CN211549902U - Wind turbine generator system tower section of thick bamboo bolt looseness monitoring devices and system - Google Patents
Wind turbine generator system tower section of thick bamboo bolt looseness monitoring devices and system Download PDFInfo
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- CN211549902U CN211549902U CN201922230292.9U CN201922230292U CN211549902U CN 211549902 U CN211549902 U CN 211549902U CN 201922230292 U CN201922230292 U CN 201922230292U CN 211549902 U CN211549902 U CN 211549902U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 37
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims description 12
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- 241001330002 Bambuseae Species 0.000 title claims description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims description 12
- 239000011425 bamboo Substances 0.000 title claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 239000011324 bead Substances 0.000 claims description 25
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 2
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- 239000013307 optical fiber Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
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- 230000005540 biological transmission Effects 0.000 description 1
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a wind turbine tower cylinder bolt looseness monitoring devices and system, the device includes first external member, second external member and signal processing unit, first/two external members include first/two cylindrical rotating shell, first/two cylindrical fixed shell, first/two carbon film resistance card and first/two conductive metal location top pearl, the arc length of first/two carbon film resistance card in the access circuit can be calculated according to the change of electric signal to the signal processing unit, and then calculate the nut/nut loose angle through the arc length; the signal processing unit calculates the loosening angle of the bolt according to the loosening angle difference of the nut and the nut. The utility model has the advantages of reasonable design, can discover not hard up of bolt in the very first time, discerns quantity, constantly and the distribution of not hard up bolt, and the not hard up trend of control greatly reduces the monitoring cost, improves the not hard up accuracy and the promptness of monitoring of bolt.
Description
Technical Field
The utility model relates to a wind turbine generator system tower section of thick bamboo bolt not hard up monitoring technology especially relates to a wind turbine generator system tower section of thick bamboo bolt not hard up monitoring devices and system.
Background
The assembly and the fastening of the tower cylinder of the large-scale fan generator set are realized by using high-strength fastening bolts and nuts, and the tower cylinder of the fan generator set mainly plays a supporting role in the wind turbine generator set and absorbs the vibration of the set. The tower barrel bears complex and variable loads such as thrust, bending moment, torque load and the like, the vibration generated during the operation of the fan is extremely large, the vibration frequency is very high, and the flange plate is vibrated and cracked to cause the tower collapse of the fan due to the loosening or the breakage of the connecting bolt of the tower barrel of the wind turbine generator. To avoid this risk, it is conventional to periodically inspect the connecting bolts to see if there is a loosening or fracture between the bolt and the nut. The manual inspection has different inspection results from person to person and has great limitation because the manual inspection cannot be found in time. In recent years, wind power generation is developed rapidly in China, but due to the fact that wind power generation requirements are located in remote high-mountain regions, personnel cannot check the wind power generation at fixed time, bolts at the joint of key positions of a wind turbine generator are loosened under the interference of strong wind torsion and vibration, the safety of the wind turbine generator is greatly threatened, and the loosening of the bolts of the wind turbine generator is monitored on line because the bolts are not loosened and inverted, so that the online monitoring of the loosening of the bolts of the wind turbine generator is paid more and more attention.
Therefore, the patent specification with the publication number of CN104608795B discloses a railway track bolt looseness monitoring system, which comprises a laser emission module, a track optical fiber, a cutting device, a laser receiving module and a processing circuit module, wherein the processing circuit module comprises an electromagnetic relay, an alarm circuit module and a control circuit module for controlling a rail system; and the cutting device cuts the optical fiber when the bolt looses. When the rail bolt is loosened, the cutting device cuts off the optical fiber, the laser receiving module cannot receive optical signals, the alarm is realized, and meanwhile, a rail relay circuit is cut off. The monitoring system cannot detect the loosening condition of the connecting bolt at the first time, cannot guarantee the normal operation of the wind turbine generator and cannot effectively reduce the occurrence probability of safety accidents.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned problem that exists among the prior art, provide a wind turbine generator system tower section of thick bamboo bolt not hard up monitoring devices and system.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
a wind turbine tower bolt looseness monitoring device comprises a first external member, a second external member and a signal processing unit,
the first sleeve comprises a first cylindrical rotating shell and a first cylindrical fixing shell which is nested on the outer side of the first cylindrical rotating shell, a cavity with a corresponding specification is prefabricated in the first cylindrical rotating shell according to a nut of a fan tower bolt, when the nut is loosened, the first cylindrical rotating shell can rotate along with the nut, a first carbon film is inlaid in the inner wall of the first cylindrical fixing shell, a plurality of first conductive metal positioning top beads are mounted on the outer wall of the first cylindrical rotating shell, annular positioning holes matched with the first conductive metal positioning top beads are formed in the inner wall of the first cylindrical fixing shell, and one of the first conductive metal positioning top beads is connected with a lead as a first contact point of an electric signal; the first carbon film resistor disc, the first conductive metal positioning top bead and the signal processing unit are connected to form a conductive loop, when the first carbon film resistor disc and the first contact point are connected with an electric signal, the signal processing unit can calculate the arc length L of the first carbon film resistor disc connected into the circuit according to the change of the electric signal1Then through the arc length L1Calculating the angle α of the nut loosening;
the second sleeve member comprises a second cylindrical rotating shell and a second cylindrical fixed shell which is nested at the outer side of the second cylindrical rotating shell, a cavity with corresponding specification is prefabricated in the second cylindrical rotating shell according to a screw cap of a fan tower bolt, when the screw cap is loosened, the second cylindrical rotating shell can rotate along with the screw cap, a second carbon film resistor disc is embedded in the inner wall of the second cylindrical fixed shell, a plurality of second conductive metal positioning top beads are arranged on the outer wall of the second cylindrical rotating shell, an annular positioning hole matched with the second conductive metal positioning top beads is arranged on the inner wall of the second cylindrical fixing shell, one of the second conductive metal positioning top beads is connected with a lead as a second contact point of an electric signal, the second carbon film resistor disc, the second conductive metal positioning top bead and the signal processing unit are connected to form a conductive loop.
Furthermore, in the wind turbine tower bolt looseness monitoring device, when the second carbon film resistor disc and the second contact point are connected with the power supplyWhen the signal is in use, the signal processing unit can calculate the arc length L of the second carbon film resistor disc in the access circuit according to the change of the electrical signal2Then through the arc length L2Calculating an angle β of the nut loosening;
the signal processing unit is based on L1、L2Calculating the loosening angle n degrees of the bolt,
L1＝(U1*S1)/(I1*ρ1) Wherein U is1Connecting the first carbon film resistor to the voltage across the circuit part, I1Is the current passing through the first carbon film resistor sheet, S1Is the cross-sectional area, rho, of the first carbon film resistor disc1The resistivity of the first carbon film resistor sheet;
L2＝(U2*S2)/(I2*ρ2) Wherein U is2Connecting the second carbon film resistor to the voltage across the circuit part, I2For the current passing through the second carbon film resistor sheet, S2Is the cross-sectional area, rho, of the second carbon film resistor disc2The resistivity of the second carbon film resistor sheet;
n°＝(180*L1)/(π*r1)-(180*L2)/(π*r2) Wherein r is1Is the inner radius of the first cylindrical stationary housing; r is2The inner radius of the second cylindrical stationary housing.
Furthermore, in the wind turbine tower bolt looseness monitoring device, the first cylindrical fixing shell and the second cylindrical fixing shell are adsorbed on a flange of the fan through permanent magnets.
Furthermore, in the wind turbine tower bolt looseness monitoring device, a movable gap is reserved between the inner wall of the first cylindrical fixed shell and the outer wall of the first cylindrical rotating shell, and a movable gap is reserved between the inner wall of the second cylindrical fixed shell and the outer wall of the second cylindrical rotating shell.
Furthermore, in the wind turbine tower bolt looseness monitoring device, the first cylindrical rotating shell, the first cylindrical fixing shell, the second cylindrical rotating shell and the second cylindrical fixing shell are all made of insulating materials.
The utility model also provides a not hard up monitoring system of wind turbine generator system tower section of thick bamboo bolt, this system include not hard up monitoring devices of wind turbine generator system tower section of thick bamboo bolt, flange, bolt, data processing device and wind turbine generator system major control system, and not hard up monitoring devices of wind turbine generator system tower section of thick bamboo bolt sets up on the bolt, the data processing device is connected with not hard up monitoring devices of wind turbine generator system tower section of thick bamboo bolt, fan major control system numbers the bolt that needs to monitor on every layer of flange, numbers every section of thick bamboo, data processing device is to fan major control system with the data transmission of not hard up monitoring devices monitoring of wind turbine generator system tower section of thick bamboo bolt, fan major control system judges the state of monitoring bolt through the change of the not hard up angle of bolt, sends alarm signal.
Further, in the wind turbine generator tower bolt looseness monitoring system, the number and the positions of the wind turbine generator tower bolt looseness monitoring devices are determined according to the number and the positions of bolts.
Further, in the wind turbine tower bolt looseness monitoring system, the bolts are located on the same platform of the wind turbine tower and form a group, and the wind turbine tower bolt looseness monitoring device of each group is connected to the data processing device.
The utility model has the advantages that:
the utility model has the advantages of reasonable design, can discover not hard up of bolt in the very first time, discerns quantity, constantly and the distribution of not hard up bolt, and the not hard up trend of control greatly reduces the monitoring cost, improves the not hard up accuracy and the promptness of monitoring of bolt.
Of course, it is not necessary for any product to achieve all of the above advantages simultaneously in practicing the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a wind turbine generator tower bolt loosening monitoring device provided by an embodiment of the present invention, which is arranged on a wind turbine generator flange;
fig. 2 is a schematic structural view of a wind turbine tower bolt looseness monitoring device provided by an embodiment of the present invention;
FIG. 3 is a schematic view of the first and second conductive metal positioning beads of the present invention;
fig. 4 is a schematic structural view of a wind turbine tower bolt loosening monitoring system provided by an embodiment of the present invention;
fig. 5 is a circuit block diagram of a signal processing unit according to an embodiment of the present invention;
fig. 6 is a block diagram of a data processing device according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a method for monitoring bolt looseness of a tower of a wind turbine generator system provided by the embodiment of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
100-wind turbine tower bolt looseness monitoring device, 1-a first external member, 11-a first cylindrical fixed shell, 12-a first cylindrical rotating shell, 13-a first carbon film resistor disc, 14-a first conductive metal positioning top bead, 2-a second external member, 21-a second cylindrical fixed shell, 22-a second cylindrical rotating shell, 23-a second carbon film resistor disc, 24-a second conductive metal positioning top bead, and 3-a signal processing unit; 200-a flange; 300-bolt; 400-a data processing device; 500-a fan master control system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
The embodiment provides a wind turbine tower bolt looseness monitoring device, please refer to fig. 1-3, and the device comprises a first external member 1, a second external member 2 and a signal processing unit 3. The first kit 1 comprises two parts, a first cylindrical stationary housing 11 and a first cylindrical rotating housing 12, the first cylindrical stationary housing 11 being nested outside the first cylindrical rotating housing 12. The first cylindrical rotating shell 12 is made of an insulating material, a cavity with a corresponding specification is prefabricated into the shell according to a nut of a wind turbine tower bolt, the shell is used for being nested on the nut with the corresponding specification of the wind turbine tower, and if the nut is loosened, the first cylindrical rotating shell 12 rotates along with the nut. The first cylindrical rotating shell 12 is provided with a plurality of first conductive metal positioning top beads 14, and the first conductive metal positioning top beads 14 are arranged at the middle annular line position of the outer wall of the first cylindrical rotating shell 12 and used for being matched with and fixed on the first cylindrical fixing shell 11. One of the first conductive metal positioning top beads 14 is connected with a lead wire as a first contact point of an electrical signal. The first cylindrical fixed housing 11 is made of insulating material, and is made into a cavity slightly larger than the first cylindrical rotating housing 12 according to the size of the first cylindrical rotating housing 12, and the cavity can be nested outside the first cylindrical rotating housing 12 and keep a proper distance, and the first cylindrical fixed housing 11 is adsorbed on the flange 200 of the fan through a permanent magnet. The first cylindrical rotating shell 12 is matched and rotatably connected under the positioning action of the first conductive metal positioning top bead 14. A first carbon film resistor disc 13 is embedded on the inner wall of the first cylindrical fixed shell 11, the first carbon film resistor disc 13 is installed on the middle annular line position of the inner wall of the first cylindrical fixed shell 11, and the first carbon film resistor disc 13 is connected with a lead. When the first carbon film resistor 13 and the first contact point are connected to the electrical signal, the signal processing unit 3 may calculate the arc length L of the first carbon film resistor 13 connected to the circuit according to the change of the electrical signal1Then through the arc length L1The angle α at which the nut loosens is calculated.
The second sleeve 2 comprises a second cylinderThe two parts of the fixed shell 21 and the second cylindrical rotating shell 22 are formed, and the second cylindrical fixed shell 21 is nested outside the second cylindrical rotating shell 22. The second cylindrical rotating shell 22 is made of an insulating material, and a cavity with a corresponding specification is prefabricated into the shell according to a nut of a bolt of the fan tower so as to be nested on the nut with the corresponding specification of the fan tower, and if the nut is loosened, the second cylindrical rotating shell 22 rotates along with the nut. The second cylindrical rotating shell 22 is provided with a plurality of second conductive metal positioning top balls 24, and the second conductive metal positioning top balls 24 are arranged at the middle annular line position of the outer wall of the second cylindrical rotating shell 22 and are used for being matched with and fixed on the second cylindrical fixing shell 21. One of the second conductive metal positioning top beads 24 is connected with a wire as a second contact point of an electrical signal. The second cylindrical fixed housing 21 is made of insulating material, and is made into a cavity slightly larger than the second cylindrical rotating housing 22 according to the size of the second cylindrical rotating housing 22, and the cavity can be nested outside the second cylindrical rotating housing 22 and keep a proper distance, and the second cylindrical fixed housing 21 is attracted to the flange 200 of the fan through a permanent magnet. The second cylindrical rotating shell 22 is matched and rotatably connected under the positioning action of the first conductive metal positioning top bead 14. And a second carbon film resistor disc 23 is embedded on the inner wall of the second cylindrical fixed shell 21, the second carbon film resistor disc 23 is arranged at the middle annular line position of the inner wall of the second cylindrical fixed shell 21, and the carbon film resistor disc is connected with a lead. When the second carbon film resistor and the second contact point are connected to the electrical signal, the signal processing unit 3 can calculate the arc length L of the second carbon film resistor 23 connected to the circuit according to the change of the electrical signal2Then through the arc length L2The angle β of the nut loosening is calculated.
The signal processing unit 3 is used to calculate:
first carbon film resistor disc L1＝(U1*S1)/(I1*ρ1) Wherein U is1Connecting the first carbon film resistor to the voltage across the circuit part, I1Is the current passing through the first carbon film resistor sheet, S1Is the cross-sectional area, rho, of the first carbon film resistor disc1Resistance of the first carbon film resistor sheetRate;
second carbon film resistor disc L2＝(U2*S2)/(I2*ρ2) Wherein U is2Connecting the second carbon film resistor to the voltage across the circuit part, I2For the current passing through the second carbon film resistor sheet, S2Is the cross-sectional area, rho, of the second carbon film resistor disc2The resistivity of the second carbon film resistor sheet;
the signal processing unit is based on L1、L2Calculating the loosening angle of the bolt
n°＝(180*L1)/(π*r1)-(180*L2)/(π*r2) Wherein r is1Is the inner radius of the first cylindrical stationary housing; r is2The inner radius of the second cylindrical stationary housing.
Example two
The embodiment provides a wind turbine tower bolt looseness monitoring system, as shown in fig. 4 to 6, which includes a wind turbine tower bolt looseness monitoring device 100, a flange 200, bolts 300, a data processing device 400, and a fan main control system 500.
The wind turbine tower bolt looseness monitoring device 100 is arranged on the bolts 300, and it should be noted here that the number and the positions of the wind turbine tower bolt looseness monitoring devices 100 may be arranged according to the number and the actual positions of the bolts 300, which is not limited herein. The wind turbine tower bolt looseness monitoring device 100 is connected with the data processing device 400, bolts 300 needing to be monitored of each platform are divided into a group due to the fact that the number of the wind turbine tower bolts is large, and the wind turbine tower bolt looseness monitoring device 100 of each group is connected to the data processing device 400.
The data processing device 400 is also used for connecting with the fan master control system 500. The fan main control system 500 numbers the bolts 300 to be monitored on each layer of the flange 200, numbers each tower, the data processing device 400 transmits the data monitored by the wind turbine tower bolt looseness monitoring device 100 to the fan main control system 500, the fan main control system 500 judges the state of the monitored bolts 300 through the change of the looseness angle of the bolts 300, and sends out an alarm signal when the bolts 300 are loosened.
According to the wind turbine generator system tower cylinder bolt looseness monitoring system provided by the embodiment, the wind turbine generator system tower cylinder bolt looseness monitoring device 100 is arranged at the key positions such as the joint between the flange plates of the tower cylinder, and if bolts at the key positions are loosened, the output signal of the wind turbine generator system tower cylinder bolt looseness monitoring device 100 is changed. The data processing device 400 collects the change data to realize online real-time monitoring of the loosening condition of the connecting bolt, and the loosening condition of the connecting bolt 300 can be detected in the first time, so that normal operation of the wind turbine generator is guaranteed, and the occurrence probability of safety accidents is reduced.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described embodiments may be performed by hardware associated with program instructions.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a wind turbine generator system tower section of thick bamboo bolt looseness monitoring devices which characterized in that: the device comprises a first external member, a second external member and a signal processing unit,
the first sleeve comprises a first cylindrical rotating shell and a first cylindrical fixing shell which is nested on the outer side of the first cylindrical rotating shell, a cavity with a corresponding specification is prefabricated in the first cylindrical rotating shell according to a nut of a fan tower bolt, when the nut is loosened, the first cylindrical rotating shell can rotate along with the nut, a first carbon film is inlaid in the inner wall of the first cylindrical fixing shell, a plurality of first conductive metal positioning top beads are mounted on the outer wall of the first cylindrical rotating shell, annular positioning holes matched with the first conductive metal positioning top beads are formed in the inner wall of the first cylindrical fixing shell, and one of the first conductive metal positioning top beads is connected with a lead as a first contact point of an electric signal; the first carbon film resistor disc and the first conductive metal positioning top bead are connected with a signal processing unit capable of calculating the loosening angle of the nut according to the change of the electric signal to form a conductive loop;
the second sleeve member comprises a second cylindrical rotating shell and a second cylindrical fixed shell which is nested at the outer side of the second cylindrical rotating shell, a cavity with corresponding specification is prefabricated in the second cylindrical rotating shell according to a screw cap of a fan tower bolt, when the screw cap is loosened, the second cylindrical rotating shell can rotate along with the screw cap, a second carbon film resistor disc is embedded in the inner wall of the second cylindrical fixed shell, a plurality of second conductive metal positioning top beads are arranged on the outer wall of the second cylindrical rotating shell, an annular positioning hole matched with the second conductive metal positioning top beads is arranged on the inner wall of the second cylindrical fixing shell, one of the second conductive metal positioning top beads is connected with a lead as a second contact point of an electric signal, the second carbon film resistor disc, the second conductive metal positioning top bead and the signal processing unit are connected to form a conductive loop.
2. The wind turbine tower bolt looseness monitoring device of claim 1, wherein: the first cylindrical fixed shell and the second cylindrical fixed shell are adsorbed on a flange of the fan through permanent magnets.
3. The wind turbine tower bolt looseness monitoring device of claim 1, wherein: a movable gap is reserved between the inner wall of the first cylindrical fixed shell and the outer wall of the first cylindrical rotating shell, and a movable gap is reserved between the inner wall of the second cylindrical fixed shell and the outer wall of the second cylindrical rotating shell.
4. The wind turbine tower bolt looseness monitoring device of claim 1, wherein: the first cylindrical rotating shell, the first cylindrical fixed shell, the second cylindrical rotating shell and the second cylindrical fixed shell are all made of insulating materials.
5. A monitoring system comprising the wind turbine tower bolt loosening monitoring device as set forth in any one of claims 1-4, characterized in that: the system further comprises a flange, a bolt, a data processing device and a fan main control system, wherein the wind turbine generator tower bolt looseness monitoring device is arranged on the bolt, and the data processing device is connected with the wind turbine generator tower bolt looseness monitoring device and the fan main control system.
6. The monitoring system of claim 5, wherein: the number and the positions of the wind turbine tower bolt looseness monitoring devices are determined according to the number and the positions of the bolts.
7. The monitoring system of claim 5, wherein: the bolts are located on the same platform of the wind turbine tower and are in a group, and the wind turbine tower bolt looseness monitoring device of each group is connected to the data processing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922230292.9U CN211549902U (en) | 2019-12-13 | 2019-12-13 | Wind turbine generator system tower section of thick bamboo bolt looseness monitoring devices and system |
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| CN201922230292.9U CN211549902U (en) | 2019-12-13 | 2019-12-13 | Wind turbine generator system tower section of thick bamboo bolt looseness monitoring devices and system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362327A (en) * | 2020-11-12 | 2021-02-12 | 重庆大学 | Application method of intelligent threaded fastener |
| CN112432779A (en) * | 2020-11-25 | 2021-03-02 | 罗洋 | Bolt looseness intelligent detection device |
| CN112983749A (en) * | 2019-12-13 | 2021-06-18 | 赤峰华源新力科技有限公司 | Wind turbine generator tower bolt looseness monitoring device, system and monitoring method |
| CN113339203A (en) * | 2021-04-16 | 2021-09-03 | 大唐新疆清洁能源有限公司 | Alarm system for looseness of bolts of wind turbine tower |
| CN115247629A (en) * | 2021-12-17 | 2022-10-28 | 山东建筑大学 | A positioning device and method for welding studs to reinforce monitoring points in wind power towers |
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2019
- 2019-12-13 CN CN201922230292.9U patent/CN211549902U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983749A (en) * | 2019-12-13 | 2021-06-18 | 赤峰华源新力科技有限公司 | Wind turbine generator tower bolt looseness monitoring device, system and monitoring method |
| CN112983749B (en) * | 2019-12-13 | 2024-07-30 | 赤峰华源新力科技有限公司 | Wind turbine generator tower bolt loosening monitoring device, system and monitoring method |
| CN112362327A (en) * | 2020-11-12 | 2021-02-12 | 重庆大学 | Application method of intelligent threaded fastener |
| CN112362327B (en) * | 2020-11-12 | 2023-02-03 | 重庆大学 | Application method of intelligent threaded fastener |
| CN112432779A (en) * | 2020-11-25 | 2021-03-02 | 罗洋 | Bolt looseness intelligent detection device |
| CN113339203A (en) * | 2021-04-16 | 2021-09-03 | 大唐新疆清洁能源有限公司 | Alarm system for looseness of bolts of wind turbine tower |
| CN115247629A (en) * | 2021-12-17 | 2022-10-28 | 山东建筑大学 | A positioning device and method for welding studs to reinforce monitoring points in wind power towers |
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