Preparation device and preparation method of standard mixed gas
A technology for mixing gas and preparing devices, which is applied in mixers, chemical instruments and methods, gas and gas/vapor mixing, etc., and can solve problems such as affecting the filling accuracy of standard mixed gases
Active Publication Date: 2022-08-02
PETROCHINA CO LTD
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- Claims
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Problems solved by technology
As a result, when the component gas output from the gas cylinder reaches the filling pressure, the pressure gauge on the manifold fails to detect it in time, so the gas cylinder will continue to fill the gas distribution cylinder with component gas, and eventually the gas distribution cylinder will Each component gas in the gas is more than the required gas distribution volume, which affects the filling accuracy of the standard mixed gas
Method used
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Embodiment Construction
[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0026] figure 1 It is a schematic structural diagram of a preparation device for standard mixed gas provided by the embodiment of the present invention. like figure 1 As shown, the preparation device includes: a closed body 1, a gas distribution cylinder 2, a pressure gauge 3, and a gas cylinder 5. The closed body 1 has a control cavity, and the closed body 1 is provided with a plurality of communication ports 10 communicating with the control cavity. The valve 4 is connected to each of the plurality of communication ports 10 of 1 .
[0027] Wherein, there can be multiple inflatable bottles, which are the same as the number of component gases of the standard mixed gas, and each inflatable bottle stores one component gas. The quantity of th...
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Abstract
The invention discloses a preparation device and a preparation method of standard mixed gas, and belongs to the technical field of mixed gas preparation. The preparation device includes: an airtight body, a gas distribution bottle, a pressure gauge, and an air bottle, the airtight body has a control cavity and a plurality of communication ports communicating with the control cavity, and the plurality of communication ports of the airtight body are connected with a valve, the plurality of communication ports include an air inlet, a gas distribution port and a pressure sensing port, the gas distribution bottle is communicated with the valve connected to the air distribution port through the air distribution port, and the inflatable bottle is connected to the valve. The air inlet is communicated with the valve connected to the air inlet, the pressure gauge is communicated with the valve on the pressure sensing port, and the airtight body is configured such that when a plurality of communication ports are connected at the same time, The pressure values at the multiple communication ports are all the same. The invention can speed up the response speed of the pressure gauge to the pressure change, detect the gas pressure in time when the standard mixed gas is prepared, so as to prepare the high-precision standard mixed gas.
Description
technical field [0001] The invention relates to the technical field of mixed gas preparation, in particular to a preparation device and a preparation method of standard mixed gas. Background technique [0002] The standard mixed gas has the characteristics of high uniformity, stability and accuracy of the value, which makes the standard mixed gas play an important role in the calibration of instruments and the quality control of gas products. [0003] At present, standard gas mixtures are usually prepared using pressure methods. The preparation device for preparing standard mixed gas by pressure method includes a manifold, a gas distribution cylinder, a gas cylinder, various valves and pressure gauges, wherein a plurality of gas distribution cylinders to be distributed and a plurality of inflatable cylinders are arranged on the manifold. The bottle is located at one end of the confluence pipe, and the inflatable bottle is located at the other end of the confluence pipe. Eac...
Claims
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IPC IPC(8): B01F35/83B01F35/21B01F23/10
CPCB01F23/10B01F35/2113B01F35/83
Inventor 蔡黎向前周理常宏岗
Owner PETROCHINA CO LTD