CN204214695U - The sampling system of harvester motor-car exhaust particulate thing - Google Patents
The sampling system of harvester motor-car exhaust particulate thing Download PDFInfo
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- CN204214695U CN204214695U CN201420689266.7U CN201420689266U CN204214695U CN 204214695 U CN204214695 U CN 204214695U CN 201420689266 U CN201420689266 U CN 201420689266U CN 204214695 U CN204214695 U CN 204214695U
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- sampling pipe
- draft tube
- sampling
- vacuum pump
- mixing chamber
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Abstract
The utility model discloses a kind of sampling system of harvester motor-car exhaust particulate thing, comprise tail gas draft tube, mixing chamber, zero gas draft tube, threeway, the first sampling pipe, the second sampling pipe, first flow controller, Zero gas generator, the first vacuum pump and the second vacuum pump.The tail gas that motor vehicle is discharged by tail gas draft tube by the sampling system of harvester motor-car exhaust particulate thing of the present utility model introduces mixing chamber, and zero gas is passed into mixing chamber, tail gas is made fully to mix with described zero gas and to make VOCs condensation, enter the first sampling pipe more afterwards and the second sampling pipe gathers, visible the utility model can detect the new particle that VOCs generates further, and testing result is accurate.
Description
Technical field
The utility model relates to particle sampling system, particularly relates to a kind of sampling system of harvester motor-car exhaust particulate thing.
Background technology
The high-temperature tail gas discharged when motor vehicle is disposed in Atmospheric processes, part VOCs can form new particle by homogeneous phase or heterogeneous reaction, particle in direct collection high-temperature flue gas can make testing result less than normal, underestimates the granular material discharged of motor vehicle, makes testing result inaccurate.
Utility model content
The utility model object is to provide a kind of sampling system of harvester motor-car exhaust particulate thing, and its testing result is accurate, can accurately weigh the granular material discharged of motor vehicle.
The utility model technical solution problem adopts following technical scheme: a kind of sampling system of harvester motor-car exhaust particulate thing, comprises tail gas draft tube, mixing chamber, zero gas draft tube, threeway, the first sampling pipe, the second sampling pipe, first flow controller, Zero gas generator and the first vacuum pump;
Described mixing chamber is communicated with one end of tail gas draft tube with one end of described zero gas draft tube;
The other end of described zero gas draft tube is connected with described Zero gas generator by first flow controller;
Described mixing chamber is also communicated with the inlet end of described threeway, and two exhaust ends of described threeway are communicated with one end of the second sampling pipe respectively at one end of described first sampling pipe,
The other end of described first sampling pipe and the second sampling pipe is all connected to the first vacuum pump, and on described first sampling pipe, the flow direction along the gas in described first sampling pipe is provided with the first cutting head, the first film holder and second amount controller successively; On described second sampling pipe, the flow direction along the gas in described second sampling pipe is provided with the second cutting head, the second film holder and the 3rd flow controller successively.
Optionally, the sampling system of described harvester motor-car exhaust particulate thing also comprises the second vacuum pump, and the other end of described first sampling pipe connects described first vacuum pump, the other end second vacuum pump of described second sampling pipe.
Optionally, described first cutting head is PM
2.5cutting head.
Optionally, described second cutting head is PM
10cutting head.
The utility model has following beneficial effect: the tail gas that motor vehicle is discharged by tail gas draft tube by the sampling system of harvester motor-car exhaust particulate thing of the present utility model introduces mixing chamber, and zero gas is passed into mixing chamber, tail gas is made fully to mix with described zero gas and to make VOCs condensation, enter the first sampling pipe more afterwards and the second sampling pipe gathers, visible the utility model can detect the new particle that VOCs generates further, and testing result is accurate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the sampling system of harvester motor-car exhaust particulate thing of the present utility model;
Fig. 2 is another structural representation of the sampling system of harvester motor-car exhaust particulate thing of the present utility model;
In figure, mark is illustrated as: 1-tail gas draft tube; 2-mixing chamber; 3-zero gas draft tube; 4-threeway; 5-first sampling pipe; 6-second sampling pipe; 7-first flow controller; 8-first vacuum pump; 9-second vacuum pump; 10-first cutting head; The holder of 11-first film; 12-second amount controller; 13-second cutting head; The holder of 14-second film; 15-the 3rd flow controller; 16-Zero gas generator.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is further elaborated.
Embodiment 1
Present embodiments provide a kind of sampling system of harvester motor-car exhaust particulate thing, it comprises tail gas draft tube 1, mixing chamber 2, zero gas draft tube 3, threeway 4, first sampling pipe 5, second sampling pipe 6, first flow controller 7, first vacuum pump 8 and the second vacuum pump 9;
Described mixing chamber 2 is communicated with one end of tail gas draft tube 1 with one end of described zero gas draft tube 3; Fully mix by zero gas entered from described zero gas draft tube 3 with from the tail gas that described tail gas draft tube 1 enters in described mixing chamber 2; Described zero gas is the gas not containing composition to be measured or interfering material, and it can containing the composition irrelevant with composition to be measured.In the utility model, described zero gas is clean air.
The other end of described zero gas draft tube 3 is connected (connection) with described Zero gas generator 16 by first flow controller 7, described Zero gas generator 16 can select Beijing Mo Niteer Environmental Technology development corporation, Ltd. to produce, model is BML-9551 type Zero gas generator, and described first flow controller 7 is for controlling the flow velocity of the gas in described zero gas draft tube;
Described mixing chamber 2 is also communicated with the inlet end of described threeway 4, two exhaust ends of described threeway 4 are communicated with one end of the second sampling pipe 6 respectively at one end of described first sampling pipe 5, described first sampling pipe 5 and the other end of the second sampling pipe 6 are connected the first vacuum pump 8 and the second vacuum pump 9 respectively, a vacuum pump can certainly be adopted, now, the other end of described first sampling pipe 5 and the second sampling pipe 6 is all connected to described first vacuum pump, on described first sampling pipe 5, flow direction along the gas in described first sampling pipe 5 is provided with the first cutting head 10 successively, first film holder 11 and second amount controller 12, the cyclone type cutting head of the URG-2000-30EH series that described first cutting head 10 can adopt URG company of the U.S. to produce, its working flow is 16.7L/Min, described first cutting head 10 is connected in described pipeline, and the gas in described first sampling pipe 5 is by described first cutting head 10 by cyclonic separation, and particle required after cyclonic separation is discharged by main line, the film holder of the URG-2000-30FYT series that described first film holder 11 can adopt URG company to produce, the filter membrane lining that filter membrane is placed on described first film holder 11 is online, described first film holder 11 not only ensure that the impermeability of system, also can prevent filter membrane from breaking.Described filter membrane can be Teflon film, Whatman41 quantitative filter paper or quartz film; The particle that described Teflon film and Whatman41 quantitative filter paper gather is used for weighing, element and ion composition analysis etc., and the particle that described quartz film gathers is analyzed for particle OC/EC (organic carbon/elemental carbon) and the analysis of specific organism (as palycyclic aromatic PAHS).Described second amount controller 12 can control the flow velocity of the gas in described first sampling pipe 5.
On described second sampling pipe 6, flow direction along the gas in described second sampling pipe 6 is provided with the second cutting head 13, second film holder 14 and the 3rd flow controller 15 successively, the cyclone type cutting head of the URG-2000-30ENB series that described second cutting head 13 can adopt URG company of the U.S. to produce, its working flow is 16.7L/Min; Described second cutting head 13 is connected in described pipeline, and the gas in described second sampling pipe 6 is by described second cutting head 13 by cyclonic separation, and particle required after cyclonic separation is discharged by main line; The film holder of the URG-2000-30FYT series that described second film holder 14 can adopt URG company to produce, the filter membrane lining that filter membrane is placed on described second film holder 14 is online; Described second film holder 14 not only ensure that the impermeability of system, also can prevent filter membrane from breaking.Described filter membrane can be Teflon film, Whatman41 quantitative filter paper or quartz film; The particle that described Teflon film and Whatman41 quantitative filter paper gather is used for weighing, element and ion composition analysis etc., and the particle that described quartz film gathers is analyzed for particle OC/EC (organic carbon/elemental carbon) and the analysis of specific organism (as palycyclic aromatic PAHS).Described 3rd flow controller 15 can control the flow velocity of the gas in described second sampling pipe 6.
Described first flow controller 7, second amount controller 12 and the 3rd flow controller 15 all can adopt Italian Sai Ersesi to produce, and model is the flow controller of V10FD-L.
In the present embodiment, for preventing motor-vehicle tail-gas water vapor condensation in described mixing chamber, the sampling system of described harvester motor-car exhaust particulate thing also comprises heating arrangement (not shown), described heating arrangement is arranged around described mixing chamber, more preferably, described heating arrangement is heater strip, and described heater strip is wrapped on the outer wall of described mixing chamber.
The sampling system of harvester motor-car exhaust particulate thing of the present utility model in use, described tail gas draft tube 1 is inserted in the gas outlet of described motor vehicle, open described Zero gas generator 16, and under the control of first flow controller 7, in unit interval, (such as per minute) is Q1 (unit is L) by the flow of the gas of described zero gas draft tube 3, described first vacuum pump 8 and the second vacuum pump 9 work, extracting gases in described mixing chamber 2, and under the control of described second amount controller 12 and the 3rd flow controller 15, the gas volume that in the unit interval, (such as per minute) discharges in described mixing chamber 2 is made to be 16.7L, therefore, the volume Q2=16.7-Q1 (unit is L) of the gas that (such as per minute) enters in described tail gas draft tube 1 in unit interval, now dilution factor K=Q2/16.7, in this case, described dilution factor can regulate.
In described first sampling pipe 5, described filter membrane gathers PM
2.5particle, in described second sampling pipe 6, described filter membrane gathers PM
10particle, thus make the utility model to gather PM
2.5and PM
10particle, namely particle of the present utility model is specially PM
2.5and PM
10.
The sequencing of above embodiment, only for ease of describing, does not represent the quality of embodiment.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (4)
1. a sampling system for harvester motor-car exhaust particulate thing, is characterized in that, comprises tail gas draft tube, mixing chamber, zero gas draft tube, threeway, the first sampling pipe, the second sampling pipe, first flow controller, Zero gas generator and the first vacuum pump;
Described mixing chamber is communicated with one end of tail gas draft tube with one end of described zero gas draft tube;
The other end of described zero gas draft tube is connected with described Zero gas generator by first flow controller;
Described mixing chamber is also communicated with the inlet end of described threeway, and two exhaust ends of described threeway are communicated with one end of the second sampling pipe respectively at one end of described first sampling pipe,
The other end of described first sampling pipe and the second sampling pipe is all connected to the first vacuum pump, and on described first sampling pipe, the flow direction along the gas in described first sampling pipe is provided with the first cutting head, the first film holder and second amount controller successively; On described second sampling pipe, the flow direction along the gas in described second sampling pipe is provided with the second cutting head, the second film holder and the 3rd flow controller successively.
2. the sampling system of harvester motor-car exhaust particulate thing according to claim 1, is characterized in that, also comprise the second vacuum pump, and the other end of described first sampling pipe connects described first vacuum pump, the other end second vacuum pump of described second sampling pipe.
3. the sampling system of harvester motor-car exhaust particulate thing according to claim 1, it is characterized in that, described first cutting head is PM
2.5cutting head.
4. the sampling system of harvester motor-car exhaust particulate thing according to claim 1, it is characterized in that, described second cutting head is PM
10cutting head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420689266.7U CN204214695U (en) | 2014-11-17 | 2014-11-17 | The sampling system of harvester motor-car exhaust particulate thing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420689266.7U CN204214695U (en) | 2014-11-17 | 2014-11-17 | The sampling system of harvester motor-car exhaust particulate thing |
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| Publication Number | Publication Date |
|---|---|
| CN204214695U true CN204214695U (en) | 2015-03-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198332A (en) * | 2016-07-08 | 2016-12-07 | 李建 | A kind of exhaust gas from diesel vehicle discharged particle portable car-mounted test system |
| CN106323356B (en) * | 2016-09-06 | 2019-03-22 | 清华大学 | A kind of motor vehicle discharge vaporization running losses VOCs emission factor measurement method |
| CN114088459A (en) * | 2021-09-30 | 2022-02-25 | 东风汽车集团股份有限公司 | Tail gas particulate matter gathers frock behind gasoline engine rack |
-
2014
- 2014-11-17 CN CN201420689266.7U patent/CN204214695U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198332A (en) * | 2016-07-08 | 2016-12-07 | 李建 | A kind of exhaust gas from diesel vehicle discharged particle portable car-mounted test system |
| CN106323356B (en) * | 2016-09-06 | 2019-03-22 | 清华大学 | A kind of motor vehicle discharge vaporization running losses VOCs emission factor measurement method |
| CN114088459A (en) * | 2021-09-30 | 2022-02-25 | 东风汽车集团股份有限公司 | Tail gas particulate matter gathers frock behind gasoline engine rack |
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