CN216475162U

CN216475162U - Self-installation high-pile gravity type bearing platform offshore wind turbine complete machine

Info

Publication number: CN216475162U
Application number: CN202123166311.XU
Authority: CN
Inventors: 王翎羽; 任俊俊; 吴贺贺; 张梦琪
Original assignee: Neptune Offshore Engineering Development Co ltd
Current assignee: Neptune Offshore Engineering Development Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-10
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a self-mounting high pile gravity type bearing platform offshore wind turbine complete machine, which is built on a slipway by a wind turbine, a gravity type bearing platform and pile legs, is assembled integrally and is transported to a construction sea area by a barge; the gravity type bearing platform is a square steel box filled with concrete or sand, gravity is concentrated on the gravity type bearing platform, compared with a gravity type foundation, buoyancy loss is avoided, and stability and reliability of bearing platform ballasting are effectively improved; the wind turbine foundation can adopt different structural forms according to different seabed rock-soil foundations and applicable water depths, the pile leg end is designed without pulling force, the environment force is resisted mainly by gravity, the economy of the foundation is particularly obvious, and the situation that the traditional wind turbine foundation embedded underwater rock construction process is complex and high in cost is twisted; the implementation of this patent technique has saved fan installation marine construction time greatly, realizes installing certainly through elevating gear, need not the ground and handles, and is less to marine environment influence, and it is convenient to install, and construction cycle is short with low costs.

Description

Self-installation high-pile gravity type bearing platform offshore wind turbine complete machine

Technical Field

The utility model relates to an offshore wind power technical field, particularly, in particular to from installation high stake gravity type cushion cap offshore wind turbine complete machine.

Background

The foundation of the offshore wind turbine can be divided into a bottom fixing type foundation and a suspension type foundation according to the fixing mode of the foundation so as to adapt to different water depths. The bottom fixed foundation is usually applied to a shallow sea area with the water depth within 0-50 m, the structural form of the foundation is diversified due to different sea conditions, and the foundation mainly comprises various forms of foundations such as a gravity type foundation, a single pile foundation, a grouped pile foundation, a jacket foundation, a caisson, a suction tube and the like, and can be selected according to the environment, construction and technical conditions; the suspension foundation can be suitable for deeper sea areas within 50-200 m, but the research on the type of fan foundation in China is still in the research, development and test stage and has no practical application.

Because the traditional offshore wind turbine foundation is in a single pile or jacket form and limited by the wind turbine foundation form, the wind turbine foundation and the host cannot be integrally installed on land and then integrally transported to a target sea area, the traditional wind turbine foundation and the wind turbine can be installed on the sea and are greatly influenced by factors such as seabed conditions, waves, water flows, climate, hydrology, environment and the like, and the offshore wind turbine foundation installation has a series of problems of high requirements on technology and installation equipment, high installation difficulty, high construction cost, long construction period and the like.

SUMMERY OF THE UTILITY MODEL

In order to compensate for the deficiencies of the prior art, the utility model provides a from installation high stake gravity type cushion cap offshore wind turbine complete machine.

The utility model discloses a realize through following technical scheme:

a self-mounting high pile gravity type bearing platform offshore wind turbine complete machine comprises a bearing platform foundation and a wind turbine,

the bearing platform foundation consists of a gravity type bearing platform, pile legs and a lifting device, the gravity type bearing platform is a square steel box body filled with concrete or sand, the lifting device is installed at four end corners of the gravity type bearing platform, and the pile legs penetrating through the gravity type bearing platform are arranged in the lifting device; and the fan is connected with the foundation flange at the upper end part of the gravity type bearing platform through a tower cylinder flange at the bottom of the fan by bolts.

Preferably, the bottom of the pile leg can be selectively provided with a pile shoe, a sinking pad, a base plate and a suction cylinder.

Preferably, the mat is a steel square-shaped structural member.

Preferably, the base plate is of a truss type base plate structure, and the base plate is connected with the lower parts of the pile legs in a welding mode.

Preferably, the suction tube is a cylinder structure with a closed top and an open bottom, and the top of the suction tube is connected with the bottom of the pile leg in a welding manner.

Preferably, the suction tube is installed at the bottom of four end corners of the base plate through welding.

The utility model discloses owing to adopted above technical scheme, compare with prior art and make it have following beneficial effect:

1. the whole fan (comprising the fan, the gravity type bearing platform and the pile leg) can be built on the slipway, integrally assembled and transported to a construction sea area through a barge, so that the offshore construction time is greatly saved, self-installation is realized through the lifting device, foundation treatment is not needed, the influence on the marine environment is small, the installation is convenient, the construction period is short, and the cost is low;

2. the gravity is concentrated on the gravity type bearing platform, compared with a gravity type foundation, the buoyancy loss is avoided, and the stability and reliability of bearing platform ballasting are effectively improved;

3. this patent can take different foundation structure forms according to seabed ground basis and the difference that is suitable for the depth of water, and the spud leg end does not have the pulling force design, mainly relies on gravity to resist the environmental force, and is especially obvious to the economic nature of rock-based, has twisted around the complicated, with high costs situation of the fan foundation construction technology of traditional embedded rock under water.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of the offshore wind turbine complete machine of the present invention;

fig. 2 is a schematic structural view of the pile leg assembling pile shoe of the present invention;

fig. 3 is a schematic structural view of the pile leg assembly suction tube of the present invention;

fig. 4 is a schematic structural view of the pile leg assembling base plate of the present invention;

fig. 5 is a schematic structural view of the pile leg assembly sinking pad of the present invention;

fig. 6 is a schematic structural view of the pile leg assembly base plate suction tube of the present invention.

Wherein, the corresponding relation between the reference numbers and the parts in fig. 1-6 is:

1. a fan; 2. a lifting device; 3. a gravity bearing platform; 4. pile legs; 5. a pile shoe; 6. sinking a cushion; 7. a suction canister; 8. a basal disc.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A self-installed high pile gravity bearing platform offshore wind turbine complete machine according to an embodiment of the present invention will be specifically described with reference to fig. 1 to 6.

A self-installed high-pile gravity type bearing platform offshore wind turbine complete machine comprises a bearing platform foundation and a wind turbine 1, wherein the bearing platform foundation consists of a gravity type bearing platform 3, pile legs 4 and a lifting device 2, the gravity type bearing platform 3 is a steel square box body filled with concrete or sand, the lifting device 2 is installed at four end angles of the gravity type bearing platform 3, and the pile legs 4 penetrating through the gravity type bearing platform 3 are arranged in the lifting device 2; the fan 1 is connected with a base flange at the upper end part of the gravity type bearing platform 3 through a tower cylinder flange at the bottom of the fan 1 by bolts. The bottom of the pile leg 4 can be selectively provided with a pile shoe 5, a sinking pad 6, a base plate 8 and a suction cylinder 7, wherein the sinking pad 6 is a steel square-shaped structural member; the base plate 8 is of a truss type base plate structure, the base plate 8 is connected with the lower parts of the pile legs 4 in a welding mode, and meanwhile the bottoms of four end corners of the base plate 8 can be provided with the suction cylinders 7 in a welding mode; the suction tube 7 is a cylinder structure with a closed top and an open bottom, and the top of the suction tube 7 is connected with the bottom of the pile leg 4 in a welding way.

The principle is implemented to this patent:

the gravity type bearing platform 3 and the pile legs 4 are built on the slipway, and the bottom of the pile legs 4 are in different structural forms according to the difference of the seabed rock foundation and the applicable water depth: for the foundation with the water depth less than 30 m, the end parts of the pile legs 4 are directly installed; for soft foundation with water depth less than 30 m, pile shoes 5 or suction cylinders 7 can be installed at the bottoms of pile legs 4; for a foundation with the water depth of less than or equal to 30 meters and less than or equal to 50 meters, a base plate 8 is installed at the lower part of the pile leg 4; for a soft foundation with the water depth of 30 meters less than or equal to 50 meters, a sinking pad 6 can be installed at the bottom of a pile leg 4 or a base plate 8 with a suction cylinder 7 at the bottom is installed at the lower part of the pile leg 4, and the fan 1 is installed on a gravity type bearing platform 3 to complete integral assembly of the fan;

installing a lifting device 2 on the pile leg 4, lifting the gravity type bearing platform 3 to a certain height by starting the lifting device 2 so as to enable a transportation barge to enter from the lower part of the gravity type bearing platform 3, lowering the gravity type bearing platform 3 to a barge deck, withdrawing the pile leg 4, placing an air bag at the bottom of the barge, launching the air bag, and dragging the air bag to a construction sea area by a tugboat;

after the construction sea area is reached, water surface positioning and anchoring are carried out, the pile leg 4 is lowered by starting the lifting device 2, the pile leg 4 (or a pile shoe, a sinking pad and a suction cylinder) is lowered continuously after reaching a rock foundation (or a soft foundation), at the moment, the gravity type bearing platform 3 is jacked and leaves a deck of the barge, the gravity type bearing platform 3 is jacked continuously until the gravity type bearing platform 3 reaches a specified elevation, the levelness of the gravity type bearing platform 3 is adjusted, and the barge is lifted and evacuated;

and (3) performing cement consolidation on the circumferential clearance between the pile leg 4 and the gravity type bearing platform 3, prepressing the top of the pile leg 4 through a prepressing tank filled with water or sand until the maximum pressure of the pile leg under the extreme working condition, removing the prepressing tank after the foundation settlement is stable, and completing the installation of the whole fan.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a from installation high stake gravity type cushion cap offshore wind turbine complete machine which characterized in that: comprises a bearing platform foundation and a fan (1),

the bearing platform foundation consists of a gravity type bearing platform (3), pile legs (4) and a lifting device (2), the gravity type bearing platform (3) is a square steel box body filled with concrete or sand, the lifting device (2) is installed at four end corners of the gravity type bearing platform (3), and the pile legs (4) penetrating through the gravity type bearing platform (3) are arranged in the lifting device (2); the fan (1) is in bolted connection with a base flange at the upper end of the gravity type bearing platform (3) through a tower cylinder flange at the bottom of the fan (1).

2. The self-installing high pile gravity type bearing platform offshore wind turbine complete machine as claimed in claim 1, wherein: the bottom of the pile leg (4) can be selectively provided with a pile shoe (5), a sinking pad (6), a base plate (8) and a suction cylinder (7).

3. The self-installing high pile gravity type bearing platform offshore wind turbine complete machine as claimed in claim 2, wherein: the sinking pad (6) is a steel return-shaped structural part.

4. The self-installing high pile gravity type bearing platform offshore wind turbine complete machine as claimed in claim 2, wherein: the base plate (8) is of a truss type base plate structure, and the base plate (8) is connected with the lower portions of the pile legs (4) in a welding mode.

5. The self-installing high pile gravity type bearing platform offshore wind turbine complete machine as claimed in claim 2, wherein: the suction tube (7) is of a cylindrical structure with a closed top and an open bottom, and the top of the suction tube (7) is connected with the bottom of the pile leg (4) in a welding mode.

6. The self-installing high pile gravity type bearing platform offshore wind turbine complete machine as claimed in claim 2 or 4, wherein: the bottom of four end corners of the base plate (8) can be provided with the suction cylinder (7) through welding.