CN108561660A - A kind of jointing and method of fiber reinforced thermoplastics composite coiled tubing - Google Patents
A kind of jointing and method of fiber reinforced thermoplastics composite coiled tubing Download PDFInfo
- Publication number
- CN108561660A CN108561660A CN201810387832.1A CN201810387832A CN108561660A CN 108561660 A CN108561660 A CN 108561660A CN 201810387832 A CN201810387832 A CN 201810387832A CN 108561660 A CN108561660 A CN 108561660A
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- Prior art keywords
- coiled tubing
- inlay
- composite coiled
- metallic
- fiber
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- 239000002131 composite material Substances 0.000 title claims abstract description 121
- 239000000835 fiber Substances 0.000 title claims abstract description 65
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 25
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims description 41
- 239000011347 resin Substances 0.000 claims description 41
- 229920001187 thermosetting polymer Polymers 0.000 claims description 40
- 150000001875 compounds Chemical class 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000003365 glass fiber Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000008719 thickening Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 3
- 229920001567 vinyl ester resin Polymers 0.000 claims description 3
- 229920000914 Metallic fiber Polymers 0.000 claims 1
- 229920006231 aramid fiber Polymers 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 60
- 229920001903 high density polyethylene Polymers 0.000 description 10
- 239000004700 high-density polyethylene Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 5
- 229910052755 nonmetal Inorganic materials 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006263 metalation reaction Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/14—Flanged joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
A kind of jointing and method of fiber reinforced thermoplastics composite coiled tubing realize, male adapter, female adapter and composite coiled tubing tube body are linked as entirety using male adapter and the connection of female adapter.Male adapter and the manufacturing process of female adapter with composite coiled tubing tube body production process synchronize be carried out continuously, the female adapter of one composite coiled tubing one end and the male adapter of other composite coiled tubing one end are bolted, two sealing rings are installed between male adapter and female adapter, after two composite coiled tubing connections, position with delivered inside media contact is liner layer, liner layer is all etch-proof thermoplastic, therefore jointing will not reduce the Corrosion Protection of pipeline, and pipeline caliber is consistent, the problem of becoming smaller there is no mechanical attaching type metal joint part caliber, do not influence transfer efficiency, all anticorrosion thermoplastics inside pipeline using this method connection, and it is easily achieved joint connection in site, installation speed is fast.
Description
Technical field
The invention belongs to non-metal composite pipe fields, and in particular to a kind of fiber reinforced thermoplastics composite coiled tubing
Jointing and method.
Background technology
Nonmetal pipeline has excellent corrosion resistance, it has also become the etch-proof important development of oil gas field gathering line
Direction.For oil gas field with nonmetal pipeline from initial glass reinforced plastic pipe, including till now can coiling fibre-reinforced thermoplastic
Property plastics composite coiled tubing, steel skeleton composite, flexible composite pipe, plastic alloy multiple tube etc. are a plurality of types of nonmetallic compound
Pipe.Nonmetallic composite coiled tubing generally uses the three-decker of liner layer, enhancement layer and external protection.Existing nonmetallic compound company
Continuous pipe is main to be connected using mechanical attaching type metal joint, i.e., metal joint is first inserted into composite pipe body liner layer, then use
Outside is withheld or interior swollen mode makes metal joint and non-metallic pipe bluk recombination.If China Patent Publication No. is CN
The utility model patent of 201925632 U discloses a kind of attaching type composite pressure pipe fitting and pipe connecting structure just belongs to
Fastening type metal connector type of attachment.Using whole nonmetallic feed-line that metal joint connects is withheld, there are localized metallics to lead to
Road, the appearance in localized metallic channel can bring the unfavorable factor of four aspects.First, metal material and the medium of conveying directly connect
It touches, if metal material selection is improper, can be corroded by pumped (conveying) medium, and then influence the active time of whole pipeline, increase
Operation risk；Second is that since metal joint is inserted into inside nonmetallic composite coiled tubing, the channel that metal joint is formed
Caliber is less than the caliber of whole pipeline, influences the transfer efficiency of pipeline；Third, withholding between metal joint and nonmetallic tube body
Binding force only by between the two frictional force provide, bond strength is limited, is significantly smaller than the tensile strength of nonmetallic tube body,
There is the risk that connector slips in construction work；Fourth, for the non-metal composite pipe line of conveying high-pressure natural gas, gas medium
The structure sheaf that multiple tube can be slowly penetrated into from the interface that metal joint and composite pipe lining layer are withheld, leads to composite pipe structure layer
Failure.
For this purpose, the prior art also proposed some Novel connection types, if China Patent Publication No. is CN 103267192
The patent of invention of A discloses a kind of flexible composite tube connector and attaching method thereof.It proposes to use thermoplastic material in the patent
Material makes connector, and connector, by ultrasonic bonding connection, is connected between connector and connector by way of flange with multiple tube tube body
It connects.It is found by experiment that the connector and attaching method thereof that the invention proposes is only applicable to lower operating pressure, because of joint
Without the structure of similar multiple tube tube body enhancement layer, only uniform plastic material, joint load performance is significantly less than compound
The load performance of pipe tube body.
Invention content
The present invention for the above-mentioned prior art in deficiency, and it is an object of the present invention to provide a kind of fiber reinforced thermoplastics is compound
The jointing and method of continuous pipe solve nonmetallic composite coiled tubing using mechanical attaching type metal joint connect band come not
Sharp factor.
To achieve the above object, the present invention uses following technical scheme：
A kind of jointing of fiber reinforced thermoplastics composite coiled tubing, including be arranged in the first composite coiled tubing pipe
The male adapter in body end portion and female adapter in the second composite coiled tubing tube body end is set, male adapter and female adapter
It matches, wherein the male adapter includes inlay in convex metallic；First composite coiled tubing tube body and the second composite coiled tubing
Pipe structure is identical, and the first composite coiled tubing tube body includes liner layer, and enhancement layer is enclosed on the outside of liner layer, is wrapped on the outside of enhancement layer
It is wrapped with external protection；Inlay is sleeved on the end of the liner layer of the first composite coiled tubing tube body in convex metallic, in convex metallic
The composite material of fiber and thermosetting resin is provided with outside the external protection of inlay and the first composite coiled tubing tube body；Concave surface connects
Head includes embedding inlay in the concave metallic of mates with convex metallic, and inlay setting is compound continuous second in concave metallic
The end of the liner layer of pipe tube body is provided on the outside of the external protection of inlay and the second composite coiled tubing tube body in concave metallic
The composite material of fiber and thermosetting resin.
The present invention, which further improves, to be, inlay includes convex surface ontology in convex metallic, and convex surface body end is provided with
Convex surface shoulder is provided with several annular protrusions on the body outer wall of convex surface；Inlay includes concave surface ontology, concave surface sheet in concave metallic
Body end portion is provided with concave surface shoulder, and concave surface shoulder matches with convex surface shoulder.
The present invention, which further improves, to be, annular protrusion and the annular protrusion on the ontology of concave surface of convex surface ontology are 3
~5；The equal spaced set of annular protrusion on convex surface ontology and concave surface ontology, and between two neighboring annular protrusion away from
From for 40~60mm.
The present invention, which further improves, to be, several away from being offered on the farthest annular protrusion of convex surface shoulder on the ontology of convex surface
It is a for changing the winding direction of composite material and the groove of angle；The annular protrusion side farthest away from concave surface shoulder on the ontology of concave surface
Edge offers several for changing the winding direction of composite material and the groove of angle.
The present invention, which further improves, to be, convex surface shoulder is circumferentially uniformly provided with several screw holes, and concave surface shoulder is circumferentially equal
It is even to offer several screw holes, by the bolt of the screw hole on concave surface shoulder and convex surface ontology by male adapter and female adapter
It is connected.
The present invention, which further improves, to be, sealing ring is arranged between convex surface shoulder and concave surface shoulder.
The present invention, which further improves, to be, the angle of the Filament Wound Composite of fiber and thermosetting resin is 65 °~
85 °, the thickness of winding is 8~50mm.
The manufacturing process of a kind of connection method of connector, male adapter synchronizes continuously with composite coiled tubing tube body production process
Carry out, installed on the liner layer end of the first composite coiled tubing in convex metallic after inlay, pair with inlay in convex metallic
Connected liner layer end carry out thicken flange processing, then use with the continuous fiber of enhancement layer and thermosetting resin it is compound after
It is wound on inlay in composite coiled tubing tube body and convex metallic, inlay in convex metallic is made to be placed in fiber and thermosetting property completely
Among the composite material of resin, male adapter completes after solidification, while wrapping up enhancement layer and outer guarantor successively on liner layer
Sheath；
The manufacturing process of female adapter is synchronized with composite coiled tubing tube body production process and is carried out continuously, compound continuous second
It is installed on the liner layer end of pipe in concave metallic after inlay, pair liner layer end being connected with inlay in concave metallic carries out
Thicken flange processing, then with the continuous fiber of enhancement layer and thermosetting resin it is compound after composite coiled tubing tube body and concave surface gold
It is wound on inlay in belonging to, inlay in concave metallic is made to be placed in completely among the composite material of fiber and thermosetting resin, cured
Back concave surface connector completes, while wrapping up enhancement layer and external protection successively on liner layer；Using bolt by male adapter
It is connected with female adapter.
The present invention, which further improves, to be, the angle of the Filament Wound Composite of fiber and thermosetting resin is 65 °~
85 °, the thickness of winding is 8~50mm；The material of inlay is steel in convex metallic.
The present invention, which further improves, to be, the composite material of fiber and thermosetting resin is prepared by following procedure：It will
Fiber impregnation is made in thermosetting resin；Wherein, fiber is glass fibre, carbon fiber, basalt fibre, polyester fiber or virtue
Synthetic fibre fiber；Thermosetting resin is epoxy resin, unsaturated polyester resin or vinyl ester resin.
Compared with prior art, the invention has the advantages that：
The present invention by be arranged male adapter and with the matched female adapter of male adapter, and convex metallic is embedded
Body is sleeved on the end of the liner layer of the first composite coiled tubing tube body, and inlay is arranged in the second composite coiled tubing pipe in concave metallic
The end of the liner layer of body, inlay embeds mates with convex metallic in concave metallic, realizes fiber reinforced thermoplastics
The connection of composite coiled tubing, the present invention has stronger operating pressure, and has connector not slip in construction work, has simultaneously
There is preferable load performance.
Further, by the way that male adapter is connected with female adapter across the bolt of concave surface shoulder and convex surface ontology, easily
In installation.
It is proposed by the present invention it is a kind of can coiling fiber reinforced thermoplastics composite coiled tubing connection method, use is convex
The connection of plane tie and female adapter realizes that male adapter, female adapter and composite coiled tubing tube body are linked as entirety, therefore connect
Joint tensile strength after connecing is not less than multiple tube tube body tensile strength, in female adapter in metal on inlay with increase with it is fine
The annular protrusion of dimension and thermosetting resin interfacial area, can greatly increase the bond strength of inlay and composite coiled tubing in metal,
Avoid the problem that similar mechanical attaching type connector is easily deviate from, one can coiling fiber reinforced thermoplastics composite coiled tubing one
The female adapter at end with other one can the male adapter of coiling fiber reinforced thermoplastics composite coiled tubing one end pass through
It is bolted, two sealing rings is installed between male adapter and female adapter, it is defeated with inside after two composite coiled tubing connections
It is liner layer to send the position of media contact, and liner layer is all etch-proof thermoplastic, therefore jointing will not reduce
The Corrosion Protection of pipeline, and pipeline caliber is consistent, the problem of becoming smaller there is no mechanical attaching type metal joint part caliber, no
Transfer efficiency is influenced, all anticorrosion thermoplastics inside the pipeline using this method connection are not only resistance to defeated inside pipeline
Send dielectric corrosion, pipeline exterior locally exposed martensitic stain less steel prevented also from external environment to the external rotten of pipe joint
Erosion, service life is long, and this method is easy to joint connection in site, and installation speed is fast.
Further, pair liner layer end being connected with inlay in convex metallic carries out thickening flange processing in the present invention,
The leakproofness of liner layer and male adapter end face can be increased.Pair liner layer end being connected with inlay in concave metallic adds
Thick flange processing, can increase the leakproofness of liner layer and female adapter end face.
Description of the drawings
Fig. 1 is the composite coiled tubing longitudinal profile schematic diagram with male adapter；
Fig. 2 is the composite coiled tubing longitudinal profile schematic diagram with female adapter；
Fig. 3 is composite coiled tubing connection diagram.
Wherein：1, liner layer；2, enhancement layer；3, protective layer；4, inlay in convex metallic；5, annular protrusion；6, screw hole；7、
Inlay in concave metallic；8, the first sealing ring；9, bolt；10, the second sealing ring；11, convex surface ontology；12, convex surface shoulder；13、
Concave surface ontology；14, concave surface shoulder.
Specific implementation mode
Below by embodiment, technical scheme of the present invention will be described in further detail.
Please refer to Fig.1, Fig. 2 and Fig. 3, one kind provided by the invention can coiling fiber reinforced thermoplastics it is compound continuous
The jointing of pipe, including the male adapter and setting that are arranged in the first composite coiled tubing tube body end are compound continuous second
The female adapter of pipe tube body end, male adapter are matched with female adapter, wherein the male adapter includes in convex metallic
Inlay 4；First composite coiled tubing tube body is identical as the second composite coiled tubing pipe structure, and the first composite coiled tubing tube body includes interior
Lining 1,1 outside of liner layer are enclosed with enhancement layer 2, and 2 outside of enhancement layer is enclosed with external protection 3；Inlay 4 is set in convex metallic
In the end of the liner layer 1 of the first composite coiled tubing tube body, the outer guarantor of inlay 4 and the first composite coiled tubing tube body in convex metallic
The composite material of fiber and thermosetting resin is provided with outside sheath 3；Inlay 4 includes convex surface ontology 11, convex surface in convex metallic
11 end set of ontology has convex surface shoulder 12, and 3~5 annular protrusions 5 are provided on 11 outer wall of convex surface ontology；
Female adapter includes the inlay 7 in concave metallic with inlay 7 in 4 matched concave metallic of inlay in convex metallic
Inlay 7 and the second composite coiled tubing tube body are set in the end of the liner layer 1 of the second composite coiled tubing tube body, concave metallic
The outside of external protection 3 is provided with the composite material of fiber and thermosetting resin.Inlay 7 includes concave surface ontology in concave metallic
13, ontology 13 end set in concave surface has concave surface shoulder 14, concave surface shoulder 14 to match with convex surface shoulder 12.
The annular protrusion 5 of convex surface ontology 11 is 3~5 with the annular protrusion 5 on concave surface ontology 13；11 He of convex surface ontology
5 equal spaced set of annular protrusion on concave surface ontology 13, and the distance between two neighboring annular protrusion 5 be 40~
60mm.The effect of annular protrusion 5 on 11 outer wall of convex surface ontology is inlay 4 and composite coiled tubing tube body in enhancing convex metallic
Bond strength.The effect of annular protrusion 5 on the body outer wall of concave surface is inlay 7 and composite coiled tubing tube body in enhancing concave metallic
Bond strength.
Away from offering 4 twining for changing composite material on the farthest annular protrusion of convex surface shoulder 12 on convex surface ontology 11
Around direction and the groove of angle；The annular protrusion edge farthest away from concave surface shoulder 14 has 4 to be used to change on concave surface ontology 13
The winding direction of change composite material and the groove of angle.
Convex surface shoulder 12 is circumferential to be uniformly provided with several screw holes 6, and concave surface shoulder 14 is circumferential to be uniformly provided with 8 screw holes 6, leads to
Male adapter is connected by the bolt for the screw hole 6 crossed on concave surface shoulder 14 and convex surface ontology 11 with female adapter.
Sealing ring is set between convex surface shoulder 12 and concave surface shoulder 14.
The angle of the Filament Wound Composite of fiber and thermosetting resin is 65 °~85 °, and the thickness of winding is 8~50mm.
The connection method of above-mentioned jointing is specific as follows：
The manufacturing process of male adapter is synchronized with composite coiled tubing tube body production process and is carried out continuously, compound continuous first
It is installed on 1 end of liner layer of pipe tube body in convex metallic after inlay 4, pair liner layer being connected with inlay in convex metallic 41
End carry out thicken flange processing, then use with 2 continuous fiber of enhancement layer and thermosetting resin it is compound after it is compound first
Certain thickness is wound using certain angle on inlay 4 in continuous pipe and convex metallic, inlay 4 in convex metallic is made to be set to completely
Among the composite material of fiber and thermosetting resin, male adapter completes after solidification, while being wrapped successively on liner layer 1
Wrap up in enhancement layer 2 and external protection 3；
The manufacturing process of female adapter is identical with male adapter, and inlay in convex metallic 4, which is only changed to concave metallic, embeds
Body 7.Specially：The manufacturing process of female adapter is synchronized with composite coiled tubing tube body production process and is carried out continuously, second
It installs in concave metallic after inlay 7, pair is connected with inlay in concave metallic 7 interior on 1 end of liner layer of composite coiled tubing
1 end of lining carry out thicken flange processing, then use with 2 continuous fiber of enhancement layer and thermosetting resin it is compound (fiber and
Thermosetting resin is complex as impregnating fiber through thermosetting resin, and the composite wood of fiber and thermosetting resin is obtained after dipping
Material) after certain thickness is wound using certain angle on inlay 7 in the second composite coiled tubing tube body and concave metallic, make concave surface
Inlay 7 is placed in completely among the composite material of fiber and thermosetting resin in metal, and solidification back concave surface connector completes, together
When wrap up enhancement layer 2 and external protection 3 successively on liner layer 1；Male adapter is connected with female adapter using bolt.
By the Filament Wound Composite of fiber and thermosetting resin in convex metallic on inlay 4 and external protection 3, fiber
Angle with the Filament Wound Composite of thermosetting resin is 65 °~85 °, and the thickness of winding is 8~50mm.
The material of inlay 4 is steel in convex metallic, preferentially selects martensitic stain less steel.
The fibrous material that the composite material of fiber and thermosetting resin is preferentially selected and composite coiled tubing tube body enhancement layer
Fibrous material is continuous continual same fiber.
The composite material of fiber and thermosetting resin is prepared by following procedure：Fiber impregnation is made in thermosetting resin
.Wherein, fiber is inorganic or organic fiber, preferentially selects glass fibre, carbon fiber, basalt fibre, polyester fiber or virtue
Synthetic fibre fiber；Thermosetting resin preferentially selects epoxy resin, unsaturated polyester resin or vinyl ester resin.
Pair 1 end of the liner layer being connected with inlay in convex metallic 4 carries out thickening flange processing in the present invention, can increase
The leakproofness of liner layer and male adapter end face.
Pair 1 end of the liner layer being connected with inlay in concave metallic 7 carries out thickening flange processing, can increase liner layer with
The leakproofness of female adapter end face.
By the bolt of the screw hole 6 on concave surface shoulder 14 and convex surface ontology 11 by male adapter and female adapter phase
Even, when connection, first sealing ring 8, convex surface shoulder are set between the projecting surface and the concave face of concave surface shoulder 14 of convex surface shoulder 12
Second sealing ring 10 is set between 12 and concave surface shoulder 14.
The material of inlay 7 is identical as inlay in convex metallic 4 in concave metallic.One can coiling fiber reinforced thermolplastic
The male adapter of plastics composite coiled tubing with other one can coiling fiber reinforced thermoplastics composite coiled tubing concave surface
, it can be achieved that connection that can be between coiling fiber reinforced thermoplastics composite coiled tubing after connector connection.The male adapter
Size can meet sealing effect with the dimensional fits of female adapter.
Embodiment 1：DN80mm PN26MPa can coiling glass fiber reinforcement high density polyethylene (HDPE) composite coiled tubing company
Connect method
1 material of composite coiled tubing liner layer is high density polyethylene (HDPE), and enhancement layer 2 is the glass fibers being wrapped on liner layer 1
Dimension, external protection 3 is the polyethylene being coated on enhancement layer 2.Male adapter by composite coiled tubing liner layer 1, convex metallic
The composite material three parts of interior inlay 4 and glass fibre and thermosetting resin are constituted.The liner layer 1 is high density polyethylene (HDPE),
4 material of inlay is 1Cr13 martensitic stain less steels in convex metallic, is processed on inlay in 1Cr13 martensitic stain less steel convex metallics
There are three equally distributed annular protrusion, the manufacturing process of male adapter is synchronized with composite coiled tubing tube body production (winding) process
It is carried out continuously, in 1 end of high density polyethylene (HDPE) liner layer of composite coiled tubing tube body installation 1Cr13 martensitic stain less steels convex surface gold
In belonging to after inlay, and pair 1 end of high density polyethylene (HDPE) liner layer being connected with inlay in convex metallic thicken at flange
Reason in mounted 1Cr13 martensitic stain less steels convex metallic on inlay and on tube body enhancement layer 2, winds glass fibre
With the composite material of epoxy resin, wherein epoxy resin according to the mass fraction, including 100 parts of 6207 epoxies, 647 acid anhydrides 138
Part, 1.5 parts of dimethylaniline, 8 parts of liquid butyronitrile and 8 parts of acetone, winding angle are 75 °, solid at 85 DEG C after the completion of winding
Change 12 hours, completes；Female adapter manufacture craft is identical as male adapter.
The concave surface that the male adapter of one composite coiled tubing continues pipe with another compound even composite coiled tubing male adapter connects
Head is fastenedly connected by bolt 9, and when connection encrypts seal, realizes whole pipeline connection.Verification test has been carried out after connection, has been tested
Hydrostatic test and gas leakage test when content includes long.The pressure value of hydrostatic pressing is 39MPa, pressurize 24 hours, pipe when long
Body and joint do not leak.The gas pressure value of air seal experiment is 33MPa, pressurize 8 hours, tube body and joint
It does not leak.
Claims (10)
1. a kind of jointing of fiber reinforced thermoplastics composite coiled tubing, which is characterized in that multiple first including setting
It closes the male adapter of continuous pipe tube body end and the female adapter in the second composite coiled tubing tube body end, male adapter is set
It is matched with female adapter, wherein the male adapter includes inlay in convex metallic (4)；First composite coiled tubing tube body with
Second composite coiled tubing pipe structure is identical, and the first composite coiled tubing tube body includes liner layer (1), is wrapped up on the outside of liner layer (1)
There is enhancement layer (2), external protection (3) is enclosed on the outside of enhancement layer (2)；Inlay (4) is sleeved on the first compound company in convex metallic
The end of the liner layer (1) of continuous pipe tube body, the external protection (3) of inlay (4) and the first composite coiled tubing tube body in convex metallic
Outside is provided with the composite material of fiber and thermosetting resin；Female adapter includes matched with inlay in convex metallic (4)
Inlay (7) in concave metallic, inlay (7) is arranged in the end of the liner layer (1) of the second composite coiled tubing tube body in concave metallic,
In concave metallic fiber and thermosetting property tree are provided on the outside of the external protection (3) of inlay (7) and the second composite coiled tubing tube body
The composite material of fat.
2. a kind of jointing of fiber reinforced thermoplastics composite coiled tubing according to claim 1, feature exist
In inlay (4) includes convex surface ontology (11) in convex metallic, and convex surface ontology (11) end set has convex surface shoulder (12), convex surface
Several annular protrusions (5) are provided on ontology (11) outer wall；Inlay (7) includes concave surface ontology (13), concave surface in concave metallic
Ontology (13) end set has concave surface shoulder (14), concave surface shoulder (14) to match with convex surface shoulder (12).
3. a kind of jointing of fiber reinforced thermoplastics composite coiled tubing according to claim 2, feature exist
In annular protrusion (5) and the annular protrusion (5) on concave surface ontology (13) of convex surface ontology (11) are 3~5；Convex surface ontology
(11) annular protrusion (5) equal spaced set and on concave surface ontology (13), and between two neighboring annular protrusion (5) away from
From for 40~60mm.
4. a kind of jointing of fiber reinforced thermoplastics composite coiled tubing according to claim 2, feature exist
In away from offering several on the farthest annular protrusion of convex surface shoulder (12) for changing composite material on convex surface ontology (11)
The groove of winding direction and angle；There is several the annular protrusion edge farthest away from concave surface shoulder (14) on concave surface ontology (13)
It is a for changing the winding direction of composite material and the groove of angle.
5. a kind of jointing of fiber reinforced thermoplastics composite coiled tubing according to claim 2, feature exist
In convex surface shoulder (12) is circumferentially uniformly provided with several screw holes (6), and concave surface shoulder (14) is circumferentially uniformly provided with several screw holes
(6), by passing through the bolt of the screw hole (6) on concave surface shoulder (14) and convex surface ontology (11) by male adapter and female adapter phase
Even.
6. a kind of jointing of fiber reinforced thermoplastics composite coiled tubing according to claim 5, feature exist
In sealing ring is arranged between convex surface shoulder (12) and concave surface shoulder (14).
7. a kind of jointing of fiber reinforced thermoplastics composite coiled tubing according to claim 1, feature exist
In the angle of the Filament Wound Composite of fiber and thermosetting resin is 65 °~85 °, and the thickness of winding is 8~50mm.
8. a kind of connection method of connector as described in claim 1, which is characterized in that the manufacturing process of male adapter is the same as compound
Continuous pipe tube body production process, which synchronizes, to be carried out continuously, and convex metallic is installed on liner layer (1) end of the first composite coiled tubing
After interior inlay (4), pair liner layer (1) end being connected with inlay in convex metallic (4) carries out thickening flange processing, then adopts
With with the continuous fiber of enhancement layer (2) and thermosetting resin it is compound after in composite coiled tubing tube body and convex metallic inlay (4)
Upper winding makes inlay in convex metallic (4) be placed in completely among the composite material of fiber and thermosetting resin, convex surface after solidification
Connector completes, while wrapping up enhancement layer (2) and external protection (3) successively on liner layer (1)；
The manufacturing process of female adapter is synchronized with composite coiled tubing tube body production process and is carried out continuously, in the second composite coiled tubing
It is installed on liner layer (1) end in concave metallic after inlay (7), pair liner layer (1) being connected with inlay in concave metallic (7)
End carries out thickening flange processing, then use with the continuous fiber of enhancement layer (2) and thermosetting resin it is compound after in compound company
It is wound on inlay (7) in continuous pipe tube body and concave metallic, inlay in concave metallic (7) is made to be placed in fiber and thermosetting property tree completely
Among the composite material of fat, solidification back concave surface connector completes, at the same wrap up successively on liner layer (1) enhancement layer (2) and
External protection (3)；Male adapter is connected with female adapter using bolt.
9. connection method according to claim 8, which is characterized in that the Filament Wound Composite of fiber and thermosetting resin
Angle is 65 °~85 °, and the thickness of winding is 8~50mm；The material of inlay (4) is steel in convex metallic.
10. connection method according to claim 8, which is characterized in that the composite material of fiber and thermosetting resin passes through
It is prepared by following procedure：Fiber impregnation is made in thermosetting resin；Wherein, fiber is glass fibre, carbon fiber, basalt fibre
Dimension, polyester fiber or aramid fiber；Thermosetting resin is epoxy resin, unsaturated polyester resin or vinyl ester resin.
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| CN201810387832.1A CN108561660B (en) | 2018-04-26 | 2018-04-26 | Connection joint and method for fiber reinforced thermoplastic composite continuous pipe |
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| CN201810387832.1A CN108561660B (en) | 2018-04-26 | 2018-04-26 | Connection joint and method for fiber reinforced thermoplastic composite continuous pipe |
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| CN108561660B CN108561660B (en) | 2024-05-28 |
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| CN108561660B (en) | 2024-05-28 |
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