KR200435347Y1 - Apparatus for air resistance reduction of floating production storage offloading ship - Google Patents

Abstract

The present invention is based on the front of the hull such as LNG carrier, Floating Production Storage Offloading (FPSO), Crude Oil Drilling Ship, Gas Drilling Ship, and LNG Floating Production Storage Offloading (LNG FSRU). Installed in the site, to prevent the reduction of the propulsion force corresponding to the air resistance or air load, and to provide an air resistance reduction device of the production storage ship that can reduce the operating cost or fuel cost of the vessel.

The air resistance reduction device of the production storage ship of the present invention is installed in the hull 10, a part of the cargo hold structure 20 protrudes into the upper deck 11, the upper end of the front side 21 of the cargo hold structure 20 It includes a plate-shaped front structure (30.300) extending from the corner to the upper deck upper portion 11 of the hull 10 in the inclined downward direction.

Air Resistance, Front Structure, Deck, Adjustable, Folding

Description

Apparatus for air resistance reduction of floating production storage offloading ship}

1 is an enlarged perspective view illustrating a production storage ship according to the prior art.

2 is an enlarged perspective view illustrating an air resistance reduction apparatus of a production storage ship according to a first embodiment of the present invention.

3 and 4 are a side view of a portion cut and enlarged to explain the air resistance reduction device of the production storage ship according to a second embodiment of the present invention.

                <Description of the symbols for the main parts of the drawings>

10: hull 20: cargo hold structure

30, 300: front structure 310: movable device

320: gear device 330: first hinge portion

340: first plate member 347: second hinge portion

350: second plate member 360: rolling roller

The present invention relates to a device for reducing air resistance of a production storage vessel, and more particularly, offshore oil-drilling platforms (FPSO), floating production storage offloading (FPSO), In production storage vessels, such as crude oil drilling vessels, gas drilling vessels, or LNG Floating Production Storage Offloading (LNG FSRU), the reduction in air resistance of production storage vessels that reduces the effects of air resistance or air load. Relates to a device.

Increasing oil prices and the depletion of terrestrial oilfields have increased interest in deep-sea oilfields, and the design and development of ships that transport and store crude oil or gas obtained through such deep-sea oilfields is being actively conducted.

For example, the Floating Crude Oil Production Storage Facility (FPSO) is a floating offshore oil refinery that is capable of refining and storing crude oil in the form of a ship, and the floating liquefied gas storage vessel (LNG FSRU) is also at sea. A large vessel capable of storing and transporting gas in a suspended state, in addition to a large LNG carrier, is a large vessel having a hull suitable for storing and transporting a large amount of liquefied natural gas.

In the case of the hull 1, such as the LNG carrier shown in Figure 1, the upper portion of the cargo hold structure (2) protrudes to the upper deck, so that the air resistance due to the wind during the progress of the carrier to other ship types It has a structure that is greatly received.

For example, in the membrane type LNG carrier, the membrane-shaped cargo hold structure 2 or the like is formed in a hexagonal shape, and the lower portion of the cargo hold structure 2 is present in the hull 1.

In addition, the upper portion of the cargo hold structure (2) protrudes to the upper deck, wherein the inclined both sides of the upper portion of the cargo hold structure (2) is connected to the upper deck, while the upper portion of the cargo hold structure (2) The front side is perpendicular to the upper surface of the upper deck.

Therefore, when the wind is received from the front of the hull 1, the air resistance is more generated in the front side of the upper portion of the protruding cargo hold structure 2, thereby reducing the propulsion force of the ship, operating expenses of the ship (eg Inefficiencies such as: fuel cost) have been pointed out as a problem.

The purpose of the present invention devised to solve these problems is, liquefied natural gas carrier, floating production storage offloading (FPSO), crude oil drilling vessel, gas drilling vessel, floating liquefied gas storage vessel (LNG FSRU) Installed at the front of the hull such as LNG Floating Production Storage Offloading, etc., it prevents the reduction of propulsion force corresponding to air resistance and air load, and reduces the air resistance of the production storage ship, which can reduce the operating cost or fuel cost of the ship. To provide a device.

An object of the present invention as described above, in the air resistance reduction device of the production storage vessel, a portion of the cargo hold structure protruding on the upper deck, the hull in the downward direction from the top corner of the front side of the cargo hold structure. It is achieved by a device for reducing the air resistance of the production storage ship comprising a plate-shaped front structure extending to the upper deck of the.

In addition, the front structure of the present invention is preferably a fixed or variable structure.

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

First embodiment

2 is a side view showing an enlarged perspective view for explaining the air resistance reduction device of the production storage ship according to the first embodiment of the present invention.

2, the air resistance reduction apparatus according to the first embodiment of the present invention means a first front structure 30, such as a fixed structure.

In the description of the present invention, the production storage vessel includes at least a floating crude oil production storage facility (FPSO), a floating liquefied gas storage vessel (LNG FSRU), a large LNG carrier including a membrane type, and the like.

In addition, the production storage ship of the present invention has a cargo hold structure 20 capable of purifying, storing, transporting crude oil or gas, such as offshore oil drilling equipment, crude oil drilling vessel, gas drilling vessel, drill ship, etc. It can be applied to any ship.

In the description of the present invention, the front portion of the hull 10 means between the upper deck 11 of the hull 10 and the front side 21 of the cargo hold structure 20.

The hull 10 of the present invention has a plate-shaped front structure 30 which extends from the upper corner of the front side 21 of the cargo hold structure 20 to the upper deck upper portion 11 in the downward inclined direction.

The front structure 30 minimizes the air resistance by rejecting the wind blowing during the operation of the ship or the wind blowing in the natural state to the upper portion of the cargo hold structure 20 corresponding to the inclination angle or installation angle of the front structure 30 Play the role of

The front structure 30 is made of the steel used in the hull 10, it is preferable that the coating material for ships on the outer surface of the steel is further provided so that corrosion does not occur well or even in seawater, fog and the like. .

The front structure 30 is disposed downwardly inclined, and then the upper and lower ends of the front structure 30 are welded to the upper corner of the front side 21 of the cargo hold structure 20 and the upper deck upper 11, respectively. It is preferred that they are joined and fixed in a manner.

Both sides of the front structure 30 is open, the inner space of the front structure 30 can be used as a space, such as cargo loading or passageway.

In addition, both sides of the front structure 30 is sealed by a separate triangular side plate (not shown), it is preferable that at least one side plate is equipped with a door.

In addition, a separate reinforcement (not shown) is further bonded to the inside of the front structure 30, so that the front structure 30 can be firmly supported and reinforced on the cargo hold structure 20 or upper deck 11, of course. to be.

Second embodiment

In the drawings, Figures 3 and 4 are cutaway and enlarged side views for explaining a device for reducing the air resistance of the production storage ship according to a second embodiment of the present invention.

3 and 4, the air resistance reduction apparatus according to the second embodiment of the present invention means a second front structure 300, such as a variable structure.

The second front structure 300 is also installed in the front portion of the hull 10, meaning between the upper deck top 11 of the hull 10 and the front side 21 of the cargo hold structure 20.

At this time, the second front structure 300 is at least at the end of the first plate member 340 or the first plate member 340 by using the movable force generated by any one of the power source, hydraulic pressure, pneumatic pressure. The second plate member 350 that is foldably coupled through the second hinge portion 347 is configured to move from the initial position to the inclined position.

For example, the second front structure 300 includes a movable device 310 such as a motor for generating a movable force; A gear device 320 coupled to receive a movable force from the movable device 310 to generate an increased torque force; A shaft member having driven gears engaged with the output gears of the gear device 320 is fixed to one side at the upper corner of the front side 21 of the cargo hold structure 20 and hinged to the other side to enable hinge operation. A first hinge portion 330; A first plate member 340 having a planar shape or a curved shape fixed to the other side at which the hinge operation is possible at the first hinge part 330; A second plate member 350 foldably coupled through a second hinge portion 347 at the end of the first plate member 340; It includes a plurality of rolling roller 360 mounted on the free end side of the second plate member 350.

In particular, both ends of the second hinge portion 347 are hingedly coupled to one side portion of each of the plurality of supports 345. The other side portion of each of these supports 345 corresponds to the free end opposite to the hinge-operated portion, as shown in Figure 3, a plurality of hook-shaped support restraints formed on the side end of the first plate member 340 It is temporarily fixed and restrained by the apparatus 346, and released and used as shown in FIG.

In particular, after the support 345 is released, as the free end end rotates to be fitted into the fixing groove 348 of the upper deck 11, the first plate member 340 and the second hinge portion 347 and By supporting the second plate member 350, it plays a role of maintaining the inclined state of the second front structure 300 firmly and reinforcement.

Hereinafter, an operation method of the air resistance reduction device according to the second embodiment of the present invention will be described.

In the initial position as shown in Figure 3, the second front structure 300 corresponding to the air resistance reduction device is provided in the shape of the 'L' in the initial position, it can be used even in ship operating conditions that do not consider the air resistance In addition to being able to use it, it is possible to selectively use the present invention as needed and to respond appropriately to the operation of ships in special situations without considering air resistance problems.

In this second front structure 300, the movable device 310 is operated when any one of an electric, hydraulic, pneumatic operation source is applied to the movable device (310).

The movable device 310 transmits a torque force to the first hinge portion 330 through the gear device 320, and the first plate member 340 coupled to the first hinge portion 330 performs a hinge operation. .

That is, the first plate member 340 is in close contact with the front side 21 of the cargo hold structure 20, and is rotated in an inclined state through the hinge operation.

The second plate member 350, which is foldably coupled at the end of the rotating first plate member 340, is pushed along the upper surface of the upper deck 11 by the rolling roller 360, and eventually shown in FIG. As shown in the figure, while the end portion of the second hinge portion 347 is lifted, it maintains the overall inclined plane shape.

At this time, when the support restraint device 346 is operated (for example, an operation of releasing the hook of the support restraint device by either manual or automatic operation such as an operator), the support 345 is released. The free end end of the released support 345 is rotated and fitted into the fixing groove 348 of the upper deck upper portion 11.

The support 345 serves as a variable reinforcement material for supporting the first plate member 340, the second hinge portion 347, and the second plate member 350.

The second front structure 300 in this state of operation is inclined at the same time as covering the front side 21 of the cargo hold structure 20, the inclination angle of the wind blowing during the operation of the ship or the wind blowing in the natural state Corresponding to the top of the cargo hold structure 20 to be able to variably minimize the air resistance.

In addition, although not shown in the present invention, the front structure itself may be made of an air tube body. At this time, the front structure (not shown) having the air tube body is fixed and installed to be detachable between the upper corner of the front side 21 of the cargo hold structure 20 and the upper deck top 11 of the hull 10 and Of course, it can be manufactured in the form of inflating inclined surface according to the air injection.

Removable fixing and installation methods can be used wires, hooks and the like.

Here, the inclined surface of the air tube body formed by the air injection is also formed on the basis of the direction that can variably minimize the air resistance by rejecting the wind to the upper portion of the cargo hold structure 20 corresponding to the inclination angle.

The front structure with such an air tube body draws air out of the air tube body when not in use, thus making the installation space available for variable and other uses.

As described in detail above, the air resistance reduction device of the production storage ship of the present invention provides a fixed or variable front structure, thereby minimizing air resistance, thereby preventing a decrease in propulsion force corresponding to air resistance and air load, There is an advantage that can reduce the operating cost or fuel cost of the vessel.

In addition, the air resistance reduction device of the production storage ship of the present invention can be used even in the ship operating conditions that do not consider the air resistance by the variable second front structure, and can optionally use the present invention as needed In addition, there is an advantage that can be appropriately respond to the operation of the ship in a special situation that does not consider the problem of air resistance.

Claims (3)

In the air resistance reduction device of the production storage ship installed in the hull part of the cargo hold structure protruding above the upper deck, An apparatus for reducing air resistance of a production storage ship comprising a plate-shaped front structure extending from the upper corner of the front side of the cargo hold structure to an upper deck of the hull in a downward inclined direction. The method of claim 1, The front structure includes a movable device for generating a movable force generated by any one of the power source, hydraulic pressure, pneumatic source; A gear device coupled to receive the moving force from the movable device to generate an increased torque force; A shaft member having driven gears engaged with the output gears of the gear device, the first hinge portion fixing one portion at an upper corner of the front side of the cargo hold structure and allowing the other portion to be hinged; A first plate member having a planar shape or a curved shape fixed to the other side of which the hinge operation is possible at the first hinge part; A second plate member foldably coupled through a second hinge portion at an end of the first plate member; An apparatus for reducing air resistance of a production storage ship comprising a plurality of rolling rollers mounted on a free end of the second plate member to control a variable inclination. The method of claim 2, A plurality of supports hingedly coupled to both ends of the second hinge portion; It includes a hook-shaped support restraining device for temporarily fixing the support to the side end of the first plate member, The free end end of the support is characterized in that the air resistance reduction device of the production storage ship, characterized in that fitted into the fixing groove formed in the upper deck when released from the support restraining device.

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