CN102062258A - Submarine pipeline bending arrestor with stability support and fixing method thereof - Google Patents
Submarine pipeline bending arrestor with stability support and fixing method thereof Download PDFInfo
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- CN102062258A CN102062258A CN 201010603025 CN201010603025A CN102062258A CN 102062258 A CN102062258 A CN 102062258A CN 201010603025 CN201010603025 CN 201010603025 CN 201010603025 A CN201010603025 A CN 201010603025A CN 102062258 A CN102062258 A CN 102062258A
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Abstract
The invention belongs to the technical field of submarine pipeline facility paving, in particular to a submarine pipeline bending arrestor with a stability support. The submarine pipeline bending arrestor with a stability support is fixed between two segments of a submarine pipeline when in use and comprises a stability support and a spherical bending arrestor fixed inside the stability support, wherein the bending arrestor is axiolitic and has a toroidal cross section, the internal diameter of the bending arrestor is identical to the internal diameter of the pipeline, the external diameter of the cross section axially changes and is gradually reduced from the middle to both ends; the external diameters of the cross sections of both ends of the bending arrestor are identical to the external diameter of the pipeline, the stability support comprises a shell with two petals in identical cross sections, i.e. one semi-toroidal upper shell and one semi-toroidal lower shell with a smoothed bottom and a groove in the bottom middle; the edges of the two petals of the shell are provided with outwards extending eye plates, and bolts penetrate through the eye plates to connect the two petals of shell together and tightly stick the shell to the outer surfaces of the pipeline and the spherical bending arrestor. The invention also provides a fixing method of the bending arrestor. By means of the invention, the stress concentration of the submarine pipeline bending arrestor can be effectively prevented and the on-site stability of the submarine pipeline can be enhanced.
Description
Technical field
The invention belongs to submarine pipeline facility laying technology field, be specifically related to a kind of submarine pipeline appurtenances.
Background technique
1. the buckle propagation of submarine pipeline and buckle arrestor
Buckling failure externally under hydrostatic pressure and the flecition, takes place in submarine pipeline easily.The form of buckling failure has two kinds: a kind of is cripling (Collapse), and another kind is buckle propagation (Propagating Buckles).Theoretically, if cripling does not take place controlling plumbing fixtures, just buckle propagation can not take place; Even but pipeline selects and lays in strict accordance with designing requirement, in the process of deployment of actual engineering, still some situations can appear, can make that pipeline is stressed to surpass the expectation, cause cripling.For example, submarine pipeline may be subjected to the external force effect from other objects such as sea beds, perhaps running into some obstacle in the process of deployment makes pipeline produce excessive bending deflection etc., these reasons all can make pipeline produce cripling, that is to say, in this complex environment in seabed, cripling will take place and be difficult in fact avoid in submarine pipeline.In a single day local flexing unstability takes place, and just might propagate along pipe lengths, and then make whole pipe structure generation failure damage, thereby cause enormous economic loss.
At present, solve a method that has much Economy of submarine pipeline buckle propagation problem, keeping at a certain distance away along the length direction of pipeline exactly is provided with buckle arrestor (Buckling Arrestor).Its working principle allows pipeline generation cripling exactly, but buckle propagation can not be crossed over buckle arrestor, and cripling is only betided between two buckle arrestors.
Effective buckle arrestor should be able to successfully stop buckle propagation, its form in the design maximum depth of water generally be a thick ring or winding rod, and the mode difference according to installing generally can be divided into the formula of buckling into, common welding type, integrated type and wrap style buckle arrestor.Application for a patent for invention 200910309743.6 discloses a kind of submarine pipeline buckle arrestor with the spiral side plate, this kind, by comprising that two size housings identical with structure are formed by connecting, each housing is respectively the semi-round ring shape of variable cross section, and two housings all are provided with overhanging eye plate, and described eye plate is used for connecting two housings by bolt, external diameter changes vertically and connects by crossing the inclined-plane, two ends are thicker, and the middle part is thinner, and two housings connect into the circular cylinder of a variable cross section.This kind submarine pipeline buckle arrestor, because the structural feature of itself, there is discontinuity in pipeline at the wall thickness of buckle arrestor position, thereby can produce the flexural stress centrostigma, particularly in the pipe laying process, easily pipeline is caused harmful effect.
2. the stability Design on the throne of submarine pipeline
The main purpose of submarine pipeline stability Design on the throne is, select suitable submarine line, pipeline material, line size, and pipeline installation and processing and maintaining method, rugged environment load such as the wave that pipeline can be resisted may run into during runing, ocean current, and make investment cost minimum.Though submarine pipeline is positioned at the seabed, wave and ocean current still can produce harmful effect to the stability on the throne of submarine pipeline.Under wave and action of ocean current, submarine pipeline stability on the throne is relevant with the multiple factors such as resistance that pipeline weight, environmental load and submarine soil layer produce.If the resistance that foundation of sea floor soil is provided is not enough to balance wave force and ocean current power, pipeline can skid off from original position and unstable phenomenon on the throne takes place.
For preventing submarine pipeline unstability on the throne, must improve the weight under water of pipeline or pipeline is buried underground or covered.The pipeline raising of weight under water generally is to realize by the thickness that increases pipeline coagulation soil weight coating, yet excessive piping design weight can propose higher requirement to pipe laying facility and method again; And if, then need to expend huge construction cost with piping laying or covering.As seen, reasonably submarine pipeline stability analysis on the throne, significant to the selection of Submarine Pipeline Design and laying construction method.According to buckle arrestor submarine pipeline is carried out the design philosophy that local stiffness is strengthened, the stability on the throne that improves pipeline also can realize by certain local resistance strengthening measure, can obtain reasonable balance like this in the middle of Security and Economy.
Summary of the invention
The objective of the invention is to overcome the deficiency on the prior art, the local strengthening device that can prevent effectively that submarine pipeline buckle arrestor stress from concentrating and strengthening submarine pipeline stability on the throne is provided, and the method that provides a kind of this device on submarine pipeline, to install.The present invention takes proper construction technology, reduces cost, and effectively controls the buckle arrestor stress of submarine pipeline and concentrates and unstable phenomenon on the throne, realizes the perfect unity of Economy and Security.
The present invention adopts following technological scheme:
A kind of submarine pipeline buckle arrestor with the stability support, be fixed on during use between the two-section submarine pipeline, comprise that stability supports and fixing within it spherical buckle arrestor, described buckle arrestor is elliposoidal, its cross section is a ring, internal diameter is identical with internal diameter of the pipeline, the cross section external diameter changes vertically, dwindles gradually from the middle to both ends, and the cross section external diameter at buckle arrestor two ends is identical with outer diameter tube, described stability supports and comprises the prismatic housing of two lobes, one is upper shell, and one is lower shell body, and upper shell is a semi-round ring shape, lower shell body is the semi-round ring shape that scabble the bottom, has groove in the middle of the bottom; The edge of two lobe housings all has overhanging eye plate, and bolt passes eye plate, two lobe housings is fused, and be close on the outer surface of pipeline and spherical buckle arrestor.
As preferred implementation, the internal surface of the two lobe housings that described stability supports agrees with mutually with the outer surface of submarine pipeline and spherical buckle arrestor, leaves 1～2% the slit that is no more than outer diameter tube between the inner and outer surface; The thickest of spherical buckle arrestor is got 2-4 pipeline wall thickness doubly, and total length is got 1.5-2.5 outer diameter tube doubly.
The present invention provides the fixation method of the submarine pipeline buckle arrestor of a kind of above-mentioned band stability support simultaneously, may further comprise the steps:
(1), makes spherical buckle arrestor and constitute the two lobe uniform section housings that stability supports according to the external diameter and the wall thickness dimension of given submarine pipeline;
(2) spherical buckle arrestor is welded between two sections submarine pipelines;
When (3) the stability support being installed, at first the hypovalve housing is close to the bottom of spherical buckle arrestor,, the epivalve housing is docked with manned hypovalve housing by the outer surface of eye plate position and spherical buckle arrestor; Two lobe housings are fixed by bolt, and bolt passes eye plate two lobe housings are fused, and wraps in the outside of spherical buckle arrestor and submarine pipeline outward;
(4) at two lobe shell inner surface of stability support and the micro-gap between submarine pipeline and the spherical buckle arrestor outer surface, fill by pouring into cement, mulling epoxy resin and polyurethane etc.;
(5) lay concrete weighted coating installing the pipe section of stability beyond supporting, the end that stability supports is close in the end of concrete weighted coating.
In (5) step,, stability then is installed after the pipe laying barge stretcher supports if the outer surface of concrete weighted coating can not be concordant with the outer surface that stability supports; The internal surface of the two lobe housings that described stability supports agrees with mutually with the outer surface of submarine pipeline and spherical buckle arrestor, leaves 1～2% the slit that is no more than outer diameter tube between the inner and outer surface.
The invention provides and a kind of the collection prevent that submarine pipeline buckle arrestor stress from concentrating and the local strengthening device of enhancing submarine pipeline stability on the throne, compared with prior art have the following advantages:
(1) the present invention can effectively prevent the buckle propagation after the submarine pipeline generation cripling, guarantee the integrity of submarine pipeline integral body, significantly reduce economic loss, because spherical buckle arrestor among the present invention and pipeline welding are together, therefore anti-bend is respond well, is highly suitable for the deep water submarine pipeline;
(2) external diameter of spherical buckle arrestor reduces from the middle to both ends gradually, last identical with outer diameter tube, the outer surface transition of buckle arrestor and pipeline is mild, can effectively avoid flexural stress to concentrate, particularly in the pipe laying process, can reduce the harmful effect that pipeline is caused as far as possible;
(3) processing has been carried out scabbling in the bottom of stability support hypovalve housing, and has groove in the middle of the bottom, has increased the resistance that foundation of sea floor soil is provided greatly, can effectively guarantee the stability on the throne of submarine pipeline;
(4) internal surface of stability support agrees with mutually with the outer surface of spherical buckle arrestor, and this can produce in batches by the mould that agrees with inside and outside the cover, thereby simplified manufacturing technique reduces manufacture cost;
(5) mounting process of spherical buckle arrestor and stability support is simple, can adopt production line to install, thereby increase work efficiency, and reduces construction cost;
(6) stable support can be carried out strong protection to the weld seam at spherical buckle arrestor two ends, slows down the corrosion and the cracking destruction of weld seam greatly;
(7) stability is supported on has increased the anti-bend of spherical buckle arrestor effect to a certain extent, has the effect of " secondary anti-bend ", thereby has improved the reliability of spherical buckle arrestor, and the ability of tackling some unexpected abominable situation.
Description of drawings
Fig. 1 is for only assembling the front view and the sectional view of certain section submarine pipeline of spherical buckle arrestor;
Fig. 2 is for assembling the front view of spherical buckle arrestor and stable certain section submarine pipeline that supports simultaneously;
Fig. 3 is the A-A sectional drawing among Fig. 2;
Fig. 4 is the B-B sectional drawing among Fig. 2;
Fig. 5 is the hypovalve housing that stability supports among Fig. 2, is the worm's eye view that stability supports among Fig. 2.
The number in the figure explanation:
1 submarine pipeline; 2 spherical buckle arrestors; 3 weld seams; The epivalve housing that 4 stability support; The hypovalve housing that 5 stability support;
6 eye plates; 7 bolts
Embodiment
The invention provides a kind of submarine pipeline buckle arrestor with the stability support.The stable submarine pipeline buckle arrestor that supports of this kind band mainly comprises the spherical buckle arrestor that is positioned at inside and is positioned at outside stability support.The cross section of spherical buckle arrestor is a ring, and internal diameter is identical with internal diameter of the pipeline, and the cross section external diameter changes vertically, dwindles gradually from the middle to both ends, and the external diameter of two end sections is identical with outer diameter tube, and from appearance, this buckle arrestor is elliposoidal.The variform uniform section housing of outsourcing two lobes around spherical buckle arrestor, two lobe housings closely connect as the stability support by bolt.The two lobe housing cross sections that stability supports all are semi-round ring shape, but the middle groove that has in bottom is scabbled in the bottom of hypovalve housing; Two lobe shell rim all have overhanging eye plate, and bolt passes eye plate, two lobe housings are fused, and be close on the outer surface of pipeline and spherical buckle arrestor.
Buckle arrestor of the present invention, the thickest that is positioned at inner spherical buckle arrestor is got 2-4 pipeline wall thickness doubly, in addition, should consider the thickness of concrete weighted coating when choosing wall thickness, preferably equates with the thickness of weight coating.The total length of spherical buckle arrestor is got 1.5-2.5 outer diameter tube doubly; During installation spherical buckle arrestor is put into the specified position of pipeline, both are coaxial sequence after, fetch by butt joint in the joint pipelines on two sides coupled together.
The two lobe shell inner surface that stability supports should be agreed with mutually with the outer surface of submarine pipeline and spherical buckle arrestor, for the ease of installing, can leave slight clearance between the inner and outer surface, but can not surpass 1～2% of outer diameter tube, can pour into cement, mulling epoxy resin and polyurethane etc. in the gap; Otherwise in a single day cripling takes place and causes spherical buckle arrestor to lose efficacy in submarine pipeline, if the two lobe housings that stability supports can not tightly be attached to the outer surface of submarine pipeline and spherical buckle arrestor, then stable support can lose the effect of " secondary anti-bend ".The shell length that stability supports should guarantee to cover the weld seam at spherical buckle arrestor two ends at least, and choosing of external diameter can be determined according to the thickness or the required weight under water of pipeline stability on the throne of concrete weighted coating.
Obtain a balance in pipeline generation buckling failure and the unstability possibility on the throne between definite need and the device of this local strengthening device arrangement pitch, when determining arrangement pitch, need take all factors into consideration following factor: the cost of the cost of pipeline total length, outer diameter tube, wall thickness and pipeline unit length, the laying depth of water, replacement and recovery unit length damaged pipe etc. at this installation cost.
The making and the installation method of the spherical buckle arrestor that this band stability supports may further comprise the steps:
(1) according to the external diameter and the wall thickness dimension of given submarine pipeline, make the two lobe uniform section housings that spherical buckle arrestor and stability support, this can produce in batches by the mould that agrees with inside and outside the cover.
(2) submarine pipeline is generally taked prefabricate, utilizes pipe laying barge etc. to weld and lay at sea, and therefore, the spherical buckle arrestor of this invention can be installed in the welding process of pipe laying barge.
When (3) the stability support being installed, at first the hypovalve housing is close to the bottom of spherical buckle arrestor,, the epivalve housing is docked with manned hypovalve housing by the outer surface of eye plate position and spherical buckle arrestor; Two lobe housings are fixed by four bolts, and bolt passes eye plate two lobe housings are fused, and wraps in the outside of spherical buckle arrestor and submarine pipeline outward.
(4) two lobe shell inner surface of stability support and the micro-gap between submarine pipeline and the spherical buckle arrestor outer surface are filled by pouring into cement, mulling epoxy resin and polyurethane etc.
(5) lay concrete weighted coating installing the pipe section of stability beyond supporting, the end that stability supports is close in the end of concrete weighted coating; If the outer surface of concrete weighted coating can not be concordant with the outer surface that stability supports, can consider after the pipe laying barge stretcher, to install stability and support, to guarantee that pipeline can pass through stretcher smoothly.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
Be equipped with the front view and the sectional view of certain section submarine pipeline of spherical buckle arrestor, as shown in Figure 1.The spherical buckle arrestor 2 of submarine pipeline involved in the present invention, at first spherical buckle arrestor 2 is put into the specified position of pipeline 1 when mounted, both are coaxial sequence after, 3 fetch by butt joint pipelines on two sides are coupled together in the joint, adopt fillet welding that the outer surface of spherical buckle arrestor 2 and the outer surface of pipeline 1 are carried out good welds then.
Be equipped with the front view of certain section submarine pipeline of spherical buckle arrestor and stability support simultaneously, as shown in Figure 2.Epivalve housing 4 and hypovalve housing 5 edges that stability supports all have overhanging eye plate 6, and bolt 7 passes eye plate 6, two lobe housings is fused, and be close to the outside of pipeline 1 and spherical buckle arrestor 2; The cross section of two lobe housings all is semi-round ring shape, but processing has been carried out scabbling in the bottom of hypovalve housing 5, and the middle part has groove, is used to increase the resistance that foundation of sea floor soil is provided, thereby guarantees the stability on the throne of submarine pipeline; Spherical buckle arrestor and stable support can be used the production line precasting process, produce in batches by the mould that agrees with inside and outside the cover, and steel grade can be selected API 5L X80 for use.
Fig. 3 and Fig. 4 are respectively spherical buckle arrestor and stable A-A and the B-B sectional drawing that supports among Fig. 2, and they have shown the side structure form of this invention.Before the pipe laying concrete weighted coating, spherical buckle arrestor 2 is installed at first; When the stability support is installed, at first hypovalve housing 5 is close to the bottom of spherical buckle arrestor 2, by the position of eye plate 6 and the outer surface of spherical buckle arrestor 2, epivalve housing 4 is docked with manned hypovalve housing 5; Two lobe housings are fixed by four bolts 7, and bolt 7 passes eye plate 6 two lobe housings are fused, and wraps in the outside of submarine pipeline 1 and spherical buckle arrestor 2 outward; Two lobe shell inner surface that stability supports and the micro-gap between submarine pipeline and the spherical buckle arrestor outer surface are filled by pouring into cement, mulling epoxy resin and polyurethane etc.
Claims (6)
1. submarine pipeline buckle arrestor that supports with stability, be fixed on during use between the two-section submarine pipeline, comprise that stability supports and fixing within it spherical buckle arrestor, described buckle arrestor is elliposoidal, its cross section is a ring, internal diameter is identical with internal diameter of the pipeline, the cross section external diameter changes vertically, dwindles gradually from the middle to both ends, and the cross section external diameter at buckle arrestor two ends is identical with outer diameter tube, described stability supports and comprises the prismatic housing of two lobes, one is upper shell, and one is lower shell body, and upper shell is a semi-round ring shape, lower shell body is the semi-round ring shape that scabble the bottom, has groove in the middle of the bottom; The edge of two lobe housings all has overhanging eye plate, and bolt passes eye plate, two lobe housings is fused, and be close on the outer surface of pipeline and spherical buckle arrestor.
2. the submarine pipeline buckle arrestor that band stability according to claim 1 supports, it is characterized in that, the internal surface of the two lobe housings that described stability supports agrees with mutually with the outer surface of submarine pipeline and spherical buckle arrestor, leaves 1～2% the slit that is no more than outer diameter tube between the inner and outer surface.
3. the submarine pipeline buckle arrestor that band stability according to claim 1 supports is characterized in that the thickest of described spherical buckle arrestor is got 2-4 pipeline wall thickness doubly, and total length is got 1.5-2.5 outer diameter tube doubly.
4. the fixation method of the submarine pipeline buckle arrestor that supports of an above-mentioned band stability may further comprise the steps:
(1), makes spherical buckle arrestor and constitute the two lobe uniform section housings that stability supports according to the external diameter and the wall thickness dimension of given submarine pipeline;
(2) spherical buckle arrestor is welded between two sections submarine pipelines;
When (3) the stability support being installed, at first the hypovalve housing is close to the bottom of spherical buckle arrestor,, the epivalve housing is docked with manned hypovalve housing by the outer surface of eye plate position and spherical buckle arrestor; Two lobe housings are fixed by bolt, and bolt passes eye plate two lobe housings are fused, and wraps in the outside of spherical buckle arrestor and submarine pipeline outward;
(4) at two lobe shell inner surface of stability support and the micro-gap between submarine pipeline and the spherical buckle arrestor outer surface, fill by pouring into cement, mulling epoxy resin and polyurethane etc.;
(5) lay concrete weighted coating installing the pipe section of stability beyond supporting, the end that stability supports is close in the end of concrete weighted coating.
5. the fixation method of the spherical buckle arrestor of submarine pipeline that band stability according to claim 4 supports, it is characterized in that, in (5) step,, stability then is installed after the pipe laying barge stretcher supports if the outer surface of concrete weighted coating can not be concordant with the outer surface that stability supports.
6. the submarine pipeline buckle arrestor that band stability according to claim 4 supports, it is characterized in that, the internal surface of the two lobe housings that described stability supports agrees with mutually with the outer surface of submarine pipeline and spherical buckle arrestor, leaves 1～2% the slit that is no more than outer diameter tube between the inner and outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106030252A CN102062258B (en) | 2010-12-23 | 2010-12-23 | Submarine pipeline bending arrestor with stability support and fixing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106030252A CN102062258B (en) | 2010-12-23 | 2010-12-23 | Submarine pipeline bending arrestor with stability support and fixing method thereof |
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| CN102062258A true CN102062258A (en) | 2011-05-18 |
| CN102062258B CN102062258B (en) | 2012-07-04 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705580A (en) * | 2012-06-21 | 2012-10-03 | 天津大学 | Multi-fixation buckling buckle arrestor and method for inhibiting buckle propagation |
| CN103162013A (en) * | 2013-02-28 | 2013-06-19 | 天津大学 | Combined strengthening type bulking-preventing device capable of preventing submarine pipeline from bulking-propagation |
| CN103423514A (en) * | 2013-07-18 | 2013-12-04 | 天津大学 | Welded submarine pipeline buckling stopper with base |
| CN104455728A (en) * | 2014-11-25 | 2015-03-25 | 天津大学 | Method for controlling lateral displacement of submarine pipeline |
| CN105276287A (en) * | 2014-07-10 | 2016-01-27 | 中国石油大学(北京) | Submarine pipeline clipping-in type buckle arrestor based on fiber reinforced plastics (FRP) |
| CN105760569A (en) * | 2015-12-30 | 2016-07-13 | 中国海洋大学 | Snap-in type buckle arrestor fixing bolt size determining method |
| CN106641441A (en) * | 2017-02-23 | 2017-05-10 | 中国石油大学(北京) | Anti-corrosion buckle arrestor capable of suppressing vortex-induced vibration and resisting crushing expansion |
| 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 |
| 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 |
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| US3096105A (en) * | 1960-09-09 | 1963-07-02 | Dresser Ind | Split arrestor having circumferentially extending grain structure for welded pipelines having longitudinally extending grain structure |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705580A (en) * | 2012-06-21 | 2012-10-03 | 天津大学 | Multi-fixation buckling buckle arrestor and method for inhibiting buckle propagation |
| CN103162013A (en) * | 2013-02-28 | 2013-06-19 | 天津大学 | Combined strengthening type bulking-preventing device capable of preventing submarine pipeline from bulking-propagation |
| CN103423514A (en) * | 2013-07-18 | 2013-12-04 | 天津大学 | Welded submarine pipeline buckling stopper with base |
| CN103423514B (en) * | 2013-07-18 | 2015-06-17 | 天津大学 | Welded submarine pipeline buckling stopper with base |
| CN105276287A (en) * | 2014-07-10 | 2016-01-27 | 中国石油大学(北京) | Submarine pipeline clipping-in type buckle arrestor based on fiber reinforced plastics (FRP) |
| CN104455728B (en) * | 2014-11-25 | 2016-06-29 | 天津大学 | A kind of submarine pipeline lateral displacement control method |
| CN104455728A (en) * | 2014-11-25 | 2015-03-25 | 天津大学 | Method for controlling lateral displacement of submarine pipeline |
| CN105760569A (en) * | 2015-12-30 | 2016-07-13 | 中国海洋大学 | Snap-in type buckle arrestor fixing bolt size determining method |
| CN105760569B (en) * | 2015-12-30 | 2019-06-07 | 中国海洋大学 | Buckle into formula buckle arrestor fixing bolt method for determining size |
| CN106641441A (en) * | 2017-02-23 | 2017-05-10 | 中国石油大学(北京) | Anti-corrosion buckle arrestor capable of suppressing vortex-induced vibration and resisting crushing expansion |
| 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 |
| CN107687558B (en) * | 2017-09-04 | 2020-02-18 | 中国海洋大学 | Combined buckle arrestor for submarine fiber reinforced composite flexible pipe |
| 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 |
| CN108453971B (en) * | 2018-04-08 | 2020-06-02 | 大连理工大学 | Marine flexible pipe cable bending preventer and manufacturing method thereof |
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| CN102062258B (en) | 2012-07-04 |
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