Integrated lifting type quick connection tower drum suitable for offshore wind power and construction method

Abstract

This invention discloses an integrated, liftable, quick-connect tower suitable for offshore wind power and its construction method. The quick-connect tower includes a top cylinder, a middle cylinder, and a bottom cylinder. The middle cylinder is located inside the bottom cylinder; the top cylinder is located inside the middle cylinder; multiple equally spaced first cylinder top tooth plates are arranged on the inner side of the top of the middle cylinder; a first cylinder internal hook lock is installed between any two adjacent first cylinder top tooth plates; the first cylinder internal hook lock is used to hook the bottom of the top cylinder; multiple equally spaced second cylinder top tooth plates are arranged on the inner side of the top of the bottom cylinder; a second cylinder internal hook lock is installed between any two adjacent second cylinder top tooth plates; the second cylinder internal hook lock is used to hook the bottom of the middle cylinder. When transported with the offshore wind turbine by an installation vessel, the integrated, liftable, quick-connect tower of this invention can be in a retracted state with a lower center of gravity, avoiding the risk of capsizing. Simultaneously, the internal hook locks on the inner side of the tower allow the tower to be self-locking and installed in place during deployment, eliminating the need for manual assistance and significantly reducing wind turbine installation costs.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power technology, and in particular to an integrated lifting quick-connect tower suitable for offshore wind power and its construction method. Background Technology

[0002] Offshore wind power, as a cutting-edge development direction in the field of clean energy in recent years, has shown considerable development potential and application prospects due to its efficient use of marine space.

[0003] Due to the high installation costs and risks associated with offshore wind power, developing large-scale wind turbines is an effective way to save costs, and large turbines can effectively cope with the high-intensity wind, wave, and current loads at sea. However, the installation of offshore wind turbines requires transporting them to designated locations by installation vessels, which places stringent requirements on the stability of the installation vessels (i.e., construction vessels) and weather conditions during transport.

[0004] However, for traditional offshore wind turbines (i.e., offshore wind turbine generators), they are transported together with the turbine tower. Because the overall center of gravity of the turbine tower, which serves as the support structure of the turbine, is relatively high (the top of the turbine tower is used to install the wind turbine generator), when the installation vessel (i.e., the construction vessel) is affected by complex environmental loads such as wind, waves, and currents, the tower structure is prone to pitching and rolling, and may even experience severe swaying, which could lead to the risk of the tower and the offshore wind turbine installed on top of it capsizing.

[0005] Therefore, there is an urgent need to develop a technology that can solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to address the technical deficiencies of existing technologies by providing an integrated lifting quick-connect tower and construction method suitable for offshore wind power.

[0007] Therefore, the present invention provides an integrated lifting quick-connect tower suitable for offshore wind power, which includes a top cylinder, a middle cylinder and a bottom cylinder; the top cylinder, the middle cylinder and the bottom cylinder are all vertically distributed and hollow structures; A middle cylinder is installed inside the bottom cylinder; a top cylinder is installed inside the middle cylinder. Multiple equally spaced first cylinder top tooth plates are arranged around the inner side of the top of the middle cylinder; A first cylinder inner hook lock is provided at a position between any two adjacent first cylinder top tooth plates and is hinged to the upper end of the first cylinder inner hook lock; The first inner hook lock is used to hook the bottom of the top cylinder when the tower is in the extended position; Multiple equally spaced second cylinder top tooth plates are arranged around the inner side of the top of the bottom cylinder; A second cylinder inner hook lock is provided at a position between any two adjacent second cylinder top tooth plates and is hinged to the upper end of the second cylinder inner hook lock; The second inner cylinder hook lock is used to hook onto the bottom of the middle cylinder when the tower cylinder is in the extended position; The lower part of the top cylinder wall has multiple first cylinder bottom tooth plates distributed at equal intervals along the circumference; When the tower is in the extended position, the first bottom toothed plate on the top cylinder and the first top toothed plate on the middle cylinder mesh with each other. The lower part of the cylinder wall of the middle cylinder has multiple second cylinder bottom tooth plates distributed at equal intervals along the circumference; When the tower is in the extended position, the second bottom toothed plate on the middle cylinder and the second top toothed plate on the bottom cylinder mesh with each other.

[0008] Furthermore, the present invention also provides a construction method for an integrated lifting quick-connect tower suitable for offshore wind power as described above, which includes the following steps: Step S1: In the initial state, the top cylinder is hoisted to the preset position on the installation vessel using hoisting equipment and placed vertically. Step S2: After the top cylinder is placed, the middle cylinder is fitted onto the outside of the top cylinder and the bottom cylinder is fitted onto the outside of the middle cylinder in sequence, so that the middle cylinder and the bottom cylinder are placed vertically. At this time, the tower is in a contracted state, with the body of the top cylinder inside the middle cylinder and the body of the middle cylinder inside the bottom cylinder. Step S3: The retracted tower is hoisted and installed on the existing wind turbine tower foundation on the installation vessel. The bottom bolt holes on the bottom side of the bottom cylinder are bolted to the wind turbine tower foundation, so that the bottom cylinder is fixed on the wind turbine tower foundation. At the same time, the top bolt holes on the top side of the top cylinder are bolted to the wind turbine unit, thus forming the wind turbine assembly. Step S4: Transport the wind turbine as a whole to the preset location where it needs to be installed using the installation vessel; Step S5: Secure the upper side of the top cylinder using the lifting frame on the transport ship, allowing the wind turbine tower foundation, middle cylinder, and bottom cylinder to slowly sink together until the first inner hook lock on the inner side of the middle cylinder and the second inner hook lock on the inner side of the bottom cylinder respectively hook into the bottom of the top cylinder and the bottom of the middle cylinder. At this point, the tower forms a self-locking unfolded shape. Then, slowly lower the wind turbine tower foundation installed at the bottom of the tower into the seabed foundation using the lifting frame on the transport ship, completing the construction operation.

[0009] As can be seen from the technical solution provided by the present invention above, compared with the prior art, the present invention provides an integrated lifting quick-connect tower and construction method suitable for offshore wind power. The design is scientific. The integrated lifting quick-connect tower serves as the support structure for offshore wind turbines (i.e., offshore wind turbine generator sets, i.e., wind turbine units). When transported together with the offshore wind turbine by the installation vessel, the tower can be in a contracted state with a lower center of gravity, effectively reducing the probability of the overall structure undergoing pitching, rolling, and other movements. After being transported to the designated location, the wind turbine tower is extended and installed in place, effectively avoiding the risk of overturning of the tower and the wind turbine installed on it, which has significant practical significance.

[0010] Furthermore, by setting internal hook locks (including a first internal hook lock and a second internal hook lock) on the inner side of the tower, the tower can be self-locked into place by the internal structure of the device when it is unfolded, without the need for manual assistance in docking, which significantly reduces the cost and risk of wind turbine installation and improves the efficiency of installation work. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall structure of an integrated lifting quick-connect tower suitable for offshore wind power provided by the present invention; Figure 2 A front view of the overall structure of an integrated lifting quick-connect tower suitable for offshore wind power provided by the present invention; Figure 3 A top view of the overall structure of an integrated lifting quick-connect tower suitable for offshore wind power provided by the present invention; Figure 4 A cross-sectional view of the overall structure of an integrated lifting quick-connect tower suitable for offshore wind power provided by the present invention; Figure 5a for Figure 4 An enlarged schematic diagram of part A1 shown; Figure 5b for Figure 4 An enlarged schematic diagram of part A2 shown; Figure 6a A three-dimensional structural diagram of the middle cylinder of an integrated lifting quick-connect tower suitable for offshore wind power provided by the present invention. Figure 6b for Figure 6a Enlarged schematic diagram of the upper part of the structure shown; Figure 7 This is a side view of the middle tube; Figure 8 A three-dimensional structural diagram of the top cylinder structure in an integrated lifting quick-connect tower suitable for offshore wind power provided by the present invention; Figure 9aA schematic diagram of the three-dimensional structure of the bottom cylinder in an integrated lifting quick-connection tower suitable for offshore wind power provided by the present invention. Figure 1 ; Figure 9b for Figure 9a Enlarged schematic diagram of the upper part of the structure shown; Figure 10 A schematic diagram of the three-dimensional structure of the bottom cylinder in an integrated lifting quick-connection tower suitable for offshore wind power provided by the present invention. Figure 2 ; Figure 11 This invention provides a three-dimensional structural diagram of an integrated lifting quick-connect tower suitable for offshore wind power, with its overall structure in a retracted state. Figure 12 A cross-sectional view of an integrated lifting quick-connect tower suitable for offshore wind power provided by the present invention when its overall structure is in a retracted state. Figure 13 for Figure 12 An enlarged schematic diagram of part B shown; Figure 14 This is a schematic diagram of the three-dimensional structure of the upper half of the middle cylinder after it has been partially cut open. Figure 15 This is a schematic diagram showing the installation state of the first cylinder bottom tooth plate and the first cylinder inner hook lock inside the middle cylinder; in this invention, the installation state of the second cylinder bottom tooth plate and the second cylinder inner hook lock inside the bottom cylinder is also basically the same. Figure 16 As shown, the only difference is the size of the components, which will be adjusted accordingly based on the docking requirements; Figure 16 The diagram illustrates the engagement state of the first cylinder bottom toothed plate on the top cylinder and the first cylinder top toothed plate on the middle cylinder, as well as the state where a portion of the first cylinder inner hook on the middle cylinder engages with the bottom of the top cylinder, when the tower is in its deployed state. In this invention, the engagement state of the second cylinder bottom toothed plate on the middle cylinder and the second cylinder top toothed plate on the bottom cylinder, as well as the state where the second cylinder inner hook on the bottom cylinder engages with the bottom of the middle cylinder, are also essentially the same. Figure 16 They are the same, only the size of the parts differs, and adjustments will be made according to the docking requirements; Figure 17 This is a schematic diagram showing the first cylinder bottom toothed plate on the top cylinder and the first cylinder top toothed plate on the middle cylinder in a non-meshing state; in this invention, the non-meshing state of the second cylinder bottom toothed plate on the middle cylinder and the second cylinder top toothed plate on the bottom cylinder is also basically as shown. Figure 17 As shown, the only difference is the size of the components, which will be adjusted accordingly based on the docking requirements; Figure 18 This is a schematic diagram showing the meshing state of the first bottom toothed plate on the top cylinder and the first top toothed plate on the middle cylinder. The meshing state of the second bottom toothed plate on the middle cylinder and the second top toothed plate on the bottom cylinder is basically the same. Figure 18As shown, the only difference is the size of the components; Figure 19 This is a schematic diagram of the structure of a first-cylinder internal hook lock. The first-cylinder internal hook lock and the second-cylinder internal hook lock have the same shape and structure, only their sizes are different. In the diagram, 1-top cylinder; 2-middle cylinder; 3-bottom cylinder; 4-top screw hole; 51-first bottom toothed plate; 52-second bottom toothed plate; 61-first toothed plate screw hole; 62-second toothed plate screw hole; 71-First bolt; 72-Second bolt; 81-First cylinder inner hook lock; 82-Second cylinder inner hook lock; 91-First cylinder top toothed plate; 92-Second cylinder top toothed plate; 101-First spring; 102-Second spring; 11- Bottom screw hole of cylinder; 121- First side screw hole of cylinder; 122- Second side screw hole of cylinder. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0014] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0016] The technical solution of the present invention will be further described below through specific embodiments. Details not specified in the embodiments are all conventional technologies in the industry.

[0017] See Figures 1 to 4 , Figures 5a to 5b , Figures 6a to 6b , Figures 7 to 8 , Figures 9a to 9b , Figures 10 to 19 The present invention provides an integrated lifting quick-connect tower suitable for offshore wind power, comprising a top cylinder 1, a middle cylinder 2 and a bottom cylinder 3; The top cylinder 1, middle cylinder 2, and bottom cylinder 3 are all vertically distributed, hollow structures; A middle cylinder 2 is provided inside the bottom cylinder 3; A top cylinder 1 is provided on the inner side of the middle cylinder 2; In this invention, specifically, the top cylinder 1, the middle cylinder 2, and the bottom cylinder 3 are all structures with openings at both the top and bottom ends, meaning that the top and bottom surfaces are not sealed.

[0018] In this invention, specifically, the diameter of the bottom cylinder 3 is larger than the diameter of the middle cylinder 2, and the diameter of the middle cylinder 2 is larger than the diameter of the top cylinder 1. The top cylinder 1, middle cylinder 2, and bottom cylinder 3 have the same wall thickness.

[0019] In this invention, the cross-sectional shape of the top cylinder 1, the middle cylinder 2, and the bottom cylinder 3 is annular; The outer diameters of the top cylinder 1, the middle cylinder 2, and the bottom cylinder 3 gradually increase from top to bottom.

[0020] It should be noted that in this invention, the bottom cylinder 3, the middle cylinder 2 and the top cylinder 1 are vertically assembled and arranged in a "lower sleeve connecting to the upper" manner. The diameter of the bottom cylinder 3 is larger than the diameter of the middle cylinder 2, the diameter of the middle cylinder 2 is larger than the diameter of the top cylinder 1, and all cylinders have the same wall thickness. For the tower of the present invention, when the tower is in a contracted state, the body of the top cylinder 1 can be contracted into the middle cylinder 2, and the body of the middle cylinder 2 can be extended into the bottom cylinder 3, so that the entire tower can be contracted to a shorter state, significantly reducing the center of gravity of the tower, avoiding the structure from exceeding the limits of longitudinal and lateral swaying during the transport stage, and effectively avoiding safety risks.

[0021] It should be noted that in this invention, the tower is in a contracted state, that is: the lower bottom surface of the top cylinder 1 is located at the lower part of the middle cylinder 2, the lower bottom surface of the middle cylinder 2 is located at the bottom surface of the bottom cylinder 3, the top cylinder 1, the middle cylinder 2 and the bottom cylinder 3 no longer move downward under the action of gravity, and the middle cylinder 2 is provided inside the bottom cylinder 3 and the top cylinder 1 is provided inside the middle cylinder 2.

[0022] It should be noted that in this invention, the screw hole 4 at the top of the cylinder, the toothed plate 5 at the bottom of the cylinder, the screw hole 6 on the toothed plate, the bolt 7, the hook lock inside the cylinder 8, the toothed plate 9 at the top of the cylinder, and the screw hole 12 on the side of the cylinder are all the same in terms of structure, except for the size difference.

[0023] In this invention, for specific implementation, see [link to relevant documentation]. Figure 3 As shown, the top of the top cylinder 1 is provided with a plurality of cylinder top screw holes 4 arranged at equal intervals along the circumference; The screw hole 4 on the top of the cylinder is used to connect to the external fan by bolts.

[0024] It should be noted that, see Figure 3 As shown, the screw holes 4 on the top of the cylinder are located on the upper side of the top cylinder 1 and are evenly distributed along the circumference of the top of the cylinder. They are used to connect to the external wind turbine (i.e., offshore wind turbine generator set, i.e. wind turbine unit) by bolts.

[0025] In this invention, for specific implementation, see [link to relevant documentation]. Figures 1 to 3 As shown, when the tower is in the extended position (i.e., unfolded) state, the lower part of the top cylinder 1 and the upper part of the middle cylinder 2 are connected by the first bolt 71, and the lower part of the middle cylinder 2 and the upper part of the bottom cylinder 3 are connected by the second bolt 71.

[0026] It should be noted that in this invention, the tower is in the extended (i.e., unfolded) state, that is: the top cylinder 1 is fixed at a constant height by hoisting facilities (such as the original hoisting frame on the installation ship), the middle cylinder 2 and the bottom cylinder 3 connected to the wind turbine tower foundation are slowly lowered, so that the first inner cylinder hook lock 81 on the inner side of the middle cylinder 2 and the second inner cylinder hook lock 8 on the inner side of the bottom cylinder 3 respectively hook onto the bottom of the top cylinder 1 and the bottom of the middle cylinder 2. At this time, the top cylinder 1, the middle cylinder 2 and the bottom cylinder 3 can no longer move relative to each other.

[0027] For specific implementation details, see [link to implementation details]. Figure 6a , Figure 6b , Figures 7 to 8 As shown, the lower part of the top cylinder 1 and the upper part of the middle cylinder 2 are connected by the first bolt 71. The specific structural design is as follows: The lower part of the top cylinder 1 has multiple first cylinder bottom tooth plates 51 distributed at equal intervals along the circumference; The first bottom toothed plate 51 is arranged perpendicular to the horizontal plane and distributed radially along the top cylinder 1; Two first toothed plate screw holes 61 are provided on the outer side of the first cylinder bottom toothed plate 51, which are spaced apart vertically. On the upper part of the cylinder wall of the middle cylinder 2, there are multiple pairs of first cylinder side screw holes distributed at equal intervals along the circumference; Each pair of first cylinder side screw holes includes two first cylinder side screw holes 121 distributed at an upper and lower interval; Among them, the first toothed plate screw hole 61 on the first cylinder bottom toothed plate 51 at the lower part of the top cylinder 1 is correspondingly provided with the first cylinder side screw hole 121 at the upper part of the middle cylinder 2; The first cylinder side screw hole 121 is located on the outer side of the first toothed plate screw hole 61; The first bolt 71 passes through the first cylinder side screw hole 121 and the first toothed plate screw hole 61 from the outside to the inside, and is threadedly fixed to the first cylinder side screw hole 121 and the first toothed plate screw hole 61.

[0028] For specific implementation details, see [link to implementation details]. Figure 6a , Figure 6b , Figure 7 As shown in Figure 9, the lower part of the middle cylinder 2 and the upper part of the bottom cylinder 3 are connected by the second bolt 71. The specific structural design is as follows: The lower part of the cylinder wall of the middle cylinder 2 has multiple second cylinder bottom tooth plates 52 distributed at equal intervals along the circumference; The second cylinder bottom toothed plate 52 is arranged perpendicular to the horizontal plane and distributed radially along the middle cylinder 2; Two second toothed plate screw holes 62 are provided on the outer side of the second cylinder bottom toothed plate 52, which are spaced apart vertically. On the upper part of the bottom cylinder 3, there are multiple pairs of second cylinder side screw holes distributed at equal intervals along the circumference; Each pair of second cylinder side screw holes includes two second cylinder side screw holes 122 distributed at an upper and lower interval; Among them, the second toothed plate screw hole 62 on the second bottom toothed plate 52 at the lower part of the middle cylinder 2 is correspondingly provided with the second cylinder side screw hole 122 at the upper part of the bottom cylinder 3; The second cylinder side screw hole 122 is located on the outer side of the second toothed plate screw hole 62; The second bolt 72 passes through the corresponding second cylinder side screw hole 122 and second toothed plate screw hole 62 from the outside to the inside, and is threadedly fixed to the second cylinder side screw hole 122 and the second toothed plate screw hole 62.

[0029] It should be noted that, see Figure 6a , Figure 6b , Figure 7 As shown in Figure 9, multiple first cylinder bottom toothed plates 51 and multiple second cylinder bottom toothed plates 52 are located at the lower part of the top cylinder 1 and the middle cylinder 2, arranged in a circumferential direction and fixed to the cylinder wall, and arranged perpendicular to the horizontal plane.

[0030] It should be noted that, see Figure 6a , Figure 6b , Figures 7 to 8As shown, the first toothed plate screw hole and the second toothed plate screw hole are located on the outer side of the first cylinder bottom toothed plate 51 and the second cylinder bottom toothed plate 52, respectively, arranged radially outward along the cylinder wall, with one on the top and one on the bottom; the toothed plate screw hole is used to insert bolts after docking with the cylinder side screw hole, so that the two cylinders on the top and bottom sides are fixedly connected to each other.

[0031] It should be noted that, see Figure 3 , Figures 5a to 5b , Figure 6a , Figure 6b , Figure 7 As shown in Figure 9, the first bolt 71 and the second bolt 772 are located on the outer side of the tower wall, distributed circumferentially and corresponding one-to-one with the first cylinder side screw hole and the second cylinder side screw hole. When the tower is in the unfolded state and the hook lock of the first cylinder is hooked to the bottom side of the top cylinder 1 and the hook lock of the second cylinder is hooked to the bottom side of the middle cylinder 2 (see below), the first cylinder side screw hole and the second cylinder side screw hole can correspond one-to-one with the first toothed plate screw hole and the second toothed plate screw hole.

[0032] In this invention, for specific implementation, see [link to relevant documentation]. Figures 3 to 4 , Figures 5a to 5b , Figure 6a , Figure 6b , Figure 7 As shown, multiple first cylinder top toothed plates 91 are arranged at equal intervals around the inner side of the top of the middle cylinder 2; A first cylinder inner hook lock 81 is provided at a position between any two adjacent first cylinder top tooth plates 91 and is hinged (i.e. rotatably connected) to the upper end of the first cylinder inner hook lock 81. The first inner hook lock 81 is used to hook the bottom of the top cylinder 1 when the tower cylinder is in the extended position.

[0033] In specific implementation, the lower end of the first inner cylinder hook lock 81 has a first hook portion 810 protruding inward; When the tower is in the extended position (i.e., the unfolded state), the top surface of the first hook 810 is horizontal and in contact with the bottom of the top cylinder 1 (i.e., the cylinder wall). The first hook 810 is used to hook the bottom of the top cylinder 1 (i.e., the cylinder wall) when the tower is in the extended position.

[0034] In practice, the diameter of the central through hole on the top panel of the middle cylinder 2 is smaller than the sum of the outer diameter of the lower cylinder of the top cylinder 1 and the maximum radial length of the two first bottom toothed plates 51 located at the bottom of the top cylinder 1. Therefore, when the top cylinder 1 moves in opposite directions to the middle cylinder 2 (i.e., relatively unfolds, for example, the middle cylinder 2 moves downward relative to the top cylinder 1), the top cylinder 1 will not disengage from the middle cylinder 2. It can be limited by the two first bottom toothed plates 51 at the bottom of the top cylinder 1 and cannot detach from the central through hole on the top panel of the middle cylinder 2.

[0035] In specific implementation, the lower middle part of each first cylinder hook lock 81 is connected to the inner side of the cylinder wall of the middle cylinder 2 by a first spring 101; The elastic force of the first spring 101 is distributed along the radial direction of the middle cylinder 2 in the tower.

[0036] In practice, when the tower is in the extended position, the gap between any two adjacent first cylinder inner hook locks 81 is used to accommodate the first cylinder bottom tooth plate 51 of the lower part of the top cylinder 2.

[0037] It should be noted that, see Figure 5a , Figure 13 As shown, the first spring 101 is fixed between the first inner cylinder hook lock 81 and the inner wall of the middle cylinder 2, and is arranged in a circumferential direction like the first inner cylinder hook lock 81; the elastic force of the first spring 101 is distributed in the radial direction of the middle cylinder 2 in the tower; the first spring 101 can apply an inward elastic force to the first inner cylinder hook lock 81 in the radial direction of the tower, so that the first inner cylinder hook lock 81 hooks onto the top cylinder 1 above after the tower extends into place.

[0038] In this invention, for specific implementation, see [link to relevant documentation]. Figure 3 As shown in Figure 9, multiple equally spaced second cylinder top tooth plates 92 are arranged around the inner side of the top of the bottom cylinder 3. A second cylinder inner hook lock 82 is provided at a position between any two adjacent second cylinder top tooth plates 92 and is hinged (i.e. rotatably connected) to the upper end of the second cylinder inner hook lock 82. The second inner cylinder hook lock 82 is used to hook the bottom of the cylinder body (i.e., cylinder wall) of the middle cylinder 2 when the tower cylinder is in the extended position.

[0039] In practice, the diameter of the central through hole on the top panel of the bottom cylinder 3 is smaller than the sum of the outer diameter of the lower part of the middle cylinder 2 and the maximum radial length of the two second cylinder bottom tooth plates 52 located at the lower part of the middle cylinder 2. Therefore, when the middle cylinder 2 moves in opposite directions to the bottom cylinder 3 (i.e., relatively unfolds, for example, the bottom cylinder 3 moves downward relative to the middle cylinder 2), the middle cylinder 2 will not disengage from the bottom cylinder 3. It can be limited by the two second cylinder bottom tooth plates 52 at the lower part of the middle cylinder 2 and cannot detach from the central through hole of the second cylinder top tooth plate 92 on the top panel of the bottom cylinder 3.

[0040] In specific implementation, the lower end of the inner hook lock 82 of the second cylinder has a second hook portion 820 that protrudes inward; When the tower is in the extended position (i.e., the unfolded state), the top surface of the second hook 820 is horizontal and in contact with the bottom of the middle cylinder 2. The second hook 820 is used to hook the bottom of the cylinder body (i.e., cylinder wall) of the middle cylinder 2 when the tower is in the extended state.

[0041] In practice, the lower middle part of each second cylinder hook lock 82 is connected to the inner wall of the bottom cylinder 3 by a second spring 102. The elastic force of the second spring 102 is distributed radially along the bottom cylinder 3 in the tower.

[0042] In practice, when the tower is in the extended position, the gap between any two adjacent second cylinder inner hook locks 82 is used to accommodate the second cylinder bottom tooth plate 52 of the lower part of the middle cylinder 2.

[0043] It should be noted that, see Figure 5b , Figure 13 As shown, the second spring 102 is fixed between the inner wall of the second cylinder hook 82 and the inner side of the bottom cylinder 3, and is arranged in a circumferential direction like the second cylinder hook 82; the elastic force of the second spring 102 is distributed in the radial direction of the bottom cylinder 3 in the tower; the second spring 102 can apply an inward elastic force along the radial direction of the tower to the second cylinder hook 82, so that the second cylinder hook 82 hooks onto the upper middle cylinder 2 after the tower extends into place.

[0044] It should be noted that, see Figures 3 to 4 , Figures 5a to 5b , Figure 6a , Figure 6b , Figure 7 As shown in Figure 9, the first cylinder inner hook lock 81 and the second cylinder inner hook lock 82 are respectively provided on the upper inner side of the middle cylinder 2 and the bottom cylinder 3, and are distributed circumferentially inside the cylinder (distributed circumferentially along the tower cylinder); the upper ends of the first cylinder inner hook lock 81 and the second cylinder inner hook lock 82 are respectively hinged to the first cylinder top tooth plate 91 and the second cylinder top tooth plate 92, and are arranged vertically, and the lower sides of the first cylinder inner hook lock 81 and the second cylinder inner hook lock 82 can rotate radially along the tower cylinder; after the tower cylinder is extended to the position, the first hook part 810 on the inner side of the first cylinder inner hook lock 81 and the second hook part 820 on the inner side of the second cylinder inner hook lock 82 can respectively hook the bottom of the top cylinder 1 and the bottom of the middle cylinder 2, forming a self-locking structure.

[0045] In this invention, specifically, the bottom of the bottom cylinder 3 has a plurality of bottom screw holes 11 distributed at equal intervals along the circumference; the bottom screw holes 11 are used to connect to the wind turbine tower foundation located on the outside by bolts.

[0046] It should be noted that, see Figure 10 The bottom screw hole 11 is located only on the bottom side of the bottom cylinder 3 and is arranged circumferentially along the cylinder wall; the bottom screw hole 11 is used to connect with the wind turbine tower foundation located on the outside.

[0047] Compared with existing technologies, the integrated lifting quick-connect tower for offshore wind power provided by this invention has the following beneficial technical effects: 1. In this invention, by setting the inner cylinder hook lock (including the first inner cylinder hook lock and the second inner cylinder hook lock) on the inner side of the tower, the tower can be self-locked into place by the internal structure of the device when it is unfolded, without the need for manual auxiliary docking, which significantly reduces the wind turbine installation cost and risk and improves the installation efficiency.

[0048] 2. In this invention, by further providing bolt holes on the cylinder side, each tower cylinder can be further fixed by bolts, thereby further enhancing the structural stability and rigidity and effectively coping with environments such as strong winds and waves and heavy loads at sea.

[0049] 3. In this invention, by setting a bottom toothed plate and a top toothed plate (specifically, a first bottom toothed plate 51 set on the top cylinder 1 and a first top toothed plate 91 set on the middle cylinder 2, and a second bottom toothed plate 52 set on the middle cylinder 2 and a second top toothed plate 92 set on the bottom cylinder 3), the bottom toothed plate and the top toothed plate can mesh with each other when the tower is extended (i.e., the tower is in the unfolded state), automatically aligning the screw holes on the cylinder side with the screw holes on the toothed plates, effectively reducing the installation time of the overall structure, lowering the installation cost, and improving the installation efficiency.

[0050] It should be noted that, in this invention, the first cylinder top toothed plate 91 of the middle cylinder 2 and the second cylinder top toothed plate 92 of the bottom cylinder 3 are identical in shape and structure, except for their size. Similarly, the first cylinder inner hook lock 81 on the inner side of the middle cylinder 2 and the second cylinder inner hook lock 82 on the inner side of the bottom cylinder 3 are identical in shape and structure, except for their size.

[0051] In this invention, the meshing of the top toothed plate and the bottom toothed plate means that the top toothed plate and the bottom toothed plate between two adjacent cylinders are in a meshing state. At this time, the top toothed plate and the bottom toothed plate are in contact with each other (that is, the first bottom toothed plate 51 provided on the top cylinder 1 and the first top toothed plate 91 provided on the middle cylinder 2 are in contact with each other, and the second bottom toothed plate 52 provided on the middle cylinder 2 and the second top toothed plate 92 provided on the bottom cylinder 3 are in contact with each other). The first inner hook lock 81 inside the middle cylinder 2 just hooks the bottom of the top cylinder 1, and the second inner hook lock 82 inside the bottom cylinder 3 just hooks the bottom of the middle cylinder 2. Specifically, the bottom toothed plate and the top toothed plate between two adjacent cylinders are in a meshing state, as detailed below: See Figure 16 , Figure 18 As shown, when the tower is in the extended position (i.e., unfolded) state, the first bottom toothed plate 51 on the top cylinder 1 and the first top toothed plate 91 on the middle cylinder 2 are engaged with each other, as are the second bottom toothed plate 52 on the middle cylinder 2 and the second top toothed plate 92 on the bottom cylinder 3, and are in an engaged state.

[0052] It should be noted that in this invention, during the tower extension process, when the top cylinder 1 and the first cylinder bottom tooth plate 51 on it rise together, the first cylinder bottom tooth plate 51 will automatically engage with the middle position of the two first cylinder inner hook locks 81 of the middle cylinder 2 and contact each other with the first cylinder top tooth plate 91 provided on the middle cylinder 2. As the top cylinder 1 continues to rise, the first cylinder inner hook lock 81 inside the middle cylinder 2 will hook onto the bottom of the top cylinder 1.

[0053] Similarly, during the tower extension process, when the middle cylinder 2 and the second cylinder bottom tooth plate 52 on it rise together, the second cylinder bottom tooth plate 52 will automatically engage with the middle position of the two second cylinder inner hook locks 82 of the bottom cylinder 3 and contact each other with the second cylinder top tooth plate 92 set on the bottom cylinder 3. As the middle cylinder 2 continues to rise, the second cylinder inner hook lock 82 inside the bottom cylinder 3 will hook onto the bottom of the middle cylinder 2.

[0054] In this invention, there can theoretically be N middle cylinders 2 (N is a natural number greater than or equal to 1). Due to the limited representation, this invention only draws one middle cylinder 2 to distinguish it from the top cylinder 1 and the bottom cylinder 3.

[0055] It should be noted that when the integrated lifting quick tower of the present invention includes multiple middle cylinders 2, if the tower is in the extended position (i.e., unfolded) state, then for any two adjacent middle cylinders 2, the bottom toothed plate (i.e., the second bottom toothed plate 52) at the lower part of the upper middle cylinder 2 and the top toothed plate (i.e., the first top toothed plate 91) at the upper part of the lower middle cylinder 2 are engaged, and the inner hook lock (i.e., the first inner hook lock 81) of the lower middle cylinder 2 will hook onto the bottom of the upper middle cylinder 2.

[0056] Furthermore, this invention also provides a construction method for an integrated lifting quick-connect tower suitable for offshore wind power, based on the aforementioned integrated lifting quick-connect tower for offshore wind power. This method includes the following steps: Step S1: In the initial state, the top cylinder 1 is hoisted to the preset position on the installation vessel by the hoisting equipment and placed vertically. Step S2: After the top cylinder 1 is placed, the middle cylinder 2 is fitted onto the outside of the top cylinder 1 and the bottom cylinder 3 is fitted onto the outside of the middle cylinder 2 in sequence, so that the middle cylinder 2 and the bottom cylinder 3 are placed vertically. At this time, the tower is in a contracted state, the cylinder body (i.e., the cylinder body) of the top cylinder 1 is located inside the middle cylinder 2, and the cylinder body (i.e., the cylinder body) of the middle cylinder 2 is located inside the bottom cylinder 3. In this invention, see Figure 19 As shown, the inner surfaces of the first hook portion 810 of the first inner cylinder hook lock 81 in the middle cylinder 2 and the second hook portion 820 of the second inner cylinder hook lock 82 in the bottom cylinder 3 are inclined, smooth planes, and the height of the plane gradually increases from the outside to the inside.

[0057] It should be noted that, in this invention, the first hook portion 810 of the first inner cylinder hook lock 81 and the second hook portion 820 of the second inner cylinder hook lock 82 are configured as follows: Figure 19 As shown, during the process of fitting the middle cylinder 2 onto the outside of the top cylinder 1, the lower end of the pointed bevel of the first hook portion 810 of the first inner cylinder hook lock 81 inside the middle cylinder 2 will first contact the side of the top of the top cylinder 1, causing the first inner cylinder hook lock 81 to slide to the side of the cylinder. Similarly, during the process of fitting the bottom cylinder 3 onto the outside of the middle cylinder 2, the lower end of the pointed bevel of the second hook portion 820 of the second inner cylinder hook lock 82 inside the bottom cylinder 3 will first contact the side of the top of the middle cylinder 2, causing the second inner cylinder hook lock 82 to slide to the side of the cylinder, thus completing the installation.

[0058] Step S3: The entire tower in its retracted state is hoisted and installed on the existing wind turbine tower foundation on the installation vessel (e.g., using a crane or hoisting frame already on the installation vessel). The bottom bolt hole 11 on the lower side of the bottom cylinder 3 is bolted to the wind turbine tower foundation, thus fixing the bottom cylinder 3 to the wind turbine tower foundation. At the same time, the top bolt hole 4 on the upper side of the top cylinder 1 is bolted to the wind turbine unit, thus forming the entire wind turbine. Step S4: Transport the wind turbine as a whole to the preset location where the wind turbine needs to be installed (i.e., the seabed location where the wind turbine needs to be installed) by the installation vessel. It should be noted that the installation vessel is a technologically mature floating vessel. By using the existing floating vessel and the tugboat used to pull the floating vessel, the wind turbine can be placed on the floating vessel as a whole and floated together.

[0059] In step S5, the upper side of the top cylinder 1 is fixed by the hoisting frame on the transport ship, so that the wind turbine tower foundation, the middle cylinder 2 and the bottom cylinder 3 are slowly lowered together until the first inner cylinder hook lock 81 on the inner side of the middle cylinder 2 and the second inner cylinder hook lock 8 on the inner side of the bottom cylinder 3 respectively hook into the bottom of the top cylinder 1 and the bottom of the middle cylinder 2. At this time, the tower (i.e. the wind turbine tower) forms a self-locking unfolded shape. Then, the wind turbine tower foundation installed at the bottom of the tower (i.e. the lifting quick-connect tower of the present invention) is slowly lowered into the seabed foundation by the hoisting frame on the transport ship, thus completing the construction operation.

[0060] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An integrated, quick-connect, lifting tower suitable for offshore wind power, characterized in that, It includes a top cylinder (1), a middle cylinder (2), and a bottom cylinder (3); The top cylinder (1), middle cylinder (2) and bottom cylinder (3) are all vertically distributed, hollow structures; A middle cylinder (2) is provided inside the bottom cylinder (3); a top cylinder (1) is provided inside the middle cylinder (2); Multiple first cylinder top tooth plates (91) are arranged equidistantly around the inner side of the top of the middle cylinder (2). A first cylinder inner hook lock (81) is provided at a position between any two adjacent first cylinder top tooth plates (91) and is hinged to the upper end of the first cylinder inner hook lock (81); The first inner hook lock (81) is used to hook the bottom of the top cylinder (1) when the tower cylinder is in the extended position; Multiple equally spaced second cylinder top tooth plates (92) are arranged around the inner side of the top of the bottom cylinder (3). A second cylinder inner hook lock (82) is provided at a position between any two adjacent second cylinder top tooth plates (92) and is hinged to the upper end of the second cylinder inner hook lock (82); The second inner hook lock (82) is used to hook the bottom of the middle cylinder (2) when the tower is in the extended position; The lower part of the top cylinder (1) has multiple first cylinder bottom tooth plates (51) distributed at equal intervals along the circumference. When the tower is in the extended position, the first bottom toothed plate (51) on the top cylinder (1) and the first top toothed plate (91) on the middle cylinder (2) mesh with each other; The lower part of the cylinder wall of the middle cylinder (2) has multiple second cylinder bottom tooth plates (52) distributed at equal intervals along the circumference. When the tower is in the extended position, the second bottom toothed plate (52) on the middle cylinder (2) and the second top toothed plate (92) on the bottom cylinder (3) mesh with each other.

2. The integrated lifting quick-connect tower for offshore wind power as described in claim 1, characterized in that, The top cylinder (1), the middle cylinder (2) and the bottom cylinder (3) are all open at both the top and bottom ends; The diameter of the bottom cylinder (3) is larger than that of the middle cylinder (2), and the diameter of the middle cylinder (2) is larger than that of the top cylinder (1); The top cylinder (1), middle cylinder (2) and bottom cylinder (3) have the same wall thickness.

3. The integrated lifting quick-connect tower for offshore wind power as described in claim 1, characterized in that, The top of the top cylinder (1) is provided with multiple cylinder top screw holes (4) at equal intervals along the circumference. The screw hole (4) on the top of the cylinder is used to connect to the external fan by bolts; The bottom of the bottom cylinder (3) has multiple bottom screw holes (11) evenly distributed along the circumference. The bottom bolt hole (11) is used to connect to the wind turbine tower foundation located on the outside by bolts.

4. The integrated lifting quick-connect tower for offshore wind power as described in claim 1, characterized in that, When the tower is in the extended position, the lower part of the top cylinder (1) and the upper part of the middle cylinder (2) are connected by the first bolt (71), and the lower part of the middle cylinder (2) and the upper part of the bottom cylinder (3) are connected by the second bolt (71).

5. The integrated lifting quick-connect tower for offshore wind power as described in claim 4, characterized in that, The lower part of the top cylinder (1) and the upper part of the middle cylinder (2) are connected by the first bolt (71). The specific structural design is as follows: The first cylinder bottom tooth plate (51) is arranged perpendicular to the horizontal plane and distributed radially along the top cylinder (1); Two first toothed plate screw holes (61) are provided on the outer side of the first cylinder bottom toothed plate (51) at intervals. On the upper part of the cylinder wall of the middle cylinder (2), there are multiple pairs of first cylinder side screw holes distributed at equal intervals along the circumference; Each pair of first cylinder side screw holes includes two first cylinder side screw holes (121) distributed at an upper and lower interval. Among them, the first toothed plate screw hole (61) on the first cylinder bottom toothed plate (51) at the lower part of the top cylinder (1) is correspondingly set with the first cylinder side screw hole (121) at the upper part of the middle cylinder (2); The first cylinder side screw hole (121) is located on the outer side of the first toothed plate screw hole (61); The first bolt (71) passes through the first cylinder side screw hole (121) and the first toothed plate screw hole (61) from the outside to the inside, and is threadedly fixed to the first cylinder side screw hole (121) and the first toothed plate screw hole (61).

6. The integrated lifting quick-connect tower for offshore wind power as described in claim 4, characterized in that, The lower part of the middle cylinder (2) and the upper part of the bottom cylinder (3) are connected by the second bolt (71). The specific structural design is as follows: The second cylinder bottom toothed plate (52) is arranged perpendicular to the horizontal plane and distributed radially along the middle cylinder (2); Two second toothed plate screw holes (62) are provided on the outer side of the second bottom toothed plate (52) at intervals. On the upper part of the bottom cylinder (3), there are multiple pairs of second cylinder side screw holes distributed at equal intervals along the circumference; Each pair of second cylinder side screw holes includes two second cylinder side screw holes (122) distributed at an upper and lower interval. Among them, the second toothed plate screw hole (62) on the second bottom toothed plate (52) at the lower part of the middle cylinder (2) is correspondingly set with the second side screw hole (122) at the upper part of the bottom cylinder (3); The second cylinder side screw hole (122) is located on the outer side of the second toothed plate screw hole (62); The second bolt (72) passes through the corresponding second cylinder side screw hole (122) and second tooth plate screw hole (62) from the outside to the inside, and is threadedly fixed to the second cylinder side screw hole (122) and the second tooth plate screw hole (62).

7. The integrated lifting quick-connect tower for offshore wind power as described in claim 1, characterized in that, The lower end of the first inner cylinder hook lock (81) has a first hook portion (810) protruding inward. When the tower is in the extended position, the top surface of the first hook (810) is horizontal and in contact with the bottom of the top cylinder (1); The first hook (810) is used to hook the bottom of the top cylinder (1) when the tower is in the extended position.

8. The integrated lifting quick-connect tower for offshore wind power as described in claim 7, characterized in that, The lower end of the second inner cylinder hook lock (82) has a second hook portion (820) protruding inward. When the tower is in the extended position, the top surface of the second hook (820) is horizontal and in contact with the bottom of the middle cylinder (2); The second hook (820) is used to hook the bottom of the middle cylinder (2) when the tower is in the extended position.

9. The integrated lifting quick-connect tower for offshore wind power as described in claim 8, characterized in that, The lower middle part of each first cylinder hook lock (81) is connected to the inner side of the cylinder wall of the middle cylinder (2) by a first spring (101); The elastic force of the first spring (101) is distributed radially along the middle cylinder (2) in the tower. The lower middle part of each second cylinder hook lock (82) is connected to the inner wall of the bottom cylinder (3) by a second spring (102); The elastic force of the second spring (102) is distributed radially along the bottom cylinder (3) in the tower.

10. A construction method for an integrated lifting quick-connect tower suitable for offshore wind power as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Step S1: In the initial state, the top cylinder (1) is hoisted to the preset position on the installation vessel by the hoisting equipment and placed vertically. Step S2: After the top cylinder 1 is placed, the middle cylinder (2) is fitted on the outside of the top cylinder (1) and the bottom cylinder (3) is fitted on the outside of the middle cylinder (2) in sequence, so that the middle cylinder (2) and the bottom cylinder (3) are placed vertically. At this time, the tower is in a contracted state, the body of the top cylinder (1) is inside the middle cylinder (2), and the body of the middle cylinder (2) is inside the bottom cylinder (3). Step S3: The entire tower in the retracted state is hoisted and installed on the existing wind turbine tower foundation on the installation vessel. The bottom screw hole (11) on the lower side of the bottom cylinder (3) is bolted to the wind turbine tower foundation, so that the bottom cylinder (3) is fixed on the wind turbine tower foundation. At the same time, the top screw hole (4) on the upper side of the top cylinder (1) is bolted to the wind turbine unit, thus forming the entire wind turbine. Step S4: Transport the wind turbine as a whole to the preset location where it needs to be installed using the installation vessel; Step S5: Fix the upper side of the top cylinder (1) with the hoisting frame on the transport ship, so that the wind turbine tower foundation, the middle cylinder (2) and the bottom cylinder (3) sink slowly together until the first inner hook lock (81) on the inner side of the middle cylinder (2) and the second inner hook lock (8) on the inner side of the bottom cylinder (3) hook onto the bottom of the top cylinder (1) and the bottom of the middle cylinder (2) respectively. At this time, the tower forms a self-locking unfolding shape. Then, the wind turbine tower foundation installed at the bottom of the tower is slowly lowered into the seabed foundation by the hoisting frame on the transport ship to complete the construction operation.

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