Fuel gas plug valve

Abstract

The invention discloses a fuel gas plug valve, and belongs to the field of plug valves. A plug protective sleeve of a gas sensor is mounted on the upper side of a plug valve body, and an open circuitcontroller in an external chamber is electrically connected with the gas sensor through an external controller. The gas sensor transfers fuel gas leakage information to the external controller, the external controller transfers alarm information to the open circuit controller in the external chamber, and the open circuit controller in the external chamber cuts off an indoor power supply to minimize the occurring probability of risks; a fuel gas leakage auxiliary alarm mechanism is additionally arranged on the plug valve body, so a alarm gas bag can be supported by a fuel gas when fuel gas leakage occurs, and thus the alarm gas bag is subjected to self deformation to extend to the outer side of the plug valve body, the reminder is timely and obvious, the fuel gas leakage alarm can be effectively assisted, users are reminded timely to take safety measures such as overhaul, and the potential safety hazard of the gas leakage caused by improper use or installation problems is greatly reduced.

Description

technical field [0001] The present invention relates to the field of plug valves, and more particularly, to a gas plug valve. Background technique [0002] The plug valve is a rotary valve in the shape of a closing member or a plunger. By rotating 90 degrees, the channel port on the valve plug is the same or separate from the channel port on the valve body, so as to realize the opening or closing of a valve. [0003] A plug valve is a valve that uses a plug body with a through hole as an opening and closing member. The plug body rotates with the valve stem to realize the opening and closing action. Since the movement between the sealing surfaces of the plug valve has a wiping effect, it can completely prevent contact with the flowing medium when it is fully opened, so it can usually also be used for medium with suspended particles. Another important feature of the plug valve is that it is easy to adapt to the multi-channel configuration, so that one valve can obtain two, t...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a gas cock valve, which is equipped with an auxiliary gas leakage alarm mechanism on the cock valve body, which can deform itself when the gas leaks, prompting timely and Obviously, it can effectively assist the gas leakage alarm, promptly remind users to take safety measures such as maintenance, and greatly reduce the safety hazards of gas leakage caused by improper use or installation problems

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