CN212236773U - Gas proportion distribution device based on multistage dilution - Google Patents
Gas proportion distribution device based on multistage dilution Download PDFInfo
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- CN212236773U CN212236773U CN202020864208.9U CN202020864208U CN212236773U CN 212236773 U CN212236773 U CN 212236773U CN 202020864208 U CN202020864208 U CN 202020864208U CN 212236773 U CN212236773 U CN 212236773U
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Abstract
The utility model discloses a gas proportion distribution device based on multistage dilution, which comprises a first gas source inlet, a second gas source inlet, a third gas source inlet, a first mixing tank, a second mixing tank, a data processing unit and a control terminal; the first gas source inlet is communicated with the first mixing tank, the first mixing tank is provided with two gas outlet ends, one gas outlet end of the first mixing tank is communicated with a first gas outlet, the other gas outlet end of the first mixing tank is communicated with the second mixing tank, and a first pressure gauge and a first flow control unit for controlling the gas flow are arranged between the first gas source inlet and the first mixing tank; the first mixing tank is connected with a second pressure gauge. The utility model discloses a distributing device distribution precision is high, and the demand that satisfies the high multiple dilution that can be fine collects the one-level and dilutes as an organic wholely with the second grade, has enlarged the application scope of device, and can automatic control dilute the pressure of process, guarantees that pressure is invariable, and intelligent degree is high.
Description
Technical Field
The utility model relates to a distribution technical field, in particular to gas proportion distribution device based on multistage dilution.
Background
Gas distribution is the process of diluting the gas concentration to obtain the required gas concentration. In the existing air distribution device, the air distribution precision is low, and the use requirement cannot be met. If the required gas concentration is too low, for example, 1/10000 of the original concentration, the required requirement cannot be met by direct gas distribution, and the intelligent degree of the existing device is low, so that the gas distribution process cannot be effectively controlled.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a gas proportion distribution device based on multistage dilution, the distribution precision is high, the demand that satisfies the high multiple dilution that can be fine, it is as an organic whole with the second grade dilution to collect the one-level dilution, has enlarged the application scope of device, and can automatic control dilute the pressure of process, guarantees that pressure is invariable, and intelligent degree is high.
The purpose of the utility model is realized through the following technical scheme:
a gas proportion distribution device based on multistage dilution comprises a first gas source inlet, a second gas source inlet, a third gas source inlet, a first mixing tank, a second mixing tank, a data processing unit and a control terminal;
the first gas source inlet is communicated with the first mixing tank, the first mixing tank is provided with two gas outlet ends, one gas outlet end of the first mixing tank is communicated with a first gas outlet, the other gas outlet end of the first mixing tank is communicated with the second mixing tank, and a first pressure gauge and a first flow control unit for controlling the gas flow are arranged between the first gas source inlet and the first mixing tank; the first mixing tank is connected with a second pressure gauge;
the second gas source inlet is respectively communicated with the first mixing tank and the second mixing tank; a third pressure gauge and a second flow control unit are arranged between the second gas source inlet and the first mixing tank, and a third flow control unit is arranged between the second gas source inlet and the second mixing tank;
the third gas source inlet is communicated with the first mixing tank; a fourth pressure gauge and a fourth flow control unit are arranged between the third gas source inlet and the first mixing tank;
a fifth flow control unit is arranged between the first mixing tank and the second mixing tank;
the signal output ends of the first pressure gauge, the second pressure gauge, the third pressure gauge and the fourth pressure gauge are respectively connected with a first signal input end, a second signal input end, a third signal input end and a fourth signal input end of the data processing unit, the first signal output end of the data processing unit is connected with the signal input end of the control terminal, and the second signal output end, the third signal output end, the fourth signal output end and the fifth signal output end of the control terminal are respectively connected with the signal input ends of the first flow control unit, the second flow control unit, the third flow control unit and the fifth flow control unit.
Furthermore, check valves are respectively connected between the first flow control unit and the first mixer, between the second flow control unit and the first mixer, between the third flow control unit and the first mixer, between the fourth flow control unit and the first mixer, and between the fifth flow control unit and the second mixer.
Furthermore, the first air source inlet, the second air source inlet and the third air source inlet are respectively provided with a filter.
Furthermore, the first flow control unit and the second flow control unit are respectively connected with an auxiliary electromagnetic valve in parallel.
The utility model has the advantages that:
1) the utility model discloses a distributing device distribution precision is high, and the demand that satisfies the high multiple dilution that can be fine collects the one-level and dilutes as an organic wholely with the second grade, has enlarged the application scope of device, and can automatic control dilute the pressure of process, guarantees that pressure is invariable, and intelligent degree is high.
2) The arranged one-way valve can prevent the mixed gas in the first mixer and the second mixer from flowing back to pollute the gas source.
3) The filter that sets up can filter the air supply, guarantees gaseous purity, the validity of diluting.
Drawings
Fig. 1 is a schematic view of the overall structure of a gas proportional distribution device based on multi-stage dilution according to an embodiment of the present invention;
fig. 2 is a control schematic block diagram of a data processing unit according to an embodiment of the present invention;
in the figure, 1, a first gas source inlet; 2. a second gas source inlet; 3. a third gas source inlet; 4. a first mixing tank; 5. a second mixing tank; 6. a data processing unit; 7. a control terminal; 8. a first gas outlet; 9. a second gas outlet; 10. a third gas outlet; 11. a first pressure gauge; 12. a first flow control unit; 13. a second pressure gauge; 14. a third pressure gauge; 15. a second flow control unit; 16. a third flow rate control unit; 17. a fourth pressure gauge; 18. a fourth flow control unit; 19. a fifth flow control unit; 20. a one-way valve; 21. a filter; 22. an auxiliary solenoid valve; 23. a first solenoid valve; 24. a first mass flow controller; 25. a second solenoid valve; 26. a second mass flow controller; 27. a third electromagnetic valve; 28. a third mass flow controller; 29. a fifth solenoid valve; 30. and a fifth mass flow controller.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution:
example (b):
a gas proportion distribution device based on multi-stage dilution comprises a first gas source inlet 1, a second gas source inlet 2, a third gas source inlet 3, a first mixing tank 4, a second mixing tank 5, a data processing unit 6 and a control terminal 7; the control terminal 7 is a computer.
The first gas source inlet 1 is communicated with the first mixing tank 4, the first mixing tank 4 is provided with two gas outlet ends, one gas outlet end of the first mixing tank 4 is communicated with a first gas outlet 8, the other gas outlet end of the first mixing tank 4 is communicated with a second mixing tank 5, the second mixing tank 5 is provided with two gas outlet ends, and the two gas outlet ends are respectively communicated with a second gas outlet 9 and a third gas outlet 10; a first pressure gauge 11 and a first flow control unit 12 for controlling the gas flow are arranged between the first gas source inlet 1 and the first mixing tank 4; the first flow control unit 12 is a first electromagnetic valve 23 and a first mass flow controller 24 which are arranged in sequence; the first mixing tank 4 is connected with a second pressure gauge 13;
the second gas source inlet 2 is respectively communicated with a first mixing tank 4 and a second mixing tank 5; a third pressure gauge 14 and a second flow control unit 15 are arranged between the second gas source inlet 2 and the first mixing tank 4, the second flow control unit 15 is a second electromagnetic valve 25 and a second mass flow controller 26 which are sequentially arranged, and a third flow control unit 16 is arranged between the second gas source inlet 2 and the second mixing tank 5; the third flow control unit 16 is a third electromagnetic valve 27 and a third mass flow controller 28 which are arranged in sequence;
the third gas source inlet 3 is communicated with the first mixing tank 4; a fourth pressure gauge 17 and a fourth flow control unit 18 are arranged between the third gas source inlet 3 and the first mixing tank 4 (wherein, the fourth flow control unit 18 is a fourth mass flow controller);
a fifth flow control unit 19 is arranged between the first mixing tank 4 and the second mixing tank 5; the fifth flow control unit 19 is a fifth electromagnetic valve 29 and a fifth mass flow controller 30 which are arranged in parallel;
the signal output ends of the first pressure gauge 11, the second pressure gauge 13, the third pressure gauge 14 and the fourth pressure gauge 17 are respectively connected with a first signal input end, a second signal input end, a third signal input end and a fourth signal input end of the data processing unit 6, the first signal output end of the data processing unit 6 is connected with the signal input end of the control terminal 7, and the second signal output end, the third signal output end, the fourth signal output end and the fifth signal output end of the control terminal 7 are respectively connected with the signal input ends of the first flow control unit 12, the second flow control unit 15, the third flow control unit 16 and the fifth flow control unit 19.
The gas source connected to the first gas source inlet 1 is hydrogen, the gas source connected to the second gas source inlet 2 is nitrogen (as background gas to dilute the other two gases), and the gas source connected to the third gas source inlet 3 is oxygen.
The hydrogen, the first gas source inlet 1, the first flow control unit 12, the nitrogen, the second gas source inlet 2, the second flow control unit 15, the first mixer and the first gas outlet 8 form a primary dilution pipeline for the hydrogen.
The oxygen, the third gas source inlet 3, the fourth flow control unit 18, the nitrogen, the second gas source inlet 2, the second flow control unit 15, the first mixer and the first gas outlet 8 form a primary dilution pipeline for the oxygen.
The hydrogen, the first gas source inlet 1, the first flow control unit 12, the nitrogen, the second gas source inlet 2, the second flow control unit 15, the first mixer, the fifth flow control unit 19 and the second mixer form a pipeline for secondary dilution of the hydrogen.
The oxygen, the third gas source inlet 3, the fourth flow control unit 18, the nitrogen, the second gas source inlet 2, the second flow control unit 15, the first mixer, the fifth flow control unit 19 and the second mixer form a pipeline for secondary dilution of the oxygen.
The types and selections of the data processing unit, the electromagnetic valve, the pressure gauge and the like are known technical means in the field, and are not described herein.
The working principle is as follows: when the dilution multiple of the hydrogen is 100 times, the hydrogen is directly diluted through a primary dilution pipeline of the hydrogen. During dilution, hydrogen and nitrogen are respectively introduced through the first gas source inlet 1 and the second gas source inlet 2, the flow rates of the hydrogen and the nitrogen are respectively controlled through the first mass flow controller 24 and the second mass flow controller 26, and the hydrogen and the nitrogen enter the first mixing tank 4 to be mixed to obtain mixed gas with required concentration and then are discharged through the first gas outlet 8.
When the dilution multiple of hydrogen is 10000 times, because the reduction multiple is larger, the required mixed gas can not be obtained through the first-stage dilution, and therefore the hydrogen is diluted through a second-stage dilution pipeline. During dilution, hydrogen and nitrogen are respectively introduced through the first gas source inlet 1 and the second gas source inlet 2, the flow rates of the hydrogen and the nitrogen are respectively controlled through the first mass flow controller 24 and the second mass flow controller 26, and the hydrogen and the nitrogen enter the first mixing tank 4 to be mixed to obtain mixed gas diluted by 100 times. And then introducing the mixed gas diluted by 100 times into a second mixer, introducing nitrogen into the second mixer through a third flow control unit 16, mixing the mixer diluted by 100 times with the nitrogen to obtain the mixed gas diluted by 10000 times, and discharging the mixed gas from the gas outlet end of the second mixer after mixing.
The primary dilution and secondary dilution of oxygen are the same as the primary dilution and secondary dilution of hydrogen. Wherein, the second gas outlet 9 and the third gas outlet 10 which are connected with the second mixer respectively correspond to the hydrogen gas mixture and the oxygen gas mixture, thereby facilitating the identification and collection.
In the hydrogen dilution process, the fourth pressure gauge 17 transmits the pressure data of the first mixer acquired by the fourth pressure gauge to the data processing unit 6 in real time, the data processing unit 6 compares the preset pressure value with the pressure data, and if the pressure data is lower than the preset pressure value, the data processing unit 6 controls the first flow control unit 12 and the second flow control unit 15 to be opened, so that hydrogen and nitrogen can continuously supply gas to the first mixer. If the pressure data is higher than the preset pressure value, the data processing unit 6 controls the first flow control unit 12 and the second flow control unit 15 to close, so that the pressure in the first mixer gradually decreases to the preset value. When the data processing unit 6 controls the first flow control unit 12 and the second flow control unit 15, the pressure value signals are fed back to the control terminal 7 at the same time, the control terminal 7 displays the pressure values in real time according to the feedback of the data processing unit 6, and when the pressure data are higher than the preset pressure values, the control terminal 7 displays the pressure values in red; when the pressure data is lower than the preset pressure value, the control terminal 7 displays green. And the real-time data of the first pressure gauge 11, the second pressure gauge 13 and the third pressure gauge 14 are transmitted to the data processing unit 6 and are sent to the control terminal 7 by the data processing unit 6 for display, so that the staff can conveniently master the gas distribution rhythm.
During the secondary dilution, the data processing unit 6 also controls the opening and closing of a fifth electromagnetic valve 29 of the fifth flow control unit 19 through the concentration multiple set by the data processing unit, and when the set concentration multiple is less than 10000 times, the valve is opened; and when the multiple is more than 10000 times, the gate is closed.
The utility model discloses a distributing device distribution precision is high, and the demand that satisfies the high multiple dilution that can be fine collects the one-level and dilutes as an organic wholely with the second grade, has enlarged the application scope of device, and can automatic control dilute the pressure of process, guarantees that pressure is invariable, and intelligent degree is high.
Further, check valves 20 are respectively connected between the first flow control unit 12 and the first mixer, between the second flow control unit 15 and the first mixer, between the third flow control unit 16 and the first mixer, between the fourth flow control unit 18 and the first mixer, and between the fifth flow control unit 19 and the second mixer.
The check valve 20 is arranged to prevent the mixed gas in the first mixer and the second mixer from flowing back to pollute the gas source.
Furthermore, the first air source inlet 1, the second air source inlet 2 and the third air source inlet 3 are respectively provided with a filter 21. Filters 21 are disposed between the first gas inlet and the first gas source, between the second gas inlet and the second gas source, and between the third gas inlet and the third gas source, respectively.
The filter 21 can filter the air source, and guarantee the purity of the air and the effectiveness of dilution.
Further, the first flow control unit 12 and the second flow control unit 15 are connected in parallel with the auxiliary electromagnetic valve 22, respectively.
The parallelly connected auxiliary electromagnetic valve can be guaranteed to let in first blender with maximum flow, and then improves dilution efficiency.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (4)
1. The utility model provides a gaseous proportion gas distribution device based on multistage dilution which characterized in that: the device comprises a first air source inlet, a second air source inlet, a third air source inlet, a first mixing tank, a second mixing tank, a data processing unit and a control terminal;
the first gas source inlet is communicated with the first mixing tank, the first mixing tank is provided with two gas outlet ends, one gas outlet end of the first mixing tank is communicated with a first gas outlet, the other gas outlet end of the first mixing tank is communicated with the second mixing tank, and a first pressure gauge and a first flow control unit for controlling the gas flow are arranged between the first gas source inlet and the first mixing tank; the first mixing tank is connected with a second pressure gauge;
the second gas source inlet is respectively communicated with the first mixing tank and the second mixing tank; a third pressure gauge and a second flow control unit are arranged between the second gas source inlet and the first mixing tank, and a third flow control unit is arranged between the second gas source inlet and the second mixing tank;
the third gas source inlet is communicated with the first mixing tank; a fourth pressure gauge and a fourth flow control unit are arranged between the third gas source inlet and the first mixing tank;
a fifth flow control unit is arranged between the first mixing tank and the second mixing tank;
the signal output ends of the first pressure gauge, the second pressure gauge, the third pressure gauge and the fourth pressure gauge are respectively connected with a first signal input end, a second signal input end, a third signal input end and a fourth signal input end of the data processing unit, the first signal output end of the data processing unit is connected with the signal input end of the control terminal, and the second signal output end, the third signal output end, the fourth signal output end and the fifth signal output end of the control terminal are respectively connected with the signal input ends of the first flow control unit, the second flow control unit, the third flow control unit and the fifth flow control unit.
2. The multi-stage dilution based gas proportioning gas distribution device of claim 1, wherein: and one-way valves are respectively connected between the first flow control unit and the first mixer, between the second flow control unit and the first mixer, between the third flow control unit and the first mixer, between the fourth flow control unit and the first mixer and between the fifth flow control unit and the second mixer.
3. The multi-stage dilution based gas proportioning gas distribution device of claim 1, wherein: and the first air source inlet, the second air source inlet and the third air source inlet are respectively provided with a filter.
4. The multi-stage dilution based gas proportioning gas distribution device of claim 1, wherein: and the first flow control unit and the second flow control unit are respectively connected with an auxiliary electromagnetic valve in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020864208.9U CN212236773U (en) | 2020-05-21 | 2020-05-21 | Gas proportion distribution device based on multistage dilution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020864208.9U CN212236773U (en) | 2020-05-21 | 2020-05-21 | Gas proportion distribution device based on multistage dilution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816601A (en) * | 2020-12-31 | 2021-05-18 | 杭州谱育科技发展有限公司 | Gas dilution device and method based on selection technology |
| CN114326841A (en) * | 2021-12-20 | 2022-04-12 | 杭州谱育科技发展有限公司 | Device and method for controlling water vapor concentration |
-
2020
- 2020-05-21 CN CN202020864208.9U patent/CN212236773U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816601A (en) * | 2020-12-31 | 2021-05-18 | 杭州谱育科技发展有限公司 | Gas dilution device and method based on selection technology |
| CN114326841A (en) * | 2021-12-20 | 2022-04-12 | 杭州谱育科技发展有限公司 | Device and method for controlling water vapor concentration |
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