CN213743626U - Exhaust pipe and gasket assembly - Google Patents
Exhaust pipe and gasket assembly Download PDFInfo
- Publication number
- CN213743626U CN213743626U CN202021908932.3U CN202021908932U CN213743626U CN 213743626 U CN213743626 U CN 213743626U CN 202021908932 U CN202021908932 U CN 202021908932U CN 213743626 U CN213743626 U CN 213743626U
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- Prior art keywords
- gasket
- heat
- exhaust pipe
- sealing
- insulating sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 69
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 19
- 239000002826 coolant Substances 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 abstract description 12
- 239000002912 waste gas Substances 0.000 abstract description 9
- 230000001737 promoting effect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
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Abstract
The utility model discloses an exhaust pipe and gasket subassembly, wherein the gasket subassembly includes that first sealed pad, the sealed pad of second, the sealed pad of first heat insulation sleeve, third and second heat insulation sleeve. According to the scheme, the first heat-insulating sleeve and the second heat-insulating sleeve are respectively added in the exhaust passage and the exhaust pipe, the first sealing cavity is formed in the exhaust passage, the second sealing cavity is formed in the exhaust pipe, and gas does not flow in the first sealing cavity and the second sealing cavity, so that the gas sealing cavity is formed. Keep apart waste gas and coolant liquid through the gas seal chamber, utilize heat conduction coefficient far below the gaseous heat transfer of metal simultaneously to effectively reduce the heat of waste gas transmission in the coolant liquid, the decline of exhaust gas temperature is few, and waste gas can take away the heat basically unchangeably, guarantees that most heat transmits the booster and is not followed the coolant liquid and is wasted, and this part heat is turned into kinetic energy itself by the booster, is used for promoting the pressure boost ability, improves the efficiency of booster.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to blast pipe and gasket subassembly.
Background
Along with the continuous promotion of intensification degree indexes such as the liter power of diesel engine and liter moment of torsion, the exhaust temperature of diesel engine also is constantly promoting, needs to carry out surface cooling to the blast pipe and handles to the scald takes place, and leads to machine oil or the ageing inefficacy of spare part on every side.
In the prior art, a water cavity is arranged around the exhaust pipe to realize surface cooling of the exhaust pipe, and heat in the exhaust gas is firstly transferred to the pipe wall of the exhaust pipe and then transferred to the cooling liquid in the water cavity through the pipe wall of the exhaust pipe.
However, the heat transferred to the coolant is lost along with the cooling system of the entire vehicle, which causes the supercharger to have low efficiency and the conversion rate of the aftertreatment to be at a low level.
Therefore, how to reduce the heat transferred from the exhaust pipe to the coolant to reduce the heat loss of the exhaust pipe and improve the efficiency of the supercharger becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a gasket subassembly to reduce the heat that the blast pipe transmitted in the coolant liquid, reduce the thermal loss of blast pipe, improve the efficiency of booster. The utility model also provides an blast pipe.
In order to achieve the above object, the utility model provides a following technical scheme:
a gasket assembly, comprising:
a first gasket positionable between the cylinder head and the exhaust pipe;
the second sealing gasket is arranged on one side, close to the exhaust pipe, of the first sealing gasket and is connected with the first sealing gasket;
the first heat insulation sleeve is connected with the second sealing gasket, the first heat insulation sleeve can extend into the exhaust pipe and is in clearance fit with the exhaust pipe, a first annular bulge is arranged at one end, away from the second sealing gasket, of the first heat insulation sleeve, the first annular bulge can be in interference fit with the exhaust pipe, and a first sealing cavity is formed between the first annular bulge and the second sealing gasket;
the third sealing gasket is arranged on one side, close to the cylinder cover, of the first sealing gasket and is connected with the first sealing gasket;
the second heat insulation sleeve is connected with the third sealing gasket, the second heat insulation sleeve can stretch into the exhaust passage of the cylinder cover and is in clearance fit with the exhaust passage, a second annular bulge is arranged at one end, away from the third sealing gasket, of the second heat insulation sleeve, the second annular bulge can be in interference fit with the exhaust passage, and a second sealing cavity is formed between the second annular bulge and the third sealing gasket.
Preferably, in the gasket assembly, the first gasket is welded to the second gasket, and the first gasket is welded to the third gasket.
Preferably, in the gasket assembly, the first heat insulating sleeve is a stainless steel sleeve.
Preferably, in the gasket assembly, the second gasket is integrally connected to the first insulating sleeve.
Preferably, in the gasket assembly, the second heat insulating sleeve is a stainless steel sleeve.
Preferably, in the gasket assembly, the third gasket is integrally connected to the second insulating sleeve.
Preferably, in the gasket assembly, the outer wall of the first insulating sleeve is provided with a first insulating coating.
Preferably, in the gasket assembly described above, the outer wall of the second insulating sleeve is provided with a second insulating coating.
An exhaust pipe comprising a gasket assembly for sealing between the exhaust pipe and a cylinder head, the gasket assembly being as described in any one of the above aspects.
According to the above technical scheme, the utility model provides a gasket subassembly includes that first sealed pad, the sealed pad of second, first heat insulating sleeve pipe, the sealed pad of third and second heat insulating sleeve pipe, the sealed pad of second and the sealed both sides that are located first sealed pad respectively of third. According to the scheme, the first heat-insulating sleeve and the second heat-insulating sleeve are respectively added in the exhaust passage and the exhaust pipe, the first sealing cavity is formed in the exhaust passage, the second sealing cavity is formed in the exhaust pipe, and gas does not flow in the first sealing cavity and the second sealing cavity, so that the gas sealing cavity is formed. Keep apart waste gas and coolant liquid through the gas seal chamber, utilize heat conduction coefficient far below the gaseous heat transfer of metal simultaneously to effectively reduce the heat of waste gas transmission in the coolant liquid, the decline of exhaust gas temperature is few, and waste gas can take away the heat basically unchangeably, guarantees that most heat transmits the booster and is not followed the coolant liquid and is wasted, and this part heat is turned into kinetic energy itself by the booster, is used for promoting the pressure boost ability, improves the efficiency of booster.
The scheme also discloses an exhaust pipe, which comprises a gasket assembly, wherein the gasket assembly is used for realizing the sealing connection between the exhaust pipe and the cylinder cover, and the gasket assembly is recorded in any one scheme. Because the gasket assembly has the technical effects, the exhaust pipe with the gasket assembly also has the same technical effects, and the details are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a gasket assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an exhaust pipe according to an embodiment of the present invention;
fig. 3 is a diagram illustrating a transfer path of heat in the exhaust pipe according to an embodiment of the present invention.
Wherein,
1. the sealing structure comprises a first sealing gasket, a second sealing gasket, a first heat insulation sleeve, a first annular bulge, a second sealing gasket, a third sealing gasket, a second heat insulation sleeve, a first sealing gasket, a second sealing gasket, a first annular bulge, a second sealing gasket, a second heat insulation sleeve, a second annular bulge and a second annular bulge.
Detailed Description
The utility model discloses a gasket subassembly to reduce the heat in the blast pipe transmits the coolant liquid, reduce the thermal loss of blast pipe, improve the efficiency of booster. The utility model also provides an blast pipe.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1-3. The utility model discloses a gasket subassembly for realize the sealed between cylinder head and the blast pipe.
As shown in fig. 1, the gasket assembly includes a first gasket 1, a second gasket 2, a first heat insulating sleeve 3, a third gasket 4, and a second heat insulating sleeve 5, wherein the second gasket 2 and the third gasket 4 are respectively located at both sides of the first gasket 1.
The second sealing gasket 2 is positioned on one side of the first sealing gasket 1 close to the exhaust pipe, and the second sealing gasket 2 is connected with the first sealing gasket 1.
The first heat insulation sleeve 3 is arranged on the second sealing gasket 2, and the first heat insulation sleeve 3 can go deep into the exhaust pipe and is in clearance fit with the exhaust pipe.
One end of the first heat insulation sleeve 3, which is far away from the second sealing gasket 2, is provided with a first annular protrusion 31, and the first annular protrusion 31 can be in interference fit with an exhaust pipe.
As shown in fig. 2 and 3, the second sealing ring cooperates with the first annular protrusion 31 to seal the gap between the first insulating sleeve 3 and the exhaust pipe, so as to form a first sealing cavity. The first sealing cavity is internally provided with gas and is a gas sealing cavity.
The third sealing gasket 4 is positioned on one side of the first sealing gasket 1 close to the cylinder head, and the third sealing gasket 4 is connected with the first sealing gasket 1.
The second heat insulation sleeve 5 is connected with the third sealing gasket 4, and the second heat insulation sleeve 5 can go deep into the exhaust passage of the cylinder cover and is in clearance fit with the exhaust passage.
One end of the second heat insulation sleeve 5, which is far away from the third sealing gasket 4, is provided with a second annular bulge 51, and the second annular bulge 51 can be in interference fit with the exhaust passage.
As shown in fig. 2 and 3, the third sealing ring cooperates with the second annular protrusion 51 to seal the gap between the second insulating sleeve 5 and the exhaust passage, so as to form a second sealed cavity. The second sealed cavity is internally provided with gas and is a gas sealed cavity.
According to the scheme, the first heat-insulating sleeve 3 and the second heat-insulating sleeve 5 are respectively added in the exhaust passage and the exhaust pipe, a first sealing cavity is formed in the exhaust passage, a second sealing cavity is formed in the exhaust pipe, and gas does not flow in the first sealing cavity and the second sealing cavity, so that a gas sealing cavity is formed. Keep apart waste gas and coolant liquid through the gas seal chamber, utilize heat conduction coefficient far below the gaseous heat transfer of metal simultaneously to effectively reduce the heat of waste gas transmission in the coolant liquid, the decline of exhaust gas temperature is few, and waste gas can take away the heat basically unchangeably, guarantees that most heat transmits the booster and is not followed the coolant liquid and is wasted, and this part heat is turned into kinetic energy itself by the booster, is used for promoting the pressure boost ability, improves the efficiency of booster.
In addition, the heat transmitted to the cooling liquid by the exhaust pipe is reduced, and the matching difficulty of the supercharger can be reduced.
Because the heat that the blast pipe transmitted in the coolant liquid reduces, when matcing whole car water tank, can match littleer radiator, reduce whole car weight.
Because the temperature of the exhaust gas entering the supercharger is increased, the exhaust temperature after the supercharger is whirled is also increased, the regeneration of the DPF and the conversion efficiency of the SCR in the aftertreatment are improved, the original emission of the engine is further improved, and the fuel consumption is optimized.
In a specific embodiment of the solution, the first gasket 1 is welded to the second gasket 2, and the first gasket 1 is welded to the third gasket 4.
The gasket subassembly of this scheme disclosure includes the three-layer gasket, and first layer gasket includes first gasket, and the second floor gasket includes second gasket and first heat insulating sleeve 3, and the third layer gasket includes third gasket and second heat insulating sleeve 5.
During assembly, the first layer of gasket, the second layer of gasket and the third layer of gasket are welded together in sequence, and the welded gasket assemblies are assembled in the cylinder cover and the exhaust pipe.
In order to ensure the service life of the first heat insulation sleeve 3 and the second heat insulation sleeve 5, the first heat insulation sleeve 3 and the second heat insulation sleeve 5 are preferably made of high temperature resistant alloy in the scheme.
First heat insulating sleeve 3 and second heat insulating sleeve 5 adopt stainless steel material preparation in this scheme.
In order to reduce the connection difficulty of the first heat insulation sleeve 3 and the second gasket, the first heat insulation sleeve 3 and the second sealing gasket 2 are integrally formed.
In order to reduce the connection difficulty of the second heat insulation sleeve and the third gasket, the second heat insulation sleeve and the third gasket are integrally formed.
First heat insulating sleeve 3 and the sealed 2, the second heat insulating sleeve of second and third gasket integrated into one piece preparation, reduced along the risk of exhaust pipe wall and cylinder head wall gas leakage.
In order to further improve the heat insulation capability of the gas-tight chamber, it is preferable that the outer wall of the first heat-insulating sleeve 3 is provided with a first heat-insulating coating, and the outer wall of the second heat-insulating sleeve 5 is provided with a second heat-insulating coating.
The scheme also discloses an exhaust pipe, which comprises a gasket assembly, wherein the gasket assembly is used for realizing the sealing connection between the exhaust pipe and the cylinder cover, and the gasket assembly is recorded in any one scheme.
Because the gasket assembly has the technical effects, the exhaust pipe with the gasket assembly also has the same technical effects, and the details are not repeated herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A gasket assembly, comprising:
a first gasket (1) that can be positioned between the cylinder head and the exhaust pipe;
the second sealing gasket (2) is arranged on one side, close to the exhaust pipe, of the first sealing gasket (1) and is connected with the first sealing gasket (1);
the first heat insulation sleeve (3) is connected with the second sealing gasket (2), the first heat insulation sleeve (3) can extend into the exhaust pipe and is in clearance fit with the exhaust pipe, a first annular protrusion (31) is arranged at one end, away from the second sealing gasket (2), of the first heat insulation sleeve (3), the first annular protrusion (31) can be in interference fit with the exhaust pipe, and a first sealing cavity is formed between the first annular protrusion (31) and the second sealing gasket (2);
the third sealing gasket (4) is arranged on one side, close to the cylinder cover, of the first sealing gasket (1) and is connected with the first sealing gasket (1);
second heat insulating sleeve pipe (5), with the third is sealed fills up (4) and is connected, second heat insulating sleeve pipe (5) can stretch into in the exhaust passage of cylinder head and with exhaust passage clearance fit, second heat insulating sleeve pipe (5) are kept away from the one end that the third sealed was sealed (4) is provided with second annular arch (51), second annular arch (51) can with exhaust passage interference fit, second annular arch (51) with form the sealed chamber of second between the sealed (4) of third.
2. A gasket assembly according to claim 1, characterised in that the first gasket (1) is welded to the second gasket (2) and the first gasket (1) is welded to the third gasket (4).
3. A gasket assembly according to claim 1, wherein the first insulating sleeve (3) is a stainless steel sleeve.
4. A gasket assembly according to claim 1, wherein the second gasket (2) is integrally connected to the first insulating sleeve (3).
5. A gasket assembly according to claim 1, wherein the second insulating sleeve (5) is a stainless steel sleeve.
6. A gasket assembly according to claim 1, wherein the third gasket (4) is integrally connected to the second insulating sleeve (5).
7. A gasket assembly according to claim 1, wherein the outer wall of the first insulating sleeve (3) is provided with a first insulating coating.
8. A gasket assembly according to claim 1, wherein the outer wall of the second insulating sleeve (5) is provided with a second insulating coating.
9. An exhaust pipe comprising a gasket assembly for sealing between the exhaust pipe and a cylinder head, the gasket assembly being as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908932.3U CN213743626U (en) | 2020-09-03 | 2020-09-03 | Exhaust pipe and gasket assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908932.3U CN213743626U (en) | 2020-09-03 | 2020-09-03 | Exhaust pipe and gasket assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213743626U true CN213743626U (en) | 2021-07-20 |
Family
ID=76841799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021908932.3U Active CN213743626U (en) | 2020-09-03 | 2020-09-03 | Exhaust pipe and gasket assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213743626U (en) |
-
2020
- 2020-09-03 CN CN202021908932.3U patent/CN213743626U/en active Active
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