CN105617898B - A kind of carbon dioxide gas mixture preparation facilities - Google Patents
A kind of carbon dioxide gas mixture preparation facilities Download PDFInfo
- Publication number
- CN105617898B CN105617898B CN201511015989.4A CN201511015989A CN105617898B CN 105617898 B CN105617898 B CN 105617898B CN 201511015989 A CN201511015989 A CN 201511015989A CN 105617898 B CN105617898 B CN 105617898B
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- valve
- branch
- air
- mixed gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Abstract
A kind of carbon dioxide gas mixture preparation facilities, is related to mixed gas preparation facilities.Equipped with air passage, carbon dioxide branch and testing agency；Air passage is equipped with air compressor, air filter, a pressure regulator valve, purification bottle group, secondary pressure regulator valve and air passage needle valve, and the air compressor, air filter, a pressure regulator valve, purification bottle group, secondary pressure regulator valve, air passage needle valve are successively connected with hose；The carbon dioxide branch is equipped with carbon dioxide storage steel cylinder, filtering flask group, pressure-regulating valve, carbon dioxide branch needle valve, and the carbon dioxide storage steel cylinder, filtering flask group, pressure-regulating valve, carbon dioxide branch needle valve are successively connected with hose；The testing agency is equipped with CO2Sensor, transmitter, RS485 RS 232 signal adapter, DC power supply.
Description
Technical field
The present invention relates to mixed gas preparation facilities, more particularly, to suitable for being used to simulate the following atmosphere two in laboratory
A kind of carbon dioxide gas mixture preparation facilities of carbonoxide environment.
Background technique
Atmospheric CO caused by mankind's activity2The raising of concentration, it is outer in addition to increasing global temperatures, it is caused another seriously
Ecological problem is Ocean acidification.2003, Ocean acidification problem was suggested on " Nature " for the first time, then caused section
The extensive concern of educational circles becomes the important content of current international ocean scientific research Disciplinary Frontiers.Conventional method is exactly to prepare not
With the carbon dioxide gas mixture of concentration, the following atmospheric environment is simulated, preparation acidification seawater studies the response of marine organisms.Energy
The CO of concentration needed for no stabilization persistently obtains2Mixed gas is very important a part in entire scientific research.Due to air
Middle CO2Concentration it is very low, only 0.03%, i.e. CO2Ratio with other gases is 1:2500, is predicted according to IPCC, after 100 years,
CO2Concentration also only be 0.2%.Industrial existing CO at present2Gaseous mixture equipment, the CO prepared2Gas concentration is often very
Height, and precision is lower, fluctuation is big, and it is flat to be unable to reach experimental water.On the other hand, the special CO of experiment in the market2Mixing
Gas preparing instrument is expensive, and output tolerance is less than normal, and precision fluctuation is big, limits the accuracy and repeatability of experimental design.
Because a little, for above situation, design it is a kind of it is easy to operate, cheap, can continually and steadily obtain the low of setting
The mixed gas device of gas concentration lwevel, for simulating the following atmospheric environment.
Summary of the invention
The object of the present invention is to provide structures to be simple and convenient to operate, cheap, can for a long time, stable acquisition it is low
A kind of carbon dioxide gas mixture preparation facilities of concentration carbon dioxide gas mixture.
The present invention is equipped with air passage, carbon dioxide branch and testing agency；
The air passage is equipped with air compressor, air filter, a pressure regulator valve, purification bottle group, secondary pressure regulator valve
With air passage needle valve, the air compressor, air filter, a pressure regulator valve, purification bottle group, secondary pressure regulator valve, sky
Gas branch needle valve is successively connected with hose；
The carbon dioxide branch is equipped with carbon dioxide storage steel cylinder, filtering flask group, pressure-regulating valve, carbon dioxide branch
Needle valve, the carbon dioxide storage steel cylinder, filtering flask group, pressure-regulating valve, carbon dioxide branch needle valve successively use hose
Connection；
The testing agency is equipped with CO2Sensor, transmitter, RS485 RS 232 signal adapter, DC power supply；Direct current
Power supply is to CO2Sensor and transmitter power supply, CO2Sensor air inlet meets the mixed gas outlet of mixed gas cylinder, CO2Sensor
Surveyed CO2Concentration of analog signal output end connects transmitter input terminal, and the digital signal output end of transmitter is through RS485 RS 232
Signal adapter connects computer, passes through transmitter software reading data in real-time.Pass through the CO of real-time measurement2Concentration adjusts titanium dioxide
The carbon dioxide branch needle valve of carbon branch makes the CO in mixed gas2Concentration reaches setting value, and the mixed gas of mixed gas cylinder goes out
For mouth main road for testing, the mixed gas outlet bypass of mixed gas cylinder meets testing agency.
Since the gas pressure intensity of air compressor output can change with the variation of the working condition of air compressor machine,
The present invention carries out pressure regulation twice in air passage, it is ensured that air flow throughput it is relatively stable, provide guarantee for experimental precision.
In addition, the purification bottle group of air passage is made of soda lime with anhydrous calcium chloride, the carbon dioxide in air is removed with moisture content, is obtained
To the dry air without carbon dioxide；The filtering flask group filler of carbon dioxide branch is anhydrous calcium chloride, it is therefore an objective to remove water
Part obtains dry carbon dioxide gas.Bottle group is made of 2 groups in parallel, wherein one group as main group, gas when device is run
By the group, another group is secondary group, switches to secondary group when more change owner group filter flask or main group of failure.Main group and secondary group
Switching is realized by being mounted on the ball valve of each group inlet end and outlet side.A three-way ball valve is separately installed in main group of outlet side, uses
Pressure release is vented before more change owner group drug.Since the needle-valve that the present invention uses is to adjust flow by bolt, matter can not be shown
Flow is measured, so needing to demarcate by flow of the mass flowmenter to different valve regulated positions, acquires the linear of the two
Relationship directly converses mass flow corresponding to the scale of needle valve according to linear relationship.Pass through two branch gaseous masses
The ratio of flow converses the mixed gas CO come2Concentration, often because of factors such as precision of flowmeter, there are one with measured value
Determine deviation, it is therefore desirable to fine tuning be carried out to flow again by measurement part, make up to the value of setting.
The present invention, with the flow of carbon dioxide, the two is mixed with different flow-rate ratios, is obtained by valve regulated air
The mixed gas of different gas concentration lwevels.The air of setting and the flow of carbon dioxide are obtained by pressure maintaining valve and regulating valve；
Two-way gas enters hybrid bottle, increases a fan in hybrid bottle, can continuously obtain mixed gas.Whole process realizes reality
The carbon dioxide that room fast and easy accurately obtains the low concentration of setting is tested, the following Ocean acidification phenomenon is simulated.
The technical solution adopted in the present invention: the flow-rate ratio by adjusting air and carbon dioxide obtains different titanium dioxides
The mixed gas of concentration of carbon.
The invention has the following advantages that
1. controlling gas flow with pressure maintaining valve and needle valve, pressure stabilization, output accurately gas can be obtained, and price is just
Preferably, it is easy to get.
2. excluding different places Carbon Dioxide in Air back using carbon dioxide and moisture content in purification bottle group removal air
Result error caused by scape concentration is different, is applicable to various environmental conditions.
3. adding fan in gas mixing bottle, due to increasing the disturbance that gas flows in bottle, make gas mixing effect significantly
It improves, guarantees that gas uniformly mixes output.
It, can be according to requiring zoom output gas flow amount 4. the output quantity of gaseous mixture is big.
5. structure is simple, precision is high, and production is simple, low in cost, convenient for promoting.
6. by CO2The measurement part of sensor composition, the CO that device can be prepared2Gas concentration carries out real-time monitoring, side
Just it adjusts.
Detailed description of the invention
Fig. 1 is the structure composition block diagram of the embodiment of the present invention.
Fig. 2 is testing agency's structure composition schematic diagram of the embodiment of the present invention.
Fig. 3 is the linear relationship chart of mass flow of the embodiment of the present invention and float.
Fig. 4 is the linear relationship chart of compass of embodiment of the present invention numerical value and mass flow.
Specific embodiment
Referring to Fig. 1 and 2, the embodiment of the present invention is equipped with air passage, carbon dioxide branch and testing agency；The air branch
Road is equipped with air compressor 1,2, pressure regulator valves 3 of air filter, purification bottle group 4, secondary pressure regulator valve 5 and air passage needle-like
Valve 6, the air compressor 1, air filter 2, pressure regulator valves 3, purification bottle group 4, secondary pressure regulator valve 5, an air passage needles
Type valve 6 is successively connected with hose；The carbon dioxide branch is equipped with carbon dioxide storage steel cylinder 7, filtering flask group 8, pressure and adjusts
Valve 9, carbon dioxide branch needle valve 10, the carbon dioxide storage steel cylinder 7, filtering flask group 8, pressure-regulating valve 9, carbon dioxide
Branch needle valve 10 is successively connected with hose；The testing agency is equipped with CO2Sensor 12, transmitter 13, RS485 RS 232
Signal adapter, DC power supply；DC power supply is to CO2Sensor and transmitter power supply, CO2Sensor air inlet connects mixed gas cylinder 11
Mixed gas outlet, CO2The surveyed CO of sensor2Concentration of analog signal output end connects transmitter input terminal, the number of transmitter
Signal output end connects computer 14 through RS485 RS 232 signal adapter, passes through transmitter software reading data in real-time.Pass through reality
When the CO that measures2The carbon dioxide branch needle valve 10 of concentration, regulation of carbon dioxide branch makes the CO in mixed gas2Concentration reaches
To setting value, for the mixed gas outlet main road of mixed gas cylinder 11 for testing, the mixed gas outlet bypass of mixed gas cylinder connects detection machine
Structure.
In the present embodiment, the air that air compressor 1 comes out removes moisture content with carbon dioxide by purification bottle group 4, passes through
Secondary pressure regulator valve 5 controls pressure, and the air mass flow needed for adjusting using 6 scale of air passage needle valve obtains air passage
Gas；CO2The gas that gas cylinder comes out removes moisture content by filtering flask group 8, pressure is controlled by pressure-regulating valve 9, by dioxy
Change the gas that the carbon dioxide stream needed for 10 scale of carbon branch needle valve is adjusted measures carbon dioxide branch；Two-way gas passes through mixed
It closes bottle 11 to mix, obtains the mixed gas of required gas concentration lwevel.
Gas flow calibration:
1. air mass flow calibration is as follows: after gas circuit connects, the float position of spinner flowmeter is transferred to 1L/ by metering pin valve
The input terminal of the output end of spinner flowmeter and mass flowmenter is connected at this time, measures actual quality stream by the position of min
Amount.Mass flowmenter is connect with computer, and flow value is shown and handled by software.Same step measurement 2,3,4,5,6,7,8,
The mass flow of 9L/min, and calculate the linear relationship (referring to Fig. 3) of the two；
2.CO2Flow calibration is as follows: after gas circuit connects, the compass on metering pin valve is in different positions, by the defeated of needle-valve
Outlet and the input terminal of mass flow sensor link, and measure actual mass flow.Sensor is connect with computer, and flow value is logical
Software is crossed to show and handle.After being measured, the linear relationship of compass reading and mass flow is calculated.Its linear relationship such as Fig. 4
It is shown, according to the scale of the needle valve obtained with the linear relationship between flow, flow corresponding to any scale can be released.
The preparation of mixed gas: the flow of gaseous mixture needed for being determined according to experiment demand, i.e. air mass flow (CO2Flow is remote
Less than air, so mixed gas flow can be approximately air mass flow), then calculate CO2Required flow.According to previous step flux scale
It is fixed as a result, needle-valve to be transferred to specified position.CO is adjusted according to the reading of detection device again at this time2The needle-valve of gas circuit carries out micro-
It adjusts, until mixed gas concentration reaches setting value.
Embodiment 1
According to the relationship between the scale and flow of above-mentioned measured needle valve, adjusting air passage adjusting flow is
4.79slm (L/min), carbon dioxide bypass flow are 5sccm (ml/min), and two-way gas mixing can allot concentration and be
The carbon dioxide gas mixture of 800ppm.
Embodiment 2
According to the relationship between the scale and flow of above-mentioned measured needle valve, adjusting air passage adjusting flow is
5slm (L/min), carbon dioxide bypass flow are 9.35sccm (ml/min).The titanium dioxide that concentration is 1500ppm can be allotted
Carbon mixed gas.
Embodiment 3
According to the relationship between the scale and flow of above-mentioned measured needle valve, adjusting air passage adjusting flow is
4.77slm (L/min), carbon dioxide bypass flow are 12.29sccm (ml/min).Two that concentration is 2000ppm can be allotted
Carbon dioxide gas mixture.
Claims (1)
1. a kind of carbon dioxide gas mixture preparation facilities, it is characterised in that be equipped with air passage, carbon dioxide branch and detection
Mechanism；
The air passage is equipped with air compressor, air filter, a pressure regulator valve, purification bottle group, secondary pressure regulator valve and sky
Gas branch needle valve, the air compressor, air filter, a pressure regulator valve, purification bottle group, secondary pressure regulator valve, air branch
Road needle valve is successively connected with hose；
The carbon dioxide branch is equipped with carbon dioxide storage steel cylinder, filtering flask group, pressure-regulating valve, carbon dioxide branch needle-like
Valve, the carbon dioxide storage steel cylinder, filtering flask group, pressure-regulating valve, carbon dioxide branch needle valve are successively connected with hose；
The testing agency is equipped with CO2Sensor, transmitter, RS485 RS 232 signal adapter, DC power supply；DC power supply
To CO2Sensor and transmitter power supply, CO2Sensor air inlet meets the mixed gas outlet of mixed gas cylinder, CO2Sensor is surveyed
CO2Concentration of analog signal output end connects transmitter input terminal, and the digital signal output end of transmitter is through RS485 RS 232 signal
Converter connects computer, passes through transmitter software reading data in real-time；Pass through the CO of real-time measurement2Concentration, regulation of carbon dioxide branch
The carbon dioxide branch needle valve on road makes the CO in mixed gas2Concentration reaches setting value, mixes the mixed gas outlet master of gas cylinder
For testing, the mixed gas outlet bypass of mixed gas cylinder meets testing agency on road；Fan is equipped in the hybrid bottle；It is empty by adjusting
The flow-rate ratio of gas and carbon dioxide obtains the mixed gas of different gas concentration lwevels；
The air passage needle valve and carbon dioxide branch needle valve adjust flow by bolt, and are required to pass through quality
Flowmeter demarcates the flow of different valve regulated positions；
The carbon dioxide gas mixture preparation facilities can compound concentration range be 800~2000ppm carbon dioxide mix
Gas.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105617898A CN105617898A (en) | 2016-06-01 |
| CN105617898B true CN105617898B (en) | 2019-01-22 |
Family
ID=56033475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511015989.4A Active CN105617898B (en) | 2015-12-29 | 2015-12-29 | A kind of carbon dioxide gas mixture preparation facilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105617898B (en) |
Families Citing this family (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 |
| CN110639377B (en) * | 2019-09-24 | 2021-09-07 | 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)
| 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 |
| 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
- 2015-12-29 CN CN201511015989.4A patent/CN105617898B/en active Active
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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105617898A (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105617898B (en) | A kind of carbon dioxide gas mixture preparation facilities | |
| CN202512104U (en) | Dynamic gas calibration instrument | |
| CN201260940Y (en) | Separated flow type standard humidity generator | |
| CN103399127B (en) | A kind of gas analyzer calibration measurements device and calibration measuring method thereof | |
| CN102586097B (en) | Device of continuously testing indoor soil microbial respiration | |
| CN102294185B (en) | Gas preparation apparatus for preparing gas with imitative human exhaled air ratio and regulation of temperature/humidity, and method thereof | |
| CN201692468U (en) | Intelligent fresh gas flow and oxygen concentration control device of anesthetic apparatus | |
| CN209055534U (en) | A kind of device for distributing standard gas for environmental gas analyzer calibration | |
| CN101943691A (en) | Device and method for checking SF6 gas leakage monitoring and alarming apparatuses | |
| CN101829386A (en) | Intelligent fresh gas flow and oxygen concentration control device for anesthesia machine | |
| CN102680662B (en) | Device and method for synchronously determining soil substrate and gas emission | |
| CN101881761A (en) | Humidity adjustable high precision closed loop gas distribution system | |
| CN103143293B (en) | Standard mixed gas preparation device | |
| CN104225745A (en) | Calibration device of breathing machine tester | |
| CN201697907U (en) | Checking apparatus of SF 6 gas leakage monitoring alarm | |
| CN205920102U (en) | Gas sensor calibration system | |
| CN214252216U (en) | Pump suction type gas detector calibrating device | |
| CN202346770U (en) | Automatic hydrogenation device for nitrogen purification | |
| CN108241394B (en) | Ocean acidification and hypoxia simulation device and control method thereof | |
| CN113419036A (en) | Portable flue gas monitoring data acquisition system, device and method based on 5G communication | |
| CN105699596B (en) | A kind of alarm detection device and its method | |
| CN103853201B (en) | The device of a kind of adjustment water body pH that warms for simulation climate | |
| CN109445493B (en) | Temperature, humidity and dew point generator, control system and test method thereof | |
| RU114528U1 (en) | DEVICE FOR PREPARING TEST GAS MIXTURES IN DYNAMIC MODE | |
| CN201216146Y (en) | Controlled atmosphere storage tester for garden stuff |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
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 |
|
| TR01 | Transfer of patent right |