CN220016390U - High-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline - Google Patents
High-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline Download PDFInfo
- Publication number
- CN220016390U CN220016390U CN202321726306.6U CN202321726306U CN220016390U CN 220016390 U CN220016390 U CN 220016390U CN 202321726306 U CN202321726306 U CN 202321726306U CN 220016390 U CN220016390 U CN 220016390U
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- Prior art keywords
- polytetrafluoroethylene
- layer
- wall
- lining
- steel
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Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 116
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 116
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 115
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 239000002131 composite material Substances 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 238000004804 winding Methods 0.000 description 7
- 230000008602 contraction Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model relates to the technical field of polytetrafluoroethylene pipeline equipment, and discloses a high-temperature-resistant negative-pressure steel lining polytetrafluoroethylene pipeline, which comprises a steel lining outer pipe, wherein a first flange connection disc is fixedly arranged on the front surface of the steel lining outer pipe, a second flange connection disc is fixedly arranged on the back surface of the steel lining outer pipe, a filling resin layer is fixedly arranged on the inner wall of the steel lining outer pipe, and after the polytetrafluoroethylene composite pipeline lining and the filling resin layer are arranged, the filling resin layer is solidified and bitten with the corrugation on the outer wall of the polytetrafluoroethylene composite pipeline lining to form spiral corrugation.
Description
Technical Field
The utility model relates to the technical field of polytetrafluoroethylene pipeline equipment, in particular to a high-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline.
Background
The polytetrafluoroethylene tube is a plunger extrusion tube with high quality, and a special processing technology is adopted to tightly combine the steel tube and the plastic tube, so that the polytetrafluoroethylene tube can bear positive pressure of 1.6Mpa and negative pressure of 77Kpa; can be normally used at-60 to +260 ℃, and has reliable and excellent corrosion resistance. The transportation of highly corrosive gas and liquid at high temperature is not replaced by other pipelines.
The existing steel lined tetrafluoro straight pipe adopts a film formed by turning PTFE bars, and is wound, sintered and formed. The device is suitable for normal pressure and positive pressure conveying pipelines (such as three-waste treatment pipelines and the like), and is not suitable for pipelines with negative pressure (such as pipelines which can generate negative pressure by pumping in and out and by fall or abrupt cooling and the like). The loose lining winding pipe has the defects of thin wall, easy shrinkage of the pipe and easy fracture of the flange flanging part when negative pressure and temperature difference fluctuation are large.
Therefore, the utility model aims to solve the technical problems that how to enable the steel-lined polytetrafluoroethylene pipeline to have the capability of resisting negative pressure and large temperature difference fluctuation, so that the pipeline is not easy to collapse and the flange flanging part is easy to break.
Therefore, we propose a high temperature and negative pressure resistant steel lined polytetrafluoroethylene pipeline.
Disclosure of Invention
The utility model mainly solves the technical problems existing in the prior art and provides a high-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline.
In order to achieve the above purpose, the utility model adopts the following technical scheme that the high-temperature-resistant negative-pressure steel lining polytetrafluoroethylene pipeline comprises a steel lining outer pipe, wherein the front surface of the steel lining outer pipe is fixedly provided with a first flange connection disc, the back surface of the steel lining outer pipe is fixedly provided with a second flange connection disc, the inner wall of the steel lining outer pipe is fixedly provided with a filling resin layer, the inner wall of the filling resin layer is fixedly provided with a polytetrafluoroethylene composite pipeline lining, and the polytetrafluoroethylene composite pipeline lining comprises a first polytetrafluoroethylene layer.
Preferably, the outer wall of the first polytetrafluoroethylene layer is fixedly provided with a first spiral steel wire layer, and the outer wall of the first spiral steel wire layer is fixedly provided with a second polytetrafluoroethylene layer.
Preferably, the inner wall of the second polytetrafluoroethylene layer is fixedly connected with the outer wall of the first polytetrafluoroethylene layer.
Preferably, the outer wall of the second polytetrafluoroethylene layer is fixedly provided with a second spiral steel wire layer.
Preferably, a third polytetrafluoroethylene layer is fixedly arranged on the outer wall of the second spiral steel wire layer.
Preferably, the inner wall of the third polytetrafluoroethylene layer is fixedly connected with the outer wall of the second polytetrafluoroethylene layer.
Preferably, the outer wall of the third polytetrafluoroethylene layer is fixedly provided with a fourth polytetrafluoroethylene layer.
Preferably, the outer wall of the fourth polytetrafluoroethylene layer is fixedly connected with the inner wall of the filling resin layer.
Advantageous effects
The utility model provides a high-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline. The beneficial effects are as follows:
(1) According to the high-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline, the polytetrafluoroethylene composite pipeline lining and the filling resin layer are arranged, after the filling resin layer is solidified, the filling resin layer is meshed with the outer wall corrugation of the polytetrafluoroethylene composite pipeline lining to form spiral corrugation, the structure is similar to the combination of a nut and a bolt, on one hand, the expansion caused by heat and contraction caused by cold of the polytetrafluoroethylene composite pipeline lining can be effectively limited and compensated, the polytetrafluoroethylene composite pipeline lining can adapt to environments with larger temperature differences, and on the other hand, the negative pressure resistance of the polytetrafluoroethylene composite pipeline lining is obviously improved by utilizing the rigidity of the first spiral steel wire layer and the second spiral steel wire layer of the double-layer steel wires.
(2) This high temperature resistant negative pressure steel lining polytetrafluoroethylene pipeline through having set up fourth polytetrafluoroethylene layer, and the polytetrafluoroethylene layer can be according to the diameter standard of whole polytetrafluoroethylene composite pipeline lining to adjust polytetrafluoroethylene composite pipeline lining's diameter, in the polytetrafluoroethylene composite pipeline lining of being convenient for goes into the steel lining outer tube, has avoided leading to the unable problem placed in middle of polytetrafluoroethylene composite pipeline lining when inlaying because of polytetrafluoroethylene composite pipeline lining diameter is less than the inner wall diameter of steel lining outer tube far away.
(3) This high temperature resistant negative pressure steel lining polytetrafluoroethylene pipeline through having set up first spiral steel wire layer and second spiral steel wire layer, utilizes double-deck steel wire can further improve polytetrafluoroethylene composite pipeline lining holistic negative pressure resistant ability, makes polytetrafluoroethylene composite pipeline lining can be difficult for taking out under the stronger environment of negative pressure take place to take out the condition of flat deformation.
Drawings
FIG. 1 is a schematic view of the front overall structure of the present utility model;
FIG. 2 is a cross-sectional view of the front structure of the polytetrafluoroethylene composite pipeline of the utility model;
FIG. 3 is a cross-sectional view of the back side structure of the polytetrafluoroethylene composite pipeline of the utility model.
Legend description: 10. a steel lined outer tube; 11. a first flange connection pad; 12. a second flange connection pad; 13. a polytetrafluoroethylene composite pipe liner; 14. a first polytetrafluoroethylene layer; 15. a first spiral steel wire layer; 16. a second polytetrafluoroethylene layer; 17. a second spiral steel wire layer; 18. a third polytetrafluoroethylene layer; 19. a fourth polytetrafluoroethylene layer; 20. filling the resin layer.
Detailed Description
Embodiment one: a high-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline is shown in figure 1, and comprises a steel-lined outer pipe 10, wherein a first flange connection disc 11 is fixedly arranged on the front surface of the steel-lined outer pipe 10, a second flange connection disc 12 is fixedly arranged on the back surface of the steel-lined outer pipe 10, and a polytetrafluoroethylene composite pipeline lining 13 and a filling resin layer 20 are arranged, after the filling resin layer 20 is solidified, the filling resin layer is meshed with the corrugation on the outer wall of the polytetrafluoroethylene composite pipeline lining 13 to form spiral corrugation.
Embodiment two: on the basis of the first embodiment, as shown in fig. 2, a filling resin layer 20 is fixedly installed on the inner wall of the steel lining outer pipe 10, a polytetrafluoroethylene composite pipe liner 13 is fixedly installed on the inner wall of the filling resin layer 20, and by arranging a fourth polytetrafluoroethylene layer 19, the diameter of the polytetrafluoroethylene composite pipe liner 13 can be adjusted by the fourth polytetrafluoroethylene layer 19 according to the diameter standard of the integral polytetrafluoroethylene composite pipe liner 13, so that the polytetrafluoroethylene composite pipe liner 13 is conveniently lined into the steel lining outer pipe 10, and the problem that the polytetrafluoroethylene composite pipe liner 13 cannot be centered when being embedded due to the fact that the diameter of the polytetrafluoroethylene composite pipe liner 13 is far smaller than the diameter of the inner wall of the steel lining outer pipe 10 is avoided.
Embodiment III: on the basis of the first embodiment and the second embodiment, as shown in fig. 3, the polytetrafluoroethylene composite pipeline liner 13 comprises a first polytetrafluoroethylene layer 14, a first spiral steel wire layer 15 is fixedly installed on the outer wall of the first polytetrafluoroethylene layer 14, a second polytetrafluoroethylene layer 16 is fixedly installed on the outer wall of the first spiral steel wire layer 15, the inner wall of the second polytetrafluoroethylene layer 16 is fixedly connected with the outer wall of the first polytetrafluoroethylene layer 14, a second spiral steel wire layer 17 is fixedly installed on the outer wall of the second polytetrafluoroethylene layer 16, a third polytetrafluoroethylene layer 18 is fixedly installed on the outer wall of the second spiral steel wire layer 17, the inner wall of the third polytetrafluoroethylene layer 18 is fixedly connected with the outer wall of the second polytetrafluoroethylene layer 16, a fourth polytetrafluoroethylene layer 19 is fixedly installed on the outer wall of the third polytetrafluoroethylene layer 18, and the outer wall of the fourth polytetrafluoroethylene layer 19 is fixedly connected with the inner wall of the filling resin layer 20.
The working principle of the utility model is as follows: firstly, winding a plurality of polytetrafluoroethylene films on a die, then spirally winding a steel wire (0.5-1 mm) on the polytetrafluoroethylene films, then winding a plurality of polytetrafluoroethylene films outside the steel wire, spirally winding the steel wire on the polytetrafluoroethylene films, then winding a plurality of polytetrafluoroethylene films outside the steel wire, then winding a plurality of polytetrafluoroethylene films outside the polytetrafluoroethylene films, ensuring the diameter of the integral polytetrafluoroethylene composite pipeline lining 13, and finally sintering and forming in a furnace. The polytetrafluoroethylene lining pipe manufactured by the process has smooth inner wall and spiral line corrugation formed on the outer wall due to the volume of the steel wire and the external elastic force of the steel wire. The polytetrafluoroethylene composite pipeline lining 13 is lined in the steel lining outer pipe 10, a filling resin layer 20 is filled in a gap between the outer wall of the polytetrafluoroethylene composite pipeline lining 13 and the inner wall of the steel lining outer pipe 10 to extrude residual air, the filling resin layer 20 can be tightly adhered with the steel lining outer pipe 10, and meanwhile, the filling resin layer 20 can be tightly wrapped on the outer wall of the spiral polytetrafluoroethylene composite pipeline lining 13. After the filled resin layer 20 is cured, a spiral corrugation which is engaged with the corrugation of the outer wall of the polytetrafluoroethylene composite pipe lining 13 is formed, and the structure is similar to the combination of a nut and a bolt. On one hand, the expansion and contraction of the polytetrafluoroethylene composite pipeline lining 13 can be effectively limited and compensated, so that the polytetrafluoroethylene composite pipeline lining can adapt to environments with larger temperature difference; on the other hand, the rigidity of the double layer steel wire first spiral steel wire layer 15 and the second spiral steel wire layer 17 is utilized to obviously improve the negative pressure resistance of the polytetrafluoroethylene composite pipeline lining 13.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a high temperature resistant negative pressure steel lining polytetrafluoroethylene pipeline, includes steel lining outer tube (10), its characterized in that: the front of the steel lining outer pipe (10) is fixedly provided with a first flange connection disc (11), the back of the steel lining outer pipe (10) is fixedly provided with a second flange connection disc (12), the inner wall of the steel lining outer pipe (10) is fixedly provided with a filling resin layer (20), the inner wall of the filling resin layer (20) is fixedly provided with a polytetrafluoroethylene composite pipeline lining (13), and the polytetrafluoroethylene composite pipeline lining (13) comprises a first polytetrafluoroethylene layer (14).
2. The high temperature and negative pressure resistant steel lined polytetrafluoroethylene tubing of claim 1, wherein: the outer wall of the first polytetrafluoroethylene layer (14) is fixedly provided with a first spiral steel wire layer (15), and the outer wall of the first spiral steel wire layer (15) is fixedly provided with a second polytetrafluoroethylene layer (16).
3. The high temperature and negative pressure resistant steel lined polytetrafluoroethylene tubing of claim 2, wherein: the inner wall of the second polytetrafluoroethylene layer (16) is fixedly connected with the outer wall of the first polytetrafluoroethylene layer (14).
4. The high temperature and negative pressure resistant steel lined polytetrafluoroethylene tubing of claim 2, wherein: the outer wall of the second polytetrafluoroethylene layer (16) is fixedly provided with a second spiral steel wire layer (17).
5. The high temperature and negative pressure resistant steel lined polytetrafluoroethylene tubing of claim 4, wherein: the outer wall of the second spiral steel wire layer (17) is fixedly provided with a third polytetrafluoroethylene layer (18).
6. The high temperature and negative pressure resistant steel lined polytetrafluoroethylene tubing of claim 5, wherein: the inner wall of the third polytetrafluoroethylene layer (18) is fixedly connected with the outer wall of the second polytetrafluoroethylene layer (16).
7. The high temperature and negative pressure resistant steel lined polytetrafluoroethylene tubing of claim 5, wherein: the outer wall of the third polytetrafluoroethylene layer (18) is fixedly provided with a fourth polytetrafluoroethylene layer (19).
8. The high temperature and negative pressure resistant steel lined polytetrafluoroethylene tubing of claim 7, wherein: the outer wall of the fourth polytetrafluoroethylene layer (19) is fixedly connected with the inner wall of the filling resin layer (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321726306.6U CN220016390U (en) | 2023-07-04 | 2023-07-04 | High-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321726306.6U CN220016390U (en) | 2023-07-04 | 2023-07-04 | High-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220016390U true CN220016390U (en) | 2023-11-14 |
Family
ID=88680723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321726306.6U Active CN220016390U (en) | 2023-07-04 | 2023-07-04 | High-temperature-resistant negative-pressure steel-lined polytetrafluoroethylene pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220016390U (en) |
-
2023
- 2023-07-04 CN CN202321726306.6U patent/CN220016390U/en active Active
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