CN109632403B - Gas collection device - Google Patents
Gas collection device Download PDFInfo
- Publication number
- CN109632403B CN109632403B CN201811487597.1A CN201811487597A CN109632403B CN 109632403 B CN109632403 B CN 109632403B CN 201811487597 A CN201811487597 A CN 201811487597A CN 109632403 B CN109632403 B CN 109632403B
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- valve
- cavity
- sealing ring
- valve core
- sealing
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- 238000007789 sealing Methods 0.000 claims abstract description 88
- 238000005070 sampling Methods 0.000 claims description 45
- 238000004891 communication Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 44
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a gas collection device which comprises a connection valve seat, a valve body, a cylinder barrel and end covers, wherein the valve seat and the cylinder barrel are respectively connected to two ends of the valve body, the end covers are connected with the cylinder barrel, a valve cavity is arranged in the valve body, a collection pipe is arranged on the connection valve seat and is communicated with the valve cavity, a collection cavity is arranged in the cylinder barrel, a sealing disc is arranged in the collection cavity, through holes are formed in two sides of a central axis of the sealing disc, the collection cavity is communicated with the valve cavity, a valve core is arranged in the valve cavity and can move in the valve cavity, a channel is arranged in the valve core, two ends of the valve core are communicated by the channel, an elastic piece is further arranged on the valve core, the elastic piece can push the valve core to move to be in contact with the sealing disc, and one end of the channel can be sealed by the sealing disc. When the invention is used for collecting gas, other component gases can be effectively discharged, and the concentration of the collected gas is improved.
Description
Technical Field
The invention relates to the field of industrial gas collection, in particular to a gas collection device.
Background
In the field of chemical industry or gas combustion, specific gases need to be collected so as to be analyzed, and therefore, the collection of true and effective gases is a key to performing effective analysis: during the collection and extraction, no other gas components have to be mixed into the process. Currently, most gas collection devices are prone to mixing with other gas components during the process of collecting the gas, which makes the purity of the collected gas low.
Disclosure of Invention
The invention aims to provide a gas collection device which can prevent gas of gas impurities from being mixed in and improve the collection purity of the gas.
The invention is realized by the following technical scheme:
the utility model provides a gas collection device, includes connection disk seat, valve body, cylinder and end cover, the both ends at the valve body are connected respectively with the cylinder to the disk seat, and the end cover is connected with the cylinder, be equipped with the valve pocket in the valve body, be equipped with the collection pipe on the connection disk seat to collection pipe and valve pocket intercommunication, be equipped with the collection chamber in the cylinder, be equipped with the sealing disk in the collection chamber, the axis both sides of sealing disk all are equipped with the through-hole, and the through-hole will gather chamber and valve pocket intercommunication are equipped with the case in the valve pocket, and the case can remove in the valve pocket, be equipped with the passageway in the case, the passageway communicates the both ends of case, still be equipped with the elastic component on the case, the elastic component can promote the case to remove to with the sealing disk contact to the sealing disk can be sealed to passageway one end.
Further, a bulge is arranged on the outer wall of the valve core, the bulge divides the valve cavity into a left cavity and a right cavity, the elastic piece is sleeved on the valve core, and the elastic piece is positioned in the left cavity.
Further, a first sealing ring is further arranged between the bulge and the inner wall of the valve cavity, the first sealing ring is sleeved on the bulge, a second sealing ring is further arranged between the valve core and the inner wall of the valve cavity, the second sealing ring is sleeved on the valve core, and the second sealing ring is positioned in the right cavity.
Further, a driving interface is further arranged on the outer wall of the valve body and communicated with the right cavity of the valve cavity.
Further, a vacuum interface is further arranged on the outer wall of the valve body, and the vacuum interface is communicated with the left cavity of the valve cavity.
Further, a sampling interface is further arranged on the outer wall of the valve body, and the sampling interface is communicated with the collection cavity.
Further, the sampling cavity is internally provided with a sampling piston, the end cover is further provided with a movable rod, the movable rod is inserted into the sampling cavity and is connected with the sampling piston, and the movable rod can push the sampling piston to move towards the sealing disc.
Further, a fixed ring is further arranged on the movable rod, the fixed ring is connected with the movable rod through threads, and the fixed ring is positioned on the outer side of the end cover.
Further, a third sealing ring matched with the valve core is further arranged on the side wall, facing the valve core, of the sealing disc, a connecting piece is arranged on the third sealing ring, the third sealing ring is connected with the sealing disc through threads, and when the valve core is in contact with the third sealing ring, the third sealing ring can seal the channel.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. when the gas is collected, the movable rod is used for pushing the sampling piston to move, impurity gas in the collection cavity is discharged through the sampling interface, then the valve cavity in the valve body is vacuumized through the vacuum interface, hydraulic oil is conveyed towards the valve cavity through the driving interface, the valve core is pushed to move towards the direction of the collection pipe, and finally a channel of the valve core is communicated with the collection pipe, so that the gas to be collected sequentially passes through the collection pipe, the valve core channel and the sealing disc through hole and enters the collection cavity, collection of the gas is completed, gas mixed with gas impurities can be effectively avoided in the whole collection process, and the purity of the collected gas is ensured;
2. according to the gas collection device, after the gas is collected, the elastic force generated by the elastic piece pushes the valve core to move towards the direction of the sealing disc, and finally the end face of the valve core is in contact with the third sealing ring on the sealing disc, so that a channel in the valve core is sealed, and collected gas is sealed in the collection cavity.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of the portion A of the present invention;
FIG. 3 is a schematic view of the valve core of the present invention;
fig. 4 is a schematic structural view of the sealing disk of the present invention.
In the drawings, the reference numerals and corresponding part names:
the device comprises a 1-collecting tube, a 2-connecting valve seat, a 3-valve cavity, a 4-channel, a 5-valve body, a 6-sampling interface, a 7-collecting cavity, an 8-sampling piston, a 9-end cover, a 10-movable rod, a 11-vacuum interface, a 12-elastic piece, a 13-driving interface, a 14-valve core, a 15-cylinder barrel, a 16-fixed ring, a 17-third sealing ring, a 18-connecting piece, a 19-through hole, a 20-sealing disc, a 21-bulge, a 22-first sealing ring and a 23-second sealing ring.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Examples
As shown in fig. 1 to 3, the gas collecting device comprises a connecting valve seat 2, a valve body 5, a cylinder 15 and an end cover 9, wherein the connecting valve seat 2 and the cylinder 15 are respectively connected at two ends of the valve body 5, one end of the cylinder 15 is connected with the valve body 5, the other end is connected with the cylinder cover 9, the connecting valve seat 2 is connected with the valve body 5 through a screw, a collecting pipe 1 is arranged on the connecting valve seat 2 and is used for collecting gas of a system, a valve cavity 3 is arranged in the valve body 5, the collecting pipe 1 is communicated with the valve cavity 3, a collecting cavity 7 is arranged in the cylinder 15 and is used for storing collected gas, a sealing disc 20 is arranged in the collecting cavity 7 and seals the valve cavity 3, through holes 19 are respectively arranged at two sides of a central axis of the sealing disc 20, the through holes 19 are used for communicating the collecting cavity 7 with the valve cavity 3, the gas can enter the collecting cavity 7 through the through hole 19, a sampling piston 8 matched with the collecting cavity 7 is further arranged in the collecting cavity 7, the sampling piston 8 is positioned on the inner side of the sealing disc 20, the sampling piston 8 can move in the collecting cavity 7, a movable rod 10 is arranged on the end cover 9, the movable rod 10 is horizontally inserted into the collecting cavity 7, the movable rod 10 is connected with the sampling piston 8, the movable rod 10 can push the sampling piston 8 to move in the collecting cavity 7 towards the direction of the sealing disc 20, a fixed ring 16 is further arranged on the movable rod 10, the fixed ring 16 is connected with the movable rod 10 through threads, the fixed ring 16 is positioned on the outer side of the end cover 9, the movable rod 10 can be limited to move towards the direction of the sealing disc 20, and therefore the sampling piston 8 can be fixed in the collecting cavity 7; the outer wall of the valve body 2 is also provided with a sampling interface 6, the sampling interface 6 is communicated with the collection cavity 7, the communication part of the sampling interface 6 and the collection cavity 7 is positioned at the outer side of the sealing disc 20, the sampling interface 6 is provided with a valve which is used for controlling the opening and closing of the sampling interface, when the valve is opened, the movable rod 10 pushes the sampling piston 8 to move towards the sealing disc 20, and the sampling piston 8 can discharge air in the collection cavity 7 through the sampling interface 6; the valve cavity 3 is internally provided with a valve core 14, the valve core 14 can move in the valve cavity 3, one end of the valve core 14 can move to be in contact with the sealing disc 10, the valve core 14 is internally provided with a channel 4, the channel 4 communicates the two ends of the valve core 14, when the valve core 14 moves towards the direction of the collecting pipe 1 in the valve cavity 3, the channel 4 of the valve core 14 can communicate with the collecting pipe 1, so that gas can enter the channel 4 through the collecting pipe 1, the side wall of the sealing disc 10 towards the direction of the valve core 14 is also provided with a third sealing ring 17 matched with the valve core 14, the third sealing ring 17 is positioned at the center of the sealing disc 20, the third sealing ring 17 is provided with a connecting piece 18, the connecting piece 18 connects the third sealing ring 17 with the sealing disc 20 through threads, when the valve core 14 moves towards the direction of the sealing disc 20, one end of the valve core 14 can be in contact with the third sealing ring 17 on the sealing disc 20, the channel 4 of the valve core 14 can be sealed by utilizing the third sealing ring 17, the outer wall of the valve core 14 is also provided with a bulge 21 with a disc structure, the bulge 21 divides the valve cavity 3 into a left cavity and a right cavity, the valve cavity 3 is also internally provided with an elastic piece 12, the elastic piece 12 is a spring, the elastic piece 12 is positioned in the left cavity of the valve cavity 3, the elastic piece 12 is sleeved on the valve core 14, when the valve core 14 moves towards the direction of the collecting pipe 1, under the action of the bulge 21, the valve core 14 compresses the elastic piece 12, a first sealing ring 22 is further arranged between the bulge 21 and the inner wall of the valve cavity 3, the first sealing ring 22 is an O-shaped sealing ring, the first sealing ring 22 is sleeved on the bulge 21, the arranged first sealing ring 22 can ensure the air tightness between the left cavity and the right cavity of the valve cavity 3, a second sealing ring 23 is also arranged between the valve core 14 and the inner wall of the valve cavity 3, the second sealing ring 23 is an O-shaped sealing ring, the second sealing ring 23 is sleeved in the valve core 14, the second sealing ring 23 is positioned in the right cavity, and the second sealing ring 23 can ensure the tightness between the right cavity of the valve core 3 and the collecting cavity 7; the valve body 5 is provided with a vacuum interface 11 on the outer wall, the vacuum interface 11 is communicated with the left cavity of the valve cavity 3, the vacuum interface 11 can be connected with an external vacuum pump, the vacuum in the valve cavity 3 can be pumped through the vacuum interface 11 under the action of the vacuum pump, the vacuum interface 11 is also provided with a valve which is a commercially available gas valve and is used for controlling the opening and closing of the vacuum interface 11; the valve body 5 is further provided with a driving interface 13, the driving interface 13 is communicated with the right cavity of the valve cavity 3, the driving interface 13 is located between the first sealing ring 22 and the second sealing ring 23, external hydraulic oil can enter the right cavity of the valve cavity 3 through the driving interface 13, the hydraulic oil acts on the protrusions 21, so that the valve core 14 is pushed to compress the elastic piece 12, the valve core 14 moves towards the direction of the collecting tube 1, the channel 4 of the valve core 14 is finally communicated with the collecting tube 1, and the driving interface 13 is further provided with a valve which is used for controlling the opening and closing of the driving interface 13 in the prior art.
When the invention is used, the sampling tube 1 is connected with a gas system to be sampled, a valve on the sampling interface 6 is opened, the sampling piston 8 is pushed by the movable rod 10 to move towards the sealing disc 20, air in the sampling cavity 7 is discharged through the sampling interface 6, then the valve on the sampling interface 6 is closed, the sampling piston 8 is moved to the end cover 9 by the piston rod 10, the fixed ring 16 is screwed, the sampling piston 8 is fixed in the sampling cavity 7, then the valve on the vacuum interface 11 is opened, the valve cavity 3 of the valve body 5 is vacuumized by the vacuum pump, air remained in the valve cavity 3 is released, when the system needs to start collecting gas, the valve on the driving interface 13 is opened, hydraulic oil is introduced towards the right cavity of the valve core 3 by the driving interface 13, the hydraulic oil acts on the bulge 21 to compress the elastic piece 12, the valve core 14 is forced to move towards the direction of the sampling tube 1, and finally the channel 4 of the valve core 14 is communicated with the collecting tube 1, the section of the valve core 14 towards the sealing disc 20 is separated from the third sealing ring 17 on the sealing disc 20, so that the gas entering the channel 4 in the valve core 14 can enter the collecting cavity 7 through the through hole 19 on the sealing disc 20, the collected gas is stored in the collecting cavity 7, when the collection of the gas is completed, the valve on the driving interface 13 is opened, the valve core 14 is pushed to move towards the sealing disc 20 under the action of the elastic piece 12, the hydraulic oil in the valve cavity 3 is discharged through the driving interface 13, and the valve core 14 is finally attached to the third sealing ring 17 on the sealing disc 20 under the action of the elastic piece 12, the channel 4 of the valve core 14 is sealed by the third sealing ring 17, the valve cavity 3 and the collecting cavity 7 are in a sealed state, when the gas stored in the collecting cavity 7 needs to be sampled, the valve on the sampling interface 6 is opened, the sampling piston 8 is pushed to move by the movable rod 10, and the gas stored in the sampling cavity 7 is extruded out from the sampling interface 6, so that the sampling of the gas is completed.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The utility model provides a gas collection device, its characterized in that, including connecting disk seat (2), valve body (5), cylinder (15) and end cover (9), disk seat (2) are connected respectively at the both ends of valve body (5) with cylinder (15), and end cover (9) are connected with cylinder (15), be equipped with valve pocket (3) in valve body (5), be equipped with collection pipe (1) on connecting disk seat (2) to collection pipe (1) and valve pocket (3) intercommunication, be equipped with in cylinder (15) and gather chamber (7), be equipped with sealing disk (20) in gathering chamber (7), the axis both sides of sealing disk (20) all are equipped with through-hole (19), through-hole (19) are with gathering chamber (7) and valve pocket (3) intercommunication, are equipped with case (14) in valve pocket (3), and case (14) can be in valve pocket (3) interior be equipped with passageway (4), passageway (4) are with the both ends intercommunication of case (14), still be equipped with elastic component (12) on case (14), elastic component (12) can remove to sealing disk (20) and sealing disk (20) one end.
2. A gas collection device according to claim 1, characterized in that the outer wall of the valve core (14) is provided with a bulge (21), the bulge (21) divides the valve cavity (3) into a left cavity and a right cavity, the elastic element (12) is sleeved on the valve core (14), and the elastic element (12) is positioned in the left cavity.
3. A gas collection device according to claim 2, characterized in that a first sealing ring (22) is further arranged between the bulge (21) and the inner wall of the valve cavity (3), the first sealing ring (22) is sleeved on the bulge (21), a second sealing ring (23) is further arranged between the valve core (14) and the inner wall of the valve cavity (3), the second sealing ring (23) is sleeved on the valve core (14), and the second sealing ring (23) is positioned in the right cavity.
4. A gas collection device according to claim 2, characterized in that the outer wall of the valve body (5) is further provided with a driving interface (13), and the driving interface (13) is communicated with the right cavity of the valve cavity (3).
5. A gas collection device according to claim 2, characterized in that the outer wall of the valve body (5) is further provided with a vacuum port (11), and that the vacuum port (11) communicates with the left chamber of the valve chamber (3).
6. A gas collection device according to claim 1, wherein the outer wall of the valve body (5) is further provided with a sampling port (6), and the sampling port (6) is in communication with the collection chamber (7).
7. A gas collection device according to claim 1, wherein a sampling piston (8) is further arranged in the collection chamber (7), a movable rod (10) is further arranged on the end cover (9), the movable rod (10) is inserted into the collection chamber (7), the movable rod (10) is connected with the sampling piston (8), and the movable rod (10) can push the sampling piston (8) to move towards the sealing disc (20).
8. A gas collection device according to claim 7, wherein the movable rod (10) is further provided with a fixing ring (16), the fixing ring (16) is connected with the movable rod (10) through threads, and the fixing ring (16) is located at the outer side of the end cover (9).
9. A gas collection device according to claim 1, characterized in that the side wall of the sealing disc (20) facing the direction of the valve core (14) is further provided with a third sealing ring (17) matched with the valve core, the third sealing ring (17) is provided with a connecting piece (18), the connecting piece (18) connects the third sealing ring (17) with the sealing disc (20) through threads (18), and when the valve core (14) contacts with the third sealing ring (17), the third sealing ring (17) can seal the channel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487597.1A CN109632403B (en) | 2018-12-06 | 2018-12-06 | Gas collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487597.1A CN109632403B (en) | 2018-12-06 | 2018-12-06 | Gas collection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109632403A CN109632403A (en) | 2019-04-16 |
| CN109632403B true CN109632403B (en) | 2024-02-06 |
Family
ID=66071626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811487597.1A Active CN109632403B (en) | 2018-12-06 | 2018-12-06 | Gas collection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109632403B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2223785A (en) * | 1938-12-20 | 1940-12-03 | Shell Dev | Gas sampling system |
| GB1145509A (en) * | 1965-08-21 | 1969-03-19 | Brown Boveri Krupp Reaktor | A sampling device for taking gas samples |
| CN101587031A (en) * | 2009-07-01 | 2009-11-25 | 施宏 | A kind of sealing gas sampling implement device |
| CN203516753U (en) * | 2013-09-17 | 2014-04-02 | 洪海云 | Novel stop valve |
| CN104316367A (en) * | 2014-10-09 | 2015-01-28 | 西安近代化学研究所 | Gas collecting device |
| CN205027578U (en) * | 2015-09-30 | 2016-02-10 | 佛山市南华仪器股份有限公司 | Gas accuse two -position three way sampling valve |
| CN106958686A (en) * | 2017-05-16 | 2017-07-18 | 眉山中车制动科技股份有限公司 | A kind of gas control air bleeding valve |
| CN107061793A (en) * | 2017-05-15 | 2017-08-18 | 西安石油大学 | A kind of definite value depressurizes real time sample valve |
| CN206696045U (en) * | 2017-04-13 | 2017-12-01 | 中国石油天然气股份有限公司 | Gas taking device for simulation experiment |
| CN207018610U (en) * | 2017-06-26 | 2018-02-16 | 南通虹登机械设备有限公司 | A kind of piston type vacuum coaxial valve using vacuum as power gas source |
| CN107817131A (en) * | 2017-11-07 | 2018-03-20 | 防灾科技学院 | A kind of deep sea water and dissolved gas harvester and method |
| CN207923540U (en) * | 2018-03-28 | 2018-09-28 | 四川省华检技术检测服务有限公司 | A kind of novel environmental detection gas sampling device |
| CN209264383U (en) * | 2018-12-06 | 2019-08-16 | 成都华科阀门制造有限公司 | A kind of acquisition device based on industrial gasses |
-
2018
- 2018-12-06 CN CN201811487597.1A patent/CN109632403B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2223785A (en) * | 1938-12-20 | 1940-12-03 | Shell Dev | Gas sampling system |
| GB1145509A (en) * | 1965-08-21 | 1969-03-19 | Brown Boveri Krupp Reaktor | A sampling device for taking gas samples |
| CN101587031A (en) * | 2009-07-01 | 2009-11-25 | 施宏 | A kind of sealing gas sampling implement device |
| CN203516753U (en) * | 2013-09-17 | 2014-04-02 | 洪海云 | Novel stop valve |
| CN104316367A (en) * | 2014-10-09 | 2015-01-28 | 西安近代化学研究所 | Gas collecting device |
| CN205027578U (en) * | 2015-09-30 | 2016-02-10 | 佛山市南华仪器股份有限公司 | Gas accuse two -position three way sampling valve |
| CN206696045U (en) * | 2017-04-13 | 2017-12-01 | 中国石油天然气股份有限公司 | Gas taking device for simulation experiment |
| CN107061793A (en) * | 2017-05-15 | 2017-08-18 | 西安石油大学 | A kind of definite value depressurizes real time sample valve |
| CN106958686A (en) * | 2017-05-16 | 2017-07-18 | 眉山中车制动科技股份有限公司 | A kind of gas control air bleeding valve |
| CN207018610U (en) * | 2017-06-26 | 2018-02-16 | 南通虹登机械设备有限公司 | A kind of piston type vacuum coaxial valve using vacuum as power gas source |
| CN107817131A (en) * | 2017-11-07 | 2018-03-20 | 防灾科技学院 | A kind of deep sea water and dissolved gas harvester and method |
| CN207923540U (en) * | 2018-03-28 | 2018-09-28 | 四川省华检技术检测服务有限公司 | A kind of novel environmental detection gas sampling device |
| CN209264383U (en) * | 2018-12-06 | 2019-08-16 | 成都华科阀门制造有限公司 | A kind of acquisition device based on industrial gasses |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109632403A (en) | 2019-04-16 |
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