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A low-pressure gas atmosphere simulator

A simulation device and low-pressure gas technology, applied in the field of environmental simulation experiments, can solve the problems of difficult procurement of standard gas and high cost, and achieve the effects of improving temperature control efficiency and accuracy, improving efficiency and increasing contact area.

Active Publication Date: 2021-08-06
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some special gases, such as some organic gases: alcohols, hydrocarbons or benzene gases, standard gases are not easy to purchase, and the cost is relatively high

Method used

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  • A low-pressure gas atmosphere simulator
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  • A low-pressure gas atmosphere simulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: The low pressure gas atmosphere simulation device of the present embodiment includes a vacuum chamber, a molecular sieve suction agent 1, a gas source compartment 2, a gas source compartment cover 3, and a temperature control element 4;

[0028] Among them, the gas source compartment 2 is located in the vacuum chamber, and there is a groove inside the gas source compartment 2 for placing a molecular sieve suction agent 1, and the molecular sieve adsorbent 1 is adsorbent to adsorbent the liquid agent to be simulated. The air source compartment 2 is placed at the top of the air supply compartment 2; the bottom portion of the gas source cabin 3 is gap with the top of the recess; the gas source cabin 3 is opened in the center of the air supply for ventilation The temperature control element 4 is used to control the temperature of the heated gas supply tank 2 in the set range. The overall profile structure of the air source bodies such as figure 1 Down, stereo figure ...

Embodiment 2

[0030] Example 2: A methanol gas environment simulation device, such as Figure 4 Indicated. Includes main vacuum chamber 7, air supply compartment 8, pumping system 9, mass spectrometer 10, tablet valve 11, and sub vacuum chamber 12.

[0031] Using the main and sub-vacuum chamber structure to avoid the main vacuum chamber to expose the atmosphere and keep cleanliness. Wherein, the pumping system 9 is used to vacuum the main vacuum chamber 7 and the sub vacuum chamber 12, the mass spectrometer 10 is used to measure the methanol gas partial pressure; the sheet valve 11 is connected to the main vacuum chamber 7 and the sub vacuum chamber 12, Used to deliver the air supply compartment 8 into the main vacuum chamber 7, the gas source compartment 8 is initially placed in the sub vacuum chamber 12.

[0032] Molecular sieving adhesive 1 uses specifications: 5A. The obtained mode is: the molecular sieve is suggested in the methanol liquid, stirred, and after about 5 min, then the molecular...

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Abstract

The invention provides a low-pressure gas atmosphere simulation device, which can simply and flexibly simulate complex low-pressure gas atmospheres. The present invention uses the molecular sieve adsorbent that has adsorbed the liquid reagent of the gas to be simulated as the gas source, and volatilizes it in a vacuum chamber by heating, thereby obtaining a simulated low-pressure gas environment (less than about 10 2 Pa), the standard gas of some special gases is not easy to purchase, but its liquid reagents (analytical pure or above) are easier to obtain, which overcomes the shortcomings of the traditional method of simulating gas types, complex systems, and high costs.

Description

Technical field [0001] The present invention belongs to the field of environmental simulation test, and it is related to a low pressure gas atmosphere simulation device. Background technique [0002] Special low gas pressure gas atmhesion in certain experiments or experimental research and industrial production, such as the response test of gas sensors, orbital space gas environment simulation. The conventional simulation device needs to provide a standard gas for the desired gas, and passes through the micro-flow valve into the vacuum chamber after mixing in a vacuum outdoor. However, for some special gases, such as some organic gases: alcohol, hydrocarbons or benzene gases, standard gases are not easily purchased, and the cost is higher. Therefore, it is urgent to achieve a simple and flexible simulation device to achieve a low pressure gas atmosphere simulation. Inventive content [0003] In view of this, the present invention provides a low pressure gas atmosphere simulation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J7/00
Inventor 杨生胜庄建宏王俊苗育君郭兴薛玉雄张剑锋黄一凡把得东王光毅乔佳张晨光
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH