CN210964677U - Gas analyzer calibration gas distribution device - Google Patents
Gas analyzer calibration gas distribution device Download PDFInfo
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- CN210964677U CN210964677U CN201921886703.3U CN201921886703U CN210964677U CN 210964677 U CN210964677 U CN 210964677U CN 201921886703 U CN201921886703 U CN 201921886703U CN 210964677 U CN210964677 U CN 210964677U
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Abstract
The utility model relates to the technical field of chemical industry, a gas analyzer calibration gas distribution device for coal chemical industry and petrochemical industry is provided. The gas analyzer calibration gas distribution device disclosed by the invention maintains the air pressure ratio at two ends of a sonic orifice pipeline at about 0.5 by adjusting the jet pump, when the dilution ratio is constant, the gas storage tank is used for introducing nitrogen into a jet inlet of the jet pump, and the air conveyed by the sonic orifice pipeline is extracted by utilizing the local vacuum principle of the jet pump and is mixed with high-purity nitrogen to form the required concentration content calibration gas.
Description
Technical Field
The disclosure relates to the technical field of chemical industry, in particular to a gas analyzer calibration and distribution device for coal chemical industry and petrochemical industry.
Background
The gas distributing device is mainly a device for automatically setting mixed output according to proportion aiming at simulated gas components required in laboratories and various environments, and the main core of the gas distributing device is the constant dilution ratio. By utilizing the characteristics of high precision and high accuracy, the diluent gas with preset flow rate flows into the mixing chamber and is mixed with the carrier gas flow flowing into the mixing chamber in the mixing chamber, so that the standard gas mixture with the required concentration of the target substance is obtained.
The traditional gas distribution device is characterized in that two or more gases are proportioned and mixed according to a certain proportion and then output to set concentration, the gas distribution precision is low (more than 1 percent), and the environmental influence factor is large; and the traditional gas distribution device has the problems of long debugging time, large gas distribution device, large occupied area, high failure rate, low accuracy and the like.
Disclosure of Invention
The utility model provides a gas analyzer calibration gas distribution device can dynamic distribution be joined in marriage promptly and use, realizes the definite value degree of accuracy. The specific technical scheme is as follows:
the calibration and gas distribution device of the gas analyzer comprises a jet pump, a sound velocity small hole pipeline and a gas storage tank, wherein one end of the sound velocity small hole pipeline is communicated with a suction inlet of the jet pump, and the other end of the sound velocity small hole pipeline is communicated with air; a pressure gauge is arranged on the sound velocity small hole pipeline; and a jet inlet of the jet pump enters gas to be diluted, and a jet outlet discharges calibration gas.
Further, a jet inlet of the jet pump is communicated with a gas storage tank for storing gas to be diluted through a pipeline.
Further, a pressure regulating valve is arranged on a pipeline between a jet inlet of the jet pump and the air storage tank.
Further, the gas to be diluted is nitrogen.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a calibration and gas distribution device of a gas analyzer according to an embodiment of the disclosure.
Wherein, 1-a jet pump; 2-sonic orifice pipe; 3-pressure gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
All the electrical components in the present application are connected with the power supply adapted to the electrical components through a wire, and an appropriate controller and an appropriate encoder should be selected according to actual conditions to meet control requirements, and specific connection and control sequences should be obtained.
As shown in fig. 1, the calibration and gas distribution device of the gas analyzer in the embodiment of the present disclosure includes a jet pump 1, a sound velocity small hole pipeline 2 and a gas storage tank, wherein one end of the sound velocity small hole pipeline 2 is communicated with a suction inlet of the jet pump 1, and the other end is communicated with air; a pressure gauge 3 is arranged on the sound velocity small hole pipeline 2; the jet inlet of the jet pump 1 enters gas to be diluted, and the jet outlet discharges calibration gas; the jet inlet of the jet pump 1 is communicated with a gas storage tank for storing gas to be diluted through a pipeline. A pressure regulating valve is arranged on a pipeline between a jet inlet of the jet pump 1 and the gas storage tank; the gas to be diluted is nitrogen, and the purity can be 99.999%.
The principle of the gas analyzer calibration and distribution device of the embodiment of the disclosure is as follows:
the air pressure ratio of two ends of the sound velocity small hole pipeline is maintained to be about 0.5 by adjusting the jet pump, the volume flow passing through the small holes is irrelevant to the upstream and downstream pressure, the gas flow passing through the sound velocity small holes is constant and close to the sound velocity, and the dilution ratio cannot be influenced by the change of temperature and pressure. When the dilution ratio is constant, the air storage tank is used for introducing nitrogen into the jet inlet of the jet pump, and the air conveyed by the sonic orifice pipeline is extracted by utilizing the local vacuum principle of the jet pump and is mixed with high-purity nitrogen to form the required concentration content calibration gas. According to the difference of concentration content, the re-proportioning of the calibration gas concentration can be carried out by adjusting a pressure adjusting valve on a pipeline.
The gas analyzer calibration and distribution device has the advantages of wide gas concentration ratio range, high ratio precision, excellent stability, repeatability and linearity, accurate and reliable prepared standard gas, easy quantity value transmission and traceability, quick operation and convenient use. The price is relatively low, the service life is long, the conventional gas types and the prepared concentration can be prepared through accurate setting, and the gas can be directly used without special setting or conversion.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The calibration gas distribution device of the gas analyzer is characterized by comprising a jet pump, a sound velocity small hole pipeline and a gas storage tank, wherein one end of the sound velocity small hole pipeline is communicated with a suction inlet of the jet pump, and the other end of the sound velocity small hole pipeline is communicated with air; a pressure gauge is arranged on the sound velocity small hole pipeline; and a jet inlet of the jet pump enters gas to be diluted, and a jet outlet discharges calibration gas.
2. The calibration gas distribution device of the gas analyzer according to claim 1, wherein the jet inlet of the jet pump is communicated with a gas storage tank for storing gas to be diluted through a pipeline.
3. The calibration and gas distribution device of a gas analyzer according to claim 2, wherein a pressure regulating valve is arranged on a pipeline between the jet inlet of the jet pump and the gas storage tank.
4. A gas analyser calibration gas distribution device according to any one of claims 2-3 wherein the gas to be diluted is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921886703.3U CN210964677U (en) | 2019-11-05 | 2019-11-05 | Gas analyzer calibration gas distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921886703.3U CN210964677U (en) | 2019-11-05 | 2019-11-05 | Gas analyzer calibration gas distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210964677U true CN210964677U (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921886703.3U Active CN210964677U (en) | 2019-11-05 | 2019-11-05 | Gas analyzer calibration gas distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210964677U (en) |
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2019
- 2019-11-05 CN CN201921886703.3U patent/CN210964677U/en active Active
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