Tower drum and wind generating set

Abstract

The invention relates to the technical field of wind power generation, and discloses a tower drum and a wind generating set. The second barrel body part has a vertical state and a folded state; in the vertical state, the second barrel part is located above the first barrel part; in the folding state, at least partial structures of the second barrel part and the first barrel part are overlapped in the vertical direction; the folding mechanism is connected between the first barrel part and the second barrel part; the folding mechanism is used for driving the second barrel part to be switched between the vertical state and the folding state. According to the tower drum and the wind generating set, the survivability of the wind generating set in extreme weather is effectively improved, and the equipment damage risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a tower and a wind power generator set. Background Art

[0002] A wind turbine typically consists of a tower, a nacelle, and blades mounted on top of the tower. Existing wind turbines primarily use a yaw system to adjust the nacelle's direction to reduce lateral loads, and a pitch system to adjust the blade pitch angle to control the rotor speed and power, thereby coping with complex weather conditions and reducing the risk of wind turbine damage. However, in extreme weather conditions such as typhoons and strong gusts, the yaw system's response speed and adjustment accuracy struggle to keep up with drastic changes in wind speed, and the pitch system's adjustment range and mechanical strength easily reach their limits. Wind turbines still face a high risk of damage, resulting in high maintenance costs and prolonged downtime, seriously impacting the wind farm's power generation efficiency and economic benefits. Therefore, there is an urgent need to improve the survivability of wind turbines in extreme weather. Summary of the Invention

[0003] In view of this, the present invention provides a tower and a wind turbine generator set to solve the problem that existing wind turbine generator sets are difficult to withstand extreme weather and are prone to damage.

[0004] In the first aspect, the present invention provides a tower for use in a wind turbine generator set, comprising: a first cylinder portion; a second cylinder portion, having a vertical state and a folded state; in the vertical state, the second cylinder portion is located above the first cylinder portion; in the folded state, the second cylinder portion and the first cylinder portion have at least partial structural overlap in the vertical direction; a folding mechanism, connected between the first cylinder portion and the second cylinder portion; the folding mechanism is used to drive the second cylinder portion to switch between the vertical state and the folded state.

[0005] In an optional embodiment, in a vertical state, the second cylindrical portion has a connection position connected to the first cylindrical portion and a detachment position detached from the first cylindrical portion; the folding mechanism includes a base, which is movably arranged in the first cylindrical portion along the vertical direction; the base is used to drive the second cylindrical portion to move between the connection position and the detachment position.

[0006] In an optional embodiment, the folding mechanism includes a connecting rod assembly, which is connected between the base and the second cylindrical portion; when the second cylindrical portion is in the disengaged position, the connecting rod assembly is used to drive the second cylindrical portion to switch between a vertical state and a folded state.

[0007] In an optional embodiment, the connecting rod assembly includes a first telescopic member, a second telescopic member and a rotating member; the first telescopic member is connected to the base, and the rotating member is arranged on the first telescopic member; one end of the second telescopic member along its own telescopic direction is connected to the rotating member, and the other end is rotatably connected to the second cylindrical portion; the rotating member is used to drive the second telescopic member to rotate in a vertical plane, so as to drive the second cylindrical portion to switch between a vertical state and a folded state.

[0008] In an optional embodiment, the connecting rod assembly includes a third telescopic member and a fourth telescopic member; one end of the third telescopic member along its own telescopic direction is rotatably connected to the first telescopic member, and the other end is rotatably connected to the fourth telescopic member; the end of the fourth telescopic member away from the third telescopic member is fixedly connected to the second cylindrical portion.

[0009] In an optional embodiment, the first telescopic member, the third telescopic member and the fourth telescopic member are located in the same vertical plane.

[0010] In an optional embodiment, a transmission mechanism is included; the transmission mechanism is arranged between the base and the first cylindrical portion, and the transmission mechanism is used to drive the base to move in the vertical direction.

[0011] In an optional embodiment, the transmission mechanism includes a rack, a gear and a driving member; the rack is engaged with the gear, and the driving member is connected to the gear to drive the gear to rotate; one of the rack and the gear is provided on the inner wall of the first cylindrical portion, and the other is provided on the edge of the base; the driving member is provided on the inner wall of the first cylindrical portion or the base.

[0012] In an optional embodiment, a concave-convex structure is provided at the connecting surface between the first cylindrical portion and the second cylindrical portion.

[0013] In a second aspect, the present invention further provides a wind turbine generator set, comprising: the above-mentioned tower; a control unit connected to the folding mechanism signal; the control unit is used to drive the second cylinder portion to switch between a vertical state and a folded state through the folding mechanism.

[0014] The tower provided by the present invention is provided with a second cylinder portion having a vertical state and a folded state, and a folding mechanism is used to drive the second cylinder portion to switch between the vertical state and the folded state. In extremely severe weather (such as typhoons and strong gusts), the second cylinder portion can be folded to a state where the structure at least partially overlaps with the first cylinder portion in the vertical direction, thereby reducing the overall height of the tower, reducing the load impact of wind on the tower and the wind turbine, effectively improving the survivability of the wind turbine in extreme weather, and reducing the risk of equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a structural schematic diagram of a tower in which the second cylinder portion is in a vertical state according to an embodiment of the present invention;

[0017] Figure 2 This is a structural schematic diagram of a tower in an embodiment of the present invention in which the second cylinder portion is in a folded state;

[0018] Figure 3 for Figure 2 Left side view;

[0019] Figure 4 for Figure 2 A partial enlarged view of point A in the middle.

[0020] Description of reference numerals:

[0021] 1. First cylindrical portion; 2. Second cylindrical portion; 3. Folding mechanism; 31. Base; 32. First telescopic member; 33. Second telescopic member; 34. Third telescopic member; 35. Fourth telescopic member; 36. Rotating member; 4. Transmission mechanism; 41. Rack; 42. Gear; 5. Nacelle; 6. Blades. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0023] The following combination Figures 1 to 4 , describing embodiments of the present invention.

[0024] According to an embodiment of the present invention, on one hand, a tower is provided for use in a wind turbine generator set. The tower includes a first cylinder portion 1 , a second cylinder portion 2 and a folding mechanism 3 .

[0025] Specifically, the second barrel portion 2 has a vertical state and a folded state. In the vertical state, the second barrel portion 2 is located above the first barrel portion 1; in the folded state, the second barrel portion 2 and the first barrel portion 1 at least partially overlap in the vertical direction. The folding mechanism 3 is connected between the first barrel portion 1 and the second barrel portion 2, and the folding mechanism 3 is used to drive the second barrel portion 2 to switch between the vertical state and the folded state. The vertical direction is also the Figures 1 to 4 The Z direction shown in .

[0026] It can be understood that the vertical state specifically refers to the state in which the second cylindrical portion 2 is located above the first cylindrical portion 1 and extends in the vertical direction; the folded state specifically refers to the state in which part of the structure of the second cylindrical portion 2 overlaps with the first cylindrical portion 1 in the vertical direction, more specifically, as shown in FIG. Figure 2 As shown in FIG, in a direction perpendicular to the vertical direction, the second cylindrical portion 2 is located on one side of the first cylindrical portion, and the second cylindrical portion 2 is rotated 180°.

[0027] The tower provided by the present invention is provided with a second cylinder part 2 having a vertical state and a folded state, and a folding mechanism 3 is used to drive the second cylinder part 2 to switch between the vertical state and the folded state. In extremely severe weather (such as typhoons and strong gusts), the second cylinder part 2 can be folded to a state where the structure at least partially overlaps with the first cylinder part 1 in the vertical direction, thereby reducing the overall height of the tower, reducing the load impact of wind on the tower and the wind turbine, effectively improving the survivability of the wind turbine in extreme weather, and reducing the risk of equipment damage.

[0028] It should be noted that the first barrel portion 1 can serve as a tower base and be directly connected to the foundation. For example, a flange is provided at the bottom of the first barrel portion 1, and the flange is connected to the embedded parts in the foundation using high-strength bolts. Alternatively, the first barrel portion 1 is not a tower base, and a third barrel portion is provided below the first barrel portion 1; the first barrel portion 1 is connected to the third barrel portion, such as by connecting flanges and bolts, welding, etc.; the third barrel portion serves as a tower base and is connected to the foundation. Exemplarily, the first barrel portion 1 is a cylindrical barrel structure, a frustum-shaped barrel structure, or other shapes.

[0029] Furthermore, the second barrel portion 2 can be the top structure of the tower, and the tower also includes a nacelle 5 and blades 6. The nacelle 5 is mounted on the second barrel portion 2, and the blades 6 are mounted on the nacelle 5. Among them, the nacelle 5 integrates a generator, a gearbox (some models), a control unit and a sensor array, which are responsible for converting the mechanical energy captured by the blades 6 into electrical energy, and regulating the pitch, yaw and torque in real time, and monitoring the operating parameters to ensure safety and efficiency. The blades 6 are used to capture wind energy, generate mechanical energy through rotation, and transmit the mechanical energy to the generator to generate electrical energy. Exemplarily, the second barrel portion 2 is a cylindrical barrel structure, a frustum-shaped barrel structure, or other shapes.

[0030] Since the cabin 5 and the blades 6 are installed on the second cylindrical portion 2, when facing extreme weather, the folding mechanism 3 switches the second cylindrical portion 2 from a vertical state to a folded state, so that the height of the second cylindrical portion 2 is reduced, and at the same time, the height of the cabin 5 and the blades 6 installed on the second cylindrical portion 2 is reduced, thereby preventing the cabin 5 and the blades 6 from being damaged by extreme weather.

[0031] Furthermore, in some embodiments, in the vertical state, the second cylindrical portion 2 has a connection position connected to the first cylindrical portion 1 and a detachment position detached from the first cylindrical portion 1. The folding mechanism 3 includes a base 31, which is movably arranged in the first cylindrical portion 1 along the vertical direction. The base 31 is used to drive the second cylindrical portion 2 to move between the connection position and the detachment position. Specifically, a cavity is formed in the first cylindrical portion 1, and the base 31 is movably connected to the cavity of the first cylindrical portion 1. Among them, Figure 1 The diagram shows the structure of the second cylindrical portion 2 in the connected position. When the base 31 moves upward, it can push the second cylindrical portion 2 upward to the disengaged position. The upward or downward movement of the base 31, that is, the distance between the connected and disengaged positions of the second cylindrical portion 2, can be adaptively adjusted according to the actual size of the tower to enable the second cylindrical portion 2 to freely switch between the upright and folded positions.

[0032] In this embodiment, by arranging the second cylindrical portion 2 and the first cylindrical portion 1 in a vertical state at a connection position and a disconnection position, and utilizing the base 31 to drive the second cylindrical portion 2 between the connection and disconnection positions, the second cylindrical portion 2 and the first cylindrical portion 1 can be flexibly connected and disconnected. The disconnection position provides space for the folding of the second cylindrical portion 2, while the connection position ensures the structural stability of the tower under normal operating conditions, taking into account the different needs of the wind turbine generator system in both normal meteorological conditions and extreme weather conditions.

[0033] Furthermore, in some embodiments, the folding mechanism 3 includes a connecting rod assembly, which is connected between the base 31 and the second cylindrical portion 2. When the second cylindrical portion 2 is in the disengaged position, the connecting rod assembly is used to drive the second cylindrical portion 2 to switch between the vertical state and the folded state. In this embodiment, the folding mechanism 3 is provided with a connecting rod assembly connected between the base 31 and the second cylindrical portion 2. Through the transmission action of the connecting rod assembly, the switching action of the second cylindrical portion 2 between the vertical state and the folded state can be more accurately controlled, ensuring a smooth and reliable folding process, avoiding component damage or structural instability due to uncontrolled action, and improving the operational safety of the folding mechanism 3.

[0034] More specifically, in some embodiments, the connecting rod assembly includes a first telescopic member 32, a second telescopic member 33, and a rotating member 36. The first telescopic member 32 is connected to the base 31, and the rotating member 36 is disposed on the first telescopic member 32. The second telescopic member 33 is connected to the rotating member 36 at one end along its own telescopic direction, and is rotatably connected to the second cylindrical portion 2 at the other end. The rotating member 36 is used to drive the second telescopic member 33 to rotate in a vertical plane, thereby driving the second cylindrical portion 2 to switch between the upright state and the folded state.

[0035] In this embodiment, the connecting rod assembly includes a first telescopic member 32, a second telescopic member 33, and a rotating member 36. The first telescopic member 32 is connected to the base 31, and the rotating member 36 drives the second telescopic member 33 to rotate within a vertical plane. This allows for flexible adjustment of the motion trajectory of the second cylindrical portion 2, ensuring a smooth transition between the upright and folded positions. The length adjustment of the telescopic member, combined with the rotation of the rotating member 36, allows for adaptability to different folding angles, improving the adaptability and reliability of the folding action.

[0036] Exemplarily, the first telescopic member 32 can be a hydraulic cylinder, an electric push rod, a scissor lift, an electric screw, etc.; the second telescopic member 33 can be a hydraulic cylinder, an electric push rod, a gas spring, etc.; the rotating member 36 can be a rotating motor, a hydraulic pump, a gear box, a turbine box, etc.

[0037] Preferably, the first telescopic member 32 and the second telescopic member 33 are hydraulic cylinders, and the rotating member 36 is a rotary motor, which has a simple structure and high reliability. Wherein, the cylinder body of the first telescopic member 32 can be connected to the base 31, such as welding, bolt connection, etc., and the piston rod of the first telescopic member 32 is telescopically arranged in the cylinder body of the first telescopic member 32. The above-mentioned rotating member 36 can be installed on the cylinder body of the first telescopic member 32. The self-expansion direction of the second telescopic member 33 is also the extension direction of the cylinder body of the second telescopic member 33 and the telescopic rod. Wherein, the cylinder body of the second telescopic member 33 can be connected to the driving end of the rotating member 36, such as through a spline connection, etc.; the piston rod of the second telescopic member 33 can be telescopically arranged in the cylinder body of the second telescopic member 33, and the piston rod of the second telescopic member 33 is rotatably connected to the second cylindrical body portion 2, such as through a ball joint, a pin, etc. As an alternative embodiment, the cylinder body of the second telescopic member 33 can also be rotatably connected to the second cylindrical body portion 2, and the piston rod of the second telescopic member 33 is connected to the driving end of the rotating member 36.

[0038] Furthermore, in some embodiments, the connecting rod assembly includes a third telescopic member 34 and a fourth telescopic member 35. One end of the third telescopic member 34 along its own telescopic direction is rotatably connected to the first telescopic member 32, and the other end is rotatably connected to the fourth telescopic member 35; the end of the fourth telescopic member 35 away from the third telescopic member 34 is fixedly connected to the second cylindrical portion 2. Figure 2As shown, the first telescopic member 32 , the second telescopic member 33 , the third telescopic member 34 and the fourth telescopic member 35 together form a four-bar linkage structure.

[0039] In this embodiment, the connecting rod assembly further includes a third telescopic member 34 and a fourth telescopic member 35. With the third telescopic member 34 pivotally connected to the first telescopic member 32 and the fourth telescopic member 35 fixedly connected to the second cylindrical portion 2, a multi-stage telescopic support structure is formed. This structure disperses the load during the folding process, preventing deformation or failure of a single telescopic member due to excessive force. This enhances the overall strength and stability of the connecting rod assembly and ensures reliable folding of the second cylindrical portion 2.

[0040] Exemplarily, the third telescopic member 34 may be a hydraulic cylinder, an electric push rod, a gas spring, etc.; the fourth telescopic member 35 may also be a hydraulic cylinder, an electric push rod, a gas spring, etc.

[0041] Preferably, the third telescopic member 34 and the fourth telescopic member 35 are hydraulic cylinders. The self-extension direction of the third telescopic member 34 is also the extension direction of the cylinder body and the piston rod of the third telescopic member 34. Among them, the cylinder body of the third telescopic member 34 can be rotatably connected to the piston rod of the first telescopic member 32, such as by a pin, a ball joint, etc.; the piston rod of the third telescopic member 34 can be rotatably connected to the cylinder body of the fourth telescopic member 35, such as by a pin, a ball joint, etc. The end of the fourth telescopic member 35 away from the third telescopic member 34, that is, the piston rod of the fourth telescopic member 35 is fixedly connected to the second cylindrical portion 2, such as by bolt connection, welding, riveting or other connection structures.

[0042] As an alternative embodiment, the piston rod of the third telescopic member 34 may be rotatably connected to the piston rod of the first telescopic member 32, and the cylinder of the third telescopic member 34 may be rotatably connected to the cylinder of the fourth telescopic member 35. As an alternative embodiment, the piston rod or cylinder of the third telescopic member 34 may be connected to the piston rod of the fourth telescopic member 35, and the cylinder of the fourth telescopic member 35 may be fixedly connected to the second cylindrical portion 2.

[0043] In some embodiments, as Figure 3 As shown, the first telescopic member 32, the third telescopic member 34 and the fourth telescopic member 35 are located in the same vertical plane. The vertical plane where the second telescopic member 33 is located is parallel to the vertical plane where the first telescopic member 32, the third telescopic member 34 and the fourth telescopic member 35 are located. In this way, when the second cylindrical portion 2 is in a vertical state, the first telescopic member 32, the third telescopic member 34 and the fourth telescopic member 35 are located on the same vertical line, as shown in FIG. Figure 1As shown; the second telescopic member 33 is arranged parallel to the first telescopic member 32, the third telescopic member 34 and the fourth telescopic member 35. At this time, the first telescopic member 32, the third telescopic member 34, the fourth telescopic member 35 and the second telescopic member 33 can jointly provide a stable connecting force to the first cylindrical portion 1 and the second cylindrical portion 2, ensuring the connection stability of the first cylindrical portion 1 and the second cylindrical portion 2 when they are in the connected position.

[0044] In addition, by arranging the first telescopic member 32, the third telescopic member 34 and the fourth telescopic member 35 in the same vertical plane, the space occupied by the folding mechanism 3 in the horizontal direction is reduced, interference problems during the movement of components are avoided, and the movement trajectory of the folding mechanism 3 is simplified, making the folding action of the second cylindrical part 2 smoother and more efficient, and reducing the risk of mechanical failure.

[0045] Furthermore, one end of the second telescopic member 33 is rotatably connected to the second cylindrical portion 2, and one end of the fourth telescopic member 35 is fixedly connected to the second cylindrical portion 2. The second telescopic member 33 and the fourth telescopic member 35 can be connected to different positions of the second cylindrical portion 2. As an alternative embodiment, the second telescopic member 33 and the fourth telescopic member 35 can also be connected to the same position of the second cylindrical portion 2.

[0046] Furthermore, in some embodiments, the tower further includes a transmission mechanism 4, which is located within the cavity of the first cylindrical portion 1 and disposed between the base 31 and the first cylindrical portion 1. The transmission mechanism 4 is configured to drive the base 31 to move vertically. In this embodiment, the transmission mechanism 4 is configured to drive the base 31 to move vertically. Through precise control of the transmission mechanism 4, the position of the base 31 can be precisely adjusted, ensuring that the second cylindrical portion 2 accurately moves between the connected and disconnected positions. This improves the accuracy and reliability of the folding mechanism 3 and provides a fundamental guarantee for the smooth folding or unfolding of the second cylindrical portion 2.

[0047] Exemplarily, the transmission mechanism 4 may be a hydraulic lifting structure, a ball screw lifting structure, a scissor lift structure, a rack and pinion lifting structure, or the like.

[0048] Preferably, the transmission mechanism 4 is a rack and pinion lifting structure. Specifically, the transmission mechanism 4 includes a rack 41, a gear 42, and a driver. The rack 41 meshes with the gear 42, and the driver is connected to the gear 42 to drive the gear 42 to rotate. One of the rack 41 and the gear 42 is located on the inner wall of the first cylindrical portion 1, and the other is located on the edge of the base 31. The driver is located on the inner wall of the first cylindrical portion 1 or on the base 31.

[0049] In this embodiment, transmission mechanism 4 utilizes a combination of a rack 41, a gear 42, and a drive element. Leveraging the efficient transmission characteristics of gear 42 and rack 41, combined with the remote control capabilities of the drive element (e.g., a motor), transmission mechanism 4 can quickly respond to extreme weather conditions and drive base 31 to move, thereby improving the tower's responsiveness to sudden extreme weather events. Furthermore, the simple and easily maintained transmission structure of gear 42 and rack 41 ensures the long-term reliability of transmission mechanism 4.

[0050] For example, Figure 4 As shown, a rack 41 can be disposed on the inner wall of the first cylindrical portion 1 and extend in the vertical direction. A gear 42 can be disposed on the edge of the base 31, and a driving member is mounted on the base 31. The driving end of the driving member is in driving connection with the gear 42 to drive the gear 42 to rotate, thereby driving the base 31 to move in the vertical direction along the rack 41.

[0051] For example, the racks 41 may be arranged in multiple groups at intervals along the circumference of the inner wall of the first cylindrical portion 1, or may be arranged along the entire circumference. For example, the racks 41 and the inner wall of the first cylindrical portion 1 may be integrally formed and connected by bolts.

[0052] For example, the gears 42 may be arranged in a plurality of groups at intervals along the circumference of the base 31 and respectively mesh with the plurality of racks 41. For example, the gears 42 may be rotatably mounted on the base 31 around their own axis via a bracket.

[0053] For example, the driving member may be a motor.

[0054] In some embodiments, a concave-convex structure is provided at the connection surface between the first cylindrical portion 1 and the second cylindrical portion 2. In this embodiment, the concave-convex structure is provided at the connection surface between the first cylindrical portion 1 and the second cylindrical portion 2. Through the cooperation of the protrusion and the groove, the contact area and friction of the connection surface are increased, the bonding strength of the connection position is improved, and the second cylindrical portion 2 is prevented from separating from the first cylindrical portion 1 due to wind load in the vertical state, thereby enhancing the structural stability of the tower under normal operating conditions. In addition, it is compatible with the folding structure of the present invention, and the second cylindrical portion 2 can automatically switch between the vertical state and the folded state without human intervention.

[0055] Exemplarily, the concave-convex structure may include a first concave-convex structure, which is arranged between the top end face of the first cylindrical portion 1 and the bottom end face of the second cylindrical portion 2. For example, the top end face of the first cylindrical portion 1 is provided with an annular groove, and the bottom end face of the second cylindrical portion 2 is provided with an annular protrusion, and when the second cylindrical portion 2 is in the connected position, the annular groove and the annular protrusion are engaged with each other. The annular groove and the annular protrusion are also the above-mentioned first concave-convex structure. As an alternative embodiment, the top end face of the first cylindrical portion 1 is provided with an annular protrusion, and the bottom end face of the second cylindrical portion 2 is provided with an annular groove.

[0056] Exemplarily, the concave-convex structure may include a second concave-convex structure, and the second concave-convex structure is arranged between the side wall of the first cylindrical portion 1 close to the top end face and the side wall of the second cylindrical portion 2 close to the bottom end face. For example, a plurality of strip grooves are arranged circumferentially on the side wall of the first cylindrical portion 1 close to the top end face, and a plurality of strip protrusions are arranged circumferentially on the side wall of the second cylindrical portion 2 close to the bottom end face, and when the second cylindrical portion 2 is in the connected position, the strip grooves and the strip protrusions are embedded. The strip grooves and the strip protrusions are also the above-mentioned second concave-convex structure. It can be understood that the strip grooves and the strip protrusions both extend in the vertical direction, and one end of the strip groove passes through the top end face of the first cylindrical portion 1 to facilitate the adjustment of the strip protrusion embedding. As an alternative embodiment, a plurality of strip-shaped protrusions are circumferentially spaced apart on the side wall of the first cylindrical portion 1 near the top end face, and a plurality of strip-shaped grooves are circumferentially spaced apart on the side wall of the second cylindrical portion 2 near the bottom end face, with one end of the strip-shaped groove passing through the bottom end face of the second cylindrical portion 2.

[0057] The process of switching the tower of the present invention between the vertical state and the folded state is as follows:

[0058] From the vertical state (such as Figure 1 ) to the folded state (e.g. Figure 2 ) when: the base 31 drives the second cylindrical portion 2 to move from the connected position to the disengaged position; the first telescopic member 32 extends, and the second telescopic member 33 shortens; the rotating member 36 drives the second telescopic member 33 to rotate toward the side away from the first cylindrical portion 1, and at the same time the third telescopic member 34 and the fourth telescopic member 35 extend until the second cylindrical portion 2 is in a horizontal state; the rotating member 36 drives the second telescopic member 33 to continue rotating, and at the same time the third telescopic member 34 and the fourth telescopic member 35 extend until the second cylindrical portion 2 is in a folded state.

[0059] From the folded state (such as Figure 2 ) to the vertical position (such as Figure 1 ) when: the rotating member 36 drives the second telescopic member 33 to rotate toward the side close to the first cylindrical portion 1, while the third telescopic member 34 and the fourth telescopic member 35 shorten until the second cylindrical portion 2 is in a horizontal state; the rotating member 36 drives the second telescopic member 33 to continue rotating, while the second telescopic member 33 extends, and the first telescopic member 32, the third telescopic member 34 and the fourth telescopic member 35 shorten until the second cylindrical portion 2 is in a vertical state; the base 31 drives the second cylindrical portion 2 to move from the disengaged position to the connected position. At this time, the first telescopic member 32, the second telescopic member 33, the third telescopic member 34 and the fourth telescopic member 35 jointly provide a connecting force for the first cylindrical portion 1 and the second cylindrical portion 2, ensuring the reliability of the connection between the two.

[0060] According to another aspect of an embodiment of the present invention, a wind turbine generator set is provided. The wind turbine generator set includes the tower described above and a control unit, wherein the control unit is signal-connected to the folding mechanism 3. The control unit is configured to drive the second cylindrical portion 2 to switch between an upright state and a folded state via the folding mechanism 3. The control unit may be integrated into the nacelle 5 of the tower.

[0061] In this embodiment, the wind turbine generator set automatically controls the state switching of the second cylindrical portion 2 by providing a control unit connected to the folding mechanism 3. The control unit can trigger the folding mechanism 3 in a timely manner based on real-time meteorological data (such as wind speed and direction) without manual intervention. This improves the timeliness and accuracy of the wind turbine generator set's response to extreme weather conditions, further reduces the risk of equipment damage, and ensures the power generation efficiency and economic benefits of the wind farm.

[0062] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A tower, used in a wind turbine generator set, characterized in that: include: a first cylindrical portion (1); The second cylindrical portion (2) has a vertical state and a folded state; In the vertical state, the second cylindrical portion (2) is located above the first cylindrical portion (1); in the folded state, the second cylindrical portion (2) and the first cylindrical portion (1) at least partially overlap in structure in the vertical direction; A folding mechanism (3) is connected between the first cylindrical portion (1) and the second cylindrical portion (2); the folding mechanism (3) is used to drive the second cylindrical portion (2) to switch between the vertical state and the folded state.

2. The tower according to claim 1, characterized in that In the vertical state, the second cylindrical portion (2) has a connection position connected to the first cylindrical portion (1) and a separation position separated from the first cylindrical portion (1); The folding mechanism (3) comprises a base (31) which is movably arranged in the first cylindrical portion (1) along the vertical direction; the base (31) is used to drive the second cylindrical portion (2) to move between the connected position and the disconnected position.

3. The tower according to claim 2, characterized in that: The folding mechanism (3) comprises a connecting rod assembly connected between the base (31) and the second cylindrical portion (2); when the second cylindrical portion (2) is located in the disengaged position, the connecting rod assembly is used to drive the second cylindrical portion (2) to switch between the vertical state and the folded state.

4. The tower according to claim 3, characterized in that: The connecting rod assembly includes a first telescopic member (32), a second telescopic member (33) and a rotating member (36); the first telescopic member (32) is connected to the base (31), and the rotating member (36) is arranged on the first telescopic member (32); one end of the second telescopic member (33) along its own telescopic direction is connected to the rotating member (36), and the other end is rotatably connected to the second cylindrical portion (2); the rotating member (36) is used to drive the second telescopic member (33) to rotate in a vertical plane, so as to drive the second cylindrical portion (2) to switch between the vertical state and the folded state.

5. The tower according to claim 4, characterized in that The connecting rod assembly comprises a third telescopic member (34) and a fourth telescopic member (35); one end of the third telescopic member (34) along its own telescopic direction is rotatably connected to the first telescopic member (32), and the other end is rotatably connected to the fourth telescopic member (35); the end of the fourth telescopic member (35) away from the third telescopic member (34) is fixedly connected to the second cylindrical portion (2).

6. The tower according to claim 5, characterized in that The first telescopic member (32), the third telescopic member (34) and the fourth telescopic member (35) are located in the same vertical plane.

7. The tower according to any one of claims 2 to 6, characterized in that: It comprises a transmission mechanism (4); the transmission mechanism (4) is arranged between the base (31) and the first cylindrical portion (1), and the transmission mechanism (4) is used to drive the base (31) to move along the vertical direction.

8. The tower according to claim 7, characterized in that: The transmission mechanism (4) includes a rack (41), a gear (42) and a driving member; the rack (41) is meshed with the gear (42), and the driving member is connected to the gear (42) to drive the gear (42) to rotate; One of the rack (41) and the gear (42) is arranged on the inner wall of the first cylindrical portion (1), and the other is arranged on the edge of the base (31); the driving member is arranged on the inner wall of the first cylindrical portion (1) or the base (31).

9. The tower according to any one of claims 2 to 6, characterized in that: A concave-convex structure is provided at the connection surface between the first cylindrical portion (1) and the second cylindrical portion (2).

10. A wind turbine generator set, characterized in that: include: The tower according to any one of claims 1 to 9; A control unit is connected to the folding mechanism (3) via a signal; the control unit is used to drive the second cylindrical portion (2) to switch between the vertical state and the folded state via the folding mechanism (3).

Images