Gas replacement method and device used for rigid container and based on quantitative gas extracting-inflating technology

A rigid container, gas replacement technology, applied in container filling method, container discharge method, fixed capacity gas storage tank, etc., can solve the problem of low pressure resistance

Inactive Publication Date: 2015-04-29
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the deficiencies of the existing rigid container gas replacement technology, especially in order to solve the technical problem of gas replacement in rigid containers with low pressure resistance, and provides a method with high reliability and strong practicability, and provides effective implementation of this method method device

Method used

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  • Gas replacement method and device used for rigid container and based on quantitative gas extracting-inflating technology
  • Gas replacement method and device used for rigid container and based on quantitative gas extracting-inflating technology
  • Gas replacement method and device used for rigid container and based on quantitative gas extracting-inflating technology

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Embodiment 1

[0134] figure 2 Shows the gas replacement device of Example 1 of the present invention, the gas replacement device includes a rigid container 1, air extraction and gas mixing assembly 2, raw material gas filling assembly 3, pressure sensing assembly 4, pressure balance assembly 5, gas Concentration sensing component 6 and programmable logic controller 7.

[0135] The rigid container 1 is made of hard materials such as metal, plastic or glass. The thickness of the container wall is generally 1mm-3mm, and the volume of the gas phase space in the container is generally 10-1000L.

[0136] The air extraction and gas mixing assembly 2 includes an air pump 21 , an air extraction pipe 22 , an air delivery pipe 23 , a three-way electromagnetic valve 24 , an exhaust pipe 25 and a gas return pipe 26 . One end of the suction pipe 22 communicates with the rigid container 1 , and the other end communicates with the input end of the air pump 21 . The output end of the air pump 21 is conne...

Embodiment 2

[0184] image 3 Shown is the gas replacement device of Example 2 of the present invention, which includes a rigid container 1 , an air extraction and gas mixing component 2 , a raw material gas filling component 3 , and a pressure detection component 4 .

[0185]The rigid container 1 is a glass bottle or a hard plastic bottle, the thickness of the container wall is generally 2-3mm, and the volume of the gas phase space in the container is generally 1mL-100mL. There is a circular opening on the rigid container 1, and the silicone sealing plug 12 is tightly plugged in the circular opening. The injection needle 13 penetrates the silicone sealing plug 12 and is inserted into the gas phase space of the container. The outer end of the injection needle 13 is connected to one of the four-way valves 14. port.

[0186] The gas extraction and gas mixing assembly 2 includes a gas injector 27 and a gas filter 28 . The gas injector 27 is connected to a gas filter 28 which is connected to ...

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Abstract

The invention discloses a gas replacement method and device used for a rigid container and based on a quantitative gas extracting-inflating technology. According to the gas replacement method, the pressure intensity is taken as a quantitative index, 1/2 of gas in the container is extracted from the rigid container once, and the container is filled with raw material gas with the same amount as the extracted gas, wherein components of the raw material gas are different from those of the extracted gas, or the component proportion of the raw material gas is different from that of the extracted gas; the gas is extracted and inflated for one or more rounds to enable the components of the gas in the rigid container to reach a quantitative value, and the components of the gas are slightly adjusted and replenished, so that a gas-phase space of the rigid container can be filled up with mixed gas or one high-purity gas with required component concentration. The gas replacement method is suitable for replacing gas in rigid containers with various characters and different sizes, particularly rigid containers with relatively low pressure resistance. The gas replacement device can be an automatic gas replacement device or a manual gas replacement device, and comprises basic assemblies such as the rigid container, a gas extracting and gas uniform-mixing assembly, a raw material gas inflating assembly and a pressure detection or sensing assembly.

Description

technical field [0001] The invention relates to a gas replacement method and device, in particular to a rigid container gas replacement method and device based on pumping-inflating technology. Background technique [0002] In many industries such as electronics, metallurgy, chemical industry, food, biology, medicine, etc., due to the technical requirements of the work, it is often necessary to fill the rigid container with a mixed gas of different component ratios or a certain high-purity gas. [0003] For example, operations such as lithium-ion batteries, semiconductors, supercapacitors, special lamps, cell culture, anaerobic culture, certain compound processing, and packaging of preserved foods are performed in a closed workbench (the operating compartment of which is a rigid container) , it is necessary to vacuumize the workbench operation cabin first, try to pump out the air in the cabin, and then fill it with a prepared mixed gas, or various component gases, or a certai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C5/06F17C7/00F17C13/02F17C13/04
Inventor 汪保和熊蕾李璟潘轩张君唐文岘
Owner HUNAN NORMAL UNIVERSITY
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