CN204785268U - High pressure resistant polytetrafluoroethylene corrugated expansion joint - Google Patents
High pressure resistant polytetrafluoroethylene corrugated expansion joint Download PDFInfo
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- CN204785268U CN204785268U CN201520090039.7U CN201520090039U CN204785268U CN 204785268 U CN204785268 U CN 204785268U CN 201520090039 U CN201520090039 U CN 201520090039U CN 204785268 U CN204785268 U CN 204785268U
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- bellows
- polytetrafluoroethylene
- layer
- high pressure
- pressure resistant
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Abstract
The utility model discloses a high pressure resistant polytetrafluoroethylene corrugated expansion joint, including flange, polytetrafluoroethylene bellows, the flange joint at polytetrafluoroethylene bellows and both ends constitutes bellows compensation structure, the polytetrafluoroethylene bellows includes that the from interior to exterior clinkering becomes integrative interior polytetrafluoroethylene layer, metal mesh layer, outer polytetrafluoroethylene layer, metal mesh layer's both sides cladding glass fiber reinforcement layer, the clinkering gathers the tetrafluoroethene in situ outside, on the cohesion tetrafluoroethene layer, fabric in the glass fiber reinforcement layer is a glass fiber cloth, the further improvement lies in: unit net among the metal mesh layer is the quadrangle structure, two diagonals on the quadrangle respectively with the axial of polytetrafluoroethylene bellows, radially consistent, the crest outside of polytetrafluoroethylene bellows is equipped with the beaded finish. The utility model discloses polytetrafluoroethylene bellows structural strength is high, and is high pressure resistant, reliable, durable.
Description
Technical field
The utility model relates to pipeline compensator, particularly relates to a kind of polytetrafluoroethylbellows bellows compensator.
Background technique
Polytetrafluoroethylbellows bellows compensator is that wherein teflon (PTFE) bellows anticorrosive coat is the core of compensator for compensating the indispensable critical component of displacement that anti-corrosion pipeline internal cause is expanded with heat and contract with cold caused in the industries such as nonferrous smelting, petrochemical industry and flue gas acid preparing.In commercially available polytetrafluoroethylbellows bellows compensator, polytetrafluoroethylbellows bellows generally adopts polytetrafluoroethylmaterial material, has good antiseptic property, but due to teflon quality softer, structural strength is poor, fragile, and working life is short.A kind of bellows of tefloncompensator is disclosed in the patent application " a kind of bellows for tefloncompensator and manufacture method thereof " of China Patent Publication No.: CN101319740A, by interior polytetrafluoroethylbellows bellows, wire netting bellows, outer polytetrafluoroethylbellows bellows is sintered at an entirety successively, owing to there being wire netting in the bellows of this tefloncompensator, structural strength is improved, but due to compensator in use, wire netting is directly stressed, under alternate load effect, wire netting easily damages, thus cause the inefficacy of polytetrafluoroethylbellows bellows compensator.Therefore, need further research to improve the structural strength of polytetrafluoroethylbellows bellows, to extend polytetrafluoroethylbellows bellows compensator working life.
Summary of the invention
The utility model, for the deficiencies in the prior art, proposes a kind of high pressure resistant polytetrafluoroethylbellows bellows compensator that can significantly improve polytetrafluoroethylbellows bellows structural strength.
The utility model is achieved through the following technical solutions technical goal.
High pressure resistant polytetrafluoroethylbellows bellows compensator, comprises flange, polytetrafluoroethylbellows bellows; The Flange joint at described polytetrafluoroethylbellows bellows and two ends, forms bellow-type expansion structure; Described polytetrafluoroethylbellows bellows comprises polytetrafluoroethylene floor, metal net layer, outer polytetrafluoroethylene floor in clinkering all-in-one-piece from the inside to the outside; Its improvements are: the coated glass fiber reinforced layer in both sides of described metal net layer, and clinkering is in interior polytetrafluoroethylene floor, outer polytetrafluoroethylene floor; Fabric in described glass fiber reinforced layer is glass fiber cloth.
In said structure, the unit grid in described metal net layer is quadrilateral structure, axial, radial consistent respectively with described polytetrafluoroethylbellows bellows of quadrilateral two diagonal.
In said structure, outside the crest of described polytetrafluoroethylbellows bellows, be provided with stiffening ring.
In said structure, the cross section of described stiffening ring is in " C " or " U " shape.
The utility model compared with prior art, has following good effect:
1, the coated glass fiber reinforced layer in the both sides of metal net layer in polytetrafluoroethylbellows bellows; significantly improve bellows structure intensity; compensator in use; active force is born jointly by the glass fiber reinforced layer of metal net layer and metal net layer both sides; therefore; improve the force-bearing situation of metal net layer, also reduce the active force suffered by metal net layer, available protecting metal net layer.
2, the unit grid in metal net layer is quadrilateral structure; axial, radial consistent respectively with bellows of quadrilateral two diagonal; like this; therefore; power concentrates in unit grid two diagonal; unit grid distortion easily, is not easily pulled off, further available protecting metal net layer.
Be provided with stiffening ring outside the crest of 3, polytetrafluoroethylbellows bellows, when pressure increase in bellows, the crest of bellows is expanded to stiffening ring, bears pipeline pressure by stiffening ring, and therefore, the utility model can bear higher use pressure.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is I place's partial enlarged drawing in Fig. 1.
Embodiment
Below with reference to the accompanying drawings and the utility model is described in further detail in conjunction with the embodiments.
High pressure resistant polytetrafluoroethylbellows bellows compensator shown in accompanying drawing, comprises flange 1, polytetrafluoroethylbellows bellows 2; Polytetrafluoroethylbellows bellows 2 is connected with the flange 1 at two ends, forms bellow-type expansion structure; Polytetrafluoroethylbellows bellows 2 comprises polytetrafluoroethylene floor 2.1, glass fiber reinforced layer 2.2, metal net layer 2.3, glass fiber reinforced layer 2.2, outer polytetrafluoroethylene floor 2.5 in clinkering all-in-one-piece from the inside to the outside; Glass fiber reinforced layer 2.2 is coated on the both sides of metal net layer 2.3, and in the present embodiment, the fabric in glass fiber reinforced layer 2.2 is glass fiber cloth.
Unit grid in metal net layer 2.3 is quadrilateral structure, axial, radial consistent respectively with polytetrafluoroethylbellows bellows of quadrilateral two diagonal.
Be provided with stiffening ring 3 outside the crest of polytetrafluoroethylbellows bellows 2, in the present embodiment, the cross section of stiffening ring 3 is in " C ".
Certainly, the cross section of stiffening ring 3 also can be " U " shape.
Claims (4)
1. a high pressure resistant polytetrafluoroethylbellows bellows compensator, comprises flange (1), polytetrafluoroethylbellows bellows (2); Described polytetrafluoroethylbellows bellows (2) is connected with the flange (1) at two ends, forms bellow-type expansion structure; Described polytetrafluoroethylbellows bellows (2) comprises polytetrafluoroethylene floor (2.1), metal net layer (2.3), outer polytetrafluoroethylene floor (2.5) in clinkering all-in-one-piece from the inside to the outside; It is characterized in that: the coated glass fiber reinforced layer in the both sides (2.2) of described metal net layer (2.3), clinkering is in interior polytetrafluoroethylene floor (2.1), outer polytetrafluoroethylene floor (2.5); Fabric in described glass fiber reinforced layer (2.2) is glass fiber cloth.
2. high pressure resistant polytetrafluoroethylbellows bellows compensator according to claim 1, it is characterized in that: the unit grid in described metal net layer (2.3) is quadrilateral structure, axial, radial consistent respectively with described polytetrafluoroethylbellows bellows of quadrilateral two diagonal.
3. high pressure resistant polytetrafluoroethylbellows bellows compensator according to claim 1 and 2, is characterized in that: be provided with stiffening ring (3) outside the crest of described polytetrafluoroethylbellows bellows (2).
4. high pressure resistant polytetrafluoroethylbellows bellows compensator according to claim 3, is characterized in that: the cross section of described stiffening ring (3) is in " C " or " U " shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520090039.7U CN204785268U (en) | 2015-02-10 | 2015-02-10 | High pressure resistant polytetrafluoroethylene corrugated expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520090039.7U CN204785268U (en) | 2015-02-10 | 2015-02-10 | High pressure resistant polytetrafluoroethylene corrugated expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204785268U true CN204785268U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520090039.7U Expired - Fee Related CN204785268U (en) | 2015-02-10 | 2015-02-10 | High pressure resistant polytetrafluoroethylene corrugated expansion joint |
Country Status (1)
| Country | Link |
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| CN (1) | CN204785268U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725918A (en) * | 2017-10-31 | 2018-02-23 | 无锡市永兴金属软管有限公司 | A kind of corrugated flexible metal tube with shock-absorbing function |
| CN107906274A (en) * | 2017-10-31 | 2018-04-13 | 无锡市永兴金属软管有限公司 | A kind of corrugated flexible metal tube manufacture method with shock-absorbing function |
| CN114110289A (en) * | 2022-01-26 | 2022-03-01 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Large-compensation compact compensator |
-
2015
- 2015-02-10 CN CN201520090039.7U patent/CN204785268U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725918A (en) * | 2017-10-31 | 2018-02-23 | 无锡市永兴金属软管有限公司 | A kind of corrugated flexible metal tube with shock-absorbing function |
| CN107906274A (en) * | 2017-10-31 | 2018-04-13 | 无锡市永兴金属软管有限公司 | A kind of corrugated flexible metal tube manufacture method with shock-absorbing function |
| CN107725918B (en) * | 2017-10-31 | 2019-11-22 | 无锡市永兴金属软管有限公司 | A kind of corrugated flexible metal tube with shock-absorbing function |
| CN107906274B (en) * | 2017-10-31 | 2019-12-31 | 无锡市永兴金属软管有限公司 | Manufacturing method of corrugated metal hose with damping function |
| CN114110289A (en) * | 2022-01-26 | 2022-03-01 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Large-compensation compact compensator |
| CN114110289B (en) * | 2022-01-26 | 2022-04-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Large-compensation compact compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20170210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |