Gas and gas appliance valve pressure relief device

A pressure relief device and valve technology, which is applied in the direction of preventing volumetric instrument damage, etc., can solve the problems of insufficient opening of the valve, failure to open the valve, and large power consumption, etc., and achieve the effects of fast pressure relief, stable work, and good sensitivity

CN101514914BActive Publication Date: 2010-08-25LIAONING SCALER TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2010-08-25

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Abstract

The invention discloses a gas and gas appliance valve pressure relief device. A pressure relief body is arranged in a valve body, a pressure relief rubber mat is pressed on the pressure relief body, a tray and a pressure plate are arranged on the rubber mat, and a pressure spring is arranged between the pressure plate and the tray. As the pressure relief device is arranged in the valve body, whenthe pressure relief device is driven, a transfer torque screw rod is subjected to small rotary torque, the pressure relief rubber mat on the pressure relief body is immediately separated from the plane of a gas port of the tray to generate a gap, and the gap expands continually; the high-pressure gas in a gas inlet box quickly enters a lower-pressure lateral box along three arc merohedral groovesof the pressure relief body, and instantly the two boxes have equal pressure; and the pressure spring resets the tray to the pressure relief body, the tray does not bear the pressure any longer, a valve port rubber mat on the tray is separated from a valve port under the dead weight of the tray and the valve opening rotation of the transfer torque screw rod continuously subjected to the torque, and the valve is accurately opened. The device has the advantages of good sensitivity, quick pressure relief speed and stable work, and is applicable to being arranged at a gas outlet end and a valve.
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Description

technical field

[0001] The invention relates to a metering instrument component device, in particular to a valve pressure relief device for gas and gas appliances. Background technique

[0002] Valve pressure relief device for gas and gas appliances, used at the gas outlet. Existing gas and gas appliance valves, as shown in Figure 1, in the valve closed state, the pressure of the intake chamber can reach 50kPa at most according to the national standard. The pressure head equipped with the rubber pad is subjected to a large internal pressure, and a large driving force is required when the battery-powered electric gas valve is opened. Often, the valve is not opened properly or even does not open within the designed valve opening time. The power consumption is large, and the driving power is generally two 3.6V lithium batteries and 3.0V~6.0V alkaline batteries, which are difficult to meet the design power requirements. Contents of the invention

[0003] Aiming at the defect...

Examples

Embodiment Construction

[0011] The structure of the present invention is illustrated in conjunction with the accompanying drawings.

[0012] A valve pressure relief device for gas and gas appliances, as shown in Figure 2, wherein the valve body, gas meter joint, and lead screw are the same as the existing pressure relief device, and a pressure relief valve with a pressure relief gap is installed in the valve body 8. body 4, the pressure relief body 4 is shaped on a missing surface, and the arcuate area is not less than 4% of the pressure relief body 4 cross-sectional area. Pressure relief rubber pad 2 is placed on the pressure relief body 4, the pressure relief rubber pad 2 is equipped with a tray 3, the tray 3 and the pressure relief body 4 are a dynamic fit gap, the air port plane of the tray 3 and the pressure relief glue on the pressure relief body 4 The gasket 2 forms a seal, and the three ventilation gaps of the pressure relief body 4 form a ventilation channel. The valve port rubber pad 5 on ...