CN219865344U - Fan damage monitoring device and system - Google Patents
Fan damage monitoring device and system Download PDFInfo
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- CN219865344U CN219865344U CN202321017795.8U CN202321017795U CN219865344U CN 219865344 U CN219865344 U CN 219865344U CN 202321017795 U CN202321017795 U CN 202321017795U CN 219865344 U CN219865344 U CN 219865344U
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- 230000006378 damage Effects 0.000 title claims abstract description 56
- 238000012806 monitoring device Methods 0.000 title claims abstract description 41
- 238000012544 monitoring process Methods 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 20
- 239000002390 adhesive tape Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
The utility model discloses a fan damage monitoring device and system, and belongs to the technical field of fans. This fan damage monitoring devices includes: a monitoring section and a laser emitting section; the laser emission part comprises a laser generator and at least two laser emission pipes, and the laser emission pipes are respectively connected with the laser generator; the monitoring part comprises a sensor and a calibration piece, wherein the sensor is aligned with the calibration piece along the vertical direction, and the sensor is used for monitoring the distance between the sensor and the calibration piece. The fan damage monitoring system comprises the fan damage monitoring device and at least two monitors. The device has realized the monitoring to the damage of fan concrete foundation.
Description
Technical Field
The utility model relates to the technical field of fans, in particular to a fan damage monitoring device and system.
Background
A wind power generator set typically includes an upper nacelle, blades, a middle steel tower and a lower reinforced concrete foundation (fig. 1). The connection of the steel structure tower and the reinforced concrete foundation has various forms, wherein the foundation ring type connection is the main connection form of the fan foundation in China at present (figure 2). The steel foundation ring is fixed and leveled in advance before concrete pouring, and is connected with the upper tower barrel through bolts after concrete pouring maintenance.
In the running process of the fan, the tower drum swings and twists under the actions of wind load, blade inertial load and the like, the foundation ring is required to bear reciprocating bending moment and torque transmitted by the tower drum, and the bending moment and torque are transmitted to the concrete foundation through the side wall (bonding with concrete) and the bottom flange (bonding and biting with concrete). Under the long-term action of the reciprocating load, the concrete near the side wall of the foundation ring and the lower flange is easy to fatigue damage, so that the concrete in the area is broken and void (figure 3), the swing amplitude of the tower barrel is overlarge, and the shutdown is caused.
In the running process of the fan, the tower drum transmits load to the foundation. Due to uneven settlement of foundation soil or local destruction of the foundation, the foundation is inclined, and thus the tower is inclined. Because the tower belongs to a high-rise structure, the height difference caused by the tiny inclination of the bottom can be amplified by tens of times at the top, and the nacelle is deviated. The long-term inclination of the tower can cause a series of problems such as aggravation of concrete foundation damage, uneven stress of the bolts of the tower and the like. Therefore, it is necessary to monitor the degree of damage to the concrete foundation.
Disclosure of Invention
The utility model aims to overcome the technical defects, and provides a fan damage monitoring device and a fan damage monitoring system, which solve the technical problem of how to monitor the damage degree of a concrete foundation in the prior art.
In order to achieve the technical purpose, the technical scheme of the utility model provides a fan damage monitoring device, which comprises: a monitoring section and a laser emitting section; the laser emission part comprises a laser generator and at least two laser emission pipes, and the laser emission pipes are respectively connected with the laser generator; the monitoring part comprises a sensor and a calibration piece, wherein the sensor is aligned with the calibration piece along the vertical direction, and the sensor is used for monitoring the distance between the sensor and the calibration piece.
In some embodiments, the laser light emitting device further comprises a housing, the laser light emitting portion and the sensor being disposed within the housing; and/or, still include the support, the mark piece is located the top of support, the support is used for adjusting mark piece's vertical height and position.
In some embodiments, the top of the shell is provided with a reentrant portion and a connector, the surface of the reentrant portion is provided with the connector, and the connector is used for enabling the shell to be adsorbed on the bottom surface of the foundation ring flange.
In some embodiments, the connector is a magnet.
In some embodiments, the sensor is an eddy current displacement sensor comprising an eddy current displacement sensing pre-stage and an eddy current emitting end, the eddy current emitting end being connected to the eddy current displacement sensing pre-stage, the eddy current emitting end extending from the housing, the eddy current emitting end being aligned with the calibration piece.
In some embodiments, the calibration piece is a metal plate.
In some embodiments, the sensor further comprises a positioning member disposed on the eddy current emitting end, the positioning member for aiming at a position between the eddy current emitting end and the calibration member.
In some embodiments, the positioning member is a positioning strip.
In addition, the utility model also provides a fan damage monitoring system which comprises the fan damage monitoring device and at least two monitors, wherein the mounting positions of the monitors are positions corresponding to the laser emitted by the laser emitting tube in the fan damage monitoring device; the monitor comprises a sensor and a calibration member, wherein the sensor is aligned with the calibration member, and the sensor is used for monitoring the distance between the sensor and the calibration member.
In some embodiments, the fan damage monitoring device further comprises a data card, the data card is respectively connected with the fan damage monitoring device and the monitor, the data card comprises a data acquisition card and a power adapter, the power adapter supplies power for the sensor and the laser emitting part, and the data acquisition card is used for acquiring data of the sensor for centralized storage.
Compared with the prior art, the utility model has the beneficial effects that: install on the flange ring when fan damage monitoring devices uses, the device includes: a monitoring section and a laser emitting section; the laser emission part comprises a laser generator and at least two laser emission pipes, the laser emission pipes are respectively connected with the laser generator, laser emitted by the laser generator is emitted through the laser emission pipes, the installation position of the monitor is determined, and the mutual spatial relationship of three or more monitoring devices can be determined by utilizing the principle that at least three points determine one plane; according to the vertical displacement of three measuring points of three monitoring equipment monitoring for the concrete foundation at any moment, the plane that three measuring points confirmed is the plane that the flange ring was located, can calculate and confirm whole flange ring and be in for the space state of concrete at any moment, monitoring part includes sensor and mark piece, the sensor is aimed at along the vertical direction mark piece, the vertical position between sensor and the mark piece can be monitored to the sensor, and then just can confirm whole flange ring and be in for the space state of concrete foundation at any moment, utilizes space state data to judge the inside damage degree of foundation ring to judge the inside damage degree of concrete foundation, realized the monitoring to the damage of concrete foundation.
Drawings
Fig. 1 is a schematic structural view of a fan in the prior art.
Fig. 2 is a schematic structural view of a foundation ring in the prior art.
Fig. 3 is a schematic view of a damaged structure of a concrete foundation in the prior art.
Fig. 4 is a schematic structural view of the fan damage monitoring device in embodiment 1 of the present utility model mounted on a flange.
Fig. 5 is a schematic view showing a structure in which a fan damage monitoring device in embodiment 1 of the present utility model is mounted on a flange.
Fig. 6 is a schematic structural diagram of a fan damage monitoring device in embodiment 1 of the present utility model.
Fig. 7 is a schematic structural view of a laser emitter in embodiment 1 of the present utility model.
Fig. 8 is a schematic diagram of the monitoring principle in embodiment 1 of the present utility model.
Fig. 9 is a schematic structural diagram of a fan damage monitoring system in embodiment 1 of the present utility model.
Reference numerals illustrate: 0. a base ring flange; 1. a laser generator; 2. a laser emitting tube; 3. a sensor; 31. an eddy current displacement sensing front-end processor; 32. an eddy current transmitting end; 33. a positioning piece; 4. a calibration member; 5. a housing; 51. a connecting piece; 6. a bracket; 7. a data card; 8. an electric wire; A. a fan damage monitoring device; B. and a monitor.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
Referring to fig. 4-7, this embodiment provides a fan damage monitoring device a, including: a monitoring section and a laser emitting section; the laser emission part comprises a laser generator 1 and two laser emission tubes 2, and the laser emission tubes 2 are respectively connected with the laser generator 1; the monitoring part comprises a sensor 3 and a calibration piece 4, the sensor 3 is aligned with the calibration piece 4 along the vertical direction, and the sensor 3 is used for monitoring the distance between the sensor 3 and the calibration piece 4.
On the basis of the above embodiment, the present embodiment further includes a housing 5, and the laser emitting portion and the sensor 3 are provided in the housing 5. The housing 5 enables integration of the laser emitting part and the sensor 3, and in addition, enables the laser emitting part and the sensor 3 to be located at the same position, so that the installation position of the monitoring device is the monitoring position.
On the basis of the above embodiment, the present embodiment further includes a bracket 6, the calibration member 4 is disposed on top of the bracket 6, and the bracket 6 is used for adjusting the vertical height and position of the calibration member 4. The support 6 enables the positioning and the position adjustment of the calibration piece 4. Further, the stand 6 in this embodiment is a tripod.
On the basis of the above embodiment, the top of the housing 5 of the present embodiment is provided with a reentrant portion (not shown in the drawings but easily understood) and a connector 51, and the surface of the reentrant portion is provided with the connector 51 for the connector 51 to realize the adsorption of the housing 5 to the bottom surface of the foundation ring flange 0. The reentrant portion enables the fitting of the housing 5 with the foundation ring flange 0 and the connection 51 enables the connection of the housing 5 with the foundation ring flange 0.
In addition to the above embodiment, the connector 51 of this embodiment is a magnet. The magnet can realize the close connection of the shell 5 and the foundation ring flange 0, and is convenient for the disassembly and the installation of the shell 5. And meanwhile, the central axis of the shell is tangential to the inner edge of the flange.
Based on the above embodiment, the sensor 3 of this embodiment is an eddy current displacement sensor, which includes an eddy current displacement sensor front end 31 and an eddy current emission end 32, the eddy current emission end 32 is connected with the eddy current displacement sensor front end 31, the eddy current emission end 32 extends out from the housing 5, and the eddy current emission end 32 is aligned with the calibration member 4. The eddy current displacement sensor can accurately monitor the displacement and change of the calibration piece 4 in the vertical direction. The electric vortex emission end 32 is fixed on the shell by an inner nut and an outer nut, and the central axis of the electric vortex emission end 32 coincides with the central axis of the shell 5, namely, the central axis of the electric vortex emission end 32 coincides with the inner edge of the basic ring flange after the device is installed. On the basis of the above embodiment, the calibration member 4 of this embodiment is a metal plate.
On the basis of the above embodiment, the sensor 3 of the present embodiment further includes a positioning member 33, the positioning member 33 is disposed on the eddy current emitting end 32, and the positioning member 33 is used for aiming at a position between the eddy current emitting end 32 and the metal plate. When the device is installed, the position between the eddy current transmitting end 32 and the metal plate is regulated by the regulating bracket 6, one end of the positioning piece 33 is connected with the eddy current transmitting end 32, the other end of the positioning piece points to the metal plate, and the position between the eddy current transmitting end 32 and the metal plate can be indirectly determined through the position of the positioning piece 33 on the calibration piece 4.
On the basis of the above embodiment, the positioning member 33 of this embodiment is a positioning rubber strip. One end of the positioning adhesive tape can be attached to the eddy current transmitting end 32, the positioning adhesive tape is nonmetallic and is made of rubber generally, monitoring to a metal plate cannot be affected, adhesive tapes made of rubber are attached to two sides of the eddy current transmitting end 32 in the embodiment, the adhesive tape length is required to ensure that the adhesive tapes extend out of the eddy current transmitting end 32 for a certain distance, and the distance is different according to different sensor powers. Further, the metal plate is a metal circular plate, the center of the upper surface of the circular metal plate is provided with a color print, the print is a circle, the diameter of the circle is the same as the diameter of the electric vortex emission end 32, the height of the metal circular plate is adjusted until the positioning adhesive tape touches the circle center print on the metal circular plate, and the position of the metal circular plate can be adjusted to be proper.
1-9, the embodiment also provides a fan damage monitoring system, which comprises the fan damage monitoring device A and at least two monitors B, wherein the installation positions of the monitors B are positions corresponding to the laser emitted by the laser emitting tube 2 in the fan damage monitoring device A; the monitor B comprises a sensor 3 and a calibration member 4, the sensor 3 being aligned with the calibration member 4, the sensor 3 being arranged to monitor the distance between the sensor 3 and the calibration member 4. When the system is used, the fan damage monitoring device A is firstly installed at any position of the tower bottom flange, the laser emission tube 2 of the device emits laser, the pointed position of the laser spot is the installation position of the monitor B, and after the monitor B is installed, the real-time monitoring of the system on the fan damage can be realized. In this embodiment, the difference between the monitor B and the fan damage monitoring device a is that the monitor B does not include a laser emitting portion, but in fact, if the monitor B also includes a laser emitting portion, only one device is used to determine the mounting points of the other two devices, and the mounting of the devices and the implementation of the monitoring function are not affected.
On the basis of the embodiment, the embodiment further comprises a data card 7, the data card 7 is connected with the fan damage monitoring device A and the monitor B through wires 8, the data card 7 comprises a data acquisition card and a power adapter, the power adapter supplies power for the sensor 3 and the laser emitting part, and the data acquisition card is used for acquiring and storing data of the sensor 3 in a centralized mode.
Monitoring principle:
the base ring flange 0 is circular and has a diameter D. In connection with fig. 8 and 9, D, a, b are known, i.e. the mutual spatial relationship between the three monitors can be determined. According to the vertical displacement of the three measuring points monitored by the three monitors relative to the concrete at any time, the space state of the whole foundation ring flange relative to the concrete at any time can be calculated and determined. And judging the loosening degree of the foundation ring by utilizing the space state data, thereby judging the damage degree of the interior of the concrete. It should be noted that, a specific calculation method is derived from the prior art and is not an innovation of the present utility model, for example, the calculation method may be a method proposed in patent CN111220123 a.
Other advantages of the utility model:
1. the device is light and convenient to carry;
2. the operation is simple, and no professional requirements are imposed on users;
3. the field test speed is high, and the downtime of the fan is short;
4. the tower is operated inside and is not disturbed by weather.
The method comprises the following steps of:
1. closing the fan;
2. installing a fan damage monitoring device at any position of a base ring flange and connecting the fan damage monitoring device with a data card;
3. determining the mounting position of a monitor according to two laser light points of the fan damage monitoring device;
4. installing a monitor and connecting with the data card;
5. placing a tripod under each monitoring device, and adjusting the height of the metal circular plate until the positioning adhesive tape touches the circle center print on the metal circular plate;
6. and starting the fan, and collecting the vertical vibration of the foundation ring flange relative to the ground by the system.
The above-described embodiments of the present utility model do not limit the scope of the present utility model. Any other corresponding changes and modifications made in accordance with the technical idea of the present utility model shall be included in the scope of the claims of the present utility model.
Claims (10)
1. A fan damage monitoring device, comprising: a monitoring section and a laser emitting section; the laser emission part comprises a laser generator and at least two laser emission pipes, and the laser emission pipes are respectively connected with the laser generator; the monitoring part comprises a sensor and a calibration piece, wherein the sensor is aligned with the calibration piece along the vertical direction, and the sensor is used for monitoring the distance between the sensor and the calibration piece.
2. The fan damage monitoring device of claim 1, further comprising a housing, the laser emitting portion and the sensor being disposed within the housing; and/or, still include the support, the mark piece is located the top of support, the support is used for adjusting mark piece's vertical height and position.
3. The fan damage monitoring device of claim 2, wherein the top of the housing is provided with a reentrant portion and a connector, the surface of the reentrant portion is provided with the connector, and the connector is used for enabling the housing to be adsorbed to the bottom surface of the base ring flange.
4. A fan damage monitoring device according to claim 3, wherein the connector is a magnet.
5. The fan damage monitoring device of claim 2, wherein the sensor is an eddy current displacement sensor comprising an eddy current displacement sensing front end and an eddy current emitting end, the eddy current emitting end being connected to the eddy current displacement sensing front end, the eddy current emitting end extending from the housing, the eddy current emitting end being aligned with the calibration member.
6. The fan damage monitoring device of claim 1 or 5, wherein the calibration member is a metal plate.
7. The fan damage monitoring device of claim 5, wherein the sensor further comprises a positioning member disposed on the eddy current emitter, the positioning member configured to target a position between the eddy current emitter and the calibration member.
8. The fan damage monitoring device of claim 7, wherein the positioning member is a positioning adhesive strip.
9. A fan damage monitoring system, which is characterized by comprising the fan damage monitoring device and at least two monitors, wherein the fan damage monitoring device is any one of claims 1-8, and the installation positions of the monitors are positions corresponding to laser emitted by a laser emitting tube in the fan damage monitoring device; the monitor comprises a sensor and a calibration member, wherein the sensor is aligned with the calibration member, and the sensor is used for monitoring the distance between the sensor and the calibration member.
10. The fan damage monitoring system of claim 9, further comprising a data card, the data card being respectively connected to the fan damage monitoring device and the monitor, the data card comprising a data acquisition card and a power adapter, the power adapter supplying power to the sensor and the laser emitting portion, the data acquisition card being configured to acquire data of the sensor for centralized storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321017795.8U CN219865344U (en) | 2023-04-29 | 2023-04-29 | Fan damage monitoring device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321017795.8U CN219865344U (en) | 2023-04-29 | 2023-04-29 | Fan damage monitoring device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865344U true CN219865344U (en) | 2023-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321017795.8U Active CN219865344U (en) | 2023-04-29 | 2023-04-29 | Fan damage monitoring device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865344U (en) |
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2023
- 2023-04-29 CN CN202321017795.8U patent/CN219865344U/en active Active
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