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Preparation device and preparation method of standard mixed gas

A mixed gas and preparation device technology, applied in the direction of mixing methods, mixers, chemical instruments and methods, etc., can solve problems affecting the filling accuracy of standard mixed gases

Active Publication Date: 2020-10-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation device and preparation method of standard mixed gas
  • Preparation device and preparation method of standard mixed gas
  • Preparation device and preparation method of standard mixed gas

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] figure 1 It is a structural schematic diagram of a standard mixed gas preparation device provided by the embodiment of the present invention. like figure 1 As shown, the preparation device includes: an airtight body 1, a gas distribution bottle 2, a pressure gauge 3, and an inflatable bottle 5. The airtight body 1 has a control chamber, and the airtight body 1 is provided with a plurality of communication ports 10 communicating with the control chamber. The airtight body A plurality of communication ports 10 of 1 are connected with valve 4.

[0027] Wherein, there may be multiple inflatable bottles, which are the same as the number of component gases of the standard mixed gas, and one component gas is stored in each inflatable...

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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 comprises: an airtightbody, a gas distribution bottle, a pressure gauge and an inflation bottle, wherein the airtight body is provided with a control cavity and a plurality of communication ports communicated with the control cavity; a plurality of communication ports of the airtight body are connected with valves; the plurality of communication ports comprise a gas inlet, a gas distribution port and a pressure sensingport; the gas distribution bottle is communicated with the gas distribution port through the valve connected with the gas distribution port; the inflation bottle is communicated with the gas inlet through the valve connected with the gas inlet; the pressure gauge is communicated with the valve on the pressure sensing port; and when the airtight body is configured to be provided with a plurality of communication ports which are communicated at the same time, the pressure values of the communication ports are the same. According to the invention, the response speed of the pressure gauge to thepressure change can be accelerated, and the gas pressure during preparation of the standard mixed gas is detected in time, so that the high-precision standard mixed gas is prepared.

Description

technical field [0001] The invention relates to the technical field of mixed gas preparation, in particular to a preparation device and method for standard mixed gas. Background technique [0002] The standard mixed gas has the characteristics of high uniformity, stability, and quantitative accuracy, which makes the standard mixed gas play an important role in the calibration of instruments and meters and the quality control of gas products. [0003] At present, the pressure method is usually used to prepare the standard mixed gas. The preparation device for preparing standard mixed gas by pressure method includes a confluence pipe, a gas distribution bottle, an inflatable bottle, various valves, and a pressure gauge. The bottle is located at one end of the confluence pipe, and the gas cylinder is located at the other end of the confluence pipe. Each inflatable bottle is filled with different component gases. The area of ​​the gas cylinder is equipped with a pressure gauge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F15/00B01F3/02B01F15/04B01F23/10
CPCB01F23/10B01F35/2113B01F35/83
Inventor 蔡黎向前周理常宏岗
Owner PETROCHINA CO LTD
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