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A method and device for creating a low dew point and low carbon dioxide environment

A low carbon dioxide and carbon dioxide technology, applied in the direction of simultaneous control of multiple variables, instruments, control/regulation systems, etc., can solve the problems of large nitrogen consumption, long processing time, and high energy consumption, achieve convenient operation, reduce construction costs and energy. The effect of low power consumption and simple device structure

Active Publication Date: 2021-12-21
ARMY ENG UNIV OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of high energy consumption, long processing time, and high nitrogen consumption of traditional dehumidification and carbon dioxide removal devices, the present invention provides a method and device for creating a low dew point and low carbon dioxide environment. The device is easy to operate and has a wide controllable range , realize the creation of a special experimental environment with a dew point from -80°C to 20°C, and a carbon dioxide concentration from 1ppm to 100ppm. The concentration of water vapor and carbon dioxide can reach <1ppm, especially in the field of artificial environment creation, which can create the required dry air and Low-carbon experimental environment, suitable for various experiments with different dryness requirements

Method used

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  • A method and device for creating a low dew point and low carbon dioxide environment

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Embodiment 1

[0028] refer to figure 1As shown, a device for creating a low dew point and low carbon dioxide environment, including an experimental cabin 1, a dew point meter 2, a PLC pressure control system 3, a vacuum gauge 4, a transition cabin 5, sealing gloves 6, a vacuum pump 7, a circulating fan 8, Purification column 9, vaporization module 10, carbon dioxide analyzer 11, pressure reducing valve 12, solenoid valve 13, gas filter 14, one-way stop valve 15, mass flow meter 16, precision syringe pump 17.

[0029] Among them, the vaporization module 10 is connected to the inlet of the left part of the experimental cabin, and the left end of the vaporization module is connected to two channels of gas to enter the mixture. The carbon dioxide gas source, one path of gas is directly connected to the precision syringe pump 17 which can be quantitatively adjusted.

[0030] The lower left part of the material of the experimental cabin is connected to a high-purity nitrogen gas source, which is...

Embodiment 2

[0039] Utilize the device of above-mentioned embodiment 1, create the method for a kind of low dew point and low carbon dioxide environment, comprise the following steps:

[0040] Step 1. Inert gas replaces the original water vapor and carbon dioxide in the experimental cabin: the high-purity nitrogen source is continuously introduced into the experimental cabin 1 in advance, and the high-purity nitrogen passes through the pressure reducing valve 12-1 and the gas filter 14-3 in sequence. , electromagnetic valve 13-6, mass flow meter 16-1, and one-way stop valve 15-1 are input into the experimental cabin 1, and the working pressure range (-10mbar—10mbar) in the experimental cabin is set through the PLC control system, and the electromagnetic valve is turned on at the same time. Exhaust valve 13-1 exhausts outwards, using inert gas to replace the original water vapor and carbon dioxide in the experimental chamber 1, the replacement efficiency can reach 90%, and the replacement ra...

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Abstract

The invention relates to a method and device for creating a low dew point and low carbon dioxide environment. The device includes an experimental cabin, adopts the principle of "replacement + purification gas distribution method", firstly uses high-purity nitrogen to replace the original air in the cabin, and then opens it. The internal purification circulation system removes water vapor and carbon dioxide to form an inert atmosphere in the cabin, and then turns on the bypass fan circulation system, and at the same time inputs a certain amount of water vapor and carbon dioxide into the experimental cabin to complete the mixing conditions of different water vapor and carbon dioxide concentrations. Create a special experimental environment with a dew point from -80°C to 20°C and a carbon dioxide concentration from 1ppm to 100ppm.

Description

technical field [0001] This patent relates to the fields of experimental environment creation, dehumidification and carbon dioxide removal, specifically, a method and device for creating a low dew point and low carbon dioxide environment. Background technique [0002] For some experimental environments that require dry air and low carbon dioxide, it is generally necessary to remove the original water vapor and carbon dioxide in the environment to meet the parameter requirements. This kind of environment can only be achieved by using deep dehumidification technology. The low dew point air environment refers to the environment with a dew point temperature of -80°C to 20°C, and the low carbon dioxide content refers to the carbon dioxide content range of 1ppm to 100ppm. In terms of deep dehumidification, molecular material membrane dehumidification, freeze drying, and solid adsorption dehumidification are currently the three most important methods. By comparing the three method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 彭福胜王杰王元靖洪兴福屠志远李增军郭佳全韩旭许继恒刘立瑶黄春杰
Owner ARMY ENG UNIV OF PLA