Annular MRD-TLCD damping device applied to interior of wind power tower drum

Abstract

The utility model relates to the technical field of structural engineering of damping devices, in particular to an annular MRD-TLCD damping device applied to the interior of a wind power tower. An annular MRD-TLCD damping device applied to the interior of a wind power tower drum comprises the tower drum, a TLCD assembly and an MRD assembly. The TLCD assembly and the MRD assembly are connected into the tower drum. The TLCD assembly is composed of a TLCD inner wall cylinder, a TLCD outer wall cylinder and upper partition plates, the TLCD inner wall cylinder and the TLCD outer wall cylinder are connected into a whole through the multiple sets of upper partition plates, a cavity between the TLCD inner wall cylinder and the TLCD outer wall cylinder is divided into independent cavity units through the upper partition plates, a U-shaped cavity is formed, the U-shaped cavity is filled with liquid, the MRD assembly is connected into the independent cavity units in an inserted mode, and the TLCD assembly and the MRD assembly are connected in an inserted mode. When vibration and swing occur, liquid in the U-shaped cavity is stressed in a balanced mode through each independent cavity unit, and the damping effect is achieved. And meanwhile, when vibration is generated, the liquid level in the U-shaped cavity fluctuates up and down, the floating plate drives the MRD assembly to adjust the torque, and the damping effect is further achieved.

Description

Technical Field

[0001] The utility model relates to the structural engineering technical field of damping devices, in particular to a circumferential MRD-TLCD damping device applied to the inside of a wind power tower barrel. Background Art

[0002] In recent years, with the gradual promotion of the global "carbon neutral" goal, the unstable prices of non-renewable energy sources and the trend of reducing greenhouse gas (GHG) emissions have led to an increase in investment in renewable energy sources, and clean energy has increasingly become the main choice for energy supply. Wind energy stands out among them. With the development of technology, wind power towers are developing towards MW-level large sizes. At the same time, due to the slender structure of wind power towers, they are more likely to be damaged. In order to improve the service life of wind power towers, damping devices are an effective means.

[0003] The expansion of the wind power scale has made people not only limited to excellent regions, but also began to build wind power towers in earthquake-prone areas. Wind power generation facilities with concentrated mass at the top and large slenderness ratios are extremely vulnerable to strong winds and ground movements. The direction of earthquake loads is variable, and the intensity also changes over time, which poses great requirements for damping devices.

[0004] Traditional TLCD damping devices rely on the gravitational potential energy generated by the flow of liquid in the box and the damping effect generated by the internal partition to achieve the damping effect. Generally speaking, traditional TLCD damping devices only have obvious damping effects on vibrations in a single direction, and have limited effects on other directions. Moreover, the liquid in traditional TLCDs is usually water, which is a relatively light material. In order to achieve a certain mass ratio, more volume is required, so it is difficult to have good applications in some small-volume spaces. In this context, a more effective damping device design is needed, and the circumferential MRD-TLCD damping device can well solve this problem. Compared with traditional fluids, MR fluids are heavier and require less space. In addition, the flow characteristics (i.e., from viscous to semi-solid) change almost instantaneously in the presence of a magnetic field. Through the combined action of liquid columns in multiple directions, the damping effect in multiple directions is achieved.

[0005] The damping technology of wind power towers is one of the key technologies for the development of wind power towers, which affects and restricts the development of wind power towers. With the construction of wind power devices in earthquake-prone areas, the requirements for structural vibration resistance technology are getting higher and higher. The circumferential MRD-TLCD damping device enables the wind power tower to not only not be damaged in minor earthquakes, not collapse in major earthquakes, not cause excessive damage, protect property safety, but also reduce the difficulty of repair after being affected by disasters, and its economic benefits and social value are huge. Content of the Utility Model

[0006] The technical solution of the utility model is as follows:

[0007] A circumferential MRD-TLCD shock absorption device applied inside a wind power tower barrel, comprising a tower barrel, a TLCD component and an MRD component. The TLCD component and the MRD component are connected inside the tower barrel. The TLCD component consists of a TLCD inner wall barrel, a TLCD outer wall barrel and an upper partition plate. The TLCD inner wall barrel and the TLCD outer wall barrel are connected into one body through multiple groups of upper partition plates, and the cavity between the TLCD inner wall barrel and the TLCD outer wall barrel is divided by the upper partition plates to form independent cavity units. An inner sealing bottom plate and an outer sealing bottom plate are respectively arranged at the lower parts of the TLCD inner wall barrel and the TLCD outer wall barrel. The TLCD inner wall barrel, the TLCD outer wall barrel, the inner sealing bottom plate and the outer sealing bottom plate form a U-shaped cavity, and the U-shaped cavity is filled with liquid. The MRD component is inserted into the independent cavity unit, and the TLCD component and the MRD component are inserted. The MRD component consists of a floating plate, a bearing, magnetorheological fluid, an excitation coil, a diaphragm and a pressure accumulator. The inner cavity of the MRD component is filled with magnetorheological fluid. A diaphragm is arranged on the pressure accumulator, and the diaphragm fits and seals with the inner wall of the MRD component. The pressure accumulator and the excitation coil are immersed in the magnetorheological fluid. The connecting shaft on the excitation coil passes through the bearing, and one end of the connecting shaft is connected to the floating plate. The floating plate is located above the liquid filled in the U-shaped cavity. When vibration and sway occur, the liquid in the U-shaped cavity balances the force through each independent cavity unit to play a shock absorption role. At the same time, when vibration occurs, the liquid level in the U-shaped cavity will rise and fall. The floating plate drives the MRD component to adjust the torque, further playing a shock absorption role. In this case, multi-medium shock absorption is realized by filling liquid in the U-shaped cavity and filling magnetorheological fluid in the inner cavity of the MRD component. Compared with traditional equipment, the overall volume is greatly reduced, and at the same time, the shock absorption effect is effectively improved. The TLCD component is a tuned liquid column damper; the MRD component is a magnetorheological fluid damper.

[0008] It further includes a lower partition plate. The lower partition plate is arranged on the inner sealing bottom plate and the outer sealing bottom plate, and the lower partition plate is immersed in the filling liquid in the U-shaped cavity. The space at the lower part of the independent cavity unit is further divided by the lower partition plate. When the liquid flows through the lower partition plate through the independent cavity unit, it plays a secondary shunting role, further increasing the flow resistance and buffering the torque of vibration and sway.

[0009] The lower partition plate is located below the upper partition plate.

[0010] The number of the upper partition plates and the lower partition plates is 6-8. The upper partition plates are evenly distributed along the circumferential direction of the outer wall of the TLCD outer wall barrel. The upper partition plates are located between the TLCD inner wall barrel and the TLCD outer wall barrel, and divide the cavity between the TLCD inner wall barrel and the TLCD outer wall barrel into equal parts. Multiple lower partition plates are spliced into a radial insertion plate, and the lower partition plates further divide the lower cavity of the independent cavity unit. The radial insertion plate is located in the flow channel of the U-shaped cavity. The radial shape effectively blocks the flowing liquid, and at the same time, further divides the lower cavity of the independent cavity unit, generating a separating and shunting effect on the liquid flowing through the U-shaped cavity. The shock absorption effect is comprehensively improved.

[0011] There are 2 groups of radial plates, and the 2 groups of radial plates are connected to the inner sealing bottom plate and the outer sealing bottom plate.

[0012] A gasket is provided on the inner wall of the inner cylinder of the TLCD. Connecting holes are provided on the gasket, the inner cylinder of the TLCD and the outer cylinder of the TLCD, and the connecting holes are connected to the tower barrel through bolts.

[0013] The model of the accumulator is GXQ-0.25L / 21.

[0014] At the joint where the TLCD component and the MRD component are plugged in, sealant is used for bonding, and the MRD component seals the U-shaped cavity through sealant bonding.

[0015] The present utility model provides a circumferential MRD-TLCD vibration damping device, belonging to the technical field of structural engineering. Deforming the traditional TLCD damping device, the MRD-TLCD vibration damping device is made of epoxy resin material, and the manufacturing method is 3D printing, ensuring the quality and airtightness of the components. The circumferential MRD-TLCD vibration damping device has a total of eight compartments with equal volume. An MRD structure is installed at the top of each compartment. The bottom of the MRD-TLCD vibration damping device is separated by baffles with intervals. Based on the magnetorheological technology, the damping force parameters are adjusted to adapt to the changes in structural vibration, realizing effective vibration control. Bolt holes are reserved in advance on the tower barrel, and the MRD-TLCD is connected to the tower barrel through bolts. The processing, welding, and drilling of the tower barrel are modularly prefabricated in the factory.

[0016] The advantages of the present utility model are mainly manifested in the following aspects:

[0017] 1. Simple structure, reasonable design, and flexible layout method.

[0018] 2. It has good seismic performance and can cope with loads in multiple directions.

[0019] 3. The perfusion liquid increases the structural self-weight, thereby effectively increasing its stability, enabling the structure to operate smoothly, increasing the service life of the structure, and increasing economic benefits.

[0020] 4. The magnetorheological liquid has a greater density and can play a greater role in a smaller volume. The damping effect is better than that of traditional fluids.

[0021] 5. It is safe and reliable during the construction process, reduces construction waste and dust pollution, does not cause excessive damage in the event of accidental events, protects the safety of people's lives and property, and can be quickly repaired after disasters to restore its use function, with great economic benefits and social value. Description of the Drawings

[0022] Figure 1Schematic diagram of the circumferential MRD-TLCD shock absorption device inside the wind power tower barrel;

[0023] Figure 2 Schematic diagram of the steel tower barrel;

[0024] Figure 3 Schematic diagram of the TLCD shock absorption device;

[0025] Figure 4 Schematic diagram of the position of the internal partition board of the TLCD shock absorption device;

[0026] Figure 5 Schematic diagram of the upper partition board;

[0027] Figure 6 Schematic diagram of the lower partition board;

[0028] Figure 7 Top view of the steel tower barrel;

[0029] Figure 8 Exploded structural schematic diagram of the MRD shock absorption device;

[0030] Figure 9 Combined structural schematic diagram of the MRD-TLCD shock absorption device;

[0031] Figure 10 Schematic diagram of the MRD shock absorption device;

[0032] Figure 11 Schematic diagram of the installation at the top of the steel tower barrel of the present utility model;

[0033] Figure 12 Schematic diagram of the installation node;

[0034] Figure 13 Partial sectional view of the top of the steel tower barrel of the present utility model;

[0035] Figure 14 Installation flow chart of the present utility model;

[0036] Figure 15 Side view of the inner sealing bottom plate and the outer sealing bottom plate;

[0037] Figure 16 Peripheral view of the inner sealing bottom plate and the outer sealing bottom plate;

[0038] Figure 17 Schematic diagram of the liquid filling in the U-shaped cavity;

[0039] The reference numerals and corresponding names are as follows: 1 - tower barrel; 2 - TLCD assembly; 3 - MRD assembly; 4 - gasket; 5 - bolt; 2-1 - inner wall of TLCD; 2-2 - outer wall of TLCD; 2-3 - upper partition of TLCD; 2-4 - lower partition of TLCD; 2-5 - inner sealing bottom plate; 2-6 - outer sealing bottom plate; 3-1 - floating plate; 3-2 - bearing; 3-3 - magnetorheological fluid; 3-4 - excitation coil; 3-5 - diaphragm; 3-6 - accumulator. Detailed implementation manners

[0040] A circumferential MRD-TLCD shock absorption device applied to the inside of a wind power tower barrel comprises a tower barrel 1, a TLCD assembly 2 and an MRD assembly 3. The TLCD assembly 2 and the MRD assembly 3 are connected inside the tower barrel 1. The TLCD assembly 2 is composed of an inner wall cylinder 2-1 of TLCD, an outer wall cylinder 2-2 of TLCD and an upper partition 2-3. The inner wall cylinder 2-1 of TLCD and the outer wall cylinder 2-2 of TLCD are connected into a whole through multiple groups of upper partitions 2-3, and the cavity between the inner wall cylinder 2-1 of TLCD and the outer wall cylinder 2-2 of TLCD is divided by the upper partitions 2-3 to form independent cavity units. An inner sealing bottom plate 2-5 and an outer sealing bottom plate 2-6 are respectively arranged at the lower parts of the inner wall cylinder 2-1 of TLCD and the outer wall cylinder 2-2 of TLCD. The inner wall cylinder 2-1 of TLCD, the outer wall cylinder 2-2 of TLCD, the inner sealing bottom plate 2-5 and the outer sealing bottom plate 2-6 form a U-shaped cavity, and the U-shaped cavity is filled with liquid. The MRD assembly 3 is inserted into the independent cavity unit, and the TLCD assembly 2 and the MRD assembly 3 are inserted into each other. The MRD assembly 3 is composed of a floating plate 3-1, a bearing 3-2, a magnetorheological fluid 3-3, an excitation coil 3-4, a diaphragm 3-5 and an accumulator 3-6. The magnetorheological fluid 3-3 is filled in the inner cavity of the MRD assembly 3. A diaphragm 3-5 is arranged on the accumulator 3-6, and the diaphragm 3-5 is attached and sealed to the inner wall of the MRD assembly 3. The accumulator 3-6 and the excitation coil 3-4 are immersed in the magnetorheological fluid 3-3. The connecting shaft on the excitation coil 3-4 passes through the bearing 3-2, and one end of the connecting shaft is connected to the floating plate 3-1. The floating plate 3-1 is located above the liquid filled in the U-shaped cavity. A hollow cavity is arranged inside the floating plate 3-1, and there is no requirement for the shape of the floating plate 3-1 as long as it can float on the water surface. The filling liquid in the U-shaped cavity is water. The power connection and wire connection of the MRD assembly 3 are conventional technologies in the art and will not be elaborated here.

[0041] It also includes a lower partition plate 2-4. The lower partition plate 2-4 is provided on the inner sealing bottom plate 2-5 and the outer sealing bottom plate 2-6, and the lower partition plate 2-4 is immersed in the filling liquid in the U-shaped cavity. The lower partition plate 2-4 is located below the upper partition plate 2-3. The number of the upper partition plates 2-3 and the lower partition plates 2-4 is 6-8. The upper partition plates 2-3 are evenly distributed along the circumferential direction of the outer wall of the TLCD outer wall cylinder 2-2. The upper partition plates 2-3 are located between the TLCD inner wall cylinder 2-1 and the TLCD outer wall cylinder 2-2, and divide the cavity between the TLCD inner wall cylinder 2-1 and the TLCD outer wall cylinder 2-2 into equal parts. Multiple lower partition plates 2-4 are spliced into a radial insert plate, and the lower partition plates 2-4 secondarily divide the lower cavity of the independent cavity unit. The radial insert plate is in 2 groups, and the 2 groups of radial insert plates are connected to the inner sealing bottom plate 2-5 and the outer sealing bottom plate 2-6. A gasket 4 is provided on the inner wall of the TLCD inner wall cylinder 2-1. Connecting holes are provided on the gasket 4, the TLCD inner wall cylinder 2-1 and the TLCD outer wall cylinder 2-2, and the connecting holes are connected to the tower barrel 1 through bolts 5. The model of the accumulator 3-6 is GXQ-0.25L / 21. The joint where the TLCD assembly 2 and the MRD assembly 3 are inserted is bonded with a sealant, and the MRD assembly 3 is sealed with a sealant to seal the U-shaped cavity.

[0042] A circumferential MRD-TLCD damping device applied to the inside of a wind turbine tower barrel. The MRD-TLCD damping device is composed of a tower barrel 1, a TLCD 2, and an MRD 3. The tower barrel 1 is a single-layer steel tower barrel. The height of the tower barrel 1 is generally greater than 80 m, mainly based on the actual size of the wind turbine. The specific value should be determined considering various factors such as wind force, tower barrel material, cost-effectiveness, and geographical location. The steel tower barrel is made of steel material with a strength grade of Q355 or above. The TLCD 2 is composed of a TLCD inner wall 2-1, a TLCD outer wall 2-2, an upper partition plate 2-3, and a lower partition plate 2-4. The upper partition plate 2-3, the lower partition plate 2-4, and the TLCD 2 are integrally formed by 3D printing. The position of the upper partition plate 2-3 is such that the partition plate exactly bisects the space inside the tower barrel and divides the space into 8 equal parts. The installation position of the lower partition plate 2-4 is such that the steel partition plate can exactly bisect the space divided by the upper partition plate 2-3, so that the included angle between the lower partition plates 2-4 is 22.5°, ensuring that every two symmetric compartments are perpendicular to the corresponding lower partition plates, and the maximum damping effect can be achieved. The bottom is flush with the bottom surface of the tower barrel.

[0043] Figures 1 - 10 A circumferential MRD-TLCD damping device applied to the inside of a wind turbine tower barrel shown includes a TLCD 2 and an MRD 3.

[0044] As Figure 3 、 4As shown in Figures 5 and 6, the production of TLCD2 is completed integrally through 3D printing technology. The position of the upper partition 2-3 is such that the partition exactly bisects the space inside the tower barrel, dividing the space into eight equal parts. The installation position of the lower partition 2-4 is such that the partition can exactly bisect the space divided by the upper partition again, so that the included angle between the lower partitions is 22.5°, ensuring that each pair of symmetric compartments is perpendicular to the corresponding lower partition, achieving the maximum shock absorption effect.

[0045] The outer diameter R of the outer wall of TLCD2 2-1 = the inner diameter R of the steel tower barrel 1-3, The outer diameter R of the inner wall of TLCD2 2-2 Is determined by the hollow ratio, and the hollow ratio = R 2-2 / R 2-1， That is, R 2-2 / R 2-1 Is between 0.8 and 0.85. To ensure the integrity and stability of TLCD2, the wall thickness d2 ≥ 20 mm. Bolt holes are reserved in advance at the upper part of TLCD2, and TLCD2 is connected to the tower barrel through bolts 5. The mass of TLCD2 accounts for 1.5% - 3% of the overall mass, and the height h2 of the TLCD2 device is determined by the mass ratio, usually between 2 m and 3 m. The taper of TLCD2 is the same as that of the tower barrel, with a taper of about 0.69, that is, the value of arctan[(R 1-1 -R 1-2 ) / h1] is about 0.69 (R 1-1 Is the outer radius at the bottom of the tower barrel, and R 1-2 Is the outer diameter at the top of the tower barrel).

[0046] The upper and lower partitions are integrally printed from epoxy resin material. To ensure the structural stability and sealing performance, the wall thickness d 2-3 And d 2-4 Are greater than or equal to 5 mm. The length h 2-3 Of the upper partition 2-3 is equal to the height of the TLCD device. The width of the upper partition 2-3 is the radius difference between the inner and outer walls of TLCD2. The lower partition 2-4 is composed of two identical plates, with a gap in the middle for the passage of liquid. The position of the lower partition 2-3 is through the center of the TLCD, and the length L 2-4 Is equal to the inner diameter at the bottom of the TLCD device.

[0047] Such as Figure 10As shown, the MRD3 (Magneto-Rheological) structure consists of a floating plate 3-1, a bearing 3-2, magneto-rheological fluid 3-3, an exciting coil 3-4, a diaphragm 3-5, and an accumulator 3-6, a total of 8 pieces, and is in a sealed state as a whole. MRD3 is connected to an external power supply and its damping force changes with the change of current. The magneto-rheological fluid is the core material of MRD and is composed of micron-sized ferromagnetic particles, a base fluid (such as mineral oil or water), a stabilizer, and other additives. When there is no magnetic field, it exhibits Newtonian fluid characteristics; under the action of an external magnetic field, its apparent viscosity increases rapidly.

[0048] The external floating plate 3-1 is fixed through the bearing 3-2. There is a certain space between the bearing 3-2 and the exciting coil 3-4, and the space is filled with magneto-rheological fluid 3-3, whose flow characteristics change with the change of current. The diaphragm 3-5 is at a certain distance below the exciting coil 3-4 and is filled with magneto-rheological fluid 3-3 in the middle. The diaphragm 3-5 separates the accumulator 3-6 from the magneto-rheological fluid 3-3, and the whole is in a sealed state.

[0049] As Figure 8 , 9 shown, the corresponding position of TLCD2 and MRD3 is that MRD3 is inserted into each independent cavity unit of TLCD2. The size of MRD3 corresponds to the size of the compartment, so that MRD3 just covers the compartment outlet. MRD3 and TLCD2 are bonded by epoxy resin glue, and the whole is in a sealed state.

[0050] As Figure 1 , 2 , 11, 12 shown, the MRD-TLCD shock absorber is installed at the top of the wind turbine tower barrel and is connected by bolts 5. A gasket 4 is placed on one side of the MRD-TLCD to reduce the local pressure and increase the force-bearing area. The position of the bolt group is as Figure 11 shown. After the bolts are fixed, epoxy resin glue is covered at the bolt holes to increase its stability and sealing performance.

Claims

1. A circumferential MRD-TLCD damping device applied inside a wind power tower barrel, characterized in that It consists of a tower barrel (1), a TLCD component (2) and an MRD component (3). The TLCD component (2) and the MRD component (3) are connected inside the tower barrel (1). The TLCD component (2) is composed of a TLCD inner wall barrel (2-1), a TLCD outer wall barrel (2-2) and an upper partition board (2-3). The TLCD inner wall barrel (2-1) and the TLCD outer wall barrel (2-2) are connected into one body through multiple groups of upper partition boards (2-3), and the cavity between the TLCD inner wall barrel (2-1) and the TLCD outer wall barrel (2-2) is separated by the upper partition board (2-3) to form independent cavity units. An inner sealing bottom plate (2-5) and an outer sealing bottom plate (2-6) are respectively arranged at the lower parts of the TLCD inner wall barrel (2-1) and the TLCD outer wall barrel (2-2). The TLCD inner wall barrel (2-1), the TLCD outer wall barrel (2-2), the inner sealing bottom plate (2-5) and the outer sealing bottom plate (2-6) form a U-shaped cavity. The U-shaped cavity is filled with liquid. The MRD component (3) is inserted into the independent cavity unit, and the TLCD component (2) and the MRD component (3) are inserted into each other. The MRD component (3) is composed of a floating plate (3-1), a bearing (3-2), a magnetorheological fluid (3-3), an excitation coil (3-4), a diaphragm (3-5) and a pressure accumulator (3-6). The inner cavity of the MRD component (3) is filled with the magnetorheological fluid (3-3). A diaphragm (3-5) is arranged on the pressure accumulator (3-6). The diaphragm (3-5) fits and seals with the inner wall of the MRD component (3). The pressure accumulator (3-6) and the excitation coil (3-4) are immersed in the magnetorheological fluid (3-3). The connecting shaft on the excitation coil (3-4) passes through the bearing (3-2), and one end of the connecting shaft is connected to the floating plate (3-1). The floating plate (3-1) is located above the liquid filled in the U-shaped cavity.

2. The circumferential MRD-TLCD shock absorption device applied to the inside of a wind power tower barrel according to claim 1, wherein It also includes a lower partition board (2-4). The lower partition board (2-4) is arranged on the inner sealing bottom plate (2-5) and the outer sealing bottom plate (2-6), and the lower partition board (2-4) is immersed in the filling liquid of the U-shaped cavity.

3. The circumferential MRD-TLCD shock absorption device applied to the inside of a wind power tower barrel according to claim 2, characterized in that The lower partition board (2-4) is located below the upper partition board (2-3).

4. The circumferential MRD-TLCD shock absorption device applied to the inside of a wind power tower barrel according to claim 3, wherein The number of the upper partition boards (2-3) and the lower partition boards (2-4) is 6-8. The upper partition boards (2-3) are evenly distributed along the circumferential direction of the outer wall of the TLCD outer wall barrel (2-2). The upper partition boards (2-3) are located between the TLCD inner wall barrel (2-1) and the TLCD outer wall barrel (2-2), and the cavity between the TLCD inner wall barrel (2-1) and the TLCD outer wall barrel (2-2) is equally divided. Multiple lower partition boards (2-4) are spliced into a radial insertion plate, and the lower partition board (2-4) secondarily divides the lower cavity of the independent cavity unit.

5. The circumferential MRD-TLCD damping device applied to the inside of a wind power tower barrel according to claim 4, characterized in that There are 2 groups of the radial insertion plates, and the 2 groups of radial insertion plates are connected to the inner sealing bottom plate (2-5) and the outer sealing bottom plate (2-6).

6. The circumferential MRD-TLCD shock absorption device applied to the inside of a wind power tower barrel according to claim 1, wherein A gasket (4) is arranged on the inner wall of the TLCD inner wall barrel (2-1). Connecting holes are opened on the gasket (4), the TLCD inner wall barrel (2-1) and the TLCD outer wall barrel (2-2), and the connecting holes are connected to the tower barrel (1) through bolts (5).

7. The circumferential MRD-TLCD shock absorption device applied to the inside of a wind power tower barrel according to claim 1, characterized in that The model of the pressure accumulator (3-6) is GXQ-0.25L / 21.

8. The circumferential MRD-TLCD damping device applied to the inside of a wind power tower barrel according to claim 1, wherein The joint where the TLCD component (2) and the MRD component (3) are plugged and connected is bonded with sealant, and the MRD component (3) seals the U-shaped cavity through bonding with sealant.

Images