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A hydrogen pressure reducing valve capable of maintaining stable flow rate and outlet pressure and its method

A pressure reducing valve, hydrogen technology, applied in functional valve types, valve devices, safety valves, etc., can solve problems such as pressure and flow changes, inability to export gas flow and pressure stability, and shortened service life.

Active Publication Date: 2021-04-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the commonly used hydrogen pressure reducing valves cannot keep the flow and pressure of the outlet gas stable. When the pressure of the hydrogen gas changes, the gas pressure and flow at the outlet will change accordingly.
This will reduce the stability and service life of the hydrogen pressure reducing valve

Method used

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  • A hydrogen pressure reducing valve capable of maintaining stable flow rate and outlet pressure and its method
  • A hydrogen pressure reducing valve capable of maintaining stable flow rate and outlet pressure and its method
  • A hydrogen pressure reducing valve capable of maintaining stable flow rate and outlet pressure and its method

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Embodiment Construction

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention, but do not limit it in any way.

[0037] Such as Figure 1~4 Shown is a hydrogen pressure reducing valve capable of maintaining a stable flow rate and outlet pressure, which includes a valve body 1 , an adjustment cover 3 , a push rod 6 , a valve core 7 and an inlet cover 8 . Along the vertical direction, the valve body 1 is sequentially assembled with an adjusting cover 3 , a push rod 6 , a valve core 7 and an inlet cover 8 from top to bottom. The central axes of the valve body 1, the regulating cover 3, the ejector rod 6, the valve core 7 and the inlet cover 8 coincide, that is, the components are coaxially assembled.

[0038] The valve body 1 is provided with a cavity in the axial direction, and the side wall of the valve bo...

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Abstract

The invention discloses a hydrogen decompression valve capable of maintaining stable flow rate and outlet pressure and a method thereof. The valve body of the decompression valve is coaxially assembled with an adjustment cover, a push rod, a valve core and an inlet cover sequentially from top to bottom. A valve body outlet is provided on the side wall of the valve body, and a control tip is provided at the bottom of the valve core, and the control tip at the bottom of the valve core closes the control passage in a non-working state. The gap between the control tip and the top groove is an intermediate channel, the valve core is provided with a first gas channel, and the end of the regulating cover away from the valve body is coaxially connected with a threaded rod. A second gas passage is left between the regulating cover and the disc-shaped head, and a third gas passage is opened through the disc-shaped head. The pressure reducing valve of the present invention has simple structure, high reliability, and long service life. When the pressure at the inlet increases due to external reasons, the flow and pressure at the outlet can also be kept stable.

Description

technical field [0001] The invention relates to a decompression valve device, in particular to a hydrogen decompression valve capable of maintaining a stable flow rate and outlet pressure and a method thereof. Background technique [0002] With the increasing expansion of the hydrogen energy industry and the large-scale development of hydrogen energy, the selectivity of a large number of components related to the hydrogen medium has also greatly increased. However, as a flammable and explosive substance, how to use hydrogen in use? Ensuring its security has become an inevitable factor. In the field of hydrogen energy, the storage and utilization of high-pressure hydrogen is the most economical and reasonable utilization method under the current state of technology, and has been verified by a large number of applications. During the use of high-pressure hydrogen, the hydrogen is stabilized to a pressure suitable for specific devices. And flow requires a pressure reducing val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/32
CPCF16K17/32
Inventor 张志新王春鹏李纯杰郑水英毛炜炜
Owner ZHEJIANG UNIV
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