CN203616120U - Fault diagnosis experiment platform based on wind power gearbox working condition simulation - Google Patents
Fault diagnosis experiment platform based on wind power gearbox working condition simulation Download PDFInfo
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Abstract
Provided is a fault diagnosis experiment platform based on wind power gearbox working condition simulation. A driving motor is installed at one end of a base rack. A gearbox transmission device comprises a second-level planetary speed reducing gearbox, a second-level planetary speed increasing gearbox and a single-level parallel shaft gearbox. A high-speed shaft of the second-level planetary speed reducing gearbox is in transmission connection with an output shaft of the driving motor. A low-speed shaft of the second-level planetary speed reducing gearbox and a low-speed shaft of the second-level planetary speed increasing gearbox are connected through a diaphragm coupling. A high-speed shaft of the second-level planetary speed increasing gearbox is connected with a low-speed shaft of the single-level parallel shaft gearbox through a coupling. One end of a torque speed instrument is connected with a high-speed shaft of the single-level parallel shaft gearbox through a coupling and the other end of the torque speed instrument is connected with a rotating shaft of a load simulation motor. A working condition simulation loading module comprises an axial hydraulic cylinder bearing, an axial hydraulic loading cylinder, a radial hydraulic cylinder bearing, a radial hydraulic loading cylinder and an eccentric block vibration exciter. The fault diagnosis experiment platform based on wind power gearbox working condition simulation can effectively simulate the working condition of a wind power gearbox and is reliable in fault information data.
Description
Technical field
The utility model relates to a kind of fault diagnostic test platform of gear case Work condition analogue, especially a kind of fault diagnostic test platform based on wind turbine gearbox Work condition analogue.
Background technology
Wind turbine gearbox is for transmitting the gearing of mechanical energy between fan blade and generator, point slow-speed of revolution mechanical energy of impeller input is converted into the high rotating speed mechanical energy for generator generating by it, because wind-powered electricity generation unit is generally arranged on island, sea, the field that the wind resources such as desert are abundant, and apart from ground or tens meters, sea rice even up to a hundred, therefore its maintenance work inconvenience and maintenance cost are high, and wind turbine gearbox is compared with general industry gear case, it is subject to irregular, powerful formation wind action, the dynamic load bearing is very high, therefore can effectively find in time at the early stage of fault appearance the real-time state monitoring of carrying out in its operational process and mechanical fault diagnosis, and take corresponding measure, avoid causing gear case further to damage and cause more serious loss.
Traditional rotary machinery fault diagnosis test unit is often only focused on the simulation to mechanical equipment fault source, as a certain gear of gear case carried out to tooth destruction or bearing roller raceway being cut, take the fault-signal signal to noise ratio (S/N ratio) of aforesaid way simulation higher, only need can carry out the judgement of fault diagnosis as Fast Fourier Transform (FFT) by comparatively simple signal processing method, but wind turbine gearbox long-time running is being impacted under the operating mode of variable load, and be subject to irregular, powerful formation wind action, the irrelevant disturbing signal of some and gearbox fault is also used as useful signal collection, cause the signal to noise ratio (S/N ratio) of fault-signal very low, cannot analyze it with conventional method for diagnosing faults, often cannot verify by an authentic and valid simulated environment and proposed in theory new method, therefore need a kind of testing table of real working condition simulation to simulate the operating mode of wind turbine gearbox actual motion, a research for the enterprising sector-style electrical gearbox of wind turbine gearbox operating condition platform method for diagnosing faults comparatively really.
Summary of the invention
Cannot effectively simulate wind turbine gearbox operating mode, the poor deficiency of fault information data reliability for what overcome existing rotary machinery fault diagnosis test method, the utility model provides a kind of effective simulation wind turbine gearbox operating mode, the fault information data fault diagnostic test platform based on wind turbine gearbox Work condition analogue reliably.
The technical scheme that the utility model solves its technical matters employing is:
A kind of fault diagnostic test platform based on wind turbine gearbox Work condition analogue, comprise pedestal stand, drive motor, gearbox drive device, Work condition analogue load-on module, moment of torsion rotational speed meters and load simulation motor, described drive motor is arranged on pedestal stand one end, described gearbox drive device comprises secondary planet reduction gear box, secondary planet step-up gear, single-stage parallel-shaft gearbox, the high speed shaft of described secondary planet reduction gear box and the output shaft of described drive motor are in transmission connection, the slow-speed shaft of described secondary planet reduction gear box is connected by diaphragm type coupler with the slow-speed shaft of described secondary planet step-up gear, the high speed shaft of described epicyclic gearbox is connected with the slow-speed shaft of described single-stage parallel-shaft gearbox by shaft coupling, one end of described moment of torsion rotational speed meters is connected with the high speed shaft of described single-stage parallel-shaft gearbox by shaft coupling, the other end of described moment of torsion rotational speed meters is connected with the rotation axis of described load simulation motor by shaft coupling,
Described Work condition analogue load-on module comprises the supporting of axial liquid cylinder pressure, axial hydraulic loads cylinder, the supporting of hydraulic radial cylinder, hydraulic radial loads cylinder, eccentric block vibration exciter, described axial liquid cylinder pressure supporting is arranged on described pedestal stand, described axial hydraulic loads cylinder one end and is hinged in described axial liquid cylinder pressure supporting, the other end is hinged on by a L-type loading blocks on a side lifting earrings of described single-stage parallel-shaft gearbox, described hydraulic radial cylinder supporting is arranged on described pedestal stand, described hydraulic radial loads cylinder one end and is hinged in described hydraulic radial cylinder supporting, the other end is hinged on the opposite side lifting earrings of described single-stage parallel-shaft gearbox, the base of described eccentric block vibration exciter is fixed on described stand, the base of described eccentric block vibration exciter one side and described secondary planet step-up gear is bolted, the base of opposite side and described single-stage parallel-shaft gearbox is bolted.
Further, described fault diagnostic test platform also comprises inertia simulation device, described inertia simulation device comprises clutch coupling, T-shaped support, flywheel shaft, flywheel and flywheel shaft supporting, described T-shaped support is arranged on described pedestal stand, described clutch coupling is arranged on described T-shaped support, described clutch coupling input end is connected with the output shaft of described drive motor, described flywheel shaft supporting is arranged on described pedestal stand, described flywheel head shaft is arranged on the bearing of described flywheel shaft supporting, described clutch coupling output terminal is connected with one end of flywheel head shaft, described flywheel concentric is arranged on described flywheel head shaft, the high speed shaft of described secondary planet reduction gear box is connected by shaft coupling with the other end of described flywheel head shaft.
Further, described inertia simulation device also comprises magnetic powder brake, electromagnetic attracting device, square magnetic steel, described magnetic powder brake is arranged on described pedestal stand, described magnetic powder brake output shaft is provided with the first synchronous pulley, the second synchronous pulley is installed on described flywheel head shaft, described the first synchronous pulley is by Timing Belt and the interlock of the second synchronous pulley, described direction magnet steel is fixed on described flywheel side outer rim, described electromagnetic attracting device is positioned at a side of described flywheel, be arranged on pedestal stand by support, the setting height(from bottom) of described electromagnetic attracting device is consistent with the rotary middle spindle height in described flywheel.
Further again, described eccentric block vibration exciter vibration main body can tilt and be an inclination angle with vertical direction along its horizontal rotating shaft, and inclination angle scope is 0 °～45 °.
Preferably, on described pedestal stand, be processed with two spill vibration isolation grooves that are filled with absorbing material, the first spill vibration isolation groove is between described secondary planet reduction gear box and described secondary planet step-up gear, and the second spill vibration isolation groove is between described single-stage parallel-shaft gearbox and described moment of torsion rotational speed meters.
Preferably, described testing table also comprises data acquisition system (DAS), described data acquisition system (DAS) comprises acceleration transducer, platinum resistance thermometer sensor, displacement transducer, photoelectric encoder, data collecting card, industrial computer, the quantity of described acceleration transducer is three, the first acceleration transducer is installed on described secondary planet step-up gear case top, the second acceleration transducer is installed on the case top of described single-stage parallel-shaft gearbox, the 3rd acceleration transducer is installed on described flywheel shaft supporting top, described photoelectric encoder is installed on described moment of torsion rotational speed meters inside, described platinum resistance thermometer sensor, quantity is two, the first platinum resistance thermometer sensor, is installed in the oil groove of described secondary planet step-up gear, the second platinum resistance thermometer sensor, is installed in the oil groove of described single-stage parallel-shaft gearbox, described displacement transducer is laser displacement sensor, quantity is two, be installed in the same perpendicular of described single-stage parallel-shaft gearbox output shaft, the first displacement transducer is installed on the vertical end of described single-stage parallel-shaft gearbox output shaft, second displacement sensor is installed on the horizontal ends of described single-stage parallel-shaft gearbox output shaft, described acceleration transducer, thermal resistance, displacement transducer is connected with described data collecting card, described data collecting card is connected with described industrial computer.
Described testing table also comprises electric control system, described electric control system comprises three-phase supply rectification module, DC bus, the first frequency-variable controller, the second frequency-variable controller, described three-phase supply rectification module is connected with described DC bus, described DC bus and described the first frequency-variable controller, the second frequency-variable controller connects, described the first frequency-variable controller is connected with described drive motor, described the second frequency-variable controller is connected with described load simulation motor, described the first frequency-variable controller is connected with described industrial computer by industrial field bus with the communication port of the second frequency-variable controller.
Technical conceive of the present utility model is: adopt secondary planet step-up gear and single-stage parallel-shaft gearbox cascade structure simulation wind power gear box structure, realize the tangential impact to driving-chain rotation round by magnetic powder brake, adhesive effect by electromagnetic attracting device square shaped magnet steel realizes the radial impact to turning axle, adopt hydraulic means to complete the axle to gear case, radial loaded, utilize eccentric block vibration exciter to realize the vibration exciting to gear case base, the platform of the true operation of a simulation wind turbine gearbox is provided, research collects the various signals of the wind turbine gearbox machine performance that particularly vibration signal shows under Reality simulation working condition, realize the energy circulation of process of the test by electric sealing technique, warranty test platform is in long-term running status continuously.
The beneficial effects of the utility model are mainly manifested in: (1) by Work condition analogue load-on module can analogue simulation wind turbine gearbox in variable load, the true operating condition of strong gusts of wind; (2) adopt sensor gearing to be carried out to the extraction of fault-signal, for the information fusion mechanism of fault diagnosis provides the platform of a verification experimental verification; (3) adopt electric enclosed construction to carry out cyclic test, only need to be from the energy of external electrical network replenishment system loss, the interference of having avoided generator to generate electricity to electrical network, energy utilization rate is high, simple in structure.
Accompanying drawing explanation
Fig. 1 is that the axle that waits of wind turbine gearbox Work condition analogue testing table is surveyed view.
Fig. 2 is the top view of wind turbine gearbox Work condition analogue testing table.
Fig. 3 is the structural representation of inertia simulation device.
Fig. 4 is the structural representation of Work condition analogue load-on module.
Fig. 5 is the configuration diagram of data acquisition system (DAS).
Fig. 6 is the configuration diagram of electric control system.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
With reference to Fig. 1～Fig. 6, a kind of fault diagnostic test platform based on wind turbine gearbox Work condition analogue, comprise pedestal stand 1, drive motor 2, inertia simulation device 3, gearbox drive device 4, Work condition analogue load-on module 5, moment of torsion rotational speed meters 6, load simulation motor 7, data acquisition system (DAS) 8, electric control system 9, described drive motor 2 is three-phase frequency-conversion speed-regulation motor, the YVF2-112M-4 motor of selecting Southern Part of Anhui Province motor company to produce, rated power 4kW, nominal torque 26.5Nm, rated speed 1500rpm, frequency conversion scope is 5～100Hz, described drive motor 2 is as the drive source of testing table main drive chain, be arranged on pedestal stand 1 one end, machine operation is at forward motoring condition,
Described inertia simulation device 3 comprises clutch coupling 3-1, T-shaped support 3-2, flywheel shaft 3-3, flywheel 3-4, flywheel shaft supporting 3-5, magnetic powder brake 3-6, electromagnetic attracting device 3-7 and square magnetic steel 3-8, described T-shaped support 3-2 is arranged on described pedestal stand 1, described clutch coupling 3-1 selects electromagnetic clutch, adopt 24V direct current supply, output power is 20W, static friction torque 25Nm, kinetic friction torque 20Nm, described clutch coupling 3-1 is arranged on described T-shaped support 3-2 by 3 threaded holes that are positioned at 120 ° of equal angles intervals of same circumference, described clutch coupling 3-1 input end is connected by flat key with the output shaft of described drive motor 2, described flywheel shaft supporting 3-5 is arranged on described pedestal stand 1, described flywheel head shaft 3-3 is arranged on the bearing of described flywheel shaft supporting 3-5, described clutch coupling 3-1 output terminal is connected by plum coupling with one end of flywheel head shaft 3-3, described flywheel 3-4 is arranged on described flywheel head shaft 3-3 by flat key concentric, described magnetic powder brake 3-6 is arranged on described pedestal stand 1, described magnetic powder brake 3-6 output shaft is provided with the first synchronous pulley, the second synchronous pulley is installed on described flywheel head shaft, described the first synchronous pulley is by Timing Belt and the interlock of the second synchronous pulley, described direction magnet steel 3-8 is fixed on described flywheel 3-4 side outer rim by bonding agent, described electromagnetic attracting device 3-7 is positioned at a side of described flywheel, be arranged on pedestal stand 1 by support, the setting height(from bottom) of described electromagnetic attracting device 3-7 is with consistent in the height of described flywheel 3-4 rotary middle spindle.
Described gearbox drive device 4 comprises secondary planet reduction gear box 4-1, secondary planet step-up gear 4-2, single-stage parallel-shaft gearbox 4-3, the NGW planetary gear reduction box that described secondary planet reduction gear box 4-1 selects Nanjing high-speed gear box company to produce, ratio of gear code name is 12, seat No. is 4, nominal ratio of gear is 40, nominal power 8.4kW, the high speed shaft of described secondary planet reduction gear box 4-1 is connected by diaphragm type coupler with the other end of described flywheel head shaft 3-3, described secondary planet step-up gear 4-2 selects model consistent with described secondary planet reduction gear box 4-1, above-mentioned two epicyclic gearboxes adopt back-to-back transmission test form, the slow-speed shaft that is described secondary planet reduction gear box 4-1 is connected by diaphragm type coupler with the slow-speed shaft of described secondary planet step-up gear 4-2, the ZDY type cylindrical gear reducer that described single-stage parallel-shaft gearbox 4-3 selects Jiangsu Guo Mao group to produce, line call-out " specification is 80, nominal ratio of gear is 2, nominal power is 21kW, the high speed shaft of described secondary planet step-up gear 4-2 is connected with the slow-speed shaft of described single-stage parallel-shaft gearbox 4-3 by diaphragm type coupler, the direct-connected torque rotary speed sensor of JN338A type that described moment of torsion rotational speed meters 6 selects Beijing San Jing company to produce, transducer range is 10Nm, sensor signal is output as square-wave signal, amplitude is 5V, zero torque frequency is output as 10KHz, forward torque full scale frequency is output as 15KHz, one end of described moment of torsion rotational speed meters 6 is connected with the high speed shaft of described single-stage parallel-shaft gearbox 4-3 by plum coupling, the other end of described moment of torsion rotational speed meters 6 is connected with the rotation axis of described load simulation motor 7 by plum coupling, described load simulation motor 7 selects model consistent with described drive motor 2 models, described load simulation motor 7 is arranged on the other end of described benchmark stand 1, be operated in regenerative braking generating state, on described pedestal stand 1, be processed with two spill vibration isolation grooves, the first spill vibration isolation groove 1-1 is between described secondary planet reduction gear box 4-1 and described secondary planet step-up gear 4-2, the spacing distance of the first spill vibration isolation groove 1-1 and described secondary planet step-up gear 4-2 mounting edge is 10cm, the second spill vibration isolation groove 1-2 is between described single-stage parallel-shaft gearbox 4-3 and described moment of torsion rotational speed meters 6, the spacing distance of the second spill vibration isolation groove 1-2 and described single-stage parallel-shaft gearbox 4-3 mounting edge is 10cm, the section of described spill vibration isolation groove is the rectangle of a 10cm*5cm, in groove, be all filled with absorbing damping material, article two, spill vibration isolation groove is by described secondary planet step-up gear 4-2 and described single-stage parallel-shaft gearbox 4-3 isolation, make its certain vibration producing in the time that Reality simulation operating mode is moved can not have influence on other and be arranged on the device on benchmark stand 1, and then the stable operation of warranty test platform.
Described Work condition analogue load-on module 5 comprises axial liquid cylinder pressure supporting 5-1, axial hydraulic loads cylinder 5-2, hydraulic radial cylinder supporting 5-3, hydraulic radial loads cylinder 5-4, eccentric block vibration exciter 5-5, described axial liquid cylinder pressure supporting 5-1 is arranged on described pedestal stand 1, it is that Bosch Li Leshi produces CDL1 type single-piston-rod hydraulic cylinder that described axial hydraulic loads cylinder 5-2, throw of poston is 30mm, head and afterbody all adopt circular flange, for hinged installation, described axial hydraulic loads cylinder 5-2 one end and is hinged on described axial liquid cylinder pressure supporting 5-1, the other end is hinged on by a L-type loading blocks 5-6 on a side lifting earrings of described single-stage parallel-shaft gearbox 4-3, described hydraulic radial cylinder supporting 5-3 is arranged on described pedestal stand 1, it is consistent with axial hydraulic loading cylinder 5-2 that described hydraulic radial loading cylinder 5-4 chooses model, described hydraulic radial loads cylinder 5-4 one end and is hinged on described hydraulic radial cylinder supporting 5-3, the other end is hinged on the opposite side lifting earrings of described single-stage parallel-shaft gearbox 4-3, carry out the axle to gear case by the throw of poston of controlled loading hydraulic cylinder, radially apply static load, the base of described eccentric block vibration exciter 5-5 is fixed on described pedestal stand 1, the base of described eccentric block vibration exciter 5-5 mono-side and described secondary planet step-up gear 4-2 is bolted, the base of opposite side and described single-stage parallel-shaft gearbox 4-3 is bolted, the vibration main body of described eccentric block vibration exciter 5-5 can tilt and be an inclination angle with vertical direction along its horizontal rotating shaft, the setting range at inclination angle is 0 °～45 °.
Described data acquisition system (DAS) 8 comprises acceleration transducer 8-1, platinum resistance thermometer sensor, 8-2, displacement transducer 8-3, photoelectric encoder 8-4, data collecting card 8-5, industrial computer 8-6, described acceleration transducer 8-1 is, quantity is three, the 3023AH that selects Dytran company of the U.S. to produce, sensitivity is 10mV/g, Frequency Response is 1.5 to 5000Hz, range is 50g, the first acceleration transducer 8-1-1 is installed on described secondary planet step-up gear 4-2 case top by screw thread, the second acceleration transducer 8-1-2 is installed on the case top of described single-stage parallel-shaft gearbox 4-3 by screw thread, the 3rd acceleration transducer 8-1-3 is installed on described flywheel shaft supporting 3-5 top by screw thread, described photoelectric encoder 8-4 is installed on the inside of described moment of torsion rotational speed meters 6, described platinum resistance thermometer sensor, 8-2 selects Pt100 platinum resistance, quantity is two, the first platinum resistance thermometer sensor, 8-2-1 is installed in the oil groove of described secondary planet step-up gear 4-2, the second platinum resistance thermometer sensor, 8-2-2 is installed in the oil groove of described single-stage parallel-shaft gearbox 4-3, described displacement transducer 8-3 is laser displacement sensor, selecting model is the LK-G30 that Japanese Keyemce company produces, measurement range is at 30mm ± 5mm, repeatable accuracy is 0.05 μ m, number of sensors is two, be installed in the same perpendicular of described single-stage parallel-shaft gearbox 4-3 output shaft, the first displacement transducer 8-3-1 is installed on the vertical end 4-3 of described single-stage parallel-shaft gearbox output shaft, beat in the displacement of vertical direction in order to prototype gear case output shaft, second displacement sensor 8-3-2 is installed on the horizontal ends of described single-stage parallel-shaft gearbox 4-3 output shaft, beat in order to the displacement in the horizontal direction of prototype gear case 4-3 output shaft, described data collecting card 8-5 comprises capture card cabinet 8-5-1, resistance measurement capture card 8-5-2, displacement measurement capture card 8-5-3, vibration survey capture card 8-5-4, Digital I/O capture card 8-5-5, all adopt America NI company product, described capture card cabinet 8-5-1 adopts NI cDAQ9184 tetra-scouring machine casees, described capture card cabinet 8-5-1 is connected with described industrial computer 8-6 by usb bus, described resistance measurement capture card 8-5-2 adopts NI9219 capture card, be inserted in the first slot of described capture card cabinet 8-5-1, described the first platinum resistance thermometer sensor, 8-2-2, the second platinum resistance thermometer sensor, 8-2-2 is connected respectively to first of resistance measurement capture card 8-5-2, the second input channel, described displacement measurement capture card 8-5-3 adopts NI9207 capture card, be inserted in described capture card cabinet 8-5-1 the 4th slot, described displacement transducer 8-3 connects respectively first of described displacement measurement capture card 8-5-3, the second input channel, described vibration survey capture card 8-5-4 adopts NI9234 capture card, be inserted in described capture card cabinet the 3rd slot, described acceleration transducer 8-1 respectively with first of described vibration survey capture card 8-5-4, second, the 3rd input channel, described Digital I/O capture card 8-5-5 selects NI9403, be inserted in described capture card cabinet 8-5-1 the 4th slot, described photoelectric encoder 8-4 connects respectively first of described Digital I/O capture card 8-5-5, the second input channel.
Described electric control system 9 comprises three-phase supply rectification module 9-1, DC bus 9-2, the first frequency-variable controller 9-3, the second frequency-variable controller 9-4, described three-phase supply rectification module 9-1 is connected with described DC bus 9-2, described DC bus 9-2 and described the first frequency-variable controller 9-3, the second frequency-variable controller 9-4 connects, described the first frequency-variable controller 9-3 is connected with described drive motor 2, described the second frequency-variable controller 9-4 is connected with described load simulation motor 7, described the first frequency-variable controller is connected with described industrial computer 8-6 by industrial field bus Profibus with the communication port of the second frequency-variable controller.
In the present embodiment, shown in testing table adopt electric enclosed construction, industrial three-phase electricity is rectified into direct current by described three-phase supply rectification module 9-1, energy is stored in DC bus 9-2 with galvanic form, the first frequency-variable controller 9-3 by inner inversion unit by DC inverter to the required three-phase alternating current of drive motor 2, variable frequency control drive motor 2 is operated in forward motoring condition, described drive motor 2 by rotation mechanical energy successively by inertia simulation device 3, gearbox drive device 4, moment of torsion rotational speed meters 6 is delivered to load simulation motor 7, the second frequency-variable controller 9-4 control load simulated machine 7 is operated in feedback dynamic brake state, and the alternating current of its generation is rectified into direct current by inner rectification unit feeds back in DC bus 9-2, because machinery driving efficiency is higher, therefore testing table only need be obtained energy that a small amount of electric energy carrys out bucking-out system running wastage and can be met by three-phase supply rectification module 9-1 the continuous operation of testing table from industrial three-phase electricity.
As the one simulation of the true operating condition of wind turbine gearbox, described drive motor 2 is by the adhesive flywheel driven 3-4 rotation of clutch coupling 3-1 self, motor speed is reduced by 50 times by described secondary planet reduction gear box 4-1, in order to simulation rotatablely moving at the lasting effect apparatus for lower wind generator wind wheel of wind-force, in the time that clutch coupling 3-1 disconnects, drive motor 2 cannot continue to provide in driving, and flywheel 3-4 is because inertia rotates maintenance and progressively slows down, this process is in order to simulate the process that progressively reduces cannot continue to drive wind wheel rotation due to wind-force, magnetic powder brake 3-6 is by simulating the emergency brake situation of wind wheel under emergency to the braking of flywheel head shaft 3-3, electromagnetic attracting device 7 is simulated the impact condition of wind wheel while being subject to side direction wind by the adhesive of square shaped magnet steel 3-8.
Work condition analogue load-on module 5 is in order to simulate to wind power generation gear case the real-time working condition in operational process, axial hydraulic loads cylinder 5-2 and hydraulic radial loading cylinder 5-4 completes the static loading to high-speed rotary part, eccentric block vibration exciter 5-5 simulation wind turbine gearbox is subject to the impact shock of non-directional fitful wind in high-altitude, in the time that eccentric block vibration exciter 5-5 vibration main body is vertical state, simulation wind turbine gearbox is subject to the impact shock of horizontal direction, in the time that eccentric block vibration exciter 5-5 vibration main body tilts at an angle, represent that simulation wind turbine gearbox is subject to impact shock in level and vertical both direction simultaneously, first, the region that the second vibration isolation groove acts on Work condition analogue load-on module 5 is only limited between secondary planet step-up gear 4-2 and single-stage parallel-shaft gearbox 4-3, and do not have influence on the even running of other devices.
Claims (7)
1. the fault diagnostic test platform based on wind turbine gearbox Work condition analogue, it is characterized in that: comprise pedestal stand, drive motor, gearbox drive device, Work condition analogue load-on module, moment of torsion rotational speed meters and load simulation motor, described drive motor is arranged on pedestal stand one end, described gearbox drive device comprises secondary planet reduction gear box, secondary planet step-up gear, single-stage parallel-shaft gearbox, the high speed shaft of described secondary planet reduction gear box and the output shaft of described drive motor are in transmission connection, the slow-speed shaft of described secondary planet reduction gear box is connected by diaphragm type coupler with the slow-speed shaft of described secondary planet step-up gear, the high speed shaft of described epicyclic gearbox is connected with the slow-speed shaft of described single-stage parallel-shaft gearbox by shaft coupling, one end of described moment of torsion rotational speed meters is connected with the high speed shaft of described single-stage parallel-shaft gearbox by shaft coupling, the other end of described moment of torsion rotational speed meters is connected with the rotation axis of described load simulation motor by shaft coupling,
Described Work condition analogue load-on module comprises the supporting of axial liquid cylinder pressure, axial hydraulic loads cylinder, the supporting of hydraulic radial cylinder, hydraulic radial loads cylinder and eccentric block vibration exciter, described axial liquid cylinder pressure supporting is arranged on described pedestal stand, described axial hydraulic loads cylinder one end and is hinged in described axial liquid cylinder pressure supporting, the other end is hinged on by a L-type loading blocks on a side lifting earrings of described single-stage parallel-shaft gearbox, described hydraulic radial cylinder supporting is arranged on described pedestal stand, described hydraulic radial loads cylinder one end and is hinged in described hydraulic radial cylinder supporting, the other end is hinged on the opposite side lifting earrings of described single-stage parallel-shaft gearbox, the base of described eccentric block vibration exciter is fixed on described stand, the base of described eccentric block vibration exciter one side and described secondary planet step-up gear is bolted, the base of opposite side and described single-stage parallel-shaft gearbox is bolted.
2. the fault diagnostic test platform based on wind turbine gearbox Work condition analogue as claimed in claim 1, it is characterized in that: described fault diagnostic test platform also comprises inertia simulation device, described inertia simulation device comprises clutch coupling, T-shaped support, flywheel shaft, flywheel and flywheel shaft supporting, described T-shaped support is arranged on described pedestal stand, described clutch coupling is arranged on described T-shaped support, described clutch coupling input end is connected with the output shaft of described drive motor, described flywheel shaft supporting is arranged on described pedestal stand, described flywheel head shaft is arranged on the bearing of described flywheel shaft supporting, described clutch coupling output terminal is connected with one end of flywheel head shaft, described flywheel concentric is arranged on described flywheel head shaft, the high speed shaft of described secondary planet reduction gear box is connected by shaft coupling with the other end of described flywheel head shaft.
3. the fault diagnostic test platform based on wind turbine gearbox Work condition analogue as claimed in claim 2, it is characterized in that: described inertia simulation device also comprises magnetic powder brake, electromagnetic attracting device and square magnetic steel, described magnetic powder brake is arranged on described pedestal stand, described magnetic powder brake output shaft is provided with the first synchronous pulley, the second synchronous pulley is installed on described flywheel head shaft, described the first synchronous pulley is by Timing Belt and the interlock of the second synchronous pulley, described square magnetic steel is fixed on described flywheel side outer rim, described electromagnetic attracting device is positioned at a side of described flywheel, be arranged on pedestal stand by support, the setting height(from bottom) of described electromagnetic attracting device is consistent with the rotary middle spindle height in described flywheel.
4. the fault diagnostic test platform based on wind turbine gearbox Work condition analogue as described in one of claim 1 ~ 3, is characterized in that: described eccentric block vibration exciter vibration main body tilts and is an inclination angle with vertical direction along its horizontal rotating shaft, and inclination angle scope is 0 ° ~ 45 °.
5. the fault diagnostic test platform based on wind turbine gearbox Work condition analogue as described in one of claim 1 ~ 3, it is characterized in that: on described pedestal stand, be processed with two spill vibration isolation grooves that are filled with absorbing material, the first spill vibration isolation groove is between described secondary planet reduction gear box and described secondary planet step-up gear, and the second spill vibration isolation groove is between described single-stage parallel-shaft gearbox and described moment of torsion rotational speed meters.
6. the fault diagnostic test platform based on wind turbine gearbox Work condition analogue as described in one of claim 1 ~ 3, it is characterized in that: described testing table also comprises data acquisition system (DAS), described data acquisition system (DAS) comprises acceleration transducer, platinum resistance thermometer sensor, displacement transducer, photoelectric encoder, data collecting card and industrial computer, the quantity of described acceleration transducer is three, the first acceleration transducer is installed on described secondary planet step-up gear case top, the second acceleration transducer is installed on the case top of described single-stage parallel-shaft gearbox, the 3rd acceleration transducer is installed on described flywheel shaft supporting top, described photoelectric encoder is installed on described moment of torsion rotational speed meters inside, described platinum resistance thermometer sensor, quantity is two, the first platinum resistance thermometer sensor, is installed in the oil groove of described secondary planet step-up gear, the second platinum resistance thermometer sensor, is installed in the oil groove of described single-stage parallel-shaft gearbox, described displacement transducer is laser displacement sensor, quantity is two, be installed in the same perpendicular of described single-stage parallel-shaft gearbox output shaft, the first displacement transducer is installed on the vertical end of described single-stage parallel-shaft gearbox output shaft, second displacement sensor is installed on the horizontal ends of described single-stage parallel-shaft gearbox output shaft, described acceleration transducer, thermal resistance, displacement transducer is connected with described data collecting card, described data collecting card is connected with described industrial computer.
7. the fault diagnostic test platform based on wind turbine gearbox Work condition analogue as described in one of claim 1 ~ 3, it is characterized in that: described testing table also comprises electric control system, described electric control system comprises three-phase supply rectification module, DC bus, the first frequency-variable controller and the second frequency-variable controller, described three-phase supply rectification module is connected with described DC bus, described DC bus and described the first frequency-variable controller, the second frequency-variable controller connects, described the first frequency-variable controller is connected with described drive motor, described the second frequency-variable controller is connected with described load simulation motor, described the first frequency-variable controller is connected with industrial computer by industrial field bus with the communication port of the second frequency-variable controller.
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