A high-tight gas-tight rapid pressure regulation system and method

A pressure-regulating system and high-sealing technology, applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve problems such as high price, toxicity and radioactive hazards, improve technical capabilities, maintain stability, and reduce expensive The effect of gas consumption

Active Publication Date: 2021-07-13
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the neutron absorbing gas itself (such as BF 3 etc.) or its neutron-absorbing nuclear reaction products (such as helium-3 absorbing neutrons to produce tritium) have great toxicity and radioactive hazards, and are very expensive. safety, reduce the amount of neutron absorbing gas, and reduce test costs

Method used

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  • A high-tight gas-tight rapid pressure regulation system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A process flow diagram of a gas high-tightness rapid pressure regulation system, as attached figure 1 shown. The rapid pressure regulating system of the present invention is mainly composed of a gas circuit, a pressure accumulator, a pressure-stabilizing tank, two diaphragm compressors, an inflatable tank, valves, pipelines and instruments. The reaction gas screen in the reactor is connected with equipment such as the getter bed outside the reactor and the gas circulation pump through the inlet and outlet pipelines to form a gas circuit with high sealing and forced circulation. The pressure regulating branch of the gas circuit is respectively connected to the inlet of the pressure accumulator and the outlet of the gas charging tank, the outlet of the pressure accumulator is connected to the inlet of the metal diaphragm compressor, and the outlet of the metal diaphragm compressor is connected to the inlet of the gas charging tank.

[0033] For the fuel element power tra...

Embodiment 2

[0037] The difference between this embodiment and Embodiment 1 is that the present invention provides a volume compensation method through a flexible bellows to ensure the inlet pressure requirements of the diaphragm compressor when venting or pumping air from the accumulator, and also proposes a The device and method for reducing the amount of gas remaining in the pressure accumulator, the specific setting method is as follows:

[0038] In order to make all the expensive process gas in the pressure accumulator enter the metal diaphragm compressor for compression and ensure that the inlet pressure of the metal diaphragm compressor is close to normal pressure or a certain set pressure, the pressure accumulator of the present invention is designed to be variable Volume compensation form. The pressure accumulator is composed of an outer cylinder body air chamber and an inner bellows air chamber. The air inlet of the inner bellows air chamber of the pressure accumulator communica...

Embodiment 3

[0042] The difference between this embodiment and Embodiment 2 or Embodiment 3 is that the sealing setting and material selection are optimized to ensure the ultra-high sealing and safety of the entire pressurization and pressure regulation system. The specific setting method is as follows:

[0043] The pressure accumulator of the present invention uses a fully sealed metal bellows diaphragm to divide the inside of the pressure accumulator into inner and outer sides, and the volume change chamber of the pressure accumulator is completely contained by a sealed welded bellows to avoid the volume change process of the inner cavity Seal leaks in. At the same time, the pressure accumulator also has an outer cylinder block, which is connected with the surge tank to form a second containment boundary. The inside of the surge tank is fully welded and sealed. Even if the bellows breaks, radioactive or dangerous gases will only leak into the pressure accumulator. The space of the outer ...

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Abstract

The invention discloses a gas high-tightness rapid pressure regulation system and method. It is composed of gas circuit, pressure accumulator, surge tank, diaphragm compressor, gas filling tank, valves, pipes and instruments. First, the high-pressure process gas in the inflatable tank is directly inflated into the gas circuit to quickly increase the pressure of the reaction gas barrier in the gas circuit; then the medium-pressure process gas in the gas circuit is released to the pressure accumulator, and the pressure accumulator is expanded to a variable volume, quickly Reduce the reaction gas barrier pressure in the gas circuit; finally, the pressure accumulator is compressed under the driving gas pressure of the surge tank, and the low-pressure process gas is driven into the diaphragm compressor to be compressed and boosted to the inflatable tank. The pressure accumulator uses a metal bellows diaphragm to separate the process gas and the driving gas for high-tight volume compensation and pressure buffering. The entire pressure regulating system is sealed with all metal materials. The invention is used for gas fine chemical production, electronic gas process treatment, nuclear fuel power transient test and the like.

Description

technical field [0001] The present invention relates to the field of gas test and nuclear fuel transient test in chemical industry, in particular to a gas high-seal rapid pressure regulation system and method, which can be used for the production, treatment and experiment of high-purity gas, expensive gas, dangerous gas and radioactive gas, etc. It can be used for rapid pressure adjustment, and it can also quickly control the pressure of neutron-absorbing gas for power transient test of nuclear fuel. It can be used in various occasions such as oil and gas, gas fine chemical industry, electronic gas, nuclear chemical industry and nuclear fuel test. Background technique [0002] In the chemical industry, high-purity electronic gases such as sulfur hexafluoride have good insulating properties, and are widely used in arc extinguishing of high-voltage electrical equipment and etching and cleaning in microelectronics manufacturing, etc., but the price is relatively expensive. Duri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D1/02F17D3/01F17D5/00F17D5/02
CPCF17D1/02F17D3/01F17D5/00F17D5/02
Inventor 李炳林戴钰冰孙胜张帅刘晓松冯明全曹娜汪海张亮傅源杰
Owner NUCLEAR POWER INSTITUTE OF CHINA
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