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KR-102957066-B1 - A Horizontal Leveling Device for a Substructure of a Jack-up Type Offshore Wind Turbine Structure

KR102957066B1KR 102957066 B1KR102957066 B1KR 102957066B1KR-102957066-B1

Abstract

The present invention relates to a horizontal adjustment device for the substructure of a jack-up type offshore wind power structure that addresses the problem of the pontoon body tilting due to leg subsidence caused by the influence of the ground as time elapses after the installation of the offshore platform is completed by supporting the legs on the seabed using a mobile jacking device, and allows for more convenient horizontal adjustment of the pontoon body in place of the jacking device.

Inventors

  • 김현국
  • 박찬일
  • 고병근
  • 허정호
  • 김성수

Assignees

  • 주식회사 콤스

Dates

Publication Date
20260507
Application Date
20251030

Claims (6)

  1. A horizontal adjustment device for the substructure of a jack-up type offshore wind power structure, comprising a main body (1) configured as a floating structure on water and having a plurality of leg support members (13) that are perforated in the vertical direction at intervals set on the edge side and a compartment-shaped driving space (131) in contact with said leg support members (13), and a plurality of legs (2) that are inserted into said leg support members (13) and are capable of sliding in the vertical direction, with pinholes (21) formed in the vertical direction at intervals set on the leg support members (13), wherein a jacking means (3) for lowering or raising said legs (2) is detachable. A cylinder block (4) positioned in a driving space (131) to be in contact with the above leg support (13), and having a through hole (43) in the front-rear direction corresponding to the position of the above pinhole (21) and a side support (46) having a horizontal plane (461) facing upward on both sides; A pin block (6) that is inserted into the through hole (43) and moves back and forth, with the front end inserted into the pin hole (21) and the rear end having a fastening part (63) formed therein; A first actuator (7) connected to the above-mentioned connecting part (63) to move the pin block (6) back and forth; A second actuator (8) positioned between the upper side of the horizontal plane (461) and the ceiling surface of the driving space (131) to allow for length adjustment; and A spacer block (5) inserted between the upper part of the cylinder block (4) and the ceiling surface of the driving space (131); comprising, The above spacer block (5) comprises a base plate (51) fixed to the upper surface of the cylinder block (4) with a first vertical support shaft (511) formed on one side, and one or more support plates (52) formed with a set thickness and having a coupling hole (521) formed on one side into which the first support shaft (511) is inserted, wherein the coupling hole (521) of the support plate (52) is in the shape of a ring and has a cut portion (522) corresponding to the outer diameter of the first support shaft (511) formed so that insertion and separation are possible by rotating after fitting the coupling hole (521) into the first support shaft (511), and a second support shaft (523) of the same shape as the first support shaft (511) is formed on the other side of the support plate (52) and is inserted into the coupling hole of a three-layer support plate that is stacked on the upper side and forms a left-right symmetrical structure with the support plate (52). Leveling device.
  2. In paragraph 1, The above spacer block (5) is, A horizontal adjustment device for a substructure of a jack-up type offshore wind power structure, characterized by comprising a base plate (51) having a first vertical support shaft (511) formed on one side, and one or more support plates (52) formed with a set thickness and having a coupling hole (521) into which the first support shaft (511) is inserted on one side.
  3. In paragraph 1, A horizontal adjustment device for the substructure of a jack-up type offshore wind power structure, characterized in that the above leg (2) is in the shape of a cylinder and has pinholes (21) formed in three rows in the vertical direction at intervals of 120 degrees based on the horizontal cross-section, and the above cylinder block (4) is provided in a set of three so as to face the leg (2) from three directions corresponding to the position of the pinhole (21).
  4. In paragraph 1, The above cylinder block (4) is characterized by having a rectangular box-shaped outer frame (41), a tubular inner frame (42) formed with a rear cylinder section (431) having a first diameter in the rear section and a front cylinder section (432) having a second diameter smaller than the first diameter in the front section that penetrates in the front-rear direction, a vertical support body (44) that supports the inner frame (42) vertically, and a horizontal support body (45) that supports the inner frame (42) horizontally.
  5. In paragraph 4, A horizontal adjustment device for a substructure of a jack-up type offshore wind power structure, characterized in that the pin block (6) is composed of a rear block (61) having an outer diameter corresponding to the first diameter on the rear side and a front block (62) having an outer diameter corresponding to the second diameter on the front side.
  6. In paragraph 5, A horizontal adjustment device for the lower structure of a jack-up type offshore wind power structure, characterized in that a horizontal surface (611) is formed horizontally in the upper and lower directions on the rear block (61), and a vertical surface (621) is formed vertically in the left and right directions on the front block (62).

Description

A Horizontal Leveling Device for a Substructure of a Jack-up Type Offshore Wind Turbine Structure The present invention relates to a jack-up type offshore wind power structure, and more specifically, to a substructure leveling device for a jack-up type offshore wind power structure that addresses the problem of the pontoon body tilting due to leg subsidence caused by the influence of the ground as time passes after the installation of the offshore platform is completed by supporting the legs on the seabed using a mobile jacking device, and allows for easier leveling of the pontoon body in place of the jacking device. Recently, with the extensive research and development on eco-friendly renewable energy, wind power generation, which produces electricity using large blades that rotate through the wind, is gaining attention. To produce a sufficient amount of electricity, a number of wind turbines equipped with large blades must be installed at a certain distance from each other. In particular, as the noise generated during the high-speed rotation of large blades and the noise from the operation of the generators become sources of complaints from neighbors, wind power complexes must be established in areas away from urban centers. Although offshore wind power structures can meet these requirements, methods such as pouring concrete to create supports for the upper tower or piling—which involves excavating the bedrock layer of the seabed and driving piles—have been used to ensure robust fixation, as external forces like wind, waves, and tides act constantly. This method not only caused difficulties in installing large turbines on deep seabeds and adversely affected the ground structure, but also resulted in low economic feasibility due to excessive installation costs. The applicant has presented a separable offshore plant jacking system capable of minimizing interference caused by a separated leg of the jacking device after the construction of an offshore platform through Korean Registered Patent No. 10-2792827 (April 3, 2025). As time passes after the installation of an offshore plant, leg subsidence may occur due to the influence of the ground, potentially causing the plant body to tilt. To correct this, height adjustment must be performed by re-attaching jacking devices to the legs; however, this process requires significant time and cost due to the re-attachment, operation, and removal of the jacking system. FIG. 1 is a partial perspective view showing the installation of a horizontal adjustment device according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view showing the installation of a horizontal adjustment device according to an embodiment of the present invention, FIGS. 3 and 4 are perspective views showing the external appearance and structure of a horizontal adjustment device according to an embodiment of the present invention. FIG. 5 is a pin block structure diagram according to an embodiment of the present invention, FIG. 6 is a partial cutaway view of the interior of a driving space according to an embodiment of the present invention, FIG. 7 is a structural diagram of a spacer block according to an embodiment of the present invention. Hereinafter, the horizontal adjustment device for the substructure of the jack-up type offshore wind power structure of the present invention will be described in detail with reference to the attached drawings. FIG. 1 is a partial perspective view showing the installation of a horizontal adjustment device according to an embodiment of the present invention. The present invention is a horizontal adjustment device applied to a jacking type offshore wind power generation platform, comprising a pontoon structure capable of floating on water, a main body (1) having a plurality of leg support members (13) that are penetrated in the vertical direction at intervals set on the edge side and a compartment-shaped driving space (131) that contacts the leg support members (13), a plurality of legs (2) that are inserted into the leg support members (13) and are capable of sliding in the vertical direction, with pinholes (21) formed in the vertical direction at intervals set on the edge side, and a jacking means (3) for lowering or raising the legs (2). The above main body (1) is a flat structure in which a tower and a wind power turbine (11) are installed on the upper central side, and is configured to be movable while floating on the sea. It is configured so that the tower (12) and the wind power turbine (11) can be moved to the sea after being pre-assembled and commissioned on the main body on land, thereby eliminating the need for a large offshore crane for the offshore assembly of the platform and a fleet for its operation, as in the past. In addition, the main body (1) may have an appropriate surface area to maintain buoyancy and prevent overturning by wind or waves even when a tower (12) and a wind power turbine (11) are installed on the upp