CN109237167B - Flange sealing structure - Google Patents
Flange sealing structure Download PDFInfo
- Publication number
- CN109237167B CN109237167B CN201811311239.5A CN201811311239A CN109237167B CN 109237167 B CN109237167 B CN 109237167B CN 201811311239 A CN201811311239 A CN 201811311239A CN 109237167 B CN109237167 B CN 109237167B
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- Prior art keywords
- flange
- sealing
- sealing gasket
- groove
- gasket
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention belongs to the technology of connection sealing, and particularly relates to a flange sealing structure. The flange sealing structure comprises a first flange (2), a sealing gasket (3) and a second flange (4). Wherein, first flange (2) and second flange (4) one end set up respectively on two pipelines, and the sealed pad of other end centre gripping is sealed and is sealed through bolted connection, wherein, sealed pad (3) inlay establishes in the recess of first flange (2). According to the flange sealing structure, the sealing gasket is embedded in the groove, so that good air tightness of the butt joint part of the flanges of the high-temperature pipelines of the airplane can be guaranteed, the sealing gasket is prevented from being blown by heated air and deformed, and the local part of the sealing gasket is blown out of the installation position to cause pipeline gas leakage, and the sealing gasket adopts an approximately quincunx section, so that the stress condition is better under the condition of bolt connection. In addition, for the condition that the airplane is connected by adopting the traditional flat flange structure, the flange sealing structure is easier to be changed and executed, and the changing difficulty and the cost are reduced.
Description
Technical Field
The invention belongs to the technology of connection sealing, and particularly relates to a flange sealing structure.
Background
The flange connection is a common mechanical connection mode for pipelines, and in practical application, the flange connection needs to be sealed, for example, the butt joint of pipelines in an aircraft environmental control system and the installation position of a check valve and the pipelines need to be connected in a flange sealing structure mode. Conventional flange structure is flat flange generally, when being used for the high temperature pipeline, because sealed pad is high temperature resistant rubber class material, nevertheless sealed pad part still probably is blown out flange relevant position in system's working process, leads to the pipeline gas leakage, to near structure, equipment etc. cause the heat radiation influence, influences the normal work of system, has certain potential safety hazard.
Disclosure of Invention
The purpose of the invention is: the flange sealing structure is simple in structure, safe, reliable and good in high-temperature sealing performance.
The technical scheme of the invention is as follows: the utility model provides a flange seal structure, its includes first flange 2, sealed 3 and second flange 4 of filling up, wherein, first flange 2 and 4 one ends of second flange set up respectively on two pipelines, and the sealed pad of other end centre gripping is sealed and is sealed through bolted connection, wherein, sealed pad inlays to be established in the recess of first flange 2.
The outer edge of the sealing gasket 3 is of a plum-blossom-shaped structure.
Two symmetrical openings are arranged on the groove of the first flange 2, and the corresponding part of the sealing gasket 3 is embedded on the openings.
The second flange is a flat plate flange.
And a groove which is the same as the groove of the first flange and used for installing the sealing gasket is arranged in the second flange.
The sealing gasket 3 is made of high-temperature resistant rubber material.
The sealing gasket 3 is arranged between the first flange and the second flange, and certain thickness allowance is reserved, so that the first flange is prevented from being in direct contact with the second flange.
The utility model provides a flange seal structure includes first flange 2, flanged check valve, second flange 4 and two sealed pads, wherein, first flange 2 and 4 one end of second flange set up respectively on two pipelines, and the other end all is provided with the recess that is used for sealed pad installation, and two sealed pads set up respectively in two flange recesses to the centre gripping sets up the check valve both sides in flanged.
The flange of the one-way valve is a flat flange or a groove structure capable of installing a sealing gasket is arranged on at least one side of the flange.
The invention has the technical effects that: according to the flange sealing structure, the sealing gasket is embedded in the groove, so that good air tightness of the butt joint part of the flanges of the high-temperature pipelines of the airplane can be guaranteed, the sealing gasket is prevented from being blown by heated air and deformed, and the local part of the sealing gasket is blown out of the installation position to cause pipeline gas leakage, and the sealing gasket adopts an approximately quincunx section, so that the stress condition is better under the condition of bolt connection. In addition, for the condition that the airplane is connected by adopting the traditional flat flange structure, the flange sealing structure is easier to be changed and executed, and the changing difficulty and the cost are reduced.
Drawings
FIG. 1 is an exploded view of a first embodiment of the flange seal configuration of the present invention;
FIG. 2 is a schematic structural view of a grooved flange;
FIG. 3 is a schematic view of the gasket construction;
figure 4 is a schematic view of the construction of a flat flange,
wherein: 1-pipeline; 2-first flange, 3-sealed pad, 4-second flange, 5-bolt, nut, packing ring subassembly, 6-pipeline.
Detailed Description
The following further description is made with reference to the accompanying drawings and examples:
please refer to fig. 1, which is an exploded view of a flange sealing structure according to a first embodiment of the present invention. In the present embodiment, the flange seal structure includes a first flange 2, a gasket 3, and a second flange 4. Wherein, first flange 2 and second flange 4 one end set up respectively on two pipelines, and the other end centre gripping is sealed up and is sealed through bolted connection, wherein, sealed the pad inlays to be established in the recess of first flange 2.
Referring to fig. 2, the inner edge of the groove of the first flange 2 is shaped like a quincunx and is provided with two symmetrical openings, and the corresponding parts of the sealing gasket 3 are embedded in the openings, so that the sealing structure can prevent the sealing gasket from being locally blown out of the installation position by hot airflow in the pipeline to cause gas leakage of the pipeline, and can prevent the flange with the convex groove from being directly contacted with the flat flange on the other side to cause gas leakage of the pipeline.
In addition, the second flange is a flat flange, or a groove which is used for installing the sealing gasket and is the same as the groove of the first flange is also arranged in the second flange, so that the sealing performance is further improved.
The sealing gasket 3 is made of high-temperature-resistant rubber materials, and the outer edge of the sealing gasket is of a plum-blossom-shaped structure so as to be matched with the inner edge of the groove. The gasket 3 has a sufficient thickness to be installed between the first flange and the second flange with a certain thickness margin, so that direct hard contact between the first flange and the second flange can be prevented.
In another embodiment of the present invention, the structure is similar to that of the first embodiment. The flange sealing structure comprises a first flange 2, a one-way valve with a flange, a second flange 4 and two sealing gaskets, wherein one end of the first flange 2 and one end of the second flange 4 are respectively arranged on two pipelines, the other end of the first flange 2 and the other end of the second flange 4 are respectively provided with a groove for installing the sealing gaskets, the two sealing gaskets are respectively arranged in the two flange grooves, and the two sealing gaskets are clamped on two sides of the one-way valve with the flange. Meanwhile, the thickness of the sealing gasket is required to have certain thickness allowance after installation, and direct hard contact between the valve flange and the first flange and between the valve flange and the second flange is avoided. The flange of the one-way valve can be a flat flange or a groove structure capable of installing a sealing gasket is arranged on at least one side of the flange according to actual needs. Therefore, the flange sealing structure can also be suitable for valve sealing, effectively solves the problem of gas leakage caused by the thermal deformation of the sealing gasket, occupies small arrangement space, and has larger practical application value.
Claims (8)
1. A flange sealing structure is characterized by comprising a first flange (2), a sealing gasket (3) and a second flange (4), wherein one end of the first flange (2) and one end of the second flange (4) are respectively arranged on two pipelines, and the other end of the first flange (2) and the other end of the second flange (4) are used for clamping the sealing gasket and are connected and sealed through bolts, wherein the sealing gasket (3) is embedded in a groove of the first flange (2); two symmetrical openings are arranged on the groove of the first flange (2), and the corresponding part of the sealing gasket (3) is embedded on the openings.
2. The flange seal structure according to claim 1, characterized in that the outer edge of said gasket (3) is of a quincunx-like configuration.
3. The flange sealing arrangement according to claim 1, characterized in that the second flange (4) is a flat plate flange.
4. The flange seal structure according to claim 1, characterized in that the second flange (4) is provided with the same groove for gasket mounting as the first flange groove.
5. The flange seal structure according to claim 1, characterized in that the seal (3) is a high temperature resistant rubber material.
6. The flange seal structure according to claim 1, characterized in that the gasket (3) is installed between the first flange (2) and the second flange (4) with a certain thickness margin to avoid direct contact between the first flange (2) and the second flange (4).
7. A flange sealing structure is characterized by comprising a first flange (2), a one-way valve with a flange, a second flange (4) and two sealing gaskets, wherein one end of the first flange (2) and one end of the second flange (4) are respectively arranged on two pipelines, the other end of the first flange and the other end of the second flange are respectively provided with a groove for mounting the sealing gaskets, and the two sealing gaskets are respectively arranged in the two flange grooves and are clamped on two sides of the one-way valve with the flange; two symmetrical openings are arranged on the groove of the first flange (2), and the corresponding part of the sealing gasket (3) is embedded on the openings.
8. The flange sealing structure according to claim 7, characterized in that the flange of the check valve is a flat flange or at least one side is provided with a groove structure capable of mounting a sealing gasket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811311239.5A CN109237167B (en) | 2018-11-05 | 2018-11-05 | Flange sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811311239.5A CN109237167B (en) | 2018-11-05 | 2018-11-05 | Flange sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237167A CN109237167A (en) | 2019-01-18 |
| CN109237167B true CN109237167B (en) | 2021-05-07 |
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ID=65076977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811311239.5A Active CN109237167B (en) | 2018-11-05 | 2018-11-05 | Flange sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237167B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2859052A (en) * | 1954-11-17 | 1958-11-04 | Western Electric Co | Coupling with flange aligning means |
| US20030030229A1 (en) * | 2001-07-26 | 2003-02-13 | Westinghouse Air Brake Company | Gasket for pressurized fluid system |
| CN203375026U (en) * | 2013-06-21 | 2014-01-01 | 张家港华日法兰有限公司 | Novel flange plate component |
| CN104565614A (en) * | 2014-12-22 | 2015-04-29 | 洛阳能源密封件有限公司 | Flange and sealing ring structure with multiplex pressure-resistant structures |
| CN204611153U (en) * | 2015-02-03 | 2015-09-02 | 曲靖众一精细化工股份有限公司 | A kind of flange sealing structure that effectively can reduce leak-down rate |
| CN206496046U (en) * | 2017-03-06 | 2017-09-15 | 西安飞豹科技有限公司 | A kind of check valve of error-preventive design |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05248578A (en) * | 1991-04-18 | 1993-09-24 | Anelva Corp | Vacuum sealing gasket |
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2018
- 2018-11-05 CN CN201811311239.5A patent/CN109237167B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2859052A (en) * | 1954-11-17 | 1958-11-04 | Western Electric Co | Coupling with flange aligning means |
| US20030030229A1 (en) * | 2001-07-26 | 2003-02-13 | Westinghouse Air Brake Company | Gasket for pressurized fluid system |
| CN203375026U (en) * | 2013-06-21 | 2014-01-01 | 张家港华日法兰有限公司 | Novel flange plate component |
| CN104565614A (en) * | 2014-12-22 | 2015-04-29 | 洛阳能源密封件有限公司 | Flange and sealing ring structure with multiplex pressure-resistant structures |
| CN204611153U (en) * | 2015-02-03 | 2015-09-02 | 曲靖众一精细化工股份有限公司 | A kind of flange sealing structure that effectively can reduce leak-down rate |
| CN206496046U (en) * | 2017-03-06 | 2017-09-15 | 西安飞豹科技有限公司 | A kind of check valve of error-preventive design |
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| Publication number | Publication date |
|---|---|
| CN109237167A (en) | 2019-01-18 |
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