CN208392772U

CN208392772U - Pipe

Info

Publication number: CN208392772U
Application number: CN201820414137.5U
Authority: CN
Inventors: S·V·萨姆伊洛夫; S·V·沙尔雅品; A·N·费里波夫
Original assignee: OBSCHESTVO S OGRANICHENNOY OTVETSTVENNOSTYU GRUPPA POLYMERTEPLO
Current assignee: OBSCHESTVO S OGRANICHENNOY OTVETSTVENNOSTYU GRUPPA POLYMERTEPLO; OBSCHESTVO S OGRANICHENNOY OTVETSTVENNOSTYU "GRUPPA POLYMERTEPLO"
Priority date: 2017-12-07
Filing date: 2018-03-26
Publication date: 2019-01-18
Anticipated expiration: 2028-03-26
Also published as: WO2019112472A1

Abstract

The utility model relates to the structure of the pipe for trandfer fluid, tube material is in the operating condition resistant to the fluid, and the pipe includes for supplying water and the pipe of heat supply.Have technical effect that the reliability for improving pipe, and realize due to the fact that: in the pipe of the enhancing system of wall and continuous fiber with polymer material, wall is made of heat-proof polythene (PERT), and enhances system and be made and be located in tube wall in the form of the reticular structure of continuous aramid fibre.Pipe can also include other layers, such as thermal insulation layer, barrier layer, external protection, and wherein the outer surface of tube wall or external protection can be made with ripple.

Description

Pipe

Technical field

The utility model relates to the structure of the pipe for trandfer fluid, tube material is resistance to the fluid in the operating condition By the pipe includes for supplying water and the pipe of heat supply.

Background technique

Operating condition requires to convey the fluid under pressure in wide temperature range by pipe, this needs sufficiently high pipe Intensity.For a long time it is well known that for such purpose, using the pipe of polymer material, the pipe including various polyethylene is described The all for example crosslinked polyethylenes (PEX) of polyethylene, heat-proof polythene (PERT).It is this compared with for the metal tube of identical purpose The shortcomings that pipe includes that the thickness of tube wall is thicker, it reduce the capacity of pipe, cause the material for manufacturing pipe consumption increase with And the weight of pipe increases.

These disadvantages usually are eliminated by applying the enhancement layer of high strength fibre on polyethylene pipe, the enhancement layer is held The Main Load that load is applied by the fluid conveyed.

In this case, the pipe of polyethylene and enhancement layer expression can be combined adhesively or two uncombined each other Layer.If fruit fiber is not affixed on pipe, such as on August 12nd, 2004 publication number WO 2004/068016 (International Application Serial No. PCT/ CA2004/000105 described in), then the fiber can be formed relative to its home position along pipe axis and freely be moved with displacement It is dynamic, it is formed so-called " freely enhancing system ", this causes the non-uniform enhancing along length of tube.

Fixation of the enhancement layer on polyethylene pipe can be to avoid being likely to occur in the storage and operating process of pipe without increasing Strong region.For this purpose, using adhesive phase, described adhesive layer is applied under or over enhancement layer, for example, such as 2010 years Described in Russian utility model patent the 90523rd that January 10 announced.However, polyethylene pipe, adhesive and reinforcing fiber Different heat expansion coefficient can cause the structural failure of enhancement layer, this cannot be avoided a possibility that generating without enhancing region completely, The reinforcing fiber generally includes aramid fibre, carbon fiber or glass fibre.

It, can in not needing using adhesive phase the pipe structure enhancing structure can be kept for anchoring fiber but simultaneously To eliminate disadvantages mentioned above.This pipe structure is disclosed in Russian Patent No. 2205318 of announcement on May 27th, 2003, This analogy being closest to.The pipe of the patent includes the enhancing made of being located at by thermoplastic material between internal layer and outer layer Layer, the enhancement layer are made of continuous mineral fibres or polymer fiber, and the fiber is along two opposite direction spirals Winding, the fiber go deep into the outer surface of internal layer and the inner surface of outer layer.During pipe manufacture, in by polymer material Or the reinforcing agent of continuous fiber form made of mineral material by along two opposite directions under tension spiral winding come It is applied on the outer surface of thermoplastic inner layer, the outer surface is plasticized that (while reinforcing fiber gos deep into thermoplasticity by heating Good combination is formed in the outer surface of internal layer and therewith).Then, apply thermoplastic outer and (be simultaneously partially projected into heat Reinforcing fiber on the outer surface of plasticity internal layer is goed deep into the inner surface of outer layer, forms good combination, and in outer layer and The combination with the viscosity of high-strength characteristic is formed between internal layer).

In this configuration, reinforcing fiber is securely fixed in tube wall, and can not occur to appoint relative to tube layer What is displaced, that is, form the system that couples completely, and the disadvantage is that may due to enhancement layer higher intensity and tube layer is increased Strong damage layer.

It is described the disadvantage is that leading to the reason of pipe reliability deficiency.

In this case, term " reliability " is construed as limiting in operation and maintenance condition down tube in the defined time The ability to allow all parameter values of the function needed for defined inside the plan completion is kept in degree.

Utility model content

The purpose of this utility model is to eliminate the disadvantage.

Have technical effect that the reliability for improving pipe.

Technical effect is achieved due to the fact that: in the enhancing system of wall and continuous fiber with polymer material Pipe in, wall is made of heat-proof polythene (PERT), and enhances system in the form of the reticular structure of aramid fibre It is made and is located in tube wall.

In one embodiment of pipe, the reticular structure of aramid fibre can be formed by continuous fiber, the company Continuous fiber along relative to longitudinal axis of the direction relative to each other and relative to pipe at special angle be wound in two layers.

In another embodiment of pipe, the reticular structure of aramid fibre is formed by continuous fiber, described continuous Fiber along relative to longitudinal axis of the direction relative to each other and relative to pipe at special angle be wound in two layers, and It is braided with one another.

Meanwhile in the two embodiments, enhancing system can also include the fiber positioned along the longitudinal axis of pipe.

The fiber positioned relative to each other and relative to the longitudinal axis of pipe with special angle can it is braided with one another and With the fibrage of the longitudinal axis positioning along pipe.

In one embodiment of pipe, reinforcing fiber can be encapsulated in the covering body (cover) of PERT.Around enhancing The covering body of the PERT of fiber is formed for continuous reinforcing fiber along the channel that its axis moves.

The outer surface of tube wall can be made with ripple (made corrugated).The ripple can be spiral shape or circle Shape.

In some embodiments, the usually thermal insulation layer made of foamable polymer has can be set in pipe, for example, foaming is highly dense Spend polyethylene and/or polyurathamc and/or blown polyisocyanurate.

Gas-barrier layer has can be set in gas diffusion in order to prevent, pipe, can be by including have adhesive phase more The film of tunic is made of foamable polymer.Other selections for manufacturing gas-barrier layer are also possible.

Several layers foamable polymer can be used for gas barrier.

In some embodiments of pipe, foamable polymer is flexible.

Outer nappe (cover) has can be set in pipe.In some embodiments of pipe, which can have wave Line.

Tube wall can be made of the second class PERT.

In some embodiments of pipe, at least one of the reinforcing fiber (that is, aramid fibre) of aromatic polyamides Divide is single fiber (ultimate fibers) and/or staple fiber (staple fiber) and/or combination aramid fibre.

Staple fiber can form band.

The size of network cells cannot be less than 1mm × 1mm, in addition to using the feelings for being located at PERT and coating intracorporal fiber Condition.In this case, reticular structure can be formed by absolutely not any fiber being laid with gap between each other.

Covering body around the PERT of reinforcing fiber is formed for continuous reinforcing fiber along the channel that its axis moves.

PERT is suitable for material of the manufacture for the pipe for warm hot water supply.The performance of this material is (including long-term Intensity) allow to be used together it with crosslinked polyethylene in for warm hot water supply system.However, the polymer does not need to hand over Connection is with for using under the described conditions, which determines the uniform stability of its performance.About heat-resisting destructiveness, PERT is excellent In common pipe materials material for the above purpose, such as polypropylene and high density polyethylene (HDPE).In general, the performance of PERT allows to mention The reliability of height pipe made of this material.

The fact that PERT can be combined by means of welding permission not only with the help of mechanical fitting but also passes through It welds to link the pipe of this material.The solderability of material also brings advantage during pipe manufactures, and provides integral wall The formation of (monolithic wall), to provide the reliability of pipe.

For enhancing system, using the aramid fibre being made of aramid yarns, the aromatic polyamides Yarn, which can be twisted, to be twisted (twisted) or can not be twisted by twisting.Make enhancing system more strong at fiber yarn combination. It is destroyed in addition, fiber is less than yarn during pipe manufacture.These situations also improve the reliability of pipe.Aromatics is poly- The use of amide reinforcing fiber provides its semi-free fixation in the wall of PERT, because the combination of these materials provides Aramid fibre in the wall of PERT the pressure of trandfer fluid and/or at a temperature of and under bending load along A possibility that its axis shift.It but is only possible along the displacement of fibre axis.Since reinforcing fiber is located in tube wall, and And the material of tube wall penetrates into the web elements of enhancing system, therefore can not be to left/right (far from axis) displacement.Fiber edge A possibility that its axis shift, allows to balance the load generated under the bending of internal pressure, thermal expansion or pipe, thus protects tube wall Material damage and the reliability for improving pipe.

Enhancing system is made in the form of reticular structure, and indicates to intersect continuous fiber, and the fiber can be opposite In the longitudinal axis each other and relative to pipe at special angle.It is important using the reticular structure of continuous fiber, because Which form the unit for being filled with PERT during pipe manufacture, integrated tube wall is as a result formd, to improve the reliable of pipe Property.

Unit size is necessary at least 1mm × 1mm, this is because the PERT that otherwise would be impossible to sufficient amount passes through unit To form integral tube structure.

Guarded by location of the reinforcing fiber in tube wall its from external action, for example, mechanism, moisture are invaded, thus Improve the reliability of pipe.

When heat transfer medium to be supplied in pipe, pipe wall material (that is, PERT) provides the impenetrability and heat resistance of pipe, And enhances system and bear the Main Load as caused by the pressure of heat transfer medium.The intensity of enhancing system depends on the strong of fiber Degree, quantity and ply stacking angle.The fixed semi-free system of fiber provides the complete of the holding and PERT layers for enhancing system structure Property (integrity).

In order to improve the reliability of pipe, continuous reinforcing fiber and along opposite direction winding relative to each other and Longitudinal axis relative to pipe is laid with special angle.For example, the reinforcing fiber of first layer is twined in one direction with special angle Around, and the fiber of the second layer is wound with identical angle but along opposite direction.

It is known that enhancing system can when reinforcing fiber is laid with relative to the longitudinal axis of pipe with 54.4 degree of angle Not have longitudinal fiber.This system is referred to as balance system, because all stress (axially, tangentially and radially) are all by with institute The fiber for stating angle laying is born.

In the case where the angle cannot be provided, longitudinal fiber is added to the axis in system to generate in balance system To stress.

In ply stacking angle and in the case where being laid with the abundant selection of spacing, this position of aramid fibre allows to increase Strong system equably bears the load applied by trandfer fluid, this improves the reliability of pipe (pipeline).Preferred enhancing It is the enhancing of three axis, wherein using three fleece-laying directions: two phases when fiber with pipe axis at special angle to be laid with Pair direction, and along a direction of pipe axis, this provides the balance of various stress and improves the reliability of pipe.

Along relative to direction can be compiled each other at the fiber that special angle is wound relative to pipe axis and relative to each other It knits.The braiding of fiber helps to keep its position during pipe manufactures.For identical purpose, it is proposed that be will with pipe The fiber that axis is laid at special angle mutually weaves with the fiber along pipe axis location, if along the fiber of pipe axis location It is available words.

Reinforcing fiber with determining sequence and according to determining system relative to each other and relative to pipe axis location, That is, the reinforcing fiber forms enhancing system.

For enhancing system, it is able to use single fiber (that is, single fiber (singular fibers)) or by two or more The staple fiber of a single fiber composition.In some embodiments, at least part of reinforcing fiber is single fiber or staple fiber.

At least part of the fiber of enhancing system can be aromatic polyamides conjugate fiber, that is, by a variety of aromatics polyamides The yarn of amine material forms.Staple fiber and single fiber can be conjugate fiber.Particularly, the conjugate fiber of aramid yarns It can be made of the combination of para-aramid yams and meta-aramid yarn and/or aramid copolymers. The yarn of all these types can be combined to provide strong needed for the fiber for the specific embodiment of pipe in different ways Degree and thickness.For example, the para-aramid yams with meta-aramid yarn, or there is meta-aramid The para-aramid copolymer of yarn.

It can be used as para-aramid yarn with the yarn of " Kevlar ", " Tvarong ", the production of " Heracron " trade mark Line, " Nomex " can be used as meta-aramid yarn, and " Technora " can be used as para-aramid copolymer.

Single fiber, staple fiber and conjugate fiber, which can be, twists strand, is also possible to what non-twirl twisted.It is more strong to twist the fiber twisted And it is more reliable.

Staple fiber can be made in the form of being laid with unidirectional fibre in one plane, or (so-called with braided fiber " braid over braid (ribbon) ") form be made.

One advantage of staple fiber is that required intensity is provided by using relatively thin fiber.It is identical strong in order to obtain Degree also allows enhancement layer ratio to use single fiber as a result, even if in the case where especially strong enhancing using unidirectional staple fiber or band Enhancement layer made of tieing up is thinner.This is important, because the load in tube wall is unevenly distributed when using crude fibre, this It may cause the appearance of the atenuator region (for example, unit in) between decussating fibers of pipe.Staple fiber can be to avoid this feelings Condition, to improve the reliability of pipe.

The use of staple fiber allows to use less big and less expensive braiding apparatus during manufacturing reinforced pipe, This is because reducing the quantity of fibre reel, (each spool can have winding plurality of fibers on it rather than a fibre Dimension, which increase the quantity of the fiber of enhancing system).

The combination of various types of fibers can be possible.For example, with the fiber being laid with pipe axis at special angle It can be made of staple fiber, and longitudinal fiber can be made of single fiber.Alternatively, alternatively, with pipe axis at specific The a part for the fiber that angle is laid with can be conjugate fiber, and part of it can be made of uniform yarn.In other words It says, the fiber of each in the type can merely comprise a part of all fibres for reinforced pipe.

In enhancing system, the reinforcing fiber being encapsulated in the covering body of PERT or band can be used.Closely spreading If in the case where reinforcing fiber (for example, when the size of network cells is less than 1mm × 1mm), around reinforcing fiber The use of the covering body of PERT provides the integral features of pipe structure.Meanwhile the material of tube wall is incorporated into the increasing of PERT cladding Strong fiber, and the integral structure of tube wall is formed with the minimum dimension of the unit of reticular structure, and it is even if complete in reinforcing fiber It is also such in the case where being laid with not forming unit entirely.

During pipe manufacture, the fiber covering body of PERT is incorporated into tube wall.However, aromatic polyamides reinforcing fiber Coating intracorporal mobility in PERT will not be deprived of, because covering body is formed for aramid fibre along its axis Mobile channel, wherein conduit wall will act as the supplementary protection of fiber.

Using the aramid fibre in the covering body for being encapsulated in PERT be allowed for enhancing system have by handing over Pitch the reticular structure of the minimum dimension of fibroplastic unit.In the limiting case, the virtue being encapsulated in the covering body of PERT Polyamide fiber can be adjacent to be laid with directly with one another, and at the same time by the integral structure of pipe is provided, because being made of PERT Fiber cladding body can be integrated to interior tube layer and external tube layer and be combined between interior tube layer and external tube layer.In addition, fiber will Cannot be mobile relative to its axis left/right, but it will be still maintained under temperature, pressure and/or bending load along its axis The mobile ability of line.

The outer surface of tube wall can be made with ripple.On the one hand, ripple assigns pipe with more ring stiffness and to outside The resistance of mechanism, to improve the reliability of pipe, this is particularly important in underground situations in pipes.On the other hand, ripple allows to subtract The bending radius of tubule.This can also balance the movement of the soil in underground piping convenient for pipe installation, so that pipe be made more may be used It leans on.In addition, ripple allows to reduce the consumption of the material for manufacturing tube wall compared with the smooth tube with identical ring stiffness.Pipe The ripple of the outer surface of wall is spiral shape or circular.

Thermal insulation layer has can be set in pipe.When using pipe in the network in the pipe for hot water supply of warming up, need to conduct heat The temperature of medium is maintained at required level transmitting medium in quite long distance.For this purpose, using pipe every Thermosphere, which reduce the declines of water temperature during pipe conveying.Therefore, when using the pipe of the thermal insulation layer with high heat-proof quality, with Pipe with low heat-proof quality is compared, and can be received to provide by consumer by means of the water supplied in the pipe with lower temperature Heat transfer medium assigned temperature.It is well known that the temperature for the fluid supplied under stress is lower, the operating pressure in pipe can be with Higher, this makes pipe more insensitive to pressure peak, to improve the reliability of pipe entirety.In addition, thermal insulation layer plays outside The effect of the damper of mechanism, this improves the intensity and reliability of pipe.

Thermal insulation layer can be made of foamable polymer.Foamable polymer indicates foamed plastics (aerated plastics), And due to the fact that foamable polymer is with high heat-proof quality and has damping function.Meanwhile foamable polymer (bubble Foam plastics) there is heat-proof quality more better than the heat-barrier material of routine.Moreover, foamed plastics has acceptable mechanical property. Therefore, using this material offers more effectively heat-insulated, and the reliability of pipe is improved.

Polyurethane foam (PUF) has high heat-proof quality due to lower thermal conductivity, this is for whole from heat source to consumer The holding of the temperature of a fluid apart from interior conveying is important.In addition, polyurethane foam has high-intensitive and durability.Even if Temperature change dramatically up to 150 DEG C, the thermal insulation layer of polyurethane foam will not form crackle and save heat.Due to such as anti- The performances such as impact and elasticity, polyurethane foam reduces the stress being applied on outer nappe and concentrates, therefore reduces to increasing The external action of strong system, to improve the reliability of pipe.Polyurethane foam can use under any low temperature, and at the same time Upper range operating temperature reaches 110 DEG C.This performance allows to use polyurethane foam in the pipe of heat, larger change occurs in temperature The temperature of heat transfer medium is kept under conditions of change to the maximum extent.All performances can improve the reliability of pipe.

Blown polyisocyanurate has rigidity more higher than polyurethane foam (PUF), allows to increase pipe to external machine The resistance of tool effect (for example, compression).Another important performance of blown polyisocyanurate thermal insulation layer be compared with PUF, on Limit operation temperature is up to 200 DEG C, this allows it to use under the conditions of worse.High density polyethylene foamed (FPE) has height The lucky combination of heat-proof quality and high flexibility, this allows it to be used to manufacture more flexible instlated tubular.In addition, having desired property The continuous sheet of the FPE of energy can be separately fabricated on standard extrusion equipment, and compared with the pipe with PUF thermal insulation layer, this is significant It promotes the process of manufacture instlated tubular and reduces its cost.The use of FPE is provided when the big item flexible for needing pipe The reliability of pipe under part.

The thermal expansion of known PERT is higher than the thermal expansion of the foamable polymer of the thermal insulation layer for manufacturing pipe, this causes a layer phase For mutual axial displacement, this has negative effect to the reliability of pipe.However, the ripple of the outer tube wall of PERT (thereon can be with Apply thermal insulation layer) mechanical bond of pipe and the layer around the pipe is increased, this allows to be avoided the axial displacement of layer.

In the case where pipe is provided with thermal insulation layer, ripple can be used on the outer surface of tube wall to be allowed to increase pipe and thermal insulation layer Between contact surface and preferably fixing pipe and thermal insulation layer, to improve the reliability of pipe.

The gas-barrier layer for preventing gas diffusion can be set in pipe.

The purpose of gas-barrier layer is to prevent from including that the gas of oxygen is diffused into tube wall from pipe, and prevents pipe by oxygen The negative effect of gas and other gases, to improve the reliability of pipe.Position according to gas-barrier layer relative to other tube layer, Its function can be extended.If the gas-barrier layer covers thermal insulation layer, will hinder by gas for the gas of foam insulation The displacement of body fills unit, this improves the reliability of pipe, and the displacement reduces the heat-proof quality of pipe.Gas-barrier layer can be by Film with individual features is made.The film can be multilayer, and including providing its layer mutually adhered to pipe surrounding layer, to prevent Only the film is relative to other layers of displacement.Gas-barrier layer to surrounding layer adherency for the storage, installation and operation in pipe The holding of the integral structure of middle pipe and uniform load transmission are important.

Gas-barrier layer can be made of foamed polymer material.

Making the barrier layer of foamed polymer material prevent gas from spreading and spreading inlet pipe from pipe allows to stop using with resistance Every the film of property.The use of foaming barrier layer is especially effective for flexible pipe.The availability of bubble (hole) in barrier layer allows to increase Add the flexibility of pipe, this is because in curved situation, minority only adjacent with external protection is several layers of compared with non-foamed film Hole is destroyed, but barrier layer is not destroyed integrally and splitting resistance with higher and elasticity.This means that will keep surplus Remaining bubble (hole), and the barrier property and thermal insulation of barrier layer are provided.In addition, the gas-barrier layer energy of foamed polymer material It is enough to extend in the bigger degree of the non-foamed film than identical material without being formed through tearing.Foam barrier layer it is all above-mentioned Performance is all conducive to the reliability of pipe.

In addition, will allow to increase total effective thickness of gas-barrier layer using the gas-barrier layer of foamed polymer material, Gas infiltration and foaming agent diffusion so as to improve protection pipe from passing through tube wall.

In view of barrier layer is the fact that foams, barrier layer has heat-proof quality, therefore works as and use proposed pipe When, heat loss reduces.It is all these to also improve the reliability of pipe.

The gas-barrier layer of foamed polymer material may include multiple layers made of a variety of materials, most in order to provide it Best performance, this depends on needing which kind of substance to form effective barrier property relative to.It is, for example, possible to use EVOH and polyamide Combination.EVOH has preferable barrier property relative to oxygen, and polyamide has preferable barrier property relative to water vapour Energy.

Flexible foaming polymer can be used for gas-barrier layer, this can keep the structure of this layer and it is made more may be used It leans on.

In some embodiments, pipe is provided with the outer nappe for protecting other tube layer from moisture and mechanical damage, to mention The reliability of senior executive.The ripple of the outer nappe reduces the minimum bending radius of pipe and increases ring stiffness.It shows above Influences of these parameters to reliability.

Tube wall can be made of the second class PERT, to provide higher breaking resistance and splitting resistance.

In view of compared with non-reinforcing pipe, enhancing allows to reduce the thickness of the wall of PERT, pipe is flexible.Flexible pipe energy Enough balanced actions are in the external shear-type load of pipe, to improve its reliability.

Fiber can be located at the different depth in tube wall, and which increase the breaking resistances of pipe wall material.

Detailed description of the invention

Fig. 1 is the schematic diagram of pipe, and it illustrates the tube walls 1, (institute of enhancing system 2 of continuous aromatic polyamides reinforcing fiber 3 Fiber is stated to be laid with relative to pipe axis and relative to each other with special angle along different directions and form reticular structure) and The unit 4 of reticular structure.

Fig. 2 is the schematic diagram of pipe, and wherein aromatic polyamides reinforcing fiber 3 is surrounded by the covering body 5 of PERT.

Attached drawing shows some embodiments of pipe.It will be clear to someone skilled in the art that the other embodiments of pipe are also can Can.

Specific embodiment

Pipe can manufacture in the following manner.

In order to manufacture tube wall it may first have to form the substrate (that is, internal layer of PERT) of the wall of the form of pipe.Then in this base The enhancing system for indicating reticular structure is formed on bottom.Reticular structure is winding made of fiber in the substrate of pipe；If If needing, the braiding of fiber and the insertion of longitudinal fiber are carried out.Longitudinal fiber is inserted under enhancing system or position In the enhancing system of fiber for enhancing the top of system or being embedded into winding or braiding.It then, will be with reinforcing fiber The substrate of pipe heats, and is covered with additional PERT layers (that is, the outer layers) of melting, and the melting PERT passes through reticular structure Unit is combined together with the substrate of pipe.The substrate of pipe material and it is PERT layers additional between contact point in it occurs Welding and integrated tube wall formation, enhancing system is located in the integrated tube wall.

If necessary to be embedded in multilayer enhancement layer in the pipe wall, then the step of being laid with fiber and applying PERT layers is repeated.Therefore, Fiber is laid at the different depth in tube wall.

If using the reinforcing fiber surrounded by the covering body of PERT during pipe manufacture, by the reinforcing fiber It is laid on the inside heating layer of established PERT in the above described manner.Then, as it appears from the above, the PERT layer that fiber is melted covers Lid.

If using the aromatic polyamides reinforcing fiber surrounded by the covering body of PERT, (these are fine during pipe manufacture Dimension directly abuts one another arrangement), then in order to form the integrated tube wall of PERT, the substrate of pipe and the covering body of PERT are all heated, Therefore they are welded together, and do not need to cover the fibre surrounded by the covering body of PERT with the outer layer of additional PERT Dimension.

There can also be other methods of manufacture pipe.For example, when using the covering body in PERT (it assigns fiber with rigidity) In aramid fibre when, can pass through the method for blow molding manufacture pipe.

It should be noted that about pipe claimed, term " layer " is general term, because will not in production tube Individual layer can be divided into, this is because tube wall is formed from the same material.Tube wall indicates the polymeric matrix of PERT, has height The enhancing of intensity continuous fiber.

Described method is to illustrate as example, and do not have exhaustive all possible manufacturing method.

The embodiment example of proposed technical solution is described below.

Example 1: for the pipe of trandfer fluid, wall of the pipe with PERT and the enhancing system in tube wall are described Enhancing system is made of the basic Kevlar fiber of aromatic polyamides, and the fiber is along two opposite directions with 54.4 ° of angle Degree is laid with.

Example 2: for supplying water and the pipe of heat supply, wall of the pipe with PERT and the enhancing system in tube wall, institute It states enhancing system to be made of the combination unidirectional fibre of Heracron yarn, the fiber is along two opposite directions with 54.4 ° Angle is laid with.Pipe is provided with the gas-barrier layer of foaming polyvinylidene chloride (PVDC) and the external protection of polyethylene.Due to PVDC layers are foaming, so it is with gas barrier property, it may have heat-proof quality.In order to protect foaming layer from moisture, Pipe is covered by the external protection of polyethylene.

Example 3: for supplying water and the pipe of heat supply, the pipe has the wall of PERT, is provided in the wall by three groups of fibers Manufactured enhancing system, wherein preceding two groups of fiber with pipe axis at special angle to be laid with, the fiber of third group is along pipe Axis is laid with, and together with preceding two groups of fibrage.Pipe is by the thermal insulation layer made of PUF and poly terephthalic acid second two The barrier film of alcohol ester covers, and the external protection of polyethylene is provided on thermal insulation layer and barrier film.

Example 4: for supplying water and the pipe of heat supply, the pipe has the wall of PERT, is provided in the wall and is made according to example 1 At enhancing system, the wall have the outer wall with ripple, by polyurathamc thermal insulation layer cover, and with polyethylene band The outer protection nappe of ripple.

Example 5: pipe, the pipe have the wall of PERT, are provided with the enhancing made of aramid fibre in the wall System, the aramid fibre are encapsulated in the covering body of PERT and are laid with being closely adjacent to each other, so that manufacturing in pipe During weld PERT fiber cladding body formed tube wall outer surface.

All embodiments of the not exhaustive pipe of the example.That lists in the following claims is used to manufacture the layer of fiber Any combination with any option is all possible.

Claims

1. a kind of pipe, the pipe has the tube wall of polymer material and the enhancing system of continuous fiber, which is characterized in that the pipe Wall is made of heat-proof polythene, and enhances system and be made in the form of the reticular structure of aramid fibre and be located at pipe In wall.

2. pipe according to claim 1, which is characterized in that described in the form of the reticular structure of aramid fibre Enhancing system is formed by continuous fiber, longitudinal direction of the continuous fiber along opposite direction relative to each other and relative to pipe Axis at special angle is wound in two layers.

3. pipe according to claim 1, which is characterized in that described in the form of the reticular structure of aramid fibre Enhancing system is formed by continuous fiber, longitudinal direction of the continuous fiber along opposite direction relative to each other and relative to pipe Axis at special angle is wound in two layers, and braided with one another.

4. pipe according to claim 2 or 3, which is characterized in that the described enhancing system in the form of reticular structure is additional Ground is provided with the fiber of the longitudinal axis positioning along pipe.

5. pipe according to claim 4, which is characterized in that relative to each other and the longitudinal axis relative to pipe is with specific The fiber of angle positioning is braided with one another, and the fibrage with the longitudinal axis positioning along pipe.

6. pipe according to claim 1, which is characterized in that the continuous fiber has the packet of the heat-proof polythene around it Cover body.

7. pipe according to claim 1, which is characterized in that the outer surface of the tube wall is made with ripple.

8. pipe according to claim 7, which is characterized in that the ripple of the outer surface of the tube wall is spiral.

9. pipe according to claim 7, which is characterized in that the ripple of the outer surface of the tube wall is circular.

10. pipe according to claim 1, which is characterized in that the pipe is provided with thermal insulation layer.

11. pipe according to claim 10, which is characterized in that the thermal insulation layer is made of foamable polymer.

12. pipe according to claim 11, which is characterized in that the thermal insulation layer is by high density polyethylene foamed and/or hair Bubble polyurethane and/or blown polyisocyanurate are made.

13. according to claim 1 or pipe described in 10, which is characterized in that the pipe, which is provided with, prevents the gas of gas diffusion from hindering Interlayer.

14. pipe according to claim 13, which is characterized in that the gas-barrier layer is by the film with gas barrier property It is made.

15. pipe according to claim 14, which is characterized in that the film is made into multilayer and including adhesive phase.

16. pipe according to claim 13, which is characterized in that the gas-barrier layer is made of foamable polymer.

17. pipe according to claim 16, which is characterized in that foamable polymer described in several layers is used for gas barrier.

18. pipe according to claim 16, which is characterized in that the foamable polymer is elastic.

19. according to claim 1 or pipe described in 10, which is characterized in that the pipe is provided with outer nappe.

20. pipe according to claim 19, which is characterized in that the outer nappe is made with ripple.

21. pipe according to claim 1, which is characterized in that the tube wall is made of the second class heat-proof polythene.

22. pipe according to claim 1, which is characterized in that at least partly described continuous fiber is single fiber.

23. pipe according to claim 1, which is characterized in that at least partly described continuous fiber is staple fiber.

24. pipe according to claim 1, which is characterized in that at least partly described continuous fiber is combination aromatic polyamides Fiber.

25. pipe according to claim 23, which is characterized in that the staple fiber forms band.

26. pipe according to claim 1, which is characterized in that the pipe is flexible.

27. pipe according to claim 1, which is characterized in that the size of the unit of reticular structure is at least 1mm × 1mm.

28. pipe according to claim 6, which is characterized in that reticular structure by being laid with without any with gap between each other Fiber formed.

29. pipe according to claim 6, which is characterized in that the covering body around the heat-proof polythene of reinforcing fiber is formed For continuous reinforcing fiber along the channel that its axis moves.