CN201836553U

CN201836553U - Steel-plastic composite wound pipe with arc-shaped steel strip

Info

Publication number: CN201836553U
Application number: CN2010205982348U
Authority: CN
Inventors: 黄文武
Original assignee: SHANGHAI JIUTONG PLASTIC PRODUCT CO Ltd
Current assignee: SHANGHAI JIUTONG PLASTIC PRODUCT CO Ltd
Priority date: 2010-11-09
Filing date: 2010-11-09
Publication date: 2011-05-18
Anticipated expiration: 2020-11-09

Abstract

A steel-plastic composite wound pipe with an arc-shaped steel strip structurally comprises a pipe blank, a pipe strip and a covering wall. The steel-plastic composite wound pipe is characterized in that the covering wall is arranged outside the pipe blank, the pipe strip and a structure integrated by spaced winding and hot melting are fixed between the pipe blank and the covering wall. Existing shortcomings are overcome, and formed pipeline stress points are more scattered, so that the possibility of damaging a pipe stripping and winding structure of a steel-plastic bonding surface is reduced greatly. As polyethylene of pipelines cannot be damaged, steel and plastic are ensured to be connected firmly together, difficulty in corrosion of the steel strip wrapped by the polyethylene is realized effectively, the strength of the polyethylene wound pipe is kept, the integral structure of the polyethylene wound pipe can be improved under the condition of pipe laying, and the steel-plastic composite wound pipe cannot pollute underground environments when being used for a long period of time. Compared with a double-flat-wall steel-plastic drain pipe, the steel-plastic composite wound pipe has the advantages that metal materials are saved by 50%, and production cost is reduced by more than 40%.

Description

Steel plastic composite wound pipe with the arc steel band

Technical field

The utility model steel plastic composite wound pipe of arc steel band, what relate to is plastic tube design, processing technique field, is applied to underground buried tube.

Background technique

Domestic, plastic tube, especially heavy caliber polyethylene wound pipe material, according to properties of materials as can be known, poly Young's modulus is less, its tubing, especially the ring stiffness of heavy caliber pipe is less relatively, imbeds underground, special in the area that often is subjected to weight, tubing ftractures easily, behind the tubing cracking, because imbed underground, be difficult in time be found, long seepage, ground water will be subjected to pollute even severe contamination, use this type of tubing, be subjected to environmental administration and broad masses' query; The intensity that steel band, reinforcing bar increase heavy caliber pipe is set up in the employing that also has outside entwining tube, though temporarily increased ring stiffness, be embedded in underground after, corrosion very gets rusty easily, soon with regard to the corrosion of invar band, reinforcing bar, and the original intention of losing the increase ring stiffness, moreover, owing to structural reason, comprise with polyethylene behind steel band, the reinforcing bar even at the wall unevenness of cross section, cause the force bearing point of pipeline concentrated relatively, make steel mould junction plane easily and peel off, the structure of wrapped tube is damaged; Have, adopt the structure that is similar to the plastic-aluminum pipe, produce the polyethylene wound pipe material with the method for injection moulding, steel is moulded junction plane and is used in a humid environment, and steel is moulded and peeled off at short notice, and more inadvisable usefulness tends to cause engineering accident; It is antirust to form entwining tube by the thick plastic layer of spraying 0.15-0.25mm on steel band again, because up to standard difficult during pretreatment, or because plastic layer is scratched, often rate of corrosion is faster under the situation of water logging, the steel band that increases does not just have use value as illusory at all.

The model utility content

The purpose of this utility model is to overcome above-mentioned defective, structure to the steel band set up in the polyethylene wound pipe material is reformed, the basic structure that keeps entwining tube reduces the pipeline force bearing point and disperses, and reaches the steel plastic composite wound pipe with the arc steel band that increases considerably polyethylene wound pipe material intensity.Its technology is: the structure that comprises pipe racks, pipe, coating wall, it is characterized in that: pipe is provided with the coating wall outward, be fixed with the pipe racks of half garden shape between pipe and the coating wall, and hot melt all-in-one-piece structure is twined at the interval, the bottom of the pipe racks 3 of half garden shape outwards is provided with, the support of inward direction conflict pipe, and the pipe racks height of half garden shape is equal to or less than half garden shape radius.The positive effect of implementing after this technology is: at first overcome above-mentioned defective, the force bearing point of the pipeline that forms disperses relatively, making steel mould the possibility that junction plane is peeled off, the structure of wrapped tube is damaged greatly reduces, because the polyethylene of pipeline can be not damaged, thereby having guaranteed that steel is moulded securely links together, realize that effectively steel band is difficult to be corroded in the polyethylene parcel, kept polyethylene wound pipe material intensity, can be under the situation of pipe laying the polyethylene wound pipe material integrally-built complete, the long-term use can not pollute underground environment.

Description of drawings

Fig. 1 is a structural representation of the present utility model,

Wherein, 1-pipe, 2-coat wall, 3-pipe racks, 4-support;

Embodiment

Below in conjunction with accompanying drawing the utility model is further described:

See accompanying drawing 1, pipe 1 outer being provided with coats wall 2, is fixed with the pipe racks 3 of half garden shape between pipe 1 and the coating wall 2 and twines hot melt all-in-one-piece structure at interval, and the bottom of the pipe racks 3 of half garden shape is provided with the support 4 conflict pipes 1 of outward direction.

See accompanying drawing 1, at first sheet metal is pressed the spreading width cun shearing slivering of pipe racks 3, the steel band of shearing slivering enters brake and is pressed into the pipe racks 3 that the cross section is a ⌒ shape; Extruder is extruded HDPE pipe 1, through traction, pipe racks 3, pipe 1 enter the extruder main frame from direction separately, after pipe racks 3 enters pipe 1 set coating wall 2 positions, by extruder main frame, spiral winding machine and corresponding slave drive, pipe 1 coats 3, three of pipe racks with coating wall 2 and twines and be fused into one simultaneously, form steel plastic composite wound pipe, again through shaping, typing, cool off, cut into the steel-plastic composite pipe of the specification length of dispatching from the factory.

Claims

1. with the steel plastic composite wound pipe of arc steel band, comprise the structure of pipe racks, pipe, coating wall, it is characterized in that: pipe is provided with the coating wall outward, is fixed with the pipe racks of half garden shape between pipe and the coating wall, and twines hot melt all-in-one-piece structure at interval.

2. the steel plastic composite wound pipe of the trapezoidal steel band of usefulness according to claim 1 is characterized in that: the bottom of the pipe racks of half garden shape (3) outwards is provided with, the support of inward direction conflict pipe.

3. the steel plastic composite wound pipe of the trapezoidal steel band of usefulness according to claim 1 is characterized in that: the pipe racks height of half garden shape is equal to or less than half garden shape radius.