Automatic controller for lowering pressure of high-pressure gas by volume expansion

An automatic control device, expansion and decompression technology, used in auxiliary non-electrical fluid pressure control and other directions, can solve problems such as large energy loss, and achieve the effects of high energy utilization, simple device composition and efficient utilization

Inactive Publication Date: 2002-12-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, in a conventional pneumatic system, throttling to adjust the pressure will lose 5 to 10% of the system energy to overcome frictional resistance; in a high-pressure pneumatic system, the energy loss caused by throttling will be even greater

Method used

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  • Automatic controller for lowering pressure of high-pressure gas by volume expansion
  • Automatic controller for lowering pressure of high-pressure gas by volume expansion
  • Automatic controller for lowering pressure of high-pressure gas by volume expansion

Examples

Experimental program
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Embodiment Construction

[0012] Such as figure 1 As shown, the high-pressure gas volume pressure reducing device is composed of a high-pressure pneumatic switch valve 4, a controller 5, a volume expansion vessel 6, a high-pressure stop valve 2, a pressure sensor and display instruments 1 and 7, a temperature sensor and a display instrument 8, and a low pressure The shut-off valve 9, the high-pressure pipeline and the joint 3, the low-pressure pipeline and the joint 10 are composed.

[0013] The air inlet of the high-pressure pneumatic switch valve 4 is connected to the high-pressure shut-off valve 2 through a joint and a high-pressure pipeline, the air outlet is connected to the inlet of the volume expansion vessel 6 through a joint and a high-pressure pipeline, and the control end wiring is connected to the output port of the controller 5 . The high-pressure pneumatic switch valve 4 is controlled by the control signal sent by the controller 5, which is used to control the period and time of the high-pre...

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PUM

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Abstract

The invention discloses the device for automatic controlling the decompression of volume expansion of high-pressure gas. It is the ultra-high pressure pneuamtic decompression system. Based on certaincontrol requirement and control algorithm as well as the pressure data collected from the low-pressure volume expansion container, the instruction sent by the controller controls the on/off time of the high pressure pneuamtic switch value. Thus, it realizes the automatic controlling the volume decompression process of the high pressure or ultra-high pressure gas. Comparing with the method of throttling decompression, the invented method can save energy 10-35% in the decompression process. The invention possesses the features of simple equipment and easy to connect to the energy control loop.

Description

Technical field [0001] The invention relates to a high-pressure gas volume expansion and pressure reduction control method and an automatic control device. Background technique [0002] In the background art, the function closest to the present invention is a throttling type pressure regulator, that is, various gas pressure reducing valves. Although the current pressure reducing valve technology is relatively mature and can meet the application of intermittent working and only functional pneumatic systems, it realizes pressure regulation through throttling control. The throttling control is an irreversible energy change process. For a pneumatic power system with continuous work and high power performance requirements, there is a large energy loss, which is not conducive to the efficient use of the system. [0003] The component used for volume expansion and decompression is an expansion vessel. Its working principle is to adjust the output pressure of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/16
Inventor 王宣银贾光政陈鹰陶国良许宏刘昊吴根茂
Owner ZHEJIANG UNIV
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