CN116104711A - In-service detection system and detection method for main shaft of wind generating set - Google Patents
In-service detection system and detection method for main shaft of wind generating set Download PDFInfo
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- CN116104711A CN116104711A CN202211624264.5A CN202211624264A CN116104711A CN 116104711 A CN116104711 A CN 116104711A CN 202211624264 A CN202211624264 A CN 202211624264A CN 116104711 A CN116104711 A CN 116104711A
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses an in-service detection system and a detection method for a main shaft of a wind generating set, wherein the detection system comprises a solar panel, a power transmission cable, a detection device and a notebook computer, and the solar panel supplies power for the detection device; the detection device comprises an outermost annular support, a cross-shaped rotating support and a detection module, wherein all parts of the detection module are arranged on the rotating support, and the rotating support drives the detection module to complete circumferential scanning of the end part of a main shaft of the fan; the detection device collects detection data through the scanning device, and after data processing, the detection data are wirelessly transmitted to the notebook computer operation end to complete in-service detection of the spindle. The invention adopts a modularized design, the running state of the fan has no influence on detection, the detection reliability and repeatability are improved, and the detection speed and the detection precision are high; the structure is reasonable, the module is convenient to disassemble and assemble, the maintenance is simple and convenient, and the cost is low; the method is suitable for in-service detection of fan spindles with different types and diameters, and has strong universality.
Description
Technical Field
The invention relates to an in-service detection system and a detection method for a main shaft of a wind generating set, and belongs to the field of industrial detection equipment manufacturing.
Background
In recent years, the installed capacity of wind power in China is continuously increased, and the contribution of wind power to national power supply is continuously improved. According to the related statistics, the national wind power in 2021 shows a high-quality jump development situation, the capacity of the wind power grid-connected installation breaks through 3 hundred million kilowatts, the wind power generation capacity breaks through 6000 hundred million kilowatt hours, the new offshore wind power installation is greatly increased, and the wind power utilization rate is gradually improved. Along with the large-scale production and operation of the wind generating set, the quality of main components in the fan and the running condition of the set are also more and more paid attention to.
The fan main shaft is used as one of three important parts of the wind power generation equipment, is an important part for connecting the fan blades and the fan cabin, and has high technical parameter and mechanical property requirements and strict form and position tolerance and dimensional tolerance requirements. Meanwhile, the main shaft belongs to a rotating part, is subjected to stress effects such as fatigue, bending, torsion and even stretching for a long time, easily generates fatigue defects, initiates crack sources and finally leads to main shaft fracture accidents. Once the main shaft is broken, the blades and the hubs are caused to fall aloft, so that the machine set is greatly damaged and even the whole machine is scrapped, and the shaft breakage accident occurs in a plurality of domestic wind fields, so that the detection requirement of the main shaft of the fan is greatly increased, and meanwhile, the nondestructive detection technology is also required to be higher.
At present, manual ultrasonic detection technology is generally adopted for nondestructive detection of a fan spindle: before detection, grid lines or concentric circles are drawn in advance at the end part of the forging piece, and after the couplant is brushed or sprayed, ultrasonic scanning is carried out along the line by holding an ultrasonic probe. The following problems are common in conventional ultrasonic detection: the height of the fan is generally more than 60 meters, the fan is often accompanied with shaking conditions of different degrees, when in detection, a worker needs to climb to the hub bin part through a manhole of the cabin, and the detection is implemented at the end part of the main shaft, so that the requirement on the detector is high and the safety risk is high; because personnel work at the high position of the hub bin, the machine must be stopped for detection, and the in-service detection cannot be realized; the main shaft detection belongs to a high-risk operation project, personnel need to hold a professional high-altitude operation certificate and a detection certificate, and the performance requirements of instruments and equipment are high, so that the detection cost is high; the manual detection speed is low, the efficiency is low, and only one main shaft of the fan can be detected in one day generally; the maintenance period of the fan is long, and the main shaft of the fan is usually detected once in two years, so that new defects cannot be found in time, and the existing defects cannot be monitored in time; the handheld probe cannot ensure uniform pressure of the probe, so that the detection sensitivity in the scanning process is large in variation amplitude, the repeatability of a detection result is poor, and the detection precision is low.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, provides an in-service detection system and a detection method for a main shaft of a wind generating set, realizes automatic phased array ultrasonic detection of remote control of the main shaft of a fan, solves various problems in manual ultrasonic detection, and improves detection quality and efficiency.
In order to solve the technical problem, the invention provides an in-service detection system for a main shaft of a wind generating set, which comprises a solar panel, a power transmission cable, a detection device and a notebook computer, wherein the solar panel generates electric energy, and the electric energy is transmitted to a battery module of the detection device for storage through the power transmission cable to supply power for the detection device; the whole detection device is disc-shaped and comprises an outermost annular support, a cross-shaped rotating support and a detection module, four rubber wheels are arranged at the end part of the rotating support, and the rubber wheels are clamped into annular track grooves at the inner side of the support, so that the rotating support and the support are mounted together; each part of the detection module is arranged on a rotating bracket, and the rotating bracket can freely rotate in the support to drive the detection module to finish circumferential scanning of the end part of the fan main shaft; the detection device is arranged at the end part of the main shaft of the fan, acquires detection data through the scanning device, wirelessly transmits the detection data to the operating end of the notebook computer after data processing, and completes in-service detection work of the main shaft through remote control of the notebook computer.
The support comprises an annular track and three supporting legs, the annular track is of a hollow structure, and the side face of the inner ring is provided with a track matched with the specification of the rubber wheel; the three supporting legs are equidistantly distributed around the annular track and fixed on the outer side of the annular track in a welding mode.
The landing leg comprises a magnetic switch, a magnetic base, a knurled flat head screw I, a circular ring support arm and a column support rod I, wherein a disc type magnetic base is arranged at the lower part of the column support rod, a knob type magnetic switch is arranged on the side surface of the magnetic base, and the application and release of magnetic force in the magnetic base can be controlled by rotating the magnetic switch; the upper end of the upright post strut penetrates through a circular ring support arm fixed on the circular ring track to complete the assembly of the support leg; the side of the circular ring support arm is provided with a knurled flat head screw I, the height of the detection device can be adjusted by adjusting the leakage length of the upright post strut I, and the knurled flat head screw I is screwed to fix the upright post strut I after the device height is determined.
The rotating bracket comprises a cross body, servo motors, rubber wheels and a straight rack, the main structure of the rotating bracket is the cross body, the tail ends of four support arms of the cross body are provided with one servo motor, and the front ends of the four servo motors are provided with the rubber wheels; the outer side of the rubber wheel is processed into an inclined plane, the specification and the size of the inclined plane are matched with those of the inner rail of the annular rail, and the rubber wheel can freely rotate in the annular rail; the servo motor drives the rubber wheel to rotate, so that circumferential movement of the rotating bracket is realized; the cross body is characterized in that a groove is formed in the upper surface of one support arm of the cross body, and a straight tooth rack is arranged in the groove and is used for being matched with the scanning device.
The detection module comprises five sub-modules of a phased array ultrasonic processor, a controller, a battery, an oil pump and a scanning device, wherein the five sub-modules are fixedly arranged on a rotating support, the phased array ultrasonic processor, the controller, the battery and the oil pump are arranged on the rotating support in a straight line, are connected together through a control cable and are uniformly controlled by the controller, the battery supplies power to the detection device, the phased array ultrasonic processor is responsible for collecting and processing detection data, and the oil pump pumps the oil to a phased array probe part through an oil delivery pipe and is used as a phased array probe coupling agent; three indicator lamps are arranged on the surface of the phased array ultrasonic processor and used for displaying the state of the processor; the surface of the controller is provided with a button switch for controlling the start and stop of the system; the surface of the battery is provided with a liquid crystal display screen for displaying the electric quantity of the battery.
The scanning device comprises a phased array probe, a driving motor and a column strut II, and the scanning device is powered by the driving motor; the front end of the middle shaft of the driving motor is provided with a straight-tooth gear which is meshed with a straight-tooth rack on the cross body, and the driving motor drives the straight-tooth gear to roll back and forth on the straight-tooth rack, so that the scanning device can move back and forth; the phased array probe is fixed at the lower end of the second upright post supporting rod, the upper end of the second upright post supporting rod penetrates through the positioning hole of the driving motor shell, and the phased array probe is connected with the driving motor; the phased array probe is connected with the phased array ultrasonic processor through a probe wire, the phased array ultrasonic processor controls the phased array probe to acquire detection data and process the detection data, and finally the detection data are transmitted to the notebook computer operation end through the controller to be displayed.
The stand column support rod is divided into two sections, the diameter of the lower end section is smaller, the stand column support rod is inserted into the upper end support rod, a spring is arranged between the two sections of support rods, so that a pressing force can be provided for the phased array probe, good contact between the phased array probe and the end face of a main shaft of a fan is ensured, and the position of the phased array probe can be adjusted by adjusting the extending length of the stand column support rod II so as to be suitable for detection of main shafts with different specifications;
the oil pipe limiting block is made of two rubber materials and can move on the second upright post rod and is used for fixing an oil conveying pipe, so that engine oil can be accurately thrown near the phased array probe and used as a coupling agent for detecting the phased array probe.
The invention also provides an assembling method of the in-service detection system of the main shaft of the wind generating set, which comprises the following steps:
1) According to the outline dimension of the solar panel, processing a mounting hole on the surface of a hub of the wind generating set, mounting and fixing the solar panel, and additionally mounting a light-transmitting protective housing on the surface;
2) Assembling all parts of the detection device, placing the detection device on the end face of the fan spindle, ensuring that the center of the detection device is positioned on the center line of the fan spindle, poking the magnetic switch one by one to enable the magnetic base to have magnetism, and fixing the detection device on the end part of the fan spindle;
3) Adjusting the position of the annular track to enable the end face of the rotating bracket to be parallel to the end face of the main shaft of the fan, screwing the knurled flat head screws I one by one, and fixing the upright post support rod I in the annular support arm;
4) Pushing and pulling the upright post strut II, and adjusting the position of the phased array probe to ensure that the phased array probe is in good contact with the end face of the main shaft of the fan, and the applied pressure is moderate;
5) Screwing the knurled flat head screw II 3 to fix the upright post strut II;
6) One end of a power transmission cable is inserted into a connecting port of a solar cell panel, the other end of the power transmission cable is inserted into a battery interface, a detection system is electrified, a surface switch button of a controller is pressed, and the detection system is started.
The invention also provides a method for detecting the in-service of the main shaft of the wind generating set by using the detection system, which comprises the following detection steps:
1) Opening the notebook computer and connecting the detection device by wireless;
2) The four servo motors are synchronously started at the end part of the rotating bracket, the rotating bracket drives the scanning device to move along the circumference, and the oil pump pumps the engine oil to the position of the phased array probe through the oil delivery pipe;
3) The phased array probe synchronously rotates and phased array ultrasonic detection is implemented on the main shaft of the fan;
4) Data are synchronously collected and transmitted to a phased array ultrasonic processor through a probe wire, and finally real-time data transmission is carried out through a controller and a notebook computer operation end;
5) The notebook computer processes and stores the detection data and displays the detection result;
6) After the detection is completed, the notebook computer operation end issues a sleep instruction of the detection system, and when the detection is required, the detection device is connected again to repeat the detection work.
The beneficial effects are that: the solar energy power generation system is powered by the solar panel and is provided with the battery module for storing electric quantity, so that the solar energy power generation system is a set of self-sufficient independent system, a power line is not required to be arranged in a fan hub, and the solar energy power generation system can be synchronously installed when a wind generating set is built, and is convenient to install and use; the wireless transmission function is realized, a detector only needs to remotely control at the notebook computer end, the operation of the fan hub part of a person on the high altitude is not needed, the safety risk is avoided, and the detection and the use are convenient; the modularized design thought is adopted, the structural layout is reasonable, the module is convenient to disassemble and assemble, the maintenance is simple and convenient, and the use cost is low; the mechanical automatic scanning device can realize uniform movement of the probe and automatic supply of the couplant, reduces interference of human factors, improves detection reliability and repeatability, and has high detection speed and high precision; the solar cell panel is arranged on the outer surface of the fan hub, the detection device is arranged at the end part of the main shaft and synchronously rotates with the hub, the relative position is static, the in-service detection can be realized after the detection device is arranged, and the running state of the fan has no influence on the detection implementation; through remote control, the fan main shaft can be detected at any time, so that defects can be found in time, and meanwhile, the existing defects can be monitored in operation. The detection system has the function of automatic data analysis, the detection data of the main shaft in the past are automatically analyzed and compared, and the defect judgment is visual, qualitative and quantitative and accurate; the invention is suitable for in-service detection of fan spindles with different types and diameters, and can implement detection only by adjusting the height of the support seat and the position of the probe according to the size of the spindle, and has good process applicability, strong universality and high economic benefit.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the detecting device of the present invention;
FIG. 3 is an exploded view of the detection device of the present invention;
FIG. 4 is a schematic view of the structure of the support of the present invention;
FIG. 5 is a schematic view of the leg structure of the present invention;
FIG. 6 is a schematic view of the structure of the rotating bracket of the present invention;
FIG. 7 is a schematic view of the combination of a rotating bracket and a support of the present invention;
FIG. 8 is a schematic diagram of a detection module according to the present invention;
FIG. 9 is a schematic diagram of a scanning device according to the present invention;
FIG. 10 is a schematic diagram of a field application of the detection system of the present invention.
In the figure: 1. a solar cell panel; 2. a power transmission cable; 3. a detection device; 4. a notebook computer; 5. a fan main shaft; 31. a support; 32. rotating the bracket; 33. a detection module; 311. an endless track; 312. a support leg; 3121. a magnetic switch; 3122. a magnetic base; 3123. knurled flat head screw I; 3124. a circular ring support arm; 3125. a column strut I; 321. a cross body; 322. a servo motor; 323. a rubber wheel; 324. a spur rack; 331. a phased array ultrasonic processor; 332. a control cable; 333. a controller; 334. a battery; 335. an oil pump; 336. an oil delivery pipe; 337. a scanning device; 3371. a phased array probe; 3372. a probe wire; 3373. a driving motor; 3374. a spur gear; 3376. knurled flat head screw II; 3377. an oil pipe limiting block; 3378. and a post strut II.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-10, the invention provides an in-service detection system for a main shaft of a wind generating set, which comprises a solar panel 1, a power transmission cable 2, a detection device 3 and a notebook computer 4, wherein the solar panel 1 generates electric energy, and the electric energy is transmitted to a battery module of the detection device 3 for storage through the power transmission cable 2 to supply power for the detection device 3; the whole detection device 3 is disc-shaped and comprises an outermost annular support 31, a cross-shaped rotating support 32 and a detection module 33, four rubber wheels 323 are arranged at the end part of the rotating support 32, and the rubber wheels 323 are clamped into grooves of an annular track 311 at the inner side of the support 31, so that the rotating support 32 and the support 31 are installed together; each part of the detection module 33 is arranged on the rotating bracket 32, and the rotating bracket 32 can freely rotate in the support 31 to drive the detection module 33 to finish the circumferential scanning of the end part of the fan main shaft; the detection device 3 is arranged at the end part of the fan main shaft 5, acquires detection data through the scanning device, wirelessly transmits the detection data to the operating end of the notebook computer 4 after data processing, and completes in-service detection work of the main shaft through remote control of the notebook computer 4.
The support 31 comprises an annular track 311 and three supporting legs 312, the annular track 311 is of a hollow structure, and the side surface of the inner ring is provided with a track matched with the specification of the rubber wheel 323; the three supporting legs 312 are equidistantly distributed around the annular track 311, and are fixed on the outer side of the annular track 311 in a welding mode to form an equilateral triangle arrangement, so that stable support is provided for the support 31.
The support leg 312 comprises a magnetic switch 3121, a magnetic base 3122, a knurled flat head screw 3123, a circular ring support arm 3124 and a column support rod 3125, wherein the disk-shaped magnetic base 3122 is arranged at the lower part of the column support rod 3125, the knob-type magnetic switch 3121 is arranged at the side surface of the magnetic base 3122, and the application and release of magnetic force in the magnetic base 3122 can be controlled by rotating the magnetic switch 3121, so as to achieve the purpose of installing and fixing the detection device 3; the upper end of the first column support rod 3125 passes through the circular ring support arm 3124 fixed on the circular ring track 311 to complete the assembly of the support leg 312; the side of the circular ring support arm 3124 is provided with a knurled flat head screw 3123, the height of the detection device can be adjusted by adjusting the leakage length of the upright post strut 3125, and the knurled flat head screw 3123 is screwed to fix the upright post strut 3125 after the device height is determined.
The rotating bracket 32 comprises a cross body 321, a servo motor 322, a rubber wheel 323 and a straight rack 324, the main structure of the rotating bracket is the cross body 321, the tail ends of four support arms of the cross body 321 are respectively provided with one servo motor 322, and the rubber wheel 323 is additionally arranged at the front ends of the four servo motors 322; the outer side of the rubber wheel 323 is processed into an inclined plane, the specification and the size of the inclined plane are matched with those of the inner rail of the annular rail 311, and the rubber wheel 323 can freely rotate in the annular rail 311; the servo motor 322 drives the rubber wheel 323 to rotate, so that circumferential movement of the rotating bracket 32 is realized; the cross 321 has a groove on the upper surface of one of the support arms, and a spur rack 324 is mounted in the groove for matching with the scanning device, and the rack is matched with a spur gear in the scanning device in specification and provides a moving track for the scanning device.
The detection module 33 comprises five sub-modules, namely a phased array ultrasonic processor 331, a controller 333, a battery 334, an oil pump 335 and a scanning device 337, wherein the sub-modules are fixedly arranged on the rotating support 32, the phased array ultrasonic processor 331, the controller 333, the battery 334 and the oil pump 335 are arranged on the rotating support 32 in a straight shape, are connected together through a control cable 332 and are uniformly controlled by the controller 333, the battery 334 supplies power for the detection device 3, the phased array ultrasonic processor 331 is responsible for collecting and processing detection data, and the oil pump 335 pumps oil to a phased array probe part through an oil delivery pipe 336 to serve as a phased array probe couplant; three indicator lamps are arranged on the surface of the phased array ultrasonic processor 331 and used for displaying the state of the processor; the surface of the controller 333 is provided with a button switch for controlling the start and stop of the system; the surface of the battery 334 is provided with a liquid crystal display screen for displaying the electric quantity of the battery.
The scanning device 337 comprises a phased array probe 3371, a driving motor 3373 and a second upright post rod 3378, and the scanning device 337 is powered by the driving motor 3373; the front end of the middle shaft of the driving motor 3373 is provided with a straight-tooth gear 3374, the straight-tooth gear 3374 is meshed with a straight-tooth rack 324 on the cross 321, and the driving motor 3373 drives the straight-tooth gear 3374 to roll back and forth on the straight-tooth rack 324, so that the scanning device 337 can move back and forth; the phased array probe 3371 is fixed at the lower end of the second upright post support rod 3378, the upper end of the second upright post support rod 3378 penetrates through a positioning hole of the shell of the driving motor 3373, and the phased array probe 3371 is connected with the driving motor 3373; the phased array probe 3371 is connected with the phased array ultrasonic processor 331 through a probe line 3372, and the phased array ultrasonic processor 331 controls the phased array probe 3371 to collect detection data and process the detection data, and finally, the detection data is transmitted to the operating end of the notebook computer 4 for display through the controller 333.
The second upright post support rod 3378 is divided into two sections, the diameter of the lower end section is smaller, the lower end section is inserted into the upper end support rod, a spring is arranged between the two sections of support rods, so that a pressing force can be provided for the phased array probe 3371, good contact between the phased array probe 3371 and the end face of a main shaft of a fan is ensured, and the position of the phased array probe 3371 can be adjusted by adjusting the extension length of the second upright post support rod 3378 so as to be suitable for main shaft detection with different specifications;
the second upright post support rod 3378 is provided with two oil pipe limiting blocks 3377 made of rubber, and the oil pipe limiting blocks 3377 can move on the second upright post support rod 3378 and are used for fixing the oil conveying pipe 336, so that engine oil can be accurately thrown near the phased array probe 3371 to be used as a coupling agent for detecting the phased array probe 3371.
The main shaft in-service detection system of the wind generating set comprises the following assembly steps:
1) According to the outline dimension of the solar panel 1, processing a mounting hole on the surface of a hub of the wind generating set, mounting and fixing the solar panel 1, and additionally arranging a light-transmitting protective housing on the surface;
2) Assembling all parts of the detection device 3, placing the detection device 3 on the end face of the fan main shaft 5, ensuring that the center of the detection device 3 is positioned on the center line of the fan main shaft 5, poking the magnetic switch 3121 one by one to enable the magnetic base 3122 to have magnetism, and fixing the detection device 3 on the end part of the fan main shaft 5;
3) Adjusting the position of the annular track 311 to enable the end face of the rotating bracket 32 and the end face of the fan main shaft 5 to be parallel, screwing the knurled flat head screw one 3123 one by one, and fixing the upright post support rod one 3125 in the annular support arm 3124;
4) Pushing and pulling the second upright post support rod 3378, and adjusting the position of the phased array probe 3371 to ensure that the phased array probe 3371 is in good contact with the end surface of the main shaft 5 of the fan and the applied pressure is moderate;
5) Tightening the knurled flat head screw II 3376 to fix the upright post strut II 3378;
6) One end of the power transmission cable 2 is inserted into a connecting port of the solar cell panel 1, the other end of the power transmission cable is inserted into a battery 334 interface, the detection system is electrified, a surface switch button of the controller 333 is pressed, and the detection system is started.
When the in-service detection system of the main shaft of the wind generating set is used for detecting flaw detection, the detection method comprises the following steps:
1) Opening the notebook computer 4, and after the connection is successful, operating the notebook computer 4 by a detector to remotely control the detector 3 to detect through the wireless connection detector 3;
2) The four servo motors positioned at the end part of the rotating support 32 are synchronously started, the rotating support 32 drives the scanning device 337 to move along the circumference, and meanwhile, the oil pump 335 pumps the engine oil to the position of the phased array probe 3371 through the oil delivery pipe 336;
3) The phased array probe 3371 rotates synchronously and performs phased array ultrasonic detection on the fan main shaft 5;
4) Data are synchronously collected and transmitted to the phased array ultrasonic processor 331 through the probe line 3372, and finally, real-time data transmission is carried out between the controller 333 and the operating end of the notebook computer 4;
5) The notebook computer 4 processes and stores the detection data and displays the detection result;
6) After the detection is completed, the operation end of the notebook computer 4 issues a sleep instruction of the detection system, and when the detection is required, the detection device 3 is connected again to repeat the detection work.
The invention has the following characteristics:
1. the invention is powered by the solar panel, the detection device is arranged at the end part of the main shaft of the fan, the in-service detection work of the main shaft is completed through remote control of the notebook computer, and the system is a set of independent system which is self-sufficient, does not need to arrange a power line in the hub of the fan, can be synchronously arranged when the wind generating set is constructed, and is convenient to install and use;
2. the invention is in a disc shape as a whole and is suitable for detecting the circular end face of the shaft forging. The detection module is fixedly arranged on the rotating support, the rotating support is connected with the annular track through the rubber wheel, the rotating support can freely rotate in the support, the detection module is driven to finish circumferential scanning of the end part of the main shaft of the fan, and the running state of the fan has no influence on detection implementation;
3. the landing legs are welded on the annular track at equal intervals, have a triangular stable structure, and can be matched with the switch type magnetic seat to quickly and reliably fix the detection device and also can be quickly dismantled;
4. according to the invention, the rotating bracket and the circular ring support are assembled together through the rubber wheels and the track grooves which are matched in structure, and meanwhile, the rotating bracket is controlled to move through the servo motor, so that the circumferential scanning of the phased array probe is accurately realized, the structure is convenient to connect, the installation is firm, and the rotation is stable;
5. the invention adopts the combination structure of the straight rack and the straight gear meshing, conveniently and rapidly realizes the forward and backward movement of the scanning device under the action of the driving motor, can rapidly realize the accurate positioning of the phased array probe, and has simple structure and convenient use;
6. the upright post supporting rod and the knurled flat head screw are matched for use, so that the structure is simple, the adjustment is convenient, and the height of the supporting seat and the position of the probe can be quickly adjusted;
7. according to the couplant pumping structure, the oil pump and the scanning device are both fixed on the rotating support, and the oil serving as the couplant is pumped to the position of the phased array probe through the oil delivery pipe, so that the positioning and arrangement of the oil delivery pipe are facilitated.
8. The detection module is composed of different functional sub-modules, and the detection modules are connected by adopting control cables, so that the detection module is convenient to disassemble and assemble, and maintenance is facilitated only by replacing the problem module during maintenance.
According to the invention, the solar panel is used for supplying power, the battery module is arranged for storing electric quantity, and a power line is not required to be arranged in the fan hub, so that the wind turbine generator set can be synchronously installed during construction, and the use is convenient; the wireless transmission function is realized, a detector only needs to remotely control at the notebook computer end, the operation of the fan hub part of a person on the high altitude is not needed, the safety risk is avoided, and the detection and the use are convenient; the modularized design thought is adopted, the structural layout is reasonable, the module is convenient to disassemble and assemble, the maintenance is simple and convenient, and the use cost is low; the mechanical automatic scanning device can realize uniform movement of the probe and automatic supply of the couplant, reduces interference of human factors, improves detection reliability and repeatability, and has high detection speed and high precision; the solar cell panel is arranged on the outer surface of the fan hub, the detection device is arranged at the end part of the main shaft and synchronously rotates with the hub, the relative position is static, the in-service detection can be realized after the detection device is arranged, and the running state of the fan has no influence on the detection implementation; through remote control, the fan main shaft can be detected at any time, so that defects can be found in time, and meanwhile, the existing defects can be monitored in operation. The detection system has the function of automatic data analysis, the detection data of the main shaft in the past are automatically analyzed and compared, and the defect judgment is visual, qualitative and quantitative and accurate; the invention is suitable for in-service detection of fan spindles with different types and diameters, and can implement detection only by adjusting the height of the support seat and the position of the probe according to the size of the spindle, thereby having good process applicability and strong universality.
The above-described embodiments of the invention are intended to be examples only, and not to be limiting, and all changes that come within the scope of the invention or equivalents thereto are intended to be embraced thereby.
Claims (10)
1. The utility model provides a wind generating set main shaft detection system in service which characterized in that: the solar energy detection device comprises a solar cell panel (1), a power transmission cable (2), a detection device (3) and a notebook computer (4), wherein the solar cell panel (1) generates electric energy, and the electric energy is transmitted to a battery module of the detection device (3) for storage through the power transmission cable (2) to supply power for the detection device (3); the detection device (3) is integrally disc-shaped and comprises an outermost annular support (31), a cross-shaped rotating support (32) and a detection module (33), four rubber wheels (323) are arranged at the end part of the rotating support (32), and the rubber wheels (323) are clamped into grooves of an annular track (311) at the inner side of the support (31) so that the rotating support (32) and the support (31) are installed together; each part of the detection module (33) is arranged on the rotating bracket (32), and the rotating bracket (32) can freely rotate in the support (31) to drive the detection module (33) to finish circumferential scanning of the end part of the fan main shaft; the detection device (3) is arranged at the end part of the fan spindle (5), the scanning device (337) is used for collecting detection data, the detection data are transmitted to the operating end of the notebook computer (4) in a wireless mode after being processed, and the in-service detection work of the spindle is completed through remote control of the notebook computer (4).
2. The wind turbine main shaft in-service inspection system of claim 1, wherein: the support (31) comprises an annular track (311) and three supporting legs (312), the annular track (311) is of a hollow structure, and the side surface of the inner ring is provided with a track matched with the specification of the rubber wheel (323); the three supporting legs (312) are equidistantly distributed around the annular track (311) and fixed on the outer side of the annular track (311) in a welding mode.
3. The wind turbine main shaft in-service inspection system of claim 2, wherein: the support leg (312) comprises a magnetic switch (3121), a magnetic base (3122), a knurled flat head screw I (3123), a circular ring support arm (3124) and a column support rod I (3125), wherein the lower part of the column support rod I (3125) is provided with a disc-shaped magnetic base (3122), the side surface of the magnetic base (3122) is provided with a knob-type magnetic switch (3121), and the application and release of magnetic force in the magnetic base (3122) can be controlled by rotating the magnetic switch (3121); the upper end of the first upright post supporting rod (3125) passes through the circular ring supporting arm (3124) fixed on the circular ring track (311) to complete the assembly of the supporting leg (312); the side of the circular ring support arm (3124) is provided with a knurled flat head screw I (3123), the height of the detection device (3) can be adjusted by adjusting the leakage length of the upright post support rod I (3125), and the knurled flat head screw I (3123) is screwed to fix the upright post support rod I (3125) after the device height is determined.
4. The wind turbine main shaft in-service inspection system of claim 1, wherein: the rotating support (32) comprises a cross body (321), servo motors (322), rubber wheels (323) and straight racks (324), the main structure of the rotating support is the cross body (321), one servo motor (322) is arranged at the tail ends of four support arms of the cross body (321), and the rubber wheels (323) are additionally arranged at the front ends of the four servo motors (322); the outer side of the rubber wheel (323) is processed into an inclined plane, the specification and the size of the inclined plane are matched with those of the inner track of the annular track (311), and the rubber wheel (323) can freely rotate in the annular track (311); the servo motor (322) drives the rubber wheel (323) to rotate, so that the circumferential movement of the rotating bracket (32) is realized; one of the support arms of the cross body (321) is provided with a groove, and a straight rack (324) is arranged in the groove and is used for being matched with the scanning device (337).
5. The wind turbine main shaft in-service inspection system of claim 1, wherein: the detection module (33) comprises five sub-modules, namely a phased array ultrasonic processor (331), a controller (333), a battery (334), an oil pump (335) and a scanning device (337), wherein the sub-modules are fixedly arranged on a rotating bracket (32), the phased array ultrasonic processor (331), the controller (333), the battery (334) and the oil pump (335) are arranged on the rotating bracket (32) in a straight shape and are connected together through a control cable (332), the controller (333) uniformly controls the battery (334) to supply power for the detection device (3), the phased array ultrasonic processor (331) is responsible for collecting and processing detection data, and the oil pump (335) pumps oil to a phased array probe (3371) through an oil delivery pipe (336) to serve as a phased array probe coupling agent; three indicator lamps are arranged on the surface of the phased array ultrasonic processor (331) and used for displaying the state of the processor; the surface of the controller (333) is provided with a button switch for controlling the start and stop of the system; the surface of the battery (334) is provided with a liquid crystal display screen for displaying the electric quantity of the battery.
6. The wind turbine main shaft in-service inspection system of claim 5, wherein: the scanning device (337) comprises a phased array probe (3371), a driving motor (3373) and a column strut II (3378), and the scanning device (337) is powered by the driving motor (3373); the front end of a center shaft of the driving motor (3373) is provided with a straight-tooth gear (3374), the straight-tooth gear (3374) is meshed with a straight-tooth rack (324) on the cross body (321), and the driving motor (3373) drives the straight-tooth gear (3374) to roll back and forth on the straight-tooth rack (324), so that the scanning device (337) can move back and forth; the phased array probe (3371) is fixed at the lower end of a second upright post supporting rod (3378), the upper end of the second upright post supporting rod (3378) penetrates through a positioning hole of a shell of the driving motor (3373), and the phased array probe (3371) is connected with the driving motor (3373); the phased array probe (3371) is connected with the phased array ultrasonic processor (331) through a probe wire (3372), the phased array ultrasonic processor (331) controls the phased array probe (3371) to collect detection data and process the detection data, and finally the detection data are transmitted to the operating end of the notebook computer (4) through the controller (333) to be displayed.
7. The wind turbine main shaft in-service inspection system of claim 6, wherein: the stand post branch two (3378) is divided into two sections, the diameter of the lower end section is smaller, the stand post branch two sections are inserted into the upper end branch, a spring is arranged between the two sections of branch rods, the phased array probe (3371) can be provided with a pressing force, the phased array probe (3371) is ensured to be in good contact with the end face of a main shaft of a fan, and the position of the phased array probe (3371) can be adjusted by adjusting the extending length of the stand post branch two (3378) so as to be suitable for main shaft detection with different specifications.
8. The wind turbine main shaft in-service inspection system of claim 6, wherein: two oil pipe limiting blocks (3377) made of rubber are arranged on the second upright post supporting rod (3378), the oil pipe limiting blocks (3377) can move on the second upright post supporting rod (3378) and are used for fixing an oil conveying pipe (336), so that engine oil can be accurately thrown near the phased array probe (3371) to serve as a coupling agent for detecting the phased array probe (3371).
9. A method of assembling an in-service inspection system for a wind turbine generator system main shaft as claimed in any one of claims 1 to 8, wherein: the assembly steps are as follows:
1) According to the overall dimension of the solar panel (1), processing a mounting hole on the surface of a hub of the wind generating set, mounting and fixing the solar panel (1), and additionally arranging a light-transmitting protective housing on the surface;
2) Assembling all parts of the detection device (3), placing the detection device (3) on the end face of the fan main shaft (5), ensuring that the center of the detection device (3) is positioned on the central line of the fan main shaft (5), poking the magnetic switch (3121) one by one to enable the magnetic base (3122) to have magnetism, and fixing the detection device (3) on the end part of the fan main shaft (5);
3) Adjusting the position of the annular track (311) to enable the end face of the rotating bracket (32) and the end face of the fan main shaft (5) to be parallel, screwing the knurled flat head screws (3123) one by one, and fixing the upright post support rod (3125) in the annular support arm (3124);
4) Push-pull column support rod II (3378), adjust the position of the phased array probe (3371), make the phased array probe (3371) contact with end surface of the main shaft (5) of the blower well, and exert the moderate pressure;
5) Screwing the knurled flat head screw II (3376) to fix the upright post strut II (3378);
6) One end of a power transmission cable (2) is inserted into a connecting port of the solar cell panel (1), the other end of the power transmission cable is inserted into a battery (334) interface, the detection system is electrified, a surface switch button of the controller (333) is pressed, and the detection system is started.
10. A detection method of a main shaft in-service detection system of a wind generating set is characterized by comprising the following steps of: an in-service detection of a main shaft of a wind generating set by using the detection system as claimed in any one of claims 1 to 8, comprising the following steps:
1) Opening the notebook computer (4) and connecting the detection device (3) by wireless;
2) Four servo motors (322) positioned at the end part of the rotating support (32) are synchronously started, the rotating support (32) drives the scanning device (337) to move along the circle, and meanwhile, the oil pump (335) pumps oil to the position of the phased array probe (3371) through the oil delivery pipe (336);
3) The phased array probe (3371) synchronously rotates and performs phased array ultrasonic detection on the fan main shaft (5);
4) Data are synchronously collected and transmitted to a phased array ultrasonic processor (331) through a probe wire (3372), and finally are transmitted to an operating end of a notebook computer (4) in real time through a controller (333);
5) The notebook computer (4) processes and stores the detection data and displays the detection result;
6) After the detection is finished, the operation end of the notebook computer (4) issues a sleep instruction of the detection system, and when the detection is needed, the detection device (3) is connected again to repeat the detection work.
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| CN202211624264.5A CN116104711A (en) | 2022-12-15 | 2022-12-15 | In-service detection system and detection method for main shaft of wind generating set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117929532A (en) * | 2024-03-21 | 2024-04-26 | 巴彦淖尔京能清洁能源电力有限公司 | Large-scale aerogenerator main shaft crack detection device based on ultrasonic wave |
| CN117949535A (en) * | 2024-03-27 | 2024-04-30 | 友铂空天动力(深圳)有限公司 | Ultrasonic detection device and method for fan spindle |
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2022
- 2022-12-15 CN CN202211624264.5A patent/CN116104711A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117929532A (en) * | 2024-03-21 | 2024-04-26 | 巴彦淖尔京能清洁能源电力有限公司 | Large-scale aerogenerator main shaft crack detection device based on ultrasonic wave |
| CN117929532B (en) * | 2024-03-21 | 2024-06-07 | 巴彦淖尔京能清洁能源电力有限公司 | Large-scale aerogenerator main shaft crack detection device based on ultrasonic wave |
| CN117949535A (en) * | 2024-03-27 | 2024-04-30 | 友铂空天动力(深圳)有限公司 | Ultrasonic detection device and method for fan spindle |
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