CN103423514A - Welded submarine pipeline buckling stopper with base - Google Patents
Welded submarine pipeline buckling stopper with base Download PDFInfo
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- CN103423514A CN103423514A CN2013103056485A CN201310305648A CN103423514A CN 103423514 A CN103423514 A CN 103423514A CN 2013103056485 A CN2013103056485 A CN 2013103056485A CN 201310305648 A CN201310305648 A CN 201310305648A CN 103423514 A CN103423514 A CN 103423514A
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- submarine pipeline
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- 239000000758 substrate Substances 0.000 claims abstract description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 32
- 238000005452 bending Methods 0.000 claims description 7
- 238000005493 welding type Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of laying of submarine pipelines, and relates to a welded submarine pipeline buckling stopper with a base. The bucking stopper comprises an upper section shell (1) and a lower section shell (2), wherein the upper section shell (1) and the lower section shell (2) are same in structure, and the inner diameter of the upper section shell (1) and the inner diameter of the lower section shell (2) are matched with the outer diameter of a submarine pipeline; the shells are mutually symmetrical in the axial direction, each shell comprises a middle axial supporting part (6) and hollow-out parts located on the two sides of the axial supporting part, an arched support (7) is arranged on each hollow-out part, and the top point of each arched support (7) is integrated with the axial supporting part. The buckling stopper further comprises the base (3), the base comprises a substrate, a groove (5) used for containing the submarine pipeline is formed in the middle of the substrate, and supports (4) inclined inwards are arranged on the periphery of the substrate. The buckling stopper is simple in structure, easy to machine and install, light in weight, low in cost and meanwhile capable of effectively controlling buckling spreading of the pipeline and reducing movement of the pipeline.
Description
Technical field
The invention belongs to the undersea pipe-laying technical field, relate to a kind of submarine pipeline bending arrestor of the welding type with pedestal.
Background technique
When submarine pipeline, in run duration, the flexing conquassation all likely occurs in pipeline while being corroded effect or internal pipe pressure deficiency.Clash into pipeline when pipeline is subject to third party's External Force Acting as the anchor that casts anchor, the sea bed active force, under the moment of flexure that seawater causes or other perturbed force effects, the flexing conquassation also can occur in pipeline, under extraneous Water Pressure, flexing is propagated along pipeline axial, finally causes the destruction of whole pipeline.Nowadays the oil and gas development of countries in the world is all marching to deep-sea, the abyssal environment complexity, and various external force couplings are on pipeline, once cripling appears in pipeline, flexing will be propagated very soon.
The mode that can increase pipeline wall thickness by employing in theory effectively increases the buckle propagation critical pressure of pipeline, but this can increase can roll up rolled steel dosage and pipeline weight, increases cost, infeasible economically.A method that solves the Economy of submarine pipeline buckle propagation, exactly along the length direction of the pipeline buckle arrestor (Buckle Arrestor) that arranges separated by a distance.Its working principle allows pipeline generation cripling exactly, but buckle propagation can not be crossed over buckle arrestor, so just can make cripling only betide between two buckle arrestors.Although buckle arrestor likely causes pipeline generation cripling on one section degree, kept well the integrity of pipeline, obtained reasonable balance in the middle of Security and Economy.Common welding type buckle arrestor is to buckle into the formula buckle arrestor similar, and just being connected between buckle arrestor itself and pipeline increased the twice weld seam, and the buckle arrestor effect has been strengthened in this welding, so such buckle arrestor ratio buckles into the formula buckle arrestor and is more suitable for deep underwater pipes.
The environmental load of sea bottom complex acts on pipeline, can make submarine pipeline generation lateral displacement, and pipeline is subject to the transverse bending moment effect, reduces pipeline working life, and therefore increasing the pipeline On-bottom stability is also the problem of paying close attention in current engineering.Weight under water that generally can be by improving pipeline or pipeline is buried or cover to increase underground the pipeline On-bottom stability, under Pipeline Water, the raising of weight is generally to realize by the thickness of increase pipeline coagulation soil weight coating, yet the increase of pipeline weight can propose higher requirement to the pipe laying process again; And if, by piping laying or covering, need to expend huge construction cost.
The anti-bend of pipeline and On-bottom stability relation submarine pipeline working life, effectively and with controlling economically the submarine pipeline buckle propagation and the pipeline motion has great importance for submarine pipeline engineering.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind of taking into account buckle arrestor weight and can reduce the pipeline motion, easy submarine pipeline bending arrestor is installed simultaneously.Apparatus structure of the present invention is simple, is easy to processing and installs, and buckle arrestor is lightweight, and cost is low, can effectively control the pipeline buckle propagation, and reduces the pipeline motion, realizes the unification of Economy and Security, is applicable to the deep water submarine pipeline simultaneously.
For achieving the above object, the present invention takes following technological scheme:
A kind of submarine pipeline bending arrestor of the welding type with pedestal, comprise epivalve housing (1) and hypovalve housing (2), epivalve housing (1) is identical with hypovalve housing (2) structure, and internal diameter matches with the external diameter of submarine pipeline, it is characterized in that, each housing shaft is to symmetry, includes the axially support part (6) at middle part and is positioned at the openwork part of axially support part both sides, be provided with arch support (7) at openwork part, the summit of arch support (7) and axially support are partly one; Described buckle arrestor also comprises pedestal (3), and pedestal (3) comprises substrate, is provided with to place the groove (5) of submarine pipeline at the middle part of substrate, and the surrounding of substrate is provided with intilted support (4).
Compared to existing technology, the present invention has the following advantages:
(1) the present invention is comprised of upper and lower two lobes, upper hypovalve housing is not continuum, but adopt middle " hollow out " but the local method of strengthening, in proof strength, reduce steel materials and weight, hypovalve is with a pedestal, remove pedestal, hypovalve shell construction and hypovalve shell dimension and structure are identical, can unify the upper hypovalve of casting like this, afterwards lobe body and pedestal are welded together.Afterwards upper and lower two lobes are attached on pipeline and are welded, except being welded to bending the device surrounding, at hollow out position, middle part, also can weld, can further strengthen buckle arrestor intensity like this, thereby more effectively prevent buckle propagation, guarantee the integrity of submarine pipeline integral body, greatly reduce submarine pipeline and cause that overall structure is destroyed and the economic loss that causes by cripling.
(2) hypovalve of the present invention is with pedestal, except effective supporting pipeline, when pipeline is received horizontal action of ocean current, due to base bottom and the larger area of contact of the soil body, can effectively reduce the pipeline transverse movement.Simultaneously, when the pipeline bottom produces small-sized suspended span (suspended span length is less than pedestal length), due to the existence of pedestal, the impact of the less suspended span of meeting on pipeline, and then reduce pipe vibration.
(3) this device integrates the function of controlling buckle propagation and preventing the pipeline motion, can realize the integrally manufactured of two kinds of function modules and install.
(4) the buckle arrestor manufacturing process is simple, can be by the mould batch production of casting, and simplified manufacturing technique, reduce manufacture cost.
(5) the buckle arrestor mounting process is simple, can install by production line, increases work efficiency, and reduces construction cost.
(6) there is multiple-pass weld between buckle arrestor and pipeline, strengthen the anti-bend effect, thereby be more suitable in deep underwater pipes.
The accompanying drawing explanation
Fig. 1 is the plan view of being furnished with certain section submarine pipeline of anti-bend device;
Fig. 2 is the sectional drawing of A-A shown in Fig. 1;
Fig. 3 is the plan view of being furnished with certain section submarine pipeline of anti-bend device;
Fig. 4 is the shell construction schematic diagram of hypovalve on buckle arrestor;
Fig. 5 is that anti-bend is removed the base part schematic diagram.
The number in the figure explanation:
1 buckle arrestor hypovalve housing; 2 buckle arrestor hypovalve shell constructions; 3 buckle arrestor pedestals; 4 base supports bars; 5 base recess; 6 axially support parts; 7 arch support.In Fig. 5, the thick line position means the weld seam between buckle arrestor hypovalve housing and pedestal welding.
Embodiment
Below in conjunction with drawings and Examples, to of the present invention, be described in detail.
As shown in Figure 1, the present invention includes upper and lower two lobes, as shown in Figure 2, comprise three parts: hypovalve housing 1, hypovalve shell construction 2 and pedestal 3, hypovalve is comprised of shell construction 2 and pedestal 3.Figure 4 shows that the schematic diagram of buckle arrestor shell construction, it is symmetrical about the midship section of self axial and circumferential; Shell construction is not continuum, but adopt middle " hollow out " but add the method that support part is strengthened, each housing shaft is to symmetry, include the axially support part 6 and the openwork part that is positioned at axially support part both sides at middle part, be provided with arch support 7 at openwork part, the summit of arch support 7 and axially support are partly one.Hypovalve is removed outside pedestal 3, and shell construction 2 is just the same with hypovalve housing 1, and Fig. 3 is the buckle arrestor plan view, can unify the upper hypovalve of casting like this.Afterwards shell construction 2 and pedestal 3 are welded together, Fig. 5 is the pedestal schematic diagram, and wherein thick line is weld seam.Buckle arrestor lobe body material adopts and the API5L X65 type of the identical material of deep water submarine pipeline or more high-grade X70, X80 grade steel, can guarantee like this under the condition of deep-sea, can effectively control anti-bend propagates, guarantee the safety of whole piece pipeline, pedestal 3 can be selected relatively low-grade steel, makes buckle arrestor more economically.Upper and lower two lobes, after machining, are close to pipeline up and down by it, and are welded between pipeline, and upper and lower two lobes weld together at adjacent seamed edge place, lobe body and pipeline at middle part " hollow out " position also can be welded.Adopt welding manner, be more suitable in pipelines in deep sea, adopt " hollow out " mode simultaneously, reduce steel materials and weight, thereby more effectively and economically prevent buckle propagation, guarantee the integrity of submarine pipeline integral body.
With pedestal, except effective supporting pipeline, when pipeline is received horizontal action of ocean current, due to base bottom and the larger area of contact of the soil body, can effectively reduce the pipeline transverse movement due to hypovalve.Simultaneously, when the pipeline bottom produces small-sized suspended span (suspended span length is less than pedestal length), due to the existence of pedestal, the impact of the less suspended span of meeting on pipeline, and then reduce pipe vibration.
This control submarine pipeline buckle propagation is described and reduces the method implementation process that pipeline moves below in conjunction with accompanying drawing:
(1) while carrying out the production of this anti-bend device, the shell construction shown in working drawing 4 at first respectively, due to hypovalve housing 1 and hypovalve shell construction 2 just the same, can unify to have cast.Each section thickness of shell construction is the same, should note completing the lobe body according to the actual conditions of pipeline, to guarantee the lobe physical efficiency, is fitted on pipeline.Then carry out the manufacture of pedestal 3, there is arc groove 5 at pedestal 3 base plate middle parts, 2 times protruding places of lobe body shell construction, bottom should with groove, just in time contact fully, the base plate of pedestal 3 can be unified casting, there are 4 struts 5 on pedestal four limits, the bar of strut 5 can be manufactured merely, then plays bottom and pedestal 3 base plates weld together, and top and buckle arrestor hypovalve shell construction 2 are welded.Subsequently lobe body shell construction 2 protruding places, bottom and groove 5 are welded, bottom lobe system has been made.
(2) installation of anti-bend device should be after the lobe system have been made, carry out before pipelaying work.Submarine pipeline is generally taked prefabricate, utilizes pipe laying barge etc. weld and lay at sea, and therefore, the buckle arrestor of this invention can be installed in the welding process of pipe laying barge.Upper and lower two lobes, after machining, are close to pipeline up and down by it, and are welded between welding, and upper and lower two lobes weld together at adjacent seamed edge place, at stiffening plate position, middle part, are also welded.
Claims (1)
1. the submarine pipeline bending arrestor of the welding type with pedestal, comprise epivalve housing (1) and hypovalve housing (2), epivalve housing (1) is identical with hypovalve housing (2) structure, and internal diameter matches with the external diameter of submarine pipeline, it is characterized in that, each housing shaft is to symmetry, includes the axially support part (6) at middle part and is positioned at the openwork part of axially support part both sides, be provided with arch support (7) at openwork part, the summit of arch support (7) and axially support are partly one; Described buckle arrestor also comprises pedestal (3), and pedestal (3) comprises substrate, is provided with to place the groove (5) of submarine pipeline at the middle part of substrate, and the surrounding of substrate is provided with intilted support (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310305648.5A CN103423514B (en) | 2013-07-18 | 2013-07-18 | Welded submarine pipeline buckling stopper with base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310305648.5A CN103423514B (en) | 2013-07-18 | 2013-07-18 | Welded submarine pipeline buckling stopper with base |
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| Publication Number | Publication Date |
|---|---|
| CN103423514A true CN103423514A (en) | 2013-12-04 |
| CN103423514B CN103423514B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310305648.5A Expired - Fee Related CN103423514B (en) | 2013-07-18 | 2013-07-18 | Welded submarine pipeline buckling stopper with base |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003739A (en) * | 2015-07-24 | 2015-10-28 | 天津大学 | Anchoring disk for controlling lateral movement of nakedly-laid submarine pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4364692A (en) * | 1979-12-26 | 1982-12-21 | California Institute Of Technology | Buckle arrestor for pipe using closely spaced turns of rod to form a coil |
| US4572549A (en) * | 1982-08-24 | 1986-02-25 | Cameron Iron Works, Inc. | Subsea pipelines |
| CN101696751A (en) * | 2009-11-13 | 2010-04-21 | 天津大学 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
| CN102022585A (en) * | 2010-11-17 | 2011-04-20 | 中国海洋石油总公司 | Submarine pipeline buckling preventing device, and manufacturing method and mounting method thereof |
| CN102062258A (en) * | 2010-12-23 | 2011-05-18 | 天津大学 | Submarine pipeline bending arrestor with stability support and fixing method thereof |
| CN102278530A (en) * | 2011-08-02 | 2011-12-14 | 天津大学 | Submarine pipeline buckle arrestor with guide plates |
-
2013
- 2013-07-18 CN CN201310305648.5A patent/CN103423514B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4364692A (en) * | 1979-12-26 | 1982-12-21 | California Institute Of Technology | Buckle arrestor for pipe using closely spaced turns of rod to form a coil |
| US4572549A (en) * | 1982-08-24 | 1986-02-25 | Cameron Iron Works, Inc. | Subsea pipelines |
| CN101696751A (en) * | 2009-11-13 | 2010-04-21 | 天津大学 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
| CN102022585A (en) * | 2010-11-17 | 2011-04-20 | 中国海洋石油总公司 | Submarine pipeline buckling preventing device, and manufacturing method and mounting method thereof |
| CN102062258A (en) * | 2010-12-23 | 2011-05-18 | 天津大学 | Submarine pipeline bending arrestor with stability support and fixing method thereof |
| CN102278530A (en) * | 2011-08-02 | 2011-12-14 | 天津大学 | Submarine pipeline buckle arrestor with guide plates |
Non-Patent Citations (1)
| Title |
|---|
| 汪红艳等: "深水海底管道止屈器设计研究", 《中国造船》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003739A (en) * | 2015-07-24 | 2015-10-28 | 天津大学 | Anchoring disk for controlling lateral movement of nakedly-laid submarine pipeline |
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| CN103423514B (en) | 2015-06-17 |
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