Anti-explosion multi-component dynamic air distribution device and method

Abstract

The invention discloses an anti-explosion multi-component dynamic air distribution device and method. The device comprises a low-pressure air distribution system 15, an air compression generation device 16, a pressurization system 17, a vacuumization system 18 and a filling system 19. Through the adoption of a back pressure valve, the pressure of gas at the gas outlet end of the back pressure valve is stable before the gas enters a gas mixer, so that an anti-explosion effect is achieved; due to the adoption of a variable frequency diaphragm compressor, product gas is high in purity and free of impurity gas pollution; moreover, the pressure in the low-pressure air distribution channel is stabilized in a safe pressure range by adjusting the working frequency of the variable frequency diaphragm compressor to achieve the anti-explosion effect; flow control ranges of n mass flow controllers are distributed in a trapezoidal shape for real-time control on gas flow, so that the air distribution precision is improved; air generated by the air compressor is utilized as a diluent gas channel, so that the cost is saved; an alarm function can be performed in an air distribution process.

Description

technical field [0001] The invention relates to a multi-component dynamic gas distribution technology, in particular to the preparation and filling of standard mixed gas, belonging to the field of gas distribution of mixed gas. Background technique [0002] The role of reference materials is to achieve accurate and consistent measurements and ensure traceability of values. Standard gas is one of the most widely used standard substances, and has been widely used in scientific research, industrial production, environmental protection, calibration of instruments and meters, inspection of chemical products and other fields. With the rapid development of the national economy, the consumption of standard gas is increasing, and the requirements for standard gas are also increasing. Therefore, practical and effective measures must be taken to formulate high-quality standard gas that meets user requirements while ensuring safety. [0003] The design of the present invention mainly ...

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Problems solved by technology

[0004] In the traditional gas distribution device, the instability of the pressure in the gas distribution channel can easily lead to an explosion during the gas distribution process. Ensuring the pressure stability of the gas distribution channel is the key to ensuring the safety of gas distribution

In addition, the airtightness of the gas compressors commonly used at present is not good, and the outside air is easy to infiltrate, resulting in a decrease in the purity of the mixed standard gas; and the power consumption is high; in the traditional gas distribution process, the gas flow rate of the gas distribution channel is not sufficient. Achieve multi-range control, resulting in inaccurate gas distribution

When the diluent gas is air, the synthesized air cannot be as real as the ratio of components in real air, which will greatly reduce the accuracy of gas distribution

During the gas distribution process, if the flow rate of the gas flowing out of the mass flow controller fluctuates greatly, the standard gas ratio will be inaccurate, or even explode.

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