CN220018466U - Handheld stress intelligent detection device - Google Patents
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- CN220018466U CN220018466U CN202320168108.6U CN202320168108U CN220018466U CN 220018466 U CN220018466 U CN 220018466U CN 202320168108 U CN202320168108 U CN 202320168108U CN 220018466 U CN220018466 U CN 220018466U
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- 239000013307 optical fiber Substances 0.000 claims description 14
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- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 abstract description 37
- 238000000034 method Methods 0.000 description 27
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- 238000010586 diagram Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
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- 229910052742 iron Inorganic materials 0.000 description 2
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- 238000010295 mobile communication Methods 0.000 description 2
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a handheld intelligent stress detection device, which comprises: the elastic structure is in an omega shape, a strain gauge sensor is arranged on the outer surface of the elastic structure, and a fiber bragg grating sensor is arranged on the inner surface of the elastic structure; further comprises: the strain gauge sensor and the fiber bragg grating sensor are connected with the circuit board, and the circuit board is provided with a man-machine interaction module for displaying detection data of the strain gauge sensor and the fiber bragg grating sensor and controlling the circuit board. The detection device not only can improve the accuracy of the stress data monitoring result of the wind turbine, but also can reduce the cost input when the wind turbine is subjected to stress monitoring. Meanwhile, the user experience of people in monitoring the stress data of the wind turbine generator can be improved.
Description
Technical Field
The utility model relates to the technical field of equipment vibration detection, in particular to a handheld intelligent detection device.
Background
Because the operation condition of a large-scale wind turbine generator is complex, the temperature, the humidity and the bearing load of the wind turbine generator in the operation process are changed greatly, and therefore, in order to ensure the stable and reliable operation of the wind turbine generator, the vibration condition of the wind turbine generator is usually required to be monitored.
In the prior art, an acceleration sensor or a speed sensor is additionally arranged on a wind turbine to monitor the stress change condition of the wind turbine when vibration occurs, however, the monitoring results of the acceleration sensor and the speed sensor are easily interfered by electromagnetic signals in the wind turbine, and thus the problem of lower detection precision of the stress detection results of the existing wind turbine is caused. Meanwhile, as the vibration frequency of the wind turbine is low and the price of the low-frequency sensor is high, the stress detection cost of the wind turbine is too high due to the stress monitoring method of the existing wind turbine. Moreover, when people use the acceleration sensor or the speed sensor to monitor the stress change of the wind turbine generator, the stress change data collected by the acceleration sensor or the speed sensor cannot be observed and analyzed in real time, so that the user experience of people when monitoring the stress data of the wind turbine generator is greatly reduced. There is no effective solution to this technical problem.
Disclosure of Invention
Therefore, the utility model aims to provide the handheld intelligent stress detection device, so that the accuracy of the stress data monitoring result of the wind turbine can be improved, the cost input during the stress monitoring of the wind turbine can be reduced, and the user experience of people during the stress data monitoring of the wind turbine can be improved. The specific scheme is as follows:
a handheld stress intelligent detection device, comprising: the elastic structure is in an omega shape, a strain gauge sensor is arranged on the outer surface of the elastic structure, and a fiber bragg grating sensor is arranged on the inner surface of the elastic structure; further comprises: the strain gauge sensor and the fiber bragg grating sensor are connected with the circuit board, and the circuit board is provided with a man-machine interaction module for displaying detection data of the strain gauge sensor and the fiber bragg grating sensor and controlling the circuit board.
Preferably, the inner surface of the elastic structure is provided with a groove, the fiber bragg grating sensor is arranged in the groove, an optical fiber is connected to the fiber bragg grating sensor, the fiber bragg grating sensor and the optical fiber are adhered in the groove through an adhesive, and the free end of the optical fiber is exposed to the port part of the elastic structure.
Preferably, both port parts of the elastic structure are provided with detachable connecting pieces for connecting the tested equipment.
Preferably, the connecting piece is a U-shaped magnet.
Preferably, the man-machine interaction module includes:
the data acquisition device is used for acquiring detection data of the strain gauge sensor and the fiber bragg grating sensor;
the programmable logic controller is connected with the data acquisition device and used for analyzing the detection data of the strain gauge sensor and the fiber bragg grating sensor;
the touch display screen is connected with the programmable logic controller and used for displaying detection data of the strain gauge sensor and the fiber bragg grating sensor and controlling the circuit board;
and the wireless communication module is connected with the memory and used for transmitting detection data of the strain sensor and the fiber bragg grating sensor to a remote server.
Preferably, the method further comprises:
and the power supply module is connected with the data acquisition unit, the programmable logic controller, the touch display screen and the wireless communication module and is used for supplying power to the data acquisition unit, the programmable logic controller, the touch display screen and the wireless communication module.
Preferably, the wireless communication module is specifically a 5G communication module.
Preferably, the method further comprises:
and the memory is connected with the data acquisition device and used for storing detection data of the strain gauge sensor and the fiber bragg grating sensor.
Preferably, the memory is specifically a cloud memory.
Preferably, the outer surface of the elastic structure is provided with 4 strain gauge sensors; and a preset power supply voltage, a third strain gauge sensor and a fourth strain gauge sensor are added between the first strain gauge sensor and the second strain gauge sensor in the 4 strain gauge sensors, and the third strain gauge sensor and the fourth strain gauge sensor are used for outputting stress data of the tested equipment.
Therefore, in the intelligent detection device provided by the utility model, the elastic structure with the shape of omega is arranged, wherein the outer surface and the inner surface of the elastic structure are respectively provided with the strain gauge sensor and the fiber bragg grating sensor. When the device is used for monitoring the stress data of the wind turbine, the stress data generated by the wind turbine in the running process can be monitored in real time through the strain gauge sensor and the fiber bragg grating sensor on the omega-shaped elastic structure, and the strain gauge sensor and the fiber bragg grating sensor have electromagnetic interference resistance, so that the detection device is not interfered by electromagnetic signals in the process of monitoring the stress data of the wind turbine, and the accuracy of the stress monitoring result of the wind turbine can be remarkably improved. Meanwhile, compared with a low-frequency sensor, the strain gauge sensor and the fiber bragg grating sensor are low in manufacturing cost, so that cost investment required in the process of monitoring stress of the wind turbine generator can be greatly reduced. And in this detection device, still be provided with the casing that holds the circuit board, wherein, foil gage sensor and fiber bragg grating sensor all link to each other with the circuit board, are provided with the human-computer interaction module that is used for showing foil gage sensor and fiber bragg grating sensor's detection data on the circuit board to control the circuit board. The stress change condition of the wind turbine generator in the operation process can be displayed through the man-machine interaction module, so that workers can observe and analyze the stress change condition of the wind turbine generator conveniently, and the functional module arranged on the circuit board can be controlled through the man-machine interaction module, so that the user experience of people in monitoring the stress data of the wind turbine generator can be remarkably improved through the device. In summary, by the detection device, not only can the accuracy of the monitoring result of the stress data of the wind turbine be improved, but also the cost input during the stress monitoring of the wind turbine can be reduced. Meanwhile, the user experience of people in monitoring the stress data of the wind turbine generator can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a handheld stress intelligent detection device according to an embodiment of the present utility model;
FIG. 2 is a block diagram of an omega-type elastic structure according to an embodiment of the present utility model;
FIG. 3 is a block diagram of another omega-type elastic structure according to an embodiment of the present utility model;
fig. 4 is a schematic structural diagram of a man-machine interaction module according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of the present utility model when 4 strain gauge sensors are disposed on the outer surface of the elastic structure.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, fig. 1 is a schematic diagram of a handheld intelligent stress detection device according to an embodiment of the present utility model, where the device includes: an elastic structure 11 with an omega shape, wherein a strain gauge sensor 12 is arranged on the outer surface of the elastic structure 11, and a fiber grating sensor 13 is arranged on the inner surface of the elastic structure 11; further comprises: the strain gauge sensor 12 and the fiber bragg grating sensor 13 are connected with the circuit board 21, and the circuit board 21 is provided with a man-machine interaction module 22 for displaying detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13 and controlling the circuit board 21.
In this embodiment, a handheld stress intelligent detection device is provided, through which not only the accuracy of the monitoring result of the stress data of the wind turbine can be improved, but also the cost input during the stress monitoring of the wind turbine can be reduced. Meanwhile, the user experience of people in monitoring the stress data of the wind turbine generator can be improved.
Referring to fig. 2, fig. 2 is a block diagram of an Ω -shaped elastic structure according to an embodiment of the present utility model. The elastic structure comprises: an elastic structure 11 having an omega shape, a strain gauge sensor 12 provided on an outer surface of the elastic structure 11, and a fiber grating sensor 13 provided on an inner surface of the elastic structure 11.
Specifically, when the detection device is used for detecting the stress generated by the wind turbine during the operation process, the port parts at the two horizontal ends of the omega-shaped elastic structure 11 can be fixed on the wind turbine, for example: one port part of the omega-shaped elastic structure 11 is fixed on a connecting frame of a gear box and a cabin main engine in a cabin of the wind turbine, and the other port part of the omega-shaped elastic structure 11 is fixed on a connecting frame of a generator supporting position of the wind turbine and the cabin main engine. Then, when the wind turbine generator generates vibration during operation, the strain gauge sensor 12 and the fiber bragg grating sensor 13 arranged on the omega-shaped elastic structure 11 detect stress data generated by the wind turbine generator during operation.
It can be understood that, because the strain gauge sensor 12 and the fiber bragg grating sensor 13 both have anti-electromagnetic interference capability, when the device is used for monitoring the stress data generated by the wind turbine, the accuracy of the stress monitoring result of the wind turbine can be obviously improved. In addition, compared with the low-frequency sensor, the cost of the strain gauge sensor 12 and the fiber bragg grating sensor 13 is lower, so that the cost investment required in the process of monitoring the stress of the wind turbine generator can be reduced through the stress detection device provided by the embodiment.
In this detection device, the strain gauge sensor 12 and the fiber bragg grating sensor 13 are two independent stress detection channels. In practical applications, the stress data detected by the strain gauge sensor 12 may be transmitted through a cable, while the stress data detected by the fiber bragg grating sensor 13 may be transmitted through an optical fiber. In order to improve the accuracy of the fiber grating sensor 13 for acquiring stress data of the wind turbine generator, the value range of the measurement accuracy of the fiber grating sensor 13 may be set to 0.01% fs to 0.1% fs.
In addition, when the strain gauge sensor 12 and the fiber bragg grating sensor 13 are connected with the circuit board 21 in the shell, and the detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13 are displayed by the human-computer interaction module 22 on the circuit board 21, and the circuit board 21 is controlled, the stress change condition of the wind turbine generator set in the operation process can be displayed by the human-computer interaction module 22, and at the moment, a worker can check the stress change data detected when the strain gauge sensor 12 and the fiber bragg grating sensor 13 monitor the stress of the wind turbine generator set in real time by the human-computer interaction module 22, so that the worker can observe and analyze the stress change condition of the wind turbine generator set more conveniently. Moreover, the staff can control and adjust other functional modules arranged on the circuit board 21 through the man-machine interaction module 22, so that the user experience of the staff in the process of monitoring the stress of the wind turbine generator can be further improved.
Therefore, in the intelligent detection device provided in this embodiment, an elastic structure with an Ω shape is provided, where the outer surface and the inner surface of the elastic structure are respectively provided with a strain gauge sensor and a fiber bragg grating sensor. When the device is used for monitoring the stress data of the wind turbine, the stress data generated by the wind turbine in the running process can be monitored in real time through the strain gauge sensor and the fiber bragg grating sensor on the omega-shaped elastic structure, and the strain gauge sensor and the fiber bragg grating sensor have electromagnetic interference resistance, so that the detection device is not interfered by electromagnetic signals in the process of monitoring the stress data of the wind turbine, and the accuracy of the stress monitoring result of the wind turbine can be remarkably improved. Meanwhile, compared with a low-frequency sensor, the strain gauge sensor and the fiber bragg grating sensor are low in manufacturing cost, so that cost investment required in the process of monitoring stress of the wind turbine generator can be greatly reduced. And in this detection device, still be provided with the casing that holds the circuit board, wherein, foil gage sensor and fiber bragg grating sensor all link to each other with the circuit board, are provided with the human-computer interaction module that is used for showing foil gage sensor and fiber bragg grating sensor's detection data on the circuit board to control the circuit board. The stress change condition of the wind turbine generator in the operation process can be displayed through the man-machine interaction module, so that workers can observe and analyze the stress change condition of the wind turbine generator conveniently, and the functional module arranged on the circuit board can be controlled through the man-machine interaction module, so that the user experience of people in monitoring the stress data of the wind turbine generator can be remarkably improved through the device. In summary, by the detection device, not only can the accuracy of the monitoring result of the stress data of the wind turbine be improved, but also the cost input during the stress monitoring of the wind turbine can be reduced. Meanwhile, the user experience of people in monitoring the stress data of the wind turbine generator can be improved.
Based on the above embodiments, the technical solution is further described and optimized in this embodiment, please refer to fig. 3, and fig. 3 is a structural diagram of another Ω -shaped elastic structure provided in the embodiment of the present utility model. As a preferred embodiment, the inner surface of the elastic structure 11 is provided with a groove, the fiber grating sensor 13 is disposed in the groove, the fiber 14 is connected to the fiber grating sensor 13, the fiber grating sensor 13 and the fiber 14 are adhered in the groove by an adhesive, and the free end of the fiber 14 is exposed to the port portion of the elastic structure 11.
In this embodiment, in order to prevent the fiber bragg grating sensor 13 from falling off the inner surface of the elastic structure 11 during use of the detection device, a groove is further provided on the inner surface of the elastic structure 11, and the fiber bragg grating sensor 13 is disposed in the groove on the inner surface of the elastic structure 11. The fiber bragg grating sensor 13 is connected with an optical fiber 14 for transmitting stress data acquired by the fiber bragg grating sensor 13. The fiber grating sensor 13 and the optical fiber 14 are adhered to the groove of the inner surface of the elastic structure 11 by an adhesive, and the free end of the optical fiber 14 is exposed to the port portion of the elastic structure 11. It is conceivable that when the free end of the optical fiber 14 is exposed to the end portion of the elastic structure 11, a worker can acquire stress data acquired by the fiber grating sensor 13 through the optical fiber 14.
It should be noted that, in practical application, the grooves formed on the inner surface of the elastic structure 11 may be circular grooves, so as to facilitate production and manufacture of the elastic structure 11. And, the fiber grating sensor 13 and the optical fiber 14 may be adhered to the grooves of the inner surface of the elastic structure 11 by an adhesive substance.
Obviously, by the technical scheme provided by the embodiment, the stability and the reliability of the elastic structure in the use process can be further ensured.
Based on the above embodiments, the technical solution is further described and optimized in this embodiment, please refer to fig. 3, and fig. 3 is a structural diagram of another Ω -shaped elastic structure provided in the embodiment of the present utility model. As a preferred embodiment, both port portions of the elastic structure 11 are provided with a detachable connection 15 for connecting the device under test.
In this embodiment, in order to stably fix the detection device on the wind turbine generator system of the device under test, a detachable connection member 15 for connecting the device under test is further provided at each of the two ports of the elastic structure 11.
When the stress detection device needs to detect the stress generated by the wind turbine generator in the running process, the elastic structure 11 can be fixed on the tested equipment through the connecting pieces 15 arranged at the two port parts of the elastic structure 11, and the real-time monitoring of the stress data of the tested equipment is realized.
As a preferred embodiment, the connection 15 is embodied as a U-shaped magnet.
Specifically, the connection pieces 15 provided at the two ports of the elastic structure 11 may be U-shaped magnets, and because the main manufacturing material of the tested device wind turbine is iron and the magnets can attract the iron material, in practical application, the U-shaped magnets may be used to fix the elastic structure 11 on the tested device wind turbine.
Obviously, by the technical scheme provided by the embodiment, the detection device provided by the utility model can be fixed on the tested equipment, so that the stress data of the tested equipment can be monitored in real time.
Based on the above embodiments, the technical solution is further described and optimized in this embodiment, please refer to fig. 4, and fig. 4 is a schematic structural diagram of a man-machine interaction module provided in the embodiment of the present utility model. As a preferred embodiment, the man-machine interaction module 22 comprises:
a data collector 201 for collecting detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13;
the programmable logic controller 202 is connected with the data collector 201 and is used for analyzing the detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13;
the touch display screen 203 is connected with the programmable logic controller 202 and is used for displaying detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13 and controlling the circuit board;
and the wireless communication module 204 is connected with the data collector 201 and is used for transmitting detection data of the strain sensor 12 and the fiber bragg grating sensor 13 to the remote server 205.
In this embodiment, a data collector 201, a programmable logic controller 202, a touch display screen 203, and a wireless communication module 204 are disposed in the man-machine interaction module 22. The data collector 201 is used for collecting detection data detected when the strain gauge sensor 12 and the fiber bragg grating sensor 13 monitor stress of the wind turbine generator; the programmable logic controller 202 is used for analyzing the detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13; the touch display screen 203 is used for displaying detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13 and controlling the circuit board; the wireless communication module 204 is used for transmitting detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13 to the remote server 205.
Specifically, the data collector 201 may obtain the stress data detected by the strain gauge sensor 12 through a cable, and the data collector 201 may obtain the stress data detected by the fiber bragg grating sensor 13 through an optical fiber. It can be thought that when the detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13 are transmitted to the remote server 205 through the wireless communication module 204, a worker can log in the remote server 205 to better analyze and observe the detection data detected by the strain gauge sensor 12 and the fiber bragg grating sensor 13, so that the user experience of the worker in the process of observing the wind turbine generator can be further improved.
It should be noted that the programmable logic controller 202 is composed of a microcontroller of the model STM32L496 and a logic controller of the model EP4CE15F23C 8N. Also, the wireless communication module 204 may be provided as a 5G (5 th Generation Mobile Communication Technology, fifth-generation mobile communication technology) communication module to further increase the data transmission speed when transmitting the detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13 to the remote server 205.
As a preferred embodiment, the detection device further includes:
a memory 206 connected to the data collector 201 for storing the detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13;
and the power supply module 207 is connected with the data collector 201, the programmable logic controller 202, the touch display screen 203 and the wireless communication module 204 and is used for supplying power to the data collector 201, the programmable logic controller 202, the touch display screen 203 and the wireless communication module 204.
In the present embodiment, a memory 206 is also provided in the human-computer interaction module 22. The memory 206 is used for storing detection data of the strain gauge sensor 12 and the fiber bragg grating sensor 13, so that a worker can conveniently track and trace the detection data detected by the strain gauge sensor 12 and the fiber bragg grating sensor 13 in a subsequent process. Also, to further reduce the resource occupation amount of the storage space by the storage data, the memory 206 may be further set as a cloud memory.
In addition, in order to ensure the reliability and stability of each functional module in the man-machine interaction module in the operation process, a power supply module 207 for supplying power to the data collector 201, the programmable logic controller 202, the touch display screen 203 and the wireless communication module 204 may be further disposed on the circuit board. In practical application, in order to further improve the cruising ability of the power supply module 207, the power supply module 207 may be further configured as a lithium battery.
Therefore, through the technical scheme provided by the embodiment, the user experience of people when using the handheld stress intelligent detection device provided by the utility model can be further improved.
Based on the above embodiment, the technical solution is further described and optimized in this embodiment, and as a preferred embodiment, the outer surfaces of the elastic structure and the strain gauge sensor are further sleeved with an elastic pressing sheet with an omega shape, the elastic pressing sheet is adapted to the size of the elastic structure, and a dynamometer for applying pressure to the elastic structure is arranged on the elastic pressing sheet.
In practical application, when the strain gauge sensor and the fiber bragg grating sensor are used for measuring stress data generated by tested equipment, a stress coefficient of an elastic structure when deformation occurs is needed. The stress coefficient of the elastic structure is usually provided by the manufacturer. However, in the practical use process of the elastic structure, the stress coefficient of the elastic structure is often inconsistent with the numerical value provided by the manufacturer due to the influence of engineering environment. Therefore, in this embodiment, in order to further improve the accuracy of the detection device to the monitoring result of the stress data of the wind turbine generator, a stress calibration module for correcting the stress data detected by the detection device may be additionally disposed in the detection device.
Specifically, an elastic pressing sheet with an omega shape can be sleeved on the outer surfaces of the elastic structure and the strain gauge sensor, wherein the sizes of the elastic pressing sheet and the elastic structure are matched. And the elastic pressing sheet is also provided with a dynamometer for applying pressure to the elastic structure.
It can be understood that the stress coefficient of the elastic structure under the stress condition can be determined by applying the target pressure value with the fixed size to the dynamometer on the elastic pressing sheet, and at the moment, by collecting the stress data sensed by the strain gauge sensor and the fiber bragg grating sensor on the elastic structure, the corresponding mapping relation between the strain gauge sensor and the fiber bragg grating sensor and the deformation of the elastic structure under the target pressure value can be calculated, so that the stress condition of the elastic structure can be accurately calculated, and the stress data of the wind turbine generator system of the tested equipment can be accurately monitored through the strain gauge sensor and the fiber bragg grating sensor.
As a preferred embodiment, the elastic pressing piece is sleeved with the elastic structure through a bolt connecting piece.
In this embodiment, the elastic pressing piece and the elastic structure are sleeved together through the bolt connecting piece, that is, the elastic pressing piece and the elastic structure are sleeved together through the bolt and the nut. And, as long as the actual use of the elastic structure is not affected, the bolt connection member may be provided at any position of the elastic structure and the elastic pressing piece.
Specifically, two port parts of the elastic pressing sheet are fixedly connected with two port parts of the elastic structure through bolt connecting pieces respectively. In practice, two screw connections may be used to fix the two end portions of the elastic press piece and the elastic structure, respectively. It is conceivable that when two screw connections are used to fix the elastic press piece and the elastic structure, the socket structure of the elastic press piece and the elastic structure can be made more stable and stable.
Obviously, through the technical scheme provided by the embodiment, the stress coefficient of the elastic structure can be calibrated more accurately, so that the accuracy of the stress detection device in monitoring the wind turbine generator can be further improved.
Based on the above embodiment, the technical solution is further described and optimized in this embodiment, and as a preferred implementation manner, the outer surface of the elastic structure is provided with 4 strain gauge sensors; and a preset power supply voltage, a second strain gauge sensor and a fourth strain gauge sensor are added between the first strain gauge sensor and the third strain gauge sensor in the 4 strain gauge sensors, and the second strain gauge sensor and the fourth strain gauge sensor are used for outputting stress data of tested equipment.
In this embodiment, 4 strain gauge sensors are disposed on the outer surface of the elastic structure, and the 4 strain gauge sensors disposed on the outer surface of the elastic structure are divided into two groups, where the first strain gauge sensor and the third strain gauge sensor are in one group, and the second strain gauge sensor and the fourth strain gauge sensor are in another group.
Referring to fig. 5, fig. 5 is a schematic diagram of an embodiment of the present utility model when 4 strain gauge sensors are disposed on an outer surface of an elastic structure. Wherein the first strain gauge sensor, the second strain gauge sensor, the third strain gauge sensor and the fourth strain gauge sensor are respectively R 1 、R 2 、R 3 And R is 4 And (3) representing. As shown in fig. 5, the first strain gage sensor R 1 And a third strain gage sensor R 3 Adding a preset value in betweenSupply voltage e, i.e. between V+ and V-, is e, and uses a second strain gauge sensor R 2 And a fourth strain gage sensor R 4 To output stress data of the device under test, s+ and S-representing stress output signals E of the device under test. Then, a second strain gauge sensor R 2 And a fourth strain gage sensor R 4 The expression of outputting the stress detection signal E to the device under test is: e=r 3 *e/(R 3 +R 2 )-R 4 *e/(R 1 +R 4 )。
When the stress detection device is used for detecting the stress generated by the wind turbine in the running process, one port part of the omega-shaped elastic structure can be fixed on a connecting frame of a gear box and a cabin main engine in a cabin of the wind turbine, and the other port part of the omega-shaped elastic structure is fixed on a connecting frame of a generator supporting position of the wind turbine and the cabin main engine. When the wind turbine generator generates vibration in the running process, the omega-shaped elastic structure is deformed, and the 4 strain gauge sensors arranged on the outer surface of the omega-shaped elastic structure can reflect the relative vibration changes between the upper gear box of the wind turbine generator and the cabin main engine connecting frame and between the upper gear box of the wind turbine generator and the generator supporting position and the cabin main engine connecting frame. Because the first strain gauge sensor, the second strain gauge sensor, the third strain gauge sensor and the fourth strain gauge sensor can offset vibration generated in the vertical direction and the horizontal direction of the wind turbine generator, torsional vibration generated in the running process of the wind turbine generator can be measured through the first strain gauge sensor, the second strain gauge sensor, the third strain gauge sensor and the fourth strain gauge sensor.
Therefore, in practical application, the 4 strain gauge sensors arranged on the outer surface of the omega-shaped elastic structure can be used for monitoring torsional vibration generated by the tested equipment wind turbine generator in the running process, and the fiber bragg grating sensors arranged on the inner surface of the omega-shaped elastic structure can be used for monitoring vibration generated by the tested equipment wind turbine generator in the up-down direction and the left-right direction in the running process.
Obviously, through the technical scheme provided by the embodiment, the stress data generated by the wind turbine generator in all directions can be accurately and comprehensively monitored by using the detection device.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a hand-held type stress intelligent detection device which characterized in that includes: the elastic structure is in an omega shape, a strain gauge sensor is arranged on the outer surface of the elastic structure, and a fiber bragg grating sensor is arranged on the inner surface of the elastic structure; further comprises: the strain gauge sensor and the fiber bragg grating sensor are connected with the circuit board, and the circuit board is provided with a man-machine interaction module for displaying detection data of the strain gauge sensor and the fiber bragg grating sensor and controlling the circuit board.
2. The device of claim 1, wherein the elastic structure has a groove formed in an inner surface thereof, the fiber grating sensor is disposed in the groove, an optical fiber is connected to the fiber grating sensor, the fiber grating sensor and the optical fiber are adhered to the groove by an adhesive, and a free end of the optical fiber is exposed to an end portion of the elastic structure.
3. The device for intelligent detection of stress according to claim 1, wherein two port portions of the elastic structure are provided with detachable connecting pieces for connecting the tested equipment.
4. A hand-held stress intelligent detection device according to claim 3, wherein the connector is embodied as a U-shaped magnet.
5. The device of claim 1, wherein the man-machine interaction module comprises:
the data acquisition device is used for acquiring detection data of the strain gauge sensor and the fiber bragg grating sensor;
the programmable logic controller is connected with the data acquisition device and used for analyzing the detection data of the strain gauge sensor and the fiber bragg grating sensor;
the touch display screen is connected with the programmable logic controller and used for displaying detection data of the strain gauge sensor and the fiber bragg grating sensor and controlling the circuit board;
and the wireless communication module is connected with the memory and used for transmitting detection data of the strain gauge sensor and the fiber bragg grating sensor to a remote server.
6. The hand-held stress intelligent detection device of claim 5, further comprising:
and the power supply module is connected with the data acquisition unit, the programmable logic controller, the touch display screen and the wireless communication module and is used for supplying power to the data acquisition unit, the programmable logic controller, the touch display screen and the wireless communication module.
7. The device of claim 5, wherein the wireless communication module is a 5G communication module.
8. The hand-held stress intelligent detection device of claim 5, further comprising:
and the memory is connected with the data acquisition device and used for storing detection data of the strain gauge sensor and the fiber bragg grating sensor.
9. The device for intelligent detection of stress according to claim 8, wherein the memory is a cloud memory.
10. A hand-held stress intelligent detection device according to any of claims 1 to 9, wherein the outer surface of the resilient structure is provided with 4 strain gauge sensors; and a preset power supply voltage, a third strain gauge sensor and a fourth strain gauge sensor are added between the first strain gauge sensor and the second strain gauge sensor in the 4 strain gauge sensors, and the third strain gauge sensor and the fourth strain gauge sensor are used for outputting stress data of the tested equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320168108.6U CN220018466U (en) | 2023-01-16 | 2023-01-16 | Handheld stress intelligent detection device |
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