CN201731217U - Hardness/softness composite sealing ring - Google Patents
Hardness/softness composite sealing ring Download PDFInfo
- Publication number
- CN201731217U CN201731217U CN2010205098982U CN201020509898U CN201731217U CN 201731217 U CN201731217 U CN 201731217U CN 2010205098982 U CN2010205098982 U CN 2010205098982U CN 201020509898 U CN201020509898 U CN 201020509898U CN 201731217 U CN201731217 U CN 201731217U
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- ring
- hard
- flexible end
- rigidity main
- soft compound
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Abstract
The utility model discloses a hardness/softness composite sealing ring, which is characterized in that: the ring is formed by a hardness main ring (1) and softness end rings (2); both end surfaces of the hardness main ring (1) are respectively fixedly provided with the softness end ring (2); a mutually-occlusive concave-convex structure (3) is arranged between the combination surface of the hardness main ring (1) and the softness end ring (2); the thickness of the hardness main ring (1) is 3-5 times that of the softness end ring (2). The hardness/softness composite sealing ring has advantages of high strength, good sealing performance and flexible rotating.
Description
Technical field
The utility model relates to a kind of high pressure sealing ring, the high pressure resistant seal ring that uses in the compensator of installing on especially a kind of chemical pipeline, the hard and soft compound seal ring that uses in the whirl compensator of installing on specifically a kind of chemical pipeline.
Background technique
At present, on the pipeline that petrochemical industry and power industry are used in order to adapt to the needs that expand with heat and contract with cold, be extensive use of all kinds of whirl compensators, high pressure resistant seal ring 6 is installed in whirl compensator, as shown in Figure 1, two end faces of this high pressure resistant seal ring 6 need bear very high pressure when being subjected to squeeze distortion and requirement can keep sealing in relative movement, common seal ring is owing to the relative movement that can't bear under the high pressure is easy under high pressure disintegrate embrittlement, do not have seal action, the highest compression resistance of all kinds of seal rings on the existing handbook generally is no more than 50MPa, when surpassing this pressure, must carry out the Specialty Design of sealing configuration, make manufacture cost greatly increase.
In order to make traditional seal ring can adapt to the needs of high pressure, people have expected that the method that increases the V-arrangement skeleton in seal ring improves its compression resistance, the multilayer skeleton laminates mutually and forms high-intensity seal ring, but because ducted pressure is very big, under high pressure conditions, can produce axial distortion, cause seal ring to arch upward, owing to be subjected to the restriction of mounting groove, strengthened the frictional force between seal ring and the pipeline, make and to rotate between whirl compensator and the pipeline, when serious even can produce destruction to pipeline, therefore making seal ring keep higher rigidity when guaranteeing end face seal is the key that solves the high voltage terminal face seal.
Summary of the invention
The purpose of this utility model is to exist intensity not high at the end face sealing ring in the existing high pressure pipe line whirl compensator, easily produces the problem of holding tube, designs a kind of hard and soft compound seal ring, to solve the needs of high pressure sealing.
The technical solution of the utility model is:
A kind of hard and soft compound seal ring, it is characterized in that it is mainly combined by rigidity main ring 1 and flexible end ring 2, the both ends of the surface of rigidity main ring 1 respectively are installed with a flexible end ring 2 by extruding or bonding, be provided with the concaveconvex structure 3 of mutual interlock between the junction plane of rigidity main ring 1 and flexible end ring 2, the thickness of described rigidity main ring 1 is 3-5 times of flexible end ring 2 thickness.
Described concaveconvex structure 3 is made up of the groove of rigidity main ring 1 end face and the boss of flexible end ring 2 end faces.
Groove in the described concaveconvex structure 3 is concave arc shape or zigzag structure, and the boss in the corresponding concaveconvex structure 3 is convex or zigzag structure; The degree of depth of described groove is the 2-5 millimeter.
Described rigidity main ring 1 is a kind of in stainless steel ring, extraordinary steel loop, alloy steel loop or the hard ceramic ring, and described flexible end ring 2 is a kind of in rubber ring, titanium fibrage ring or the Expanded graphite.
The compressive strength of described Expanded graphite is not less than 300MPa, and the order number is 30 orders.
Be lined with steel wire 4 in the described flexible end ring 2.
The endoporus two ends of described rigidity main ring 1 are equipped with arc transition section 5.
The beneficial effects of the utility model:
The utility model has fundamentally solved the difficult problem of sealing and resistance to deformation, because the rigidity main ring is high voltage bearing rigid material, in use can not produce distortion, and the end ring that mainly seals is because volume is less, even distortion can not produce relatively rotating between too big frictional force restriction whirl compensator and the pipeline yet, simultaneously because the endoporus of rigidity main ring is provided with circular arc chamfering, can receive the material of the flexible end ring after part is out of shape, can further reduce the frictional force between flexible end ring and the pipe surface, can keep for a long time rotating flexibly.
The utility model is simple in structure, and is easily manufactured, and the end face processing request of rigidity main ring is low, than the seal ring of laminated structure, its manufacture cost can reduce more than 50%, and its voltage endurance capability can reach more than 300 MPas, applied range can be widely used in the sealing of all kinds of high pressure active face.
Description of drawings
Fig. 1 is the structural representation of existing whirl compensator.
Fig. 2 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
A kind of hard and soft compound seal ring, it is mainly combined by rigidity main ring 1 and flexible end ring 2, rigidity main ring 1 can be stainless steel ring, extraordinary steel loop, a kind of in alloy steel loop or the hard ceramic ring, flexible end ring 2 can be rubber ring, a kind of in titanium fibrage ring or the Expanded graphite, in order to improve the intensity of flexible end ring, be preferably in during concrete enforcement and wherein increase stainless steel steel wire 4, the number of plies of steel wire 4 depends on the thickness of flexible end ring 2, be generally about five layers, if when adopting Expanded graphite as flexible end ring, its compressive strength should be not less than 300MPa, and the order number can be about 30 orders.The both ends of the surface of rigidity main ring 1 can link to each other with flexible end ring 2 by the method for extruding or bonding, in order to improve join strength, preferred design becomes the concaveconvex structure 3 of mutual interlock between the junction plane of rigidity main ring 1 and flexible end ring 2, concaveconvex structure 3 preferably is made up of the groove of rigidity main ring 1 end face and the boss of flexible end ring 2 end faces, groove in the concaveconvex structure 3 can be concave arc shape or zigzag structure, and the boss in the corresponding concaveconvex structure 3 is convex or zigzag structure; The degree of depth of described groove can be the 2-5 millimeter.In order to guarantee resistance to pressure, the 3-5 that the thickness of rigidity main ring 1 should be flexible end ring 2 thickness doubly, as the both ends of the surface of the stainless steel main ring of 20 millimeters thick a thickness can be installed respectively is 5 millimeters Expanded graphite end ring.For the ease of taking in the deformable material of the flexible end ring after the distortion, the endoporus two ends of rigidity main ring 1 should be designed to have the structure of arc transition section 5 when specifically implementing, and the radius of arc transition section 5 is generally the 2-5 millimeter.As shown in Figure 2.
Fig. 1 is a concrete application examples of the present utility model.The seal ring of the whirl compensator on the buried conveyance conduit of the petrochemical industry among Fig. 1 requires end face seal, high pressure resistant, adopting thickness of the present utility model is behind 25 millimeters the seal ring, in when manifold pressure increases to 300MPa, making after testing pipe and outer tube relatively rotate 1000 times (can) after still do not have leakage, can guarantee normally use of conveyance conduit 100 years.
Seal ring of the present utility model both can be used for the pipeline whirl compensator of petrochemical industry, also can be used for other similar relative movement type circumference sealing occasion that high pressure requirement is arranged.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (7)
1. hard and soft compound seal ring, it is characterized in that it is mainly combined by rigidity main ring (1) and flexible end ring (2), the both ends of the surface of rigidity main ring (1) respectively are installed with a flexible end ring (2), be provided with the concaveconvex structure (3) of mutual interlock between the junction plane of rigidity main ring (1) and flexible end ring (2), the thickness of described rigidity main ring (1) is 3-5 times of flexible end ring (2) thickness.
2. hard and soft compound seal ring according to claim 1 is characterized in that described concaveconvex structure (3) is made up of the groove of rigidity main ring (1) end face and the boss of flexible end ring (2) end face.
3. hard and soft compound seal ring according to claim 1 and 2 is characterized in that the groove in the described concaveconvex structure (3) is concave arc shape or zigzag structure, and the boss in the corresponding concaveconvex structure (3) is convex or zigzag structure; The degree of depth of described groove is the 2-5 millimeter.
4. hard and soft compound seal ring according to claim 1, it is characterized in that a kind of in stainless steel ring, extraordinary steel loop, alloy steel loop or the hard ceramic ring of described rigidity main ring (1), described flexible end ring (2) is a kind of in rubber ring, titanium fibrage ring or the Expanded graphite.
5. hard and soft compound seal ring according to claim 4 is characterized in that the compressive strength of described Expanded graphite is not less than 300MPa.
6. according to claim 1 or 4 described hard and soft compound seal rings, it is characterized in that being lined with in the described flexible end ring (2) steel wire (4).
7. hard and soft compound seal ring according to claim 1 is characterized in that the endoporus two ends of described rigidity main ring (1) are equipped with arc transition section (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205098982U CN201731217U (en) | 2010-08-30 | 2010-08-30 | Hardness/softness composite sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205098982U CN201731217U (en) | 2010-08-30 | 2010-08-30 | Hardness/softness composite sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201731217U true CN201731217U (en) | 2011-02-02 |
Family
ID=43522375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205098982U Expired - Lifetime CN201731217U (en) | 2010-08-30 | 2010-08-30 | Hardness/softness composite sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201731217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013224A (en) * | 2017-05-07 | 2017-08-04 | 中铁十八局集团有限公司 | The flexible steel bushing rubber ring of sealing |
-
2010
- 2010-08-30 CN CN2010205098982U patent/CN201731217U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013224A (en) * | 2017-05-07 | 2017-08-04 | 中铁十八局集团有限公司 | The flexible steel bushing rubber ring of sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Hongxin Revolving Compensator Technology Co.,Ltd. Assignor: Song Zhanggen Contract record no.: 2011320000296 Denomination of utility model: Rigid-flexible composite sealing ring Granted publication date: 20110202 License type: Exclusive License Record date: 20110317 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |
|
| CX01 | Expiry of patent term |