CN214699134U - Wind turbine generator system gear box lubricating oil on-line monitoring device - Google Patents

Wind turbine generator system gear box lubricating oil on-line monitoring device Download PDF

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CN214699134U
CN214699134U CN202120783140.6U CN202120783140U CN214699134U CN 214699134 U CN214699134 U CN 214699134U CN 202120783140 U CN202120783140 U CN 202120783140U CN 214699134 U CN214699134 U CN 214699134U
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lubricating oil
oil
monitoring device
sensor
monitoring
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张萌萌
郭万军
宋涛
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Nanjing Normal University
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Nanjing Normal University
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Abstract

The utility model provides a wind turbine generator system gear box lubricating oil on-line monitoring device, the device include lubricating oil monitoring bypass, on-line monitoring device, data transmission and control module, cloud ware, customer end. The lubricating oil monitoring bypass is connected in parallel with a main oil path at the outlet of the gear box, lubricating oil is led out from the main oil path, when the lubricating oil flows through the online monitoring device, real-time data of various parameters of the oil are comprehensively collected and sent to the data transmission and control module, the real-time data are uploaded to the cloud server by using wireless communication setting on the module, and after a client side obtains monitoring data, the monitoring data are comprehensively processed and analyzed by a system software program according to compensation parameters obtained by early-stage experiments, so that the effective monitoring of the quality of the lubricating oil is realized, a certain basis is provided for subsequent control measures and fault diagnosis, and basic maintenance and regulation and control operation are realized by the data transmission and control module. The utility model discloses both satisfied off-line measuring's requirement, remedied off-line measuring's drawback again.

Description

Wind turbine generator system gear box lubricating oil on-line monitoring device
Technical Field
The utility model belongs to the technical field of wind turbine generator system state monitoring and intelligent control, a wind turbine generator system gear box lubricating oil on-line monitoring device is related to.
Background
In a wind turbine generator, a gear box is an important ring which influences the operation and maintenance life and safety of the whole generator. Wind turbine generator system often erects in the abominable place of natural environment, and wind-force effect has various uncontrollable nature moreover for wind turbine generator system often is in stress position and the inhomogeneous state of size, and factor influences such as extreme weather and day and night difference in temperature great such as stormy waves, snowstorm, strong typhoon lead to the gear box trouble frequently, but equipment fixing and maintenance work are difficult to develop, and corresponding cost is also very high. If the gearbox breaks down, the whole wind turbine system is affected, and great loss in the aspects of economy, safety and the like is caused.
By real-time analysis of the quality of the lubricating oil, faulty components can be determined or potentially harmful events can be predicted. But the traditional periodic sampling and offline detection of lubricating oil has certain limitations: the real-time performance is poor, the accumulated data volume is small, and the sampling requirement is high; especially, a large amount of manpower and material resources are consumed for sampling lubricating oil in offshore wind turbine equipment. By adopting the lubricating oil online real-time monitoring technology, the performance change trend of the lubricating oil and the condition of the wrapped abrasive particles in the lubricating oil can be monitored in real time, the lubricating current situation and the wear degree of a machine can be obtained, and the abnormal conditions of a system and equipment, even faults which possibly occur, can be predicted and diagnosed in time, so that the equipment halt inspection time is reduced, the utilization rate of the equipment is improved, the cost is saved, the early warning can be realized, and the accident rate is greatly reduced. Therefore, a set of gear box oil on-line monitoring system is developed to monitor the quality of the lubricating oil in real time, and the system has certain industrial value and economic benefit.
However, the current relevant patent mainly focuses on the lubricating oil on-line monitoring aspect at present, including hardware selection and connection and data detection acquire the other aspects, and to how guarantee the accuracy of monitoring data, how to analyze effectively specifically and utilize monitoring data and take the problem in the aspects such as corresponding control measure according to the monitoring result with the linkage of maintenance mechanism and do not provide the solution, in order to solve above-mentioned problem, the utility model provides a wind turbine generator system gear box lubricating oil on-line monitoring device, monitoring method and system.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: an object of the utility model is to remedy prior art's defect, overcome prior art not enough, provide a wind turbine generator system gear box lubricating oil on-line monitoring device, carry out comprehensive real-time supervision to each item quality of lubricating oil, guarantee monitoring data's accuracy provides more audio-visual lubricated oil trend through data processing analysis, realizes the control and the management of lubricating oil state comparatively perfectly. The utility model discloses can realize improve equipment's utilization ratio, the trouble of early warning gear box guides to change oil as required and looks the feelings to maintain, reduces the total cost in the aspect of equipment operation and maintenance, and reinforcing equipment moving fail safe nature practices thrift manpower and materials's purpose.
The technical scheme is as follows: the utility model provides a wind turbine generator system gear box lubricating oil on-line monitoring device includes: the lubricating oil bypass is used for leading out oil in a main oil way of a hydraulic system of the gearbox and providing an interface for the online monitoring device; the on-line monitoring device is used for monitoring various parameters of the lubricating oil in real time, wherein the parameters comprise the temperature, the density, the viscosity, the water content, the water activity, the dielectric constant and the granularity of the lubricating oil; the data transmission and control module is used for communicating and controlling, collecting monitoring data transmitted by the online monitoring device, uploading the monitoring data to the cloud server through wireless communication, and then starting related control operation according to the instruction of a manager and a preset program; the cloud server is used for storing system preset information and a large amount of continuous monitoring data transmitted by the data transmission and control module for the client to inquire and use; and the client is used for processing and analyzing the data, displaying the change trend of the lubricating oil parameters and real-time monitoring data through monitoring system software, and realizing early warning and state diagnosis through comparative analysis.
Furthermore, the lubricating oil bypass is connected in parallel with a main oil path between the outlet of the gear box and the inlet of the main oil pump and comprises an oil inlet pipeline and an oil outlet pipeline;
furthermore, the online monitoring device is arranged between an oil inlet pipeline and an oil outlet pipeline of the lubricating oil bypass;
further, the online monitoring device comprises an inlet pressure gauge, an inlet electromagnetic valve, a defoaming module, an oil product sensor, a moisture sensor, a pressure stabilizing buffer tank, a granularity sensor, a flow regulating valve, a circulating pump, an outlet pressure gauge, an outlet electromagnetic valve, an oil inlet, an oil outlet, a shell, a power supply module, a first monitoring pipeline and a second detection pipeline;
the inlet pressure gauge and the outlet pressure gauge are respectively arranged in front of the oil inlet and behind the oil outlet and outside the shell and are used for detecting the pipeline pressure of the oil inlet and the oil outlet of the online monitoring device; the inlet electromagnetic valve is arranged behind the oil inlet and in front of the defoaming module and is used for controlling the opening and closing of a front oil way in the online monitoring device; the outlet electromagnetic valve is arranged between the oil outlet and the circulating pump and used for controlling the opening and closing of a rear oil circuit in the online monitoring device; the defoaming module is arranged in front of the inlet electromagnetic valve and the parallel sensor and is used for removing bubbles in the lubricating oil; the first monitoring pipeline and the second monitoring pipeline are connected in parallel between the defoaming module and the circulating pump and used for installing a monitoring sensor; the first monitoring pipeline is sequentially provided with a pressure stabilizing buffer tank and a granularity sensor; the second monitoring sensor is sequentially provided with an oil product sensor and a moisture sensor; the pressure stabilizing buffer tank is cylindrical, the pipe diameter of the pressure stabilizing buffer tank is at least three times of that of the second monitoring pipeline, and the pressure stabilizing buffer tank is used for stabilizing the pressure in front of the granularity sensor and the flow passing through the monitoring pipeline; the circulating pump is a centrifugal pump or a gear pump and is used for providing power for the circulation of lubricating oil in the online monitoring device; the shell is made of metal; the flow regulating valve is used for enabling the flow and the pressure to meet the requirements of the granularity sensor, so that the detection precision is improved, and the measurement error is reduced.
Furthermore, the power supply module provides a stable power supply for the inlet electromagnetic valve, the oil product sensor, the moisture sensor, the granularity sensor, the flow regulating valve, the circulating pump and the outlet electromagnetic valve;
furthermore, the monitoring parameters of the oil product sensor at least comprise four items of temperature, viscosity, density and dielectric constant of the lubricating oil;
further, the monitoring parameters of the moisture sensor at least comprise the water content and the water activity of the lubricating oil;
furthermore, the granularity sensor monitors the granularity of the lubricating oil by adopting a shading method principle, at least two particle pollution degree grade standards of NAS1638 and ISO4406 are set, and the particle count and the pollution degree grade of a measured sample are given in real time;
furthermore, an oil product sensor, a moisture sensor and a granularity sensor in the on-line monitoring device are provided with serial ports, and data are transmitted to the data transmission and control module through an RS485 bus;
further, the data transmission and control module uploads the monitoring data to a cloud server through a 4G communication module or a wifi communication module;
further, the data transmission and control module comprises an RS485 communication unit, a wireless communication unit, a first control unit and a second control unit; the RS485 communication unit is connected with an online monitoring device; the wireless communication unit comprises a 4G communication module or a wifi communication module; the first control unit is respectively connected with the oil filter and the oil cooler; the second control unit is respectively connected with the electromagnetic valve, the flow regulating valve and the circulating pump;
furthermore, the client side adopts an upper computer PC, a tablet personal computer and a mobile phone, wherein lubricating oil online monitoring system software is installed;
further, an insulating layer is designed outside the lubricating oil bypass and the online monitoring device shell;
has the advantages that: compare with current wind turbine generator system gear box lubricating oil on-line monitoring device, the utility model has the advantages of it is following:
1. real-time data are processed and analyzed through earlier-stage experiments and fitting results, so that the real-time data are more consistent with the actual state of oil, the defect that hardware equipment is difficult to avoid in the monitoring process is overcome, the system accuracy is improved, compensation parameters are stored in a system database, and the monitoring data have higher reference value.
2. The temperature difference around the online monitoring device that lubricating oil flows through can be reduced to pipeline installation position and heat retaining design, reduces the interference factor of monitoring to and the equipment such as defoaming module, steady voltage buffer tank, flow control valve set up in the online monitoring device and all improved the accuracy of system, restore the real quality of gear box lubricating oil more.
3. An online monitoring system software platform meeting diversified requirements is designed, and the functions of trend display, intelligent early warning, information inquiry, data export backup and the like are achieved; the method can provide more visual lubricating oil product trend, including single-parameter time variation trend and double-parameter characteristic variation trend, can be used for inquiring and selecting in various time periods, and can be used for more perfectly monitoring and managing the state of the lubricating oil.
4. The operation and maintenance conditions of the mechanical equipment are tracked in real time, and the defects of an off-line detection technology are greatly overcome.
5. Automatic monitoring, automatic feedback and automatic early warning are realized, the time for equipment shutdown inspection is reduced, and the utilization rate of the equipment is improved; the total cost of equipment in operation and maintenance is reduced, the reliability and safety of equipment operation are enhanced, and greater loss is effectively avoided.
6. The oil change and the visual maintenance are guided according to the needs, the state monitoring is not only limited, the follow-up control means is creatively integrated, the mode that the control module is connected with each operating mechanism is adopted, the monitoring and the control are linked, the effective maintenance measures can be taken according to the oil quality, the manpower and the material resources are saved, and the resource waste is avoided.
Drawings
Fig. 1 is a structural diagram of the online monitoring device for lubricating oil of the gearbox of the wind turbine generator system provided by the utility model;
fig. 2 is a schematic view of an installation of an online monitoring device in a wind turbine generator according to a preferred embodiment of the present invention;
fig. 3 is a schematic structural view of the on-line monitoring device provided by the present invention;
fig. 4 is a schematic structural diagram of a data transmission and control module according to the present invention;
FIG. 5 is a flow chart of the use of the lubricating oil on-line monitoring device for the gearbox of the wind turbine generator according to the preferred embodiment of the present invention;
fig. 6 is a flow chart of a main program of a software of an online monitoring system for lubricating oil of a gearbox of a wind turbine generator according to a preferred embodiment of the present invention;
FIG. 7 is a schematic diagram of the lubricating oil on-line monitoring device for the gearbox of the wind turbine generator of the large-scale wind power plant according to the preferred embodiment of the present invention;
reference numerals:
1-gear box, 2-main oil pump, 3-oil filter, 4-oil cooler, 5-online monitoring device, 6-data transmission and control module, 7-oil inlet pipeline, 8-oil outlet pipeline, 9-main oil way, 10-cloud server, 11-client, 12-lubricating oil bypass, 501-inlet pressure gauge, 502-inlet electromagnetic valve, 503-defoaming module, 504-oil sensor, 505-water sensor, 506-pressure stabilizing buffer tank, 507-granularity sensor, 508-flow regulating valve, 509-circulating pump, 510-oil inlet, 511-oil outlet, 512-shell, 513-power supply module, 6-data transmission and control module, 514-outlet electromagnetic valve, 515-outlet pressure gauge, 516-a first monitoring tube, 517-a second monitoring tube, 601-a first control unit, 602-a wireless communication unit, 603-a 485 communication unit, 604-a second control unit.
Detailed Description
The invention is further described with reference to the following figures and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example one
As shown in fig. 1, the online monitoring device for lubricating oil of the gearbox of the wind turbine generator system provided by the embodiment includes a lubricating oil bypass 12, which is used for leading out oil in a main oil path 9 of a hydraulic system of the gearbox 1 and providing an interface for the online monitoring device 5; the on-line monitoring device 5 is used for monitoring various parameters of the lubricating oil in real time, wherein the parameters comprise the temperature, the density, the viscosity, the water content, the water activity, the dielectric constant and the granularity of the lubricating oil; the data transmission and control module 6 is used for communicating and controlling, collecting monitoring data transmitted by the online monitoring device 5, uploading the monitoring data to the cloud server 10 through wireless communication, and then starting related control operation according to a manager and a preset program; the cloud server 10 is used for storing system preset information and a large amount of continuous monitoring data transmitted by the data transmission and control module for the query of the client; and the client 11 is used for processing and analyzing the data, displaying the change trend of the lubricating oil parameters and real-time monitoring data through monitoring system software, and realizing early warning and state diagnosis through comparative analysis. The lubricating oil bypass 12 comprises an oil inlet pipeline 7 and an oil outlet pipeline 8.
Fig. 2 is the embodiment of the utility model provides an installation schematic diagram of on-line monitoring device on wind turbine generator system among the wind turbine generator system gear box lubricating oil on-line monitoring device, lubricating oil bypass 12 connects in the main oil circuit between 1 export of gear box and the import of main oil pump 2 in wind turbine generator system gear box lubricating oil circulation system, on-line monitoring device 5 is installed in lubricating oil bypass 12, the design of lubricated bypass 12 position makes the fluid in the gear box carry out quality monitoring earlier and flow down next link again, be favorable to in time obtaining lubricating oil information and gear box running state effectively, avoid the interference of other devices to fluid monitoring result, be convenient for the very first time when the discovery is unusual to carry out fault diagnosis and equipment maintenance. The lubricating oil bypass 12 and the outside of the on-line monitoring device shell 512 are designed with heat insulation layers, so that heat transfer between the lubricating oil bypass and the outside in the lubricating oil monitoring process is reduced, and the influence of the ambient temperature and bad working conditions on the measurement result is reduced.
Referring to fig. 1 and 2, when lubricating oil enters the lubricating oil bypass 12 and flows through the online monitoring device 5, the online monitoring device 5 detects real-time data of various parameters of the lubricating oil, sends the data to the data transmission and control module 6 through an RS485 communication link, uploads the data to the cloud server by using the wireless communication unit 602 on the module, and finally, the client 11 obtains monitoring data by using online monitoring system software and processes and analyzes the monitoring data. The staff can check the information of each oil quality parameter in real time on the monitoring software of the client, so as to guide the follow-up maintenance work.
Example two
As shown in fig. 3, as a specific preferred embodiment, the online monitoring device 5 includes an inlet pressure gauge 501, an inlet solenoid valve 502, a defoaming module 503, an oil sensor 504, a moisture sensor 505, a surge tank 506, a particle size sensor 507, a flow regulating valve 508, a circulating pump 509, an oil inlet 510, an oil outlet 511, a housing 512, a power supply module 513, an outlet pressure gauge 514, an outlet solenoid valve 515, a first monitoring pipe 516, and a second monitoring pipe 517.
The inlet pressure gauge 501 and the outlet pressure gauge 514 are respectively installed in front of the oil inlet 510 and behind the oil outlet 511, and are arranged outside the shell 512 for detecting the pipeline pressure of the oil inlet and the oil outlet of the online monitoring device; the inlet electromagnetic valve 502 is installed behind the oil inlet 510 and in front of the defoaming module 503 and is used for controlling the opening and closing of a front oil path in the online monitoring device; the outlet electromagnetic valve 515 is installed between the oil outlet 511 and the circulating pump 509 and is used for controlling the opening and closing of a rear oil circuit in the online monitoring device; the bubble removing module 503 is installed in front of the inlet solenoid valve 502 and the parallel sensor, and is used for removing bubbles in the lubricating oil; the first monitoring pipeline 516 and the second monitoring pipeline 517 are connected in parallel between the defoaming module 503 and the circulating pump 509 and are used for installing monitoring sensors; the first monitoring pipeline 516 is sequentially provided with a pressure stabilizing buffer tank 506 and a granularity sensor 507; the second monitoring sensor 517 is sequentially provided with an oil product sensor 504 and a moisture sensor 505; the pressure stabilizing buffer tank 506 is cylindrical, and the pipe diameter of the pressure stabilizing buffer tank is at least three times of that of the second monitoring pipeline 517; the circulating pump 509 is a centrifugal pump or a gear pump and is used for providing power for the circulation of lubricating oil in the online monitoring device; the shell 512 is made of metal and is used for resisting severe working conditions and prolonging the service life; the flow regulating valve is used for enabling the flow and the pressure to meet the requirements of the granularity sensor, improving the detection precision and reducing the measurement error; the power supply module 513 provides a stable power supply for the inlet electromagnetic valve 502, the oil sensor 504, the moisture sensor 505, the particle size sensor 507, the flow regulating valve 508, the circulating pump 509 and the outlet electromagnetic valve 515.
Wherein, the monitoring parameters of the oil sensor 504 at least include the temperature, viscosity, density and dielectric constant of the lubricating oil; the monitoring parameters of the moisture sensor 505 at least comprise the water content and the water activity of the lubricating oil; the granularity sensor 507 monitors the granularity of the lubricating oil by adopting a shading method principle, at least sets NAS1638 and ISO4406 two particle pollution degree grade standards, and gives the particle count and the pollution degree grade of the measured sample in real time; oil sensor 504, moisture sensor 505, the granularity sensor 507 among the on-line monitoring device 5 are provided with the serial ports, give data transmission and control module 6 through the RS485 bus with data transmission, propose here, the kind of oil parameter is unfixed, and sensor quantity and kind can be collocation and install according to the demand.
Because the built-in pipeline pipe diameter of the granularity sensor 507 is thin, the flow limiting is large, in order to maintain the flowing state of lubricating oil in the pipe, the flow meets the measurement requirement of the sensor, a circulating pump 509, a pressure stabilizing buffer tank 506 and a flow regulating valve 508 are additionally arranged in the online monitoring device 5, when the flow deviates from the normal range, the second control unit 604 adjusts the three devices to ensure the normal work of the sensor, the working condition is ensured to be stable, and the interference of the outside on the measurement process is reduced. The bubble removing module effectively removes bubbles in the lubricating oil, prevents the bubbles from influencing the monitoring result of the sensor, and improves the reliability of the detection data.
EXAMPLE III
As shown in fig. 4, as a specific preferred embodiment, the data transmission and control module 6 includes an RS485 communication unit 603, a wireless communication unit 602, a first control unit 601, a second control unit 604; the RS485 communication unit 603 is connected with the online monitoring device 5; the wireless communication unit 602 comprises a 4G communication module or a wifi communication module, and uploads monitoring data to the cloud server 10; the first control unit 601 is respectively connected with the oil filter 3 and the oil cooler 4; the second control unit 604 is respectively connected with the inlet electromagnetic valve 502, the outlet electromagnetic valve 515, the flow regulating valve 508 and the circulating pump 509; the monitoring and control functions are parallel, so that the detection result is utilized, rapid data integration and storage, high-efficiency bidirectional information transmission and confidentiality security are realized, remote diagnosis decision and control are supported, and the working efficiency and performance of the online monitoring system are guaranteed.
Example four
In a preferred embodiment, the client 11 is an upper computer PC, a tablet PC or a mobile phone, in which an online monitoring system for lubricating oil of a gearbox of a wind turbine generator system is installed. The online monitoring system for the lubricating oil of the gear box of the wind turbine generator comprises 4 parts, namely basic information setting, real-time data display, information statistics query and report generation. And the basic information setting module is used for providing authority setting information, user setting information, various system parameters and basic equipment information. The basic information of the equipment comprises related information of a gearbox equipment body, setting information of on-line monitoring equipment such as a sensor and a data transmission and control module, related information of a sampling point and a monitoring point, overhaul information of the equipment and the like; the real-time data display module is used for displaying two contents of a data processing result and oil state evaluation and providing a reference basis for the running state evaluation and fault diagnosis of the gear box equipment; the information statistics query module is used for providing six query functions, including historical data query, oil information query, offline standard query, online standard query and alarm and fault record query. The alarm and the fault record can provide historical running states of equipment, give performance attenuation and fault signal prompts, play the same role of prejudgment, and can also be provided for a fault expert system as a diagnosis basis; and the data report generation module is used for sorting corresponding data according to the selected time period and generating a data table or curve of the oil product characteristics and granularity according to a preset format so as to carry out later statistics and query.
The online monitoring system for the lubricating oil of the gearbox of the wind turbine generator also comprises an inquiry module, a trend chart and a data acquisition module, wherein the inquiry module is used for providing inquiry functions of data and trend charts in various time periods, including hour inquiry, day inquiry, week inquiry and month inquiry; the online monitoring system software is pre-stored with compensation parameters and characteristic coefficients obtained by a simulation experiment; the alarm module is used for providing diversified out-of-limit alarm functions and providing various alarm types; on one hand, the design of functions such as alarm limit value and the like can be carried out according to the requirements of the user, and on the other hand, the setting can be carried out according to the early warning reference value provided by the system; the system displays alarm information in real time according to the monitored data and the comparison operation at any time, gives an alarm prompt, and improves the safety, stability and reliability of equipment in operation.
EXAMPLE five
Referring to fig. 5, the embodiment of the utility model provides a large-scale wind power plant wind turbine generator system gear box lubricating oil on-line monitoring device structure picture adopts distributed data transmission control and the centralized monitoring mode who shows the operation of central authorities. The large-scale wind power station has a large number of wind power units which are distributed relatively dispersedly, in order to better realize the monitoring and management of lubricating oil and obtain complete information, each wind power unit gear box is provided with a set of monitoring terminal system which comprises an online monitoring device and a data transmission and control module to obtain related data information. Every on-line monitoring device real time monitoring wind turbine generator system gear box lubricating oil state, utilize RS485 communication mode with data transmission for corresponding data transmission and control module, data transmission module passes through wireless communication and uploads to sharing cloud ware, unified a wind turbine generator system gear box lubricating oil information that shows on the online monitored control system software platform of wind turbine generator system gear box lubricating oil on the customer end, maintainer assigns corresponding control command according to the lubricating oil state, realize controlling specific equipment through the control unit in data transmission and the control module. The system integrates three modules of on-site collection, control execution and remote operation, the lubricating oil condition of the whole wind field can be seen on a software interface of one client, the centralized management of a multi-wind-field lubricating oil system is realized, the comparison and analysis of the running states of a plurality of fan devices are facilitated, and a basis is provided for close attention and visual maintenance of the next step.
EXAMPLE six
The utility model discloses a wind turbine generator system gear box lubricating oil on-line monitoring system's monitoring method uses the utility model discloses a wind turbine generator system gear box lubricating oil on-line monitoring device and system, including following step:
(1) fig. 2 is a flow chart of the use of the device for online monitoring of lubricating oil of the gearbox of the wind turbine generator in the preferred embodiment. Flushing an oil path t1 in a lubricating oil bypass and an on-line monitoring device for t1 time to ensure that no pollution particles exist in the system, installing all the devices in a gear box lubricating oil system, setting and storing the fan equipment information in on-line monitoring system software, starting an electromagnetic valve and a circulating pump, pumping lubricating oil under the dual action of a main oil pump and the circulating pump to flow through the lubricating oil bypass and the on-line monitoring device, operating client software, starting on-line detection, starting timing monitoring after a feedback result meets an actual requirement, enabling the period to be adjustable, continuously uploading the lubricating oil to a cloud server, inquiring monitoring data by the client according to requirements, processing, analyzing and displaying through a software program, and taking diagnosis and maintenance measures according to parameter information.
(2) When all modules of the system are ready, the system enters a normal working state, the client sends a read-write command, establishes a network link through a wireless communication module such as a 4G module and forwards the network link to a granularity sensor, a moisture sensor and an oil sensor in the online monitoring device; the data transmission and control module acquires real-time output data of the sensor to obtain effective information of the oil product, including viscosity, density, temperature, dielectric constant, granularity, water activity and water content real-time data; and then the wireless communication module sends the acquired information to the cloud server, so that a client software program can obtain effective oil quality monitoring data for a series of analysis work.
(3) As shown in fig. 6, the utility model relates to a wind turbine generator system gearbox lubricating oil on-line monitoring system software main program flow chart in the preferred embodiment. Initializing the software system, and completing system software loading after all modules and setting are ready; utilize the communication program part to receive the data that monitoring field transmission comes, then deposit it in the database in the cloud ware, on the one hand, when need look over lubricating oil quality information, inquire out relevant data from the high in the clouds database and carry out real-time display at user interface after compensation processing, mainly have two kinds of modes to choose from: a single-parameter real-time trend analysis curve graph and a double-parameter characteristic trend analysis curve graph; and storing the processed related data into a database for subsequent historical data or curve query. On the other hand, the software program can compare and analyze the real-time monitoring data of each parameter with a preset reference value and the requirements used by the system, evaluate the oil state, display the judgment result and prompt information, a maintainer issues a control instruction to the data transmission and control module according to the information, and the first control unit and the second control unit in the data transmission and control module effectively operate the oil filter, the oil cooler, the electromagnetic valve, the flow regulating valve and the circulating pump, so that the functions of out-of-limit alarm, fault diagnosis and maintenance suggestion are realized.

Claims (5)

1. The device for online monitoring of the lubricating oil of the gearbox of the wind turbine generator is characterized by comprising a lubricating oil bypass (12), an online monitoring device (5), a data transmission and control module (6), a cloud server (10) and a client (11); the lubricating oil bypass (12) is connected in parallel with a main oil way (9) between the outlet of the gear box (1) and the inlet of the main oil pump (2) in the lubricating oil circulating system of the gear box of the wind turbine generator and comprises an oil inlet pipeline (7) and an oil outlet pipeline (8); the online monitoring device (5) is arranged in the lubricating oil bypass (12);
the online monitoring device (5) comprises an inlet pressure gauge (501), an inlet electromagnetic valve (502), a defoaming module (503), an oil sensor (504), a water sensor (505), a pressure stabilizing buffer tank (506), a granularity sensor (507), a flow regulating valve (508), a circulating pump (509), an oil inlet (510), an oil outlet (511), a shell (512), a power supply module (513), an outlet pressure gauge (514), an outlet electromagnetic valve (515), a first monitoring pipe (516) and a second monitoring pipe (517);
the inlet pressure gauge (501) and the outlet pressure gauge (514) are respectively arranged in front of the oil inlet (510) and behind the oil outlet (511) and are arranged outside the shell (512); the inlet electromagnetic valve (502) is arranged behind the oil inlet (510) and in front of the defoaming module (503); the outlet electromagnetic valve (515) is arranged between the oil outlet (511) and the circulating pump (509); the defoaming module (503) is arranged in front of the inlet electromagnetic valve (502) and the parallel sensor; the first monitoring pipe (516) and the second monitoring pipe (517) are connected in parallel between the defoaming module (503) and the circulating pump (509); the first monitoring pipe (516) is sequentially provided with a pressure stabilizing buffer tank (506) and a granularity sensor (507); the second monitoring pipe (517) is sequentially provided with an oil sensor (504) and a moisture sensor (505); the pressure stabilizing buffer tank (506) is cylindrical, and the pipe diameter of the pressure stabilizing buffer tank is at least three times that of the second monitoring pipe (517); the circulating pump (509) is a centrifugal pump or a gear pump; the shell (512) is made of metal; the flow regulating valve; the power supply module (513) provides a stable power supply for the inlet electromagnetic valve (502), the oil product sensor (504), the moisture sensor (505), the granularity sensor (507), the flow regulating valve (508), the circulating pump (509) and the outlet electromagnetic valve (515);
the data transmission and control module (6) comprises an RS485 communication unit (603), a wireless communication unit (602), a first control unit (601) and a second control unit (604); the RS485 communication unit (603) is connected with the online monitoring device (5); the wireless communication unit (602) comprises a 4G communication module or a wifi communication module and uploads monitoring data to the cloud server (10); the first control unit (601) is respectively connected with the oil filter (3) and the oil cooler (4); the second control unit (604) is respectively connected with the inlet electromagnetic valve (502), the outlet electromagnetic valve (515), the flow regulating valve (508) and the circulating pump (509).
2. The wind turbine generator gearbox lubricating oil online monitoring device according to claim 1, wherein the lubricating oil bypass (12) and the online monitoring device shell (512) are externally designed with heat insulation layers.
3. The on-line monitoring device for the lubricating oil of the gearbox of the wind turbine generator set as claimed in claim 1, wherein the monitored parameters of the oil product sensor (504) at least comprise four items of temperature, viscosity, density and dielectric constant of the lubricating oil; monitoring parameters of the moisture sensor (505) at least comprise water content and water activity of the lubricating oil; the granularity sensor (507) monitors the granularity of the lubricating oil by adopting a shading method principle, at least sets NAS1638 and ISO4406 two particle pollution degree grade standards, and gives the particle count and the pollution degree grade of a measured sample in real time.
4. The on-line monitoring device for the lubricating oil of the gearbox of the wind turbine generator set according to claim 1, wherein a serial port is arranged in an oil product sensor (504), a moisture sensor (505) and a granularity sensor (507) in the on-line monitoring device (5), and data are transmitted to the data transmission and control module (6) through an RS485 bus.
5. The on-line monitoring device for the lubricating oil of the gearbox of the wind turbine generator set as claimed in claim 1, wherein the client (11) adopts an upper computer PC, a tablet personal computer or a mobile phone, and the software of the on-line monitoring system for the lubricating oil of the wind turbine generator set is installed in the client.
CN202120783140.6U 2021-04-16 2021-04-16 Wind turbine generator system gear box lubricating oil on-line monitoring device Active CN214699134U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112943911A (en) * 2021-04-16 2021-06-11 南京师范大学 Wind turbine generator gearbox lubricating oil online monitoring device, monitoring method and system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112943911A (en) * 2021-04-16 2021-06-11 南京师范大学 Wind turbine generator gearbox lubricating oil online monitoring device, monitoring method and system
CN112943911B (en) * 2021-04-16 2024-04-26 南京师范大学 Wind turbine generator system gear box lubricating oil on-line monitoring device, monitoring method and system

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