CN110056418A - Box-type exhaust post-treatment apparatus of engine - Google Patents

Box-type exhaust post-treatment apparatus of engine Download PDF

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Publication number
CN110056418A
CN110056418A CN201810055379.4A CN201810055379A CN110056418A CN 110056418 A CN110056418 A CN 110056418A CN 201810055379 A CN201810055379 A CN 201810055379A CN 110056418 A CN110056418 A CN 110056418A
Authority
CN
China
Prior art keywords
engine
box
baffle
treatment apparatus
mixing tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810055379.4A
Other languages
Chinese (zh)
Inventor
杨天佐
王聪
童毅君
张建
李军良
顾伟
毛伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenneco Suzhou Emission System Co Ltd
Original Assignee
Tenneco Suzhou Emission System Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tenneco Suzhou Emission System Co Ltd filed Critical Tenneco Suzhou Emission System Co Ltd
Priority to CN201810055379.4A priority Critical patent/CN110056418A/en
Priority to PCT/CN2018/100385 priority patent/WO2019140893A1/en
Publication of CN110056418A publication Critical patent/CN110056418A/en
Pending legal-status Critical Current

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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
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1486—Means to prevent the substance from freezing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

A kind of box-type exhaust post-treatment apparatus of engine comprising shell, several aftertreatment assemblies and cavity components.The shell includes first end cover, first baffle, second baffle, second end cover and shell.The first space is formed between the first end cover and the first baffle, the shell includes the exhaust inlet pipe being connected with first space.The cavity components include mixing tube and air-flow mixing arrangement, and the mixing tube includes inner chamber body, the peripheral and circumferentially distributed several fins for being centered around the inner chamber body, corresponding to several fins and several flutings being connected to the inner chamber body and the antipriming pipe in the mixing tube.The air-flow mixing arrangement is located at the downstream of the antipriming pipe.Compared to the prior art, the present invention enhances the broken and heat transfer effect between wall surface of urea, to reduce the risk of urea crystals by setting antipriming pipe and air-flow mixing arrangement.

Description

Box-type exhaust post-treatment apparatus of engine
Technical field
The present invention relates to a kind of box-type exhaust post-treatment apparatus of engine.
Background technique
Box-type exhaust post-treatment apparatus of engine (such as diesel engine exhausting after-treatment device) be primarily used to processing or Toxic and harmful substance device in evolution exhaust.Harmful toxic matter in exhaust mainly includes hydrocarbon, carbon monoxide, nitrogen Oxide and particulate matter etc..
Have in the prior art using diesel oxidation catalyst (DOC), diesel particulate trap (DPF) and selectivity The scheme that catalytic reducer (SCR) is combined improves the efficiency of vent gas treatment.In a kind of scheme, the oxidized form catalysis turns Parallel operation and grain catcher are arranged in series in first shell, and the first cavity being connected to the first shell is in addition arranged； The selective catalytic reducing agent is arranged in second shell, and the second cavity being connected to the second shell is in addition arranged； Then first, second cavity is together in series by connecting pipe.Exhaust and urea droplets are mixed in connecting pipe, Mixture subsequently enters the second cavity, then by selective catalytic reducing agent, to reduce harmful substance.However, exhaust and urea The mixture of drop is unevenly distributed, and then cannot make mixture uniformly by the selectivity after entering the second cavity Catalytic reducer, it reduce treatment effeciencies.
Summary of the invention
The purpose of the present invention is to provide one kind, and exhaust can be made to realize more uniform mixed box-type hair with urea liquid Motivation exhaust gas post-treatment device.
To achieve the above object, the present invention adopts the following technical scheme: a kind of box-type exhaust post-treatment apparatus of engine, It includes shell, positioned at the intracorporal several aftertreatment assemblies of the shell and the cavity group that aftertreatment assembly connection is got up Part, the shell include first end cover, first baffle, second baffle, second end cover and are wrapped in first, second baffle Periphery and the shell being fixed together with first, second end cap；It is formed between the first end cover and the first baffle There is the first space, the shell includes the exhaust inlet pipe being connected with first space；Several aftertreatment assembly packets It includes the first aftertreatment assembly being at least partially disposed between first, second baffle, be aligned with first aftertreatment assembly And after the second interconnected aftertreatment assembly and two thirds being arranged side by side with first, second aftertreatment assembly Manage component；The first baffle is equipped with the first aperture that first aftertreatment assembly is connected with first space；Institute It states and is formed with second space between second end cover and the second baffle, the second baffle is equipped with the second post-processing group The second aperture that part and the second space are connected and the third aperture being connected with corresponding third aftertreatment assembly；Institute State cavity components include first cavity components of the clasp in second aperture, be connected with first cavity components it is mixed Close tube assembly and the second cavity components the mixer tube assembly to be connected with the third aftertreatment assembly；Institute Stating mixer tube assembly includes mixing tube and air-flow mixing arrangement, and the mixing tube includes inner chamber body, is centered around the inner chamber body Peripheral and circumferentially distributed several fins, corresponding to several fins and several flutings for being connected to the inner chamber body with And the antipriming pipe in the mixing tube；The air-flow mixing arrangement is located at the downstream of the antipriming pipe.
Technical solution as a further improvement of that present invention, the exhaust inlet pipe against and be fixed on the first baffle On, the exhaust inlet pipe is equipped with several gas vents being connected to first space on the peripheral wall；The shell further includes The exhaust exit pipe being connected with the second space.
Technical solution as a further improvement of that present invention, the second baffle are equipped with perforative through-hole, the mixing tube The through-hole is vacantly passed through, the fin at least partly extends beyond the second baffle.
Technical solution as a further improvement of that present invention, the mixer tube assembly include positioned at the second baffle and right The sleeve part of through-hole described in Ying Yu, the sleeve part are equipped with the extended cavity, and the fin is at least partially disposed at the extended cavity In.
Technical solution as a further improvement of that present invention, first aftertreatment assembly include diesel oxidation catalyst with And the first perforated distributor positioned at the upstream of the diesel oxidation catalyst；Second aftertreatment assembly includes diesel particulate Trap；The third aftertreatment assembly includes selective catalytic reducing agent.
Technical solution as a further improvement of that present invention, the box-type exhaust post-treatment apparatus of engine include fixing On the second end cover and the mounting portion to install urea nozzle, the urea nozzle into the antipriming pipe to spray Urea droplets.
Technical solution as a further improvement of that present invention, second cavity components include being connected to the mixing tube Interstitial hole and two connecting holes positioned at the interstitial hole two sides, the connecting hole are connected with corresponding third aftertreatment assembly It is logical.
Technical solution as a further improvement of that present invention, the air-flow mixing arrangement include being fixed in the mixing tube Mixer, the mixer includes cylindrical portion and several spoilers for being fixed in the cylindrical portion.
Technical solution as a further improvement of that present invention, the air-flow mixing arrangement include being located at the second cavity group The diffuser being connected in part and with the mixing tube, the diffuser are equipped with several diffusion holes being distributed on its circumference.
Technical solution as a further improvement of that present invention, the air-flow mixing arrangement include being located at the second cavity group The bowl cover being aligned in part and with the mixing tube, the bowl are provide with the spherical that the oriented mixing tube protrudes out.
Technical solution as a further improvement of that present invention, the air-flow mixing arrangement include being located at the second cavity group The end bowl being aligned in part and with the mixing tube, the end bowl are equipped with to receive the bearing space of air-flow and protrude into described Spherical in bearing space.
Technical solution as a further improvement of that present invention, the air-flow mixing arrangement include being located at the second cavity group It the diffuser that is connected in part and with the mixing tube and is aligned in second cavity components and with the mixing tube End bowl, the diffuser is equipped with several diffusion holes for being distributed on its circumference；The end bowl is equipped with to receive holding for air-flow It carries space and protrudes into the spherical in the bearing space.
Technical solution as a further improvement of that present invention, the air-flow mixing arrangement include being fixed in the mixing tube Mixer, if the mixer is located at the upstream of the diffuser and including cylindrical portion and is fixed in the cylindrical portion Interfere flow.
Compared to the prior art, the present invention is mixed by the way that antipriming pipe is arranged with air-flow mixing arrangement twice, is enhanced The broken and heat transfer effect between wall surface of urea, to reduce the risk of urea crystals.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of box-type exhaust post-treatment apparatus of engine of the present invention.
Fig. 2 is the stereoscopic schematic diagram of another angle of Fig. 1.
Fig. 3 is the stereogram exploded view of Fig. 1.
Fig. 4 is the stereogram exploded view of another angle of Fig. 3.
Fig. 5 is the stereoscopic schematic diagram removed in Fig. 2 after the first, second end cap.
Fig. 6 is the stereoscopic schematic diagram of another angle of Fig. 5.
Fig. 7 is the main view of Fig. 1.
Fig. 8 is the top view of Fig. 1.
Fig. 9 is the bottom view of Fig. 1.
Figure 10 is the left view of Fig. 1.
Figure 11 is the right view of Fig. 1.
Figure 12 is the stereoscopic schematic diagram removed in Fig. 6 after first end cover.
Figure 13 is the stereoscopic schematic diagram removed in Figure 12 after first baffle.
Figure 14 is the stereoscopic schematic diagram removed in Figure 13 after shell.
Figure 15 is the main view of Fig. 2.
Figure 16 is the diagrammatic cross-section of the line A-A along Figure 15.
Figure 17 is the diagrammatic cross-section of the line B-B along Figure 15.
Figure 18 is diagrammatic cross-section of the line C-C in first embodiment along Figure 15.
Figure 19 is the stereoscopic schematic diagram of mixer in Figure 18.
Figure 20 is diagrammatic cross-section of the line C-C in second embodiment along Figure 15.
Figure 21 is the stereoscopic schematic diagram of diffuser in Figure 20.
Figure 22 is diagrammatic cross-section of the line C-C in third embodiment along Figure 15.
Figure 23 is the stereoscopic schematic diagram of bowl cover in Figure 22.
Figure 24 is the stereoscopic schematic diagram of another angle of Figure 23.
Figure 25 is diagrammatic cross-section of the line C-C in the 4th embodiment along Figure 15.
Figure 26 is the stereoscopic schematic diagram of bowl cover in Figure 25.
Figure 27 is the stereoscopic schematic diagram of another angle of Figure 26.
Specific embodiment
It please join shown in Fig. 1 to Figure 17, present invention discloses a kind of box-type exhaust post-treatment apparatus of engine 100, packets Include shell 1, several aftertreatment assemblies in the shell 1 and the cavity group that aftertreatment assembly connection is got up Part.
In illustrative embodiments of the present invention, the shell 1 includes first end cover 10, first baffle 11, second baffle 12, second end cover 13 and it is wrapped in first, second baffle, 11,12 periphery and solid with first, second end cap 10,13 It is scheduled on shell 14 together.
It please join shown in Figure 16 and Figure 17, be formed with the first space between the first end cover 10 and the first baffle 11 15, second space 16 is formed between the second end cover 13 and the second baffle 12.The shell 1 includes across described The exhaust inlet pipe 17 and the exhaust being connected with the second space 16 that one end cap 10 enters in first space 15 Outlet 18.The exhaust inlet pipe 17 is equipped with several gas vents 171 being connected to first space 15 on the peripheral wall, with Conducive to the distribution of air-flow.In illustrative embodiments of the present invention, the exhaust inlet pipe 17 against and be fixed on described first On baffle 11, to play booster action.
Several aftertreatment assemblies include be at least partially disposed between first, second baffle 11,12 first after Processing component 21, the second aftertreatment assembly 22 for being aligned and being interconnected with first aftertreatment assembly 21 and with described One, two third aftertreatment assemblies 23 that the second aftertreatment assembly 21,22 is arranged side by side.In illustrative embodiments of the present invention In, first aftertreatment assembly 21 is including diesel oxidation catalyst 211 and positioned at the upstream of the diesel oxidation catalyst The first perforated distributor 212.Second aftertreatment assembly 22 includes diesel particulate trap 221.Third aftertreatment assembly 23 include selective catalytic reducing agent 231.
The first baffle 11 is equipped with first that first aftertreatment assembly 21 is connected with first space 15 Aperture 111.The second baffle 12 is equipped with second that second aftertreatment assembly 22 is connected with the second space 16 Aperture 121 and the third aperture 122 being connected with corresponding third aftertreatment assembly 23.
It please join shown in Fig. 2 and Figure 16, the box-type exhaust post-treatment apparatus of engine 100 further includes being fixed on described On two end caps 13 and the mounting portion 19 to install urea nozzle (not shown).
The cavity components include first cavity components 31 and first chamber of the clasp in second aperture 121 Mixer tube assembly 33 that body component 31 is connected and to by the mixer tube assembly 33 and the third aftertreatment assembly 23 The second cavity components 32 being connected.
The mixer tube assembly 33 includes mixing tube 38 and the sleeve part 39 matched with mixing tube 38.The mixing tube 38 include inner chamber body 381, peripheral and circumferentially distributed several fins 382 for being centered around the inner chamber body 381, correspond to it is described Several fins 382 and several flutings 383 being connected to the inner chamber body 381 and the antipriming pipe in the mixing tube 38 384.The antipriming pipe 384 is axial at least partly Chong Die with the fin 382 along it.The urea nozzle is to described porous Urea droplets are sprayed in pipe 384, the broken and heat transfer effect between the wall surface of mixing tube 38 of urea droplets are enhanced, to drop The low risk of urea crystals.
It please join shown in Figure 16, the second baffle 12 is additionally provided with perforative through-hole 123, and the mixing tube 38 vacantly passes through The through-hole 123, the fin 382 at least partly extend beyond the second baffle 12.The sleeve part 39 corresponds to described Through-hole 123.The sleeve part 39 is equipped with the extended cavity 391, and the fin 382 is at least partially disposed in the extended cavity 391. The present invention increases installation space in the inside of box-type exhaust post-treatment apparatus of engine 100, no by setting sleeve part 39 The overall dimensions of box-type exhaust post-treatment apparatus of engine 100 are confined to, and can be come by adjusting the volume of extended cavity 391 The back pressure of system is adjusted flexibly, realizes standardized designs.
Second cavity components 32 include the interstitial hole 321 being connected to the mixing tube 38 and be located at the interstitial hole Two connecting holes 322 of 321 two sides, the connecting hole 322 are connected with corresponding third aftertreatment assembly 23.
It please join shown in Figure 18 and Figure 19, the mixer tube assembly 33 further includes the gas positioned at the downstream of the antipriming pipe 384 Flow mixing arrangement 4.In the first embodiment, the air-flow mixing arrangement 4 includes the mixing being fixed in the mixing tube 38 Device 41, the mixer 41 include cylindrical portion 411 and several spoilers 412 being fixed in the cylindrical portion 411.
It please join shown in Figure 20 and Figure 21, in this second embodiment, the air-flow mixing arrangement 4 includes being located at described second The diffuser 42 being connected in cavity components 32 and with the mixing tube 38, the diffuser 42 are equipped with and are distributed on its circumference Several diffusion holes 421.
It please join shown in Figure 22 to Figure 24, in the third embodiment, the air-flow mixing arrangement 4 includes being located at described second The bowl cover 43 being aligned in cavity components 32 and with the mixing tube 38, the bowl cover 43 are equipped with the ball protruded out to the mixing tube 38 Shape face 431.
It please join shown in Figure 25 to Figure 27, in the fourth embodiment, the air-flow mixing arrangement 4 includes being located at described second The end bowl 44 being aligned in cavity components 32 and with the mixing tube 38, the end bowl 44 are equipped with the bearing space to receive air-flow 441 and protrude into spherical 442 in the bearing space 441.
Certainly, above-mentioned four kinds of embodiments can also carry out permutation and combination appropriate, such as by first embodiment and the Two embodiments are combined, to improve air-flow mixed effect.In addition, second embodiment can also for example be implemented with the 4th Mode is combined, i.e., the end bowl 44 is arranged in diffuser 42, air-flow mixed effect can be improved；On this basis, It can also be integrated together with first embodiment, can be further improved air-flow mixed effect.
In addition, above embodiments are merely to illustrate the present invention and not limit the technical scheme described by the invention, to this The understanding of specification should be based on person of ordinary skill in the field, although this specification is referring to the above embodiments pair Present invention has been detailed description, still, those skilled in the art should understand that, the technology of technical field Personnel still can modify or equivalently replace the present invention, and all do not depart from the technology of the spirit and scope of the present invention Scheme and its improvement should all be covered in scope of the presently claimed invention.

Claims (13)

1. a kind of box-type exhaust post-treatment apparatus of engine comprising shell is located at the intracorporal several post-processing groups of the shell Part and the cavity components that aftertreatment assembly connection is got up, the shell includes first end cover, first baffle, second gear It plate, second end cover and is wrapped in first, second baffle periphery and is fixed together with first, second end cap outer Shell；The first space is formed between the first end cover and the first baffle, the shell includes and first space phase The exhaust inlet pipe of connection；Several aftertreatment assemblies include be at least partially disposed between first, second baffle One aftertreatment assembly, the second aftertreatment assembly for being aligned and being interconnected with first aftertreatment assembly and with described One, two third aftertreatment assemblies that the second aftertreatment assembly is arranged side by side；It is characterized by: the first baffle is equipped with institute State the first aperture that the first aftertreatment assembly is connected with first space；Between the second end cover and the second baffle It is formed with second space, the second baffle is equipped with second that second aftertreatment assembly is connected with the second space Aperture and the third aperture being connected with corresponding third aftertreatment assembly；The cavity components include clasp described second The first cavity components in aperture, the mixer tube assembly being connected with first cavity components and to by the mixing The second cavity components that tube assembly is connected with the third aftertreatment assembly；The mixer tube assembly includes mixing tube and gas Flow mixing arrangement, the mixing tube include inner chamber body, the peripheral and circumferentially distributed several fins for being centered around the inner chamber body, Corresponding to several fins and several flutings being connected to the inner chamber body and the antipriming pipe in the mixing tube；Institute State the downstream that air-flow mixing arrangement is located at the antipriming pipe.
2. box-type exhaust post-treatment apparatus of engine as described in claim 1, it is characterised in that: the exhaust inlet pipe supports It leans on and is fixed on the first baffle, the exhaust inlet pipe is equipped on the peripheral wall several to be connected to first space Gas vent；The shell further includes the exhaust exit pipe being connected with the second space.
3. box-type exhaust post-treatment apparatus of engine as described in claim 1, it is characterised in that: the second baffle is equipped with Perforative through-hole, the mixing tube vacantly pass through the through-hole, and the fin at least partly extends beyond the second baffle.
4. box-type exhaust post-treatment apparatus of engine as claimed in claim 3, it is characterised in that: the mixer tube assembly packet The sleeve part of the through-hole is included positioned at the second baffle and corresponds to, the sleeve part is equipped with the extended cavity, the fin It is at least partially disposed in the extended cavity.
5. box-type exhaust post-treatment apparatus of engine as described in claim 1, it is characterised in that: the first post-processing group Part includes diesel oxidation catalyst and the first perforated distributor positioned at the upstream of the diesel oxidation catalyst；Described second Aftertreatment assembly includes diesel particulate trap；The third aftertreatment assembly includes selective catalytic reducing agent.
6. box-type exhaust post-treatment apparatus of engine as described in claim 1, it is characterised in that: the box-type engine Exhaust gas post-treatment device include it is fixed on the second end cover and the mounting portion to install urea nozzle, the urea nozzle To spray urea droplets into the antipriming pipe.
7. box-type exhaust post-treatment apparatus of engine as described in claim 1, it is characterised in that: second cavity components Including the interstitial hole that is connected to the mixing tube and positioned at two connecting holes of the interstitial hole two sides, the connecting hole with it is right The third aftertreatment assembly answered is connected.
8. box-type exhaust post-treatment apparatus of engine as described in claim 1, it is characterised in that: the air-flow mixing arrangement Including the mixer being fixed in the mixing tube, if the mixer includes cylindrical portion and is fixed in the cylindrical portion Interfere flow.
9. box-type exhaust post-treatment apparatus of engine as claimed in claim 1 or 8, it is characterised in that: the air-flow mixing Device includes the diffuser being connected in second cavity components and with the mixing tube, and the diffuser is equipped with distribution Several diffusion holes on its circumference.
10. box-type exhaust post-treatment apparatus of engine as claimed in claim 1 or 8, it is characterised in that: the air-flow mixing Device includes the bowl cover being aligned in second cavity components and with the mixing tube, and the bowl is provide with the oriented mixing The spherical that pipe protrudes out.
11. box-type exhaust post-treatment apparatus of engine as claimed in claim 1 or 8, it is characterised in that: the air-flow mixing Device includes the end bowl being aligned in second cavity components and with the mixing tube, and the end bowl is equipped with to receive gas The bearing space of stream and protrude into spherical in the bearing space.
12. box-type exhaust post-treatment apparatus of engine as described in claim 1, it is characterised in that: the air-flow mixing dress It sets including being located at the diffuser being connected in second cavity components and with the mixing tube and being located at second cavity The end bowl being aligned in component and with the mixing tube, the diffuser are equipped with several diffusion holes being distributed on its circumference；It is described Bowl is held to be equipped with to receive the bearing space of air-flow and protrude into the spherical in the bearing space.
13. box-type exhaust post-treatment apparatus of engine as claimed in claim 12, it is characterised in that: the air-flow mixing dress Set the mixer including being fixed in the mixing tube, the mixer be located at the upstream of the diffuser and including cylindrical portion with And it is fixed on several spoilers in the cylindrical portion.
CN201810055379.4A 2018-01-19 2018-01-19 Box-type exhaust post-treatment apparatus of engine Pending CN110056418A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810055379.4A CN110056418A (en) 2018-01-19 2018-01-19 Box-type exhaust post-treatment apparatus of engine
PCT/CN2018/100385 WO2019140893A1 (en) 2018-01-19 2018-08-14 Box-type engine exhaust post-treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810055379.4A CN110056418A (en) 2018-01-19 2018-01-19 Box-type exhaust post-treatment apparatus of engine

Publications (1)

Publication Number Publication Date
CN110056418A true CN110056418A (en) 2019-07-26

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Country Status (2)

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CN (1) CN110056418A (en)
WO (1) WO2019140893A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021213146A1 (en) * 2020-04-21 2021-10-28 天纳克（苏州）排放***有限公司 Exhaust gas aftertreatment package
WO2021213145A1 (en) * 2020-04-21 2021-10-28 天纳克（苏州）排放***有限公司 Exhaust gas post-treatment package

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* Cited by examiner, † Cited by third party
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