CN210622909U - Commercial vehicle postprocessor and heat shield thereof - Google Patents
Commercial vehicle postprocessor and heat shield thereof Download PDFInfo
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- CN210622909U CN210622909U CN201921094830.XU CN201921094830U CN210622909U CN 210622909 U CN210622909 U CN 210622909U CN 201921094830 U CN201921094830 U CN 201921094830U CN 210622909 U CN210622909 U CN 210622909U
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Abstract
The utility model relates to a commercial vehicle postprocessor and a heat shield thereof, wherein the postprocessor comprises a shell, a front end cover assembly, a rear end cover assembly, an air inlet pipe, an air outlet pipe, a nozzle seat, a clapboard, a carrier, a mixer and a silencing pipe; the front end cover assembly is arranged at the front end of the shell in a matching way, and the rear end cover assembly is arranged at the rear end of the shell in a matching way; the nozzle seat is arranged on the air inlet pipe in a matching way; the clapboard, the carrier, the mixer and the silencing pipe are arranged in the shell in a matching way; the aftertreatment device further includes a heat shield; the heat insulation cover adopts a three-section type heat insulation cover and is arranged outside the shell in a matching way; glass fiber cotton is filled between the heat shield and the shell; the outer surface of the heat shield is also uniformly raised with reinforcing ribs, and the inner sides of the reinforcing ribs are matched and filled with reinforcing rib profiling heat insulation cotton. The utility model has the advantages of simple and reasonable design, it is thermal-insulated good with the performance of making an uproar to fall, can avoid the heat of radiation to cause the influence and can reduce engine exhaust noise to other original papers, reaches the insertion loss index of requirement.
Description
Technical Field
The utility model relates to a vehicle aftertreatment ware technical field, concretely relates to commercial car aftertreatment ware and separate heat exchanger thereof.
Background
The basic working principle of the post-processor is that the combustion process in a cylinder of the diesel engine is optimized, so that the emissions of carbon monoxide (CO), Hydrocarbon (HC), Particles (PM) and the like in the combustion exhaust gas are effectively controlled and meet the requirements of regulations, and finally, nitrogen oxides (NOx) with high content in the exhaust gas discharged by the engine are treated by a special vehicle-mounted post-treatment system so as to meet the requirements of the regulations. During the post-treatment process, the dosing unit can accurately inject the urea amount matched with the operation condition of the engine into the exhaust pipe according to the instruction given by the electronic control unit of the engine, and the ammonia and the nitrogen oxides decomposed from the urea are subjected to catalytic reduction reaction in the catalyst to finally generate harmless nitrogen (N2) and water (H2O). It has been determined that the conversion of nitrogen oxides by SCR exhaust aftertreatment systems can typically reach over 60%. Because the urea tank and the post-processor adopt an up-down stacking structure, the urea tank is arranged above the post-processor, the inlet temperature of the post-processor is about 350 ℃, the surface temperature of the post-processor can reach 500 ℃ at most, and the radiation heat can cause the temperature rise of accessory elements of the urea tank and urea in the urea tank to influence the normal work of a urea injection system, therefore, the post-processor is required to cover a heat insulation layer to ensure that the temperature of the urea liquid in the urea tank does not exceed 50 ℃. However, although the existing post-processor is designed and treated with simple heat insulation, the actual requirement can not be met, and therefore, the improvement of the existing post-processor product is needed.
Disclosure of Invention
To the problem that exists among the above-mentioned background art, the utility model provides a structural design is simple, reasonable, and thermal-insulated and the performance of making an uproar is good with falling, can avoid the heat of radiation to cause the influence and can reduce engine exhaust noise other original papers, reaches the commercial car postprocessor of the insertion loss index of requirement and separates heat exchanger thereof.
The utility model discloses a realize through following technical scheme:
the commercial vehicle postprocessor comprises a shell, a front end cover assembly, a rear end cover assembly, an air inlet pipe, an air outlet pipe, a nozzle seat, a partition plate, a carrier, a mixer and a silencing pipe; the front end cover assembly is mounted at the front end of the shell in a matching manner, and the rear end cover assembly is mounted at the rear end of the shell in a matching manner; the nozzle seat is mounted on the air inlet pipe in a matching manner; the clapboard, the carrier, the mixer and the silencing pipe are arranged in the shell in a matching way; the aftertreatment device further comprises a heat shield; the heat insulation cover adopts a three-section type heat insulation cover and is covered outside the shell in a matching way; glass fiber cotton is filled between the heat shield and the shell; the outer surface of the heat shield is evenly provided with reinforcing ribs in a protruding mode, and reinforcing rib profiling heat insulation cotton is filled on the inner sides of the reinforcing ribs in a matched mode.
The commercial car aftertreatment ware, wherein: the heat insulation cover comprises a first heat insulation shell, a second heat insulation shell and a third heat insulation shell, wherein the matching cover is arranged on the outer side of the upper part of the shell, the matching cover is arranged on the outer side of the left lower part of the shell, and the matching cover is arranged on the outer side of the right lower part of the shell; and the areas of the first heat insulation shell, the second heat insulation shell and the third heat insulation shell, which are positioned outside the reinforcing ribs, are fixed through assembling bands or brackets.
The commercial car aftertreatment ware, wherein: the front end cover assembly comprises a front inner lining plate, a front end cover and front end cover profiling heat insulation cotton; the front inner lining plate is vertically arranged on the inner side of the front end of the shell in a matching way; the front end cover is mounted on the outer side of the front end of the shell in a matching manner; the front end cover profiling heat insulation cotton is filled between the front inner lining plate and the front end cover in a matching manner; the rear end cover assembly comprises a rear lining plate, a rear end cover and rear end cover profiling heat insulation cotton; the rear lining plate is vertically arranged on the inner side of the rear end of the shell in a matching manner; the rear end cover is mounted on the outer side of the rear end of the shell in a matching manner; and the rear end cover profiling heat insulation cotton is filled between the rear inner lining plate and the rear end cover in a matching manner.
The commercial car aftertreatment ware, wherein: the outer surface of the front end cover is of an arc structure, and the center of the outer surface is inwards sunken.
The commercial car aftertreatment ware, wherein: the air inlet pipe is arranged above the side wall of the front end of the shell in a matching manner, one end of the air inlet pipe extends into the inner cavity of the shell, and the other end of the air inlet pipe extends out of the shell and is connected with a tail pipe of an engine in a matching manner; the nozzle seat is installed on the upper portion of one end, extending out of the shell, of the air inlet pipe in a matched mode.
The commercial car aftertreatment ware, wherein: the end part of one end of the air inlet pipe, which extends out of the outer side of the shell, is connected with the tail pipe of the engine in a matching mode through a hoop.
The commercial car aftertreatment ware, wherein: the air outlet pipe is positioned at the front end part of the shell and is horizontally arranged on the lower side of the front end cover in a matching manner; one end of the air outlet pipe penetrates through the front end cover assembly and extends into the inner cavity of the shell, and the other end of the air outlet pipe horizontally extends towards the outer side of the front end cover and is connected with a tail pipe of the vehicle in a matching mode.
The commercial car aftertreatment ware, wherein: the end part of one end of the air outlet pipe, which extends out of the shell, is connected with a tail pipe of the vehicle in a matching way through a hoop; and a support is fixedly connected between the outer wall of the lower part of the pipe body at one end of the air outlet pipe extending out of the outer side of the shell and the outer wall of the front end cover.
The heat shield of the commercial vehicle postprocessor adopts a three-section type heat shield and a matching shield arranged outside a shell of the postprocessor; glass fiber cotton is filled between the heat shield and the shell; the outer surface of the heat shield is evenly provided with reinforcing ribs in a protruding mode, and reinforcing rib profiling heat insulation cotton is filled on the inner sides of the reinforcing ribs in a matched mode.
The heat exchanger that separates of commercial car aftertreatment ware, wherein: the heat insulation cover comprises a first heat insulation shell, a second heat insulation shell and a third heat insulation shell, wherein the matching cover is arranged on the outer side of the upper part of the shell, the matching cover is arranged on the outer side of the left lower part of the shell, and the matching cover is arranged on the outer side of the right lower part of the shell; and the areas of the first heat insulation shell, the second heat insulation shell and the third heat insulation shell, which are positioned outside the reinforcing ribs, are fixed through assembling bands or brackets.
Has the advantages that:
the utility model discloses commercial car aftertreatment ware and separate heat exchanger structural design is simple, reasonable, and thermal-insulated and the performance of making an uproar of falling can be good, can effectively reduce aftertreatment ware surface temperature, avoids the heat of radiation to cause the influence to other original papers around it, and can reduce engine exhaust noise, reaches the insertion loss index of requirement.
The specific advantages include the following aspects:
(1) the shell is covered with the three-section type heat shield, glass fiber cotton is filled between the shell and the heat shield, the shell and the filled glass fiber cotton form a three-layer heat insulation layer, and radiation heat of the postprocessor is effectively reduced. Because of the structural particularity of the product, the surface of the heat shield is provided with the raised reinforcing ribs, the strength of the heat shield is improved, the inner sides of the reinforcing ribs are filled with heat insulation cotton for reducing the temperature of the cylinder body of the post processor, and the surface temperature of the post processor is not higher than 110 ℃.
(2) The front end cover assembly and the rear end cover assembly are of a double-layer structure, the front end cover assembly is composed of a front end cover, a front inner lining plate and front end cover copying heat insulation cotton filled between the front end cover and the front inner lining plate, the rear end cover assembly is composed of a rear end cover, a rear inner lining plate and rear end cover copying heat insulation cotton filled between the rear end cover and the rear inner lining plate, heat insulation and noise reduction performance of a post processor can be improved, and the temperature of the outer surface of the front end cover and the temperature of the outer surface of the rear end cover are not higher than 130 ℃.
(3) The heat shield is assembled and fixed in other areas except the reinforcing ribs through the belt bands or the brackets, the surface temperature of the heat shield is not higher than 220 ℃, the heat insulation cotton can absorb noise generated when the postprocessor works, and the noise reduction performance is improved.
(4) The outer surface of the front end cover is surrounded by an arc-shaped structure, and the center of the outer surface is inwards sunken, so that the front end cover can be prevented from interfering with a spring steel plate on a frame.
(5) The three-section heat shield is adopted, the volume of each section of heat shield is smaller, a smaller die can be adopted, the three sections of heat shields have similar shapes, and the three sections of heat shields can be manufactured conveniently by using partially same dies.
Drawings
FIG. 1 is a schematic view of the overall structure of the commercial vehicle post processor of the present invention;
FIG. 2 is a front view of the utility model commercial vehicle post processor;
FIG. 3 is a top view of the commercial vehicle aftertreatment device of the present invention;
FIG. 4 is a left side view of the utility model of a commercial vehicle aftertreatment device;
FIG. 5 is a right side view of the utility model of a commercial vehicle aftertreatment device;
FIG. 6 is an exploded view of the commercial vehicle post processor of the present invention;
fig. 7 is another exploded view of the utility model of the commercial vehicle post processor.
Detailed Description
As shown in fig. 1 to 7, the utility model discloses commercial car aftertreatment ware, including casing 1, front end housing assembly 2, rear end housing assembly 3, intake pipe 4, outlet duct 5, nozzle holder 6, separate heat exchanger 7, baffle, carrier, blender and hush pipe.
The housing 1 has an accommodating space therein; the partition board is vertically arranged in the inner cavity of the shell 1 and divides the inner cavity of the shell 1 into a front cavity, a middle cavity and a rear cavity; the carrier, the muffler pipe and the mixer are arranged in the inner cavity of the shell 1 in a matching way and are supported by a clapboard.
The front end cover assembly 2 is mounted at the front end of the shell 11 in a matching way, and comprises a front lining plate 21, a front end cover 22 and front end cover profiling heat insulation cotton 23; wherein, the front lining plate 21 is vertically mounted on the front end of the housing 11 in a matching manner and is located inside the front end of the housing 11; the front end cover 22 is fittingly mounted on the front end of the housing 11 and fittingly located outside the front end of the housing 11; the front end cover profiling heat insulation cotton 23 is matched and filled between the front inner lining plate 21 and the front end cover 22. The surface of the front end cover 22 adopts a conventional arc-shaped structure which is independently researched and developed, and the center of the outer side surface is inwards concave, so that the front end cover 22 can be prevented from interfering with a spring steel plate on a frame; front end cover profiling heat insulation cotton 23 is filled between the front end cover 22 and the front inner lining plate 21, so that the heat insulation and noise reduction performance of the postprocessor can be improved, and the temperature of the outer surface of the front end cover 22 is not higher than 130 ℃; the upper part and the middle part of the outer side surface of the front end cover 22 are also fixedly provided with an assembling bracket 221.
The rear end cap assembly 3 is mounted at the rear end of the shell 11 in a matching manner, and comprises a rear lining plate 31, a rear end cap 32 and rear end cap profiling heat insulation cotton 33; wherein, the rear lining plate 31 is vertically mounted at the rear end of the housing 11 and is located inside the rear end of the housing 11; the rear end cover 32 is mounted at the rear end of the housing 11 in a matching manner and is located outside the rear end of the housing 11 in a matching manner; the rear end cover profiling heat insulation cotton 33 is matched and installed between the rear inner lining plate 31 and the rear end cover 32. The rear end cover assembly 3 is formed by filling rear end cover profiling heat insulation cotton 33 between a rear end cover 32 and a rear inner lining plate 31, the heat insulation and noise reduction performance of the post processor can be improved, and the temperature of the outer surface of the rear end cover 32 is not higher than 130 ℃.
The air inlet pipe 4 is arranged above the side wall of the front end of the shell 1 in a matching way, one end of the air inlet pipe extends into the inner cavity of the shell 1, the other end of the air inlet pipe protrudes to the outer side of the shell 1, and the end part of the air inlet pipe is connected with the tail pipe of the engine through a hoop; the nozzle holder 6 is fittingly mounted to an upper portion of an end of the intake pipe 4 extending outside the housing 1.
The air outlet pipe 4 is positioned at the front end part of the shell 1 and is matched and arranged at the lower side of the front end cover 22 of the front end cover assembly 2; one end of the air outlet pipe 4 penetrates through the front end cover assembly 2 and extends into the inner cavity of the shell 1, and the other end of the air outlet pipe horizontally extends out of the outer side of a front end cover 22 of the front end cover assembly 2 and is connected with a tail pipe of a vehicle through a clamp. The air outlet pipe 5 extends out of the outer wall of the lower part of the pipe body at one end outside the shell 1 and is fixedly connected with a support 41 between the outer wall of the front end cover 22 of the front end cover assembly 2, the air outlet pipe 4 is fixed by the support 41, the strength of the connecting part of the air outlet pipe 4 and the front end cover 22 is improved, and the connecting part of the air outlet pipe 44 and the front end cover 22 is prevented from being broken.
The heat shield 7 adopts a three-section type heat shield, the volume of each section of heat shield 7 is small, a small mould can be adopted, the three sections of heat shields 7 have similar shapes, and partial same moulds can be used. The heat shield 7 is disposed outside the casing 1 in a matching manner, and includes a first heat-insulating casing 71 disposed outside the upper portion of the casing 1 in a matching manner, a second heat-insulating casing 72 disposed outside the left lower portion of the casing 1 in a matching manner, and a third heat-insulating casing 73 disposed outside the right lower portion of the casing 1 in a matching manner. Glass fiber wool is filled between the heat shield 7 (or the first heat insulation shell 71, the second heat insulation shell 72 and the third heat insulation shell 73) and the shell 1, and a plurality of reinforcing ribs 74 are protruded on the outer surface of the heat shield 7 (or the first heat insulation shell 71, the second heat insulation shell 72 and the third heat insulation shell 73), so that the strength of the heat shield 7 is improved; reinforcing rib profiling heat insulation cotton 741 is filled in each reinforcing rib 74 and used for reducing the temperature of the post-processor cylinder. The heat shield 7 is fixed to the region outside the rib 74 by a mounting band or bracket. The post-processor forms a three-layer heat insulation layer through the heat insulation cover 7, the shell 1 and the reinforcing rib profiling heat insulation cotton 741, so that the radiation heat of the post-processor is effectively reduced, the reinforcing rib profiling heat insulation cotton 741 can absorb the noise generated during the operation of the post-processor, and the noise reduction performance is improved. Due to the structural particularity of the product, heat insulation cotton is filled in the inner part area of the heat insulation cover 7, namely the inner side surface of the reinforcing rib 74, and the surface temperature of the heat insulation cotton is not higher than 110 ℃; the other areas than the reinforcing ribs 74 need to be provided with a band or a bracket, and the inner side of the heat shield 7 cannot be filled with heat insulation cotton, and the surface temperature of the heat shield is not higher than 220 ℃.
The utility model discloses commercial car aftertreatment ware is applicable to dCi11 national five 450 horsepower engine, and the outward appearance accords with "DFCVCJ 2008-2013" requirement; insertion loss: the rated torque is more than or equal to 20dB (A); exhaust back pressure: is less than or equal to 12KPa under rated working condition; sealing property: the pressure is 0.3bar, and the leakage amount is not more than 5L/min; emission performance: the emission performance meets the requirements of GB17691-2005 and HJ 451-2008; the durability meets the requirements of GB20890-2007 and HJ 438-2008. The test proves that: the utility model discloses commercial car aftertreatment ware has conversion efficiency height, and the noise cancelling effect is good, and exhaust backpressure is low, characteristics that power loss is little.
The utility model has the advantages of simple and reasonable design, it is thermal-insulated good with the performance of making an uproar to fall, can avoid the heat of radiation to cause the influence and can reduce engine exhaust noise to other original papers, reaches the insertion loss index of requirement.
Claims (10)
1. A commercial vehicle postprocessor comprises a shell, a front end cover assembly, a rear end cover assembly, an air inlet pipe, an air outlet pipe, a nozzle seat, a partition plate, a carrier, a mixer and a silencing pipe; the front end cover assembly is mounted at the front end of the shell in a matching manner, and the rear end cover assembly is mounted at the rear end of the shell in a matching manner; the nozzle seat is mounted on the air inlet pipe in a matching manner; the clapboard, the carrier, the mixer and the silencing pipe are arranged in the shell in a matching way; the method is characterized in that: the aftertreatment device further comprises a heat shield; the heat insulation cover adopts a three-section type heat insulation cover and is covered outside the shell in a matching way; glass fiber cotton is filled between the heat shield and the shell; the outer surface of the heat shield is evenly provided with reinforcing ribs in a protruding mode, and reinforcing rib profiling heat insulation cotton is filled on the inner sides of the reinforcing ribs in a matched mode.
2. The commercial vehicle aftertreatment device of claim 1, wherein: the heat insulation cover comprises a first heat insulation shell, a second heat insulation shell and a third heat insulation shell, wherein the matching cover is arranged on the outer side of the upper part of the shell, the matching cover is arranged on the outer side of the left lower part of the shell, and the matching cover is arranged on the outer side of the right lower part of the shell; and the areas of the first heat insulation shell, the second heat insulation shell and the third heat insulation shell, which are positioned outside the reinforcing ribs, are fixed through assembling bands or brackets.
3. The commercial vehicle aftertreatment device of claim 1, wherein: the front end cover assembly comprises a front inner lining plate, a front end cover and front end cover profiling heat insulation cotton; the front inner lining plate is vertically arranged on the inner side of the front end of the shell in a matching way; the front end cover is mounted on the outer side of the front end of the shell in a matching manner; the front end cover profiling heat insulation cotton is filled between the front inner lining plate and the front end cover in a matching manner;
the rear end cover assembly comprises a rear lining plate, a rear end cover and rear end cover profiling heat insulation cotton; the rear lining plate is vertically arranged on the inner side of the rear end of the shell in a matching manner; the rear end cover is mounted on the outer side of the rear end of the shell in a matching manner; and the rear end cover profiling heat insulation cotton is filled between the rear inner lining plate and the rear end cover in a matching manner.
4. The commercial vehicle aftertreatment device of claim 1, wherein: the outer surface of the front end cover is of an arc structure, and the center of the outer surface is inwards sunken.
5. The commercial vehicle aftertreatment device of claim 1, wherein: the air inlet pipe is arranged above the side wall of the front end of the shell in a matching manner, one end of the air inlet pipe extends into the inner cavity of the shell, and the other end of the air inlet pipe extends out of the shell and is connected with a tail pipe of an engine in a matching manner; the nozzle seat is installed on the upper portion of one end, extending out of the shell, of the air inlet pipe in a matched mode.
6. The commercial vehicle aftertreatment device of claim 5, wherein: the end part of one end of the air inlet pipe, which extends out of the outer side of the shell, is connected with the tail pipe of the engine in a matching mode through a hoop.
7. The commercial vehicle aftertreatment device of claim 1, wherein: the air outlet pipe is positioned at the front end part of the shell and is horizontally arranged on the lower side of the front end cover in a matching manner; one end of the air outlet pipe penetrates through the front end cover assembly and extends into the inner cavity of the shell, and the other end of the air outlet pipe horizontally extends towards the outer side of the front end cover and is connected with a tail pipe of the vehicle in a matching mode.
8. The commercial vehicle aftertreatment device of claim 7, wherein: the end part of one end of the air outlet pipe, which extends out of the shell, is connected with a tail pipe of the vehicle in a matching way through a hoop;
and a support is fixedly connected between the outer wall of the lower part of the pipe body at one end of the air outlet pipe extending out of the outer side of the shell and the outer wall of the front end cover.
9. The utility model provides a thermal shroud of commercial car aftertreatment ware which characterized in that: the heat insulation cover adopts a three-section type heat insulation cover and is arranged outside the shell of the postprocessor in a matching way; glass fiber cotton is filled between the heat shield and the shell; the outer surface of the heat shield is evenly provided with reinforcing ribs in a protruding mode, and reinforcing rib profiling heat insulation cotton is filled on the inner sides of the reinforcing ribs in a matched mode.
10. The heat shield for a commercial vehicle aftertreatment device of claim 9, wherein: the heat insulation cover comprises a first heat insulation shell, a second heat insulation shell and a third heat insulation shell, wherein the matching cover is arranged on the outer side of the upper part of the shell, the matching cover is arranged on the outer side of the left lower part of the shell, and the matching cover is arranged on the outer side of the right lower part of the shell; and the areas of the first heat insulation shell, the second heat insulation shell and the third heat insulation shell, which are positioned outside the reinforcing ribs, are fixed through assembling bands or brackets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921094830.XU CN210622909U (en) | 2019-07-14 | 2019-07-14 | Commercial vehicle postprocessor and heat shield thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921094830.XU CN210622909U (en) | 2019-07-14 | 2019-07-14 | Commercial vehicle postprocessor and heat shield thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210622909U true CN210622909U (en) | 2020-05-26 |
Family
ID=70762221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921094830.XU Active CN210622909U (en) | 2019-07-14 | 2019-07-14 | Commercial vehicle postprocessor and heat shield thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210622909U (en) |
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2019
- 2019-07-14 CN CN201921094830.XU patent/CN210622909U/en active Active
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