Dynamic gas-liquid mixing gas sample compounder

Abstract

The invention discloses a dynamic gas-liquid mixing gas sample compounder. The dynamic mix-liquid mixing gas sample compounder comprises a gas compounding part, a liquid gasification part, a gas sample compounder system main board and a Win ce industrial control screen, wherein the gas compounding part comprises multiple gas circuits, a T-joint electromagnetic valve is connected to the fourth gas circuit in series, two-port electromagnetic valves are connected to other gas circuits in series, a mass flow controller is connected behind the electromagnetic valve on each gas circuit in series, and the T-joint electromagnetic valve is connected with the two-port electromagnetic valves on other gas circuits through the two-port electromagnetic valves respectively; the liquid gasification part comprises a constant-temperature heating device and an injection pump, the mass flow controller not connected with a gas inlet of a gas mixing chamber is connected with a first inlet of the constant-temperature heating device, the injection pump is connected with a second inlet of the constant-temperature heating device, and an outlet of the constant-temperature heating device is connected with a gas inlet of the gas mixing chamber; the Win ce industrial control screen is connected with the gas sample compounder system main board, and the gas sample compounder system main board is connected with all the two-port electromagnetic valves, the T-joint electromagnetic valve, the mass flow controllers, the constant-temperature heating device and the injection pump.

Description

technical field [0001] The invention belongs to the technical field of gas analysis, and in particular relates to a dynamic gas-liquid mixing gas distribution instrument. Background technique [0002] In the field of gas analysis and detection, it is often necessary to use gas distribution instruments to generate standard gases for calibration and calibration of monitoring instruments. Similarly, in the fields of environment, scientific research, and biomedicine, it is also necessary to match a certain concentration of gas. [0003] At present, a variety of gas-liquid mixing ratio methods have appeared in the prior art. For example, the Chinese patent document with the publication number CN102580606A discloses a dynamic gas distribution instrument, which includes a dilution gas inlet copper pipe, a raw material gas inlet pipe, and a gas outlet pipe. Trachea, control system, constant temperature chamber, gas mixing chamber, at least one glass diffusion tube and diffusion tube...

AI Technical Summary

Problems solved by technology

[0004] Although the dynamic gas distribution instrument disclosed in the Chinese patent document with the publication number CN102580606A can configure the gas-liquid mixture by means of liquid volatilization, the volatilization of different liquids is different when the temperature is unstable, so it may not be able to achieve the experimental results. The required ratio concentration, this gas distribution method is relatively passive, and the accuracy is not high. At the same time, the dynamic gas distribution instrument can only mix one gas, one liquid or two gas mixtures, and cannot complete the mixing and preparation of multiple gases.

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