KR101368672B1 - Pipe laying system, and pipe laying ship having the same - Google Patents

Abstract

A pipe mounting system and a pipe mounting line including the same are disclosed. Pipe installation system according to an embodiment of the present invention is provided on the upper deck of the hull reel unit for supplying a pipeline; And a work unit provided on the lower deck of the hull and performing one or more of pipe connection work and pipeline installation work for a plurality of pipes.

Description

PIPE LAYING SYSTEM, AND PIPE LAYING SHIP HAVING THE SAME}

The present invention relates to a pipe installation system and a pipe installation ship including the same.

Pipe installation vessels (hereinafter referred to as 'ships') move the coast or deep sea and lay pipelines on the sea floor using the pipe installation system provided on the hull. For example, the way of installing the pipeline on the sea floor includes S-lay, J-lay, Reel-lay, Flex-lay and the like.

Here, the S-lay method is a method that is installed on the seabed while descending the pipeline obliquely S-shaped by a stinger (Stinger) to prevent the deformation of the pipe. At this time, a work line for pipe connection work is provided at the top of the hull.

In addition, the J-lay method is to install the pipe on the seabed after the pipe connection work is carried out by standing the pipe vertically using the tower.

In addition, the reel-lay method is a method of winding a pipeline produced on land to a reel and then installing the pipeline wound on the reel at sea to install it on the sea floor. At this time, the reel is usually wound around a rigid pipe, and the pipe unwinded from the reel is installed on the sea floor through the tower.

In addition, like the reel-lay method, the flex-lay method is a method in which a pipeline previously produced on land is wound or reeled on a ship's reel, and then the pipeline wound around the reel is released and installed on the sea floor. At this time, the reel is usually wound with a flexible pipe.

On the other hand, ships of the type incorporating the above-described pipeline installation method have been recently developed. For example, US Patent No. 6,371,694 (hereinafter referred to as “prior art”) has disclosed a vessel of a combination of a J-lay method and a Reel-lay method. The prior art commonly utilizes the features of the J-lay method and the Reel-lay method, which uses a tower to enter the pipeline into the water. It is a technique applied to.

However, when one or more of the above-described reel-lay and flex-lay methods and the S-lay method are combined and applied to a single ship, it is difficult to develop a ship combining them with different characteristics of the pipeline installation method. There is this.

That is, in the case of the reel-lay method, the pipeline enters the water by using the tower, whereas in the case of the flex-lay method and the S-lay method, a separate tower is not required.

In addition, the reel-lay method and the flex-lay method each have a reel wound around a previously produced pipeline on the upper part of the hull, and the pipeline wound on the reel is installed on the sea floor, whereas in the case of the S-lay method. No reels are needed.

In addition, the reel-lay method expands the pipeline when entering the pipeline underwater through the tower, while the flex-lay method guides the pipeline and enters it directly into the water. And, the S-lay method performs the pipe connection work using the work line provided on the upper hull. At this time, in the case of the S-lay method, pipe connection work is performed utilizing most of the space of the upper deck of the hull.

As such, the reel-lay method, the flex-lay method, and the S-lay method have different configurations and arrangements of the respective equipment for performing the pipeline installation work. Moreover, in case of S-lay method, pipe connection work is performed by utilizing most of hull upper deck, so when combined with one or more of Reel-lay method and Flex-lay, they are combined due to the space limitation of the upper deck of ship. Difficult to make

Patent Document 1: US Patent No. 6,371,694 (April 15, 2002 registered date)

Embodiment of the present invention by combining one or more of the Reel-lay method and Flex-lay method and the S-lay method applied to one pipe installation line to achieve a multi-purpose pipeline installation, each pipeline installation method According to the pipe installation line to reduce the production cost, and to increase the efficiency of pipeline installation work to provide a pipe installation system and a pipe installation line including the same.

According to an aspect of the invention, the reel unit is provided on the upper deck of the hull and supplies a pipeline; And a work unit provided on the lower deck of the hull and performing one or more of pipe connection work and pipeline installation work for a plurality of pipes.

The reel unit may include one or more reels winding the pipeline.

The reel is wound around a flexible pipeline, the axis of rotation may be provided in the vertical direction.

It may further include a guide for guiding the pipeline released from the reel to the work unit.

The reel is wound around a rigid pipeline, the rotation axis may be provided in the horizontal direction.

It may further include a strainer (Straightener) to pressurize and expand the pipeline released from the reel by the inner pressure roller to provide to the work unit.

The reel unit may further include a reel driving unit which rotates the reel to wind the pipeline on the reel or unwind the pipeline wound on the reel, and a frame rotatably supporting the reel.

The work unit may include a work line for performing the pipe connection work and the pipeline installation work.

The work line includes a sub-working line performed by at least one of beveling, preheating, welding and welding inspection for a plurality of pipes for the pipe-connecting work, and pipe-connecting work for the pipe produced by the sub-working line. And a main work line for performing pipeline installation work.

The main work line may include a facility for performing one or more of welding, welding inspection and coating.

Installed on the rear side of the lower deck of the hull, it may further include a stinger for supporting the pipeline entering the water through the main work line.

The controller may further include a controller configured to control operations of the reel unit and the work unit based on at least one of a preset value and an external control command.

When the pipeline supplied by the reel unit is supplied to the main work line, the control unit may operate the feed roller provided in the main work line to install the pipeline on the seabed.

When the pipe produced by the sub work line is supplied to the main work line, the control unit operates each facility included in the main work line, and the pipe and the pipe line previously produced by the main work line. Pipe connection can be performed.

According to another aspect of the present invention, a pipe installation line including a pipe installation system may be provided.

By using the pipe installation system, the pipeline can be installed on the sea floor by any one of a reel-lay method, a flex-lay method, and an S-lay method.

Pipe installation system and pipe installation line including the same according to an embodiment of the present invention is combined with one or more of the Reel-lay method and Flex-lay method and the S-lay method applied to one pipe installation line multi-purpose pipeline installation By doing the work, it is possible to reduce the production cost of pipeline installation according to each pipeline installation method, and increase the efficiency of pipeline installation work.

1 shows a vessel equipped with a pipe installation system according to an embodiment of the present invention.
2 is a cross-sectional view of the pipe installation system of FIG. 1 provided on the upper deck of the hull.
3 is a cross-sectional view of the pipe installation system of FIG. 1 provided in the lower deck of the hull.
4 is a block diagram illustrating an operation of the pipe installation system of FIG. 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a vessel equipped with a pipe installation system according to an embodiment of the present invention. 2 is a cross-sectional view of the pipe installation system of FIG. 1 provided on the upper deck of the hull. 3 is a cross-sectional view of the pipe installation system of FIG. 1 provided on the lower deck of the hull. 4 is a block diagram showing the operation of the pipe installation system of FIG.

1 to 3, the pipe installation system according to an embodiment of the present invention is a pipe installation line (hereinafter referred to as 'ship') by combining the Reel-lay method, Flex-lay method and S-lay method (1) allows for multi-purpose pipeline installations. This can reduce the production cost of each pipeline installation method and increase the efficiency of pipeline installation work.

Pipe installation system according to an embodiment of the present invention includes a reel unit 110, the work unit 120, the stinger 130 and the control unit 140 (see FIG. 4).

The reel unit 110 is provided on the upper deck 2 of the hull, and supplies the pipelines P1 and P2 to the work unit 120. In this case, the pipelines P1 and P2 are pre-produced pipelines on land, and include rigid and flexible pipelines. The reel unit 110 includes one or more reels 20 and 30, frames 22 and 32, and reel driving units 29 and 39 (refer to FIG. 4) winding the pipelines P1 and P2. . Here, the reels 20 and 30 are wound around the pipelines P1 and P2 to the hubs 25 and 35, respectively, and stiff pipes P1 are wound around the first reel 20 for convenience of description. It is assumed that the flexible pipeline is wound around the second reel 30, but is not necessarily limited thereto.

The first reel 20 may be provided with a rotating shaft 21 in a horizontal direction. The pipeline P1 wound on the first reel 20 is supplied to the front end A ′ of the strainer 74, which will be described later, along the main work line 70 which will be described later by the tensioner 76. Is moved. At this time, the first supply hole 4 provided in the hull upper deck 2 allows the pipeline P1 wound around the first reel 20 to be led to the strainer 74.

The second reel 30 may have a rotation shaft 31 provided in a vertical direction. For example, the second reel 30 is provided in a carousel form and winds a flexible cable such as an umbilical cable and a riser. The second reels 30 may be disposed in pairs on both sides of the first reel 20. At this time, the guide portion 33 for guiding the pipeline (P2) released from the second reel (30) to the main work line 70 to be described later may be provided on the upper hull deck (2). The guide part 33 is supplied to the rear end B ′ of the strainer 74 through the second supply hole 5 provided in the upper deck 2 of the pipeline P2 wound on the second reel 30. Be sure to

The frames 22 and 32 are provided in the reels 20 and 30 described above, and rotatably support the reels 20 and 30. For example, the frame 22 may be provided at both sides of the first reel 20 to support the first reel 20. In addition, the frame 32 may be provided below the second reel 30 to support the second reel 30.

The reel driving units 29 and 39 (see FIG. 4) may be provided inside the frames 22 and 32, and the reels 20 and 30 may be rotated so that the pipelines P1 and P2 are connected to the respective reels 20 and 30. Winding or unwinding the pipeline (P1, P2) wound on the reel (20, 30). That is, the reel driving units 29 and 39 rotate the drive shafts 21 and 31 coupled to the hubs 25 and 35 of the reels 20 and 30, respectively. It is possible to wind P2) or to unwind the pipelines P1 and P2 wound on the reels 20 and 30. Such reel driving units 29 and 39 may include, for example, a motor, a hydraulic device, and the like.

The work unit 120 is provided on the lower deck 3 of the hull and performs a pipe connection work, or install the pipelines (P1, P2) supplied from the reel unit 110 on the seabed. The work unit 120 includes work lines 60 and 70 for pipe connection work and pipeline installation.

The work lines 60 and 70 include a sub work line 60 and a main work line 70. Each facility included in the sub work line 60 and the main work line 70 may be controlled by the controller 140 (see FIG. 4) to be described later.

Sub-working line 60 is one or more of beveling, preheating, welding and welding inspection for a plurality of pipes (P) for the pipe connection work, and includes the respective equipment (61 ~ 63) for this. In this case, each pipe P of the sub-working line 60 may be transferred to the facilities 61 to 63 and the main work-line 70 of each sub-working line 60 by an automatic process.

The main work line 70 performs a pipe connection work and a pipeline installation work for each pipe P produced by the sub work line 60. That is, the main work line 70 performs a pipe connection operation between each pipe (P) produced by the sub work line 60 and the pre-produced pipeline by the main work line 70, for this purpose Each facility 71-73 is included. At this time, the main work line 70 during welding, welding inspection and coating using the above-described equipment (71 ~ 73) in the state in which each pipe (P) produced by the sub-work line 60 is arranged in series One or more can be done.

In addition, the main work line 70 may be provided with a strainer 74, a feed roller 77 and a tensioner (76, 78). The strainer 74 presses and straightens the pipeline P1 supplied from the first reel 20 by the inner pressure roller 74a. The feed roller 77 moves the pipe (line) along the main work line 70. In this case, the feed roller 77 may move the pipe P supplied from the sub work line 60 or the pipelines P1 and P2 supplied from the reel unit 110 along the main work line 70. . Then, the tensioners 76 and 78 move the pipeline at a constant speed to enter the water through the Stinger 130 to be described later. The tensioners 76 and 78 may be formed in the form of a plurality of caterpillars, and support the load of the pipe (line) by using friction force.

The stinger 130 is provided on the rear side of the lower deck 3 of the ship, and supports the load of the pipeline entering the water through the main work line (70).

Hereinafter, an operation process of the pipe installation system will be described with reference to FIGS. 1 through 3.

Referring to FIG. 4, the controller 140 controls the operation of each facility included in the reel unit 110 and the work unit 120 based on at least one of a preset value and an external control command.

For example, when unwinding the pipeline (P1) wound on the first reel 20 by the reel-lay method to install the pipeline (P1) on the seabed through the main work line 70, the control unit 140 By rotating the first reel 20 through the first reel driving unit 29, the pipeline P1 wound on the first reel 20 is supplied to the main work line 70. Then, the controller 140 operates the feed rollers 77 and the tensioners 76 and 78 provided in the main work line 70 to install the pipeline P1 on the seabed. At this time, the pipeline (P1) wound on the first reel 20 is supplied to the front end (A ') of the strainer 74 is moved along the main work line 70 in a state unfolded through the strainer 74.

In addition, when unwinding the pipeline (P2) wound on the second reel (30) by the flex-lay method to install the corresponding pipeline (P2) on the seabed through the main work line 70, the control unit 140 The second reel driving unit 39 rotates the second reel 30 to supply the pipeline P2 of the second reel 30 to the main work line 70, and the transfer provided in the main work line 70. The roller 77 and the tensioners 76 and 78 are operated to install the pipeline P2 on the seabed. At this time, the pipeline (P2) is supplied to the rear end (B ') of the strainer 74 by the guide portion 33 provided in the hull upper deck (2) can directly enter the main work line (70).

As described above, when pipelines are installed in the reel-lay method and the flex-lay method, the pipelines P1 and P2 previously produced on land are wound on the reels 20 and 30. Since the installation is made, the facilities 61 to 63, 71 to 73 of the sub working line 60 and the main working line 70 for performing the pipe connection work are kept in a stopped state. However, by the operation of the feed roller 77 and the tensioners (76, 78) provided in the main work line 70, the entry and installation of the pipeline (P1, P2) wound on each reel (20, 30) in the water Is done.

In addition, when the pipeline is to be installed on the seabed by the S-lay method, the control unit 140 operates each facility 61 to 63 of the sub-working line 60 to each pipe P for pipe connection work. Perform at least one of beveling, preheating, welding and welding inspection. In addition, the controller 140 operates the facilities 71 to 73 of the main work line 70 to produce the pre-production by the respective pipes P and the main work line 70 produced by the sub work line 60. The pipework with the configured pipeline. In this case, the facilities 71 to 73 of the main work line 70 may perform a pipe connection work such as welding, welding inspection and coating. In this case, the reel unit 110 is maintained in a stopped state, and the pipelines P1 and P2 are not supplied by the reel unit 110.

As such, one or more of a set value for each pipeline installation method and a control command received from the outside may be stored in the storage unit 150. The storage unit 150 may be a nonvolatile memory device or RAM such as a cache, a read only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), and a flash memory. It may be implemented as a volatile memory device such as (Random Access Memory), but is not limited thereto.

In addition, the above-described control unit 140 and the storage unit 150 may be configured as a kind of 'module'. Here, the 'module' refers to software or a hardware component such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), and the module plays a role. However, a module is not limited to software or hardware. A module may be configured to reside on an addressable storage medium and may be configured to execute one or more processors.

Meanwhile, in the above-described embodiment, the reel-lay method, the flex-lay method, and the S-lay method are combined to form a pipe installation system in which a pair of second reels 30 are arranged on both sides of the first reel 20. Although described as an example, it is not necessarily limited thereto.

For example, when the S-lay method and the Reel-lay method are combined, the second reel 30 and the guide part 33 may be omitted in the pipe installation system. In this case, one or more first reels 20 may be provided on the hull upper deck 2.

In addition, when the S-lay method and the Flex-lay method are combined, the first reel 20, the tensioner 76 and the strainer 74 may be omitted in the pipe installation system. In this case, one or more second reels 30 may be provided on the hull upper deck 2.

The foregoing has shown and described specific embodiments. However, it is to be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the scope of the technical idea of the present invention described in the following claims It will be possible.

1: pipe installation line 20, 30: reel
22, 32: frame 29, 39: reel drive unit
33: guide portion 60: sub work line
70: main work line 74: strainer
110: reel unit 120: work unit
130: Stinger 140: control unit
150:
P1, P2: pipeline

Claims (16)

Pipe installation system that performs pipeline installation work on the sea floor,
A reel unit provided on the upper deck of the hull, the reel unit including a first reel winding a rigid pipeline and a second reel winding a flexible pipeline;
A subworking line provided in the lower deck of the hull and performing one or more of beveling, preheating, welding and welding inspection for a plurality of pipes, and supplied from the first or second reel for pipeline installation A work unit including a main work line for transferring the finished pipeline to a stinger installed at the rear side of the lower deck, or performing a pipe connection operation on a pipe supplied from the sub-working line to the stinger;
A strainer provided on the lower deck and pressurizing and expanding the pipeline supplied from the first reel to provide the main work line; And
And a control unit for controlling the operation of the reel unit and the work unit according to a method of installing a pipeline.
When the controller installs a pipeline on the seabed in a reel-lay manner based on at least one of a preset value and an external control command, the pipeline of the first reel is supplied to the front end of the strainer and pressed by the strainer. When opened to be provided to the main work line, when installing the pipeline by the flex-lay method, the pipeline of the second reel is supplied to the rear end of the strainer to be provided directly to the main work line, S-lay method When installing the pipeline by the pipe, the pipe installation system for supplying the pipe of the sub-work line to the main work line to perform the pipe connection work. delete delete The method of claim 1,
Pipe installation system further comprising a guide for guiding the pipeline of the second reel to the main work line. delete delete The method of claim 1,
The reel unit includes a reel driving unit for rotating the first reel and the second reel, respectively, to wind or unwind the pipeline;
And a frame for rotatably supporting the first reel and the second reel. delete delete The method of claim 1,
The main work line pipe installation system including a facility for performing at least one of welding, welding inspection and coating for the pipe connection work. delete delete delete delete Pipe installation ship comprising a pipe installation system according to any one of claims 1, 4, 7, and 10. 16. The method of claim 15,
Pipe installation line for installing the pipeline on the seabed by any one of the method of Reel-lay, Flex-lay and S-lay method using the pipe installation system.

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