CN103574183A - Tensile RTP and manufacturing method thereof - Google Patents
Tensile RTP and manufacturing method thereof Download PDFInfo
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- CN103574183A CN103574183A CN201310545478.8A CN201310545478A CN103574183A CN 103574183 A CN103574183 A CN 103574183A CN 201310545478 A CN201310545478 A CN 201310545478A CN 103574183 A CN103574183 A CN 103574183A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
- B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
- F16L58/1036—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe the coating being a preformed pipe
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a tensile RTP and a manufacturing method of the tensile RTP. The pipe comprises an inner pipe and a reinforcing layer wound on the inner pipe, the reinforcing layer is wrapped by a protective layer, the reinforcing layer is composed of two winding straps which are wound on the outer wall of the inner pipe in the opposite directions of turning at preset winding angles, a tensile layer is arranged between the reinforcing layer and the protective layer, and the tensile layer is composed of a set of fiber ropes which are evenly distributed in the circumferential direction and are pre-tensioned in the axial direction. Raw materials are placed into an inner pipe extruder to be extruded and cooled for being sized to form the inner pipe, the two high-strength winding straps are wound on the outer wall of the inner pipe in the opposite directions of turning according to the preset winding angles to form the reinforcing layer, the set of fiber ropes are evenly arranged on the outer surface of the reinforcing layer in the direction of the axis of the pipeline after being pre-tensioned to form the tensile layer, raw materials are placed into an outer pipe extruder to be extruded so as to wrap the tensile layer to form the protective layer, and then online continuous production is achieved through coiling. The tensile RTP has the advantages of being high in tensile property and in flexibility, resistant to high temperature and corrosion, safe, reliable and the like, the RTP is formed at one time according to the manufacturing technology, the production period is short, and the production efficiency is high.
Description
Technical field
The present invention relates to a kind of RTP pipe, especially a kind ofly for interspersed tension RTP pipe, also relate to its manufacture method simultaneously, belong to fluid delivery pipeline technical field.
Background technique
Existing interspersed RTP pipe (claiming again reinforced thermoplastics pipe), mainly that high-density polytene pipeline is inserted in the old pipeline that needs to repair, utilizing rigidity and the intensity of old pipeline is load-carrying construction, and the feature such as corrosion-resistant, wear-resistant, the resistance to infiltration that utilizes that high density polyethylene pipe has, form " pipe-in-pipe " composite structure, make pipeline after repairing possess the combination property of steel pipe and high density polyethylene (HDPE).The method is low to the cleaning requirement of old pipeline, pigging time and input have been reduced, not only short construction period, expense are low, also can realize the long distance of pipeline lays, the joint quantity of pipeline is dropped to minimum, and then reduced user cost, after repairing, the reliability of pipeline is improved to greatest extent simultaneously.And for old iron pipe or the steel pipe of seriously corroded or leakage, its liner RTP pipe can reach and recover pipeline function, the object increasing the service life.Liner RTP pipe is in the market mainly used in low pressure, the occasion of low-tension, and using scope is relatively limited to.In benthal oil-gas pipeline, land intert the installation process of inner tube etc., pipeline will bear larger axial tensile force, and because ocean current and wave effect are also born large random axial tensile force by pipelines such as making marine riser, ocean cross-over connection pipeline.The pipeline of the use such as marine oil and gas pipeline, land interspersed inner tube, marine riser and ocean cross-over connection pipeline mostly at present is RTP pipe, yet existing RTP pipe only can bear a small amount of instantaneous axial tension, its resistance to tension does not reach the usage requirement of afore mentioned rules far away, moreover, when RTP pipe bears axial tension, the winding angle of equilibrium of its reinforcing band will diminish, and contraction radially appears in pipeline, thus bearing capacity and the working life of having reduced pipeline.
summary of the invention
The technical problem to be solved in the present invention is the defect existing according to prior art, a kind of tension RTP pipe is proposed, provided manufacture method simultaneously, the work loads that fluid is carried not only can be born, the axial tensile force that hauled load in pipeline installation process and environmental factor cause can also be under the prerequisite that does not affect pipeline transportation performance, born.
The present invention is technical solution problem by the following technical programs; a kind of tension RTP pipe; comprise inner tube and be wound around enhancement layer on inner pipe; described enhancement layer outer wrapping protective layer; described enhancement layer consists of two take-up straps that are wrapped in outer wall of inner tube from contrary rotation direction with predetermined winding angle; between described enhancement layer and protective layer, be provided with stretch-resisting layer, described stretch-resisting layer is comprised of one group of circumferential uniform pre-tensioner axial textile rope.
RTP pipe of the present invention is composited by four-layer structure, and wherein inner tube plays the effect of carrying fluid, and inner tube adopts high density polyethylene (HDPE), not only can guarantee the compactness that fluid is carried, also have corrosion-resistant, low wearing and tearing, the advantages such as good sealing effect; Enhancement layer plays the effect of bearing interior pressure, and then guarantees when RTP pipe is subject to interior pressure not deform; Stretch-resisting layer can bear pipeline installed load and environment random load, and the textile rope that forms stretch-resisting layer need to be carried out pre-tensioner processing, to guarantee the maximization of tension force in using process; Protective layer can protect each load-carrying construction of pipeline injury-free in installation and using process.Like this, the axial tensile force of pipeline discharge pressure and installed load and the generation of environment random load is treated respectively, fluid conveying pressure is mainly born by enhancement layer, and axial tensile force is mainly born by stretch-resisting layer, to realize the rational division of work of pipeline working stress under different loads state, make RTP pipe not only can bear the pressure loading that pipeline is carried fluid, can also bear the hauled load of pipeline installation process and the axial tensile force that environmental factor causes, and then make pipeline under the prerequisite of not damaging fluid transportation performance, increase substantially its resistance to tension.Meanwhile, RTP pipe, when having the interspersed pipe of common polythene advantage, can also meet in high pressure and high tensile strength situation and use.
The present invention is further technical solution problem by the following technical programs:
Aforesaid tension RTP pipe, wherein said winding angle is 50～60 °.
Aforesaid tension RTP pipe, the pre-tensioner stress of wherein said textile rope is 180～220 newton.
Aforesaid tension RTP pipe, the circumferential interval of wherein said pre-tensioner textile rope is more than or equal to 2mm.Make like this, the protective layer of RTP pipe can be bonding with enhancement layer, and make stretch-resisting layer can bear preferably axial pressure.
In general, when pipe fitting is subject to axial tension, the spiral winding angle of pipe fitting enhancement layer will change (generally diminishing), the ability of bearing pressure loading reduces, and then cause pipe fitting to be out of shape, gently make pipe fitting internal diameter diminish, affect flowing medium transmission, heavy cause whole pipe fitting fracture failure.Like this, in stretch-resisting layer, the pre-tensioner textile rope of axial distribution can avoid installed load to act on RTP pipe itself, when being subject to axial tension, do not affect RTP pipe anti-in the usability of external pressure.
Aforesaid tension RTP pipe, wherein said take-up strap is the compound strip that aramid fibre and high density polyethylene (HDPE) form.High density polyethylene (HDPE) (being called for short HDPE) is that in main chain, average every 1000 carbon atoms are only containing several side chains, and density is generally 0.946～0.976g/cm
3polyethylene.
Aforesaid tension RTP pipe, wherein said enhancement layer is bonded on the outer wall of inner tube of extrusion molding shaping by hot melting way, and described stretch-resisting layer is bonded in enhancement layer appearance by hot melting way, and described enhancement layer is extruded coated high density polyethylene (HDPE) outward again and is formed protective layer.High density polyethylene (HDPE) is PE100 or PE80.
The manufacture method of tension RTP pipe of the present invention, comprises the following steps:
One, high density polyethylene (HDPE) raw material is put in inner tube extruder, it is heated and is sheared after compression is processed obtain viscous state material, extruding and moulding cooling and shaping form inner tube;
Two, on the outer wall of inner tube after cooling and shaping, according to predetermined winding angle, from contrary rotation direction, be wound around two high strength take-up straps, form enhancement layer;
Three, by one group of textile rope pre-tensioner to its pretension tensile stress be 180～220 newton, then by wire feeder, this is organized to pre-tensioned textile rope and along conduit axis direction, is evenly arranged in the outer surface of enhancement layer, form stretch-resisting layer;
Four, high density polyethylene (HDPE) raw material is put into outer tube extruder, it is heated and is sheared after compression is processed obtain viscous state material, outer tube extruder is extruded viscous state material to be coated on outside stretch-resisting layer, forms protective layer, obtains RTP pipe;
Five, RTP pipe is enclosed and receives to realize on-line continuous production.
The equipment of its use of manufacture method of above-mentioned tension RTP pipe comprises inner tube extruder successively according to processing sequence, spiral winding machine, tensioning device, wire feeder and outer tube extruder.The present invention adopts one-step method production process, and making flow process is convenient and swift.Manufacturing equipment of the present invention also comprises the textile rope pretension controlling device being arranged on routing machine, can increase and regulate the pre-tensioning of textile rope, reduces slackness and the tension force lack of uniformity of textile rope, improves the tensile modulus of pipeline.
The manufacture method of aforesaid tension RTP pipe, wherein in described step 2, enhancement layer machines and rear it is carried out to Plastic Welding, the enhancement layer that adopts interlayer heating welding machine internally to manage and be coated on outside inner tube heats, until the high density polyethylene (HDPE) of inner tube and enhancement layer is fused together, inner tube and enhancement layer are bonded together; In described step 3, obtain after stretch-resisting layer, adopt interlayer heating welding machine to heat enhancement layer and the stretch-resisting layer being wrapped in outside enhancement layer, until bond together after the two melting; In described step 4, after protective layer moulding, adopt the antagonism of interlayer heating welding machine to draw layer and the protective layer being coated on outside stretch-resisting layer to heat, until bond together after the two melting.In above-mentioned production technology, adopt many interlayer heating welding machines that the interlayer of pipeline is bonded as to a whole composite structure, eliminate inner tube and enhancement layer take-up strap, enhancement layer take-up strap and stretch-resisting layer textile rope, the space between stretch-resisting layer textile rope and protective layer.
The manufacture method of aforesaid tension RTP pipe, therein in described step 3, the material of described stretch-resisting layer textile rope is aramid fibre, one end of described textile rope is fixed on wire feeder, the other end is connected with tensioning device through the machine head port mould of outer tube extruder, the annulus in one group of band winding displacement hole is evenly set on the head of described outer tube extruder, after described textile rope being passed to the winding displacement hole in outer tube cross-head mouth mould during wiring, adopt tensioning device pre-tensioner, more described pre-tensioned textile rope is evenly distributed on to the outer surface of enhancement layer.Like this, after textile rope is pre-tensioner, can not produce compressive force to inner tube, in the stressed drawing process of pipe fitting, all the other three-deckers are almost without distortion, can meet pipe fitting in the requirement of high tensile strength and working pressure, and can select the textile rope of varying strength to meet pressure and the pulling force usage requirement that client is different.
The manufacture method of aforesaid tension RTP pipe, wherein said winding angle is 50～60 °; The heating-up temperature of described high density polyethylene (HDPE) raw material is 180～230 ℃.
RTP pipe of the present invention not only can bear the pressure loading that pipeline is carried fluid, can also bear the hauled load of pipeline installation process and the axial tensile force that environmental factor causes, there is the advantages such as tensility is high, flexibility is high, high pressure resistant, corrosion-resistant and safe and reliable simultaneously, its preparation process once-through, without turnover, with short production cycle, manufacturing efficiency is high, process loss is little, can be used as the interspersed inner tube in benthal oil-gas pipeline, marine riser, ocean cross-over connection pipeline and land etc., be particularly useful for the transformation reparation of old pipeline.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of inner tube in the present invention.
Fig. 3 is the structural representation of enhancement layer take-up strap in the present invention.
Fig. 4 is stretch-resisting layer and protective layer flow process chart in the present invention.
Embodiment
Embodiment one
The tension RTP pipe of the present embodiment, its structure as depicted in figs. 1 and 2, comprise inner tube 1 and be wrapped in the enhancement layer 2 in inner tube 1, enhancement layer 2 consists of two take-up straps that are wrapped in inner tube 1 outer wall from contrary rotation direction with predetermined winding angle, and wherein winding angle is 54.7 °.Enhancement layer 2 outer wrapping protective layers 4, between enhancement layer 2 and protective layer 4, be provided with stretch-resisting layer 3, stretch-resisting layer 3 is comprised of one group of circumferential uniform pre-tensioner axial textile rope 8, textile rope 8 is pre-tensioner by tensioning device, the pre-tensioner stress of textile rope 8 is 200 newton, textile rope after pre-tensioner 8 is evenly arranged in to enhancement layer 2 outer surfaces by wire feeder 5 along conduit axis direction, and the circumferential interval of pre-tensioner textile rope 8 (being the spacing of arranging of adjacent two textile rope) is 2mm, so that the protective layer 4 of RTP pipe can be bonding with enhancement layer 2, and stretch-resisting layer 3 can bear axial pressure preferably.In addition, take-up strap is that aramid fibre 21 is PE80 with its material rate of high density polyethylene (HDPE) 22() the compound strip (see figure 3) that forms.Enhancement layer 2 is bonded on inner tube 1 outer wall of extrusion molding shaping by hot melting way; stretch-resisting layer 3 is bonded in enhancement layer 2 appearances by hot melting way; outer the extruding again of enhancement layer 2 is coated high density polyethylene (HDPE) formation protective layer 4, and wherein the material rate of high density polyethylene (HDPE) is PE100 or PE80.
The manufacture method of tension RTP pipe in the present embodiment, comprise the following steps: by material rate, be first that the high density polyethylene (HDPE) of polythene PE 80 or PE100 is in extruder hopper is put inner tube extruder into, and it is heated (temperature is 180～230 ℃) and shears compression and process, obtain viscous state material, the extrusion system of extruder carries out extrusion modling to viscous state material and processes rear cooling and shaping, obtains inner tube 1; The winding angle according to 54.7 ° is wrapped in inner tube 1 outer wall from contrary rotation direction by two high strength take-up straps to adopt spiral winding machine, forms enhancement layer 2.After enhancement layer 2 machines, it is carried out to Plastic Welding, adopting interlayer heating welding machine internally to manage 1 heats with the enhancement layer 2 being coated on outside inner tube 1, until the high density polyethylene (HDPE) of inner tube 1 and enhancement layer 2 is fused together, inner tube 1 and enhancement layer 2 are bonded together.Secondly, by be positioned at one group of textile rope on wire feeder 58 adopt tensioning devices pre-tensioner to its pretension tensile stress be 200 newton, by wire feeder 5, this is organized to pre-tensioned textile rope 8 again and along conduit axis direction, be evenly arranged in the outer surface of enhancement layer 2, form stretch-resisting layer 3(and see Fig. 4), obtain after stretch-resisting layer 3, adopt interlayer heating welding machine to heat enhancement layer 2 and the stretch-resisting layer 3 being wrapped in outside enhancement layer 2, until bond together after the two melting.Then the high density polyethylene (HDPE) that by material rate is polythene PE 80 or PE100 is put into outer tube extruder and it is heated (temperature is 180～230 ℃) and shears compression and process, obtain viscous state material, extruder is extruded viscous state material to be coated on outside stretch-resisting layer 3, form protective layer 4, cooling and shaping, after protective layer 4 moulding, adopt the antagonism of interlayer heating welding machine to draw layer 3 and the protective layer 4 being coated on outside stretch-resisting layer 3 to heat, until bond together after the two melting, obtain RTP pipe, finally above-mentioned RTP pipe being enclosed to receipts (coiling online) produces to realize the on-line continuous of long distance line.
Wherein, the manufacturing equipment of tension RTP pipe comprises inner tube extruder successively according to processing sequence, spiral winding machine, tensioning device, wire feeder 5 and outer tube extruder.The material of stretch-resisting layer textile rope 8 is aramid fibre.Cross-head structure as shown in Figure 4, the annulus 9 in one group of band winding displacement hole is evenly set on the inwall of outer tube cross-head mouth mould 6, textile rope 8 can be evenly distributed on enhancement layer 2 outer surfaces through winding displacement hole, on head, be also provided with the PE mother tube 7 that may extend to pipe outer surface, during wiring, first the tubing only with inner tube 1 and enhancement layer 2 is inserted in machine head port mould 7, again one end of textile rope 8 is fixed on wire feeder 5, the other end is connected with tensioning device through the machine head port mould 6 of outer tube extruder, be that the winding displacement hole that the other end passes in machine head port mould 6 is evenly arranged in enhancement layer 2 outer surfaces, then adopt tensioning device to carry out pre-tensioner to textile rope 8, textile rope after pre-tensioner 8 is close to enhancement layer 2 outer surfaces of tubing, form stretch-resisting layer 3, meanwhile, high density polyethylene (HDPE) raw material is put into outer tube extruder through hopper, raw material is transported to by hopper at it in process of machine head port mould and heats through barrel, screw rod shearing compression is processed and is obtained viscous state material, final viscous state material is delivered to mouthful mould 6 through PE mother tube 7, tube surfaces extrusion modling in mouth mould 6, form protective layer 4.Therefore,, in tubing manufacture process, the extrusion modling of the machine shaping of stretch-resisting layer 3 and protective layer 4 is carried out simultaneously, has accelerated making flow process.
Embodiment two
The present embodiment is with embodiment one difference: enhancement layer 2 consists of two take-up straps that are wrapped in inner tube 1 outer wall from contrary rotation direction with predetermined winding angle, and wherein winding angle is 50 °; The textile rope 8 that forms stretch-resisting layer 3 is pre-tensioner by tensioning device; the pre-tensioner stress of textile rope 8 is 180 newton; textile rope after pre-tensioner 8 is evenly arranged in to enhancement layer 2 outer surfaces by wire feeder 5 along conduit axis direction; and pre-tensioner textile rope 8 be circumferentially spaced apart 6mm; so that the protective layer 4 of RTP pipe can be bonding with enhancement layer 2, and stretch-resisting layer 3 can bear axial pressure preferably.
In the tension RTP of the present embodiment pipe manufacturing method, the winding angle according to 50 ° is wrapped in inner tube 1 outer wall from contrary rotation direction by two high strength take-up straps to adopt spiral winding machine, forms enhancement layer 2; By one group of textile rope 8 adopt tensioning devices pre-tensioner to its pretension tensile stress be 180 newton, then by wire feeder 5, this is organized to pre-tensioned textile rope 8 and along conduit axis direction, is evenly arranged in the outer surface of enhancement layer 2, form stretch-resisting layer 3, obtain stretch-resisting layer 3.
Embodiment three
The present embodiment is with embodiment one difference: enhancement layer 2 consists of two take-up straps that are wrapped in inner tube 1 outer wall from contrary rotation direction with predetermined winding angle, and wherein winding angle is 60 °; The textile rope 8 that forms stretch-resisting layer 3 is pre-tensioner by tensioning device; the pre-tensioner stress of textile rope 8 is 220 newton; textile rope after pre-tensioner 8 is evenly arranged in to enhancement layer 2 outer surfaces by wire feeder 5 along conduit axis direction; and pre-tensioner textile rope 8 be circumferentially spaced apart 2mm; so that the protective layer 4 of RTP pipe can be bonding with enhancement layer 2, and stretch-resisting layer 3 can bear axial pressure preferably.
In the tension RTP of the present embodiment pipe manufacturing method, the winding angle according to 60 ° is wrapped in inner tube 1 outer wall from contrary rotation direction by two high strength take-up straps to adopt spiral winding machine, forms enhancement layer 2; By one group of textile rope 8 adopt tensioning devices pre-tensioner to its pretension tensile stress be 220 newton, then by wire feeder 5, this is organized to pre-tensioned textile rope 8 and along conduit axis direction, is evenly arranged in the outer surface of enhancement layer 2, form stretch-resisting layer 3, obtain stretch-resisting layer 3.
Claims (10)
1. a tension RTP manages; comprise inner tube and be wound around enhancement layer on inner pipe; described enhancement layer outer wrapping protective layer; it is characterized in that: described enhancement layer consists of two take-up straps that are wrapped in outer wall of inner tube from contrary rotation direction with predetermined winding angle; between described enhancement layer and protective layer, be provided with stretch-resisting layer, described stretch-resisting layer is comprised of one group of circumferential uniform pre-tensioner axial textile rope.
2. tension RTP pipe according to claim 1, is characterized in that: described winding angle is 50～60 °.
3. tension RTP pipe according to claim 1 and 2, is characterized in that: the pre-tensioner stress of described textile rope is 180～220 newton.
4. tension RTP pipe according to claim 3, is characterized in that: the circumferential interval of described pre-tensioner textile rope is more than or equal to 2mm.
5. tension RTP pipe according to claim 4, is characterized in that: described take-up strap is the compound strip that aramid fibre and high density polyethylene (HDPE) form.
6. tension RTP according to claim 5 manages; it is characterized in that: described enhancement layer is bonded on the outer wall of inner tube of extrusion molding shaping by hot melting way; described stretch-resisting layer is bonded in enhancement layer appearance by hot melting way, and described enhancement layer is extruded coated high density polyethylene (HDPE) outward again and formed protective layer.
7. the manufacture method of tension RTP pipe according to claim 1, is characterized in that comprising the following steps:
One, high density polyethylene (HDPE) raw material is put in inner tube extruder, it is heated and is sheared after compression is processed obtain viscous state material, extruding and moulding cooling and shaping form inner tube;
Two, on the outer wall of inner tube after cooling and shaping, according to predetermined winding angle, from contrary rotation direction, be wound around two high strength take-up straps, form enhancement layer;
Three, by one group of textile rope pre-tensioner to its pretension tensile stress be 180～220 newton, then by wire feeder, this is organized to pre-tensioned textile rope and along conduit axis direction, is evenly arranged in the outer surface of enhancement layer, form stretch-resisting layer;
Four, high density polyethylene (HDPE) raw material is put into outer tube extruder, it is heated and is sheared after compression is processed obtain viscous state material, outer tube extruder is extruded viscous state material to be coated on outside stretch-resisting layer, forms protective layer, obtains RTP pipe;
Five, RTP pipe is enclosed and receives to realize on-line continuous production.
8. the manufacture method of tension RTP pipe according to claim 7, it is characterized in that: in described step 2, enhancement layer machines and rear it is carried out to Plastic Welding, the enhancement layer that adopts interlayer heating welding machine internally to manage and be coated on outside inner tube heats, until the high density polyethylene (HDPE) of inner tube and enhancement layer is fused together, inner tube and enhancement layer are bonded together; In described step 3, obtain after stretch-resisting layer, adopt interlayer heating welding machine to heat enhancement layer and the stretch-resisting layer being wrapped in outside enhancement layer, until bond together after the two melting; In described step 4, after protective layer moulding, adopt the antagonism of interlayer heating welding machine to draw layer and the protective layer being coated on outside stretch-resisting layer to heat, until bond together after the two melting.
9. the manufacture method of tension RTP pipe according to claim 7, it is characterized in that: in described step 3, the material of described stretch-resisting layer textile rope is aramid fibre, one end of described textile rope is fixed on wire feeder, the other end is connected with tensioning device through the machine head port mould of outer tube extruder, the annulus in one group of band winding displacement hole is evenly set on the head of described outer tube extruder, after described textile rope being passed to the winding displacement hole in outer tube cross-head mouth mould during wiring, adopt tensioning device pre-tensioner, again described pre-tensioned textile rope is evenly distributed on to the outer surface of enhancement layer.
10. the manufacture method of tension RTP pipe according to claim 7, is characterized in that: described winding angle is 50～60 °; The heating-up temperature of described high density polyethylene (HDPE) raw material is 180～230 ℃.
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Cited By (10)
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| CN104482331A (en) * | 2014-11-20 | 2015-04-01 | 南京晨光欧佩亚复合管工程有限公司 | Intelligent RTP (reinforcing thermal pipe) tube and production method thereof |
| CN105508807A (en) * | 2016-02-03 | 2016-04-20 | 河北永正环保设备有限公司 | Reinforced thermoplastic composite pipe for non-excavation insertion and processing method thereof |
| CN106079499A (en) * | 2016-06-13 | 2016-11-09 | 浙江伟星新型建材股份有限公司 | The constant temperature multiple tube preparation method of enhancing worked in coordination with by a kind of fiber rope band |
| CN106115101A (en) * | 2016-08-09 | 2016-11-16 | 江苏奇科技有限公司 | A kind of barrel-shaped container of large scale heavy caliber using fabricated structure |
| CN108105507A (en) * | 2017-12-15 | 2018-06-01 | 武汉理工大学 | A kind of RTP tube hot-melt adhesive paste carbon fibre composite casing and its application process |
| CN108194742A (en) * | 2018-01-23 | 2018-06-22 | 南京晨光复合管工程有限公司 | A kind of connection structure of RTP tube high pressure connection and attaching method thereof |
| CN109291477A (en) * | 2018-09-29 | 2019-02-01 | 上海英泰塑胶股份有限公司 | Two-way reinforced composite pipe of thermoplasticity continuous glass-fiber prepreg tape journal axle and preparation method thereof |
| CN110328876A (en) * | 2019-07-08 | 2019-10-15 | 苏州艾特斯环保设备有限公司 | A kind of preparation method of fireproofing corrosion resistant erosion air hose |
| CN111196069A (en) * | 2018-11-16 | 2020-05-26 | 中国石油天然气集团有限公司 | Joint for reinforced thermoplastic composite pipe and preparation method thereof |
| CN117227132A (en) * | 2023-11-16 | 2023-12-15 | 济南万通铸造装备工程有限公司 | Production equipment and production method for coating polyethylene sheath on polyurethane heat-insulating pipe |
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| CN106079499A (en) * | 2016-06-13 | 2016-11-09 | 浙江伟星新型建材股份有限公司 | The constant temperature multiple tube preparation method of enhancing worked in coordination with by a kind of fiber rope band |
| CN106115101A (en) * | 2016-08-09 | 2016-11-16 | 江苏奇科技有限公司 | A kind of barrel-shaped container of large scale heavy caliber using fabricated structure |
| CN108105507A (en) * | 2017-12-15 | 2018-06-01 | 武汉理工大学 | A kind of RTP tube hot-melt adhesive paste carbon fibre composite casing and its application process |
| CN108194742A (en) * | 2018-01-23 | 2018-06-22 | 南京晨光复合管工程有限公司 | A kind of connection structure of RTP tube high pressure connection and attaching method thereof |
| CN108194742B (en) * | 2018-01-23 | 2024-04-12 | 南京晨光复合管工程有限公司 | Connection structure and connection method of high-voltage connector for RTP (real-time transport protocol) pipe |
| CN109291477A (en) * | 2018-09-29 | 2019-02-01 | 上海英泰塑胶股份有限公司 | Two-way reinforced composite pipe of thermoplasticity continuous glass-fiber prepreg tape journal axle and preparation method thereof |
| CN111196069A (en) * | 2018-11-16 | 2020-05-26 | 中国石油天然气集团有限公司 | Joint for reinforced thermoplastic composite pipe and preparation method thereof |
| CN110328876A (en) * | 2019-07-08 | 2019-10-15 | 苏州艾特斯环保设备有限公司 | A kind of preparation method of fireproofing corrosion resistant erosion air hose |
| CN117227132A (en) * | 2023-11-16 | 2023-12-15 | 济南万通铸造装备工程有限公司 | Production equipment and production method for coating polyethylene sheath on polyurethane heat-insulating pipe |
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