CN220137089U - Portable quick measuring device for pollutant emission of civil cooking range - Google Patents
Portable quick measuring device for pollutant emission of civil cooking range Download PDFInfo
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- CN220137089U CN220137089U CN202223575627.9U CN202223575627U CN220137089U CN 220137089 U CN220137089 U CN 220137089U CN 202223575627 U CN202223575627 U CN 202223575627U CN 220137089 U CN220137089 U CN 220137089U
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- mass flow
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- flow controller
- flue gas
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 23
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 22
- 238000010411 cooking Methods 0.000 title claims description 9
- 238000005070 sampling Methods 0.000 claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 29
- 239000000779 smoke Substances 0.000 claims abstract description 28
- 238000002474 experimental method Methods 0.000 claims abstract description 20
- 238000010790 dilution Methods 0.000 claims abstract description 16
- 239000012895 dilution Substances 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 15
- 239000003738 black carbon Substances 0.000 claims abstract description 9
- 239000003517 fume Substances 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 231100000701 toxic element Toxicity 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a portable rapid measuring device for pollutant emission of a civil stove, which comprises an air dilution structure, a box-type flue gas capturing structure, a sampling test structure and an emission structure, wherein the air dilution structure comprises a primary filter, a high-efficiency filter, a detachable fixed sleeve, a first flow control valve, a blower and an air supply pipeline; the box-type flue gas trapping structure comprises a sealed experiment box, a smoke hood and a detachable metal reducer pipe; the sampling test structure comprises a first branch mass flow controller and PM 2.5 A testing device, a second branch mass flow controller,The device comprises a flue gas analyzer, a third branch mass flow controller, a black carbon meter and a sampling tube; the exhaust structure comprises an air filter, a second flow control valve and an induced draft fan. The utility model has simple structure, high measuring speed, high efficiency, portability and strong applicability to different structures and arrangement places of rural stoves.
Description
Technical Field
The utility model belongs to the field of environmental pollutant emission monitoring, and particularly relates to a rapid detection system for a flue gas pollutant emission site in a combustion process of a civil cooking range.
Background
In China, residents in rural areas and urban suburbs still adopt the traditional civil cooking ranges to carry out household cooking and heating activities, solid fuels such as coal, wood, crop straws and the like are used as main household fuels, and when the solid fuels are directly combusted in the traditional cooking ranges, the cooking ranges have the advantages of simple structure, poor mixing effect of the fuels and air, insufficient combustion and generation of a large amount of particulate matters and gaseous pollutants such as PM 2.5 BC, organic Carbon (OC), toxic elements, CO, NO X And SO 2 And the like, and can be directly discharged into the atmosphere without taking any pollution protection measures, so that serious environmental pollution is brought and the human health is endangered.
The civil stove belongs to a small combustion source, the use position is flexible, the fume emission rate is unstable, part of rural stoves have no flue and chimney, the fume escapes everywhere, the fume is difficult to capture, and the traditional fume testing system is difficult to detect. The device for measuring the smoke pollutants of the civil stove in the laboratory can realize on-line monitoring of different combustion stages of the civil stove, is convenient for collecting smoke, but cannot realize on-site test due to huge experimental system and sampling device equipment and is not convenient to carry.
At present, the emission test of atmospheric pollutants of civil coal is not in international and domestic standards. The U.S. environmental protection agency standard methods Method5G and Method5H recommend the use of both the hood and flue methods, but have some drawbacks:
(1) Part of the flue gas does not enter the chimney and leaks into the surrounding environment, the sealing performance of the traditional stove is poor, the leakage is particularly obvious, and the part of pollutants cannot be collected and monitored by adopting the two methods, so that the accuracy of a measurement result is affected.
(2) The interference of pollutants in the environment cannot be eliminated, and the air entering the stove and the dilution line is generally unfiltered.
(3) The flue method has the problems of uneven flue gas flow velocity and temperature distribution in a chimney, quicker change and the like, and the emission factor can be accurately obtained only by simultaneously measuring the flue gas flow velocity on line during the test. Thus, even data measured for the same fuel is inferior in the actual measurement, which brings inconvenience to the evaluation of fuel and stove performance.
Disclosure of Invention
The technical problems to be solved are as follows: the utility model aims to provide a portable rapid measuring device for pollutant emission of a civil stove, which aims at the problems of various structures, crude devices, difficult flue gas collection, inconvenient field test and the like of the rural civil stove, adopts a detachable pipeline as a whole device, improves the flue gas collection method on the basis of a smoke hood method and a flue method, and analyzes the collected flue gas and particulate matters for pollutants.
The technical scheme is as follows: a portable, consumer range pollutant emission rapid assay device, the device comprising:
an air dilution structure 1, the air dilution structure 1 comprising a primary filter 101, a high efficiency filter 102, a detachable fixing sleeve 103, a first flow control valve 104, a blower 105, and a blower duct 106;
the box-type flue gas capturing structure 2 comprises a sealed experiment box 201, a flue gas hood 202 and a detachable metal reducer 203;
sampling test structure 3, said sampling test structure 3 comprising a first branch mass flow controller 301, PM 2.5 A testing device 302, a second branch mass flow controller 303, a flue gas analyzer 304, a third branch mass flow controller 305, a black carbon meter 306, and a sampling tube 307;
a discharge structure 4, the discharge structure 4 comprising an air filter 401, a second flow control valve 402 and an induced draft fan 403;
the air dilution structure 1 is connected with a sealed experiment box 201 of the box-type flue gas trapping structure 2 through an air supply pipeline 106; the sampling pipe 307 of the sampling test structure 3 is communicated with the detachable metal reducer 203 of the box-type flue gas capturing structure 2 and is used for sampling; the discharge structure 4 is connected to the outlet end of the detachable metal reducing pipe 203.
Preferably, in the air dilution structure 1, the primary filter 101 is connected with the high-efficiency filter 102, the high-efficiency filter 102 is connected with the first flow control valve 104 through the detachable fixing sleeve 103, the connection flow control valve 104 is communicated with the blower 105, and the blower 105 guides filtered air or on-site fresh air into the sealed experiment box 201 through the air supply pipeline 106. Preferably, the furnace and the fume hood 202 are placed in the sealed experiment box 201, and the fume hood 202 is used for extracting fume generated by the furnace; the smoke cage 202 is connected with a detachable metal reducing pipe 203.
Preferably, the sampling tube 307 in the sampling test structure 3 is communicated with the detachable metal reducing tube 203 for collecting the flue gas; the sampling tube 307 is connected to the first, second and third branch mass flow controllers 301, 303, 305, respectively; the first branch mass flow controller 301 is connected to PM 2.5 And the testing device 302, the second branch mass flow controller 303 is connected with the flue gas analyzer 304, and the third branch mass flow controller 305 is connected with the black carbon analyzer 306.
Preferably, the detachable metal reducing pipe 203 is connected with an air filter 401, the air filter 401 is connected with a second flow control valve 402, the second flow control valve 402 is connected with an induced draft fan 403, and the induced draft fan 403 is connected with a pipeline for evacuating gas from the device.
Preferably, the inner frame of the sealed experiment box 201 in the box-type flue gas capturing structure 2 is composed of a detachable metal pipe 203, and the outer part is sealed by using a flexible fireproof cover.
Preferably, the fume hood 202 in the box fume collecting structure 2 is funnel-shaped, the large opening is downward, and the distance between the fume hood and the stove can be adjusted by increasing or decreasing the number of the detachable metal reducing pipes 203.
The beneficial effects are that:
1. the utility model has simple structure, high measuring speed, high efficiency, portability, and stronger applicability to different structures and arrangement places of rural stoves, and overcomes the defect that a laboratory test system is difficult to be applied on site because the sealing experiment box is connected with the flue gas conveying pipeline by adopting the detachable fixing device.
2. The upper end of the smoke hood in the box type smoke trapping structure is connected with the detachable metal reducer pipe, the distance between the smoke hood and the experimental furnace can be adjusted by increasing or reducing unit pipelines, and the smoke hood has good adaptability to the conditions of different stoves in rural areas, such as chimney or no chimney, and different heights and structures.
3. When the condition of eliminating the interference of particulate matters in the air is considered, the air dilution structure adopts the two-layer filtering structure, so that partial particulate matters and organic gases in the air can be removed, the interference of high background concentration of the atmosphere to the emission measurement of the cooking range is avoided, meanwhile, the two-layer filtering structure is removed through the detachable sleeve, the smoke leakage circulation phenomenon caused by rural indoor combustion is suitable, the actual condition is met, and the smoke pollutant analysis under the two conditions can be compared.
Drawings
FIG. 1 is a schematic diagram of a portable rapid measuring device for pollutant discharge of a civil stove, wherein the device comprises a 101-primary filter, a 102-high-efficiency filter, a 103-detachable fixed sleeve, a 104-first flow control valve, a 105-blower, a 106-air supply pipeline, a 201-sealed experiment box, a 202-fume hood, a 203-detachable metal reducer, a 301-first branch mass flow controller and a 302-PM 2.5 The device comprises a testing device, 303-a second branch mass flow controller, 304-a flue gas analyzer, 305-a third branch mass flow controller, 306-a black carbon meter, 307-a sampling tube, 401-an air filter, 402-a second flow control valve and 403-an induced draft fan.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and examples, which are illustrative of the utility model and not intended to limit the utility model to the examples below:
examples
The utility model discloses a portable rapid measuring device for pollutant emission of civil stoves, which is shown in figure 1, and comprises: an air dilution structure 1, the air dilution structure 1 comprising a primary filter 101, a high efficiency filter 102, a detachable fixing sleeve 103, a first flow control valve 104, a blower 105, and a blower duct 106;
the box-type flue gas capturing structure 2 comprises a sealed experiment box 201, a flue gas hood 202 and a detachable metal reducer 203;
sampling test structure 3, said sampling test structure 3 comprising a first branch mass flow controller 301, PM 2.5 A testing device 302, a second branch mass flow controller 303, a flue gas analyzer 304, a third branch mass flow controller 305, a black carbon meter 306, and a sampling tube 307;
a discharge structure 4, the discharge structure 4 comprising an air filter 401, a second flow control valve 402 and an induced draft fan 403;
the air dilution structure 1 is connected with a sealed experiment box 201 of the box-type flue gas trapping structure 2 through an air supply pipeline 106; the sampling pipe 307 of the sampling test structure 3 is communicated with the detachable metal reducer 203 of the box-type flue gas capturing structure 2 and is used for sampling; the discharge structure 4 is connected to the outlet end of the detachable metal reducing pipe 203.
In the air dilution structure 1, a primary filter 101 is connected with a high-efficiency filter 102, the high-efficiency filter 102 is connected with a first flow control valve 104 through a detachable fixed sleeve 103, the connected flow control valve 104 is communicated with a blower 105, and the blower 105 guides filtered air or on-site fresh air into a sealed experiment box 201 through a blower pipeline 106. A stove and a fume hood 202 are arranged in the sealed experiment box 201, and the fume hood 202 is used for extracting fume generated by the stove; the smoke cage 202 is connected with a detachable metal reducing pipe 203.
The sampling tube 307 in the sampling test structure 3 is communicated with the detachable metal reducing tube 203 and is used for collecting smoke; the sampling tube 307 is connected to the first, second and third branch mass flow controllers 301, 303, 305, respectively; the first branch mass flow controller 301 is connected to PM 2.5 And the testing device 302, the second branch mass flow controller 303 is connected with the flue gas analyzer 304, and the third branch mass flow controller 305 is connected with the black carbon analyzer 306.
The detachable metal reducing pipe 203 is connected with an air filter 401, the air filter 401 is connected with a second flow control valve 402, the second flow control valve 402 is connected with an induced draft fan 403, and the induced draft fan 403 is connected with a pipeline for exhausting gas from the device.
The inner frame of the sealed experiment box 201 in the box-type flue gas capturing structure 2 is composed of a detachable metal pipe 203, and the outside is sealed by using a flexible fireproof cover.
The fume hood 202 in the box fume collecting structure 2 is funnel-shaped, the large mouth is downward, and the distance between the fume hood and the stove can be adjusted by increasing or decreasing the number of the detachable metal reducing pipes 203.
The working process of the device is as follows:
the blower 105 is started, the flow rate of the first flow control valve 104 is adjusted to enable external air to enter the air supply pipeline 106, air is selected to pass through a two-layer filtering structure of the primary filter 101 and the advanced filter 102 or directly enter the sealed experiment box 201 from the detachable fixed sleeve 103 according to experiment requirements, the induced draft fan 403 is started, the smoke sampling test structure is started, the mass flow controllers of the three branches of the first branch mass flow controller 301, the second branch mass flow controller 303 and the third branch mass flow controller 305 are adjusted to proper flow rates, and smoke is respectively sent into the PM2.5 test device 302, the smoke analyzer 304 and the black carbon meter 306 through the sampling pipe 307 for on-line monitoring of each part. The civil stove is arranged below the smoke hood 202, a detachable metal reducer 203 is connected above the smoke hood 202, the distance between the smoke hood and the stove is adjusted by changing the number of unit pipelines of the detachable metal reducer 203, the stove is ignited, the air supply and exhaust air quantity is controlled, the total trapping of the smoke is ensured, and the smoke which does not enter the smoke sampling test structure is discharged from a pipeline above a draught fan 403 after being filtered by an air filter 401 by adjusting the flow of a second flow control valve 402. After the combustion is finished, the sampling test structure is closed, the working states of the blower 105 and the induced draft fan 403 are stopped, and the test is finished.
The above embodiments are merely illustrative of the preferred embodiments of the present utility model and are not limited thereto, and it is within the scope of the present utility model to those skilled in the art to make simple modifications and equivalent variations to the above embodiments without departing from the technical solution of the present utility model.
Claims (7)
1. A portable quick measuring device for pollutant emission of civil cooking range is characterized in that: the device comprises: the device comprises an air dilution structure (1), a box-type flue gas capturing structure (2), a sampling test structure (3) and an emission structure (4);
the air dilution structure (1) comprises a primary filter (101), a high-efficiency filter (102), a detachable fixed sleeve (103), a first flow control valve (104), a blower (105) and a blower pipeline (106);
the box-type flue gas capturing structure (2) comprises a sealed experiment box (201), a smoke hood (202) and a detachable metal reducer pipe (203);
the sampling test structure (3) comprises a first branch mass flow controller (301), PM 2.5 A testing device (302), a second branch mass flow controller (303), a flue gas analyzer (304), a third branch mass flow controller (305), a black carbon meter (306) and a sampling tube (307);
the exhaust structure (4) comprises an air filter (401), a second flow control valve (402) and an induced draft fan (403);
the air dilution structure (1) is connected with a sealed experiment box (201) of the box-type flue gas trapping structure (2) through an air supply pipeline (106); a sampling tube (307) of the sampling test structure (3) is communicated with a detachable metal reducer (203) of the box-type flue gas capturing structure (2) and is used for sampling; the discharge structure (4) is connected to the outlet end of the detachable metal reducing pipe (203).
2. The portable rapid measurement device for pollutant emission of civil stoves according to claim 1, characterized in that: the primary filter (101) is connected with the efficient filter (102) in the air dilution structure (1), the efficient filter (102) is connected with the first flow control valve (104) through the detachable fixed sleeve (103), the first flow control valve (104) is communicated with the air feeder (105), and the air feeder (105) guides filtered air or on-site fresh air into the sealed experiment box (201) through the air supply pipeline (106).
3. The portable rapid measurement device for pollutant emission of civil stoves according to claim 1, characterized in that: a stove and a smoke hood (202) are arranged in the sealed experiment box (201), and the smoke hood (202) is used for extracting smoke generated by the stove; the fume hood (202) is connected with a detachable metal reducer pipe (203).
4. The portable rapid measurement device for pollutant emission of civil stoves according to claim 1, characterized in that: a sampling pipe (307) in the sampling test structure (3) is communicated with the detachable metal reducer pipe (203) and is used for collecting smoke; the sampling pipe (307) is respectively connected with the first branch mass flow controller (301), the second branch mass flow controller (303) and the third branch mass flow controller (305); the first branch mass flow controller (301) is connected with PM 2.5 And the second branch mass flow controller (303) is connected with the smoke analyzer (304), and the third branch mass flow controller (305) is connected with the black carbon analyzer (306).
5. The portable rapid measurement device for pollutant emission of civil stoves according to claim 1, characterized in that: the detachable metal reducing pipe (203) is connected with an air filter (401), the air filter (401) is connected with a second flow control valve (402), the second flow control valve (402) is connected with an induced draft fan (403), and the induced draft fan (403) is connected with a pipeline for exhausting gas from the device.
6. The portable rapid measurement device for pollutant emission of civil stoves according to claim 1, characterized in that: the inner frame of the sealed experiment box (201) in the box-type flue gas capturing structure (2) is composed of detachable metal reducer pipes (203), and the outside is sealed by using a flexible fireproof cover.
7. The portable rapid measurement device for pollutant emission of civil stoves according to claim 1, characterized in that: the fume hood (202) in the box fume collecting structure (2) is funnel-shaped, the large opening is downward, and the distance between the fume hood and the stove can be adjusted by increasing or decreasing the number of the detachable metal reducer pipes (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223575627.9U CN220137089U (en) | 2022-12-30 | 2022-12-30 | Portable quick measuring device for pollutant emission of civil cooking range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223575627.9U CN220137089U (en) | 2022-12-30 | 2022-12-30 | Portable quick measuring device for pollutant emission of civil cooking range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220137089U true CN220137089U (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223575627.9U Active CN220137089U (en) | 2022-12-30 | 2022-12-30 | Portable quick measuring device for pollutant emission of civil cooking range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220137089U (en) |
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2022
- 2022-12-30 CN CN202223575627.9U patent/CN220137089U/en active Active
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