Safety on-line monitoring device for tower drum and pile foundation of offshore wind turbine generator

Abstract

The utility model discloses an offshore wind turbine generator tower drum and pile foundation safety on-line monitoring device which comprises a tower drum main body, a fixing hoop sleeve is arranged in the middle of the outer portion of the tower drum main body, a corrosion monitor is arranged at the front end of the fixing hoop sleeve, a base is arranged at the bottom end of the tower drum main body, and a pile foundation is arranged on the base. An access channel is arranged at the bottom of one side of the tower drum body, and a sealing door is hinged to one side of the access channel. The isolation protection assembly is arranged at the top of the base, after the base is connected with the wind power foundation through the bolts, the protection caps are nested outside the bolts, and meanwhile, the mounting sleeves are mounted in the combined slots through threaded connection, so that the purpose of stably mounting the protection caps on the outer sides of the bolts on the base can be achieved; the protective cap is used for carrying out isolation protection treatment on the connecting bolt, the situation that the structural stability of the offshore wind turbine generator tower drum is affected by bolt corrosion damage caused by seawater scouring or salt mist dip dyeing is avoided, and the protective cap can be conveniently detached to replace the bolt.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind turbine tower technology, and in particular to an online monitoring device for the safety of offshore wind turbine towers and pile foundations. Background Technology

[0002] The wind turbine tower is the steel structure of a wind turbine that connects the wind turbine and the foundation ring, providing support and absorbing vibrations. The wind turbine tower bears the weight of the nacelle, blades, and other components in the wind turbine, ensuring the stable operation of the entire wind turbine.

[0003] As disclosed in Utility Model No. CN215719247U, this invention provides an online safety monitoring device for offshore wind turbine towers and pile foundations. The device includes a tower body and an entry device. The entry device includes a construction channel with a limiting baffle plate fixedly connected to its inner surface. A sealing ring is fixedly connected to one side of the limiting baffle plate, and a sealing cover is provided at one end of the construction channel to block the passage. This utility model enhances the sealing capability of the sealing cover at the construction channel through the sealing ring. After the construction personnel pass through the rotating device, the rotating device automatically closes, further enhancing the sealing capability inside the construction channel. This effectively prevents humid air from entering the tower body and thus protects the tower body's service life. However, in the application of this technical solution, the wind turbine tower and the foundation ring are connected by bolts. At sea, the probability of the bolts being corroded and damaged by waves and salt spray increases exponentially. There is a technical problem that the bolts installed on the tower cannot be isolated and protected to delay corrosion and ensure the structural safety of the wind turbine tower. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides an online safety monitoring device for offshore wind turbine towers and pile foundations. It can solve the problem that the wind turbine tower and the foundation ring are connected by bolts. However, at sea, the probability of the bolts being corroded and damaged is multiplied by the impact of waves and salt spray. There is a technical problem that the bolts installed on the tower cannot be isolated and protected to delay corrosion and ensure the structural safety of the wind turbine tower.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an offshore wind turbine tower, including a tower body, a fixing sleeve provided at the middle position of the outer side of the tower body, a corrosion monitoring instrument provided at the front end of the fixing sleeve, a base provided at the bottom end of the tower body, an access channel provided at the bottom of one side of the tower body, a sealing door hinged to one side of the access channel, a reinforcing angle plate provided between the bottom end of the outer side of the tower body and the top of the base, an assembly hole provided inside the base, a combination slot provided outside the assembly hole at the top of the base, a protective cap provided above the assembly hole at the top of the base, an installation sleeve provided at the bottom edge of the protective cap, and a reinforcing component provided on the inner side wall of the tower body.

[0006] As a preferred embodiment of this utility model, the mounting sleeve is inserted into the interior of the combination slot, the outer side of the mounting sleeve is provided with an external thread, and the inner sidewall of the combination slot is provided with an internal thread that mates with the external thread.

[0007] As a preferred embodiment of this utility model, the base is annular, the mounting holes are arranged at equal intervals inside the base, and the reinforcing angle plates are arranged at equal intervals between the bottom of the tower body and the top of the base.

[0008] As a preferred technical solution of this utility model, the reinforcing component includes a reinforcing plate, which is fixedly connected to the inner side of the tower body. The reinforcing plate is semi-circular, and reinforcing ribs are provided between the reinforcing plates on the inner side of the tower body. The reinforcing plates are arranged at equal intervals on the inner side of the tower body.

[0009] An online monitoring device for pile foundation safety includes an offshore wind turbine tower as described above. A first tilt sensor is installed at the top of the rear end of the tower body, a second tilt sensor is installed at the bottom of the rear end of the tower body, a triaxial acceleration sensor is installed near the top of the rear end of the tower body, and a stress meter is installed below the triaxial acceleration sensor at the rear end of the tower body.

[0010] As a preferred embodiment of this utility model, the first tilt sensor and the second tilt sensor are symmetrically arranged at the rear end inside the tower body.

[0011] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0012] 1. By setting an isolation and protection component on the top of the base, after the base is connected to the wind turbine foundation with bolts, the protective cap is nested on the outside of the bolts. At the same time, the mounting sleeve is installed into the inside of the combination slot through threaded connection. This achieves the purpose of firmly installing the protective cap on the outside of the bolts on the base. The protective cap is used to isolate and protect the connecting bolts, avoiding seawater erosion or salt spray contamination that could cause the bolts to rust and be damaged, affecting the structural stability of the offshore wind turbine tower. It also allows for easy disassembly of the protective cap to replace the bolts.

[0013] 2. By setting reinforcing components on the inner sidewall of the tower body, a semi-circular reinforcing plate is welded to the inner sidewall of the tower body during the installation of the offshore wind turbine tower, and a reinforcing rib is welded between the reinforcing plates. This strengthens the tower body structure from both the horizontal and vertical directions, thereby further improving the structural strength of the offshore wind turbine tower and extending its service life. This method is highly feasible. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a partial cross-sectional view of the main body of the tower of this utility model.

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0018] The components include: 1. Base; 2. Tower body; 3. Fixing hoop; 4. Corrosion monitor; 5. First tilt sensor; 6. Access channel; 7. Sealing door; 8. Protective cap; 9. Reinforcing plate; 10. Reinforcing rib; 11. Stress gauge; 12. Triaxial accelerometer; 13. Second tilt sensor; 14. Reinforcing angle plate; 15. Mounting sleeve; 16. Combination slot; 17. Assembly hole. Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified. Example

[0020] Please refer to Figure 1-4 As shown, this utility model provides an offshore wind turbine tower, including a tower body 2, a ring-shaped base 1 at the bottom of the tower body 2, an access channel 6 at the bottom of one side of the tower body 2 to facilitate the entry and exit of technical personnel into the wind turbine tower, a sealing door 7 hinged to one side of the access channel 6 to seal the wind turbine tower and prevent humid and salty air from entering the wind turbine tower, an assembly hole 17 arranged at equal intervals inside the base 1, a reinforcing angle plate 14 arranged at equal intervals between the bottom of the tower body 2 and the top of the base 1, the assembly hole 17 and the reinforcing angle plate 14 can be stably connected to the pile foundation through the assembly hole 17 and the reinforcing angle plate 14.

[0021] A pile foundation safety online monitoring device includes an offshore wind turbine tower (as described above). The monitoring device also includes a fixing sleeve 3, which is located at the middle position outside the tower body 2. A first tilt sensor 5 is installed at the top of the rear end inside the tower body 2, and a second tilt sensor 13 is installed at the bottom of the rear end inside the tower body 2. The first tilt sensor 5 and the second tilt sensor 13 are symmetrically arranged at the rear end inside the tower body 2. When the wind turbine is working, the first tilt sensor 5 and the second tilt sensor 13 are used to monitor the tilt angle of the wind turbine in real time. A triaxial accelerometer 12 is installed near the top of the rear end inside the tower body 2 to detect the vibration of the pile foundation. A stress gauge 11 is installed below the triaxial accelerometer 12 at the rear end inside the tower body 2 to detect the stress and strain of the foundation. A corrosion monitor 4 is installed at the front end of the fixing sleeve 3 to monitor the degree of corrosion on the outside of the wind turbine tower in real time, thereby ensuring the safe and stable operation and power generation of the wind turbine.

[0022] As a further implementation of this embodiment, such as Figure 1-4 As shown, a combination slot 16 is provided on the outside of the mounting hole 17 at the top of the base 1. A protective cap 8 is provided above the mounting hole 17 at the top of the base 1. An installation sleeve 15 is provided at the bottom edge of the protective cap 8. The installation sleeve 15 is inserted into the interior of the combination slot 16. The outside of the installation sleeve 15 is provided with external threads. The inner side wall of the combination slot 16 is provided with internal threads that match the external threads. After the wind turbine tower is installed, the installation sleeve 15 is installed into the interior of the combination slot 16 through threaded connection. This achieves the purpose of firmly installing the protective cap 8 on the outside of the bolt on the base 1. The protective cap 8 is used to isolate and protect the connecting bolts, preventing seawater erosion or salt spray from causing the bolts to rust and be damaged, which would affect the structural stability of the offshore wind turbine tower.

[0023] After connecting the base 1 to the wind power foundation with bolts, the protective cap 8 is nested outside the bolts. At the same time, the mounting sleeve 15 is installed into the inside of the combination slot 16 through threaded connection. The protective cap 8 can be firmly installed on the outside of the bolts on the base 1. The protective cap 8 is used to isolate and protect the connecting bolts, and the protective cap 8 can be easily removed to replace the bolts.

[0024] As a further implementation of this embodiment, such as Figure 1 and Figure 2 As shown, the inner sidewall of the tower body 2 is provided with a reinforcing component, which includes a semi-circular reinforcing plate 9. The reinforcing plate 9 is fixedly connected to the inner side of the tower body 2, and the reinforcing plates 9 are arranged at equal intervals on the inner side of the tower body 2. A reinforcing rib 10 is provided between the reinforcing plates 9 on the inner side of the tower body 2. By welding the semi-circular reinforcing plate 9 to the inner sidewall of the tower body 2 and welding the reinforcing rib 10 between the reinforcing plates 9, the structure of the tower body 2 can be strengthened from both the horizontal and vertical directions, so as to further improve the structural strength of the offshore wind turbine tower and extend the tower life.

[0025] Specific working principle:

[0026] When assembling an offshore wind turbine, bolts are used to connect the base 1 to the wind turbine foundation through the mounting holes 17 and the reinforcing angle plates 14. The protective cap 8 is then nested around the bolts, and the mounting sleeve 15 is threaded into the combination slot 16. This securely mounts the protective cap 8 onto the outside of the bolts on the base 1, providing protection against saline-water gases. A semi-circular reinforcing plate 9 is welded to the inner sidewall of the tower body 2, and reinforcing ribs 10 are welded between the reinforcing plates 9. This provides structural protection to the tower body 2 from both horizontal and vertical directions. The system is reinforced and access channels 6 facilitate access for technicians to install equipment inside the wind turbine tower. After the wind turbine is put into operation, the wind turbine tower can be sealed through the sealing door 7 to prevent humid and salty air from entering the tower. The tilt angle of the wind turbine is monitored in real time using the first tilt sensor 5 and the second tilt sensor 13. At the same time, the pile foundation vibration and foundation stress and strain are detected by the triaxial accelerometer 12 and the stress meter 11. The corrosion monitoring instrument 4 monitors the degree of external corrosion of the wind turbine tower in real time, thereby ensuring the safe and stable operation and power generation of the wind turbine.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An offshore wind turbine tower section comprising a tower section body (2), characterized in that: The middle position of the outer part of the tower body (2) is provided with a fixed hoop (3), the front end of the fixed hoop (3) is provided with a corrosion monitor (4), the bottom end of the tower body (2) is provided with a base (1), the bottom of one side of the tower body (2) is provided with an access passage (6), one side of the access passage (6) is hinged with a sealing door (7), the bottom end of the outer part of the tower body (2) and the top of the base (1) are provided with reinforcing angle plates (14), the inside of the base (1) is provided with an assembly hole (17), the outside of the assembly hole (17) on the top of the base (1) is provided with a combined slot (16), the top of the assembly hole (17) of the base (1) is provided with a protective cap (8), the edge of the bottom end of the protective cap (8) is provided with a mounting sleeve (15), the inside side wall of the tower body (2) is provided with a reinforcing assembly.

2. An offshore wind turbine tower section according to claim 1, characterized in that: The mounting sleeve (15) is inserted into the inside of the combined slot (16), the outside of the mounting sleeve (15) is provided with external threads, and the inside side wall of the combined slot (16) is provided with internal threads matched with the external threads.

3. An offshore wind turbine tower section according to claim 1, characterized in that: The base (1) is annular, the assembly holes (17) are arranged at equal intervals in the inside of the base (1), and the reinforcing angle plates (14) are arranged at equal intervals between the bottom end of the outer part of the tower body (2) and the top of the base (1).

4. An offshore wind turbine tower section according to claim 1, characterized in that: The reinforcing assembly comprises reinforcing plates (9), the reinforcing plates (9) are fixedly connected to the inside of the tower body (2), the reinforcing plates (9) are semicircular, reinforcing rib plates (10) are arranged between the reinforcing plates (9) on the inside of the tower body (2), and the reinforcing plates (9) are arranged at equal intervals on the inside of the tower body (2).

5. A pile foundation safety online monitoring device, comprising the offshore wind turbine tower drum according to any one of claims 1-4, characterized in that: The top of the rear end of the inside of the tower body (2) is provided with a first inclination sensor (5), the bottom of the rear end of the inside of the tower body (2) is provided with a second inclination sensor (13), the position close to the top of the rear end of the inside of the tower body (2) is provided with a three-axis acceleration sensor (12), and the lower side of the three-axis acceleration sensor (12) of the rear end of the inside of the tower body (2) is provided with a stress meter (11).

6. The pile safety online monitoring device according to claim 5, characterized in that: The first inclination sensor (5) and the second inclination sensor (13) are symmetrically arranged at the rear end of the inside of the tower body (2).

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