CN2439585Y

CN2439585Y - Metallic spiral woven net and plastic composite tube

Info

Publication number: CN2439585Y
Application number: CN 00235210
Authority: CN
Inventors: 赖秀聪
Original assignee: NANFANG GUOXIN EQUIPMENT Manufacturing Co Ltd WENZHOU
Current assignee: NANFANG GUOXIN EQUIPMENT Manufacturing Co Ltd WENZHOU
Priority date: 2000-05-21
Filing date: 2000-05-21
Publication date: 2001-07-18
Anticipated expiration: 2010-05-21

Abstract

The utility model relates to an engineering pipeline, particularly a metal spiral woven net plastic composite pipe, and the aim is to solve the problem that the engineering pipeline has strong corrosion-proof rigidity. The utility model is characterized in that the utility model has an outer layer plastic pipe and an inner layer plastic pipe, a middle layer is a metal spiral woven net, woven cross points are connected by welding, the three layers are compounded into integration, and then the metal spiral woven net plastic composite pipe is formed. The utility model has the advantages of favorable mechanical performance, good fluid mechanics property, double-face corrosion prevention, good thermal insulation, light weight, convenient transportation and installation, non delamination, corrosion resistance, good pressure resistance, high flexibility, long service life, etc. Meanwhile, the pipes can be produced automatically and continuously, and the metal spiral woven net plastic composite pipe can be widely used in the fields of residential building, engineering construction, petroleum, chemical engineering, natural gas and water supply and drainage of cities.

Description

Metal spiral mesh grid plastic composite pipe

The utility model relates to engineering pipeline, particularly can be widely used in the metal spiral mesh grid plastic composite pipe in residential housing, engineering construction, oil, chemical industry, rock gas, urban water supply and sewerage field.

Plastic composition pipeline in the past, it is the metal frame layer that the mesosphere is arranged between its outer layer plastic tube and the inner layer plastic tube, the compound connection of three layers of pipe.What this metal frame layer adopted is that metal perforated plate is rolled into pipe, be enclosed within the inner plastic tube outside after the seam crossing welding, the internal and external layer plastics are integral by the hole shape on the metal perforated plate, and plastics and metal contain in tube wall mutually, can avoid separating and peeling off of plastics and metal.But metal perforated plate need be made on sheet metal in punching, and it is cylindric also to need special sheet bending machine to be processed into, the size in hole, what and distribution situation, must adapt to the different pressures class requirement, therefore need scribe many punching dies and satisfy the production needs, increase many equipment, the time-consuming cost height of taking a lot of work.And can only single piece production, can not realize the production automation.

The purpose of this utility model provides metal spiral mesh grid plastic composite pipe, has both reached to adapt to the different pressures class requirement, reduces cost again, also can produce continuously automatically.

The technical solution of the utility model is that the metal frame layer in the middle of the plastic composite pipe is adopted the metal spiral mesh grid, and the braiding point of intersection is welded to connect, and makes metal spiral mesh grid plastic composite pipe.

Said metal spiral mesh grid is two steel bands or two steel wires or a steel band and a steel wire, the rhombus square grid of making along contrary weaving to direction and radial direction along tubular axis.

Said metal spiral mesh grid is the mesh grid that 4-12 bar steel band or steel wire twine along the inner layer plastic tube axial screw.

Said metal spiral mesh grid 1 steel band point of intersection that to be 4 steel bands twining along the axial right-hand screw of inner layer plastic tube twine with left hand screw thereon is welded to connect.

Said metal spiral mesh grid is 4 steel bands twining along the inner layer plastic tube axial screw and axially be welded to connect equally distributed 4 steel band point of intersection along the inner plastic tube-surface.

The utility model has the advantages that owing to adopt existing steel band in market or steel wire to carry out spiral and twine the metal frame layer that weaves in the middle of forming, make the forming process of plastic composite pipe can automatic continuous production, minimizing equipment reduces cost simultaneously, improves work efficiency and the quality that improves composite pipe again greatly.

Further describe embodiment below in conjunction with accompanying drawing.

Fig. 1 is the utility model embodiment 1 a radial view.

Fig. 2 is the right elevation of Fig. 1.

Fig. 3 is the utility model embodiment 2 a radial view.

Fig. 4 is the right elevation of Fig. 3.

Fig. 5 is the utility model embodiment 3 a radial view.

Fig. 6 is the right elevation of Fig. 5.

Fig. 7 is the utility model embodiment 4 a radial view.

Fig. 8 is the right elevation of Fig. 7.

With reference to Fig. 1～Fig. 2, the utility model is by outer layer plastic tube (1), inner layer plastic tube (2) and intermediate metal framework layer (3), three layers of compound connection.Metal frame layer (3) is changed into the cylinder that replaces original metal perforated plate to be rolled into the metal spiral mesh grid.Metal spiral mesh grid overcrossing point is welded to connect.With two steel bands or two steel wires or a steel band and a steel wire, the rhombus square grid of making along contrary weaving to direction and radial direction along tubular axis.The as can be seen from Figure 2 distribution of metal spiral mesh grid on the composite pipe axial view.

With reference to Fig. 3, Fig. 4, among Fig. 3 the composite pipe made from the mesh grid that 4 steel bands or steel wire twine along inner layer plastic tube (2) axial screw.Show on Fig. 4 that steel band is 4.

With reference to Fig. 5, Fig. 6, Fig. 5 is that 4 helical steel bands (5) are welded to connect formation mesh grid metal frame (3) along inner layer plastic tube (2) 1 enhancement mode helical steel band point of intersection that axially right-hand screw twines and left hand screw twines on it, is combined into plastic composite pipe with outer layer plastic tube (1), inner layer plastic tube (2) again.Find out on Fig. 64 helical steel bands (5) and 1 enhancement mode helical steel band (6) tubular axle combined to distribution situation.

With reference to Fig. 7, Fig. 8, Fig. 7 is that 4 helical steel bands (5) twine and the mesh grid that is welded to connect formation along equally distributed 4 axial steel bands (7) point of intersection, inner layer plastic tube (2) surface along inner layer plastic tube (2) axial screw, is combined into plastic composite pipe with outer layer plastic tube (1), inner layer plastic tube (2) again.Find out the distribution situation of 4 helical steel bands (5) and 4 axial steel bands (7) on Fig. 8.

Steel band and steel band or steel band and steel wire or steel wire and the braiding of steel wire combined helical are adopted in above mesh grid, can overcome the dead angle that plastics enter like this, improve combined strength bination and reliability.Same steel band is the lift angle spiral and twines (left-handed or dextrorotation all can), and steel wire (two or four can) be that straight line intersects with steel band, obtains overlapping point and is welded to connect the effect of also playing typing, increase rigidity and joining together.

The utility model is owing to be compounded in the plastics the inside fully with the net metal skeleton, therefore make composite pipe not only corrosion-resistant but also strengthen the intensity and the rigidity of tubing, the more important thing is and adopt spiral to twine braiding, can utilize special device automation processing and be connected production, improve the production work efficiency greatly.This plastic composite pipe good mechanical property, hydrodynamic characteristic good, two-sided anticorrosion, adiabaticity good, in light weightly be convenient to transportation and reach 50 years with installation, not delamination, working life, and change steel wire diameter or thickness of strips and density, can increase and decrease pressure coefficient; Change the kind of matrix plastic, can satisfy different heatproof corrosion resistant requirements.

Claims

1, metal spiral mesh grid plastic composite pipe, this pipe has outer layer plastic tube (1) and inner layer plastic tube (2), and the mesosphere is metal frame layer (3), three layers of compound connection, it is characterized in that said metal frame layer (3) is the metal spiral mesh grid, the braiding point of intersection is welded to connect.

2,, it is characterized in that said metal spiral mesh grid is two steel bands or two steel wires or a steel band and a steel wire, the rhombus square grid of making along contrary weaving to direction and radial direction along tubular axis according to the said plastic composite pipe of claim 1.

3,, it is characterized in that said metal spiral mesh grid is the mesh grid that 4-12 bar steel band or steel wire twine along inner layer plastic tube (2) axial screw according to claim 1 or 2 said plastic composite pipes.

4, according to claim 1 or 2 said plastic composite pipes, it is characterized in that said metal spiral mesh grid be along inner layer plastic tube (2) axially 4 steel bands twining of right-hand screw be welded to connect with 1 steel band point of intersection that left hand screw thereon twines.

5,, it is characterized in that said metal spiral mesh grid is 4 steel bands twining along inner layer plastic tube (2) axial screw and axially be welded to connect equally distributed 4 steel band point of intersection along inner layer plastic tube (2) surface according to claim 1 or 2 said plastic composite pipes.