A wind power tower with energy dissipation device

Abstract

The present invention relates to the field of wind power technology, and discloses a wind power tower with a self-contained energy dissipation device, comprising: a lower tower, an upper tower, a plurality of energy dissipation chain rods, a plurality of vertical springs and a plurality of horizontal springs, wherein the upper tower is sleeved on the outer side of the lower tower, the two ends of the energy dissipation chain rod are respectively connected to the outer walls of the lower tower and the upper tower, the vertical spring is arranged between the lower tower and the upper tower in the vertical direction, and the horizontal spring is arranged between the lower tower and the upper tower in the horizontal direction. The present invention adopts an energy dissipation structure composed of a plurality of energy dissipation chain rods, a plurality of vertical springs and a plurality of horizontal springs, and reduces the horizontal wind vibration caused by the fan and the cylinder body bearing the horizontal wind load, and the vertical vibration energy caused by the fan rotating in the vertical plane, which is transmitted from the upper part of the wind power structure to the foundation through the plurality of vertical springs and horizontal springs arranged in the tower body, and the plurality of energy dissipation chain rods outside the tower body, thereby achieving the purpose of protecting the wind power foundation and extending the service life of the foundation.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and more particularly to a wind power tower with a built-in energy consumption device. Background Art

[0002] The wind power industry is a recyclable new energy industry. Vigorously developing the wind power industry is of great significance to adjusting the energy structure, promoting the revolution in energy production and consumption, and promoting the construction of ecological civilization. In recent years, with the strong support of national policies, my country's wind power industry has entered a golden period, with rapid development of manufacturing technology and production capacity, and accumulation of technology and production experience. Especially in the context of increasingly serious contradictions between energy supply and demand and rising electricity demand in China, the wind power industry has developed rapidly.

[0003] Wind power generation is one of the more mature technologies for renewable energy utilization. my country is rich in wind energy resources. At present, the installed capacity of wind power ranks first in the world, and the installed capacity of wind power generation has reached 200GW. Due to the relatively harsh working environment of wind turbines, cracks between towers and foundations, fatigue fractures of tower bodies, fatigue loosening of bolts, and instability and collapse of tower bodies are common. Every year, these problems cause huge economic losses, restrict people's development and utilization of wind energy, and hinder the realization of some energy strategic goals such as energy conservation and emission reduction, and low-carbon environmental protection. As the support of wind turbines, wind power towers will threaten the safety of the entire wind turbine, blades and other related equipment once damaged. Among them, the problems in the connection between the steel tower body and the foundation are more prominent.

[0004] The connection between the steel tower body and the foundation is the top priority in wind power structure. In my country, there are currently two main ways to connect the wind power tower body and the foundation - foundation ring connection and prestressed anchor bolt connection. The foundation ring connection is to pre-embed a steel foundation ring in the reinforced concrete foundation, and the upper tower body is then connected to the foundation ring through flanges and other methods; the prestressed anchor bolt connection is to bury a prestressed anchor bolt cage in the reinforced concrete foundation, and the upper tower body is then connected to the prestressed anchor bolt cage.

[0005] The loads borne by the wind turbine structure foundation mainly include two categories: the first category is the deadweight of the upper structure, which is a static load; the second category is the horizontal wind vibration caused by the horizontal wind load borne by the fan and the barrel, and the vertical vibration caused by the rotation of the fan in the vertical plane, which is a fatigue load. The second category of loads mainly have a greater impact on the wind turbine foundation and even cause the foundation to fail. During the long-term operation of the wind turbine structure, for the foundation ring foundation, the above fatigue loads are likely to cause the foundation concrete to crack or partially collapse, causing the foundation ring and the foundation concrete to loosen and form gaps (see attached Fig.11 ) and through cracks appear between the inner and outer foundation concrete of the foundation ring (see attached Fig.12), which leads to foundation failure; for prestressed anchor foundation, the above fatigue load is likely to cause prestress loss or even anchor failure, which leads to foundation failure.

[0006] Therefore, it is necessary to propose a wind power tower with its own energy dissipation device to at least partially solve the problem of foundation failure due to fatigue load in wind power generation structures. Summary of the invention

[0007] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0008] In order to at least partially solve the above problems, the present invention provides a wind power tower with a self-contained energy dissipation device, comprising:

[0009] A lower tower, an upper tower, a plurality of energy-absorbing chain rods, a plurality of vertical springs and a plurality of horizontal springs. The upper tower is sleeved on the outside of the lower tower. The two ends of the energy-absorbing chain rod are respectively connected to the outer walls of the lower tower and the upper tower. The vertical springs are arranged between the lower tower and the upper tower in the vertical direction. The horizontal springs are arranged between the lower tower and the upper tower in the horizontal direction.

[0010] Preferably, the lower tower tube includes: a lower tower tube body, an annular plate, a reaction tube, a lower reaction ring plate, a lower ear plate and a bottom flange. The inner side of the upper opening of the lower tower tube body is connected to the annular plate, the top surface of the annular plate is connected to the reaction tube, the outer wall of the lower tower tube body is provided with a plurality of lower ear plates evenly distributed along the circumferential direction, the lower opening of the lower tower tube body is connected to the bottom flange, the bottom flange is provided with a plurality of bolt holes along the circumferential direction, and the diameter of the reaction tube is smaller than the diameter of the lower tower tube body.

[0011] Preferably, the upper tower comprises: an upper tower body, an upper reaction ring plate and a plurality of upper ear plates, the outer periphery of the upper reaction ring plate is connected to the inner wall of the upper tower body, and the outer wall of the upper tower body is evenly distributed with a plurality of upper ear plates along the circumferential direction.

[0012] Preferably, one end of the plurality of energy-absorbing chain rods is connected to the plurality of lower ear plates in a one-to-one correspondence, and the other end is connected to the plurality of upper ear plates in a one-to-one correspondence.

[0013] Preferably, the upper ends of several vertical springs are connected to the bottom surface of the upper reaction ring plate, and the lower ends are connected to the top surface of the lower reaction ring plate; one end of several horizontal springs is connected to the outer wall of the reaction cylinder, and the other end is connected to the inner wall of the upper tower cylinder.

[0014] Preferably, the plurality of vertical springs and the plurality of horizontal springs are evenly arranged along the circumferential direction of the reaction cylinder, and the vertical springs and the horizontal springs are staggered with each other.

[0015] Preferably, a gap is provided between the outer wall of the reaction cylinder and the inner periphery of the upper reaction ring plate, and a gap is provided between the outer periphery of the lower reaction ring plate and the inner wall of the upper tower body, so as to reserve relative movement space for the lower tower and the upper tower in the horizontal direction.

[0016] Preferably, a gap is provided between the upper opening of the upper tower body and the lower opening of the lower tower body, so as to reserve space for relative movement of the lower tower and the upper tower in the vertical direction.

[0017] Preferably, the gap between the outer wall of the reaction tube and the inner periphery of the upper reaction ring plate, and the gap between the outer periphery of the lower reaction ring plate and the inner wall of the upper tower tube body are set to 0.5 cm.

[0018] Preferably, the gap between the upper opening of the upper tower body and the lower opening of the lower tower body is set to 1 cm.

[0019] Preferably, a flexible sealing device is connected to the upper end of the lower tower body, and the flexible sealing device includes:

[0020] A support ring is connected to the top of the lower tower barrel, and lower ring bodies are connected to the two sides of the bottom of the support ring. The lower tower barrel is sandwiched between the two lower ring bodies and connected by bolts. An oblique support plate is connected between the support ring and the lower ring body.

[0021] A flexible sealing pad is connected to the top of the support ring and is in a U shape, and is arranged around the lower opening of the upper tower barrel;

[0022] Preferably, an auxiliary energy consumption unit is provided in the flexible sealing pad, and the auxiliary energy consumption unit includes:

[0023] The annular air storage cavity is arranged at the center of the flexible sealing pad, and the annular air storage cavity contains pre-pressurized gas. The air inlet end of the annular air storage cavity is connected to the body, and when the air pressure in the annular air storage cavity is lower than a preset value, air is automatically inflated inside the annular air storage cavity;

[0024] Energy-consuming reset chamber, the flexible sealing pad is provided with a plurality of energy-consuming reset chamber groups along the circumferential direction, each energy-consuming reset chamber group includes two energy-consuming reset chambers, and are symmetrically arranged on both sides of the flexible sealing pad;

[0025] The air guide tube is connected to the energy-consuming reset cavity and is concentrically arranged with the flexible sealing pad. The air guide tube is evenly connected with multiple auxiliary energy-consuming components along the circumferential direction. Each auxiliary energy-consuming component is respectively located in each energy-consuming reset cavity. The air guide tube is connected to the air outlet end of the annular air storage cavity through an air transmission pipeline.

[0026] Preferably, the auxiliary energy consumption component includes:

[0027] A guide tube, the guide tube is connected to one side of the air guide tube close to the center of the flexible sealing pad, and at least two guide tubes are provided;

[0028] A guide post, the guide post is slidably connected in the guide tube and extends to the center of the flexible sealing pad;

[0029] A support plate is connected to the end of the guide column. The support plate is arranged in an arc shape and fits on one side of the energy-consuming reset cavity close to the center of the flexible sealing pad. A spring is sleeved on the guide column and the guide tube, and both ends of the spring are respectively connected to the support plate and the air guide tube.

[0030] Preferably, a flow regulating component is provided in the energy dissipation reset chamber, and the flow regulating component includes:

[0031] An on-off valve pipe, which is horizontally connected to the gas pipeline and is located in the energy-consuming reset chamber;

[0032] The on-off rod is slidably connected in the on-off valve tube. A cut-off portion and a flow regulating portion are provided on the on-off rod. The cut-off portion is provided at one end of the on-off rod and is directly connected to the end of the on-off valve tube with a reset spring. The cut-off portion blocks the gas pipeline. The flow regulating portion is connected between the cut-off portion and the on-off rod body to form an inclined surface. The width of the on-off rod is smaller than the diameter of the gas pipeline. The other end of the on-off rod abuts against the support plate.

[0033] Preferably, a pressure relief component is provided in the air guide tube, and the pressure relief component includes:

[0034] A pressure relief pipe, which is connected to a side of the air guide pipe away from the center of the flexible sealing pad and is directly opposite to any one of the guide pipes, and a pressure relief valve is arranged in the pressure relief pipe;

[0035] The blocking rod is connected to the center of the guide column. When the guide column moves, the blocking rod can extend into the pressure relief pipe to block it.

[0036] Preferably, the auxiliary energy consumption unit further includes:

[0037] The sealing plate, the bottom end of which is connected to the center of the flexible sealing pad and is located above the annular air storage cavity, the top end of which is in contact with the lower opening of the upper tower barrel, and inclined surfaces are provided on both sides of the bottom end of the sealing plate;

[0038] A follower rod, the follower rod is horizontally arranged on the side wall of the energy dissipation reset chamber, the connection position between the energy dissipation reset chamber and the follower rod is set to be rigid, one end of the follower rod extends under the sealing plate, and the wedge block at the end of the follower rod is slidably connected with the inclined surface of the sealing plate;

[0039] The paddle is hinged to the other end of the follower rod, and damping plates are arranged on both sides of the paddle to limit the rotation of the paddle. The paddle is located on the moving path of the support plate.

[0040] Preferably, the flexible sealing device further comprises:

[0041] A reinforcement ring is concentrically arranged on the outside of the flexible sealing pad. The reinforcement ring is evenly arranged with multiple heat shrink sections along the circumferential direction. The length of the heat shrink section becomes shorter after heating. The heat shrink section is arranged in the expansion joint. The middle part of the heat shrink section is fixed to the middle part of the expansion joint. An electric heating wire for heating the heat shrink section is arranged in the expansion joint. The expansion joint is connected to the flexible sealing pad.

[0042] Compared with the prior art, the present invention has at least the following beneficial effects:

[0043] The wind power tower with its own energy dissipation device provided by the present invention adopts a horizontal spring arranged between a reaction cylinder and an upper tower cylinder body to reduce the vibration energy transmitted to the foundation by horizontal wind vibration caused by the horizontal wind load borne by the fan and the cylinder body;

[0044] A vertical spring arranged between the bottom surface of the upper reaction ring plate and the top surface of the lower reaction ring plate, and an energy-absorbing chain rod respectively connected to the upper ear plate and the lower ear plate at both ends are used to reduce the vibration energy transmitted to the foundation by the vertical vibration caused by the rotation of the fan in the vertical plane.

[0045] The present invention provides a wind turbine tower with its own energy dissipation device, which reduces the horizontal wind vibration caused by the fan and the barrel bearing horizontal wind loads, and the vertical vibration energy caused by the fan rotating in the vertical plane, which are transmitted from the upper part of the wind turbine structure to the foundation through the energy dissipation device placed in the tower barrel and the energy dissipation support outside the tower barrel. This reduces the horizontal wind vibration caused by the fan and the barrel bearing horizontal wind loads, and the vertical vibration energy caused by the fan rotating in the vertical plane, thereby achieving the purpose of protecting the wind turbine foundation and extending the service life of the foundation.

[0046] The other advantages, objectives and features of the wind power tower with its own energy dissipation device described in the present invention will be partially reflected in the following description, and will also be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0048] Figure 1 A front view of a wind power tower provided with an energy consumption system according to the present invention;

[0049] Figure 2 A top view of a wind power tower provided with an energy consumption system according to the present invention;

[0050] Figure 3 It is a schematic diagram of the installation structure of the flexible sealing device and the reinforcement ring in the present invention;

[0051] Figure 4 is a schematic diagram of the cross-sectional structure of the flexible sealing gasket in the present invention;

[0052] Figure 5It is a schematic diagram of the structure of the air guide pipe and the support plate in the present invention;

[0053] Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at point A in the middle;

[0054] Figure 7 It is a schematic diagram of the cross-sectional structure of the flow regulating component in the present invention;

[0055] Figure 8 This is a schematic diagram of the cross-sectional structure of the flexible sealing pad after the sealing plate is installed in the present invention;

[0056] Fig. 9 It is a schematic diagram of the structure of the reinforcement ring in the present invention;

[0057] Fig.10 For the present invention Fig. 9 A schematic diagram of the local enlarged structure at B in the middle;

[0058] Fig.11 This is a physical picture of the gap between the wind tower foundation ring and the foundation concrete;

[0059] Fig.12 This is a physical picture of the through cracks that appear between the inner and outer foundation concrete of the wind tower foundation ring.

[0060] In the figure: 1. Lower tower; 2. Upper tower; 3. Energy-absorbing chain rod; 4. Vertical spring; 5. Horizontal spring; 6. Lower tower body; 7. Annular plate; 8. Reaction cylinder; 9. Lower reaction ring plate; 10. Lower ear plate; 11. Upper tower body; 12. Upper reaction ring plate; 13. Upper ear plate; 14. Bottom flange; 21. Support ring; 22. Lower ring body; 23. Oblique support plate; 24. Flexible sealing pad; 25. Annular air storage cavity; 26. Energy-dissipating reset chamber; 27. Air guide tube; 28. Guide tube; 29. ​​Guide column; 31. Support plate; 32. Air pipeline; 33. On-off valve tube; 34. On-off rod; 35. Reset spring; 36. Cut-off part; 37. Flow regulating part; 38. Pressure relief pipe; 39. Pressure relief valve; 40. Blocking rod; 41. Sealing plate; 42. Follower rod; 43. Wedge block; 44. Pick; 45. Reinforcement ring; 46. Heat shrink section; 47. Telescopic joint. DETAILED DESCRIPTION

[0061] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0062] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0063] Embodiment 1:

[0064] like Figure 1 , 2 As shown, the present invention provides a wind power tower with a built-in energy dissipation device, comprising:

[0065] A lower tower 1, an upper tower 2, a plurality of energy-absorbing chain rods 3, a plurality of vertical springs 4 and a plurality of horizontal springs 5. The upper tower 2 is sleeved on the outside of the lower tower 1. The two ends of the energy-absorbing chain rod 3 are respectively connected to the outer walls of the lower tower 1 and the upper tower 2. The vertical spring 4 is arranged between the lower tower 1 and the upper tower 2 in the vertical direction. The horizontal spring 5 is arranged between the lower tower 1 and the upper tower 2 in the horizontal direction.

[0066] The lower tower 1 includes: a lower tower body 6, an annular plate 7, a reaction cylinder 8, a lower reaction ring plate 9, a lower ear plate 10 and a bottom flange 14. The inner side of the upper opening of the lower tower body 6 is connected to the annular plate 7, and the top surface of the annular plate 7 is connected to the reaction cylinder 8. The outer wall of the lower tower body 6 is evenly distributed with a plurality of lower ear plates 10 along the circumferential direction. The lower opening of the lower tower body 6 is connected to the bottom flange 14. The bottom flange 14 is provided with a plurality of bolt holes 15 along the circumferential direction. The diameter of the reaction cylinder 8 is smaller than the diameter of the lower tower body 6.

[0067] The upper tower 2 comprises: an upper tower body 11, an upper reaction ring plate 12 and a plurality of upper ear plates 13. The outer periphery of the upper reaction ring plate 12 is connected to the inner wall of the upper tower body 11. The outer wall of the upper tower body 11 has a plurality of upper ear plates 13 evenly distributed along the circumferential direction.

[0068] One end of the plurality of energy dissipation chain rods 3 is connected to the plurality of lower ear plates 10 in a one-to-one correspondence, and the other end is connected to the plurality of upper ear plates 13 in a one-to-one correspondence.

[0069] The upper ends of a plurality of vertical springs 4 are connected to the bottom surface of the upper reaction ring plate 12 , and the lower ends are connected to the top surface of the lower reaction ring plate 9 ; one end of a plurality of horizontal springs 5 ​​is connected to the outer wall of the reaction cylinder 8 , and the other end is connected to the inner wall of the upper tower cylinder body 11 .

[0070] A plurality of vertical springs 4 and a plurality of horizontal springs 5 ​​are evenly arranged along the circumferential direction of the reaction cylinder 8, and the vertical springs 4 and the horizontal springs 5 ​​are staggered with each other.

[0071] A gap is provided between the outer wall of the reaction tube 8 and the inner periphery of the upper reaction ring plate 12, and a gap is provided between the outer periphery of the lower reaction ring plate 9 and the inner wall of the upper tower tube body 11, which is used to reserve relative movement space for the lower tower tube 1 and the upper tower tube 2 in the horizontal direction. The gap is preferably set to 0.5 cm.

[0072] A gap is provided between the upper end of the upper tower body 11 and the lower end of the lower tower body 6 to reserve a relative movement space for the lower tower 1 and the upper tower 2 in the vertical direction, preferably set to 1 cm.

[0073] The working principle and beneficial effects of the above technical solution are:

[0074] A wind power tower with its own energy dissipation device, the specific construction steps at the construction site are as follows:

[0075] The first step is to hoist the lower tower 1 to the predetermined installation position, connect the lower tower 1 to the foundation ring or prestressed anchor cage in the foundation through the bottom flange 14, and correct the verticality at the same time. After the connection is completed and waterproofing is done, install the horizontal spring 5 on the outer wall of the lower reaction cylinder 8, and install the vertical spring 4 on the lower reaction ring plate 9;

[0076] The second step is to hoist the upper tower 2, lift the upper tower 2 and insert its lower part into the outer periphery of the lower tower 1, install the horizontal spring 5 and the upper tower body 11, install the vertical spring 4 and the upper reaction ring plate 12, correct the verticality at the same time, and temporarily fix it with a support;

[0077] The third step is to install the energy dissipation chain rods 3, connect one end of the energy dissipation chain rods 3 to the lower ear plates 10 one by one, and connect the other end to the upper ear plates 13 one by one;

[0078] The fourth step is to perform flexible sealing treatment on the gap between the upper end of the upper tower body 11 and the lower end of the lower tower body 6;

[0079] Step 5: Remove the temporary fixed support and complete the construction.

[0080] When the wind power tower is in use, a horizontal spring 5 is used between the reaction cylinder 8 and the upper tower cylinder body 11 to reduce the vibration energy transmitted to the foundation by the horizontal wind vibration caused by the fan and the cylinder body bearing the horizontal wind load;

[0081] A vertical spring 4 arranged between the bottom surface of the upper reaction ring plate 12 and the top surface of the lower reaction ring plate 9, and an energy-absorbing chain rod 3 whose two ends are respectively connected to the upper ear plate 13 and the lower ear plate 10 are used to reduce the vibration energy transmitted to the foundation by the vertical vibration caused by the rotation of the fan in the vertical plane.

[0082] Through the above structural design, a wind turbine tower with a built-in energy dissipation device is provided. Through the energy dissipation device placed in the tower barrel and the energy dissipation support outside the tower barrel, the horizontal wind vibration caused by the horizontal wind load borne by the fan and the barrel and the vertical vibration energy caused by the rotation of the fan in the vertical plane transmitted from the upper part of the wind turbine structure to the foundation are reduced, thereby achieving the purpose of protecting the wind turbine foundation and extending the service life of the foundation.

[0083] Embodiment 2:

[0084] like Figure 3 As shown, on the basis of the above-mentioned embodiment 1, the upper opening of the lower tower body 6 is connected with a flexible sealing device, and the flexible sealing device includes:

[0085] A support ring 21, the support ring 21 is connected to the top of the lower tower barrel 6, and lower ring bodies 22 are connected to the two sides of the bottom of the support ring 21. The lower tower barrel 6 is sandwiched between the two lower ring bodies 22 and connected by bolts. An oblique support plate 23 is connected between the support ring 21 and the lower ring body 22;

[0086] A flexible sealing pad 24, which is connected to the top of the support ring 21 and is in a U shape. The flexible sealing pad 24 surrounds the lower opening of the upper tower body 11;

[0087] The working principle and beneficial effects of the above technical solution are:

[0088] There is a gap between the upper opening of the upper tower body 11 and the lower opening of the lower tower body 6, and a flexible seal is set at the gap to prevent airflow and dust from entering. When the flexible sealing device is used, the support ring 21 is installed on the top of the lower tower body 6, and the lower tower body 6 is clamped between the two lower ring bodies 22, and then the lower ring body 22 is connected to the lower tower body 6 by bolts; then the upper tower 2 is installed above the lower tower 1, so that the upper tower body 11 is installed in the U-shaped groove formed by the flexible sealing pad 24, and the two sides of the flexible sealing pad 24 are in contact with the inner and outer sides of the upper tower body 11 to seal the gap. The use of the flexible sealing pad 24 can further achieve buffering and shock absorption of the upper tower 2.

[0089] Embodiment 3:

[0090] like Figure 4-6 As shown, on the basis of the above-mentioned embodiment 2, an auxiliary energy consumption unit is provided in the flexible sealing pad 24, and the auxiliary energy consumption unit includes:

[0091] The annular air storage chamber 25 is arranged at the center of the flexible sealing pad 24. The annular air storage chamber 25 contains pre-pressurized gas. The air inlet end of the annular air storage chamber 25 is connected to the body. When the air pressure in the annular air storage chamber 25 is lower than a preset value, air is automatically inflated therein;

[0092] Energy dissipation reset cavity 26, the flexible sealing pad 24 is provided with a plurality of energy dissipation reset cavity groups along the circumferential direction, each energy dissipation reset cavity group includes two energy dissipation reset cavities 26, and are symmetrically arranged on both sides of the flexible sealing pad 24;

[0093] The air guide tube 27 is connected to the energy dissipation reset cavity 26 and is concentrically arranged with the flexible sealing pad 24. The air guide tube 27 is evenly connected with a plurality of auxiliary energy dissipation components along the circumferential direction. Each auxiliary energy dissipation component is respectively located in each energy dissipation reset cavity 26. The air guide tube 27 is connected to the gas outlet end of the annular gas storage cavity 25 through the gas transmission pipeline 32;

[0094] Auxiliary energy consumption components include:

[0095] A guide tube 28, the guide tube 28 is connected to one side of the air guide tube 27 close to the center of the flexible sealing pad 24, and at least two guide tubes 28 are provided;

[0096] A guide post 29, the guide post 29 is slidably connected in the guide tube 28 and extends toward the center of the flexible sealing pad 24;

[0097] A support plate 31 is connected to the end of the guide column 29. The support plate 31 is arranged in an arc shape and fits on one side of the energy dissipation reset cavity 26 close to the center of the flexible sealing pad 24. A spring is sleeved on the guide column 29 and the guide tube 28, and the two ends of the spring are respectively connected to the support plate 31 and the air guide tube 27.

[0098] The working principle and beneficial effects of the above technical solution are:

[0099] An auxiliary energy-absorbing unit is arranged in the flexible sealing pad 24. When the flexible sealing pad is in use, the upper tower barrel 11 is installed in the U-shaped groove formed in the center of the flexible sealing pad 24. The flexible sealing pad 24 maintains a certain pressure on the upper tower barrel 11 without separation. The two sides of the annular air storage cavity 25 are subjected to close forces, and the support plates 31 on both sides are subjected to close forces. When the upper tower barrel 11 is vibrated to tilt inward on this side, the upper tower barrel 11 applies pressure to the inner flexible sealing pad 24, that is, applies pressure to the inner support plate 31, pushing the support plate 31 to move inward, and the support plate 31 drives the guide column 29 to slide in the guide tube 28, and the guide column 29 forms a piston structure in the guide tube 28; at this time, the gas pipeline 32 is connected, and the pre-pressurized gas in the gas storage chamber 25 is transported to the air guide tube 27 through the gas pipeline 32, and enters the guide tube 18, pushing the guide column 29 to slide outward, and the support plate 31 moves outward under the thrust of the spring and gas, pushing the upper tower barrel 11 to reset. Through the above-mentioned structural design, while ensuring the sealing of the gap between the upper tower barrel 11 and the lower tower barrel 6, the horizontal vibration of the upper tower barrel 11 is further reduced, the seismic resistance of the wind power tower is improved, it has self-resetting ability, and reduces the tilt deformation of the upper tower barrel 11. A plurality of auxiliary energy-dissipating components are arranged in the circumferential direction of the flexible sealing pad 24, so that when the wind power tower is vibrated in various directions, the auxiliary energy-dissipating components can respond in time, and the energy-dissipating effect is better.

[0100] Embodiment 4:

[0101] like Figure 7 As shown, on the basis of the above-mentioned embodiment 3, a flow regulating component is provided in the energy dissipation reset chamber 26, and the flow regulating component includes:

[0102] The on-off valve tube 33 is horizontally connected to the gas pipeline 32 and is located in the energy-consuming reset chamber 26;

[0103] The on-off rod 34 is slidably connected in the on-off valve tube 33. A shutoff portion 36 and a flow regulating portion 37 are provided on the on-off rod 34. The shutoff portion 36 is provided at one end of the on-off rod 34 and is directly connected to the end of the on-off valve tube 33 with a return spring 35. The shutoff portion 36 blocks the gas pipeline 32. The flow regulating portion 37 is connected between the shutoff portion 36 and the main body of the on-off rod 34 to form an inclined surface. The width of the on-off rod 34 is smaller than the diameter of the gas pipeline 32. The other end of the on-off rod 34 abuts against the support plate 31.

[0104] The working principle and beneficial effects of the above technical solution are:

[0105] A flow regulating assembly is arranged in the energy dissipation reset chamber 26. When the support plate 31 moves inward, the on-off rod 34 is pushed to slide in the on-off valve tube 33, and the cut-off portion 36 on the on-off rod 34 is separated from the gas pipeline 32, so that the flow regulating portion 37 faces the gas pipeline 32. According to the different inclination angles of the upper tower barrel 11 and the different moving distances of the support plate 31, different positions of the flow regulating portion 32 face the gas pipeline 32. Since the side surface of the flow regulating portion 32 is set as an inclined surface, the gas can flow through the gas pipeline 32. The air flow rates of the upper tower body 11 and the lower tower body 11 are different, which plays a role in flow regulation; the greater the inclination angle of the upper tower body 11, the greater the air flow rate, the greater the air pressure in the air guide pipe 27, and the greater thrust is provided for the restoration of the upper tower body 11, thereby improving the energy-consuming restoration effect of the flexible sealing pad 24; when the support plate 31 drives the upper tower body 11 to be restored, the on-off rod 34 is restored under the action of the reset spring 35, so that the cut-off part 36 returns to the position of the gas pipeline 32, and the gas pipeline 32 is re-blocked.

[0106] Embodiment 5:

[0107] like Figure 4-6 As shown, based on the above-mentioned embodiment 3, a pressure relief component is provided in the air guide pipe 27, and the pressure relief component includes:

[0108] A pressure relief pipe 38, which is connected to a side of the air guide pipe 27 away from the center of the flexible sealing pad 24 and directly faces any one of the guide pipes 28, and a pressure relief valve 39 is provided in the pressure relief pipe 38;

[0109] The blocking rod 40 is connected to the center of the guide column 29. When the guide column 29 moves, the blocking rod 40 can extend into the pressure relief pipe 38 to block it.

[0110] The working principle and beneficial effects of the above technical solution are:

[0111] When the support plate 31 moves inward, the blocking rod 40 is driven to move synchronously through the guide column 29, and the blocking rod 40 enters the pressure relief pipe 38 to block the pressure relief pipe 38. At this time, pressure relief will not occur due to excessive air pressure in the air pipe 27, which is used to ensure the reset action; when the support plate 31 is reset, the blocking rod 40 is separated from the pressure relief pipe 38. At this time, the gas transmission pipeline 32 is in a blocked state, and the excess gas in the air pipe 27 flows out through the pressure relief pipe 38, so that the air pressure in the air pipe 27 returns to the initial state, ensuring that the air pressure in the air pipe 27 on both sides of the upper tower barrel 11 is equal, that is, the supporting force provided by the support plates 31 on both sides is equal, so that the inner and outer sides of the upper tower barrel 11 are always kept in a balanced state, avoiding the impact of the internal pressure imbalance of the flexible sealing pad 24 on the installation of the upper and lower towers of the wind turbine.

[0112] Embodiment 6:

[0113] like Figure 8 As shown, based on the above embodiment 2, the auxiliary energy consumption unit also includes:

[0114] Sealing plate 41, the bottom end of the sealing plate 31 is connected to the center of the flexible sealing pad 24 and is located above the annular air storage cavity 25, the top end of the sealing plate 41 is in contact with the lower end of the upper tower barrel 11, and inclined surfaces are provided on both sides of the bottom end of the sealing plate 41;

[0115] A follower rod 42, the follower rod 42 is horizontally arranged on the side wall of the energy dissipation reset chamber 26, the connection position between the energy dissipation reset chamber 26 and the follower rod 43 is set to be rigid, one end of the follower rod 42 extends under the sealing plate 41, and the wedge block 43 at the end of the follower rod 42 is slidably connected with the inclined surface of the sealing plate 41;

[0116] The paddle 44 is hinged to the other end of the follower rod 42 , and damping plates are arranged on both sides of the paddle 44 to limit the rotation of the paddle 44 . The paddle 44 is located on the moving path of the support plate 31 .

[0117] The working principle and beneficial effects of the above technical solution are:

[0118] A sealing plate 41 is arranged in the U-shaped groove at the center of the flexible sealing pad 24. When the supporting plate 31 moves inwardly, it contacts with the paddle 44 and pushes the paddle 44 to deflect inwardly, and the damping plate on the inside is compressed and deformed. After the supporting plate 31 passes over the paddle 44, the paddle 44 is reset under the elastic action of the damping plate; when the supporting plate 31 is reset outwardly, it contacts with the paddle 44 and pushes the paddle 44 to deflect outwardly. The resistance of the damping plate on the outside is relatively large, and the supporting plate 31 drives the paddle 44 to move outward, thereby pulling the follower rod 42 to slide outward, and the wedge block 43 slides relative to the inclined surface at the bottom of the sealing plate 41 to push the sealing plate 41 upward until the sealing plate 41 contacts with the upper tower barrel 11 and cannot move. The supporting plate 31 pushes the paddle 44 to deflect outwardly, causing the damping plate on the outside to be compressed and deformed, and the supporting plate 31 passes over the paddle 44, and the paddle 44 is reset under the elastic action of the damping plate.

[0119] Through the above-mentioned structural design, when the support plate 31 pushes the upper tower body 11 to reset, it can simultaneously drive the sealing plate 41 to move upward so that it is tightly attached to the upper tower body 11, thereby solving the problem that after the air pressure in the annular air storage chamber 25 is reduced, it cannot be tightly attached to the lower mouth of the upper tower body 11, thereby ensuring the reliability of the sealing of the bottom end of the upper tower body 11.

[0120] Embodiment 7:

[0121] like Figure 3 , 9 As shown in 10, based on the above-mentioned embodiment 2, the flexible sealing device further includes:

[0122] A reinforcement ring 45 is concentrically arranged on the outside of the flexible sealing pad 24. The reinforcement ring 45 is evenly arranged with multiple heat shrinkable sections 46 along the circumferential direction. The heat shrinkable sections 46 become shorter after being heated. The heat shrinkable sections 46 are arranged in the expansion joint 47. The middle part of the heat shrinkable sections 46 is fixed to the middle part of the expansion joint 47. An electric heating wire for heating the heat shrinkable sections 46 is arranged in the expansion joint 46. The expansion joint 46 is connected to the flexible sealing pad 24.

[0123] The working principle and beneficial effects of the above technical solution are:

[0124] A reinforcement ring 45 is arranged outside the flexible sealing pad 24, and the inclination angle of the upper tower barrel 11 is detected by a sensor. When the inclination angle reaches a preset value and there is a tendency to tilt and break, the electric heating wire in the telescopic joint 46 is energized, so that the heat shrink section 46 shortens after being heated, and the diameter of the entire reinforcement ring 45 becomes smaller. The upper part of the flexible sealing pad 24 is firmly tied to the upper tower barrel 11, and the lower part is firmly tied to the support ring 21, thereby reinforcing the connection between the upper and lower towers, preventing the tilt and break tendency of the upper tower barrel 11, and reserving time for maintenance personnel, thereby improving the safety of the wind turbine tower. By setting a plurality of heat shrink sections 46 instead of making the reinforcement ring 45 entirely of heat shrink material, it is convenient to heat the heat shrink section 46, ensure the uniformity of deformation of the reinforcement ring 45, and greatly reduce the manufacturing cost.

[0125] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0126] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0127] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A wind power tower with its own energy dissipation device, characterized in that: include: A lower tower (1), an upper tower (2), a plurality of energy-absorbing chain rods (3), a plurality of vertical springs (4) and a plurality of horizontal springs (5); the upper tower (2) is sleeved on the outer side of the lower tower (1); two ends of the energy-absorbing chain rod (3) are respectively connected to the outer walls of the lower tower (1) and the upper tower (2); the vertical springs (4) are arranged between the lower tower (1) and the upper tower (2) in a vertical direction; and the horizontal springs (5) are arranged between the lower tower (1) and the upper tower (2) in a horizontal direction; The lower tower (1) comprises: a lower tower body (6), an annular plate (7), a reaction cylinder (8), a lower reaction ring plate (9), a lower ear plate (10) and a bottom flange (14); the inner side of the upper opening of the lower tower body (6) is connected to the annular plate (7); the top surface of the annular plate (7) is connected to the reaction cylinder (8); the outer wall of the lower tower body (6) is evenly distributed with a plurality of lower ear plates (10) along the circumferential direction; the lower opening of the lower tower body (6) is connected to the bottom flange (14); the bottom flange (14) is provided with a plurality of bolt holes (15) along the circumferential direction; and the diameter of the reaction cylinder (8) is smaller than the diameter of the lower tower body (6); The upper tower (2) comprises: an upper tower body (11), an upper reaction ring plate (12) and a plurality of upper ear plates (13); the outer periphery of the upper reaction ring plate (12) is connected to the inner wall of the upper tower body (11); and the outer wall of the upper tower body (11) is provided with a plurality of upper ear plates (13) evenly distributed along the circumferential direction; The upper opening of the lower tower barrel (6) is connected with a flexible sealing device, and the flexible sealing device comprises: A support ring (21), the support ring (21) is connected to the top of the lower tower barrel (6), the lower ring bodies (22) are connected to both sides of the bottom of the support ring (21), the lower tower barrel (6) is sandwiched between the two lower ring bodies (22) and connected by bolts, and an oblique support plate (23) is connected between the support ring (21) and the lower ring body (22); A flexible sealing pad (24), the flexible sealing pad (24) is connected to the top of the support ring (21) and is in a U shape, and the flexible sealing pad (24) is arranged around the lower opening of the upper tower barrel (11); A reinforcement ring (45) is concentrically arranged on the outside of the flexible sealing pad (24). The reinforcement ring (45) is evenly arranged with a plurality of heat shrinkable sections (46) along the circumferential direction. The heat shrinkable sections (46) are shortened after being heated. The heat shrinkable sections (46) are arranged in the expansion joint (47). The middle part of the heat shrinkable section (46) is fixed to the middle part of the expansion joint (47). An electric heating wire for heating the heat shrinkable section (46) is arranged in the expansion joint (47). The expansion joint (47) is connected to the flexible sealing pad (24).

2. A wind power tower with a built-in energy dissipation device according to claim 1, characterized in that: One end of the plurality of energy-absorbing chain rods (3) is connected to the plurality of lower ear plates (10) in a one-to-one correspondence, and the other end is connected to the plurality of upper ear plates (13) in a one-to-one correspondence.

3. A wind power tower with a built-in energy dissipation device according to claim 1, characterized in that: The upper ends of a plurality of vertical springs (4) are connected to the bottom surface of the upper reaction ring plate (12), and the lower ends are connected to the top surface of the lower reaction ring plate (9); one end of a plurality of horizontal springs (5) is connected to the outer wall of the reaction cylinder (8), and the other end is connected to the inner wall of the upper tower cylinder body (11).

4. A wind power tower with a built-in energy dissipation device according to claim 3, characterized in that: A plurality of vertical springs (4) and a plurality of horizontal springs (5) are evenly arranged along the circumferential direction of the reaction cylinder (8), and the vertical springs (4) and the horizontal springs (5) are staggered with each other.

5. A wind power tower with a built-in energy dissipation device according to claim 1, characterized in that: A gap is provided between the outer wall of the reaction cylinder (8) and the inner periphery of the upper reaction ring plate (12), and a gap is provided between the outer periphery of the lower reaction ring plate (9) and the inner wall of the upper tower cylinder body (11), so as to reserve relative movement space for the lower tower cylinder (1) and the upper tower cylinder (2) in the horizontal direction.

6. A wind power tower with a built-in energy dissipation device according to claim 1, characterized in that: A gap is provided between the upper opening of the upper tower barrel (11) and the lower opening of the lower tower barrel (6), so as to reserve a relative movement space for the lower tower barrel (1) and the upper tower barrel (2) in the vertical direction.

7. A wind power tower with a built-in energy dissipation device according to claim 5, characterized in that: The gap between the outer wall of the reaction cylinder (8) and the inner periphery of the upper reaction ring plate (12), and the gap between the outer periphery of the lower reaction ring plate (9) and the inner wall of the upper tower cylinder body (11) are set to 0.5 cm.

8. A wind power tower with a built-in energy dissipation device according to claim 6, characterized in that: The gap between the upper opening of the upper tower barrel body (11) and the lower opening of the lower tower barrel body (6) is set to 1 cm.

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