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Air pressure reducer

A decompression device and gas technology, applied in the direction of gas/liquid distribution and storage, pressure vessels, fixed-capacity gas storage tanks, etc., can solve the problems of small flow, large volume, difficult to meet the use requirements, etc., and achieve simple adjustment Effect

Inactive Publication Date: 2006-08-16
周继光
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the gas decompression devices of compressed natural gas (CNG) for vehicles in my country mainly adopt two-stage or three-stage decompression methods to reduce the natural gas with a pressure of 20 MPa to 0-0.4 MPa. These gas decompression devices mainly have large volume and complex structure. , small flow rate, low-pressure gas outlet pressure is difficult to adjust and control, and it is difficult to meet the use requirements of 0.4-1.2Mpa
Therefore, when the existing gas decompression device is in use, its use effect is still not ideal enough.

Method used

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Embodiment Construction

[0014] Embodiment of the present invention: the pressure reducing valve body (1) that is provided with high-pressure gas inlet (2) and low-pressure gas outlet (3) can adopt metal or plastic material to make, and when making, cut off the outlet of low-pressure gas outlet (3) The ratio of the area to the inlet cross-sectional area of ​​the high-pressure gas inlet (2) is made to be greater than or equal to 200 times, and the inlet cross-sectional area of ​​the high-pressure gas inlet (2) is preferably made to be within 0.15cm 2 ~0.22cm 2 adjustable, the outlet cross-sectional area of ​​the low-pressure gas outlet (3) is made to be greater than or equal to 45cm 2 ; Then make a valve port (4) between the high-pressure gas inlet (2) and the low-pressure gas outlet (3), install a valve stem (5) that can close or open the valve port (4) on the valve port (4) , connect a pressure balance diaphragm (6) that can be installed and fixed on the pressure reducing valve body (1) on the valve...

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Abstract

In the invention, a valve port is disposed between a high-pressure gas inlet and a low-pressure gas outlet. A valve stem disposed on the valve port can close or open the valve port. A pressure-balancing diaphragm mounted on a pressure-reducing valve is connected on the valve stem. A support board is disposed on the pressure-balancing diaphragm. An outlet pressure-regulating screw is disposed on the pressure-reducing valve. A fore-balancing spring is disposed between the support board and the outlet pressure-regulating screw.

Description

Technical field: [0001] The invention relates to a gas decompression device used for decompression of air, oxygen, nitrogen or compressed natural gas (CNG), in particular to a gas decompression device used in a fuel supply system of a natural gas vehicle. Background technique: [0002] At present, the gas decompression devices of compressed natural gas (CNG) for vehicles in my country mainly adopt two-stage or three-stage decompression methods to reduce the natural gas with a pressure of 20 MPa to 0-0.4 MPa. These gas decompression devices mainly have large volume and complex structure. , small flow rate, low-pressure gas outlet pressure is difficult to adjust and control, and it is difficult to meet the use requirements of 0.4-1.2Mpa. Therefore when existing gas decompression device is in use, its use effect is still not ideal enough. Invention content: [0003] The object of the present invention is to provide a gas decompression device with simple structure, small volum...

Claims

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Application Information

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IPC IPC(8): F17C7/00F17C13/04
Inventor 周继光周力鲍荣
Owner 周继光