CN1221086A - Structure and manufacturing method of ultrahigh molecular weight polyethylene braided composite reinforced pipe - Google Patents
Structure and manufacturing method of ultrahigh molecular weight polyethylene braided composite reinforced pipe Download PDFInfo
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- CN1221086A CN1221086A CN 98120332 CN98120332A CN1221086A CN 1221086 A CN1221086 A CN 1221086A CN 98120332 CN98120332 CN 98120332 CN 98120332 A CN98120332 A CN 98120332A CN 1221086 A CN1221086 A CN 1221086A
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- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 title claims abstract description 26
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 title claims abstract description 26
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- 238000001816 cooling Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 238000009940 knitting Methods 0.000 claims description 6
- 239000000049 pigment Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 238000009954 braiding Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
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- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 claims description 3
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 claims description 3
- SJOCPYUKFOTDAN-ZSOIEALJSA-N methyl (4z)-4-hydroxyimino-6,6-dimethyl-3-methylsulfanyl-5,7-dihydro-2-benzothiophene-1-carboxylate Chemical compound C1C(C)(C)C\C(=N\O)C=2C1=C(C(=O)OC)SC=2SC SJOCPYUKFOTDAN-ZSOIEALJSA-N 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 101000983970 Conus catus Alpha-conotoxin CIB Proteins 0.000 claims description 2
- 101000932768 Conus catus Alpha-conotoxin CIC Proteins 0.000 claims description 2
- 239000004609 Impact Modifier Substances 0.000 claims description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 239000003250 coal slurry Substances 0.000 claims description 2
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- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims description 2
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- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims 1
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- 239000003921 oil Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 208000001840 Dandruff Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a structure manufacturing method and application of an ultrahigh molecular weight polyethylene braided composite reinforced pipe. The composite pipe is divided into three layers, wherein the inner layer is an ultrahigh molecular weight polyethylene pipe, the middle layer is a steel wire braided layer, and the outer layer is a high-impact-resistance PVC alloy material pipe. The composite pipe has the characteristics of high wear resistance, corrosion resistance, high pressure resistance, aging resistance, long service life and the like, the service life of the composite pipe is far longer than that of a seamless steel pipe, and the production cost of the composite pipe is lower than that of the seamless steel pipe. The composite pipe can be widely used for conveying corrosive, high-abrasion and adhesive liquid and solid-liquid mixtures such as crude oil, slurry, chemical and metal tailings, coal water slurry and the like. And can reduce the conveying pressure and the requirements of heat preservation and heating.
Description
The present invention relates to a kind of structure, prescription and manufacturing process and connecting means of withstand voltage, wear-resistant, corrosion resistant compound reinforced tube waved by super high molecular weight polythene.
Ultra-high molecular weight polyethylene is described as magical plastics.Have following characteristics: excellent abrasive, scurf resistance are 7 times of carbon steel; Friction factor is little, and stickiness is not good; Excellent chemical stability, except that the only a few solvent was corrosive to it, common inorganic, organic acid, alkali, salt and organic solvent did not all have corrosivity to this material.Ultra-high molecular weight polyethylene is similar to teflon on chemical stability, be a kind of inert material.Make tubing with this material, be particularly suitable for carrying the liquid-solid mixture that has corrosivity, adhering liquid and have corrosivity and strong abrasiveness as mine tailing, mud, water coal slurry etc. as former wet goods.But the tensile strength of ultra-high molecular weight polyethylene is low, creep resisting ability is poor, anti-cutting power is poor.Simple ultrahigh molecular weight polyethylene tubing compressive strength is low, creep easily, and anti-nature or artificial destruction ability therefore can not be as the conveyance conduits of above-mentioned material.
At present, the oil transport pipeline overwhelming majority of oil field use is a seamless steel pipe.Owing to contain saline and alkaline in the oil field water that has or contain corrosive material and abrasive material during oil-field flooding, so the very fast damage of pipeline.Moreover, because steel pipe inwall ratio is easier to adhere to crude oil and friction factor is bigger, so the pressure of carrying is bigger.And passing in time, the crude oil of steel pipe inwall deposition is more and more, and flow reduces gradually, and discharge pressure is increasing, so necessary periodic cleaning pipeline has increased a lot of cost of production.
For the particularly conveying of solidliquid mixture such as metal tailings and mud of mine tailing because high wearing and tearing and corrosion can not be used seamless steel pipe separately, and will be in steel pipe material such as wall liner direct casting stone.So not only the cost of pipeline increases (doubling at least usually) greatly, and makes, transportation, installs and all waste time and energy.
At above-mentioned situation, the objective of the invention is to disclose a kind of structure and production technology and connecting means of compound reinforced tube waved by super high molecular weight polythene material, make the compressive strength of this tubing bring up to 2～20MPa, increase creep resistant and survivability, make it to meet fully the conveying requirement of above-mentioned material.Compare with seamless steel pipe, this compound enhancing tubing has remarkable advantage: 1, improve working life greatly.Under deep-etching and high abrasive conditions, can improve several times to tens times working life.2, because the not stickiness and the friction factor of this pipe material inner wall are little, can reduce discharge pressure, this carries for long distance and is of great importance.3, because the thermal conductivity ratio steel of this tubing is little more than 10,000 times, can reduces the insulation of delivery line greatly and add heat request, this for cold zone and winter crude oil and the conveying of other material be of great importance.4, the cost of production of this tubing is lower than the cost of production of seamless steel pipe.
Main points of the present invention are: ultra-high molecular weight polyethylene (UHMW-PE) and Tissuemat E (PE WAX) are made ultrahigh molecular weight polyethylene tubing as interior pipe with extruder and corresponding mould.Again with twine knitting machine with braided steel wire on the outer wall of interior pipe.Then PVC, MBS and other auxiliary material are mixed, make high impact-resistant PVC alloy material and clamp-on in the composite dies with double screw extruder.In composite dies, coated equably the outer wall of PVC alloy material in woven tube.Obtain compound reinforced tube waved by super high molecular weight polythene through typing, traction, cut-out at last.Its structure is seen Fig. 1.This composite pipe is connected with the connecting means that welding combines through pipe end processing with by screw thread, obtains the delivery line of reality.
Now details are as follows with prescription, equipment, production technology and the Placement of compound reinforced tube waved by super high molecular weight polythene:
The manufacturing of A, ultrahigh molecular weight polyethylene tubing
A, prescription: form by two-part, A material be UHMW-PE as basis, getting its weight is 100%, it is 100～2,000,000 UHMW-PE that the A material is selected molecular weight.B material is a processing aid, and selecting molecular weight for use is 3000～5000 Tissuemat E, and consumption is 3～7%.
B, manufacturing process
1, batch mixing:, place batch mixer to mix confected materials by above-mentioned prescription batching.
2, moulding:, be equipped with pipe mold extruding and moulding through particular design with the single screw extrusion machine of mixed raw materials with the barrel trough of belt of suitable double screw extruder or particular design.The pipe mold diverterless adopts the side feeding manner.Plug hollow can feed cooling air in the ultrahigh molecular weight polyethylene tubing after the moulding.The mould plug has interlayer, can feed cooling liquid plug is cooled off temperature control.The mould second half section has outer cooling unit, can cool off die coat.The compression ratio of mould is 1.2～2.5.The extruder barrel temperature is 100～200 ℃, and die temperature is 150～210 ℃, and the temperature of mold cools down typing section and plug is controlled at 60～100 ℃.The extruder rotating speed is 10～30rpm.Ultrahigh molecular weight polyethylene tubing after the moulding is through tractor traction carrying out next process.
B, braiding
The purpose of braided steel wire is for compressive strength that improves tubing and survivability.
According to different calibers and requirement of withstand voltage, select the steel wire and the knitting tightness of different-diameter for use.With twine knitting machine with steel wire twining with the direction at tubing axis angle at 45, meet at right angles with the steel wire of reverse winding.
During winding enough tension forces to be arranged.Winding can be adopted bi-directional two-wire, also can adopt two-way multi-thread method.
C, compound
Compound high impact-resistant PVC alloy material is for the compressive strength of protecting braid and raising tubing and the creep that overcomes superhigh molecular weight polyethylene pipe outside braid.This high impact-resistant PVC alloy material has excellent ageing-resistant performance and anti-environment stress cracking ability.Can resist in the physical environment in the open air variously pound, nature and artificial destruction such as pressure.Its aging life-span is more than 30 years.
The manufacturing of a, high impact-resistant PVC alloy material
1, prescription: form by three parts.A material be PVC as basis, getting its weight is 100%, selecting the K value for use is 60～70 PVC.Other each composition relatively with the proportioning that A expects is: B, anti-impact modifier, to select MBS B-56, consumption for use be 10%.C, auxiliary material comprises heat stabilizer, oiling agent, antioxidant and pigment.C1 is a heat stabilizer, comprises the C1.1 lead sulfate tribasic, and consumption 0.5～1.2%, C1.2 are dibasic lead stearate, and consumption 0.04～0.2%, C1.3 are lead stearate, and consumption 0.54～2.2%, C1.4 are calcium stearate, consumption 0.05～0.3%.C2 is an oiling agent, selects stearic acid for use, consumption 0.07～0.6%.C3 is an antioxidant, consumption 0.001～0.002%.C4 is a pigment, can select various pigment for use.
2, manufacturing process: prepare raw material by prescription, place high speed mixer to be mixed to 120 ℃, put into the stirring of cooling batch mixer and be cooled to below 60 ℃.Mixed raw materials with the double screw extruder that is suitable for PVC, is equipped with the composite dies extruding and moulding of particular design.130～180 ℃ of extruder barrel temperature.Extruder rotating speed 10～25rpm.
B, compound: compoundly in composite dies, carry out.Composite dies is the tube forming mould of PVC alloy material, finishes the compound of PVC alloy material and woven tube again.
1, composite dies: the composite dies diverterless, adopt the side feeding manner.Plug hollow is therefrom passed the ultra-high molecular weight polyethylene woven tube.Plug has insulating sandwich to prevent the woven tube thermal distortion.Plug is shorter than overcoat, and carries out the transition to the external diameter of woven tube endways.Overcoat is longer than plug, and shrinks endways, so that the PVC alloy material is tightly coated at the woven tube outer wall.The compression ratio of mould is 5～7.The principle sketch of composite dies is seen Fig. 2.
2, combination process: the temperature of composite dies is controlled at 160～200 ℃.Be blown into the inwall that cooling air cools off the ultra-high molecular weight polyethylene woven tube continuously from the hollow plug of ultrahigh molecular weight polyethylene tubing shaping die, to prevent the woven tube thermal distortion.Tractor traction composite pipe enters in the shaper, and shaper is the cylinder that an internal diameter that has cooling unit is slightly less than composite dies mouth mould internal diameter, and cylinder is divided into upper and lower two-part, can freely open and matched moulds.Shaper feeds cooling water composite pipe is cooled to below 60 ℃.The PVC alloy material outer tube of composite pipe is through after the traction stretching and cooling off contraction, and is tightly coated outside braid, becomes one with interior pipe and braid.
Promptly obtain compound reinforced tube waved by super high molecular weight polythene through above step.
D, cut-out and the processing of pipe two ends
1, cut off: cutting machine is the cutting machine of particular design, to the composite pipe customized cut-off.Lathe tool machinable braid.Lathe tool falls the skin and the braid car of certain-length earlier, and then cuts off inner tube between two parties, makes the exposed 3mm of inner tube long.
2, composite pipe two ends processing: difference machining screw on the external pipe at composite pipe two ends, an end is the forward screw thread, the other end is a reverse thread.After processing, screw on plastic end cover respectively, prevent to damage.
The structure at composite pipe two ends is seen Fig. 3.Two ends be processed into this structure be between the pipe and the pipe with other pipe fitting between be connected.
E, connection
Connection between a, the composite pipe: adopt external pipe to be connected the method that combines with interior pipe welding with casing threads.The casing protection joint makes the mechanical strength of joint and the body intensity that compressive strength surpasses composite pipe.The effect of pipe welding fixture in sleeve pipe plays simultaneously.Interior pipe welding, the integrity of pipe in guaranteeing.
1, the structure diagram of sleeve pipe is seen Fig. 4.The sleeve pipe steel, there are forward and reverse thread in the inwall two ends.The centre of sleeve pipe is equipped with the weldering circle.
2, the weldering circle is the spiral helicine nickel chrome wire circular heating body that scribbles high temperature insulating material.The effect of weldering circle is a heating power, interior pipe is melted also welded together.The surface temperature of weldering circle is no more than 200 ℃.
3, mounting process: sleeve pipe is inserted at the two ends of composite pipe, and revoling tube is drawn in sleeve pipe with two composite pipe terminations and is the exposed interior pipe contacts in two ends.Enclose energising for weldering, continue revoling tube, the weldering circle is entered in the interior pipe, and make the distortion of inner tube head, be full of the annular space of sleeve pipe, reach setting value until rotation torque.Continue to give weldering circle energising a period of time, the inner tube head is melted fully weld together.Remove power supply, the weldering circle is stayed in the pipe.The connection of composite pipe is promptly accused and is finished.
B, composite pipe are connected with pipe fitting
The joint of various pipe fittings such as threeway, elbow, valve and composite pipe all is processed with the internal thread of certain-length.The screw thread back is lined with certain thickness ultra-high molecular weight polyethylene lining, and is equipped with the weldering circle.Its mounting process is identical with the connection between the composite pipe.
Through D, E two steps, just compound reinforced tube waved by super high molecular weight polythene can be mounted to delivery line.This pipeline both can place ground also can make somebody a mere figurehead or bury ground.
The inside and outside footpath of compound reinforced tube waved by super high molecular weight polythene can be selected arbitrarily.Rule is that the thickness of internal layer superhigh molecular weight polyethylene pipe is 3～10mm, outer PVC alloy material tube thickness 2～4mm, and middle braid gauge of wire and knitting tightness are selected according to requirement of withstand voltage.
Description of drawings:
Fig. 1 is the compound reinforced tube waved by super high molecular weight polythene structural representation, and 1 is outer PVC alloy material pipe among the figure.2 is Steel Wire Braid.3 is the internal layer superhigh molecular weight polyethylene pipe.
Fig. 2 is the compound die structural representation, and 1 is the plug of hollow among the figure.2 is the thermal-protective coating of plug.3 is the changeover portion of plug.4 is the compound die overcoat.5 is a mouthful mould contraction section.6 is the side material feeding mouth.7 are the braiding composite pipe.8 is cool air.
Fig. 3 is a compound reinforced tube waved by super high molecular weight polythene two-end structure schematic representation, and 1 is the naked section of internal layer superhigh molecular weight polyethylene pipe among the figure.2 is the forward screw thread on the external pipe.3 is the reverse thread of the other end.
Fig. 4 is the structural representation of sleeve pipe, and 1 is the sleeve pipe body among the figure.2 is interior forward screw thread.3 is the interior reverse thread of the other end.4 is built-in weldering circle.5 is threading hole.6 structural representations for the weldering circle.
Embodiment: with the external diameter 110mm of above-mentioned technology manufacturing, internal diameter 96mm, the technology effective double screw extruder as shown in table 3, outer that the interior pipe prescription of the compound reinforced tube waved by super high molecular weight polythene of withstand voltage 12MPa is as shown in table 1, the single screw extrusion machine of outer tube prescription effective barrel trough of belt as shown in table 2, interior is extruded is extruded, extrude and combination process as shown in table 4.Table 1
Table 2
Table 3 (temperature unit ℃)
Extruder rotating speed 15rpm table 4 (temperature unit ℃)
Extruder rotating speed 20rpm
| ?UHMW-PE | ?100％??wt |
| ?PE?WAX | ?5％????wt |
| ?PVC?S-1000 | ????100％???wt |
| ?MBS?B-56 | ?????10％???wt |
| Lead sulfate tribasic | ???0.85％???wt |
| Dibasic lead stearate | ???0.07％???wt |
| Lead stearate | ???0.85％???wt |
| Stearic acid | ???0.17％???wt |
| Antioxidant | ???0.001％??wt |
| Barrel temperature | One district 120 | Two districts 160 | Three districts 180 | Four districts 190 |
| Die temperature | One district 160 | Two districts 190 | Three districts 210 | Four districts 80 |
| Barrel temperature | One district 140 | Two districts 160 | Three districts 180 | Four districts 180 |
| Die temperature | One district 150 | Two districts 170 | Three districts 180 | Four districts 200 |
Claims (6)
1, the structure of compound reinforced tube waved by super high molecular weight polythene, this structure be with superhigh molecular weight polyethylene pipe as internal layer, the mesosphere is a Steel Wire Braid, skin is a high impact-resistant PVC alloy material.
2, as the manufacture method of the compound reinforced tube waved by super high molecular weight polythene of structure as described in claims 1, it is characterized in that the internal layer superhigh molecular weight polyethylene pipe produces with extrusion method, middle Steel Wire Braid is to twine braiding, and outer high impact-resistant PVC alloy material pipe is extruded compound.
The manufacturing of A, ultrahigh molecular weight polyethylene tubing
A, prescription: form by two-part, A material be UHMW-PE as basis, getting its weight is 100%, it is 100～3,000,000 UHMW-PE that the A material is selected molecular weight.B material is a processing aid, and selecting molecular weight for use is 3000～5000 Tissuemat E, and consumption is 3～7%.
B, manufacturing process
1, batch mixing:, place batch mixer to mix confected materials by above-mentioned prescription batching.
2, moulding:, be equipped with pipe mold extruding and moulding through particular design with the single screw extrusion machine of mixed raw materials with the barrel trough of belt of suitable double screw extruder or particular design.The pipe mold diverterless adopts the side feeding manner.Plug hollow can feed cooling air in the ultrahigh molecular weight polyethylene tubing after the moulding.The mould plug has interlayer, can feed cooling liquid plug is cooled off temperature control.The mould second half section has outer cooling unit, can cool off die coat.The compression ratio of mould is 1.2～2.5.The extruder barrel temperature is 100～200 ℃, 150～210 ℃ of die temperatures, and the temperature of mold cools down typing section and plug is controlled at 60～100 ℃.The extruder rotating speed is 10～30rpm.
B, braiding
According to different calibers and requirement of withstand voltage, select the steel wire and the knitting tightness of different-diameter for use.With twine knitting machine with steel wire twining with the direction at tubing axis angle at 45, meet at right angles with the steel wire of reverse winding.
During winding enough tension forces to be arranged.Winding can be adopted bi-directional two-wire according to different tube diameters and requirement of withstand voltage, also can adopt two-way multi-thread method.
C, compound
The manufacturing of a, high impact-resistant PVC alloy material
1, prescription: form by three parts.A material be PVC as basis, getting its weight is 100%, selecting the K value for use is 60～70 PVC.Other each composition with respect to the proportioning of A material is: B, and anti-impact modifier is selected MBS B-56 for use, and consumption is 10%.C, auxiliary material comprises heat stabilizer, oiling agent, antioxidant and pigment.C1 is a heat stabilizer, comprises the C1.1 lead sulfate tribasic, and consumption 0.5～1.2%, C1.2 are dibasic lead stearate, and consumption 0.04～0.2%, C1.3 are lead stearate, and consumption 0.54～2.2%, C1.4 are calcium stearate, consumption 0.05～0.3%.C2 is an oiling agent, selects stearic acid for use, consumption 0.07～0.6%.C3 is an antioxidant, consumption 0.001～0.002%.C4 is a pigment, can select various pigment for use.
2, manufacturing process: prepare raw material by prescription, place high speed mixer to be mixed to 120 ℃, put into the stirring of cooling batch mixer and be cooled to below 60 ℃.Mixed raw materials with the double screw extruder that is suitable for PVC, is equipped with the composite dies extruding and moulding of particular design.130～180 ℃ of extruder barrel temperature.Extruder rotating speed 10～25rpm.
B, compound: compoundly in composite dies, carry out.
1, composite dies: the composite dies diverterless, adopt the side feeding manner.Plug hollow is therefrom passed the ultra-high molecular weight polyethylene woven tube.Plug has insulating sandwich to prevent the woven tube thermal distortion.Plug is shorter than overcoat, and carries out the transition to the external diameter of woven tube endways.Overcoat is longer than plug, and shrinks endways, so that the PVC alloy material is tightly coated at the woven tube outer wall.The compression ratio of mould is 5～7.
2, combination process: the temperature of composite dies is controlled at 160～200 ℃.Be blown into the inwall that cooling air cools off the ultra-high molecular weight polyethylene woven tube continuously from the hollow plug of ultrahigh molecular weight polyethylene tubing shaping die.Tractor traction composite pipe enters and is cooled in the shaper below 60 ℃.
3, the cut-out and the pipe end processing of the compound reinforced tube waved by super high molecular weight polythene of producing as claims 1～2 described structure and manufacture method.
A, cut-out: the cutting machine lathe tool falls the skin and the braid car of certain-length earlier, and then cuts off inner tube between two parties, makes the exposed 3mm of inner tube long.
B, the processing of composite pipe two ends: difference machining screw on the external pipe at composite pipe two ends, an end is the forward screw thread, the other end is a reverse thread.
4, as the connection of claims 1～3 described compound reinforced tube waved by super high molecular weight polythene
Connection between A, the composite pipe: adopt external pipe to be connected the method that combines with interior pipe welding with casing threads.
A, sleeve pipe steel, there are forward and reverse thread in the inwall two ends.The centre of sleeve pipe is equipped with the weldering circle.
B, weldering circle are the spiral helicine nickel chrome wire annular heaters that scribbles high temperature insulating material.The surface temperature of weldering circle is no more than 200 ℃.
C, construction process are inserted sleeve pipe with the two ends of composite pipe, and revoling tube is strained two composite pipes.Enclose energising for weldering, continue revoling tube, the weldering circle is entered in the interior pipe, and make the distortion of inner tube head, be full of the annular space of sleeve pipe, reach setting value until rotation torque.Continue to give weldering circle energising a period of time, the inner tube head is melted fully weld together.Remove power supply, the weldering circle is stayed in the pipe.
B, composite pipe are connected with pipe fitting
The joint of various pipe fittings such as threeway, elbow, valve and composite pipe all is processed with the internal thread of certain-length.The screw thread back is lined with certain thickness ultra-high molecular weight polyethylene lining, and is equipped with the weldering circle.Its construction process is identical with the connection between the composite pipe.
5, the pipeline that forms as claims 1～4 described compound reinforced tube waved by super high molecular weight polythene and connecting means, it is characterized in that compressive strength is 2～20MPa, when being used for corrosivity such as conveying crude oil, mud, chemistry and metal tailings, water coal slurry, high abrasiveness, adhering liquid and solidliquid mixture, be several times to tens times of seamless steel pipe its working life.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98120332 CN1221086A (en) | 1998-10-07 | 1998-10-07 | Structure and manufacturing method of ultrahigh molecular weight polyethylene braided composite reinforced pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98120332 CN1221086A (en) | 1998-10-07 | 1998-10-07 | Structure and manufacturing method of ultrahigh molecular weight polyethylene braided composite reinforced pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1221086A true CN1221086A (en) | 1999-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98120332 Pending CN1221086A (en) | 1998-10-07 | 1998-10-07 | Structure and manufacturing method of ultrahigh molecular weight polyethylene braided composite reinforced pipe |
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| Country | Link |
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| CN (1) | CN1221086A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319732C (en) * | 2005-12-15 | 2007-06-06 | 江苏联冠科技发展有限公司 | Process for combining ultrahigh molecular weight polyethylene tubing and steel tube |
| CN100389283C (en) * | 2006-07-12 | 2008-05-21 | 张春建 | Polyester acid-resisting high-pressure for composite pipe for oil field use and producing process thereof |
| CN102996917A (en) * | 2011-09-08 | 2013-03-27 | 张俊达 | Mineral nylon galvanized composite pipe |
| CN103131096A (en) * | 2011-11-24 | 2013-06-05 | 山东金达管业有限公司 | High-impact strength PVC mining pipe and preparation method thereof |
| CN105065793A (en) * | 2015-09-10 | 2015-11-18 | 山东融汇管通股份有限公司 | Composite direct-drinking water pipe and manufacturing process thereof |
| CN105423059A (en) * | 2015-12-08 | 2016-03-23 | 五行科技股份有限公司 | Repairing method for prolonging service life of oil delivery pipeline |
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| CN112944056A (en) * | 2021-02-22 | 2021-06-11 | 临海伟星新型建材有限公司 | Multifunctional polyethylene composite pipe for conveying liquid food and preparation method thereof |
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- 1998-10-07 CN CN 98120332 patent/CN1221086A/en active Pending
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| CN1319732C (en) * | 2005-12-15 | 2007-06-06 | 江苏联冠科技发展有限公司 | Process for combining ultrahigh molecular weight polyethylene tubing and steel tube |
| CN100389283C (en) * | 2006-07-12 | 2008-05-21 | 张春建 | Polyester acid-resisting high-pressure for composite pipe for oil field use and producing process thereof |
| CN102996917A (en) * | 2011-09-08 | 2013-03-27 | 张俊达 | Mineral nylon galvanized composite pipe |
| CN103131096A (en) * | 2011-11-24 | 2013-06-05 | 山东金达管业有限公司 | High-impact strength PVC mining pipe and preparation method thereof |
| CN103131096B (en) * | 2011-11-24 | 2015-03-25 | 山东金达管业有限公司 | High-impact strength PVC mining pipe and preparation method thereof |
| CN105880635A (en) * | 2014-08-25 | 2016-08-24 | 黄伟津 | Preparation method using turning step to remove copper plated iron pipe copper plate layer |
| CN105065793A (en) * | 2015-09-10 | 2015-11-18 | 山东融汇管通股份有限公司 | Composite direct-drinking water pipe and manufacturing process thereof |
| CN105423059A (en) * | 2015-12-08 | 2016-03-23 | 五行科技股份有限公司 | Repairing method for prolonging service life of oil delivery pipeline |
| CN106684780A (en) * | 2016-12-30 | 2017-05-17 | 深圳市名雕装饰股份有限公司 | PVC (polyvinyl chloride) aluminum-plastic composite flame-retardant shielded electrical casing and manufacture apparatus |
| CN112944056A (en) * | 2021-02-22 | 2021-06-11 | 临海伟星新型建材有限公司 | Multifunctional polyethylene composite pipe for conveying liquid food and preparation method thereof |
| WO2022174535A1 (en) * | 2021-02-22 | 2022-08-25 | 临海伟星新型建材有限公司 | Multi-functional polyethylene composite pipe for liquid food delivery and manufacturing method |
| CN115703273A (en) * | 2021-08-10 | 2023-02-17 | 中国石油天然气集团有限公司 | Integrated flexible composite pipe and preparation method thereof |
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