Floating type wind power tower inhaul cable integrated installation method

Abstract

The invention discloses a floating type wind power tower inhaul cable integrated installation method which comprises the steps that S1, a bottom section tower, a floating type foundation of floating type wind power and a plurality of buoys are assembled; s2, a main operation platform and an auxiliary operation platform are built, and a main guiding device, an auxiliary guiding device, a main tensioning device and an auxiliary tensioning device are arranged; s3, the two leaning towers are sequentially moved to the left side and the right side of the bottom section tower frame in a double-machine lifting mode; s4, the two leaning towers are hinged to the top end of the bottom section tower frame; s5, connection between the main inhaul cable and the leaning tower and the main tensioning device and connection between the auxiliary inhaul cable and the leaning tower and the auxiliary tensioning device are completed; and S6, the two leaning towers, the two main inhaul cables and the two auxiliary inhaul cables are synchronously lifted to the preset height, and butt joint of the bottom section tower frame and the leaning towers and butt joint of the two main inhaul cables and the two auxiliary inhaul cables are completed. The method can effectively solve the problems of long construction period, high difficulty, low construction efficiency, long high-altitude operation time, high cost and the like of the existing double-machine-head fan tower inhaul cable installation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of installation of floating wind turbine, in particular to a floating wind turbine tower cable integrated installation method. BACKGROUND

[0002] At present, the tower cable installation of double-head wind turbine generally adopts a segmented hoisting process of collaborative operation of multiple main hoisting machines and auxiliary hoisting machines. According to the structural characteristics and design requirements of the tower, the tower is divided into several hoisting sections. During hoisting, the main hoisting machine undertakes the main hoisting task, and the auxiliary hoisting machine is responsible for adjustment and stabilization to ensure accurate positioning of the tower. After each section of the tower is hoisted into position, the tower is connected into a whole through welding or high-strength bolt connection, and then a staged tensioning process is adopted for cable tensioning. However, there are many problems in the current installation of double-head tower cable. For example, the construction efficiency is low, the personnel high-altitude operation time is long, and the project comprehensive cost is high. The segmented hoisting installation process has a long construction period, and the close connection of each construction link requires high operation precision, which greatly increases the construction difficulty and cannot meet the product batch production demand, and cannot form a scale effect. Only a few domestic production manufacturers are equipped with hoisting equipment that meets the use requirements of the segmented hoisting process, which further limits the installation progress and production capacity expansion of double-head wind turbine generators. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art and provide a floating wind turbine tower cable integrated installation method, which can effectively solve the problems of long construction period, high difficulty, low construction efficiency, long personnel high-altitude operation time and high cost of the current double-head wind turbine tower cable installation.

[0004] The object of the present application can be achieved by adopting the following technical solutions: A floating wind turbine tower cable integrated installation method, the tower comprising a bottom section tower and two inclined towers; the installation method needs to be configured with a main guide device, an auxiliary guide device, a main tensioning device, an auxiliary tensioning device, a main operation platform, an auxiliary operation platform, two main cables, two auxiliary cables and two main hoisting machines, and the installation method comprises the steps of, S1, assembling the bottom section tower, the floating foundation of the floating wind turbine and the plurality of pontoons, then overhauling them into the water and dragging them back to the wharf edge for temporary mooring; S2, building a main operation platform and an auxiliary operation platform on the wharf edge, the main operation platform or the auxiliary operation platform being an operation platform with hoisting function, the building height of the main operation platform and the auxiliary operation platform being the same as the preset height after the main cable and the auxiliary cable are lifted into position, the main guide device and the main tensioning device being arranged on the main operation platform, and the auxiliary guide device and the auxiliary tensioning device being arranged on the auxiliary operation platform; S3, the operation platform is used to connect the two main cranes in turn, and the two inclined towers are lifted to the left and right sides of the bottom tower by the double-machine lifting mode; S4, after the two inclined towers are positioned, the other end of each inclined tower is hinged to the top end of the bottom tower, and then the lifting hooks of the lifting arms are released; S5, one end of each of the two main cables is connected to one end of each of the two inclined towers, and the other end of each of the two main cables is wound around the main guide device and then connected to the main tensioning device; one end of each of the two auxiliary cables is connected to the middle part of each of the two inclined towers, and the other end of each of the two auxiliary cables is wound around the auxiliary guide device and then connected to the auxiliary tensioning device; S6, the main tensioning device and the auxiliary tensioning device are started, and the two inclined towers, the two main cables and the two auxiliary cables are lifted to the preset height by the two tensioning devices and the two main cranes, then the bottom tower and the inclined tower are connected, the main cables are connected, and the auxiliary cables are connected, and each cable is tensioned to the preset value, thereby realizing the integrated installation of the floating wind power tower cable.

[0005] Further, the inclined tower is connected to the corresponding main cable through the cabin adapter.

[0006] Further, the main guide device comprises two main pulleys arranged symmetrically left and right.

[0007] Further, the auxiliary guide device comprises two auxiliary pulleys arranged symmetrically left and right.

[0008] Further, the main tensioning device and the auxiliary tensioning device are both winches.

[0009] Further, the top end of the bottom tower is provided with a tower connecting piece for connecting the two inclined towers, and the inclined towers are fixedly connected to the bottom tower through the tower connecting piece after being lifted to the preset height.

[0010] Further, the hinge positions of the bottom tower and the inclined tower are respectively provided with hinge tools with pin holes, and the pin shaft is used to pass through the pin holes of the two hinge tools to realize the hinge connection of the bottom tower and the inclined tower.

[0011] Further, the inclined tower is provided with a plurality of lifting holes for connecting the main crane and the lifting arm.

[0012] Further, the bottom tower is fixedly installed at the top center of the floating foundation of the floating wind power, and a plurality of floating buoys are arranged radially symmetrically around the central axis of the floating foundation of the floating wind power.

[0013] Further, the bottom tower and the inclined tower are both pre-assembled structures.

[0014] Compared with the prior art, the present application has the following advantages and beneficial effects: 1. The present application can greatly reduce the dependence on large hoisting machines. The existing installation scheme adopts multiple hoisting machines for cooperation, and the synchronization between the hoisting machines is required to be very high. With the large-scale of the unit, the requirement for the hoisting machine is also higher and higher. The present application adopts the tower cable integrated installation method, and only two conventional hoisting machines are needed to assist in transferring at the wharf side, which greatly reduces the construction difficulty.

[0015] 2. The present application greatly reduces the risk of high-altitude operation. The existing installation scheme requires high-altitude operation for the butt joint of each tower cylinder section and the installation of the cable, which has a high risk. In the present application, the assembly of each section of the tower and the connection of the cable end are completed on the ground, and the personnel operation area has a relatively safe operation platform, reducing the high-altitude operation content.

[0016] 3. The present application can effectively shorten the construction period of the tower cable installation process. Compared with the existing installation method, there is no complex and high-difficulty high-altitude operation, and most of the work can be completed on the ground, which greatly improves the construction efficiency and shortens the construction period.

[0017] 4. The present application has the outstanding natural advantage of resisting typhoon. In the existing installation scheme, four hoisting machines are used in the last stage of installation, and the hoisting machines cannot be removed until the last installation of the tower cable is completed. If a typhoon occurs at this time, the unit and the hoisting machine will face great risks. The installation method of the present application can quickly lower the inclined towers on both sides when a typhoon occurs at the same time, and then install them again after the typhoon passes. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the floating wind power tower cable installation in the present application.

[0019] Figure 2 is Figure 1 a partial schematic view.

[0020] Figure 3 is a structural schematic view of the floating wind power tower cable installation in the present application. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] For example, Figures 1 to 3As shown, the embodiment provides a floating wind power tower cable integrated installation method, the tower includes a bottom tower 1 and two inclined towers 2.

[0023] The installation method needs to be configured with a main guide device 5, an auxiliary guide device 6, a main tensioning device 7, an auxiliary tensioning device 8, a main operation platform, an auxiliary operation platform, two main cables 9, two auxiliary cables 10 and two main cranes, and the installation method includes steps, S1, assemble the bottom tower 1, the floating foundation 3 of the floating wind power and the plurality of pontoons 4 at the wharf, then overboard and drag back to the wharf side for temporary mooring, and prepare for the subsequent installation of the inclined tower 2 and the cable; wherein the bottom tower 1 is fixedly installed at the top center of the floating foundation 3 of the floating wind power, and the plurality of pontoons 4 are arranged radially symmetrically around the central axis of the floating foundation 3 of the floating wind power; S2, build a main operation platform and an auxiliary operation platform at the wharf side, the main operation platform or the auxiliary operation platform is an operation platform with lifting function, the built height of the main operation platform and the auxiliary operation platform is the same as the preset height after the main cable 9 and the auxiliary cable 10 are lifted into position, the main guide device 5 and the main tensioning device 7 are arranged on the main operation platform, and the auxiliary guide device 6 and the auxiliary tensioning device 8 are arranged on the auxiliary operation platform, so as to facilitate the operation of the main cable 9 and the auxiliary cable 10 by the construction personnel; S3, use the hoist arm of the operation platform to cooperate with the two main cranes in turn, and move the two inclined towers 2 to the left and right sides of the bottom tower 1 in turn by double-machine lifting method; the inclined tower 2 is provided with a plurality of lifting holes for connecting the main crane and the hoist arm, and each time the operation is performed, one main crane is connected with the lifting hole at one end of one inclined tower 2, and the hoist arm is connected with the lifting hole at the other end of the inclined tower 2; S4, the specified positions of the bottom tower 1 and the inclined tower 2 are respectively provided with a hinge tool 11 with a pin hole 1101, the welding of the hinge tool 11 is completed before the bottom tower 1 and the inclined tower 2 are shipped, so as to ensure that the welding quality meets the relevant standard requirements, so as to provide sufficient connection strength; after the two inclined towers 2 are in position, the hoist arm of the operation platform is finely adjusted, the hinge tools 11 of the bottom tower 1 and the inclined tower 2 are accurately positioned respectively, then the pin shaft is inserted through the pin holes 1101 of the two hinge tools 11, so as to realize the hinge connection of the bottom tower 1 and the inclined tower 2, and the two form a connection node with a specific degree of freedom, and then the hook of the hoist arm is released; S5, one end of each of the two main cables 9 is connected with one end of each of the two inclined towers 2, in the embodiment, the inclined tower 2 is provided with a cabin adapter 201, which is connected with the corresponding main cable 9 through the cabin adapter 201, the other end of each of the two main cables 9 is connected with the main tensioning device 7 through the main guide device 5, one end of each of the two auxiliary cables 10 is connected with the middle part of each of the two inclined towers 2, and the other end of each of the two auxiliary cables 10 is connected with the auxiliary tensioning device 8 through the auxiliary guide device 6. S6, start the main tensioning device 7 and auxiliary tensioning device 8, through the cooperation of two main cranes, two inclined towers 2, two main cables 9 and two auxiliary cables 10 are synchronously lifted to the preset height, and at the same time, the tensioning force is applied to the cable through the two tensioning devices, so that the cable is in a pre-tightening state, then the butt joint of the bottom tower 1 and the inclined tower 2, the butt joint between the main cables 9 and the butt joint between the auxiliary cables 10 are completed, and each cable is tensioned to the preset value, so as to realize the integrated installation of the floating wind power tower cable. During the lifting of the inclined tower 2, in order to maintain the force balance of the whole system and avoid structural instability or deformation caused by uneven force on both sides, it is necessary to strictly ensure that the lifting speed of the left and right inclined towers 2 is consistent.

[0024] The main guide device 5 is composed of two left and right symmetrical main pulleys, which provide accurate guidance for the installation and tensioning of the main cable 9 through the two main pulleys; the auxiliary guide device 6 is composed of two left and right symmetrical auxiliary pulleys, which provide accurate guidance for the installation and tensioning of the auxiliary cable 10 through the two auxiliary pulleys.

[0025] The main tensioning device 7 and the auxiliary tensioning device 8 can adopt a winch.

[0026] The top end of the bottom tower 1 is provided with a tower connecting piece 101 for connecting two inclined towers 2, and after the inclined tower 2 is lifted to the preset height, it is fixedly connected with the bottom tower 1 through the tower connecting piece 101.

[0027] The bottom tower 1 and the inclined tower 2 of the present application are both pre-assembled structures, and the bottom tower 1 and the inclined tower 2 are pre-hinged and connected, most of the assembly work can be completed at the wharf, which reduces the hoisting operation time, finally through the cooperation of the tensioning device and the main crane, the inclined tower and the cable are synchronously lifted to the preset height, realizing the integrated installation of the tower cable, the whole structure is simple, convenient to operate, high in construction efficiency, short in construction period, low in safety risk, and the conventional hoisting crane can meet the use requirements, which significantly reduces the comprehensive cost of the project, and helps to promote the development of the industry to scale and standardization.

[0028] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the scope disclosed by the present application, which belongs to the protection scope of the present application.

Claims

1. A method for integrated installation of a floating wind turbine tower cable, the tower comprising a bottom section tower and two inclined towers; characterized in that: The installation method is configured with a main guide device, an auxiliary guide device, a main tensioning device, an auxiliary tensioning device, a main operation platform, an auxiliary operation platform, two main cables, two auxiliary cables and two main cranes, and comprises the steps of S1, assembling a bottom section tower, a floating foundation of the floating wind power and a plurality of pontoons, and then overboarding and dragging back to the wharf side for temporary mooring; S2, erecting the main operation platform and the auxiliary operation platform on the wharf side, the main operation platform or the auxiliary operation platform being an operation platform with a lifting function, the erection height of the main operation platform and the auxiliary operation platform being the same as the preset height after the main cable and the auxiliary cable are lifted into position, the main guide device and the main tensioning device being arranged on the main operation platform, and the auxiliary guide device and the auxiliary tensioning device being arranged on the auxiliary operation platform; S3, using the lifting arms of the operation platforms to sequentially cooperate with the two main cranes, and sequentially lifting the two inclined towers to the left and right sides of the bottom section tower by the double-machine lifting mode; in each operation, connecting one main crane with one end of an inclined tower, and connecting the lifting arm with the other end of the inclined tower; S4, after the two inclined towers are positioned, hingedly connecting the other ends of the two inclined towers with the top end of the bottom section tower, and then releasing the lifting hooks of the lifting arms; S5, connecting one end of each of the two main cables with one end of each of the two inclined towers, and connecting the other end of each of the two main cables around the main guide device and then with the main tensioning device; connecting one end of each of the two auxiliary cables with the middle part of each of the two inclined towers, and connecting the other end of each of the two auxiliary cables around the auxiliary guide device and then with the auxiliary tensioning device; S6, starting the main tensioning device and the auxiliary tensioning device, synchronously lifting the two inclined towers, the two main cables and the two auxiliary cables to the preset height by the two tensioning devices cooperating with the two main cranes, then completing the butt joint of the bottom section tower and the inclined tower, the butt joint of the main cables and the butt joint of the auxiliary cables, and tensioning each cable to the preset value, so as to realize the integrated installation of the floating wind power tower cable.

2. The method of claim 1, wherein: The inclined tower is connected with the corresponding main cable through a cabin adapter.

3. The method of claim 1, wherein: The main guide device comprises two main pulleys arranged in left-right symmetry.

4. The method of claim 1, wherein: The auxiliary guide device comprises two auxiliary pulleys arranged in left-right symmetry.

5. The method of claim 1, wherein: The main tensioning device and the auxiliary tensioning device are both winches.

6. The method of claim 1, wherein: The top end of the bottom section tower is provided with a tower connecting piece for connecting the two inclined towers, and the inclined tower is fixedly connected with the bottom section tower through the tower connecting piece after being lifted to the preset height.

7. The method of claim 1, wherein: The hinge connection position of the bottom section tower and the inclined tower is respectively provided with a hinge tool with a pin hole, and a pin shaft is used to pass through the pin holes of the two hinge tools to realize the hinge connection of the bottom section tower and the inclined tower.

8. The method of claim 1, wherein: A plurality of lifting holes for connecting the main crane and the lifting arm are arranged on the inclined tower.

9. The method of claim 1, wherein: The bottom section tower is fixedly installed on the top center of the floating foundation of the floating wind power, and the plurality of pontoons are arranged in radial symmetry around the central axis of the floating foundation of the floating wind power.

10. The method of claim 1, wherein: The bottom section tower and the inclined tower are both pre-assembled structures.

Images