CN213328975U

CN213328975U - Semi-submersible pile inserting type ocean hoisting construction platform

Info

Publication number: CN213328975U
Application number: CN202022119121.1U
Authority: CN
Inventors: 刘伊伊; 陈晶华
Original assignee: Fengchao Ocean Engineering Shenzhen Co ltd
Current assignee: Fengchao Ocean Engineering Shenzhen Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-01
Anticipated expiration: 2030-09-24

Abstract

The utility model relates to a semi-submerged pile inserting type ocean jack-up construction platform, including last hull, lower hull and the connection box of connecting hull and lower hull, go up hull and lower hull and adopt the design of semi-submerged hull, go up hull and lower hull and insert the seabed through 4 pile legs, upward be provided with heavy hoisting apparatus and elevating system on the hull, the pile leg passes through elevating system and inserts the seabed, heavy hoisting apparatus sets up on the position of the afterbody off-center of last hull. The influence of ocean surface wave current on the ocean hoisting platform is greatly reduced by adopting the semi-submersible type upper and lower ship bodies, the pile leg type pile inserting system is inserted into the seabed by 4 pile legs to a certain depth, the hoisting platform does not need to be lifted off the water surface, the effects of resisting horizontal and vertical loads generated by residual ocean surface wave current and horizontal loads generated by sea wind are enhanced, and the stability of the platform is maintained.

Description

Semi-submersible pile inserting type ocean hoisting construction platform

Technical Field

The utility model relates to an ocean jack-up technical field especially relates to a semi-submerged pile inserting formula ocean jack-up construction platform.

Background

At present, offshore wind farms in China enter a large-scale development stage from 2018, and the annual construction scale reaches 400 ten thousand kilowatts (kilowatt) of 300-. The large-diameter single-pile sinking and fan equipment hoisting of offshore wind power plants at home and abroad is influenced by sea wind and ocean surface wave current, and the self-elevating hoisting platform which needs to be adopted needs to be lifted away from the water surface, so that the influence of ocean surface wave and current is avoided, and the construction operation can be completed.

When the self-elevating hoisting platform is adopted to carry out offshore wind power engineering construction, the serious risk and the potential safety hazard exist: 1. the pile legs need to stand on the seabed through large-area pile shoes, the marine seabed geology is complex and multi-faceted, foreign matters such as sunken ships and waste anchors exist in part of sea areas, the pile shoes are easy to damage, and the accident that the platform topples due to the fact that the platform is easy to puncture risks after the self-elevating platform with eggshell geology stands exists in part of the sea areas. 2. After the self-elevating platform is lifted off the water surface, the berthing construction operation of a transport ship can not be carried out, the berthing construction operation is provided for the transport ship by adopting a large positioning ship as a floating wharf, the large positioning anchor is easy to cause the accident that the large positioning ship and the transport ship impact the self-elevating platform, and the hull of the self-elevating platform or a pile leg repairing pile is damaged to reverse the self-elevating platform. 3. The surface layer of the sea bottom of the sea areas such as Zhejiang and Guangdong in south China has a large amount of soft soil geology such as silt and clay, the depth of the pile shoe inserted into the sea bottom after the self-elevating hoisting platform stands can reach 20-35 meters greatly, and great difficulty and risk are brought to pile shoe pulling when the platform leaves.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that exists among the prior art, the utility model provides a semi-submerged pile inserting type ocean hoisting construction platform.

A semi-submersible pile-inserting type ocean hoisting construction platform comprises an upper ship body, a lower ship body and a connecting box body for connecting the upper ship body and the lower ship body, wherein the upper ship body and the lower ship body are designed to be semi-submersible ship bodies, the upper ship body and the lower ship body are inserted into a sea bottom through 4 pile legs, a heavy hoisting device and a lifting mechanism are arranged on the upper ship body, the pile legs are inserted into the sea bottom through the lifting mechanism, and the heavy hoisting device is arranged on the position of the tail part of the upper ship body, which is eccentric.

Further, in the semi-submersible pile inserting type ocean hoisting construction platform, a control device is further arranged on the construction platform and used for controlling the heavy hoisting device and the lifting device to work.

Further, in above-mentioned semi-submerged pile inserting type ocean jack-up construction platform, elevating system includes leading truck, mount, link and sets up in the elevating gear who sets up in the mount inside, mount and last hull fixed connection, the leading truck is arranged in the mount top, be provided with the link between mount and the leading truck and be used for fixed position.

Furthermore, in the semi-submersible pile inserting type ocean hoisting construction platform, a limiting hole is formed between the guide frame and the fixing frame, an anti-collision block is arranged on the guide frame, and the size of the limiting hole is consistent with that of the pile leg.

Further, in the semi-submersible pile inserting type ocean hoisting construction platform, the heavy hoisting device comprises a crane, the crane is arranged at a position in the middle of the tail of the upper ship body, and an intelligent rapid load regulating system and a control room are arranged on the crane.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an adopt half submerged formula hull from top to bottom greatly reduced the influence of ocean surface layer unrestrained flow to ocean jack-up platform, and combined leg formula operating system to insert the seabed certain degree of depth through 4 spuds, need not lift jack-up platform off the surface of water, resist the level that ocean surface layer unrestrained flow produced, vertical load and the horizontal load that sea wind produced, this kind of novel half submerged pile inserting formula ocean jack-up construction platform can realize the high accuracy location and the steady jack-up safe construction operation under certain sea condition under the condition that need not lift the hull off the surface of water;

2. the utility model adopts the design of a semi-submersible ship body, the gap between an upper ship body and a lower ship body is about 10 meters, the passing of waves with the height of 5-6 meters can be met, the upper ship body and the lower ship body are connected by adopting a small-section box body with the width of about 4 meters, the buoyancy of about 850 tons can be increased under the long-period wave sea condition that the wave is about 3 meters in wave height and the wavelength is more than 100 meters, and compared with a construction hoisting platform with the self weight of about 1.5-2 ten thousand tons, the load is extremely small, and the generated shaking amplitude can be well controlled;

3. the lower hull of the utility model is of a box structure, has the length of about 100, the width of about 40 meters and the height of about 6 meters, can provide 2.4 ten thousand tons of buoyancy, and is enough to support the dead weight of the whole platform, the lifting weight of 2000 plus 4000 tons and part of variable load;

4. the heavy crane of the utility model adopts the tail part arranged in the inclined center, the hoisting center is only about 10 meters away from the stern side and the side of the platform, the maximum weight can be hoisted in the range of 18-40 meters outside the ship on the side surface and the tail part of the platform, and the largest hoisting operation range is provided on the side surface and the tail part of the platform under the condition of meeting the maximum hoisting weight;

5. the utility model is provided with an intelligent and rapid load regulation system, and can regulate the ballast water with large flow according to the deck load of the upper hull, the load of the crane, the amplitude and the rotation angle, and always keep the platform in a horizontal state;

6. the utility model adopts the design of 4 pile legs pile inserting system without pile shoe, the length of the pile leg is 125 meters, the pile leg can be inserted into the seabed for about 20-30 meters under the condition of water depth of 50-70 meters, and the whole pile inserting system can provide horizontal resistance of about 600 plus materials 800 and vertical resistance of 2000 tons;

7. the utility model discloses a hull about semi-submerged formula, the design of hull about the connection of small-section box has greatly reduced the influence of long period surge wave load, the hull provides super large buoyancy under the large scale, 4 big length spud legs do not have pile shoe pile inserting system and provide large-tonnage level and vertical resistance, the design of intelligence quick load regulation system etc, guarantee that jack-up construction platform is not had any rocking in the sea level position of semi-submerged under remaining surge and sea wind loading effect, can carry out pile construction and fan hoist and mount construction operation.

Drawings

FIG. 1 is a side view of a semi-submersible type pile-inserting lifting platform of the present invention;

FIG. 2 is a top view of the semi-submersible type pile-inserting hoisting platform of the present invention;

fig. 3 is a schematic structural diagram of the lifting mechanism of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 and 2, a semi-submersible pile-inserting type ocean hoisting construction platform comprises an upper hull, a lower hull and a connecting box body for connecting the upper hull and the lower hull, wherein the box body is arranged in a cylindrical shape, the upper hull and the lower hull are designed by adopting a semi-submersible hull, the semi-submersible hull is designed, the gap between the upper hull and the lower hull is about 10 meters, the passing of waves and surges with the height of 5-6 meters can be met, the upper hull and the lower hull are connected by adopting a small-section box body with the diameter of about 4 meters, the buoyancy of about 850 tons can be increased under the condition of the surge with the wavelength of 100 meters and about 3 meters in the construction period, the load is extremely small, and the generated shaking amplitude is extremely small compared with the whole construction platform with the self weight of about 1.5-2 ten thousand tons; the lower ship body has larger scale relative to the upper ship body, the length is more than 100, the width is about 40 meters, the height is about 6 meters, 2.4 ten thousand tons of buoyancy can be provided, and the buoyancy is enough to support the dead weight of the whole platform, the lifting weight of 2000-4000 tons and a part of variable load; the upper ship body and the lower ship body are inserted into the sea bottom through 4 pile legs, a heavy-duty hoisting device and a lifting mechanism are arranged on the upper ship body, the pile legs are hung and matched through the heavy-duty hoisting device and are inserted into the sea bottom through the lifting mechanism, and the heavy-duty hoisting device is arranged on the position of the tail part of the upper ship body, which is eccentric. The heavy crane is arranged in a tail part deviation way, the hoisting center is only 10 meters away from the stern side and the side of the platform, the maximum weight can be hoisted in the range of 18-40 meters outside the ship on the side surface and the tail part of the platform, and the largest hoisting operation range can be provided on the side surface and the tail part of the platform under the condition of meeting the maximum hoisting weight.

The influence of ocean surface wave current on the ocean hoisting platform is greatly reduced by adopting the semi-submersible type upper and lower ship bodies, and the pile leg type pile inserting system is combined to be inserted into the seabed by 4 pile legs to a certain depth without lifting the hoisting platform from the water surface so as to resist the horizontal and vertical loads generated by the ocean surface wave current and the horizontal load generated by sea wind;

the design of a 4-leg pile-shoe-free pile inserting system is adopted, the length of each leg is 125 meters, the requirement that the leg is inserted into the seabed for about 30 meters under the condition of water depth of 50-70 meters can be met, and the horizontal resistance of about 600-800 and the vertical resistance of 2000 tons can be integrally provided.

Further, as shown in fig. 3, in the semi-submersible pile inserting type ocean hoisting construction platform, the lifting mechanism comprises a guide frame, a fixing frame and a connecting frame, the fixing frame is fixedly connected with the upper hull, the guide frame is arranged above the fixing frame, and the connecting frame is arranged between the fixing frame and the guide frame and used for fixing the position.

Further, in the semi-submersible pile inserting type ocean hoisting construction platform, the heavy hoisting device comprises a crane, the crane is arranged at a position in the middle of the tail of the upper ship body, and an intelligent rapid load regulating system and a control room are arranged on the crane. The control room controls the motion of the intelligent rapid load regulating system, so that the crane can regulate the load of the ballast water in a large flow intelligently according to the load of the deck of the upper ship body, the load, the amplitude and the rotation angle of the crane, and the platform is always kept in a horizontal state.

The utility model discloses a hull about the semi-submerged formula, the design of hull about the connection of small-section box has greatly reduced the influence that the large wavelength was shoved and was carried outward, the hull provides super large buoyancy under the large scale, 4 big length spud legs do not have pile shoe pile inserting system and provide the design of large-tonnage level and vertical resistance, intelligent quick accent year system etc. guarantee jack-up construction platform and do not have any rocking in sea level position under remaining surge and sea wind loading effect, can carry out pile construction and fan hoist and mount construction operation.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a pile formula ocean jack-up construction platform is inserted to semi-submerged which characterized in that: the semi-submersible type ship comprises an upper ship body (1), a lower ship body (2) and a connecting box body (3) for connecting the upper ship body and the lower ship body, wherein the upper ship body and the lower ship body are designed to be semi-submersible type ship bodies, the upper ship body and the lower ship body are inserted into a seabed through 4 pile legs (4), a heavy hoisting device (5) and a lifting mechanism (6) are arranged on the upper ship body, the pile legs are inserted into the seabed through the lifting mechanism, and the heavy hoisting device is arranged on the position of the tail part of the upper ship body, which is eccentric.

2. The semi-submersible pile-inserting type marine hoisting construction platform according to claim 1, characterized in that: the construction platform is further provided with a control device, and the control device is used for controlling the heavy-duty hoisting device and the lifting device to work.

3. The semi-submersible pile-inserting type marine hoisting construction platform according to claim 1, characterized in that: elevating system includes leading truck (62), mount (61), link (63), mount and last hull fixed connection, the mount top is arranged in to the leading truck, be provided with the link between mount and the leading truck and be used for fixed position.

4. The semi-submersible pile inserting type marine hoisting construction platform according to claim 3, characterized in that: a limiting hole is formed between the guide frame and the fixing frame, an anti-collision block (64) is arranged on the guide frame, and the size of the limiting hole is consistent with that of the pile leg.

5. The semi-submersible pile-inserting type marine hoisting construction platform according to claim 1, characterized in that: the heavy-duty hoisting device comprises a crane, and an intelligent rapid load regulation system and a control room are arranged on the crane.