CN103132521B - Undersea suction anchor - Google Patents
Undersea suction anchor Download PDFInfo
- Publication number
- CN103132521B CN103132521B CN201310091856.XA CN201310091856A CN103132521B CN 103132521 B CN103132521 B CN 103132521B CN 201310091856 A CN201310091856 A CN 201310091856A CN 103132521 B CN103132521 B CN 103132521B
- Authority
- CN
- China
- Prior art keywords
- anchor
- barrel
- main cylinder
- skirt
- sheath skirt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000969 carrier Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 6
- 230000003628 erosive Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002169 extracardiac Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0078—Suction piles, suction cans
Abstract
The invention discloses an undersea suction anchor which comprises a main drum, a top face of the main barrel is sealed, a lower end of the main barrel is opened, and a main barrel drainage hole is arranged on the top face of the main drum. The undersea suction anchor is characterized in that a barrel skirt is movably sleeved on the main drum, the barrel skirt comprises a horizontal top face and a barrel-shaped lateral wall, a barrel skirt drainage hole is formed in the horizontal top face of the barrel skirt, a telescopic hook locating the barrel skirt at the upper portion of the main barrel is arranged on the barrel-shaped lateral wall at the upper portion of the main barrel, an anchor ring concentric with the main barrel is arranged at the upper end of the main barrel, anchor branches are evenly arranged on the anchor ring, one ends of the anchor branches are hinged to the anchor ring, and the other ends of the anchor branches are hinged to the barrel skirt through inclined support rods. The whole vertical section of the suction anchor is in an umbrella shape, in the sinking process of the anchor body, along with landing-on-seabed of the barrel skirt, the anchor branches are driven by the inclined support rods to be gradually opened, and after the main barrel sinking is finished, the anchor branches cling to the surface of the seabed in a horizontal extending mode. The undersea suction anchor can improve the integral stability of the suction anchor, increases pulling resistance and horizontal bearing force, and reinforces wave-corrosion-resistance performance.
Description
Technical field
The invention belongs to offshore wind farm engineering and field of ocean engineering, relating to offshore blower foundation, ocean platform mooring, keg float location, beacon, jacket structure basis, is a kind of undersea suction anchor specifically.
Background technology
Along with the accelerated development of Marine oil and gas resource exploitation and the emergence day by day of offshore wind power generation, the basic engineering of marine drilling platform and marine wind electric field becomes an important topic in this field.Suction anchor, as the novel offshore structure facility of one, has been widely used in the fields such as ship mooring, keg float location, storage facility, beacon, jacket and ocean platform.Suction anchor foundation class is similar to rigid projectiles, and apply the barrel shape structure that maximum suction anchors is a kind of top closure, lower ending opening in Practical Project, anchor cylinder side-wall material is steel, and anchor cylinder top cover leaves suction eye to connect the pipeline that draws water.Its sinking comprises two stages successively: be first deadweight and load effect under pressure sink pass through the stage; Next relies on submersible pump to continue to draw water the inside and outside pressure reduction produced on suction anchor and the suction caused is heavy passes through the stage.
The suction anchor used both at home and abroad at present mainly contains: gravity suction anchor, Double-cylinder type suction anchor, self-installed suction anchor etc.
Type gravity suction anchor is that traditional anchor top sheet steel structure is changed into reinforced concrete structure or adds the steel work of ballast, thus increase sinker power and the sinker degree of depth, but because it is from great, use the drawback that middle existence is installed and reclaimer operation is complicated, cost is high, moreover, its counter weight construction is positioned at more than mud face, seabed, and eddy flow washes away the soil body, and the phenomenon reducing suction anchor anchored force is inevitable.
Double-cylinder type suction anchor belongs to the remodeling of the barrel-shaped suction anchor of water floating body mooring gear, namely on traditional single-cylinder type suction anchor basis, adds diameter urceolus little greatly and highly, then binds with common top board and form bitubular anchor.Although this structure can improve the vertical bearing capacity of anchor body but can not effectively improve the standard bearing capacity and resistance to overturning, too large effect be there is no yet to the erosion improving seabed soil.
The feature of self-installed suction anchor is by realizing sink smoothly to controlled water injection in sealed top cabin, by to cabin internal drainage, exhaust decompression, form the upper and lower pressure reduction in anchor top, realize suction injection, its advantage is " self-floating towing, sink smoothly ", but its recycling rate of waterused is low, also not too large improvement in bearing capacity and resistance to overturning.
Summary of the invention
The present invention is the problems referred to above solving prior art existence, provides a kind of undersea suction anchor, improves the resistance to overturning of suction anchor, increases uplift resistance, horizontal bearing capacity and anti-wave erosion ability, and simple installation, recycling rate of waterused is high.
The object of the invention is to be achieved through the following technical solutions:
A kind of undersea suction anchor, comprise that end face is closed, the main cylinder of lower ending opening, main cylinder end face arranges main cylinder drain hole, it is characterized in that, outer kink one sheath skirt of described main cylinder, described sheath skirt comprises horizontal top surface and cylindrical sidewall, described sheath skirt horizontal top surface arranges sheath skirt drain hole, the cylindrical sidewall on described main cylinder top is arranged the telescopic hook described sheath skirt being positioned at described main cylinder top, the anchor ring of one and main cylinder concentric is set in main cylinder upper end, anchor ring evenly arranges anchor branch, and one end and the anchor ring of described anchor branch are hinged, the other end by hound and sheath skirt hinged.
Improvement to technique scheme: described anchor ring diameter is consistent with described sheath skirt cylindrical sidewall diameter, described anchor ring is fixed together by carrier bar and main cylinder upper end.
Further improvement to technique scheme: described anchor branch is uniform foraminate metal sheet roof covering.
Further improvement to technique scheme: described anchor branch upwards extends to level at most, described anchor branch is contracted to plumbness at most downwards.
Further improvement to technique scheme: described hound length is 1/2 of anchor branch length, and one end of described hound is hinged on the outer of sheath skirt end face, the other end of hound and the centre of described anchor branch hinged.
Further improvement to technique scheme: the length of described anchor branch is 1-1.5 times of main cylinder diameter, the cylindrical sidewall diameter of described sheath skirt is 1.5-2 times of the cylindrical sidewall diameter of described main cylinder.
The present invention compared with prior art has the following advantages and good effect:
Seabed provided by the present invention umbrella-type suction anchor adds the resistance to overturning of suction anchor by the design of sheath skirt and anchor branch, prevents seabed soil around main cylinder to suffer the harm of wave erosion.The interpolation of sheath skirt increases the contact area of whole anchor body and the soil body, thus adds frictional resistance, and the uplift resistance of suction anchor and horizontal bearing capacity are significantly increased.Sheath skirt is again independent design, can carry out replacing allotment according to different engineering, avoids sheath skirt in the past and is connected with main cylinder one, the drawback that can not change.Suction anchor is initially sinking the stage, and the free lowering of sheath skirt is positioned at the lower end of main cylinder, overcomes the top-heavy defect of traditional suction anchor, under keep steady, be easy to location.The lasting dynamic response of anchor branch before anchor body arrives target depth well ensure that the subsidence velocity of main cylinder, can avoid the appearance of " soil plug " phenomenon.After suction anchor sinks to terminating, anchor branch and sea bed mud face are affixed, and while the erosion of control sea bed, constitute entirety, add the ability of main cylinder overturning or slip resistance analysis, also have energy dissipating effect simultaneously to dynamic loadings such as wind, wave, streams with main cylinder.The design of telescopic hook ensure that anchor branch is in open configuration all the time upper pulling out in removal process, and the buoyancy of anchor branch alleviates recovery difficult, reduces cost.
Accompanying drawing explanation
Fig. 1 is the stereogram of a kind of seabed of the present invention umbrella-type suction anchor;
Fig. 2 is the sectional drawing along cylinder axis main in Fig. 1;
Fig. 3 is the anchor branch full extension state top view of a kind of seabed umbrella-type suction anchor;
Fig. 4 is the anchor branch not yet deployed condition schematic diagram of a kind of seabed umbrella-type suction anchor;
Fig. 5 is the schematic diagram in the anchor branch stretching process of a kind of seabed umbrella-type suction anchor;
Fig. 6 is the anchor branch full extension view of a kind of seabed umbrella-type suction anchor.
In figure: the main cylinder of 1-, 2-sheath skirt, 3-anchor ring, 4-anchor branch, 5-hound, 6-telescopic hook, 7-carrier bar, the main cylinder drain hole of 8-, 9-sheath skirt drain hole.
Detailed description of the invention
See accompanying drawing 1-Fig. 3, the embodiment of a kind of seabed of the present invention umbrella-type suction anchor, comprises that end face is closed, the main cylinder 1 of lower ending opening, and main cylinder 1 end face arranges main cylinder drain hole 8.At main cylinder 2 outer kink one sheath skirt 2, described sheath skirt 2 comprises horizontal top surface and cylindrical sidewall, and described sheath skirt horizontal top surface arranges sheath skirt drain hole 9.The cylindrical sidewall on main cylinder 1 top is symmetrical arranged the telescopic hook 6 that described sheath skirt is positioned at described main cylinder top by two.Arrange the anchor ring 3 of one and main cylinder 1 concentric in main cylinder 1 upper end, anchor ring 3 evenly arranges anchor branch 4, and one end and the anchor ring 3 of described anchor branch 4 are hinged, and the other end is hinged by hound 5 and sheath skirt 2.Anchor branch 4 is uniform foraminate metal sheet roof coverings, and anchor branch 4 upwards extends to level at most, and described anchor branch is contracted to plumbness at most downwards.
Preferred structure is: the diameter of anchor ring 3 is consistent with sheath skirt 2 outer sidewall diameter, and described anchor ring 3 is fixed together by four carrier bars 7 and main cylinder 1 upper end.Hound 5 length is 1/2 of anchor branch 4 length, and one end of hound 5 is hinged on the outer of sheath skirt 2 end face, the other end of hound 5 and the centre of described anchor branch 4 hinged.The length of anchor branch 4 is 1-1.5 times of main cylinder 1 diameter, and the cylindrical sidewall diameter of sheath skirt 2 is 1.5-2 times of the cylindrical sidewall diameter of main cylinder 1.
Wall thickness, the draw ratio of main cylinder 1 and sheath skirt 2 can be designed as plurality of specifications according to actual demands of engineering.
Fig. 4 ~ Fig. 6 shows the Attention problems process of seabed umbrella-type suction anchor.First use loop wheel machine to be hooked on anchor ring 3, be vertically placed on by suction anchor on sea bed, main cylinder 1 is injection sea bed certain depth under deadweight with the additional force effect such as sheath skirt 2, anchor branch 4, as shown in Figure 4; Sheath skirt 2 starts to contact sea bed subsequently, at this moment main cylinder outfall 8 is closed, continues to extracardiac pumping with submersible pump, reduce the pressure of main cylinder 1 inside, the lower penetration force that inside and outside pressure reduction produces impels suction anchor to continue to sink, and at this moment anchor branch 4 slowly can open under the drive of hound 5, as shown in Figure 5; Along with drawing water continuously, suction anchor keeps heavy passing through, till the inside top surface of main cylinder 1 and sheath skirt 2 all contacts with sea bed mud face, now, sheath skirt 2 is blocked by telescopic hook 6, forms entirety with main cylinder 1, anchor branch 4 also all opens, and is tightly affixed with sea bed face, as shown in Figure 6; Finally, shed submersible pump, main cylinder 1 inside and outside differential pressure dribbles, and closes pump mouth when internal pressure returns to ambient pressure, and suction anchor is installed and terminated.
Because the sheath skirt 2 of peripheral hardware is independently, in practical operation, visual different engineering demand is under the prerequisite not changing main cylinder 1, replaces separately sheath skirt 2 and applies.
Anchor ring 3 is fixed on main cylinder 1, can as handle and to hang be hanging point.Anchor branch 4 is connected with anchor ring 3, and belong to half hinged, after opening angle is consistent with horizontal plane, subtended angle no longer increases, and resists the load that topples together with main cylinder 1.Anchor branch 4 the down force adding on the one hand suction anchor is set, the aperture on the other hand on it serves the effect of anti-wave erosion, and the same with sheath skirt 2, anchor branch 4 also can be replaced separately, recycle.
Sheath skirt 2 and main cylinder 1, after suction anchor has sunk, are fixed on one piece by telescopic hook 6, and in removal process, then ensure that anchor branch 4 is in open configuration all the time, the buoyancy of anchor branch 4 can alleviate working load.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned citing; those skilled in the art; in essential scope of the present invention, done change, remodeling, interpolation or replacement, also should belong to protection scope of the present invention.
Claims (3)
1. a undersea suction anchor, comprise end face to close, the main cylinder of lower ending opening, main cylinder end face arranges main cylinder drain hole, it is characterized in that, outer kink one sheath skirt of described main cylinder, described sheath skirt comprises horizontal top surface and cylindrical sidewall, described sheath skirt horizontal top surface arranges sheath skirt drain hole, the cylindrical sidewall on described main cylinder top is arranged the telescopic hook described sheath skirt being positioned at described main cylinder top, the anchor ring of one and main cylinder concentric is set in main cylinder upper end, anchor ring evenly arranges anchor branch, one end and the anchor ring of described anchor branch are hinged, the other end by hound and sheath skirt hinged, described anchor ring diameter is consistent with described sheath skirt cylindrical sidewall diameter, described anchor ring is fixed together by carrier bar and main cylinder upper end, described anchor branch is uniform foraminate metal sheet roof covering, described anchor branch upwards extends to level at most, described anchor branch is contracted to plumbness at most downwards.
2. according to undersea suction anchor according to claim 1, it is characterized in that, described hound length is 1/2 of anchor branch length, and one end of described hound is hinged on the outer of sheath skirt end face, the other end of hound and the centre of described anchor branch hinged.
3. according to the undersea suction anchor described in claim 1 or 2, it is characterized in that, the length of described anchor branch is 1-1.5 times of main cylinder diameter, and the cylindrical sidewall diameter of described sheath skirt is 1.5-2 times of the cylindrical sidewall diameter of described main cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310091856.XA CN103132521B (en) | 2013-03-21 | 2013-03-21 | Undersea suction anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310091856.XA CN103132521B (en) | 2013-03-21 | 2013-03-21 | Undersea suction anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103132521A CN103132521A (en) | 2013-06-05 |
| CN103132521B true CN103132521B (en) | 2015-01-21 |
Family
ID=48492927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310091856.XA Expired - Fee Related CN103132521B (en) | 2013-03-21 | 2013-03-21 | Undersea suction anchor |
Country Status (1)
| Country | Link |
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| CN (1) | CN103132521B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600812B (en) * | 2013-11-13 | 2015-10-07 | 青岛迪玛尔海洋工程有限公司 | With the suction anchor of attached skirts |
| CN103967011B (en) * | 2014-05-07 | 2015-12-09 | 孔超 | Callable umbrella pressure-bearing earth anchor in a kind of soft soil layer |
| CN105178325B (en) * | 2015-08-28 | 2017-11-03 | 中国海洋大学 | The installation equipment and installation method of umbrella-type sea floor suction anchor foundation |
| NL2018650B1 (en) * | 2016-04-05 | 2018-03-09 | Spt Equipment B V | SCOUR PROTECTION FOR SUCTION PILE, e.g. PILE LOWERTNG OPERATED |
| CN106639896B (en) * | 2017-02-24 | 2018-08-10 | 重庆科技学院 | Deepwater drilling conduit is with brill support device and tripping in Parameters design |
| CN107031792B (en) * | 2017-03-22 | 2019-05-07 | 湖北海洋工程装备研究院有限公司 | The installation method of the reinforcement device of suction anchor, suction anchor and reinforcement device |
| CN108528638B (en) * | 2018-04-04 | 2020-04-10 | 合肥学院 | Suction injection type arc-shaped combined anchor with wing plates |
| CN108528636B (en) * | 2018-04-04 | 2020-04-10 | 合肥学院 | Suction injection type flat plate anchor with arc fixing plate |
| CN110001870B (en) * | 2019-03-26 | 2020-07-10 | 杭州中岩工程科技有限公司 | Suction anchor intermittent penetration device and penetration method |
| CN111877332A (en) * | 2020-06-17 | 2020-11-03 | 东南大学 | Seabed anchoring system |
| WO2023003476A1 (en) | 2021-07-23 | 2023-01-26 | Offshore Wind Design As | A suction anchor system |
| CN113978620B (en) * | 2021-11-24 | 2022-12-27 | 中国船舶科学研究中心 | Rapid deployment anchoring system and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349127Y (en) * | 1998-09-21 | 1999-11-17 | 天津市海王星海上工程技术有限公司 | Double-cylinder type suction anchor |
| US6240871B1 (en) * | 1999-10-18 | 2001-06-05 | Steven M. Courtheyn | Secure mooring connection anchor |
| CN201581410U (en) * | 2009-10-14 | 2010-09-15 | 山东科技大学 | Seafloor skirt-type suction anchor |
| CN102556285A (en) * | 2011-12-23 | 2012-07-11 | 浙江海洋学院普陀科学技术学院 | Net cage module anchor |
| CN202743442U (en) * | 2012-08-30 | 2013-02-20 | 余光明 | Buried reinforced concrete split-type anchor |
-
2013
- 2013-03-21 CN CN201310091856.XA patent/CN103132521B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349127Y (en) * | 1998-09-21 | 1999-11-17 | 天津市海王星海上工程技术有限公司 | Double-cylinder type suction anchor |
| US6240871B1 (en) * | 1999-10-18 | 2001-06-05 | Steven M. Courtheyn | Secure mooring connection anchor |
| CN201581410U (en) * | 2009-10-14 | 2010-09-15 | 山东科技大学 | Seafloor skirt-type suction anchor |
| CN102556285A (en) * | 2011-12-23 | 2012-07-11 | 浙江海洋学院普陀科学技术学院 | Net cage module anchor |
| CN202743442U (en) * | 2012-08-30 | 2013-02-20 | 余光明 | Buried reinforced concrete split-type anchor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103132521A (en) | 2013-06-05 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20150121 Termination date: 20160321 |