CN105182491A - Adjoining seabed pipeline optical cable laying method - Google Patents
Adjoining seabed pipeline optical cable laying method Download PDFInfo
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- CN105182491A CN105182491A CN201510539902.7A CN201510539902A CN105182491A CN 105182491 A CN105182491 A CN 105182491A CN 201510539902 A CN201510539902 A CN 201510539902A CN 105182491 A CN105182491 A CN 105182491A
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- optical cable
- armored optical
- pipe
- laying
- ring
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/506—Underwater installation
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses an adjoining seabed pipeline optical cable laying method, comprising steps of prefabricating a magnetic ring on the surface of a subsea pipe before the pipe laying working, laying the seabed pipe which is provided with the prefabricated magnetic ring after completion of the pipe laying working, 2) prefabricating a magnetic force ring on the surface of the armour optical cable before a ditching operation and prefabricating an armour optical cable guiding device, 3) placing the prefabricating structure and the ditching device on a construction site on a ditching boat, 4) connecting the hook of the armour optical cable guiding device to the rear part of the ditching machine, passing the end of the optical cable through the guiding ring of the armour optical cable guiding device for temporary fixing, 5) movably clamping the clamping ring on the subsea pipe by the diver after the ditching machine enters the water, releasing the temporary fixing terminal of the armour optical cable and fixing with one terminal of the subsea pipe, 6) performing marching operation by the ditching machine under the water along the seabed pipe, synchronically lowering the armour optical cable and laying the armour optical cable along the seabed pipe, wherein the magnetic force belt is fixedly absorbed on the magnetic ring on the surface of the sea pipe. The laying method reduces the complexity and cost of the construction and improves the construction efficiency.
Description
Technical field
The invention belongs to sea-bottom oil-gas pipeline safety monitoring field, be specifically related to a kind of laying method be applicable to submarine pipeline optical cable.
Background technology
Submarine pipeline, also sea pipe is claimed, offshore oil, most economical in natural gas transportation mode, reasonably select, and constantly increase along with the continuous construction of extra large pipe and active time, Hai Guanhui leaks because of burn into damage from third-party and suspended span or other reason, and is difficult to by Timeliness coverage and location, and oil and gas leakage not only causes huge economic loss, pollute marine environment, and often cause great social influence.
Along with the actual needs with pipe safety operation that develops rapidly of pipeline integrity administrative skill level, the safety monitoring technology of pipeline has been subject to the special attention of industry, and various pipe detection monitoring technology is also thereupon flourish.Extra large pipe leakage monitoring has mainly used optical fiber sensing technology, utilizes light signal perception and monitoring external information, thus identifies and accurate locating leaks in pipes.Main enforcement means are that armored optical cable is laid on seabed, together with being strapped in by armored optical cable, can realize like this, to the long-term on-line monitoring of extra large pipe, carrying out safe condition evaluation with extra large pipe.At present, armored optical cable is laid on seabed to realize mainly through two kinds of modes, one is plunged into the commercial sea after laying completes, along the whole laying length of extra large pipe at extra large pipe, prick hoop together at interval of a segment distance frogman is fixing on extra large pipe, armored optical cable is strapped on extra large pipe; Another kind is before laying plunged into the commercial sea by extra large pipe, and armored optical cable is strapped on extra large pipe by pipelaying barge in advance, and like this, when laying plunged into the commercial sea by extra large pipe, armored optical cable synchronously completes laying.The laying of above-mentioned first kind of way armored optical cable on extra large pipe completes under water, frogman's long period is needed to carry out under water operating or repeatedly repeatedly descending water, its operability is poor, laying construction difficulty is also higher, causes laying efficiency lower higher with laying construction cost; Above-mentioned second way sensing optic cable being strapped on the water surface on extra large pipe completes, and has the advantage that workable and laying construction difficulty is low, but lays that efficiency needs to be improved further, laying construction cost needs to be reduced further.
Summary of the invention
The present invention provides a kind of difficulty of construction and construction cost of reducing for solving in known technology the technical matters that exists, improves the laying method be applicable to submarine pipeline optical cable laying efficiency.
The technical scheme that the present invention takes for the technical matters existed in solution known technology is:
Be applicable to the laying method with submarine pipeline optical cable, it is characterized in that, comprise and lay step as follows:
1) before laying work starts, first on the surface of extra large pipe at interval of prefabricated one magnetosphere of a segment distance, after laying work completes, be prefabricated with the pipe laying of magnetosphere on sea bed face;
2) before ditching operation starts, on the surface of armored optical cable at interval of prefabricated one magnetic ring of a segment distance, spacing between magnetic ring is less than the spacing between magnetosphere, and shift to an earlier date prefabricated armored optical cable guide piece, armored optical cable guide piece comprises the snap ring with lower bayonet socket, snap ring is at least provided with a guide ring passed freely through for magnetic ring near the position of upper end, hook is connected with in the position, upper end of snap ring, described snap ring is made up of elasticity nonmagnetic substance, and described guide ring is made up of nonmagnetic substance;
3) under trencher before water, the armored optical cable of peripheral hardware magnetic ring, armored optical cable guide piece and trencher are placed in the construction location on ditching ship, carry out the preparation of ditching and paving cable;
4) all materials ready after, the hook of armored optical cable guide piece and the afterbody of trencher are connected by ditching ship, and the end of armored optical cable is passed in the guide ring of armored optical cable guide piece, and carry out temporary fixed, under trencher, water is ready;
5), under trencher after water, water under frogman, is contained in the snap ring active card of armored optical cable guide piece on extra large pipe, and unties the temporary fixed end of armored optical cable, and this end of armored optical cable is fixedly connected with one end of extra large pipe;
6) trencher moves ahead along extra large pipe under water, armored optical cable guide piece is driven to move ahead, the armored optical cable be placed on ditching ship is synchronously transferred, transfer to armored optical cable in water under the guiding of armored optical cable guide piece, along pipe laying, and be absorbed and fixed on the prefabricated magnetosphere of extra large tube-surface by the magnetic ring being arranged on armored optical cable surface, the adjoining pipe finally achieving optical cable is laid.
The technical scheme that the present invention can also take is:
Two guide rollers are symmetrically installed with at the inner side of the snap ring of armored optical cable guide piece, in above-mentioned 5th step, when snap ring is installed on extra large Guan Shanghou, the guide roller of both sides and the outside surface sliding contact of extra large pipe.
Thickness in advance built in the upper per pass magnetosphere of sea pipe is 1 ~ 2mm, the spacing≤3m between magnetosphere, the spacing≤1.5m between magnetic ring.
The advantage that the present invention has and good effect are:
The present invention is by shifting to an earlier date prefabricated magnetosphere on extra large pipe, prefabricated magnetic ring and prefabricated armored optical cable guide piece on armored optical cable, achieve in ditching operation process, the synchronous laying of armored optical cable and fixing, improve and lay efficiency and reduce laying cost, in addition, the whole process of deployment of armored optical cable only needs manually to be fixed one end of the end of armored optical cable and extra large pipe before starting laying, remaining whole process of deployment is under the traction of trencher and under the guiding of armored optical cable guide piece, armored optical cable completes automatically to be laid and fixes, like this, just eliminate artificial laying and fix, thus considerably reduce difficulty of construction.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is prefabricated with the extra large pipe of magnetosphere;
Fig. 2 is the structural representation that the present invention is prefabricated with the armored optical cable of magnetic ring;
Fig. 3 is the structural representation of armored optical cable guide piece;
Fig. 4 is the fit structure schematic diagram of sea pipe, armored optical cable and armored optical cable guide piece when laying.
In figure: 1, Hai Guan; 2, magnetosphere; 3, armored optical cable; 4, magnetic ring; 5, armored optical cable guide piece; 5-1, snap ring; 5-2, lower bayonet socket; 5-3, guide ring; 5-4, hook; 5-5, guide roller.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1-4, a kind of laying method be applicable to submarine pipeline optical cable, comprises and lays step as follows:
1) before laying work starts, first on the surface of extra large pipe 1 at interval of prefabricated one magnetosphere 2 of a segment distance, after laying work completes, be prefabricated with the pipe laying of magnetosphere on sea bed face.
2) before ditching operation starts, on the surface of armored optical cable 3 at interval of prefabricated one magnetic ring 4 of a segment distance, the spacing between magnetic ring is less than the spacing between magnetosphere, and shifts to an earlier date prefabricated armored optical cable guide piece 5.Armored optical cable guide piece comprises the snap ring 5-1 with lower bayonet socket 5-2, snap ring is at least provided with a guide ring 5-3 passed freely through for magnetic ring near the position of upper end, concrete, guide ring adopts circular, the diameter of its inner ring, slightly larger than the external diameter of magnetic ring, is connected with hook 5-4 or link, represents in the accompanying drawings with hook in the position, upper end of snap ring, described snap ring is made up of elasticity nonmagnetic substance, and described guide ring is made up of nonmagnetic substance.
3) under trencher before water, the armored optical cable of peripheral hardware magnetic ring, armored optical cable guide piece and trencher are placed in the construction location on ditching ship, carry out the preparation of ditching and paving cable.
4) all materials ready after, the afterbody of the hook of armored optical cable guide piece or link and trencher is connected by ditching ship, and the end of armored optical cable is passed in the guide ring of armored optical cable guide piece, and carry out temporary fixed, for under trencher, water is ready, like this when after water under postorder trencher, the same water at present in the end of armored optical cable can be driven;
5), under trencher after water, water under frogman, is contained in the snap ring active card of armored optical cable guide piece on extra large pipe, and unties the temporary fixed end of armored optical cable, and this end of armored optical cable is fixedly connected with one end of extra large pipe;
6) trencher moves ahead along extra large pipe under water, armored optical cable guide piece is driven to move ahead, the armored optical cable be placed on ditching ship is synchronously transferred, transfer to armored optical cable in water under the guiding of armored optical cable guide piece, along pipe laying, and be absorbed and fixed on the prefabricated magnetosphere of extra large tube-surface by the magnetic ring being arranged on armored optical cable surface, the adjoining pipe finally achieving optical cable is laid.
In above-mentioned laying method, two guide roller 5-5 are symmetrically installed with at the inner side of the snap ring of armored optical cable guide piece, in above-mentioned 5th step, when snap ring is installed on extra large Guan Shanghou, the guide roller of both sides and the outside surface sliding contact of extra large pipe, like this, when the coastal pipe of snap ring moves, two guide rollers inside it slide along extra large tube-surface, and then improve the smoothness of the coastal tube-surface movement of snap ring.
In above-mentioned laying method, thickness in advance built in the upper per pass magnetosphere of sea pipe is preferably 1 ~ 2mm, adopt the thickness of this value range, material cost can be saved on the one hand, on the other hand when the coastal tube-surface of the snap ring of armored optical cable guide piece moves, the impact of the resistance caused by the thickness of magnetosphere can be ignored.Above-mentioned pre-spacing between the magnetosphere of extra large tube-surface preferably≤3m, above-mentioned pre-spacing between the magnetic ring on armored optical cable surface preferably≤1.5m.
Adopt this laying method, in ditching operation, the adjoining pipe that automatically can realize armored optical cable is laid and fixing, thus reduces laying construction difficulty, reduce laying construction cost and improve laying efficiency.
Claims (3)
1. be applicable to the laying method with submarine pipeline optical cable, it is characterized in that, comprise and lay step as follows:
1) before laying work starts, first on the surface of extra large pipe at interval of prefabricated one magnetosphere of a segment distance, after laying work completes, be prefabricated with the pipe laying of magnetosphere on sea bed face;
2) before ditching operation starts, on the surface of armored optical cable at interval of prefabricated one magnetic ring of a segment distance, spacing between magnetic ring is less than the spacing between magnetosphere, and shift to an earlier date prefabricated armored optical cable guide piece, armored optical cable guide piece comprises the snap ring with lower bayonet socket, snap ring is at least provided with a guide ring passed freely through for magnetic ring near the position of upper end, hook is connected with in the position, upper end of snap ring, described snap ring is made up of elasticity nonmagnetic substance, and described guide ring is made up of nonmagnetic substance;
3) under trencher before water, the armored optical cable of peripheral hardware magnetic ring, armored optical cable guide piece and trencher are placed in the construction location on ditching ship, carry out the preparation of ditching and paving cable;
4) all materials ready after, the hook of armored optical cable guide piece and the afterbody of trencher are connected by ditching ship, and the end of armored optical cable is passed in the guide ring of armored optical cable guide piece, and carry out temporary fixed, under trencher, water is ready;
5), under trencher after water, water under frogman, is contained in the snap ring active card of armored optical cable guide piece on extra large pipe, and unties the temporary fixed end of armored optical cable, and this end of armored optical cable is fixedly connected with one end of extra large pipe;
6) trencher moves ahead along extra large pipe under water, armored optical cable guide piece is driven to move ahead, the armored optical cable be placed on ditching ship is synchronously transferred, transfer to armored optical cable in water under the guiding of armored optical cable guide piece, along pipe laying, and be absorbed and fixed on the prefabricated magnetosphere of extra large tube-surface by the magnetic ring being arranged on armored optical cable surface, the adjoining pipe finally achieving optical cable is laid.
2. the laying method be applicable to submarine pipeline optical cable according to claim 1, it is characterized in that: be symmetrically installed with two guide rollers at the inner side of the snap ring of armored optical cable guide piece, in above-mentioned 5th step, when snap ring is installed on extra large Guan Shanghou, the guide roller of both sides and the outside surface sliding contact of extra large pipe.
3. the laying method be applicable to submarine pipeline optical cable according to claim 1, is characterized in that: the thickness in advance built in the upper per pass magnetosphere of sea pipe is 1 ~ 2mm, the spacing≤3m between magnetosphere, the spacing≤1.5m between magnetic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510539902.7A CN105182491B (en) | 2015-08-28 | 2015-08-28 | A kind of laying method being suitable for submarine pipeline optical cable |
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| CN201510539902.7A CN105182491B (en) | 2015-08-28 | 2015-08-28 | A kind of laying method being suitable for submarine pipeline optical cable |
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| CN105182491A true CN105182491A (en) | 2015-12-23 |
| CN105182491B CN105182491B (en) | 2018-06-29 |
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| CN201510539902.7A Active CN105182491B (en) | 2015-08-28 | 2015-08-28 | A kind of laying method being suitable for submarine pipeline optical cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974537A (en) * | 2016-06-16 | 2016-09-28 | 成都聚智工业设计有限公司 | Seabed communication optical cable |
| CN110244422A (en) * | 2019-07-17 | 2019-09-17 | 中油奥博(成都)科技有限公司 | A kind of armored optical cable adherent coupling device and method in metallic sheath pipe well |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974537A (en) * | 2016-06-16 | 2016-09-28 | 成都聚智工业设计有限公司 | Seabed communication optical cable |
| CN110244422A (en) * | 2019-07-17 | 2019-09-17 | 中油奥博(成都)科技有限公司 | A kind of armored optical cable adherent coupling device and method in metallic sheath pipe well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105182491B (en) | 2018-06-29 |
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