KR101763814B1

KR101763814B1 - Helideck

Info

Publication number: KR101763814B1
Application number: KR1020150131704A
Authority: KR
Inventors: 박주신
Original assignee: 삼성중공업(주)
Priority date: 2015-09-17
Filing date: 2015-09-17
Publication date: 2017-08-01
Also published as: KR20170033669A

Abstract

The present invention relates to a helideck, and a helideck according to the present invention includes a pancake installed on an offshore structure for taking off and landing a helicopter; A hatch formed in the opening of the pancake; And a fixing portion for fixing the hatch to the opening portion of the pancake. The stationary portion being fixed to the side portion of the open side of the pancake; And a fixing bolt for fixing the fixing clamp to the pancake. The hatch is installed at the opening of the pancake by the head of the fixing bolt.

Description

Helideck {HELIDECK}

The present invention relates to a helideck, and more particularly to a helideck structure capable of mounting a hatch to an aluminum pancake.

Helidecks are structures provided to offshore structures for helicopter landing / landing. In recent years, it has become increasingly important to adjust the position of offshore structures during drilling operations such as drillship, FLNG (Floating Liquid Natural Gas Plant) and floating production storage offloading (FPSO) A dynamic positioning system is being used for the system, and this system plays an important role in the operation of the main line. In the event of a failure in the thruster constituting such a dynamic positioning system, a hatch is formed in the helideck located on the athlete to be taken out of the way for repair and replacement.

Recently, a Helideck pancake structure using aluminum alloy material, which is superior in terms of weight reduction, corrosion resistance and maintenance / repair of Helideck, has been developed. A transition plate is utilized to solve the galvanic corrosion problem that may occur during bonding / joining of the dissimilar members in the helideck pancake structure. That is, the aluminum and transition plate are fastened with bolts, and the transition plate and steel H beams are welded together. However, when the helideck is made of steel, even if a certain portion of the pancake structure is constituted by a hatch, there is almost no problem of strength or connection, but in the case of the helideck pancake structure using an aluminum alloy material, There is a technical problem that needs to be solved in order to utilize a specific area of the pancake as a hatch area because a plurality of pancakes and aluminum girders are formed in a double layer and it is impossible to join by welding.

It is an object of the present invention to provide a helideck structure in which a hatch can be installed on an aluminum pancake of an offshore structure.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the description below.

A helideck according to one aspect of the present invention includes: a pancake; A hatch formed in an opening of the pancake; And a fixing part for fixing the hatch to the opening part of the pancake, wherein the fixing part comprises: a fixing clamp fixed to a side part on an opening side of the pancake; And a fixing bolt for fixing the fixing clamp to the pancake, wherein the hatch is installed at the opening of the pancake using the head of the fixing bolt.

The pancake may be made of aluminum or an aluminum alloy.

The fixing part may further include a stopper disposed between the plurality of pancake members of the pancake and fixed to the end of the fixing bolt in the vertical direction.

An insertion groove into which the head of the fixing bolt is inserted may be formed on the side surface of the hurt.

The hatch includes a hatch main body having a depression on an upper surface thereof; A hinge portion embedded in the depression; And a lug member hinged to the hinge portion in the depression and drawn out from the depression when the hatch is opened.

According to an embodiment of the present invention, a hatch can be installed on an aluminum pancake of an offshore structure.

The effects of the present invention are not limited to the effects described above. Unless stated, the effects will be apparent to those skilled in the art from the description and the accompanying drawings.

1 is a side view of a helideck 100 according to an embodiment of the present invention.
FIG. 2 is an enlarged view of the 'A' portion of FIG. 1, and is a perspective view illustrating an exemplary structure of the pancake 120 constituting the helideck according to the present embodiment.
3 is a perspective view showing a helideck 100 according to an embodiment of the present invention.
4 is an exploded perspective view showing a helideck 100 according to an embodiment of the present invention.
FIG. 5 is an enlarged perspective view of the 'B' portion of FIG. 4. FIG.
FIG. 6 is an enlarged perspective view of portion 'C' of FIG. 4. FIG.
FIG. 7 is a perspective view showing the salvage of the hatch using the lug member constituting the helideck according to the present embodiment.

Other advantages and features of the present invention and methods for accomplishing the same will be apparent from the following detailed description of embodiments thereof taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and the present invention is only defined by the scope of the claims. Although not defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. A general description of known configurations may be omitted so as not to obscure the gist of the present invention. In the drawings of the present invention, the same reference numerals are used as many as possible for the same or corresponding configurations. To facilitate understanding of the present invention, some configurations in the figures may be shown somewhat exaggerated or reduced.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises", "having", or "having" are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, parts, or combinations thereof, whether or not explicitly described or implied by the accompanying claims.

1 is a side view of a helideck 100 according to an embodiment of the present invention. Referring to FIG. 1, the helideck 100 includes a drillship, a floating liquid natural gas plant (FLNG), a floating production storage offloading (FPSO) Can be installed in the deck of the offshore structure (10). The heli-deck 100 may be designed with a polygonal, circular, or other variety of structures. In the illustrated example, the helideck 100 is installed in front of the deck house 11 of the offshore structure 10. The heald deck 100 may be supported by a deck support 16 connected to the deck house 11. The deck support 16 may be provided with a base structure such as a vertical or inclined column.

The offshore structure 10 may have a thruster canister 12 corresponding to a propulsion device, such as an omni-directional propeller. At this time, the thruster canister 12 may be positioned such that the thruster portion 13 is located below the line bottom of the offshore structure 10 during operation, and the trunk 15, together with the canister portion 14, And can be lifted vertically by a crane, a self-driving device, or the like. The pancake 120 of the helideck 100 is installed in an offshore structure such as a ship or semi-submerged structure for the take-off and landing of the helicopter.

Since the pancake 120 is installed at a position where interference occurs during lifting of the thruster canister 12, the pancake 120 is provided with an opening portion for forming a passage for lifting the thruster canister 12, A hatch 140 is installed. The hatch 140 serves as a cover for covering the opening portion for the helicopter landing and landing, and can be lifted and lifted by a crane or the like when the thruster canister 12 is lifted.

FIG. 2 is an enlarged view of the 'A' portion of FIG. 1, and is a perspective view illustrating an exemplary structure of the pancake 120 constituting the helideck according to the present embodiment. Referring to FIGS. 1 and 2, in one embodiment, the pancake 120 forms a top plate, which is a take-off and landing surface of the helicopter by a structure in which a plurality of pancake members 122 (flank) are horizontally interconnected.

Since the pancake 120 has a large area such that the helicopter can be taken off and landed, it may be difficult to manufacture the pancake 120 as a single unit. Therefore, a plurality of pancake members 122, which are unit structural members, are manufactured by extrusion molding using an alloy material (for example, an aluminum alloy), and the manufactured pancake members 122 are connected to each other to form pancake 120 may be formed.

The coupling between the adjacent pancake members 122 may be achieved by inserting the projections of the pancake member 122 at one side into the projecting grooves of the pancake member 122 at the other side. In one embodiment, the pancake member 122 may comprise a top plate, a bottom plate, and connecting plates connecting the top plate and the bottom plate. An upper and lower space is provided between the connecting plate of the pancake member 122 on one side and the connecting plate of the pancake member 122 on the other side.

A plurality of pancake members (122) are supported by a plurality of first beams (19). Only one first beam 19 is shown in Fig. The first beam 19 may be provided of aluminum or an aluminum alloy to reduce weight, ensure corrosion resistance, and reduce maintenance / repair costs. The first beam 19 can be supported by a plurality of second beams 17 disposed beneath it. Only one second beam 17 is shown in Fig. The second beam 17 may be elongated in a direction intersecting the extending direction of the first beam 19. The second beam 17 can be provided as a steel H beam so that it can be easily joined by securing the strength of the helideck and welding with the deck support 16 and the like.

A transition plate 18 is interposed between the first beam 19 and the second beam 17 in order to solve the galvanic corrosion problem which may occur in the joining / coupling of the dissimilar members. The transition plate 18 is bolted to the first beam 19 made of an aluminum alloy and welded to the second beam 17, which is a steel.

As described above, in the case of the aluminum helideck, a composite structure in which a plurality of layers of an aluminum pancake member, an aluminum H beam, a transition plate, and a steel H beam are formed and the specific area of the pancake is used as a hatched area, Should be resolved. Hereinafter, a fixing structure capable of fixing the hatch to the pancake of the aluminum helideck will be described.

FIG. 3 is a perspective view illustrating a helideck 100 according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view illustrating a helideck 100 according to an embodiment of the present invention. Figures 3 and 4 show that the helideck 100 includes a securing portion 160 for securing the hatch 140 to the opening 120a of the pancake 120.

FIG. 5 is an enlarged perspective view of the 'B' portion of FIG. 4. FIG. 3 to 5, in one embodiment, the fixing portion 160 includes a fixing clamp 162, a fixing bolt 164, and a stopper 166. [ The fixing clamp 162 is fixed to both side portions of the opening portion 120a side of the pancake 120, respectively. The fixed clamp 162 may be arranged in the longitudinal direction of the pancake member 122 and fixed to the side surface of the pancake member 122 by a plurality of fixing bolts 164.

In one embodiment, the stationary clamp 162 may be provided in a substantially "C" shape. The fixing clamp 162 may be provided in a shape corresponding to the pancake member 122. The upper plate 162a of the fixing clamp 162 is designed to be in contact with the edge face of the upper plate 122a of the pancake member 122 and the lower plate 162a of the fixing clamp 162 is fixed to the pancake member 122, The height of the fixing clamp 162 may be designed to have the same height as the connecting plate 122c of the pancake member 122. [

The fixing clamp 162 is formed with a fixing bolt 164 and a fastening hole 162c for fastening. The fixing clamp 162 may be fixed to the side surface of the pancake member 122 by fixing a plurality of fixing bolts 164 in a direction perpendicular to the pancake member 122 at regular intervals. The number of the fixing bolts 164 may be variously changed according to the size of the pancake member 122 and the like. The fixing bolt 164 may be provided as a long bolt having a length longer than the width of the pancake member 122. [ The long bolt may be provided in a shape having a wide head so that the hatch 140 can be stably fixed.

The fixing bolt 164 is inserted into the through hole 162c formed in the connecting hole 162c of the fixing clamp 162 and the plurality of connecting plates 122c connecting between the upper plate 122a and the lower plate 122b of the pancake member 122 122d and is fastened to the stopper 166 by welding or the like. The stopper 166 is fixed to the end of the fixing bolt 164 in the vertical direction and is arranged to extend in the longitudinal direction of the pancake member 122. The stopper 166 sets the tightening degree of the fixing bolt 164 so that the head portion 164a of the plurality of fixing bolts 164 is positioned along a certain direction and at the same time reinforces the strength in the vertical direction, In order to increase the fixation force of the tool.

The hatch 140 includes a hatch body 142 having a shape corresponding to the opening 120a of the pancake 120. The hatch body 142 may be made of an aluminum alloy material. An insertion groove 142a is formed in each side portion of each side of the hatch body 142 by the number of fixing bolts 164. The insertion groove 142a is formed to be equal to or slightly larger than the head 164a of the fixing bolt 164. A head portion 164a of the fixing bolt 164 is inserted into the insertion groove 142a. The height of the insertion groove 142a may be designed such that the upper surface of the hatch body 142 has the same height as the pancake 120 when the fixing bolt 164 is completely inserted. The hatch 140 is installed in the opening portion 120a of the pancake 120 by inserting the head portion 164a of the fixing bolt 164 into the insertion groove 142a.

In one embodiment, the stationary clamp 162, the stopper 166, and the fixing bolt 164 may be made of steel. According to the present embodiment, the structure emphasis of the aluminum pancake can be reinforced by fastening the fixing bolt 164 to the fixing clamp 162 and the stopper 166 on both sides of the pancake member 122. According to the present embodiment, the hatch 140 can be installed in the opening 120a of the pancake 120 by supporting the hatch 140 by the head 164a of the fixing bolt 164.

FIG. 6 is an enlarged perspective view of portion 'C' of FIG. 4, and FIG. 7 is a perspective view illustrating salvaging a hatch using a lug member constituting the helideck according to the present embodiment. 3, 4, 6, and 7, a depression 142b is formed on the upper surface of the hatch body 142 to prevent interference with a helicopter or other structures. The lug member 146 is hinged to the hinge portion 144 that is embedded in the depression 142b. When the hatch 140 is to be opened for lifting the thruster canister, the lug member 146 is drawn out from the depressed portion 142b to connect the wires of the crane, and the hatch 140 is lifted by the crane, Can be opened.

It is to be understood that the above-described embodiments are provided to facilitate understanding of the present invention, and do not limit the scope of the present invention, and it is to be understood that various modifications are possible within the scope of the present invention. It is to be understood that the technical scope of the present invention should be determined by the technical idea of the claims and the technical scope of protection of the present invention is not limited to the literary description of the claims, To the invention of the invention.

10: Offshore Structures 11: Deckhouse
12: Thruster canister 13: Thruster part
14: Canister portion 16: Deck support
17: second beam 18: traction plate
19: first beam 100: helideck
120: Pancake 120a:
122: Pancake member 140: Hatch
142: hatch body 144: hinge portion
146: lug member 160:
162: Fixing clamp 164: Fixing bolt
166: Stopper

Claims

pancake;
A hatch formed in an opening of the pancake; And
And a fixing unit for fixing the hatch to an opening of the pancake,
The fixing unit includes:
A stationary clamp fixed to a side portion of the open side of the pancake; And
And a fixing bolt for fixing the fixing clamp to the pancake,
The hatch is installed at the opening of the pancake using the head of the fixing bolt,
And an insertion groove into which the head of the fixing bolt is inserted is formed in the side surface of the hurt deck.

The method according to claim 1,
Wherein the pancake is made of aluminum or an aluminum alloy.

pancake;
A hatch formed in an opening of the pancake; And
And a fixing unit for fixing the hatch to an opening of the pancake,
The fixing unit includes:
A stationary clamp fixed to a side portion of the open side of the pancake;
A fixing bolt fixing the fixing clamp to the pancake; And
And a stopper disposed between the plurality of pancake members of the pancake and vertically fixed to the end of the fixing bolt,
Wherein the hitch is provided at an opening of the pancake by using a head of the fixing bolt.

The method of claim 3,
And the insertion groove into which the head of the fixing bolt is inserted is formed in the side portion of the hurt.

The method according to claim 1 or 3,
The above-
A hatch body having a depression on an upper surface thereof;
A hinge portion embedded in the depression; And
And a lug member hinged to the hinge portion in the depression and drawn out of the depression when the hatch is opened.