level indicator comprises a gas density relay forming a signal communication connection and a gas density level indicator arranged outside the gas density relay. Such as figure 1 As shown, this solution uses a 4-core cable (data line) to realize the communication connection between the gas density relay and the gas density level indicator, but this solution is not limited to the connection method of the above data line, and the wireless transmission / reception port can also be used. way to transfer data, etc. figure 1It shows that the gas density relay and the gas density level indicator adopt the design idea of completely separating the structure, an...
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The invention relates to a gas density relay equipped with an external gas density level indicator. The gas density relay equipped with the external gas density level indicator comprises a gas density relay and a gas density level indicator. The gas density relay comprises an air inlet connector, a relay shell and a bourdon tube signal generation device which is arranged in the relay shell. The open end of the relay shell is provided with a relay shell pedestal in a sealing and clamping way, and the internal part is provided with a relay base. The internal part of the relay is separated into a temperature compensation airtight cavity and an air inlet cavity in a sealing way by the relay base. Temperature compensation gas is filled in the temperature compensation airtight cavity. The bourdon tube signal generation device comprises at least one bourdon tube device and an elastic sheet micro-switch. Each bourdon tube device comprises a bourdon tube body and a trigger end head. With application of the scheme of the separate design of the relay and the indicator, the problem of mutual influence of the relay and the indicator can be overcome, and the indicator can be installed at a position convenient for monitoring according to the requirements so that the gas density relay equipped with the external gas density level indicator has characteristics of accurate numerical reading and convenient monitoring.
Description
technical field [0001] The invention relates to a device for monitoring the airtight insulating gas density of electrical products, in particular to a gas density relay which realizes the separate design of a relay and a gas density level indicator, and belongs to the field of relay switches. Background technique [0002] The gas density relay is a device used to monitor the gas density and pressure of the insulating medium in the sealed insulating cavity of electrical products. The insulating medium gas in the sealed insulation chamber of electrical products is an arc extinguishing medium, and it is an indispensable gas filling to ensure the reliable operation of electrical products, especially in SF 6 / N 2 Ring network cabinets and other products. At present, most of the existing gas density relays use a pointer-type gauge reading monitoring device that is integrally connected with the relay. The gas density value is indicated by the gauge pointer on the relay shell. Thi...
Claims
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IPC IPC(8): H01H35/26H01H35/36
CPCH01H35/26H01H35/36
Inventor 金海勇
Owner SHANGHAI ROYE ELECTRICAL CO LTD