CN103047489A - Flange-free plastic coated pipeline - Google Patents
Flange-free plastic coated pipeline Download PDFInfo
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- CN103047489A CN103047489A CN2011103092016A CN201110309201A CN103047489A CN 103047489 A CN103047489 A CN 103047489A CN 2011103092016 A CN2011103092016 A CN 2011103092016A CN 201110309201 A CN201110309201 A CN 201110309201A CN 103047489 A CN103047489 A CN 103047489A
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- flange
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- pipeline
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Abstract
The invention discloses a flange-free connected plastic coated pipeline. A steel tube of the plastic coated pipeline uses a carbon steel tube as a body and comprises stainless steel connectors, a butt welding seam, a lining plastic layer, lining plastic positioning rings and a scene butt welding seam. The stainless steel connectors are arranged at two ends of the main body carbon steel tube in a butt welding mode and used for connecting other pipelines; the lining plastic layer which is provided with an anti-corrosion effect are attached to inner wall of the carbon steel tube, and the lining plastic positioning rings are arranged at two ends of the lining plastic layer respectively. The flange-free plastic coated pipeline has the advantages that the pipeline can be connected without a flange and has mechanical strength of the whole steel tube and corrosion resistance of plastics; and when the flange-free plastic coated pipeline is compared with existing pipelines, anticorrosion blind spots are effectively eliminated, stable and reliable product qualities can be guaranteed, and the construction is convenient and rapid.
Description
Technical field
The present invention relates to the pipeline field, relate in particular to a kind of flangeless conjunction plastic coated composite steel pipe.
Background technique
As everyone knows, traditional plastic-coated steel adopts flange to connect more.Rubber gasket is generally adopted in the sealing of flange junction plane, and the construction and installation technical requirements is high, speed is slow, and because the position of flange connecting hole and the construction of angle are difficult to realize the production of standardization spare part pipeline.Particularly because the rubber gasket aging quality resistance is relatively poor, and working life is shorter, general 2-3 just needs to change once, not only takes a lot of work but also time-consuming, and is particularly more difficult for the maintain and replace of buried pipe and high vacant duct.Prior art is all attempted to substitute traditional flange with welding and is connected, and the solution of proposition has mostly adopted the stainless steel inner lining sleeve pipe, these schemes all in various degree exist difficulty of construction large, technological requirement is high, and is difficult to eliminate the deficiency of corroding blind spot.
No. 2842129 bulletins of Chinese patent " Welded plastic-coated steel pipe " have then proposed a solution, at the white Steel Sleeve of carbon steel tube joint interpolation 10 to 20cm length, implement pipeline welding during on-the-spot the installation.But owing to playing the white Steel Sleeve very thin thickness of anticorrosive effect, when installing at the scene the technical requirements of contraposition high, construction is difficulty very; And need to adopt when welding at the scene two kinds of different welding rods and two kinds of different welding manners to finish the welding of unlike material.This technology welding difficulty is large, time-consuming, is difficult to guarantee the quality of Site Welding, and is more difficult for the large aperture pipeline especially.Also have relatively high expectations with sealing technology for coincideing of the white Steel Sleeve of liner and main pipe in addition, eliminate comparatively difficulty of corrosion blind spot.
Chinese patent 101776190A number bulletin " the plastic-coated steel inwall is excused from a college course multiple welded connection technology " proposed the scheme approximate with No. 2842129 bulletins of Chinese patent " Welded plastic-coated steel pipe ".This scheme has been implemented the flange processing with the stainless steel sleeve pipe in joining part, then welds with the welding rod of unlike material at the scene.This scheme is compared with No. 2842129 bulletins " Welded plastic-coated steel pipe ", though the contraposition of welding has had improvement on requiring at the scene, also has identical difficulty.Flange treatment technology for the stainless steel steel bushing is had relatively high expectations, and difficulty of construction is large; Particularly according to the explanation of this scheme, still need to adopt the welding rod of unlike material during welding, and because the impact of flange has and reduces the weld effective thickness, reduce the risk of pipeline bulk strength.。
Summary of the invention
In view of this, for solving the problems of the technologies described above, the invention provides a kind of can't blue plastic-coated pipeline.
Accordingly, the described of one embodiment of the present invention can't blue plastic-coated pipeline, and comprising: carbon steel tube main body, stainless joint, butt weld, plastic lining layer, lining are moulded positioning ring and field joint weld seam, described stainless joint is butt-welded in the two ends of described carbon steel tube main body, is used for connecting other pipelines.
As a further improvement on the present invention, described carbon steel tube main body inner wall is with described plastic lining layer.
As a further improvement on the present invention, be respectively equipped with described lining at described plastic lining layer two ends and mould positioning ring.
Compared to prior art, the invention has the beneficial effects as follows: pipeline need not flange and connects, and has namely possessed the mechanical strength of whole steel pipe, has had again the corrosion resistance of plastics.Compare with existing product, effectively eliminated anticorrosion blind spot, stable and reliable product quality, convenient and quick construction.
Description of drawings
Fig. 1 is traditional steel-pipe construction schematic diagram;
Fig. 2 is structural representation of the present invention.
Among the figure: 1, stainless joint; 2, butt weld; 3, carbon steel tube; 4, plastic lining layer; 5, lining is moulded positioning ring; 6, field joint weld seam.
Embodiment
Below in conjunction with description of drawings, with regard to one embodiment of the invention, structure of the present invention and workflow are described further.
As shown in Figure 1, of the present invention can't comprising by blue plastic-coated pipeline: carbon steel tube main body, stainless joint, butt weld, plastic lining layer, lining are moulded positioning ring and field joint weld seam, and described stainless joint is butt-welded in the two ends of described carbon steel tube main body, are used for connecting other pipelines; Described carbon steel tube main body inner wall is respectively equipped with described lining at described plastic lining layer two ends and moulds positioning ring with described plastic lining layer.
During construction, stainless joint 1 be use with carbon steel tube on an equal basis the stainless steel material of degree of weldering be processed into; Butt weld 2 processes before factory products dispatch from the factory; Carbon steel tube 3 is supervisor's material of the present invention; Plastic lining layer 4 consists of the lining of carbon steel tubes and moulds composite bed, and lining is moulded positioning ring 5 and is mainly used in serving as a contrast in the process of moulding spacing to the plastic lining layer position, plays again the measure that plastic lining layer is difficult for being caused by fluid scouring coating stripping simultaneously; Field joint weld seam 6 is that the present invention is at the position of construction and installation process need welding.
Owing to adopting welding technique, high strength and need not flange and connect, described plastic-coated steel had both possessed the mechanical strength of steel pipe, had again the corrosion resisting property of plastics.Placement adopts the stainless joint butt welding to connect, on the structure radical change traditional flange connection, made things convenient for the job site installation.
It is worth mentioning that, pipeline can carry out any cutting process according to on-the-spot duct length needs, has solved the restriction that the flange connections road makes length, has improved the installation rate of pipeline on largely.Because the position limitation of the flange hole when having save flange production and installation also is convenient to the standardized production of accessory and processing.Compare with the scheme of welding plastic-coated pipeline patents more of the prior art, greatly reduce and make and field erected technology acuracy requirement, convenient and quick construction has construct preferably feasibility and quality assurance.
Adopt the stainless joint butt welding to connect, pipeline has been save the rubber gasket of connection part, the rubber gasket that has solved the flange connections road is easily aging, will change problem once in two to three years, maintenance and the replacing of pipeline have effectively been reduced, depend on the anti-corrosion capacity of coating layer and stainless joint itself working life of pipeline fully, thereby prolonged the working life of product.This change is for not easily changeable buried pipe and high vacant duct, and its advantage is more obvious.
Adopt lining to mould the positioning ring technology, effectively controlled the coating layer coverage rate, effectively solved the peeling that the coating layer end may cause because of fluid scouring simultaneously.Adopt the welding of whole stainless joint, eliminated the welding difficulty of the identical bad or jointing of stainless steel inner lining sleeve pipe and dominant carbon steel pipe in some welded pipe lines of the prior art and the hidden danger of issuable corrosion blind spot.
Be to be understood that, although this specification is described according to embodiment, but be not that each embodiment only comprises an independently technological scheme, this narrating mode of specification only is for clarity sake, those skilled in the art should make specification as a whole, technological scheme among each embodiment also can through appropriate combination, form other embodiments that it will be appreciated by those skilled in the art that.
Above listed a series of detailed description only is specifying for feasibility embodiment of the present invention; they are not to limit protection scope of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention does and all should be included within protection scope of the present invention.
Claims (3)
- One kind can't blue plastic-coated pipeline, it is characterized in that, described carbon steel tube main body, stainless joint, butt weld, plastic lining layer, the lining of can't blue plastic-coated pipeline comprising moulded positioning ring and field joint weld seam, described stainless joint is butt-welded in the two ends of described carbon steel tube main body, is used for connecting other pipelines.
- According to claim 1 a kind of can't blue plastic-coated pipeline, it is characterized in that, described carbon steel tube main body inner wall is with described plastic lining layer.
- According to claim 2 a kind of can't blue plastic-coated pipeline, it is characterized in that, be respectively equipped with described lining at described plastic lining layer two ends and mould positioning ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103092016A CN103047489A (en) | 2011-10-13 | 2011-10-13 | Flange-free plastic coated pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103092016A CN103047489A (en) | 2011-10-13 | 2011-10-13 | Flange-free plastic coated pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047489A true CN103047489A (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103092016A Pending CN103047489A (en) | 2011-10-13 | 2011-10-13 | Flange-free plastic coated pipeline |
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| CN (1) | CN103047489A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1005497A (en) * | 1996-02-14 | 1997-08-21 | J C Ludowici & Son Ltd | Improvements in weldable lined pipes |
| GB2319315A (en) * | 1996-11-09 | 1998-05-20 | British Gas Plc | Method of joining lined pipes using a bridging member |
| RU2225562C1 (en) * | 2002-08-12 | 2004-03-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method of connection of steel pipes provided with internal plastic lining |
| FR2876773B1 (en) * | 2004-10-19 | 2007-02-02 | Saipem S A Sa | DRIVING HAVING AN INTERNAL SHIRT, IN PARTICULAR UNDERWATER DRIVING |
| CN201152404Y (en) * | 2007-12-25 | 2008-11-19 | 王莘 | Butt weld type plastic lined steel pipe |
| CN201348118Y (en) * | 2009-01-19 | 2009-11-18 | 江苏双达泵阀集团有限公司 | Acid-resistant pipeline |
| CN202252443U (en) * | 2011-10-13 | 2012-05-30 | 瞿海德 | Flange-free plastic coated pipeline |
-
2011
- 2011-10-13 CN CN2011103092016A patent/CN103047489A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1005497A (en) * | 1996-02-14 | 1997-08-21 | J C Ludowici & Son Ltd | Improvements in weldable lined pipes |
| GB2319315A (en) * | 1996-11-09 | 1998-05-20 | British Gas Plc | Method of joining lined pipes using a bridging member |
| RU2225562C1 (en) * | 2002-08-12 | 2004-03-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method of connection of steel pipes provided with internal plastic lining |
| FR2876773B1 (en) * | 2004-10-19 | 2007-02-02 | Saipem S A Sa | DRIVING HAVING AN INTERNAL SHIRT, IN PARTICULAR UNDERWATER DRIVING |
| CN201152404Y (en) * | 2007-12-25 | 2008-11-19 | 王莘 | Butt weld type plastic lined steel pipe |
| CN201348118Y (en) * | 2009-01-19 | 2009-11-18 | 江苏双达泵阀集团有限公司 | Acid-resistant pipeline |
| CN202252443U (en) * | 2011-10-13 | 2012-05-30 | 瞿海德 | Flange-free plastic coated pipeline |
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Application publication date: 20130417 |