CN215635588U - Flange seal structure, engine and vehicle - Google Patents
Flange seal structure, engine and vehicle Download PDFInfo
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- CN215635588U CN215635588U CN202121548339.7U CN202121548339U CN215635588U CN 215635588 U CN215635588 U CN 215635588U CN 202121548339 U CN202121548339 U CN 202121548339U CN 215635588 U CN215635588 U CN 215635588U
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Abstract
The utility model discloses a flange sealing structure, an engine and a vehicle, and belongs to the technical field of vehicles. The first flange is connected to the end part of the first pipeline; the second flange is connected to the end part of the second pipeline; the butt joint surface of the first flange is abutted against the butt joint surface of the second flange, and the butt joint surface of the first flange and/or the butt joint surface of the second flange is/are provided with installation positioning grooves; the elastic gasket assembly is arranged in the installation positioning groove, and the inner ring side wall and the outer ring side wall of the elastic gasket assembly are respectively abutted against the inner ring side wall and the outer ring side wall of the installation positioning groove; when the abutting surface of the first flange abuts the abutting surface of the second flange, the first flange and the second flange compress the resilient gasket assembly and deform the resilient gasket assembly. The flange sealing structure has good sealing performance, and the gasket is convenient to install and position, thereby ensuring the safe use of the engine and the vehicle and improving the manufacturing efficiency of the engine and the vehicle.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a flange sealing structure, an engine and a vehicle.
Background
At present, a plurality of flange sealing structures applying metal gaskets are arranged on an engine, two pipeline joint parts are provided with two flanges, the metal gaskets are added in the middle of the two flanges, then the two flanges are screwed down by bolts, and the metal gaskets in the middle are compressed to realize sealing. It is common to seal high temperature locations such as cylinder heads, exhaust pipes, EGR coolers, etc.
As shown in fig. 1, in a conventional flange sealing structure, two flange butt joint surfaces are two planes, an inner ring in the middle of a metal gasket is provided with two convex structures 1', and an outer ring of the metal gasket is provided with three layers of parallel metal sheets; the metal gasket is positioned through the bolt hole corresponding to the flange; after the bolts are screwed down, the plane of the flange can compress the metal convex structure 1 ', and a sealing strip is formed by the pressure of the convex structure 1' to realize the sealing of the two flanges. Such a flange seal structure has the following disadvantages:
1. the amount of compression of the metal gasket is not precise. Theoretically, the compression amount of the convex structure 1 ' of the metal gasket is the height difference between the height of the convex structure 1 ' and the height of the three layers of parallel metal sheets, but the three layers of parallel metal sheets also have the problem of compression, so the compression amount of the convex structure 1 ' is not accurate, and if the compression amount cannot reach the set compression amount, the sealing performance of the flange sealing structure is poor; the leakage problem of the sealing part is caused frequently and is an important factor in oil leakage, air leakage and water leakage faults of the engine;
2. after the bolt is screwed down, stress is released along with the compression deformation of the metal gasket, and the torque of the bolt is reduced along with the stress, namely the pretightening force of the bolt is reduced (sometimes reaching a specified value of 50% pretightening force), the pressure for compressing the metal gasket is reduced, so that the sealing effect is reduced, the numerical value of the pressure reduction cannot be accurately mastered, and the reduced numerical value distribution of different parts is different; the leakage problem of the sealing part is caused frequently and is an important factor in oil leakage, air leakage and water leakage faults of the engine;
3. the metal gasket is easy to be misplaced when the metal gasket is installed due to the overlarge diameter of the bolt hole of the metal gasket; if the diameter of the bolt hole is too small, the bolt is difficult to penetrate, and the bolt is difficult to install.
Therefore, a flange sealing structure, an engine and a vehicle with good sealing performance and a gasket convenient to mount and position are needed to solve the technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flange sealing structure, an engine and a vehicle.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a flange seal structure for sealing a connection of a first pipeline and a second pipeline, the flange seal structure comprising:
a first flange connected to an end of the first pipeline;
a second flange connected to an end of the second pipeline;
the butt joint surface of the first flange is abutted against the butt joint surface of the second flange, and the butt joint surface of the first flange and/or the butt joint surface of the second flange is/are provided with an installation positioning groove; the elastic gasket assembly is arranged in the installation positioning groove, and the inner ring side wall and the outer ring side wall of the elastic gasket assembly are respectively abutted against the inner ring side wall and the outer ring side wall of the installation positioning groove; when the abutting surface of the first flange abuts the abutting surface of the second flange, the first flange and the second flange compress the resilient gasket assembly and deform the resilient gasket assembly.
As a preferable technical scheme of the flange sealing structure, the longitudinal section of the elastic gasket assembly is in a wave-shaped structure.
As a preferred technical scheme of a flange seal structure, the wave structure includes a plurality of semicircle portions and two vertical portions, and is a plurality of the semicircle portion connects gradually, and is adjacent semicircle portion central symmetry sets up, two vertical portion connect in a plurality of the both sides of semicircle portion, two vertical portion respectively the butt in the inner circle lateral wall of installation constant head tank with the outer lane lateral wall.
As a preferable technical scheme of the flange sealing structure, the elastic gasket assembly is formed by superposing a plurality of gasket units.
As a preferred technical scheme of the flange sealing structure, the elastic gasket assembly is a single-layer gasket.
As an optimal technical scheme of the flange sealing structure, the elastic gasket assembly comprises a hollow gasket and an elastic part, the hollow gasket comprises a hollow cavity, the elastic part is arranged in the hollow cavity, two ends of the elastic part respectively abut against the two axial side wall surfaces of the first flange along the hollow cavity, and the elastic part can be compressed along the axial direction of the first flange.
As a preferred technical scheme of the flange seal structure, the elastic piece is a spring.
As a preferred technical scheme of the flange seal structure, the elastic gasket assembly is made of metal.
To achieve the above object, the present invention further provides an engine including the flange seal structure as described above.
To achieve the above object, the present invention also provides a vehicle including the engine as described above.
The utility model provides a flange sealing structure, an engine and a vehicle, wherein the vehicle comprises the engine, the engine comprises the flange sealing structure which is used for connecting and sealing a first pipeline and a second pipeline, the flange sealing structure comprises a first flange, a second flange and an elastic gasket component, a mounting positioning groove is formed in a butt joint face of the first flange and/or a butt joint face of the second flange, the elastic gasket component is arranged in the mounting positioning groove, and an inner ring side wall and an outer ring side wall of the elastic gasket component are respectively abutted against an inner ring side wall and an outer ring side wall of the mounting positioning groove so as to play a role in mounting and positioning the elastic gasket component; when the butt joint surface of the first flange is abutted with the butt joint surface of the second flange, the first flange and the second flange compress the elastic gasket assembly and deform the elastic gasket assembly, and the compression amount of the elastic gasket assembly is the height difference between the height of the elastic gasket assembly and the axial height of the mounting positioning groove along the first flange, so that the compression amount of the elastic gasket assembly is more accurate and controllable, the requirement of the set compression amount can be met, and the sealing property is better; after the first flange and the second flange are connected, the position matching between the first flange and the second flange is determined by the abutting surface of the rigid first flange and the abutting surface of the second flange, so that the reduction of the bolt pretightening force caused by the deformation of the elastic gasket component is avoided, the reduction of the sealing pressure cannot be caused, and the sealing performance is better. The elastic gasket assembly can be limited to extend along the radial direction of the first flange by adopting the mounting positioning groove, so that the pressure on the elastic gasket assembly along the axial direction of the first flange is ensured, and the sealing performance is ensured.
Drawings
FIG. 1 is a partial structural cross-sectional view of a prior art flange seal configuration;
FIG. 2 is an exploded view of a flange seal configuration provided by an embodiment of the present invention;
fig. 3 is a partial structural sectional view of a flange seal structure provided in accordance with an embodiment of the present invention.
Reference numerals:
1', a convex structure;
1. a first flange; 2. a second flange; 3. a resilient gasket assembly; 4. and (4) bolts.
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", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, 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 present embodiment provides a vehicle including an engine.
The present embodiments also provide an engine that includes a flange seal arrangement.
As shown in fig. 2 and 3, the flange sealing structure is used for sealing the connection of a first pipeline and a second pipeline, and comprises a first flange 1, a second flange 2 and an elastic gasket assembly 3, wherein the first flange 1 is connected to the end of the first pipeline; the second flange 2 is connected to the end of the second pipeline; the butt joint surface of the first flange 1 is abutted against the butt joint surface of the second flange 2, and the butt joint surface of the first flange 1 and/or the butt joint surface of the second flange 2 is/are provided with installation positioning grooves; the elastic gasket assembly 3 is arranged in the installation positioning groove, and the inner ring side wall and the outer ring side wall of the elastic gasket assembly 3 are respectively abutted against the inner ring side wall and the outer ring side wall of the installation positioning groove; when the abutting surface of the first flange 1 and the abutting surface of the second flange 2 abut, the first flange 1 and the second flange 2 compress the resilient gasket assembly 3 and deform the resilient gasket assembly 3.
The installation positioning groove is formed in the butt joint face of the first flange 1 and/or the butt joint face of the second flange 2, the elastic gasket assembly 3 is arranged in the installation positioning groove, the inner ring side wall and the outer ring side wall of the elastic gasket assembly 3 are abutted to the inner ring side wall and the outer ring side wall of the installation positioning groove respectively, so that the installation positioning effect on the elastic gasket assembly 3 is achieved, a bolt hole does not need to be formed in the elastic gasket assembly 3 to position the elastic gasket assembly 3, dislocation does not occur, and the installation positioning is convenient; when the butt joint surface of the first flange 1 is abutted to the butt joint surface of the second flange 2, the first flange 1 and the second flange 2 compress the elastic gasket component 3 and deform the elastic gasket component 3, and the compression amount of the elastic gasket component 3 is the height difference between the height of the elastic gasket component 3 and the axial direction of the installation positioning groove along the first flange 1, so that the compression amount of the elastic gasket component 3 is more accurate and controllable, the requirement of the set compression amount can be met, and the sealing performance is better; after the first flange 1 and the second flange 2 are connected, the position matching between the first flange 1 and the second flange 2 is determined by the abutting surface of the rigid first flange 1 and the abutting surface of the second flange 2, so that the reduction of the pretightening force of the bolt 4 caused by the deformation of the elastic gasket component 3 is avoided, the reduction of the sealing pressure cannot be caused, and the sealing performance is better. The present embodiment, in the form of the mounting positioning groove, can limit the extension of the resilient gasket assembly 3 along the radial direction of the first flange 1, thereby ensuring the pressure on the resilient gasket assembly 3 along the axial direction of the first flange 1 to ensure the sealing performance.
It will be appreciated that the height of the resilient gasket assembly 3 (i.e. the dimension of the resilient gasket assembly 3 in the axial direction of the first flange 1) must be greater than the total height of the mounting detents on the first and second flanges 1, 2 (i.e. the dimension of the mounting detents on the first and second flanges 1, 2 in the axial direction of the first flange 1) so that, when the resilient gasket assembly 3 is compressed, the resilient gasket assembly 3 forms an interference fit with the first and second flanges 1, 2 to ensure sealing performance. Preferably, in this embodiment, along the radial direction of the first flange 1, the size of the resilient gasket assembly 3 is the same as the size of the installation positioning groove, which can further facilitate the placement of the resilient gasket assembly 3 in the installation positioning groove.
When one of first flange 1 and second flange 2 sets up the installation constant head tank, elastic gasket subassembly 3 along the axial both sides surface of first flange 1 butt respectively in the bottom surface of installation constant head tank and the butt joint face of the flange that does not set up the installation constant head tank. When all setting up the installation constant head tank on first flange 1 and the second flange 2, elastic gasket subassembly 3 butts respectively in the bottom surface of two installation constant head tanks along the axial both sides surface of first flange 1.
The connection of the first flange 1 and the first pipeline and the connection of the second flange 2 and the second pipeline can be selectively welded. Certainly, in other embodiments, an interference fit connection mode in which the first flange 1 and the first pipeline are sleeved with each other may be selected, and in order to ensure the sealing property of the connection between the first flange 1 and the first pipeline, a sealing ring may be disposed at the connection between the first flange 1 and the first pipeline; in a similar way, the second flange 2 and the second pipeline are also connected in an interference fit manner, and a sealing ring can be arranged at the joint of the second flange 2 and the second pipeline for ensuring the sealing property of the connection between the second flange 2 and the second pipeline.
As shown in fig. 3, the first flange 1 is provided with bolt holes, the second flange 2 is provided with bolt holes corresponding to the positions of the first flange 1, and the bolts 4 are inserted into the bolt holes of the first flange 1 and the second flange 2 and are fastened and fixed by nuts. It will be appreciated that to ensure the sealing performance of the resilient gasket assembly 3, in this embodiment the mounting locating slots are open in the inner ring of bolt holes in the abutment face of the first flange 1 and/or the abutment face of the second flange 2. Under the condition of ensuring the structural strength of the first flange 1 and the second flange 2, a person skilled in the art can adjust the specific opening position of the installation positioning groove and the width of the installation positioning groove according to actual needs so as to ensure the best sealing performance.
Even if the conventional flange sealing structure is screwed again on an assembly line to reach a specified pretightening force value, the elasticity of the metal gasket is reduced along with the aging of the metal gasket and other reasons in actual use, the contact sealing pressure is also reduced, and the sealing effect becomes unreliable. Preferably, as shown in fig. 3, in the present embodiment, the longitudinal section of the elastic pad assembly 3 is in a wave-shaped configuration, which provides good elasticity without parallel flat portions, so that the sealing pressure is not lowered or is lowered relatively slowly due to aging or elasticity reduction after a period of use, to secure durability of the sealing performance. Specifically, the wave structure includes a plurality of semicircle portions and two vertical portions, and a plurality of semicircle portions connect gradually, and adjacent semicircle center symmetry sets up, and two vertical portions are connected in the both sides of a plurality of semicircle portions, and two vertical portions butt respectively in the inner circle lateral wall and the outer lane lateral wall of installation constant head tank, and vertical portion provides sufficient support for semicircle portion. When the bolt 4 and the nut are screwed down to enable the butt joint surface of the first flange 1 to be abutted against the butt joint surface of the second flange 2, the first flange 1 and the second flange 2 can compress the arc top of the semi-arc part of the elastic gasket component 3, so that a plurality of sealing belts are formed, and the sealing performance is improved.
Optionally, the elastic gasket assembly 3 is formed by stacking a plurality of gasket units, that is, each gasket unit is of a wave-shaped structure, and the plurality of gasket units are stacked in the axial direction of the first flange 1 to form the elastic gasket assembly 3; alternatively, the resilient pad assembly 3 is a single layer pad. Because the process of the stacked multilayer gasket units is complex, the elastic gasket assembly 3 is selected as a single-layer gasket in the embodiment.
In this embodiment, the elastic pad assembly 3 is made of metal.
The shape of the cross section of the installation positioning groove can be selected from a rectangle, a circular arc or a trapezoid, and a person skilled in the art can adjust the shape of the cross section of the installation positioning groove according to the shape of the elastic gasket assembly 3 to ensure better sealing performance. The shape of the elastic gasket assembly 3 according to this embodiment is formed by a plurality of semicircular arcs and two vertical portions, and in order to ensure that the vertical portions can be perfectly attached to the inner ring side wall and the outer ring side wall of the installation positioning groove, preferably, in this embodiment, the cross section of the installation positioning groove is rectangular.
Example two
The present embodiment further provides a flange sealing structure, which is different from the flange sealing structure in the first embodiment in that the elastic gasket assembly 3 is disposed, specifically, the elastic gasket assembly 3 includes a hollow gasket and an elastic member, the hollow gasket includes a hollow cavity, the elastic member is disposed in the hollow cavity, two ends of the elastic member respectively abut against two side wall surfaces of the hollow cavity along the axial direction of the first flange 1, and the elastic member can be compressed along the axial direction of the first flange 1.
Preferably, the elastic member is a spring.
Specifically, the gasket assembly 3 of the present embodiment may be configured in a structure similar to a conventional flange seal structure, and a plurality of elastic members may be disposed between two protruding structures, thereby improving the elasticity of the overall structure.
The elastic gasket member 3 also has good elasticity, so that the sealing pressure is not reduced or is reduced slowly due to aging or elasticity reduction after a period of use, thereby ensuring the durability of 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. A flange seal structure for sealing a connection of a first pipe and a second pipe, the flange seal structure comprising:
a first flange (1) connected to an end of the first pipeline;
a second flange (2) connected to an end of the second pipeline; the butt joint surface of the first flange (1) is abutted against the butt joint surface of the second flange (2), and the butt joint surface of the first flange (1) and/or the butt joint surface of the second flange (2) is/are provided with an installation positioning groove;
the elastic gasket assembly (3) is arranged in the installation positioning groove, and the inner ring side wall and the outer ring side wall of the elastic gasket assembly (3) are respectively abutted against the inner ring side wall and the outer ring side wall of the installation positioning groove; when the butt joint surface of the first flange (1) is abutted against the butt joint surface of the second flange (2), the first flange (1) and the second flange (2) compress the elastic gasket component (3) and deform the elastic gasket component (3).
2. The flange seal structure according to claim 1, characterized in that the longitudinal section of said elastic gasket member (3) is of a wave-like configuration.
3. The flange sealing structure according to claim 2, wherein the wave-shaped structure includes a plurality of semi-circular arc portions and two vertical portions, the plurality of semi-circular arc portions are connected in sequence, adjacent semi-circular arc portions are arranged in a central symmetry manner, the two vertical portions are connected to two sides of the plurality of semi-circular arc portions, and the two vertical portions are respectively abutted to the inner ring side wall and the outer ring side wall of the installation positioning groove.
4. The flange seal structure according to claim 2, characterized in that said elastic gasket member (3) is constituted by a plurality of gasket units arranged in a stacked manner.
5. The flange seal structure according to claim 2, characterized in that said resilient gasket assembly (3) is a single-layer gasket.
6. The flange seal structure according to claim 1, wherein the elastic gasket assembly (3) includes a hollow gasket and an elastic member, the hollow gasket includes a hollow chamber, the elastic member is disposed in the hollow chamber, and two ends of the elastic member respectively abut against two side walls of the hollow chamber along the axial direction of the first flange (1), and the elastic member can be compressed along the axial direction of the first flange (1).
7. The flange seal structure of claim 6, wherein said resilient member is a spring.
8. The flange seal structure according to claim 1, characterized in that the material of said resilient gasket member (3) is a metal material.
9. An engine comprising a flange seal structure according to any one of claims 1 to 8.
10. A vehicle characterized by comprising the engine of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121548339.7U CN215635588U (en) | 2021-07-08 | 2021-07-08 | Flange seal structure, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121548339.7U CN215635588U (en) | 2021-07-08 | 2021-07-08 | Flange seal structure, engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215635588U true CN215635588U (en) | 2022-01-25 |
Family
ID=79948659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121548339.7U Active CN215635588U (en) | 2021-07-08 | 2021-07-08 | Flange seal structure, engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215635588U (en) |
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2021
- 2021-07-08 CN CN202121548339.7U patent/CN215635588U/en active Active
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