CN2472029Y

CN2472029Y - Plastic composite pipe with steel net sheath

Info

Publication number: CN2472029Y
Application number: CN 00242227
Authority: CN
Inventors: 侯贤忠; 侯欣田; 侯冰冰; 侯可欣
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-06
Filing date: 2000-07-06
Publication date: 2002-01-16
Anticipated expiration: 2010-07-06

Abstract

The utility model relates to a plastic composite tube with steel belt net framework, which belongs to a plastic composite tube. The utility model comprises an inner wall of the plastic tube 2, an outer wall of the plastic tube 3 and a steel belt net framework 1; a steel belt 4 is helically rotated into tube shape and the two ends of the steel belt 4 are welded with a connecting ring 6; a steel belt 5 is arranged at the outside of the steel belt 4 and the intersections are fixed in welding style; the two ends of the steel belt 5 are welded with the connecting ring 6, so as to form the steel belt net framework 1; the steel belt net framework 1 is covered by the inner wall of the plastic tube 2 inside and the outer wall of the plastic tube 3 outside. The utility model has the advantages of decreasing wall thickness of the composite tube, saving steel and raw materials and reducing cost by ten to twenty percents.

Description

Steel band network framework plastic composite pipe

The utility model relates to the application of reinforcing material in the plastic composite pipe pipe, relates in particular to steel band network framework plastic composite pipe, belongs to a kind of in the plastic composite pipe of nonmetal pipeline technology----.

In nonmetal pipeline, plastic tube is because the restriction of its material, make the resistance to compression of plastic tube, counter-bending, performances such as stretch-proof have certain narrow limitation, for improving the intensity of plastic tube, the technological method that adopts is to add reinforcing mesh skeleton and steel plate hole network framework in plastic tube at present, number of patent application is respectively 94209612, name is called that metal frame--plastic composite pipe and application number are 94239887, name is called the high duty metal frame plastic composite pipe, the former is embedded with netted tubular Framework Of Steel Reinforcement in the middle of the plastic tube tube wall, as everyone knows, two reinforcing bar zigzag welds are connected together, and the thickness of its weld is 2 times bar diameter, for the reinforcing bar tube net with this thickness is rolled in the plastic tube wall, certainly will increase the pipe thickness of plastic composite pipe, wasted raw material, and the high duty metal frame plastic composite pipe is to go out on steel plate one by one that Kong Houzai is rolled into tubulose, this has not only wasted steel, also make manufacturing process loaded down with trivial details, cause the increase of product cost.

The purpose of this utility model provides a kind of steel band network framework plastic composite pipe, reduces the pipe thickness of plastic composite pipe, saves steel, reduces product cost.

The technical solution of the utility model is: the steel band network framework is welded by two layers of steel band are staggered, the first layer steel band is center convolution coiled tubulose with the axis, pitch is greater than width of steel band, be welded on the outside of helical steel band with several axial steel bands of parallel axes, axially steel band and helical steel band intersection are connected and fixed with welding method, thereby form the steel band network framework, utilize the plastic pipe moulding process that the steel band network framework is freezed solidly in the plastic tube wall, constitute steel band network framework plastic composite pipe.

Described steel band network framework also can be welded so that opposite sense of rotation is crossing by the central axis of two steel bands around pipeline.

The utility model has the advantages that: (1) can reduce the wall thickness of composite pipe.(2) avoid the steel waste, save raw material, reduce the cost of plastic composite pipe, can fall cost 10-20%.(3) steel band network framework processing and fabricating is realized easily, reduces processing cost.(4) helical steel band bears the suffered radial pressure of plastic composite pipe, the axial tension that axial steel band bears plastic composite pipe.

Above-mentioned advantage can be by calculating proof.For example: external diameter is the reinforcing mesh frame plastic composite pipe of 50mm, and reinforcing bar is φ 4mm, and plastic protective layer is thick to be 2mm, and then the plastic composite pipe wall thickness is 12mm, that is:

4 * 2+2 * 2=12mm, the steel band that is converted into the reinforcing bar homalographic then should be wide * thick=6.28mm * 2mm, this moment, the wall thickness of plastic composite pipe should be 2 * 2+2 * 2=8mm, made the wall thickness of plastic composite pipe reduce 4mm, and this saves the economic benefit that produces is considerable.

Fig. 1 is a steel band network framework composite plastic pipe structural drawing.

Fig. 2 is a steel band network framework structural drawing.

Fig. 3 is the longitudinal section of plastic composite pipe shown in Figure 1

Fig. 4 is the B-B sectional view of steel band skeleton shown in Figure 2

Below in conjunction with Fig. 1, Fig. 2 the utility model is described in detail.

Referring to Fig. 2, the steel band network framework is made up of the tubulose short circuit ring 6 at two ends and the steel band of two layers of staggered welding, first layer steel band 4 is center convolution rotation coiled tubulose with the axis, pitch is greater than width of steel band 1-10mm, the two ends of steel band 4 are welded on respectively on two tubulose short circuit rings 6, distribute vertically with several steel bands 5 of parallel to an axis, steel band 5 is connected and fixed with welding manner with helical steel band 4 jointing places, the two ends of steel band 5 are welded on two tubulose short circuit rings 6, steel band 5 is the interval certain spacing each other, thereby constitutes the steel band network framework 1 that has mesh with steel band 4; Referring to Fig. 1, place steel band network framework 1 in the plastic composite pipe shaping machine set and make steel band network framework 1 be in the tube wall neutral position, utilize the plastic pipe moulding process, make by plastic tube inwall 2, outer wall 3 steel band network framework 1 parcel binding all-in-one-piece steel band network framework plastic composite pipe.

Claims

1, steel band network framework plastic composite pipe, by plastic tube inwall (2), plastic tube outer wall (3), steel band network framework (1) constitutes, it is characterized in that: steel band (4) is center convolution rotation coiled tubulose with the axis, pitch is greater than width of steel band, the two ends of steel band (4) are welded on respectively on two tubulose short circuit rings (6), be distributed in the outside of steel band (4) with several steel bands (5) of parallel to an axis, steel band (5) links fixing with steel band (4) jointing place with welding manner, the two ends of steel band (5) are welded on the short circuit ring (6) at two ends, steel band (5) each interval certain spacing, thus constitute steel band network framework (1); Plastic tube inwall (2), outer wall (3) are with the interior outer wrapping of steel band network framework (1).