CN214887492U - Variable-pitch bearing abnormal sound detection device of wind generating set - Google Patents
Variable-pitch bearing abnormal sound detection device of wind generating set Download PDFInfo
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- CN214887492U CN214887492U CN202120904354.4U CN202120904354U CN214887492U CN 214887492 U CN214887492 U CN 214887492U CN 202120904354 U CN202120904354 U CN 202120904354U CN 214887492 U CN214887492 U CN 214887492U
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Abstract
The utility model discloses a wind generating set's change oar bearing abnormal sound detection device, include: the device comprises a plurality of wireless sensors, a signal acquisition and transmission module and a terminal detection module. At least one wireless sensor is arranged at preset positions of a variable pitch bearing, a blade and a tower of each wind generating set. The wireless sensor collects vibration signals of the abnormal sound variable pitch bearing. The signal acquisition and transmission module is installed in a hub of the wind generating set, acquires a vibration signal of the abnormal sound variable pitch bearing of the wireless sensor and sends the vibration signal to the terminal detection module in a wireless transmission mode. And the terminal detection module analyzes the received vibration signal to generate an abnormal sound detection result. The utility model provides a wind generating set's change oar bearing abnormal sound detection device can judge out the vibration source fast, accurately judges the fault position who becomes the oar bearing according to the testing result of on-line measuring abnormal sound.
Description
Technical Field
The utility model relates to a wind-powered electricity generation technical field, concretely relates to wind generating set's change oar bearing abnormal sound detection device.
Background
With the research of wind power generation grid connection, an online vibration monitoring system is usually installed on a transmission chain of a wind generating set in actual production, a sensor is mainly installed on a main bearing, a gear box and a generator bearing seat, and a diagnosis conclusion is given through a vibration signal acquired by the online vibration monitoring system. When difficult and complicated diseases occur, abnormal sound of the wind turbine generator is difficult to position, and the reasons for the abnormal sound are various, such as foundation looseness, control strategy problems, blades, a tower barrel, a transmission chain and the like; the wind turbine tower barrel is taken as a large loudspeaker, and sound is reverberated inside the tower barrel; because the blades and the hub rotate in real time, the online vibration collector connected to the cabin by additionally arranging a vibration acceleration sensor and a cable cannot be realized. There is a problem that the faulty component cannot be located by the online vibration monitoring data.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a pair of wind generating set's becomes oar bearing abnormal sound detection device has overcome the defect that can't fix a position trouble part through online vibration monitoring data among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
in a first aspect, an embodiment of the utility model provides a wind generating set's change oar bearing abnormal sound detection device, include: a plurality of wireless sensors, a signal acquisition and transmission module and a terminal detection module, wherein,
the system comprises a plurality of wireless sensors, a wind generating set and a control system, wherein at least one wireless sensor is arranged at preset positions of a variable pitch bearing, a blade and a tower of each wind generating set and used for acquiring a vibration signal of an abnormal sound variable pitch bearing;
the signal acquisition and transmission module is arranged in a hub of the wind generating set and used for acquiring vibration signals of the abnormal sound variable pitch bearing of the wireless sensor and sending the vibration signals to the terminal detection module in a wireless transmission mode;
and the terminal detection module is used for analyzing the received vibration signal to generate an abnormal sound detection result.
Optionally, the method further comprises: and the alarm module is used for generating an alarm signal when the abnormal sound detection result outputs an abnormal detection instruction.
Optionally, the signal acquisition and transmission module is further configured to perform wireless transmission after amplifying the vibration signal.
Optionally, the wireless sensor comprises: a wireless acceleration sensor.
Optionally, the wireless sensor further comprises: a wireless temperature sensor.
Optionally, the terminal detection module is further configured to preprocess the received vibration signal to obtain a high-quality vibration signal that can be used for subsequent analysis.
The utility model discloses technical scheme has following advantage:
the utility model provides a pair of wind generating set's change oar bearing abnormal sound detection device, detection device includes: the device comprises a plurality of wireless sensors, a signal acquisition and transmission module and a terminal detection module. At least one wireless sensor is arranged at preset positions of a variable pitch bearing, a blade and a tower of each wind generating set. The wireless sensor collects vibration signals of the abnormal sound variable pitch bearing. The signal acquisition and transmission module is installed in a hub of the wind generating set, acquires a vibration signal of the abnormal sound variable pitch bearing of the wireless sensor and sends the vibration signal to the terminal detection module in a wireless transmission mode. And the terminal detection module analyzes the received vibration signal to generate an abnormal sound detection result. The utility model provides a pair of wind generating set's change oar bearing abnormal sound detection device can judge the vibration source fast, according to the fault position of the accurate judgement change oar bearing of testing result of on-line measuring abnormal sound.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a module composition diagram of a specific example of a pitch bearing abnormal sound detection device of a wind turbine generator system according to an embodiment of the present invention;
fig. 2 is a schematic layout view of a wireless sensor of a pitch bearing abnormal sound detection device of a wind turbine generator system according to an embodiment of the present invention;
fig. 3 is a position relationship diagram of a blade, a pitch bearing and a hub of a pitch bearing abnormal sound detection device of a wind generating set provided by an embodiment of the present invention;
fig. 4 is an image of a waveform change of a specific example of a pitch bearing abnormal sound detection device of a wind turbine generator system according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment of the utility model provides a pair of wind generating set's becomes oar bearing abnormal sound detection device is applied to wind generating set and becomes the fault detection scene of oar bearing.
As shown in fig. 1, the embodiment of the utility model provides a wind generating set's change oar bearing abnormal sound detection device includes: the device comprises a plurality of wireless sensors, a signal acquisition and transmission module and a terminal detection module.
In a specific embodiment, the embodiment of the present invention provides a wireless sensor, including: a wireless acceleration sensor. When abnormal sound signals of a variable-pitch bearing of a wind generating set are collected, along with the generation of instantaneous impact signals, the change of vibration signals needs to be quickly captured due to the fact that the impact signals are attenuated quickly, and therefore a wireless acceleration sensor is adopted. The wireless acceleration sensor is adopted, so that the calculation process of using a displacement sensor or a speed sensor is avoided, the calculation accuracy is improved, and the calculation error is reduced. In the practical application, for the acquisition of the impact signal, the use of a displacement sensor or a speed sensor can cause signal distortion, and the impact signal is not easy to capture. The wireless sensor may also be: and the wireless sensor integrates a wireless acceleration sensor and a wireless temperature sensor. When abnormal sound signals exist, the abnormal sound signals are accompanied by weak temperature changes, so that the wireless temperature sensor is added, and the detection result is more accurate. In practical application, the corresponding wireless sensor is selected according to practical requirements. Because the blade and the hub rotate in real time, the vibration signals of the blade are collected by installing a wireless sensor.
As shown in fig. 2, it is clear to those skilled in the art that a wind turbine generally includes three blades, each blade corresponds to a pitch bearing, and at least one wireless sensor is installed at the pitch bearing of each wind turbine, a preset position of the blade, and a preset position of the tower, and is used for acquiring a vibration signal of the pitch bearing. By way of example only, and not by way of limitation, in practical applications, the corresponding preset position is selected according to actual requirements. For example: on the blade and the tower, each wireless sensor is separated by a preset distance, the preset distance is not limited, and corresponding determination is carried out according to actual conditions. The preset number of detection points can be arranged on the variable pitch bearing, and the preset number is not limited. For example: the arrangement of the detection points of the variable-pitch bearing can be distributed in the clock direction, the detection points are arranged in the three-o-clock, six-o-clock, nine-o-clock and twelve-o-clock directions, the arrangement of the detection points is not limited, and corresponding setting is carried out according to actual requirements.
Fig. 3 shows the positional relationship of the blade, the pitch bearing and the hub. The inner ring and the outer ring of the variable pitch bearing are respectively connected with the blades through the bolts at the hub, when the wind direction changes, the variable pitch drive motor drives the variable pitch bearing to rotate so as to change the windward angle, so that the blades are kept in the optimal windward state, the lift force of the blades is controlled, and the aim of controlling the torque and the power on the blades can be achieved.
The signal acquisition and transmission module is installed in a hub of the wind generating set and used for acquiring vibration signals of the abnormal sound variable pitch bearing of the wireless sensor at the preset position of the blade and the tower and sending the vibration signals to the terminal detection module in a wireless transmission mode. Meanwhile, the signal acquisition and transmission module is also used for carrying out wireless transmission after amplifying the vibration signal. And amplifying the vibration signal under the condition of not changing the original waveform structure. And when the weak small signal is weakly changed, amplifying the signal, and searching a node where the signal change starts to change. The signal acquisition and transmission module can use any one of a local area network, mobile communication and a fan ring network for transmission, the transmission adopts a networking mode without limitation, and corresponding selection is carried out according to actual requirements.
The terminal detection module is located outside the wind generating set, and can use a PC (personal computer), a server or a microprocessor and other terminal detection equipment with an analysis processing function, wherein the terminal detection equipment is not limited here and is selected correspondingly according to actual requirements. The method is used for preprocessing the received vibration signal to obtain a high-quality vibration signal which can be used for subsequent analysis, and then analyzing the vibration signal to generate an abnormal sound detection result. Meanwhile, the analyzed vibration signal can be displayed, so that the detection result is more visual.
Specifically, the abnormal sound fault position of the variable-pitch bearing can be determined according to the sequence of the waveform changes of the vibration signals of the wireless sensors at the current moment. As shown in fig. 4, the waveform change images collected at the blade 1 and the blade 2 at the same time indicate that the vibration of the blade 1 is ahead of that of the blade 2 according to the sequence of the waveform change of the vibration signal.
In a specific embodiment, the embodiment of the utility model provides a wind generating set's change oar bearing abnormal sound detection device still includes: and the alarm module is used for generating an alarm signal when the abnormal sound detection result outputs an abnormal detection instruction. And accurately determining the failed variable pitch bearing according to the wireless sensor generating the abnormal sound detection result.
The embodiment of the utility model provides a wind generating set's change oar bearing abnormal sound detection device, include: the device comprises a plurality of wireless sensors, a signal acquisition and transmission module and a terminal detection module. At least one wireless sensor is arranged at preset positions of a variable pitch bearing, a blade and a tower of each wind generating set. The installation position of the wireless sensor is not limited herein, and other positions of the wind turbine generator system can be also adopted. The wireless sensor collects vibration signals of the abnormal sound variable pitch bearing. The signal acquisition and transmission module is installed in a hub of the wind generating set, acquires a vibration signal of the abnormal sound variable pitch bearing of the wireless sensor and sends the vibration signal to the terminal detection module in a wireless transmission mode. And the terminal detection module analyzes the received vibration signal to generate an abnormal sound detection result. The embodiment of the utility model provides a detection device accurately judges the fault position who becomes oar bearing according to the testing result of on-line measuring abnormal sound.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (6)
1. The utility model provides a wind generating set's becomes oar bearing abnormal sound detection device which characterized in that includes: a plurality of wireless sensors, a signal acquisition and transmission module and a terminal detection module, wherein,
the system comprises a plurality of wireless sensors, a wind generating set and a control system, wherein at least one wireless sensor is arranged at a preset position of each variable pitch bearing, blade and tower of the wind generating set and used for acquiring a vibration signal of an abnormal sound variable pitch bearing;
the signal acquisition and transmission module is arranged in a hub of the wind generating set and used for acquiring vibration signals of the abnormal sound variable pitch bearing of the wireless sensor and sending the vibration signals to the terminal detection module in a wireless transmission mode;
and the terminal detection module is used for analyzing the received vibration signal to generate an abnormal sound detection result.
2. The wind generating set's pitch bearing abnormal sound detection device of claim 1, further comprising: and the alarm module is used for generating an alarm signal when the abnormal sound detection result outputs an abnormal detection instruction.
3. The wind generating set's pitch bearing abnormal sound detection device of claim 2, characterized in that, signal acquisition transmission module is still used for carrying out wireless transmission after vibration signal amplification.
4. The wind generating set's variable pitch bearing abnormal sound detection device of claim 3, characterized in that, wireless sensor includes: a wireless acceleration sensor.
5. The wind generating set's variable pitch bearing abnormal sound detection device of claim 4, wherein wireless sensor further includes: a wireless temperature sensor.
6. The wind generating set's pitch bearing abnormal sound detection device of claim 5, wherein terminal detection module is further used for preprocessing the received vibration signal to obtain a usable high quality vibration signal for subsequent analysis.
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| CN202120904354.4U CN214887492U (en) | 2021-04-28 | 2021-04-28 | Variable-pitch bearing abnormal sound detection device of wind generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374650A (en) * | 2021-04-28 | 2021-09-10 | 观为监测技术无锡股份有限公司 | Variable pitch bearing abnormal sound detection device and method of wind generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374650A (en) * | 2021-04-28 | 2021-09-10 | 观为监测技术无锡股份有限公司 | Variable pitch bearing abnormal sound detection device and method of wind generating set |
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