CN216111124U - Intelligent detection system for loosening and fracture of bolt of wind driven generator - Google Patents
Intelligent detection system for loosening and fracture of bolt of wind driven generator Download PDFInfo
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Abstract
The utility model discloses an intelligent detection system for bolt loosening and fracture of a wind driven generator, which comprises a contact type vertical measurement module, a contact type horizontal measurement module, a signal transmission module, a loosening and fracture identification module, a flexible wire fracture detection module, a display module, a non-contact type vertical measurement module, a non-contact type horizontal measurement module and a power supply module, wherein the contact type vertical measurement module is connected with the signal transmission module; the bolt loosening and breaking conditions of the wind driven generator are comprehensively judged through the contact type vertical measuring module, the contact type horizontal measuring module, the non-contact type vertical measuring module, the non-contact type horizontal measuring module and the flexible broken line detecting module, the obtained information is displayed on site and transmitted to the centralized control center of the wind power plant in a wired mode, operating personnel can conveniently observe the operation conditions of key bolts in real time, when the loosening and breaking conditions happen, an alarm short message and centralized control page popup alarm information are sent out at the first time, maintenance personnel can go to the site to fasten and replace the bolts as soon as possible, and the bolt failure accidents are effectively avoided.
Description
Technical Field
The utility model belongs to the technical field of detection of loosening and fracture of bolts of wind driven generators, and particularly relates to an intelligent detection system for loosening and fracture of bolts of wind driven generators.
Background
As is well known, energy is a foundation stone for economic development, currently, China is in the key period of economy and energy structure transformation, particularly, the contradiction between energy supply and demand in 2021 is obvious, the traditional coal-electricity operation cost is increased sharply, the social power supply demand is further expanded, and the individual places adopt a switching-off power limiting mode to stabilize a power grid in order to meet the balance of a power system. Under the environment, each industry enters the key period of technology transformation and breakthrough, realizes the development from quantitative change to qualitative change, and is an important time node for realizing the localization and international introduction of the core technology. The main contradiction is that the requirements of traditional coal power and energy are limited to be larger and larger, the scale of new energy and energy storage equipment is continuously enlarged, wherein wind power generation comprises offshore wind power and land wind power, the development speed is rapid in recent years, the wind power equipment and the generated energy jump the world first at present, the wind power generation capacity reaches 1.5-1.8 hundred million kW in 2020, the development of accelerating the wind power generation becomes one of the national key strategies, the intelligent wind power generation technology is realized in the future, more advanced technologies are realized to be equipped on the wind power generation, and the abundant wind energy resources are reasonably utilized. A large number of high-strength bolts are used at connecting parts of a wind power generation tower barrel, a frame, an engine room, blades and the like, so that stable connection of accessories is realized. If can be when the bolt is not hard up in early, discern through the intellectual detection system means, remind wind farm fortune dimension personnel to carry out the defect processing early, prevent that the accident from further expanding, will be the important measure of avoiding the bolt inefficacy to worsen, and then guarantee aerogenerator safety, steady operation, promote wind-powered electricity generation field operation economic benefits.
The existing wind driven generator bolt loosening and breaking toilet cleaning technology has the following defects and shortcomings: (1) through the investigation of each large wind power group in the early stage, the current main bolt loosening judgment mode adopts an artificial visual inspection identification mode, the judgment is carried out through an artificial marking and photographing mode, and the wind power plant belongs to distributed arrangement, so that the inspection period is long each time, and much inconvenience is brought to the inspection of the bolt loosening and breaking of the wind driven generator on site; (2) at present, the detection means of the bolts of the wind driven generator is single, the comprehensive judgment of the bolt looseness by combining contact type, non-contact type and flexible detection is not realized, and meanwhile, the spatial and three-dimensional monitoring of the bolts is not realized; (3) the existing wind driven generator bolt detection equipment is high in manufacturing cost, has a visual identification mode, has limiting factors in the aspects of equipment manufacturing cost installation and construction, and is inconvenient to popularize and use on site.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides an intelligent detection system for bolt loosening and fracture of a wind driven generator, which comprehensively judges the bolt loosening and fracture conditions of the wind driven generator through a contact type vertical measurement module, a contact type horizontal measurement module, a non-contact type vertical measurement module, a non-contact type horizontal measurement module and a flexible broken line detection module, displays the acquired information on site and transmits the acquired information to a centralized control center of a wind power plant in a wired mode, so that operating personnel can observe the running condition of a key bolt in real time conveniently, and sends an alarm short message and centralized control page popup alarm information at the first time when the loosening and fracture conditions happen, so that maintenance personnel can go to the site for fastening and replacing as soon as possible, and the bolt failure accident is effectively avoided.
The utility model is realized by the following technical scheme:
an intelligent detection system for bolt loosening and fracture of a wind driven generator comprises a contact type vertical measurement module, a contact type horizontal measurement module, a signal transmission module, a loosening and fracture identification module, a flexible wire fracture detection module, a display module, a non-contact type vertical measurement module and a non-contact type horizontal measurement module; wherein, the voltage signal output end of the contact type vertical measurement module is connected with a first analog quantity acquisition port of the loosening fracture identification module, the voltage signal output end of the contact type vertical measurement module is used for contacting and acquiring a voltage signal corresponding to displacement in the vertical direction of the bolt, the voltage signal output end of the contact type horizontal measurement module is connected with a second analog quantity acquisition port of the loosening fracture identification module, the contact type horizontal measurement module is used for contacting and acquiring a voltage signal corresponding to displacement in the horizontal direction of the bolt, a communication port of the signal transmission module is connected with a first communication port of the loosening fracture identification module, the signal transmission module is used for transmitting a bolt horizontal direction signal, a vertical direction signal, a flexible wire signal and an early warning signal acquired by the loosening fracture identification module to a wind power plant centralized control room, and the flexible wire fracture detection module is connected with a digital quantity input port of the loosening fracture identification module, the flexible wire fracture detection module is used for detecting a signal whether the bolt is fractured or not, the communication port of the display module is connected with the second communication port of the loosening fracture identification module and is used for displaying and early warning the signal acquired by the loosening fracture identification module, the voltage signal output end of the non-contact vertical measurement module is connected with the third analog quantity acquisition port of the loosening fracture identification module, the non-contact vertical measurement module is used for non-contact acquisition of a voltage signal corresponding to displacement in the vertical direction of the bolt, the voltage signal output end of the non-contact horizontal measurement module is connected with the fourth analog quantity acquisition port of the loosening fracture identification module, the non-contact horizontal measurement module is used for non-contact acquisition of a voltage signal corresponding to displacement in the horizontal direction of the bolt, and the loosening fracture identification module is used for identifying contact and non-contact voltage signals in the horizontal direction, the vertical direction of the bolt, and converting the displacement signal into a displacement signal, identifying a flexible wire fracture signal, comprehensively judging whether the bolt is loosened or fractured, and synchronously transmitting the detected displacement signal and the early warning information to a signal transmission module and a display module
Preferably, still include power module, power module outputs two way 3.3V voltage grade power, and 3.3V voltage of the same kind is stand-by power, and 3.3V of the same kind is working power, the 3.3V working power of power module output links to each other with the 3.3V power port of contact vertical measurement module, contact horizontal measurement module, signal transmission module, not hard up fracture identification module, flexible line fracture detection module, display module, the perpendicular measurement module of non-contact and non-contact horizontal measurement module respectively for the bolt not hard up fracture intelligent detection system power supply.
Preferably, the contact type vertical measurement module is a sliding resistor vertically installed with the bolt, one end of the contact type vertical measurement module is connected with the 3.3V power supply, the other end of the contact type vertical measurement module is connected with the ground, the public voltage signal output end is connected with the first input end of the voltage follower circuit, and the first voltage signal output end of the voltage follower circuit is connected with the first analog quantity acquisition port of the loosening fracture identification module.
Preferably, the contact type horizontal measurement module is a sliding resistor horizontally installed with the bolt in a rotating mode, one end of the contact type horizontal measurement module is connected with the 3.3V power supply, the other end of the contact type horizontal measurement module is connected with the ground, the public voltage signal output end is connected with the second input end of the voltage following circuit, and the second voltage signal output end of the voltage following circuit is connected with the second analog quantity acquisition port of the loosening fracture identification module.
Preferably, one end of the flexible wire breakage detection module is connected with the 3.3V power supply, the other end of the flexible wire breakage detection module is connected with any digital input port of the loosening breakage identification module, when the bolt is not broken, the flexible wire breakage detection module outputs 3.3V to the loosening breakage identification module, and after the bolt is broken, the loosening breakage identification module cannot detect the digital signal input by the 3.3V, so that the bolt is judged to be broken.
Preferably, the non-contact vertical measurement module is a hall sensor vertically installed with the bolt, one end of the hall sensor is connected with the 3.3V power supply, the other end of the hall sensor is connected with the ground, the voltage signal output end of the hall sensor is connected with the third input end of the voltage follower circuit, and the third voltage signal output end of the voltage follower circuit is connected with the third analog quantity acquisition port of the loosening fracture identification module.
Preferably, the non-contact horizontal measurement module is a Hall sensor horizontally mounted with a bolt in a rotating mode, one end of the Hall sensor is connected with a 3.3V power supply, the other end of the Hall sensor is connected with the ground, a voltage signal output end of the voltage follower circuit is connected with a fourth input end of the voltage follower circuit, and a fourth voltage signal output end of the voltage follower circuit is connected with a fourth analog quantity acquisition port of the loosening fracture identification module.
Preferably, the loosening fracture identification module includes an embedded MSP430F149 processor, a high-frequency clock circuit and a low-frequency clock circuit, the high-frequency clock circuit and the low-frequency clock circuit are used for providing high-frequency and low-frequency clock signals for the embedded MSP430F149 processor, the embedded MSP430F149 processor integrates digital quantity, analog quantity and communication circuit, the embedded MSP430F149 processor judges contact and non-contact voltage signals of the bolt in the vertical and horizontal directions in real time and compares the contact and non-contact voltage signals with set loosening and fracture fixed values, when the contact and non-contact voltage signals exceed the fixed values, corresponding information is sent out, and a fracture signal of the bolt is indirectly judged according to whether the output voltage signal of the flexible wire fracture detection module disappears, and the embedded MSP430F149 processor simultaneously transmits the collected signals and the judged signals to the in-place display module through the communication port respectively, and transmits the signals to the centralized control room through the signal transmission module.
Preferably, the display module can modify the fixed value of looseness and fracture, the display system can display the running parameters of the system and the popup window can display the information of looseness and fracture, signals from the signal transmission module can be sent and received in a bidirectional mode, the centralized control room can remotely modify the fixed value of the looseness and fracture identification module by using the signal transmission module, meanwhile, the output signal of the signal transmission module is directly accessed to the centralized control communication terminal of the wind turbine generator, and data exchange is carried out by applying the same-type communication protocol of a centralized control circuit.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the utility model, the loosening and fracture identification module carries out contact type bolt horizontal and vertical displacement detection on the voltage signals transmitted by the contact type vertical measurement module and the contact type horizontal measurement module, further carries out non-contact type horizontal and vertical displacement detection on the voltage signals transmitted by the non-contact type vertical measurement module and the non-contact type vertical measurement module, realizes spatial bolt loosening detection of the wind driven generator, finally outputs signals through the flexible wire fracture detection module, comprehensively judges bolt loosening direction, displacement and fracture signals, timely discovers potential loosening or fracture conditions of the bolt, and guarantees the safety of the body structure of the wind driven generator.
Furthermore, the contact type vertical measurement module and the contact type horizontal measurement module both adopt a resistance type direct measurement mode, the sensitivity of looseness identification in the horizontal direction and the vertical direction is high, the selectivity is more comprehensive, the actual looseness conditions of bolts in the vertical direction and the horizontal direction can be intuitively reflected, meanwhile, the resistance is easy to purchase, the cost is lower, and the purchase, installation and maintenance costs of the device are indirectly reduced under the condition of large installation demand.
Furthermore, the non-contact vertical measurement module and the non-contact horizontal measurement module adopt the Hall effect to carry out non-contact detection, so that the installation and the use are very convenient, meanwhile, the looseness of the bolt in the vertical direction and the horizontal direction can be still detected under the condition that the contact detection cannot be installed, the adaptability is strong, and in addition, the non-contact type belongs to nondestructive installation.
Furthermore, the utility model adopts a combined detection means of contact and non-contact bolt loosening and fracture to realize the complementation of contact and non-contact advantages and disadvantages and judge the signal of bolt loosening and fracture more comprehensively.
Furthermore, under the condition that the bolt is broken, the bolt breakage signal can be identified through the flexible wire breakage detection module, serious accidents of bolt breakage can be directly monitored, the switching value signal is adopted for flexible wire breakage, and the identification accuracy rate and reliability are high.
Furthermore, the loosening and fracture identification module adopts an embedded microprocessor with high integration level, and contains a plurality of analog quantity acquisition and communication ports, so that the circuit is further simplified, and the cost is reduced.
Furthermore, the signal transmission module is directly connected to the centralized control communication terminal of the wind turbine generator, a centralized control line communication protocol is applied, a special line does not need to be additionally laid, and the detection signal can be directly read in the centralized control room of the wind power plant.
Furthermore, the bolt looseness and fracture condition is detected in a three-dimensional comprehensive mode, the problem that the bolt looseness judging mode adopts an artificial visual inspection identifying mode, judgment is carried out through an artificial marking mode and a photographing mode, and the workload of inspection personnel is reduced.
Furthermore, the utility model can replace a visual identification mode to detect the bolt, thereby reducing the detection cost of loosening and fracture and being convenient for popularization and use on site.
Drawings
FIG. 1 is a schematic block diagram of an intelligent detection system for bolt loosening and fracture of a wind driven generator.
FIG. 2 is a circuit diagram of an intelligent detection system for bolt loosening and fracture of a wind driven generator.
FIG. 3 is a logic diagram of bolt loosening according to the present invention.
FIG. 4 is a logic diagram of bolt breakage according to the present invention.
In the figure: 1-contact vertical measurement module; 2-contact level measurement module; 3-a signal transmission module; 4-loosening fracture identification module; 5, a flexible wire fracture detection module; 6-a display module; 7-a non-contact vertical measurement module; 8-a non-contact level measurement module; 9-power module.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the utility model.
The utility model can solve the problem that the existing bolt loosening and breaking of the wind driven generator is difficult to detect intelligently, provides a more comprehensive and intelligent detection system for the bolt loosening and breaking of the wind driven generator, can replace a manual mode, avoids the problems existing in the existing detection, and improves the working efficiency.
The utility model discloses an intelligent detection system for bolt loosening and fracture of a wind driven generator, which comprises a contact type vertical measurement module 1, a contact type horizontal measurement module 2, a signal transmission module 3, a loosening fracture identification module 4, a flexible wire fracture detection module 5, a display module 6, a non-contact type vertical measurement module 7 and a non-contact type horizontal measurement module 8, wherein the contact type vertical measurement module is connected with the signal transmission module; wherein, the voltage signal output end of the contact type vertical measurement module 1 is connected with a first analog quantity acquisition port of the loosening fracture identification module 4, the contact type vertical measurement module 1 is used for contacting and acquiring voltage signals corresponding to displacement in the vertical direction of the bolt, the voltage signal output end of the contact type horizontal measurement module 2 is connected with a second analog quantity acquisition port of the loosening fracture identification module 4, the contact type horizontal measurement module 2 is used for contacting and acquiring voltage signals corresponding to displacement in the horizontal direction of the bolt, the communication port of the signal transmission module 3 is connected with a first communication port of the loosening fracture identification module 4, the signal transmission module 3 is used for transmitting horizontal direction signals, vertical direction signals, flexible line signals and early warning signals of the bolt acquired by the loosening fracture identification module 4 to a wind power plant centralized control room, and the flexible line fracture detection module 5 is connected with a digital quantity input port of the loosening fracture identification module 4, the flexible wire fracture detection module 5 is used for detecting a signal indicating whether a bolt is fractured or not, the communication port of the display module 6 is connected with the second communication port of the loosening fracture identification module 4 and is used for displaying and early warning the signal acquired by the loosening fracture identification module 4, the voltage signal output end of the non-contact vertical measurement module 7 is connected with the third analog quantity acquisition port of the loosening fracture identification module 4, the non-contact vertical measurement module 7 is used for non-contact acquisition of voltage signals corresponding to displacement in the vertical direction of the bolt, the voltage signal output end of the non-contact horizontal measurement module 8 is connected with the fourth analog quantity acquisition port of the loosening fracture identification module 4, the non-contact horizontal measurement module 8 is used for non-contact acquisition of voltage signals corresponding to displacement in the horizontal direction of the bolt, the loosening fracture identification module 4 is used for identifying the horizontal direction of the bolt, Vertical contact and non-contact voltage signals are converted into displacement signals, flex fracture signals are further recognized, whether the bolt is loosened or fractured is comprehensively judged, and the detected displacement signals and early warning information are synchronously transmitted to the signal transmission module 3 and the display module 6
In this embodiment, still include power module 9, power module 9 outputs two way 3.3V voltage level power, and 3.3V voltage of the same way is stand-by power supply, and 3.3V of the same way is working power supply, the 3.3V working power supply of power module 9 output links to each other with the 3.3V power port of contact vertical measurement module 1, contact level measurement module 2, signal transmission module 3, not hard up fracture identification module 4, flexible line fracture detection module 5, display module 6, non-contact vertical measurement module 7 and non-contact level measurement module 8 respectively for supplying power for bolt not hard up fracture intelligent detection system.
In this embodiment, the contact type vertical measurement module 1 is a sliding resistor vertically installed with a bolt, one end of the sliding resistor is connected with a 3.3V power supply, the other end of the sliding resistor is connected with the ground, a common voltage signal output is connected with a first input end of a voltage follower circuit, and a first voltage signal output end of the voltage follower circuit is connected with a first analog quantity acquisition port of the loosening fracture identification module 4.
In this embodiment, the contact type leveling module 2 is a sliding resistor horizontally installed with the rotation of the bolt, one end of the sliding resistor is connected with the 3.3V power supply, the other end of the sliding resistor is connected with the ground, the common voltage signal output end is connected with the second input end of the voltage follower circuit, and the second voltage signal output end of the voltage follower circuit is connected with the second analog quantity acquisition port of the loosening fracture identification module 4.
In this embodiment, one end of the flexible wire breakage detection module 5 is connected with the 3.3V power supply, and the other end of the flexible wire breakage detection module is connected with any digital input port of the loosening breakage identification module 4, when the bolt is not broken, the flexible wire breakage detection module 5 outputs 3.3V to the loosening breakage identification module 4, and after the bolt is broken, the loosening breakage identification module 4 cannot detect the digital signal input by the 3.3V, so that the bolt is judged to be broken.
In this embodiment, the non-contact vertical measurement module 7 is a hall sensor vertically installed with a bolt, one end of the hall sensor is connected with a 3.3V power supply, the other end of the hall sensor is connected with the ground, a voltage signal output is connected with a third input end of the voltage follower circuit, and a third voltage signal output end of the voltage follower circuit is connected with a third analog quantity acquisition port of the loosening fracture identification module 4.
In this embodiment, the non-contact leveling module 8 is a hall sensor horizontally mounted with the rotation of the bolt, one end of the hall sensor is connected with the 3.3V power supply, the other end of the hall sensor is connected with the ground, the voltage signal output end is connected with the fourth input end of the voltage follower circuit, and the fourth voltage signal output end of the voltage follower circuit is connected with the fourth analog quantity acquisition port of the loosening fracture identification module 4.
In this embodiment, the loose fracture identification module 4 mainly includes an embedded MSP430F149 processor and high and low frequency clock circuits, the high-frequency and low-frequency clock circuits are used for providing high-frequency and low-frequency clock signals for the embedded MSP430F149 processor, the embedded MSP430F149 processor integrates digital quantity, analog quantity and communication circuits, the embedded MSP430F149 processor judges contact and non-contact voltage signals of the vertical and horizontal directions of the bolt in real time, and comparing with the set loosening and fracture setting values, and sending corresponding information when the loosening and fracture setting values are exceeded, meanwhile, the breakage signal of the bolt is indirectly judged according to whether the voltage signal output by the flexible wire breakage detection module 5 disappears, the embedded MSP430F149 processor simultaneously transmits the acquired signals and the judged signals to the local display module 6 through the communication port, and transmits the signals to the wind farm centralized control room through the signal transmission module 3.
In this embodiment, the display module 6 may modify the loosening and fracture fixed value, simultaneously display the system operating parameters, pop-up window display loosening and fracture information, bidirectionally send and receive signals from the signal transmission module 3, the centralized control room may remotely modify the loosening and fracture identification module 4 fixed value by using the signal transmission module 3, and simultaneously, the output signal of the signal transmission module 3 is directly accessed to the centralized control communication terminal of the wind turbine generator, and data exchange is performed by using the same type communication protocol of the centralized control line.
As shown in the figure 2, the contact type vertical measurement module (1) comprises a sliding resistor RJC1 and a voltage follower circuit G1, the contact type horizontal measurement module (2) comprises a sliding resistor RJS1 and a voltage follower circuit G1, the signal transmission module (3) comprises a signal transmission interface XC1 and an integrated module for converting a 232 protocol into an Ethernet protocol, the loosening fracture identification module (4) comprises an embedded MSP430F149 processor and high and low frequency clock circuits, the high and low frequency clock circuits comprise crystal oscillators and capacitors, the flexible wire fracture detection module (5) comprises a flexible wire fracture interface RXDL1 and flexible wires which are attached and installed with bolts, the display module (6) comprises a display interface XS1 and a serial display screen, the non-contact type vertical measurement module (7) comprises a non-contact type vertical measurement interface HC1 and a vertical Hall sensor, the non-contact type horizontal measurement module (8) is connected with an HS2 and a horizontal Hall sensor, the power supply module (9) comprises a power supply interface D1 and a power supply.
As shown in fig. 3, in order to improve the reliability of the loosening detection, a contact-type vertical loosening detection, a non-contact-type vertical loosening detection, a contact-type horizontal loosening detection, a non-contact-type horizontal loosening detection or logic is selected, and any loosening logic can trigger bolt loosening information and send out loosening information corresponding to a mark.
As shown in fig. 4, in order to improve the reliability of fracture detection, a contact-type vertical fracture detection, a non-contact-type vertical fracture detection, a contact-type horizontal fracture detection, a non-contact-type horizontal fracture detection, and a flex fracture detection signal or logic is selected, and any fracture logic can trigger bolt fracture information and send fracture information of a corresponding mark.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. An intelligent detection system for bolt loosening and fracture of a wind driven generator is characterized by comprising a contact type vertical measurement module (1), a contact type horizontal measurement module (2), a signal transmission module (3), a loosening and fracture identification module (4), a flexible line fracture detection module (5), a display module (6), a non-contact type vertical measurement module (7) and a non-contact type horizontal measurement module (8); wherein the voltage signal output end of the contact type vertical measurement module (1) is connected with a first analog quantity acquisition port of the loosening fracture identification module (4), the contact type vertical measurement module (1) is used for acquiring voltage signals corresponding to displacement in the vertical direction of the bolt in a contact manner, the voltage signal output end of the contact type horizontal measurement module (2) is connected with a second analog quantity acquisition port of the loosening fracture identification module (4), the contact type horizontal measurement module (2) is used for acquiring voltage signals corresponding to displacement in the horizontal direction of the bolt in a contact manner, the communication port of the signal transmission module (3) is connected with a first communication port of the loosening fracture identification module (4), and the signal transmission module (3) is used for transmitting horizontal direction signals, vertical direction signals, flexible line signals and early warning signals of the bolt acquired by the loosening fracture identification module (4) to a wind power plant centralized control room, the flexible line fracture detection module (5) is connected with a digital quantity input port of the loosening fracture identification module (4), the flexible line fracture detection module (5) is used for detecting whether a bolt is fractured or not, a display module (6) communication port is connected with a second communication port of the loosening fracture identification module (4) and used for displaying and early warning signals collected by the loosening fracture identification module (4), a voltage signal output end of the non-contact vertical measurement module (7) is connected with a third analog quantity collection port of the loosening fracture identification module (4), the non-contact vertical measurement module (7) is used for collecting voltage signals corresponding to displacement in the vertical direction of the bolt in a non-contact mode, a voltage signal output end of the non-contact horizontal measurement module (8) is connected with a fourth analog quantity collection port of the loosening fracture identification module (4), and the non-contact horizontal measurement module (8) is used for collecting voltage corresponding to displacement in the horizontal direction of the bolt in the non-contact mode The loosening and fracture identification module (4) is used for identifying contact type and non-contact type voltage signals in the horizontal and vertical directions of the bolt, converting the contact type and non-contact type voltage signals into displacement signals, identifying fracture signals of the flexible wire, comprehensively judging whether the bolt is loosened or fractured, and synchronously transmitting the detected displacement signals and early warning information to the signal transmission module (3) and the display module (6).
2. The intelligent detection system for bolt loosening and fracture of the wind driven generator according to claim 1, further comprising a power module (9), wherein the power module (9) outputs two 3.3V voltage class power supplies, one 3.3V voltage class power supply is a standby power supply, the other 3.3V class power supply is a working power supply, and the 3.3V working power supply output by the power module (9) is respectively connected with 3.3V power supply ports of the contact type vertical measurement module (1), the contact type horizontal measurement module (2), the signal transmission module (3), the loosening and fracture identification module (4), the flexible wire fracture detection module (5), the display module (6), the non-contact type vertical measurement module (7) and the non-contact type horizontal measurement module (8) and used for supplying power to the intelligent detection system for bolt loosening and fracture.
3. The intelligent detection system for bolt loosening and fracture of the wind driven generator according to claim 1, wherein the contact type vertical measurement module (1) is a sliding resistor which is vertically installed with a bolt, one end of the sliding resistor is connected with a 3.3V power supply, the other end of the sliding resistor is connected with the ground, a common voltage signal output end is connected with a first input end of a voltage follower circuit, and a first voltage signal output end of the voltage follower circuit is connected with a first analog quantity acquisition port of the loosening and fracture identification module (4).
4. The intelligent detection system for bolt loosening and fracture of the wind driven generator as claimed in claim 1, wherein the contact type horizontal measurement module (2) is a sliding resistor horizontally installed with the rotation of the bolt, one end of the sliding resistor is connected with a 3.3V power supply, the other end of the sliding resistor is connected with the ground, a common voltage signal output end is connected with a second input end of the voltage follower circuit, and a second voltage signal output end of the voltage follower circuit is connected with a second analog quantity acquisition port of the loosening and fracture identification module (4).
5. The intelligent detection system for bolt loosening and fracture of wind driven generator according to claim 1, characterized in that one end of the flexible wire fracture detection module (5) is connected with a 3.3V power supply, the other end of the flexible wire fracture detection module is connected with any digital quantity input port of the loosening and fracture identification module (4), when the bolt is not fractured, the flexible wire fracture detection module (5) outputs 3.3V to the loosening and fracture identification module (4), and after the bolt is fractured, the loosening and fracture identification module (4) cannot detect the digital quantity signal input by 3.3V, so as to judge that the bolt is fractured.
6. The intelligent detection system for bolt loosening and fracture of the wind driven generator according to claim 1, wherein the non-contact type vertical measurement module (7) is a Hall sensor vertically installed with a bolt, one end of the Hall sensor is connected with a 3.3V power supply, the other end of the Hall sensor is connected with the ground, a voltage signal output end is connected with a third input end of a voltage follower circuit, and a third voltage signal output end of the voltage follower circuit is connected with a third analog quantity acquisition port of the loosening and fracture identification module (4).
7. The intelligent detection system for bolt loosening and fracture of the wind driven generator as claimed in claim 1, wherein the non-contact horizontal measurement module (8) is a Hall sensor horizontally mounted with the rotation of the bolt, one end of the Hall sensor is connected with a 3.3V power supply, the other end of the Hall sensor is connected with the ground, a voltage signal output end is connected with a fourth input end of a voltage follower circuit, and a fourth voltage signal output end of the voltage follower circuit is connected with a fourth analog quantity acquisition port of the loosening and fracture identification module (4).
8. The intelligent detection system for bolt loosening and fracture of wind driven generator according to claim 1, wherein the loosening and fracture identification module (4) comprises an embedded MSP430F149 processor and high and low frequency clock circuits for providing high and low frequency clock signals for the embedded MSP430F149 processor, the embedded MSP430F149 processor integrates digital quantity, analog quantity and communication circuit, the embedded MSP430F149 processor judges vertically and horizontally contact and non-contact voltage signals of the bolt in real time and compares the signals with preset loosening and fracture fixed values, when the fixed values are exceeded, corresponding information is sent out, and simultaneously, the fracture signal of the bolt is indirectly judged according to whether the voltage signal output by the flexible wire fracture detection module (5) disappears, the embedded MSP430F149 processor simultaneously transmits the collected signals and the judged signals respectively to the existing display module (6) through the communication port for display, and is transmitted to a wind power plant centralized control room through a signal transmission module (3).
9. The intelligent detection system for the bolt loosening and the fracture of the wind driven generator according to claim 1 is characterized in that the display module (6) can modify the fixed value of the loosening and the fracture, simultaneously display the operating parameters of the system, display the loosening and the fracture information through a pop-up window, bidirectionally send and receive signals from the signal transmission module (3), the centralized control room can remotely modify the fixed value of the loosening and fracture identification module (4) through the signal transmission module (3), simultaneously, output signals of the signal transmission module (3) are directly connected into a centralized control communication terminal of the wind turbine generator set, and data exchange is carried out by applying a communication protocol of the same type of a centralized control line.
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| CN202122784721.4U CN216111124U (en) | 2021-11-12 | 2021-11-12 | Intelligent detection system for loosening and fracture of bolt of wind driven generator |
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| CN202122784721.4U CN216111124U (en) | 2021-11-12 | 2021-11-12 | Intelligent detection system for loosening and fracture of bolt of wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109740A (en) * | 2021-11-12 | 2022-03-01 | 华能如东八仙角海上风力发电有限责任公司 | Intelligent detection system and method for bolt loosening and fracture of wind driven generator |
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2021
- 2021-11-12 CN CN202122784721.4U patent/CN216111124U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109740A (en) * | 2021-11-12 | 2022-03-01 | 华能如东八仙角海上风力发电有限责任公司 | Intelligent detection system and method for bolt loosening and fracture of wind driven generator |
| CN114109740B (en) * | 2021-11-12 | 2024-06-07 | 华能如东八仙角海上风力发电有限责任公司 | Intelligent detection system and method for bolt loosening and breakage of wind driven generator |
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