A two-stage gas energy-saving valve

Abstract

The invention discloses a double-stage gas energy-saving valve. The double-stage gas energy-saving valve comprises a pressure reducing valve main body (1), wherein the pressure reducing valve main body (1) is provided with a main air inlet (101) and a main air outlet (102); one end of the pressure reducing valve main body (1) is provided with a first enclosed cavity (2) for reducing the pressure of gas; the air inlet (203) of the first enclosed cavity is communicated with the main air inlet (101); the first enclosed cavity (2) is communicated with a second enclosed cavity (3); the other end of the pressure reducing valve main body (1) is provided with the second enclosed cavity (3) for reducing the pressure of gas; the air outlet (304) of the second enclosed cavity is communicated with the main air outlet (102). The double-stage gas energy-saving valve has the advantages that secondary pressure reduction of gas is finished in the same pressure reducing valve, so that the impact force and flow speed of output low-pressure gas are small and low.

Description

technical field [0001] The field of the invention relates to a two-stage gas energy saving valve. Background technique [0002] The gas pressure reducing valve is a valve that reduces the inlet pressure to a certain outlet pressure by adjusting, and relies on the energy of the gas itself to automatically maintain the outlet pressure. In order to realize the decompression of gas, the gas decompression valve needs to be provided with a gas decompression chamber and a decompression chamber, which can only complete the gas decompression process once. The existing gas pressure reducing valve is only provided with a gas pressure reducing cavity, which means that the existing gas pressure reducing valve can only decompress the high-pressure gas entering the air inlet once, that is, from the inlet of the gas pressure reducing valve. The high-pressure gas entering the gas port is only decompressed once in the decompression cavity, and then directly output from the outlet on the gas ...

AI Technical Summary

Problems solved by technology

The deficiency that it exists is: the low-pressure gas momentum output on the outlet on the gas pressure reducing valve is too large and the flow velocity is too fast, causing the gas flow rate per unit time to be too large, resulting in waste of gas

[0003] If there is a need to decompress the high-pressure gas for the second time, it is generally necessary to connect two gas pressure reducing valves in series to realize the second decompression of the high-pressure gas, just as the decompression valve disclosed in the patent document CN203847998U , but in this way, it is easy to leak air at the connection between the two pressure reducing valves, resulting in waste of gas and potential safety hazards. Another point is that two gas pressure reducing valves need to be used to complete two pressure reducing valves. Pressure valve, the cost required to achieve gas decompression is relatively high

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