CN112267936B - Connection structure of sectional type blast pipe - Google Patents
Connection structure of sectional type blast pipe Download PDFInfo
- Publication number
- CN112267936B CN112267936B CN202011319377.5A CN202011319377A CN112267936B CN 112267936 B CN112267936 B CN 112267936B CN 202011319377 A CN202011319377 A CN 202011319377A CN 112267936 B CN112267936 B CN 112267936B
- Authority
- CN
- China
- Prior art keywords
- pipe
- flange
- exhaust
- exhaust branch
- sealing
- 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.)
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Links
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 32
- 210000001503 joint Anatomy 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 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
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
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- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
Abstract
The invention discloses a connection structure of a sectional exhaust pipe, belongs to the field of connection structures of exhaust pipes, and solves the problems of poor sealing performance and low service life between two adjacent exhaust branch pipes of a traditional sectional exhaust pipe. The connecting structure comprises a corrugated pipe and a V-shaped clamping ring, one end of the corrugated pipe is connected with one of the exhaust branch pipes, a first connecting flange is arranged at the other end of the corrugated pipe, a second connecting flange is arranged at one end of the other exhaust branch pipe, and the first connecting flange is connected with the second connecting flange through the V-shaped clamping ring. The sectional type exhaust pipe connecting structure can effectively improve the sealing performance of the sectional type exhaust pipe and effectively prolong the service life of the exhaust pipe.
Description
Technical Field
The present invention relates to an exhaust pipe connection structure, and more particularly, to a connection structure of a sectional exhaust pipe.
Background
In turbocharged engines with six cylinders or more, a segmented exhaust pipe is commonly used due to the presence of thermal stresses. Between the exhaust branch pipes of the sectional exhaust pipe, it is necessary to consider adding a sealing structure between the exhaust branch pipes due to the sectional structure. As shown in fig. 1, in the conventional connection structure of the sectional exhaust pipe, generally, a sealing ring structure, two adjacent exhaust branch pipes 1 are connected in a mode of butt joint of holes and shafts, and then a sealing rope 2 is placed on a butt joint groove, and the sealing rope is expanded under the heating of the exhaust temperature to realize sealing. Due to emission upgrading and combustion strategy adjustment, the original exhaust temperature of the engine is increased from about 670 ℃ to about 760 ℃, and the original exhaust temperature is influenced by factors of high exhaust temperature, so that the original sealing rope is invalid under high-temperature gas due to the limitation of selected materials and insufficient high-temperature resistance, and sealing failure, air leakage and performance and environmental pollution are easily caused among branch pipes.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and aims to provide a connecting structure of a sectional exhaust pipe, which can effectively improve the sealing performance of the sectional exhaust pipe and effectively prolong the service life of the exhaust pipe.
The technical scheme of the invention is as follows: the utility model provides a connection structure of sectional type blast pipe, includes bellows and V-arrangement snap ring, the one end and one of them exhaust branch pipe connection of bellows, the other end of bellows is equipped with first flange, and the one end of another exhaust branch pipe is equipped with the second flange, first flange pass through V-arrangement snap ring with the second flange and be connected.
As a further improvement, two sides of the inner wall of the V-shaped clamping ring are respectively provided with an inclined compression surface, and correspondingly, one side of the first connecting flange and one side of the second connecting flange are respectively provided with an inclined guide surface, and the inclined compression surfaces are bonded and compressed with the inclined guide surfaces.
Further, a positioning groove is formed in the center of the other side of the first connecting flange, and correspondingly, a positioning column is arranged in the center of the other side of the second connecting flange and is inserted into the positioning groove.
Further, the outer edge of the other side of the first connecting flange is provided with a jointing cambered surface, and correspondingly, the outer edge of the other side of the second connecting flange is provided with a jointing plane.
Further, one end of one of the exhaust branch pipes is further provided with a guide air pipe, and the inner wall of the guide air pipe is aligned with the inner wall of the other exhaust branch pipe.
Further, the guide air pipe is positioned on an exhaust branch pipe at the end opposite to the corrugated pipe, and the guide air pipe is movably inserted into the corrugated pipe.
Advantageous effects
Compared with the prior art, the invention has the following advantages:
1. according to the sectional exhaust pipe connecting structure, two adjacent exhaust branch pipes are connected through the corrugated pipe and are locked by the V-shaped clamping ring, so that the end faces of the connecting flanges between the corrugated pipe and the exhaust branch pipes are tightly attached, high-temperature gas sealing between the two adjacent exhaust branch pipes is realized, the sealing performance of the sectional exhaust pipe can be effectively improved, the service life of the exhaust pipe is effectively prolonged, and the problems of insufficient supercharging pressure, abnormal EGR, atmosphere pollution and the like of an engine supercharger caused by air leakage are solved; and because of the elastic deformation capability of the corrugated pipe, the expansion of the exhaust pipe at high temperature can be eliminated, and the reliability of the exhaust pipe is further improved.
2. According to the invention, one side surface of the first connecting flange is a joint cambered surface, one side surface of the second connecting flange is a joint plane, when the V-shaped clamping ring is locked, the joint cambered surface and the joint plane are mutually tightly adhered, and due to the existence of the joint cambered surface, the sealing band between the joint cambered surface and the joint plane is a circular line, the line sealing mode of the sealing band is opposite to the structure of the surface sealing, the problems caused by uneven processing, defects and the like of the sealing plane can be eliminated, the contact area of the line sealing is small, the pressure intensity is large, and the sealing capability for high-temperature high-pressure exhaust is stronger.
3. According to the invention, the guide air pipe is inserted into the corrugated pipe, so that the problems of increased exhaust back pressure and reduced economic performance of the engine caused by interference and resistance due to circulation of high-temperature flowing air on the uneven surface in the corrugated pipe are avoided, and the exhaust is smoother.
Drawings
FIG. 1 is a schematic perspective view of a prior art;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is an enlarged schematic view of the junction between two adjacent exhaust branch pipes according to the present invention;
fig. 4 is an enlarged schematic view of the structure at a in fig. 3.
Wherein: the device comprises a 1-exhaust branch pipe, a 2-sealing rope, a 3-corrugated pipe, a 4-V-shaped clamping ring, a 5-first connecting flange, a 6-second connecting flange, a 7-inclined compression surface, an 8-inclined guide surface, a 9-positioning groove, a 10-positioning column, an 11-bonding cambered surface, a 12-bonding plane and a 13-guiding air pipe.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Referring to fig. 2-4, the connection structure of the sectional exhaust pipe of the present invention includes a bellows 3 and a V-shaped snap ring 4, wherein one end of the bellows 3 is connected with one of the exhaust branch pipes 1, specifically, the bellows 3 is welded with the exhaust branch pipe 1, a first connection flange 5 is disposed at the other end of the bellows 3, the connection flange 5 and the bellows 3 are in an integrated structure, a second connection flange 6 is disposed at one end of the other exhaust branch pipe 1, the second connection flange 6 and the exhaust branch pipe 1 are in an integrated structure, the first connection flange 5 and the second connection flange 6 are connected through the V-shaped snap ring 4, and connection sealing of two adjacent exhaust branch pipes 1 is achieved.
According to the sectional exhaust pipe connecting structure, the two adjacent exhaust branch pipes 1 are connected through the corrugated pipe 3 and locked by the V-shaped clamping ring 4, so that the end faces of the connecting flanges between the corrugated pipe 3 and the exhaust branch pipes 1 are tightly attached to each other, high-temperature gas sealing between the two adjacent exhaust branch pipes 1 is realized, the sealing performance of the sectional exhaust pipe can be effectively improved, the service life of the exhaust pipe is effectively prolonged, and the problems of insufficient supercharging pressure of an engine supercharger, abnormal EGR, atmosphere pollution caused by air leakage and the like are solved; and because of the elastic deformation capability of the corrugated pipe 3, the expansion of the exhaust pipe at high temperature can be eliminated, and the reliability of the exhaust pipe is further improved.
Preferably, both sides of the inner wall of the V-shaped clamping ring 4 are respectively provided with an inclined pressing surface 7, and correspondingly, one side of the first connecting flange 5 and one side of the second connecting flange 6 are respectively provided with an inclined guiding surface 8, wherein the inclined pressing surfaces 7 are attached to and pressed against the inclined guiding surfaces 8, and when the V-shaped clamping ring 4 is assembled, the inclined pressing surfaces 7 continuously press the inclined guiding surfaces 8 along with the continuous tensioning of bolts of the V-shaped clamping ring 4, so that the end surfaces of the two connecting flanges are attached to each other, and the sealing performance is ensured.
Preferably, a positioning groove 9 is arranged in the center of the other side of the first connecting flange 5, and correspondingly, a positioning column 10 is arranged in the center of the other side of the second connecting flange 6, wherein the positioning column 10 is inserted into the positioning groove 9, and the positioning mode of matching the positioning column 10 with the positioning groove 9 is adopted, so that the butt joint connection of the two connecting flanges is facilitated.
Preferably, the outer edge of the other side of the first connecting flange 5 is provided with a jointing cambered surface 11, the jointing cambered surface 11 is positioned at the outer edge of the positioning groove 9, correspondingly, the outer edge of the other side of the second connecting flange 6 is provided with a jointing plane 12, the jointing plane 12 is positioned at the outer edge of the positioning column 10, when the V-shaped clamping ring 4 is locked, the jointing cambered surface 11 and the jointing plane 12 are mutually stuck tightly, and due to the existence of the jointing cambered surface 11, the sealing belt between the jointing cambered surface 11 and the jointing cambered surface is a circular line, the sealing form of the sealing belt is opposite to the structure of the surface sealing, the problems caused by uneven processing, defects and the like of the sealing plane can be eliminated, the contact area of the line sealing is small, the pressure is large, and the sealing capability of the sealing of high-temperature high-pressure exhaust gas is stronger.
Preferably, a guide air pipe 13 is further provided at one end of one of the exhaust branch pipes 1, and an inner wall of the guide air pipe 13 is aligned with an inner wall of the other exhaust branch pipe 1. By inserting a guide air pipe 13 in the corrugated pipe 3, the problems of increased exhaust back pressure and reduced economic performance of the engine caused by interference and resistance due to the fact that high-temperature flowing air circulates on the uneven surface in the corrugated pipe are avoided, and the exhaust is smoother. Further, the guiding air pipe 13 is located on one exhaust branch pipe 1 at the end opposite to the corrugated pipe 3, and the guiding air pipe 13 is movably inserted into the corrugated pipe 3, so that the guiding air pipe 13 and the exhaust branch pipe 1 cannot interfere in the deformation process of the corrugated pipe 3.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (1)
1. The utility model provides a connection structure of sectional type blast pipe, its characterized in that includes bellows (3) and V-arrangement snap ring (4), the one end and one of them exhaust branch pipe (1) of bellows (3) are connected, the other end of bellows (3) is equipped with first flange (5), the one end of another exhaust branch pipe (1) is equipped with second flange (6), first flange (5) and second flange (6) pass through V-arrangement snap ring (4) to be connected, V-arrangement snap ring (4) inner wall both sides all be equipped with oblique compression face (7), corresponding, one side of first flange (5) and second flange (6) all be equipped with oblique guide face (8), oblique compression face (7) and oblique guide face (8) laminating, the opposite side center of first flange (5) is equipped with constant head tank (9), corresponding, the opposite side center of second flange (6) is equipped with reference column (10), reference column (10) in constant head tank (9) in, one side flange (5) are equipped with outer fringe (12) of corresponding flange (1) of the outer fringe of connecting branch pipe (6), the inner wall of the guide air pipe (13) is aligned with the inner wall of the other exhaust branch pipe (1), the guide air pipe (13) is positioned on one exhaust branch pipe (1) at the end opposite to the corrugated pipe (3), and the guide air pipe (13) is movably inserted into the corrugated pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319377.5A CN112267936B (en) | 2020-11-23 | 2020-11-23 | Connection structure of sectional type blast pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319377.5A CN112267936B (en) | 2020-11-23 | 2020-11-23 | Connection structure of sectional type blast pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112267936A CN112267936A (en) | 2021-01-26 |
| CN112267936B true CN112267936B (en) | 2024-03-26 |
Family
ID=74339330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011319377.5A Active CN112267936B (en) | 2020-11-23 | 2020-11-23 | Connection structure of sectional type blast pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112267936B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914984A (en) * | 2021-11-08 | 2022-01-11 | 中车大连机车车辆有限公司 | Exhaust pipe, corrugated pipe assembly and design method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2305991A1 (en) * | 2009-09-25 | 2011-04-06 | Volkswagen Aktiengesellschaft | Combustion engine with an exhaust gas turbocharger and an exhaust gas return system |
| CN208138033U (en) * | 2018-05-03 | 2018-11-23 | 陕西柴油机重工有限公司 | Fixture block sliding tightening Formula V type groove clip |
-
2020
- 2020-11-23 CN CN202011319377.5A patent/CN112267936B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2305991A1 (en) * | 2009-09-25 | 2011-04-06 | Volkswagen Aktiengesellschaft | Combustion engine with an exhaust gas turbocharger and an exhaust gas return system |
| CN208138033U (en) * | 2018-05-03 | 2018-11-23 | 陕西柴油机重工有限公司 | Fixture block sliding tightening Formula V type groove clip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112267936A (en) | 2021-01-26 |
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