Sensor mounting device for monitoring vibration of offshore wind power fan blade

Abstract

The utility model discloses a sensor mounting device for monitoring vibration of an offshore wind power fan blade. The top end of a first anti-shake free shaft is connected to the bottom end of a second anti-shake free shaft through an anti-shake assembly; the top end of the second anti-shake free shaft is connected to the bottom end of the third anti-shake free shaft through an anti-shake assembly. The top end of the third anti-shake free shaft is connected to the bottom end of the fourth anti-shake free shaft through an anti-shake assembly. The top end of the fourth anti-shake free shaft is connected to the top end of the fifth anti-shake free shaft through an anti-shake assembly. The bottom end of the fifth anti-shake free shaft is connected to the bottom end of the sixth anti-shake free shaft through an anti-shake assembly. And a distance sensor is mounted at the top end of the sixth anti-shaking free shaft. According to the utility model, vertical, horizontal and deep multi-angle anti-shake can be realized, so that the position of the distance sensor can be kept uncertain under the condition that the offshore wind power fan obviously shakes, and the vibration monitoring of the distance sensor on the fan blade is further realized.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind turbines, in particular to blades of wind turbines, and in particular to a sensor installation device for vibration monitoring of offshore wind turbine blades. Background Art

[0002] As environmental and energy issues become increasingly prominent, wind energy, as a renewable, pollution-free green energy, is gaining more and more attention. Offshore wind power generation is one of the main forms of utilizing wind energy.

[0003] Wind turbine blades are the core components of offshore wind turbines and an important part of wind turbine energy conversion. Their performance directly affects the stability of wind turbine operation and the efficiency of energy conversion. When wind turbine blades rotate from top to bottom, the force changes and alternates, and the influence of outdoor wind will cause the vibration of wind turbine blades.

[0004] The violent vibration of the fan blades can cause cracks. If the vibration is not effectively controlled, it may cause the entire fan blade to break and fail, resulting in huge economic losses.

[0005] In order to understand the vibration status of wind turbine blades, they need to be tested. Due to the special working mode of wind turbine blades, the traditional vibration detection method obviously cannot meet the requirements. Therefore, it is necessary to set up a sensor installation device dedicated to offshore wind turbine blade vibration monitoring to ensure the quality of the sensor's vibration monitoring of wind turbine blades. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a sensor installation device for monitoring vibration of offshore wind turbine blades.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A sensor installation device for monitoring vibration of offshore wind turbine blades, the sensor installation device includes a first anti-shake free axis 1, a second anti-shake free axis 2, a third anti-shake free axis 3, a fourth anti-shake free axis 4, a fifth anti-shake free axis 5, and a sixth anti-shake free axis 6; wherein: the top end of the first anti-shake free axis 1 is connected to the bottom end of the second anti-shake free axis 2 through an anti-shake component 8; the top end of the second anti-shake free axis 2 is connected to the bottom end of the third anti-shake free axis 3 through an anti-shake component 8; the top end of the third anti-shake free axis 3 is connected to the bottom end of the fourth anti-shake free axis 4 through an anti-shake component 8; the top end of the fourth anti-shake free axis 4 is connected to the top end of the fifth anti-shake free axis 5 through an anti-shake component 8; the bottom end of the fifth anti-shake free axis 5 is connected to the bottom end of the sixth anti-shake free axis 6 through an anti-shake component 8; and a distance sensor 7 is installed on the top end of the sixth anti-shake free axis 6.

[0009] The utility model also has the following additional technical features:

[0010] As a further specific optimization of the technical solution of the utility model: the first anti-shake free axis 1 includes a horizontal installation axis 101 arranged horizontally and a vertical fixed vertical axis 102 arranged vertically, the connection between the horizontal installation axis 101 and the fixed vertical axis 102 is welded, and the horizontal installation axis 101 and the fixed vertical axis 102 are arranged at a right angle; the top end of the fixed vertical axis 102 is connected to the second anti-shake free axis 2 through the anti-shake component 8.

[0011] As a further specific optimization of the technical solution of the utility model: the anti-shake component 8 includes an anti-shake component female head 801 and an anti-shake component male head 806; the anti-shake component female head 801 and the anti-shake component male head 806 are connected to form an anti-shake component through an anti-shake spring 805.

[0012] As a further specific optimization of the technical solution of the utility model: a connecting shaft 802 is protruding from the front end of the anti-shake component female head 801, a fixing groove 803 is provided on the side of the connecting shaft 802, and an internal threaded hole 804 is provided on the end face of the connecting shaft 802.

[0013] As a further specific optimization of the technical solution of the utility model: the female head 801 of the anti-shake component is provided with a fixed locking piece 809, and a smooth cylinder 8091 is provided at the bottom of the fixed locking piece 809, and the outer diameter of the cylinder 8091 is smaller than the inner diameter of the through hole 807 at the center of the male head 806 of the anti-shake component; a fixing bolt 8092 with an external thread is provided at the bottom of the cylinder 8091, and the fixing bolt 8092 is used in conjunction with the internal thread hole 804 of the female head 801 of the anti-shake component.

[0014] As a further specific optimization of the technical solution of the utility model: the anti-shake component male head 806 is concave as a whole, a through hole 807 is arranged at the center of the anti-shake component male head 806, and a convex fixed shaft 808 is arranged inside the anti-shake component male head 806.

[0015] As a further specific optimization of the technical solution of the utility model: the anti-shake spring 805 has a spiral structure as a whole, the front end of the anti-shake spring 805 is a fixed plate 8051, and the fixed plate 8051 is inserted into the fixed groove 803 of the female head 801 of the anti-shake component; the rear end of the anti-shake spring 805 is provided with a fixed ring 8052 in the shape of a circular hole, and the fixed ring 8052 is sleeved on the fixed shaft 808 of the male head 806 of the anti-shake component.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The utility model can realize multi-angle anti-shake in vertical, horizontal and depth, so that the distance sensor 7 can ensure that the position of the distance sensor 7 remains fixed when the offshore wind turbine has obvious shaking, thereby realizing the vibration monitoring of the wind turbine blades by the distance sensor 7. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a sensor installation device for monitoring vibration of offshore wind turbine blades according to the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the anti-shake component 8 of the present utility model;

[0020] Figure 3 It is a schematic diagram of the usage monitoring curve of the sensor installation device of the utility model.

[0021] Explanation of the reference numerals: first anti-shake free axis 1 , second anti-shake free axis 2 , third anti-shake free axis 3 , fourth anti-shake free axis 4 , fifth anti-shake free axis 5 , sixth anti-shake free axis 6 , distance sensor 7 , anti-shake component 8 . DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Example 1

[0023] A sensor installation device for monitoring vibration of offshore wind turbine blades, the sensor installation device includes a first anti-shake free axis 1, a second anti-shake free axis 2, a third anti-shake free axis 3, a fourth anti-shake free axis 4, a fifth anti-shake free axis 5, and a sixth anti-shake free axis 6; wherein: the top of the first anti-shake free axis 1 is connected to the bottom of the second anti-shake free axis 2 through an anti-shake component 8; the top of the second anti-shake free axis 2 is connected to the bottom of the third anti-shake free axis 3 through an anti-shake component 8; the top of the third anti-shake free axis 3 is connected to the bottom of the fourth anti-shake free axis 4 through an anti-shake component 8; the top of the fourth anti-shake free axis 4 is connected to the top of the fifth anti-shake free axis 5 through an anti-shake component 8; the bottom of the fifth anti-shake free axis 5 is connected to the bottom of the sixth anti-shake free axis 6 through an anti-shake component 8; and a distance sensor 7 is installed at the top of the sixth anti-shake free axis 6. The distance sensor 7 can be an infrared laser sensor.

[0024] The first anti-shake free axis 1 includes a horizontal installation axis 101 and a vertical fixed vertical axis 102. The connection between the horizontal installation axis 101 and the fixed vertical axis 102 is welded, and the horizontal installation axis 101 and the fixed vertical axis 102 are arranged at a right angle. The top end of the fixed vertical axis 102 is connected to the second anti-shake free axis 2 through an anti-shake component 8.

[0025] The anti-shake component 8 includes an anti-shake component female connector 801 and an anti-shake component male connector 806 ; the anti-shake component female connector 801 and the anti-shake component male connector 806 are connected to form an anti-shake component through an anti-shake spring 805 .

[0026] The front end of the anti-shake component female head 801 is provided with a connecting shaft 802, the side of the connecting shaft 802 is provided with a fixing groove 803, and the end face of the connecting shaft 802 is provided with an internal threaded hole 804. The anti-shake component female head 801 is provided with a fixing locking piece 809, and the bottom of the fixing locking piece 809 is provided with a smooth cylinder 8091, and the outer diameter of the cylinder 8091 is smaller than the inner diameter of the through hole 807 at the center of the anti-shake component male head 806; the bottom of the cylinder 8091 is provided with a fixing bolt 8092 with an external thread, and the fixing bolt 8092 is used in conjunction with the internal threaded hole 804 of the anti-shake component female head 801.

[0027] The anti-shake component male head 806 is generally concave in shape, a through hole 807 is provided at the center of the anti-shake component male head 806 , and a convex fixed shaft 808 is provided inside the anti-shake component male head 806 .

[0028] The anti-shake spring 805 has a spiral structure as a whole. The front end of the anti-shake spring 805 is a fixed plate 8051, which is inserted into the fixed groove 803 of the female head 801 of the anti-shake component; the rear end of the anti-shake spring 805 is provided with a fixed ring 8052 in the shape of a circular hole, and the fixed ring 8052 is sleeved on the fixed shaft 808 of the male head 806 of the anti-shake component.

[0029] The above-mentioned sensor installation device realizes vertical, horizontal and depth multi-angle anti-shake through the arrangement of the first anti-shake free axis 1, the second anti-shake free axis 2, the third anti-shake free axis 3, the fourth anti-shake free axis 4, the fifth anti-shake free axis 5, the sixth anti-shake free axis 6 and the anti-shake component 8, so that the distance sensor 7 can ensure that the position of the distance sensor 7 remains fixed when the offshore wind turbine has obvious shaking, thereby realizing the vibration monitoring of the wind turbine blades by the distance sensor 7. Example 2

[0030] Installation and use of the sensor mounting device:

[0031] Step 1, install the end of the mounting horizontal axis 101 of the first anti-shake free axis 1 on the front end of the offshore wind turbine cover, install the distance sensor 7 on the top of the sixth anti-shake free axis 6 by bolts or other fixing methods, and make the distance sensor 7 face the root of the wind turbine blade.

[0032] Step 2, connect the distance sensor 7 to the control room of the wind farm through the remote signal line, analyze the signal changes of the distance sensor 7 through the remote monitoring equipment, and generate a distance curve table of the distance sensor 7 in real time. The distance curve table can reflect the distance changes between the distance sensor 7 and the root of the blade.

[0033] Step 3: When the distance curve in the distance curve table generated in real time changes too much or too little, it indicates that the blades of the offshore wind turbine are vibrating violently, and monitoring should be strengthened and maintenance should be carried out when necessary.

[0034] like Figure 3 As shown, the thin solid line in the figure represents the normal rotation curve of the offshore wind turbine blade. The thick and thin solid lines in the figure indicate that the distance between the blade and the distance sensor 7 becomes farther, indicating that the offshore wind turbine blade vibrates violently outward; the thin dotted lines in the figure indicate that the distance between the blade and the distance sensor 7 becomes closer, indicating that the offshore wind turbine blade vibrates violently inward.

[0035] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention but merely represents selected embodiments of the present invention.

Claims

1. A sensor installation device for monitoring vibration of offshore wind turbine blades, characterized in that: The sensor installation device comprises a first anti-shake free axis (1), a second anti-shake free axis (2), a third anti-shake free axis (3), a fourth anti-shake free axis (4), a fifth anti-shake free axis (5), and a sixth anti-shake free axis (6); wherein: the top end of the first anti-shake free axis (1) is connected to the bottom end of the second anti-shake free axis (2) through an anti-shake component (8); the top end of the second anti-shake free axis (2) is connected to the bottom end of the third anti-shake free axis (3) through an anti-shake component (8); the top end of the third anti-shake free axis (3) is connected to the bottom end of the fourth anti-shake free axis (4) through an anti-shake component (8); the top end of the fourth anti-shake free axis (4) is connected to the top end of the fifth anti-shake free axis (5) through an anti-shake component (8); the bottom end of the fifth anti-shake free axis (5) is connected to the bottom end of the sixth anti-shake free axis (6) through an anti-shake component (8); and a distance sensor (7) is installed at the top end of the sixth anti-shake free axis (6).

2. The sensor installation device for monitoring vibration of offshore wind turbine blades according to claim 1 is characterized in that: The first anti-shake free axis (1) comprises a horizontally arranged installation horizontal axis (101) and a vertically arranged fixed vertical axis (102); the connection between the installation horizontal axis (101) and the fixed vertical axis (102) is welded, and the installation horizontal axis (101) and the fixed vertical axis (102) are arranged at a right angle; the top end of the fixed vertical axis (102) is connected to the second anti-shake free axis (2) through an anti-shake component (8).

3. The sensor installation device for monitoring vibration of offshore wind turbine blades according to claim 1 is characterized in that: The anti-shake component (8) comprises an anti-shake component female head (801) and an anti-shake component male head (806); the anti-shake component female head (801) and the anti-shake component male head (806) are connected to form an anti-shake component via an anti-shake spring (805).

4. The sensor installation device for monitoring vibration of offshore wind turbine blades according to claim 3 is characterized in that: A connecting shaft (802) is protruding from the front end of the anti-shake component female head (801), a fixing groove (803) is provided on the side of the connecting shaft (802), and an internal threaded hole (804) is provided on the end surface of the connecting shaft (802).

5. The sensor installation device for monitoring vibration of offshore wind turbine blades according to claim 3 is characterized in that: The female head (801) of the anti-shake component is provided with a fixed locking piece (809), and a smooth cylinder (8091) is provided at the bottom of the fixed locking piece (809), and the outer diameter of the cylinder (8091) is smaller than the inner diameter of the through hole (807) at the center of the male head (806) of the anti-shake component; a fixing bolt (8092) with an external thread is provided at the bottom of the cylinder (8091), and the fixing bolt (8092) and the internal thread hole (804) of the female head (801) of the anti-shake component are used in combination.

6. The sensor installation device for monitoring vibration of offshore wind turbine blades according to claim 3 is characterized in that: The anti-shake component male head (806) is generally concave in shape, a through hole (807) is provided at the center of the anti-shake component male head (806), and a convex fixed shaft (808) is provided inside the anti-shake component male head (806).

7. The sensor installation device for monitoring vibration of offshore wind turbine blades according to claim 3 is characterized in that: The anti-shake spring (805) is an overall spiral structure, the front end of the anti-shake spring (805) is a fixing plate (8051), and the fixing plate (8051) is inserted into the fixing groove (803) of the female head (801) of the anti-shake component; the rear end of the anti-shake spring (805) is provided with a fixing ring (8052) in the shape of a circular hole, and the fixing ring (8052) is sleeved on the fixing shaft (808) of the male head (806) of the anti-shake component.

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