CN216665776U - Supercharged engine exhaust system seal structure - Google Patents
Supercharged engine exhaust system seal structure Download PDFInfo
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- CN216665776U CN216665776U CN202220173565.XU CN202220173565U CN216665776U CN 216665776 U CN216665776 U CN 216665776U CN 202220173565 U CN202220173565 U CN 202220173565U CN 216665776 U CN216665776 U CN 216665776U
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- flange
- ring
- exhaust system
- supercharged engine
- engine exhaust
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a sealing structure of a supercharged engine exhaust system, which comprises an exhaust manifold flange, a supercharger flange and a sealing gasket, wherein the sealing gasket is arranged between the exhaust manifold flange and the supercharger flange; the gasket comprises a gasket main body, wherein an elastic corrugated ring capable of elastically deforming along the axial direction is arranged in the middle of the gasket main body, a first air passage hole is formed in the middle of the elastic corrugated ring, a plurality of first installation parts are arranged at intervals in the circumferential direction of the gasket main body, and first connection holes are formed in the first installation parts; exhaust manifold flange includes the flange main part, the middle part of flange main part is provided with second gas channel hole, be provided with a plurality of second installation departments in the flange main part, it is a plurality of all be provided with the second connecting hole on the second installation department, be provided with a plurality of holes that act on in the flange main part. The exhaust manifold flange sealing structure has a good sealing effect, and can prevent the exhaust manifold flange from cracking caused by local stress concentration.
Description
Technical Field
The utility model relates to a supercharged engine, in particular to a supercharged engine exhaust system sealing structure.
Background
The exhaust manifold flange and the supercharger flange are in sealing connection through the sealing gasket, the arrangement of the supercharged engine is gradually compact along with the continuous development of the supercharger technology of the engine, the explosion pressure is gradually increased, the exhaust temperature of the supercharged engine is higher and higher, the temperature is higher than 1000 ℃ from more than 700 ℃, the exhaust manifold flange is greatly deformed due to the harsh high-temperature exhaust, and the sealing elasticity of the sealing gasket is poor, so that the air leakage problem is caused. In order to solve the problem, the traditional exhaust manifold and supercharger sealing system design often reduces the deformation by increasing the rigidity of the exhaust manifold flange, so that on one hand, local stress concentration can cause cracking, and on the other hand, the exhaust manifold flange is too thick, and the weight and the cost are increased; in addition, the sealing gasket used for being matched with the exhaust manifold flange in the prior art can generate stress yield along with the change of time, cannot fill up the gap caused by the deformation of the flange through rebound, can cause air leakage, and is poor in reliability.
CN211819711U discloses a metal sealing gasket for a supercharger, which comprises a gasket main body, wherein an air passage hole is formed in the middle of the gasket main body, a plurality of mounting parts are circumferentially arranged at intervals on the gasket main body, and connecting holes are formed in the mounting parts; the gasket main part is including the first base plate, second base plate and the third base plate that stack gradually the connection, on the first base plate with all follow on the third base plate the circumferencial direction in gas passage hole all is provided with the elasticity ripple ring, the elasticity ripple ring with form between the second base plate the deformation space of elasticity ripple ring, the second base plate corresponds the position of connecting hole both sides is provided with folding turn-ups respectively. The metal sealing gasket of the supercharger has good sealing effect and can ensure the resilience performance of the sealing gasket, thereby ensuring that the resilience of the sealing gasket under the harsh cold and hot impact working condition can compensate the deformation of the flange, and realizing that the metal sealing gasket of the supercharger still keeps good sealing performance under the high-temperature condition. Needless to say, the technical solution disclosed in this patent document is a useful attempt in the technical field.
Disclosure of Invention
In view of this, an object of the present invention is to provide a sealing structure for an exhaust system of a supercharged engine, which can seal a joint surface between an exhaust manifold flange and a supercharger flange, has a good sealing effect, and can prevent the exhaust manifold flange from cracking due to local stress concentration.
The utility model relates to a sealing structure of an exhaust system of a supercharged engine, which comprises an exhaust manifold flange, a supercharger flange and a sealing gasket, wherein the sealing gasket is arranged between the exhaust manifold flange and the supercharger flange; the gasket comprises a gasket main body, wherein an elastic corrugated ring capable of elastically deforming along the axial direction is arranged in the middle of the gasket main body, a first air passage hole is formed in the middle of the elastic corrugated ring, a plurality of first installation parts are arranged at intervals in the circumferential direction of the gasket main body, and first connection holes are formed in the first installation parts; exhaust manifold flange includes the flange main part, the middle part of flange main part corresponds the position in first gas channel hole is provided with second gas channel hole, it is a plurality of to correspond in the flange main part the position of first installation department is provided with a second installation department respectively, the second installation department corresponds the position of first connecting hole is provided with the second connecting hole, correspond in the flange main part elasticity ripple ring and each position between the second connecting hole is provided with one respectively and answers the hole.
Further, it is a plurality of the strain hole is the through-hole that the middle part is big and both ends are little.
Furthermore, the elastic corrugated ring comprises an upper plate, a middle plate and a lower plate which are sequentially stacked along the axial direction, a first deformation space is arranged between the upper plate and the middle plate, and a second deformation space is arranged between the middle plate and the lower plate.
Further, the upper plate comprises a first straight ring, a first bending ring, a second straight ring, a second bending ring and a third straight ring which are sequentially arranged along the radial direction of the first air channel hole outwards.
Further, under the state without external force, the first straight ring, the second straight ring and the third straight ring are parallel to each other, the first bending ring gradually inclines upwards along the radial direction of the first air passage hole, and the second bending ring gradually inclines downwards along the radial direction of the first air passage hole.
Further, the lower plate and the upper plate are symmetrical to each other.
Furthermore, a plurality of annular bosses protruding upwards are arranged on the middle layer plate at intervals along the radial direction of the first air channel hole.
Furthermore, the cross sections of the annular bosses are semicircular, and the annular bosses are arranged at equal intervals.
Furthermore, the upper plate and the lower plate are made of high-temperature alloy with the mark GH4169, and the middle plate is made of stainless steel with the mark SUS 310S.
Further, the quantity of first installation department, first connecting hole, second installation department, second connecting hole and strain hole is three.
The utility model has the beneficial effects that: (1) the elastic corrugated ring capable of elastically deforming along the axial direction is compressed and deformed by the exhaust manifold flange and the supercharger flange, so that the sealing of the joint surface of the exhaust manifold flange and the supercharger flange is realized, and the sealing effect is good; (2) the strain hole can prevent the exhaust manifold flange from cracking caused by local stress concentration; (3) the elastic corrugated ring has a multiple sealing structure; (4) the plurality of annular bosses can ensure that the elastic corrugated ring still has good rebound resilience when the exhaust manifold flange and the supercharger flange are deformed at high temperature, thereby ensuring the sealing performance.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the utility model more clear, the utility model provides the following drawings for explanation:
FIG. 1 is a schematic view of an exhaust manifold flange and gasket configuration of the present invention;
fig. 2 is a schematic sectional view taken along line a-a of fig. 1.
The drawings are numbered as follows:
1-an exhaust manifold flange, 11-a flange main body, 12-a second air channel hole, 13-a second mounting part, 14-a second connecting hole and 15-a strain hole;
2-sealing gasket, 21-gasket body, 22-elastic corrugated ring, 23-first air channel hole, 24-first mounting part, 25-first connecting hole, 26-upper plate, 261-first straight ring, 262-first bending ring, 263-second straight ring, 264-second bending ring, 265-third straight ring, 27-middle plate, 271-annular boss, 28-lower plate, 29-first deformation space and 210-second deformation space.
Detailed Description
As shown in fig. 1-2, the sealing structure of the exhaust system of the supercharged engine in the present embodiment includes an exhaust manifold flange 1, a supercharger flange (not shown in the figure), and a gasket 2, where the gasket 2 is disposed between the exhaust manifold flange 1 and the supercharger flange; the gasket 2 comprises a gasket main body 21, an elastic corrugated ring 22 capable of elastically deforming along the axial direction is arranged in the middle of the gasket main body 21, a first air passage hole 23 is arranged in the middle of the elastic corrugated ring 22, a plurality of first mounting parts 24 are arranged at intervals in the circumferential direction of the gasket main body 21, and first connecting holes 25 are formed in the first mounting parts 24; the exhaust manifold flange 1 comprises a flange main body 11, wherein a second air channel hole 12 is formed in the middle of the flange main body 11 corresponding to a first air channel hole 23, a second mounting part 13 is respectively arranged on the flange main body 11 corresponding to a plurality of first mounting parts 24, a second connecting hole 14 is formed in the second mounting part 13 corresponding to a first connecting hole 25, and a strain hole 15 is respectively formed in the flange main body 11 corresponding to a position between an elastic corrugated ring 22 and each second connecting hole 14; preferably, the strain hole 15 is provided on the second mounting portion 13. The sealing gasket 2 is arranged between the exhaust manifold flange 1 and the supercharger flange, then the exhaust manifold flange 1 is connected with the supercharger flange through a threaded fastener, the sealing gasket 2 is pressed between the exhaust manifold flange 1 and the supercharger flange, and the elastic corrugated ring 22 capable of elastic deformation along the axial direction is compressed and deformed by the exhaust manifold flange 1 and the supercharger flange, so that the sealing of the joint surface of the exhaust manifold flange 1 and the supercharger flange is realized. When the exhaust temperature of the engine reaches more than 1000 ℃, the exhaust manifold flange 1 is greatly deformed due to harsh high-temperature exhaust, and at the moment, the exhaust manifold flange 1 can stretch towards the strain hole 15, so that the deformation of the exhaust manifold flange 1 is reduced, and the exhaust manifold flange 1 is prevented from cracking due to local stress concentration. Meanwhile, the strain hole 15 is positioned between the elastic corrugated ring 22 and the second connecting hole 14, and the strain hole 15 is prevented from influencing the sealing effect.
In this embodiment, each of the strain holes 15 is a through hole having a large middle portion and small ends, and each of the strain holes 15 may have a shape similar to an ellipse.
In this embodiment, the elastic corrugated ring 22 includes an upper plate 26, a middle plate 27 and a lower plate 28 sequentially stacked along an axial direction, a first deformation space 29 is provided between the upper plate 26 and the middle plate 27, and a second deformation space 210 is provided between the middle plate 27 and the lower plate 28; the upper plate 26 includes a first flat ring 261, a first bent ring 262, a second flat ring 263, a second bent ring 264, and a third flat ring 265 which are sequentially arranged radially outward of the first air passage hole 23; in a state where no external force is applied, the first straight ring 261, the second straight ring 263, and the third straight ring 265 are parallel to each other, the first bending ring 262 is gradually inclined upward along the radial direction of the first air passage hole 23, and the second bending ring 264 is gradually inclined downward along the radial direction of the first air passage hole 23; the lower plate 28 and the upper plate 26 are symmetrical to each other. The first bending ring 262, the second straight ring 263 and the second bending ring 264 are formed into a trapezoidal shape in cross section, the bending shape of the upper plate 26 enables the elastic corrugated ring 22 to form a double sealing structure in the radial direction, and the first straight ring 261 is suspended, so that the upper plate 26 has good resilience, and the lower plate 28 is similar. The upper plate 26, the middle plate 27 and the lower plate 28 form the elastic corrugated ring 22 with a double sealing structure in the axial direction.
In this embodiment, a plurality of annular bosses 271 protruding upward are provided on the middle plate 27 at intervals in the radial direction of the first air passage hole 23; the cross sections of the annular bosses 271 are semicircular, and the annular bosses 271 are arranged at equal intervals. The plurality of annular bosses 271 make the section of the middle plate 27 wavy, and the annular bosses make the upper plate 26 and the middle plate 27 unable to be completely attached, so that the first deformation space 29 always exists, and the elastic corrugated ring 22 still has good resilience when the exhaust manifold flange 1 and the supercharger flange are deformed at high temperature, thereby ensuring the sealing performance.
In this embodiment, the upper plate 26 and the lower plate 28 are made of a high temperature alloy of GH4169, and the middle plate 27 is made of stainless steel of SUS310S
The high-temperature alloy with the mark number GH4169 has good temperature resistance, and ensures that the upper plate 26 and the lower plate 28 still have good elasticity at high temperature; the stainless steel under the designation SUS310S is low in cost, and can reduce the production cost of the gasket 2.
In the present embodiment, the number of the first mounting portion 24, the first connection hole 25, the second mounting portion 13, the second connection hole 14, and the strain hole 15 is three.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides a supercharged engine exhaust system seal structure, includes exhaust manifold flange (1), booster flange and sealed pad (2), sealed pad (2) set up between exhaust manifold flange (1) and the booster flange, its characterized in that:
the sealing gasket (2) comprises a gasket main body (21), an elastic corrugated ring (22) capable of elastically deforming along the axial direction is arranged in the middle of the gasket main body (21), a first air passage hole (23) is formed in the middle of the elastic corrugated ring (22), a plurality of first mounting portions (24) are arranged at intervals in the circumferential direction of the gasket main body (21), and first connecting holes (25) are formed in the plurality of first mounting portions (24);
exhaust manifold flange (1) includes flange main part (11), the middle part of flange main part (11) corresponds the position of first gas channel hole (23) is provided with second gas channel hole (12), it is a plurality of to correspond on flange main part (11) the position of first installation department (24) is provided with a second installation department (13) respectively, second installation department (13) correspond the position of first connecting hole (25) is provided with second connecting hole (14), correspond on flange main part (11) elasticity ripple ring (22) and each position between second connecting hole (14) is provided with one respectively and strains hole (15).
2. The supercharged engine exhaust system sealing structure according to claim 1, characterized in that: and the strain holes (15) are all through holes with large middle parts and small two ends.
3. The supercharged engine exhaust system sealing structure according to claim 1, characterized in that: elastic ripple ring (22) include along axial upper plate (26), well plywood (27) and lower plywood (28) that stack gradually the setting, first deformation space (29) have between upper plate (26) and well plywood (27), second deformation space (210) have between well plywood (27) and lower plywood (28).
4. A supercharged engine exhaust system sealing structure according to claim 3, characterized in that: the upper plate (26) comprises a first straight ring (261), a first bending ring (262), a second straight ring (263), a second bending ring (264) and a third straight ring (265) which are sequentially arranged along the radial direction of the first air channel hole (23) outwards.
5. The supercharged engine exhaust system sealing structure according to claim 4, characterized in that: under the state without external force, the first straight ring (261), the second straight ring (263) and the third straight ring (265) are parallel to each other, the first bending ring (262) gradually inclines upwards along the radial direction of the first air channel hole (23), and the second bending ring (264) gradually inclines downwards along the radial direction of the first air channel hole (23).
6. The supercharged engine exhaust system sealing structure according to claim 5, characterized in that: the lower plate (28) and the upper plate (26) are symmetrical to each other.
7. A supercharged engine exhaust system sealing structure according to claim 3, characterized in that: a plurality of annular bosses (271) protruding upwards are arranged on the middle layer plate (27) at intervals along the radial direction of the first air channel hole (23).
8. The supercharged engine exhaust system sealing structure according to claim 7, characterized in that: the cross sections of the annular bosses (271) are semicircular, and the annular bosses (271) are arranged at equal intervals.
9. A supercharged engine exhaust system sealing structure according to claim 3, characterized in that: the upper plate (26) and the lower plate (28) are made of high-temperature alloy with the mark GH4169, and the middle plate (27) is made of stainless steel with the mark SUS 310S.
10. The supercharged engine exhaust system sealing structure according to claim 1, characterized in that: the number of the first mounting part (24), the first connecting holes (25), the second mounting part (13), the second connecting holes (14) and the strain holes (15) is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220173565.XU CN216665776U (en) | 2022-01-22 | 2022-01-22 | Supercharged engine exhaust system seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220173565.XU CN216665776U (en) | 2022-01-22 | 2022-01-22 | Supercharged engine exhaust system seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216665776U true CN216665776U (en) | 2022-06-03 |
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ID=81764737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220173565.XU Active CN216665776U (en) | 2022-01-22 | 2022-01-22 | Supercharged engine exhaust system seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216665776U (en) |
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2022
- 2022-01-22 CN CN202220173565.XU patent/CN216665776U/en active Active
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