EP4053012A1 - Système de démontage intégré et procédé de démontage pour construction en mer de grandes dimensions - Google Patents
Système de démontage intégré et procédé de démontage pour construction en mer de grandes dimensions Download PDFInfo
- Publication number
- EP4053012A1 EP4053012A1 EP20910667.3A EP20910667A EP4053012A1 EP 4053012 A1 EP4053012 A1 EP 4053012A1 EP 20910667 A EP20910667 A EP 20910667A EP 4053012 A1 EP4053012 A1 EP 4053012A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- semi
- lifting arms
- lifting
- submersible vessel
- offshore structure
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 20
- 230000007246 mechanism Effects 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/10—Arrangement of ship-based loading or unloading equipment for cargo or passengers of cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
- B63C7/006—Emptying the contents of sunken, stranded, or disabled vessels, e.g. by engaging the vessel; Underwater collecting of buoyant contents, such as liquid, particulate or gaseous contents, escaping from sunken vessels, e.g. using funnels, or tents for recovery of escaping hydrocarbons
Definitions
- the present disclosure relates to an integrated disassembling and assembling system for a large offshore structure and a disassembling and assembling method, and belongs to the technical field of ocean engineering.
- a blocked hoisting method and a single-vessel float-over method are usually used to disassemble or assemble these facilities.
- the blocked hoisting method requires offshore overall docking and system debugging, which take a long time.
- offshore debugging costs are far higher than onshore debugging costs.
- the single-vessel float-over method has a great limitation on an ultra-large offshore platform exceeding 10,000 tons. First, weight of the ultra-large offshore platform is limited by loading capacity of a single vessel. Second, applicability of the single-vessel float-over method is limited by a platform span, a support structure, space, and the like.
- the present disclosure provides an integrated disassembling and assembling system for a large offshore structure and a disassembling and assembling system to implement lifting jointly through fast de-ballasting for an entire vessel and fast lifting of hydraulic systems of lifting arms, such that an entire disassembling process takes a short time and has high efficiency.
- the integrated disassembling and assembling system for a large offshore structure may include a semi-submersible vessel I, a semi-submersible vessel II, multiple lifting arms I, multiple lifting arms II, and an offshore structure.
- a support I and a support II for the lifting arms I may be mounted on the semi-submersible vessel I through bolts.
- a support I and a support II for the lifting arms II may be mounted on the semi-submersible vessel II through bolts.
- the lifting arms I may be arranged on the semi-submersible vessel I in parallel.
- the lifting arms II may be arranged on the semi-submersible vessel II in parallel.
- the lifting arms I and the lifting arms II may be provided with a lifting system having a three-way motion compensation function.
- the lifting system may be provided with locking mechanisms for the lifting arms I and the lifting arms II. Before lifting, the locking mechanisms lock the lifting arms I and the lifting arms II may be in a front-back direction and a left-right direction; then, a lifting mechanism may lift the offshore structure up.
- the lifting system having the three-way motion compensation function further include a mobile cart I and a mobile cart II.
- a bottom at a front end of each of the lifting arms I/lifting arms II may be mounted at an upper end of the mobile cart I.
- a rear end of each of the lifting arms I/lifting arms II may be mounted at an upper end of the mobile cart II.
- a lower end of the mobile cart I is mounted on the support I.
- a lower end of the mobile cart II is mounted on the support II.
- the support I and the support II are respectively fixed on the semi-submersible vessel I and the semi-submersible vessel II.
- the lifting mechanism for driving a lifted object to move up and down is hinged to the front end of each of the lifting arms I/lifting arms II.
- a road wheel set and a road wheel are mounted on each of the mobile cart I and the mobile cart II.
- the road wheel set is mounted on rails that are of the lifting arms I/lifting arms II and are used for limiting up-down movement of a main arm.
- the road wheel is mounted on a rail of the support I or the support II.
- the lifting arms I/lifting arms II move left and right through the road wheel set, and move front and back through the road wheel.
- a locking mechanism meshed with a fixing rack of each of the lifting arms I/lifting arms II is mounted at the upper end of the mobile cart I; a locking mechanism meshed with a fixing rack of the support I is mounted at the lower end of the mobile cart I.
- each of the locking mechanisms includes a locking rack whose section takes the shape of an inverted trapezoid.
- the locking rack is disposed on a side of the fixing rack.
- Two adjustment hydraulic cylinders are hinged to a bottom of the locking rack.
- a structure defined by the adjustment hydraulic cylinders has a certain included angle and takes the shape of inverted V.
- Two locking sliders are movably disposed on a left side and a right side of the locking rack.
- Each of the locking sliders slides uni-directionally along a slide rail and is provided with an inclined surface matched with the locking rack.
- the adjustment hydraulic cylinders push the locking rack into the fixing rack; the locking rack and the fixing rack are meshed with each other.
- the inclined surfaces of the two locking sliders are fitted with inclined surfaces of the locking rack.
- a dynamic positioning (DP) system is provided on each of the semi-submersible vessel I and the semi-submersible vessel II that are respectively disposed on two sides of the offshore structure.
- DP dynamic positioning
- the lifting mechanism is static relative to the offshore structure before the DP systems having a positioning function and the lifting arms having a compensation function jointly implement lifting.
- the integrated disassembling and assembling system further includes a semi-submersible vessel III.
- the lifting arms of the semi-submersible vessel I and the semi-submersible vessel II act simultaneously to unload the offshore structure to the semi-submersible vessel III.
- controllable cabins are provided on each of the semi-submersible vessel I and the semi-submersible vessel II, and a waterline of each of the cabins is controlled by a pneumatic pump.
- the cabins include a bottom cabin, as well as a middle cabin, a left cabin, and a right cabin that are disposed above the bottom cabin; each of the left cabin and the right cabin includes a high-position cabin and a low-position cabin.
- the disassembling and assembling method for the integrated disassembling and assembling system for a large offshore structure in the present disclosure may include the following steps:
- an integrated disassembling and assembling system for a large offshore structure includes a semi-submersible vessel I 1, a semi-submersible vessel II 3, multiple lifting arms I 2, multiple lifting arms II 4, and an offshore structure 5, where a support I 6 and a support II 7 for the lifting arms I 2 are mounted on the semi-submersible vessel I 1 through bolts.
- a support I 6 and a support II 7 for the lifting arms II 4 are mounted on the semi-submersible vessel II 3 through bolts.
- the lifting arms I 2 are arranged on the semi-submersible vessel I 1 in parallel; the lifting arms II 4 are arranged on the semi-submersible vessel II 3 in parallel.
- the lifting arms I 2 and the lifting arms II 4 are provided with a lifting system having a three-way motion compensation function.
- the lifting system is provided with locking mechanisms for the lifting arms I 2 and the lifting arms II 4. Before lifting, the locking mechanisms lock the lifting arms I 2 and the lifting arms II 4 in a front-back direction and a left-right direction, and then, a lifting mechanism 8 lifts the offshore structure 5 up.
- the lifting system having the three-way motion compensation function further includes a mobile cart I 10 and a mobile cart II 11, where a bottom at a front end of each of the lifting arms I 2/lifting arms II 4 is mounted at an upper end of the mobile cart I 10. A rear end of each of the lifting arms I 2/lifting arms II 4 is mounted at an upper end of the mobile cart II 11. A lower end of the mobile cart I 10 is mounted on the support I 6. A lower end of the mobile cart II 11 is mounted on the support II 7.
- the support I 6 and the support II 7 are respectively fixed on the semi-submersible vessel I 1 and the semi-submersible vessel II 3.
- the lifting mechanism 8 for driving a lifted object to move up and down is hinged to the front end of each of the lifting arms I 2/lifting arms II 4.
- a road wheel set and a road wheel are mounted on each of the mobile cart I 10 and the mobile cart II 11.
- the road wheel set is mounted on rails that are on the lifting arms I 2/lifting arms II 4 and are used for limiting up-down movement of a main arm.
- the road wheel is mounted on a rail of the support I 6 or the support II 7.
- the lifting arms I 2/lifting arms II 4 move left and right through the road wheel set and move front and back through the road wheel.
- a locking mechanism meshed with a fixing rack 13 of each of the lifting arms I 2/lifting arms II 4 is mounted at the upper end of the mobile cart I 10.
- a locking mechanism meshed with a fixing rack 13 of the support I 6 is mounted at the lower end of the mobile cart I 10.
- each of the locking mechanisms includes a locking rack 12 whose section takes the shape of an inverted trapezoid, where the locking rack 12 is disposed on a side of the fixing rack 13.
- Two adjustment hydraulic cylinders 14 are hinged to a bottom of the locking rack 12.
- a structure defined by the adjustment hydraulic cylinders has a certain included angle and takes the shape of inverted V.
- Two locking sliders 15 are movably disposed on a left side and a right side of the locking rack 12.
- Each of the locking sliders 15 slides uni-directionally along a slide rail and is provided with an inclined surface matched with the locking rack 12.
- the adjustment hydraulic cylinders 14 push the locking rack 12 into the fixing rack 13; the locking rack 12 and the fixing rack 13 are meshed with each other.
- the inclined surfaces of the two locking sliders 15 are fitted with inclined surfaces of the locking rack 12.
- a dynamic positioning (DP) system is provided on each of the semi-submersible vessel I 1 and the semi-submersible vessel II 3 that are respectively disposed on two sides of the offshore structure 5.
- the offshore structure 5 is static relative to the offshore structure 5 before the DP systems having a positioning function and the lifting arms having a compensation function jointly implement lifting.
- the integrated disassembling and assembling system further includes a semi-submersible vessel III 9.
- the lifting arms of the semi-submersible vessel I 1 and the semi-submersible vessel II 3 act simultaneously to unload the offshore structure 5 to the semi-submersible vessel III 9.
- Multiple controllable cabins are provided on each of the semi-submersible vessel I 1 and the semi-submersible vessel II 3, and a waterline of each of the cabins is controlled by a pneumatic pump.
- the cabins include a bottom cabin, as well as a middle cabin, a left cabin, and a right cabin that are disposed above the bottom cabin; each of the left cabin and the right cabin includes a high-position cabin and a low-position cabin.
- a process of using the system is as follows: To disassemble the offshore structure 5, the semi-submersible vessel I 1 and the semi-submersible vessel II 3 approach the offshore structure 5 from two sides. The two semi-submersible vessels are positioned relative to the offshore structure 5 by using the DP systems of the semi-submersible vessels. The lifting arms I 2 and the lifting arms II 4 reach a lifting point of the offshore structure 5 through front-back and left-right movements. Because the positioning function of the DP systems of the semi-submersible vessels is insufficient to make the offshore structure 5 static, a three-way compensation function of the lifting arms needs to be enabled at this time.
- the semi-submersible vessel I 1 and the semi-submersible vessel II 3 are de-ballasted, such that 5% of the load of the offshore structure is transferred to the lifting arms and the semi-submersible vessels.
- the locking mechanisms lock the lifting arms I 2 and lifting arms II 4 in the front-back direction and the left-right direction; and then, the lifting mechanism 8 lifts the offshore structure 5 up fast.
- the semi-submersible vessel I 1 and the semi-submersible vessel II 3 carry the offshore structure 5 and move synchronously to leave a supporting position of the offshore structure 5.
- the semi-submersible vessel III 9 moves to a position between the semi-submersible vessel I 1 and the semi-submersible vessel II 3; and then, the lifting arms of the semi-submersible vessel I 1 and the semi-submersible vessel II 3 synchronously unload, to the semi-submersible vessel III 9, the offshore structure 5 that has been disassembled.
- the semi-submersible vessel III 9 carrying the offshore structure 5 moves to a wharf and slides ashore.
- An objective of the present disclosure is to provide an integrated disassembling and assembling method for a large offshore structure 5, which can implement disassembling or assembling of offshore structures 5, such as a jacket platform, a pile group platform, or a column leg platform, and is particularly suitable for disassembling or assembling an ultra-large platform block that exceeds one ton.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
- Ship Loading And Unloading (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201922435538.6U CN211364878U (zh) | 2019-12-30 | 2019-12-30 | 大型海上结构物一体化拆装系统 |
CN201911394244.1A CN111038662A (zh) | 2019-12-30 | 2019-12-30 | 大型海上结构物一体化拆装系统及拆装方法 |
PCT/CN2020/136068 WO2021135903A1 (fr) | 2019-12-30 | 2020-12-14 | Système de démontage intégré et procédé de démontage pour construction en mer de grandes dimensions |
Publications (3)
Publication Number | Publication Date |
---|---|
EP4053012A1 true EP4053012A1 (fr) | 2022-09-07 |
EP4053012A4 EP4053012A4 (fr) | 2023-01-18 |
EP4053012B1 EP4053012B1 (fr) | 2024-02-21 |
Family
ID=76687032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20910667.3A Active EP4053012B1 (fr) | 2019-12-30 | 2020-12-14 | Système de démontage intégré et procédé de démontage pour construction en mer de grandes dimensions |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4053012B1 (fr) |
WO (1) | WO2021135903A1 (fr) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100162935A1 (en) * | 2006-12-13 | 2010-07-01 | Jon Khachaturian | Marine Lifting Apparatus |
CN203473191U (zh) * | 2013-06-04 | 2014-03-12 | 中国人民解放军总后勤部军事交通运输研究所 | 用于浅水浮体双锚对拉定位的辅助装置 |
CN105151239A (zh) * | 2015-05-19 | 2015-12-16 | 中国海洋石油总公司 | 用于双船浮托整体拆除海上平台上部组块的船侧支撑结构 |
CN105035260B (zh) * | 2015-05-19 | 2017-06-16 | 中国海洋石油总公司 | 利用双船浮托整体拆除海上弃置平台上部组块的方法 |
US20210078840A1 (en) * | 2017-03-31 | 2021-03-18 | Johan F. Andresen | A lifting device |
CN109799519A (zh) * | 2019-02-27 | 2019-05-24 | 上海交通大学 | 一种双船吊装拆除海上平台用光学定位机构 |
CN110155273B (zh) * | 2019-05-23 | 2020-10-09 | 大连海事大学 | 立式双驳抬撬钢绞线液压同步提升沉船打捞系统 |
CN211364878U (zh) * | 2019-12-30 | 2020-08-28 | 山东海洋能源有限公司 | 大型海上结构物一体化拆装系统 |
CN111038662A (zh) * | 2019-12-30 | 2020-04-21 | 山东海洋能源有限公司 | 大型海上结构物一体化拆装系统及拆装方法 |
-
2020
- 2020-12-14 EP EP20910667.3A patent/EP4053012B1/fr active Active
- 2020-12-14 WO PCT/CN2020/136068 patent/WO2021135903A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
WO2021135903A1 (fr) | 2021-07-08 |
EP4053012B1 (fr) | 2024-02-21 |
EP4053012A4 (fr) | 2023-01-18 |
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