CN213805516U - Dynamic monitoring system of fan foundation ring - Google Patents
Dynamic monitoring system of fan foundation ring Download PDFInfo
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- CN213805516U CN213805516U CN202022328713.4U CN202022328713U CN213805516U CN 213805516 U CN213805516 U CN 213805516U CN 202022328713 U CN202022328713 U CN 202022328713U CN 213805516 U CN213805516 U CN 213805516U
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Abstract
The utility model provides a dynamic monitoring system of fan foundation ring. This dynamic monitoring system of fan foundation ring includes: level bubble, device box, unipolar tilt angle sensor, laser displacement sensor, data acquisition module, device fixed bolster, fixing support, laser reflection panel, resistance strain gauge and data processing terminal. Use the utility model discloses can be fast, monitor the vertical displacement of fan foundation ring dynamically effectively.
Description
Technical Field
The application relates to the technical field of engineering structure monitoring, in particular to a dynamic monitoring system of a fan foundation ring. The system is a dynamic monitoring system for the vertical displacement of the fan foundation ring, which takes the elastic deformation of the foundation ring into consideration.
Background
In recent years, the fan has the safety accidents that the foundation ring is separated from the peripheral concrete, the fan tower barrel shakes too much to cause the alarm stop of the fan, the fan cannot normally operate and even falls down. Therefore, the basic ring of the wind turbine needs to be monitored in real time so as to avoid corresponding safety accidents as much as possible.
The monitoring technology in the prior art usually adopts an inclinometer to detect the inclination angle of a wind turbine tower, the monitoring technology actually monitors tower equipment of a wind turbine, the monitoring result reflects the deformation of the tower equipment, and the change of the anchoring capacity of a wind power foundation to a foundation ring cannot be directly reflected, namely, the weak part with lower safety margin, namely the damage degree of concrete at the periphery of the foundation ring cannot be monitored and early warned.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a dynamic monitoring system of fan foundation ring to can monitor the vertical displacement of fan foundation ring fast, effectively dynamically.
The technical scheme of the utility model specifically be so realized:
a dynamic monitoring system of a wind turbine foundation ring comprises: the device comprises a leveling bubble, a device box, a single-shaft tilt angle sensor, a laser displacement sensor, a data acquisition module, a device fixing bracket, a leveling nut, a fixing support, a laser reflection panel, a resistance strain gauge and a data processing terminal;
the device fixing bracket includes: side plates and a top plate;
the inner side of the fixed support is fixedly connected with the outer side of the side plate of the device fixing support; the outer side of the fixed support is fixed on the side wall of a flange on a base ring of the fan;
one side of the device box is connected with a side plate of the device fixing bracket;
the level bubble is arranged at the top of the device box;
the single-axis tilt angle sensor and the data acquisition module are arranged in the device box;
the laser displacement sensor is arranged at the bottom of the device box;
the single-axis tilt angle sensor and the laser displacement sensor are respectively connected with the data acquisition module through data lines;
the laser reflection panel is arranged on the top surface of the foundation concrete of the fan and corresponds to the laser displacement sensor;
the resistance strain gauge is arranged on the inner side wall of the base ring of the fan; the resistance strain gauge is connected with the data acquisition module through a data line;
the data acquisition module is connected with the data processing terminal through a data line.
Preferably, the dynamic monitoring system of the wind turbine foundation ring further includes: an interactive display interface;
the interactive display interface is arranged on the side surface of the device box and is connected with the data acquisition module;
and the interactive display interface is used for synchronously displaying corresponding data of the dynamic monitoring system of the fan foundation ring and setting the sampling frequency of the single-axis tilt angle sensor and the laser displacement sensor through the interactive display interface.
Preferably, the dynamic monitoring system of the wind turbine foundation ring further includes: a power interface and a data transmission interface;
one end of the power supply interface is respectively connected with the single-shaft tilt angle sensor and the laser displacement sensor, and the other end of the power supply interface is connected with an external power supply;
one end of the data transmission interface is respectively connected with the single-axis tilt sensor, the laser displacement sensor and the resistance strain gauge, and the other end of the data transmission interface is connected with the data processing terminal.
Preferably, the dynamic monitoring system of the wind turbine foundation ring further includes: an alarm;
the data processing terminal is further used for sending an alarm instruction to the alarm when the calculated relative vertical displacement is larger than a preset displacement threshold;
and the alarm is used for giving an alarm according to the alarm instruction.
Preferably, the laser reflection panel is fixed to the top surface of the foundation concrete of the wind turbine by an anchor bolt.
As can be seen from the above, in the dynamic monitoring system of the fan foundation ring in the utility model, because the single-axis tilt angle sensor, the laser displacement sensor and the resistance strain gauge are arranged in the monitoring system, the corresponding tilt angle value, the distance value from the system to the top surface of the foundation concrete of the fan and the dynamic strain value of the foundation ring under the wind load can be obtained by measurement, and the relative vertical displacement of the foundation ring of the fan at the measuring point can be obtained by respectively calculating according to the tilt angle value, the distance value and the dynamic strain value, and the dynamic elastic deformation of the foundation ring of the fan at the measuring point under the wind load, so that the dynamic monitoring and early warning can be rapidly, effectively and intuitively carried out on the vertical displacement of the fan foundation ring, thereby effectively saving the manpower and time operation and maintenance cost of the wind power plant, greatly improving the later operation and maintenance efficiency of the wind power plant, and improving the economic benefit, avoid falling the tower etc. serious incident.
Drawings
Fig. 1 is a side sectional view of a dynamic monitoring system for a wind turbine foundation ring according to an embodiment of the present invention.
Fig. 2 is a side sectional view of a dynamic monitoring system for a wind turbine foundation ring in another embodiment of the present invention.
Fig. 3 is a top view of a dynamic monitoring system for a wind turbine foundation ring in another embodiment of the present invention.
Fig. 4 is a schematic diagram of an interactive display interface according to an embodiment of the present invention.
Fig. 5 is a schematic view of the arrangement of the measuring points in an embodiment of the present invention.
Detailed Description
In order to make the technical solution and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The technical scheme of the utility model, a dynamic monitoring system of fan foundation ring is proposed.
As shown in fig. 1-3, the dynamic monitoring system of the fan foundation ring in the embodiment of the present invention includes: the device comprises a leveling bubble 1, a device box 2, a single-axis tilt angle sensor 4, a laser displacement sensor 5, a data acquisition module 6, a device fixing support 9, a fixing support 11, a laser reflection panel 12, a resistance strain gauge 14 and a data processing terminal (not shown in the figure);
wherein the device fixing bracket 9 includes: side plates and a top plate;
the inner side of the fixed support 11 is fixedly connected with the outer side of the side plate of the device fixing bracket 9; the outer side of the fixed support 11 is fixed on the side wall of a flange 13 on a base ring of the fan;
one side of the device box 2 is connected with a side plate of the device fixing bracket 9;
the level bubble 1 is arranged at the top of the device box 2;
the single-shaft tilt angle sensor 4 and the data acquisition module 6 are arranged in the device box 2;
the laser displacement sensor 5 is arranged at the bottom of the device box 2;
the single-axis tilt angle sensor 4 and the laser displacement sensor 5 are respectively connected with the data acquisition module 6 through data lines;
the laser reflection panel 12 is arranged on the top surface of the foundation concrete of the fan and at a position corresponding to the laser displacement sensor 5;
the resistance strain gauge 14 is arranged on the inner side wall of the base ring of the fan; the resistance strain gauge 14 is connected with the data acquisition module 6 through a data line 15;
the data acquisition module 6 is connected with the data processing terminal through a data line.
In addition, as shown in fig. 2, in another preferred embodiment of the present invention, the top of the device case may be connected to the top of the device fixing bracket.
In addition, as shown in fig. 1 and fig. 2, as an example, in another preferred embodiment of the present invention, the dynamic monitoring system of the wind turbine foundation ring may further include: a leveling nut 10;
one side of the device box 2 is connected with a side plate of the device fixing bracket 9 through a plurality of leveling nuts 10;
alternatively, the top of the device case 2 is connected to the top plate of the device fixing bracket 9 through a plurality of leveling nuts 10.
In addition, as an example, in another preferred embodiment of the present invention, the fixing support 11 may be a magnetic fixing support.
When the dynamic monitoring system of the fan foundation ring is installed, the outer side of the magnetic fixing support 11 can be fixed on the side wall of the flange 13 on the fan foundation ring, and then the horizontal installation of the whole device can be realized by adjusting a plurality of (for example, 3) leveling nuts and cooperatively observing the condition of the leveling bubbles. Then, fixing the laser reflection panel 12 on the top surface of the foundation concrete of the wind turbine, and making the positions of the laser reflection panel 12 and the high-precision laser displacement sensor 5 correspond to each other, the laser reflection panel 12 can be used for reflecting the laser emitted by the laser displacement sensor 5. Since the surface of the laser reflection panel 12 is smooth, the adverse effect of the unevenness of the surface of the foundation concrete on the top surface of the foundation ring of the wind turbine on the measurement result can be reduced. Meanwhile, the resistance strain gauge 14 is arranged on the inner side wall of the basic ring of the fan and is connected with the data acquisition module 6 through a data line 15.
After the dynamic monitoring system of the fan foundation ring is installed, a corresponding inclination angle value, namely the inclination angle value of a flange on the foundation ring in a plane perpendicular to the tangent line of a measuring point of the foundation ring, can be obtained through measurement of the single-shaft inclination angle sensor 4, the inclination angle value can reflect the change of the horizontal angle of the measuring point of the dynamic monitoring system in the plane perpendicular to the tangent line of the fan foundation ring, and the inclination angle value can be transmitted to the data acquisition module 6 through a data line and transmitted to the data processing terminal through the data acquisition module 6; meanwhile, the distance from the high-precision laser displacement sensor 5 to the top surface of the foundation concrete of the fan can be measured by the high-precision laser displacement sensor 5 in the dynamic monitoring system, and the distance value can be transmitted to the data acquisition module 6 through a data line and transmitted to the data processing terminal through the data acquisition module 6; in addition, a dynamic strain value of the foundation ring at the measuring point under the action of the wind load can be measured through the resistance strain gauge 14 in the dynamic monitoring system, and the strain value can be transmitted to the data acquisition module 6 through a data line and transmitted to the data processing terminal through the data acquisition module 6.
The data processing terminal can calculate the relative vertical displacement of the base ring of the fan at the measuring point according to the received inclination angle value, the distance value and the strain value, and can calculate the dynamic elastic deformation of the base ring of the fan at the measuring point under the action of wind load according to the received strain value.
Therefore, the dynamic monitoring system of the fan foundation ring can realize the remote real-time monitoring of the dynamic vertical displacement and the dynamic elastic deformation of the fan foundation ring,
in addition, as an example, in another preferred embodiment of the present invention, the sampling frequencies of the single-axis tilt sensor 4, the laser displacement sensor 5, and the resistance strain gauge 14 may be preset, and the sampling frequencies of the single-axis tilt sensor 4, the laser displacement sensor 5, and the resistance strain gauge 14 may be made to be the same.
The technical scheme of the utility model, can set up unipolar inclination sensor 4, laser displacement sensor 5 and resistance strain gauge 14's sampling frequency in advance according to the needs of the practical application condition.
For example, in another preferred embodiment of the present invention, the sampling frequency may be 5 acquisitions per second, as an example.
In addition, as an example, in another preferred embodiment of the present invention, the dynamic monitoring system of the wind turbine foundation ring may further include: an interactive display interface 3;
the interactive display interface 3 is arranged on the side face of the device box 2, is connected with the data acquisition module 6 and is used for synchronously displaying corresponding data of a dynamic monitoring system of the fan foundation ring, and the interactive display interface 3 is provided with the sampling frequency of the single-axis inclination angle sensor 4 and the sampling frequency of the laser displacement sensor 5.
For example, as shown in fig. 4, in a preferred embodiment of the present invention, the corresponding data may include but is not limited to: sampling frequency, reference distance L0Initial tilt angle theta0Initial strain ε0Real-time distance L, real-time inclination angle theta and real-time strain epsilon.
Through the displayed corresponding data, the staff can obtain the corresponding data in real time from the interactive display interface 3, and can set the sampling frequency of the single-axis tilt sensor 4, the laser displacement sensor 5 and the resistance strain gauge 14 through the interactive display interface 3.
In addition, as an example, in another preferred embodiment of the present invention, the dynamic monitoring system of the wind turbine foundation ring may further include: a power supply interface 7 and a data transmission interface 8;
one end of the power interface 7 is respectively connected with the single-shaft tilt angle sensor 4 and the laser displacement sensor 5, and the other end of the power interface is connected with an external power supply (for example, a power supply system inside a wind power tower);
one end of the data transmission interface 8 is respectively connected with the single-axis tilt angle sensor 4, the laser displacement sensor 5 and the resistance strain gauge 14, and the other end is connected with the data processing terminal (for example, the data processing terminal is connected with the signal transmission line of the wind turbine generator set and transmits the measured data to the data processing terminal arranged in the wind power plant monitoring room).
In addition, as an example, in another preferred embodiment of the present invention, the dynamic monitoring system of the wind turbine foundation ring may further include: an alarm;
the data processing terminal is further used for sending an alarm instruction to the alarm when the calculated relative vertical displacement is larger than a preset displacement threshold;
and the alarm is used for giving an alarm according to the alarm instruction.
Therefore, the alarm can also realize the functions of early warning or alarming.
In addition, as an example, in another preferred embodiment of the present invention, the laser reflection panel 12 is fixed to the top surface of the foundation concrete of the wind turbine by an anchor bolt.
Additionally, the technical scheme of the utility model among, can be based on the dynamic monitoring system of foretell fan foundation ring, carry out dynamic monitoring to fan foundation ring through following mode:
and step 51, presetting a plurality of measuring point positions on a basic ring of the fan to be monitored.
The technical scheme of the utility model in, because the uncertainty of 360 degrees of wind load, consequently need set up the dynamic monitoring system of above-mentioned fan foundation ring respectively in a plurality of measurement station positions, carry out dynamic monitoring to a plurality of measurement station positions to can obtain more comprehensive monitoring data. Therefore, in this step, a plurality of site positions may be set in advance on the foundation ring of the wind turbine to be monitored.
For example, as shown in fig. 5, in a preferred embodiment of the present invention, 4 equidistant measuring point positions may be preset along the entire circumference of the wind turbine foundation ring; a measuring point position (namely the position of the device 1 in the figure 5) is required to be arranged at the position of the fan foundation ring corresponding to the main wind direction, and measuring point positions (namely the positions of the devices 2-4 in the figure 5) are arranged at intervals of 90 degrees.
And step 52, respectively installing the dynamic monitoring system of the fan foundation ring at each measuring point position.
When installing the dynamic monitoring system of above-mentioned fan foundation ring, can be fixed in the flange 13's on the foundation ring of fan lateral wall in the outside of the magnetism fixing support 11 among the dynamic monitoring system, utilize the powerful magnetism of magnetism fixing support 11, be fixed in on the flange lateral wall on the foundation ring, simultaneously, also realized the quick fixed mounting of equipment.
Step 53, before the wind turbine generator runs, obtaining a measured value (L) in an initial state through data obtained by measuring the single-axis inclination angle sensor, the laser displacement sensor and the resistance strain gauge0，θ0，ε0) And transmits the measured value as an initial reference value to the data processing terminal.
And step 54, after the wind turbine generator starts to operate, acquiring data obtained by measurement in real time through the single-axis inclination angle sensor, the laser displacement sensor and the resistance strain gauge, and transmitting the data obtained by measurement to the data processing terminal through the data acquisition module.
And step 55, the data processing terminal acquires and measures data in real time according to the received initial reference value and the data acquired by the single-axis inclination angle sensor, the laser displacement sensor and the resistance strain gauge, and calculates to acquire the relative vertical displacement and the dynamic elastic deformation of the foundation ring of the fan at the measuring point.
Therefore, through the steps 51-55, the dynamic monitoring system of the fan foundation ring can be used for remotely monitoring the dynamic vertical displacement and the dynamic elastic deformation of the fan foundation ring in real time.
In addition, the relative vertical displacement of the foundation ring of the wind turbine at the measuring point can be calculated by the following formula:
di＝Licosθi-(εi-ε0)H-L0cosθ0 (1)
wherein d isiIs the relative vertical displacement of the fan foundation ring at the measuring point at the moment i, L0Obtained by measuring with a laser displacement sensor before the operation of the wind turbineDistance value, ε0Is a strain value theta measured by a resistance strain gage before the wind turbine generator runs0For measuring the inclination angle value L obtained by the single-shaft inclination angle sensor before the wind turbine generator runsiIs a distance value, epsilon, measured by a laser displacement sensor at the moment i after the wind turbine generator starts to operateiThe strain value theta measured by the resistance strain gauge at the moment i after the wind turbine generator starts to operateiThe inclination angle value measured by the single-shaft inclination angle sensor at the moment i after the wind turbine generator starts to operate is shown, and H is the total height of the foundation ring of the wind turbine.
In addition, when the relative vertical displacement obtained by the calculation of the data processing terminal is greater than a preset displacement threshold value, an alarm can be given.
In summary, in the dynamic monitoring system of the wind turbine foundation ring, because the single-axis tilt angle sensor, the laser displacement sensor and the resistance strain gauge are arranged in the monitoring system, the corresponding tilt angle value, the distance value from the system to the top surface of the foundation concrete of the wind turbine and the dynamic strain value of the foundation ring under the wind load can be obtained through measurement, and the relative vertical displacement of the foundation ring of the wind turbine at the measuring point and the dynamic elastic deformation of the foundation ring of the wind turbine at the measuring point under the wind load can be respectively obtained through calculation according to the tilt angle value, the distance value and the dynamic strain value, so that the dynamic monitoring and early warning can be rapidly, effectively and intuitively carried out on the vertical displacement of the foundation ring of the wind turbine, the manpower and time operation and maintenance cost of the wind power plant can be effectively saved, the later operation and maintenance efficiency can be greatly improved, the operation and maintenance cost can be reduced, and the economic benefit can be improved, avoid falling the tower etc. serious incident.
Additionally, the utility model provides a dynamic monitoring system of fan foundation ring easy operation, practicality are stronger, can realize the real-time supervision to the vertical displacement of wind-powered electricity generation foundation ring developments, realize the meticulous control early warning to wind-powered electricity generation foundation key position, avoid foundation ring and basic concrete to throw off the risk of falling the tower even, guarantee wind turbine generator system normal operating.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a dynamic monitoring system of fan foundation ring which characterized in that, this dynamic monitoring system of fan foundation ring includes: the device comprises a leveling bubble, a device box, a single-axis tilt angle sensor, a laser displacement sensor, a data acquisition module, a device fixing support, a laser reflection panel, a resistance strain gauge and a data processing terminal;
the device fixing bracket includes: side plates and a top plate;
the inner side of the fixed support is fixedly connected with the outer side of the side plate of the device fixing support; the outer side of the fixed support is fixed on the side wall of a flange on a base ring of the fan;
one side of the device box is connected with a side plate of the device fixing bracket;
the level bubble is arranged at the top of the device box;
the single-axis tilt angle sensor and the data acquisition module are arranged in the device box;
the laser displacement sensor is arranged at the bottom of the device box;
the single-axis tilt angle sensor and the laser displacement sensor are respectively connected with the data acquisition module through data lines;
the laser reflection panel is arranged on the top surface of the foundation concrete of the fan and corresponds to the laser displacement sensor;
the resistance strain gauge is arranged on the inner side wall of the base ring of the fan; the resistance strain gauge is connected with the data acquisition module through a data line;
the data acquisition module is connected with the data processing terminal through a data line.
2. The wind turbine foundation ring dynamic monitoring system of claim 1, further comprising: an interactive display interface;
the interactive display interface is arranged on the side surface of the device box and is connected with the data acquisition module;
and the interactive display interface is used for synchronously displaying corresponding data of the dynamic monitoring system of the fan foundation ring and setting the sampling frequency of the single-axis tilt angle sensor and the laser displacement sensor through the interactive display interface.
3. The wind turbine foundation ring dynamic monitoring system of claim 1, further comprising: a power interface and a data transmission interface;
one end of the power supply interface is respectively connected with the single-shaft tilt angle sensor and the laser displacement sensor, and the other end of the power supply interface is connected with an external power supply;
one end of the data transmission interface is respectively connected with the single-axis tilt sensor, the laser displacement sensor and the resistance strain gauge, and the other end of the data transmission interface is connected with the data processing terminal.
4. The wind turbine foundation ring dynamic monitoring system of claim 1, further comprising: an alarm;
the data processing terminal is further used for sending an alarm instruction to the alarm when the calculated relative vertical displacement is larger than a preset displacement threshold;
and the alarm is used for giving an alarm according to the alarm instruction.
5. The wind turbine foundation ring dynamic monitoring system of claim 1, wherein:
the laser reflection panel is fixed on the top surface of the foundation concrete of the fan through anchor bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022328713.4U CN213805516U (en) | 2020-10-19 | 2020-10-19 | Dynamic monitoring system of fan foundation ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022328713.4U CN213805516U (en) | 2020-10-19 | 2020-10-19 | Dynamic monitoring system of fan foundation ring |
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| Publication Number | Publication Date |
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| CN213805516U true CN213805516U (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022328713.4U Active CN213805516U (en) | 2020-10-19 | 2020-10-19 | Dynamic monitoring system of fan foundation ring |
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| CN (1) | CN213805516U (en) |
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2020
- 2020-10-19 CN CN202022328713.4U patent/CN213805516U/en active Active
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