CN204159307U - A kind of mixed gas preparation device - Google Patents
A kind of mixed gas preparation device Download PDFInfo
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- CN204159307U CN204159307U CN201420573573.9U CN201420573573U CN204159307U CN 204159307 U CN204159307 U CN 204159307U CN 201420573573 U CN201420573573 U CN 201420573573U CN 204159307 U CN204159307 U CN 204159307U
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Abstract
A kind of mixed gas preparation device, comprise some Standard Gases gas cylinders, suspended body flowmeter, three-way air valve, exhaust gas processing device, mixing chamber, air bleeding valve, vacuum valve, vavuum pump, each Standard Gases gas cylinder connects an air inlet branch road, every bar air inlet branch road is arranged a suspended body flowmeter corresponding with Standard Gases gas cylinder; Described three-way air valve arranges an air inlet port and two air outlet, the air inlet port of three-way air valve is connected to after the air inlet branch circuit parallel connection of each Standard Gases gas cylinder, an air outlet of three-way air valve connects exhaust gas processing device, and another air outlet connects the air inlet of mixing chamber; Mixing chamber arranges two gas outlets, and the gas outlet on mixing chamber top connects gas exhaust piping, and air bleeding valve is arranged on gas exhaust piping, and the gas outlet of mixing chamber bottom connects vavuum pump by vacuum-pumping pipeline, and vacuum valve is arranged in vacuum-pumping pipeline.The utility model simplifies system architecture, reduces operation easier and cost input, improves versatility, feasibility.
Description
Technical field
The utility model relates to mist preparation technique field, specifically a kind of easy mixed gas preparation device.
Background technology
In flue gas on-line monitoring, instrument calibration test, welding and medicine and other fields, often need several gas with various to mix according to a certain percentage.The gas buied from gas suppliers is the calibrating gas with finite concentration and purity, calibrating gas is sealed in pressure steel cylinder (also claiming Standard Gases gas cylinder), during practical application, usually need to dilute in proportion the gas of these normal concentrations, mix, obtain and can meet the certain concentration of practical application needs, the gas of proportioning.Existing air distributing device structure is too complicated, need electrical control even microcomputer control, operation sequence is loaded down with trivial details, and cost is high, and inapplicable in a lot of occasion not high to distribution required precision, versatility is poor.
Utility model content
The utility model technical issues that need to address are to provide a kind of simple to operate, versatility good, cost the is low mixed gas preparation device that meet general application scenario.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of mixed gas preparation device, comprises some Standard Gases gas cylinders, after improvement, also comprises suspended body flowmeter, three-way air valve, exhaust gas processing device, mixing chamber, air bleeding valve, vacuum valve, vavuum pump,
Described each Standard Gases gas cylinder connects an air inlet branch road, every bar air inlet branch road is arranged a suspended body flowmeter corresponding with Standard Gases gas cylinder, is connected to three-way air valve after each air inlet branch circuit parallel connection; Described three-way air valve arranges an air inlet port and two air outlet, the air inlet port of connecting tee air valve after each air inlet branch circuit parallel connection, and an air outlet of three-way air valve connects exhaust gas processing device, and another air outlet connects mixing chamber; Described mixing chamber arranges an air inlet and two gas outlets, the air outlet that the air inlet of mixing chamber is corresponding with three-way air valve is communicated with, the gas outlet on mixing chamber top connects gas exhaust piping, air bleeding valve is arranged on gas exhaust piping, the gas outlet of mixing chamber bottom connects vavuum pump by vacuum-pumping pipeline, and vacuum valve is arranged in vacuum-pumping pipeline.
Above-mentioned mixed gas preparation device, described every bar air inlet branch road is all provided with pressure-reducing valve between standard gas bottle and suspended body flowmeter.
The utility model, after employing technique scheme, has the effect of following technological progress:
The utility model selectes the suspended body flowmeter of one group of specific range according to actual needs, the pressure-reducing valve of its air inlet with each high voltage standard gas bottle is connected, using its gas outlet as calibrating gas extraction slit, and be communicated with mixing chamber, the each component gas be filled with in proportion exports from mixing chamber gas outlet after fully mixing in mixing chamber, flow velocity and the flow of air bleeding valve regulation output air-flow are passed through in mixing chamber gas outlet, the utility model is not affecting general application scenario under the prerequisite of required precision, achieve mist and prepare application in proportion, simplify system architecture, reduce operation easier and cost input, improve versatility, feasibility.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, each label is expressed as: 1, vavuum pump; 2, vacuum valve; 3, gas exhaust piping; 4, air bleeding valve; 5, mixing chamber; 6, three-way air valve; 7, suspended body flowmeter; 8, exhaust gas processing device; 9, Standard Gases gas cylinder.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further details:
Referring to a kind of mixed gas preparation device of Fig. 1, comprise vavuum pump 1, vacuum valve 2, gas exhaust piping 3, air bleeding valve 4, mixing chamber 5, three-way air valve 6, suspended body flowmeter 7, exhaust gas processing device 8, Standard Gases gas cylinder 9.
According to the Standard Gases gas cylinder 9 of selected one group of certain concentration that practical application needs, the suspended body flowmeter 7 that selected one group of range, precision are corresponding with it, be communicated with by air inlet branch road between Standard Gases gas cylinder 9 and corresponding suspended body flowmeter 7 air inlet, every bar air inlet branch road all connects pressure-reducing valve.The gas piping that suspended body flowmeter 7 gas outlet connects is also as a part for air inlet branch road, and the end of the air inlet branch road that all suspended body flowmeter 7 gas outlets connect also is unified into an air inlet pipeline.
Three-way air valve 6 arranges an air inlet port and two air outlet, and air inlet port is communicated with the air inlet pipeline after air inlet branch circuit parallel connection.One of them of two air outlet is connected with exhaust gas processing device 8.Another is connected with mixing chamber 5.
Mixing chamber 5 arranges an air inlet and two gas outlets, and air inlet is not connected exhaust gas processing device 8 air outlet with three-way air valve 6 connects.Two gas outlets, one of them is positioned at mixing chamber 5 top, connects gas exhaust piping 3, gas exhaust piping 3 is arranged and controls the flow of mist discharge and the air bleeding valve 4 of flow velocity.Another gas outlet is positioned at the bottom of mixing chamber 5, connects vavuum pump 1 by vacuum-pumping pipeline, vacuum-pumping pipeline is arranged the vacuum valve 2 for controlling to open or close gas circuit.Each air-path interface all should ensure air-tightness.
During practical application, first calculate each component gas flow according to the composition of required configuration gas, concentration, be exemplified below:
Example 1: need by the sulfur dioxide of existing 200ppm (containing nitrogen) gas nitrogen dilution, to be configured to 40ppm, 80ppm, 160ppm tri-kinds of concentration, gas feed flow rate 1L/min, from 40=200 × 1/5, the flow velocity v of sulfur dioxide and nitrogen
1, v
2v should be met
1=1 × 1/5 L/min, v
2=1L/min-v
1, can v be obtained
1=200ml/min, v
2=800ml/min.In like manner can configure three kinds of concentration gases flow velocitys as shown in the table.
Example 2: need by nitrogen dioxide (containing nitrogen) the gas nitrogen dilution of the sulfur dioxide of existing 200ppm (containing nitrogen) gas and 800ppm, be configured to 100ppm sulfur dioxide and 200ppm nitrogen dioxide gaseous mixture, gas feed flow rate 1L/min, due to 100=200 × 1/2,200=800 × 1/4 is known, the flow velocity v of sulfur dioxide, nitrogen dioxide and nitrogen
1, v
2, v
3v should be met
1=1 × 1/2 L/min=500ml/min, v
2=1 × 1/4 L/min=250ml/min, v
3=1-v
1-v
2=250ml/min.
After calculating, first by the gas exhaust piping 3 of mixing chamber 5 gas outlet with need air pipe to connect, close the pressure-reducing valve of air bleeding valve 4 and each Standard Gases gas cylinder 9, control three-way air valve 6 and remain on the state connecting suspended body flowmeter 7 and exhaust gas processing device 8; Open vacuum valve 2, start vavuum pump 1 and mixing chamber 5 is evacuated, prevent air residual from affecting distribution purity; Close vacuum valve 2 and vavuum pump 1 successively afterwards; Then open the pressure-reducing valve of each Standard Gases gas cylinder successively, and regulate suspended body flowmeter 7 to setting flow speed value, after suspended body flowmeter 7 Zhong Ge road flow is all stable, three-way air valve 6 outlet is switched to mixing chamber 5; When being full of mist in mixing chamber 5, the registration of suspended body flowmeter will have the trend of reduction, now can open air valve 4 externally air feed, supply mist to be component, the satisfactory mist of concentration.This device is not affecting general application scenario under the prerequisite of required precision, ensure that simple and compact for structure, component universality is good, replacing is convenient, with low cost, easy and simple to handle.
Claims (2)
1. a mixed gas preparation device, comprise some Standard Gases gas cylinders (9), it is characterized in that: also comprise suspended body flowmeter (7), three-way air valve (6), exhaust gas processing device (8), mixing chamber (5), air bleeding valve (4), gas exhaust piping (3), vacuum valve (2), vavuum pump (1), described each Standard Gases gas cylinder (9) connects an air inlet branch road, every bar air inlet branch road is arranged a suspended body flowmeter (7) corresponding with Standard Gases gas cylinder (9), after each air inlet branch circuit parallel connection, be connected to three-way air valve (6); Described three-way air valve (6) arranges an air inlet port and two air outlet, the air inlet port of connecting tee air valve (6) after each air inlet branch circuit parallel connection, an air outlet of three-way air valve (6) connects exhaust gas processing device (8), and another air outlet connects mixing chamber (5); Described mixing chamber (5) arranges an air inlet and two gas outlets, the air outlet that the air inlet of mixing chamber (5) is corresponding with three-way air valve (6) is communicated with, the gas outlet on mixing chamber (5) top connects gas exhaust piping (3), air bleeding valve (4) is arranged on gas exhaust piping (3), the gas outlet of mixing chamber (5) bottom connects vavuum pump (1) by vacuum-pumping pipeline, and vacuum valve (2) is arranged in vacuum-pumping pipeline.
2. a kind of mixed gas preparation device according to claim 1, is characterized in that: described every bar air inlet branch road is all provided with pressure-reducing valve between standard gas bottle (9) and suspended body flowmeter (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573573.9U CN204159307U (en) | 2014-09-30 | 2014-09-30 | A kind of mixed gas preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420573573.9U CN204159307U (en) | 2014-09-30 | 2014-09-30 | A kind of mixed gas preparation device |
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| Publication Number | Publication Date |
|---|---|
| CN204159307U true CN204159307U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420573573.9U Expired - Fee Related CN204159307U (en) | 2014-09-30 | 2014-09-30 | A kind of mixed gas preparation device |
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| CN (1) | CN204159307U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126718A (en) * | 2015-07-23 | 2015-12-09 | 广州达意隆包装机械股份有限公司 | Blending device and blending method of H2O2 |
| CN107677317A (en) * | 2017-10-27 | 2018-02-09 | 湖北省计量测试技术研究院 | Flue dust gas sampling comprehensive detection system |
| CN108159987A (en) * | 2018-02-05 | 2018-06-15 | 南京卡佛科学仪器有限公司 | A kind of triple channel dynamic gas mixing arrangement of double blending tanks |
| CN108519380A (en) * | 2017-03-13 | 2018-09-11 | 普锐思克（武汉）科技有限公司 | The experiment platform device of laser gas detector |
| CN109603597A (en) * | 2018-12-05 | 2019-04-12 | 武汉钢铁集团气体有限责任公司 | Low concentration multi component mixed gas production system |
| CN110780041A (en) * | 2019-11-12 | 2020-02-11 | 中国原子能科学研究院 | Online calibration system and method for hydrogen isotope mixed gas concentration detection alarm instrument |
| CN111855911A (en) * | 2020-07-29 | 2020-10-30 | 中航长城计量测试(天津)有限公司 | Combustible gas distribution device |
| CN111983066A (en) * | 2020-08-10 | 2020-11-24 | 华北电力大学（保定） | Adsorption system and method for VOCs solid phase micro-extraction |
| CN117419996A (en) * | 2023-10-18 | 2024-01-19 | 北京东方计量测试研究所 | Device and method for preparing standard mixed gas by adopting flowmeter under vacuum condition |
-
2014
- 2014-09-30 CN CN201420573573.9U patent/CN204159307U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126718A (en) * | 2015-07-23 | 2015-12-09 | 广州达意隆包装机械股份有限公司 | Blending device and blending method of H2O2 |
| CN108519380A (en) * | 2017-03-13 | 2018-09-11 | 普锐思克（武汉）科技有限公司 | The experiment platform device of laser gas detector |
| CN107677317A (en) * | 2017-10-27 | 2018-02-09 | 湖北省计量测试技术研究院 | Flue dust gas sampling comprehensive detection system |
| CN108159987A (en) * | 2018-02-05 | 2018-06-15 | 南京卡佛科学仪器有限公司 | A kind of triple channel dynamic gas mixing arrangement of double blending tanks |
| CN108159987B (en) * | 2018-02-05 | 2020-09-18 | 南京卡佛科学仪器有限公司 | Three-channel dynamic gas mixing device with double mixing tanks |
| CN109603597A (en) * | 2018-12-05 | 2019-04-12 | 武汉钢铁集团气体有限责任公司 | Low concentration multi component mixed gas production system |
| CN109603597B (en) * | 2018-12-05 | 2021-06-29 | 武汉钢铁集团气体有限责任公司 | Low-concentration multi-component mixed gas production system |
| CN110780041A (en) * | 2019-11-12 | 2020-02-11 | 中国原子能科学研究院 | Online calibration system and method for hydrogen isotope mixed gas concentration detection alarm instrument |
| CN111855911A (en) * | 2020-07-29 | 2020-10-30 | 中航长城计量测试(天津)有限公司 | Combustible gas distribution device |
| CN111983066A (en) * | 2020-08-10 | 2020-11-24 | 华北电力大学（保定） | Adsorption system and method for VOCs solid phase micro-extraction |
| CN117419996A (en) * | 2023-10-18 | 2024-01-19 | 北京东方计量测试研究所 | Device and method for preparing standard mixed gas by adopting flowmeter under vacuum condition |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20170930 |