CN109441735B

CN109441735B - Marine multifunctional construction ship

Info

Publication number: CN109441735B
Application number: CN201811592644.9A
Authority: CN
Inventors: 白文奇
Original assignee: China Nuclear Industry Zhongyuan Construction Co ltd
Current assignee: China Nuclear Industry Zhongyuan Construction Co ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2024-03-29
Anticipated expiration: 2038-12-20
Also published as: CN109441735A

Abstract

The invention discloses a marine multifunctional construction ship, which comprises: a main hull and a transport support; the main ship body is formed by connecting two barge ship bodies through a double-ship fixing structure with adjustable ship body distance; the transportation bracket comprises a main tower frame with adjustable height, an upper cross beam which can be opened and closed left and right, and a lower bracket with adjustable inner diameter size; the main tower is used for supporting an upper cross beam, and the upper cross beam is used for fixing the upper part of the tower barrel; the lower support is used for fixing the lower part of the tower. The height of the main tower can be adjusted in real time according to the height of a specific tower barrel; the length of the upper cross beam can be adjusted in real time; the inner diameter size of the lower bracket is adjustable, so that the lower bracket is suitable for offshore installation of different types of fan foundation fans; reducing temporary infrastructure at the wharf in the early stage; the bottom tower barrel of fans of different models can be adapted; the stability and the rapidness of the whole rotation process of the fan are ensured; the hydraulic jacking system can be used for jacking and landing the offshore wind turbines on the basis of different types of wind turbines.

Description

Marine multifunctional construction ship

Technical Field

The invention relates to a marine multifunctional construction ship, and belongs to the technical field of wind turbine generator system installation equipment.

Background

The installation fan adopts split installation or integral installation. The split installation is to transport all parts of the fan to the side of the offshore fan from land, and adopt offshore hoisting equipment to install the offshore fan piece by piece; the integral installation is to assemble all parts of the fan at a wharf, then transport the fan to the side of the offshore fan, and integrally install the fan by adopting offshore hoisting equipment.

At present, the installation equipment of the offshore wind turbine at home and abroad comprises: jack-up crane, steady pile floating crane, common barge with crawler crane, common floating crane, wind turbine generator marine transport installation vessel, etc.

Wherein, the jack-up crane ship is provided with hydraulic pressure self-elevating leg post. When the ship is in operation, the leg columns are inserted into the seabed and then lift the whole ship away from the water surface, so that the influence of wind waves on the lifting operation can be avoided. The installation fan adopts split type installation fan more.

The stable pile floating crane ship is usually rebuilt by a conventional ship, the scale is smaller than that of a professional crane ship, and the pile leg is rebuilt. The ship body still floats in water by means of self buoyancy in construction, the spud legs only play a role in stabilizing the ship body, the whole weight of the ship and cargoes on the ship cannot be borne, the deck area is small, and generally only two to three fan components can be transported. The installation fan adopts split type installation fan more.

The common barge is additionally provided with the crawler crane, namely the large crawler crane is placed on the common barge for hoisting operation. The installation fan adopts split type installation fan more.

The common floating crane is a marine crane, and can be used for split installation and integral installation of fans. The fan component or the fan on the transport ship is integrally hoisted to the fan foundation by a common large-scale floating crane for installation.

The wind turbine generator marine transportation installation ship, such as the wind turbine generator marine transportation installation ship disclosed in application number 2016210327476, integrates the whole machine shipment of a draught fan wharf, the whole machine transportation of the sea, the whole machine ship unloading of the sea and the installation, and one ship replaces a transport ship and a large crane ship, so that the whole installation of the draught fan can be independently completed on the sea.

The inventor finds that the above-mentioned offshore wind turbine installation equipment has the following defects in the research process:

1. self-elevating crane ship: the manufacturing cost of the ship is too high, and the time for collecting and extending the supporting legs is long (1 day is needed each time).

2. Stability pile floating crane ship: the deck has a relatively small area, is not suitable for long-distance operation, particularly cannot be constructed in a deep water area, and can only be constructed in a shallow water area.

3. The common barge is additionally provided with the crawler crane for fan installation, is only suitable for being more prominent in shallow water areas with smaller wave tides, and can be properly used as an alternative scheme if being on the beach, but has relatively lower efficiency.

4. The common floating crane is used for installing fans, is generally seriously influenced by sea conditions, is greatly influenced by wave tides, has relatively low operation efficiency and has uncertainty in construction period; the fan component is easy to crack once being collided, and the risk is high during installation; requiring a fleet of operations; only large floating vessels can be used, which is not beneficial to the implementation of the vessels.

5. The marine transportation installation ship of wind turbine generator system is only suitable for the installation of single pile foundation fan, and can't satisfy the installation and take one's place to other types of foundations.

Disclosure of Invention

In order to solve the technical problems, the invention provides a multifunctional offshore wind turbine construction ship, which integrates the functions of complete loading of a wind turbine wharf, complete transportation of the offshore wind turbine, complete unloading of the offshore wind turbine, installation and wind turbine dismantling.

The aim of the invention is realized by the following technical scheme:

a novel offshore multi-functional construction ship, comprising: a main hull and a transport support;

the main ship body is formed by connecting two barge ship bodies through a double-ship fixing structure with adjustable ship body distance; the transportation support comprises a main tower frame with adjustable height, an upper cross beam which can be opened and closed left and right, and a lower support with adjustable inner diameter size; the main tower frame is arranged on the main ship body, and the top end of the main tower frame is fixed with the upper cross beam; the upper cross beam is used for supporting the upper cross beam and fixing the upper part of the tower barrel; the lower bracket is fixed with the main hull through a bracket and is used for fixing the lower part of the tower.

Further, the main hull is provided with at least one detachable temporary fan foundation, and the detachable temporary fan foundation is used for being detached and stopped at a wharf in the construction process to serve as a foundation for assembling a fan tower barrel at the wharf; and after the construction is finished, the temporary fan foundation is installed back to the main ship body.

Further, at least one group of main towers are arranged on the main ship body, each main tower consists of two sub-towers which are identical in structure and telescopic in height, and the bottom ends of the two sub-towers are respectively fixed with the two ends of the two barge ship bodies;

the sub-towers consist of an inner sub-tower and an outer sub-tower, wherein the outer sub-tower is nested at the periphery of the inner sub-tower, and the height of the outer sub-tower is lower than the telescopic height of the inner sub-tower; the inner sub-tower is used for controlling the telescopic distance through a jacking oil cylinder arranged at the bottom of the sub-tower and adjusting the height of the sub-tower.

Further, the upper cross beam is a telescopic truss, the telescopic truss is composed of a left cross beam and a right cross beam which are identical in structure and are arranged at the top ends of the two sub-towers in a mirror image mode, the lengths of the left cross beam and the right cross beam are adjusted through an opening and closing mechanism, and the upper parts of fan tower cylinders entering the ends of the left cross beam and the right cross beam are clamped or released.

Further, the left beam and the right beam are respectively composed of an inner beam and an outer beam, the inner beam is arranged in the outer beam, the end part of the inner beam is fixedly provided with a C-shaped hoop, the inner beam controls the expansion of the inner beam through an expansion cylinder on the inner beam, so that the expansion of the C-shaped hoop is driven, the clamping or the release of the upper part of a fan tower cylinder entering the C-shaped hoop is completed, and the overall verticality of the fan tower cylinder is adjusted through an adjusting cylinder on the C-shaped hoop.

Further, the bracket is a group of telescopic U-shaped box-type arm support and consists of an arm support head, an inner box body and an outer box body, a plurality of pairs of symmetrical gears are arranged on the arm support head, the arm support head is connected with the inner box body, the inner box body is connected with a telescopic hydraulic cylinder arranged on the outer box body, the outer box body is of a cuboid box-type structure, and the outer box body is fixed on a lifting upper support of a hydraulic lifting system; the inner box body is pushed out or retracted by controlling the telescopic hydraulic cylinder on the outer box body.

Further, the lower bracket is provided with two parts which are bilaterally symmetrical, the left part and the right part are connected through a flange to form an annular whole, and the lower part of the tower barrel is fixed by adjusting the inner diameter of the lower bracket;

the lower support is arranged on the arm support head at the end part of the bracket, the rack plate on the lower support is correspondingly meshed with the gear on the arm support head of the bracket to form a rotating mechanism, and the installation angle of the fan tower barrel is adjusted through rotation of the rotating mechanism.

Further, the lower support consists of an upper ring beam, a middle ring beam, a lower ring beam, a support column and an inclined beam;

the middle ring beam and the upper ring beam are connected through a support column and are used for fixing the bottom section of the tower barrel; the adjusting flange is connected with the outer flange at the bottom of the tower barrel through a high-strength bolt, and the inner diameter of the middle ring beam can be adjusted; the inner side of the upper ring beam is provided with a plurality of adjusting blocks, and the inner diameter of the upper ring beam is adjusted by the adjusting blocks based on the outer diameter of the tower barrel bottom section, so that the tower barrel bottom section is fixed;

the lower ring beam is connected with the upper ring beam through an inclined beam and is connected with the middle ring beam through a bottom beam; and a rack plate corresponding to the gear on the arm frame head is welded on the outer diameter of the lower ring beam.

Further, the transportation support further comprises a hydraulic jacking system, wherein the hydraulic jacking system is a frame type and is arranged at the bottom periphery of the main tower frame, and based on adjustment of the distance between ship bodies, the telescopic arm support of the hydraulic jacking system drives the bracket to move up and down so as to meet the jacking and landing of the offshore wind turbines with different types of wind turbine foundation adaptation.

Further, the hydraulic jacking system comprises an upright post, a jacking bracket, a vertical jacking oil cylinder and a horizontal oil cylinder.

The upright posts are fixed on the deck of the ship body and used for supporting the jacking bracket;

the jacking bracket comprises a jacking upper bracket and a jacking lower bracket; the jacking upper bracket and the jacking lower bracket are connected through at least one group of vertical jacking oil cylinders, a group of horizontal oil cylinders are respectively arranged on the side surfaces of the jacking upper bracket and the jacking lower bracket, and the vertical jacking oil cylinders and the horizontal oil cylinders are respectively inserted into holes on the upright posts to support the jacking bracket.

Compared with the prior art, the novel offshore multifunctional construction ship provided by the invention has the following beneficial effects:

the distance between the two ship bodies can be adjusted according to the sizes of different types of offshore wind turbine foundations so as to adapt to offshore installation of different types of wind turbine foundation fans; a matched temporary fan foundation is arranged between the two ship bodies, so that temporary foundation construction of a wharf in the current period of building the offshore wind power project can be reduced, and construction cost is saved; the height of the main tower can be adjusted in real time according to the height of a specific tower barrel, and the operation is convenient; the length of the upper cross beam can be adjusted in real time and can be adjusted along with the matching of the distance between the two ship bodies so as to ensure the safety and stability of the transportation tower; the configured hydraulic jacking system is a frame type hydraulic jacking device with a telescopic arm support, and can meet the jacking and landing of offshore fans on different types of fan foundations by matching with the adjustment of the space between ship bodies; the size of an upper ring beam and a middle ring Liang Najing of a lower bracket arranged on the arm support head of the frame type hydraulic jacking system is adjustable, so that the lower bracket can be adapted to bottom tower drums of fans of different models; the rotating mechanism is provided with a plurality of symmetrical pairs, so that the stability and rapidness of the whole rotating process of the fan are ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

fig. 1 is a schematic structural view of a novel offshore multifunctional construction ship provided by an embodiment of the invention.

Fig. 2 is a schematic structural view of an upper beam according to an embodiment of the present invention.

FIG. 3 is a second schematic view of an upper beam according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a lower bracket according to an embodiment of the present invention.

FIG. 5a is a schematic view of a bracket and dual-boat securing structure according to an embodiment of the present invention; fig. 5b is an enlarged schematic view of the double vessel fixing structure of fig. 5 a.

Fig. 6 is a schematic structural diagram of a jacking system according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a temporary infrastructure provided by an embodiment of the invention.

Detailed Description

It is first noted that the examples of the present invention only disclose preferred embodiments, and should not be construed as limiting the practice of the present invention, the scope of which is defined by the appended claims.

As shown in fig. 1, an embodiment of the present invention provides a novel offshore multifunctional construction ship, including: a main hull and a transport support;

the main hull 1 is formed by connecting two barge hulls through a double-ship fixing structure 17 with adjustable hull spacing; the double ship fixing structure 17 is connected with two barges in a structure form as shown in fig. 5a and 5b, and the double ship fixing structure 17 is composed of an outer box 171, an inner box 173, a connecting cylinder 172, a pin hole 174 and a positioning connecting pin 175; the two outer boxes 171 are welded and fixed on the two barge hulls respectively, the two ends of the inner box 173 are nested in the two outer boxes 171 respectively, the two ends of the inner box 173 are connected with the outer boxes 171 respectively through two connecting cylinders 172, a plurality of pin holes 174 are formed in the inner boxes and the outer boxes, after the pin holes of the inner boxes and the outer boxes are overlapped, the inner boxes and the outer boxes are fixedly connected after the overlapped pin holes are inserted through positioning connecting pins 175.

After the separation of the two barge hulls is fixed, the outer tank 171 and the inner tank 173 are locked by inserting the locating connection pins 175 into the corresponding pin holes 174. When the distance between two barge hulls needs to be adjusted, all positioning connecting pins 175 are opened, the connecting oil cylinders extend or retract, the distance between the two barge hulls is increased or decreased under the action of the connecting oil cylinders, and after the distance reaches the expected distance, the positioning connecting pins 175 are inserted into corresponding positioning holes 174 to lock the outer box 171 and the inner box 173, so that the hull distance is fixed.

The transportation bracket comprises a main tower frame 100 with adjustable height, an upper cross beam 300 which can be opened and closed left and right, and a lower bracket 400 with adjustable inner diameter size; the main tower 100 is mounted on the main hull 1, and the top end of the main tower 100 is fixed with the upper cross beam 300; for supporting the upper cross member 300 to maintain the balance of the wind turbine tower during transportation; the upper cross beam 300 is used for fixing the upper part of the tower; the lower bracket 400 is fixed to the main hull 1 by brackets 4 for fixing the lower part of the tower.

As shown in fig. 7, the main hull 1 is provided with at least one detachable temporary fan foundation 130, and the temporary fan foundation 130 is detached to be stopped at a wharf 001 as a foundation for assembling a fan tower at the wharf during construction; after the construction is completed, the temporary fan foundation 130 is installed back on the main hull.

The temporary foundation 130 body may be provided as a hull part structure with a flanged fan foundation mounted in the middle of the top surface. In order to adapt to the installation of fans of different types, different transition section flanges can be installed on the flanges so as to adapt to corresponding fan tower barrels. The temporary foundation can be arranged at the middle parts of the two ends of the multifunctional ship for fan construction. During construction, the temporary foundation 130 is parked at the wharf and serves as a foundation for the fan to be assembled at the wharf 001; after the construction is finished, the temporary foundation is installed on a multifunctional ship to leave the field together.

As shown in fig. 1, the main hull is provided with at least one group of main towers, preferably two groups, symmetrically arranged at two sides of the main hull; the main tower 100 is composed of two sub-towers which have the same structure and are telescopic in height, and the bottom ends of the two sub-towers are respectively fixed with the two ends of the two barge ship bodies 1;

the sub-towers consist of an inner sub-tower 12 and an outer sub-tower 13, wherein the outer sub-tower 13 is nested at the periphery of the inner sub-tower 12, and the height of the outer sub-tower is lower than the telescopic height of the inner sub-tower 12; the inner sub-tower 12 controls the telescopic distance through a jacking cylinder 14 arranged at the bottom of the sub-tower, and adjusts the height of the sub-tower to adapt to towers with different heights.

As shown in fig. 1-3, the upper beam 300 is a telescopic truss, and the telescopic truss is composed of a left beam and a right beam which are identical in structure and are arranged at the top ends of two sub-towers in a mirror image manner, the lengths of the left beam and the right beam are adjusted through an opening and closing mechanism, and the upper parts of the tower barrels of the fans entering the ends of the left beam and the right beam are clamped or released for fixing the upper parts of the tower barrels in the whole transportation process of the fans, so that the whole fans are in a balanced state.

Further, the left beam and the right beam are respectively composed of an inner beam 8 and an outer beam 6, the inner beam 8 is arranged in the outer beam 6, a C-shaped hoop 301 is fixed at the end part of the inner beam 8, the inner beam 8 controls the expansion and contraction of the inner beam 8 through an expansion cylinder 7 on the inner beam, so that the expansion and contraction of the C-shaped hoop 301 are driven, the upper part of a fan tower cylinder entering the C-shaped hoop 301 is clamped or released, and the overall verticality of the fan tower cylinder is adjusted through an adjusting cylinder 302 on the C-shaped hoop 301.

As shown in fig. 1 and fig. 5, the bracket 4 is a set of telescopic U-shaped box-shaped arm support, and is composed of an arm support head 430, an inner box body 420 and an outer box body 410, wherein a plurality of pairs of symmetrical gears 431 are arranged on the arm support head 430, the arm support head 430 is connected with the inner box body 420, the inner box body 420 is connected with a telescopic hydraulic cylinder arranged on the outer box body 410, the outer box body 410 is in a cuboid box-shaped structure, and the outer box body 410 is fixed on a lifting upper bracket 443 of the hydraulic lifting system 2; the inner casing 420 is pushed out or retracted by controlling a telescopic hydraulic cylinder on the outer casing 410.

As shown in fig. 4-5, the lower bracket 400 is divided into two parts which are symmetrical left and right, the left and right parts are connected through a flange 401 to form a ring-shaped whole, and the lower part of the tower is fixed by adjusting the inner diameter of the lower bracket 400;

the lower bracket 400 is installed on the arm support head 430 at the end part of the bracket 4, the rack plate 407 on the lower bracket 400 is correspondingly meshed with the gear 431 on the arm support head 430 of the bracket 4 to form a rotating mechanism, and the installation angle of the fan tower is adjusted through the rotation of the rotating mechanism. In the fan installation process, when circumferential deviation occurs in the whole fan in place, the rotating mechanism is started, and the fan installation angle is adjusted along with rotation of the gear 431.

The lower bracket 400 consists of an upper ring beam 402, a middle ring beam 405, a lower ring beam 403, a support column 406 and an inclined beam 404;

the middle ring beam 405 and the upper ring beam 402 are connected through a support column 406 for fixing the bottom section of the tower; the middle ring beam 405 is provided with an adjusting flange 408, the adjusting flange is a multi-section assembly, the adjusting flange is connected with the outer flange at the bottom of the tower barrel through a high-strength bolt, and the adjusting flange can adjust the inner diameter of the middle ring beam; a plurality of adjusting blocks 409 are arranged in the upper ring beam 402, and the inner diameter of the upper ring beam is adjusted by the adjusting blocks based on the outer diameter of the tower barrel bottom section, so that the tower barrel bottom section is fixed;

the lower ring beam 403 is connected with the upper ring beam 402 through an inclined beam 404 and is connected with the middle ring beam 405 through a bottom beam; a rack plate 407 corresponding to the gear 431 of the rack arm head 430 is welded to the outer diameter of the lower ring beam 403.

As shown in fig. 6, the transportation bracket further includes a hydraulic jacking system 2, where the hydraulic jacking system is a frame and is arranged at the bottom periphery of the main tower frame, and based on the adjustment of the space between the ship bodies, the telescopic arm support of the hydraulic jacking system drives the bracket 4 to move up and down to meet the lifting and falling of the offshore wind turbines with different types of wind turbine foundation adaptation.

The hydraulic jacking system 2 comprises a column 5, a jacking bracket, a vertical jacking cylinder 3 and a horizontal cylinder 441.

The upright post 5 is fixed on a deck of the ship body and used for supporting the jacking bracket;

the jacking brackets comprise a jacking upper bracket 443 and a jacking lower bracket 442; the jacking upper bracket 443 and the jacking lower bracket 442 are connected through at least one group of vertical jacking cylinders 3, a group of horizontal cylinders 441 are respectively arranged on the side surfaces of the jacking upper bracket 443 and the jacking lower bracket 442, and the vertical jacking cylinders 3 and the horizontal cylinders 441 are respectively inserted into holes on the upright posts 5 to support the jacking bracket.

Also included is a guide and positioning mechanism 110 located between the two barges, the position of which can be adjusted along the length of the hull. The double-body barge is used for rapidly clamping a fan foundation and ensuring that the center of a tower barrel at the bottom of the fan can be overlapped with the center of the foundation when the fan is integrally loaded or integrally installed in place.

In order to prevent a violent collision of the hull and the foundation, a buffer device 120 is provided at the inboard side of the catamaran barges to buffer the impact of the hull on the foundation.

The operation of the present invention at a fan dock is described in detail below by way of a specific example.

1. Arranging a temporary basic operation process:

prior to construction, the temporary foundation 130 is detached from the main hull 1 and arranged on the quay 001 as shown in fig. 7. The wind turbines have been mounted on temporary wind turbine foundations 130 at the quay by large crawler cranes prior to loading the wind turbines into the ship.

2. The dock fan assembly operation process comprises the following steps:

when the novel offshore multifunctional construction ship provided by the invention approaches to a wharf, an upper cross beam and a bracket 4 on a transportation bracket close to a fan foundation end (comprising a temporary fan foundation or a fan foundation arranged at the wharf in the earlier stage) are opened, and the height of the bracket is slightly higher than that of the fan foundation; the present embodiment preferably employs a temporary fan foundation 130. The temporary wind turbine foundation 130 is slowly driven in with the central axis of the hull direction aligned with the temporary wind turbine foundation 130 so that the temporary wind turbine foundation 130 is inserted between the main hulls 1. With the adjustment of the double ship fixing structure 17, the blower enters the transport bracket. After the position of the ship body is adjusted, the ship body is anchored and fixed. The bracket 4 is slightly lower than the lower flange of the tower through the up-down adjustment of the jacking bracket; the inner box 420 on the bracket is pushed out under the action of the telescopic hydraulic cylinder, and the lower bracket 400 is folded; the lower bracket 400 and the lower flange (outer flange) of the tower barrel are completely abutted through the adjustment in the up-down direction and the left-right direction, and the lower bracket 400 and the lower flange of the tower barrel are connected through high-strength bolts. Subsequently, the main tower is adjusted to a proper position according to the height of the tower of the fan, the telescopic oil cylinder 7 extends out, the inner cross beam 8 is closed, and the upper tower is fixed in the inner cross beam 8.

After the whole fan is fixed on the transportation bracket, the lower flange (inner flange) of the fan tower and the fastening bolts of the temporary fan foundation 130 are removed. The hydraulic jack system is then restarted to lift the entire blower off of the temporary blower base 130. In the process of lifting the fan, the balance of the novel offshore multifunctional construction ship can be adjusted through the pressurized water of the ship compartment if necessary. When the lower flange of the lower tower barrel is separated from the fan foundation by about 500mm, the anchor is collected by the novel offshore multifunctional construction ship, and the lower flange is slowly driven away from the fan foundation. When the fan leaves the fan foundation completely, the hydraulic jacking system is depressurized slowly, and the height of the main tower is reduced synchronously, so that the hydraulic jacking bracket falls at a proper height capable of meeting the requirement of safe transportation.

After the shipment of the first fan is completed, the ship body turns around, and the integral shipment of the second fan is completed at the other end of the novel offshore multifunctional construction ship by the same method.

3. The fan transportation and installation operation process comprises the following steps:

after the two sets of fans are loaded, when necessary, the balance of the novel offshore multifunctional construction ship is adjusted again through the pressurized water of the ship compartment, and the fans are integrally transported to an offshore wind farm under the condition of proper weather.

After the novel offshore multifunctional construction ship approaches the target fan foundation 15, the running direction of the ship is adjusted according to the installation direction on the fan foundation 15 and the direction of the fan tower drum door, and after the multifunctional ship for fan construction is clamped into the fan foundation 15, the installation direction of the fan is basically consistent with the design direction.

The new offshore multi-functional construction vessel is slowly driven to the fan foundation 15 so that the foundation is located between the fan construction multi-functional vessels.

And (3) starting a hydraulic jacking system, and synchronously lifting the height of the main tower along with the jacking of the hydraulic system, wherein the fan is lifted to a certain height (the lower flange surface of the bottom tower of the fan is 500-1000 mm higher than the upper surface of the foundation flange of the fan).

The positioning and guiding device on the novel offshore multifunctional construction ship is adjusted, so that the ship body slowly leans against the fan foundation 15, and the fan is integrally positioned right above the foundation and is anchored and positioned.

The hydraulic jacking system is depressurized and descends, the height of the main tower frame is synchronously lowered, the fan slowly approaches to the fan foundation along with the falling of the jacking bracket, and the hydraulic jacking system pauses to fall when the distance between the lower flange of the tower barrel and the foundation flange is about 200 mm. Checking the deviation of the installation direction of the fan, and starting a rotating mechanism on the bracket according to the deviation direction to enable the whole fan to slowly rotate clockwise or anticlockwise. When the fan rotates to an accurate installation position, temporary guide rods are inserted into two flange holes along any diameter position on the flange in the tower barrel, so that the fan and the foundation position are relatively fixed. The hydraulic jacking system continues to descend until the whole fan falls on the fan foundation.

After the fan is completely positioned on the foundation, the fan is fixed on the foundation by fastening bolts as soon as possible. After the fastening bolts have completed the prescribed fastening torque values, the lower bracket 400 starts to be removed and the upper cross member 300 starts to be opened.

The lower bracket 400 is removed first. First, the fastening bolts between the two parts of the bracket are loosened by using a hydraulic torque wrench, and then the fastening bolts of the lower bracket 400 and the lower flange of the tower are loosened. Then, the telescopic hydraulic cylinders of the inner box 420 are controlled to be opened, the left and right lower brackets move back, and the clamping of the tower barrel is released.

And then the upper cross beam is removed. Opening the opening and closing mechanism of the upper cross beam 300, controlling the telescopic cylinder 7 to shrink by the opening and closing mechanism, opening the upper cross beam 300, and loosening the upper clamping of the tower.

And finally, the anchor is received, slowly separated from the fan foundation 15 and driven to the next foundation on which the fan is to be installed. And installing another fan by the same method.

Using the multifunctional ship, one ship replaces a plurality of ships in other schemes; the working efficiency is far higher than other schemes; the labor intensity of constructors is greatly reduced; the high-altitude operation of constructors is avoided, and the safety risk of high-altitude falling of constructors is eliminated.

The advantages are that:

1. the novel offshore multifunctional construction ship in the scheme integrates functions of loading, transporting, unloading, installing and dismantling of the offshore wind farm fan, is a special ship suitable for the offshore wind farm in China, and can be an important component in an offshore wind power construction industry chain.

2. The use of the catamaran can reduce the investment of the transport ship. The wharf is provided with two self-contained temporary fan foundations, and the whole fan shipment is self-loading of the catamaran, so that two transport vessels are not needed to ensure that the wharf assembly work is continuously carried out.

3. By adopting the scheme, the construction efficiency is improved to a great extent. For the integral installation scheme, the scheme does not need to install and disassemble special tooling equipment in the shipping and installation processes, and the construction time is relatively greatly shortened. Moreover, in the scheme, the transportation support is closed by adopting hydraulic control, so that a constructor is not required to dismantle the fastening bolt at high altitude, and the hook and the unhooking of the high altitude sling are not required to be carried out for many times, thereby avoiding the high altitude operation of the constructor.

4. Lifting by adopting a crane ship can be influenced by the sea storm and the movement of the crane ship, so that the risk of unbalanced gravity center exists in the lifting process of the fan. By adopting the scheme, the stability of the fan is always protected by the main tower and the upper bracket, so that the gravity center is prevented from being unstable. And the height of the lifting arm is not required to be considered.

5. When the crane ship is used for hoisting, the hoisting arm is relatively high, the steel wire rope is long, the elasticity of the rope is large, and the hoisting ship is easy to shake up and down, so that larger impact is caused. After the scheme is adopted, even if the hydraulic device is affected by waves to shake, the hydraulic device can greatly slow down the impact force under the regulation and control of the hydraulic control system and even can eliminate the impact force.

6. Lifting operation is carried out by adopting a crane ship, and a set of soft landing equipment is required to be installed on a foundation and a lifting tool when fan equipment is in place. By adopting the scheme, soft landing equipment is not required to be installed on the fan foundation and the bracket, and the hydraulic jacking system can be regulated and controlled by itself.

7. The scheme is suitable for all offshore wind turbine foundations. The fans with various specifications and models can be installed by adapting to the lower brackets with different models; different forms of fan foundations can be adapted by adjusting the spacing between the two barges. The installation influence caused by tides and fan foundations of different heights is solved by adjusting the heights of the hydraulic jacking system and the main tower. The total working stroke of the hydraulic device is not more than 1 meter as much as possible, and the working time is reduced.

8 the installation ship has good applicability, and when the heights of the towers of the same fan become high, only the jacking upper bracket and the jacking lower bracket of the jacking system are required to be lifted to proper heights. For other fan-mounted vessels, a crane with larger lifting capacity needs to be replaced, a crane with longer lifting arm or a crane with a tower height is replaced, and the cost of the reconstruction is very high and sometimes even the crane cannot be reconstructed.

Finally, it should be pointed out that any entity or individual using or implementing the technical solution of the present invention is an infringement of the present invention, and that no entity or individual is allowed to implement the present patent alone without the applicant's permission. Any unit or person who is motivated by the present invention or who is simply adapted to practice is also considered to be the scope of this patent.

Claims

1. An offshore multifunctional construction vessel, comprising: a main hull and a transport support;

the main ship body is formed by connecting two barge ship bodies through a double-ship fixing structure with adjustable ship body distance; the transportation support comprises a main tower frame with adjustable height, an upper cross beam which can be opened and closed left and right, and a lower support with adjustable inner diameter size; the main tower frame is arranged on the main ship body, and the top end of the main tower frame is fixed with the upper cross beam; the upper cross beam is used for supporting the upper cross beam and fixing the upper part of the tower barrel; the lower bracket is fixed with the main hull through a bracket and is used for fixing the lower part of the tower;

the bracket is a group of telescopic U-shaped box-type arm support and consists of an arm support head, an inner box body and an outer box body, a plurality of pairs of symmetrical gears are arranged on the arm support head, the arm support head is connected with the inner box body, the inner box body is connected with a telescopic hydraulic cylinder arranged on the outer box body, the outer box body is of a cuboid box-type structure, and the outer box body is fixed on a lifting support of a hydraulic lifting system; pushing out or withdrawing the inner box body by controlling a telescopic hydraulic cylinder on the outer box body;

the lower support consists of an upper ring beam, a middle ring beam, a lower ring beam, a support column and an inclined beam; the middle ring beam and the upper ring beam are connected through a support column and are used for fixing the bottom section of the tower barrel; the adjusting flange is connected with the outer flange at the bottom of the tower barrel through a high-strength bolt, and the inner diameter of the middle ring beam can be adjusted; the inner side of the upper ring beam is provided with a plurality of adjusting blocks, and the inner diameter of the upper ring beam is adjusted by the adjusting blocks based on the outer diameter of the tower barrel bottom section, so that the tower barrel bottom section is fixed; the lower ring beam is connected with the upper ring beam through an inclined beam and is connected with the middle ring beam through a bottom beam; a rack plate corresponding to the gear on the arm frame head is welded on the outer diameter of the lower ring beam;

the transportation support further comprises a hydraulic jacking system, wherein the hydraulic jacking system is a frame type and is arranged at the periphery of the bottom of the main tower frame, and based on adjustment of the space between ship bodies, the telescopic arm support of the hydraulic jacking system drives the bracket to move up and down so as to meet the jacking and landing of offshore fans with different types of fan foundation adaptation.

2. An offshore multi-purpose construction vessel, as claimed in claim 1, wherein said main hull is provided with at least one removable temporary fan foundation for being removed and docked at a quay as a foundation for the assembly of a fan tower at the quay during construction; and after the construction is finished, the temporary fan foundation is installed back to the main ship body.

3. An offshore multi-functional construction ship according to claim 1 or 2, wherein the main hull is provided with at least one group of main towers, each main tower consists of two sub-towers which are identical in structure and telescopic in height, and the bottom ends of the two sub-towers are respectively fixed with the two ends of the two barge hulls;

4. The offshore multifunctional construction ship according to claim 1 or 2, wherein the upper cross beam is a telescopic truss, the telescopic truss is composed of a left cross beam and a right cross beam which are identical in structure and are arranged at the top ends of the two sub-towers in a mirror image mode, the lengths of the left cross beam and the right cross beam are adjusted through an opening and closing mechanism, and the upper parts of fan towers entering the end portions of the left cross beam and the right cross beam are clamped or released.

5. The marine multifunctional construction ship according to claim 4, wherein the left beam and the right beam are respectively composed of an inner beam and an outer beam, the inner beam is arranged in the outer beam, the end part of the inner beam is fixed with a C-shaped hoop, the inner beam controls the expansion and contraction of the inner beam through an expansion cylinder on the inner beam, so that the expansion and contraction of the C-shaped hoop are driven, the clamping or releasing of the upper part of a fan tower entering the C-shaped hoop is completed, and the overall verticality of the fan tower is adjusted through an adjusting cylinder on the C-shaped hoop.

6. The marine multifunctional construction ship according to claim 1, wherein the lower bracket is formed in a left-right symmetrical shape, the left-right parts are connected by flanges to form an annular whole, and the lower part of the tower is fixed by adjusting the inner diameter of the lower bracket;

7. The marine multi-purpose construction vessel according to claim 1, wherein the hydraulic jack-up system comprises a column, a jack-up stand, a vertical jack-up cylinder and a horizontal cylinder;