A dynamic gas-liquid mixing gas distribution instrument
A gas-liquid mixing and gas distribution instrument technology, which is used in gas/vapor and liquid mixing, analyzing gas mixture, gas and gas/vapor mixing, etc. , passive problems, etc.
Active Publication Date: 2019-05-17
北京明尼特环保设备有限公司
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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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[0021] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0022] Such as figure 1 In a preferred embodiment shown, the gas distribution part includes four gas circuits, wherein the first two-way solenoid valve 21 and the first mass flow controller 31 are connected in series on the first gas circuit 1, and the first two-way solenoid valve The first inlet of 21 is connected to the air inlet of the first gas path 1, the outlet of the first mass flow controller 31 is connected to the first air inlet of the mixing chamber 5; the second two-way is connected in series on the second air path 2 The solenoid valve 22 and the second mass flow controller 32, the first inlet of the second two-way solenoid valve 22 is connected to the inlet port of the second air circuit 2, the outlet of the second mass flow controller 32 is connected to the gas mixing chamber 5 The second air inlet is connected; the thir...
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The invention discloses a dynamic gas-liquid mixing gas distribution instrument. The gas distribution device includes a gas gas distribution part, a liquid gasification part, a gas distribution instrument system main board and a Win ce industrial control panel. The gas gas distribution part includes a plurality of gas paths, Three-way solenoid valves are connected in series on the fourth air circuit, and two-way solenoid valves are connected in series on the other air circuits. Mass flow controllers are connected in series after the solenoid valves on each air circuit. The liquid vaporization part includes a constant temperature heating device and a syringe pump. The mass flow controller not connected to the air inlet of the mixing chamber is connected to the first inlet of the constant temperature heating device. The syringe pump is connected to the first inlet of the constant temperature heating device. The two inlets are connected, the outlet of the constant temperature heating device is connected to the air inlet of the gas mixing chamber; the Win ce industrial control panel is connected to the main board of the gas distribution instrument system, and the main board of the gas distribution instrument system is connected to all the two-way solenoid valves, three-way solenoid valves, Mass flow controller, thermostatic heating device and syringe pump connection.
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...
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IPC IPC(8): B01F3/04B01F3/02B01F15/04B01F15/02B01F15/06B01F15/00G01N33/00B01F23/10
CPCG01N33/0006B01F23/12B01F23/20B01F35/2115B01F35/2132B01F35/2202B01F35/7176B01F35/80B01F35/91B01F2035/99
Inventor 王国振
Owner 北京明尼特环保设备有限公司