CN111780910A - Wind turbine bolt fastener pressure detection device and abnormality detection method - Google Patents
Wind turbine bolt fastener pressure detection device and abnormality detection method Download PDFInfo
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- CN111780910A CN111780910A CN202010599727.1A CN202010599727A CN111780910A CN 111780910 A CN111780910 A CN 111780910A CN 202010599727 A CN202010599727 A CN 202010599727A CN 111780910 A CN111780910 A CN 111780910A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The invention discloses a pressure detection device for a bolt fastener of a wind turbine, which comprises a fixed frame, a shell, a screw rod and a sleeve, wherein the screw rod is rotatably arranged on the inner wall of the shell, and both ends of the outer surface of the shell are provided with guide grooves, the side end surface of the shell is welded with a connecting rod, a handle is fixed at one end of the connecting rod departing from the shell, a connecting frame and a limiting rod are welded on the inner wall of the fixing frame, a fixing block is welded at one end of the limiting rod departing from the fixing frame, the fixed block is rotatably arranged on the screw rod, one end of the connecting frame, which is far away from the fixed frame, is fixedly provided with a sleeve, the inner wall of the sleeve is provided with a pressure sensor, the size of the pressure sensor is matched with the inner diameter of the sleeve, a groove is arranged in the sleeve, and the bolt body is fixed in the groove in a limiting manner, and a display screen is mounted on the outer surface of the shell in a fitting manner. The invention has the advantages of convenient operation, convenient and quick later maintenance and better practicability.
Description
Technical Field
The invention relates to the technical field of bolt fastener pressure detection, in particular to a bolt fastener pressure detection device and an abnormality detection method of a wind turbine.
Background
The bolt fastener pressure detection device of the wind turbine refers to: a wind turbine is a turbine powered by wind energy. Certain aerospace research agencies in wilbraham, massachusetts, usa have developed wind turbines that generate electricity at a cost that is only half that of conventional turbines. The new design of wind turbines produces electricity comparable to conventional wind turbines, but with blades of only half the diameter of the latter. The smaller blade size and other factors allow the new turbines to be more densely packed than conventional turbines, increasing the electricity production per acre of land.
But current bolt all adopts personnel manual to screw up, screws up the back and can't adjust according to actual demand's elasticity degree, causes the practicality not good, influences the later stage and operates.
Disclosure of Invention
The invention aims to provide a pressure detection device for a bolt fastener of a wind turbine, which is convenient to operate, convenient and quick to maintain in a later period and better in practicability.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a wind turbine's bolt fastener pressure measurement, includes mount, shell, lead screw and sleeve pipe, the lead screw is installed in the inner wall rotation of shell, and the surface both ends of shell have all seted up the guide way, the inner wall welding of mount has link and gag lever post, the one end fixed mounting that the link deviates from the mount has the sleeve pipe, the surface laminating of shell installs the display screen.
In the scheme, the shell is arranged, when an operator needs to adjust the bolt body and detect the pressure, the operator slidingly sleeves the bolt body in the sleeve, the bolt body is in contact with and limited by the pressure sensor in the sleeve after the sleeve is sleeved, the operator rotates the handle to drive the shell to rotate after the contact, the shell drives the sleeve to rotate when rotating, the pressure sensor detects the pressure and tightening condition of the bolt body when the sleeve rotates, the data is detected through the display screen, the operator can adjust according to the depth of the bolt body in the wind turbine when detecting, only the power device needs to be opened to drive the screw rod to rotate when adjusting, the limiting rod on the fixing frame slides to the guide groove to limit when the screw rod rotates, the fixing block on the limiting rod is rotatably arranged on the screw rod, and the fixing frame is driven to move back and forth when the screw rod rotates, the sleeve pipe can conveniently enter the wind turbine, so that the practicability is better, and the operation is more convenient and faster.
In a possible implementation scheme, a connecting rod is welded on the side end face of the shell, and a handle is fixed at one end of the connecting rod, which faces away from the shell.
In the above scheme, the handle is connected and arranged through the connecting rod, so that a user can conveniently grip the handle during operation, and the convenience of operation is improved.
In a possible embodiment, the limiting rod is sleeved in the guide groove in a sliding manner, and the size of the guide groove is matched with that of the limiting rod.
In the above scheme, the direction that makes the lead screw accurate prolong the guide way moves, and the accuracy is higher during the use, also prevents that the lead screw skew from easily causing damage such as buckling, increases life.
In a possible implementation scheme, a fixing block is welded at one end, away from the fixing frame, of the limiting rod, and the fixing block is rotatably installed on the screw rod.
In the scheme, the pressure of the pressure device can be judged through the position of the fixing block, and the pressure device is more accurate in use.
In a possible embodiment, the inner wall of the casing is provided with a pressure sensor, and the size of the pressure sensor is matched with the size of the inner diameter of the casing.
In the scheme, the pressure sensor is arranged in the sleeve to protect the pressure sensor, so that the service life is prolonged.
In a possible embodiment, a groove is formed in the sleeve, and a bolt body is fixed in the groove in a limiting manner.
In the scheme, the structure is more stable.
Compared with the prior art, the invention has the following beneficial effects:
the invention is provided with the shell, when an operator needs to adjust the bolt body and detect the pressure, the operator slidingly sleeves the bolt body in the sleeve, the sleeved bolt body is contacted and limited with the pressure sensor in the sleeve, the operator rotates the handle to drive the shell to rotate after the contact, the sleeve is driven to rotate when the shell rotates, the pressure sensor detects the pressure and tightening condition of the bolt body when the sleeve rotates, and detects the data through the display screen, the operator can adjust according to the depth of the bolt body in the wind turbine when detecting, only the power device needs to be opened to drive the screw rod to rotate when adjusting, the limiting rod on the fixing frame slides to the guide groove to limit when the screw rod rotates, the fixing block on the limiting rod is rotatably arranged on the screw rod, and the screw rod drives the fixing frame to move back and forth when rotating, the sleeve pipe can conveniently enter the wind turbine, so that the practicability is better, and the operation is more convenient and faster.
Drawings
FIG. 1 is a schematic diagram of the internal structure of the present invention in a front view;
FIG. 2 is a schematic view of the external appearance structure of the present invention;
FIG. 3 is a schematic bottom view of the present invention;
FIG. 4 is a side view of the sleeve of the present invention;
FIG. 5 is a flow chart illustrating a method for determining whether an instrument is damaged according to the present invention.
In the figure: 1. a connecting frame; 2. a fixed mount; 3. a housing; 4. a screw rod; 5. a limiting rod; 6. a connecting rod; 7. a grip; 8. a sleeve; 9. a bolt body; 10. a display screen; 11. a guide groove; 12. a pressure sensor; 13. a groove; 14. and (5) fixing blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1 to 4, an embodiment of the present invention is shown: the utility model provides a wind turbine's bolt fastener pressure measurement, includes mount 2, shell 3, lead screw 4 and sleeve pipe 8, the inner wall of shell 3 rotates installs lead screw 4, and the surface both ends of shell 3 have all seted up guide way 11, the inner wall welding of mount 2 has link 1 and gag lever post 5, the one end fixed mounting that link 1 deviates from mount 2 has sleeve pipe 8, the surface laminating of shell 3 installs display screen 10. The screw rod 4 needs to provide a power device to enable the screw rod to work normally, and as is well known to those skilled in the art, the provision of the power is common and belongs to conventional means or common knowledge, and is not described herein again, and those skilled in the art can make any choice according to their needs or convenience. The power device drives the screw rod 4 to rotate.
In the embodiment, by arranging the shell 3, when an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 is in contact with and limited by the pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the shell 3 to rotate after the contact, the shell 3 drives the sleeve 8 to rotate, the pressure sensor 12 detects the pressure and tightening condition of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust according to the depth of the bolt body 9 in the wind turbine during detection, only the power device needs to be turned on to drive the screw rod 4 to rotate during adjustment, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine, the practicability is better, and the operation is more convenient.
In a possible embodiment, a connecting rod 6 is welded to the side end face of the housing 3, and a handle 7 is fixed to the end of the connecting rod 6 facing away from the housing 3. The handle 7 is connected and arranged through the connecting rod 6, so that a user can conveniently grip the handle during operation, and convenience in operation is improved.
In a possible embodiment, the limiting rod 5 is slidably sleeved in the guide groove 11, and the size of the guide groove 11 is matched with that of the limiting rod 5. The accurate direction that prolongs guide way 11 of lead screw 4 moves, and the accuracy is higher during the use, also prevents that the skew of lead screw 4 from easily causing damage such as buckling, increases life.
In a possible embodiment, a fixing block 14 is welded at one end of the limiting rod 5, which is far away from the fixing frame 2, and the fixing block 14 is rotatably installed on the screw rod 4. The pressure of the pressure device can be judged through the position of the fixed block 14, and the pressure device is more accurate in use.
In a possible embodiment, the pressure sensor 12 is mounted on the inner wall of the casing 8, and the size of the pressure sensor 12 is adapted to the size of the inner diameter of the casing 8. The pressure sensor 12 is arranged in the sleeve 8 to protect the pressure sensor 12, so that the service life is prolonged. As is well known to those skilled in the art, the pressure sensor 12 is provided with common knowledge, which belongs to conventional means or common general knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience.
In a possible embodiment, a groove 13 is formed in the sleeve 8, and the bolt body 9 is fixed in the groove 13 in a limiting manner. The structure is more stable.
By arranging the shell 3, when an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 is in contact with and limited by the pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the shell 3 to rotate after the contact, the shell 3 drives the sleeve 8 to rotate, the pressure sensor 12 detects the pressure and tightening condition of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust according to the depth of the bolt body 9 in the wind turbine during detection, only the power device needs to be turned on to drive the screw rod 4 to rotate during adjustment, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine, the practicability is better, and the operation is more convenient.
When an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 is in contact with and limited by a pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the shell 3 to rotate after the contact, the shell 3 drives the sleeve 8 to rotate when rotating, the pressure sensor 12 detects the pressure and tightening condition of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust according to the depth of the bolt body 9 in the wind turbine when detecting, only a power device needs to be opened to drive the screw rod 4 to rotate when adjusting, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine.
In the embodiment, by arranging the shell 3, when an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 is in contact with and limited by the pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the shell 3 to rotate after the contact, the shell 3 drives the sleeve 8 to rotate, the pressure sensor 12 detects the pressure and tightening condition of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust according to the depth of the bolt body 9 in the wind turbine during detection, only the power device needs to be turned on to drive the screw rod 4 to rotate during adjustment, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine, the practicability is better, and the operation is more convenient.
Example two
In this embodiment, a wind turbine's bolt fastener pressure measurement device has been constructed, including mount 2, shell 3, lead screw 4 and sleeve pipe 8, the inner wall of shell 3 rotates installs lead screw 4, and the surface both ends of shell 3 have all seted up guide way 11, the inner wall welding of mount 2 has link 1 and gag lever post 5, the one end fixed mounting that link 1 deviates from mount 2 has sleeve pipe 8, the surface laminating of shell 3 installs display screen 10. The screw rod 4 needs to provide a power device to enable the screw rod to work normally, and as is well known to those skilled in the art, the provision of the power is common and belongs to conventional means or common knowledge, and is not described herein again, and those skilled in the art can make any choice according to their needs or convenience. The power device drives the screw rod 4 to rotate.
In the embodiment, by arranging the shell 3, when an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 is in contact with and limited by the pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the shell 3 to rotate after the contact, the shell 3 drives the sleeve 8 to rotate, the pressure sensor 12 detects the pressure and tightening condition of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust according to the depth of the bolt body 9 in the wind turbine during detection, only the power device needs to be turned on to drive the screw rod 4 to rotate during adjustment, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine, the practicability is better, and the operation is more convenient.
In a possible embodiment, a connecting rod 6 is welded to the side end face of the housing 3, and a handle 7 is fixed to the end of the connecting rod 6 facing away from the housing 3. The handle 7 is connected and arranged through the connecting rod 6, so that a user can conveniently grip the handle during operation, and convenience in operation is improved.
In a possible embodiment, the limiting rod 5 is slidably sleeved in the guide groove 11, and the size of the guide groove 11 is matched with that of the limiting rod 5. The accurate direction that prolongs guide way 11 of lead screw 4 moves, and the accuracy is higher during the use, also prevents that the skew of lead screw 4 from easily causing damage such as buckling, increases life.
In a possible embodiment, a fixing block 14 is welded at one end of the limiting rod 5, which is far away from the fixing frame 2, and the fixing block 14 is rotatably installed on the screw rod 4. The pressure of the pressure device can be judged through the position of the fixed block 14, and the pressure device is more accurate in use.
In a possible embodiment, the pressure sensor 12 is mounted on the inner wall of the casing 8, and the size of the pressure sensor 12 is adapted to the size of the inner diameter of the casing 8. The pressure sensor 12 is arranged in the sleeve 8 to protect the pressure sensor 12, so that the service life is prolonged. As is well known to those skilled in the art, the pressure sensor 12 is provided with common knowledge, which belongs to conventional means or common general knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience.
In a possible embodiment, a groove 13 is formed in the sleeve 8, and the bolt body 9 is fixed in the groove 13 in a limiting manner. The structure is more stable.
By arranging the shell 3, when an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 is in contact with and limited by the pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the shell 3 to rotate after the contact, the shell 3 drives the sleeve 8 to rotate, the pressure sensor 12 detects the pressure and tightening condition of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust according to the depth of the bolt body 9 in the wind turbine during detection, only the power device needs to be turned on to drive the screw rod 4 to rotate during adjustment, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine, the practicability is better, and the operation is more convenient.
When an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 is in contact with and limited by a pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the shell 3 to rotate after the contact, the shell 3 drives the sleeve 8 to rotate when rotating, the pressure sensor 12 detects the pressure and tightening condition of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust according to the depth of the bolt body 9 in the wind turbine when detecting, only a power device needs to be opened to drive the screw rod 4 to rotate when adjusting, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine.
In the embodiment, by arranging the housing 3, when an operator needs to adjust the bolt body 9 and detect pressure, the operator slidingly sleeves the bolt body 9 in the sleeve 8, the sleeved bolt body 9 contacts and limits the pressure sensor 12 in the sleeve 8, the operator rotates the handle 7 to drive the housing 3 to rotate after the contact, the housing 3 drives the sleeve 8 to rotate, the pressure sensor 12 detects the pressure and tightening conditions of the bolt body 9 when the sleeve 8 rotates, and detects data through the display screen 10, the operator can adjust the depth of the bolt body 9 in the wind turbine during detection according to the depth of the bolt body 9 in the wind turbine, only the power device needs to be turned on to drive the screw rod 4 to rotate during adjustment, the limiting rod 5 on the fixing frame 2 slides to the guide groove 11 to limit when the screw rod 4 rotates, and the fixing block 14 on the limiting rod 5 is rotatably installed on the screw rod 4, the lead screw 4 drives the fixing frame 2 to move back and forth when rotating, so that the sleeve 8 can conveniently enter the wind turbine, the practicability is better, and the operation is more convenient.
In addition, the embodiment also constructs a system for judging the abnormality of the instrument, which comprises a pressure sensor 12, a data analysis module, a concentrator, a converter and a display screen 10.
The pressure sensors 12 collect the multiple sensing points in the module using silicone internal pressure sensitive ceramic chips, fasteners clamp the bolted connections of the wind turbine, acquire one or more pressure value signals from one or more load monitoring sensors, and each load monitoring sensor outputs a pressure value signal as the fastener tension changes, and then transmits the one or more pressure value signals to a signal collection hub.
The hub converts the received one or more pressure value signals into data packets and sends the data packets to the converter.
The converter converts one or more pressure value signals in the data packet into mechanical data values, and then transmits the converted mechanical data values to the data analysis module.
The data receiving end receives the electric signal converted by the pressure value, stores and compares the data information, compares the mechanical data value with a preset mechanical limit value, if the value of the mechanical data value is equal to or less than the preset mechanical limit value, the indication is the notification that the fastener should be maintained, trains and predicts by adopting a linear regression model calculation method, and sends the training and predicting result to the display screen 10 for displaying.
The data analysis module receives the electric signal converted by the pressure value, linear regression model algorithm training relating to the machine learning model in the field of artificial intelligence is carried out, all previous semi-artificial subjective analysis factors are deleted, and whether the instrument is damaged or not is judged by transmitting the data to the model training. When the force borne by the instrument is larger and larger or abnormal fluctuation exists, the model can dig out fine information in real-time input data so as to predict the lead amount, and when the abnormality occurs, the model can give prediction.
The embodiment further provides a system for judging the abnormality of the instrument based on the calculation of the linear regression model on the basis of the structure of the embodiment, the linear regression model algorithm training of the machine learning model in the field of artificial intelligence is carried out on the electric signal measured by pressure, all the previous semi-artificial subjective analysis factors are deleted, and the data are transmitted to the model training to judge whether the instrument is damaged or not, so that the whole process is completed by the model, the system is more rigorous and avoids the subjective factors. When the force borne by the instrument is larger and larger or abnormal fluctuation exists, the model can dig out fine information in real-time input data so as to predict the lead, and when the abnormality occurs, the model can give prediction.
EXAMPLE III
In this embodiment, a system for determining an instrument abnormality based on linear regression model calculation is constructed, and the implementation manners of the mechanical structure and data acquisition and data analysis are as described in the first and second embodiments, which are not repeated herein;
in this example, a system for determining abnormality of an instrument employed in the present embodiment will be further described.
Referring to fig. 5, in this embodiment, on the basis of the first embodiment and the second embodiment, the collected pressure values are further analyzed, and based on the analysis result, the purpose of timely determining whether the instrument is abnormal is achieved, so as to protect the pressure detection device.
The process is as follows:
at step 102, the pressure sensors 12 collect a plurality of sensing points in the module using silicone internal pressure sensitive ceramic chips, fasteners clamp the wind turbine bolts, acquire one or more pressure value signals from one or more load monitoring sensors, and each load monitoring sensor outputs a pressure value signal as the fastener tension changes, and transmits the one or more pressure value signals to a signal collection hub.
The hub converts the received one or more pressure value signals into data packets and sends the data packets to the converter.
The converter converts one or more pressure value signals in the data packet into mechanical data values, and then transmits the converted mechanical data values to the data analysis module.
And 104, receiving the electric signal converted by the pressure value by the data receiving end, storing and comparing the data information, comparing the mechanical data value with a preset mechanical limit value, indicating that the fastener is required to be maintained if the value of the mechanical data value is equal to or less than the preset mechanical limit value, and calculating by adopting a linear regression model calculation method to obtain a calculation result.
And step 106, predicting whether the instrument is damaged or not according to the calculation result, and sending the training and prediction result to the display screen 10 for displaying.
In the third embodiment, the linear regression model calculation method in step 104 specifically includes:
linear regression is one of the regression problems, linear regression assuming a linear correlation between target values and features, i.e., satisfying a multivariate linear equation. The parameters w and b when the loss function is minimum are solved by constructing the loss function. By length we can express the following formula:
Y^＝wx+b
y is the predicted value, the independent variable x and the dependent variable y are known, and what we want to realize is to predict what the new x is, and what y corresponds to it. Therefore, to construct this functional relationship, the goal is to solve both w and b parameters in the linear model by knowing the data points.
Solving the optimal parameters requires a standard to measure the result, and for this reason, an objective function equation needs to be quantified, so that the computer can continuously optimize in the solving process.
For any model solving problem, a group of predicted values y ^ can be obtained finally, the number of data lines is n by comparing the existing true values y, and the loss function can be defined as follows:
i.e., the average squared distance between the predicted value and the true value, which is commonly referred to in statistics as MAE mean square error. The previous function is substituted into the loss function and the parameters w and b to be solved are considered as arguments of the function L.
The nature of linear regression is to fit the optimal parameters w and b to the training data, and the criterion for the optimal case is the minimization of the loss function L. In this project, after training the data obtained by the sensor of the gasket and fitting the data to obtain parameters such as w, b and the like, the model learns to judge and predict what force will cause the instrument to be damaged, and what fluctuating force may cause larger fluctuation to cause the instrument to be damaged. Systems and methods for monitoring and predicting fastener tension are then achieved.
The embodiment carries out a linear regression model algorithm training that relates to artificial intelligence field machine learning model to the signal of telecommunication that pressure was surveyed, deletes the subjective analysis factor that has semi-artifically before all, through training the model with data transfer, judges then whether the instrument damages, and whole journey is all done by the model, and is more rigorous, avoids subjective factor. When the force borne by the instrument is larger and larger or abnormal fluctuation exists, the model can dig out fine information in real-time input data so as to predict the lead, and when the abnormality occurs, the model can give prediction.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A bolt fastener pressure detection device of a wind turbine, comprising a fixing frame (2), a housing (3), a screw rod (4) and a sleeve (8), characterized in that: the inner wall of shell (3) rotates and installs lead screw (4), and guide way (11) have all been seted up at the surface both ends of shell (3), the inner wall welding of mount (2) has link (1) and gag lever post (5), the one end fixed mounting that link (1) deviates from mount (2) has sleeve pipe (8), display screen (10) are installed in the surface laminating of shell (3).
2. The bolt fastener pressure detection apparatus of a wind turbine according to claim 1, wherein: a connecting rod (6) is welded on the side end face of the shell (3), and a handle (7) is fixed at one end of the connecting rod (6) departing from the shell (3).
3. The bolt fastener pressure detection apparatus of a wind turbine according to claim 1, wherein: the limiting rod (5) is sleeved in the guide groove (11) in a sliding mode, and the size of the guide groove (11) is matched with that of the limiting rod (5).
4. The bolt fastener pressure detection apparatus of a wind turbine according to claim 1, wherein: one end of the limiting rod (5) deviating from the fixing frame (2) is welded with a fixing block (14), and the fixing block (14) is rotatably installed on the screw rod (4).
5. The bolt fastener pressure detection apparatus of a wind turbine according to claim 1, wherein: and a pressure sensor (12) is arranged on the inner wall of the sleeve (8), and the size of the pressure sensor (12) is matched with the inner diameter of the sleeve (8).
6. The bolt fastener pressure detection apparatus of a wind turbine according to claim 1, wherein: a groove (13) is formed in the sleeve (8), and a bolt body (9) is fixed in the groove (13) in a limiting mode.
7. A method of detecting abnormality of a bolt fastener of a wind turbine, applied to a bolt fastener pressure detecting apparatus of a wind turbine according to any one of claims 1 to 6, characterized by the steps of the detecting method:
102, acquiring one or more pressure value signals by one or more load monitoring sensors in a pressure sensor collection module, and transmitting the converted mechanical data values to a data analysis module;
104, the data receiving end receives the electric signal converted by the pressure value, stores and compares the data information, compares the mechanical data value with a preset mechanical limit value, indicates that the fastener is required to be maintained if the value of the mechanical data value is equal to or less than the preset mechanical limit value, and calculates by adopting a linear regression model calculation method to obtain a calculation result;
and step 106, predicting whether the instrument is damaged or not according to the calculation result, and sending the training and prediction result to a display screen for displaying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010599727.1A CN111780910A (en) | 2020-06-28 | 2020-06-28 | Wind turbine bolt fastener pressure detection device and abnormality detection method |
Applications Claiming Priority (1)
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