Gas high-sealing low-loss pressurizing system and method

A supercharging system and high-sealing technology, which is applied in the direction of liquid variable displacement machinery, pump devices, machines/engines, etc., can solve the problems of gas compression and supercharging, reduce volume, reduce consumption, and reduce expensive gas consumption Effect

Inactive Publication Date: 2019-11-19
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the suction inlet pressure of the metal diaphragm compressor must be close to or higher than the normal pressure, the process gas can be compressed and boosted. Unlike the vacuum pump, the low-pressure gas in the fixed container gas tank cannot be completely sucked out and compressed to high pressure.
Although the vacuum pump can completely suck out the low-pressure gas in the fixed container gas tank, the exhaust outlet pressure must be the normal pressure of the atmospheric environment, so the gas cannot be compressed and boosted.

Method used

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  • Gas high-sealing low-loss pressurizing system and method

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Experimental program
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Effect test

Embodiment 1

[0030] In order to perform dual functions of vacuuming and compression boosting for high-purity gases, expensive gases and dangerous gases, it reduces volume, reduces loss, and facilitates storage, transportation and process treatment. The invention provides a process flow diagram of a gas high-tightness and low-loss supercharging system, as shown in the accompanying drawings. The low-loss pressurization system of the present invention mainly includes at least one low-pressure tank, one vacuum pump, one pressure accumulator, one metal diaphragm compressor, one high-pressure tank, valves, pipelines and instruments, and the outlet of the low-pressure tank Connect to the inlet of the vacuum pump, the outlet of the vacuum pump to the inlet of the bellows air chamber in the accumulator inner chamber, the outlet of the bellows air chamber in the accumulator inner chamber to the inlet of the metal diaphragm compressor, the outlet of the diaphragm compressor to the high-pressure tank, ...

Embodiment 2

[0034] The difference between this embodiment and Embodiment 1 is that when the low-pressure process gas in the low-pressure tank needs to be further compressed with a large compression ratio and pressurized into a high pressure (such as several or tens of MPa), the vacuum pump first The gas in the low-pressure tank is pumped into the pressure accumulator, and then the normal pressure or higher than normal pressure gas in the pressure accumulator is driven by gravity or spring force into the metal diaphragm compressor, and compressed and boosted to the high-pressure tank. At the end of compression, almost all the gas in the bellows chamber of the accumulator is sent to the diaphragm compressor for compression.

[0035] When it is necessary to pressurize the low-pressure gas in the low-pressure tank into high-pressure storage, if the gas pressure in the low-pressure tank is close to or lower than the normal pressure, the normal pressure in the low-pressure tank can be reduced by...

Embodiment 3

[0039] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that when the pressure of the process gas in the low-pressure tank is higher than the normal pressure, the process gas can be sucked out without a vacuum pump to vacuum the low-pressure tank. And the automatic pressure monitoring method, the pressure of the gas in the low-pressure tank can flow to the inlet of the diaphragm compressor to ensure the inlet pressure requirements of the diaphragm compressor.

[0040] A branch is connected in parallel at the outlet of the low-pressure tank, which directly bypasses the inlet of the diaphragm compressor, and a bypass valve is installed. A pressure sensor is installed on the low-pressure tank to monitor the pressure of the process gas in the low-pressure tank in real time. When the gas needs to be pressurized, if the gas in the low-pressure tank is higher than the normal pressure, the flow direction can be controlled by opening and closing the valve (aut...

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Abstract

The invention discloses a gas high-sealing low-loss pressurizing system and method. The system is composed of a low-pressure tank, a vacuum pump, a pressure accumulator, a diaphragm compressor, a high-pressure tank, valves, pipelines, instruments and the like. As the vacuum pump vacuumizes the low-pressure tank with the fixed volume, low-pressure process gas is exhausted and then fed into the pressure accumulator with the variable volume, the process gas is fed into the metal diaphragm compressor through the pressure accumulator to be compressed and exhausted into the high-pressure tank, the dual functions of vacuumizing and compression are achieved, and gas residues are reduced. Variable volume compensation is carried out by the pressure accumulator through a metal corrugated pipe diaphragm, and the requirements of an outlet of the vacuum pump and a compression inlet of the metal diaphragm for the pressure of the process gas are guaranteed. The whole pressurizing system is sealed by an all metal material, and gas leakage and permeation are reduced. The system and method are used for carrying out compression pressurization, volume reduction storage, transportation and the like on various kinds of high-purity gas, expensive gas, dangerous gas and radioactive gas.

Description

technical field [0001] The invention relates to the field of gas treatment and transportation in fine chemical industry and nuclear chemical industry, in particular to a high-seal and low-loss pressurization system and method, which can compress and pressurize various high-purity gases, expensive gases, dangerous gases and radioactive gases. The system and method for loss reduction, volume reduction storage and transportation can be used in various occasions such as oil and gas, gas fine chemical industry, electronic gas, nuclear chemical industry and the like. Background technique [0002] In industries such as petrochemical, fine chemical, aerospace, electronic gas and nuclear industries, it is very important to pressurize, store and transport process gases such as high-purity gases, very expensive gases, radioactive and highly toxic dangerous gases, etc. Big demand. Since the suction inlet pressure of the metal diaphragm compressor must be close to or higher than the nor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B41/06F04B41/02F04B37/14F04B37/12
CPCF04B37/12F04B37/14F04B41/02F04B41/06
Inventor 李炳林甯尤军王洪郑华林丁亮亮胡腾
Owner NUCLEAR POWER INSTITUTE OF CHINA
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