CN107044572A - A kind of effective precompressed of ocean composite and flexible is from tight coupling - Google Patents

A kind of effective precompressed of ocean composite and flexible is from tight coupling Download PDF

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Publication number
CN107044572A
CN107044572A CN201710480640.0A CN201710480640A CN107044572A CN 107044572 A CN107044572 A CN 107044572A CN 201710480640 A CN201710480640 A CN 201710480640A CN 107044572 A CN107044572 A CN 107044572A
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China
Prior art keywords
ring
outer sleeve
axe
cambridge
inner pressure
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CN201710480640.0A
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CN107044572B (en
Inventor
王树青
陈天舒
李华军
姚潞
孙肖菲
张常友
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Ocean University of China
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Ocean University of China
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/02Hose-clips
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/02Hose-clips
    • F16L33/10Hose-clips with a substantially-radial tightening member

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)

Abstract

The present invention discloses a kind of effective precompressed of ocean composite and flexible from tight coupling, including outer sleeve, cambridge ring, retaining ring, axe profile shaft and inner pressure ring;The outer sleeve is set on the outside of cambridge ring, and is provided with seal between outer sleeve and cambridge ring, and the front end of the outer sleeve is taper, and the rear end of outer sleeve is threadedly coupled with retaining ring;Retaining ring is arranged between outer sleeve and axe profile shaft;Described axe profile shaft one end is connected with cambridge ring, and the other end is connected with ring flange;The inner pressure ring is arranged on joint innermost layer, and the rear end of inner pressure ring is fixedly connected with axe profile shaft inwall, and there is the space for accommodating flexible pipe with wedge-shaped interannular, extrudes to form clamping force restriction conduit displacement with cambridge ring;The present invention uses mechanical compaction mode, by being assembled to form and locking precompression, can increase the effect of pipeline compression under external load;Structural strength is high, performance is good, using easy to operate, the use environments such as deep-sea, high temperature, high pressure is can apply to, with extensive promotional value and practical value.

Description

A kind of effective precompressed of ocean composite and flexible is from tight coupling
Technical field
It is specifically related to a kind of defeated applied to oil or water high pressure the present invention relates to ocean composite and flexible pipe joint technical field The flexible Pipe joint of novel sea fiber-reinforced composite sent, the end for strengthening composite and flexible pipe is connected.
Background technology
In ocean engineering thermoplastic composite enhancing flexible pipe joint field, for flexible reinforced compound pipeline complex pipeline, due to The progress of its material and the lifting of preparation technology, the use bore of such pipeline and are gradually increased, application conditions using the depth of water More severe and complicated, the correspondingly design of butt joint it is also proposed higher requirement.
In early days, the connection mechanism of small-bore reinforced composite pipe be by pipeline and joint design hot melting cohesion, it is but this Mode has a lot of deficiency in intensity and sealing;Subsequent occurrences of joint form is connected by the way of mechanical compaction Connect;It is at most clamped-in style joint to be applied at present in shallow water field, and its position is limited by the pipe layers in the middle of inner-outer sleeve head clamping Move and form connection, can by cold temperature, the various ways connection such as be axially forced to, the structure type can be advantageously applied to osculum The shallow water pipeline in footpath, but it is not suitable for pipeline under the conditions of heavy caliber, high pressure, high vibration.
Joint is mainly by the axial tension from pipeline, bending and twisting action in actual applications, and seawater The internal pressure of external pressure and internal flow, further for mechanical compaction joint, also has initial assembly prestress.Current multiple tube connects Head has problems in that:First, bearing strength problem:The intensity of hot melting connector is very low, and current mechanical compaction joint is multiple Also strength failure easily occurs under miscellaneous loading condition;2nd, sealing property problem:Traditional sealing means are single, sealed reliable Property is not high;3rd, prestressed Preserving problems:Current mechanical compaction joint ensures the spacing of pipeline by prestressing force, but often Under practical circumstances, especially prestressing force loss after fatigue deformation or creep occurs for structure, so that pipeline bearing capacity declines, Sealing property also tends to decline therewith;4th, joint handling problem:Current most of joints are Disposable Connects, are often existed Parts can not be changed after the completion of assembling, it is necessary to which one integral piece is changed;5th, pipeline damage layer problem:The characteristics of compound pipeline complex pipeline, is axle It is big to intensity, and the intensity of radial direction is small, and traditional jointing structure is also easy to produce problem of stress concentration in pipe layers, makes pipeline configuration Destroy;6th, the influence that traditional joint is caused for temperature change is difficult to predict, easily occurs thermal stress failure, Therefore Applicable temperature scope is typically little.
The content of the invention
The technical problems to be solved by the invention are for joint bearing strength described in prior art is poor, prestressing force hardly possible To keep, dismount the defects such as inconvenience, propose a kind of effective precompressed of ocean composite and flexible from tight coupling.
The present invention is realized using following technical scheme:A kind of effective precompressed of ocean composite and flexible is wrapped from tight coupling Include outer sleeve, cambridge ring, retaining ring, axe profile shaft and inner pressure ring;The outer sleeve is set on the outside of cambridge ring, and in outer sleeve and Seal is provided between cambridge ring, the seal is rubber seal or other encapsulants, the front end of the outer sleeve For taper, the rear end of outer sleeve is threadedly coupled with retaining ring, and the screw thread is from the close tolerance seal screw thread for meeting international standard Form, otherwise, it is necessary on screw thread full-filling fluid sealant or oil sealing;Retaining ring is arranged between outer sleeve and axe profile shaft;It is described Axe profile shaft one end is in contact with cambridge ring, and the other end is connected with ring flange, and ring flange is welded to connect with axe profile shaft uiform section, passed through Bolt is connected with the ring flange of another joint, thus lays pipeline;The inner pressure ring is arranged on joint innermost layer, inner pressure ring with Axe profile shaft inwall is fixedly connected, and there is the space for accommodating flexible pipe between cambridge ring, extrudes to form folder with cambridge ring Clamp force restriction conduit displacement.
Further, the outer sleeve is made by steel material, and outer sleeve front opening internal diameter is more than the secondary increasing of flexible pipe Thick section external diameter, its rear end opening inside diameter, which is slightly larger than on axe shape axle maximum outside diameter, outer sleeve rear end inwall, is provided with internal thread, overcoat It is additionally provided with ring front inner wall in arc groove, the arc groove and is provided with elastomer.
Further, the elastomer is made up of high-strength rubber material, and its rear end includes a tympanites portion, the tympanites portion De- to prevent on-slip in embedded arc groove, after the completion of practical set, certain predeformation occurs for elastomer, and it is one that it is actual The sealing gasket of individual rear end overstriking, thickens between section outer wall positioned at outer sleeve front end and flexible duct are secondary, is extruded into certain Deflection, forms sealing herein, while avoiding flexible pipeline from directly touching the metal structure of outer sleeve here, plays slow Punching is acted on, and is additionally operable to offset certain pipe bending stress, is played the effect of transition.
Further, the thickness in the middle part of the inner pressure ring is more than in the thickness at its two ends, the rear end of inner pressure ring and axe profile shaft The connected mode of wall is that interference is connected or is threadedly coupled, and flexible duct inwall is accepted in inner pressure ring front end, extrudes to be formed with cambridge ring Clamping force restriction conduit displacement.
Further, the inner pressure ring leading exterior surface is provided with sandblasting layer or annular knurl, and inner pressure ring leading exterior surface is passed through Blasting treatment or annular knurl processing are crossed to increase the friction between flexible duct inwall, clamping effect is improved.
Further, the cambridge ring is made up of 4-6 block sphenoids, and the thickness of the sphenoid rear end is more than its front end It is brought into close contact between thickness, and adjacent sphenoid, forms a complete cambridge ring.
Further, the rear end of the cambridge ring includes one flat section of portion, there is space between the flat section portion and outer sleeve.
Further, the annular knurl or sandblasting layer of increase friction are provided with the wedge-shaped ring inner surface, its outer surface is relative It is smooth.
Further, the outer surface of the retaining ring is provided with external screw thread, is engaged with outer sleeve internal thread, in retaining ring Footpath is slightly larger than the axle external diameter of axe profile shaft, to be inserted in.
Further, on the inner pressure ring outer wall, on the male cone (strobilus masculinus) of cambridge ring front end, on retaining ring inwall and on ring flange Seal groove is provided with, the seal groove is that section is trapezoidal or semicircular annular groove, can place O-ring seal, O Type seal diameter is more than the depth capacity of annular groove, and where it during contact surface laminating, O-ring seal is deformed being formed Interference fit, increases joint tighness, improves sealing effectiveness.
Compared with prior art, advantages and positive effects of the present invention are:
The ocean multiple tube precompressed that this programme is proposed is from tight coupling, and primary load bearing structure outer sleeve etc. is by high-strength stainless steel Material is made, and its design feature ensure that joint has higher load-carrying properties and fatigue performance, can apply to deep-sea, high temperature, The use environment of high pressure;Whole joint is structure as a whole, and is bonded independent of same pipe surface, can accommodate joint design and multiple Some relative motions between pipe, and the working mechanism with self-tightening are closed, under axial tension, internal pressure, external pressure, Moment all Internal pretension can be increased, increase the restraint to pipeline, it is ensured that structure and the stabilization of pipeline location;Its structure design is directed to Solve in load or combined load lower contact structure function in the stress concentration phenomenon of pipe layers to property, improve inside joint The fatigue performance of pipeline;The sealing design of joint effectively depends on the self-tightening mechanism of structure, with sealing ring sealing and face- The double sealing structure of face contact, under bigger external load effect, contact force increase ensures the lifting of sealing property;It is internal pre- The compression degree of stress and pipeline can at any time by be pressed into axe profile shaft again spinning in and out retaining ring adjust, do not influence pipeline and The overall performance of internal structure, is also convenient for the handling of joint;Its structure is also reliable under temperature load, due to compressing structure Self-tightening mechanism, joint is splendid to the adaptability of temperature change, and the structure micro-strain and relative displacement caused by heating also exists Can be in tolerance range.
When specifically used, to coordinate the design feature of joint, technically pipeline is allowed to have a thickness change in end, can Flexible pipe pipe end enhancement layer processing it is secondary thicken section to increase pipeline strength and rigidity, enhancement layer can also be as requested Adjusting and optimizing machine direction, to be adapted to the structure needs of end assembling.Simultaneously in pipeline and joint transitional region design flexibility body, The problem of stress concentration and abrasion can be effectively reduced, so as to preferably solve when by Complicated Loads and big load action this The problem of region is easily deformed and failed;Inner pressure ring is thickened in crucial central region, at the same using the characteristics of structure by internal pressure The stress of ring is delivered to axe profile shaft region, reduces stress intensity herein, while can change weathered at any time, fatigue or rotten The reinforcing ring of erosion;And joint handling flow is simple, can reuse, component can be subjected to disassembly, cleaning at any time and checked more Change.
Brief description of the drawings
Fig. 1 is joint design schematic diagram described in the embodiment of the present invention;
Fig. 2 is joint design exploded perspective view described in Fig. 1;
Fig. 3 is joint diagrammatic cross-section described in Fig. 1;
Fig. 4 is Fig. 3 center taps and flexible pipe coupling part structural representation;
Fig. 5 is flexible pipe diagrammatic cross-section of the embodiment of the present invention;
Fig. 6 is cambridge ring structural representation of the embodiment of the present invention;
Fig. 7 is the connection diagram of axe shape axle described in the embodiment of the present invention and inner pressure ring and ring flange.
Embodiment
In order to be more clearly understood from the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and implement The present invention will be further described for example.
A kind of effective precompressed of ocean composite and flexible is from tight coupling, with reference to Fig. 1 and Fig. 2, including for clamping limitation flexible pipe 1 Outer sleeve 2, cambridge ring 3 and the inner pressure ring 4 of displacement, and for producing prestressing force and keeping prestressed axe profile shaft 5 and locking Ring 6;As shown in figure 3, the outer sleeve 2 is set in the outside of cambridge ring 3, and it is provided between outer sleeve 2 and cambridge ring 3 sealing Part 31, the seal 31 is rubber seal or other encapsulants, and the front end of the outer sleeve 2 is taper, outer sleeve Rear end is threadedly coupled with retaining ring 6, and otherwise the screw thread 61, is needed from the close tolerance seal thread forms for meeting international standard Will on screw thread full-filling fluid sealant or oil sealing, retaining ring 6 is arranged between outer sleeve 2 and axe profile shaft 5;The axe profile shaft 5 Shoulder the end of shoulder 51 to be in contact with cambridge ring 3, the other end is connected with ring flange 7, ring flange 7 is welded to connect with the uiform section of axe profile shaft 5, lead to Cross bolt to be connected with the ring flange of another joint, thus lay pipeline;The inner pressure ring 4 is arranged on joint innermost layer, internal pressure Ring 4 is fixedly connected with the inwall of axe profile shaft 5, and there is the space for accommodating the end of flexible pipe 1 between cambridge ring 3, is squeezed with cambridge ring 3 Swaging is into clamping force restriction conduit displacement.
In order to coordinate the structure of joint, with reference to Fig. 5, the end lateral wall of flexible pipe 1 is provided with jacket layer and forms secondary increasing Thick section 11, thickens the reinforced joint of section 11 and the join domain rigidity of flexible pipe 1, in order to avoid concentrated stress by the way that enhancement layer is secondary Influence, thickens a bit of length that flexible pipe inner liner end has been pruned in the end of section 11 flexible pipe is secondary, with reference to 12 institute in Fig. 5 Show position;Promote transverse shifting of the cambridge ring 3 along the inwall of tapered jacket ring 2 to produce extruding force with inner pressure ring 4 and compress pipeline Limit its displacement, the initial interference pretightning force produced when being inserted by cambridge ring 3 and inner pressure ring 4 so that cambridge ring 3 it is coarse in Surface fully thickens that section outer surface 11 is contacted, inner pressure ring 4 is fully contacted with inner-walls of duct for 1 two times with flexible pipe, flexible duct by To axial tension, internal pressure and external pressure or bend trend when can drive cambridge ring 3 along the conical inboard wall of outer sleeve 2 move It is dynamic, so that the inwall of cambridge ring 3 more compresses flexible pipe 1, bigger thrust is produced, so that whole joint formation self-tightening.
As shown in figures 1 and 3, described its global shape of outer sleeve 2 is similar to a flanging tapered cylinder, by steel material Make, cylinder front opening internal diameter is secondary more than flexible pipe to thicken the external diameter of section 11, and its rear end opening inside diameter is slightly larger than the axle of axe shape axle 5 It is easy for installation to external diameter.Internal thread is provided with the rear end inwall of outer sleeve 2, as can be seen that its length is omited from Fig. 3 and Fig. 4 It is longer than in the external thread length of retaining ring 6, the front inner wall of outer sleeve 2 and is additionally provided with arc groove 21, to embedded elastomer 8;Institute The thickness that the thickness of 2 conical section of outer sleeve 22 is slightly larger than its flat section 23 is stated, the processing of the inner wall smooth of conical section 22 is polished smooth during processing Reduce friction, can also full-filling lubricant.
Wherein, the high-strength rubber material of elastomer 8 is constituted, and its rear end includes a tympanites portion, the tympanites portion insertion De- to prevent on-slip in arc groove, after the completion of practical set, certain predeformation occurs for elastomer 8, actual for a rear end The sealing gasket of overstriking, between thickening the outer wall of section 11 for 1 two times positioned at the front end of outer sleeve 2 and flexible pipe, rubber elastomer 8 it is initial in Footpath be less than it is secondary thicken the outer diameter tube of section 11, its thickness be more than the front port latus rectum of outer sleeve 2 and flexible pipe 1 herein external diameter it Difference.During installation, tympanites portion is extruded into certain deflection, forms sealing herein, while avoiding the pipeline of flexible pipe 1 from directly touching The metal structure of outer sleeve 2 here is touched, is played in cushioning effect, the tympanites portion insertion arc groove of the rear end of elastomer 8, to prevent On-slip takes off, after the completion of practical set, and certain predeformation occurs for elastomer.
In the present embodiment, as shown in fig. 6, the cambridge ring is made up of 4-6 blocks sphenoid 32, preferably 4 pieces of the present embodiment, institute The thickness for stating the rear end of sphenoid 32 is more than the thickness of its front end, and is brought into close contact between adjacent sphenoid 32, forms one completely Cambridge ring 3.Each angle of taper 33 of sphenoid 32 is slightly larger than the outer surface of flexible pipe 1 and the inwall of 2 front end conical section of outer sleeve 22 Angle, to increase, annular knurl or sandblasting layer are set on clamping effect, the inner surface of cambridge ring 3, with increase with the friction of flexible pipe 1, And its outer surface is done and is equidistantly provided with 3 seal grooves 34 on smooth treatment, the front end conical section outer surface of cambridge ring 3, installing When be put into sealing ring, by contact surface extruding reach complete seal.The rear end of cambridge ring 3 includes one flat section of portion 34, the flat section There is space 35 between portion 34 and outer sleeve, and the end of cambridge ring 3 keeps level with the front end of axe profile shaft 5.
In addition, as shown in fig. 7, the thickness at the middle part of the inner pressure ring 4 is more than the thickness at its two ends, its front end is notable to middle part Thicken have between section one it is small size thicken, so when inner pressure ring 4 inserts pipeline, can gradually produce a small shrink.It is interior The middle part and rear portion of pressure ring 4 are closely connected with axe shape axle 5, it would however also be possible to employ cold temperature interference or threaded connection, and the front end of inner pressure ring 4 is held Flexible duct inwall is connect, clamping force restriction conduit displacement is formed with the extruding of cambridge ring 3.Its middle part thicken design effectively reduce should Power is concentrated, and adds the structural strength of this Dangerous Place;In the present embodiment, inner pressure ring leading exterior surface is provided with sandblasting layer or rolling Flower, clamping effect is improved by inner pressure ring leading exterior surface by processing to increase the friction between flexible duct inwall.Internal pressure Seal groove 34 at two are respectively arranged with the outer wall of ring front-end and back-end, equally, seal groove is that section is trapezoidal or semicircle, can To place O-ring seal, and O-ring seal diameter is more than the depth capacity of annular groove, O-shaped where it during contact surface laminating Sealing ring is deformed forming interference fit, increases joint tighness, improves using effect.
It is engaged with inner pressure ring 4, a depressed part 52 is provided with the front inner wall of axe shape axle 5, to block inner pressure ring 4, The end of axe shape axle 5 is welded to connect with ring flange uiform section, and the front end face of retaining ring 6 is shouldered shoulder 51 with axe shape axle and is consistent, Liang Zhejie Contacting surface smooth treatment, the outer surface of the retaining ring 6 is provided with external screw thread, is engaged with outer sleeve internal thread, retaining ring 6 it is interior Footpath is slightly larger than the axle external diameter of axe profile shaft 5, to be inserted in, and is provided with three seal grooves 34 on the inwall of retaining ring 6, to increase Sealing.
Some elaborations, such as sealing ring, except being adopted as reducing annulus of other structures in the present embodiment(Its thickness is big In sealing groove height, width is slightly less than sealing well width), sealed colloid can also be injected;In wedge-shaped ring outer surface and outer sleeve Lubricant is scribbled between inner surface, sealant is threaded in outer sleeve and retaining ring threaded connection place, wherein, ring flange and with Axe profile shaft welding structure is selected according to ansi standard.All metal parts use high strength steel in the present embodiment, and at it Edges and corners are polished into fillet and avoid stress concentration, and preservative treatment is passed through in metal surface, and screw thread uses the material bigger than steel strength Material.
Specifically when mounted, fixed jacket ring first, inner pressure ring is fixed on inside axe profile shaft, then promote axe profile shaft to make it Front end is close to cambridge ring and flexible pipe is secondary thickens a section end, makes outer sleeve, cambridge ring, flexible pipe are secondary to thicken section, inner pressure ring Certain initial interference is produced between corresponding contact face, keeps overcoat ring position constant constant with axe profile shaft thrust, screws in lock Tight ring is until its front end is shouldered shoulder with axe profile shaft and is close to, and release thrust, whole joint inside completes overall interference;The outer wall of inner pressure ring Sandblasting layer is set, and cambridge ring inwall is by specially treateds such as annular knurls with increasing friction force, and ring flange is welded to connect with axe profile shaft, axe Profile shaft forms certain interference when mounted with cambridge ring rear end, can be locked by retaining ring and the threaded connection of outer sleeve rear end The interference prestressing force of internal structure ensures the compression effect of sphenoid, can also adjust pipe by changing the screw-in degree of retaining ring The degree that road is compacted.
When minute movement occurs for flexible pipe opposing tabs, because frictional force drives cambridge ring to be limited by outer sleeve inwall System, so that thrust is bigger, reaches the effect of self-tightening, material fatigue behaviour, which changes, makes the reduction of pipeline thrust When, it can adjust locking ring position at inspection and maintenance and lost to make up prestressing force.
In joint design described in this programme, the presence of pretightning force has three effects:First, cambridge ring and inner pressure ring limit are ensured The frictional force of tubing giving sufficient strength displacement will not lose;2nd, ensure that the Interference contact between each component contact face will not disappear so that soft Sealing between property pipeline and joint will not fail;3rd, stabilization of the part under overall structure effect is ensured, will not be because of outer The effect of load and occur larger or longer time vibration.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc. Imitate embodiment and be applied to other fields, but every without departing from technical solution of the present invention content, the technical spirit according to the present invention Any simple modification, equivalent variations and the remodeling made to above example, still fall within the protection domain of technical solution of the present invention.

Claims (10)

1. a kind of effective precompressed of ocean composite and flexible is from tight coupling, it is characterised in that including outer sleeve, cambridge ring, retaining ring, axe Profile shaft and inner pressure ring;
The outer sleeve is set on the outside of cambridge ring, and is provided between outer sleeve and cambridge ring seal, the outer sleeve Front end be taper, the rear end of outer sleeve is threadedly coupled with retaining ring, and retaining ring is arranged between outer sleeve and axe profile shaft;It is described Axe profile shaft one end is in contact with cambridge ring, and the other end is connected with ring flange;
The inner pressure ring is arranged on joint innermost layer, and inner pressure ring is fixedly connected with axe profile shaft inwall, and is existed between cambridge ring The space of flexible pipe is accommodated, extrudes to form clamping force restriction conduit displacement with cambridge ring.
2. joint according to claim 1, it is characterised in that:The outer sleeve is made by steel material, outer sleeve rear end It is provided with inwall in internal thread, outer sleeve front inner wall and is additionally provided with arc groove, sets flexible in the arc groove Body.
3. joint according to claim 1, it is characterised in that:Thickness in the middle part of the inner pressure ring is more than the thickness at its two ends Degree, the rear end of inner pressure ring is that interference is connected or is threadedly coupled with the connected mode of axe profile shaft inwall.
4. joint according to claim 3, it is characterised in that:The inner pressure ring leading exterior surface is provided with sandblasting layer.
5. joint according to claim 1, it is characterised in that:The cambridge ring is made up of 4-6 block sphenoids, the wedge shape The thickness of body rear end is more than the thickness of its front end, and is brought into close contact between adjacent sphenoid.
6. joint according to claim 5, it is characterised in that:The rear end of the cambridge ring includes one flat section of portion, described flat There is space between section portion and outer sleeve.
7. joint according to claim 6, it is characterised in that:The rolling of increase friction is provided with the wedge-shaped ring inner surface Flower or sandblasting layer.
8. joint according to claim 2, it is characterised in that:The outer surface of the retaining ring is provided with external screw thread, and outer Collar internal thread is engaged, and retaining ring internal diameter is slightly larger than the axle external diameter of axe profile shaft.
9. the joint according to claim 2,4,7 or 8 any one, it is characterised in that:On the inner pressure ring outer wall, cambridge ring Seal groove is provided with the male cone (strobilus masculinus) of front end, on retaining ring inwall and on ring flange.
10. joint according to claim 8, it is characterised in that:The elastomer high-strength rubber material is constituted, its rear end Including a tympanites portion, the tympanites portion is embedded in arc groove.
CN201710480640.0A 2017-06-22 2017-06-22 Prepressing self-tightening joint for ocean composite flexible pipe Active CN107044572B (en)

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CN107477281A (en) * 2017-09-16 2017-12-15 中国海洋大学 A kind of double limitation connection systems of ocean fiber reinforced composite pipe
CN107654775A (en) * 2017-11-29 2018-02-02 西南石油大学 A kind of submarine pipeline adpting flange
CN107687558A (en) * 2017-09-04 2018-02-13 中国海洋大学 A kind of seabed fiber-reinforced composite flexible pipe combined type buckle arrestor
CN108005587A (en) * 2017-12-30 2018-05-08 中国石油天然气股份有限公司 Three-channel continuous flexible composite pipe connecting joint and mounting method
CN108429205A (en) * 2018-03-29 2018-08-21 威海纳川管材有限公司 A kind of Intelligent Composite flexible pipe joint end protective cover
CN108662327A (en) * 2018-04-30 2018-10-16 中山广毅自动化设备有限公司 A kind of hose quick locking sealing device
CN109085066A (en) * 2018-08-27 2018-12-25 福建益峰科技有限公司 Plastic cement or fibre pipe deferent internal pressure detection structure and preparation method thereof
CN109268602A (en) * 2018-04-30 2019-01-25 中山市道格装饰设计工程有限公司 A kind of sealing device of quick locking
CN109296858A (en) * 2018-11-23 2019-02-01 中国石油大学(华东) A kind of ocean flexible pipe joint structure
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CN110792861A (en) * 2019-10-31 2020-02-14 刘锡多 Internal support device of pipeline crimping connector and full-bore crimping connection method
CN111022800A (en) * 2019-11-04 2020-04-17 刘刚 Water pipe and rifle head coupling mechanism
US10626917B1 (en) 2019-04-11 2020-04-21 Goodrich Corporation Hybrid metallic/composite joint with separate internal bearing
WO2021259342A1 (en) * 2020-06-24 2021-12-30 青岛理工大学 Prestress constrained block and composite armor structure
CN115077317A (en) * 2022-07-26 2022-09-20 中国矿业大学 Flexible carbon dioxide phase change blasting cracking device and using method thereof
US11512738B2 (en) 2019-04-11 2022-11-29 Goodrich Corporation Hybrid metallic/composite joint with separate internal bearing
CN115609627A (en) * 2022-10-08 2023-01-17 深圳市越疆科技有限公司 Mechanical arm, joint module and coding assembly thereof

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