CN102644807A - Middle-and-low pressure delivery seamless helical corrugated composite pipe and forming method thereof - Google Patents
Middle-and-low pressure delivery seamless helical corrugated composite pipe and forming method thereof Download PDFInfo
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- CN102644807A CN102644807A CN2012101268456A CN201210126845A CN102644807A CN 102644807 A CN102644807 A CN 102644807A CN 2012101268456 A CN2012101268456 A CN 2012101268456A CN 201210126845 A CN201210126845 A CN 201210126845A CN 102644807 A CN102644807 A CN 102644807A
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Abstract
Disclosed are a middle-and-low pressure delivery seamless helical corrugated composite pipe and a forming method thereof, mainly solving problems that existing low-pressure delivery composite pipes have defects of poor corrosion resistance of steel pipes, small caliber of steel-plastic composite orifice, and incomplete, unsmooth and leaky inner walls of water delivery pipes wound with reinforcing layers helically. The middle-and-low pressure delivery seamless helical corrugated composite pipe is characterized in that a reinforcing layer (2) and a polyethylene layer (3) are wound on the outer side of a core (1) sequentially, a plastic-coated steel strip layer (4) is wound on the outer side of the polyethylene layer (3), and a composite layer (5) is coated outside the plastic-coated steel strip layer (4). The middle-and-low pressure delivery seamless helical corrugated composite pipe has the advantages of material economization, inner wall smoothness, and high corrosion resistance, strength and ring stiffness. The forming method can realize one-step forming on one production line and accordingly improve production efficiency.
Description
Technical field
The present invention relates to technical field of plastic, a kind of specifically larger caliber seamless helical corrugation mesolow composite tube for conveying road and forming method.
Background technique
The pipeline that is used for the mesolow conveying at present mainly contains plastic tube, steel and the compound composite metal plastic pipe of plastics that pure plastics are raw material except that traditional steel pipe.Many heavy caliber fluid-transporting tubings mainly adopt steel pipe, but its weight is big, and construction technical requirement is high, easily fed sheet of a media is polluted, and adds that its anti-corrosive properties are poor, and the working life of whole pipeline is shorter, and its cost is also higher.Plastic tube is compared with cement pipe with traditional metal tube, has lightweight characteristics, generally is merely the 1/6-1/10 of metal tube; Corrosion resistance is preferably arranged, and shock resistance and tensile strength are high, the plastic tube internal surface than cast iron tube smooth many, friction factor is little, fluid resistance is little, can reduce the water delivery energy consumption more than 5%; Synthesis energy saving is good; Convenient transportation is installed simply, reaches 30-50 working life.But plastic pipe must have certain wall thickness; To satisfy the requirement of its intensity and ring stiffness; The material that consumes on (like diameter greater than 800mm) its unit length when bore is big is also many; Along with bore increases, though satisfied the requirement of its opposing internal pressure, the ability of its opposing pressure outside can not meet the demands in addition.As reach simultaneously and satisfy the external and internal pressure requirement, its wall thickness then significantly increases, and manufacture cost can increase greatly, is difficult to accepted by people.
Many shortcomings such as composite metal plastic pipe that rose in nearly ten years such as SRPE etc. preferably resolve the withstand voltage not corrosion resistant of metallic conduit, the nonmetal pipeline corrosion resistant is not withstand voltage; Have rigidity and intensity preferably, but diameter 800mm can only be provided the product of following specification., application number relates to a kind of conduit pipe in being 201110204891.9 patent application; Its production method is in spiral twines the compound outer tube of enhancing that forms, to inlay the reinforcing fiber layer and the tubing of moulding; Because the liner reinforced layer is spliced by the ring-type enhancement layer that certain-length is arranged; Splicing seams adopts flame heating welding, hot blast heat welded and extrudes the mode of welding, and inwall is imperfect, rough, and the inwall resistance is big during fed sheet of a media; And the weld seam manufacturing process is harsh, and fed sheet of a media very easily leaks through weld seam.
Summary of the invention
In order to overcome deficiency above-mentioned in the existing technology; The present invention provides a kind of seamless helical corrugation mesolow composite tube for conveying road and forming method; This multiple tube have save that material, inner wall smooth, anti-corrosive properties are good, intensity and the high characteristics of ring stiffness; And this forming method can once moulding on a production line, and manufacturing efficiency is high.
Technological scheme of the present invention is: a kind of seamless helical corrugation mesolow composite tube for conveying road; Comprise the core pipe; Described core pipe outside is wound with enhancement layer, polyethylene layer successively, and the polyethylene layer outside is wound with the plastic-coated steel belt layer, and plastic-coated steel belt layer external packets is covered with composite bed.
Described core Guan Weichun moulds pipe.
Described enhancement layer material is a kind of in high density polyethylene (HDPE), polypropylene, PVC, the nylon, and perhaps any two kinds of materials in the above-mentioned material twine with from the inside to the outside order successively.
The vertical sectional shape of described plastic-coated steel belt layer is T shape, Ω shape or rectangle.
The forming method in seamless helical corrugation mesolow composite tube for conveying road, in may further comprise the steps:
A, twine enhancement layer through the enhancement layer extruder head to the core tube-surface, when twining, the core tube-surface of enhancement layer front end to be wound is used the hot-air system preheating;
B, be wrapped on the enhancement layer 2 by polyethylene layer extruder head polyethylene extrusion layer;
C, the cross section of plastic-coated steel belt layer is bent to a kind of in T type or the Ω shape, be pressed in the polyethylene layer surface then by the steel band bending apparatus;
D, extrude composite bed by the composite bed extruder head and be coated on the plastic-coated steel strip surface;
E, when above-mentioned each step is carried out, the core pipe rotates around central shaft, and the core pipe moves along axial direction with the pipeline supporting frame.
Enhancement layer described in the step a is two-layer, strengthens an enhancement layer extruder head at first layer enhancement layer outer surface, and two enhancement layer extruder heads one core tube-surface are in the same way extruded enhancement layer.
The present invention has following beneficial effect: owing to take such scheme; On in type core pipe, twine enhancement layer and other composite bed; The inner-walls of duct of producing has guaranteed the characteristics that the plastic tube internal surface is smooth, friction factor is little, fluid resistance is little, and inwall is complete one, eliminated from inwall leak fed sheet of a media maybe; Inner-wall material is a pure material, and anti-corrosive properties are good; The core pipe coats the strength problem that has promptly solved pipeline behind other layer, also because to have twined sectional shape be intensity and the ring stiffness enhancing that the steel band of T shape or Ω shape makes this multiple tube.And because intensity and ring stiffness can guarantee, it is very thick to make the wall thickness of this composite pipe to process, and has saved material, also can manufacture the multiple tube of larger caliber as required according to the specification of core pipe.
Description of drawings
Fig. 1 is the structural representation of multiple tube among the present invention;
Fig. 2 is the partial enlarged drawing among Fig. 1;
Fig. 3 is the structural representation of forming unit among the present invention;
Fig. 4 is the right elevation of Fig. 3.
1-core pipe among the figure, 2-enhancement layer, 3-polyethylene layer, 4-plastic-coated steel belt layer; The 5-composite bed, 6-pipeline supporting frame, 7-core pipe supporting frame, 8-hot-air system; 9-pipeline rotating driving device, 10-moves axially platform, the 11-forming frame; 12-steel band bending apparatus 13-enhancement layer extruder head, 14-polyethylene layer extruder head, 15-composite bed extruder head.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
By Fig. 1 and shown in Figure 2, a kind of seamless helical corrugation mesolow composite tube for conveying road comprises core pipe 1, and described core pipe 1 is the pure pipe of moulding, and the material of core pipe 1 can be a kind of in high density polyethylene (HDPE) (PE), polypropylene (PP), the PVC (PVC).Core pipe 1 outside is wound with enhancement layer 2, polyethylene layer 3 successively; Described enhancement layer 2 materials are a kind of in high density polyethylene (HDPE), polypropylene, PVC, the nylon; Perhaps any two kinds of materials in the above-mentioned material twine with from the inside to the outside order successively, and enhancement layer 2 can twine one deck, two-layer even multilayer according to the pressure of the required conveying of pipeline.Polyethylene layer 3 outsides are wound with plastic-coated steel belt layer 4, and the vertical sectional shape along axial direction of described plastic-coated steel belt layer 4 is T shape, Ω shape or rectangle, can strengthen the intensity of pipeline like this.Plastic-coated steel belt layer 4 external packets are covered with composite bed 5, and composite bed 5 can play the corrosion-resistant effect.
By Fig. 3 and shown in Figure 4; Described core pipe 1 is supported on the pipeline supporting frame 6; Pipeline supporting frame 6 tops are fixed with core pipe supporting frame 7 and pipeline rotating driving device 9, drive core pipe supporting frame 7 through pipeline rotating driving device 9 and drive core pipe 1 by fixed angular speed rotation.Pipeline supporting frame 6 is fixed on the pipeline shaping axle on mobile platform 10, and the pipeline shaping axle drives on the pipeline supporting frame 6 to mobile platform 10 and on forming frame 11, moves vertically, thereby core pipe 1 can be moved in rotation vertically.
The forming method in seamless helical corrugation mesolow composite tube for conveying road may further comprise the steps:
A, twine enhancement layer 2 to core pipe 1 surface through enhancement layer extruder head 13; When twining; Core pipe 1 surface of enhancement layer 2 front ends to be wound with hot-air system 8 be preheated to can well be bonding with enhancement layer 2 degree so that enhancement layer 2 is complete and core pipe 1 is bonded as one.Described enhancement layer 2 also can be two-layer or multilayer, only needs to strengthen one or more enhancement layer extruder heads 13 at first layer enhancement layer 2 outer surfaces, and several enhancement layer extruder heads 13 1 are extruded enhancement layer 2 in core pipe 1 surface in the same way.
B, be wrapped on the enhancement layer 2 by polyethylene layer extruder head 14 polyethylene extrusion layers 3;
C, the cross section of plastic-coated steel belt layer 4 is bent to a kind of in T type or the Ω shape, be pressed in polyethylene layer 3 surfaces then by steel band bending apparatus 12;
D, extrude composite bed 5 by composite bed extruder head 15 and be coated on plastic-coated steel band 4 surfaces;
E, when above-mentioned each step is carried out, core pipe 1 rotates around central shaft, and core pipe 1 moves along axial direction with pipeline supporting frame 6.
Other composite beds of core pipe 1 and core pipe 1 outer surface can be cut to the fixed length pipe after accomplishing continuously on the production line; Promptly when twining; Each layer can twine according to winding layer from inside to outside successively, and after whole core pipe 1 moved completion, all winding layers also twined completion like this.Also can be compound with other layers again after the independent completion of core pipe 1 and other composite beds of core pipe 1 outer surface or adjacent layer one deck or which floor continuous the production.
More than each layer can add water cooling as required when twining; Twine cooling back, the seamless helical corrugation mesolow composite tube for conveying of completion road the shaping processing is carried out at its two ends; This product can be that the core pipe is isometrical, also can pipeline be processed bellmouth for one section, and an end is processed socket.Owing to adopted pure steel belt layer 4 and other protective layer that core pipe 1 outer surface twines enhancement layer 2, increases ring stiffness of moulding, can manufacture the seamless helical corrugation mesolow of larger caliber composite tube for conveying road as required according to pure specification of moulding core pipe 1.And adopt this method to process seamless helical corrugation mesolow composite tube for conveying road, all process steps can be accomplished on a production line continuously, and production effect is high.
Claims (9)
1. seamless helical corrugation mesolow composite tube for conveying road; Comprise core pipe (1); It is characterized in that: described core pipe (1) outside is wound with enhancement layer (2), polyethylene layer (3) successively; Polyethylene layer (3) outside is wound with plastic-coated steel belt layer (4), and plastic-coated steel belt layer (4) external packets is covered with composite bed (5).
2. seamless helical corrugation mesolow composite tube for conveying according to claim 1 road, it is characterized in that: described core pipe (1) is the pure pipe of moulding.
3. seamless helical corrugation mesolow composite tube for conveying according to claim 2 road is characterized in that: described enhancement layer (2) material is a kind of in high density polyethylene (HDPE), polypropylene, PVC, the nylon.
4. seamless helical corrugation mesolow composite tube for conveying according to claim 2 road is characterized in that: described enhancement layer (2) material is that any two kinds of materials in high density polyethylene (HDPE), polypropylene, PVC, the nylon twine with from the inside to the outside order successively.
5. according to claim 3 or 4 described seamless helical corrugation mesolow composite tube for conveying roads, it is characterized in that: the cross section switch of described plastic-coated steel belt layer (4) is a T shape.
6. according to claim 3 or 4 described seamless helical corrugation mesolow composite tube for conveying roads, it is characterized in that: the vertical sectional shape of described plastic-coated steel belt layer (4) is a Ω shape.
7. according to claim 3 or 4 described seamless helical corrugation mesolow composite tube for conveying roads, it is characterized in that: the vertical sectional shape of described plastic-coated steel belt layer (4) is a rectangle.
8. the forming method in seamless helical corrugation mesolow composite tube for conveying according to claim 1 road is characterized in that may further comprise the steps:
A, twine enhancement layer (2) through enhancement layer extruder head (13) to core pipe (1) surface, when twining, the core pipe (1) of enhancement layer to be wound (2) front end surface is with hot-air system (8) preheating;
B, be wrapped on the enhancement layer (2) by polyethylene layer extruder head (14) polyethylene extrusion layer (3);
C, the cross section of plastic-coated steel belt layer (4) is bent to a kind of in T type or the Ω shape, be pressed in polyethylene layer (3) surface then by steel band bending apparatus (12);
D, extrude composite bed (5) by composite bed extruder head (15) and be coated on plastic-coated steel band (4) surface;
E, when above-mentioned each step is carried out, core pipe (1) rotates around central shaft, and core pipe (1) moves along axial direction with pipeline supporting frame (6).
9. the forming method in seamless helical corrugation mesolow composite tube for conveying according to claim 8 road; It is characterized in that: the enhancement layer described in the step a (2) is for two-layer; Strengthen an enhancement layer extruder head (13) at first layer enhancement layer (2) outer surface, two enhancement layer extruder heads (13) are extruded enhancement layer (2) in core pipe (1) surface in the same way.
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Cited By (7)
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| CN103322340A (en) * | 2013-05-30 | 2013-09-25 | 天津业和科技有限公司 | Double-layer co-extrusion polyethylene winding structural wall pipe and production method and equipment thereof |
| CN105443878A (en) * | 2015-12-31 | 2016-03-30 | 广西钦州国通管业有限公司 | Polyethylene steel strip reinforced corrugated pipe |
| CN106481901A (en) * | 2016-12-07 | 2017-03-08 | 鹤山联塑实业发展有限公司 | A kind of enhancing carat pipe and its manufacture method |
| CN109630766A (en) * | 2019-02-20 | 2019-04-16 | 江苏嘉恒管业科技发展有限公司 | A kind of internal-rib enhancing helical bellows and preparation method thereof |
| CN110566757A (en) * | 2019-09-30 | 2019-12-13 | 佛山环葆嘉智能装备有限公司 | Composite pipe and method for producing the same |
| CN113063042A (en) * | 2021-04-12 | 2021-07-02 | 上海英泰塑胶股份有限公司 | Continuous fiber preimpregnation sheet core layer winding reinforcing composite pipeline system |
| CN114849970A (en) * | 2022-04-07 | 2022-08-05 | 南京联众工程技术有限公司 | Anti-corrosion slurry inlet device for threaded steel pipe seaming connection part and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103322340A (en) * | 2013-05-30 | 2013-09-25 | 天津业和科技有限公司 | Double-layer co-extrusion polyethylene winding structural wall pipe and production method and equipment thereof |
| CN103322340B (en) * | 2013-05-30 | 2015-12-09 | 天津业和科技有限公司 | Double-layer coextrusion polyethylene spirally enwound structure-wall tubular product and production method thereof and manufacturing mechanism |
| CN105443878A (en) * | 2015-12-31 | 2016-03-30 | 广西钦州国通管业有限公司 | Polyethylene steel strip reinforced corrugated pipe |
| CN106481901A (en) * | 2016-12-07 | 2017-03-08 | 鹤山联塑实业发展有限公司 | A kind of enhancing carat pipe and its manufacture method |
| CN109630766A (en) * | 2019-02-20 | 2019-04-16 | 江苏嘉恒管业科技发展有限公司 | A kind of internal-rib enhancing helical bellows and preparation method thereof |
| CN110566757A (en) * | 2019-09-30 | 2019-12-13 | 佛山环葆嘉智能装备有限公司 | Composite pipe and method for producing the same |
| CN110566757B (en) * | 2019-09-30 | 2024-08-27 | 佛山环葆嘉智能装备有限公司 | Composite pipe and production method thereof |
| CN113063042A (en) * | 2021-04-12 | 2021-07-02 | 上海英泰塑胶股份有限公司 | Continuous fiber preimpregnation sheet core layer winding reinforcing composite pipeline system |
| CN114849970A (en) * | 2022-04-07 | 2022-08-05 | 南京联众工程技术有限公司 | Anti-corrosion slurry inlet device for threaded steel pipe seaming connection part and use method thereof |
| CN114849970B (en) * | 2022-04-07 | 2024-04-12 | 南京联众工程技术有限公司 | Corrosion-resistant slurry feeding device for seaming joint of threaded steel pipe and use method of corrosion-resistant slurry feeding device |
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