CN211950752U - Wind turbine tower operating condition monitoring device - Google Patents

Abstract

A wind turbine tower operating state monitoring device, comprising a vibration sensor for obtaining vibration information on the top of a wind turbine tower; an inclination sensor for obtaining wind turbine tower inclination information; a bolt loosening sensor for obtaining connection bolt tightness information; and three sensors It is connected to the conditioning and acquisition module that supplies power, amplifies, filters the signal and collects it; temporarily stores the signals processed by the three conditioning and acquisition modules and preprocesses the amplitude and RMS values, and the processed result data and The original signal data is stored in the RAM unit of the storage unit; the data transmission module which is connected with the storage unit and transmits the data therein to the data receiving module; also includes a power supply module; The fastening state of the connection is monitored at the same time, which reduces the number of monitoring equipment installed on site, and is conducive to more comprehensive monitoring of the operating state of the wind turbine tower.

Description

A wind turbine tower operating state monitoring device

technical field

The utility model relates to the technical field of wind turbine tower operation state monitoring, in particular to a wind turbine tower operation state monitoring device.

Background technique

The wind turbine tower is usually composed of several sections, and each section is connected by bolts. The connection state of the bolt connection is directly related to whether the connection between the various sections of the tower is safe and reliable. The inclination angle and the vibration of the nacelle and the tightness of the bolted connections are monitored simultaneously.

SUMMARY OF THE INVENTION

In order to overcome the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a wind turbine tower operating state monitoring device, which can simultaneously monitor the tower inclination, the vibration of the nacelle, and the tightening state of the bolt connection, reducing the need for The number of monitoring equipment installed on site is reduced, which is conducive to more comprehensive monitoring of the operating status of the wind turbine tower.

In order to achieve the above-mentioned technical purpose, the utility model adopts the following technical solutions:

A wind turbine tower operating state monitoring device, comprising a vibration sensor 1 for measuring radial and axial vibration signals at the top of the wind turbine tower to obtain vibration information on the top of the wind turbine tower; The top and bottom tilt angle signals of the tower are used to obtain the tilt angle sensor 2 of the wind turbine tower tilt information; it is used to measure the tightening state signals of the connecting bolts of the upper, middle and lower sections of the wind turbine tower to obtain the connecting bolts. The bolt loosening sensor 3 for the information of the tightness state; the vibration sensor 1 connected with the vibration sensor 1 supplies power to the vibration sensor 1, and the vibration signal conditioning acquisition module 4 that amplifies, filters and collects the vibration sensor signal, and is connected to the inclination sensor 2 to supply power to the inclination sensor 2, The inclination angle signal conditioning acquisition module 5 for amplifying, filtering and collecting the inclination sensor signal; the bolt looseness signal conditioning acquisition module 6 for amplifying and filtering the bolt loosening sensor signal and collecting the bolt looseness sensor 3 connected with the bolt loosening sensor 3 to supply power; It is connected with the vibration signal conditioning acquisition module 4, the inclination signal conditioning acquisition module 5, and the bolt loosening signal conditioning acquisition module 6, and the signals processed by these three conditioning acquisition modules are temporarily stored and preprocessed to solve the amplitude and effective value, and The processed result data and the original signal data are stored in the RAM unit 7 of the storage unit 8; the storage unit 8 is connected with the RAM unit 7, and the data transmitted by the RAM unit 7 is stored locally, and its storage capacity is strong, at least it can store The monitoring data of one week; the data transmission module 9 connected with the storage unit 8 transmits the data in the storage unit 8 to the data reception module 11 through the network protocol; the data reception module 11 is connected with the data transmission module 9 and receives the data transmission module 9 transmission The power supply for power supply is connected to the vibration signal conditioning and acquisition module 4, the inclination signal conditioning and acquisition module 5, the bolt loosening signal conditioning and acquisition module 6, the RAM unit 7, the storage unit 8, the data transmission module 9 and the data receiving module 11. module 10.

There are multiple vibration sensors 1, which are respectively installed at the position near the tower of the nacelle frame at the top of the wind turbine tower and at the lower left beam of the gearbox.

The inclination sensor 2 includes a tower top inclination sensor and a tower bottom inclination sensor. The tower top inclination sensor is installed at a position below the yaw flange on the top of the wind turbine tower that does not affect the rotation of the wind turbine nacelle, and the horizontal position is near the tower lighting lamp, The tower bottom inclination sensor is located in the center of the foundation base of the wind turbine, and is fixed on the concrete foundation through expansion screws.

There are a plurality of the bolt loosening sensors 3, which are respectively installed at the top flanges of the towers in the first, second and third sections of the tower, and are directly sleeved on the high-strength bolts.

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

(1) The device of the utility model can monitor the inclination angle of the tower frame, the vibration of the engine room, and the fastening state of the bolt connection at the same time, and can effectively monitor the operation state of the tower frame.

(2) The device of the present invention can directly reflect the connection state of each section of the tower by measuring the bolt connection tightening state signal, and provide a basis for the monitoring of the safety of the tower.

Description of drawings

Fig. 1 is a block diagram of a wind turbine tower operating state monitoring device of the present invention.

Detailed ways

The specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1, the utility model is a wind turbine tower operating state monitoring device, including a vibration signal used to measure the radial and axial vibration signals of the top of the wind turbine tower to obtain the vibration information of the top of the wind turbine tower. Sensor 1; inclination sensor 2 for measuring the top and bottom inclination angle signals of the wind turbine tower to obtain the inclination information of the wind turbine tower; for measuring the tightness of the upper, middle and lower sections of the wind turbine tower connecting bolts The bolt loosening sensor 3, which is connected to the vibration sensor 1, supplies power to the vibration sensor 1, amplifies, filters the vibration sensor signal, and collects the vibration signal conditioning acquisition module 4, which is connected with the inclination sensor. 2 is connected to power supply for the inclination sensor 2, amplifies, filters the signal of the inclination sensor and collects the inclination signal conditioning and acquisition module 5; the one connected to the bolt loosening sensor 3 supplies power to the bolt loosening sensor 3, amplifies and filters the signal of the bolt loosening sensor and collects it The bolt loosening signal conditioning and acquisition module 6 is connected to the vibration signal conditioning and acquisition module 4, the inclination signal conditioning and acquisition module 5 and the bolt loosening signal conditioning and acquisition module 6, and the signals processed by these three conditioning and acquisition modules are temporarily stored and amplified. The value and the effective value are preprocessed, and the processed result data and original signal data are stored in the RAM unit 7 of the storage unit 8; the storage unit 8 is connected with the RAM unit 7, and the data transmitted by the RAM unit 7 is stored locally. , its storage capacity is strong, and it can store monitoring data for at least one week (to prevent the subsequent transmission of data from losing data due to network disconnection); the data in the storage unit 8 connected to the storage unit 8 is transmitted to the data receiving module 11 through the network protocol. Transmission module 9; the data receiving module 11 is connected to the data transmission module 9 and receives the data transmitted by the data transmission module 9; and the vibration signal conditioning acquisition module 4, the inclination signal conditioning acquisition module 5, the bolt loosening signal conditioning acquisition module 6, the RAM unit 7 , the storage unit 8 , the data transmission module 9 and the data receiving module 11 are connected to a power supply module 10 that supplies power.

As a preferred embodiment of the present invention, there are multiple vibration sensors 1, which are respectively installed at the position near the tower of the nacelle frame on the top of the wind turbine tower and at the lower left beam of the gearbox.

As a preferred embodiment of the present invention, the inclination sensor 2 includes a tower top inclination sensor and a tower bottom inclination sensor, and the tower top inclination sensor is installed at a position below the yaw flange on the top of the wind turbine tower that does not affect the rotation of the wind turbine nacelle, The horizontal position is close to the tower lighting, and the tower bottom inclination sensor is located in the center of the base of the wind turbine, and is fixed on the concrete foundation through expansion screws.

As a preferred embodiment of the present invention, there are multiple bolt loosening sensors 3, which are respectively installed at the top flanges of the towers in the first, second and third sections of the tower, and are directly sleeved on the high-strength bolts.

The use method of the monitoring device of the utility model: the vibration sensors 1 are respectively installed at the position near the tower of the nacelle frame at the top of the wind turbine tower, and can be installed at the lower left beam of the gearbox, and the radial direction of the top of the wind turbine tower is measured respectively. , Axial vibration signal; Inclination sensor 2 includes a tower top inclination sensor and a tower bottom inclination sensor. The tower top inclination sensor is installed at a position below the yaw flange on the top of the wind turbine tower that does not affect the rotation of the wind turbine nacelle, and the horizontal position is close to the tower. At the lighting place, the tower bottom inclination sensor is located in the center of the base of the wind turbine, and is fixed on the concrete foundation through expansion screws. A plurality of bolt loosening sensors 3 are respectively installed at the top flanges of the towers in the first, second and third sections of the tower, and can be directly sleeved on the high-strength bolts.

The device and the prior art are used to realize the data collection, preprocessing and transmission of each sensor.

Claims (4)

1. The utility model provides a wind turbine tower operating condition monitoring devices which characterized in that: the vibration sensor comprises a vibration sensor (1) for measuring radial and axial vibration signals of the top of a wind turbine tower so as to obtain vibration information of the top of the wind turbine tower; the inclination angle sensor (2) is used for measuring and obtaining inclination angle signals of the top and the bottom of the wind turbine tower so as to obtain inclination information of the wind turbine tower; the bolt loosening sensor (3) is used for measuring and obtaining fastening state signals of the connecting bolts of the upper section, the middle section and the lower section of the wind turbine tower so as to obtain tightness state information of the connecting bolts; the vibration signal conditioning and acquisition module (4) is connected with the vibration sensor (1) and used for supplying power to the vibration sensor (1), amplifying and filtering signals of the vibration sensor and acquiring the signals, and the inclination signal conditioning and acquisition module (5) is connected with the inclination sensor (2) and used for supplying power to the inclination sensor (2) and amplifying and filtering signals of the inclination sensor and acquiring the signals; the bolt loosening signal conditioning and collecting module (6) is connected with the bolt loosening sensor (3) and is used for supplying power to the bolt loosening sensor (3), amplifying and filtering signals of the bolt loosening sensor and collecting the signals; the system is connected with a vibration signal conditioning and collecting module (4), an inclination angle signal conditioning and collecting module (5) and a bolt loosening signal conditioning and collecting module (6), signals processed by the three conditioning and collecting modules are temporarily stored, amplitude and effective value solving pretreatment is carried out, and processed result data and original signal data are stored in an RAM unit (7) of a storage unit (8); the storage unit (8) is connected with the RAM unit (7) and used for storing the data transmitted by the RAM unit (7) on site, and the storage unit has strong storage capacity and can store monitoring data for at least one week; the data transmission module (9) is connected with the storage unit (8) and transmits the data in the storage unit (8) to the data receiving module (11) through a network protocol; the data receiving module (11) is connected with the data transmission module (9) and receives data transmitted by the data transmission module (9); and the power supply module (10) is connected with the vibration signal conditioning and collecting module (4), the inclination angle signal conditioning and collecting module (5), the bolt loosening signal conditioning and collecting module (6), the RAM unit (7), the storage unit (8), the data transmission module (9) and the data receiving module (11) and supplies power to the data transmission module.

2. The wind turbine tower operation state monitoring device according to claim 1, wherein: the vibration sensors (1) are multiple and are respectively installed at the position, close to the tower, of the top of the wind turbine tower, of the engine room rack and at the position of a cross beam at the lower left of the gear box.

3. The wind turbine tower operation state monitoring device according to claim 1, wherein: the tilt angle sensor (2) comprises a tower top tilt angle sensor and a tower bottom tilt angle sensor, the tower top tilt angle sensor is arranged at a position which does not influence the rotation of a cabin of the wind turbine below a yaw flange at the top of a tower of the wind turbine, the horizontal position is close to a tower lighting lamp, and the tower bottom tilt angle sensor is arranged at the center of a base of the wind turbine and fixed on a concrete foundation through expansion screws.

4. The wind turbine tower operation state monitoring device according to claim 1, wherein: the bolt looseness sensors (3) are multiple and are respectively arranged at flanges at the tops of the first section, the second section and the third section of the tower drum and directly sleeved on the high-strength bolts.

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