CN108953964B - Automatic lubrication control method for bearing of wind driven generator - Google Patents
Automatic lubrication control method for bearing of wind driven generator Download PDFInfo
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- CN108953964B CN108953964B CN201811145891.4A CN201811145891A CN108953964B CN 108953964 B CN108953964 B CN 108953964B CN 201811145891 A CN201811145891 A CN 201811145891A CN 108953964 B CN108953964 B CN 108953964B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/02—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2260/00—Fail safe
- F16N2260/02—Indicating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an automatic lubrication control method for a bearing of a wind driven generator, which comprises a lubrication pump, a lubrication oil pipe, an auxiliary junction box, a contactor and a controller, wherein the lubrication pump, the lubrication oil pipe, the auxiliary junction box, the contactor and the controller are arranged on the generator, a power signal wire and a fault alarm signal wire are arranged on the lubrication pump, the power signal wire and the fault alarm signal wire are electrically connected to the auxiliary junction box, the auxiliary junction box is electrically connected with the contactor, and a switch joint of the contactor is electrically connected with the controller. According to the lubrication method of the device, a controller is used for acquiring the rotating speed of the generator, recording the turnover times of the lubrication pump, recording the stop time T of the lubrication pump and recording the temperature data of the bearing, and the lubrication pump is started and stopped according to the setting, so that the problems that the current automatic lubrication system is easy to cause grease separation and saponification to cause blockage of a lubrication oil path or insufficient grease output are solved, and meanwhile, the problems that timing, uneven grease injection and inaccurate grease injection are also caused under the conditions that grease injection and machine unit shutdown are not powered off when the generator does not rotate are avoided.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to an automatic lubrication control method for a bearing of a wind power generator.
Background
At present, two modes exist for injecting lubricating grease into a bearing of a large wind driven generator: (1) The manual grease gun is used for injecting grease into the bearing chamber of the generator through the grease nipple and the oil delivery pipe periodically by manpower, and the injection quantity and the injection time interval of the grease are controlled manually. Its advantages are high single-time filling of fat and full discharge of waste fat. The method has the defects that the injection time interval and the injection amount are not easy to control, and the bearing is easy to run in an excessive grease or oil shortage state to cause bearing faults; in addition, the generator is generally in a static state during oiling, so that uneven lubrication is caused. (2) The automatic lubrication pump with the control board is adopted, the control board controls the daily oiling time, and the counter controls the oiling times each time so as to control the grease injection quantity of the bearings before and after the motor, and the grease is automatically injected into the bearing chamber of the motor at regular time and quantity. At present, the time interval of the automatic lubrication pump can be set to be several hours to tens of hours, and the grease injection amount is small each time. Its advantages are high time interval and accurate control of injection quantity. The method has the defects that the grease injection amount is small each time, waste grease is not easy to discharge, and the waste grease is easy to saponify to block an oil way; in addition, grease can be injected when the generator does not rotate, and timing can be performed under the condition that the machine set is stopped without power failure, so that the problems of uneven grease injection and inaccurate grease injection amount are caused.
Disclosure of Invention
In view of the above, the invention aims to solve the problems that the existing grease injection equipment and method are used for automatically lubricating and controlling the bearing of the wind driven generator, so that the problems that the grease injection amount is small, the waste grease is not easy to discharge, the waste grease is easy to saponify to block an oil way, and the grease injection is uneven and the grease injection amount is inaccurate under the condition that the machine set is stopped and the power is not cut off are solved.
The invention solves the technical problems by the following technical means:
according to the automatic lubrication device for the wind driven generator bearing, which is provided by the invention, the automatic lubrication device comprises a lubrication pump, a lubrication oil pipe, an auxiliary junction box, a contactor and a controller, wherein the lubrication pump is arranged on a generator, a power signal wire and a fault alarm signal wire are arranged on the lubrication pump, the power signal wire and the fault alarm signal wire are electrically connected to the auxiliary junction box, the auxiliary junction box is electrically connected with the contactor, and a contactor switch joint is electrically connected with the controller.
Further, the lubrication pump has a shutdown power failure memory function and a long timing capability, and the long timing is from 0 hours to 9999 hours.
Furthermore, the lubricating pump power supply signal line is also connected with a main control system of the wind generating set.
Further, two oil outlets are arranged on the lubricating pump, the two oil outlets are respectively connected with two lubricating oil pipes, the other ends of the lubricating oil pipes are respectively connected with an AS end bearing and a BS end bearing, a temperature sensor is further arranged at a position close to the oil filling port, and the temperature sensor is electrically connected with the controller.
In a second aspect, a control method for using the wind driven generator bearing automatic lubrication device includes an automatic grease injection mode and a manual grease injection mode, in the automatic grease injection mode, a controller obtains a generator rotating speed, records the turnover number of a lubrication pump, records the stop time T of the lubrication pump and records bearing temperature data, and the generator rotating speed is divided into three grades: s1, more than 400rpm, S2, between 200rpm and 400rpm, S3, less than 200rpm; the steps performed at each generator speed level are as follows:
s1, when the rotating speed of a generator is greater than 400rpm, if the turnover number of the lubricating pump is less than N and the stop time T of the lubricating pump is greater than Tn, starting the lubricating pump to operate, starting the turnover and injecting grease by the lubricating pump, accumulating the turnover number of the lubricating pump, and when the turnover number of the lubricating pump reaches N times, stopping the operation of the lubricating pump, resetting the turnover number of the lubricating pump, and accumulating the stop operation time;
s2, when the rotation speed of the generator is between 200rpm and 400rpm, the rotation speed return difference is obtained, and when the lubrication pump is in the rotation speed return difference range, the lubrication pump continuously executes instructions before the rotation speed return difference;
and S3, stopping the lubrication pump when the rotating speed of the generator is less than 200rpm, suspending the accumulated stop running time, suspending counting the turnover number of the lubrication pump and keeping the current count.
Further, the system also comprises a fault alarm program, when the rotating speed of the generator is greater than 400rpm, the turnover frequency of the lubricating pump is less than N, the stop time T of the lubricating pump is greater than Tn, after the lubricating pump starts to operate, the lubricating pump does not turn over and the time reaches a preset value, and the fault alarm program is started to remotely inform service personnel of an alarm condition through a control system.
Further, the number of times of turning over the lubricating pump
Q is the fat injection amount; i is the grease injection quantity of the lubricating pump which is turned once; d is the outer diameter of the bearing; b is the width of the bearing; y is a coefficient related to the lubrication cycle; ρ is the grease density.
Further, the automatic grease injection system further comprises a manual grease injection mode, wherein the manual grease injection mode is independent of all other control programs, all automatic grease injection mode programs stop when the manual grease injection mode is started, a lubricating pump is started manually, the manual grease injection mode is provided with a maximum time limit, and the automatic grease injection mode is automatically switched back after the maximum time limit is reached.
As can be seen from the technical scheme, compared with the prior art, the invention has the following advantages: the automatic lubrication device for the wind driven generator bearing can remotely check and monitor the starting and stopping state information, the grease injection amount and the interval time of the lubrication pump, and has accurate lubrication amount with a memory function in the power failure stop state; the automatic lubrication control method for the wind driven generator bearing automatically adjusts the grease injection quantity and the grease injection time interval according to the rotation speed of the generator and the temperature of the bearing, and solves the problems that the current automatic lubrication system is short in time interval, grease is easy to separate and saponify due to small grease injection quantity each time, and a lubrication oil way is blocked or the grease output quantity is insufficient. Meanwhile, the problems of timing, uneven grease injection and inaccurate grease injection amount under the condition that grease injection and machine set shutdown are not powered off when the generator does not rotate are avoided.
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 description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a block diagram of an automatic lubrication device for a wind turbine bearing according to the present invention;
FIG. 2 is a logic schematic diagram of the generator bearing automatic lubrication control method of the present invention;
reference numerals:
1-a lubricating oil pipe; 2-a lubrication pump; 3-auxiliary junction box; a 4-contactor; 5-a controller; 6, a generator; 61-AS end bearing; 62-BS end bearing.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
Referring to fig. 1, the embodiment provides an automatic lubrication device for a bearing of a wind driven generator, which comprises a lubrication pump 2, a lubrication pipe 1, an auxiliary junction box 3, a contactor 4 and a controller 5, wherein the lubrication pump 2 is provided with a power signal wire and a fault alarm signal wire, the power signal wire and the fault alarm signal wire are electrically connected to the auxiliary junction box 3, the auxiliary junction box 3 is electrically connected with the contactor 4, and a switch joint of the contactor 4 is electrically connected with the controller 5. The controller 5 controls the on-off of the switch of the contactor 4 to control the start and stop of the lubricating pump 2, meanwhile, a fault alarm signal line of the lubricating pump 2 is connected with the controller 5, and when the oil pipe blocks the lubricating pump 2 and can not turn over, the lubricating pump 2 sends out a fault signal to the controller 5 through the fault alarm signal line.
As a further improvement of the above embodiment, the lubricating pump 2 has a shutdown power failure memory function and a long time counting capability from 0 hours to 9999 hours. When the machine set is stopped suddenly or the lubricating pump 2 is powered down suddenly or alarms, the controller 5 records the current oiling time length and time or the current interval time length and time, the lubricating pump 2 records the turnover times, and when the machine set is powered down again, the working process is continued before power down, so that the problems of continuous grease injection or repeated grease injection or overlong interval time when power down occurs are avoided.
As a further improvement of the above embodiment, the power signal line of the lubricating pump 2 is also connected with the master control system of the wind driven generator 6 group. The generator 6 is electrified or turned off according to the rotating speed of the generator 6, so that the rotating speed of the generator 6 can be related during automatic grease injection, and the generator 6 is in a rotating state during grease injection, thereby achieving the purpose of uniform lubrication;
AS a further improvement of the above embodiment, two oil outlets are disposed on the lubricating pump 2, the two oil outlets are respectively connected with two lubricating oil pipes 1, the other ends of the lubricating oil pipes 1 are respectively connected with an AS end bearing 61 and a BS end bearing 62 of the generator 6, grease is respectively provided for the AS end bearing 61 and the BS end bearing 62 of the generator 6, a temperature sensor is further disposed near the oil inlet, and the temperature sensor is electrically connected with the controller 5. The grease can be saponified at high temperature to block the oil path, the temperature sensor is used for detecting the temperature range of the working environment, and the grease injection amount is increased when the high-temperature environment is too long, so that the waste grease can be fully discharged during grease injection.
The invention provides an automatic lubrication control method for a wind driven generator bearing, which comprises an automatic grease injection mode and a manual grease injection mode, wherein in the automatic grease injection mode, a controller 5 acquires the rotating speed of a generator 6, records the turnover times of a lubricating pump 2, records the stop time T of the lubricating pump 2 and records bearing temperature data, and the rotating speed of the generator 6 is divided into three grades: s1, more than 400rpm, S2, between 200rpm and 400rpm, S3, less than 200rpm; as shown in fig. 2, the steps performed at each generator speed level are as follows:
s1, when the rotating speed of a generator 6 is greater than 400rpm, if the turnover number of the lubricating pump 2 is less than N and the stop time T of the lubricating pump 2 is greater than Tn, starting the lubricating pump 2 to operate, starting the turnover and injecting grease by the lubricating pump 2, accumulating the turnover number of the lubricating pump 2, and when the turnover number of the lubricating pump 2 reaches N, stopping the operation of the lubricating pump 2 and resetting the turnover number, and accumulating the stop operation time;
s2, when the rotation speed of the generator 6 is between 200rpm and 400rpm, and the lubrication pump 2 is in the rotation speed return difference range, the lubrication pump 2 continuously executes instructions before the rotation speed return difference. That is, if the lubrication pump 2 is already started to operate and the rotation speed is reduced to the rotation speed return difference range, the lubrication pump 2 is continuously started to perform work; if the lubrication pump 2 is in a stop state, and the rotation speed is increased to a rotation speed return difference range, the lubrication pump 2 is still in the stop state; thereby avoiding frequent start-up and shut-down of the lubrication pump 2.
And S3, stopping the lubrication pump 2 when the rotating speed of the generator 6 is less than 200rpm, suspending the accumulated stop running time, suspending counting the turnover number of the lubrication pump 2 and keeping the current count.
As a further improvement of the above embodiment, the method further comprises a fault alarm program, when the rotation speed of the generator 6 is greater than 400rpm, the turnover number of the lubricating pump 2 is less than N, the stop time T of the lubricating pump 2 is greater than Tn, after the lubricating pump 2 starts to operate, the lubricating pump 2 does not turn over and the time reaches a preset value, and the fault alarm program is started to remotely inform service personnel of an alarm condition through a control system. And meanwhile, the remote resetting permission is set, so that operators are allowed to receive alarm prompt and then carry out resetting times with the permission, unnecessary machine set shutdown is avoided, and meanwhile, the permission of the maximum resetting times is set, so that the lubrication pump 2 is prevented from being depleted in grease but not treated.
As a further improvement of the embodiment, the interval Tn between two grease injections is larger than 2000h, and the grease injection amount is set according to the type of the selected bearing.
As a further improvement of the above embodiment, the number of times of turning over the lubricating pump
Q is the fat injection amount; i is the grease injection quantity of the lubricating pump which is turned once; d is the outer diameter of the bearing; b is the width of the bearing; y is a coefficient related to the lubrication cycle; ρ is the grease density.
As a further improvement of the above embodiment, a manual fat injection mode is also included, which mode is independent of all other control programs, and all automatic fat injection mode programs stop when the manual fat injection mode is enabled, the lubrication pump 2 is started manually, the manual fat injection mode is provided with a maximum time limit, and automatic switching back to the automatic fat injection mode is performed after the maximum time limit is reached, so that forgetting to switch back to the automatic fat injection mode after the operator sets the manual fat injection mode is prevented.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (4)
1. An automatic lubrication control method for a wind driven generator bearing is characterized by comprising the following steps of: the automatic grease injection device comprises an automatic grease injection mode and a manual grease injection mode, wherein in the automatic grease injection mode, a controller acquires the rotating speed of a generator, records the overturning times of a lubricating pump, records the stop time T of the lubricating pump and records the temperature data of a bearing, and the rotating speed of the generator is divided into three grades: s1, more than 400rpm, S2, between 200rpm and 400rpm, S3, less than 200rpm; the steps performed at each generator speed level are as follows:
s1, when the rotating speed of a generator is greater than 400rpm, if the turnover number of the lubricating pump is less than N and the stop time T of the lubricating pump is greater than Tn, starting the lubricating pump to operate, starting the turnover and injecting grease by the lubricating pump, accumulating the turnover number of the lubricating pump, and when the turnover number of the lubricating pump reaches N times, stopping the operation of the lubricating pump, resetting the turnover number of the lubricating pump, and accumulating the stop operation time;
s2, when the rotation speed of the generator is between 200rpm and 400rpm, the rotation speed return difference is obtained, and when the lubrication pump is in the rotation speed return difference range, the lubrication pump continuously executes instructions before the rotation speed return difference;
and S3, stopping the lubrication pump when the rotating speed of the generator is less than 200rpm, suspending the accumulated stop running time, suspending counting the turnover number of the lubrication pump and keeping the current count.
2. The method for controlling the automatic lubrication of the bearing of the wind driven generator according to claim 1, wherein the method comprises the following steps: the system also comprises a fault alarm program, when the rotating speed of the generator is greater than 400rpm, the turnover frequency of the lubricating pump is less than N, the stop time T of the lubricating pump is greater than Tn, after the lubricating pump starts to operate, the lubricating pump does not turn over and the time reaches a preset value, and the fault alarm program is started to remotely inform service personnel of an alarm condition through a control system.
3. The method for controlling the automatic lubrication of the bearing of the wind driven generator according to claim 2, wherein the method comprises the following steps: the number of times of turning over the lubricating pump
Q is the fat injection amount; i is the grease injection quantity of the lubricating pump which is turned once; d is the outer diameter of the bearing; b is the width of the bearing; y is a coefficient related to the lubrication cycle; ρ is the grease density.
4. A wind turbine bearing automatic lubrication control method according to claim 3, wherein: the automatic grease filling system further comprises a manual grease filling mode, wherein the manual grease filling mode is independent of all other control programs, when the manual grease filling mode is started, all automatic grease filling mode programs are stopped, a lubricating pump is started manually, the manual grease filling mode is provided with a maximum time limit, and after the maximum time limit is reached, the automatic grease filling mode is automatically switched back.
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| CN201811145891.4A CN108953964B (en) | 2018-09-29 | 2018-09-29 | Automatic lubrication control method for bearing of wind driven generator |
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| CN201811145891.4A CN108953964B (en) | 2018-09-29 | 2018-09-29 | Automatic lubrication control method for bearing of wind driven generator |
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| JP2017066936A (en) * | 2015-09-29 | 2017-04-06 | 株式会社神戸製鋼所 | Compressor |
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