CN101800409B - Installation method of power cable splice box - Google Patents
Installation method of power cable splice box Download PDFInfo
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- CN101800409B CN101800409B CN2010101447156A CN201010144715A CN101800409B CN 101800409 B CN101800409 B CN 101800409B CN 2010101447156 A CN2010101447156 A CN 2010101447156A CN 201010144715 A CN201010144715 A CN 201010144715A CN 101800409 B CN101800409 B CN 101800409B
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- splice tray
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Abstract
The invention provides an installation method of a splice box of a power cable, which is characterized by comprising the following steps of: knotting a first knot on the water entry end of the power cable, connecting the first knot with one end of a cable operation rope through a balanced steel wire, and connecting the power cable with a spare cable through a connector box; tightly binding the connector box and a hanger rod; knotting second knots on the front and the back of the connector box, and connecting the second knots through the steel wire; moving a ship, and synchronously releasing the cable operation rope; binding the spare cable and the cable operation rope together by a small rope every 1 meter after the connector box passes a stern; knotting a third knot on the position of the spare cable, which is 42 meters away from the first knot, and connecting the third knot with the cable operation rope; moving the cable operation rope out of a linear stepping cable machine, and placing the spare cable into the linear stepping cable machine; moving the ship, and synchronously releasing the cable till the connector box is released to a seabed. The invention can be suitable for any water depth and meet the requirement that a connector box installation process does not have additional requirements on an operation weather window, thereby being safe and effective.
Description
Technical field
The present invention relates to a kind of installation method of power cable splice box, belong to subsea power cable construction method technical field.
Background technology
The splice tray of traditional communication cable is through 100 years of development, technology level has allowed present splice tray and cable combine together, remove size slightly greater than the outer (size of cable, weight is: long 230 centimetres, 13.5 centimetres of diameters, 35 kilograms of air deadweights are conducted oneself with dignity 20 kilograms under water), other aspects such as intensity etc. all has the parameter attribute with the cable basically identical.Greatly reduce construction process requirement like this, simple to operation.The dynamic mixing cable has its special built-in attribute and feature, the technology that continues uniqueness, prefabricated splice tray enormous size, (size, weight is: long 210 centimetres, 62 centimetres of diameters, 1500 kilograms of air deadweights are conducted oneself with dignity 1100 kilograms under water), in installation process, require almost can not be subjected to any external force effect, and need to keep with the equal bending radius of power composite rope (radius of curvature is generally 2 meters), smooth puts as for sea bed.All the time, the splice tray in the power cable repairing process is the installation when deepwater work especially, all is a great problem that industry need overcome.
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 the 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 repaired is increasing, and is also more and more higher to the demand of the construction operation boats and ships of specialty and operational method.
Power composite rope is in the market repaired most taking and (is used tugboat as large-scale 3 through the large-scale offshore work platform of transforming and install additional shop cable construction equipment, ship DSV is supported in large-scale saturation diving, barge container etc.) carry out construction operation, its technology satisfies the requirement of the splice tray installation exercise of shallow water (100 meters depth of waters are interior), but the person has suitable task difficulty for deep water (greater than 100 meters), and reliability is not high.
Summary of the invention
The purpose of this invention is to provide a kind ofly when the power cable repair, be fit to the method that power composite rope splice tray 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 installation method of power cable splice box, it is characterized in that, concrete steps are:
The first step, the power cable that salvaging is gone on board carry out the back twist processing, stamp first knot (BTL Stopper) at power cable water intake end 15-25 rice, first knot is connected through the end of balance steel wire with 40 meters long wireline operation rope, the other end of wireline operation rope is connected standby operation rope, the wireline operation rope is put into linear step cable machine, linear step cable machine is reclaimed in operation, makes power cable painstaking, with splice tray power cable is connected with cable in stock;
Second step, splice tray is laid in place on the chute of deck, with splice tray and suspension rod tighten, suspension rod connect to lift by crane steel wire with band, and tamp with girth member (timber) in the cable at splice tray two ends and the space of suspension rod;
The 3rd step, second knot is stamped at each 1-3 rice before and after the splice tray, connect second knot with steel wire, insert the turn buckle (turnbuckle) of adjustable length at the steel wire middle part, the total length of steel wire and turn buckle is less than the total length of cable between second knot and splice tray;
The 4th goes on foot, uses the nylon cable tie of adjustable in length to connect the suspension rod and second knot, guarantees that the cable between the splice tray and second knot does not stress;
The 5th the step, move boats and ships along the cable route direction, power cable is pulled up, linear step cable machine discharges the wireline operation rope synchronously, boats and ships quarter deck loop wheel machine lifts by crane splice tray by suspension rod, moves to splice tray synchronously and crosses stern;
The 6th step, splice tray crosses the connection of taking off suspension rod behind the stern, continue mobile boats and ships and discharge the wireline operation rope, every 1 meter with marline with cable in stock with the wireline operation rope colligation be in the same place, tension force is eaten on the wireline operation rope in the whole process of putting splice tray;
The 7th step, when the end of wireline operation rope behind stern, bring to and stop to discharge the wireline operation rope, cable in stock place at 42 meters of distance first knot stamps the 3rd knot again, the 3rd knot is connected with the wireline operation rope, the wireline operation rope is shifted out linear step cable machine, cable in stock is put into, taken off the standby operation rope behind the wireline operation rope;
The 8th step, mobile boats and ships and synchronous cable laying are put into sea bed up to splice tray.
The present invention adopts and adds suspension rod, splice tray and suspension rod are made of one, " turn buckle (turnbuckle) " by adjustable length adds steel wire and forms first road " bridge " simultaneously, on splice tray, take root, do second road " bridge " with " nylon cable tie " of adjustable in length, utilize 40 meters wireline operation rope to form the 3rd road " bridge " at last.By above-mentioned 3 pipe protection measures, guarantee splice tray safety, less stressed dispensing.
Advantage of the present invention is: can be fit to any depth of water, satisfy the splice tray mounting process fully, operation weather window is not had extra demand, finish the installation of power cable splice box safely and effectively.
Description of drawings
Fig. 1 is an installation method of power cable splice box first step schematic diagram;
Fig. 2 is second step of an installation method of power cable splice box schematic diagram;
Fig. 3 is the 3rd step of an installation method of power cable splice box schematic diagram;
Fig. 4 is the 4th step of an installation method of power cable splice box schematic diagram;
Fig. 5 is the 6th step of an installation method of power cable splice box schematic diagram.
Embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment
The first step, eliminating power cable fault, the power cable 1 that salvaging is gone on board carries out the back twist processing, stamp two first knots 2 at 20 meters of power cable 1 water intake end, first knot 2 is connected through the end of balance steel wire 3 with 40 meters long wireline operation rope 4, the other end of wireline operation rope 4 is connected standby operation rope, wireline operation rope 4 is put into linear step cable machine, linear step cable machine is reclaimed in operation, make power cable 1 painstaking, power cable 1 is connected with cable in stock 5 with splice tray 6; As shown in Figure 1, be installation method of power cable splice box first step schematic diagram.
Second step, cable splice finish, after detecting engineer's test passes, splice tray 6 is laid in place on the chute of deck, splice tray is carried out consolidation process before the entry, with band with splice tray 6 and suspension rod 7 tightens, suspension rod 7 connects lifting steel wire 12, tamp with girth member 8 (timber) in the cable at splice tray 6 two ends and the space of suspension rod 7, make the cable and the splice tray 6 at splice tray 6 two ends become one, thereby strengthen the anti-current ability and the rigidity modulus of joint and cable, as shown in Figure 2, be second step of installation method of power cable splice box schematic diagram.
The 3rd step, each 2 meters in splice tray 6 front and back (determining concrete length with cable producer according to on-the-spot) locate to stamp second knot 10, connect second knot 10 with steel wire 9, insert the turn buckle (turnbuckle) of adjustable length at steel wire 9 middle parts, the total length of steel wire 9 and turn buckle is less than the cable of 10 of second knots and the total length of splice tray 6, play the effect of " bridge ", put afterwards in the process of splice tray 6, splice tray 6 all the time can be directly not stressed, as shown in Figure 3, be the 3rd step of installation method of power cable splice box schematic diagram.
The 4th goes on foot, uses the nylon cable tie 11 of adjustable in length to connect the suspension rod and second knots 10, guarantee that the cable between the splice tray 6 and second knot 10 does not stress, its deadweight on second knot 10, as shown in Figure 4, is the 4th step of installation method of power cable splice box schematic diagram painstakingly.
The 5th the step, beat ringlet in order to prevent power cable, move boats and ships along the cable route direction, make power cable 1 reach certain tension force (under water the deadweight+10Kn), after guaranteeing power cable 1 pull-up one radian, linear step cable machine discharges wireline operation rope 4 synchronously, boats and ships quarter deck loop wheel machine moves to splice tray 6 synchronously and crosses stern by suspension rod 7 lifting splice trays 6;
The 6th step, splice tray 6 are crossed the connection of taking off suspension rod 7 behind the stern, continue mobile boats and ships and discharge wireline operation rope 4, every 1 meter with marline with cable in stock 5 with the wireline operation rope 4 colligations be in the same place, tension force is eaten on wireline operation rope 4 in the whole process of putting splice tray 6, as shown in Figure 5, be the 6th step of installation method of power cable splice box schematic diagram.
The 7th step, when the end of wireline operation rope 4 behind stern, bring to and stop to discharge wireline operation rope 4, stamp the 3rd knot 13 again at cable in stock 5 places with 42 meters of first knot, 2 distances, the 3rd knot 13 is connected with wireline operation rope 4, because this moment, 42 meters cable in stock 5 length were greater than 40 meters wireline operation rope 4 length, this section cable in stock 5 will not stress, and power will be subjected on 40 meters wireline operation rope 4.Wireline operation rope 4 is shifted out linear step cable machine, cable in stock 5 is put into, take off the standby operation rope behind the wireline operation rope 4;
The 8th step, mobile boats and ships and synchronous cable laying are judged splice tray 6 (splice tray 6 is conducted oneself with dignity a ton under water, and end backward pull can diminish) behind sea bed, complete connection box 6 fitting operations according to tension variation.
Claims (1)
1. an installation method of power cable splice box is characterized in that, concrete steps are:
The first step, the power cable (1) that salvaging is gone on board carry out the back twist processing, stamp first knot (2) at power cable (1) water intake end 15-25 rice, first knot (2) is connected through the end of balance steel wire (3) with 40 meters long wireline operation rope (4), the other end of wireline operation rope (4) is connected standby operation rope, wireline operation rope (4) is put into linear step cable machine, linear step cable machine is reclaimed in operation, make power cable (1) painstaking, power cable (1) is connected with cable in stock (5) with splice tray (6);
Second step, splice tray (6) is laid in place on the chute of deck, with splice tray (6) and suspension rod (7) tighten, suspension rod (7) connects lifting steel wire (12) with band, and tamp with girth member (8) in the cable at splice tray (6) two ends and the space of suspension rod (7);
The 3rd step, second knot (10) is stamped at each 1-3 rice before and after the splice tray (6), connect second knot (10) with steel wire (9), insert the turn buckle of adjustable length at steel wire (9) middle part, the total length of steel wire (9) and turn buckle is less than the total length of cable between second knot (10) and splice tray (6);
The 4th goes on foot, uses the nylon cable tie (11) of adjustable in length to connect suspension rod and second knot (10), guarantees that the cable between splice tray (6) and second knot (10) does not stress;
The 5th step, move boats and ships along the cable route direction, power cable (1) is pulled up, linear step cable machine discharges wireline operation rope (4) synchronously, and boats and ships quarter deck loop wheel machine moves to splice tray (6) synchronously and crosses stern by suspension rod (7) lifting splice tray (6);
Take off the connection of suspension rod (7) behind the 6th step, splice tray (6) the mistake stern, continue mobile boats and ships and discharge wireline operation rope (4), every 1 meter with marline together with cable in stock (5) and wireline operation rope (4) colligation, tension force is eaten on wireline operation rope (4) in the whole process of putting splice tray (6);
The 7th step, when the end of wireline operation rope (4) behind stern, bring to and stop to discharge wireline operation rope (4), cable in stock (5) at (2) 42 meters of distance first knot locates to stamp the 3rd knot (13) again, the 3rd knot (13) is connected with wireline operation rope (4), wireline operation rope (4) is shifted out linear step cable machine, cable in stock (5) is put into, taken off the standby operation rope behind the wireline operation rope (4);
The 8th step, mobile boats and ships and synchronous cable laying are put into sea bed up to splice tray (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101447156A CN101800409B (en) | 2010-04-12 | 2010-04-12 | Installation method of power cable splice box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101447156A CN101800409B (en) | 2010-04-12 | 2010-04-12 | Installation method of power cable splice box |
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| CN101800409A CN101800409A (en) | 2010-08-11 |
| CN101800409B true CN101800409B (en) | 2011-06-29 |
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| CN104659704B (en) * | 2014-12-30 | 2017-02-22 | 中英海底系统有限公司 | Integrated marine laying construction method for submarine observation network system junction box |
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| JP2002335614A (en) * | 2001-05-10 | 2002-11-22 | Fujitsu Ltd | Submarine equipment |
| 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 |
| JP2009239994A (en) * | 2008-03-26 | 2009-10-15 | Viscas Corp | Seabed laying method of lengthy body |
| CN101475054B (en) * | 2009-01-12 | 2011-04-20 | 中英海底系统有限公司 | Method for realizing deep buried cable salvage by using high pressure water spraying shallow sea bury flushing device |
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