CN212059624U - On-site gas mixing generating device - Google Patents
On-site gas mixing generating device Download PDFInfo
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- CN212059624U CN212059624U CN202020652073.XU CN202020652073U CN212059624U CN 212059624 U CN212059624 U CN 212059624U CN 202020652073 U CN202020652073 U CN 202020652073U CN 212059624 U CN212059624 U CN 212059624U
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Abstract
The utility model discloses a field gas mixing generating device, which comprises a mixed gas detection cabin internally provided with a gas concentration sensor, wherein the gas inlet end of the mixed gas detection cabin is connected with the gas outlet end of a gas mixing container; the gas outlet end of the mixed gas detection cabin is connected with a waste gas treatment device through a gas exhaust fan; the gas inlet end of the gas mixing container is respectively connected with the pure gas source branch and the air branch; the pure gas source branch comprises a pure gas source container, and a gas pressure gauge, a pressure reducing valve, a pure gas flow control valve and a pure gas flowmeter are sequentially arranged on a connecting pipeline of the pure gas source container and the gas inlet end of the gas mixing container. The utility model discloses with the pure measured gas and the on-the-spot mixture of natural air, through the aperture control of two way flow control valves, form the gas environment of arbitrary concentration, can obtain the mist of requirement concentration fast, reduce the cost that adopts standard concentration gas.
Description
Technical Field
The utility model belongs to the technical field of gas concentration detection, concretely relates to scene mixes gas generating device.
Background
For the detection of gas environment with special concentration requirement, the existing gas environment generating device mostly adopts standard gas with calibrated concentration for detection, firstly, the standard gas with specified concentration is used for creating gas environment, and then a corresponding gas concentration sensor is placed in the environment for verification. The existing gas environment generating device adopts standard gas to create a gas environment to verify a gas concentration sensor, is simple and easy to operate, but causes great economic burden for mass production and use because the cost for manufacturing and transporting the standard gas is higher.
Disclosure of Invention
The utility model provides a technical problem provide a scene mixes gas generating device, can obtain the mist that requires concentration fast, reduces the cost that detects the link.
The utility model discloses a realize through following technical scheme:
an on-site gas mixing generating device comprises a mixed gas detection cabin internally provided with a gas concentration sensor, wherein the gas inlet end of the mixed gas detection cabin is connected with the gas outlet end of a gas mixing container; the gas outlet end of the mixed gas detection cabin is connected with a waste gas treatment device through a gas exhaust fan;
the gas inlet end of the gas mixing container is respectively connected with the pure gas source branch and the air branch; the pure gas source branch comprises a pure gas source container, and a connecting pipeline of the pure gas source container and the gas inlet end of the gas mixing container is sequentially provided with a gas pressure gauge, a pressure reducing valve, a pure gas flow control valve and a pure gas flowmeter; the air branch comprises an air extractor, and an air flow control valve and an air flow meter are sequentially arranged on a connecting pipeline of the air extractor and the air inlet end of the gas mixing container.
Furthermore, the gas concentration sensor is connected with a power supply, and a circuit switch, a circuit safety device and an ammeter are arranged on a circuit connecting the gas concentration sensor with the power supply; a voltmeter is connected in parallel between the ammeter and the power supply.
Furthermore, the air pressure meter and the pressure reducing valve are arranged close to the purified air source container.
Furthermore, the purified gas flow control valve and the purified gas flowmeter are arranged between the pressure reducing valve and the gas mixing container.
Further, the air extracting device is an air axial flow fan or a booster pump.
Furthermore, absorption liquid for absorbing waste gas is placed in the waste gas treatment device.
Furthermore, a plurality of turbulent flow devices for accelerating gas mixing are arranged in the gas mixing container.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a scene mixes gas generating device carries pure air supply, natural air to gas mixing container respectively through pure air supply branch road and air branch road and mixes the back, carries again to the mist detects the cabin and carries out gas concentration detection. The utility model discloses with the standard gas of pure air supply configuration different concentrations at the production site, need not the good standard gas of transportation configuration, the on-the-spot field test of preparing has greatly reduced the detection cost, has also guaranteed the accuracy of being surveyed gas concentration. The utility model discloses mix pure surveyed gas and on-the-spot natural air, through the aperture control of two way flow control valves, form the gas environment of arbitrary concentration, be suitable for different gas concentration sensor, can obtain the mist of required concentration fast, reduced the detection cost that gas concentration detected.
Drawings
FIG. 1 is a flow chart of the on-site gas mixing generator of the present invention;
fig. 2 is a working circuit diagram of the gas sensor of the present invention;
the device comprises a pure gas source container 1, a pressure gauge 2, a pressure reducing valve 3, a pure gas flow control valve 4, a pure gas flowmeter 5, an air extractor 6, an air flow control valve 7, an air flowmeter 8, a gas mixing container 9, a mixed gas detection cabin 10, an exhaust fan 11, a waste gas treatment device 12, a gas concentration sensor 13, a circuit safety device 14, an ammeter 15, a circuit switch 16, a power supply 17 and a voltmeter 18.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are provided for purposes of illustration and not limitation.
Referring to fig. 1 and 2, an on-site mixed gas generating device comprises a mixed gas detection cabin 10 with a gas concentration sensor 13 arranged therein, wherein the gas inlet end of the mixed gas detection cabin 10 is connected with the gas outlet end of a gas mixing container 9; the gas outlet end of the mixed gas detection cabin 10 is connected with a waste gas treatment device 12 through an exhaust fan 11;
the gas inlet end of the gas mixing container 9 is respectively connected with the pure gas source branch and the air branch; the pure gas source branch comprises a pure gas source container 1, and a gas pressure gauge 2, a pressure reducing valve 3, a pure gas flow control valve 4 and a pure gas flowmeter 5 are sequentially arranged on a connecting pipeline of the pure gas source container 1 and the gas inlet end of the gas mixing container 9; the air branch comprises an air extractor 6, and an air flow control valve 7 and an air flow meter 8 are sequentially arranged on a connecting pipeline of the air extractor 6 and the air inlet end of the gas mixing container 9.
Further, referring to fig. 2, the gas concentration sensor 13 is connected to a power supply 17, and a circuit switch 16, a circuit safety device 14 and an ammeter 15 are arranged on a circuit connecting the gas concentration sensor 13 and the power supply 17; a voltmeter 18 is connected in parallel between the ammeter 15 and the power supply 17.
The utility model discloses a pure gas source container 1 is a high-pressure gas storage tank, which is used for continuously providing stable detected gas; a pressure reducing valve 3, a pure gas flow control valve 4 and a pure gas flowmeter 5 are arranged on a connecting pipeline of the pure gas source container 1 and the gas mixing container 9, and the pure gas flow control valve is used for controlling the output quantity of pure detected gas so as to achieve the required gas concentration.
The utility model discloses be applied to the mixture of two kinds of gas that can not react, the gaseous environment that forms by different gaseous mixtures usually can all adopt the utility model discloses the device disposes. Methane CH, e.g. for use in natural gas leak detection4Compressed Natural Gas (CNG) leakage detection in the automobile industry and mixed with air.
It should be noted that the air extractor 6 is used to provide a proper amount of natural air to adjust the concentration of the detected gas in the mixed gas detection chamber 10, and the air extractor 6 is an air axial flow fan or a booster pump. An air flow control valve 7 and an air flow meter 8 are arranged on a connecting pipeline of the air extractor 6 and the gas mixing container 9, and the air flow control valve and the air flow meter are used for controlling the mixing amount of natural air of the detected gas so as to achieve the required gas concentration. The gas concentration sensor 13 is connected with an external control unit, the gas concentration sensor 13 detects the concentration of the gas to be detected in the environment, and the gas concentration sensor 13 sends a signal to the external control unit when the concentration of the gas to be detected reaches a set signal output value. Specifically, the gas concentration sensor 13 may be a gas concentration sensor of the type TGS 2611-COO. After the detection is finished, the exhaust fan conveys the detected gas in the detection cabin to the waste gas treatment device, so as to provide a new detection environment for the mixed gas detection cabin 10.
When the gas sensor detection device provided by the utility model is used, firstly, the exhaust fan 11 is started to exhaust the gas in the mixed gas detection cabin 10, so that the mixed gas detection cabin 10 reaches a natural environment state; then the air extractor 6 is started, natural air is filled into the mixed gas detection cabin 10, and the mixed gas detection cabin 10 is cleaned for the second time; then, the exhaust fan 11 is closed, the pure gas source container 1 is opened, the opening degrees of the pure gas flow control valve 4 and the air flow control valve 7 are set according to the required detection concentration, and pure detected gas and natural air enter the gas mixing container 9 in proportion to be mixed and then enter the mixed gas detection cabin 10; a gas concentration sensor 13 in the mixed gas detection chamber 10 detects a gas concentration value, and the gas concentration sensor 13 transmits a gas concentration signal to an external control unit. After the detection is finished, the exhaust fan 11 is started, and the mixed gas in the mixed gas detection cabin 10 enters the waste gas treatment device 12 through the exhaust fan 11 for treatment.
Further, the barometer 2 and the pressure reducing valve 3 are arranged close to the purified gas source container 1.
Further, the purified gas flow control valve 4 and the purified gas flowmeter 5 are arranged between the pressure reducing valve 3 and the gas mixing container 9.
Further, the air extracting device 6 is an air axial flow fan or a booster pump.
Further, an absorption liquid for absorbing the exhaust gas is placed in the exhaust gas treatment device 12. Specifically, a filter device for filtering the exhaust gas may be provided in the exhaust gas treatment device 12.
Furthermore, a plurality of turbulent flow devices for accelerating gas mixing are arranged in the gas mixing container 9. Specifically, the turbulent device comprises a plurality of orifice plates horizontally arranged in the gas mixing container 9, and the two gases pass through the plurality of layers of orifice plates to realize mixing.
By the technical scheme, the utility model provides a scene mixes gas generating device carries pure air supply, natural air respectively to gas mixing container 9 through pure air supply branch road and air branch road and mixes the back, sends to the mist again and detects 10 and carry out gas concentration detection. The utility model discloses with the standard gas of pure air supply configuration different concentrations at the production site, need not the good standard gas of transportation configuration, the site configuration witnessed inspections has greatly reduced the detection cost, has also guaranteed the accuracy of being surveyed gas concentration.
The utility model uses the high-pressure gas storage device to store pure gas to be detected, combines with natural air, and forms gas environment with any concentration through the opening control of two paths of flow control valves, is suitable for different gas concentration sensors 13, and can quickly obtain mixed gas with required concentration; and a plurality of gas concentration sensors 13 can be arranged in the mixed gas detection cabin 10, so that the industrial batch production is facilitated, and the detection cost of gas concentration detection is reduced.
The embodiments given above are examples of implementing the principle model of the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.
Claims (7)
1. The on-site gas mixing generation device is characterized by comprising a mixed gas detection cabin (10) internally provided with a gas concentration sensor (13), wherein the gas inlet end of the mixed gas detection cabin (10) is connected with the gas outlet end of a gas mixing container (9); the gas outlet end of the mixed gas detection cabin (10) is connected with a waste gas treatment device (12) through a gas exhaust fan (11);
the gas inlet end of the gas mixing container (9) is respectively connected with the pure gas source branch and the air branch; the pure gas source branch comprises a pure gas source container (1), and a gas pressure gauge (2), a pressure reducing valve (3), a pure gas flow control valve (4) and a pure gas flowmeter (5) are sequentially arranged on a connecting pipeline of the pure gas source container (1) and the gas inlet end of the gas mixing container (9); the air branch comprises an air extractor (6), and an air flow control valve (7) and an air flow meter (8) are sequentially arranged on a connecting pipeline of the air extractor (6) and the air inlet end of the gas mixing container (9).
2. The on-site gas mixing generation device according to claim 1, wherein the gas concentration sensor (13) is connected with a power supply (17), and a circuit switch (16), a circuit safety device (14) and an ammeter (15) are arranged on a circuit connecting the gas concentration sensor (13) with the power supply (17); a voltmeter (18) is connected in parallel between the ammeter (15) and the power supply (17).
3. The on-site mixed gas generating device according to claim 1, wherein the barometer (2) and the pressure reducing valve (3) are arranged close to the purified gas source container (1).
4. The on-site mixed gas generating device according to claim 3, wherein the purified gas flow control valve (4) and the purified gas flow meter (5) are arranged between the pressure reducing valve (3) and the gas mixing container (9).
5. The on-site mixed gas generating device according to claim 1, wherein the air extractor (6) is an air axial flow fan or a booster pump.
6. The on-site mixed gas generation device according to claim 1, wherein an absorption liquid for absorbing the exhaust gas is placed in the exhaust gas treatment device (12).
7. The on-site gas mixing and generating device according to claim 1, wherein a plurality of turbulent flow devices for accelerating gas mixing are arranged in the gas mixing container (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020652073.XU CN212059624U (en) | 2020-04-26 | 2020-04-26 | On-site gas mixing generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020652073.XU CN212059624U (en) | 2020-04-26 | 2020-04-26 | On-site gas mixing generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212059624U true CN212059624U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020652073.XU Active CN212059624U (en) | 2020-04-26 | 2020-04-26 | On-site gas mixing generating device |
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| Country | Link |
|---|---|
| CN (1) | CN212059624U (en) |
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2020
- 2020-04-26 CN CN202020652073.XU patent/CN212059624U/en active Active
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