KR20100003448A - Submarine cable laying method and locator - Google Patents

Submarine cable laying method and locator Download PDF

Info

Publication number
KR20100003448A
KR20100003448A KR1020080063348A KR20080063348A KR20100003448A KR 20100003448 A KR20100003448 A KR 20100003448A KR 1020080063348 A KR1020080063348 A KR 1020080063348A KR 20080063348 A KR20080063348 A KR 20080063348A KR 20100003448 A KR20100003448 A KR 20100003448A
Authority
KR
South Korea
Prior art keywords
submarine cable
trench
detector
barge
cable
Prior art date
Application number
KR1020080063348A
Other languages
Korean (ko)
Inventor
권길중
Original Assignee
권길중
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 권길중 filed Critical 권길중
Priority to KR1020080063348A priority Critical patent/KR20100003448A/en
Publication of KR20100003448A publication Critical patent/KR20100003448A/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/123—Devices for the protection of pipes under water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/16—Laying or reclaiming pipes on or under water on the bottom
    • F16L1/166—Reclaiming pipes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/12—Installations of electric cables or lines in or on the ground or water supported on or from floats, e.g. in water

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

PURPOSE: A method for laying a submarine cable and a detector therefor are provided to lay the submarine cable in the bottom of a trench by confirming the shape and the state of the trench through a camera. CONSTITUTION: A trench(20) is excavated on the sea floor along a route of a submarine cable(40). The trench is linearly or curvedly excavated along geographical features of the sea floor. A detector(50) is connected to a barge(30) with a rope(31). A camera is arranged in front of the detector to confirm the shape and the state of the trench. A transmitter and a byoyancy tank are arranged in the detector. A receiver(34) is arranged in a barge.

Description

Submarine cable laying method and detector for use {Submarine cable laying method and locator}

The present invention relates to a submarine cable laying method, and more particularly, to install the submarine cable along the trench excavated on the bottom, even if the trench is narrow and bent for reasons of design and economic reasons can be accurately laid the submarine cable The submarine cable laying method and the detector used therefor.

As is well known, subsea cables (or subsea pipelines) are laid on the sea floor to supply gas or oil, deep water or communication or power.

One conventional method of laying a subsea cable is to secure the winch barge line 1 with an anchor 3 as shown in FIG. 1 and to line 5 to the submarine cable (or subsea pipeline). 7) There is a so-called pooling system that draws on.

However, this pooling system is less expensive, but installation of submarine cables is possible only in the straight section, so if there is an obstacle on the sea floor, it must be installed far away in a straight line rather than curved. In addition, this pooling system is applied in intertidal zones in short intervals, and due to the influence of algae, long-distance work was impossible.

On the other hand, there is disclosed a method of installing a submarine cable (or subsea pipeline) in a trench of a curved portion using a lay barge, but this is not only economical because the equipment is expensive, but also a design cable route displayed through GPS on the ship. Since the installation of the submarine cable at the location of the trench determined by the surveying and depth surveying, it was difficult to accurately locate the trench and insert the submarine cable into the trench bottom (center) precisely under the influence of tidal currents. There was a problem that the accuracy is lowered.

The present invention has been proposed to improve the above-mentioned problems, the object of which is to install the submarine cable while verifying the position and position of the submarine cable seated in the trench excavated along the cable route using the detector submarine cable It is to provide a submarine cable laying method that allows easy and accurate laying at the center of the trench.

Another object of the present invention to provide a detector used in the submarine cable laying method.

In the above-described object, in the submarine cable laying method of laying the submarine cable while lowering the submarine cable from the barge to the bottom surface of the trench excavated along the cable route of the submarine design, the detector connected by the barge and the rope is introduced into the subsea. As the detector moves along the touch point where the submarine cable and the bottom (center) of the trench touch each other, it detects the shape of the trench and the seating condition of the submarine cable and transmits the signal. It is achieved by a submarine cable laying method characterized in that it comprises a step to enable.

The other object described above is installed so as to move along a touch point where the submarine cable and the bottom surface of the trench touch each other, the camera is mounted and configured to check the form and state of the trench, and a transmitter is installed to install a receiver on a barge. Transmitting and receiving is possible, and by installing a buoyancy tank injecting air is achieved by a submarine cable laying method detector, characterized in that it is configured to lift the submarine cable together while rising by buoyancy.

The submarine cable laying industry according to the present invention can check the form and state of the trench visually from the barge by using a camera when laying the submarine cable, and can accurately determine the position coordinates and the level of the submarine cable using the transceiver. This makes it possible to accurately install submarine cables in the center of trench bottoms excavated along the cable route in the design, especially in curved trenches. In addition, by using a detector to reduce the amount of work of divers to realize an accident-free, improve workability and shorten the construction period. In addition, if the submarine cable is not accurately seated on the bottom of the trench, it is very easy to adjust the position of the submarine cable because air can be injected into the buoyancy tank of the detector to lift the submarine cable easily using buoyancy and then mount it again correctly. It has an easy effect.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 2 is a view showing the submarine cable laying method according to the present invention, Figure 3 is a side view showing a detector used in the present invention, Figure 4 is a view showing a state that the submarine cable is correctly seated in the trench to be.

2 and 3, the method for laying the submarine cable according to the present invention will be described. First, the trench 20 is excavated along a line where the submarine cable 40 is installed on the seabed surface 10, that is, a cable route of design. do. At this time, the trench 20 is excavated in a straight or curved line according to the topography of the sea bottom 10.

Then, the submarine cable 40 is lowered into the trench 20 of the sea bottom 10 in a state where the barge 30 is fixed at a predetermined position of the sea level. At this time, the detector 50 is put down to the bottom 10 together to detect the touch point that the bottom (center) of the submarine cable 40 and the trench 20 is in contact.

According to the present invention, the detector 50 is connected to the barge 30 and the rope 31 is installed to move together in the direction in which the barge 30 is moved, the hook is fitted to the outer surface of the submarine cable 40 ( 58) is connected to the submarine cable 40 is installed to move along the submarine cable 40 when the barge 30 is moved. Here, the hook 58 is connected to the detector 50 and is inserted into the outer surface of the submarine cable 40 so as to be movable, a conventional hook may be applied. Preferably, the lower end of the hook 58 is It may be configured to be fitted to the submarine cable 40 as the tong principle while being opened or retracted about the center pin of the upper end. In addition, the detector 50 is equipped with a camera 52 on the front side is configured to check the form and state of the trench 20 through the monitor 32 in the barge 30, wherein the camera 52 is a seabed Any product that can shoot clearly at will be applicable. For example, you could use an underwater CC camera, Image Sonya. In addition, the detector 50 is provided with a transmitter 54 in a portion and the corresponding receiver 34 is installed in the barge 30 is configured to transmit and receive the position. In addition, the detector 50 is provided with a buoyancy tank 56 in a portion, the buoyancy tank 56 is configured to be able to inject or withdraw air itself. Therefore, when the air is injected into the buoyancy tank 56 is lifted by the buoyancy and is configured to lift together the submarine cable 40 connected to the ring 58. Of course, since the principle of injecting and releasing air into the buoyancy tank 56 may be applied to a known technique, a detailed description thereof will be omitted.

Subsequently, the submarine cable laying process will be described. When the detector 50 is installed to detect the touch point where the submarine cable 40 and the bottom surface (center) of the trench 20 reach, the detector 50 is completed. After checking the position of the trench 20 and the position of the submarine cable 40 while checking the signal transmitted from the, the submarine cable 40 is moved into the trench 20 by slowly moving the barge 30 along the root of the submarine cable. Make sure it is seated correctly. That is, since the detector 50 transmits to the barge 30 by photographing the shape of the trench 20 to which the submarine cable 40 touches and the seating state of the submarine cable 40 by the camera 52, the barge 30 While visually grasping it is possible to determine whether the submarine cable 40 is seated correctly. In addition, since the signal transmitted from the transmitter 54 of the detector 50 is received by the receiver 34 of the barge 30 and the position of the detector 50 and the submarine cable 40 can be determined through the signal, the trench ( By comparing the signal of the detector 50 with the conventional GPS signal indicating the position of 20) it is possible to secure the exact position where the submarine cable 40 will be installed.

On the other hand, while checking the position of the trench 20 and the position of the submarine cable 40 in the manner described above, the submarine cable 40 is to be seated in the trench 20, the submarine cable 40 is a trench 20 As shown in the virtual line in Figure 4 of the submarine cable 40 due to various external factors such as tidal current may not be correctly seated on the bottom surface of the) may occur. Of course, this state may be confirmed by the coordinates of the signal of the detector 50. When such a condition occurs, air is injected into the buoyancy tank 56 of the detector 50 so that the submarine cable 40 connected to the ring 58 with the detector 50 is lifted by buoyancy, and then the buoyancy tank The submarine cable 40 may be adjusted to be accurately seated at the bottom of the trench 20 as shown by the solid line in FIG. 4 by releasing air from 56 and again descending and seating.

In this manner, when the work to accurately seat the submarine cable 40 in the trench 20 is completed, using a separate known equipment to cover the submarine cable 40 seated on the trench 20 with dirt to install To complete. Of course, the finishing step of the submarine cable 40 is the same as the well-known technical process, so a detailed description thereof will be omitted.

For reference, the submarine cable mentioned in the present invention will include not only a flexible cable but also a subsea pipeline to which a plurality of pipes are connected.

Applying the submarine cable laying industry according to the present invention, when laying the submarine cable can be laid while checking the form and state of the trench by using the camera, and precisely position and level on the coordinates of the submarine cable laid through the transceiver You can check it. In addition, when the submarine cable is installed in trenches excavated along the cable route, if the position is misaligned, air can be injected into the buoyancy tank of the detector to lift the submarine cable using buoyancy to accurately seat it again. Therefore, according to the present invention, even if the trench is excavated not only with the straight portion but also with the curved portion, the exact position and state can be grasped to accurately install the submarine cable along the trench.

While the invention has been shown and described in connection with specific embodiments, it will be understood that various modifications and variations can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone can grow up easily.

1 is a view showing for explaining a conventional submarine cable laying method,

2 is a view showing for explaining the submarine cable laying method according to the present invention,

3 is a side view showing a detector used in the present invention,

4 is a view showing a state in which the submarine cable is correctly seated in the trench.

◎ Explanation of symbols for main part of drawing

10: bottom 20: trench

30: barge 40: submarine cable

50: detector

Claims (4)

In the submarine cable laying method, the submarine cable is laid while lowering the submarine cable from the barge to the bottom surface of the trench excavated along the cable route of the bottom design. When the detector connected by the barge and the rope is inserted into the seabed, the detector moves along the touch point where the bottom cable (center) of the submarine cable and the trench touches, grasps the shape of the trench and the seating state of the submarine cable, and transmits a signal. Submarine cable laying method, characterized in that it comprises the step of receiving the correct operation by reference to it. The method of claim 1, The detector is configured to check the shape and state of the trench in front of the camera, the transmitter is installed in the detector and the receiver is installed in the barge, comparing the transmitted and received signals and GPS signals, and the exact position of the submarine cable Submarine cable laying method characterized in that configured to grasp the level. The method of claim 1, The detector is hooked to the outer surface of the submarine cable and is connected to the submarine cable so as to move along the submarine cable when the barge moves and detect a touch point that the submarine cable and the trench reach, and install a buoyancy tank on the detector. A submarine cable laying method, characterized in that the airborne buoyancy tank rises by buoyancy and lifts the submarine cable together to adjust the position of the submarine cable. It is installed to move along the touch point where the submarine cable and the bottom of the trench touch, the camera is mounted to check the shape and condition of the trench, and the transmitter is installed to transmit and receive with the receiver installed on the barge. When installing the buoyancy tank injecting air, the submarine cable installation method detector, characterized in that configured to lift by the buoyancy while lifting the submarine cable together.
KR1020080063348A 2008-07-01 2008-07-01 Submarine cable laying method and locator KR20100003448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080063348A KR20100003448A (en) 2008-07-01 2008-07-01 Submarine cable laying method and locator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080063348A KR20100003448A (en) 2008-07-01 2008-07-01 Submarine cable laying method and locator

Publications (1)

Publication Number Publication Date
KR20100003448A true KR20100003448A (en) 2010-01-11

Family

ID=41813241

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080063348A KR20100003448A (en) 2008-07-01 2008-07-01 Submarine cable laying method and locator

Country Status (1)

Country Link
KR (1) KR20100003448A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101590066B1 (en) 2015-08-19 2016-02-01 (주)지오티에스 Submarine cable guide device using caterpillar and submarine cable spreading monitoring system
CN105812633A (en) * 2016-05-02 2016-07-27 国家电网公司 Cable trench detector and cable trench detection method
CN107229784A (en) * 2017-05-23 2017-10-03 中国人民解放军海军工程大学 Extra large cable operation analogy method, device and service terminal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101590066B1 (en) 2015-08-19 2016-02-01 (주)지오티에스 Submarine cable guide device using caterpillar and submarine cable spreading monitoring system
CN105812633A (en) * 2016-05-02 2016-07-27 国家电网公司 Cable trench detector and cable trench detection method
CN105812633B (en) * 2016-05-02 2024-03-15 国家电网公司 Cable trench detector and cable trench detection method
CN107229784A (en) * 2017-05-23 2017-10-03 中国人民解放军海军工程大学 Extra large cable operation analogy method, device and service terminal

Similar Documents

Publication Publication Date Title
EP2420439B1 (en) Method for lowering an object to an underwater installation site using a ROV
CN104696588B (en) Deepwater subsea pipeline starting laying method
CN103527851B (en) Pre-laying process of submarine pipeline start laying system
US10435865B2 (en) Trenching assembly for laying in a trench a continuous pipeline and trenching method
CN107323633B (en) Self-elevating drilling platform lies up and its undocks method
CN107700544A (en) Off-lying sea immersed tube installation method
US20200298944A1 (en) Method for Installing a Subsea Structure
GB2429990A (en) Drilling guide frame assembly
AU2009217463B2 (en) Stabplate connections
KR20100003448A (en) Submarine cable laying method and locator
US4886395A (en) Pipeline to riser connection method and apparatus
AU2012233099A1 (en) Systems and methods for replacing, repositioning and repairing a section of subsea pipe located on a seabed
KR20150054035A (en) Jack up lig system
CN106300147B (en) Water bridge under extra large cable with laying tension force monitoring function
CN112709865A (en) Method for initial laying of ultra-deep water sea pipe by using gravity anchor
JP6389450B2 (en) Submarine cable position search method and submarine pipe position search method
AU2007244951B2 (en) Towing and recovery method for deepwater pipelines and risers
KR20090118466A (en) Installation method of the pipelines using laying barge with sub-sea anchor block
KR101549061B1 (en) Method of recover to submarine cables
KR20130070226A (en) Submarine cable laying method
CN104802925A (en) Detachment method of offshore platform propeller
KR102437573B1 (en) Method for laying of pipeline
KR101873537B1 (en) Marine pipeline installation device
CN201513127U (en) External hanging drilling slot of offshore platform
KR200428700Y1 (en) Laying and managementing system of submarine pipeline

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application