CN106896078B - A kind of diesel engine vent gas denitration the escaping of ammonia test device - Google Patents
A kind of diesel engine vent gas denitration the escaping of ammonia test device Download PDFInfo
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- CN106896078B CN106896078B CN201710081437.6A CN201710081437A CN106896078B CN 106896078 B CN106896078 B CN 106896078B CN 201710081437 A CN201710081437 A CN 201710081437A CN 106896078 B CN106896078 B CN 106896078B
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- Prior art keywords
- escaping
- gas
- diesel engine
- ammonia
- test device
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 54
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 12
- 239000004202 carbamide Substances 0.000 description 6
- 235000013877 carbamide Nutrition 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Abstract
The present invention relates to a kind of diesel engine vent gas denitration the escaping of ammonia test device, including exhaust gas guide pipe, mixed zone, temperature control area and test section are disposed in the exhaust gas guide pipe, the mixed zone is for uniformly being mixed the tail gas of access；The temperature control area will carry out temperature control by uniformly mixed gas；The test section is used to carry out the test of denitration the escaping of ammonia to by temperature controlled gas.The present invention can meet the miniaturization of narrow pipe road and scalability demand.
Description
Technical field
The present invention relates to technical field of environment protection equipment, test and fill more particularly to a kind of diesel engine vent gas denitration the escaping of ammonia
It sets.
Background technique
With being constantly progressive for life, the travel requirement of scientific and technological continuous development, people is higher and higher.Diesel engine is with its function
The features such as rate is big, and load-carrying is big widely provides power, such as diesel trucks, diesel oil for the outgoing walking-replacing tool of people and large scale equipment
Bus, diesel oil agricultural machinery and implement, diesel-driven generator, diesel ship etc. become the important impetus amount of modern Economy Development.Diesel engine is
Penetrate into the Working Life of people and the every aspect of social economy.But at the same time, the pollution of diesel combustion bring is also continuous
It is improving.Under this overall background, the design and vent gas treatment of more clean and environmental protection become following developing direction.
The diesel engine of carbamide reducing agent is increased compared with normal diesel engine, is not only nitrogen oxides pollution due to urea
Reduction has become nitrogen and water, simultaneously because matching the gasoline of state IV standards, moreover it is possible to reduce oil consumption.
Compared with the instrument of traditional measurement exhaust gas discharge, test carbamide reducing agent more can directly reflect reducing agent dosage
It is whether suitable, it gives front end urea spray system more accurate data control, while reflecting the working condition of catalyst converter, reflects
The reaction efficiency of urea out, it is thus also avoided that generated since urea sprays jelly caused by excess, block catalyst converter.Therefore ammonia is escaped
Ease device is widely used on the large scale industries facility such as coal fired power plant.But miniaturization, it is suitble to the escaping of ammonia dress of diesel engine
It sets, big due to facing diesel engine vent gas temperature change, tail gas is unstable, gas componant uneven distribution, and pipeline is narrow, content is low
Be difficult to the problems such as testing, fail always using.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of diesel engine vent gas denitration the escaping of ammonia test devices, can meet
The miniaturization of narrow pipe road and scalability demand.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of diesel engine vent gas denitration the escaping of ammonia survey
Trial assembly is set, including exhaust gas guide pipe, and mixed zone, temperature control area and test section are disposed in the exhaust gas guide pipe, described mixed
Area is closed for uniformly being mixed the tail gas of access；The temperature control area will carry out temperature control by uniformly mixed gas；
The test section is used to carry out the test of denitration the escaping of ammonia to by temperature controlled gas.
The pipeline of the exhaust gas guide pipe is each made of a metal, and air inlet and air outlet are equipped with for being clamped with corresponding hose
Screw thread or buckle.
The screw thread of the screw thread of the exhaust gas guide pipe air inlet or buckle and exhaust outlet and buckle be mutually matched with it is another
Section exhaust gas guide pipe connection.
Diameter in the exhaust gas guide pipe is 100mm-500mm, and duct length locating for the test section is 500mm-
2000mm, the pipeline pressure resistance of the exhaust gas guide pipe are 2bar.
The blade that multi-disc rotates inward is provided in pipeline locating for the mixed zone.
It is embedded with multi-disc cooling fin on pipeline locating for the temperature control area, is equipped with heating rod between the cooling fin.
Pipeline locating for the test section is straight pipeline, and the both ends of the straight pipeline are equipped with the Laser emission of gas tester
End and laser pick-off end have data telecommunication line to transmit signal between the laser pick-off end and Laser emission end；The laser hair
It penetrates end and the signal handled well is passed into control host by data line.
The gas tester is infrared laser correlation the escaping of ammonia tester.
Beneficial effect
Due to the adoption of the above technical solution, compared with prior art, the present invention having the following advantages that and actively imitating
Fruit: advantages of simple is arranged in structure of the invention, and the degree of modularity is high, and integrated level is high, and assembly is convenient, and being easily assembled and meeting difference makes
With space, most of scenes can be met；The temperature control area of mutliblade mixed zone and multi-disc cooling fin is introduced, therefore makes the gas entered
More evenly, gas temperature can also keep stable to body, so that the present invention not only has the simple characteristic of assembly, but also to enter
More evenly, temperature change is smaller for the gas of test section, it is ensured that test result is more acurrate；Introducing high-precision infrared laser can realize more
Accurately measurement；The present invention is applied widely, the ammonia test after being applicable not only to diesel engine vent gas denitration, it may also be used for other
High precision measurement is needed, the gas being easily affected by temperature.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the cross-sectional view of mixed zone in the present invention；
Fig. 3 is the cross-sectional view of temperature control area in the present invention.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of diesel engine vent gas denitration the escaping of ammonia test device, including exhaust gas guide pipe,
Be disposed with mixed zone, temperature control area and test section in the exhaust gas guide pipe, the tail gas that the mixed zone is used to access into
Row uniformly mixing；The temperature control area will carry out temperature control by uniformly mixed gas；The test section is used for through excess temperature
The gas of degree control carries out the test of denitration the escaping of ammonia.
As shown in Figure 1,1 side of exhaust gas guide pipe have interface and motor vehicle exhaust emission it is tight-lipped it is close want to connect, have in guide wire more
The mixed zone 2 of hole rotatable fin composition is made of the blade that multi-disc rotates inward in pipeline locating for mixed zone 2.The control
Pipeline locating for warm area 3 is embedded with multi-disc cooling fin, is additionally provided with heating rod on the side of part heat sink, locating for the test section 4
Pipeline be straight-run of pipe road, straight pipeline both ends be equipped with laser testing instrument Laser emission end 41 and laser pick-off end 42, test
The gas of completion is discharged through outlet 5, has data telecommunication line 43 to transmit signal between Laser emission end 41 and laser pick-off end 42,
The signal handled well is passed to control host by data line 44 by Laser emission end 41.
In order to enable two exhaust gas guide pipes to connect, there is the clamping mutually of screw thread and buckle between every exhaust gas guide pipe,
According to mixed zone built in subregion or temperature control area, inner hole, length and the direction in exhaust gas guide area under control domain can be modified as needed,
Tubular connector body rear end periphery is provided with stop lug or screw thread, for connecting with another exhaust gas guide pipe or bend pipe.
Pipeline interior diameter is 100mm-500mm, and test section duct length is 500mm-2000mm, and pipeline pressure resistance is 2bar.The bend pipe
Different overbending directions can be chosen as needed to be suitable for requirement of the different scenes to equipment volume and shape.
The gas being discharged by engine outlet be connected to via plastic flexible pipe device inlet (i.e. exhaust gas guide pipe into
Port), the pipeline of exhaust gas guide pipe is made of metal, and air inlet has screw thread or buckle that can be clamped with correspondingly-sized plastic flexible pipe.
As shown in Fig. 2, the gas of entrance passes through the mixed zone 2, Mei Geye being made of eight blades 21 in present embodiment
Piece 21 rotates inward extension, and the blade 21 in mixed zone 2 can be driven by motor, and can also not have to motor driven but the gas by entering
Body pushes to form cyclone, so that the gas of entrance is homogenously mixed together.
As shown in figure 3, mixed gas passes through the radiating area 3 being made of eight cooling fins 31 in present embodiment, dissipate
Backing 31 is each made of a metal, and cooling fin 31 significantly increases the contact area of gas and metal parts, can be to greatest extent
Increase heat exchange, cooperate heating rod 32 and thermometer so that temperature can be controlled well.Cooling fin 31 can basis
Temperature to be tested is needed to add with heat preservation or temperature regulating device in outer ring to meet different clients demand and to different temperatures gas test
Needs.
Gas is entering test section after mixed zone and temperature control area, and the tester that test section uses is infrared laser pair
Formula the escaping of ammonia tester is penetrated, detection limit is up to 0.5ppm hereinafter, precision is in 0.1ppm or smaller.Temperature control dress also can be selected in test section
Set the consistency to ensure gas temperature.
It is not difficult to find that advantages of simple is arranged in structure of the invention, the degree of modularity is high, and integrated level is high, and assembly is convenient, is easy to fill
Match and meet different use spaces, most of scenes can be met；The temperature control area of mutliblade mixed zone and multi-disc cooling fin is introduced,
Therefore make the gas entered more evenly, gas temperature can also keep stable, so that the present invention not only has assembly simple special
Property, and make into test section gas more evenly, temperature change is smaller, it is ensured that test result is more acurrate；Introduce high-precision
Infrared laser can realize more accurate measurement；Applied widely, the ammonia after being applicable not only to diesel engine vent gas denitration of the invention
Test, it may also be used for other need high precision measurement, the gas being easily affected by temperature.
Claims (7)
1. a kind of diesel engine vent gas denitration the escaping of ammonia test device, including exhaust gas guide pipe (1), which is characterized in that the tail gas
It is disposed with mixed zone (2), temperature control area (3) and test section (4) in guide wire (1), the mixed zone (2) will be for that will access
Tail gas is uniformly mixed；The temperature control area (3) will carry out temperature control by uniformly mixed gas；The test section (4)
For carrying out the test of denitration the escaping of ammonia to by temperature controlled gas；Pipeline locating for the test section (4) is straight pipeline, institute
The both ends for stating straight pipeline are equipped with the Laser emission end (41) and laser pick-off end (42) of gas tester, the laser pick-off end
(42) data telecommunication line (43) transmit signal between Laser emission end (41)；The Laser emission end (41) is by what is handled well
Signal passes to control host by data line (44).
2. diesel engine vent gas denitration the escaping of ammonia test device according to claim 1, which is characterized in that the exhaust gas guide
The pipeline of pipe (1) is each made of a metal, and air inlet and air outlet are equipped with screw thread or buckle for being clamped with corresponding hose.
3. diesel engine vent gas denitration the escaping of ammonia test device according to claim 2, which is characterized in that the exhaust gas guide
The screw thread or buckle for managing (1) air inlet are mutually matched with the screw thread of exhaust outlet with buckle to connect with another section of exhaust gas guide pipe.
4. diesel engine vent gas denitration the escaping of ammonia test device according to claim 1, which is characterized in that the exhaust gas guide
Managing the diameter in (1) is 100mm-500mm, and duct length locating for the test section (4) is 500mm-2000mm, the tail gas
The pipeline pressure resistance of guide wire (1) is 2bar.
5. diesel engine vent gas denitration the escaping of ammonia test device according to claim 1, which is characterized in that the mixed zone
(2) blade (21) that multi-disc rotates inward is provided in the pipeline locating for.
6. diesel engine vent gas denitration the escaping of ammonia test device according to claim 1, which is characterized in that the temperature control area
(3) multi-disc cooling fin (31) are embedded on the pipeline locating for, are equipped with heating rod (32) between the cooling fin (31).
7. diesel engine vent gas denitration the escaping of ammonia test device according to claim 1, which is characterized in that the gas test
Instrument is infrared laser correlation the escaping of ammonia tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710081437.6A CN106896078B (en) | 2017-02-15 | 2017-02-15 | A kind of diesel engine vent gas denitration the escaping of ammonia test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710081437.6A CN106896078B (en) | 2017-02-15 | 2017-02-15 | A kind of diesel engine vent gas denitration the escaping of ammonia test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106896078A CN106896078A (en) | 2017-06-27 |
| CN106896078B true CN106896078B (en) | 2019-06-04 |
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ID=59198647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710081437.6A Active CN106896078B (en) | 2017-02-15 | 2017-02-15 | A kind of diesel engine vent gas denitration the escaping of ammonia test device |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201314914Y (en) * | 2008-11-11 | 2009-09-23 | 天津世纪动力科技发展有限公司 | Device for measuring exhaust pollutant from light automobile and engine thereof |
| US9371767B2 (en) * | 2013-09-20 | 2016-06-21 | Tenneco Automotive Operating Company Inc. | Soot load determination system |
| CN104568834B (en) * | 2015-01-08 | 2017-08-08 | 天津大学 | Ammonia checking test based on TDLAS |
| CN105259137A (en) * | 2015-11-04 | 2016-01-20 | 安徽中科智泰光电测控科技有限公司 | Automatic absorption spectrum online in-situ measuring device for laser ammonia escape of pipeline |
| CN205370705U (en) * | 2016-02-24 | 2016-07-06 | 北华大学 | Urea heating mixing arrangement |
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2017
- 2017-02-15 CN CN201710081437.6A patent/CN106896078B/en active Active
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| Publication number | Publication date |
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| CN106896078A (en) | 2017-06-27 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240401 Address after: Room 609-16, Building 2, No. 888 Hezheng Road, Xiangzhou District, Zhuhai City, Guangdong Province, 519000 Patentee after: Zhuhai Maritime Technology Co.,Ltd. Country or region after: China Address before: Unit 701, 7th Floor, Building 4, North District, A5 Future Science and Technology City, No. 999 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430073 Patentee before: WUHAN QICHENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Country or region before: China |
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