CN203258267U - Negative pressure preventing creased pipe with lining made of Teflon material - Google Patents
Negative pressure preventing creased pipe with lining made of Teflon material Download PDFInfo
- Publication number
- CN203258267U CN203258267U CN 201220686738 CN201220686738U CN203258267U CN 203258267 U CN203258267 U CN 203258267U CN 201220686738 CN201220686738 CN 201220686738 CN 201220686738 U CN201220686738 U CN 201220686738U CN 203258267 U CN203258267 U CN 203258267U
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- CN
- China
- Prior art keywords
- negative pressure
- steel
- dried shrimp
- pipe
- creased
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a negative pressure preventing creased pipe with the lining made of the Teflon material. The negative pressure preventing creased pipe comprises steel creased sections (1) and Teflon lining layers (2). The negative pressure preventing creased pipe is characterized in that each steel creased section (1) is a pipe, the section of each pipe is trapezoidal, flanges (3) are arranged at the pipe openings at the two ends, the Teflon lining layers (2) are arranged on the pipe inner wall of each steel creased section (1) in a lining mode, at least two steel creased sections (1) provided with the Teflon lining layers (2) in a lining mode are connected to form a bent pipe. Negative pressure rings (4) are fixed in the middle of the inner surfaces of the Teflon lining layers (2). Turned edges matched with the flanges (3) are arranged at the two ends of each Teflon lining layer (2). Exhaust holes are respectively formed in the two ends of each steel creased section (1). The negative pressure preventing creased pipe is low in use cost, simple in structure, resistant to negative pressure and high temperature, and long in service life.
Description
Technical field
The utility model belongs to the pipe fitting technical field, specifically relates 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, corrosive medium is strong etc., and the relatively harsher pipeline of process conditions 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
The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of user cost of providing 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 utility model, 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 utility model 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 utility model 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 the beneficial effects of the utility model.
Description of drawings
Fig. 1 is structural representation of the present utility model;
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 effect thereof to according to the anti-negative pressure that the utility model proposes 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.
Described in the utility modelly be not limited to the embodiment described in the embodiment, those skilled in the art draw other mode of execution according to the technical solution of the utility model, belong to equally technological innovation scope of the present utility model.Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model 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 is characterized in that: be fixed with negative pressure circle (4) 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 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 |
|---|---|---|---|
| CN 201220686738 CN203258267U (en) | 2012-12-13 | 2012-12-13 | Negative pressure preventing creased pipe with lining made of Teflon material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686738 CN203258267U (en) | 2012-12-13 | 2012-12-13 | Negative pressure preventing creased pipe with lining made of Teflon material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203258267U true CN203258267U (en) | 2013-10-30 |
Family
ID=49470830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220686738 Withdrawn - After Issue CN203258267U (en) | 2012-12-13 | 2012-12-13 | Negative pressure preventing creased pipe with lining made of Teflon material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203258267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016883A (en) * | 2012-12-13 | 2013-04-03 | 贵州瓮福蓝天氟化工股份有限公司 | Negative pressure-preventing polytetrafluoroethylene-lined creased elbow |
-
2012
- 2012-12-13 CN CN 201220686738 patent/CN203258267U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016883A (en) * | 2012-12-13 | 2013-04-03 | 贵州瓮福蓝天氟化工股份有限公司 | Negative pressure-preventing polytetrafluoroethylene-lined creased elbow |
| CN103016883B (en) * | 2012-12-13 | 2016-04-13 | 贵州瓮福蓝天氟化工股份有限公司 | The liner PTFE dried shrimp elbow of anti-negative pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131030 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |