CN216560433U - Gas sample injector matched with thermal desorption Centri99 for use - Google Patents
Gas sample injector matched with thermal desorption Centri99 for use Download PDFInfo
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- CN216560433U CN216560433U CN202123139064.4U CN202123139064U CN216560433U CN 216560433 U CN216560433 U CN 216560433U CN 202123139064 U CN202123139064 U CN 202123139064U CN 216560433 U CN216560433 U CN 216560433U
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- electromagnetic
- way valve
- interface
- gas
- centri99
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- 238000003795 desorption Methods 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 72
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 239000002912 waste gas Substances 0.000 claims abstract description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 239000007792 gaseous phase Substances 0.000 claims 1
- 239000012071 phase Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000012159 carrier gas Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 3
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 241000237074 Centris Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Abstract
The utility model relates to the field of monitoring of gaseous pollution, and discloses a gas sample injector matched with thermal desorption Centri99, which comprises a first analysis interface, a waste gas interface, a nitrogen interface, a second analysis interface, a gas-phase gas supply interface, a first connection interface, a second connection interface and an air bag gas inlet, wherein the first analysis interface is connected with a second electromagnetic three-way valve, the second electromagnetic three-way valve is connected with a suction pump, the suction pump is connected with the waste gas interface, the second electromagnetic three-way valve is connected with a pressure sensor, the pressure sensor is connected with the first connection interface, the first connection interface is connected with a quantitative ring, the second connection interface is connected with a second connection interface, the second connection interface is connected with a third electromagnetic three-way valve, the third electromagnetic three-way valve is connected with a first flow sensor, the gas sample injector matched with thermal desorption Centri99 combines the principle of a multifunctional thermal desorption Centri99, when the multifunctional thermal desorption Centri99 samples, the electromagnetic valve needs to be closed to ensure that gas in the quantitative ring can stably enter, without damaging the analytical instrument.
Description
Technical Field
The utility model relates to the field of monitoring of gaseous pollution, in particular to a gas sample injector used with thermal desorption Centri 99.
Background
In the existing environmental standards, the standard of an air bag method (gas direct injection analysis) is not much in monitoring and analysis of gaseous pollution, and because an analytical instrument (such as a gas chromatograph) has a requirement on the volume of gas to be injected (most of the gas injection volumes are 1ml), the problems of low sensitivity, large interference and the like exist in the direct injection analysis of a gas sample. The multifunctional thermal desorption system Centri99 is provided with a secondary cold trap, so that a gas sample can be focused and enriched, and the sensitivity, accuracy and precision of gas bag sampling analysis are greatly improved. But the multifunctional thermal desorption system Centri99 has no air bag injection mode. The air bag sample injector in the market has a single function, only has the function of taking gas from an air bag, and cannot be matched with a multifunctional thermal desorption system Centri99 for use, so that a gas sample injector matched with a thermal desorption Centri99 is provided.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the defects of the prior art, the utility model provides a gas sample injector used with thermal desorption Centri99, and solves the problems.
(II) technical scheme
In order to achieve the above purpose, the utility model provides the following technical scheme: a gas sample injector matched with thermal desorption Centri99 comprises a first analysis interface, a waste gas interface, a nitrogen interface, a second analysis interface, a gas-phase gas supply interface, a first connection port, a second connection port and an air bag gas inlet, wherein the first analysis interface is connected with a second electromagnetic three-way valve, the second electromagnetic three-way valve is connected with a suction pump, the suction pump is connected with the waste gas interface, the second electromagnetic three-way valve is connected with a pressure sensor, the pressure sensor is connected with the first connection port, the first connection port is connected with a quantitative ring, the second connection port is connected with a third electromagnetic three-way valve, the third electromagnetic three-way valve is connected with a first flow sensor, the first flow sensor is connected with a first flow controller, the first flow controller is connected with the air bag gas inlet, the third electromagnetic three-way valve is connected with a second flow sensor, the second flow sensor is connected with a second flow controller, the second flow controller is connected with a first electromagnetic three-way valve, and the first electromagnetic three-way valve is connected with a first electromagnetic three-way valve, the electromagnetic three-way valve is connected with an electromagnetic valve, the analytic interface II is connected between the electromagnetic three-way valve and the electromagnetic valve, and the electromagnetic valve is connected with a gas phase gas supply interface.
Preferably, the first electromagnetic three-way valve, the third electromagnetic three-way valve and the pressure sensor are provided with A, B and C three connection ports.
Preferably, the second connection port is connected to the a connection port of the third electromagnetic three-way valve, the C connection port of the third electromagnetic three-way valve is connected to the first flow sensor, and the B connection port of the third electromagnetic three-way valve is connected to the second flow sensor.
Preferably, the first analysis interface is connected with a connection port A of the second electromagnetic three-way valve, a connection port C of the second electromagnetic three-way valve is connected with the pressure sensor, and a connection port B of the second electromagnetic three-way valve is connected with the air pump.
Preferably, the second flow controller is connected to a C connection port of the first electromagnetic three-way valve, a connection port a of the first electromagnetic three-way valve is connected to the nitrogen connection port, and a connection port B of the first electromagnetic three-way valve is connected to the electromagnetic valve.
(III) advantageous effects
Compared with the prior art, the utility model provides the gas sample injector matched with the thermal desorption Centri99, which has the following beneficial effects:
1. according to the gas sample injector matched with the thermal desorption Centri99 and the principle of the multifunctional thermal desorption system Centri99, when the sample injector only adopts the multifunctional thermal desorption system Centri99, the electromagnetic valve 2 needs to be closed so as to ensure that gas in the quantitative ring can stably enter, and meanwhile, an analysis instrument is not damaged.
2. This gas sample injector that collocation thermal desorption Centri99 used, through pressure sensor feedback value, when controlling the flow controller and making the appearance of a sample, system pressure remains stable.
3. This gas injector that collocation thermal desorption Centri99 used, the sample mode of bulky appearance can make the quantitative intra-annular fill with the interior sample gas of gas bag, and the volume is accurate. Meanwhile, the exhaust emission is reduced, and experimenters are protected.
4. The gas sample injector used with the thermal desorption Centri99 is designed to be used for processing when the carrier gas used by the analyzer is inconsistent with the carrier gas used by the analyzer.
5. The gas sample injector matched with the thermal desorption Centri99 can be matched with a multifunctional thermal desorption system Centri99 to realize higher sensitivity, accuracy and precision. Has multiple modes to select, can make standard series concentration standard gas, and has low cost.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. analyzing an interface I; 2. an exhaust gas interface; 3. a nitrogen interface; 4. analyzing an interface II; 5. a gas phase gas supply interface; 6. a first connecting port; 7. a second connecting port; 8. an air bag inlet; 9. a first electromagnetic three-way valve; 10. a second electromagnetic three-way valve; 11. a third electromagnetic three-way valve; 12. an air pump; 13. an electromagnetic valve; 14. a pressure sensor; 15. a first flow sensor; 16. A first flow controller; 17. a flow sensor II; 18. a second flow controller; 19. and (4) a quantitative ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the gas analyzer includes a first analysis interface 1, a waste gas interface 2, a nitrogen interface 3, a second analysis interface 4, a gas phase gas supply interface 5, a first connection port 6, a second connection port 7, and a gas bag gas inlet 8, wherein the first analysis interface 1 is connected with a second electromagnetic three-way valve 10, the second electromagnetic three-way valve 10 is connected with a gas pump 12, the gas pump 12 is connected with the waste gas interface 2, the second electromagnetic three-way valve 10 is connected with a pressure sensor 14, the pressure sensor 14 is connected with the first connection port 6, the first connection port 6 is connected with a quantitative ring 19, the quantitative ring 19 is connected with the second connection port 7, the second connection port 7 is connected with a third electromagnetic three-way valve 11, the third electromagnetic three-way valve 11 is connected with a first flow sensor 15, the first flow sensor 15 is connected with a first flow controller 16, the first flow controller 16 is connected with the gas bag gas inlet 8, the third electromagnetic three-way valve 11 is connected with a second flow sensor 17, and the second flow sensor 17 is connected with a second flow controller 18, the second flow controller 18 is connected with the first electromagnetic three-way valve 9, the first electromagnetic three-way valve 9 is connected with the electromagnetic valve 13, the second analysis interface 4 is connected between the first electromagnetic three-way valve 9 and the electromagnetic valve 13, and the electromagnetic valve 13 is connected with the gas phase gas supply interface 5.
Further, the three-way solenoid valve 9, the three-way solenoid valve 11, and the pressure sensor 14 are provided with A, B and three C connection ports.
Furthermore, the second connection port 7 is connected to the a connection port of the third electromagnetic three-way valve 11, the C connection port of the third electromagnetic three-way valve 11 is connected to the first flow sensor 15, and the B connection port of the third electromagnetic three-way valve 11 is connected to the second flow sensor 17.
Furthermore, the analysis port one 1 is connected to a port a of the two electromagnetic three-way valve 10, a port C of the two electromagnetic three-way valve 10 is connected to the pressure sensor 14, and a port B of the two electromagnetic three-way valve 10 is connected to the air pump 12.
Furthermore, the second flow controller 18 is connected with a C connection port of the first electromagnetic three-way valve 9, a connection port a of the first electromagnetic three-way valve 9 is connected with the nitrogen connection port 3, and a connection port B of the first electromagnetic three-way valve 9 is connected with the electromagnetic valve 13.
The working principle is as follows: the analysis gas of the multifunctional thermal desorption system is accessed from the sample inlet of the analysis equipment through the gas phase gas supply interface 5 and enters the multifunctional thermal desorption system from the second analysis interface 4 through the electromagnetic valve 13.
Dynamic dilution mode: for making a standard series of concentrations of a standard gas. The standard gas is connected to the gas bag inlet 8, the gas bag is connected to the gas bag inlet, the flow of the standard gas is adjusted by controlling the first flow controller 16, and the flow of the diluent gas (nitrogen gas) is adjusted by controlling the second flow controller 18, so that the purpose of dilution is achieved.
Quantitative sample introduction mode: the air bag is connected to an air inlet 8 of the air bag, an A, C port of the three electromagnetic three-way valve 11 is opened, a B port is closed, a B, C port of the two electromagnetic three-way valve 10 is opened, and an A port is closed; the air pump 12 is opened, after a certain time of pumping, the air in the air bag is ensured to fill the quantitative ring 19, at the moment, the A, C port of the first electromagnetic three-way valve 9 is opened, the B port is closed, the A, B port of the third electromagnetic three-way valve 11 is opened, and the C port is closed; and an A, C port of the second electromagnetic three-way valve 10 is opened, a B port is closed, the first electromagnetic three-way valve 9 is closed, and the second electromagnetic three-way valve 10 is closed. The first flow controller 16 controls the carrier gas (nitrogen), at this time, the carrier gas and the gas in the quantitative ring 19 are discharged from the first analysis interface 1 and enter the multifunctional thermal desorption system, the first flow controller 16 controls the flow according to the value of the pressure sensor 14, the pressure is controlled at a certain value, and the sample injection time is calculated according to the volume and the value of the first flow controller 16. The quantitative ring can be replaced according to the condition of the sample.
Large volume sample introduction mode: the third electromagnetic three-way valve 11 is closed, the B, C port of the second electromagnetic three-way valve 10 is opened, and the A port is closed; the suction pump 12 is turned on; when the pressure sensor 14 shows that the vacuum in the quantitative ring 19 is close, the second electromagnetic three-way valve 10 is closed, A, C of the third electromagnetic three-way valve 11 is opened, and B is closed; the suction pump 12 is turned off; at this time, because of the vacuum negative pressure in the quantitative ring 19, the gas in the gas bag enters the quantitative ring 19, and the pressure sensor 14 displays the normal pressure; opening A, B of the electromagnetic three-way valve III 11, and closing the opening C; opening A, C of the second electromagnetic three-way valve 10, and closing the opening B; closing the electromagnetic three-way valve I9; and closing the second electromagnetic three-way valve 10. The first flow controller 16 controls the carrier gas (nitrogen), at this time, the carrier gas and the gas in the quantitative ring 19 exit from the first analysis interface 1 and enter the multifunctional thermal desorption system, the first flow controller 16 controls the flow according to the value of the pressure sensor 14, the pressure is controlled at a certain value, and the sample injection time is calculated according to the volume and the value of the pressure sensor 14.
Direct analysis mode: in the direct analysis mode, the quantitative ring 19 can only be one milliliter, the analysis interface I1 is connected with the sample inlet of the analysis instrument, if the analysis instrument uses carrier gas and the gas connected with the nitrogen interface 3 is inconsistent, the B, C port of the electromagnetic three-way valve I9 is opened, the A port is closed, and the gas at the gas phase gas supply interface 5 from the sample inlet of the analysis instrument is used. Other logics are the same as the quantitative sample injection mode. The mode is not required to be matched with a multifunctional thermal desorption system and is used independently.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a collocation thermal desorption Centri99 uses gas injector, includes analytic interface one (1), waste gas interface (2), nitrogen gas interface (3), analytic interface two (4), gaseous phase air feed interface (5), connector one (6), connector two (7) and air pocket air inlet (8), its characterized in that: the analysis interface I (1) is connected with a second electromagnetic three-way valve (10), the second electromagnetic three-way valve (10) is connected with an air pump (12), the air pump (12) is connected with a waste gas interface (2), the second electromagnetic three-way valve (10) is connected with a pressure sensor (14), the pressure sensor (14) is connected with a first connecting port (6), the first connecting port (6) is connected with a quantitative ring (19), the quantitative ring (19) is connected with a second connecting port (7), the second connecting port (7) is connected with a third electromagnetic three-way valve (11), the third electromagnetic three-way valve (11) is connected with a first flow sensor (15), the first flow sensor (15) is connected with a first flow controller (16), the first flow controller (16) is connected with an air bag air inlet (8), the third electromagnetic three-way valve (11) is connected with a second flow sensor (17), the second flow sensor (17) is connected with a second flow controller (18), and the second flow controller (18) is connected with a first electromagnetic three-way valve (9), the first electromagnetic three-way valve (9) is connected with the first electromagnetic three-way valve (9), the first electromagnetic three-way valve (9) is connected with the electromagnetic valve (13), the second analysis interface (4) is connected between the first electromagnetic three-way valve (9) and the electromagnetic valve (13), and the electromagnetic valve (13) is connected with the gas phase gas supply interface (5).
2. The gas injector of claim 1, used with thermal desorption Centri99, wherein: the first electromagnetic three-way valve (9), the third electromagnetic three-way valve (11) and the pressure sensor (14) are all provided with A, B and three C connecting ports.
3. The gas injector of claim 1, used with thermal desorption Centri99, wherein: and the second connecting port (7) is connected with the A connecting port of the third electromagnetic three-way valve (11), the C connecting port of the third electromagnetic three-way valve (11) is connected with the first flow sensor (15), and the B connecting port of the third electromagnetic three-way valve (11) is connected with the second flow sensor (17).
4. The gas injector of claim 1, used with thermal desorption Centri99, wherein: the analysis interface I (1) is connected with a connector A of the electromagnetic three-way valve II (10), a connector C of the electromagnetic three-way valve II (10) is connected with the pressure sensor (14), and a connector B of the electromagnetic three-way valve II (10) is connected with the air suction pump (12).
5. The gas injector of claim 1, used with thermal desorption Centri99, wherein: and the second flow controller (18) is connected with a C connecting port of the first electromagnetic three-way valve (9), an A connecting port of the first electromagnetic three-way valve (9) is connected with the nitrogen interface (3), and a B connecting port of the first electromagnetic three-way valve (9) is connected with the electromagnetic valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123139064.4U CN216560433U (en) | 2021-12-14 | 2021-12-14 | Gas sample injector matched with thermal desorption Centri99 for use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123139064.4U CN216560433U (en) | 2021-12-14 | 2021-12-14 | Gas sample injector matched with thermal desorption Centri99 for use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216560433U true CN216560433U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123139064.4U Active CN216560433U (en) | 2021-12-14 | 2021-12-14 | Gas sample injector matched with thermal desorption Centri99 for use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216560433U (en) |
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2021
- 2021-12-14 CN CN202123139064.4U patent/CN216560433U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240226 Address after: No. 199, Zhanqian Road, Xinqiao street, Ouhai District, Wenzhou, Zhejiang 325006 Patentee after: Zhejiang Huakun Geological Development Co.,Ltd. Country or region after: China Address before: 325006 Room 302, building 1, group 7, Xinqiao street, Ouhai District, Wenzhou City, Zhejiang Province Patentee before: Zhou Guobang Country or region before: China |
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| TR01 | Transfer of patent right |