CN210034666U - Large-caliber steel reinforced plastic pipe and flange - Google Patents
Large-caliber steel reinforced plastic pipe and flange Download PDFInfo
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- CN210034666U CN210034666U CN201920905238.7U CN201920905238U CN210034666U CN 210034666 U CN210034666 U CN 210034666U CN 201920905238 U CN201920905238 U CN 201920905238U CN 210034666 U CN210034666 U CN 210034666U
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Abstract
The utility model relates to a heavy-calibre steel reinforcing plastic tubing and flange, this steel reinforcing plastic tubing include plastics inner tube and steel pipe, the external diameter adaptation of plastics inner tube the internal diameter of steel pipe, the plastics inner tube includes a plurality of section of jurisdiction, all the section of jurisdiction can splice in proper order and form the plastics inner tube, every the section of jurisdiction is the composite plastic piece including first plastic layer and second plastic layer, first plastic layer bond in steel pipe inner wall, adjacent two hot melt welding between the section of jurisdiction. Application a heavy-calibre steel reinforcing plastic tubing, adopt bonding process can be direct, quick, convenient will the section of jurisdiction bond in steel pipe inner wall to intraductal contact water the second plastic layer adopts the plastics material of innoxic side effect, can satisfy the drinking water demand, this steel reinforcing plastic tubing simple structure, it is convenient to make, production efficiency is high, and the wholeness can be good.
Description
Technical Field
The utility model relates to the field of pipelines, especially a heavy-calibre steel reinforcing plastic tubing and flange.
Background
The manufacture of large-diameter (diameter is larger than 2m) plastic pressure pipes is always a difficult problem in the industry, for example, if the large-diameter plastic pressure pipes are produced by adopting an extrusion molding method, production equipment is expensive, and meanwhile, the pressure pipe wall thickness is easy to generate and cannot meet the requirements, eccentricity is poor, air bubbles exist and the like, so that the problems that the quality is not met with the requirements, the yield is low and the like are caused, and therefore, the industry provides a way for producing the large-diameter plastic pressure pipes in a segment assembling mode (similar to the way that supporting segments of tunnels are combined into circular tunnels in shield subway construction).
However, the plastic pressure tube sheet has large size, large thickness and large production difficulty, such as difficult cooling, large deformation after cooling and the like, so the process for manufacturing the large-diameter plastic pressure tube by adopting the assembly method has large difficulty and low efficiency, and the problems are required to be solved.
Chinese patent application No. 2019103956857 discloses a heavy-calibre steel reinforcing plastic tubing and flange, and it adopts the steel pipe as the outer support skeleton of plastic tubing, connects the plastics section of jurisdiction in the steel pipe and forms the whole pipe of plastics, effectively solves above-mentioned problem, but its mode through bolted connection or steel mesh scarf joint still has the technology complicacy, and is inefficient, the inconvenient scheduling problem of operation.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: the large-caliber steel reinforced plastic pipe and the flange are provided aiming at the problems that the prior art adopts a steel pipe as an outer support framework of the plastic pipe, connects a plastic pipe piece in the steel pipe and forms a plastic whole pipe, but the plastic whole pipe is still complex in process, low in efficiency, inconvenient to operate and the like in a mode of bolt connection or steel mesh scarf joint.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a heavy-calibre steel reinforcing plastic tubing, includes plastics inner tube and steel pipe, the external diameter adaptation of plastics inner tube the internal diameter of steel pipe, the plastics inner tube includes a plurality of section of jurisdiction, all the section of jurisdiction can splice in proper order and form the plastics inner tube, every the section of jurisdiction is the plastic sheet complex including first plastic layer and second plastic layer, first plastic layer bond in steel pipe inner wall, adjacent two the hot melt welding between the section of jurisdiction.
The first plastic layer is made of a plastic material capable of being bonded to the surface of the metal, and the second plastic layer is made of a plastic material which is free of toxic and side effects, corrosion-resistant and easy to weld.
Adopt a heavy-calibre steel reinforcing plastic tubing, adopt bonding process can be direct, quick, convenient will the section of jurisdiction bond in steel pipe inner wall to intraductal contact water the second plastic layer adopts the plastics material of innoxic side effect, can satisfy the drinking water demand, this steel reinforcing plastic tubing simple structure, it is convenient to make, production efficiency is high, and the wholeness can be good.
Preferably, the first plastic layer and the second plastic layer are co-extruded structural members.
Preferably, the first plastic layer is a polar material structure layer made of PP (Polypropylene), PVC (polyvinyl chloride) or ABS (Acrylonitrile Butadiene Styrene plastic), and the polar material can be effectively adhered to the surface of the metal structure, and has high adhesion strength and is difficult to peel.
Preferably, the second plastic layer is a non-polar structural layer of PE (Polyethylene), and since PE is a non-polar material, it is difficult to directly adhere to the surface of the metal structure, and meanwhile, it has good corrosion resistance, no toxicity, and good weldability.
Preferably, two adjacent pipe pieces are welded through PE material melt in a hot melting mode, so that the inner wall of the large-caliber steel reinforced plastic pipe forms a PE whole pipe.
Preferably, the outer wall of the steel pipe is connected with a protective layer.
Preferably, the protective layer is a third plastic layer.
Preferably, the third plastic layer is a PE material structure layer, the third plastic layer embraces and connects in the steel pipe outer wall, in fact, the whole pipe of third plastic layer laminate in behind the steel pipe outer wall, through the hot melt plastics cooling process in naturally embrace in the steel pipe outer wall.
Preferably, the third plastic layer is a PE-PP composite layer, and a PP inner layer of the third plastic layer is bonded to the outer wall of the steel pipe.
Preferably, the protective layer is a lacquer layer.
Preferably, the steel pipe comprises an inner steel pipe and an outer steel pipe, and a plurality of steel stiffening ribs are connected between the inner steel pipe and the outer steel pipe.
By adopting the structure, the weight of the steel pipe can be reduced while the pressure bearing capacity of the steel pipe is kept.
The utility model also provides a heavy-calibre steel reinforced plastic flange, include as above arbitrary heavy-calibre steel reinforced plastic pipe, be connected with the steel flange dish on the steel pipe.
Adopt a heavy-calibre steel reinforced plastic flange, adopt bonding process can be direct, quick, convenient will the section of jurisdiction bond in steel pipe inner wall to the intraductal contact water the second plastic layer adopts the plastics material of innoxic side effect, can satisfy the drinking water demand, this steel reinforced plastic flange can act on the connector of drinking water raceway, its simple structure, and it is convenient to make, and production efficiency is high, and the wholeness can be good.
Preferably, the surface of the steel flange plate is connected with a protective layer.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the large-diameter steel reinforced plastic pipe can be directly, quickly and conveniently bonded to the inner wall of the steel pipe by adopting a bonding process, and the second plastic layer which is in contact with a water body in the pipe is made of a plastic material without toxic or side effect, so that the requirement of drinking water can be met;
2. by adopting the structure, the weight of the steel pipe can be reduced while the bearing capacity of the steel pipe is kept;
3. application a heavy-calibre steel reinforced plastic flange, adopt bonding process can be direct, quick, convenient will the section of jurisdiction bond in steel pipe inner wall to the intraductal contact water the second plastic layer adopts the plastics material of innoxic side effect, can satisfy the drinking water demand, this steel reinforced plastic flange can act on the connector of drinking water raceway, its simple structure, and it is convenient to make, and production efficiency is high, and the wholeness can be good.
Drawings
FIG. 1 is a schematic structural view of a large-caliber steel reinforced plastic pipe according to example 1;
FIG. 2 is a schematic structural view of the segment of FIG. 1;
FIG. 3 is a schematic longitudinal cross-sectional view of a large-caliber steel reinforced plastic pipe according to example 1;
fig. 4 is a schematic structural view of the large-caliber steel reinforced plastic flange in embodiment 2.
The labels in the figure are: 1-plastic inner pipe, 11-pipe piece, 12-first plastic layer, 13-second plastic layer, 14-melt, 2-steel pipe, 21-inner steel pipe, 22-outer steel pipe, 23-steel stiffening rib, 3-protective layer and 4-steel flange plate.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1-3, the utility model relates to a large-caliber steel reinforced plastic pipe, which comprises a plastic inner pipe 1 and a steel pipe 2.
As shown in fig. 1, the outer diameter of the plastic inner pipe 1 is adapted to the inner diameter of the steel pipe 2, the plastic inner pipe 1 comprises a plurality of pipe pieces 11, and all the pipe pieces 11 can be spliced in sequence to form the plastic inner pipe 1.
As shown in fig. 1-2, each of the tube sheets 11 is a composite plastic sheet co-extruded with a first plastic layer 12 and a second plastic layer 13, the first plastic layer 12 is made of a plastic material, such as PP, PVC or ABS, capable of being bonded to a metal surface, and the second plastic layer 13 is made of a plastic material, such as PE, free of toxic and side effects.
As shown in fig. 1 and 3, the first plastic layer 12 is bonded to the inner wall of the steel pipe 2, and two adjacent pipe pieces 11 are welded by hot melting of a PE melt 14, so that the inner wall of the large-caliber steel reinforced plastic pipe forms a PE whole pipe.
As shown in fig. 3, the outer wall of the steel pipe 2 is connected with a protective layer 3, the protective layer 3 is a third plastic layer, the third plastic layer is a PE-PP composite layer, and a PP inner layer of the third plastic layer is bonded to the outer wall of the steel pipe 2.
As shown in fig. 3, the steel pipe 2 includes an inner steel pipe 21 and an outer steel pipe 22, and a plurality of steel stiffeners 23 are connected between the inner steel pipe 21 and the outer steel pipe 22, so that the weight of the steel pipe 2 can be reduced while the pressure-bearing capacity of the steel pipe 2 is maintained.
Application a heavy-calibre steel reinforcing plastic tubing, adopt bonding process can be direct, quick, convenient will section of jurisdiction 11 bond in 2 inner walls of steel pipe to the intraductal contact water second plastic layer 13 adopts the plastics material of innoxious side effect, can satisfy the drinking water demand, this steel reinforcing plastic tubing simple structure, it is convenient to make, production efficiency is high, and the wholeness can be good.
Example 2
As shown in fig. 4, a heavy-calibre steel reinforced plastic flange, include as embodiment 1 heavy-calibre steel reinforced plastic pipe, be connected with steel flange dish 4 on steel pipe 2, 4 surface connections of steel flange dish have protective layer 3.
Application a heavy-calibre steel reinforced plastic flange, adopt bonding process can be direct, quick, convenient will section of jurisdiction 11 bond in 2 inner walls of steel pipe to the intraductal contact water second plastic layer 13 adopts innoxic side effect's plastics material, can satisfy the drinking water demand, this steel reinforced plastic flange can act on the connector of drinking water pipeline, its simple structure, and it is convenient to make, and production efficiency is high, and the wholeness can be good.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a heavy-calibre steel reinforcing plastic tubing, includes plastics inner tube (1) and steel pipe (2), its characterized in that, the external diameter adaptation of plastics inner tube (1) the internal diameter of steel pipe (2), plastics inner tube (1) includes a plurality of section of jurisdiction (11), all section of jurisdiction (11) can splice in proper order and form plastics inner tube (1), every section of jurisdiction (11) is the composite plastic piece including first plastic layer (12) and second plastic layer (13), first plastic layer (12) bond in steel pipe (2) inner wall, adjacent two hot melt welding between section of jurisdiction (11).
2. A heavy gauge steel reinforced plastic pipe according to claim 1, wherein the first plastic layer (12) is a structural layer of PP, PVC or ABS material.
3. A heavy gauge steel reinforced plastic pipe according to claim 1, wherein the second plastic layer (13) is a structural layer of PE.
4. A heavy caliber steel reinforced plastic pipe according to claim 3 wherein adjacent two of the pipe pieces (11) are welded by heat fusion of PE material melt (14).
5. A heavy caliber steel reinforced plastic pipe according to claim 1, characterized in that the outer wall of the steel pipe (2) is connected with a protective layer (3).
6. Heavy gauge steel reinforced plastic pipe according to claim 5, characterized in that the protective layer (3) is a third plastic layer or a paint layer.
7. The heavy-calibre steel-reinforced plastic pipe according to claim 6, characterized in that the third plastic layer is a PE structural layer, and the third plastic layer is embraced and connected to the outer wall of the steel pipe (2).
8. The heavy caliber steel reinforced plastic pipe according to claim 6, wherein the third plastic layer is a PE-PP composite layer, and the PP inner layer of the third plastic layer is bonded to the outer wall of the steel pipe (2).
9. A large caliber steel reinforced plastic pipe according to any one of claims 1 to 7, wherein the steel pipe (2) comprises an inner steel pipe (21) and an outer steel pipe (22), and a plurality of steel stiffening ribs (23) are connected between the inner steel pipe (21) and the outer steel pipe (22).
10. A large-caliber steel-reinforced plastic flange, characterized in that it comprises a large-caliber steel-reinforced plastic pipe according to any one of claims 1 to 9, and a steel flange plate (4) is connected to the steel pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920905238.7U CN210034666U (en) | 2019-06-14 | 2019-06-14 | Large-caliber steel reinforced plastic pipe and flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920905238.7U CN210034666U (en) | 2019-06-14 | 2019-06-14 | Large-caliber steel reinforced plastic pipe and flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034666U true CN210034666U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920905238.7U Expired - Fee Related CN210034666U (en) | 2019-06-14 | 2019-06-14 | Large-caliber steel reinforced plastic pipe and flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210034666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271512A (en) * | 2020-03-11 | 2020-06-12 | 支焕 | PE double-layer pipe and processing technology |
-
2019
- 2019-06-14 CN CN201920905238.7U patent/CN210034666U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271512A (en) * | 2020-03-11 | 2020-06-12 | 支焕 | PE double-layer pipe and processing technology |
| CN111271512B (en) * | 2020-03-11 | 2021-09-21 | 支焕 | PE double-layer pipe and processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210614 |