CN220769576U - Exhaust pipe assembly for national six-fold card - Google Patents
Exhaust pipe assembly for national six-fold card Download PDFInfo
- Publication number
- CN220769576U CN220769576U CN202322294306.XU CN202322294306U CN220769576U CN 220769576 U CN220769576 U CN 220769576U CN 202322294306 U CN202322294306 U CN 202322294306U CN 220769576 U CN220769576 U CN 220769576U
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- exhaust pipe
- flanging
- bulge
- sealing gasket
- national
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- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 26
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 abstract description 10
- 238000011069 regeneration method Methods 0.000 abstract description 10
- 238000012805 post-processing Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Abstract
The utility model discloses an exhaust pipe assembly for a national six-fold card, which comprises an upstream exhaust pipe, a downstream exhaust pipe, a conical sealing gasket and a V-shaped clamp, wherein the upstream exhaust pipe is provided with a flanging structure, the downstream exhaust pipe is provided with a bulge structure, the conical sealing gasket is integrally attached to the flanging structure of the upstream exhaust pipe through gluing, the upstream exhaust pipe and the downstream exhaust pipe are connected through interference fit of the flanging structure and the bulge structure, the inner side of the conical sealing gasket is pressed with the bulge structure, and finally the V-shaped clamp is used for tightening, so that zero leakage in the exhaust pipe is realized. The utility model realizes the concentric assembly requirement of the conical sealing gasket and the exhaust pipe, solves the technical problem of regeneration failure of the national six-fold card post-processing system caused by tightness, and greatly improves the national six-fold card post-processing regeneration qualification rate.
Description
Technical Field
The utility model relates to an exhaust pipe assembly for a national six-fold card, and belongs to the technical field of post-treatment systems for the six-fold card.
Background
In order to promote the development of the automobile industry and improve the air quality, the pollutant emission standard (national sixth standard for short) of the motor vehicle in the sixth stage of China is implemented in the field of heavy truck so as to strengthen the pollution control work of the motor vehicle. Six emissions from domestic diesel engines are typically routed using EGR (Exhaust Gas Recirculation ) +doc (Diesel Oxidation Catalyst, oxidation catalytic converter) +dpf (Diesel Particulate Filter, particulate trap) +scr (Selective Catalytic Reduction ), where the DPF is used to reduce most of the particulate matter produced by the diesel engine. The DPF operates by flowing exhaust through a honeycomb-like bag-type particle trap, where the flow of air can pass through the walls and the particles are trapped in the bag. To avoid clogging failure due to excessive particulate in the DPF, the carbon particulates must be purged by active regeneration. In order to realize the active regeneration function, the temperature in the exhaust pipe is required to reach 600 ℃ for high-temperature oxidation of captured carbon particles. However, the existing exhaust pipe assembly results frequently have a regeneration failure phenomenon, and one of the main factors is that the exhaust pipe leaks smoke due to the fact that the concentricity of the assembly of the upstream exhaust pipe, the downstream exhaust pipe and the conical sealing gasket is poor, so that the temperature in the exhaust pipe is too low, and the active regeneration function cannot be successfully completed.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an exhaust pipe assembly for a national six-fold card aiming at the defects existing in the prior art.
In order to solve the technical problem, the utility model provides an exhaust pipe assembly for a national six-fold card, which comprises an upstream exhaust pipe, a downstream exhaust pipe, a conical sealing gasket and a V-shaped clamp, wherein the upstream exhaust pipe is provided with a flanging structure, the downstream exhaust pipe is provided with a bulge structure, the conical sealing gasket is integrally attached to the flanging structure of the upstream exhaust pipe through gluing, the upstream exhaust pipe and the downstream exhaust pipe are connected through interference fit of the flanging structure and the bulge structure, the inner side of the conical sealing gasket is pressed with the bulge structure, and finally the V-shaped clamp is used for tightening, so that zero leakage in the exhaust pipe is realized.
The inner diameter of the flanging starting point of the flanging structure is 1.2mm larger than the outer diameter of the pipe orifice of the bulge structure, so that the pipe orifice of the bulge structure can be ensured to be sleeved into the pipe orifice of the flanging structure; the diameter of the flanging terminal point of the flanging structure is smaller than the diameter of the crest of the bulge structure by 1mm, so that the flanging is not higher than the bulge after the flanging is pressed with the bulge.
The flanging pipe opening angle of the flanging structure is 109-110 degrees, and the bulge pipe opening angle of the bulge structure is 40-41 degrees, so that interference fit of the flanging and bulge angles is ensured.
The conical sealing gasket is provided with an inner conical surface and an outer conical surface, and the conical degree is 18-22 degrees; the outer conical surface is provided with non-setting adhesive; the outer diameter size is consistent with the outer diameter of a flanging pipe orifice of the flanging structure of the upstream exhaust pipe.
The V-shaped clamp is provided with a V-shaped groove, the angle of the V-shaped groove is 37-41 degrees, and the V-shaped groove is matched with the angles of the flanging structure and the bulge structure.
The beneficial effects are that: the utility model realizes the concentric assembly requirement of the conical sealing gasket and the exhaust pipe, solves the technical problem of regeneration failure of the national six-fold card post-processing system caused by tightness, and greatly improves the national six-fold card post-processing regeneration qualification rate.
Drawings
FIG. 1 is a schematic diagram of an explosion of a structure of the present utility model;
FIG. 2 is a schematic view of the structure of an upstream exhaust pipe according to the present utility model;
FIG. 3 is a schematic structural view of a flanging pipe orifice structure of the present utility model;
FIG. 4 is a schematic view of the downstream exhaust pipe of the present utility model;
FIG. 5 is a schematic structural view of a spout structure of a drum of the present utility model;
FIG. 6 is a schematic view of the conical gasket of the present utility model;
FIG. 7 is a schematic view of the structure of the V-shaped groove of the present utility model.
In the figure: 1. an upstream exhaust pipe; 2. a downstream exhaust pipe; 3. a conical gasket; 4. v-shaped clamp; 11. a flanging structure; 21. a drum lifting structure; 31. an inner conical surface; 32. an outer conical surface; 41. v-shaped groove.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-7, the utility model provides an exhaust pipe assembly for a national six-fold card, which comprises an upstream exhaust pipe 1, a downstream exhaust pipe 2, a conical sealing gasket 3 and a V-shaped clamp 4, wherein the upstream exhaust pipe 1 is provided with a flanging structure 11, the downstream exhaust pipe 2 is provided with a bulging structure 21, the conical sealing gasket 3 is integrally attached to the flanging structure 11 of the upstream exhaust pipe 1 through gluing, the upstream exhaust pipe 1 and the downstream exhaust pipe 2 are connected with the bulging structure 21 through interference fit of the flanging structure 11, the inner side of the conical sealing gasket 3 is pressed with the bulging structure 21, and finally the V-shaped clamp 4 is tightly pressed to realize zero leakage in the exhaust pipe; the conical sealing gasket 3 is required to be flat in surface and free of falling, meanwhile, for the convenience of installation, the self-adhesive is arranged on the outer conical surface, the conical degree of the conical sealing gasket is required to be matched with the conical degree of the bulge structure 21, and the outer diameter size of the conical sealing gasket is consistent with the outer diameter of the flanging pipe orifice.
The inner diameter of the flanging starting point of the flanging structure 11 is 1.2mm larger than the outer diameter of the pipe orifice of the bulge structure 21, so that the pipe orifice of the bulge structure 21 can be sleeved into the pipe orifice of the flanging structure 11; meanwhile, the diameter of the flanging terminal point of the flanging structure 11 is smaller than the diameter of the crest of the bulge structure 21 by 1mm, so that after the flanging and bulge are pressed, the flanging is not higher than the bulge, and sealing is prevented from being not tight.
The flanging pipe opening angle of the flanging structure 11 is 109-110 degrees, the drum-starting pipe opening angle of the drum-starting structure 21 is 40-41 degrees, and the interference fit of the flanging and the drum-starting angle is ensured.
The conical sealing gasket 3 is provided with an inner conical surface 31 and an outer conical surface 32, and the taper is 18-22 degrees; the outer conical surface 32 is provided with self-adhesive; the outer diameter size is consistent with the outer diameter of a flanging pipe orifice of the flanging structure 11 of the upstream exhaust pipe 1.
The V-shaped clamp 4 is provided with a V-shaped groove 41, and the angle of the V-shaped groove 41 is 37-41 degrees and is matched with the angles of the flanging structure 11 and the bulging structure 21.
The assembly process of the utility model comprises the following steps:
(1) The taper gauge of the exhaust pipe orifice is used for checking the taper size and angle of the exhaust pipe to be assembled, the taper standard exhaust pipe is selected for subsequent assembly, the taper size and angle of the exhaust pipe are ensured to meet the specified requirements, and the product consistency requirement is met;
(2) Tearing off the white protective film on the gluing surface of the conical sealing gasket 3;
(3) The upstream exhaust pipe 1 and the conical sealing gasket 3 are concentrically assembled, so that the gluing surface of the conical sealing gasket 3 is ensured to be pasted smoothly and firmly with the inner side of the flanging pipe orifice of the upstream exhaust pipe 1, and the axial alignment of the conical sealing gasket and the upstream exhaust pipe is realized;
(4) Concentric assembly of the upstream exhaust pipe 1 and the downstream exhaust pipe 2 is realized by means of a bulge structure and a flanging structure of pipe orifices of the two exhaust pipes;
(5) And (5) installing and tightening the V-shaped clamp 4 to complete the assembly of the exhaust pipe assembly for the national six-fold card.
The utility model optimizes the assembly quality of the exhaust pipe of the national six-fold card by innovating an assembly structure and a curing assembly process, realizes the concentric assembly requirement of the conical sealing gasket and the exhaust pipe, solves the technical problem of regeneration failure caused by tightness of the aftertreatment system of the national six-fold card, and greatly improves the aftertreatment regeneration qualification rate of the national six-fold card.
The above-described embodiments of the utility model are intended to be examples only, and not to be limiting, and all changes that come within the scope of the utility model or equivalents thereto are intended to be embraced thereby.
Claims (3)
1. The utility model provides an exhaust pipe assembly for six-fold card which characterized in that: the novel exhaust pipe comprises an upstream exhaust pipe (1), a downstream exhaust pipe (2), a conical sealing gasket (3) and a V-shaped clamp (4), wherein the upstream exhaust pipe (1) is provided with a flanging structure (11), the downstream exhaust pipe (2) is provided with a bulge structure (21), the outer side of the conical sealing gasket (3) is integrally attached to the flanging structure (11) of the upstream exhaust pipe (1) through gluing, the upstream exhaust pipe (1) and the downstream exhaust pipe (2) are connected through interference fit of the flanging structure (11) and the bulge structure (21), the inner side of the conical sealing gasket (3) is pressed with the bulge structure (21), and finally the bulge structure (21) is tightly pressed through the V-shaped clamp (4), so that zero leakage in the exhaust pipe is realized; the inner diameter of the flanging starting point of the flanging structure (11) is 1.2mm larger than the outer diameter of the pipe orifice of the bulge structure (21), so that the pipe orifice of the bulge structure (21) can be sleeved into the pipe orifice of the flanging structure (11); the diameter of the flanging end point of the flanging structure (11) is smaller than the diameter of the bulge structure (21) by 1mm, so that the flanging is not higher than the bulge after the flanging is pressed with the bulge; the flanging pipe opening angle of the flanging structure (11) is 109-110 degrees, the drum-starting pipe opening angle of the drum-starting structure (21) is 40-41 degrees, and interference fit of the flanging and the drum-starting angle is ensured.
2. The exhaust pipe assembly for a national six-fold card according to claim 1, wherein: the conical sealing gasket (3) is provided with an inner conical surface (31) and an outer conical surface (32), and the taper is 18-22 degrees; the outer conical surface (32) is provided with self-adhesive; the outer diameter size is consistent with the outer diameter of a flanging pipe orifice of the flanging structure (11) of the upstream exhaust pipe (1).
3. The exhaust pipe assembly for a national six-fold card according to claim 1 or 2, characterized in that: the V-shaped clamp (4) is provided with a V-shaped groove (41), and the angle of the V-shaped groove (41) is 37-41 degrees and is matched with the angles of the flanging structure (11) and the bulge structure (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322294306.XU CN220769576U (en) | 2023-08-25 | 2023-08-25 | Exhaust pipe assembly for national six-fold card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322294306.XU CN220769576U (en) | 2023-08-25 | 2023-08-25 | Exhaust pipe assembly for national six-fold card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769576U true CN220769576U (en) | 2024-04-12 |
Family
ID=90615043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322294306.XU Active CN220769576U (en) | 2023-08-25 | 2023-08-25 | Exhaust pipe assembly for national six-fold card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769576U (en) |
-
2023
- 2023-08-25 CN CN202322294306.XU patent/CN220769576U/en active Active
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