Two-grade pressure reducing disc and pressure reducing valve

Abstract

The invention discloses a two-grade pressure reducing disc and a pressure reducing valve. The pressure reducing disc comprises a disc body, a first rotating structure, a second rotating structure andan airflow groove, wherein the disc body is provided with an upper bottom surface, a peripheral side surface and a lower bottom surface; the first rotating structure is annularly arranged on the upperbottom surface of the disc body with the circle center of the upper bottom surface of the disc body as the center; the second rotating structure is annularly arranged on the lower bottom surface of the disc body with the circle center of the lower bottom surface of the disc body as the center; the airflow groove is arranged on the peripheral side surface of the disc body parallel to the center axis of the disc body; and two ends thereof respectively communicate with the first rotating structure and the second rotating structure. The pressure reducing valve comprises the pressure reducing disc. The two-grade pressure reducing disc and the pressure reducing valve are simple in structure and fewer in used part; the first rotating structure and the second rotating structure are arranged on the upper bottom surface and the lower bottom surface of the disc body; after high-pressure gas enters the pressure reducing valve, the airflow flowing direction is the rotary flowing direction, so thatthe potential energy is continuously reduced in the rotating process to achieve the purpose of pressure reduction, the pressure reducing effect is obvious, and the speed is higher; and when the pressure of the introduced high-pressure gas is higher, the pressure reducing ratio is higher.

Description

technical field [0001] The invention relates to the field of a gas decompression device, in particular to a two-stage decompression plate and a decompression valve. Background technique [0002] In the prior art, common pressure reducing valves mainly include bellows type pressure reducing valves, piston type pressure reducing valves and membrane type pressure reducing valves. The bellows type pressure reducing valve is also called the direct acting pressure reducing valve. It is small in size and the most economical to use, but it is only used for the pressure reduction of high-pressure gas with medium and low flow; the piston type pressure reducing valve integrates the pilot valve and the main valve In one body, the exhaust pressure from the pilot valve acts on the piston to make the piston open the main valve. The structure of the piston pressure reducing valve is complex and uses many parts, and if the main valve is too large to open directly, it needs external force Op...

AI Technical Summary

Problems solved by technology

The bellows type pressure reducing valve is also called the direct acting pressure reducing valve. It is small in size and the most economical to use, but it is only used for the pressure reduction of high-pressure gas with medium and low flow; the piston type pressure reducing valve integrates the pilot valve and the main valve In one body, the exhaust pressure from the pilot valve acts on the piston, causing the piston to open the main valve. The structure of the piston pressure reducing valve is complicated, and many parts are used. If the main valve is too large to be opened directly, external force is needed. Open the main valve; the diaphragm pressure reducing valve integrates the pilot valve and the main valve, and replaces the piston in the piston type pressure reducing valve with a double diaphragm, which also has the disadvantages of complex structure and many parts.

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