KR20170024256A - Arctic offshore structure and equipment for removing accumulated ice - Google Patents

Abstract

The present invention can easily and simply remove the ocean structure without moving the hull when removing sea ice from the sea surface for the operation of the polar ocean structure installed in polar waters, And more particularly, to a laminated ice removing apparatus for an offshore structure that can be automatically removed when stacked at a predetermined height.
According to the present invention, there is provided an apparatus for supporting an oceangoil structure in which ice is formed, a wave vortex generating means provided in the support means for generating a wave vortex in the lower portion of the polar ocean structure, There is provided a device for removing stacked ice of an polar ocean structure.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for removing stacked ice in an offshore structure, and an offshore structure having the same.

The present invention relates to an apparatus and method for removing ice from a sea surface of an ocean structure, and more particularly, to an apparatus for removing ice from a sea surface of an oceangoing structure, And more particularly, to a laminated ice removing apparatus for an offshore structure that can be easily and simply removed without moving, and particularly capable of preventing structural damage by removing it without direct striking, and automatically removing it when stacked at a certain height.

Along with the development of submarine mining technologies, various marine structures suitable for development of marginal field or deep sea oil field have been developed.

Such marine structures include various forms such as floating marine equipment, semi-submersible marine equipment, stationary marine equipment, lifting marine equipment, drilling rigs and the like.

In recent years, development of oil fields and gas development has been actively conducted in the ice regions of the Arctic Ocean, and research on offshore structures suitable for the climate conditions of the ice regions has been actively conducted.

Among the offshore structures installed in such ice regions, the fixed offshore structure may be supported or fixed by legs fixing various platforms (hereinafter, simply referred to as "hulls") to the seabed ground, As shown in Fig.

In such a fixed offshore structure, a stationary offshore structure installed in an ice region progresses to periodically or optionally crushing ice when ice occurs on the sea surface below the offshore structure, as shown in FIG. 1 is an exemplary view showing a state where ice is stacked on an polar ocean structure.

In the case where ice is stacked on an offshore structure, it is structurally damaged on the offshore structure, so it is necessary to remove the accumulated ice on the operation of the offshore structure. In the past, only ice management for minimizing the ice- .

As an active alternative, there has been proposed a method of crushing ice by jacking down legs through a jack-up rig to lower the hull itself.

However, such a conventional method is disadvantageous in that it requires a great deal of power because it moves the whole of the offshore structure and causes discomfort to the crew residing in the hull. In particular, conventionally, There is a problem in that it is necessary to precede the troublesome and complicated work according to the work for lowering the structure itself, for example, to perform stable fixing work on the structure on the structure, for example).

Also, conventionally, since the offshore structure itself is lowered as described above to remove the stacked ice, or the separate crushing means is moved and removed to directly collide with the stacked ice, thereby causing damage to the offshore structure or crushing means, There was also a problem of losing.

(Document 1) Korean Utility Model Publication No. 20-2015-0001126 (Feb. (Document 2) Korean Patent Publication No. 10-2015-0026408 (Feb.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of removing ice from a sea surface of an offshore structure, And to provide a device for removing laminated ice of an offshore structure capable of preventing structural damage to an offshore structure or a removal device.

It is another object of the present invention to provide an apparatus for removing stacked ice of an ocean structure, which can be automatically removed when ice is stacked at a predetermined height around a water surface of an offshore structure.

According to an aspect of the present invention, there is provided an apparatus for supporting a polarized oceans in which ice is formed, a wave vortex generating means provided in the support means for generating a wave vortex in a lower portion of an polarized offshore structure, There is provided an apparatus for removing stacked ice of an offshore structure,

In the present invention, the wave vortex generating means includes a rotary / translational drive body configured to rotate about the support means at the lower portion on the ice formation side and to translate along the support means, and a rotary / And a rotating blade member provided in the driving body to generate a wave vortex at the bottom of the ice.

In the present invention, the rotating blade member is formed in a rectangular shape in cross section, and the upper side is shorter than the lower side.

In the present invention, the driving means may include a rotation driving unit for rotationally driving the rotary / translational driving body, a translational driving unit for translationally driving the rotary / translational driving body, And a control unit for controlling the display unit.

In the present invention, the laminated ice removing apparatus of the polar ocean structure may further include an automatic control unit for automatically controlling the wave vortex generating means.

In the present invention, the automatic control unit may include a sensor for sensing a height of ice accumulated in the support unit, and a control unit for controlling the rotation unit and the translational motion drive unit by a signal of the sensor for a preset time And the like.

The polarized ocean structure according to another aspect of the present invention is characterized by including the above-described apparatus for laminating polar ocean structures.

According to the present invention, it is possible to remove ice from the sea surface in the operation of polar oceanic structures installed in the polar waters, and it is easy and simple to move the marine structures without hull movement. There is an effect that can be removed.

In addition, according to the present invention, it is possible to prevent structural damage of the offshore structure or the removal device by removing the stacked ice without directly blowing it, thereby extending the service life of the structure and reducing the maintenance cost.

In addition, according to the present invention, when ice is stacked at a certain height, it can be automatically removed, thereby improving the operational efficiency.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is an exemplary view showing a state where ice is stacked on an polar ocean structure.
FIG. 2 is a view showing the construction and one operation state of the laminated ice apparatus of the polar ocean structure according to the present invention.
FIG. 3 is a view showing a state of the operation of the laminated ice apparatus of the polar ocean water structure according to the present invention, which is different from that of the laminated ice apparatus.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

The apparatus for removing laminated ice of an offshore structure according to the present invention described below can be applied to an offshore structure, particularly, an offshore structure fixed on a seabed ground through support legs and the like.

The present invention can easily and easily remove the ice structure of an offshore structure without the hull movement when the ice of the sea surface needs to be removed due to the operation of the polarized offshore structure installed in polar waters, It is possible to prevent structural damage to offshore structures or removal devices by eliminating direct impact on the ice, thereby extending the life of the structure and reducing maintenance costs, and automatically removing ice when it is stacked at a certain height Thereby improving the operational efficiency.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a laminated ice removing apparatus for polar ice structure according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

An apparatus for removing laminated ice of an polar ocean structure according to the present invention will be described with reference to Figs. 2 and 3. Fig. FIG. 2 is a view showing a construction and an operation state of the laminated ice apparatus of the polar ocean water structure according to the present invention. FIG. 3 is a view showing the state of the operation of the laminated ice apparatus of the polar ocean water structure, Fig.

As shown in FIGS. 2 and 3, the apparatus for removing laminated ice according to the present invention comprises a supporting means 100 for an oceangoing polar sea structure, a support means 100 for supporting the polar ocean, A wave vortex generating means 200 configured to generate a wave vortex at the lower part of the water surface of the structure, and driving means for driving the wave vortex generating means 200.

The support means 100 may be in the form of a support structure itself or may be in the form of a leg structure supporting an ocean structure provided with the platform, but is not limited thereto.

The wave vortex generating means 200 is configured to rotate and translate along the support means 100 at the lower part of the water line where the ice is stacked and to be able to translate along the support means 100, And a rotating blade member 220 provided in the rotating body 210 and the rotating / translating driving body 210 to generate a ripple vortex at the bottom of ice to crush the stacked ice.

The rotary / translational driving body 210 is constituted by a rotating body rotatable via a bearing, and is installed in the supporting means 100 so as to be rotated and translated by a driving means described later.

The rotary blade member 220 is coupled at one end to the rotary / translational driving body 210, and the other end is formed at a free end, and is formed asymmetric to maximize the ripple vortex. That is, the rotating blade member 220 is formed in a rectangular shape in cross section, and the upper side is formed to be shorter than the lower side.

Next, the driving means includes a rotational driving unit for rotationally driving the rotary / translational driving body 210, a translational driving unit for translationally driving the rotary / translational driving body 210, And a control unit for controlling the translational motion drive unit.

The rotation driving unit may include a driving motor, and a bevel gear train connected to the driving motor and configured to rotate the rotary / translational driving body 210. Components for transmitting the rotational driving force include But is not limited thereto.

The translational motion drive unit may include a mooring device installed in the offshore structure and connected to the rotary / translational drive body 210 to move the rotary / translational drive body 210 up and down . Further, the translational motion drive unit may be configured to include a drive motor and a rack & pinion structure.

Meanwhile, the apparatus for removing laminated ice of the polar ocean structure according to the present invention further includes an automatic control unit for automatically controlling the wave vortex generating means 200.

The automatic control unit includes a sensor 310 for detecting the height of ice accumulated in the supporting unit 100. The automatic control unit may receive a signal from the sensor 310 to perform a translational motion And to control the drive unit for a predetermined time.

According to the present invention, the laminated ice removing apparatus of the polarized offshore structure does not directly crush the stacked ice but generates a wave vortex (vortex) in the lower part of the ice to crush the ice.

The above-described apparatus for removing laminated ice according to the present invention can easily and easily remove the ice structure of an offshore structure without removing hulls when the ice of the sea surface is to be removed due to the operation of the polarized offshore structure installed in the polar waters. And it is possible to prevent the structural damage of the offshore structure or the removal device by eliminating the direct striking against the stacked ice, thereby prolonging the life of the structure and reducing the maintenance cost, and when the ice is stacked at a certain height, There is an advantage that the operation efficiency can be increased.

Although the present invention has been described with reference to the drawings, it is to be understood that the invention is not limited to the embodiments and drawings described above, It will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

100: Support means
200: wave vortex generating means
210: Rotary / translational drive actuator
220: rotating blade member
310: Sensor

Claims (7)

Supporting means for supporting polar oceanic structures;
A wave vortex generating means provided in the supporting means and configured to generate a wave vortex below the water surface; And
And driving means for driving the wave vortex generating means,
Stacked ice removal system for polar ocean structures. The method according to claim 1,
The wave vortex generating means comprises:
A rotary / translational driving body configured to rotate about the support means and to translate along the support means; And
And a rotating blade member provided in the rotating / translating driving body to generate a wave vortex below the water surface.
Stacked ice removal system for polar ocean structures. The method of claim 2,
Wherein the rotary blade member has a rectangular shape when viewed in cross section and has a top side shorter than a bottom side,
Stacked ice removal system for polar ocean structures. The method according to claim 1,
The driving means includes:
A rotation driving unit for rotationally driving the rotary / translational driving body;
A translational motion driving unit for translationally driving the rotary / translational driving body; And
And a controller for controlling the rotary drive unit and the translational motion drive unit,
Stacked ice removal system for polar ocean structures. The method according to any one of claims 1 to 4,
Further comprising an automatic control unit for automatically controlling the wave vortex generating means,
Stacked ice removal system for polar ocean structures. The method of claim 6,
The automatic control unit includes:
A sensor for sensing a height of ice accumulated in the support means; And
And an automatic control unit configured to receive the signal of the sensor and to control the rotary motion unit and the translational motion drive unit for a preset time,
Stacked ice removal system for polar ocean structures. The ice making machine according to any one of claims 1 to 4,
Polar Offshore Structures.

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