CN101807786B - Method for mounting power cable repairing final elbow - Google Patents
Method for mounting power cable repairing final elbow Download PDFInfo
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- CN101807786B CN101807786B CN2010101447118A CN201010144711A CN101807786B CN 101807786 B CN101807786 B CN 101807786B CN 2010101447118 A CN2010101447118 A CN 2010101447118A CN 201010144711 A CN201010144711 A CN 201010144711A CN 101807786 B CN101807786 B CN 101807786B
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Abstract
The invention relates to a method for mounting a power cable repairing final elbow, which is characterized by comprising the following steps of: recycling a power cable at one side of the final elbow; knotting a first knot of the power cables at two side water inlet ends of the final elbow, and connecting to a cable working rope; after connecting the power cables at two sides, moving ship forwards, and simultaneously releasing the cable working rope; stopping the ship before the top end of the final elbow reaches the tail of the ship, respectively knotting a second knot at two ends 3m away from the top end of the final elbow, and connecting the top end of the final elbow and a suspender by a nylon belt; additionally mounting floating balls at the top end of the final elbow and the suspender; moving the ship forwards, simultaneously discharging the cable working rope and simultaneously moving a gantry crane; after the top end of the final elbow enters the water, cutting an strong synthetic fibre rope to discharge the final elbow to the bottom of sea. The invention has advantages that the method is easily operated and suitable for various depths of the water without special requirements on working platforms and weather windows, and can safely and reliably finish the mounting of the final elbow of the power cable.
Description
Technical field
The present invention relates to method for mounting power cable repairing final elbow, belong to seabed power cable construction method technical field.
Background technology
Power cable overall dimension is big, and (diameter is mostly about 120 centimetres) from great, (30 kilograms/every meter) rigidity is low, rupture strength little (about 10 tons); During traditional shallow water power cable is repaired; For final elbow) installation method adopt the top (Final Crown) that final splice tray is placed on final elbow usually; Thereafter with loop wheel machine final elbow is hung onto the construction method in seabed; Because water is shallow, the total weight of this final elbow (the entry cables of splice tray+top (Final Crown)+both sides) is little, and this method has certain operability.But when deep water is constructed (greater than 100 meters), the deadweight of the entry cable of both sides increases and significantly increases along with the depth of water, takes the process Installation final elbow of single-point lifting to require very high to hanging device and relevant rigging; And in the repairing of power cable; How splice tray is installed and is guaranteed certain radius of curvature; Intactly entirely put top (Final Crown) to sea bed, always be the difficult problem that industry need be captured, traditional handicraft lumps together two key operations; Increased the difficulty and the risk of construction especially, so reliability is not high.
Along with rapid development of economy, human great demand to the energy makes offshore oil production obtain great advance.Increasing oil production platforms is stood in far and near ocean.Power composite cable is connecting these platforms and platform, platform and land, plays important support effect for the safety in production of offshore oil and gas field.Along with the offshore oil deep-sea of progressively marching toward from the shallow sea, the deep water power composite rope on the market is more and more, and the market space that deep water power composite rope is installed and repaired is also increasing, to the proposition of the construction operation boats and ships of specialty and operational method requirements at the higher level.
Summary of the invention
The purpose of this invention is to provide a kind ofly when the repair of power cable, be fit to the method that power composite rope final elbow is installed under any depth of water situation.
In order to achieve the above object, technical scheme of the present invention provides a kind of method for mounting power cable repairing final elbow, it is characterized in that, concrete steps are:
The first step, reclaim the power cable of final elbow one side, make the place of continuing of both sides power cable not on the top of final elbow (Final Crown);
Second the step, the power cable of final elbow both sides water intake end is all stamped first knot (BTL Stopper); First knot is linked to each other with the wireline operation rope through the balance steel wire; The wireline operation rope connects the linear step cable machine on the ship, on power cable, stamps the simple and easy snubbing line (Lazy Stopper) of insurance usefulness again;
The 3rd step, the power cable of both sides continued with splice tray after; Take off simple and easy snubbing line; With splice tray chute on the quarter in place; To the reach ship, the speed dispensing wireline operation rope of linear step cable machine to equate with ship's speed whenever is held together power cable and wireline operation rope at a distance from 1 meter with cord simultaneously along power cable route vertical direction;
The 4th step, 10-15 rice brings to before the stern on the top of final elbow; Linear step cable machine stops to discharge the wireline operation rope; Second knot (Amoie Stopper) is respectively stamped at two ends apart from 3 meters, top of final elbow; Nylon cable tie through adjustable length is connected second knot with suspension rod, suspension rod links to each other with hoist engine with the reinforcement towline through straddle truck;
The 5th step, install ball float additional at the top and the suspension rod of final elbow, the ball float on the top of final elbow is with cordage connection easy to wear, and the buoyancy and the suspension rod of suspension rod upper floating ball are equal in weight;
The 6th step, along power cable route vertical direction to the reach ship, the speed dispensing wireline operation rope of linear step cable machine simultaneously to equate with ship's speed, straddle truck is mobile simultaneously;
The 7th the step, treat the top entry of final elbow after; Bring to and stop linear step cable machine and straddle truck; Towline is strengthened in cutting, and to the reach ship, linear step cable machine is placed to the seabed with the speed dispensing wireline operation rope that equates with ship's speed until final elbow simultaneously along power cable route vertical direction in continuation;
The 8th goes on foot, breaks apart by chopping above deck the wireline operation rope, is sink to the seabed behind the broken end connection pouring weight with the wireline operation rope, and water breaks apart by chopping the other end that wireline operation is restricted at the top end of final elbow under the use underwater robot, with its recovery.
Advantage of the present invention is that this method is simple to operation, is suitable for the various depth of waters, job platform and weather window is not had specific (special) requirements, the installation of completion power cable final elbow that can be safe and reliable.
Description of drawings
Fig. 1 is the method for mounting power cable repairing final elbow sketch map.
Embodiment
Specify the present invention below in conjunction with accompanying drawing and embodiment.
Embodiment
As shown in Figure 1, be the method for mounting power cable repairing final elbow sketch map, described method for mounting power cable repairing final elbow, concrete steps are following:
The first step, set finally continue before, reclaim the power cable of final elbow one side, make the place of continuing of both sides power cable not on the top 10 of final elbow;
Second the step, the power cable of final elbow both sides water intake end is all stamped first knot 4; First knot 4 is linked to each other with the wireline operation rope 8 of 6x3 through balance steel wire 5; The linear step cable machine that wireline operation rope 8 connects on the ship is stamped the simple and easy snubbing line that insures usefulness again on power cable;
The 3rd step, the power cable of both sides continued with splice tray 2 after; Take off simple and easy snubbing line; With splice tray 2 chutes on the quarter in place, to the reach ship, linear step cable machine restricts 8 with the speed dispensing wireline operation that equates with ship's speed simultaneously along power cable route vertical direction; In order to guarantee the smooth sea bed of putting into of cable, the deck operating personnel whenever is held together power cable and wireline operation rope 8 usefulness cord at a distance from 1 meter; Because splice tray is away from the top of final elbow, splice tray will be emitted outside the ship side prior to the top, and the installation of splice tray just can not influence the dispensing on top like this.
The 4th goes on foot, brings to preceding 11 meters of stern on the top 10 of final elbow; Linear step cable machine stops to discharge wireline operation rope 8; Second knot 9 is respectively stamped at two ends apart from 3 meters on the top 10 of final elbow; Is that 5 meters the top 10 and the suspension rod 3 of 6 meters of diameters are connected with the nylon cable tie 7 of second knot 9 through adjustable length with about 23 meters long of final elbow, diameter, suspension rod 3 through A type straddle truck with strengthen towline 6 and link to each other with hoist engine; Can adjust the curve on top 10 during lifting top 10 through the adjusting of nylon cable tie 7 length, help the seabed that is installed to of the smooth no ringlet of final elbow.
The 5th step, calculate weight in the water on top 10 of final elbow and install ball float 1 (it is 9 kilograms deep water ball float that ball float 1 employing company buries the buoyancy that is installed in the plough work progress on the signal cable under water underground) additional at the top 10 of final elbow and suspension rod 3, according to the ball float that installs some additional 1 in order to the weight that alleviates top 10 to play the purpose of indirect increase power cable rigidity.The cordage easy to wear of 5 millimeters of the ball float 1 usefulness diameters on the top 10 of final elbow connects, make things convenient for the power cable final elbow to be installed to the seabed after, thereby under external force effects such as ocean current and rub voluntarily with power cable and separate.The buoyancy and the suspension rod 3 of suspension rod 3 upper floating balls 1 are equal in weight, like this can be under self rigidity effect behind 10 water of top, and free smooth sinking.
The 6th the step, with 0.5 kilometer/hour speed along power cable route vertical direction to the reach ship; Linear step cable machine restricts 8 with the speed dispensing wireline operation that equates with ship's speed simultaneously; Straddle truck moves simultaneously; Hoist engine is according to the timely folding and unfolding speed of adjustment of needs, guarantees that top 10 discharges to ship side with the expectation attitude.
The 7th the step, treat top 10 entry of final elbow after; Bring to and stop linear step cable machine and straddle truck; Towline 6 is strengthened in cutting; To the reach ship, simultaneously linear step cable machine is restricted with the speed dispensing wireline operation that equates with ship's speed and 8 is placed to the seabed until final elbow along power cable route vertical direction in continuation; Can judge through the tension variation on the linear step cable machine and the length of the 6x3 that discharges away rope tool.
The 8th step, break apart by chopping wireline operation rope 8 above deck, be sink to the seabed with control mode after the broken end of wireline operation rope 8 is connected pouring weight, use water under the underwater robot to break apart by chopping the other end of wireline operation rope 8 at 10 places, top of final elbow, its recovery.Accomplish the installation of whole power composite rope final elbow.
Claims (1)
1. a method for mounting power cable repairing final elbow is characterized in that, concrete steps are:
The first step, reclaim the power cable of final elbow one side, make the place of continuing of both sides power cable not on the top (10) of final elbow;
Second the step, the power cable of final elbow both sides water intake end is all stamped first knot (4); First knot (4) is linked to each other with wireline operation rope (8) through balance steel wire (5); Wireline operation rope (8) connects the linear step cable machine on the ship, on power cable, stamps the simple and easy snubbing line of insurance usefulness again;
The 3rd step, the power cable of both sides continued with splice tray (2) after; Take off simple and easy snubbing line; With splice tray (2) chute on the quarter in place; To the reach ship, the speed dispensing wireline operation rope (8) of linear step cable machine to equate with ship's speed whenever is held together power cable and wireline operation rope (8) at a distance from 1 meter with cord simultaneously along power cable route vertical direction;
The 4th step, 10-15 rice brings to before the stern on the top (10) of final elbow; Linear step cable machine stops to discharge wireline operation rope (8); Second knot (9) is respectively stamped at two ends apart from (10) 3 meters, top of final elbow; Nylon cable tie (7) through adjustable length is connected second knot (9) with suspension rod (3), suspension rod (3) links to each other with hoist engine with reinforcement towline (6) through straddle truck;
The 5th step, install ball float (1) additional at top (10) and the suspension rod (3) of final elbow, the ball float (1) of the top of final elbow (10) is with cordage connection easy to wear, and the buoyancy of suspension rod (3) upper floating ball (1) and suspension rod (3) are equal in weight;
The 6th step, along power cable route vertical direction to the reach ship, the speed dispensing wireline operation rope (8) of linear step cable machine simultaneously to equate with ship's speed, straddle truck is mobile simultaneously;
The 7th the step, treat top (10) entry of final elbow after; Bring to and stop linear step cable machine and straddle truck; Towline (6) is strengthened in cutting; To the reach ship, linear step cable machine is placed to the seabed with the speed dispensing wireline operation rope (8) that equates with ship's speed until final elbow simultaneously along power cable route vertical direction in continuation;
The 8th step, break apart by chopping wireline operation rope (8) above deck, be sink to the seabed after the broken end of wireline operation rope (8) is connected pouring weight, use water under the underwater robot to locate to break apart by chopping the other end of wireline operation rope (8) on the top (10) of final elbow, its recovery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101447118A CN101807786B (en) | 2010-04-12 | 2010-04-12 | Method for mounting power cable repairing final elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101447118A CN101807786B (en) | 2010-04-12 | 2010-04-12 | Method for mounting power cable repairing final elbow |
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| CN101807786A CN101807786A (en) | 2010-08-18 |
| CN101807786B true CN101807786B (en) | 2012-03-21 |
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| CN2010101447118A Active CN101807786B (en) | 2010-04-12 | 2010-04-12 | Method for mounting power cable repairing final elbow |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973363A (en) * | 2010-10-15 | 2011-02-16 | 丁巨国 | Track system of fairway and operating method |
| CN102832574B (en) * | 2012-08-22 | 2015-04-29 | 中英海底系统有限公司 | Method for dynamically monitoring power cable in real time by three-synchronization underwater robot |
| CN109823486A (en) * | 2018-12-11 | 2019-05-31 | 浙江启明电力集团有限公司 | A kind of submarine cable connecting operation device and its operational method |
| CN110912031B (en) * | 2019-11-22 | 2021-12-24 | 上海电力大学 | Simulation deployment device for submarine cable on construction site |
| CN112701610B (en) * | 2020-12-30 | 2023-04-14 | 浙江启明电力集团有限公司海缆工程公司 | Submarine cable offshore repairing, retracting and operating system capable of automatically disengaging |
| CN114992386A (en) * | 2022-06-30 | 2022-09-02 | 天津市精研工程机械传动有限公司 | Control system and control method for release device of abandoned marine pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739854Y (en) * | 2004-09-08 | 2005-11-09 | 上海中航泵业制造有限公司 | Submersible pump cable wiring integrated seal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002335614A (en) * | 2001-05-10 | 2002-11-22 | Fujitsu Ltd | Submarine equipment |
| JP2009239994A (en) * | 2008-03-26 | 2009-10-15 | Viscas Corp | Seabed laying method of lengthy body |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739854Y (en) * | 2004-09-08 | 2005-11-09 | 上海中航泵业制造有限公司 | Submersible pump cable wiring integrated seal |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2009-239994A 2009.10.15 |
| 裘忠良.海缆系统受到的威胁和应对措施.《第二届全国海底光缆通信技术研讨会论文集》.2009,第180-190页. * |
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