CN202493826U - Self-sealing structure of pipeline joint - Google Patents
Self-sealing structure of pipeline joint Download PDFInfo
- Publication number
- CN202493826U CN202493826U CN2012200725360U CN201220072536U CN202493826U CN 202493826 U CN202493826 U CN 202493826U CN 2012200725360 U CN2012200725360 U CN 2012200725360U CN 201220072536 U CN201220072536 U CN 201220072536U CN 202493826 U CN202493826 U CN 202493826U
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- CN
- China
- Prior art keywords
- seal
- sealing structure
- seal ring
- pipe coupling
- pressing plate
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- Expired - Lifetime
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Abstract
The utility model relates to a self-sealing structure of a pipeline joint. The pipeline joint comprises an outer sleeve and an inner sleeve. The self-sealing structure comprises a seal ring case, a pressing plate, a fastening assembly and a seal rubber ring, wherein the seal ring case and the outer sleeve are welded, the pressing plate is connected with the seal ring case via the fastening assembly, a groove is arranged between the pressing plate and the seal ring case, and the seal rubber ring is arranged in the groove. Compared with the prior art, the self-sealing structure has the advantages of firm sealing, great deflecting angle and the like.
Description
Technical field
The utility model relates to a kind of structure, especially relates to a kind of self sealing structure of pipe coupling.
Background technique
Along with modernized industry and development of urbanization, length is increasing apart from the application of the water-supply pipeline of multi-operating mode water supply and sewage work.But owing to surface subsidence, big, the with a varied topography and seasonal variations of vibrations with day and night the pipeline deflection that produces greatly of the temperature difference and problem such as stretch all can produce serious influence to pipeline.The suitable position that is employed at present pipeline mostly is provided with pipe coupling, is used to absorb the radial shift that the axial displacement that causes and compensation cause because of setting of ground that expands with heat and contract with cold.But the O-ring seal of the pipe coupling of using in the market all adopts forced sealing, and have following many defectives: magnitude of interference is non-adjustable, and interference too Xiao Yi is leaked; Magnitude of interference too Da Yi causes drawing bad O-ring seal; The pipeline radial shift causes O-ring seal unbalance stress all around, is prone to leak, and the flexible angle is generally all less; When long-time operating mode is used, O-ring seal meeting ageing hardening, seal pressure reduces and leaks.
The model utility content
The purpose of the utility model is exactly for the defective that overcomes above-mentioned existing technology existence a kind of self sealing structure firm and pipe coupling that the flexible angle is big that seals to be provided.
The purpose of the utility model can realize through following technological scheme:
A kind of self sealing structure of pipe coupling, described pipe coupling comprises outer sleeve and inner sleeve, it is characterized in that, described self sealing structure comprises seal ring letter, pressing plate, fastener assembly and O-ring seal;
Described seal ring letter and outer sleeve welding, described pressing plate is connected with the seal ring letter through fastener assembly, is provided with groove between described pressing plate and the seal ring letter, and described O-ring seal is arranged in the groove.
Described outer sleeve and inner sleeve all are cylindrical body.
The sidewall of described groove is a dentation.
Be provided with the space between described O-ring seal upper-end surface and the seal ring letter, described O-ring seal lower end surface contacts with the outer wall of inner sleeve.
Described seal ring letter is provided with the aperture that several communicate with the space.
Be provided with O shape circle between described pressing plate and the seal ring letter.
Described fastener assembly comprises screw bolt and nut.
Compared with prior art, be provided with special dentation groove between the pressing plate of the pipe coupling that the utility model provides and the seal ring letter, O-ring seal and its dentation connecting mode have guaranteed that seal ring can not come off, and pressing plate provides the initial specific pressure of O-ring seal simultaneously.The seal ring letter is provided with several apertures; Boot media pressure gets into the space, bottom of dentation groove; Utilize the top and bottom product moment of O-ring seal; Rely on self pressure of fluid to realize selfsealings, it is non-adjustable and sealing that cause is not firm and the problem that reduces because of the aging seal pressure that causes of O-ring seal to have solved sealed increscence amount; Simultaneously, the design of the special shape of O-ring seal head, big with inner sleeve outer wall area of contact, bigger flexible angle is provided, solved the little problem of conventional pipelines joint radial shift flexible angle; And it is easy to manufacture, simple in structure, with low cost.
Description of drawings
Fig. 1 is the pipe coupling product structure schematic representation of the utility model;
Fig. 2 is the enlarged view at I position among Fig. 1;
Fig. 3 is the schematic representation of pipe coupling self sealing structure when scratching work partially of the utility model;
Among Fig. 1, I position-pipe coupling self sealing structure.
Among Fig. 2,1-O-ring seal, 2-pressing plate, 3-space, 4-O-ring seal upper-end surface, 5-O shape circle, 6-bolt, 7-nut, 8-seal ring letter, 9-outer sleeve, 10-aperture, 11-pressure medium, 12-inner sleeve, 13-O-ring seal lower end surface.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
As shown in Figure 1, the I position among the figure is the self sealing structure of pipe coupling.Like Fig. 2-shown in Figure 3, described pipe coupling comprises cylindrical body outer sleeve 9 and cylindrical body inner sleeve 12, has pressure medium 11 between the described internal and external casing, and described self sealing structure comprises seal ring letter 8, pressing plate 2, fastener assembly and O-ring seal 1; Described seal ring letter 8 and outer sleeve 9 welding, described pressing plate 2 is connected by fastener assembly with seal ring letter 8 obverse tops, to give O-ring seal 1 initial specific pressure is provided, and described fastener assembly comprises bolt 6, nut 7; Described pressing plate and the obverse middle part of seal ring letter are provided with O shape circle 5; Described pressing plate 2 is provided with the groove that sidewall is a dentation with seal ring letter 8 obverse bottoms, and described O-ring seal 1 is arranged in this groove.
Be provided with space 3 between described O-ring seal upper-end surface 4 and the seal ring letter 8, described O-ring seal lower end surface 13 contacts with the outer wall of inner sleeve 12, and area of contact is bigger, and bigger flexible angle is provided.
Described seal ring letter 8 is provided with several apertures 10 that communicates with space 3, and aperture 10 boot media pressure 11 get into seal ring letter 8 and are embedded into space 3.The area that O-ring seal upper-end surface 4 is contacted with pressure medium 11 utilizes this difference in areas greater than the area that O-ring seal lower end surface 13 is contacted with pressure medium 11, relies on self pressure of fluid to realize selfsealings.
Claims (6)
1. the self sealing structure of a pipe coupling, described pipe coupling comprises outer sleeve and inner sleeve, it is characterized in that, described self sealing structure comprises seal ring letter, pressing plate, fastener assembly and O-ring seal;
Described seal ring letter and outer sleeve welding, described pressing plate is connected with the seal ring letter through fastener assembly, is provided with groove between described pressing plate and the seal ring letter, and described O-ring seal is arranged in the groove.
2. the self sealing structure of a kind of pipe coupling according to claim 1 is characterized in that, described outer sleeve and inner sleeve all are cylindrical body.
3. the self sealing structure of a kind of pipe coupling according to claim 1 is characterized in that, the sidewall of described groove is a dentation.
4. the self sealing structure of a kind of pipe coupling according to claim 1 is characterized in that, is provided with the space between described O-ring seal upper-end surface and the seal ring letter, and described O-ring seal lower end surface contacts with the outer wall of inner sleeve; Described seal ring letter is provided with the aperture that several communicate with the space.
5. the self sealing structure of a kind of pipe coupling according to claim 1 is characterized in that, is provided with O shape circle between described pressing plate and the seal ring letter.
6. the self sealing structure of a kind of pipe coupling according to claim 1 is characterized in that, described fastener assembly comprises screw bolt and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200725360U CN202493826U (en) | 2012-02-29 | 2012-02-29 | Self-sealing structure of pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200725360U CN202493826U (en) | 2012-02-29 | 2012-02-29 | Self-sealing structure of pipeline joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493826U true CN202493826U (en) | 2012-10-17 |
Family
ID=47000055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200725360U Expired - Lifetime CN202493826U (en) | 2012-02-29 | 2012-02-29 | Self-sealing structure of pipeline joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117662885A (en) * | 2023-12-29 | 2024-03-08 | 深圳市佳泰机电工程有限公司 | Pipe joint convenient to dismantle fast and installation |
-
2012
- 2012-02-29 CN CN2012200725360U patent/CN202493826U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117662885A (en) * | 2023-12-29 | 2024-03-08 | 深圳市佳泰机电工程有限公司 | Pipe joint convenient to dismantle fast and installation |
| CN117662885B (en) * | 2023-12-29 | 2025-01-21 | 深圳市佳泰机电工程有限公司 | A pipe connector convenient for quick disassembly and installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jiading District Huangdu town Lianxing Lianxing village road 201804 Shanghai City No. 88 Patentee after: SHANGHAI GUANLONG VALVE AUTOMATION Co.,Ltd. Address before: Jiading District Huangdu town Lianxing Lianxing village road 201804 Shanghai City No. 88 Patentee before: SHANGHAI CHIRONG AUTOMATION Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |