A novel hybrid tower structure for wind turbine generators

Abstract

This utility model provides a novel hybrid tower structure for wind turbine generator sets, including a concrete column, a metal cylinder I mounted on the concrete column, and a metal cylinder II mounted on the metal cylinder I. Alignment mechanisms are provided on both metal cylinders I and II. The alignment mechanism includes a housing, a limit frame inserted into the housing, and a rotating shaft rotatably connected to the limit frame. A fixing plate is fixedly connected inside the metal cylinder I, a chassis is fixedly connected to the fixing plate, and a limit seat is fixedly connected to the chassis. A limit ring is fixedly connected inside the metal cylinder II, and a limit opening is formed inside the limit ring. The limit seat is inserted into the limit opening. Two rotating ports are provided opposite each other on the metal cylinder II. By setting an alignment mechanism on the steel structure, it is convenient to quickly align the screw holes of the steel structure being installed with those of the already installed steel structure, thereby improving the installation speed of the steel structure.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine tower technology, specifically relating to a novel hybrid tower structure for wind turbines. Background Technology

[0002] The tower is a key supporting structure for wind turbine generators. Its core function is to provide a stable and safe operating platform for the wind turbine generators, while optimizing power generation efficiency and ensuring equipment safety; it also supports the wind rotor and nacelle. The new hybrid tower (hybrid tower) for wind turbine generators is a conical structure combining steel and concrete, which has advantages in economy, stability, adaptability and durability. Steel-concrete composite tower: the lower part uses a precast concrete tower (PC tower), and the upper part is connected to a steel tower, with the rigidity transition achieved through prestressed tendons or metal connectors; all-concrete tower: adopts segmented prefabrication or slipform process, and is spliced ​​with high-strength grouting material, which can exceed the 200-meter level in height.

[0003] However, current wind turbine generator sets use concrete columns at the bottom and multiple steel sections spliced ​​together at the top. These steel sections are hoisted during installation. When connecting the steel structure being hoisted with the already installed steel structure, there is no alignment mechanism on the two steel structures. During hoisting, the steel structure being hoisted may sway. The lack of an alignment mechanism makes it difficult to quickly align the two steel structures and align the bolt holes, thus affecting the installation speed of the steel structure. Utility Model Content

[0004] The purpose of this utility model is to provide a novel hybrid tower structure for wind turbine generator sets in order to solve the above-mentioned problems. By setting an alignment mechanism on the steel structure, it is easy to quickly align the bolt holes of the steel structure being installed with those of the steel structure that has already been installed, thereby improving the installation speed of the steel structure.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A novel hybrid tower structure for wind turbine generator sets includes a concrete column, a metal cylinder one installed on the concrete column, a metal cylinder two installed on the metal cylinder one, two rotating openings opposite each other on the metal cylinder two, and alignment mechanisms provided on the metal cylinder one and the metal cylinder two.

[0007] The alignment mechanism includes a housing. The housing is fixedly connected to the side wall of the first metal cylinder. A limiting frame is inserted into the housing. A rotating shaft is rotatably connected to the limiting frame. A baffle is fixedly connected to the end of the rotating shaft. A limiting plate is fixedly connected to the side wall of the second metal cylinder. The limiting plate is clamped between the limiting frame and the baffle. The side of the limiting frame and the opposite surface of the limiting plate are coplanar with the cross-sections of the second and first metal cylinders. A fixing plate is fixedly connected inside the first metal cylinder. A chassis is fixedly connected to the fixing plate.

[0008] In a preferred embodiment, a limiting seat is fixedly connected to the chassis, a limiting ring is fixedly connected inside the metal cylinder, a limiting hole is opened inside the limiting ring, and the limiting seat is inserted into the limiting hole.

[0009] As a preferred embodiment, the chassis has a disc-shaped structure, and the limiting seat on the chassis has a frustum-shaped structure.

[0010] As a preferred embodiment, a rudder is fixedly connected to the end of the rotating shaft.

[0011] As a preferred embodiment, the front and side surfaces of the limiting frame are both L-shaped, and the distance between the side surface of the limiting frame and the baffle is equal to the thickness of the limiting plate.

[0012] In a preferred embodiment, the diameter of the concrete column is larger than the diameter of the first metal cylinder, and the diameter of the first metal cylinder is larger than the diameter of the second metal cylinder.

[0013] As a preferred embodiment, climbing frames are welded to the side walls of the first metal cylinder and the second metal cylinder. The climbing frames are equidistantly arranged on the first metal cylinder and the second metal cylinder, and the cross-section of the climbing frames is U-shaped.

[0014] As a preferred embodiment, a fixing mechanism is provided between the concrete column and the metal cylinder. The fixing mechanism includes a plug rod. The bottom of the metal cylinder is provided with the plug rod, and the concrete column is provided with a plug hole. The plug rod is inserted into the interior of the plug hole.

[0015] As a preferred embodiment, the insertion rods are welded to the bottom of the metal cylinder in a circumferential array, and the insertion holes are distributed in a circumferential array on the concrete column.

[0016] As a preferred embodiment, the side wall of the concrete column is provided with a side groove, and the side walls of the plurality of insert rods are provided with limit grooves. Two clamps are fixedly connected to each other inside the side groove by screws, and the clamps are inserted into the limit grooves.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention uses a hoisting device to hoist metal cylinder two onto the top of metal cylinder one. During hoisting, the limiting port on the internal limiting ring of metal cylinder two is aligned with the limiting seat on metal cylinder one, and the limiting port is fitted onto the limiting seat. This limits the horizontal direction of metal cylinder two, preventing it from swinging and affecting the alignment with the screw holes on metal cylinder one. Next, the limiting frame can be inserted into the side wall of the outer shell, with the side wall of the limiting frame flush with the side wall of the outer shell. The rotating shaft is rotated, turning the baffle upwards to avoid affecting the fit between the limiting frame and the limiting plate. The hoisting device drives metal cylinder two to rotate slightly clockwise, achieving the fit between the limiting plate and the limiting frame. At this point, the bolt holes on metal cylinder one and metal cylinder two correspond. By rotating the rudder, the baffle is rotated downwards, limiting the limiting frame and facilitating the rapid alignment of the bolt holes on metal cylinder one and metal cylinder two, saving installation time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure of the metal cylinder, outer shell, and limiting frame of this utility model.

[0021] Figure 3 This is a schematic diagram of the connection structure of the fixing plate, base plate, limiting seat and limiting ring of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure of the limiting seat, limiting ring, and limiting port of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure of the limiting plate, baffle and limiting frame of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure of the concrete column, the insert rod, and the metal cylinder of this utility model.

[0025] Figure 7 This is a schematic diagram of the connection structure of the insertion rod and the limiting groove of this utility model;

[0026] Figure 8 This is a schematic diagram of the connection structure of the side groove and clamp of this utility model.

[0027] The diagram shows: 1. Concrete column; 2. Metal cylinder one; 3. Metal cylinder two; 4. Climbing frame; 5. Rotating port; 6. Alignment mechanism; 601. Outer shell; 602. Limiting frame; 603. Limiting plate; 604. Steering disc; 605. Baffle; 606. Fixing plate; 607. Chassis; 608. Limiting seat; 609. Limiting ring; 610. Limiting port; 611. Rotating shaft; 7. Fixing mechanism; 701. Clamp; 702. Insert rod; 703. Limiting groove; 704. Insertion hole; 705. Side groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 8 As shown, this utility model embodiment provides a novel hybrid tower structure for a wind turbine generator set, specifically including a concrete column 1, a metal cylinder 2 mounted on the concrete column 1, and a metal cylinder 3 mounted on the metal cylinder 2. Alignment mechanisms 6 are provided on the metal cylinders 2 and 3. The alignment mechanism 6 includes a housing 601, with the housing 601 fixedly connected to the side wall of the metal cylinder 2. A limiting bracket 602 is inserted into the housing 601, and a rotating shaft 611 is rotatably connected to the limiting bracket 602. A baffle 605 is fixedly connected to the end of the rotating shaft 611, and a limiting plate 605 is fixedly connected to the side wall of the metal cylinder 3. 3. A limiting plate 603 is clamped between a limiting frame 602 and a baffle 605. The side of the limiting frame 602 and the opposite surface of the limiting plate 603 are coplanar with the cross-sections of metal cylinder 2 and metal cylinder 3. A fixing plate 606 is fixedly connected inside metal cylinder 2. A chassis 607 is fixedly connected to the fixing plate 606. A limiting seat 608 is fixedly connected to the chassis 607. A limiting ring 609 is fixedly connected inside metal cylinder 3. A limiting port 610 is opened inside the limiting ring 609. The limiting seat 608 is inserted into the limiting port 610. Two rotating ports 5 are provided opposite to each other on metal cylinder 3. The chassis 607 has a disc-shaped structure, and the limiting seat 608 on the chassis 607 has a frustum-shaped structure, which makes it easier for the limiting seat 608 and the limiting ring 609 to be aligned. A rudder disk 604 is fixedly connected to the end of the rotating shaft 611 to facilitate the rotation of the rotating shaft 611. The front and side surfaces of the limiting frame 602 are both L-shaped, and the distance between the side surface of the limiting frame 602 and the baffle 605 is equal to the thickness of the limiting plate 603, so that when the limiting frame 602 and the limiting plate 603 come into contact, the bolt holes on the metal cylinder 1 2 correspond to the screw holes on the metal cylinder 2 3.

[0030] Please see Figures 1 to 8 As shown, the diameter of concrete column 1 is larger than the diameter of metal cylinder 2, and the diameter of metal cylinder 2 is larger than the diameter of metal cylinder 3, achieving a gradual decrease in diameter from metal cylinder 2 to metal cylinder 3, increasing the stability of the overall structure. Furthermore, the screw holes at metal cylinders 2 and 3 are located in the same position, ensuring they can be connected. Climbing frames 4 are welded to the side walls of metal cylinders 2 and 3, equidistantly positioned on them. The cross-section of the climbing frames 4 has a U-shape, facilitating the maintenance of the wind turbine generator.

[0031] Please see Figures 1 to 8 As shown, a fixing mechanism 7 is provided between the concrete column 1 and the metal cylinder 2. The fixing mechanism 7 includes a rod 702. The bottom of the metal cylinder 2 is provided with a rod 702, and the concrete column 1 is provided with a hole 704. The rod 702 is inserted into the hole 704. The rods 702 are welded to the bottom of the metal cylinder 2 in a circumferential array. The holes 704 are distributed in a circumferential array on the concrete column 1. The fixing mechanism 7 also includes a side groove 705. The side wall of the concrete column 1 is provided with a side groove 705. The side wall of the multiple rods 702 is provided with a limiting groove 703. The inside of the side groove 705 is fixedly connected to two clamps 701 by screws. The clamps 701 are inserted into the limiting groove 703. During installation, the rod 702 is inserted into the hole 704, and the two clamps 701 are further fastened together. The two clamps 701 are fixed by bolts to complete the limiting of the limiting groove 703, which increases the stability of the connection between the metal cylinder 2 and the metal cylinder 3.

[0032] In use, before assembling the entire device, a shell 601 is welded to the side wall of metal cylinder 2, and a limiting plate 603 is welded to the side wall of metal cylinder 3. When the opposite surfaces of the two overlap, the screw holes on metal cylinder 2 and metal cylinder 3 align. Then, during installation, a concrete column 1 is constructed on the ground. Multiple prefabricated insertion holes 704 are arranged in a circular array on the concrete column 1, and side grooves 705 are opened on the side wall of the concrete column 1 to penetrate the insertion holes 704. Multiple insertion rods 702 are welded in a circular array to the bottom of metal cylinder 2. The metal cylinder 2 is then hoisted using hoisting equipment. First, insert the insertion rod 702 into the insertion hole 704 on the concrete column 1. At this time, the limiting groove 703 on the side wall of the insertion rod 702 corresponds to the side groove 705 on the side wall of the concrete column 1. Then, insert the two clamps 701 into the side groove 705. At this time, the side groove 705 limits the clamps 701, and the clamps 701 also limit the insertion rod 702, which increases the stability of the connection between the concrete column 1 and the metal cylinder 2. Then, fix the bottom of the metal cylinder 2 to the top of the concrete column 1 with bolts to complete the connection between the metal cylinder 2 and the concrete column 1. Next, use hoisting equipment to hoist the metal cylinder 3 to the top of the metal cylinder 2. First, align the limiting opening 610 on the limiting ring 609 inside the second metal cylinder 3 with the limiting seat 608 on the first metal cylinder 2. The limiting seat 608 has a frustum-shaped structure, which facilitates alignment with the limiting opening 610. Fit the limiting opening 610 onto the limiting seat 608. This achieves horizontal limitation of the second metal cylinder 3, preventing its swing from affecting the alignment with the screw holes on the first metal cylinder 2. Next, insert the limiting bracket 602 into the side wall of the outer shell 601, with the side wall of the limiting bracket 602 flush with the side wall of the outer shell 601. Rotate the rudder disk 604 to drive the rotating shaft 611 to rotate, and rotate the baffle 605 upwards to prevent it from affecting... The limiting bracket 602 and the limiting plate 603 are fitted together by the hoisting equipment driving the metal cylinder 2 3 to rotate slightly clockwise, so that the limiting plate 603 and the limiting bracket 602 are fitted together. At this time, the bolt holes on the metal cylinder 1 2 and the metal cylinder 2 3 are aligned. By rotating the rudder disk 604, the baffle 605 is rotated downward to limit the limiting bracket 602, which facilitates the quick alignment of the bolt holes on the metal cylinder 1 2 and the metal cylinder 2 3, saving installation time. After installation, the limiting bracket 602 can be pulled out from the inside of the outer shell 601. It can also be used to install other tower equipment. Finally, during maintenance, it can be climbed and maintained using the climbing frame 4.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel hybrid tower structure for wind turbine generators, comprising concrete columns (1), characterized in that: A metal cylinder one (2) is installed on the concrete column (1), and a metal cylinder two (3) is installed on the metal cylinder one (2). Two rotating ports (5) are provided opposite to each other on the metal cylinder two (3). Alignment mechanisms (6) are provided on the metal cylinder one (2) and the metal cylinder two (3). The alignment mechanism (6) includes a housing (601), the side wall of the first metal cylinder (2) is fixedly connected to the housing (601), a limiting frame (602) is inserted into the housing (601), a rotating shaft (611) is rotatably connected to the limiting frame (602), a baffle (605) is fixedly connected to the end of the rotating shaft (611), a limiting plate (603) is fixedly connected to the side wall of the second metal cylinder (3), the limiting plate (603) is clamped between the limiting frame (602) and the baffle (605), the side of the limiting frame (602) and the opposite surface of the limiting plate (603) are coplanar with the cross sections of the second metal cylinder (3) and the first metal cylinder (2), a fixing plate (606) is fixedly connected inside the first metal cylinder (2), and a chassis (607) is fixedly connected to the fixing plate (606).

2. The novel hybrid tower structure for wind turbine generators according to claim 1, characterized in that: A limiting seat (608) is fixedly connected to the chassis (607), and a limiting ring (609) is fixedly connected inside the metal cylinder (3). A limiting port (610) is opened inside the limiting ring (609), and the limiting seat (608) is inserted into the limiting port (610).

3. The novel hybrid tower structure for wind turbine generators according to claim 1, characterized in that: The chassis (607) has a disc-shaped structure, and the limiting seat (608) on the chassis (607) has a frustum-shaped structure.

4. The novel hybrid tower structure for wind turbine generators according to claim 1, characterized in that: The end of the rotating shaft (611) is fixedly connected to a rudder disk (604).

5. The novel hybrid tower structure for wind turbine generators according to claim 1, characterized in that: The front and side surfaces of the limiting frame (602) are both L-shaped, and the distance between the side surface of the limiting frame (602) and the baffle (605) is equal to the thickness of the limiting plate (603).

6. The novel hybrid tower structure for wind turbine generators according to claim 1, characterized in that: The diameter of the concrete column (1) is greater than the diameter of the metal cylinder one (2), and the diameter of the metal cylinder one (2) is greater than the diameter of the metal cylinder two (3).

7. The novel hybrid tower structure for wind turbine generators according to claim 1, characterized in that: Climbing frames (4) are welded to the side walls of the first metal cylinder (2) and the second metal cylinder (3). The climbing frames (4) are equidistantly arranged on the first metal cylinder (2) and the second metal cylinder (3). The cross-section of the climbing frame (4) is U-shaped.

8. The novel hybrid tower structure for wind turbine generators according to claim 1, characterized in that: A fixing mechanism (7) is provided between the concrete column (1) and the metal cylinder (2). The fixing mechanism (7) includes a plug rod (702). The bottom of the metal cylinder (2) is provided with a plug rod (702). The concrete column (1) is provided with a plug hole (704). The plug rod (702) is inserted into the interior of the plug hole (704).

9. The novel hybrid tower structure for wind turbine generators according to claim 8, characterized in that: The insertion rod (702) is welded to the bottom of the metal cylinder (2) in a circumferential array, and the insertion holes (704) are distributed in a circumferential array on the concrete column (1).

10. The novel hybrid tower structure for wind turbine generators according to claim 8, characterized in that: The side wall of the concrete column (1) is provided with a side groove (705), and the side walls of the multiple insertion rods (702) are provided with a limiting groove (703). The inside of the side groove (705) is fixedly connected to two clamps (701) by screws, and the clamps (701) are inserted into the inside of the limiting groove (703).

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