CN2514201Y

CN2514201Y - Special plastic-steel skeleton screw composite pipe

Info

Publication number: CN2514201Y
Application number: CN 01261529
Authority: CN
Inventors: 王金桥; 王振国
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-06
Filing date: 2001-09-06
Publication date: 2002-10-02
Anticipated expiration: 2011-09-06

Abstract

A specialized plastic steel-reinforced spiral composite pipe relates to a pipeline conveying fluids, such as gas, liquid, slurry, paste, etc., in projects, such as oil fields, mines, metallurgy, chemical industry, city construction, etc. An inner wall plastic coating is used as an erosion-proof layer (1), a dedicated steel band spiral buckling hanger is used as a framework layer (2), an outer wall plastic coating is used as a layer (3) composed by multiple layers. The utility model ensures that a plastic steel thread-woven composite pipe has the advantages of erosion resistance, scale resistance, low thermal conductivity, small density, flexibility, etc., and resolves the problem that the plastic steel thread woven composite pipe cannot bear high pressure.

Description

Special plastic-steel murices revolves composite pipe

One, technical field

The utility model relates to a kind of pipeline, specifically the conveying pipeline of the gas of engineerings such as oil field, mine, metallurgy, chemical industry, urban construction, liquid, slurry, lotion etc.

Two, background technique

At home and abroad in the conveyance conduit product scope, what generally adopt is seamless steel pipe and seamed steel pipe, and it connects general electric welding and the molten technology of electric heating of adopting, and pipe fitting joint is cast iron flange or machined steel flange.There is following defective in above technology: 1, whole Structural Hardwares are very easily corroded pipeline, and only be one to two year working life; 2, self-lubricating property is poor, and easily fouling, easy wax deposition cause the regular obstruction of pipeline; 3, thermal conductivity is big, the heat loss rate height; 4, than great, inflexibility, install dumb, and long in time limit, labor intensity is big; 5, the flange-type interface causes the run, drip, leak phenomenon easily, and is inconvenient to install; 6, can't solve the external pressure problem.Based on the above problem that metallic conduit exists, our company successfully developed " plastics steel wire establishment composite pipe " in 1994, and the patent No. is ZL.94243519.2.Perishable, the easy fouling, thermal conductivity that this product has overcome metallic conduit substantially be big, than problems such as great and inflexibility, but because of insufficient strength, in can only being applied in, environment under low pressure.

Three, summary of the invention

The object of the invention mainly is to have that plastics steel wire establishment composite pipe is corrosion-resistant, less scaling, thermal conductivity is little, proportion is little and advantage such as flexible in order to provide a kind of, solved the multiple tube that plastics steel wire establishment composite pipe can not bear high pressure simultaneously.

Take following technological scheme for reaching above-mentioned purpose: the inwall plastic-coated is as anticorrosive coat 1, and the special steel strip turn-bucklet is hung as framework layer 2, and the outer wall plastic-coated is as layer 3.

Above-mentioned special plastic-steel murices revolves composite pipe, and layer 3 is done separation layer, and there is enhancement layer 4 layer 3 outside, and layer 4 outside have layer 5 to do protective layer;

Above-mentioned special plastic-steel murices revolves composite pipe layer 3 outside enhancement layer 4, and layer 4 outside have layer 5 to do separation layer, and there is enhancement layer 6 layer 5 outside, and there is layer 7 layer 6 outside, and layer 7 is done protective layer.

Above-mentioned special plastic-steel murices revolves composite pipe, in layer 3 outside enhancement layer 4 is arranged, and layer 4 outside have layer 5 to do separation layer, and there is enhancement layer 6 layer 5 outside, and there is layer 7 layer 6 outside, and layer 7 is done separation layer, adopts band steel as stretch-resisting layer 8, and there are layer 9 protective layer layer 8 outside.

Above-mentioned special plastic-steel murices revolves composite pipe; in layer 3 outside enhancement layer 4 is arranged; layer 4 outside have layer 5 to do separation layer; there is enhancement layer 6 layer 5 outside, and there is layer 7 layer 6 outside, and layer 7 is done separation layer; adopt band steel as stretch-resisting layer 8; there are layer 9 separation layer layer 8 outside, with rubber, plastics or polyurethane foaming as thermal insulation layer 10, with plastics, rubber or stainless steel belt as protective layer 11

Above-mentioned special plastic-steel murices revolves composite pipe, and enhancement layer is selected steel wire or Steel cord for use; Separation layer is selected plastics or adhesive for use; Thermal insulation layer is selected rubber, plastics or polyurethane foaming for use; Protective layer is selected plastics, rubber or stainless steel belt for use.

Inner wall anti-corrosive layer 1 is selected PVC, EVA, SBS, rubber, PA, PE, PP, PPR, PUR, unsaturated polyester resin, epoxy resin, glass fibre reinforced plastics for use.

The inside and outside wall of pipeline is PE or PPR, solves the most serious etching problem of pipeline harm, and its life-span can reach 50 years; The self-lubricating property of PE or PPR material obviously is better than metallic material, makes less scaling, the wax deposition of pipeline, stops the line clogging problem that therefore causes substantially; Multi-layer combined structure effectively reduces thermal conductivity, reduces heat loss rate; Weight only is 1/2～1/3 of conventional steel, simple installation, and labor intensity is little; Particular structure allows it crooked arbitrarily in scope of design, and can adapt to corresponding negative pressure (external pressure).

Four, description of drawings

Fig. 1 is a kind of embodiment's of the utility model an axial sectional view

Five, embodiment

Fig. 1 is a kind of of the utility model embodiment.The 1st, anticorrosive coat, the 2nd, framework layer, layer 3 is separation layers, and layer 4 is enhancement layers, and layer 5 is separation layers, and layer 6 is enhancement layers, and layer 7 is separation layers, and layer 8 is stretch-resisting layers, and layer 9 is separation layers, and layer 10 is thermal insulation layers, and layer 11 is protective layers.Anticorrosive coat 1 is arranged on the first layer of inner-walls of duct; the upper strata of anticorrosive coat 1 is a framework layer 2; framework layer 2 upper stratas are separation layers 3, are enhancement layer 4, separation layer 5, enhancement layer 6, separation layer 7, stretch-resisting layer 8, separation layer 9, thermal insulation layer 10 more successively, and outermost surface is a protective layer 11.The 12nd, the internal layer connecting tube of pipe joint, the 13rd, lock sleeve, the 14th, tension link.

(1) making step: a, the cold rolling button of steel band are hung forming tank and are done framework layer 2, use special-purpose machinery to make; B, hang in the forming process with button hanging groove turn-bucklet at steel band, plastic extruder wall synchronous coated macromolecule PE or PPR is within it done anticorrosive coat 1; C, in type helical steel band outer wall plastic-coated, as separation layer 3; Press predetermined angle and density winding with steel wire outside d, the separation layer 3, as enhancement layer 4; E, enhancement layer 4 outer plastic-coateds again are as separation layer 5; F, according to the pressure requirement, can add one deck enhancement layer 6 and separation layer 7 again; G, the separation layer 7 outer band steels that twine are made stretch-resisting layer 8; H, stretch-resisting layer 8 plastic-coated are again made separation layer 9; I, according to different operation operating modes, adopt rubber, plastics or polyurethane foaming as thermal insulation layer 10; J, thermal insulation layer 10 outer with materials such as plastics, rubber or stainless steels as protective layer 11.

(2) pressure rating is divided

The product pressing force is divided into Three Estate:

1, low-voltage tube: 0.1MPa≤P＜1.6MPa

2, middle pressure pipe: 1.6MPa≤P＜10MPa

3, high-voltage tube: 10MPa≤P＜32MPa

The final compound number of plies of product depends on that user's pressure requires, bore requires and is incubated many-sided factors such as requirement that the compound number of plies of above-mentioned basic, normal, high pressure pipe can be by three layers to multilayer.

(3) material is divided

According to the difference of operation operating mode, each of product layer material can take the circumstances into consideration to select for use:

1, inwall: soft body comprises PVC, EVA, SBS, rubber etc.;

The semihard plastid comprises PA, PE, PP, PPR, PUR etc.;

Duromer comprises unsaturated polyester resin, epoxy resin, glass fibre reinforced plastics etc.

2, enhancement layer: comprise steel wire or Steel cord,

3, stretch-resisting layer: based on band steel, select the low-carbon (LC) steel or stainless steel for use,

4, separation layer: the plastics of various different performances or adhesive,

5, thermal insulation layer: adopt rubber, plastics or polyurethane foaming as thermal insulation layer,

6, protective layer: materials such as plastics, rubber, stainless steel belt.

Claims

1, a kind of special plastic-steel murices revolves composite pipe, it is characterized in that: the inwall plastic-coated is as anticorrosive coat (1), and the special steel strip turn-bucklet is hung as framework layer (2), and the outer wall plastic-coated is as layer (3).

2, special plastic-steel murices according to claim 1 revolves composite pipe, it is characterized in that: inner wall anti-corrosive layer (1) is selected PVC, EVA, SBS, rubber, PA, PE, PP, PPR, PUR, unsaturated polyester resin, epoxy resin or glass fibre reinforced plastics for use.

3, special plastic-steel murices according to claim 1 revolves composite pipe, it is characterized in that: layer (3) is done separation layer, and there is enhancement layer (4) layer (3) outside, and layer (4) outside has layer (5) to do protective layer;

4, special plastic-steel murices according to claim 1 revolves composite pipe; it is characterized in that: in layer (3) outside enhancement layer (4) is arranged, layer (4) outside has layer (5) to do separation layer, and there is enhancement layer (6) layer (5) outside; there is layer (7) layer (6) outside, and layer (7) is done protective layer.

5, special plastic-steel murices according to claim 1 revolves composite pipe; it is characterized in that: enhancement layer (4) is arranged in layer (3) outside; layer (4) outside has layer (5) to do separation layer; there is enhancement layer (6) layer (5) outside; there is layer (7) layer (6) outside; layer (7) is done separation layer, adopts band steel as stretch-resisting layer (8), and there is layer (9) protective layer layer (8) outside.

6, special plastic-steel murices according to claim 1 revolves composite pipe; it is characterized in that: enhancement layer (4) is arranged in layer (3) outside; layer (4) outside has layer (5) to do separation layer; there is enhancement layer (6) layer (5) outside, and there is layer (7) layer (6) outside, and layer (7) is done separation layer; adopt band steel as stretch-resisting layer (8); there is layer (a 9) separation layer layer (8) outside, with rubber, plastics or polyurethane foaming as thermal insulation layer (10), with plastics, rubber or stainless steel belt as protective layer (11)

7, special plastic-steel murices according to claim 6 revolves composite pipe, and it is characterized in that: enhancement layer is selected steel wire or Steel cord for use; Stretch-resisting layer is selected band steel for use; Separation layer is selected plastics or adhesive for use; Thermal insulation layer is selected rubber, plastics or polyurethane foaming for use; Protective layer is selected plastics, rubber or stainless steel belt material for use.