CN110792499A - Exhaust pipeline sealing structure - Google Patents
Exhaust pipeline sealing structure Download PDFInfo
- Publication number
- CN110792499A CN110792499A CN201911100458.3A CN201911100458A CN110792499A CN 110792499 A CN110792499 A CN 110792499A CN 201911100458 A CN201911100458 A CN 201911100458A CN 110792499 A CN110792499 A CN 110792499A
- Authority
- CN
- China
- Prior art keywords
- sealing gasket
- exhaust
- exhaust pipe
- exhaust pipeline
- boss
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 238000012856 packing Methods 0.000 claims 2
- 239000002912 waste gas Substances 0.000 abstract description 3
- 229910001369 Brass Inorganic materials 0.000 description 6
- 239000010951 brass Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1827—Sealings specially adapted for exhaust systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses an exhaust pipeline sealing structure which comprises a front exhaust pipeline and a rear exhaust pipeline, wherein a sealing gasket is arranged between the front exhaust pipeline and the rear exhaust pipeline, a connecting hoop is arranged on the front exhaust pipeline and the rear exhaust pipeline and is arranged at the periphery of the front exhaust pipeline and the rear exhaust pipeline, a sealing gasket boss is arranged on the rear exhaust pipeline, and the sealing gasket is abutted against the sealing gasket boss. The invention has the advantages that the sealing gasket is not directly contacted with severe high-temperature and high-pressure waste gas, so that the sealing gasket is reliable and does not generate radial deformation, and the conditions of resistance rise and oil consumption rise are not caused.
Description
Technical Field
The invention relates to the technical field of engine exhaust systems, in particular to an exhaust pipeline sealing structure.
Background
At present, when an automobile runs, an exhaust channel is filled with engine exhaust gas with high temperature and high pressure, particularly when an exhaust brake valve works, the pressure in the exhaust channel is up to 450Kpa, and a sealing gasket made of brass material is in direct contact with the exhaust gas.
The sealing structure between the front pipeline and the rear pipeline of the existing generally-adopted exhaust is shown in figure 2, the connectors of the front exhaust pipeline and the rear exhaust pipeline adopt conical surface structures, the tightening force through the clamps generates axial force, the sealing gasket between the two pipelines is compressed, the existing sealing gasket mostly adopts a brass gasket, the material is soft, and the small axial deformation obtained by compression can form good sealing to achieve the sealing effect. The sealing gasket is arranged in the airflow channel, and positioning bosses are arranged at two ends of the sealing gasket and are respectively matched with the exhaust pipes at two ends.
Under the impact of severe high-temperature and high-pressure airflow, the brass sealing gasket is easy to deform, the brass sealing gasket shrinks towards the center, the outer side sealing surface fails, and the phenomenon of air leakage occurs. Further, the brass gasket shrinks toward the center, which causes a rapid increase in exhaust resistance and increases fuel consumption. Moreover, the sealing gasket of the existing sealing structure is easy to drop during assembly, so that the installation is inconvenient.
Disclosure of Invention
The invention aims to solve the problems and provides an exhaust pipeline sealing structure, wherein a sealing gasket of the exhaust pipeline sealing structure cannot fall off, is convenient to install, is reliable and does not generate radial deformation, and cannot cause the conditions of resistance rise and oil consumption rise.
In order to achieve the purpose, the exhaust pipeline sealing structure comprises a front exhaust pipeline and a rear exhaust pipeline, wherein a sealing gasket is arranged between the front exhaust pipeline and the rear exhaust pipeline, connecting hoops are arranged on the front exhaust pipeline and the rear exhaust pipeline and are arranged on the periphery of the front exhaust pipeline and the periphery of the rear exhaust pipeline, a sealing gasket boss is arranged on the rear exhaust pipeline, and the sealing gasket abuts against the sealing gasket boss.
Further, the sealing gasket boss is arranged in the direction of the front exhaust pipeline, and the sealing gasket boss abuts against the front exhaust pipeline. Therefore, a closed exhaust pipeline is formed by sealing the front exhaust pipeline, the sealing gasket boss and the front exhaust pipeline, and the exhaust gas of the engine in the exhaust pipeline is ensured not to be leaked.
Further, the gasket boss is arranged on the inner periphery of the rear exhaust pipeline, and the inner periphery of the gasket abuts against the outer periphery of the gasket boss. Therefore, the sealing gasket is arranged on the sealing gasket boss, so that the sealing gasket is not easy to fall off and is convenient to mount.
Further, the inner periphery of the front exhaust pipe abuts against the outer periphery of the gasket boss. Thus, a closed space is formed by the front exhaust pipe, the seal boss and the front exhaust pipe, and the seal is arranged in the closed space so as not to be directly contacted with the bad high-temperature high-pressure exhaust gas.
As a preferred option, be equipped with preceding pressure platform on the preceding exhaust pipe, be equipped with back pressure platform on the back exhaust pipe, be equipped with the indent on the connection clamp, preceding pressure platform and back pressure platform set up in the indent. Therefore, a completely sealed space is formed among the front exhaust pipeline, the sealing gasket boss, the front exhaust pipeline and the connecting clamp, and the sealing gasket is arranged in the sealed space, so that the sealing gasket can be fixed, and the working environment of the sealing gasket can be more stable.
Preferably, a clamp buckle is arranged on the connecting clamp. Like this, can more conveniently press the platform and press the bench with the back with connecting the clamp card through the clamp knot before.
Preferably, the front pressing table is of a wedge-shaped structure. Thus, the front platen can cooperate with the press groove of the connector clip to compress the gasket.
Preferably, the rear pressing table is of a wedge-shaped structure. Thus, the rear platen can cooperate with the press groove of the connector clip to compress the gasket.
Preferably, the indent is a trumpet-shaped opening, and the indent cooperates with the front platen and the rear platen for compression. Thus, the press groove of the connector clip can be respectively matched with the front press table and the rear press table to compress the sealing gasket.
Preferably, the tops of the front pressing table and the rear pressing table are provided with flat tops. Thus, when the flat top engages the bottom of the indent, it indicates that the connector clip is in place.
The invention has the advantages that the sealing gasket is not directly contacted with severe high-temperature and high-pressure waste gas, so that the sealing gasket is reliable and does not generate radial deformation, and the conditions of resistance rise and oil consumption rise are not caused.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is a schematic diagram of a prior art structure mentioned in the background art.
In the figure: the exhaust pipe comprises a front exhaust pipeline 1, a rear exhaust pipeline 2, a sealing gasket 3, a connecting hoop 4 (wherein, the hoop is buckled with 4.1), a sealing gasket boss 5, a front pressure platform 6, a rear pressure platform 7 and a pressure groove 8.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1 an exhaust pipe seal structure, including preceding exhaust pipe 1 and back exhaust pipe 2, be equipped with sealed pad 3 between preceding exhaust pipe 1 and the back exhaust pipe 2, be equipped with on preceding exhaust pipe 1 and the back exhaust pipe 2 and connect clamp 4, connect clamp 4 and set up in the periphery of preceding exhaust pipe 1 and back exhaust pipe 2, be equipped with sealed pad boss 5 on the back exhaust pipe 2, sealed pad 3 with sealed pad boss 5 near. The sealing gasket boss 5 is arranged in the direction of the front exhaust pipeline 1, and the sealing gasket boss 5 is abutted against the front exhaust pipeline 1. The sealing gasket boss 5 is arranged on the inner periphery of the rear exhaust pipeline 2, and the inner periphery of the sealing gasket 3 is abutted against the outer periphery of the sealing gasket boss 5. The inner circumference of the front exhaust pipeline 1 is abutted against the outer circumference of the gasket boss 5. Be equipped with preceding pressure platform 6 on the preceding exhaust pipe 1, be equipped with back pressure platform 7 on the back exhaust pipe 2, be equipped with indent 8 on the connection clamp 4, preceding pressure platform 6 and back pressure platform 7 set up in indent 8. And a clamp buckle 4.1 is arranged on the connecting clamp 4. The front pressing table 6 is of a wedge-shaped structure. The rear pressing table 7 is of a wedge-shaped structure. The indent 8 is the tubaeform opening, indent 8 compresses tightly with preceding platen 6, back platen 7 cooperation. And flat tops are arranged at the tops of the front pressing platform 6 and the rear pressing platform 7.
In actual use, the invention comprises the following steps:
the wall thickness of the sealing gasket boss 5 is 1.5-3 mm, the sealing gasket boss and the front exhaust pipeline 1, the rear exhaust pipeline 2 and the sealing gasket 3 are in small clearance fit, the sealing gasket 3 is made of brass materials, and the thickness of the sealing gasket boss is 0.9-1.1 mm.
During assembly, the sealing gasket 3 is sleeved on the sealing gasket boss 5 of the rear exhaust pipeline 2, then is connected with the front exhaust pipeline 1, and finally is fastened through the connecting hoop 4.
This device utilizes back exhaust pipe 2 to increase the mode of sealed boss 5, avoids sealed 3 direct and waste gas contact of filling up, makes it difficult to produce serious axial deformation, and the reliability is high. The sealing gasket 3 is of a simple flat plate structure, a positioning boss does not need to be manufactured, and the sealing gasket is light in weight and low in cost.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (10)
1. The utility model provides an exhaust pipe seal structure which characterized in that: including preceding exhaust pipe way (1) and back exhaust pipe way (2), be equipped with sealed pad (3) between preceding exhaust pipe way (1) and back exhaust pipe way (2), be equipped with on preceding exhaust pipe way (1) and back exhaust pipe way (2) and connect clamp (4), connect clamp (4) and set up the periphery in preceding exhaust pipe way (1) and back exhaust pipe way (2), be equipped with sealed boss (5) of packing on back exhaust pipe way (2), sealed pad (3) and sealed boss (5) of packing are near.
2. An exhaust line sealing structure according to claim 1, wherein: the sealing gasket boss (5) is arranged in the direction of the front exhaust pipeline (1), and the sealing gasket boss (5) is abutted against the front exhaust pipeline (1).
3. An exhaust line sealing structure according to claim 2, wherein: the sealing gasket boss (5) is arranged on the inner periphery of the rear exhaust pipeline (2), and the inner periphery of the sealing gasket (3) is abutted against the outer periphery of the sealing gasket boss (5).
4. An exhaust line sealing structure according to claim 3, wherein: the inner circumference of the front exhaust pipeline (1) is abutted against the outer circumference of the sealing gasket boss (5).
5. An exhaust pipe sealing structure according to any one of claims 1 to 4, wherein: be equipped with preceding pressure platform (6) on preceding exhaust pipe (1), be equipped with back pressure platform (7) on back exhaust pipe (2), be equipped with indent (8) on connection clamp (4), preceding pressure platform (6) and back pressure platform (7) set up in indent (8).
6. An exhaust line sealing structure according to claim 5, wherein: and a clamp buckle (4.1) is arranged on the connecting clamp (4).
7. An exhaust line sealing structure according to claim 6, wherein: the front pressing table (6) is of a wedge-shaped structure.
8. An exhaust line sealing structure according to claim 7, wherein: the rear pressing table (7) is of a wedge-shaped structure.
9. An exhaust line sealing structure according to claim 8, wherein: the pressure groove (8) is a horn-shaped opening, and the pressure groove (8) is matched and pressed with the front pressure table (6) and the rear pressure table (7).
10. An exhaust line sealing structure according to claim 9, wherein: the tops of the front pressing platform (6) and the rear pressing platform (7) are provided with flat tops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100458.3A CN110792499A (en) | 2019-11-12 | 2019-11-12 | Exhaust pipeline sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100458.3A CN110792499A (en) | 2019-11-12 | 2019-11-12 | Exhaust pipeline sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110792499A true CN110792499A (en) | 2020-02-14 |
Family
ID=69444162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911100458.3A Pending CN110792499A (en) | 2019-11-12 | 2019-11-12 | Exhaust pipeline sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110792499A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204152620U (en) * | 2014-09-17 | 2015-02-11 | 沈阳航天三菱汽车发动机制造有限公司 | The clip connected structure of a kind of vehicle engine exhaust divided manifold and pressurized machine |
| CN205025567U (en) * | 2015-10-13 | 2016-02-10 | 哈尔滨东安汽车发动机制造有限公司 | Connection structure of turbo charger and exhaust assembly |
| CN205654416U (en) * | 2016-05-31 | 2016-10-19 | 大运汽车股份有限公司 | Blast pipe is connected and seal structure |
| CN208845717U (en) * | 2018-07-27 | 2019-05-10 | 一汽解放汽车有限公司 | A kind of high temperature pressure seal device for the sealing of gas-liquid two-phase |
| CN211008843U (en) * | 2019-11-12 | 2020-07-14 | 东风商用车有限公司 | Exhaust pipeline sealing structure |
-
2019
- 2019-11-12 CN CN201911100458.3A patent/CN110792499A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204152620U (en) * | 2014-09-17 | 2015-02-11 | 沈阳航天三菱汽车发动机制造有限公司 | The clip connected structure of a kind of vehicle engine exhaust divided manifold and pressurized machine |
| CN205025567U (en) * | 2015-10-13 | 2016-02-10 | 哈尔滨东安汽车发动机制造有限公司 | Connection structure of turbo charger and exhaust assembly |
| CN205654416U (en) * | 2016-05-31 | 2016-10-19 | 大运汽车股份有限公司 | Blast pipe is connected and seal structure |
| CN208845717U (en) * | 2018-07-27 | 2019-05-10 | 一汽解放汽车有限公司 | A kind of high temperature pressure seal device for the sealing of gas-liquid two-phase |
| CN211008843U (en) * | 2019-11-12 | 2020-07-14 | 东风商用车有限公司 | Exhaust pipeline sealing structure |
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