Multi-stage pilot-operated type gas pressure reducer
A pilot-operated, pressure-reducer technology, applied in safety valves, engine components, balance valves, etc., can solve the problems of low control accuracy, large space occupation, and large appearance, and achieve improved sensitivity, low manufacturing cost, and simple and compact structure. Effect
Active Publication Date: 2016-05-18
HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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Problems solved by technology
For the application of a high-pressure 40MPa gas pressure reducer to the system, two independent pressure reducers are generally connected in series to realize the secondary pressure reduction function, which takes up a lot of space, has low control accuracy, and has a large and clumsy appearance.
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[0011] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0012] A multi-stage high-pressure pilot-operated gas pressure reducer, such as figure 1 As shown, it includes a housing 23, the first handle 1 is installed on the upper part of one side of the housing 23, the first pressure regulating spring 2 is installed on the lower side of the first handle 1, and the inner side of the housing 23 is located at the lower part of the first pressure regulating spring 2 to install a diaphragm 3. The lower part of the diaphragm 3 is installed with the ejector rod 4, and the inner side of the housing 23 is located at the ejector rod 4 to open a flow chamber 7, and the inner side of the housing 23 is located at the lower part of the eje...
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The invention discloses a multi-stage pilot-operated type gas pressure reducer. The multi-stage pilot-operated type gas pressure reducer comprises a housing. The upper part on one side of the housing is equipped with a first handle. The lower side of the first handle is equipped with a first pressure regulating spring. The position, where the inside of the housing is located at the lower part of the first pressure regulating spring, is equipped with a diaphragm. The lower part of the diaphragm is equipped with an ejector rod. The position, where the inside of the housing is located at the ejector rod, is provided with a flow cavity. The position, where the inside of the housing is located at the lower part of the ejector rod, is provided with a first valve seat. The multi-stage pilot-operated type gas pressure reducer has following beneficial effects: working pressure is within the range of ultralow pressure 0.04MPa + / -3%; the multi-stage pilot-operated type gas pressure reducer is high in precision; the success of a system is decided by secondary pressure reduction; and an ordinary pressure reducer is hard to keep stability of output pressure in harsh conditions such as ambient temperature and vibration.
Description
technical field [0001] The invention relates to a gas pressure reducer, in particular to a multi-stage high pressure pilot type gas pressure reducer. Background technique [0002] With the continuous in-depth development of China's aerospace technology, the valve manufacturing industry has also achieved unprecedented development. In various types of pipeline systems, the demand for high-pressure gas source and low-pressure use is increasing, that is to say, after the high-pressure gas from the high-pressure gas cylinder is decompressed by the pressure reducer, it meets the requirements of the ultra-low pressure and small flow fuel system. Requirements. Moreover, the pressure reducer is required to be able to stabilize the pressure and flow rate of the system medium within a certain accuracy range under the harsh space working environment. For the application of a high-pressure 40MPa gas pressure reducer to the system, two independent pressure reducers are generally connect...
Claims
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Inventor 李海英庞晓丽孟嘉嘉张洪涛陈正立刘伟路超刘宝林李医中邵真贵
Owner HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH