CN108731957B - Variable pitch system test device and scheme - Google Patents
Variable pitch system test device and scheme Download PDFInfo
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- CN108731957B CN108731957B CN201810256971.0A CN201810256971A CN108731957B CN 108731957 B CN108731957 B CN 108731957B CN 201810256971 A CN201810256971 A CN 201810256971A CN 108731957 B CN108731957 B CN 108731957B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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Abstract
The invention discloses a variable pitch system test device and a variable pitch system test scheme. This change oar system test device includes the fixed plate, and install the magnetic powder brake on the fixed plate, the speed increaser, tension control appearance and gear, fixed plate detachably installs on changing the oar bearing, the gear, speed increaser and magnetic powder brake connect gradually, gear output shaft connects the speed increaser input, magnetic powder brake is connected to the speed increaser output, the gear can mesh with the big tooth face that changes the oar bearing, be used for transmission rotational speed and moment of torsion, tension control appearance sets up on magnetic powder brake, a braking moment for controlling magnetic powder brake. The invention also discloses a test scheme for the variable pitch system test device. The variable pitch system test device and the variable pitch system test scheme can reduce the installation and test height, reduce high-altitude operation, ensure personnel safety, have simple structure, small occupied area and good expansibility, can reduce the test cost and are suitable for variable pitch system tests of various types.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a variable pitch system test device and a variable pitch system test scheme.
Background
The variable pitch system is one of core parts of a control system of the wind turbine generator, plays an important role in safe, stable and efficient operation of the wind turbine generator, is arranged on a hub and comprises a variable pitch bearing, a variable pitch drive, a variable pitch control cabinet and a battery cabinet, wherein the variable pitch drive comprises a variable pitch motor and a variable pitch reduction box, and the variable pitch system can simultaneously adjust the variable pitch angles of three blades of the generator set and can also independently adjust the variable pitch angle of each blade. The test of the wind turbine generator pitch system is to test the driving capability of a pitch motor and the bearing capability of the pitch bearing by simulating the rotary load of blades on the pitch bearing, so that the performance of the pitch system is evaluated, and whether the pitch system can finish the feathering action is determined.
FIG. 6 is a schematic structural diagram illustrating a test apparatus for a pitch system of a wind turbine generator in accordance with the prior art. As shown in FIG. 6, the test equipment for the pitch system of the wind turbine generator set in the prior art comprises a base 11, a cylindrical arm 12, a steel wire rope 13, a balancing weight 14 and a fastener, wherein the working load in the test process is provided by matching the cylindrical arm 12 and the balancing weight 14. Specifically, before a test, the hub 1 is mounted on the base 11, the pitch bearing 2 on the hub 1 is connected with the cylindrical arm 12, then the steel wire rope 13 is wound on the cylindrical arm 12, the other end of the steel wire rope 13 is connected with the balancing weight 14, the electrical equipment is connected, and the test work is started. Firstly, a variable pitch motor is started to drive a variable pitch bearing 2 and a cylindrical arm 12 to synchronously rotate, further, a balancing weight 14 is lifted, load variable pitch action is completed, in the test process, different numbers of balancing weights 14 are loaded on one end of a steel wire rope 13, rotation tests of the variable pitch bearing 2 under different rotation loads are carried out, corresponding test data are observed and recorded, and a variable pitch system test is completed. The test equipment for the pitch system in the prior art and the test method used by the test equipment for the pitch system in the prior art can be completed only by matching at least four workers, the test equipment is heavy and has large workload of installation and disassembly, and meanwhile, due to the limitation of the size of the counterweight block, the test equipment needs to be operated at a position three meters high away from the ground, so that danger exists.
Therefore, how to realize the pitch system test, the safety and the convenience of the test work can be ensured, the workload of workers is reduced, the test cost is reduced, and the technical problem to be solved by technical personnel in the field is solved.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a pitch system testing device and a pitch system testing scheme which are safe and convenient to use and operate.
Therefore, the invention discloses a variable pitch system testing device. This become oar system test device installs in the wheel hub that becomes the oar system and on becoming the oar bearing, including the fixed plate and install magnetic powder brake, speed increaser, tension control appearance and gear on the fixed plate, wherein:
the fixing plate is detachably mounted on the variable-pitch bearing;
the gear, the speed increaser and the magnetic powder brake are sequentially connected, the output end of the gear is connected with the input end of the speed increaser, and the output end of the speed increaser is connected with the magnetic powder brake;
the gear can be meshed with a large tooth surface of the variable pitch bearing and is used for transmitting the rotating speed and the torque;
the tension controller is arranged on the magnetic powder brake and used for controlling the braking torque of the magnetic powder brake.
Further, in the pitch system testing device, the fixing plate is made of a steel plate through cutting and machining.
Further, in the pitch system testing device, the tension controller comprises a PID controller, and the tension controller controls the braking torque output by the magnetic powder brake through the PID controller.
Further, in the pitch system testing device, the pitch system testing device further comprises a heat dissipation system, wherein the heat dissipation system comprises a water tank, a water pump, a heat radiator, a quick-change connector and a connecting piece, and the heat dissipation system is connected with the magnetic powder brake and used for cooling the magnetic powder brake.
In addition, the invention also discloses a test scheme for the test device of the variable pitch system, which comprises the following steps:
hoisting the hub and the variable-pitch bearing to a test position, and after stable placement, hoisting the test device to the position of the variable-pitch bearing;
the testing device is fixedly connected to the variable pitch bearing through the fixing plate;
adjusting the gear to enable the gear to be meshed with a large tooth surface of the variable pitch bearing, wherein the meshing clearance is smaller than or equal to 0.1 mm;
starting a variable pitch motor, driving the variable pitch bearing to rotate, and driving the gear and the input end of the speed increaser to rotate;
the rotating speed of the output end of the speed increaser is increased through the speed increasing action of the speed increaser, and magnetic powder in the magnetic powder brake is promoted to form a loop along magnetic flux;
switching on a direct-current power supply of the magnetic powder brake, so that the magnetic powder brake brakes the input end of the speed increaser to generate a reaction force on the variable-pitch bearing;
controlling the braking torque of the magnetic powder brake through the PID controller of the tension controller, and changing the magnitude of the reaction force born by the variable-pitch bearing;
and observing the running condition of the variable pitch system, and recording the state data of the corresponding variable pitch system under the action of different braking torques.
Further, in the test scheme for the variable pitch system test device, the test device further comprises a step of connecting a water inlet and outlet pipe of the magnetic powder brake with the water tank of the heat dissipation system before the magnetic powder brake is powered on.
The variable propeller system test device and the variable propeller system test method have the advantages that the magnetic powder brake mode is used for replacing the existing mechanical counterweight block brake mode, the mounting height of the hub and the variable propeller bearing can be reduced, so that high-altitude operation is reduced, the personal safety of operators is guaranteed, the device is simple in structure, small in occupied area, safe to use, convenient to operate, capable of reducing the workload of workers and reducing the test cost, good in expansibility and suitable for variable propeller system tests of various types of fans.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a pitch system testing apparatus according to an embodiment of the present invention;
FIG. 2 is an assembled schematic view of the pitch system testing apparatus shown in FIG. 1, further showing a hub and a pitch bearing of the pitch system;
FIG. 3 is an enlarged view of area S of FIG. 2;
FIG. 4 is a schematic view of the hoisting of the pitch system testing apparatus shown in FIG. 2, wherein a hoisting tool of the testing apparatus is also shown;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic structural diagram illustrating a prior art pitch system test rig provided;
FIG. 7 is a flow chart of a test scheme for the pitch system test rig shown in FIG. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a pitch system testing apparatus according to an embodiment of the present invention. FIG. 2 is an assembled schematic view of the pitch system testing apparatus shown in FIG. 1, further showing a hub and a pitch bearing of the pitch system. Fig. 3 is an enlarged view of the region S in fig. 2. As shown in fig. 1, 2 and 3, the pitch system testing device of this embodiment is mounted on a hub 1 and a pitch bearing 2 of a pitch system, and includes a fixing plate 3, and a magnetic powder brake 6, a speed increaser 5, a tension controller 7 and a gear 4 mounted on the fixing plate 3, wherein the fixing plate 3 is detachably mounted on the pitch bearing 2, so that the pitch system testing device is detachably and fixedly connected to the pitch bearing 2 to complete a pitch system test.
Specifically, a gear 4, a speed increaser 5 and a magnetic powder brake 6 are sequentially connected, the gear 4 is arranged on one side of the fixing plate 3, the gear 4 is conveniently meshed with a large tooth surface of the variable pitch bearing 2 during a variable pitch system test, and the gear 4 is meshed with the large tooth surface of the variable pitch bearing 2 to realize transmission of rotating speed and torque; speed increaser 5 and magnetic powder brake 6 set up the opposite side at fixed plate 3, the output shaft of gear 4 is connected with speed increaser 5's input, speed increaser 5's output is connected with magnetic powder brake 6, it drives gear 4 rotation to become the rotation of oar bearing 2 rotation, gear 4 improves the rotational speed that inserts magnetic powder brake 6 through speed increaser 5's acceleration rate effect, output torque in magnetic powder brake 6 is acted on in order to reduce, thereby improve magnetic powder brake 6's life, magnetic powder brake 6 is behind the switch on power supply simultaneously, can brake through speed increaser 5, and then produce the reaction force to becoming oar bearing 2, in order to realize that the simulation blade is to the gyration load of becoming oar bearing 2.
Preferably, the fixing plate 3 may be cut from a steel plate.
Because the magnitude of the torque transmitted by the magnetic powder brake 6 is in a linear relation with the excitation current, the torque value can be changed by changing the excitation current of the magnetic powder brake 6, and then the rotary load acting on the variable pitch bearing 2 is changed. Specifically, a tension controller 7 is arranged on the magnetic powder brake 6, the tension controller 7 is provided with a PID controller (proportional-integral-derivative controller), and the braking torque output by the magnetic powder brake 6 is controlled by setting a torque value for the tension controller 7, so that the rotary load acting on the variable pitch bearing 2 is changed; the tension controller 7 can perform calculation processing through the PID controller by comparing the deviation between the actual output torque of the magnetic powder brake 6 and the set torque, so that the actual output torque of the magnetic powder brake 6 is corrected, and the minimum deviation and the fastest response are realized.
Further, because magnetic powder brake 6 allows to use under the continuous slip, but along with the increase of slip time, it is produced, the heat that accumulates is more, and then lead to the holistic temperature of magnetic powder brake 6 to rise, in order to reduce the inside and surperficial temperature of magnetic powder brake 6, improve magnetic powder brake 6 and inside magnetic life and performance and work efficiency, it still includes cooling system 8 to become oar system test device, cooling system 8 includes the water tank, a water pump, the radiator, quick change coupler and connecting piece, cooling system 8's water tank and magnetic powder brake 6's business turn over water piping connection, cool off magnetic powder brake 6 through the water-cooling mode.
Fig. 4 is a schematic lifting diagram of the pitch system testing device shown in fig. 2, wherein a lifting tool of the testing device is also shown. Fig. 5 is a top view of fig. 4. As shown in fig. 4 and 5, the pitch system testing device of the embodiment can be directly hoisted to the pitch bearing 2 from the ground through the hanger 9 and the hook 10, and meanwhile, the height between the hub 1 and the pitch bearing 2 and the ground can be set according to actual requirements, so that the assembly operation is simple and convenient, and high-altitude operation is not required.
The following specifically describes a test scheme of the pitch system test device used in the embodiment of the present invention.
FIG. 7 is a flow chart of a test scheme for the pitch system test rig shown in FIG. 1. As shown in fig. 7, the test scheme for the pitch system test apparatus of the present embodiment includes the following steps:
step S11, hoisting the hub 1 and the pitch bearing 2 to a test position, and after stable placement, hoisting the test device to the pitch bearing 2;
step S12, fixedly connecting the test device on the pitch bearing 2 through the fixing plate 3;
step S13, adjusting the gear 4 to enable the gear 4 to be meshed with the large tooth surface of the variable pitch bearing 2, wherein the meshing clearance is smaller than or equal to 0.1 mm;
step S14, starting a pitch-variable motor, driving a pitch-variable bearing 2 to rotate, and driving a gear 4 and the input end of a speed increaser 5 to rotate;
step S15, increasing the rotating speed of the output end of the speed increaser 5 by the speed increasing function of the speed increaser 5, and promoting the magnetic powder in the magnetic powder brake 6 to form a loop along the magnetic flux;
step S16, the direct current power supply of the magnetic powder brake 6 is switched on, so that the magnetic powder brake 6 brakes the input end of the speed increaser 5 to generate reaction force to the variable-pitch bearing 2;
step S17, controlling the braking torque of the magnetic powder brake 6 through the PID controller of the tension controller 7, and changing the magnitude of the reaction force born by the variable pitch bearing 2;
and step S18, observing the running condition of the pitch system, and recording the state data of the corresponding pitch system under the action of different braking torques.
Further, the above test scheme further comprises connecting the water inlet and outlet pipes of the magnetic powder brake 6 with the water tank of the heat dissipation system 8 before the magnetic powder brake 6 is powered on.
The variable pitch system test device and the variable pitch system test scheme of the invention utilize the magnetic powder brake 6 to brake instead of the traditional mechanical counterweight block braking mode, can reduce the installation height of the hub 1 and the variable pitch bearing 2, thereby reducing high-altitude operation and ensuring the personal safety of operators, and the device has the advantages of simple structure, small occupied area, safe use, convenient operation, reduction of the workload of workers and reduction of the test cost, has good expansibility and is suitable for variable pitch system tests of various fan types.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides a become oar system test device, installs on the wheel hub of the system of becoming oar and become the oar bearing, its characterized in that includes the fixed plate and installs magnetic powder brake, speed increaser, tension control appearance and gear on the fixed plate, wherein:
the fixing plate is detachably mounted on the variable-pitch bearing;
the gear, the speed increaser and the magnetic powder brake are sequentially connected, the output end of the gear is connected with the input end of the speed increaser, the output end of the speed increaser is connected with the magnetic powder brake, and the speed increaser is used for increasing the rotating speed connected to the magnetic powder brake and reducing the output torque acting on the magnetic powder brake so as to prolong the service life of the magnetic powder brake;
the gear can be meshed with a large tooth surface of the variable pitch bearing and is used for transmitting the rotating speed and the torque;
the tension controller is arranged on the magnetic powder brake and used for controlling the braking torque of the magnetic powder brake;
the tension controller comprises a PID controller, the tension controller controls the braking torque output by the magnetic powder brake through the PID controller, and the tension controller performs calculation processing through the PID controller by comparing the deviation between the actual output torque of the magnetic powder brake and the set torque, so that the actual output torque of the magnetic powder brake is corrected, and the minimum deviation and the fastest response are realized.
2. The pitch system testing apparatus according to claim 1, wherein the fixing plate is cut and machined from a steel plate.
3. The pitch system testing device according to claim 1, further comprising a heat dissipation system, wherein the heat dissipation system comprises a water tank, a water pump, a heat sink, a quick-change connector and a connector, and the heat dissipation system is connected with the magnetic powder brake and used for cooling the magnetic powder brake.
4. A test protocol for a pitch system test rig according to any of claims 1-3, characterized in that the protocol comprises:
hoisting the hub and the variable-pitch bearing to a test position, and after stable placement, hoisting the test device to the position of the variable-pitch bearing;
the testing device is fixedly connected to the variable pitch bearing through the fixing plate;
adjusting the gear to enable the gear to be meshed with a large tooth surface of the variable pitch bearing, wherein the meshing clearance is smaller than or equal to 0.1 mm;
starting a variable pitch motor, driving the variable pitch bearing to rotate, and driving the gear and the input end of the speed increaser to rotate;
the rotating speed of the output end of the speed increaser is increased through the speed increasing action of the speed increaser, and magnetic powder in the magnetic powder brake is promoted to form a loop along magnetic flux;
switching on a direct-current power supply of the magnetic powder brake, so that the magnetic powder brake brakes the input end of the speed increaser to generate a reaction force on the variable-pitch bearing;
controlling the braking torque of the magnetic powder brake through the PID controller of the tension controller, and changing the magnitude of the reaction force born by the variable-pitch bearing;
and observing the running condition of the variable pitch system, and recording the state data of the corresponding variable pitch system under the action of different braking torques.
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| CN201810256971.0A CN108731957B (en) | 2018-03-27 | 2018-03-27 | Variable pitch system test device and scheme |
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| CN201810256971.0A CN108731957B (en) | 2018-03-27 | 2018-03-27 | Variable pitch system test device and scheme |
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| CN108731957B true CN108731957B (en) | 2021-04-06 |
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| CN110821758B (en) * | 2019-11-13 | 2020-12-01 | 固安华电天仁控制设备有限公司 | Wind turbine generator pitch motor braking torque online detection device and method |
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