CN111207204B - Online monitoring, early warning and disposal method for lubricating oil of gearbox of wind generating set - Google Patents

Abstract

The invention discloses an online monitoring, early warning and disposal method for lubricating oil of a gearbox of a wind generating set, which comprises the following steps: s1, acquiring flow information and oil quality information of an oil inlet and an oil outlet of a gearbox on site through a sensor; s2, the field control processor processes the oil product information and then transmits the processed oil product information to the background processing server for storage through the Beidou short message communication module; and S3, the background processing server compares the acquired oil product information data with a standard database, corresponding treatment is carried out according to the result, the background server carries out remote intervention treatment, and if the fault cannot be eliminated, an operator on duty comprehensively pre-judges the fault and then carries out manual remote intervention. The invention can monitor the oil product information of the lubricating oil in the gearbox on line in a nondestructive mode and can transmit monitoring data to the background server in a Beidou short message mode. If the data is abnormal, the lubricating oil is kept in a proper state through remote intervention treatment, so that the performance of the gearbox is improved, and the service life is prolonged.

Description

On-line monitoring and early warning treatment method for lubricating oil of wind turbine gearbox

technical field

The invention relates to the technical field of lubricating oil monitoring of a wind power generating set, in particular to an online monitoring and early warning method for lubricating oil of a gearbox of a wind power generating set.

Background technique

As a renewable and clean energy, wind energy is currently mainly used for wind power generation, and the megawatt-level wind turbines used can convert wind energy into electrical energy and transmit it to the grid. Among them, the gearbox gearbox is the main transmission part of the wind turbine. Once it fails and needs to be taken off the shelf for maintenance, it will have a certain impact on the economic benefits of the wind farm; the lubrication of the gearbox of the wind turbine is essential for the continuous and stable operation of the gearbox. It plays a vital role.

Since most of the wind farms are located in remote areas, the temperature difference between day and night is large. Affected by environmental factors, when the temperature is low in winter, the viscosity of the lubricating oil will increase, which will easily lead to insufficient lubrication of the lubrication parts of the gearbox. Long-term operation will Pitting corrosion, gluing and wear of the meshing surface, bearing rolling body and seat ring; when the temperature is too high in summer, if the heat dissipation of the gearbox is not good, the temperature of the oil in the gearbox will rise faster. According to the principle of thermal balance, in Under the condition of no external influence, a thermodynamic system will tend to thermal equilibrium after a long period of time. Due to the decrease in the viscosity of lubricating oil, it is not conducive to the formation of oil film on the meshing tooth surface, and the tooth surface is also prone to pitting and gluing. The above reasons lead to wind power generation. The unit gearbox is easily damaged and has a relatively short service life. In addition to the influence of oil temperature, the cleanliness of oil is also an important indicator affecting the gearbox. Therefore, it is necessary to monitor and maintain various parameters of the lubricating oil to ensure that the gearbox can work in a suitable working environment and prolong the service life. The existing monitoring methods include manual inspection, which is time-consuming and work-intensive. There are also monitoring by setting up sensors, but the geographical environment where the wind farm is located generally has no network signal or the signal is not good, so the monitoring data cannot be transmitted quickly, which also brings inconvenience to later maintenance.

Contents of the invention

The purpose of the present invention is to provide an online monitoring and early warning treatment method for lubricating oil in the gearbox of a wind power generating set, through which the information of lubricating oil can be monitored online and transmitted to the background server for feedback processing.

In order to achieve the above object, the technical solution adopted by the present invention is: comprising the following steps: S1, collecting the oil information of the oil inlet and the oil outlet of the gearbox through the oil quality online monitor, the oil information includes the temperature of the lubricating oil , pressure, oil viscosity, water content, dielectric constant, and parameter information of magnetic abrasive particles; S2. The on-site control processor processes the oil information collected from the oil inlet and outlet of the gearbox and sends it through the Beidou short report The text communication module sends it to the background processing server, and the background processing server stores the oil product information data; S3, the background processing server compares the collected oil product information data with the standard database built in the background processing server, if the collected If the oil product information data is abnormal, the corresponding treatment will be made: if the oil temperature is abnormal, the control command to adjust the oil temperature will be sent to the on-site control processor through the Beidou short message system, and the on-site control processor will control the temperature according to the control command of temperature adjustment. The lubricating oil heater or radiator is working, and the oil temperature is adjusted to the standard oil temperature range; if the pressure data is abnormal, the control command to adjust the oil pressure will be sent to the field control processor through the Beidou short message system, and the field control processor will adjust the oil pressure according to the adjustment. The temperature control command controls and adjusts the working frequency of the oil pump so that the oil pressure returns to the standard oil temperature range; if the abnormal oil temperature and oil pressure cannot return to the normal data after being processed by a remote automatic intervention process, the background server on duty will report The personnel on duty send out an alarm signal. After receiving the alarm signal and comprehensively predicting the fault, the on-duty personnel first conduct manual remote intervention and issue a control command. One or more of short messages, text messages, and WeChat send fault maintenance information to the on-site maintenance personnel in the fault area, and the on-site maintenance personnel arrive at the site for maintenance; if it prompts that the lubricating oil needs to be replaced, the background server will work on site Personnel send maintenance messages for oil change.

Further, in the step S3, the alarm signal sent by the background server to the on-duty personnel is one or more of WeChat, DingTalk, SMS and smart voice calls.

Further, the maintenance information sent to the maintenance personnel in the step S3 includes: location information of fault points, prediction results of faults, oil product information collected on site, and standard thresholds of abnormal data.

Further, in the step S3, the background processing server also highlights the abnormal data on the display screen of the control room and the work display screen of the watchman. The control room is also equipped with an audible and visual alarm, which is automatically turned on when the background processing server receives abnormal data, and prompts the attendant to handle it.

Further, the oil quality online monitor includes a main oil inlet pipe and a main oil outlet pipe, four independent branch pipelines are connected between the main oil inlet pipe and the main oil outlet pipe, and the main oil inlet pipe, the main oil outlet pipe and each There is a monitoring room on each of the branch pipelines. The monitoring rooms on the four branch pipelines are respectively equipped with oil viscosity sensors, moisture sensors, oil quality sensors and wear particle monitoring sensors. It is connected with a solenoid valve, and temperature sensors and pressure sensors are respectively installed on the main oil inlet pipe and the main oil outlet pipe. The oil viscosity sensor, moisture sensor, oil quality sensor, abrasive grain monitoring sensor, temperature sensor, pressure sensor and solenoid valve The site controller is connected. The monitoring room includes a shell base with an upper opening and a cover for installing corresponding sensors, and the cover is sealed with the shell base.

The beneficial effects of the present invention are: adopting the above method, the oil product information of the lubricating oil in the wind turbine gearbox can be monitored online non-destructively, and the monitoring data can be transmitted to the background server through the Beidou short message, and at the same time, the Beidou short message can be used to The two-way communication function realizes remote intervention control and keeps the lubricating oil in a proper state to improve the performance of the gearbox and prolong its service life. Through the method of automatic intervention first and then manual processing, the manual work intensity can be reduced, and the timely processing of faults can be ensured.

In addition, by setting monitoring oil product information on both the inlet and outlet of the gearbox lubricating oil, the monitoring data at the inlet can determine whether the lubricating oil entering the gearbox is up to standard, and the monitoring data at the outlet can judge information such as gear wear in the gearbox , which is helpful for the later maintenance of the gearbox.

Description of drawings

Fig. 1 is a schematic flow chart of the method of the present invention.

Fig. 2 is a schematic block diagram of the online monitoring, early warning and disposal system adopted in the present invention.

Fig. 3 is a structural schematic diagram of the oil quality online monitor in the present invention.

Fig. 4 is a schematic structural diagram of the first monitoring room of the online oil quality monitor in the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, an online monitoring and early warning treatment method for lubricating oil of a wind turbine gearbox in the present invention utilizes an online monitoring and early warning treatment system, as shown in Figure 2, the online monitoring and early warning treatment system includes an on-site controller 1, The Beidou short message communication module 2, the oil quality online monitor 3, the background server 5 communicated with the Beidou system 4, and the control terminal 6 connected to the server through the network. Wherein, there are two oil product quality online monitors 3, which are respectively installed and connected to the oil inlet and outlet of the gearbox of the wind power generating set. The field controller is connected with the heater 7 for heating the lubricating oil, the radiator 8 for cooling the lubricating oil and the circulating oil pump 9 for regulating the oil pressure. The field controller 1 is a PLC controller or a single-chip controller or an integrated circuit control board. The control terminal 6 is one or more of mobile phones, tablet computers, personal computers, and industrial computers.

As shown in Figure 1, the specific on-line monitoring and early warning treatment method for the lubricating oil of the wind turbine gearbox includes the following steps:

S1. On-site collection of oil information at the oil inlet and outlet of the gearbox through the oil quality online monitor. The oil information includes the temperature, pressure, oil viscosity, water content, dielectric constant and magnetic abrasive particles of the lubricating oil parameter information.

S2. The on-site control processor processes the collected oil product information at the oil inlet and outlet of the gearbox and transmits it to the background processing server through the Beidou short message communication module, and the background processing server stores the oil product information data.

S3. The background processing server compares the collected oil product information data with the standard database built in the background processing server, and if the collected oil product information data is abnormal, corresponding processing is performed.

1. If the oil temperature is abnormal, send a control instruction to adjust the oil temperature to the on-site control processor through the Beidou short message system. within the standard oil temperature range.

2. If the pressure data is abnormal, send a control instruction to adjust the oil pressure to the on-site control processor through the Beidou short message system, and the on-site control processor controls the operating frequency of the circulating oil pump according to the temperature adjustment control instruction to make the oil pressure return to the standard within the oil temperature range.

3. If the abnormal oil temperature and oil pressure cannot return to the normal data after being dealt with by a remote automatic intervention process, the back-end server sends an alarm signal to the on-duty personnel. Carry out manual remote intervention and issue control instructions. If the fault cannot be eliminated after manual intervention, and the lubricating oil needs to be replaced, one or more of Beidou short messages, SMS, and WeChat will be sent to the site in the fault area. Maintenance personnel send fault maintenance information, and on-site maintenance personnel arrive at the site for maintenance.

4. If the quality of the lubricating oil is not up to standard and prompts that the lubricating oil needs to be replaced, the background server will send the maintenance information of changing the lubricating oil to the on-site staff.

Further, in the step S3, the alarm signal sent by the background server to the on-duty personnel is one or more of WeChat, DingTalk, SMS and smart voice calls. The maintenance information sent to the maintenance personnel in the step S3 includes: fault location information, fault prediction results, oil product information collected on site, and standard thresholds for abnormal data.

Further, in the step S3, the background processing server also highlights the abnormal data on the display screen of the control room and the work display screen of the watchman. The control room is also equipped with an audible and visual alarm, which is automatically turned on when the background processing server receives abnormal data, and prompts the attendant to handle it.

In addition, the online oil quality monitor 3 described in the present invention can adopt corresponding detection sensors in the prior art. However, in order to improve the accuracy of detection, the oil quality online monitor 3 can adopt the following structure, specifically as shown in Figures 3 and 4, the oil quality online monitor 3 includes a main oil inlet pipe 31 and a main oil outlet pipe 32, the main oil inlet pipe 31 and the main oil outlet pipe 32 are connected with four independent branch pipes 33, 34, 35, 36, and the main oil inlet pipe 31, the main oil outlet pipe 32 and the four branch pipes 33, 34, 35, 36 are respectively provided with the first A monitoring room 311 , a second monitoring room 321 , a third monitoring room 331 , a fourth monitoring room 341 , a fifth monitoring room 351 , and a sixth monitoring room 361 . Temperature sensor 312, pressure sensor 322, oil viscosity The sensor 332, the moisture sensor 342, the dielectric constant sensor 352 and the abrasive particle monitoring sensor 362 are respectively connected with a solenoid valve 37 at the inlet and outlet of the monitoring room of the four branch pipelines. A temperature sensor 312 , a pressure sensor 322 , an oil viscosity sensor 332 , a moisture sensor 342 , a dielectric constant sensor 352 , a wear monitoring sensor 362 and a solenoid valve 37 are respectively connected to the field controller 1 .

Specifically, the working process of the above-mentioned oil quality online monitor 3 is as follows: during the collection work, the four branch pipelines perform independent collection sequentially, and the solenoid valves on the corresponding branch pipelines are closed during the collection process. Specifically, when the oil viscosity sensor 332 is working, the solenoid valve on the first branch pipeline is closed, and the solenoid valves corresponding to the other three branch pipelines are all opened. After the oil viscosity sensor 332 completes the collection, the corresponding solenoid valve is opened. Then close the electromagnetic valve on the second branch pipeline, the moisture sensor 342 works, collect the water content of the lubricating fluid, and open the corresponding electromagnetic valve after completion. Then close the electromagnetic valve on the third pipeline, the dielectric constant sensor 352 works for data collection, and opens the corresponding electromagnetic valve after completion. Finally, close the electromagnetic valve on the fourth pipeline, the dielectric constant sensor 352 works for data collection, and close the corresponding electromagnetic valve after completion. So cycle. In this way, the lubricating fluid flowing through the branch pipeline can be intercepted, so that the oil viscosity sensor 332, the moisture sensor 342, the dielectric constant sensor 352 and the wear particle monitoring sensor 362 can respectively detect when the lubricating fluid is in a static state, which is conducive to obtaining accurate data.

Further, the structures of the first monitoring room 311 , the second monitoring room 321 , the third monitoring room 331 , the fourth monitoring room 341 , the fifth monitoring room 351 and the sixth monitoring room 361 are the same. The specific structure of the first monitoring chamber 311 is described below. As shown in FIG. There are oil inlet 411 and oil outlet 412. The cover 42 is screwed to the housing base 41 , and a sealing ring 43 is provided between the cover 42 and the housing base 41 . In addition, quick connectors 30 are installed on the inlet of the main oil inlet pipe 31 and the outlet of the main oil outlet pipe 32 . It is convenient to connect with the lubricating oil circulation pipeline.

In this way, by adopting the online oil quality monitor 3 with the above-mentioned structure, the branch pipeline of the monitoring room can be closed by the solenoid valve, so that the detection can be performed when the lubricating oil is in a static state, and the accuracy of the detection result can be improved.

The above content is only used to illustrate the technical solution of the present invention. Simple modifications or equivalent replacements to the technical solution of the present invention by those skilled in the art will not depart from the essence and scope of the technical solution of the present invention.

Claims (7)

1. The on-line monitoring, early warning and disposal method for the lubricating oil of the gearbox of the wind generating set is characterized by comprising the following steps of: the method comprises the following steps:

s1, collecting oil product information of an oil inlet and an oil outlet of a gearbox on site through an oil product quality online monitor, wherein the oil product information comprises the temperature, pressure, oil viscosity, water content, dielectric constant and parameter information of magnetic abrasive particles of lubricating oil;

s2, the field control processor processes the collected oil product information of the oil inlet and the oil outlet of the gearbox and then transmits the processed oil product information to the background processing server through the Beidou short message communication module, and the background processing server stores the oil product information data;

s3, the background processing server compares the collected oil product information data with a standard database built in the background processing server, and if the collected oil product information data is abnormal, corresponding processing is carried out: if the oil temperature is abnormal, sending a control instruction for adjusting the oil temperature to the field control processor through the Beidou short message system, controlling the lubricating oil heater or the radiator to work by the field control processor according to the control instruction for adjusting the temperature, and adjusting the oil temperature to be in a standard oil temperature interval;

if the pressure data is abnormal, a control instruction for adjusting the oil pressure is sent to the field control processor through the Beidou short message system, and the field control processor controls and adjusts the working frequency of the oil pump according to the control instruction for adjusting the temperature so that the oil pressure returns to the standard oil temperature interval;

if the oil temperature is abnormal and the oil pressure is abnormal and cannot return to a background server of normal data after being processed by a remote automatic intervention flow, an alarm signal is sent to an attendant, the attendant receives the alarm signal, comprehensively pre-judges the fault, firstly carries out manual remote intervention, sends a control instruction, if the fault cannot be eliminated after manual intervention and the lubricating oil needs to be replaced, sends fault maintenance information to field maintenance personnel in a fault area through one or more of Beidou short messages, short messages and WeChat, and the field maintenance personnel arrive at the field to carry out maintenance;

and if the prompt is that the lubricating oil needs to be replaced, the background server sends maintenance information of replacing the lubricating oil to field workers.

2. The on-line monitoring, early warning and disposal method for the lubricating oil of the gearbox of the wind generating set according to claim 1, characterized by comprising the following steps of: in the step S3, the alarm signal sent by the background server to the attendant is one or more of WeChat, nail, short message and intelligent voice telephone.

3. The on-line monitoring, early warning and disposal method for the lubricating oil of the gearbox of the wind generating set according to claim 1, characterized by comprising the following steps of: the maintenance information sent to the maintenance staff in the step S3 includes: fault point position information, fault pre-judging results, oil product information acquired on site and standard threshold values of abnormal data.

4. The on-line monitoring, early warning and disposal method for the lubricating oil of the gearbox of the wind generating set according to claim 1, characterized in that: in the step S3, the background processing server further highlights the abnormal data on a display screen of the control room and a display screen of a worker on duty.

5. The on-line monitoring, early warning and disposal method for the lubricating oil of the gearbox of the wind generating set according to claim 4, characterized by comprising the following steps of: and an audible and visual alarm is also arranged in the control room, and is automatically started when the background processing server receives abnormal data to prompt a person on duty to process.

6. The on-line monitoring, early warning and disposal method for the lubricating oil of the gearbox of the wind generating set according to any one of claims 1 to 5, characterized by comprising the following steps of: oil quality on-line monitoring ware includes that the owner advances oil pipe and main oil pipe, the owner advances to be equipped with four independent branch pipelines between oil pipe and the main oil pipe, advance oil pipe in the owner, all be equipped with a monitoring room on main oil pipe and every branch pipeline, install fluid viscosity sensor in the monitoring room on four branch pipelines respectively, moisture sensor, oil sensor and grit monitoring sensor, still be connected with a solenoid valve respectively on the exit of the monitoring room of four branch pipelines, install temperature sensor and pressure sensor on main oil pipe and the main oil pipe of advancing respectively, fluid viscosity sensor, moisture sensor, oil sensor, grit monitoring sensor, temperature sensor, pressure sensor and solenoid valve respectively with the field control treater links to each other.

7. The on-line monitoring, early warning and disposal method for the lubricating oil of the gearbox of the wind generating set according to claim 6, characterized by comprising the following steps of: the monitoring chamber comprises a shell seat with an upper opening and a sealing cover used for installing a corresponding sensor, and the sealing cover is connected with the shell seat in a sealing mode.

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