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Gas high-sealing intermediate-speed pressure regulating system and method

A pressure regulating system and high-sealing technology, applied in the direction of reducing greenhouse gases, climate sustainability, liquid variable capacity machinery, etc., to improve the ability of rapid power transient testing, reduce irradiation power, and reduce neutron flux Effect

Active Publication Date: 2019-11-12
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, expensive neutron-absorbing gas itself or nuclear reaction products are very dangerous, and the system needs to be sealed with ultra-high performance to ensure personnel safety and improve test economy.

Method used

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  • Gas high-sealing intermediate-speed pressure regulating system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A process flow diagram of a medium-speed high-seal medium-speed pressure regulating system, such as figure 1 shown. The medium-speed pressure-regulating absorption of the present invention is mainly composed of a gas circuit, an inflatable tank, a deflation tank, a pneumatic compressor, a driving gas cylinder, a gas storage tank, a vacuum pump, valves, pipelines and instruments etc. The gas circuit is a high-seal forced circulation circuit formed by connecting the reaction gas shield inside the reactor with the suction bed outside the reactor, gas circulation pump and other equipment. And connect the reaction gas shield through the gas circuit. The inlet and outlet of the bellows air chamber in the inner cavity of the pneumatic compressor are connected with the inlet of the air charging tank and the outlet of the deflation tank, and the air chamber of the outer cavity cylinder is connected with the air intake and exhaust pipes driven by air pressure. The medium-speed...

Embodiment 2

[0036] The difference between this implementation example and Example 1 is that since the pneumatic compressor can only suck 1 / 3 of the process gas from the vent tank at a time into the inner cavity bellows air chamber to compress and pressurize it to the inflatable tank, in order to reduce the residual gas in the vent tank Consumption of expensive process gas in the gas tank, increasing the final pressure of the compressed gas in the gas tank. The present invention uses the air pressure-driven metal bellows diaphragm compressor's repeated rounds of filling and deflation methods to suck and compress the gas in the gas deflation tank, reduce the amount of gas in the deflation tank, and increase the pressure in the gas inflation tank. The specific method is as follows :

[0037]On the basis of Embodiment 1, the medium-speed pressure regulating system of the present invention subsequently closes the communication valve between the pneumatic compressor and the inflation tank, open...

Embodiment 3

[0039] The difference between this implementation example and Embodiments 1 and 2 is that when it is necessary to pump the expensive process gas lower than normal pressure in the deflation tank into the pneumatic compressor for compression, further reduce consumption and improve the process in the inflation tank When the final compression pressure of the gas is reached, the present invention uses a vacuum-driven and air-pressure-driven double-acting metal bellows diaphragm pneumatic compressor to suck the gas in the degassing tank (which may also include a gas circuit and a gas screen), and after compression and boosting Discharge into the inflatable tank, the specific setting method is as follows:

[0040] When the gas pressure in the vent tank is lower than normal pressure, it cannot flow naturally into the pneumatic compressor, and the suction process needs to be converted from air pressure drive to vacuum drive. In order to realize the vacuum drive and suck the expensive p...

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Abstract

The invention discloses a gas high-sealing intermediate-speed pressure regulating system and method. The gas high-sealing intermediate-speed pressure regulating system is composed of an inflation tank, a deflation tank, a pneumatic compressor, a drive gas cylinder, a vacuum pump, a gas storage tank, a valve, a pipeline, an instrument and the like. The whole system is in all metal material seal, and a multi-level anti-leakage measure is set. The pressure of a reaction gas screen is increased or reduced at an intermediate speed through a gas loop in the intermediate-speed inflation and deflationprocesses of the inflation tank and the deflation tank. A pneumatic compressor is a metal bellows diaphragm compressor under the dual effects of gas pressure drive and vacuum drive, the drive gas inflow and exhaust processes are achieved through an inflow pipeline connected with the drive gas bottle and an exhaust pipeline connected with a ventilator, process gas in the deflation tank is repeatedly sucked to be compressed into intermediate-pressure gas to be exhausted into the inflation tank, the pneumatic compressor can be driven under vacuum through the vacuum pump in turns so that the process gas with the pressure lower than normal pressure in the deflation tank can be sucked, the process gas is driven under gas pressure, compressed and pressurized into the inflation tank, and residuesare reduced. The gas high-sealing intermediate-speed pressure regulating system and method can be used for gas drive liquid lifting, a nuclear fuel power transient-state test and the like.

Description

technical field [0001] The present invention relates to the field of gas test in petrochemical industry and nuclear fuel power transient test, in particular to a gas high-seal medium-speed pressure regulating system and method, which can carry out research on the production, treatment and experiment of high-purity, expensive and dangerous gases It can also adjust the pressure of neutron absorbing gas at a medium speed to perform power transient test on nuclear fuel elements. Background technique [0002] In oil and gas extraction, the air lifter introduces air into a pipe immersed in the lifted liquid to lift the liquid, and it can be used to pump oil from oil and gas wells or pump water from mines. In radiochemical and nuclear chemical industries, gas liquid lifters are widely used in circulating sampling, pumping of solvent extraction liquid, circulating and stirring of radioactive waste liquid, etc. After pressure, it is discharged at a medium speed to reduce the pressur...

Claims

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Application Information

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IPC IPC(8): F04B45/053F04B41/02F04B49/08
CPCF04B41/02F04B45/053F04B49/08Y02E70/30
Inventor 李炳林王洪胡腾郭骏宇郑华林丁亮亮甯尤军
Owner NUCLEAR POWER INSTITUTE OF CHINA
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