KR20150003767U - An maintenance Equipment for Safe Distance between Pipeline and Cable on the Seabed - Google Patents

Abstract

The present invention relates to a safety clearance apparatus for installing a submarine pipe and a submarine cable, and more particularly, to an apparatus for installing a submarine pipeline, This is related to a safety clearance equipment for installation of a submarine pipe and submarine cable to increase productivity of work.
A pair of spacing arms extending from both sides of the body, a pair of spacing arms extending from both sides of the body, a pair of spacing arms extending from both sides of the spacer, A pipe guiding part which is guided along the bottom pipe, a cable guide part which is installed at a gap holding arm end of the other side of the body and moves along the cable when the body is supported by supporting the cable, Maintenance equipment.

Description

[0001] The present invention relates to an apparatus for maintaining a clearance between an underwater pipe and a submarine cable,

The present invention relates to a safety clearance apparatus for installing a subsea pipe and a submarine cable, and more particularly, to a subsea pipe and a submarine cable installed in an undersea pipe, Safety clearance maintenance equipment.

In general, crude oil or gas extracted from marine crude oil or marine gas extraction facilities is transported to land storage facilities via subsea pipelines.

Thus, submarine pipelines are formed to extend from offshore oil or gas extraction facilities to onshore storage facilities, with lengths ranging from several tens of kilometers to several hundred kilometers.

The subsea pipelines laid out in this way usually have a diameter of 0.5 to 1.5 m or more and a unit pipe of about 12 m in length, which are connected by thousands or tens of thousands of pipes, so that the total length of the subsea pipelines is several hundred km to several hundred km .

The method of installing such an undersea pipeline includes a pulling method in which a relatively short length pipe manufactured on the land is pulled to the sea floor using a tugboat (barge) Floating and sinking method is a floating and sinking method in which a buoyant tank is attached and floated to a tug to a laying position in a state floated above sea level or below sea level or below sea level, and a lay barge method in which a bottom pipe and a single pipe are welded to each other in a construction line (barge line), and the subracks are sequentially moved and settled.

In this way, a submarine pipeline embedded in the seabed is provided with a cable for supplying power for automatically opening and closing a valve installed on a submarine communication cable or a submarine pipe for communication between marine crude oil or marine gas extraction facilities and land storage facilities, .

1, there are a number of tensioners 3 installed on the upper surface of the work line 1 for holding the pipe 2 and a tensioner 3 for holding the pipe 2, Which is installed at the deck end of the working line 1 so as to be positioned between the final tensioner 3 and the stinger 5 and smoothly feeds the pipe 2 transferred through the tensioners 3 to the stinger 5 side A half track 4 and a stitcher 5 provided at an inclination between the deck end of the working line 1 and the seabed so as to function as a buoyancy adjustable underwater support and to guide the pipe 2 to the seabed Respectively.

At this time, the stinger 5 is mounted on the end of the maritime work line 1 to smoothly move the pipe 2 by the sea floor. In such a stinger, several rollers are arranged at left and right sides with a predetermined distance, In the direction of the arrow.

On the other hand, the pipes and cables are settled at predetermined positions on the seabed through the sea operation lines, and then separated from each other by a predetermined distance.

This is to prevent damage caused by contact between the pipe and the cable, the spacing being approximately 10 m.

At this time, after the pipe is installed, the cable is installed at a predetermined interval on one side of the pipe through a separate working line.

As described above, since each work line is operated in the process of installing the pipe and the cable, there is a problem that the efficiency of work for installing the submarine pipeline is low.

In addition, there has been a problem in that the operation cost due to operation of the work line is increased, and the convenience of work for maintaining the gap between the pipe and the cable uniformly is poor.

Republic of Korea Publication No. 10-2013-0068442

The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an apparatus and a method for installing a submarine pipe and a submarine cable, To provide safety clearance maintenance equipment.

According to an aspect of the present invention, there is provided a seat for a vehicle, comprising: a body including a heavy object and having a crown at an end thereof, a pair of spacing arms extending from both sides of the body, A pipe guiding part coupled to the pipe and guided along the submarine pipe when the body is moved; a cable guide part installed at the other end of the gap holding arm end and supporting the cable and moving along the cable when the body is moved; Provide safety clearance equipment for submarine cable installation.

At this time, it is preferable that an upwardly turned skidding unit is installed at the tip of the body toward the front of the body so as to minimize the resistance to the bottom of the sea floor when the body is moved.

Preferably, the pipe guide portion is formed with a guide groove corresponding to the outer diameter of the pipe so as to open downward.

In addition, it is preferable that the cable guide portion is formed such that a seating groove on which a cable is seated is opened upward.

At this time, it is preferable that the cable guiding part is further provided with a cable protective part bent downwardly and inclinedly at the front end and the rear end, respectively.

According to the present invention, the apparatus for maintaining the safety gap in the installation of the submarine pipe and submarine cable has the following effects.

Since the gap maintenance work between the pipe and the cable can be performed at once, it is possible to increase work productivity for the installation work of the bottom pipe.

In other words, since the pair of spacing arms provided on both sides of the body while the body moves by the marine work line arranges and maintains the interval between the pipe and the cable while guiding the pipe and the cable which are stretched on the sea floor, The interval maintenance work can be performed at once.

Accordingly, it is possible to reduce the cost of operating the maritime operation line and improve the work productivity by improving the work speed of installing the submarine pipeline.

1 is a side view showing a maritime work line for installing a seabed pipe
Fig. 2 is a perspective view showing a state in which the apparatus for maintaining safety clearance is installed on a submarine pipe and a cable in the case of installing a submarine pipe and a submarine cable according to a preferred embodiment of the present invention
Fig. 3 is a front view showing a state in which a safety gap maintaining equipment is installed on a submarine pipe and a cable when a submarine pipe and a submarine cable are installed according to a preferred embodiment of the present invention
FIG. 4 is a plan view showing a state in which a safety gap maintenance equipment is installed on a submarine pipe and a cable when a submarine pipe and a submarine cable are installed according to a preferred embodiment of the present invention
FIG. 5 is a plan view showing a state in which a gap between a submarine pipe and a cable is kept constant while a submarine pipe and a submarine cable according to a preferred embodiment of the present invention are installed on a submarine pipe and a cable.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to best describe its own design in the best way It should be construed as meaning and concept consistent with the technical idea of the invention.

Hereinafter, the safety gap maintaining equipment (hereinafter referred to as 'spacing maintenance equipment') for installing the submarine pipe and the submarine cable according to a preferred embodiment of the present invention will be described with reference to FIGS. 2 to 5 attached hereto.

The spacing maintenance equipment has a technical feature that allows the spacing between the subsea pipes and cables to be easily maintained before they are buried in the seabed.

The gap maintaining apparatus includes a body 100, a gap holding arm 200, a pipe guide unit 300, and a cable guide unit 400.

The body 100 is arranged in the middle between the bottom pipe P and the cable C and serves as a reference, and is a portion to be dragged on the maritime work line.

The body 100 is disposed on the seabed and comprises a weight 110 so as not to float on the sea.

The material and shape of the body 100 are not limited, and for the sake of better understanding of the explanation, the body 100 has a hexahedral shape.

In this case, the heavy object 110 and the body 100 may be formed integrally with each other. As shown in FIG. 2, the body 100 and the heavy object 110 may be provided separately from each other, So that the weight 110 can be accommodated.

A lifting hook 120 is further provided at the distal end of the body 100.

The lifting hook 120 is a connecting medium for connecting the pulling wire W of the lifting work line so that the body 100 can be pulled by the lifting work line.

Further, it is preferable that a skiving portion 130 is further formed on the bottom surface of the front end portion of the body 100.

The body 100 is moved by dragging with the marine work line in a state where it is seated on the seabed instead of generating power by itself, as described above. In this process, the skidding unit 130 generates interference or resistance to the front obstacle .

The skidding portion 130 is formed to be rounded upward from the bottom surface of the front end portion of the body 100.

Since the structure of the body 100 is similar to that of a sled, it can be understood that it can be effective at the time of running on the bottom of the sea floor.

Next, the gap maintaining arm 200 maintains a constant distance between the bottom pipe P and the cable C. And extend from both sides of the body 100, respectively.

The gap holding arms 200 are provided as a pair and are provided with gap holding arms 210 (hereinafter referred to as pipe arms) extending toward the bottom pipe P, (Hereinafter referred to as a "cable arm") 220.

The lengths of the gap holding arms 210 and 220 are preferably equal to each other, and the length thereof is not limited.

Next, the pipe guide unit 300 is guided along the underside pipe P disposed on the bottom of the gap holding arm 200, that is, the pipe arm 210.

The pipe guide 300 is connected to the bottom pipe P so as to maintain a gap between the cable C and the bottom pipe P and forms a guide groove 310 opened downward.

At this time, the inner diameter of the guide groove 310 corresponds to the outer diameter of the seabed pipe P.

According to the structure of the pipe guide unit 300, the pipe guide unit 300 can cover the submarine pipe P disposed on the seabed from above.

Next, the cable guide unit 400 guides the cable C disposed on the seabed and aligns the cable C so as to be spaced apart from the bottom pipe P by a predetermined distance.

The cable guide portion 400 is formed at the other end of the space holding arm 200, that is, at the end portion of the cable arm 220, and is disposed at a position spaced upward from the sea floor.

In addition, the cable guide part 400 is opened upward and forms a seating groove 410 in which the cable C is seated.

In addition, it is preferable that a cable protecting part 420 is further formed on the front end and the rear end of the cable guide part 400, respectively.

The cable protection piece 420 is damaged by the cable C being bent through the end of the cable guide part 400 in the process of guiding the cable C to one side of the submarine pipe P while moving the body 100. [ .

That is, since the cable guide portion 400 is disposed at a position spaced upward from the sea floor, the cable C seated in the seating groove 410 is stretched toward the seabed at the rear end of the cable guide portion 400 It will be crushed.

At this time, since the body 100 moves while the cable C is in contact with the line and the rear end edge of the cable guide part 400, the cable C may be damaged.

In order to prevent such a problem, since the cable protection piece 420 is formed at the line and the rear end of the cable guide part 400, it is possible to flex the cable C and prevent the cable C from being damaged will be.

As shown in FIG. 2, the cable protection member 420 is bent downwardly from each of the front and rear ends of the cable guide unit 400.

Accordingly, since the cable C is arranged so as to be smoothly floated along the cable protection piece 420, it is possible to prevent the cable C from being damaged when the body 100 is moved.

Hereinafter, the operation of the gap maintaining equipment having the above-described structure will be described.

The subsea pipe (P) and the cable (C) are settled down to the seabed.

At this time, the gap between the bottom pipe P and the cable C is arranged in a non-uniform state.

Thereafter, the gap maintaining equipment is settled down to the seabed so that the pipe guide portion 300 is covered on the bottom pipe P.

At this time, the cable (C) is seated in the seating groove (410) of the cable guide part (400).

Then, the pulling wire W of the maritime work line is hooked to the lifting hook 120 of the body 100 and connected.

3 and 4, and then, when pulling the pulling wire W through the movement of the marine work line, the gap maintaining equipment moves along the bottom of the seabed.

At this time, the body 100 can smoothly advance due to the formation of the skid portion 130.

The pipe guide portion 300 is moved along the submarine pipe P while covering the submarine pipe P and the cable guide portion 400 is maintained at the same spacing distance with respect to the submarine pipe P The cable C is arranged on the bottom of the sea floor.

As the gap maintaining equipment moves, the bottom pipe P and the cable C are spaced apart from each other as shown in FIG.

As described above, the safety clearance equipment for the installation of the submarine pipe and submarine cable according to the present invention has a technical feature that it is possible to easily carry out the gap maintenance work between the submarine pipe and the cable at the same time when installing the submarine pipeline.

As a result, it is possible to increase work productivity in the subsea pipeline installation work.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

100: Body 110: Weight
120: lifting ring 130: skid portion
200: gap holding arm 210: pipe arm
220: Cable arm 300: Pipe guide part
310: guide groove 400: cable guide portion
410: seat groove 420: cable protection piece

Claims (5)

A body including a weight and having a lifting ring formed at a distal end thereof;
A pair of spacing arms extending from both sides of the body;
A pipe guide installed at an end of the gap holding arm on one side of the body and guided along the submarine pipe when the body is moved,
And a cable guiding part which is installed at a gap holding arm of the other side of the body and moves along the cable when the body is supported by supporting the cable. The method according to claim 1,
Wherein an upwardly rounded skidding portion is further installed at a front end of the body toward the front of the body so as to minimize the resistance to the bottom of the sea bottom when the body is moved. 3. The method according to claim 1 or 2,
The pipe guide portion
Wherein a guide groove corresponding to an outer diameter of the pipe is formed to open downward. 3. The method according to claim 1 or 2,
The cable guide portion
Wherein a seat groove on which the cable is seated is formed so as to open upward. 5. The method of claim 4,
Wherein the cable guiding portion is further provided with a cable protection member bent downwardly and inclinedly at the distal end portion and the rear end portion thereof, respectively.

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