CN212003450U - Wind turbine generator system tower section of thick bamboo state on-line monitoring system - Google Patents
Wind turbine generator system tower section of thick bamboo state on-line monitoring system Download PDFInfo
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- CN212003450U CN212003450U CN202020709126.7U CN202020709126U CN212003450U CN 212003450 U CN212003450 U CN 212003450U CN 202020709126 U CN202020709126 U CN 202020709126U CN 212003450 U CN212003450 U CN 212003450U
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Abstract
The utility model discloses an online monitoring system for the state of a tower drum of a wind turbine generator, which comprises a first inclination sensor arranged on the inner wall of the upper tower drum; the second inclination sensor is arranged on the inner wall of the lower tower; the data processing and analyzing device is connected with the first inclination sensor and the second inclination sensor to obtain dynamic inclination data of the tower; the server is connected with the data processing and analyzing device; a remote operation access terminal connected with the server; the off-line calibration detection device is used for calibrating the initial inclination angles of the upper tower drum and the lower tower drum; the first-order natural frequency detector is arranged on the tower top of the upper tower and connected with the data processing and analyzing device; an upper flange disposed at the bottom of the upper column; the lower flange is arranged at the top of the lower tower; the looseness detecting device is used for detecting the relative rotation angle of the nut and the bolt body; the utility model discloses wind generating set's normal operating has been guaranteed.
Description
Technical Field
The utility model relates to a wind turbine generator system technical field, in particular to wind turbine generator system tower section of thick bamboo state on-line monitoring system.
Background
The tower of the wind turbine generator is a bearing part in the wind turbine generator, and the tower mainly plays a supporting role in the wind turbine generator and absorbs the vibration of the wind turbine generator. The tower barrel bears complex and variable loads such as thrust, bending moment, torque load and the like, so that the tower barrel can generate certain-amplitude deformation such as swinging, twisting and the like in the operation process of the wind generating set; in addition, the tower barrel can be inclined under the influence of factors such as material change, part failure, foundation settlement and the like. The normal operation of the wind generating set can be influenced by the overlarge inclination deformation of the tower barrel, and safety accidents can be caused seriously, so that the foundation settlement of the wind generating set and the safety of the tower barrel need to be monitored in real time.
At present, the settlement of a foundation is regularly measured by using an optical level for monitoring the settlement of the foundation, and the time and the labor are wasted, so that the information of the settlement of the foundation cannot be known in real time. For the tower shape measurement, a plurality of GPS receivers are usually installed on the tower, and the inclination shape of the tower is obtained by mapping according to the GPS measurement data, which is costly, and the tower is in a closed state, so that the GPS signal reception is difficult.
Disclosure of Invention
An object of the utility model is to the above-mentioned not enough and defect of prior art, provide a wind turbine generator system tower section of thick bamboo state on-line monitoring system to solve the problem that above-mentioned background art exists.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an online monitoring system for the state of a tower of a wind turbine generator comprises:
the first inclination sensor is arranged on the inner wall of the upper tower;
the second inclination sensor is arranged on the inner wall of the lower tower;
the data processing and analyzing device is connected with the first inclination sensor and the second inclination sensor and used for calculating the inclination angles of the first inclination sensor and the second inclination sensor to obtain dynamic inclination data of the tower;
the server is connected with the data processing and analyzing device;
a remote operation access terminal connected with the server;
the off-line calibration detection device is used for calibrating the initial inclination angles of the upper tower drum and the lower tower drum;
further comprising:
the first-order natural frequency detector is arranged on the tower top of the upper tower and connected with the data processing and analyzing device;
an upper flange disposed at the bottom of the upper column;
the lower flange is arranged at the top of the lower tower;
the bolt body and the nut are connected with the upper flange and the lower flange;
the looseness detection device is used for detecting the relative rotation angle of the nut and the bolt body and is connected with the data processing and analyzing device.
In a preferred embodiment of the present invention, the first order natural frequency of vibration detector includes a biaxial acceleration sensor.
In the utility model discloses a preferred embodiment, the server still is connected with alarm device, works as the server is received when the first-order vibration natural frequency data of a tower section of thick bamboo that first-order vibration natural frequency detector detected surpasses the preset value, or works as the server receives the dynamic slope data of a tower section of thick bamboo that first gradient sensor or second gradient sensor detected surpasses the preset value, or works as the server receives not hard up detection device and detects when the not hard up degree of nut and bolt body surpasses the preset value, alarm device sends out the police dispatch newspaper.
The utility model discloses a preferred embodiment, off-line calibration detection device includes and is used for carrying out the single axial beam formula tilt sensor that measures to the upper surface at least three different position inclination of upper flange or lower flange respectively, single axial beam formula tilt sensor's both ends span respectively at the upper surface of upper flange or lower flange, single axial beam formula tilt sensor with data processing and analysis device connects, data processing and analysis device is right single axial beam formula tilt sensor measuring at least cubic inclination is through the algorithm calculation, synthesizes the biggest inclination of initialization and the position of upper portion tower section of thick bamboo or lower part tower section of thick bamboo.
In a preferred embodiment of the present invention, the inner walls of the upper tower and the lower tower are respectively provided with an upper suspension plate and a lower suspension plate, and the first inclination sensor and the second inclination sensor are respectively fixed to the upper suspension plate and the lower suspension plate.
In a preferred embodiment of the present invention, the data processing and analyzing device is disposed in the lower tower, and the data processing and analyzing device and the server are connected through an ethernet.
In a preferred embodiment of the present invention, the data processing and analyzing device includes an industrial computer.
In a preferred embodiment of the present invention, the data processing and analyzing device has a data receiving terminal.
By adopting the technical scheme, during work, the initial inclination angles of the upper tower drum and the lower tower drum are detected by using the off-line calibration detection device, at the moment, the initial detection data of the first inclination sensor and the second inclination sensor can be adjusted according to the initial inclination angles of the upper tower drum and the lower tower drum, then the data processing and analyzing device calculates the inclination angles of the first inclination sensor and the second inclination sensor through an algorithm to obtain the dynamic inclination data of the tower drums, the processed result is transmitted to the server to be stored, and the remote operation access terminal can check corresponding drawing information through the connection server. In addition, the first-order natural frequency detector can monitor the first-order natural frequency of the tower drum on line in real time, when the tower drum structure is deformed or damaged, the first-order natural frequency of the tower drum can change, and the first-order natural frequency detector can send the detected first-order natural frequency of the vibration to the data processing and analyzing device to identify the damaged state of the tower drum structure. In addition, the looseness detection device can detect the relative rotation angle of the nut and the bolt body, so that the looseness degree is obtained, and online monitoring of the looseness degree is carried out. The utility model discloses carry out multiple on-line monitoring from three aspects such as the dynamic slope data of a tower section of thick bamboo, the one-order vibration natural frequency of a tower section of thick bamboo and connecting bolt not hard up degree, improved the safety inspection nature of a tower section of thick bamboo greatly, guarantee wind generating set's normal operating.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of an off-line calibration detecting device according to an embodiment of the present invention.
Detailed Description
In order to make the technical means, technical features, achievement purposes and effects of the present invention easily understood and appreciated, the present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and fig. 2, the present invention relates to an online monitoring system for wind turbine tower status, which comprises a first inclination sensor 210 disposed on the inner wall of the upper tower 100a and a second inclination sensor 220 disposed on the inner wall of the lower tower 100 b. For convenience of installation, the inner walls of the upper tower 100a and the lower tower 100b are provided with an upper suspension plate 110a and a lower suspension plate 110b, respectively, and a first inclination sensor 210 and a second inclination sensor 220 are fixed to the upper suspension plate 110a and the lower suspension plate 110b, respectively.
The first inclination sensor 210 and the second inclination sensor 220 are respectively connected to the data processing and analyzing device 400, and the first inclination sensor 210 and the second inclination sensor 220 transmit the respective inclination data monitored to the data processing and analyzing device 400. In order to ensure stability of data transmission, the data processing and analyzing device 400 is disposed in the lower tower 100b, the data processing and analyzing device 400 is connected to the server 500 through an ethernet, and the data processing and analyzing device 400 has a data receiving terminal capable of receiving data of a component connected thereto through a wired or wireless manner. The data processing and analyzing device 400 in this embodiment is an industrial computer. The server 500 is connected to the remote operation access terminals 600, and the number of the remote operation access terminals 600 in this embodiment is three, and the three are a supplier remote operation access terminal, a maintenance worker remote operation access terminal, and a wind power user remote operation access terminal.
The on-line wind turbine tower state monitoring system further comprises an off-line calibration detection device 230 for calibrating the initial tilt angle of the upper tower 100a and the lower tower 100b, a first-order natural frequency vibration detector 700 and a looseness detection device 800. The offline calibration detecting device 230 in this embodiment includes a single axial beam tilt sensor 231 for measuring tilt angles of at least three different positions on the upper surface of the upper flange 101a of the upper tower 100a or the lower flange 101b of the lower tower 110b, respectively, where the upper flange 101a is disposed at the bottom of the upper tower, the lower flange 101b is disposed at the top of the lower tower, the upper surface of the upper flange 101a or the lower flange 101b of the tower is divided into three circumferential equal regions, and the single axial beam tilt sensor 231 measures each region once. The left end 231a and the right end 231b of the uniaxial beam tilt sensor 231 respectively span the upper surface of the upper flange 101a or the lower flange 101b, the uniaxial beam tilt sensor 231 is connected to the data processing and analyzing device 400, and the data processing and analyzing device 400 calculates at least three tilt angles measured by the uniaxial beam tilt sensor 231 to synthesize an initial maximum tilt angle and orientation of the upper tower 100a or the lower tower 100 b.
The first-order natural frequency detector 700 is arranged on the tower top of the upper tower 100a, the first-order natural frequency detector 700 is connected with the data processing and analyzing device 400, and the first-order natural frequency detector 700 is a double-shaft acceleration sensor and can monitor the first-order natural frequency of the tower on line in real time.
The upper flange 101a and the lower flange 101b are connected through a bolt body 810 and a nut 820, after a screw portion of the bolt body 810 penetrates through the upper flange 101a and the lower flange 101b, a screw portion of the bolt body 810 is screwed with the nut 820, a gasket is further arranged between the nut 820 and the upper flange 101a, a looseness detecting device 800 is arranged on the bolt body 810 and the nut 820, the looseness detecting device 800 is used for detecting a relative rotation angle generated between the nut 820 and the bolt body 810 and judging whether connection between the nut 820 and the bolt body 810 is loosened, and the looseness detecting device 800 is connected with the data processing and analyzing device 400. The technology of the looseness detection device 800 detecting whether the connection between the nut 820 and the bolt body 810 is loosened is the prior art, and can be detected by using a sensor or other detection equipment purchased from the market.
The server 500 in this embodiment is further connected to the alarm device 900, and when the server 500 receives that the first-order vibration natural frequency data of the tower detected by the first-order vibration natural frequency detector 700 exceeds a predetermined value, or when the server 500 receives that the dynamic inclination data of the tower detected by the first inclination sensor 210 or the second inclination sensor 220 exceeds a predetermined value, or when the server 500 receives that the looseness detection device 800 detects that the looseness degree between the nut 820 and the bolt body 810 exceeds a predetermined value, the alarm device 900 issues an alarm.
In operation, the server 500 is disposed in the central control room of the wind farm, and may first detect the initial tilt angles of the upper tower 100a and the lower tower 100b by using the offline calibration detecting device 230, and at this time, the initial detection data of the first tilt sensor 210 and the second tilt sensor 220 may be adjusted according to the initial tilt angles of the upper tower 100a and the lower tower 100 b. The data processing and analyzing device 400 calculates the inclination angles of the first inclination sensor 210 and the second inclination sensor 220 by an algorithm to obtain dynamic inclination data of the whole tower formed by the upper tower 100a and the lower tower 100b, the processed result is transmitted to the server 500 for storage, and the remote operation access terminal 600 can view corresponding drawing information through the connection server 500. In addition, the first-order natural frequency detector 700 can monitor the first-order natural frequency of the tower drum on line in real time, when the tower drum structure is deformed or damaged, the first-order natural frequency of the tower drum can change, and the first-order natural frequency detector 700 can send the detected first-order natural frequency of the vibration to the data processing and analyzing device 400 to identify the damaged state of the tower drum structure. In addition, the looseness detection device 800 detects the relative rotation angle of the nut 820 and the bolt body 810, so that the looseness degree is obtained, and online monitoring of the looseness degree is performed. The utility model discloses carry out multiple on-line monitoring from three aspects such as the dynamic slope data of a tower section of thick bamboo, the one-order vibration natural frequency of a tower section of thick bamboo and connecting bolt not hard up degree, improved the safety inspection nature of a tower section of thick bamboo greatly, guarantee wind generating set's normal operating.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An online monitoring system for the state of a tower of a wind turbine generator comprises:
the first inclination sensor is arranged on the inner wall of the upper tower;
the second inclination sensor is arranged on the inner wall of the lower tower;
the data processing and analyzing device is connected with the first inclination sensor and the second inclination sensor and used for calculating the inclination angles of the first inclination sensor and the second inclination sensor to obtain dynamic inclination data of the tower;
the server is connected with the data processing and analyzing device;
a remote operation access terminal connected with the server;
an off-line calibration detection device for calibrating the initial tilt angles of the upper tower and the lower tower;
it is characterized by also comprising:
the first-order natural frequency detector is arranged on the tower top of the upper tower and connected with the data processing and analyzing device;
an upper flange disposed at the bottom of the upper column;
the lower flange is arranged at the top of the lower tower;
the bolt body and the nut are connected with the upper flange and the lower flange;
the looseness detection device is used for detecting the relative rotation angle of the nut and the bolt body and is connected with the data processing and analyzing device.
2. The system of claim 1, wherein the first-order natural frequency vibration detector comprises a dual-axis acceleration sensor.
3. The system for on-line monitoring of the state of the tower of the wind turbine generator set according to claim 1, wherein the server is further connected to an alarm device, and the alarm device gives an alarm when the server receives that the first-order natural frequency data of the tower detected by the first-order natural frequency detector of the vibration exceeds a preset value, or when the server receives that the dynamic inclination data of the tower detected by the first inclination sensor or the second inclination sensor exceeds a preset value, or when the server receives that the looseness detection device detects that the looseness degree of the nut and the bolt body exceeds a preset value.
4. The system for on-line monitoring of the state of the tower of the wind turbine generator set according to claim 1, wherein the off-line calibration and detection device includes a single axial beam type tilt sensor for measuring tilt angles of at least three different positions on the upper surface of the upper flange or the lower flange, the single axial beam type tilt sensor has two ends respectively crossing the upper surface of the upper flange or the lower flange, the single axial beam type tilt sensor is connected to the data processing and analyzing device, and the data processing and analyzing device calculates at least three tilt angles measured by the single axial beam type tilt sensor through an algorithm to synthesize an initialized maximum tilt angle and an orientation of the upper tower or the lower tower.
5. The system for on-line monitoring of the state of the tower of the wind turbine generator set according to claim 1, wherein the inner walls of the upper tower and the lower tower are respectively provided with an upper suspension plate and a lower suspension plate, and the first inclination sensor and the second inclination sensor are respectively fixed on the upper suspension plate and the lower suspension plate.
6. The on-line monitoring system for the state of the tower of the wind turbine generator set according to claim 1, wherein the data processing and analyzing device is disposed in the lower tower, and the data processing and analyzing device is connected to the server through an ethernet.
7. The on-line monitoring system for the state of the tower of the wind turbine generator set according to claim 1, wherein the data processing and analyzing device comprises an industrial computer.
8. The on-line monitoring system for the state of the tower of the wind turbine generator set according to claim 1, wherein the data processing and analyzing device has a data receiving end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020709126.7U CN212003450U (en) | 2020-05-01 | 2020-05-01 | Wind turbine generator system tower section of thick bamboo state on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020709126.7U CN212003450U (en) | 2020-05-01 | 2020-05-01 | Wind turbine generator system tower section of thick bamboo state on-line monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN212003450U true CN212003450U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020709126.7U Active CN212003450U (en) | 2020-05-01 | 2020-05-01 | Wind turbine generator system tower section of thick bamboo state on-line monitoring system |
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| Country | Link |
|---|---|
| CN (1) | CN212003450U (en) |
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2020
- 2020-05-01 CN CN202020709126.7U patent/CN212003450U/en active Active
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