KR101422771B1

KR101422771B1 - Riser handling device and ship having the device

Info

Publication number: KR101422771B1
Application number: KR1020130040289A
Authority: KR
Inventors: 송수한; 장정문; 한성종
Original assignee: 삼성중공업 주식회사
Priority date: 2013-04-12
Filing date: 2013-04-12
Publication date: 2014-08-14

Abstract

Disclosed are a riser handling device and a ship having the same. The riser handling device according to an embodiment of the present invention includes: a moving table which moves to the loading position of a riser to be handled inside a transfer groove; a support table placed on top of the moving table to grab or lift the riser by conversion of the table surface in accordance with the operation of a conversion link; and a control unit for controlling the operation of the support table and the movement of the moving table.

Description

Riser handling device and ship having the same -

The present invention relates to a riser handling apparatus and a ship having the riser handling apparatus.

The drilling riser is a type of equipment for subsea oil and gas field excavation. It is a large diameter pipe connecting a subsea blowout preventer stack and a floating surface. For example, 18 3/4 "or the like.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view of a marine structure with a drilling riser.

Referring to FIG. 1, a drill pipe 2 is inserted through the inside of the riser 1 and formed with a drill bit 3 at its end.

A mud such as drilling fluid is fed downward through the inside of the drill pipe 2 and the mud is supplied to the drill pipe 2 along with the drill cuts between the drill pipe 2 and the riser 1 And returns in an upward direction through the space. That is, the riser 1 functions as a return path for returning the mud.

In this way, the riser (1), which is essential for offshore structures for drilling, is stored in the drillship or drilling jackup, but is an additional equipment required during operation.

In order to distribute the riser, the riser is loaded with a vessel capable of shipping the riser, and the vessel is shipped to an offshore structure such as a drill ship or a drilling jack-up using a crane.

However, these vessels are loaded tightly on the riser deck in view of shipping efficiency, and there may be difficulties in moving the riser for drilling.

The present invention provides a riser handling device and a ship having the riser handling device, which facilitates the handling of a long or round pipe-shaped handle on the upper part of the ship.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, there is provided a moving table, comprising: a moving table moving in a conveyance groove to a loading position of a riser to be handled; A support table mounted on the moving table and adapted to grab and lifting the riser by converting the table surface according to the operation of the converting link; And a control unit for controlling movement of the movable table and operation of the support table.

The support table may hold the table surface horizontally at the time of loading or normalizing the riser, and may form an inclined portion where both sides of the table surface are inclined upward when the riser is unloaded.

Wherein the support table comprises: a main table mounted vertically movably in an upper portion of the movable table; And a pair of sub tables hinged to both sides of the main table.

The conversion link includes: a pair of fixed arms, one end of which is fixedly coupled to the lower surface of each of the pair of sub-tables in a vertical direction; And a pair of cylinders, one end of which is hinged to the lower surface of the main table and the other end of which is hinged to the other end of each of the pair of fixed arms.

Wherein the control unit operates the pair of cylinders so that the length of the pair of cylinders is extended outward so that the pair of sub tables fixedly coupled to the pair of fixed arms are moved toward the main table by a predetermined angle .

According to another aspect of the present invention, there is provided a method of manufacturing a riser handling apparatus, comprising the steps of: preparing a riser handling apparatus that is movable along a transfer line in a direction intersecting a longitudinal direction of a riser loaded in a transfer groove formed in a deck for loading a riser / RTI >

The surface of the support table of the riser handling device may have a height below the surface of the deck.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to an embodiment of the present invention, there is an effect of facilitating the handling of a riser or similar long round pipe type on top of the vessel.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view of a marine structure with a drilling riser,
2 is a view showing a ship equipped with a riser handling apparatus according to an embodiment of the present invention,
3 is a cross-sectional view of a riser handling apparatus according to an embodiment of the present invention,
4 is a cross-sectional view illustrating an operation of a riser handling apparatus according to an embodiment of the present invention;

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Also, the term "part" or the like, as described in the specification, means a unit for processing at least one function or operation, and may be implemented by hardware, software, or a combination of hardware and software.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

2 is a view illustrating a ship equipped with a riser handling device according to an embodiment of the present invention. 2, a riser 1, a ship 10, a deck 20, a feed groove 30, and a riser handling device 100 are shown.

The ship according to an embodiment of the present invention is characterized in that the cargo is separated one by one in the process of loading or unloading the cargo of the riser or similar long and round pipe type to make the work space convenient for the transportation operation.

Hereinafter, the present invention will be described with reference to a typical riser as a long round pipe type cargo. However, the scope of the present invention is not limited thereto, and it goes without saying that the same technical idea can be applied to a cargo of pipe type.

The ship 10 according to the present embodiment includes a deck 20 for loading one or more risers and a lifting and lowering mechanism for grabbing and lifting one of the stacked risers in the feed groove 30 formed in the deck 20. [ and a riser handling device 100 for lifting the wafer.

The ship 10 is loaded with one or more risers 1 on top of a deck 20 for cargo loading and then operated to an offshore structure such as a drill ship or drilling jack up that requires a riser, ).

The conveyance groove 30 is formed in the lower portion of the deck 20 in a direction transverse to the risers 1 mounted on the deck 20, that is, in a direction intersecting the longitudinal direction of the riser 1. [ The riser handling apparatus 100 reciprocates along the feed groove 30 in the feed groove 30 and separates one of the risers from the loaded risers through the gripping and lifting operation to separate the other structures (for example, Marine structures, ports, etc.).

A signal line, a power supply line, and a mechanical structure may be provided in the feed groove 30 to allow movement of the riser handling apparatus 100, gripping and lifting of the riser, and the like.

Hereinafter, the path along which the riser handling apparatus 100 moves along the feed groove 30 will be referred to as a feed line AA '. Hereinafter, the configuration and operation of the riser handling apparatus 100 will be described with reference to cross- I will explain.

3 is a cross-sectional view of a riser handling device according to an embodiment of the present invention, along a transfer line. 3, the riser handling apparatus 100, the moving table 110, the supporting table 120, the main table 122, the sub tables 124 and 126, the hinge shafts 123 and 125, 130, cylinders 131, 133, and fixed arms 132, 134 are shown.

The riser handling apparatus according to an embodiment of the present invention is configured to reciprocate along a conveyance groove formed in a cargo loading deck of a ship for conveying a riser and grasping and lifting a riser placed at a predetermined position, .

Referring to FIG. 3, a riser handling apparatus 100 according to an embodiment of the present invention includes a moving table 110, a supporting table 120, and a control unit (not shown).

The moving table 110 is moved forward and backward (left and right in Fig. 3) along the conveying line in the conveyance groove formed in the cargo loading deck of the ship for conveying the riser. At least one of various horizontal moving structures such as a linear guide structure, a rail structure, and a rack and pinion structure may be applied to the moving table 110, for example.

On the upper part of the moving table 110, a support table 120 is vertically movably mounted.

The support table (120) maintains its horizontal height during cargo loading or normal operation, and its top surface has a height below the cargo loading deck level.

Both sides of the table surface are inclined upward to move the riser by the operation of the conversion link 130 after the moving table 110 moves downward of the riser to be separated. The supporting table 120 is lifted up against the moving table 110 so that the grippers gripped by the lifting table 120 are lifted upwards and separated from the loaded other risers, thereby facilitating easy unloading.

The support table 120 includes a main table 122 and two sub tables 124 and 126 and the conversion link 130 includes cylinders 131 and 133 and fixed arms 132 and 134.

The main table 122 is located at the upper portion of the moving table 110 and is connected to the moving table 110 through a jack structure so that the main table 122 can be vertically moved as required. Here, the jack structure raises or lowers the main table 122 using, for example, hydraulic pressure.

The two sub tables 124 and 126 are hinged about the hinge axes 123 and 125 on both sides of the main table 122.

One end of each of the fixed arms 132 and 134 is vertically fixedly coupled to the lower surface of the two sub tables 124 and 126. Both ends of the cylinders 131 and 133 are hinged between the other end of the fixed arms 132 and 134 and the lower surface of the main table 122.

A control unit (not shown) controls the movement of the moving table 110 and the holding and lifting of the supporting table 120.

The control unit recognizes the current position of the movement table 110 and generates and outputs a control signal for moving the movement table 110 to the loading position of the riser to be handled.

When the movable table 110 is moved to the loading position of the riser to be handled, the control unit operates the cylinders 131 and 133 so that the support table 120 grasps the riser, The table 120 is raised.

The operation of the riser handling apparatus 100 will be described in detail with reference to FIG.

4 is a cross-sectional view illustrating an operation of a riser handling apparatus according to an embodiment of the present invention. Here, it is assumed that the riser handling apparatus 100 distinguishes an arbitrary riser 1 from other risers and facilitates handling such as unloading work.

The moving table 110 moves along the conveyance groove formed in the cargo loading deck of the ship for conveying the riser and moves to the lower portion of the riser 1 to be handled. Unloading work is usually carried out sequentially from the outermost riser, but the loading and unloading may be performed in any order as required.

The movement of the movable table 110 may be performed using a linear guide, a rail, a rack and pinion, or the like, as described above. The position of the moving table 110 can be determined by analyzing sensing data of a sensor (for example, a position sensor) installed in the riser handling apparatus 100.

When the moving table 110 reaches the lower portion of the riser 1 to be handled, the cylinders 131 and 133 of the converting link 130 linearly move in the extending direction thereof, 124 and 126 are rotated about the hinge shafts 123 and 125 by a predetermined angle toward the main table 122 to form inclined portions on both sides of the main table 122. That is, sub-tables 124 and 126 inclined to both sides around the main table 122 grip the riser 1 to prevent the riser 1 from moving left and right.

More specifically, when the first cylinder 131 linearly moves in a direction in which the length of the first cylinder 131 is extended due to the action of hydraulic pressure or the like (right direction in the drawing), the first cylinder 131 is hingedly coupled to the first fixed arm 132, The first sub-table 124 rotates about the first hinge shaft 123 (rotates in the counterclockwise direction in the figure) to form a right-side inclined portion.

When the second cylinder 133 linearly moves in the direction in which the length of the second cylinder 133 is extended due to the action of hydraulic pressure or the like, the second fixed arm 134 and the second sub- The table 126 rotates about the second hinge shaft 125 (clockwise in the drawing) to form a left slope.

By using the left and right inclined portions thus formed, it is possible to grip the riser 1 so that the movement of the riser 1 is minimized.

When the gripping of the riser 1 is completed, the moving table 110 lifts the support table 120 upwardly to separate the gripper 1 from the other risers, thereby creating a working space for unloading, Conveniently.

Once the work space is secured, workers move near the riser 1 to connect the riser handling equipment of the handling crane to the riser 1 and lift the riser 1 to perform the necessary loading operations Can be completed.

Unlike the loading and unloading operation, when the riser is loaded on the vessel for conveying the riser, the main table 122 and the sub tables 124 and 126 are placed in a state of keeping horizontal (see FIG. 4A) . In this case, the riser can be stacked on top of it once it is leveled at the same or lower level than the cargo loading deck surface.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims And changes may be made without departing from the spirit and scope of the invention.

1: riser 10: ship
20: Deck 30: Feeding groove
100: Riser handling device 110: Moving table
120: support table 122: main table
124, 126: Sub-table 123, 125: Hinge axis
130: conversion link 131, 133: cylinder
132, 134: fixed arm

Claims

A moving table for moving to a loading position of the riser in the transfer groove;
A support table mounted on the moving table and adapted to grab and lifting the riser by converting the table surface according to the operation of the converting link; And
And a control unit for controlling movement of the movement table and operation of the support table.

The method according to claim 1,
Wherein the support table holds the table surface horizontally at the time of loading or normalizing the riser and forms an inclined portion where both sides of the table surface are inclined upward when the riser is unloaded.

The method according to claim 1,
Wherein the support table comprises:
A main table which is vertically movably mounted in an upper portion of the moving table;
And a pair of sub tables hinged to both sides of the main table.

The method of claim 3,
The conversion link comprises:
A pair of fixed arms, one end of which is fixedly coupled to the lower surface of each of the pair of sub-tables in a vertical direction;
And a pair of cylinders, one end of which is hinged to the lower surface of the main table and the other end of which is hinged to the other end of each of the pair of fixed arms.

5. The method of claim 4,
Wherein the control unit operates the pair of cylinders so that the length of the pair of cylinders is extended outward so that the pair of sub tables fixedly coupled to the pair of fixed arms are moved toward the main table by a predetermined angle As shown in Fig.

A riser handling apparatus according to any one of claims 1 to 5, which is movably installed along a transfer line in a direction intersecting the longitudinal direction of a riser loaded in a transfer groove formed in a deck for loading a riser Ship.