Device for detecting wall thickness of offshore wind power tower drum

Abstract

A wall thickness detection device for an offshore wind power tower drum comprises a support, supports arranged at the upper end and the lower end of the support, first rollers mounted on the supports, shaft sleeves fixedly connected to the left side and the right side of the support respectively, curved bars assembled in the shaft sleeves, second rollers assembled at one ends of the curved bars, limiting blocks in threaded connection with the other ends of the curved bars, and springs sleeved outside the curved bars. The two ends of the spring abut against the limiting block and the shaft sleeve respectively. A spraying pipe, a first housing and a water pump are installed on the support, nozzles are arranged on the spraying pipe, one end of the spraying pipe is communicated with a water outlet of the water pump through a water inlet pipe, an electric cylinder is installed in the first housing, a connecting plate is fixedly connected to an output shaft of the electric cylinder, and one end of a shaft pipe penetrates through the first housing and then is fixedly connected with the connecting plate. A probe in the ultrasonic thickness gauge is assembled at the other end of the shaft tube, a shaft seal is arranged between the shaft tube and the first housing, and the nozzle is located below the probe. The device is used for solving the problem that the wall thickness of an offshore wind power tower drum is difficult to measure due to the attachment of marine organisms.

Description

Technical Field

[0001] The utility model relates to a device for detecting the wall thickness of an offshore wind power tower. Background Art

[0002] The corrosion damage of offshore wind power pile foundation in the service environment is relatively large, that is, at the beginning of the design, it is usually considered to increase the corrosion margin for each part to maintain the safe and stable operation of wind turbine equipment throughout the service environment cycle. For pile foundations in the splash zone, tidal range zone and full immersion zone, the corrosion rate is faster, and the metal structure corrosion consumption is also greater than other areas. However, when it comes to underwater parts, it is usually very troublesome to measure the tower wall thickness, especially for the tower wall thickness in the full immersion zone, because the external space is all underwater and there is the influence of marine organisms, it is difficult to measure accurately. Utility Model Content

[0003] The utility model aims to provide an offshore wind power tower wall thickness detection device, which is used to solve the problem that the offshore wind power tower wall thickness is difficult to measure due to the attachment of marine organisms.

[0004] In order to solve the above problems, the technical solution of the utility model is:

[0005] A device for detecting the wall thickness of an offshore wind power tower comprises a bracket, supports are arranged at the upper and lower ends of the bracket, a first roller is installed on the support, shaft sleeves are fixedly connected to the left and right sides of the bracket respectively, a bent rod is arranged in the shaft sleeve, a second roller is arranged at one end of the bent rod, the other end of the bent rod is threadedly connected to a limit block, a spring is arranged outside the bent rod, and the two ends of the spring respectively abut against the limit block and the shaft sleeve; a spray pipe, a first cover shell and a water pump are installed on the bracket, a nozzle is arranged on the spray pipe, one end of the spray pipe is connected to the water pump drain port through a water inlet pipe, an electric cylinder is installed in the first cover shell, a connecting plate is fixedly connected to the output shaft of the electric cylinder, one end of the shaft tube is fixedly connected to the connecting plate after passing through the first cover shell, a probe in an ultrasonic thickness gauge is installed at the other end of the shaft tube, a shaft seal is arranged between the shaft tube and the first cover shell, and the nozzle is located below the probe.

[0006] A second cover shell is installed on a bracket between the first cover shell and the spray pipe, a motor is installed in the second cover shell, and an output shaft of the motor is connected with a wire brush after passing through the second cover shell.

[0007] It also includes a winch, the winch wire rope is connected to the bracket, a pressure sensor is connected between the electric cylinder output shaft and the connecting plate, the winch output shaft is connected to the photoelectric encoder transmission, the ultrasonic thickness gauge, the pressure sensor and the photoelectric encoder are connected to the controller input end, and the controller output end is connected to the water pump, the winch and the motor.

[0008] The beneficial effect of the utility model is that before measuring the thickness of the wind turbine tower, the detection position of the tower is firstly washed and scrubbed with high pressure to clean up the marine organisms and rust attached to the tower, and then the thickness of the tower is measured to obtain the accurate value of the wall thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings:

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0011] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0012] Figure 3 It is a partial structural schematic diagram of the utility model.

[0013] Figure 4 It is a schematic diagram of the circuit diagram of the utility model.

[0014] In the figure: bracket 1, spring 2, limit block 3, float 4, hose 5, sleeve 6, first roller 7, bent rod 8, second roller 9, probe 10, wire brush 11, spray pipe 12, nozzle 13, support 14, electric cylinder 15, first cover 16, second cover 17, motor 18, water pump 19, counterweight 20, winch 21, photoelectric encoder 22, repair boat 23, pressure sensor 24, connecting plate 25, waterproof cable connector 26, shaft tube 27, tower 28. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figures 1 to 4As shown, an offshore wind power tower wall thickness detection device comprises a bracket 1, a support 14 is arranged at the upper and lower ends of the bracket 1, a first roller 7 is installed on the support 14, a shaft sleeve 6 is fixedly connected to the left and right sides of the bracket 1, an L-shaped curved rod 8 is installed in the shaft sleeve 6, a second roller 9 is installed at one end of the curved rod 8, the other end of the curved rod 8 is threadedly connected to the limit block 3, a spring 2 is arranged outside the curved rod 8, and the two ends of the spring 2 are respectively against the limit block 3 and the shaft sleeve 6; a spray pipe 12 is installed on the bracket 1, The first housing 16 and the water pump 19 are provided with a nozzle 13 on the spray pipe 12. One end of the spray pipe 12 is connected to the water outlet of the water pump 19 through the water inlet pipe. The electric cylinder 15 is installed in the first housing 16. The connecting plate 25 is fixedly connected to the output shaft of the electric cylinder 15. One end of the shaft tube 27 passes through the first housing 16 and is fixedly connected to the connecting plate 25. The probe 10 in the ultrasonic thickness gauge is assembled at the other end of the shaft tube 27. A shaft seal is provided between the shaft tube 27 and the first housing 16. The nozzle 13 is located below the probe 10. It also includes a winch 21, which is arranged on the maintenance ship 23, and the wire rope of the winch 21 is connected to the bracket 1.

[0017] When the utility model is used, the bracket 1 is placed on one side of the tower, and then the two curved rods 8 are inserted into the shaft sleeve 6, and then the spring 2 and the limit block 3 are installed, and the spring 2 is compressed so that the tower is clamped between the first roller 7 and the second roller 9, and then the winch 21 slowly lowers the bracket 1, and when the nozzle 13 reaches the detection point, the winch 21 first pauses or drives the bracket 1 to move up and down, and then starts the water pump 19, and the water pump 19 draws seawater and sprays it from the nozzle 13, and the sprayed seawater washes the marine organisms attached to the detection point of the tower, and cleans a detection surface for the probe 10. After cleaning, the bracket 1 continues to descend, and the probe 10 is moved to the detection surface, and then the piston rod of the electric cylinder 15 is retracted to make the probe 10 against the detection surface, and then the probe 10 detects the wall thickness of the tower.

[0018] in:

[0019] 1. The function of the spring 2 on the outer casing bent rod 8 is to apply an elastic force to the second roller so that the first roller 7 and the second roller 9 can be clamped on the outer wall of the tower.

[0020] 2. The purpose of arranging the electric cylinder 15 in the first cover shell 16 is that, because the seawater-proof electric cylinder 15 is not available on the market, the electric cylinder 15 is arranged in the first cover shell 16 to prevent it from being corroded by seawater. In addition, a waterproof cable connector 26 is provided on the first cover shell 16 for threading the electric cylinder 15 cable and the probe 10 cable. In order to improve the waterproof effect of the waterproof cable connector, a sealant is applied to the outside of the waterproof cable connector for sealing.

[0021] 3. The purpose of setting the probe 10 in the ultrasonic thickness gauge to be retractable is that: because there are marine organisms attached to the surface of the tower, if the probe 10 is always attached to the tower, the probe 10 will collide with the marine organisms during the upward or downward movement, causing damage to the probe 10. Therefore, during the downward movement of the probe 10, the electric cylinder 15 drives the probe 10 to retract, and during detection, the probe 10 is driven to rest against the detection surface.

[0022] A second housing 17 is installed on the bracket 1 between the first housing 16 and the spray pipe 12, and a motor 18 is installed in the second housing 17. The output shaft of the motor 18 passes through the second housing 17 and is connected to the wire brush 11. A shaft seal is provided between the output shaft of the motor 18 and the second housing 17. When the wire brush 11 moves to the detection surface, the winch 21 is suspended, and then the motor 18 drives the wire brush 11 to brush the detection surface, thereby improving the cleaning effect of the detection surface.

[0023] A pressure sensor 24 is connected between the output shaft of the electric cylinder 15 and the connecting plate 25, the output shaft of the winch 21 is connected to the photoelectric encoder 22, the ultrasonic thickness gauge, the pressure sensor 24 and the photoelectric encoder 22 are connected to the controller input end, and the controller output end is connected to the water pump 19, the winch 21 and the motor 18. The controller uses the "Shenzhen Zhongdayou Touch Screen PLC Integrated Machine". When the winch 21 lowers the bracket 1, the photoelectric encoder 22 detects the lower length of the wire rope in the winch 21 in real time and displays it on the controller touch screen, thereby obtaining the position of the detection point. After the detection, the detection data is transmitted to the controller, and the controller records and stores the detection data, providing important data support for the subsequent material usage and cost control. In addition, the pressure sensor 24 is used to prevent the electric cylinder 15 from overloading and ensure that the probe 10 can effectively rest against the tower surface.

[0024] It also includes a hose 5, one end of which is connected to the water inlet of the water pump 19, and the other end is connected to the float 4. The area around the nozzle 13 and the wire brush 11 is still turbid due to the cleaning of marine organisms. The water pump 19 directly draws seawater near the nozzle 13, which easily causes the nozzle 13 to be blocked. Therefore, the hose 5 and the float 4 are used to introduce the water inlet of the water pump 19 to the sea surface, so that it draws clean water close to the sea surface to prevent the nozzle 13 from being blocked.

[0025] A circle of grooves is provided in the middle of the second roller 9. The grooves have a guiding function to improve the stability of the detection device when it moves.

[0026] A counterweight block 20 is provided in the bracket 1. The counterweight block 20 is used to increase the weight of the detection device and improve the stability of the detection device when it moves up and down.

[0027] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be deemed to be limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.

Claims

1. An offshore wind power tower wall thickness detection device, characterized in that: The invention comprises a bracket (1), a support (14) is arranged at the upper and lower ends of the bracket (1), a first roller (7) is installed on the support (14), a shaft sleeve (6) is fixedly connected to the left and right sides of the bracket (1), a bent rod (8) is installed in the shaft sleeve (6), a second roller (9) is installed at one end of the bent rod (8), the other end of the bent rod (8) is threadedly connected to a limit block (3), a spring (2) is arranged on the outer sleeve of the bent rod (8), and the two ends of the spring (2) are respectively against the limit block (3) and the shaft sleeve (6); a spray pipe (12), a first cover shell (16) and a water pump (19) are installed on the bracket (1), and a first cover shell (16) and a water pump (19) are installed on the spray pipe (12). A nozzle (13) is provided, one end of the spray pipe (12) is connected to the water outlet of a water pump (19) through a water inlet pipe, an electric cylinder (15) is installed in a first housing (16), a connecting plate (25) is fixedly connected to the output shaft of the electric cylinder (15), one end of a shaft tube (27) passes through the first housing (16) and is fixedly connected to the connecting plate (25), a probe (10) in an ultrasonic thickness gauge is mounted on the other end of the shaft tube (27), a shaft seal is provided between the shaft tube (27) and the first housing (16), the nozzle (13) is located below the probe (10), and a winch (21) is also included, the wire rope of the winch (21) is connected to the bracket (1).

2. The offshore wind power tower wall thickness detection device according to claim 1, characterized in that: A second cover shell (17) is installed on the bracket (1) between the first cover shell (16) and the spray pipe (12), a motor (18) is installed in the second cover shell (17), and an output shaft of the motor (18) passes through the second cover shell (17) and is connected to the wire brush (11).

3. An offshore wind power tower wall thickness detection device according to claim 1 or 2, characterized in that: A pressure sensor (24) is connected between the output shaft of the electric cylinder (15) and the connecting plate (25); the output shaft of the hoist (21) is transmission-connected to the photoelectric encoder (22); the ultrasonic thickness gauge, the pressure sensor (24) and the photoelectric encoder (22) are connected to the input end of the controller; and the output end of the controller is connected to the water pump (19), the hoist (21) and the motor (18).

4. An offshore wind power tower wall thickness detection device according to claim 1 or 2, characterized in that: It also includes a hose (5), one end of which is connected to the water inlet of the water pump (19) and the other end of which is connected to the float (4).

5. An offshore wind power tower wall thickness detection device according to claim 1 or 2, characterized in that: A circle of grooves is provided in the middle of the second roller (9).

6. An offshore wind power tower wall thickness detection device according to claim 1 or 2, characterized in that: A counterweight (20) is provided in the bracket (1).

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