Gas pressure reducing valve and 3D printing manufacturing method thereof

Abstract

The invention relates to the technical field of pressure reducing valves, and provides a gas pressure reducing valve and a 3D printing manufacturing method thereof. The gas pressure reducing valve isof a 3D printing integrated structure and comprises a valve body, at least one stage of gas flow channel is formed in the valve body, and the gas flow channel is of a spiral structure; and the diameter of the gas flow channel is gradually increased from the first end of the gas flow channel to the second end of the gas flow channel. The gas pressure reducing valve and the internal gas flow channelare designed to be of an integrally-formed structure, so that the overall strength is improved to the maximum extent, higher atmospheric pressure can be borne, and mechanical connection is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of pressure reducing valves, in particular to a gas pressure reducing valve and a 3D printing manufacturing method thereof. Background technique [0002] In recent years, with the rapid development of the national hydrogen fuel vehicle industry, there is an obvious demand for high-pressure gaseous hydrogen storage technology. High-pressure hydrogen storage valves are key components of fuel cell vehicles. At present, the valves used at home and abroad are mainly in two specifications of 35Mpa and 70Mpa, and most of these two pressure reducing valves rely on foreign imports. The domestic technology for manufacturing such pressure reducing valves lags far behind the demand for high-pressure hydrogen storage applications. With the layout of supporting facilities such as hydrogen refueling stations, the hydrogen storage pressure of pressure vessels has even reached 90-100Mpa. Higher hydrogen storage pressure can...

AI Technical Summary

Problems solved by technology

Due to the characteristics of traditional processing, the gas flow path of the pressure reducing valve is straight, and the direction of the flow path can only be changed by module assembly; since the pressure reducing valve is a combination of a large number of parts through threads and bolts, the entire pressure reducing valve When subjected to impact and extrusion, the connection is not strong enough to protect the whole from damage

And due to the requirements for light weight and small size pressure reducing valve, the thread of some connecting parts can only guarantee the basic connection strength. When damaged by external force, once the thread is damaged, fatal damage will occur, and the pressure reducing valve will be scrapped

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