High-sealing-performance rapid pressure adjustment system and method for gas

A pressure regulating system and high sealing technology, applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of toxicity and radioactive hazards, high price, etc., to reduce neutron flux and improve technical capabilities , the effect of saving test costs

Active Publication Date: 2019-11-26
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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  • High-sealing-performance rapid pressure adjustment system and method for gas

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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 outer chamber cylin...

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Abstract

The invention discloses a high-sealing-performance rapid pressure adjustment system and method for gas. The high-sealing-performance rapid pressure adjustment system for the gas is composed of a gas loop, a pressure accumulator, a pressure-stabilizing tank, a diaphragm compressor, an inflation tank, a valve, a pipeline, an instrument and the like. High-pressure process gas in the inflation tank isused for directly filling the gas loop, and a reaction gas cylinder pressure in the gas loop is rapidly increased at first; then medium-pressure process gas in the gas loop is discharged into the pressure accumulator, the pressure accumulator carries out variable-volume expansion, and the reaction gas cylinder pressure in the gas loop is rapidly reduced; and finally the pressure accumulator compresses under the pressure action of drive gas of the pressure-stabilizing tank, and low-pressure process gas is driven to enter the diaphragm compressor to be compressed and pressurized into the inflation tank. The pressure accumulator separates the process gas from the drive gas by a metal bellows diaphragm, and carries out high-sealing-performance volume compensation and pressure buffer, and thewhole pressure adjustment system is sealed by an all-metal material. The high-sealing-performance rapid pressure adjustment system and method for the gas are used for fine chemical production for gas,process treatment for electronic gas, transient test for nuclear fuel power, 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 Applications(China)
IPC IPC(8): F17D1/02F17D3/01F17D5/00F17D5/02
CPCF17D1/02F17D3/01F17D5/00F17D5/02
Inventor 李炳林甯尤军王洪郑华林丁亮亮胡腾郭骏宇
Owner NUCLEAR POWER INSTITUTE OF CHINA
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