CN201103750Y

CN201103750Y - Plastics-steel compound spiral pipe

Info

Publication number: CN201103750Y
Application number: CNU2007200572044U
Authority: CN
Inventors: 江明榆
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-20
Filing date: 2007-09-20
Publication date: 2008-08-20
Anticipated expiration: 2017-09-20

Abstract

The utility model provides a steel-plastic composite spiral tube with a steel tube as the liner and a plastic layer as the outer layer; wherein, the steel tube and the plastic layer are bonded into a whole and winded into the spiral tube by a bonding layer; a section of a peripheral surface of the plastic layer is a rectangle; the plastic layer of neighboring coils of the spiral tube are melted and bonded into a whole and an inner wall surface and an outer wall surface of the spiral tube are both melting slide surfaces. The steel-plastic composite spiral tube is strong in corrosion resistance and pressure bearing ability, can realize the production of large diameter tubular products and has very wide uses in drainage pipes, fluid-transporting pipes, culverts, tunnels and roadway support.

Description

Steel is moulded combined helical pipe

Technical field

The utility model relates to steel-plastic composite pipe equipment, is meant that specifically steel moulds combined helical pipe.

Background technique

Steel-plastic composite pipe is existing in the market to be used.Have a kind of in pipe for steel pipe, outer tube is that the steel of plastic tube is moulded pipe and is mainly used in conveyance fluid, as water, wet goods.Its steel pipe is that the main body of fed sheet of a media and outer field plastic layer are to avoid its corrosion failure to what steel pipe shielded.General this tubing bore is little, less than φ 300mm.PVC or PE plastic spiral coil also are found in market, are mainly used in draining.Its bore is between φ 250～φ 3000 owing to be subjected to the low restriction of plastic materials hardness, and this pipe is subjected to outer bearing capacity lower, has collapse phenomenon to take place in the time of in the ground pipe laying.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provides a kind of steel to mould combined helical pipe, and its corrosion resistance is strong, bearing capacity is strong, applied widely, can realize the production of heavy caliber pipe.

The purpose of this utility model realizes by following proposal: this steel is moulded combined helical pipe, its liner is a steel pipe, skin is a plastic layer, be bonded as one and be wound in volute by adhesive layer between described steel pipe and the plastic layer, it is characterized in that: the cross section of described plastic layer outer circumferential face is a rectangle, the plastic layer of the adjacent bung flange of volute is molten to stick to one, and the inside and outside wall of volute is the smooth surface of melting.

For realizing the utility model better, according to actual needs, the liner that this steel is moulded combined helical pipe is that steel pipe can be a carbon steel tube, also can be with Coating Steel Pipe and other metal tube, as aluminum pipe, Stainless Steel Tube, copper pipe.

Described skin is that plastic layer is thermoplastic high molecular compound or thermosetting polymer compound, as PVC, PE, PP etc.

The caliber that described steel is moulded combined helical pipe is φ 300mm～φ 10000mm, even can be bigger caliber.

After being bonded as one by adhesive layer between above-mentioned steel pipe and the plastic tube, be wound in volute through special device, the production of this volute is to twine when hot shortness's rectangular plastic pipe (also can adopt thermosetting property rectangular plastic pipe after adopting special device) is extruded, thereby, square type pipe solid matter and molten sticking one, it is smooth that the inside and outside wall of volute is melting.According to production tube internal diameter and outer bearing capacity, can design the diameter wall thickness and the outer layer plastic layer thickness of lined steel pipe, thereby can develop the tubing series of various diameters and anti-outer pressure-bearing grade.

The utility model has following advantage and effect with respect to prior art:

(1) this Guan Jing is wound in large-diameter pipe; its inner layer steel pipe makes the outer bearing capacity of large-diameter pipe increase (can according to the diameter and the wall thickness of outer bearing capacity size design inner layer steel pipe) greatly; the energy solid matter be an one between each tubule of volute part and outer field rectangular cross-section thermoplastic makes; again inner layer steel pipe is shielded, avoided steel pipe to be corroded.Therefore, the tubing bore of production can be very big, and bearing capacity is strong, and the smooth resistance of internal layer is little, and water tightness is good.

(2) can design the series helix pipe of producing different tube diameters, different anti-outer pressure-bearing grades according to actual demand, in supporting extremely wide purposes be arranged in waste pipe, fluid delivery tube, culvert, tunnel, tunnel.

(3) this pipe manufacturing mechanism less complex, power is little, can produce at the construction field (site), and the limit produces at the scene, frontier inspection is tested, the limit construction is laid, and can save the very big freight of heavy caliber pipe.

Description of drawings

Fig. 1 is the external structure schematic representation that the utility model steel is moulded combined helical pipe.

Fig. 2 is that A-A shown in Figure 1 is to the cross section structure schematic representation.

Embodiment

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.

Embodiment

As shown in Figure 1, 2, this steel is moulded combined helical pipe, and its liner is an A3 carbon steel tube 1, and diameter is φ 25mm, and wall thickness is 1mm; Skin is a PVC plastic layer 3, the cross section of plastic layer 3 outer circumferential faces is 40 * 40 rectangles, be bonded as one by adhesive 2 between steel pipe 1 and the plastic layer 3, behind the continuous extrusion plastic layer 3 of single spiral shell plastic extruder, promptly this composite pipe solid matter is wound in φ 500 volutes 4 with special device, plastic layer 3 molten the sticking to one of the adjacent bung flange of volute 4, during production, implement heating at the tubing inside and outside wall that twines and make entwining tube inside and outside wall close adhesion like this, thereby make the inside and outside wall of volute 4 be the smooth surface of melting.

Because A3 steel pipe 1 is can produce continuously with the ERW that coiled strip is made, moulding pipe production outward also is to extrude continuously with single spiral shell plastic extruder, and entwining tube length can intercept according to need.Therefore comparatively speaking, the manufacturing mechanism less complex, power is little, can produce at the construction field (site), and the limit produces at the scene, frontier inspection is tested, the limit construction is laid, and can save the very big freight of heavy caliber pipe.

The liner that this steel is moulded combined helical pipe is that steel pipe 1 also can be used Coating Steel Pipe and other metal tube (for example: aluminum pipe, Stainless Steel Tube, copper pipe); Skin is that plastic layer 3 is thermoplastic high molecular compound or thermosetting polymer compound (for example: PVC, PE, PP etc.).The caliber that this steel is moulded combined helical pipe is φ 300mm～φ 10000mm, even can be bigger caliber.

As mentioned above, just can realize the utility model preferably, the foregoing description is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be that all equalizations of being done according to the utility model content change and modification, all contained by the utility model claim scope required for protection.

Claims

1, steel is moulded combined helical pipe, its liner is a steel pipe, skin is a plastic layer, be bonded as one and be wound in volute by adhesive layer between described steel pipe and the plastic layer, it is characterized in that: the cross section of described plastic layer outer circumferential face is a rectangle, the plastic layer of the adjacent bung flange of volute is molten to stick to one, and the inside and outside wall of volute is the smooth surface of melting.

2, mould combined helical pipe according to the described steel of claim 1, it is characterized in that: described steel pipe is carbon steel tube, Coating Steel Pipe, aluminum pipe, Stainless Steel Tube, copper pipe.

3, mould combined helical pipe according to the described steel of claim 1, it is characterized in that: described skin is that plastic layer is thermoplastic high molecular compound or thermosetting polymer compound, comprises PVC, PE, PP.

4, mould combined helical pipe according to the described steel of claim 1, it is characterized in that: the caliber that described steel is moulded combined helical pipe is φ 300mm～φ 10000mm.