CN113756922B - Six-emission diesel engine test bench tail gas treatment control device - Google Patents
Six-emission diesel engine test bench tail gas treatment control device Download PDFInfo
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- CN113756922B CN113756922B CN202111150491.4A CN202111150491A CN113756922B CN 113756922 B CN113756922 B CN 113756922B CN 202111150491 A CN202111150491 A CN 202111150491A CN 113756922 B CN113756922 B CN 113756922B
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- diesel engine
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- test bench
- control device
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 112
- 230000003197 catalytic effect Effects 0.000 claims abstract description 36
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003054 catalyst Substances 0.000 claims abstract description 33
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 33
- 230000003647 oxidation Effects 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 17
- 239000004202 carbamide Substances 0.000 claims abstract description 15
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 abstract description 20
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/002—Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention provides a diesel engine test bench tail gas treatment control device with six emissions, and belongs to the technical field of tail gas treatment mechanisms. The exhaust treatment control device of the test bench of the diesel engine with six emissions comprises a basic component and an assembly component. The basic subassembly includes PLC controller, urea measurement jet pump, intake pipe, oxidation catalyst DOC, particle trapper DPF, catalytic converter SCR, ammonia escape processor ASC, blast pipe, first nitrogen oxide sensor, first riser, second riser, third riser, first inserted bar and second nitrogen oxide sensor, during the use, the electro-magnet firmly adsorbs the iron plate, has fixed the second inserted bar in the box promptly, then can continue to handle tail gas, clear up the particle trapper DPF who pulls down again, this controlling means is convenient for carry out quick replacement to particle trapper DPF, improved the treatment effeciency to tail gas.
Description
Technical Field
The invention relates to the field of tail gas treatment mechanisms, in particular to a device for controlling tail gas treatment of a test bench of a diesel engine with six emissions.
Background
Diesel engines are engines that burn diesel to obtain energy release. The diesel oil is sprayed into the combustion chamber under high pressure, and the diffusion combustion mode of spraying and burning is carried out after compression ignition, and the working mode determines that the mixing of the diesel oil and air is uneven, and the situation of partial oxygen deficiency or partial oxygen enrichment is unavoidable. The oil is easy to char to form soot when the oil is high Wen Queyang. The adjustment of the load of the diesel vehicle is controlled by changing the fuel injection quantity. The mixed gas of the diesel vehicle is always in a relatively dilute state, that is, the combustion chamber of the diesel engine always has surplus air. Such surplus air is liable to generate nitrogen oxides NOx under the effect of high temperature, and thus diesel vehicles are characterized by a large amount of particulate matter and nitrogen oxides (NOx) emissions.
At present, when the existing diesel engine test bench tail gas treatment control device is required to detach the particle catcher DPF from between the oxidation catalyst DOC and the catalytic converter SCR, a plurality of bolts are required to be detached to detach the particle catcher DPF, so that the replacement time of the particle catcher DPF is too long, and the treatment efficiency of tail gas is reduced.
Disclosure of Invention
In order to overcome the defects, the invention provides a diesel engine test bench tail gas treatment control device with six emissions, which aims to solve the problems that when a particle catcher DPF needs to be detached from a position between an oxidation catalyst DOC and a catalytic converter SCR, a plurality of bolts need to be detached to detach the particle catcher DPF, so that the replacement time of the particle catcher DPF is overlong, and the tail gas treatment efficiency is reduced.
The invention is realized in the following way:
the invention provides a tail gas treatment control device of a diesel engine test bench with six emissions, which comprises a base component and an assembly component.
The basic subassembly includes PLC controller, urea measurement jet pump, intake pipe, oxidation catalyst DOC, particulate trap DPF, catalytic converter SCR, ammonia escape processor ASC, blast pipe, first nitrogen oxide sensor, first riser, second riser, third riser, first inserted bar and second nitrogen oxide sensor, the one end of intake pipe sets up on the oxidation catalyst DOC, the second riser is fixed on the other end of oxidation catalyst DOC, first riser is fixed on the one end of catalytic converter SCR, ammonia escape processor ASC sets up on the other end of catalytic converter SCR, the third riser is fixed the tip of particulate trap DPF, first riser and one of them third riser laminating together, second riser and another third riser laminating together.
The first inserted link slides simultaneously and runs through first riser second riser with the third riser, the blast pipe sets up on ammonia escape processor ASC's the other end, first nitrogen oxide sensor sets up in the inner wall of intake pipe, the second nitrogen oxide sensor sets up in the inner wall of blast pipe, urea metering jet pump sets up outside catalytic converter SCR, urea metering jet pump first nitrogen oxide sensor with second nitrogen oxide sensor all with PLC controller electric connection is in the same place.
The assembly component comprises an electromagnet, a box body, a baffle, a second inserted bar, an iron block and a supporting plate, wherein the electromagnet is respectively fixed on the outer wall of the oxidation catalyst DOC and the outer wall of the catalytic converter SCR, the baffle is fixed on the side surface of the box body, the box body and the baffle are respectively sleeved on the first inserted bar in a sliding mode, the supporting plate is respectively fixed on the outer wall of the oxidation catalyst DOC and the outer wall of the catalytic converter SCR, the iron block is fixed at the end part of the second inserted bar, the second inserted bar simultaneously slides and penetrates through the box body, the first inserted bar and the supporting plate, and the electromagnet is also electrically connected with the PLC.
In one embodiment of the invention, the base assembly further comprises a seal ring, one of the seal rings being disposed between the first riser and the third riser, the other of the seal rings being disposed between the second riser and the third riser.
In one embodiment of the present invention, the first plunger is provided with a through hole, and the second plunger penetrates through the through hole.
In one embodiment of the invention, the assembly further comprises a first guide sleeve fixed within the baffle, the first plunger sliding through the first guide sleeve.
In one embodiment of the invention, the assembly further comprises a cross bar secured to an outer wall of the second plunger.
In one embodiment of the invention, the support plate comprises a plate body and a column, one end of the column is fixed on the outer wall of the oxidation catalyst DOC and the outer wall of the catalytic converter SCR, respectively, and the plate body is fixed on the other end of the column.
In one embodiment of the invention, at least three first plugs are provided, the first plugs being axially equidistant on the outer wall of the particle trap DPF.
In one embodiment of the invention, the iron block has an area smaller than an area of the second plunger end.
In one embodiment of the invention, the assembly further comprises a lifting lug, the lifting lug being fixed to an outer wall of the box.
In one embodiment of the invention, the assembly further comprises a second guide sleeve fixed to the case, the second plunger sliding through the second guide sleeve.
The beneficial effects of the invention are as follows: according to the exhaust treatment control device of the test bench of the diesel engine, which is obtained through the design, when the exhaust treatment control device is used, the injection of exhaust into the air inlet pipe is stopped when the exhaust of the particle catcher DPF is required to be cleaned, the PLC controller controls the electromagnet to be closed, the second inserted rod can be pulled out from the supporting plate and the box body, the first inserted rod is pulled out from the first vertical plate, the second vertical plate and the third vertical plate, the particle catcher DPF can be detached from the position between the oxidation catalyst DOC and the catalytic converter SCR, the new particle catcher DPF is inserted between the oxidation catalyst DOC and the catalytic converter SCR, the first inserted rod passes through the first vertical plate, the second vertical plate and the third vertical plate, the baffle plate and the box body are sleeved on the first inserted rod, the side surface of the baffle plate is fixed between the oxidation catalyst DOC and the catalytic converter SCR, the second inserted rod is simultaneously inserted into the box body, the electromagnet is controlled to be opened, the electromagnetic iron catcher DPF is adsorbed by the electromagnet, and the exhaust treatment efficiency of the DPF can be continuously changed, and the exhaust treatment control device can be further conveniently carried out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a tail gas treatment control device for a test bench of a diesel engine with six national emissions according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a diesel engine test bench tail gas treatment control device with six emissions according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a base assembly according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of an assembled component according to an embodiment of the present invention;
fig. 5 is an enlarged view of area a in fig. 4 according to an embodiment of the present invention.
In the figure: 100-a base component; 110-a PLC controller; 120-urea metering jet pump; 130-an air inlet pipe; 140-oxidation catalyst DOC; 150-a particulate trap DPF; 160-catalytic converter SCR; 170-ammonia slip processor ASC; 180-exhaust pipe; 190-a first nitrogen oxide sensor; 191-a first riser; 192-a second riser; 193-third riser; 194-sealing rings; 195-a first plunger; 196-a second nox sensor; 200-assembling the assembly; 210-an electromagnet; 220-a box body; 230-baffle; 240-through holes; 250-a first guide sleeve; 260-a second plunger; 270-a cross bar; 280-iron block; 290-a support plate; 2901-plate body; 2902-posts; 291-lifting lug; 292-second guide sleeve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Examples
Referring to fig. 1-5, the present invention provides a technical solution: a six-emission diesel engine test bench tail gas treatment control device comprises a base assembly 100 and an assembly 200. The assembly 200 is secured to the base assembly 100 and the control device facilitates quick replacement of the particle trap DPF150, improving the efficiency of the treatment of the exhaust gas.
Referring to fig. 1-3, the base assembly 100 includes a PLC controller 110, a urea metering jet pump 120, an air inlet pipe 130, an oxidation catalyst DOC140, a particulate trap DPF150, a catalytic converter SCR160, an ammonia slip processor ASC170, an exhaust pipe 180, a first nitrogen oxide sensor 190, a first riser 191, a second riser 192, a third riser 193, a first insert 195, and a second nitrogen oxide sensor 196, one end of the air inlet pipe 130 is disposed on the oxidation catalyst DOC140, the second riser 192 is welded on the other end of the oxidation catalyst DOC140, the first riser 191 is welded on one end of the catalytic converter SCR160, the ammonia slip processor ASC170 is disposed on the other end of the catalytic converter SCR160, the third riser 193 is welded on the end of the particulate trap DPF150, the first riser 191 is bonded to one of the third risers 193, the second riser 192 is bonded to the other third riser 193, the base assembly 100 further includes a seal 194, one of the seals 194 is disposed between the first riser 191 and the third riser 193, the other seal 194 is disposed between the second riser 194 and the third riser 193 and the catalytic converter SCR160, and the seal 150 is better.
The first inserted rods 195 simultaneously slide through the first vertical plates 191, the second vertical plates 192 and the third vertical plates 193, the first inserted rods 195 are at least three, the first inserted rods 195 are axially equidistantly arranged on the outer wall of the particle catcher DPF150, the particle catcher DPF150 is more firmly fixed between the oxidation catalyst DOC140 and the catalytic converter SCR160 by the first inserted rods 195, the exhaust pipe 180 is arranged at the other end of the ammonia escape processor ASC170, the first nitrogen oxide sensor 190 is arranged in the inner wall of the intake pipe 130, the second nitrogen oxide sensor 196 is arranged in the inner wall of the exhaust pipe 180, the urea metering injection pump 120 is arranged outside the catalytic converter SCR160, and the urea metering injection pump 120, the first nitrogen oxide sensor 190 and the second nitrogen oxide sensor 196 are electrically connected with the PLC controller 110.
Referring to fig. 2, 4 and 5, the assembly 200 includes an electromagnet 210, a case 220, a damper 230, a second insert rod 260, an iron block 280 and a support plate 290, wherein the electromagnet 210 is respectively fixed on an outer wall of the oxidation catalyst DOC140 and an outer wall of the catalytic converter SCR160 by bolts, the damper 230 is respectively fixed on a side surface of the case 220 by bolts, the case 220 and the damper 230 are both slidably sleeved on the first insert rod 195, the assembly 200 further includes a first guide sleeve 250, the first guide sleeve 250 is welded in the damper 230, the first insert rod 195 slidably penetrates the first guide sleeve 250, the first guide sleeve 250 enables the damper 230 to be more rapidly sleeved on the first insert rod 195, the support plate 290 is respectively fixed on an outer wall of the oxidation catalyst DOC140 and an outer wall of the catalytic converter SCR160 by bolts, the support plate 290 includes a plate 2901 and a stand 2902, one end of the stand 2902 is respectively fixed on an outer wall of the oxidation catalyst DOC140 and an outer wall of the catalytic converter SCR160 by bolts, the plate 2901 is fixedly arranged on the other end of the stand 2902 by bolts, and the stand 280 enables the baffle 230 to be more rapidly sleeved on the first insert rod 195, and the second insert rod 260 is more fixedly arranged on the end of the support plate 290 by bolts.
The second insert rod 260 simultaneously slides through the box 220, the first insert rod 195 and the supporting plate 290, the assembly 200 further comprises a second guide sleeve 292, the second guide sleeve 292 is welded on the box 220, the second insert rod 260 slides through the second guide sleeve 292, the second guide sleeve 292 facilitates the second insert rod 260 to penetrate through the box 220, the assembly 200 further comprises a cross rod 270, the cross rod 270 is fixed on the outer wall of the second insert rod 260 through bolts, the cross rod 270 facilitates the second insert rod 260 to be pulled, the first insert rod 195 is provided with a through hole 240, the second insert rod 260 penetrates through the through hole 240, the through hole 240 facilitates the second insert rod 260 to penetrate through the first insert rod 195, the electromagnet 210 is electrically connected with the PLC controller 110, the area of the iron block 280 is smaller than the area of the end portion of the second insert rod 260, the iron block 280 is facilitated to penetrate through the supporting plate 290, the assembly 200 further comprises a lifting lug 291, the lifting lug 291 is fixed on the outer wall of the box 220 through bolts, and the lifting lug 291 is facilitated to hang the box 220.
Specifically, the operating principle of the exhaust treatment control device of the test bench of the diesel engine with six emissions in China is as follows: when the engine is used, tail gas generated when the engine performs performance test on the bench passes through the first nitrogen oxide sensor 190, the first nitrogen oxide sensor 190 detects the nitrogen and oxygen content in the tail gas, the first nitrogen oxide sensor 190 transmits signals to the PLC controller 110, the tail gas flows through the oxidation catalyst DOC140 again, the oxidation catalyst DOC140 oxidizes CO, HC and SOF in the exhaust after diesel combustion, particulate emission substances are captured before entering the atmosphere through the particulate trap DPF150, the particulate emission substances are discharged through the exhaust pipe 180 through the catalytic converter SCR160 and the ammonia escape processor ASC170, the second nitrogen oxide sensor 196 detects the nitrogen oxide content in the treated tail gas, the second nitrogen oxide sensor 196 transmits signals to the PLC controller 110, the PLC controller 110 controls the urea metering jet pump 120 to jet a proper amount of urea according to the nitrogen oxide content transmitted by the first nitrogen oxide sensor 190 and the second nitrogen oxide sensor 196, the ammonia exhaust gas flows through the ammonia escape processor SCR 170 after passing through the catalytic converter SCR160, the ammonia is treated six ammonia gas and then discharged to the atmosphere through the exhaust pipe, the exhaust pipe is well controlled by the exhaust pipe, the exhaust pipe is well regulated, the exhaust gas emission requirements of the engine can not only meet the requirements of the national regulation, but also the national emission requirements of the national regulation of the exhaust emission can be met; when the particle catcher DPF150 needs to be cleaned, the injection of the exhaust gas into the air inlet pipe 130 is stopped, the PLC controller 110 controls the electromagnet 210 to be closed, the second insert rod 260 can be pulled out from the support plate 290 and the box 220, the first insert rod 195 can be pulled out from the first vertical plate 191, the second vertical plate 192 and the third vertical plate 193, the particle catcher DPF150 can be detached from the position between the oxidation catalyst DOC140 and the catalytic converter SCR160, the new particle catcher DPF150 is inserted back between the oxidation catalyst DOC140 and the catalytic converter SCR160, the first insert rod 195 passes through the first vertical plate 191, the second vertical plate 192 and the third vertical plate 193, the baffle 230 and the box 220 are sleeved on the first insert rod 195, the side surface of the baffle 230 is fixed between the oxidation catalyst DOC140 and the catalytic converter SCR160 by pressing the outer walls of the first vertical plate 191, the second insert rod 260 is simultaneously inserted into the box 220, the first insert rod 195 and the support plate 195, the electromagnet 210 is controlled to be opened, and the particle catcher DPF150 can be continuously cleaned, and the exhaust gas can be cleaned continuously.
It should be noted that, specific model specifications of the PLC controller 110, the urea metering injection pump 120, the oxidation catalyst DOC140, the particulate trap DPF150, the catalytic converter SCR160, the ammonia slip processor ASC170, the first nitrogen oxide sensor 190, the second nitrogen oxide sensor 196, and the electromagnet 210 need to be determined by selecting the model according to the actual specifications of the device, and the specific model selection calculation method adopts the prior art in the field, so that detailed descriptions thereof will be omitted.
The power supply and the principles thereof for the PLC controller 110, urea metering injection pump 120, oxidation catalyst DOC140, particulate trap DPF150, catalytic converter SCR160, ammonia slip processor ASC170, first nitrogen oxide sensor 190, second nitrogen oxide sensor 196, and electromagnet 210 will be apparent to those skilled in the art and will not be described in detail herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a six diesel engine test bench tail gas treatment controlling means that discharges in state which characterized in that includes
A base assembly (100), the base assembly (100) comprising a PLC controller (110), a urea metering jet pump (120), an air inlet pipe (130), an oxidation catalyst DOC (140), a particulate trap DPF (150), a catalytic converter SCR (160), an ammonia slip processor ASC (170), an exhaust pipe (180), a first nitrogen oxide sensor (190), a first riser (191), a second riser (192), a third riser (193), a first insert rod (195) and a second nitrogen oxide sensor (196), one end of the air inlet pipe (130) being disposed on the oxidation catalyst DOC (140), the second riser (192) being secured to the other end of the oxidation catalyst DOC (140), the first riser (191) being secured to one end of the catalytic converter SCR (160), the ammonia slip processor (170) being disposed on the other end of the catalytic converter SCR (160), the third riser (193) being secured to an end of the particulate trap DPF (150), the first riser (191) and the third riser (193) being in conforming relationship with the other one another riser (193);
the first plunger (195) simultaneously slides through the first vertical plate (191), the second vertical plate (192) and the third vertical plate (193), the exhaust pipe (180) is arranged at the other end of the ammonia escape processor ASC (170), the first nitrogen oxide sensor (190) is arranged in the inner wall of the intake pipe (130), the second nitrogen oxide sensor (196) is arranged in the inner wall of the exhaust pipe (180), the urea metering jet pump (120) is arranged outside the catalytic converter SCR (160), and the urea metering jet pump (120), the first nitrogen oxide sensor (190) and the second nitrogen oxide sensor (196) are electrically connected with the PLC (110);
the assembly component (200), the assembly component (200) comprises an electromagnet (210), a box body (220), a baffle plate (230), a second inserted link (260), an iron block (280) and a supporting plate (290), wherein the electromagnet (210) is respectively fixed on the outer wall of the oxidation catalyst DOC (140) and the outer wall of the catalytic converter SCR (160), the baffle plate (230) is fixed on the side surface of the box body (220), the box body (220) and the baffle plate (230) are both sleeved on the first inserted link (195) in a sliding manner, the supporting plate (290) is respectively fixed on the outer wall of the oxidation catalyst DOC (140) and the outer wall of the catalytic converter SCR (160), the iron block (280) is fixed at the end part of the second inserted link (260), the second inserted link (260) simultaneously penetrates through the box body (220), the first inserted link (195) and the supporting plate (290), and the electromagnet (210) is electrically connected with the PLC (110) together;
wherein, a through hole (240) is arranged on the first inserted link (195), and the second inserted link (260) penetrates through the through hole (240);
wherein, backup pad (290) include plate body (2901) and stand (2902), the one end of stand (2902) is fixed respectively on the outer wall of oxidation catalyst DOC (140) and the outer wall of catalytic converter SCR (160), plate body (2901) is fixed on the other end of stand (2902).
2. The exhaust treatment control device for a six-state emission diesel engine test bench of claim 1, wherein said base assembly (100) further comprises a seal ring (194), one of said seal rings (194) being disposed between said first riser (191) and said third riser (193), the other of said seal rings (194) being disposed between said second riser (192) and said third riser (193).
3. The exhaust treatment control device of a six-state emission diesel engine test bench of claim 1, wherein the assembly (200) further comprises a first guide sleeve (250), the first guide sleeve (250) being fixed within the baffle plate (230), the first insert rod (195) sliding through the first guide sleeve (250).
4. The exhaust treatment control device of a six-state emission diesel engine test bench of claim 1, wherein said assembly (200) further comprises a cross bar (270), said cross bar (270) being secured to an outer wall of said second plunger (260).
5. The exhaust gas treatment control device for a six-state emission diesel engine test bench according to claim 1, wherein the area of the iron block (280) is smaller than the area of the end of the second insert rod (260).
6. The exhaust gas treatment control device for a six-state emission diesel engine test bench of claim 1, wherein the assembly (200) further comprises a lifting lug (291), and the lifting lug (291) is fixed on an outer wall of the box (220).
7. The exhaust treatment control device for a six-state emission diesel engine test bench of claim 1, wherein the assembly (200) further comprises a second guide sleeve (292), the second guide sleeve (292) being fixed to the housing (220), the second plunger (260) sliding through the second guide sleeve (292).
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| CN107989675A (en) * | 2017-12-04 | 2018-05-04 | 潍柴动力股份有限公司 | Integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics |
| CN108625933A (en) * | 2018-06-25 | 2018-10-09 | 江阴市硕淳环保科技有限公司 | A kind of diesel particulate trap based on DOC and DPF |
| CN111749773A (en) * | 2020-08-03 | 2020-10-09 | 广西玉柴机器股份有限公司 | Tail gas emission control system of non-road diesel engine |
| CN215890159U (en) * | 2021-09-29 | 2022-02-22 | 广西玉柴机器股份有限公司 | Diesel engine test bench tail gas treatment control device that six state discharged |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2655819A4 (en) * | 2010-12-22 | 2017-01-25 | Mahindra & Mahindra Limited | Integrated exhaust gas after-treatment system for diesel fuel engines |
| KR101795402B1 (en) * | 2016-04-29 | 2017-11-08 | 현대자동차 주식회사 | Exhaust system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989675A (en) * | 2017-12-04 | 2018-05-04 | 潍柴动力股份有限公司 | Integrated form DOC-DPF-SCR assembly apparatus for After-treatment technics |
| CN108625933A (en) * | 2018-06-25 | 2018-10-09 | 江阴市硕淳环保科技有限公司 | A kind of diesel particulate trap based on DOC and DPF |
| CN111749773A (en) * | 2020-08-03 | 2020-10-09 | 广西玉柴机器股份有限公司 | Tail gas emission control system of non-road diesel engine |
| CN215890159U (en) * | 2021-09-29 | 2022-02-22 | 广西玉柴机器股份有限公司 | Diesel engine test bench tail gas treatment control device that six state discharged |
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