CN203686389U

CN203686389U - Large-diameter steel plastic reinforced composite pipe joint

Info

Publication number: CN203686389U
Application number: CN201320794669.3U
Authority: CN
Inventors: 葛介昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-06
Filing date: 2013-12-06
Publication date: 2014-07-02
Anticipated expiration: 2023-12-06

Abstract

The utility model provides a large-diameter steel plastic reinforced composite pipe joint and belongs to the technical field of reinforced composite pipelines. The composite pipe joint comprises a composite pipe and flanges at the two ends of the composite pipe, wherein the central layer of the reinforced composite pipe adopts a spiral-welded steel pipe; a fiber reinforced plastic (FRP) winding layer is arranged on the outer wall of the spiral-welded steel pipe, so as to form an outer layer of the reinforced composite pipe; a silk mesh with hooks and a plastic rotation coating layer are arranged on the inner wall of the spiral-welded steel pipe, so as to form the inner layer of the reinforced composite pipe. The large-diameter and steel plastic reinforced composite pipe section provided by the utility model has an excellent corrosion resistant performance and the properties of light weight and high strength; the reinforced composite pipe section is superior to various pipelines utilized at present in pressure resistance, corrosion resistance, durable years, manufacturing cost and social economic benefits, thereby being an ideal updated substitute product for steel pipes, cement pipes, cast iron pipes, steel cylinder concrete pipes and the like in the prior art.

Description

Large-diameter steel plastic reinforced composite pipe joint

Technical field

The invention belongs to glass fibre reinforced plastic composite pipe technical field, be specifically related to a kind of large-diameter steel plastic reinforced composite pipe joint.

Background technique

At present in the public water supply projects such as large hydraulic engineering, original tap water intake pipe, remote potable water water supply project, municipal drainage house steward and ventilating engineering, what the heavy caliber aqueduct using mainly adopted has steel plate pipe, cast iron tube, cylinder concrete pipe etc., from the behaviour in service of pipes and tubes, steel plate pipe, cast iron tube all need to carry out inner wall anti-corrosive processing, preservative treatment cost has caused tubing cost of production high, it is again the mode that adopts welding that steel plate tube field is installed connection, need to employ special device, increase the complexity of installation process; Although the on-the-spot this relatively simple mode of CONCENTRIC REDUCER socket joint that adopts of installing of cast iron tube, but what it had limited pipe bore from manufacturing process can only be in 3m, and proportion is high, material fragility, there are in actual use a lot of potential safety hazards such as easy-to-rust, leakage; And the heaviness of cylinder concrete pipe is comparison distinct issues, generally, the tube coupling of a joint bore 3m, long 5m weighs 35 tons, all brings very burden to transport, construction, and not corrosion resistant of cement, should not be in acid, the regional application of saline alkali soil.

Summary of the invention

The present invention aims to provide a kind of purport the advantages of Glass Steel Tube, steel pipe, PE plastic tube is saved to technological scheme in one, the complementary large-diameter steel plastic reinforced composite pipe that overcomes single class material conduit weak spot of while, to overcome problems of the prior art.

Described large-diameter steel plastic reinforced composite pipe joint, comprise reinforced composite pipe and be equipped with the flange at reinforced composite pipe two ends, the central core that it is characterized in that reinforced composite pipe is spiral welded steel pipe, the external peripheral surface of spiral welded steel pipe is equipped with the skin of glass reinforced plastic winding layer formation reinforced composite pipe, the inner circumferential surface connection of spiral welded steel pipe arranges buckle silk screen, simultaneously compound setting is revolved and is moulded coating, revolves to mould coating and coordinate the structural steel shape that forms reinforced composite pipe to mould compound internal layer with buckle silk screen.

Described large-diameter steel plastic reinforced composite pipe joint, is characterized in that described buckle silk screen is weldingly fixed on spiral welded steel pipe inwall.

Described large-diameter steel plastic reinforced composite pipe joint, revolving described in it is characterized in that moulded coating and sticked the inwall that is arranged on central core spiral welded steel pipe, and forms the integral connecting structure of pegging graft and coordinating with buckle silk screen.

Described large-diameter steel plastic reinforced composite pipe joint, is characterized in that described glass reinforced plastic winding layer applies the outer surface that is arranged on central core spiral welded steel pipe.

Described large-diameter steel plastic reinforced composite pipe joint, is characterized in that being welded and fixed between described flange and central core spiral welded steel pipe.

Above-mentioned large-diameter steel plastic reinforced composite pipe joint, novel, rational in infrastructure, by glass fibre reinforced plastics, steel pipe, the effective combination of advantage of PE plastic tube, complementation simultaneously overcomes not corrosion resistant of steel, the weak spot of plastics are not withstand voltage single class material conduit such as grade, product maximum caliber can reach 5～6m, there is fabulous crushing resistance, impact resistance and anti-corrosion capacity, product weight is light, long service life and simple installation, safety, reliably, can obviously reduce manufacture, transport and installation cost, the iron and steel pipe that its cost is identical far below carrying, product can be widely used in large hydraulic engineering, original tap water intake pipe, remote potable water water supply project, the medium transport such as municipal sewerage engineering, it is traditional steel tube, cement pipe, cast iron tube, the Updated product that the management such as steel cylinder concrete are thought.

Brief description of the drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is A-A cross section structure schematic diagram in Fig. 1;

In figure: 1-reinforced composite pipe, 1a-glass reinforced plastic winding layer, 1b-spiral welded steel pipe, 1c-buckle silk screen, 1d-revolve and mould coating, 2-flange.

Embodiment

Now, in conjunction with Figure of description, describe the specific embodiment of the present invention in detail:

As shown be large-diameter steel plastic reinforced composite pipe joint, coordinate and form with the flange 2 that is connected to its two ends by reinforced composite pipe 1, wherein the central core of reinforced composite pipe 1 is spiral welded steel pipe 1b, spiral welded steel pipe 1b adopts spiral welded technique to make moulding by steel band, the compound skin that glass reinforced plastic winding layer 1a formation reinforced composite pipe 1 is set outside spiral welded steel pipe 1b, the internal surface connection of spiral welded steel pipe 1b arranges buckle silk screen 1c, and compound setting is revolved and is moulded coating 1d, revolve and mould coating 1d and coordinate the structural steel shape that forms reinforced composite pipe 1 to mould compound internal layer with buckle silk screen 1c, this structural steel shape mould compound internal layer than the simple gluing liner one deck plastics of steel pipe inner wall have cohesiveencess good and revolve mould layer can reach certain thickness according to designing requirement, this is that the structure of the also simple gluing liner one deck plastics of steel pipe inner wall cannot realize, flange 2 is fixedly connected by welding at the two ends of central core spiral welded steel pipe 1b, outer field glass reinforced plastic winding layer 1a adopts the compound outer surface that is arranged on central core spiral welded steel pipe 1b of glass reinforced plastic winding technique, buckle silk screen 1c is fixedly connected by welding on spiral welded steel pipe 1b inwall, revolve and mould coating 1d and adopt Chinese style to revolve to mould technique and stick the internal surface that is arranged on central core spiral welded steel pipe 1b, and form the integral connecting structure of pegging graft and coordinating with buckle silk screen 1c, be the connecting band of buckle silk screen 1c compound be arranged on to revolve mould between coating 1d and spiral welded steel pipe 1b inwall, the coupler body part of buckle silk screen 1c is all plugged on to revolve and moulds in coating 1d, form structural steel shape and mould compound internal layer.

Large-diameter steel plastic reinforced composite pipe joint described in above-described embodiment, its moulding working process comprises:

1) select suitable width, the steel band of thickness according to the bore specification of reinforced composite pipe 1, adopt spiral welded technological forming to make spiral welded steel pipe 1b;

2) the buckle silk screen 1c that is fixedly connected by welding on the inwall of central core spiral welded steel pipe 1b, then carries out inner and outer surface and carries out chemical cleaning processing;

3) adopt rotatory molding equipment, using liquefied petroleum gas or natural gas to through above-mentioned steps 2) tube wall of the spiral welded steel pipe 1b that processes of processing is heated to setting temperature, drop into PE plastics, under the rotational speed of setting, make PE plastics progressively molten inwall molten and that stick on spiral welded steel pipe 1b form to revolve and mould coating 1d, in forming process, control and revolve the thickness of moulding coating 1d by controlling the input amount of PE plastics;

4) in step 3), revolving of moulding moulded coating 1d and after cooling, is placed on FRP Stetch Wrapping Machine, at the Wrapping formed glass reinforced plastic winding layer of the outer surface 1a of spiral welded steel pipe 1b, according to the processing request such as diameter and wall thickness of required pipe processing, winding parameter is set, to be wound around thickness 1～3mm as example, the relevant parameter that is wound around is set to: the value of winding angle be 45o～90o, the wide 4～200mm Dian of the row's yarn precision ± 0.5mm Dian Chou yarn Su Du≤130m/min Dian yarn sheet canoe spiral bull's eye that adopts Ke Zi Dong Qie Change to, when material combination, first carry out proportioning by glass fibre and resin, the weight accounting of glass fibre and resin is that glass fibre accounts for 60～70%, preferably 65%, resin demand accounts for 30～40%, preferably 35%, add again curing agent, catalyzer, filler, wherein the consumption of curing agent is no more than 1～4% of amount of resin, catalyst amount is no more than 1～4% of amount of resin, amount of filler is 5～20% of amount of resin, above-mentioned material carries out raw material proportioning in corresponding ratio, after mixing and after stirring, come into operation, carry out the winding of surface layer glass fibre reinforced plastics by the winding parameter of setting simultaneously, form glass reinforced plastic winding layer 1a,

5) in step 4), the glass reinforced plastic winding layer 1a of moulding is whole after solidifying can obtain described reinforced composite pipe.

Large-diameter steel plastic reinforced composite pipe of the present invention saves with spiral welded steel pipe 1b pressure-bearing, mould coating 1d and form smooth corrosion resistant inwall to revolve, form lightweight with glass reinforced plastic winding layer 1a and strengthen appearance anticorrosion, therefore, product shape is like Glass Steel Tube, anti-withstand voltage steely pipe, install like plastic tube, when thering is aesthetic appearances, there is fabulous corrosion resistant performance and high-strength light characteristic, it is withstand voltage, corrosion resistant, service life, cost of production, on social economic benefit, be all better than the various pipelines that use at present, various steel tube in prior art, cement pipe, cast iron tube, the ideal of cylinder concrete pipe is type substitute products more, in using process, can not produce for the second time and pollute, can guarantee that water quality safety is reliable, and the Placement of pipeline and easy in installation, safety, reliably, only need between end to end flange 2, be equipped with rubber seal and guarantee that connection there will not be seepage.

The production process science of this patent product, rationally and saving of labor, save time, there is the features such as efficient, energy-saving and environmental protection, the cost of material is low simultaneously, therefore its cost iron and steel pipe identical far below carrying, below describes compared with conventional steel iron pipe with reinforced composite pipe 1 described in bore 3m, long 1m this patent:

Iron and steel thickness of pipe wall is got 22mm, and the wall thickness of this patent product of carrying uniform pressure is 25mm, and wherein the thickness of glass reinforced plastic winding layer 1a is that the wall thickness of 3mm, spiral welded steel pipe 1b is 8mm, and revolving the thickness of moulding coating 1d is 14mm;

Now setting steel and processing charges is 10 yuan/kg, and glass fibre reinforced plastic material and processing charges are 22 yuan/kg, and PE plastics and processing charges are 20 yuan/kg, and cost of goods manufactured is calculated as follows:

Iron and steel pipe: 3m*3.1416*1m*0.022m*7.8cm3*10 unit/kg=16172.9 yuan/m;

Reinforced composite pipe 1 described in this patent:

Spiral welded steel pipe 1b:

3m*3.1416*1m*0.008m*7.8 cm3*10 unit/kg=5581.0 yuan/m;

Glass reinforced plastic winding layer 1a:

3m*3.1416*1m*0.003m * 1.75 cm3*22 unit/kg=1088.5 yuan/m;

Revolve and mould coating 1d:

3m*3.1416*1m*0.014m*0.9cm3x20 unit/kg=2375.0 yuan/m

Above-mentioned spiral welded steel pipe 1b, glass reinforced plastic winding layer 1a, revolve and mould tri-of coating 1d and add up to 9044.5 yuan/m;

Iron and steel pipe and reinforced composite pipe that this patent is told 1 16172.9 yuan/m-9044.5 of difference unit/m=7128.4 between the two yuan/m.

In sum, need for bore the iron and steel pipe that 3 meters, wall thickness are 22mm, if reach same aperture and pressure-bearing, adopt the large-diameter steel plastic reinforced composite pipe joint described in this patent, single meter Cheng Ben just can save 7128.4 yuan.

Claims

1. large-diameter steel plastic reinforced composite pipe joint, comprise reinforced composite pipe (1) and be equipped with the flange (2) at reinforced composite pipe (1) two ends, the central core that it is characterized in that reinforced composite pipe (1) is spiral welded steel pipe (1b), the external peripheral surface of spiral welded steel pipe (1b) is equipped with the skin of glass reinforced plastic winding layer (1a) formation reinforced composite pipe (1), the inner circumferential surface connection of spiral welded steel pipe (1b) arranges buckle silk screen (1c), compound setting is simultaneously revolved and is moulded coating (1d), revolve mould coating (1d) coordinate with buckle silk screen (1c) form reinforced composite pipe (1) structural steel shape mould compound internal layer.

2. large-diameter steel plastic reinforced composite pipe joint as claimed in claim 1, is characterized in that described buckle silk screen (1c) is weldingly fixed on spiral welded steel pipe (1b) inwall.

3. large-diameter steel plastic reinforced composite pipe joint as claimed in claim 1, revolving described in it is characterized in that moulded coating (1d) and sticked the inwall that is arranged on central core spiral welded steel pipe (1b), and forms the integral connecting structure of pegging graft and coordinating with buckle silk screen (1c).

4. large-diameter steel plastic reinforced composite pipe joint as claimed in claim 1, is characterized in that described glass reinforced plastic winding layer (1a) applies the outer surface that is arranged on central core spiral welded steel pipe (1b).

5. large-diameter steel plastic reinforced composite pipe joint as claimed in claim 1, is characterized in that being welded and fixed between described flange (2) and central core spiral welded steel pipe (1b).