CN213175804U - Exhaust manifold and three way catalyst converter seal structure - Google Patents
Exhaust manifold and three way catalyst converter seal structure Download PDFInfo
- Publication number
- CN213175804U CN213175804U CN202021475527.7U CN202021475527U CN213175804U CN 213175804 U CN213175804 U CN 213175804U CN 202021475527 U CN202021475527 U CN 202021475527U CN 213175804 U CN213175804 U CN 213175804U
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- CN
- China
- Prior art keywords
- flange
- exhaust manifold
- way catalyst
- stud
- catalyst converter
- 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.)
- Expired - Fee Related
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 64
- 238000007789 sealing Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 210000001503 joint Anatomy 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses exhaust manifold and three way catalyst converter seal structure, including exhaust manifold flange of giving vent to anger, three way catalyst converter flange, sealed the pad, stud, exhaust manifold flange of giving vent to anger, three way catalyst converter flange is the plane flange respectively, exhaust manifold flange of giving vent to anger is smooth plane respectively with the butt joint face of three way catalyst converter flange, sealed pad is smooth graphite gasket, exhaust manifold flange of giving vent to anger and three way catalyst converter flange periphery are equipped with the screw hole of position mutual correspondence respectively, sealed pad is equipped with the through-hole that corresponds each other with the screw hole position, stud both ends stud surface is equipped with the external screw thread respectively, stud leans on the surface of middle part position and sealed pad cooperation section for not establishing the smooth surface of external screw thread, stud one end still is furnished with. The exhaust manifold outlet flange, the sealing gasket and the three-way catalyst flange are connected through the double-end stud. The utility model adopts the above structure have than prior art better sealing performance.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to exhaust manifold and three way catalyst converter seal structure.
Background
The assembly mode of the spherical flange and the spherical sealing gasket of the exhaust manifold has strict requirements on the hoisting mode of the three-way catalyst assembly (namely the assembly mode of the three-way catalyst and the exhaust manifold is soft connection, the three-way catalyst and a frame are also required to be soft connection, and the hoisting position is generally on a front-stage carrier and is hung on the frame by a cushion). Fig. 1 to 3 show a sealing structure between an exhaust manifold assembly and a three-way catalyst assembly in the prior art, in which an exhaust manifold outlet flange i 1 and a three-way catalyst flange i 3 are spherical flanges (made of SUH409 and having a thickness of 3 mm), a spherical gasket 2 is used as the gasket, and a bolt 7 and a compression spring 8 are used as a fastener 6. The sealing is compressed by the spherical sealing gasket, then the deformation is generated, and the gap of the assembly contact surface is measured and compensated, but the surface of the spherical sealing gasket is rough, and the flatness cannot be ensured. In addition, the structure problem (the stainless steel wire is used as a framework and is filled with flexible graphite) is easy to be corroded by heat to cause air leakage and expansion; again the fasteners are compression springs and bolts: when the vehicle shakes during operation, the spring also moves up and down, if the spring does not return uniformly, the spherical sealing gasket does not return uniformly, and air leakage is caused. The highest temperature resistance of the compression spring does not exceed 200 ℃, the compression spring can be softened by ultrahigh heat, and further the air leakage can be enlarged. In addition, flange stiffness is insufficient and excessive buckling deformation occurs, which also leads to seal failure.
Disclosure of Invention
The utility model aims at the defect that above-mentioned prior art exists, provide an exhaust manifold and three way catalyst converter seal structure that sealing performance is better.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a sealing structure of an exhaust manifold and a three-way catalyst comprises an exhaust manifold air outlet flange, a three-way catalyst flange and a sealing gasket arranged between the exhaust manifold air outlet flange and the three-way catalyst flange, wherein the exhaust manifold air outlet flange and the three-way catalyst flange are respectively plane flanges, the butt joint surface of the exhaust manifold air outlet flange and the butt joint surface of the three-way catalyst flange are respectively smooth planes, the sealing gasket is a flat graphite gasket, threaded holes with mutually corresponding positions are respectively arranged on the peripheries of the exhaust manifold air outlet flange and the three-way catalyst flange, through holes are arranged at the positions of the sealing gasket, which are mutually corresponding to the threaded holes of the exhaust manifold air outlet flange and the threaded holes of the three-way catalyst flange, the sealing structure also comprises a stud used for connecting the exhaust manifold air outlet flange, the sealing gasket and the three-way catalyst flange, external threads are respectively arranged on the surfaces of studs at two ends of the stud, and, one end of the stud is also provided with a locking nut.
The utility model discloses a further technical scheme is: the exhaust manifold outlet flange and the three-way catalyst flange are made of Q235, and the thicknesses of the exhaust manifold outlet flange and the three-way catalyst flange are 10 mm.
The utility model discloses exhaust manifold and three way catalyst converter seal structure have following beneficial effect: the exhaust manifold outlet flange and the three-way catalyst flange are both planar flanges, the sealing gasket is a flat graphite gasket, the thermal deformation of the flange surface is reduced, and the fastener is not easy to deform by heating; the graphite gasket has proper gasket deformation and resilience force, the exhaust manifold air outlet flange, the three-way catalyst flange and the sealing gasket are locked by the double-end stud with threads at two ends and without threads in the middle through the matching of the locking nut, the sealing performance between the exhaust manifold assembly and the three-way catalyst assembly is better, and the air leakage problem is avoided.
The sealing structure of the exhaust manifold and the three-way catalyst according to the present invention will be further described with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view of a prior art exhaust manifold outlet flange in connection with a three-way catalyst flange and a ball gasket;
FIG. 2 is another directional view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is an exploded view of the exhaust manifold and three-way catalyst seal arrangement of the present invention;
FIG. 5 is a schematic view of the exhaust manifold and three-way catalyst seal structure of the present invention in combination;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
the reference numbers illustrate: the method comprises the following steps of 1-an exhaust manifold air outlet flange I, 2-a spherical sealing gasket, 3-a three-way catalyst flange, 4-an exhaust manifold air outlet connecting pipe, 5-a three-way catalyst front end connecting pipe, 6-a fastener, 7-a bolt, 8-a compression spring, 9-an exhaust manifold air outlet flange, 10-a graphite gasket, 11-a three-way catalyst flange, 12-a threaded hole, 13-a through hole, 14-a stud and 15-a locking nut.
Detailed Description
As shown in fig. 4 to 6, the utility model discloses exhaust manifold and three way catalyst converter seal structure, including exhaust manifold outlet flange 9, three way catalyst converter flange 11 and set up the sealed pad between exhaust manifold outlet flange 9 and three way catalyst converter flange 11. The exhaust manifold outlet flange 9 and the three-way catalyst flange 11 are respectively plane flanges, and the butt joint surface of the exhaust manifold outlet flange 9 and the butt joint surface of the three-way catalyst flange 11 are respectively smooth planes. In the present embodiment, the material of the exhaust manifold outlet flange 9 and the three-way catalyst flange 11 is Q235, and the thickness of the exhaust manifold outlet flange 9 and the three-way catalyst flange 11 is 10 mm. Threaded holes 12 corresponding to each other in position are formed in the peripheries of the exhaust manifold exhaust flange 9 and the three-way catalyst flange 11 respectively, and the three threaded holes 12 are evenly distributed in the exhaust manifold exhaust flange 9 and the three-way catalyst flange 11. The sealing gasket is a flat graphite gasket 10, and through holes 13 are formed in the sealing gasket at positions corresponding to the threaded holes 12 of the exhaust manifold outlet flange 9 and the threaded holes 12 of the three-way catalyst flange 11.
The utility model discloses exhaust manifold and three way catalyst converter seal structure still including the stud 14 that is used for being connected exhaust manifold outlet flange 9, sealed pad and three way catalyst converter flange 11, 14 both ends stud surfaces of stud are equipped with the external screw thread respectively, and stud 14 leans on the smooth surface of middle part position and sealed pad cooperation section for not establishing the external screw thread, and 14 one ends of stud still are furnished with lock nut 15. When the exhaust manifold outlet flange 9, the graphite gasket 10 and the three-way catalyst flange 11 are butted, threaded holes 12 on the exhaust manifold outlet flange 9 and the three-way catalyst flange 11 correspond to each other, through holes 13 on the graphite gasket 10 correspond to the threaded holes 12 on the exhaust manifold outlet flange 9 and the three-way catalyst flange 11 at the same time, and the stud 14 sequentially penetrates through the threaded holes 12 on the exhaust manifold outlet flange 9, the through holes 13 on the graphite gasket 10 and the threaded holes 12 on the three-way catalyst flange 11 and then is screwed tightly to form the exhaust manifold outlet flange three-way catalyst flange.
The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (2)
1. A sealing structure of an exhaust manifold and a three-way catalyst comprises an exhaust manifold outlet flange (9), a three-way catalyst flange (11) and a sealing gasket arranged between the exhaust manifold outlet flange (9) and the three-way catalyst flange (11), and is characterized in that the exhaust manifold outlet flange (9) and the three-way catalyst flange (11) are respectively plane flanges, the butt joint surface of the exhaust manifold outlet flange (9) and the butt joint surface of the three-way catalyst flange (11) are respectively smooth planes, the sealing gasket is a flat graphite gasket (10), the peripheries of the exhaust manifold outlet flange (9) and the three-way catalyst flange (11) are respectively provided with threaded holes (12) with mutually corresponding positions, and the sealing gasket is provided with through holes (13) at the positions corresponding to the threaded holes (12) of the exhaust manifold outlet flange (9) and the threaded holes (12) of the three-way catalyst flange (11), the exhaust manifold sealing gasket is characterized by further comprising a double-end stud (14) used for being connected with an exhaust manifold outlet flange (9), a sealing gasket and a three-way catalyst flange (11), wherein external threads are arranged on the surfaces of studs at two ends of the double-end stud (14) respectively, the outer surface of the middle position, close to the sealing gasket matching section, of the double-end stud (14) is a smooth surface without the external threads, and one end of the double-end stud (14) is also provided with a locking nut (15).
2. The exhaust manifold and three-way catalyst sealing structure according to claim 1, wherein the material of the exhaust manifold outlet flange (9) and the three-way catalyst flange (11) is Q235, and the thickness of the exhaust manifold outlet flange (9) and the three-way catalyst flange (11) is 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021475527.7U CN213175804U (en) | 2020-07-23 | 2020-07-23 | Exhaust manifold and three way catalyst converter seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021475527.7U CN213175804U (en) | 2020-07-23 | 2020-07-23 | Exhaust manifold and three way catalyst converter seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213175804U true CN213175804U (en) | 2021-05-11 |
Family
ID=75794778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021475527.7U Expired - Fee Related CN213175804U (en) | 2020-07-23 | 2020-07-23 | Exhaust manifold and three way catalyst converter seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213175804U (en) |
-
2020
- 2020-07-23 CN CN202021475527.7U patent/CN213175804U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210511 |