CN111237040A - Tractor is with tail gas aftertreatment device who takes thermal-insulated rain-proof function that keeps warm - Google Patents
Tractor is with tail gas aftertreatment device who takes thermal-insulated rain-proof function that keeps warm Download PDFInfo
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- CN111237040A CN111237040A CN202010207409.6A CN202010207409A CN111237040A CN 111237040 A CN111237040 A CN 111237040A CN 202010207409 A CN202010207409 A CN 202010207409A CN 111237040 A CN111237040 A CN 111237040A
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- 238000009413 insulation Methods 0.000 claims abstract description 66
- 238000004321 preservation Methods 0.000 claims abstract description 34
- 229910001220 stainless steel Inorganic materials 0.000 claims description 55
- 239000010935 stainless steel Substances 0.000 claims description 55
- 230000001681 protective effect Effects 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 13
- 229920000742 Cotton Polymers 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 239000011888 foil Substances 0.000 claims description 11
- 238000004806 packaging method and process Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 23
- 238000012805 post-processing Methods 0.000 description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 230000033228 biological regulation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
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- 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
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- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/085—Other arrangements or adaptations of exhaust conduits having means preventing foreign matter from entering exhaust conduit
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- 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
- F01N13/14—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 thermal insulation
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention relates to a tail gas post-treatment device with heat insulation and rainproof functions for a tractor, which comprises a tail gas post-treatment system, a heat insulation and preservation system and a rainproof system, wherein the heat insulation and preservation system is arranged outside the tail gas post-treatment system; on the other hand, through rain insensitive device, can effectually prevent that the rainwater from getting into aftertreatment device, avoid the rainwater to get into and cause the influence to the performance of carrier, catalyst, liner.
Description
Technical Field
The invention belongs to the technical field of tractor tail gas emission post-treatment, and particularly relates to a tail gas post-treatment device with heat insulation and rainproof functions for a tractor.
Background
As is well known, diesel engines are becoming more popular because of their higher thermal efficiency, good reliability and durability. At present, the emission regulations of the six countries and the four countries of non-roads in China strictly limit the particulate matter quality emission, the particulate matter quantity emission and the nitrogen oxide emission of the diesel engine, and the increasingly strict emission regulations force diesel engine manufacturers to install particle traps and selective catalytic reduction devices to meet the requirements of new emission regulations.
An Oxidation type catalytic converter (DOC), which oxidizes carbon monoxide (CO), Hydrocarbons (HC), and nitrogen monoxide (NO) in exhaust gas to be harmless through catalytic Oxidation; a particle trap (DPF) traps particulates in engine exhaust in a Filter structure through a Filter material, which is a well-known solution for Diesel Particulate Filter (DPF) at presentOne of the most effective means for the problems of particulate emissions from oil engines; selective Catalytic Reduction (SCR) device for removing toxic Nitrogen Oxides (NO) from exhaust gasX) Converted into nontoxic nitrogen (N) by selective catalytic reduction reaction2) And water (H)2O), is one of the most effective means currently recognized for solving the problem of nitrogen oxides in diesel engines.
In the operation process of the tractor, higher requirements are put on the surface temperature, and particularly in the active regeneration process of the DPF, the post-treatment of the tail gas of the tractor is required to have better heat insulation function; meanwhile, in order to improve the catalytic conversion efficiency under the low load of SCR and require the post-treatment of the tail gas of the tractor to have better heat preservation function under the condition of low exhaust temperature; moreover, due to the seasonal operation characteristic of the tractor, the tractor can be placed outdoors for a long time, and rain and snow can enter the post-processing device and finally gather at the lowest part of the exhaust pipeline in rainy and snowy weather; rainwater accumulates in the exhaust pipe for a long time, and adversely affects the performance of the carrier, the gasket, and the catalyst, and finally affects the performance and durability of the exhaust aftertreatment device of the tractor.
Therefore, how to solve the heat insulation and rain protection problems of the tractor tail gas after-treatment device is of great importance for improving the reliability and durability of the after-treatment device.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the tail gas aftertreatment device with the heat insulation and rainproof functions for the tractor, which has the advantages of compact structure, convenience in disassembly and assembly and strong universality, and can meet the heat insulation and rainproof requirements of different types of aftertreatment devices.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a tractor is with taking tail gas aftertreatment device of rain-proof function of thermal-insulated heat preservation, includes: the system comprises a tail gas post-treatment system, a heat insulation and preservation system and a rainproof system, wherein the tail gas post-treatment system comprises a post-treatment unit, a post-treatment V-shaped clamp and a post-treatment end vertebral canal, and the post-treatment unit and the post-treatment end vertebral canal are connected together through the post-treatment V-shaped clamp; the heat insulation and preservation system is arranged outside the tail gas post-treatment system and sequentially comprises a double-layer stainless steel knurled heat insulation and preservation device, a double-layer aluminum foil heat insulation and preservation device and a post-treatment protective cover, wherein the double-layer stainless steel knurled heat insulation and preservation device is connected with a post-treatment unit of the tail gas post-treatment system through welding; the double-layer aluminum foil heat insulation device is wrapped on the double-layer stainless steel knurled heat insulation device, and the post-treatment protective cover is arranged on the outer side of the double-layer aluminum foil heat insulation device and fixed on a base of the post-treatment unit; the rain-proof system includes blast pipe, blast pipe guard shield, the water conservancy diversion awl and the rain-proof cap at blast pipe top, the rain collector between blast pipe and the blast pipe guard shield and connect the rain-proof pipe on the blast pipe guard shield, and the rain-proof system is connected with tail gas aftertreatment end taper pipe through the blast pipe, and the blast pipe guard shield of rain-proof system is connected with thermal-insulated heat preservation system's aftertreatment protection casing.
Furthermore, the exhaust pipe is arranged on the taper pipe at the post-processing end and is fixed through an exhaust pipe hoop; the exhaust pipe shield is arranged on the outer side of the exhaust pipe and is connected with the post-treatment protective cover through an exhaust pipe shield hoop; the exhaust pipe protection cover end cone cover is installed on the exhaust pipe protection cover, and the rain-proof pipe is installed on the exhaust pipe protection cover end cone cover and fixed through the rain-proof pipe hoop.
Further, rain-proof cap is cavity taper and conical surface bottom diameter is greater than the external diameter of blast pipe, and the water conservancy diversion awl is cavity taper and conical surface bottom diameter and is less than the internal diameter of blast pipe, water conservancy diversion awl cone angle is established downwards inside the blast pipe top and is linked together through welding and blast pipe, rain-proof cap cone angle is upwards covered on the blast pipe top and is connected with the water conservancy diversion awl through welding, is equipped with a plurality of exhaust holes on the blast pipe wall in the water conservancy diversion awl outside.
Furthermore, the inner side of the rain collector is connected with the exhaust pipe through welding, the outer side of the rain collector is connected with the exhaust pipe shield, the upper part of the rain collector is provided with an inclined conical surface, and the cone angle of the conical surface of the rain collector is the same as that of the guide cone.
Furthermore, the rain-proof pipe comprises a first straight pipe section, a transition pipe section, a second straight pipe section and a rain-proof pipe section, wherein the axis of the first straight pipe section coincides with the axis of the exhaust pipe and is connected with the end cone cover of the exhaust pipe protective cover, the axis of the second straight pipe section is perpendicular to the axis of the exhaust pipe and is connected with the first straight pipe section through the transition section, the other end of the second straight pipe section is connected with the rain-proof pipe section, the pipe orifice of the rain-proof pipe section is inclined, the extending amount of the pipe wall of the upper end of the rain-proof pipe section is larger than the extending.
Further, the double-layer stainless steel knurled heat-insulation device comprises an outer stainless steel thin steel plate, an inner stainless steel thin steel plate and heat-insulation cotton, the heat-insulation cotton is located between the outer stainless steel thin steel plate and the inner stainless steel thin steel plate, stainless steel knurled protrusions are arranged on the outer stainless steel thin steel plate and the inner stainless steel thin steel plate, the knurled protrusions face the direction far away from the heat-insulation cotton, the double-layer stainless steel knurled heat-insulation device is fixed on a post-processing unit of the post-processing system in a welding mode, and the stainless steel knurled protrusions on the inner stainless steel thin steel plate are in contact with the outer surface of the post-processing unit of the post-processing system.
Furthermore, the post-treatment unit is composed of one or more packaging units of an oxidation type catalytic converter DOC, a particle trap DPF and a selective catalytic reduction device SCR, and when the post-treatment unit is composed of more than two packaging units, the packaging units are connected together in a V-shaped clamp or flange connection mode.
Has the advantages that: the tail gas post-treatment device with the heat preservation, heat insulation and rainproof functions for the tractor has the advantages of reasonable design, compact structure, convenience in disassembly and assembly and strong universality, and can meet the heat preservation, heat insulation and rainproof requirements of different types of post-treatment devices: on one hand, the surface temperature of the treatment device can be effectively reduced under the condition of higher temperature after the vortex by the heat insulation and preservation device, and the heat dissipation capacity of the post-treatment device can be reduced under the condition of lower temperature after the vortex, so that the low-temperature performance of a post-treatment product is improved; on the other hand, through rain insensitive device, can effectually prevent that the rainwater from getting into aftertreatment device, avoid the rainwater to get into and cause the influence to the performance of carrier, catalyst, liner.
Drawings
FIG. 1 is a schematic diagram of the main system structure of the present invention;
FIG. 2 is a schematic diagram of a system embodying the present invention;
FIG. 3 is a partial structural view of the double-layer stainless steel knurling heat insulation device of the present invention;
fig. 4 is a schematic view of the rain protection pipe structure of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in figure 1, the invention provides an exhaust gas post-treatment device with heat insulation and rainproof functions for a tractor, which comprises: tail gas aftertreatment system S10, thermal-insulated heat preservation system S20, rain-proof system S30, thermal-insulated heat preservation system S20 establishes in tail gas aftertreatment system S10 outside, plays thermal-insulated heat preservation effect, and rain-proof system S30 is connected with tail gas aftertreatment system S10 and thermal-insulated heat preservation system S20, and the effectual rainwater that prevents gets into aftertreatment device.
As shown in fig. 2, the exhaust gas aftertreatment system S10 includes: a post-treatment unit 11, a post-treatment end vertebral canal 13 and a post-treatment V-shaped clamp 12; the post-treatment unit 11 and the post-treatment end cone 13 are connected together through a post-treatment V-shaped clamp 12, wherein the post-treatment unit is composed of one or more packaging units of DOC (oxidation type catalytic converter), DPF (particulate filter), SCR (selective catalytic reduction device), including but not limited to the following combination modes: DOC, DPF, SCR, DOC + DPF, DOC + SCR, DPF + SCR, DOC + DPF + SCR; when the post-processing unit consists of more than two packaging units, the packaging units are connected together through a V-shaped clamp.
The heat insulation system S20 includes: a double-layer stainless steel knurling heat insulation device 21, a double-layer aluminum foil heat insulation device 22 and a post-treatment protective cover 23; the double-layer aluminum foil heat insulation device 22 is wrapped on the double-layer stainless steel knurled heat insulation device 21, the post-treatment protective cover 23 is arranged on the outer side of the double-layer aluminum foil heat insulation device 22, and the post-treatment protective cover 23 is fixed on the post-treatment unit 11; specifically, the stainless steel knurl heat insulation and preservation device 21 of the heat insulation and preservation system S20 is connected with the post-processing unit 11 of the tail gas post-processing system S10 through welding; the aftertreatment guard 23 of the insulated holding system S20 is secured to the base of the aftertreatment unit 11.
As shown in fig. 3, the double-layer stainless knurled heat insulating and preserving device 21 includes an outer stainless steel thin plate 213, an inner stainless steel thin plate 211, and a heat insulating cotton 212, the heat insulating cotton 212 being located between the outer stainless steel thin plate 213 and the inner stainless steel thin plate 211; the stainless steel knurl protrusion is arranged on the outer stainless steel thin plate 213 and the inner stainless steel thin plate 211, one side of the stainless steel knurl protrusion faces outwards (namely, the protrusion faces away from the heat preservation cotton), the double-layer stainless steel knurl heat insulation device 21 is fixed on the post-treatment unit 11 of the post-treatment system S10 through a welding mode, as shown in FIG. 3, the stainless steel knurl protrusion arranged on the inner stainless steel thin plate 211 of the double-layer stainless steel knurl heat insulation device 21 is in contact with the outer surface of the post-treatment unit 11 of the post-treatment system S10.
In the working process of the engine, because the surface of the inner stainless steel thin steel plate 211 of the double-layer stainless steel knurled heat-insulating device 21 is provided with the bulge, the contact area between the inner stainless steel thin steel plate 211 of the double-layer stainless steel knurled heat-insulating device 21 and the post-processing unit 11 is greatly reduced, the heat transfer efficiency from the post-processing unit 11 to the heat-insulating cotton 212 of the double-layer stainless steel knurled heat-insulating device 21 is reduced, and the purpose of primary heat insulation is achieved; then when the heat is transferred to the outer stainless steel thin steel plate 213 of the double-layer stainless steel knurled heat insulation device 21 through the heat insulation cotton 212 of the double-layer stainless steel knurled heat insulation device 21, the surface temperature of the outer stainless steel thin steel plate 213 of the double-layer stainless steel knurled heat insulation device 21 is further reduced due to the small heat conductivity coefficient of the heat insulation cotton 212; the double-layer aluminum foil heat insulation device 22 is wrapped on the double-layer stainless steel knurled heat insulation device 21 and can further play a role in heat insulation; the heat is transferred between the double-layer aluminum foil heat insulation device 22 and the post-treatment protective cover 23 mainly in a heat radiation mode, the heat transfer rate is further reduced, and the purpose of reducing the surface temperature of the post-treatment protective cover 23 is finally achieved.
As shown in fig. 2, the rain protection system S30 includes: the exhaust pipe protective cover comprises an exhaust pipe protective cover 32, an exhaust pipe 33, an exhaust pipe protective cover hoop 30, an exhaust pipe hoop 31, a rain collector 34, a diversion cone 35, a rain-proof cap 36, an exhaust pipe protective cover end cone cover 37, a rain-proof pipe hoop 38 and a rain-proof pipe 39. The exhaust pipe 33 is arranged on the post-processing end taper pipe 13, and the exhaust pipe shield 32 is arranged outside the exhaust pipe 33 and connected with the post-processing shield 23 of the heat insulation system S20; the exhaust pipe protective cover end cone cover 37 is arranged on the exhaust pipe protective cover 32, and the rain-proof pipe 39 is arranged on the exhaust pipe protective cover end cone cover 37 and is fixed through a rain-proof pipe hoop 38; the rainproof system S30 is connected with the post-treatment end taper pipe 13 of the tail gas post-treatment system S10 through the exhaust pipe 33 and fixed together through the exhaust pipe hoop 31; the rain protection system S30 is connected with the post-treatment shield 23 of the heat insulation system S20 through the exhaust pipe shield 32 and fixed together through the exhaust pipe shield hoop 30.
The rain-proof cap 36 is designed in a hollow conical shape, the diameter of the bottom of the conical surface is larger than the outer diameter of the exhaust pipe 33, the flow guiding cone 35 is designed in a hollow shape, the diameter of the bottom of the conical surface is smaller than the inner diameter of the exhaust pipe 33, a plurality of exhaust holes are formed in the pipe wall of the top end of the exhaust pipe 33, the conical angle of the flow guiding cone 35 is arranged downwards in the pipe opening of the exhaust pipe 33 and connected with the exhaust pipe 33 through welding, the conical angle of the rain-proof cap 36 is upwards covered on the pipe opening of the exhaust pipe 33 and used for preventing rain and snow from entering the exhaust pipe 33, the rain-proof cap 36 is connected with the flow guiding cone 35 through welding, the rain collector 34 is arranged on the outer side of the exhaust pipe 33 at the lower part of the rain-proof cap 36, the inner side of the rain collector 34 is connected with the exhaust pipe, under the guide of the diversion cone 35, the air flows out from the space between the diversion cone 35 and the rain collector 34 through a plurality of air vents on the pipe wall of the exhaust pipe 33, and the conical surface of the rain collector 34 is parallel to the conical surface of the diversion cone 35, so that the air flow resistance is reduced, and the air flow can smoothly pass through the rain collector.
As shown in fig. 4, the rain-proof pipe 39 includes a first straight pipe section 40, a transition pipe section 41, a second straight pipe section 42 and a rain-proof pipe section 43, the axis of the first straight pipe section 40 coincides with the axis of the exhaust pipe 33 and is connected with the exhaust pipe protective cover end cone cover 37, the axis of the second straight pipe section 42 is perpendicular to the axis of the exhaust pipe 33 and is connected with the first straight pipe section 40 through the transition section 41, the other end of the second straight pipe section 42 is connected with the rain-proof pipe section 43, the pipe orifice of the rain-proof pipe section 43 is inclined, the extension amount of the pipe wall at the upper end is larger than that of the pipe wall at the lower end, rainwater can be prevented from directly falling into the pipe orifice, the pipe wall at the lower end of the rain-proof pipe section 43 is also inclined downward, on one hand, rain and snow entering the.
Rain-proof system S30 has designed multiple protection, rain-proof pipe 39' S design effectively prevents sleet, the rainwater falls into inside the pipeline, still design rain-proof cap 36 and rain collector 34 in blast pipe 33 mouth of pipe department, rain-proof cap 36 can further prevent that the rainwater from falling into blast pipe 33 to can guide the rainwater to rain collector 34 through its conical surface, the rainwater through rain collector 34 whereabouts can not get into aftertreatment device, avoid the rainwater to get into and cause the influence to the performance of carrier, catalyst, liner.
The invention has reasonable design, compact structure, convenient disassembly and assembly and strong universality, can meet the requirements of different types of post-processing devices on heat insulation and rain prevention, on one hand, the surface temperature of the processing device can be effectively reduced under the condition of higher temperature after the vortex of the engine through the heat insulation and preservation device, and the heat dissipation capacity of the post-processing device can be reduced under the condition of lower temperature after the vortex of the engine, thereby improving the low-temperature performance of post-processing products; on the other hand, through rain-proof, can effectually prevent that the rainwater from getting into aftertreatment device, avoid the rainwater to get into and cause the influence to the performance of carrier, catalyst, liner.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a tractor is with tail gas aftertreatment device of taking rain-proof function of thermal-insulated heat preservation which characterized in that includes: the system comprises a tail gas post-treatment system, a heat insulation and preservation system and a rainproof system, wherein the tail gas post-treatment system comprises a post-treatment unit, a post-treatment V-shaped clamp and a post-treatment end vertebral canal, and the post-treatment unit and the post-treatment end vertebral canal are connected together through the post-treatment V-shaped clamp; the heat insulation and preservation system is arranged outside the tail gas post-treatment system and sequentially comprises a double-layer stainless steel knurled heat insulation and preservation device, a double-layer aluminum foil heat insulation and preservation device and a post-treatment protective cover, wherein the double-layer stainless steel knurled heat insulation and preservation device is connected with a post-treatment unit of the tail gas post-treatment system through welding; the double-layer aluminum foil heat insulation device is wrapped on the double-layer stainless steel knurled heat insulation device, and the post-treatment protective cover is arranged on the outer side of the double-layer aluminum foil heat insulation device and fixed on a base of the post-treatment unit; the rain-proof system includes blast pipe, blast pipe guard shield, the water conservancy diversion awl and the rain-proof cap at blast pipe top, the rain collector between blast pipe and the blast pipe guard shield and connect the rain-proof pipe on the blast pipe guard shield, and the rain-proof system is connected with tail gas aftertreatment end taper pipe through the blast pipe, and the blast pipe guard shield of rain-proof system is connected with thermal-insulated heat preservation system's aftertreatment protection casing.
2. The tail gas after-treatment device with heat insulation and rainproof functions for the tractor according to claim 1, wherein the exhaust pipe is mounted on the taper pipe at the after-treatment end and fixed through an exhaust pipe hoop; the exhaust pipe shield is arranged on the outer side of the exhaust pipe and is connected with the post-treatment protective cover through an exhaust pipe shield hoop; the exhaust pipe protection cover end cone cover is installed on the exhaust pipe protection cover, and the rain-proof pipe is installed on the exhaust pipe protection cover end cone cover and fixed through the rain-proof pipe hoop.
3. The tail gas after-treatment device with the functions of heat insulation, heat preservation and rain prevention for the tractor as claimed in claim 1, wherein the rain-proof cap is hollow conical, the diameter of the bottom of the conical surface of the rain-proof cap is larger than the outer diameter of the exhaust pipe, the diameter of the bottom of the flow guiding cone is hollow conical, the diameter of the bottom of the conical surface of the flow guiding cone is smaller than the inner diameter of the exhaust pipe, the cone angle of the flow guiding cone is downwards arranged inside the top end of the exhaust pipe and connected with the exhaust pipe through welding, the cone angle of the rain-proof cap upwards covers the top end of the exhaust pipe and connected with.
4. The tail gas after-treatment device with heat insulation and rainproof functions for the tractor according to claim 1, wherein the inner side of the rain collector is connected with the exhaust pipe through welding, the outer side of the rain collector is connected with the exhaust pipe shield, the upper part of the rain collector is provided with an inclined conical surface, and the conical angle of the rain collector conical surface is the same as that of the guide cone.
5. The tail gas aftertreatment device with heat insulation and rainproof functions for the tractor according to claim 1, wherein the rainproof pipe comprises a first straight pipe section, a transition pipe section, a second straight pipe section and a rainproof pipe section, the axis of the first straight pipe section coincides with the axis of the exhaust pipe and is connected with the end cone cover of the exhaust pipe protective cover, the axis of the second straight pipe section is perpendicular to the axis of the exhaust pipe and is connected with the first straight pipe section through the transition section, the other end of the second straight pipe section is connected with the rainproof pipe section, the pipe orifice of the rainproof pipe section is inclined, the extension amount of the pipe wall of the upper end of the rainproof pipe section is larger than that of the pipe wall of the lower end of the rainproof pipe section, and.
6. The exhaust gas after-treatment device with heat insulation and rainproof functions for the tractor according to claim 1, wherein the double-layer stainless steel knurled heat insulation and heat preservation device comprises an outer stainless steel thin plate, an inner stainless steel thin plate and heat preservation cotton, the heat preservation cotton is arranged between the outer stainless steel thin plate and the inner stainless steel thin plate, stainless steel knurled protrusions are arranged on the outer stainless steel thin plate and the inner stainless steel thin plate, the knurled protrusions face away from the heat preservation cotton, the double-layer stainless steel knurled heat insulation and heat preservation device is fixed on the after-treatment unit of the after-treatment system in a welding mode, and the stainless steel knurled protrusions on the inner stainless steel thin plate are in contact with the outer surface of the after-treatment unit of the after-treatment system.
7. The exhaust gas after-treatment device with heat insulation and rainproof functions for the tractor according to claim 1, wherein the after-treatment unit comprises one or more packaging units of an oxidation type catalytic converter DOC, a particulate filter DPF and a selective catalytic reduction device SCR, and when the after-treatment unit comprises more than two packaging units, the packaging units are connected together in a V-shaped clamp or flange connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207409.6A CN111237040B (en) | 2020-03-23 | 2020-03-23 | Tail gas aftertreatment device with heat insulation and rainproof functions for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010207409.6A CN111237040B (en) | 2020-03-23 | 2020-03-23 | Tail gas aftertreatment device with heat insulation and rainproof functions for tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111237040A true CN111237040A (en) | 2020-06-05 |
| CN111237040B CN111237040B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010207409.6A Active CN111237040B (en) | 2020-03-23 | 2020-03-23 | Tail gas aftertreatment device with heat insulation and rainproof functions for tractor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963292A (en) * | 2020-09-04 | 2020-11-20 | 郑逸 | Waterproof biological exhaust tube |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209040939U (en) * | 2018-10-15 | 2019-06-28 | 雷沃重工股份有限公司 | A kind of agricultural machinery exhaust elbow, tail-gas after treatment apparatus and farm machinery |
| CN212079441U (en) * | 2020-03-23 | 2020-12-04 | 洛阳拖拉机研究所有限公司 | Tractor is with tail gas aftertreatment device who takes thermal-insulated rain-proof function that keeps warm |
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2020
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209040939U (en) * | 2018-10-15 | 2019-06-28 | 雷沃重工股份有限公司 | A kind of agricultural machinery exhaust elbow, tail-gas after treatment apparatus and farm machinery |
| CN212079441U (en) * | 2020-03-23 | 2020-12-04 | 洛阳拖拉机研究所有限公司 | Tractor is with tail gas aftertreatment device who takes thermal-insulated rain-proof function that keeps warm |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963292A (en) * | 2020-09-04 | 2020-11-20 | 郑逸 | Waterproof biological exhaust tube |
| CN111963292B (en) * | 2020-09-04 | 2021-05-25 | 郑逸 | Waterproof biological exhaust tube |
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| Publication number | Publication date |
|---|---|
| CN111237040B (en) | 2024-04-19 |
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