Standard gas multi-element mixing system

Abstract

The invention discloses a standard gas multi-element mixing system which comprises a first mixed gas circuit, a steel cylinder busbar, a second mixed gas circuit and an exhaust circuit, the first mixed gas circuit is communicated with the steel cylinder busbar, and a second manual stop valve, a third pneumatic stop valve, and a second exhaust port are arranged on the exhaust circuit. The arrangement mode that the second manual stop valve and the third pneumatic stop valve are matched is utilized, mixed gas is introduced into a first mixed gas path, then the mixed gas enters the first mixed gas path through a mixed gas inlet, a pipeline of the first mixed gas path is blocked through a first pneumatic stop valve, and then the third pneumatic stop valve is opened, so that mixed gas and corrosive gas are discharged together, the corrosive gas is prevented from continuously remaining in the pipeline to corrode the pipeline, and the service life of the pipeline and various components in the first mixed gas path is prolonged.

Description

technical field [0001] The invention relates to the field of gas distribution equipment, in particular to a multiple standard gas mixing system. Background technique [0002] Gas corrosion refers to the corrosion that occurs when the metal only reacts with a gas corrosive agent without any liquid phase on the metal surface, that is, the corrosion process that occurs when the metal material is completely free of moisture condensation on the surface. Gas corrosion generally refers to corrosion at high temperatures. Gas corrosion is one of the most common and important forms of corrosion in chemical corrosion. [0003] The main factors affecting the gas corrosion rate are the chemical composition of the metal material, the composition of the medium, the movement speed of the medium, the pre-deformation, the surface state and the temperature. The main methods to prevent gas corrosion are: using thermally stable alloys, controlling the composition of the gas medium, and coating...

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Problems solved by technology

[0004] Generally refers to acidic gas, acidic or alkaline gas, which can be dissolved in water to form acidic or alkaline liquid. The common ones are carbon dioxide, sulfur dioxide, sulfur trioxide, and nitrogen dioxide, which can corrode the equipment and affect the equipment. or pipe life

[0005] When it is necessary to pressurize and package the corrosive gas, the gas is usually pressurized and packaged by a rotary vane vacuum pump, but after the corrosive gas is packaged, there will be a large amount of corrosive gas remaining in the pipeline, which remains in the pipeline. The corrosive gas inside will corrode the pipeline, affecting the normal use of the pipeline and reducing the service life of the pipeline

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