CN109538871A - Anti-bending device and flexible pipe line - Google Patents
Anti-bending device and flexible pipe line Download PDFInfo
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- CN109538871A CN109538871A CN201811241196.8A CN201811241196A CN109538871A CN 109538871 A CN109538871 A CN 109538871A CN 201811241196 A CN201811241196 A CN 201811241196A CN 109538871 A CN109538871 A CN 109538871A
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- Prior art keywords
- bending device
- main body
- device main
- bending
- flexible pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The present invention provides a kind of anti-bending device and flexible pipe line, and the anti-bending device includes: that anti-bending device is seperated；Multiple anti-bending device fissions are fixedly connected to form anti-bending device main body, the outer diameter of the anti-bending device main body is circle, the outer diameter of the anti-bending device main body is gradually reduced from top to the bottom end of the anti-bending device main body, the contact surface of the two neighboring anti-bending device fission is helicoid, and the axis of the helicoid is overlapped with the axis of the anti-bending device main body.Anti-bending device and flexible pipe line provided by the invention, by being helical structure by anti-bending device split settings, so that the Curvature varying of anti-bending device entirety is more smooth, to drop stress concentration.
Description
Technical field
The present invention relates to ocean flexible pipe line technology field more particularly to a kind of anti-bending devices and flexible pipe line.
Background technique
In oil-gas field development project especially deep water hydrocarbon field exploration project, flexible pipe line is as common underwater production
The important equipment of system is subsea production system equipment pumped (conveying) medium, such as water delivery, oil transportation and gas transmission.In order to guarantee flexible pipe line
Normal work, flexible pipe line end dynamic application will generally install anti-bending device, prevent overbending deformation, guarantee flexible
Pipeline safety is run in place.Anti-bending device has become the common equipment of ocean flexible pipe line, and structure is simple, easy for installation etc. excellent
Point.
Fig. 1 is the partial structural diagram for the anti-bending device that the prior art provides, and Fig. 2 is the anti-bending device that the prior art provides
Overall structure diagram, referring to fig. 1 and fig. 2, existing anti-bending device are typical split type conical members, including by two
The anti-bending device main body 200 of cone of a anti-bending 100 composition of device fission, is set the centre bore 21 being arranged in inside anti-bending device main body 200
The bolt connecting hole 23 setting the flange bolt part 22 at the top of anti-bending device main body 200 and being arranged on conical body 100, it is seperated
The bolt part that formula conical body is bolted in hole 23 is connected as entirety, passes through flange bolt part 22 and flexible pipe line
End-fitting or floating body connection.
The split type anti-bending device of cone that the prior art provides, although can satisfy the requirement of flexible pipe line maximum curvature,
But due to the presence of bolt connecting hole 23, the bolt in the anti-bending device main body 200 of cone is connected, and causes curvature distribution
Unevenness be easy to cause generation fatigue rupture at flexible pipe line maximum curvature.
Summary of the invention
The present invention provides a kind of anti-bending device and flexible pipe line, by being helical structure by anti-bending device split settings, so that
The Curvature varying of anti-bending device entirety is more smooth, to drop stress concentration.
One aspect of the present invention provides a kind of anti-bending device, comprising: anti-bending device is seperated；
Multiple anti-bending device fissions are fixedly connected to form anti-bending device main body, and the outer diameter of the anti-bending device main body is circle, described
The outer diameter of anti-bending device main body is gradually reduced from top to the bottom end of the anti-bending device main body, the two neighboring anti-bending device fission
Contact surface is helicoid, and the axis of the helicoid is overlapped with the axis of the anti-bending device main body.
Anti-bending device as described above, the rotation angle of the helicoid was less than one week.
Anti-bending device as described above, further includes: along the centre bore that the axis of the anti-bending device main body is arranged, the center
Hole is for accommodating flexible pipe line.
Anti-bending device as described above, further includes: ring flange, the ring flange are connected to the top of the anti-bending device main body,
The ring flange is used to connect the end-fitting or floating body of flexible pipe line.
Anti-bending device as described above, the ring flange are connected by bolt with the metal for being embedded in the anti-bending device main body top
Fitting connection.
Anti-bending device as described above is evenly distributed with multiple connecting holes on the anti-bending device fission, two neighboring described anti-
Curved device fission is fixedly connected by the threaded fastener being mounted in the connecting hole.
Anti-bending device as described above, the quantity of the anti-bending device fission are three, the shape of three anti-bending device fissions
Identical, the rotation angle of the helicoid is one third week.
Anti-bending device as described above, the anti-bending device main body include short cylindrical section and conical section, the short cylindrical section it is outer
Diameter is equal to the maximum outside diameter of the conical section, and the minimum outer diameter of the conical section is greater than the diameter of flexible pipe line.
Anti-bending device provided by the invention, it is seperated by the way that multiple anti-bending devices are arranged, and connecing two neighboring anti-bending device fission
Contacting surface is set as helicoid, i.e., anti-bending device fission twist structure, may make that anti-bending device integrally bending Curvature varying is more flat
It is sliding, to effectively reduce the hot spot region that fatigue occurs for flexible pipe line, stress concentration is dropped, is improved service life.Further,
Anti-bending device fission is fixedly connected to form anti-bending device main body by threaded fastener, by the ring flange on anti-bending device main body top with it is soft
The end-fitting or floating body of property pipeline are connected, and overall structure is simple, convenient for disassembly and assembly, are easy to be extended and applied.
Anti-bending device as described above, the outer contour of the anti-bending device main body are smooth curvature curve.
Another aspect of the present invention also provides a kind of flexible pipe line, comprising: anti-bending device as described above.
Flexible pipe line provided by the invention, it is seperated by setting multiple anti-bending devices for anti-bending device, and two neighboring will prevent
The contact surface of curved device fission is set as the mode of helicoid, makes anti-bending device fission twist structure, may make that anti-bending device is whole
Bending curvature variation is more smooth, to effectively reduce the hot spot region that fatigue occurs for flexible pipe line, drops stress concentration, improves
Service life.Further, anti-bending device fission is fixedly connected to form anti-bending device main body by threaded fastener, passes through anti-bending device master
The ring flange on body top is connected with the end-fitting of flexible pipe line or floating body, and overall structure is simple, convenient for disassembly and assembly, convenient for pushing away
Wide and application.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the partial structural diagram for the anti-bending device that the prior art provides；
Fig. 2 is the overall structure diagram for the anti-bending device that the prior art provides；
Fig. 3 is the partial structural diagram of anti-bending device provided in an embodiment of the present invention；
Fig. 4 is the overall structure diagram of anti-bending device provided in an embodiment of the present invention；
Fig. 5 is the another structural schematic diagram of anti-bending device provided in an embodiment of the present invention.
Appended drawing reference:
The anti-bending device of 100- is seperated
11- helicoid
The anti-bending device main body of 200-
21- centre bore
22- ring flange
23- connecting hole
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the attached drawing in the present invention, to this
Technical solution in invention is clearly and completely described, it is clear that and described embodiments are some of the embodiments of the present invention,
Instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, shall fall within the protection scope of the present invention.
It should be noted that submarine pipeline is the most important means of transport of Marine oil and gas resource, be subsea production system most
Crucial one of equipment.Wherein, flexible pipe line is most widely used in submarine pipeline, has flexibility prominent, be laid with it is simple,
The advantages that design space is big, recyclable, environmentally friendly.Flexible pipe line generally different material layer it is folded made of multilayer cased pipe,
With lesser bending radius, to due to floating motion, wave, also stay and installation exercise etc. caused by bending load have it is preferable
Compliance.
In the application of flexible pipe line, generally requires and anti-bending equipment is being installed with the junction of floating body, prevent flexible pipe line
Overbending deformation occurs, and then guarantees its normal operation in place.Anti-bending equipment includes anti-bending device, bend limiter, horn mouth etc., and one
As be mounted on flexible pipe line be easiest to occur position upper end or lower end that stress concentrates perhaps bending failure, playing prevents
Flexible pipe line overbending reduces the effect of fatigue damage.
Wherein, anti-bending device have many advantages, such as it is easy for installation, require space small, be that most widely used ocean compliant riser is anti-
Curved equipment.It when making it by bending load, is unlikely to overbending, advantage is by the local stiffness of increase flexible pipe line
The fatigue damage of flexible pipe line can effectively be inhibited.
Referring to fig. 1 and fig. 2, in the prior art, anti-bending device is typical split type conical member, including by two
The anti-bending device main body 200 of cone of anti-bending 100 composition of device fission, the centre bore 21 being arranged in inside anti-bending device main body 200, setting
Flange bolt part 22 at 200 top of anti-bending device main body and the bolt connecting hole 23 that is arranged on conical body 100, it is split type
The bolt part that conical body is bolted in hole 23 is connected as entirety, passes through the end of flange bolt part 22 and flexible pipe line
Portion's connector or floating body connection.
The split type anti-bending device of cone that the prior art provides, although can satisfy the requirement of flexible pipe line maximum curvature,
But due to the presence of bolt connecting hole 23, the bolt in the anti-bending device main body 200 of cone is connected, and causes curvature distribution
Unevenness be easy to cause generation fatigue rupture at flexible pipe line maximum curvature.Therefore, the present invention is directed to existing split type circular cone
The anti-bending device of shape improves, and to reduce the region that flexible pipe line is easy to produce fatigue failure, improves service life.
Embodiment one
Fig. 3 is the partial structural diagram of anti-bending device provided in an embodiment of the present invention, and Fig. 4 is provided in an embodiment of the present invention
The overall structure diagram of anti-bending device, with reference to shown in Fig. 3 and Fig. 4, one aspect of the present invention provides a kind of anti-bending device, comprising: anti-bending
Device fission 100；Multiple anti-bending device fissions 100 are fixedly connected to form anti-bending device main body 200, and the outer diameter of anti-bending device main body 200 is circle
The outer diameter of shape, anti-bending device main body 200 is gradually reduced from top to the bottom end of anti-bending device main body 200, and two neighboring anti-bending device is seperated
100 contact surface is helicoid 11, and the axis of helicoid 11 is overlapped with the axis of anti-bending device main body 200.
Specifically, anti-bending device main body 200 is formed by fixedly connecting by multiple anti-bending 100 combinations of device fission, compared to monoblock type
The anti-bending device of structure, the more convenient production of split type structure, transport and assembly and disassembly.The outer diameter of anti-bending device main body 200 is circle, so that
Anti-bending device stable structure, uniform force.Flexible pipe line is generally threaded through in anti-bending device, the load being subject to due to the end of flexible pipe line
Lotus is maximum, therefore the outer diameter of anti-bending device main body 200 is gradually reduced from top to bottom end, so that the curvature distribution of flexible pipe line is equal
It is even.
Wherein, the outer contour of anti-bending device main body 200 is not particularly limited in the present embodiment, outer diameter need meet from
The basic condition that top to bottom end is gradually reduced, so that the curvature distribution of flexible pipe line is uniform.Specifically, the effect of anti-bending device
It is the safety for protecting the end of flexible pipe line, therefore, size, the internal pressure, drawing of the specific size design and flexible pipe line of anti-bending device
It stretches with bending stiffness, is related using characteristics such as the depth of waters.
The present embodiment is by setting helicoid 11 for the contact surface of two neighboring anti-bending device fission 100, i.e., anti-bending device point
The twist structure of body 100, may make anti-bending device integrally bending Curvature varying more smooth, to effectively reduce flexible pipe line hair
The hot spot region of raw fatigue, drops stress concentration, improves service life.
Wherein, anti-bending device generally uses polyurethane elastomer, to increase wearability and anti-aging property.Wherein, polyurethane
Elastomer is the high molecular synthetic material for containing more carbamate groups on a kind of main chain, generally by polyester, polyethers and
Gradually addition polymerization forms for the oligomer polyols such as polyolefin and polyisocyanates and glycol or Diamines chain extender.
About helicoid 11, axis is overlapped with the axis of anti-bending device main body 200, and bus is anti-bending device main body 200
Radius.The rotation angle of helicoid 11 spends hour, unobvious to the improvement of anti-bending device curvature, and the rotation angle of helicoid 11 is spent
When big, not only resulting in the integrally-built stability of anti-bending device is reduced, and processing technology is complicated, increases construction cost.It is preferred that
Ground, the rotation angle of helicoid 11 was less than one week.
In the present embodiment, anti-bending device further include: along the centre bore 21 that the axis of anti-bending device main body 200 is arranged, centre bore
21 for accommodating flexible pipe line.Specifically, centre bore 21 by be arranged on multiple anti-bending device fissions 100 arc-shaped through-hole splicing and
At centre bore 21 is to adapt to flexible pipe line, should be provided in round hole, and the radius of centre bore 21 should be slightly bigger than the straight of flexible pipe line
Diameter.Flexible pipe line is threaded through in centre bore 21, so that anti-bending device plays a protective role to flexible pipe line.
Further, in this embodiment anti-bending device further include: ring flange 22, ring flange 22 are connected to anti-bending device main body 200
Top, ring flange 22 is used to connect the end-fitting or floating body of flexible pipe line.In order to fix the position of anti-bending device, by
Ring flange 22 is arranged in the top of anti-bending device main body 200, and ring flange 22 is connect with the end-fitting of flexible pipe line or floating body.
During long-term dynamics are on active service, anti-bending device is easy to fall off due to Joint failure, leads to flexible pipe line quilt
It destroys, therefore the connection reliability of the end-fitting or floating body of anti-bending device and flexible pipe line is most important.Specifically, due to anti-
Curved device main body 200 is polyurethane elastomer material, and ring flange 22 is metal material, realizes ring flange 22 and anti-bending device main body
200 connection can there are many modes, such as size to be fitted into, be bolted, weld.
Preferably, ring flange 22 is connect by bolt with the metal connecting piece for being embedded in anti-bending 200 top of device main body.Its
In, metal connecting piece is embedded into the anti-bending device main body 200 of elastic polyurethane part material, the mutual chimeric of connecting component is passed through
With the effect of frictional force, metal connecting piece and anti-bending device main body 200 are linked together, referred to as interior connection.Again by by flange
Disk and bolt link together the end-fitting of metal connecting piece and floating body or flexible pipe line, referred to as outer connection.This company
It is simple, safe and reliable to connect form structure, it is easy to process.
It is generally, anti-bending as the fixed form that multiple anti-bending device fissions 100 are fixedly connected as to anti-bending device main body 200
Multiple connecting holes 23 are evenly distributed on device fission 100, two neighboring anti-bending device fission 100 is by being mounted in connecting hole 23
Threaded fastener is fixedly connected.Preferably, threaded fastener is bolt, is fixed on multiple anti-bending device fissions 100 by bolt
Together, which is simple and convenient to operate.
The quantity of anti-bending device fission 100 be it is multiple, multiple anti-bending device fissions 100 cooperatively form anti-bending device main body 200.It is anti-bending
When the quantity of device fission 100 is excessive, not only resulting in the integrally-built stability of anti-bending device is reduced, and processing technology is complicated,
Increase construction cost；And the quantity of anti-bending device fission 200 be less than three when, it is unobvious to the improvement of anti-bending device curvature.
In a kind of preferred embodiment, the quantity of anti-bending device fission 100 is three, the shape of three anti-bending device fissions 100
Shape is identical, and the rotation angle of helicoid 11 is one third week.Three anti-bending device fissions 100 are metastable structure, not only
It is obviously more smooth can to make anti-bending device integrally bending Curvature varying, to effectively reduce the hot spot that fatigue occurs for flexible pipe line
Region, and it is more convenient to install.
With reference to shown in Fig. 3 and Fig. 4, when the quantity of anti-bending device fission 100 is three, the shape of three anti-bending device fissions 100
Shape is identical.The handover line for defining the outer surface positioned at anti-bending device main body 200 of the anti-bending device fission 100 of adjacent two is spiral shell
Spin line, then the beginning and end of a helix is 120 degree relative to anti-bending 200 axis centre of device main body, the angle of rotation, i.e.,
The rotation angle of each helicoid 11 is one third week.
With continued reference to shown in Fig. 3 and Fig. 4, in a kind of feasible embodiment, anti-bending device main body 200 include short cylindrical section and
Conical section, the outer diameter of short cylindrical section are equal to the maximum outside diameter of conical section, and the minimum outer diameter of conical section is greater than the diameter of flexible pipe line.
Since the impact force that the top of anti-bending device main body 200 is subject to is bigger, on the top one of anti-bending device main body 200
Side can set cylindrical section for one section of anti-bending device main body 200, the design generally conical compared to anti-bending device main body 200, short
The setting that cylindrical section and conical section combine, can withstand more force, to effectively reduce the hot zone that fatigue occurs for flexible pipe line
Domain drops stress concentration, improves service life.
Fig. 5 is the another structural schematic diagram of anti-bending device provided in an embodiment of the present invention, refering to what is shown in Fig. 5, at another
In feasible embodiment, the outer contour of anti-bending device main body 200 is smooth curvature curve.By the outer profile of anti-bending device main body 200
Line is set as smooth curvature curve, can adapt to flexible pipe line bigger tension and load angle, and usable range increases, curvature edge
Flexible pipe line axial direction distribution it is more uniform and smooth, thus effectively reduce flexible pipe line occur fatigue hot spot region, drop
Stress concentration improves service life.Wherein, the specific function shape of the smooth curvature curve outer contour of anti-bending device main body 200
Formula is needed to be got according to means such as finite element analysis, experiments, is not further discussed in the present embodiment.
Anti-bending device provided in an embodiment of the present invention, it is seperated by the way that multiple anti-bending devices are arranged, and two neighboring anti-bending device is divided
The contact surface of body is set as helicoid, i.e., anti-bending device fission twist structure may make anti-bending device integrally bending Curvature varying
It is more smooth, to effectively reduce the hot spot region that fatigue occurs for flexible pipe line, stress concentration is dropped, is improved service life.Into
One step, anti-bending device fission is fixedly connected to form anti-bending device main body by threaded fastener, passes through the method on anti-bending device main body top
Blue disk is connected with the end-fitting of flexible pipe line or floating body, and overall structure is simple, convenient for disassembly and assembly, is easy to be extended and applied.
Embodiment two
Another aspect of the present invention also provides a kind of flexible pipe line, comprising: anti-bending device as above.
Wherein, the anti-bending device, comprising: anti-bending device fission 100；Multiple anti-bending device fissions 100 are fixedly connected to form anti-bending
Device main body 200, the outer diameter of anti-bending device main body 200 are circle, and the outer diameter of anti-bending device main body 200 is from the top of anti-bending device main body 200
It is gradually reduced to bottom end, the contact surface of two neighboring anti-bending device fission 100 is helicoid 11, the axis of helicoid 11 and anti-bending device
The axis of main body 200 is overlapped.
Further, the rotation angle of helicoid 11 was less than one week.
Anti-bending device further include: along the centre bore 21 that the axis of anti-bending device main body 200 is arranged, centre bore 21 is soft for accommodating
Property pipeline.
Further, anti-bending device further include: ring flange 22, ring flange 22 are connected to the top of anti-bending device main body 200, flange
Disk 22 is used to connect the end-fitting or floating body of flexible pipe line.
Optionally, ring flange 22 is connect by bolt with the metal connecting piece for being embedded in anti-bending 200 top of device main body.
Further, multiple connecting holes 23, two neighboring anti-bending device fission 100 are evenly distributed on anti-bending device fission 100
It is fixedly connected by the threaded fastener being mounted in connecting hole 23.
Preferably, the quantity of anti-bending device fission 100 is three, and the shape of three anti-bending device fissions 100 is identical, helicoid 11
Rotation angle be one third week.
Optionally, anti-bending device main body 200 includes short cylindrical section and conical section, and the outer diameter of short cylindrical section is equal to conical section most
Big outer diameter, the minimum outer diameter of conical section are greater than the diameter of flexible pipe line.
Alternatively, the outer contour of anti-bending device main body 200 is smooth curvature curve.
Flexible pipe line provided in an embodiment of the present invention, by setting multiple anti-bending devices fissions for anti-bending device, and will be adjacent
The contact surface of two anti-bending device fissions is set as the mode of helicoid, makes anti-bending device fission twist structure, may make anti-bending
Device integrally bending Curvature varying is more smooth, to effectively reduce the hot spot region that fatigue occurs for flexible pipe line, reduces stress collection
In, it improves service life.Further, anti-bending device fission is fixedly connected to form anti-bending device main body by threaded fastener, passes through
The ring flange on anti-bending device main body top is connected with the end-fitting of flexible pipe line or floating body, and overall structure is simple, dismounting side
Just, it is easy to be extended and applied.
In the description of the present invention, it is to be understood that, used term " center ", " length ", " width ", " thickness
Degree ", " top ", " bottom end ", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outside" " axis
To ", the indicating positions such as " circumferential direction " or positional relationship be to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of describing
The present invention and simplified description, rather than the position of indication or suggestion meaning or original part must have a particular orientation, with specific
Construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
It shall be understood in a broad sense, such as may be a fixed connection, may be a detachable connection, or be integrally formed；It can be mechanical connection,
It is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
Make the connection inside two elements or the interaction relationship of two elements.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of anti-bending device characterized by comprising anti-bending device is seperated；
Multiple anti-bending device fissions are fixedly connected to form anti-bending device main body, and the outer diameter of the anti-bending device main body is circle, described anti-bending
The outer diameter of device main body is gradually reduced from top to the bottom end of the anti-bending device main body, the contact of the two neighboring anti-bending device fission
Face is helicoid, and the axis of the helicoid is overlapped with the axis of the anti-bending device main body.
2. anti-bending device according to claim 1, which is characterized in that the rotation angle of the helicoid was less than one week.
3. anti-bending device according to claim 1 or 2, which is characterized in that further include: along the axis of the anti-bending device main body
The centre bore of setting, the centre bore is for accommodating flexible pipe line.
4. anti-bending device according to claim 3, which is characterized in that further include: ring flange, the ring flange are connected to described
The top of anti-bending device main body, the ring flange are used to connect the end-fitting or floating body of flexible pipe line.
5. anti-bending device according to claim 4, which is characterized in that the ring flange by bolt be embedded in it is described anti-bending
The metal connecting piece on device main body top connects.
6. anti-bending device according to claim 1 or 2, which is characterized in that be evenly distributed on the anti-bending device fission multiple
Connecting hole, the two neighboring anti-bending device fission are fixedly connected by the threaded fastener being mounted in the connecting hole.
7. anti-bending device according to claim 1 or 2, which is characterized in that the quantity of the anti-bending device fission is three, three
The shape of the anti-bending device fission is identical, and the rotation angle of the helicoid is one third week.
8. anti-bending device according to claim 1, which is characterized in that the anti-bending device main body includes short cylindrical section and circular cone
Section, the outer diameter of the short cylindrical section are equal to the maximum outside diameter of the conical section, and the minimum outer diameter of the conical section is greater than flexible pipe
The diameter of line.
9. anti-bending device according to claim 1, which is characterized in that the outer contour of the anti-bending device main body is smooth curvature
Curve.
10. a kind of flexible pipe line characterized by comprising such as the described in any item anti-bending devices of claim 1-9.
Priority Applications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895222A (en) * | 2019-12-12 | 2020-03-20 | 大连理工大学 | Stretch bending combined mechanical experiment device for marine pipe cable bending limiter |
| CN116061157A (en) * | 2023-03-31 | 2023-05-05 | 清华大学 | Exoskeleton bracket assembly and arm bracket assembly and manufacturing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2446981A1 (en) * | 1979-01-19 | 1980-08-14 | Coflexip | CURVE LIMITER FOR FLEXIBLE TUBULAR CONDUITS |
| GB9515171D0 (en) * | 1994-07-23 | 1995-09-20 | Crp Group Ltd | Bend stiffeners |
| CN1220717A (en) * | 1997-03-14 | 1999-06-23 | 科菲莱克西普公司 | Device for limiting bending radius of flexible duct |
| US7857009B2 (en) * | 2008-02-05 | 2010-12-28 | Siemens Aktiengesellschaft | Increasing the bending strength of tubes |
| CN103982742A (en) * | 2014-05-16 | 2014-08-13 | 大连理工大学 | Marine flexible pipe cable anti-bending device based on spline |
| CN108240202A (en) * | 2016-12-25 | 2018-07-03 | 天津欧神科技有限公司 | A kind of bend limiter of super-pressure seabed compliant riser |
| CN108453971A (en) * | 2018-04-08 | 2018-08-28 | 大连理工大学 | A kind of anti-bending device of ocean flexible pipe cable and its manufacturing method |
-
2018
- 2018-10-24 CN CN201811241196.8A patent/CN109538871B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2446981A1 (en) * | 1979-01-19 | 1980-08-14 | Coflexip | CURVE LIMITER FOR FLEXIBLE TUBULAR CONDUITS |
| GB9515171D0 (en) * | 1994-07-23 | 1995-09-20 | Crp Group Ltd | Bend stiffeners |
| CN1220717A (en) * | 1997-03-14 | 1999-06-23 | 科菲莱克西普公司 | Device for limiting bending radius of flexible duct |
| US7857009B2 (en) * | 2008-02-05 | 2010-12-28 | Siemens Aktiengesellschaft | Increasing the bending strength of tubes |
| CN103982742A (en) * | 2014-05-16 | 2014-08-13 | 大连理工大学 | Marine flexible pipe cable anti-bending device based on spline |
| CN108240202A (en) * | 2016-12-25 | 2018-07-03 | 天津欧神科技有限公司 | A kind of bend limiter of super-pressure seabed compliant riser |
| CN108453971A (en) * | 2018-04-08 | 2018-08-28 | 大连理工大学 | A kind of anti-bending device of ocean flexible pipe cable and its manufacturing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895222A (en) * | 2019-12-12 | 2020-03-20 | 大连理工大学 | Stretch bending combined mechanical experiment device for marine pipe cable bending limiter |
| CN116061157A (en) * | 2023-03-31 | 2023-05-05 | 清华大学 | Exoskeleton bracket assembly and arm bracket assembly and manufacturing method thereof |
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| CN109538871B (en) | 2020-03-13 |
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