CN207279143U - A kind of seabed fiber-reinforced composite flexible pipe combined type buckle arrestor - Google Patents

Abstract

The utility model discloses a kind of fiber-reinforced composite flexible pipe combined type buckle arrestor, including metal-coating ring and fiber reinforcement inner sleeve, and the metal-coating ring includes the main lantern ring, the locking lantern ring and elastic packing packing ring；The fiber reinforcement inner sleeve includes fabric reinforcement and matrix protective layer；Fiber reinforcement inner sleeve is located at the outside of multiple tube and therewith hot melting cohesion, equivalent to by pipeline partial thickening to realize the lifting of anti-flexion capabilities；Metal-coating ring is coated on the outside of fiber reinforcement inner sleeve by interference fit, can auxiliary fiber enhancing inner sleeve realize anti-bend function, it can prevent multiple tube from excessive bending occur by the preferable anti-deformation of metal-coating ring at the same time, to reduce the stress concentration of fiber reinforcement inner sleeve.The advantages of the utility model rationally realizes the processing of fiber reinforcement inner sleeve using the bonding characteristic of multiple tube material, and auxiliary metal-coating ring is to increase partial structurtes intensity, have steel-pipe welding formula and attaching type buckle arrestor concurrently, has extensive popularization and practical value.

Description

A kind of seabed fiber-reinforced composite flexible pipe combined type buckle arrestor

Technical field

Ocean fiber enhancing composite and flexible pipe auxiliary part technical field is the utility model is related to, is applied more particularly to one kind In oil or the Deep-sea high voltage fiber-reinforced composite flexible pipe combined type buckle arrestor of water conveying.

Background technology

Marine oil and gas industry is just towards deeper waters, worse transportation environment, more complicated mounting condition and more Field is widely applied, the material property of Conventional marine steel pipe embodies all the more deficiency, including its corrosion resistance, and weight is flexible Etc. performance hinder to its further application and development.To overcome these defects to occur a variety of application plastics materials in succession The novel sea pipeline of material, and the most widely used for fine using thermoplasticity made of thermoplastic coating plastic Fiber Winding Dimension enhancing bonds multiple tube (RTP), and fiber-reinforced layer passes through hot melt to RTP tube with inside and outside plastic substrate protective layer in process of production Bonding becomes an entirety, has the advantages that anti-internal pressure capability height, light weight, resistance to corrosion are strong, endurance.

Whether fiber-reinforced composite flexible pipe or steel pipe pipe, at it during one's term of military service, due to touching for other objects Hit cause local pit defect, local buckling caused by the overbending in the case where installation process or overload are on active service and abrasion it is rotten The reduction of local wall thickness caused by erosion can all cause the decrease of the local anti-flexural property of pipeline, cause pipeline that local buckling pressure occurs Burst.Since buckle propagation pressure is less than local buckling pressure, once local buckling conquassation occurs, flexing will be along duct length Direction is propagated at a high speed, may finally be destroyed whole pipeline, be caused huge economy, ecological hazard.Buckling problem master is solved at present If by way of designing and installing buckle arrestor, existing buckle arrestor is configured primarily directed to steel pipe, and is rarely had and be directed to The buckle arrestor of multiple tube design.

Steel pipe buckle arrestor is broadly divided into welded type buckle arrestor, addition type buckle arrestor, wound form according to the difference of connection mode Buckle arrestor and interior ring type buckle arrestor.Welded type buckle arrestor is connected integral, anti-bend by fine welding and its both ends pipeline Effect is fine, and suitable for the seabed steel pipe of the middle depth of water and the big depth of water, shortcoming is easy generation weld defect and stress concentration, and is welded Technological requirement is very high, it is necessary to take certain way to overcome stress concentration when connecing；Addition type buckle arrestor is fixed by being interference fitted On the outside of pipeline, prevent buckle arrestor from sliding using frictional force, it is not necessary to welded, it is easy for installation, cost is low, by increasing capacitance it is possible to increase pipe The hoop rigidity in road, but anti-bend is less efficient, pipeline therein may occur U-shaped to pass through phenomenon；Wound form buckle arrestor is Uniformly and a few reinforcing rods closely are wound according to certain angle in steel tube surface, to substitute the thick ring for buckling into formula buckle arrestor Set, can equally improve the rigidity of pipeline circumferential direction, both ends and the pipeline of reinforcing rod weld together, to fix buckle arrestor in pipeline Position, anti-sliding stop, its simple structure, expense easy for installation is low, has less bending stiffness, will not generally produce bending Stress concentration point, and shortcoming is that anti-bend is inefficient, intensity is less than normal compared with other buckle arrestors；Interior ring type buckle arrestor is also a circle Ring set, is mainly used for tube-in-tube.

From the point of view of use environment, the application conditions of fiber-reinforced composite flexible pipe are more complicated, to bear bigger bending, Across the suspended span distance of longer pipe, particularly in submarine laying, complicated topography is for the weaker multiple tube of lateral performance Huge test is generated, fiber-reinforced composite flexible pipe is likely to that flexing occurs in whole service life, and flexing can cause The consequences such as fiber failure, MATRIX CRACKING, plastic yielding or the layering of multiple tube；At present, it is not high for small-bore and application conditions Multiple tube, the appropriate pipeline wall thickness that increases particularly strengthens layer thickness, can suppress pipeline flexing to a certain extent, but for big The outer high pressure at caliber pipe, complicated use condition and deep-sea, for prevent flexing occur and significantly thickened wall do not meet through Ji requires, and to sum up considers, disposes buckle arrestor to become more reasonably settling mode, it is necessary to choose a kind of suitable anti-bend for multiple tube Device form.

For steel pipe, the performance difference of its different directions is little.Different from steel pipe, since fiber reinforcement is answered The material property and architectural characteristic for closing flexible pipe have larger difference with steel pipe, and particularly multiple tube is in circumferential and radial direction performance With axial property there are relatively big difference, therefore steel pipe buckle arrestor can not be used directly on fiber-reinforced composite flexible pipe.Never Consider on same buckle arrestor, direct welding can not be realized for the preferable welded type buckle arrestor of steel pipe anti-bend effect and multiple tube； Addition type buckle arrestor must first ensure that the interference with tube body is connected, and otherwise anti-bend efficiency is very low, and the significantly bending of multiple tube is held Stress concentration easily is caused in addition type buckle arrestor marginal position, it is weaker plus the radial performance of multiple tube, easily form tube body Large deformation, conquassation and cracking；The reinforcing rod of wound form buckle arrestor can not realize the welding with tube body, cannot coordinate shape with multiple tube It is effective overall into one.So, it would be highly desirable to propose that a kind of buckle arrestor specifically for multiple tube exists in the prior art to overcome The defects of.

Utility model content

The technical problem to be solved by the utility model is to stop for no in the prior art for what multiple tube was applicable in Device is bent, then there are the defects of anti-bend efficiency is low, poor structural reliability according to steel pipe buckle arrestor, there is provided a kind of seabed fiber increases The effective combined type buckle arrestor of strong composite and flexible, does not cause composite pipe body while buckle arrestor anti-bend efficiency is lifted damage and its He fails.

The utility model is realized using following technical solution：A kind of seabed fiber-reinforced composite flexible pipe combination Formula buckle arrestor, composite and flexible pipe include external protection, enhancement layer and liner layer successively from outside to inside, and combined type buckle arrestor includes fibre Dimension enhancing inner sleeve and metal-coating ring, the fiber reinforcement inner sleeve are arranged on the outside of composite and flexible pipe enhancement layer, and with Composite and flexible pipe enhancement layer hot melting cohesion；The metal-coating ring is arranged on the outside of fiber reinforcement inner sleeve, and and fiber reinforcement Inner sleeve is interference fitted.

Further, the metal-coating ring includes the main lantern ring and the locking lantern ring, and the main lantern ring is a cylindrical sleeve, The protruding ring that main lantern ring one end inner wall is equipped with, is machined with internal thread on other end inner wall；The locking lantern ring is arranged on processing Between having the main lantern ring and the composite and flexible pipe of internal thread one end, and it is connected with main collar thread, i.e. the outer surface in the locking lantern ring It is machined with and the main matched external screw thread of lantern ring internal thread.

Further, the fiber reinforcement inner sleeve is by heating winding technology manufacture in composite and flexible pipe enhancement layer appearance Face simultaneously bonds therewith, and the fiber reinforcement inner sleeve includes fabric reinforcement and matrix protective layer, and fabric reinforcement is similar to compound Flexible pipe enhancement layer, to the tube-in-tube structure that is wound of mistake, and the species of fiber band, to be twined after fiber band preimpregnation hot melt matrix liquid It is not limited around angle, layer density etc., matrix protective layer basis material is identical with composite and flexible pipe covering basis material, fine Dimension material can be the same or different；Fabric reinforcement is covered and is bonded on the outside of composite and flexible pipe enhancement layer, matrix protection Layer is covered and is bonded on the outside of fabric reinforcement, and is bonded with composite and flexible pipe covering, and soaking is fusible between each adjacent layer Tie and do not stay gap, make fiber reinforcement inner sleeve and composite and flexible pipe clinkering integral.

Further, the fiber reinforcement inner sleeve both ends are respectively by a transition conical surface transition to composite and flexible pipe, and Protruding ring and the locking lantern ring uniformly match with the transition conical surface, for example the section of protruding ring and the locking lantern ring can be right angle ladder Shape, to be engaged with the transition conical surface gradient, after will locking between the main lantern ring of lantern ring screw-in and composite and flexible pipe, locks the lantern ring Front end inclined-plane, the rear end inclined-plane of protruding ring and transition scalene cone coordinate, and fiber reinforcement inner sleeve is clamped, is locked in centre.

Further, the thickness of the fabric reinforcement is not less than the thickness of composite and flexible pipe enhancement layer, matrix protective layer Thickness be not less than composite and flexible pipe covering thickness, basis material is consistent with fabric reinforcement basis material, matrix guarantor The length of sheath is consistent with fabric reinforcement length, bonds to form a complete sleeve with fabric reinforcement.

Further, elastic packing packing ring, the elasticity are additionally provided with the protruding ring inner wall and locking lantern ring inner wall Seal washer uses high density rubber ring, with protruding ring and locking lantern ring bonding connection, and the thickness of elastic packing packing ring will More than the gap thickness between main lantern ring protruding ring and the locking lantern ring and composite and flexible pipeline, therefore installed in metal-coating ring Afterwards, elastic packing packing ring is extruded and interference deformation occurs, and can form good sealing effect.

Further, the main lantern ring internal diameter is slightly less than fiber reinforcement inner sleeve outside diameter, and protruding ring internal diameter is more than compound soft Property pipe outside diameter.

Further, the length of the main lantern ring is more than the length of fiber reinforcement inner sleeve.

Further, the main lantern ring is made of two symmetrical sections for semicircular saddle plate, two saddle plate side hinges Connect, opposite side is bolted, and directly outward buckle can compress fiber reinforcement inner sleeve, the internal thread on saddle plate is intercommunication, connection The main lantern ring afterwards has complete threaded pathway.

Further, the locking lantern ring is spliced to form by two semicircular rings, and is provided with two semicircular ring outer surface The external screw thread of intercommunication, the locking lantern ring outer wall of splicing have complete threaded pathway, can be screwed into along the main lantern ring in it Portion.

Compared with prior art, it is the advantages of the utility model with good effect：

The utility model proposes the effective combined type buckle arrestor of composite and flexible, including fiber reinforcement inner sleeve and metal-coating Ring：

Fiber reinforcement inner sleeve is set first outside the tube body for peel off external protection, and fiber reinforcement inner sleeve passes through with tube body Hot melting cohesion is integral, wherein the winding fabric reinforcement of similar enhancing Rotating fields is used for the local hoop rigidity of riser tubing, The partial thickening of composite and flexible tube layer can be regarded after being bonded with pipeline enhancement layer as, ensure that buckle arrestor pipeline section is kept with other pipeline sections The performance of structure section is consistent, does not weaken other performance (stretchings of pipeline while effectively improving the anti-flexural property of pipeline Performance, anti-internal pressure performance etc.), equivalent to the welded type buckle arrestor of steel pipe；From localized design, the fiber kind of fabric reinforcement Class, density, winding angle etc. can could be adjusted to strengthen anti-flexural property according to pipeline actual requirement, have very high spirit Activity；The gentle stress distribution of the conical surface transition at fabric reinforcement both ends, prevents the stress concentration of changeover portion；Matrix protective layer has Effect ground protection fabric reinforcement, prevents its structure to be worn and corrode.

The metal-coating ring being coated on the outside of fiber reinforcement inner sleeve, it may have the effect of anti-bend, by withhold to be formed with The interference fit of fiber reinforcement inner sleeve, further increases buckle arrestor hoop rigidity, and is overcome by the rigidity of hardware The bending of buckle arrestor segment pipe to reduce local buckling stress, while also protect laying in easily caused because of local protrusion Degree abrasion and the fiber reinforcement inner sleeve destroyed, play booster action well, similar to the attaching type buckle arrestor of steel pipe.

From localized design, first, the setting of elastic packing packing ring overcome fiber reinforcement inner sleeve with outside metal The problem of being easily worn at the non-interference section of the lantern ring, also possesses the function of sealing, prevents internal interference section from causing after being corroded The mutation of structure and its performance；Second, the setting of the left and right transition conical surface is also rational, is on the one hand to strengthen with condensating fiber The conical surface transition at layer both ends, on the other hand, by the interference fit of the conical surface by metal-coating ring axial restraint, it is not necessary to increase to fiber Strong overcoat ring outer surface forms excessive over pressure and rubs spacing to utilize, this design take into account composite and flexible caliber tropism The deficiency of energy, will not make buckle arrestor segment pipe that excessive radial deformation occur；3rd, even if because uncontrollable factor causes outside metal The lantern ring is excessive to the over pressure of fiber reinforcement inner sleeve, because the buckle press of metal collar is acted only on inner sleeve, herein Local stiffness strengthens the radial-deformation that can effectively reduce pipeline；4th, metal-coating ring divides half structure with the locking lantern ring The installation and removal of buckle arrestor are facilitated, the design for locking the lantern ring is facilitated and matched somebody with somebody between metal-coating ring and fiber reinforcement inner sleeve The adjustment of conjunction degree.

In short, fiber reinforcement inner sleeve and metal-coating ring are combined by the utility model, similar to by steel-pipe welding formula The combination of two kinds of buckle arrestors of buckle arrestor and attaching type buckle arrestor.Taking into full account that the practical structures of composite and flexible pipe and material are special The factors such as point, application conditions, after analyzing the deficiency of each buckle arrestor and rationally utilizing its advantage, design new-type combined type and stop Device is bent, considerably increases the anti-bend efficiency of composite and flexible pipe.

Brief description of the drawings

Fig. 1 is combined type buckle arrestor overall structure diagram described in the utility model embodiment；

Fig. 2 is combined type buckle arrestor structural blast schematic diagram described in the utility model embodiment；

Fig. 3 is combined type buckle arrestor diagrammatic cross-section described in the utility model embodiment.

Embodiment

In order to which the above-mentioned purpose of the utility model, feature and advantage are more clearly understood, below in conjunction with the accompanying drawings and Embodiment is described further the utility model.It should be noted that in the case where there is no conflict, embodiments herein and Feature in embodiment can be mutually combined.

The present embodiment discloses a kind of seabed fiber-reinforced composite flexible pipe combined type buckle arrestor, for convenience of describing, below Flexible pipe will be met and be referred to as multiple tube, referring to figs. 2 and 3 multiple tube 1 includes external protection 11, enhancing successively from outside to inside Layer 12 and liner layer 13, combined type buckle arrestor includes fiber reinforcement inner sleeve 2 and metal-coating ring 3, described with reference to shown in Fig. 3 Fiber reinforcement inner sleeve 2 includes fabric reinforcement 21 and matrix protective layer 22, the structure and manufacture method of fabric reinforcement 21 with The enhancement layer 12 of multiple tube 1 is similar, is made of the fiber band of the thermoplastic matrix of pre- dipped heating melting through machine winding. Fabric reinforcement 21 is covered in the surface of enhancement layer 12, is thickeied equivalent to enhancement layer 12, considers jacket layer in fiber reinforcement Hoop rigidity enhancing effect, after the factor such as radial deformation performance, pipe load, set thickness as enhancement layer 100% arrives 120%, fiber band laying density (mass ratio), Fiber Winding angle can be differently configured from enhancement layer 12, be specifically dependent upon difference Requirement under application conditions and the tube body of environmental condition to anti-bend.Described matrix protective layer 22 is to cover and be bonded in fiber reinforcement The protective layer of 21 outer surface of layer, similar to the external protection 11 of multiple tube 1, basis material is same, and thickness is external protection The 100% to 120% of 11, has water proof, anti-corrosion, the effect of abrasionproof.

Corresponding, the both ends of fabric reinforcement 21 are to be no more than 45 ° to the thin transition conical surface 23, its cone angle by thick, added Man-hour makes the conical surface keep smooth as far as possible, while matrix protective layer 22 is also equably covered on the conical surface.Fabric reinforcement 21 and base Body protective layer 22, enhancement layer 12, between matrix protective layer 22 and external protection 11 by identical material matrix hot melting cohesion and Gap is not stayed, makes fiber reinforcement inner sleeve 2 and 1 clinkering of multiple tube integral.

The metal-coating ring 3 includes the main lantern ring 31 and the locking lantern ring 32, and metal-coating ring 3 is coated on fiber reinforcement inner sleeve The outer surface of ring 2, plays the role of increasing buckle arrestor intensity and resists pipe bending.The main lantern ring 31 is a metallic cylinder, It is preferred that steel material, its length is slightly larger than the length of fiber reinforcement inner sleeve 2, and ratio is about 110%-115%.Its inner wall both ends There is special processing：One end is provided with protruding ring 33 by a transition conical surface, and the internal diameter of protruding ring 33 is more than the outer of multiple tube 1 Footpath, and protruding ring 33 and 23 profile of the transition conical surface of fabric reinforcement 22 match；Other end inwall processing has internal thread 34.It is main The internal diameter of the lantern ring 31 is slightly less than the outside diameter of fiber reinforcement inner sleeve 2, therefore the main lantern ring 31 produces Interference contact after buckling into.The lock Fixed ring 32 is trapezoidal annulus for a section, and material is consistent with the main lantern ring 31, its internal diameter is more than outer tube diameter, and external process has External screw thread, agrees with main 34 phase of lantern ring internal thread.It is circular conical surface to lock 32 front end face of the lantern ring, with 23 match profiles of the transition conical surface Close.In addition elastic packing packing ring 35, the elastic packing packing ring are both provided with the inner wall of the locking lantern ring 32 and protruding ring 33 35 shapes are a thin wall circular, and material is high-strength rubber, it is desirable to the rubber has the more fatigue proof performance of waterproof anti-corrosion, its Thickness is more than the difference of main 31 protruding ring of the lantern ring, 35 internal diameter and 1 outside diameter of multiple tube, and locking 32 internal diameter of the lantern ring and 1 outside diameter of multiple tube Difference, it is therefore an objective to be extruded more than between two structure intervals and produce certain initial interference, to play protection tube body, disperseing should Power and the effect of damping.

For convenience of installation, the main lantern ring 31 is designed to that two sections are semicircular saddle plate, the side (A of two saddle plates Side) it is hinged, opposite side (B sides) forms a complete main lantern ring, the place of being bolted is radially projecting strip by being bolted Flanged plate 36, is threaded hole 37 thereon.After the docking of two saddle plates, respective spiral shell of same position while two eye plates 36 are close to Pit 37 also aligns.The locking lantern ring 32 can be processed into two symmetrical semicircular rings, outside the locking lantern ring 32 of semicircular ring splicing Surface forms complete external screw thread, can dock main lantern ring internal thread 34.

For the combined type buckle arrestor described in the present embodiment, specifically when in use, the fiber reinforcement inner sleeve can be adopted It is configured with various ways, the external protection of multiple tube can be peelled off and be configured, can also be in pipeline manufacturing process, directly Connect and be arranged on the outside of the multiple tube enhancement layer for not preparing external protection also.Choose buckle arrestor position first, designated position according to Certain angle two-way winding fiber prepreg winding band, until fabric reinforcement reaches appointed thickness, in process, makes every layer Winding beginning and end it is different, so that the both ends of fabric reinforcement are processed into the transition conical surface, made after matrix cooled and solidified Into fabric reinforcement；Matrix protective layer is equably processed on the outside of fabric reinforcement afterwards, and makes matrix protective layer and multiple tube Equal hot melting cohesion and not between external protection, matrix protective layer and fabric reinforcement and fabric reinforcement and multiple tube enhancement layer Gap is stayed, makes fiber reinforcement inner sleeve and multiple tube clinkering integral.

After the completion of the preparation of fiber reinforcement inner sleeve, first the main lantern ring for setting elastic packing packing ring is withheld and is increased in fiber On the outside of strong inner sleeve, and the main lantern ring protruding ring transition conical surface is set to be close to the fiber reinforcement inner sleeve transition conical surface by slightly movement, Holding structure position blending bolt pins the main lantern ring；Then make threaded pathway complete locking lantern ring docking and place elastic close Seal washer, then the locking lantern ring is screwed between the main lantern ring and multiple tube, until locking lantern ring front end face and fiber reinforcement inner sleeve The transition conical surface fits closely and produces certain interference, finally locks screw thread, completes whole installation process, at this time metal-coating ring Interference contact is produced to fiber reinforcement inner sleeve and limits axial displacement, its overall structure diagram is as shown in Figure 1.

The combined type buckle arrestor that the utility model embodiment proposes, the fiber reinforcement inner sleeve is that same multiple tube is bonded as The structure of one, local strength's particularly hoop rigidity for riser tubing, can regard the part of enhancement layer, buckle arrestor as Pipeline section is consistent with the performance of other pipeline section holding structure sections, and the anti-flexural property for effectively improving pipeline while does not weaken pipe Other performances in road.In fiber reinforcement inner sleeve, the kinds of fibers of fabric reinforcement, density, winding angle etc. can be according to It could be adjusted to strengthen anti-flexural property according to pipeline actual requirement, there is very high flexibility；The conical surface at fabric reinforcement both ends The gentle stress distribution of transition, prevents the stress concentration of changeover portion；Matrix protective layer effectively protects fabric reinforcement.

To make up some shortcomings occurred after fiber reinforcement outer sleeve is set, add outside metal-coating ring and fiber reinforcement The lantern ring is engaged, and metal-coating ring also has the effect of anti-bend, by withholding the interference fit to be formed with fiber reinforcement inner sleeve, Interior external pressure load suffered by fiber-reinforced layer rationally has been shared, has further increased buckle arrestor hoop rigidity, and pass through hardware Rigidity overcome the bending of buckle arrestor segment pipe to reduce local buckling stress, while also protect laying in because of local protrusion and Easily cause excessive wear and the fiber reinforcement inner sleeve destroyed, play booster action well.The presence of metal-coating ring, The integral strength of buckle arrestor is added, smart structural design is reasonable.

In metal-coating ring, the setting of elastic packing packing ring overcome fiber reinforcement inner sleeve with metal-coating ring The problem of being easily worn at non-interference section, also possesses the function of sealing；On the one hand the transition conical surface in left and right coordinates fabric reinforcement The conical surface transition at both ends, on the other hand by the interference fit of the conical surface by metal-coating ring axial restraint, it is not necessary to fiber reinforcement Overcoat ring outer surface forms excessive over pressure and rubs spacing to utilize, this design take into account multiple tube radial performance not Foot, will not make buckle arrestor segment pipe that excessive radial deformation occur；Because the buckle press of metal collar is acted only in fiber reinforcement On the lantern ring, and intensity of the pipeline section with fiber reinforcement inner sleeve with higher come bear metal-coating latch closure pressure zone come radial direction Deformation；Point half structure of metal-coating ring and the locking lantern ring facilitates the installation and removal of buckle arrestor, locks the design side of the lantern ring The adjustment of degree of cooperation between metal-coating ring and fiber reinforcement inner sleeve.

The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent The equivalent embodiment of change is applied to other fields, but every without departing from the content of the technical scheme of the utility model, according to this reality Any simple modification, equivalent variations and the remodeling made with new technical spirit to above example, it is new to still fall within this practicality The protection domain of type technical solution.

Claims (10)

1. a kind of seabed fiber-reinforced composite flexible pipe combined type buckle arrestor, composite and flexible pipe includes outer guarantor successively from outside to inside Sheath, enhancement layer and liner layer, it is characterised in that combined type buckle arrestor includes fiber reinforcement inner sleeve and metal-coating ring, institute State the outside that fiber reinforcement inner sleeve is arranged on composite and flexible pipe enhancement layer, and with composite and flexible pipe enhancement layer hot melting cohesion；Institute State metal-coating ring to be arranged on the outside of fiber reinforcement inner sleeve, and be interference fitted with fiber reinforcement inner sleeve.

2. combined type buckle arrestor according to claim 1, it is characterised in that：The metal-coating ring includes the main lantern ring and lock Fixed ring, the main lantern ring are a cylindrical sleeve, and main lantern ring one end inner wall is equipped with protruding ring, is machined with other end inner wall Internal thread；It is described locking the lantern ring be arranged between the main lantern ring and the composite and flexible pipe for being machined with internal thread one end, and with the main lantern ring It is threadedly coupled.

3. combined type buckle arrestor according to claim 2, it is characterised in that：The fiber reinforcement inner sleeve adds including fiber Strong layer and matrix protective layer, fabric reinforcement are covered and are bonded on the outside of composite and flexible pipe enhancement layer, and matrix protective layer covers simultaneously It is bonded on the outside of fabric reinforcement, and is bonded with composite and flexible pipe covering, fiber reinforcement inner sleeve and composite and flexible pipe heat Fusible knot is integral.

4. combined type buckle arrestor according to claim 3, it is characterised in that：The fiber reinforcement inner sleeve both ends lead to respectively A transition conical surface transition is crossed to composite and flexible pipe, and protruding ring and the locking lantern ring are engaged with the transition conical surface.

5. combined type buckle arrestor according to claim 3, it is characterised in that：The thickness of the fabric reinforcement is not less than multiple The thickness of flexible pipe enhancement layer is closed, the thickness of matrix protective layer is not less than the thickness of composite and flexible pipe covering, matrix protection The length of layer is consistent with fabric reinforcement length.

6. combined type buckle arrestor according to claim 4 or 5, it is characterised in that：The protruding ring inner wall and the locking lantern ring Elastic packing packing ring is additionally provided with inner wall, the elastic packing packing ring uses high density rubber ring.

7. combined type buckle arrestor according to claim 6, it is characterised in that：The main lantern ring internal diameter is slightly less than fiber reinforcement Inner sleeve outside diameter, protruding ring internal diameter are more than composite and flexible pipe outside diameter.

8. combined type buckle arrestor according to claim 7, it is characterised in that：The length of the main lantern ring is more than fiber reinforcement The length of inner sleeve.

9. combined type buckle arrestor according to claim 8, it is characterised in that：The main lantern ring is by two symmetrical sections Semicircular saddle plate composition, the side of two saddle plates are hinged, and opposite side is bolted.

10. combined type buckle arrestor according to claim 9, it is characterised in that：The locking lantern ring is spelled by two semicircular rings Connect to be formed, and the external screw thread of intercommunication is provided with two semicircular ring outer surface.