CN105617898A - CO2 mixed gas preparing device - Google Patents
CO2 mixed gas preparing device Download PDFInfo
- Publication number
- CN105617898A CN105617898A CN201511015989.4A CN201511015989A CN105617898A CN 105617898 A CN105617898 A CN 105617898A CN 201511015989 A CN201511015989 A CN 201511015989A CN 105617898 A CN105617898 A CN 105617898A
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- China
- Prior art keywords
- branch road
- mixed gas
- air
- valve
- carbonic acid
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2111—Flow rate
- B01F35/21111—Mass flow rate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sampling And Sample Adjustment (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
A CO2 mixed gas preparing device relates to a mixed gas preparing device and is provided with an air branch, a CO2 branch and a detection mechanism; the air branch is provided with an air compressor, an air filter, a primary pressure regulating valve, a purifying bottle group, a secondary pressure regulating valve and an air branch needle valve, which are connected by a hose in sequence; the CO2 branch is provided with a CO2 storage steel cylinder, a filter bottle group, a pressure regulating valve, a CO2 branch needle valve, which are connected by a hose in sequence; the detection mechanism is provided with a CO2 sensor, a transducer, an RS485-to-RS232 signal converter and a direct current power supply.
Description
Technical field
The present invention relates to mixed gas preparation facilities, especially relate to and be applicable in laboratory for simulating a kind of carbon dioxide gas mixture preparation facilities of following atmospheric carbon dioxide environment.
Background technology
The Atmospheric CO that mankind's activity causes2The rising of concentration, except making global temperatures and raising, another serious ecological problem caused is Ocean acidification. 2003, Ocean acidification problem first time was suggested on " Nature ", causes the extensive concern of scientific circles subsequently, becomes the important content in field, current international ocean scientific research forward position. Ordinary method is exactly prepare the carbon dioxide gas mixture of different concns, the following atmospheric environment of simulation, preparation acidifying seawater, the response of research marine organisms. The CO continuing to obtain desired concn can be stablized2Mixed gas is a part extremely important in whole scientific research. Due to CO in air2Concentration very low, be only 0.03%, i.e. CO2Ratio with other gas is 1:2500, according to IPCC prediction, after 100 years, and CO2Concentration be also only 0.2%. Current industrial existing CO2Gas mixture equipment, prepares the CO2Gas concentration is often very high, and precision is lower, and fluctuation is big, cannot reach experimental water and put down. On the other hand, special CO market tested2Mixed gas preparing instrument is expensive, exports tolerance less than normal, and precision fluctuation is big, limits accuracy and the repeatability of experimental design.
Because of a little, for above-mentioned situation, design a kind of simple to operate, price cheap, can obtain the mixed gas device of the low carbon dioxide concentration of setting continually and steadily, for simulating following atmospheric environment.
Summary of the invention
It is an object of the invention to provide that structure is simple, easy to operate, price is cheap, it is possible to a kind of carbon dioxide gas mixture preparation facilities of long-time, stable acquisition low concentration of carbon dioxide mixed gas.
The present invention is provided with air branch road, carbonic acid gas branch road and feeler mechanism;
Described air branch road is provided with air compressor, air filter, relief valve, purification bottle group, No. two relief valves and air branch road needle type valve, and described air compressor, air filter, relief valve, purification bottle group, No. two relief valves, air branch road needle type valves are successively with hose connection;
Described carbonic acid gas branch road is provided with carbon dioxide storage steel cylinder, filter flask group, pressure regulator valve, carbonic acid gas branch road needle type valve, and described carbon dioxide storage steel cylinder, filter flask group, pressure regulator valve, carbonic acid gas branch road needle type valve are successively with hose connection;
Described feeler mechanism is provided with CO2Sensor, transmitter, RS485 RS 232 signal converter, direct supply; Direct supply is to CO2Sensor and transmitter are powered, CO2Sensor inlet mouth connects the mixed gas outlet of mixed gas cylinder, CO2Sensor surveyed CO2Concentration of analog signal exports termination transmitter input terminus, and the digital signal output end of transmitter connects computer through RS485 RS 232 signal converter, by transmitter software reading data in real-time. By the CO measured in real time2Concentration, the carbonic acid gas branch road needle type valve of regulation of carbon dioxide branch road makes the CO in mixed gas2Concentration reaches set(ting)value, and the main road of mixed gas outlet of mixed gas cylinder is used for experiment, and the mixed gas outlet bypass of mixed gas cylinder meets feeler mechanism.
The gas pressure intensity exported due to air compressor can change with the change of the working order of air compressor machine, and therefore the present invention carries out the pressure regulation of twice at air branch road, it is ensured that air output flow relatively stable, for experimental precision is given security. In addition, the purification bottle group of air branch road is made up of with Calcium Chloride Powder Anhydrous sodica calx, removes the carbonic acid gas in air with moisture content, obtains the dry air without carbonic acid gas; The filter flask group weighting material of carbonic acid gas branch road is Calcium Chloride Powder Anhydrous, it is intended that removes moisture content and obtains dry carbon dioxide. Bottle group is made up of 2 and joint group, and wherein one group as main group, and during plant running, gas is by this group, and another group is secondary group, switches to secondary group when more change owner group filter flask or main group break down. Main group realizes by being arranged on the ball valve of each group of air inlet end and outlet side with the switching of secondary group. A tee ball valve is separately installed in the outlet side of main group, is vented for pressure release before more change owner group medicine. The needle-valve adopted due to the present invention regulates flow by bolt, cannot display quality flow, so needing to be demarcated by the flow of different valve regulated position by mass flowmeter, try to achieve both linear relationships, according to linear relationship, directly converse the mass rate corresponding to scale of needle type valve. The mixed gas CO converting out by the ratio of two branch road gas mass flows2Concentration, often because the factors such as the precision of under meter and measured value exist certain deviation, it is thus desirable to flow carries out fine tuning again by measurement part, makes it to reach the value of setting.
The present invention follows the flow of carbonic acid gas by valve regulated air, by both with the mixing of different throughput ratios, obtains the mixed gas of different gas concentration lwevel. The air of setting and the flow of carbonic acid gas is obtained by pressure maintaining valve and variable valve; Two-way gas enters hybrid bottle, increases a fan, it is possible to obtain mixed gas continuously in hybrid bottle. Whole process implementation laboratory fast and easy obtains the carbonic acid gas of the lower concentration of setting accurately, the following Ocean acidification phenomenon of simulation.
The technical solution adopted in the present invention: by regulating the throughput ratio of air and carbonic acid gas, obtains the mixed gas of different gas concentration lwevel.
The present invention has the following advantages:
1., with pressure maintaining valve and needle type valve control gas flow, pressure-stabilisation can be obtained, export gas accurately, and price is cheap, it is easy to obtain.
2. adopt purification bottle group to remove the carbonic acid gas in air and moisture content, the result error that the different local Carbon Dioxide in Air background concentration of eliminating is different and causes, applicable in various envrionment conditions.
3. add fan in gas mixing bottle, owing to increasing the disturbance of gas flowing in bottle, gas and vapor permeation effect is improved greatly, ensure that gas Homogeneous phase mixing exports.
4. the work output of gas mixture is big, can zoom output gas flow amount as requested.
5. structure is simple, precision height, makes simple, with low cost, is convenient to promote.
6. by CO2The measurement part of sensor composition, it is possible to CO prepared by device2Gas concentration carries out Real-Time Monitoring, convenient adjustment.
Accompanying drawing explanation
Fig. 1 is the structure composition frame chart of the embodiment of the present invention.
Fig. 2 is feeler mechanism's structure composition schematic diagram of the embodiment of the present invention.
Fig. 3 is the linear relationship chart of embodiment of the present invention mass rate and float.
Fig. 4 is the linear relationship chart of embodiment of the present invention compass numerical value and mass rate.
Embodiment
See Fig. 1 and 2, the embodiment of the present invention is provided with air branch road, carbonic acid gas branch road and feeler mechanism; Described air branch road is provided with air compressor 1, air filter 2, relief valve 3, purification bottle group No. 4, two relief valves 5 and air branch road needle type valve 6, and described air compressor 1, air filter 2, relief valve 3, purification bottle group No. 4, two relief valves 5, air branch road needle type valve 6 are successively with hose connection; Described carbonic acid gas branch road is provided with carbon dioxide storage steel cylinder 7, filter flask group 8, pressure regulator valve 9, carbonic acid gas branch road needle type valve 10, and described carbon dioxide storage steel cylinder 7, filter flask group 8, pressure regulator valve 9, carbonic acid gas branch road needle type valve 10 are successively with hose connection; Described feeler mechanism is provided with CO2Sensor 12, transmitter 13, RS485 RS 232 signal converter, direct supply; Direct supply is to CO2Sensor and transmitter are powered, CO2Sensor inlet mouth connects the mixed gas outlet of mixed gas cylinder 11, CO2Sensor surveyed CO2Concentration of analog signal exports termination transmitter input terminus, and the digital signal output end of transmitter connects computer 14 through RS485 RS 232 signal converter, by transmitter software reading data in real-time. By the CO measured in real time2Concentration, the carbonic acid gas branch road needle type valve 10 of regulation of carbon dioxide branch road makes the CO in mixed gas2Concentration reaches set(ting)value, and the main road of mixed gas outlet of mixed gas cylinder 11 is used for experiment, and the mixed gas outlet bypass of mixed gas cylinder meets feeler mechanism.
In the present embodiment, air compressor 1 air out removes moisture content with carbonic acid gas by purification bottle group 4, controls pressure by No. two relief valves 5, then the air flow quantity needed for regulating through air branch road needle type valve 6 scale obtains the gas of air branch road; CO2Gas cylinder gas out removes moisture content by filter flask group 8, controls pressure by pressure regulator valve 9, and the carbon-dioxide flow needed for regulating through carbonic acid gas branch road needle type valve 10 scale measures the gas of carbonic acid gas branch road; Two-way gas is mixed by hybrid bottle 11, obtains the mixed gas of required gas concentration lwevel.
Gas flow is demarcated:
1. air flow quantity is demarcated as follows: after gas circuit connects, metering pin valve, is transferred to the ball float position of spinner-type flowmeter the position of 1L/min, is now connected with the input terminus of mass flowmeter by the output terminal of spinner-type flowmeter, measures actual mass rate. Mass flowmeter is connected with computer, and flux values is shown by software and processes. Same step measures 2,3,4,5,6,7,8, the mass rate of 9L/min, and calculate both linear relationships (see Fig. 3);
2.CO2Flow calibration is as follows: after gas circuit connects, and the input terminus of the output terminal of needle-valve with mass flow sensor, in different positions, is linked by the compass on metering pin valve, measures actual mass rate. Sensor is connected with computer, and flux values is shown by software and processes. After measurement completes, calculate the linear relationship of compass reading and mass rate. Its linear relationship as shown in Figure 4, according to the scale of the needle type valve drawn with the linear relationship between flow, can release the flow corresponding to arbitrary scale.
The preparation of mixed gas: experimentally demand determines the flow of required gas mixture, i.e. air flow quantity (CO2Flow is much smaller than air, so mixed gas flow can be approximately air flow quantity), then calculate CO2Necessary flow. Result according to previous step flow calibration, is transferred to the position specified by needle-valve. Now regulate CO again according to the reading detecting device2The needle-valve of gas circuit is finely tuned, until mixed gas concentration reaches set(ting)value.
Embodiment 1
Relation between scale according to above-mentioned measured needle type valve and flow, air branch road is regulated to regulate flow to be 4.79slm (L/min), carbonic acid gas bypass flow is 5sccm (ml/min), and two-way gas and vapor permeation can allot the carbon dioxide gas mixture that concentration is 800ppm.
Embodiment 2
Relation between scale according to above-mentioned measured needle type valve and flow, regulates air branch road to regulate flow to be 5slm (L/min), and carbonic acid gas bypass flow is 9.35sccm (ml/min). The carbon dioxide gas mixture that concentration is 1500ppm can be allotted.
Embodiment 3
Relation between scale according to above-mentioned measured needle type valve and flow, regulates air branch road to regulate flow to be 4.77slm (L/min), and carbonic acid gas bypass flow is 12.29sccm (ml/min). The carbon dioxide gas mixture that concentration is 2000ppm can be allotted.
Claims (2)
1. a carbon dioxide gas mixture preparation facilities, it is characterised in that be provided with air branch road, carbonic acid gas branch road and feeler mechanism;
Described air branch road is provided with air compressor, air filter, relief valve, purification bottle group, No. two relief valves and air branch road needle type valve, and described air compressor, air filter, relief valve, purification bottle group, No. two relief valves, air branch road needle type valves are successively with hose connection;
Described carbonic acid gas branch road is provided with carbon dioxide storage steel cylinder, filter flask group, pressure regulator valve, carbonic acid gas branch road needle type valve, and described carbon dioxide storage steel cylinder, filter flask group, pressure regulator valve, carbonic acid gas branch road needle type valve are successively with hose connection;
Described feeler mechanism is provided with CO2Sensor, transmitter, RS485 RS 232 signal converter, direct supply; Direct supply is to CO2Sensor and transmitter are powered, CO2Sensor inlet mouth connects the mixed gas outlet of mixed gas cylinder, CO2Sensor surveyed CO2Concentration of analog signal exports termination transmitter input terminus, and the digital signal output end of transmitter connects computer through RS485 RS 232 signal converter, by transmitter software reading data in real-time; By the CO measured in real time2Concentration, the carbonic acid gas branch road needle type valve of regulation of carbon dioxide branch road makes the CO in mixed gas2Concentration reaches set(ting)value, and the main road of mixed gas outlet of mixed gas cylinder is used for experiment, and the mixed gas outlet bypass of mixed gas cylinder meets feeler mechanism.
2. a kind of carbon dioxide gas mixture preparation facilities as claimed in claim 1, it is characterised in that be provided with fan in described hybrid bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015989.4A CN105617898B (en) | 2015-12-29 | 2015-12-29 | A kind of carbon dioxide gas mixture preparation facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015989.4A CN105617898B (en) | 2015-12-29 | 2015-12-29 | A kind of carbon dioxide gas mixture preparation facilities |
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| Publication Number | Publication Date |
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| CN105617898A true CN105617898A (en) | 2016-06-01 |
| CN105617898B CN105617898B (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511015989.4A Active CN105617898B (en) | 2015-12-29 | 2015-12-29 | A kind of carbon dioxide gas mixture preparation facilities |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008200A (en) * | 2017-05-23 | 2017-08-04 | 淮海工学院 | Obtain the device of different gas concentration lwevels |
| CN110639377A (en) * | 2019-09-24 | 2020-01-03 | 西安鸿钧睿泽新材料科技有限公司 | Device and method for preparing carbon dioxide gas containing air and having different concentrations |
| CN113686630A (en) * | 2021-07-30 | 2021-11-23 | 云汇环保科技南通有限公司 | CO for novel simulation of real condition2Generator and method for generating a voltage |
| CN117110819A (en) * | 2023-10-18 | 2023-11-24 | 清华大学深圳国际研究生院 | Gas insulation strength testing device |
Citations (5)
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| GB191312002A (en) * | 1913-05-22 | 1914-03-05 | Edwin Charles Jones | Improvements in or relating to Air and Gas Mixers. |
| CN1159019A (en) * | 1996-12-20 | 1997-09-10 | 宝山钢铁(集团)公司 | Mixed gas compounding method and equipment |
| CN101138709A (en) * | 2007-06-25 | 2008-03-12 | 天津内燃机研究所 | Multi-channel mixed gas formulating system |
| JP4604113B2 (en) * | 2008-06-20 | 2010-12-22 | 武陽ガス株式会社 | Gas supply device |
| CN204429223U (en) * | 2014-12-17 | 2015-07-01 | 大连光明特种气体有限公司 | High-precision standard gas distribution equipment |
-
2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191312002A (en) * | 1913-05-22 | 1914-03-05 | Edwin Charles Jones | Improvements in or relating to Air and Gas Mixers. |
| CN1159019A (en) * | 1996-12-20 | 1997-09-10 | 宝山钢铁(集团)公司 | Mixed gas compounding method and equipment |
| CN101138709A (en) * | 2007-06-25 | 2008-03-12 | 天津内燃机研究所 | Multi-channel mixed gas formulating system |
| JP4604113B2 (en) * | 2008-06-20 | 2010-12-22 | 武陽ガス株式会社 | Gas supply device |
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Non-Patent Citations (1)
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| 董文宾主编: "《食品工厂环境检测》", 31 January 2004, 化学工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008200A (en) * | 2017-05-23 | 2017-08-04 | 淮海工学院 | Obtain the device of different gas concentration lwevels |
| CN110639377A (en) * | 2019-09-24 | 2020-01-03 | 西安鸿钧睿泽新材料科技有限公司 | Device and method for preparing carbon dioxide gas containing air and having different concentrations |
| CN113686630A (en) * | 2021-07-30 | 2021-11-23 | 云汇环保科技南通有限公司 | CO for novel simulation of real condition2Generator and method for generating a voltage |
| CN117110819A (en) * | 2023-10-18 | 2023-11-24 | 清华大学深圳国际研究生院 | Gas insulation strength testing device |
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| CN105617898B (en) | 2019-01-22 |
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Effective date of registration: 20190624 Address after: 361000 China (Fujian) Free Trade Pilot Zone, Xiamen, Fujian Province, No. 93 Xiangyu Road, Xiamen International Shipping Center, Building C, 4th floor, Unit B ter Patentee after: Xiamen Wangbei Biotechnology Co., Ltd. Address before: Xiamen City, Fujian Province, 361005 South Siming Road No. 422 Patentee before: Xiamen University |
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