CN103016883A - Negative pressure-preventing polytetrafluoroethylene-lined creased elbow - Google Patents
Negative pressure-preventing polytetrafluoroethylene-lined creased elbow Download PDFInfo
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- CN103016883A CN103016883A CN2012105373216A CN201210537321A CN103016883A CN 103016883 A CN103016883 A CN 103016883A CN 2012105373216 A CN2012105373216 A CN 2012105373216A CN 201210537321 A CN201210537321 A CN 201210537321A CN 103016883 A CN103016883 A CN 103016883A
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- negative pressure
- steel
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- dried shrimp
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Abstract
The invention discloses a negative pressure-preventing polytetrafluoroethylene-lined creased elbow which comprises steel creased sections (1) and polytetrafluoroethylene-lined layers (2) and is characterized in that: the steel creased sections (1) are pipes with ladder-shaped cross sections; flanges (3) are arranged at pipe ports at two ends; the polytetrafluoroethylene-lined layers (2) are lined on inner walls of the steel creased sections (1); at least two steel creased sections (1) lined with the polytetrafluoroethylene-lined layers (2) are connected into an elbow; negative pressure rings (4) are fixed in the middle of inner surfaces of the polytetrafluoroethylene-lined layers (2); turned edges which are matched with the flanges (3) are arranged at the two ends of the polytetrafluoroethylene-lined layers (2); and exhaust holes are respectively arranged at two ends of the steel creased sections (1). The negative pressure-preventing polytetrafluoroethylene-lined creased elbow has the advantages of low use cost, simple structure, negative pressure resistance, high temperature resistance and long service life.
Description
Technical field
The invention belongs to the pipe fitting technical field, specifically relate to the elbow of anti-negative pressure, high temperature resistant, corrosion resistant.
Background technique
At present, the elbow of liner PTFE, multiplex high in temperature, the relatively harsher pipeline of the process conditions such as corrosive medium is strong connects.Its processing method is after steel elbow processes, and carries out mold pressing liner PTFE, carries out the external coating corrosion resistant coating again.In use because temperature is high, it is strong that negative pressure reaches greatly corrosive medium, and cementability is relatively poor between steel elbow and the liner PTFE, accompany air between the two, meet the high-temperature gas expansion and cause the easy bubbling of tetrafluoro backing layer, break, it is one of tetrafluoro backing layer reason of easily tearing, thereby the tetrafluoro backing layer is torn and can be made material contact the corrosion steel part with steel part, causes material to leak outside, so that PTFE lining elbow can't use.Thereby the elbow of existing liner PTFE is low working life, and maintenance expenses is high, and maintain and replace is frequent, causes the equipment driving rate low, brings huge economic loss to enterprise.
Summary of the invention
A kind of user cost that the object of the invention is to overcome above-mentioned shortcoming and provide is low, simple in structure, the liner PTFE dried shrimp elbow of the anti-negative pressure of anti-negative pressure, high temperature resistant, long service life.
The liner PTFE dried shrimp elbow of a kind of anti-negative pressure of the present invention, comprise steel dried shrimp joint, tetrafluoro backing layer, wherein: steel dried shrimp joint is that the cross section is trapezoidal pipe, the two ends mouth of pipe is provided with flange, the tetrafluoro backing layer is lining in steel dried shrimp pipe joint inwall, and at least two steel dried shrimp joints that are lined with the tetrafluoro backing layer connect into elbow.
The liner PTFE dried shrimp elbow of above-mentioned anti-negative pressure, it is characterized in that: the negative pressure circle is fixed in the middle of the tetrafluoro backing layer internal surface.
The liner PTFE dried shrimp elbow of above-mentioned anti-negative pressure is characterized in that: the negative pressure circle is that the outer surface that the fluorine material bushing is placed in round steel is made.
The liner PTFE dried shrimp elbow of above-mentioned anti-negative pressure is characterized in that: being welded with a ring cross-section in the middle part of in the steel dried shrimp joint steel pipe joint is saddle-shaped back-up ring, and the negative pressure circle is close on tetrafluoro backing layer corresponding to back-up ring shape of a saddle groove.
The liner PTFE dried shrimp elbow of above-mentioned anti-negative pressure, it is characterized in that: tetrafluoro backing layer two ends are provided with the flange that matches with flange,
The liner PTFE dried shrimp elbow of above-mentioned anti-negative pressure is characterized in that: have exhaust hole on the steel dried shrimp joint steel pipe joint.
The present invention compared with prior art, have following obvious advantage and beneficial effect, as can be known from the above technical solutions: connect into elbow by at least two steel dried shrimp joints that are lined with the tetrafluoro backing layer, the setting that reaches flange is easy to partial disassembly and changes, thereby has greatly saved cost.Tetrafluoro backing layer two ends are provided with the flange that matches with flange, are conducive to sealing; The outer surface that the fluorine material bushing is placed in round steel is made the negative pressure circle, it is close on the tetrafluoro backing layer that middle part welding back-up ring shape of a saddle groove is corresponding in the steel dried shrimp joint steel pipe joint, make the negative pressure circle fix and can not slide, thereby efficiently solve tetrafluoro lining elbow easily bubbling, aliquation and tear under the synergy of high temperature and negative pressure; Have exhaust hole at the steel pipe joint, the high temperature that utilizes equipment to be in operation expands the air between backing layer and the steel part and discharges, thereby effectively protects tetrafluoro backing layer material; Therefore the present invention is difficult for bubbling, is difficult for the drawing crack damage, can effectively protect the tetrafluoro backing layer, improves the working life of tetrafluoro backing layer, simplify manufacturing procedure, and user cost is low, simple in structure, anti-negative pressure, high temperature resistant.
Below by embodiment, further specify beneficial effect of the present invention.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of negative pressure circle.
Mark among the figure:
1, steel dried shrimp joint; 2, tetrafluoro backing layer; 3, flange; 4, negative pressure circle; 5, fluorine material bushing; 6, round steel; 7, back-up ring.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, liner PTFE dried shrimp elbow embodiment, feature and the effect thereof of the anti-negative pressure that foundation the present invention is proposed are described in detail as follows.
Referring to Fig. 1-2, a kind of liner PTFE dried shrimp elbow of anti-negative pressure, comprise steel dried shrimp joint 1, tetrafluoro backing layer 2, wherein: steel dried shrimp joint 1 is that the cross section is trapezoidal pipe, the two ends mouth of pipe is provided with flange 3, tetrafluoro backing layer 2 is lining in the steel dried shrimp and saves 1 inner tube wall, and at least two steel dried shrimp joints 1 that are lined with tetrafluoro backing layer 2 connect into elbow.Negative pressure circle 4 is fixed in the middle of tetrafluoro backing layer 2 internal surfaces.Negative pressure circle 4 is that the outer surface that fluorine material bushing 5 is placed in round steel 6 is made, and the steel dried shrimp saves in the 1 steel pipe joint middle part, and to be welded with a ring cross-section be saddle-shaped back-up ring 7, and the negative pressure circle is close to tetrafluoro backing layer corresponding to back-up ring 7 shape of a saddle grooves.Tetrafluoro backing layer 2 two ends are provided with the flange that matches with flange 3, and the steel dried shrimp saves on the 1 steel pipe joint and has exhaust hole.
Can be as required during use, adopt two or more steel dried shrimp joints that is lined with tetrafluoro backing layer 21 to combine by the link adpting flange.
Of the present inventionly be not limited to the embodiment described in the embodiment, those skilled in the art's technological scheme according to the present invention draws other mode of execution, belongs to equally technological innovation scope of the present invention.Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. the liner PTFE dried shrimp elbow of an anti-negative pressure, comprise steel dried shrimp joint (1), tetrafluoro backing layer (2), it is characterized in that: steel dried shrimp joint (1) is that the cross section is trapezoidal pipe, the two ends mouth of pipe is provided with flange (3), tetrafluoro backing layer (2) is lining in steel dried shrimp joint (1) inner tube wall, and at least two steel dried shrimp joints (1) that are lined with tetrafluoro backing layer (2) connect into elbow.
2. the liner PTFE dried shrimp elbow of anti-negative pressure as claimed in claim 1, it is characterized in that: negative pressure circle (4) is fixed in the middle of tetrafluoro backing layer (2) internal surface.
3. the liner PTFE dried shrimp elbow of anti-negative pressure as claimed in claim 1 or 2 is characterized in that: negative pressure circle (4) is that the outer surface that fluorine material bushing (5) is placed in round steel (6) is made.
4. the liner PTFE dried shrimp elbow of anti-negative pressure as claimed in claim 3, it is characterized in that: being welded with a ring cross-section in the middle part of in steel dried shrimp joint (1) steel pipe joint is saddle-shaped back-up ring (7), and the negative pressure circle is close to tetrafluoro backing layer corresponding to back-up ring (7) shape of a saddle groove.
5. the liner PTFE dried shrimp elbow of anti-negative pressure as claimed in claim 4, it is characterized in that: tetrafluoro backing layer (2) two ends are provided with the flange that matches with flange (3).
6. the liner PTFE dried shrimp elbow of anti-negative pressure as claimed in claim 5 is characterized in that: have exhaust hole on steel dried shrimp joint (1) steel pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537321.6A CN103016883B (en) | 2012-12-13 | 2012-12-13 | The liner PTFE dried shrimp elbow of anti-negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537321.6A CN103016883B (en) | 2012-12-13 | 2012-12-13 | The liner PTFE dried shrimp elbow of anti-negative pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103016883A true CN103016883A (en) | 2013-04-03 |
| CN103016883B CN103016883B (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210537321.6A Active CN103016883B (en) | 2012-12-13 | 2012-12-13 | The liner PTFE dried shrimp elbow of anti-negative pressure |
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| CN (1) | CN103016883B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081469U (en) * | 1990-12-31 | 1991-07-24 | 温州市氟塑设备制造厂 | Fluon-rubber compound compensator |
| JPH0914577A (en) * | 1995-06-29 | 1997-01-17 | Ishikawajima Harima Heavy Ind Co Ltd | Lining structure for high temperature pipe |
| CN2274705Y (en) * | 1996-09-18 | 1998-02-18 | 温州市防腐设备厂 | Metal corrugated expension joint |
| KR20110040049A (en) * | 2009-10-13 | 2011-04-20 | (주)일신정밀기계 | Apparatus for connecting pipes and method thereof |
| CN102588702A (en) * | 2012-03-14 | 2012-07-18 | 江苏三汇联发管业有限公司 | Corrosion-resistant alloy lined composite mitre elbow and manufacturing method thereof |
| CN203258267U (en) * | 2012-12-13 | 2013-10-30 | 贵州瓮福蓝天氟化工股份有限公司 | Negative pressure preventing creased pipe with lining made of Teflon material |
-
2012
- 2012-12-13 CN CN201210537321.6A patent/CN103016883B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081469U (en) * | 1990-12-31 | 1991-07-24 | 温州市氟塑设备制造厂 | Fluon-rubber compound compensator |
| JPH0914577A (en) * | 1995-06-29 | 1997-01-17 | Ishikawajima Harima Heavy Ind Co Ltd | Lining structure for high temperature pipe |
| CN2274705Y (en) * | 1996-09-18 | 1998-02-18 | 温州市防腐设备厂 | Metal corrugated expension joint |
| KR20110040049A (en) * | 2009-10-13 | 2011-04-20 | (주)일신정밀기계 | Apparatus for connecting pipes and method thereof |
| CN102588702A (en) * | 2012-03-14 | 2012-07-18 | 江苏三汇联发管业有限公司 | Corrosion-resistant alloy lined composite mitre elbow and manufacturing method thereof |
| CN203258267U (en) * | 2012-12-13 | 2013-10-30 | 贵州瓮福蓝天氟化工股份有限公司 | Negative pressure preventing creased pipe with lining made of Teflon material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103016883B (en) | 2016-04-13 |
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