CN217712819U - Fault diagnosis and service life prediction test device for wind turbine power transmission system - Google Patents
Fault diagnosis and service life prediction test device for wind turbine power transmission system Download PDFInfo
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- CN217712819U CN217712819U CN202221608412.XU CN202221608412U CN217712819U CN 217712819 U CN217712819 U CN 217712819U CN 202221608412 U CN202221608412 U CN 202221608412U CN 217712819 U CN217712819 U CN 217712819U
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Abstract
The utility model relates to a wind turbine power transmission system fault diagnosis and life prediction test device, which comprises a test bed for installing a power transmission system and a mode switching mechanism; the power transmission simulation system comprises a speed reducer, a parallel shaft gear box, a single-stage planetary gear box, a torque sensor and a variable speed load which are sequentially connected; the fault simulation assembly is used for simulating different fault modes and comprises a set of bearing fault assemblies and a set of gear fault assemblies; the mode switching mechanism comprises a sliding plate which is arranged on the test bed in a sliding mode, a wind turbine simulator and a motor are arranged on the sliding plate at intervals along the sliding direction of the sliding plate, the speed reducer is connected with the wind turbine simulator or the motor through a coupler, and a locking mechanism for locking the mode switching mechanism is arranged between the sliding plate and the test bed. The system has the advantages of reasonable structural design, capability of selecting a semi-physical simulation state or an extreme condition running state, fault diagnosis, service life prediction and the like.
Description
The technical field is as follows:
the utility model relates to a wind power generation technical field, concretely relates to wind turbine power transmission system failure diagnosis and life prediction test device.
Background art:
wind energy is becoming one of the effective means for alleviating energy shortage and promoting energy conservation and emission reduction nowadays, and wind turbines are key devices for converting wind energy into mechanical energy, electric energy and heat energy, and thus are widely used. However, due to the harsh operating environment and varying operating conditions, wind turbines are prone to failure, resulting in unplanned shutdowns and additional maintenance costs. According to the investigation of the Keys wind farm information forum, the frequency of wind farm outages increases from 156 per year (during 2009-2014) to 176 per year (2015-2019), which undoubtedly causes huge economic losses. In order to reduce the number of unplanned stops and to reduce maintenance costs, it is imperative to explore and understand the failure modes and life states of wind turbines.
To address the above needs, many scientists have devised wind turbine drivetrain test setups to explore wind turbine fault and life conditions. However, some existing test devices have some disadvantages, for example, some test devices adopt a wind turbine simulator to further establish a semi-physical wind turbine transmission system, which can intuitively show the wind power generation process, but due to the difference of experimental environments such as wind speed, the running state of a traditional system for driving the wind turbine cannot be fully shown by test equipment; in another example, some test devices utilize electrical simulation of blade rotation to simulate drive conditions under certain extreme conditions, but fail to simulate the full life conditions of the wind turbine drivetrain. Therefore, there is a need for improved and improved test devices for better fault diagnosis and life prediction of wind turbine drivetrain.
The above description is included in the technical knowledge of the inventors, and does not necessarily constitute a prior art.
The utility model has the following contents:
an object of the utility model is to solve the problem that prior art exists, provide wind turbine power transmission system failure diagnosis and life prediction test device, have that structural design is reasonable, can select semi-physical simulation state or extreme condition running state, realize advantages such as failure diagnosis and life prediction.
The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:
wind turbine power transmission system failure diagnosis and life prediction test device includes:
the test bed is used for installing a power transmission system and a mode switching mechanism;
the power transmission simulation system comprises a speed reducer, a parallel shaft gear box, a single-stage planetary gear box, a torque sensor and a variable speed load which are sequentially connected;
fault simulation assemblies for simulating different fault modes, including a set of bearing fault assemblies for replacing bearings in the parallel shaft gearbox and the single stage planetary gearbox and a set of gear fault assemblies for replacing gears in the parallel shaft gearbox and the single stage planetary gearbox;
the mode switching mechanism comprises a sliding plate which is arranged on the test bed in a sliding mode, a wind turbine simulator and a motor are arranged on the sliding plate at intervals along the sliding direction of the sliding plate, the speed reducer is connected with the wind turbine simulator or the motor through a coupler, and a locking mechanism for locking the mode switching mechanism is arranged between the sliding plate and the test bed.
The test bed is provided with two sliding grooves at intervals, two sliding rails are correspondingly arranged on the bottom surface of the sliding plate at intervals, the sliding rails are arranged in the sliding grooves, and the length of the sliding grooves is larger than that of the sliding rails.
Locking mechanism sets up threaded hole group A and threaded hole group B on the test bench including the interval, threaded hole group A includes four screw hole A that the interval set up, threaded hole group B includes four screw hole B that the interval set up, be equipped with the mounting hole that matches with screw hole A and screw hole B on the slide, be equipped with the bolt on the mounting hole, be connected through bolt and screw hole A and lock the slide when wind turbine simulator links to each other with the speed reducer, be connected through bolt and screw hole B and lock the slide when motor links to each other with the speed reducer.
The bearing fault fittings comprise a bearing with a defective inner ring, a bearing with a defective outer ring and a bearing with a defective ball; the gear failure accessories include gear with missing teeth, gear with cracked tooth root and gear with worn surface.
The motor is a variable-speed driving motor, and the upper end covers of the parallel shaft gear box and the single-stage planetary gear box are made of transparent materials.
The variable speed load is a generator.
The utility model adopts the above structure, following beneficial effect can be brought:
(1) The switching selection of a wind turbine simulator and a motor and power transmission simulation system can be realized, namely the simulation of two running states, namely a semi-physical simulation state and an extreme condition can be realized, so that the full-state simulation and monitoring of the power transmission system of the wind turbine are realized; (2) Different fault modes can be simulated by opening the upper end transparent cover and replacing the bearings and the gears in the parallel shaft gear box and the bearings and the gears in the single-stage planetary gear box, so that the full-state simulation of the power transmission system of the wind turbine is realized, and the fault diagnosis and the service life prediction are realized.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the testing device of the present invention;
FIG. 2 is a schematic view of a partial structure of the test bed of the present invention;
FIG. 3 is a block diagram of the signal acquisition module of the testing device of the present invention;
in the figure, 1, a test stand, 2, a power transmission simulation system, 201, a speed reducer, 202, a parallel shaft gear box, 203, a single-stage planetary gear box, 204, a torque sensor, 205, a variable speed load, 3, a mode switching mechanism, 301, a sliding plate, 302, a wind turbine simulator, 303, a motor, 304, a sliding groove, 305, a sliding rail, 4, a coupling, 5, a locking mechanism, 501, a threaded hole group A,502, a threaded hole group B,503, a threaded hole A,504, a threaded hole B,505, a mounting hole, 506 and a bolt.
The specific implementation mode is as follows:
in order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
Furthermore, the terms "a," "B," "upper," "lower," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any position of indicated technical features.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
1-3, a wind turbine drivetrain failure diagnosis and life prediction test apparatus, comprising:
the test bed 1 is used for installing a power transmission system 2 and a mode switching mechanism 3;
the power transmission simulation system 2 comprises a speed reducer 201, a parallel shaft gearbox 202, a single-stage planetary gearbox 203, a torque sensor 204 and a variable speed load 205 which are connected in sequence;
fault simulation assemblies for simulating different fault modes, including a set of bearing fault assemblies for replacing bearings in the parallel shaft gearbox and the single stage planetary gearbox and a set of gear fault assemblies for replacing gears in the parallel shaft gearbox and the single stage planetary gearbox; the fault simulation accessory of this application belongs to prior art, and direct purchase can.
The mode switching mechanism 3 comprises a sliding plate 301 which is arranged on the test bed 1 in a sliding mode, a wind turbine simulator 302 and a motor 303 are arranged on the sliding plate 301 at intervals along the sliding direction of the sliding plate, the wind turbine simulator can be purchased directly, the speed reducer 301 is connected with the wind turbine simulator 301 or the motor 303 through a coupling 4, and a locking mechanism 5 which locks the mode switching mechanism 3 is arranged between the sliding plate 301 and the test bed 1. The switching selection of a wind turbine simulator and a motor and power transmission simulation system can be realized, namely the simulation of two running states, namely a semi-physical simulation state and an extreme condition can be realized, so that the full-state simulation and monitoring of the power transmission system of the wind turbine are realized; different fault modes can be simulated by opening the upper end transparent cover and replacing the bearings and gears in the parallel shaft gear box and the bearings and gears in the single-stage planetary gear box with fault simulation accessories, so that the full-state simulation of the power transmission system of the wind turbine is realized, and the fault diagnosis and the service life prediction are realized.
Two sliding grooves 304 are formed in the test bed 1 at intervals, two sliding rails 305 are correspondingly formed in the bottom surface of the sliding plate 301 at intervals, the sliding rails 305 are arranged in the sliding grooves 304, and the length of each sliding groove 304 is larger than that of each sliding rail 305. The sliding of the sliding plate 301, and thus the switching of the wind turbine simulator 302 and the motor 303, is achieved by means of the sliding groove 304 and the sliding rail 305.
The bearing fault fittings comprise a bearing with a defective inner ring, a bearing with a defective outer ring and a bearing with a defective ball; the gear failure accessories include a gear with missing teeth, a gear with cracked tooth root and a gear with worn surface. And (4) simulating the full-state fault mode in a combined mode by replacing accessories.
The motor 303 is a variable-speed driving motor, and the upper end covers of the parallel shaft gearbox 202 and the single-stage planetary gearbox 203 are made of transparent materials. The internal operation condition is convenient to observe.
The variable speed load 205 is a generator or.
The utility model discloses test device instructions:
the application of the testing device can realize signal acquisition through external or added modes, and can magnetically attract or paste the acquisition sensor on a monitored part according to acquisition requirements during actual use, so that flexible multi-source acquisition is achieved.
The signal acquisition system matched with the test device comprises a plurality of sensors, an acquisition card and an upper computer. The sensor includes a plurality of vibration sensors and a plurality of foil gage formula pressure sensor, and vibration sensor adopts the mode installation of magnetism to inhale, can install according to the fault location and the fault situation of simulation. For example, when a single fault single signal of the single-stage planetary gearbox is to be monitored, a vibration sensor can be magnetically adsorbed to the X direction of the gearbox shell to carry out signal acquisition; when multi-axial signals of single fault of the single-stage planetary gearbox are to be monitored, a plurality of vibration sensors can be magnetically adsorbed in the direction of a gearbox shell X, Y, Z for signal acquisition; when the composite fault of a plurality of gear boxes is to be monitored, the vibration sensors can be respectively magnetically adsorbed on the gear boxes to acquire signals, the number of the sensors is not strictly limited, and the vibration sensors can be expanded according to requirements. The strain gauge type pressure sensor is mounted in a sticking mode, and the application of the strain gauge type pressure sensor is the same as that of the vibration sensor.
The sensors are connected with the acquisition card in a wired mode, the total number of the sensors does not exceed the maximum acquisition channel of the acquisition card at most, two thirds of the acquisition card channel from the left side is a vibration sensor channel, and the rest are strain gauge type pressure sensor channels. The acquisition card is provided with a signal processing module of a corresponding channel and an edge calculation module.
The acquisition card is in wired connection with an upper computer and transmits signals of all the channels with processed edge calculation to the upper computer. The upper computer is provided with a display module (for realizing signal display) for displaying each channel signal, a trained deep learning fault diagnosis module (for realizing fault diagnosis or service life prediction) and a storage module for storing different simulation states in a grading manner.
When the wind turbine simulator is used, the wind turbine simulator 302 and the motor 303 can be switched by adjusting the position of the sliding plate 301, a semi-physical simulation state can be realized when the wind turbine simulator 302 is connected with the speed reducer 201, and an extreme condition simulation state can be realized when the motor 303 is connected with the speed reducer 201.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (6)
1. Wind turbine power transmission system failure diagnosis and life prediction test device characterized by includes:
the test bed is used for installing a power transmission system and a mode switching mechanism;
the power transmission simulation system comprises a speed reducer, a parallel shaft gear box, a single-stage planetary gear box, a torque sensor and a variable speed load which are sequentially connected;
fault simulation assemblies for simulating different fault modes, including a set of bearing fault assemblies for replacing bearings in parallel axis gearboxes and single stage planetary gearboxes and a set of gear fault assemblies for replacing gears in parallel axis gearboxes and single stage planetary gearboxes;
the mode switching mechanism comprises a sliding plate which is arranged on the test bed in a sliding mode, a wind turbine simulator and a motor are arranged on the sliding plate at intervals along the sliding direction of the sliding plate, the speed reducer is connected with the wind turbine simulator or the motor through a coupler, and a locking mechanism for locking the mode switching mechanism is arranged between the sliding plate and the test bed.
2. The wind turbine power transmission system fault diagnosis and life prediction test device of claim 1, wherein two sliding grooves are arranged on the test bed at intervals, two sliding rails are arranged on the bottom surface of the corresponding sliding plate at intervals, the sliding rails are arranged in the sliding grooves, and the length of the sliding grooves is greater than that of the sliding rails.
3. The wind turbine power transmission system fault diagnosis and life prediction test device according to claim 2, wherein the locking mechanism comprises a threaded hole group A and a threaded hole group B which are arranged on the test bed at intervals, the threaded hole group A comprises four threaded holes A which are arranged at intervals, the threaded hole group B comprises four threaded holes B which are arranged at intervals, a mounting hole matched with the threaded holes A and the threaded holes B is arranged on the sliding plate, a bolt is arranged on the mounting hole, the wind turbine simulator is connected with the speed reducer through the bolt and the threaded holes A to lock the sliding plate, and the motor is connected with the speed reducer through the bolt and the threaded holes B to lock the sliding plate.
4. The wind turbine drivetrain system fault diagnosis and life prediction test apparatus of claim 3, wherein the bearing failure accessories comprise a bearing with a defective inner race, a bearing with a defective outer race, and a bearing with a defective ball; the gear failure accessories include gear with missing teeth, gear with cracked tooth root and gear with worn surface.
5. The wind turbine drivetrain failure diagnosis and life prediction test apparatus according to claim 4, wherein the electric motor is a variable speed drive motor, and the upper end covers of the parallel shaft gearbox and the single stage planetary gearbox are made of a transparent material.
6. The wind turbine drivetrain failure diagnostic and life expectancy testing apparatus according to claim 5, wherein the variable speed load is a generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221608412.XU CN217712819U (en) | 2022-06-24 | 2022-06-24 | Fault diagnosis and service life prediction test device for wind turbine power transmission system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221608412.XU CN217712819U (en) | 2022-06-24 | 2022-06-24 | Fault diagnosis and service life prediction test device for wind turbine power transmission system |
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| CN217712819U true CN217712819U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221608412.XU Active CN217712819U (en) | 2022-06-24 | 2022-06-24 | Fault diagnosis and service life prediction test device for wind turbine power transmission system |
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| CN (1) | CN217712819U (en) |
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2022
- 2022-06-24 CN CN202221608412.XU patent/CN217712819U/en active Active
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