CN216198421U - Sealing structure of exhaust pipe and engine - Google Patents
Sealing structure of exhaust pipe and engine Download PDFInfo
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- CN216198421U CN216198421U CN202122315810.4U CN202122315810U CN216198421U CN 216198421 U CN216198421 U CN 216198421U CN 202122315810 U CN202122315810 U CN 202122315810U CN 216198421 U CN216198421 U CN 216198421U
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Abstract
The utility model discloses a sealing structure of an exhaust pipe and an engine, and relates to the technical field of engines. The sealing structure of the exhaust pipe is arranged along the axial direction of the male head and the female head of the exhaust pipe, a sealing ring is arranged between the male head and the female head of the exhaust pipe, one of the male head and the female head of the exhaust pipe is welded with one end of the sealing ring, and the other end of the male head and the female head of the exhaust pipe is abutted against the other end of the sealing ring; the exhaust pipe joint abutted with the sealing ring comprises a first abutting surface and a second abutting surface, when the female head of the exhaust pipe is spliced with the male head of the exhaust pipe, the sealing ring is abutted with the first abutting surface, and a gap is reserved between the sealing ring and the second abutting surface; when the exhaust pipe is heated, the sealing ring can be abutted against the second abutting surface. The sealing structure of the exhaust pipe does not need to be provided with a sealing ring independently, is easy to operate and improves the installation efficiency; after the exhaust pipe is heated, a second seal is formed between the sealing ring and the exhaust pipe joint abutted against the sealing ring, and the sealing effect is better.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to a sealing structure of an exhaust pipe and an engine.
Background
The multi-section exhaust pipe is widely applied to a multi-cylinder engine, the interface of the multi-section exhaust pipe is in a high-temperature and vibrating working environment, and the joint of each section of exhaust pipe is easy to leak gas.
As shown in fig. 1, in the sectional type exhaust pipe commonly used at present, a sealing ring 3 ' and a braided ring 4 ' are installed between a male head 1 ' and a female head 2 ' of the exhaust pipe, the sealing ring 3 ' and the braided ring 4 ' are independent parts, a special tool is required to be separately installed, production efficiency is affected, and the sealing ring 3 ' is easily toppled over in the installation process, so that sealing failure is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sealing structure of an exhaust pipe and an engine, and the engine with the sealing structure of the exhaust pipe can improve the installation efficiency and has better sealing performance of the exhaust pipe.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a sealing structure of an exhaust pipe is characterized in that the exhaust pipes are connected through an exhaust pipe connector, the exhaust pipe connector comprises an exhaust pipe male head and an exhaust pipe female head, the exhaust pipe male head is inserted into the exhaust pipe female head, a sealing ring is arranged between the exhaust pipe male head and the exhaust pipe female head along the axial direction of the exhaust pipe male head and the exhaust pipe female head, one of the exhaust pipe male head and the exhaust pipe female head is connected with one end of the sealing ring in a welding mode, and the other exhaust pipe male head and the exhaust pipe female head are abutted against the other end of the sealing ring; the exhaust pipe joint abutted with the sealing ring comprises a first abutting surface and a second abutting surface, when the exhaust pipe female head is spliced with the exhaust pipe male head, the sealing ring is abutted with the first abutting surface, and a gap is reserved between the second abutting surface and the sealing ring; when the exhaust pipe is heated, the sealing ring can be abutted against the second abutting surface.
As an alternative to the sealing structure of the exhaust pipe, the sealing ring includes a first sealing surface and a second sealing surface, the first sealing surface is perpendicular to the second sealing surface, one of the first sealing surface and the second sealing surface is welded to the exhaust pipe joint, and the other of the first sealing surface and the second sealing surface abuts against the exhaust pipe joint.
As an alternative of the sealing structure of the exhaust pipe, the sealing ring further comprises an arc-shaped sealing surface, the arc-shaped sealing surface is arranged between the first sealing surface and the second sealing surface, and when the female head of the exhaust pipe is inserted into the male head of the exhaust pipe, a gap is reserved between the arc-shaped sealing surface and the second abutting surface; the exhaust pipe is heated, and the arc-shaped sealing surface can be abutted against the second abutting surface.
As an alternative of the sealing structure of the exhaust pipe, the first sealing surface is welded on the inner wall of the male end of the exhaust pipe, the second sealing surface abuts against the first abutting surface of the female end of the exhaust pipe, and a gap is reserved between the second abutting surface of the female end of the exhaust pipe and the arc-shaped sealing surface; the exhaust pipe is heated, and the arc-shaped sealing surface can be abutted to the second abutting surface of the female head of the exhaust pipe.
As an alternative of the sealing structure of the exhaust pipe, the second sealing surface is welded on the inner wall of the exhaust pipe female head, the first sealing surface abuts against the first abutting surface of the exhaust pipe male head, and a gap is reserved between the second abutting surface of the exhaust pipe male head and the arc-shaped sealing surface; the exhaust pipe is heated, and the arc-shaped sealing surface can be abutted against the second abutting surface of the male head of the exhaust pipe.
As an alternative of the sealing structure of the exhaust pipe, one end of the exhaust pipe female head connected with the exhaust pipe male head is provided with a stepped hole, the stepped hole comprises a first stepped hole, the exhaust pipe male head is inserted into the first stepped hole, and the sealing ring is arranged at the bottom of the first stepped hole.
As an alternative of the sealing structure of the exhaust pipe, the stepped hole further comprises a second stepped hole, the second stepped hole and the first stepped hole are sequentially arranged along the inserting direction of the male head of the exhaust pipe, a limiting table is arranged on the periphery of the male head of the exhaust pipe, the second stepped hole is matched with the limiting table, and the female head of the exhaust pipe can be limited to be inserted into the maximum depth of the male head of the exhaust pipe.
As an alternative of the sealing structure of the exhaust pipe, a first gap is reserved between the sealing ring and the end face of the male head of the exhaust pipe, and a second gap is reserved between the sealing ring and the inner wall of the female head of the exhaust pipe.
As an alternative of the sealing structure of the exhaust pipe, a third gap is reserved between the limiting table and the second step hole, the third gap is adjustable, and the third gap is smaller than the first gap.
An engine comprising an exhaust pipe and a sealing structure for the exhaust pipe according to any preceding claim, the exhaust pipe being segmented, the segmented exhaust pipes being connected by the sealing structure for the exhaust pipe.
The utility model has the beneficial effects that:
according to the sealing structure of the exhaust pipe, the exhaust pipe joint comprises the exhaust pipe female head and the exhaust pipe male head, the sealing ring is welded with one of the exhaust pipe female head and the exhaust pipe male head, and after the exhaust pipe male head is inserted into the exhaust pipe female head, the sealing ring can be abutted against the other, so that sealing between the exhaust pipe female head and the exhaust pipe male head is realized, the sealing ring does not need to be independently installed, the installation is simple, the operation is easy, and the installation efficiency is improved. The exhaust pipe abutted with the sealing ring comprises a first abutting surface and a second abutting surface, when the exhaust pipe is installed, the sealing ring is abutted with the first abutting surface, and a first seal is formed between the sealing ring and the exhaust pipe abutted with the sealing ring. The heat transfer that engine work produced to the blast pipe, and the blast pipe is heated the back, and the axial clearance between the female head of blast pipe and the blast pipe public head reduces, and one side that the sealing ring is close to the butt end is compressed and is faced backwards for sealing ring and second butt face butt form the second between the sealing ring and the blast pipe joint rather than the butt and say sealedly, sealed effect is better.
The engine provided by the utility model comprises the exhaust pipes and the sealing structure of the exhaust pipes, wherein the exhaust pipes are sectional exhaust pipes, and the sectional exhaust pipes are sealed through the sealing structure of the exhaust pipes. According to the engine provided by the utility model, the sealing ring is welded and connected with the exhaust pipe male head or the exhaust pipe female head, and during installation, installation can be completed only by inserting the exhaust pipe male head and the exhaust pipe female head, so that the sealing ring is not required to be installed independently, and the installation efficiency is improved; and when the engine works, the exhaust pipe is heated, and a seal is formed between the sealing ring and the exhaust pipe joint abutted against the sealing ring, so that the sealing effect is better.
Drawings
FIG. 1 is a schematic view of a sealing structure of an exhaust pipe provided in the prior art;
FIG. 2 is an assembly view of a sealing structure of an exhaust pipe according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic structural diagram of a sealing structure of an exhaust pipe according to an embodiment of the present invention when heated;
FIG. 5 is a partial enlarged view at B in FIG. 4;
fig. 6 is a schematic structural view of a sealing structure of an exhaust pipe according to a second embodiment of the present invention when heated;
fig. 7 is a partially enlarged view at C in fig. 6.
In the figure:
1' and a male exhaust pipe head; 2', an exhaust pipe female head; 3', a seal ring; 4', braided loops;
1. a male end of the exhaust pipe; 2. a female end of the exhaust pipe; 3. a seal ring; 4. a first gap; 5. a second gap; 6. a third gap;
21. a first abutting surface of the exhaust pipe female head; 22. a second abutting surface of the exhaust pipe female head; 31. a first sealing surface; 32. a second sealing surface; 33. an arcuate seal face.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
The embodiment provides an engine, including blast pipe and the seal structure of blast pipe, the blast pipe is the sectional type, and the blast pipe of sectional type passes through the seal structure of blast pipe and connects.
The sectional type exhaust pipe generally comprises at least two sections of exhaust pipes, the two adjacent sections of exhaust pipes are connected through an exhaust pipe connector, the exhaust pipe connector comprises an exhaust pipe male head and an exhaust pipe female head, the exhaust pipe male head is arranged at one end of one section of exhaust pipe, the exhaust pipe female head is arranged at one end of the other section of exhaust pipe, and the exhaust pipe male head is inserted into the exhaust pipe female head to connect the two sections of exhaust pipes.
In order to ensure the working performance of the engine and avoid the gas exhausted from the exhaust pipe from leaking from the exhaust pipe joint between the two sections of exhaust pipes, an exhaust pipe sealing structure is arranged between the male end of the exhaust pipe and the female end of the exhaust pipe.
According to the engine provided by the embodiment, when the two exhaust pipes are connected, a sealing ring does not need to be independently installed, so that the installation efficiency is improved; and when the engine works, the sealing effect of the exhaust pipe is better.
As shown in fig. 2 and fig. 3, the present embodiment further provides a sealing structure of an exhaust pipe, wherein a sealing ring 3 is disposed between the male exhaust pipe head 1 and the female exhaust pipe head 2 along the axial direction of the male exhaust pipe head 1 and the female exhaust pipe head 2, one of the male exhaust pipe head 1 and the female exhaust pipe head 2 is welded to one end of the sealing ring 3, and the other one is abutted to the other end of the sealing ring 3; the exhaust pipe joint abutted with the sealing ring 3 comprises a first abutting surface and a second abutting surface, when the exhaust pipe female head 2 is spliced with the exhaust pipe male head 1, the sealing ring 3 is abutted with the first abutting surface, and a gap is reserved between the sealing ring 3 and the second abutting surface; when the exhaust pipe is heated, the sealing ring 3 can abut against the second abutting surface.
The seal structure of blast pipe that this embodiment provided, blast pipe joint include female 2 of blast pipe and the public first 1 of blast pipe, in the female two of 2 of blast pipe and the public first 1 of blast pipe, sealing ring 3 and one of them welding, insert the public first 1 of blast pipe into the female first 2 back of blast pipe, sealing ring 3 can with another butt, thereby realize the sealed between the public first 1 of blast pipe 2 and blast pipe, need not to install sealing ring 3 alone, the installation is simple, and easy operation has improved the installation effectiveness. The exhaust pipe abutting against the seal ring 3 includes a first abutting surface and a second abutting surface, and when the exhaust pipe is mounted, the seal ring 3 abuts against the first abutting surface, and a first seal is formed between the seal ring 3 and the exhaust pipe abutting against the seal ring. Heat transfer to blast pipe that engine work produced, the blast pipe is heated the back, and the axial clearance between the public head 1 of blast pipe female head 2 and blast pipe reduces, and the sealing ring is close to one side of butt end and is followed the face upward by the compression for sealing ring 3 and second butt face butt form the second between sealing ring 3 and the blast pipe joint rather than the butt and say sealedly, and sealed effect is better.
In the present embodiment, the exhaust pipe female head 2 and the exhaust pipe male head 1 are both made of cast iron, and the seal ring 3 is made of stainless steel. The temperature of the exhaust gas from the exhaust pipe during operation of the engine is about 500 c, and therefore the exhaust pipe, the exhaust pipe joint and the seal ring 3 must be resistant to high temperatures. Both cast iron and stainless steel are resistant to high temperatures.
In the female head 2 of blast pipe is inserted to the public head 1 of the convenience of being in with the blast pipe, the one end that the public head 1 of blast pipe 2 and blast pipe are connected sets up to the shoulder hole, and the shoulder hole includes first shoulder hole, and the public head 1 of blast pipe inserts first shoulder hole downtheholely, and sealing ring 3 sets up in the bottom of first shoulder hole. The end face of the male head 1 of the exhaust pipe is provided with a chamfer, and the male head 1 of the exhaust pipe is inserted into the female head 2 of the exhaust pipe to play a role in guiding. After the public head 1 of blast pipe inserted first shoulder hole, set up sealing ring 3 between the terminal surface of the public head 1 of blast pipe and the bottom in first shoulder hole, the one end and the female head 2 welding of blast pipe of sealing ring 3, the other end forms sealedly with the public first 1 butt of blast pipe to guarantee the leakproofness between the public head 1 of the female head 2 of blast pipe and blast pipe. Or one end of the sealing ring 3 is welded with the exhaust pipe male head 1, and the other end of the sealing ring is abutted with the exhaust pipe female head 2 to form sealing.
Optionally, when inserting the public head 1 of blast pipe into the first step hole of the female head 2 of blast pipe, in order to avoid the public head 1 of blast pipe inserted degree of depth too big, extrusion sealing ring 3 causes the damage to sealing ring 3. The shoulder hole still includes the second shoulder hole, and second shoulder hole and first shoulder hole set gradually along the public first 1 direction of pegging graft of blast pipe, and the public first 1 periphery of blast pipe is provided with spacing platform, and second shoulder hole and spacing platform cooperation can restrict the female first 2 maximum depth that inserts the public first 1 of blast pipe. When spacing platform and the bottom butt in second step hole, for the public first 2 the maximum degree of depth of inserting the female head of blast pipe 2 of blast pipe 1.
Optionally, a first gap 4 is left between the sealing ring 3 and the end face of the exhaust pipe male head 1, and a second gap 5 is left between the sealing ring 3 and the inner wall of the exhaust pipe female head 2. When the public head 1 of blast pipe inserts in the female head 2 of blast pipe, form between the inner wall of the public head 1 of sealing ring 3 and blast pipe sealed, the bottom of the first shoulder hole of the public head 2 of sealing ring 3 and blast pipe forms sealedly to make through the gas of blast pipe combustion gas can not reveal. The arrangement of the first gap 4 prevents the sealing ring 3 from being damaged by the insertion force when the male exhaust pipe head 1 is inserted into the female exhaust pipe head 2; on the other hand, during engine operation, a certain deformation space is left for the sealing ring 3 to form a second seal. The arrangement of the second gap 5 is convenient for the male head 1 of the exhaust pipe to be inserted into the female head 2 of the exhaust pipe on one hand, so that the sealing ring 3 cannot generate friction with the inner wall of the female head 2 of the exhaust pipe; on the other hand, during engine operation, a certain deformation space is left for the sealing ring 3 to form a second seal.
It should be noted that, because the sealing ring 3 is welded to one of the exhaust pipe joints, there is no gap between the exhaust pipe and the sealing ring 3, which can ensure the sealing performance. On the other hand, the sealing performance of the exhaust pipe joint that forms a seal by abutting against the seal ring 3 cannot be ensured, and in order to improve the sealing effect, a second seal is usually provided on the side of the exhaust pipe joint that abuts against the seal ring 3.
Because the deformation of the sealing ring 3 and the exhaust pipe caused by thermal deformation is related to a plurality of conditions such as material and temperature, a third gap 6 is reserved between the limiting table and the second stepped hole, the third gap 6 is adjustable, and the third gap 6 is smaller than the first gap 4. The third gap 6 is arranged to be adjustable and the maximum gap at which the third gap 6 is adjustable is smaller than the first gap 4. The installer can adjust the depth of the exhaust pipe male head 1 inserted into the exhaust pipe female head 2 according to the exhaust temperature and other conditions when inserting the exhaust pipe male head 1 into the exhaust pipe female head 2, so as to ensure the first gap 4. Even when spacing platform and the bottom butt of second shoulder hole, first clearance 4 still exists, for sealing ring 3 provides the deformation space, and can not damage sealing ring 3.
As an alternative to the sealing structure of the exhaust pipe, the sealing ring 3 includes a first sealing surface 31 and a second sealing surface 32, the first sealing surface 31 is perpendicular to the second sealing surface 32, one of the first sealing surface 31 and the second sealing surface 32 is welded to the exhaust pipe joint, and the other is abutted against the exhaust pipe joint. In the present embodiment, the first sealing surface 31 is provided near the side of the exhaust pipe male 1, and the first sealing surface 31 is welded to or abutted against the inner wall of the exhaust pipe male 1. The second sealing surface 32 is provided on a side close to the exhaust pipe female head 2, and the second sealing surface 32 is abutted against or welded to the bottom of the first stepped hole of the exhaust pipe female head 2.
As an alternative of the sealing structure of the exhaust pipe, the sealing ring 3 further comprises an arc-shaped sealing surface 33, the arc-shaped sealing surface 33 is arranged between the first sealing surface 31 and the second sealing surface 32, and when the exhaust pipe female head 2 is inserted into the exhaust pipe male head 1, a gap is reserved between the arc-shaped sealing surface 33 and the second abutting surface; the exhaust pipe is heated, and the arc-shaped sealing surface 33 can abut against the second abutting surface. The arcuate sealing surface 33 is used to join the first sealing surface 31 and the second sealing surface 32. A first gap 4 is formed between the arc-shaped sealing surface 33 and the end surface of the exhaust pipe male head 1, and a second gap 5 is formed between the arc-shaped sealing surface 33 and the inner wall of the first stepped hole of the exhaust pipe female head 2. The specific value of the first gap 4 and the specific value of the second gap 5 need to be set according to the forming position of the second seal, and the conditions such as the heating temperature and the deformation coefficient of the seal ring 3 are comprehensively considered.
In the sealing ring 3 provided by the embodiment, the first sealing surface 31 is welded with the exhaust pipe male head 1, and the sealing performance of the welded connection is not affected by external conditions such as thermal deformation of the exhaust pipe and the sealing ring 3; the second seal surface 32 abuts against the exhaust pipe female head 2, and the effect of sealing by abutment is affected by conditions such as deformation or stress of the seal ring 3, and is liable to fail. Therefore, the present embodiment provides a sealing structure for an exhaust pipe, in which the exhaust pipe is deformed by heat during the operation of the engine, and a second seal is formed at the second gap 5.
As shown in fig. 4 and 5, the first sealing surface 31 is welded to the inner wall of the exhaust pipe male 1, the second sealing surface 32 abuts against the first abutting surface 21 of the exhaust pipe female, and a gap is left between the second abutting surface 22 of the exhaust pipe female and the arc-shaped sealing surface 33; the exhaust pipe is heated, and the arc-shaped sealing surface 33 can abut against the second abutting surface 22 of the exhaust pipe female head. In this embodiment, the first abutting surface 21 of the exhaust pipe female head is the bottom of the first stepped hole, and the second abutting surface 22 of the exhaust pipe female head is the inner wall of the first stepped hole. With the arrangement, when the exhaust pipe is heated, two seals are formed between the exhaust pipe female head 2 and the sealing ring 3, so that gas leakage caused by sealing failure between the second sealing surface 32 and the bottom of the first stepped hole is prevented.
Example two
The present embodiment further provides a sealing structure of an exhaust pipe, and the sealing ring 3 has a structure substantially the same as that of the sealing ring 3 provided in the first embodiment, and is not described herein again.
The difference between this embodiment and the first embodiment is: the connection mode of the sealing ring 3 and the exhaust pipe female head 2/the exhaust pipe male head 1 is different, and the position for forming the second sealing is different.
As shown in fig. 6 and 7, in the present embodiment, the second sealing surface 32 is welded to the inner wall of the exhaust pipe female head 2, the first sealing surface 31 abuts against the first abutting surface of the exhaust pipe male head, and a gap is left between the second abutting surface of the exhaust pipe male head and the arc-shaped sealing surface 33; the exhaust pipe is heated and the arcuate sealing surface 33 can abut against the second abutment surface of the male end of the exhaust pipe. In this embodiment, the second sealing surface 32 is welded to the bottom of the first stepped hole of the exhaust pipe female head 2, the first abutting surface of the exhaust pipe male head is the inner wall of the exhaust pipe male head 1, and the second abutting surface of the exhaust pipe male head is the end surface of the exhaust pipe male head 1. With the arrangement, two seals are formed between the volatile exhaust pipe male head 1 and the sealing ring 3 to ensure the sealing performance.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. The sealing structure of the exhaust pipe is characterized in that a sealing ring (3) is arranged between the male exhaust pipe head (1) and the female exhaust pipe head (2) along the axial direction of the male exhaust pipe head (1) and the female exhaust pipe head (2), one of the male exhaust pipe head (1) and the female exhaust pipe head (2) is connected with one end of the sealing ring (3) in a welding manner, and the other one of the male exhaust pipe head (1) and the female exhaust pipe head (2) is connected with the other end of the sealing ring (3) in a butting manner; the exhaust pipe joint abutted with the sealing ring (3) comprises a first abutting surface and a second abutting surface, when the exhaust pipe female head (2) is spliced with the exhaust pipe male head (1), the sealing ring (3) is abutted with the first abutting surface, and a gap is reserved between the second abutting surface and the sealing ring (3); when the exhaust pipe is heated, the sealing ring (3) can be abutted against the second abutting surface.
2. The sealing structure of an exhaust pipe according to claim 1, wherein the sealing ring (3) includes a first sealing surface (31) and a second sealing surface (32), the first sealing surface (31) is perpendicular to the second sealing surface (32), and one of the first sealing surface (31) and the second sealing surface (32) is welded to the exhaust pipe joint and the other is abutted against the exhaust pipe joint.
3. The sealing structure of the exhaust pipe according to claim 2, wherein the sealing ring (3) further comprises an arc-shaped sealing surface (33), the arc-shaped sealing surface (33) is arranged between the first sealing surface (31) and the second sealing surface (32), and when the exhaust pipe female head (2) is plugged with the exhaust pipe male head (1), a gap is left between the arc-shaped sealing surface (33) and the second abutting surface; when the exhaust pipe (3) is heated, the arc-shaped sealing surface (33) can be abutted against the second abutting surface.
4. The sealing structure of an exhaust pipe according to claim 3, wherein the first sealing surface (31) is welded to the inner wall of the male exhaust pipe head (1), the second sealing surface (32) abuts against the first abutting surface (21) of the female exhaust pipe head, and a gap is left between the second abutting surface (22) of the female exhaust pipe head and the arc-shaped sealing surface (33); the exhaust pipe is heated, and the arc-shaped sealing surface (33) can be abutted against the second abutting surface (22) of the exhaust pipe female head.
5. The seal structure of an exhaust pipe according to claim 3, wherein the second seal surface (32) is welded to an inner wall of the exhaust pipe female head (2), the first seal surface (31) abuts against a first abutting surface of the exhaust pipe male head, and a gap is left between the second abutting surface of the exhaust pipe male head and the arc-shaped seal surface (33); the exhaust pipe is heated, and the arc-shaped sealing surface (33) can be abutted against the second abutting surface of the male head of the exhaust pipe.
6. The sealing structure of the exhaust pipe according to any one of claims 1 to 5, wherein one end of the exhaust pipe female head (2) connected to the exhaust pipe male head (1) is provided as a stepped hole, the stepped hole comprises a first stepped hole, the exhaust pipe male head (1) is inserted into the first stepped hole, and the sealing ring (3) is provided at the bottom of the first stepped hole.
7. The sealing structure of the exhaust pipe according to claim 6, wherein the stepped hole further comprises a second stepped hole, the second stepped hole and the first stepped hole are sequentially arranged along the plugging direction of the male head (1) of the exhaust pipe, a limiting table is arranged on the periphery of the male head (1) of the exhaust pipe, and the second stepped hole is matched with the limiting table to limit the maximum depth of the female head (2) of the exhaust pipe inserted into the male head (1) of the exhaust pipe.
8. The seal structure of an exhaust pipe according to claim 7, wherein a first gap (4) is left between the seal ring (3) and the end face of the exhaust pipe male head (1), and a second gap (5) is left between the seal ring (3) and the inner wall of the exhaust pipe female head (2).
9. The sealing structure of an exhaust pipe according to claim 8, wherein a third gap (6) is left between the limit table and the second stepped hole, the third gap (6) is adjustable, and the third gap (6) is smaller than the first gap (4).
10. An engine comprising an exhaust pipe and a seal structure of the exhaust pipe according to any one of claims 1 to 9, wherein the exhaust pipe is segmented, and the segmented exhaust pipe is connected by the seal structure of the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122315810.4U CN216198421U (en) | 2021-09-24 | 2021-09-24 | Sealing structure of exhaust pipe and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122315810.4U CN216198421U (en) | 2021-09-24 | 2021-09-24 | Sealing structure of exhaust pipe and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216198421U true CN216198421U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122315810.4U Active CN216198421U (en) | 2021-09-24 | 2021-09-24 | Sealing structure of exhaust pipe and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216198421U (en) |
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2021
- 2021-09-24 CN CN202122315810.4U patent/CN216198421U/en active Active
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Effective date of registration: 20230109 Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: WEICHAI POWER Co.,Ltd. Patentee after: Baldwin (Weifang) Power Co.,Ltd. Address before: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee before: WEICHAI POWER Co.,Ltd. |
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