CN103925170A - Lubricating grease injecting method and lubricating system of variable pitch bearing of wind turbine generator - Google Patents
Lubricating grease injecting method and lubricating system of variable pitch bearing of wind turbine generator Download PDFInfo
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- CN103925170A CN103925170A CN201410174302.0A CN201410174302A CN103925170A CN 103925170 A CN103925170 A CN 103925170A CN 201410174302 A CN201410174302 A CN 201410174302A CN 103925170 A CN103925170 A CN 103925170A
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Abstract
The invention provides a lubricating grease injecting method of a variable pitch bearing of a wind turbine generator. The method includes the steps that whether pitch varying of the wind turbine generator is needed or not is detected; if the pitch varying of the wind turbine generator is not needed, a grease injecting pump is controlled to stop injecting grease to the variable pitch bearing. When pitch varying of the wind turbine generator is not performed, in other words, when the variable pitch bearing does not run or the wind turbine generator shuts down for a long time, grease injection of the wind turbine generator is stopped, and therefore grease locally accumulated in a rolling way of the bearing can be reduced, resistance of a grease channel in the bearing is reduced in the grease injection process, and the grease leakage caused when the variable pitch bearing is sealed is reduced. The invention further provides a lubricating system of the variable pitch bearing of the wind turbine generator. The lubricating system comprises a grease injecting pump used for injecting grease to the variable pitch bearing, a detector capable of detecting whether pitch varying of the wind turbine generator is needed or not and whether a pitch varying signal needs to be transmitted or not, and a first controller used for receiving the pitch varying signal and respectively connected with the variable pitch bearing, the grease injecting pump and the detector, and when pitch varying of the wind turbine generator is not needed, the grease injecting pump is controlled by the first controller to stop injecting grease to the variable pitch bearing.
Description
Technical field
The present invention relates to technical field of wind power generation, more particularly, relate to a kind of lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings, the invention still further relates to a kind of lubrication system of wind-powered electricity generation unit pitch variable bearings.
Background technique
The pitch variable bearings of Large-scale Wind Turbines lubricates and all adopts centralized lubrication at present, its greasing amount and greasing time are controlled by the intrinsic control system of lubrication system itself, no matter be whether pitch variable bearings turns round, as long as external electrical network is normal, blower fan master control is its power transmission, and centralized lubrication is all pitch variable bearings greasing by the time lag setting and greasing amount.Although guaranteed lubricated uniformity, pitch variable bearings do not turn round or the long-time outage state of unit under, centralized lubrication, still by its fixed routine greasing, more easily causes local grease in bearing race to pile up, and has increased the resistance of grease channel in raceway; When the resistance of grease channel is greater than the hermetic resistance of bearing sealed ring, under the effect of greasing thrust, grease can leak from the seal ring between bearing enclose, and then pollute wind wheel internal environment, and be not easy to the conventional maintenance of blower fan, there is potential safety hazard simultaneously.
In sum, how to reduce the grease of local accumulation in bearing race, the resistance of bearing internal grease passage when reducing greasing, thus reduce the situation that fat is leaked in pitch variable bearings sealing, be current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings, to reduce the grease of local accumulation in bearing race, thus the resistance of bearing internal grease passage while reducing greasing, and then reduce the situation that fat is leaked in pitch variable bearings sealing.
Another object of the present invention is to provide a kind of lubrication system of wind-powered electricity generation unit pitch variable bearings, to reduce the grease of local accumulation in bearing race, thus the resistance of bearing internal grease passage while reducing greasing, and then reduce the situation that fat is leaked in pitch variable bearings sealing.
In order to achieve the above object, the invention provides following technological scheme:
A lubricated grease injection method for wind-powered electricity generation unit pitch variable bearings, comprising:
Detect wind-powered electricity generation unit and whether need to become oar;
If described wind-powered electricity generation unit does not need to become oar, control greasing pump and stop to pitch variable bearings greasing.
Preferably, the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings also comprises:
According to the volume of fuel tank of year greasing demand of described pitch variable bearings and lubrication system, calculate described pitch variable bearings required default greasing amount within the default greasing cycle;
According to described pitch variable bearings required default greasing amount within the described default greasing cycle, obtain the default greasing time of described greasing pump;
Record the accumulation greasing time of described grease pump within the described default greasing cycle;
If described wind-powered electricity generation unit need to become oar, when the described accumulation greasing time, be less than described default greasing during the time, control described pitch variable bearings and the run-in synchronism of described greasing pump, when the described accumulation greasing time, reach described default greasing during the time, control described pitch variable bearings running, control described greasing pump simultaneously and stop to described pitch variable bearings greasing.
Preferably, the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings also comprises:
Accumulating the greasing time described in reach described default greasing week after date is less than described default greasing during the time, and in next default greasing cycle that described grease pump remaining greasing time within this default greasing cycle is added to, described greasing pump is in required next default greasing time.
Preferably, in the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings, the described default greasing cycle is one month.
Preferably, the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings also comprises:
If continuous four of described wind-powered electricity generation unit does not monthlyly complete default greasing amount; in the time of five month, control described wind-powered electricity generation compressor emergency shutdown; control described pitch variable bearings and the run-in synchronism of described greasing pump simultaneously; make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, until complete the greasing of a month residue greasing amount.
Preferably, the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings also comprises:
When described wind-powered electricity generation unit need to become oar and the described accumulation greasing time is less than described default greasing during the time, detect the grease pressure of the lubricating pipe of lubrication system, when described grease pressure is greater than preset pressure, controls described greasing pump and stop to described pitch variable bearings greasing.
From above-mentioned technological scheme, can find out, whether the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings provided by the invention needs to become oar by detecting wind-powered electricity generation unit, if wind-powered electricity generation unit does not need to become oar, controls greasing pump and stops to pitch variable bearings greasing.
The present invention is when the constant oar of wind-powered electricity generation unit; namely under the state that pitch variable bearings does not turn round or unit is shut down for a long time; stop to pitch variable bearings greasing; so can reduce the grease of local accumulation in bearing race; the resistance of bearing internal grease passage while having reduced greasing, leaks the situation of fat thereby reduced pitch variable bearings sealing, and then has improved the cleaning of wind wheel internal operating environment; the conventional maintenance of being convenient to blower fan, has reduced potential safety hazard.
Lubricated grease injection method based on above-mentioned wind-powered electricity generation unit pitch variable bearings, the present invention also provides a kind of lubrication system of wind-powered electricity generation unit pitch variable bearings, comprises for the greasing pump to pitch variable bearings greasing, also comprises:
Whether can detect wind-powered electricity generation unit needs to become oar and sends the detector that becomes oar signal;
For receiving described change oar signal the first controller of being connected with described detector with described pitch variable bearings, described greasing pump respectively, when described wind-powered electricity generation unit does not need to become oar described in the first controller control described greasing pump and stop to described pitch variable bearings greasing.
Preferably, above-mentioned lubrication system also comprises that the described time relay is connected with described the first controller for recording the described grease pump time relay of the accumulation greasing time within the default greasing cycle; When described wind-powered electricity generation unit need to become oar and the described accumulation greasing time is less than the default greasing of described grease pump within the described default greasing cycle during time, described the first controller is controlled described pitch variable bearings and the run-in synchronism of described greasing pump; When the described accumulation greasing time, reach described default greasing during the time, described the first controller is controlled described pitch variable bearings running, controls described greasing pump simultaneously and stops to described pitch variable bearings greasing; Accumulating the greasing time described in reach described default greasing week after date is less than described default greasing during the time, and described the first controller is added to described greasing pump in next default greasing cycle in required next default greasing time by described grease pump remaining greasing time within this default greasing cycle.
Preferably, in above-mentioned lubrication system, the described default greasing cycle is one month;
And described lubrication system also comprises:
The second controller being connected with the described time relay, described pitch variable bearings, described greasing pump and described wind-powered electricity generation unit respectively; if continuous four of described wind-powered electricity generation unit does not monthlyly complete default greasing amount; described second controller was controlled described wind-powered electricity generation compressor emergency shutdown in the time of five month; control described pitch variable bearings and the run-in synchronism of described greasing pump simultaneously; make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, until complete the greasing of a month residue greasing amount.
Preferably, in above-mentioned lubrication system, described the first controller and described second controller are all integrated on the blower fan master control borad of described wind-powered electricity generation unit;
Described lubrication system also comprises the safety valve being arranged on lubrication piping, and described lubrication piping is communicated with the grease channel of described pitch variable bearings inside.
From above-mentioned technological scheme, can find out, the lubrication system of wind-powered electricity generation unit pitch variable bearings provided by the invention comprises greasing pump, detector and the first controller; Wherein, greasing pump is used for to pitch variable bearings greasing, and whether detector can detect wind-powered electricity generation unit needs to become oar and send change oar signal; The first controller is used for receiving change oar signal and is connected with detector with pitch variable bearings, greasing pump respectively, and when wind-powered electricity generation unit does not need to become oar, the first controller control greasing pump does not stop to pitch variable bearings greasing.
Whether lubrication system of the present invention detects wind-powered electricity generation unit by detector needs to become oar, if wind-powered electricity generation unit does not need to become oar, utilizes the first controller to control greasing pump and stops to pitch variable bearings greasing.The present invention is when the constant oar of wind-powered electricity generation unit; namely under the state that pitch variable bearings does not turn round or unit is shut down for a long time; stop to pitch variable bearings greasing; so can reduce the grease of local accumulation in bearing race; the resistance of bearing internal grease passage while having reduced greasing, leaks the situation of fat thereby reduced pitch variable bearings sealing, and then has improved the cleaning of wind wheel internal operating environment; the conventional maintenance of being convenient to blower fan, has reduced potential safety hazard.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flowage structure schematic diagram of the lubricated grease injection method of the wind-powered electricity generation unit pitch variable bearings that provides of the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings, has reduced the grease of local accumulation in bearing race, thus the resistance of bearing internal grease passage while having reduced greasing, and then reduced the situation that fat is leaked in pitch variable bearings sealing.
For making object, technological scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to accompanying drawing 1, the lubricated grease injection method of the wind-powered electricity generation unit pitch variable bearings that the embodiment of the present invention provides comprises: whether need become oar, if wind-powered electricity generation unit does not need to become oar, control greasing pump and stop to pitch variable bearings greasing if detecting wind-powered electricity generation unit.
The present invention is when the constant oar of wind-powered electricity generation unit; namely at pitch variable bearings, do not turn round or long-time shutdown of unit is that the Internal and external cycle of pitch variable bearings is all under relatively static state; stop to pitch variable bearings greasing; so can reduce the grease of local accumulation in bearing race; the resistance of bearing internal grease passage while having reduced greasing, leaks the situation of fat thereby reduced pitch variable bearings sealing, and then has improved the cleaning of wind wheel internal operating environment; the conventional maintenance of being convenient to blower fan, has reduced potential safety hazard.
In addition, the present invention can also make waste oil discharge from the flow direction of designing requirement, has guaranteed the integrity of bearing seal.
In the present invention's one preferred embodiment, the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings comprises the following steps:
S1, calculate the default greasing time of pitch variable bearings within the default greasing cycle, and record the accumulation greasing time of grease pump within the default greasing cycle:
The present embodiment calculates pitch variable bearings required default greasing amount within the default greasing cycle according to the volume of fuel tank of year greasing demand of pitch variable bearings and lubrication system; Owing to choosing after the model of greasing pump, just determined the amount of its unit time greasing, so the default greasing time can the amount divided by the time greasing of greasing infusion pump unit be obtained by above-mentioned default greasing amount;
Because the amount of greasing infusion pump unit time greasing is determined, so accumulate by record the actual greasing amount that the greasing time can obtain greasing pump;
Whether S2, detection wind-powered electricity generation unit need to become oar;
If S3 wind-powered electricity generation unit does not need to become oar, control greasing pump and stop to pitch variable bearings greasing; If wind-powered electricity generation unit need to become oar, namely pitch variable bearings, when operating condition, judges whether the accumulation greasing time of grease pump within the default greasing cycle is less than the default greasing time;
If the S4 accumulation greasing time is less than the default greasing time, control pitch variable bearings and the run-in synchronism of greasing pump; Otherwise, control pitch variable bearings running, control greasing pump simultaneously and stop to pitch variable bearings greasing.
The present invention, when the constant oar of wind-powered electricity generation unit, stops to pitch variable bearings greasing; So can reduce the grease of local accumulation in bearing race, the resistance of bearing internal grease passage while having reduced greasing, thus reduced the situation that fat is leaked in pitch variable bearings sealing.Simultaneously when wind-powered electricity generation set pitch control, whether the actual greasing amount of judging grease pump reaches default greasing amount, when actual greasing amount is less than default greasing amount, control pitch variable bearings and the run-in synchronism of greasing pump (specifically, by switching on to becoming oar drive motor, driving pitch variable bearings running); When actual greasing amount reaches default greasing amount, only control pitch variable bearings running, can avoid carrying out too much greasing within a default greasing cycle.
It will be appreciated by persons skilled in the art that above-mentioned steps S1 can also carry out after step S2, the present invention can also not carry out step S1 and S4, at needs, becomes oar time control grease pump processed and pitch variable bearings synchronously rotates.
Preferably, the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings also comprises: when reaching the default after date accumulation greasing time in greasing week, be less than default greasing during the time, in next default greasing cycle that grease pump remaining greasing time within this default greasing cycle is added to, greasing pump is in required next default greasing time.That is to say, the present invention counts the uncompleted greasing time in upper one default greasing cycle in next greasing time automatically, uncompleted greasing amount is injected in pitch variable bearings by next default greasing cycle, can control preferably the greasing amount in a year, and then meet the year greasing amount requirement of pitch variable bearings.
The above-mentioned default greasing cycle can be one month, two months or three months, and in order to control preferably greasing amount, the above-mentioned default greasing cycle is preferably one month.It is a unit of measurement that time period in minimum January is take in the present invention, according to year greasing demand of pitch variable bearings and the volume of fuel tank of lubrication system, can calculate the pitch variable bearings default greasing amount required at month, and then calculate the default greasing time of greasing pump in one month.
When wind-powered electricity generation unit need to become oar, if the accumulation greasing time of grease pump in one month is less than the default greasing time, control pitch variable bearings and the run-in synchronism of greasing pump; If the accumulation greasing time of grease pump in one month reaches the default greasing time, control pitch variable bearings running, control greasing pump simultaneously and stop to pitch variable bearings greasing, can avoid carrying out too much greasing in one month.After reaching one month, the accumulation greasing time of grease pump is less than the default greasing time, that is to say when actual greasing amount does not reach default greasing amount, the greasing pump in next month of grease pump remaining greasing time within this month being added to is in required default greasing time, upper one month uncompleted greasing amount can be injected in pitch variable bearings in next month, can control preferably the greasing amount in a year, and then meet the year greasing amount requirement of pitch variable bearings.
In order to control better greasing amount; in the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings; if continuous four of wind-powered electricity generation unit does not monthlyly complete default greasing amount; and the mean wind velocity≤3m/s, master control and the lubrication system self check that meet 10 minutes are normal, external power supply under normal circumstances; in the time of five month, controlling wind turbine group shuts down; control pitch variable bearings and the run-in synchronism of greasing pump simultaneously; make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, until complete the greasing of a month residue greasing amount.The present invention is in the situation that the initiatively greasing of all less startup of greasing amount of continuous four months, automatically start and become oar drive motor and greasing pump, make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, before completing, remain the greasing of greasing amount, after completing, unit enters the greasing cycle next time automatically.If can not complete, the greasing time of difference counts in the greasing demand of this month or next month automatically.So, can guarantee that pitch variable bearings obtains enough greasing amounts, to meet a year greasing demand, improve the working life of pitch variable bearings.
Further, in the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings, when wind-powered electricity generation unit need to become oar and the accumulation greasing time is less than default greasing during the time, detect the grease pressure of the lubricating pipe of lubrication system, when grease pressure is greater than preset pressure, controls greasing pump and stop to pitch variable bearings greasing.The present invention monitors the flowing state of lubricating pipe by detecting the grease pressure of lubricating pipe, when lubricating pipe can occur to stop up, be that grease pressure is while being greater than preset pressure, remind in time maintainer to keep in repair fault, guaranteed the reliability that pitch variable bearings is lubricated.
In the lubricated grease injection method of above-mentioned wind-powered electricity generation unit pitch variable bearings, if there are parts damages in unit operation, compressor emergency shutdown, but outer net and master control are normal, the monthly demand continuation of the accumulation greasing time of greasing pump adds up, when normally moving, continues unit to carry out: if there is outer net fault, master control power-off, restarts greasing timing while again switching on; If there is lubrication system fault in unit operation, automatically terminate synchronizeing of lubricant pump and pitch motor, unit is normally operation still, waits to occur maintainable opportunity, has solved after lubricant pump fault, continues to carry out according to step S2-S4; If do not reach because lubricant pump fault causes this month greasing amount, automatically count next month.
The embodiment of the present invention also provides a kind of lubrication system of wind-powered electricity generation unit pitch variable bearings to comprise greasing pump, detector and the first controller; Wherein, greasing pump is used for to pitch variable bearings greasing, and whether detector can detect wind-powered electricity generation unit needs to become oar and send change oar signal; The first controller is used for receiving change oar signal and is connected with detector with pitch variable bearings, greasing pump respectively, and when wind-powered electricity generation unit does not need to become oar, the first controller control greasing pump does not stop to pitch variable bearings greasing.
Whether lubrication system of the present invention detects wind-powered electricity generation unit by detector needs to become oar, if wind-powered electricity generation unit does not need to become oar, utilizes the first controller to control greasing pump and stops to pitch variable bearings greasing.The present invention is when the constant oar of wind-powered electricity generation unit; namely under the state that pitch variable bearings does not turn round or unit is shut down for a long time; stop to pitch variable bearings greasing; so can reduce the grease of local accumulation in bearing race; the resistance of bearing internal grease passage while having reduced greasing, leaks the situation of fat thereby reduced pitch variable bearings sealing, and then has improved the cleaning of wind wheel internal operating environment; the conventional maintenance of being convenient to blower fan, has reduced potential safety hazard.
Preferably, above-mentioned lubrication system also comprises that this time relay is connected with the first controller for recording the grease pump time relay of the accumulation greasing time within the default greasing cycle; When wind-powered electricity generation unit need to become oar and the accumulation greasing time is less than the default greasing of grease pump within the default greasing cycle during time, the first controller is controlled pitch variable bearings and the run-in synchronism of greasing pump; When the accumulation greasing time, reach default greasing during the time, the first controller is controlled pitch variable bearings running, controls greasing pump simultaneously and stops to pitch variable bearings greasing; When reaching the default after date accumulation greasing time in greasing week, be less than default greasing during the time, the first controller is added to greasing pump in next default greasing cycle in required next default greasing time by grease pump remaining greasing time within this default greasing cycle.
The present invention is when wind-powered electricity generation set pitch control, utilize the time relay to record the accumulation greasing time of grease pump within the default greasing cycle, by accumulation greasing time and the comparison of default greasing time, whether the actual greasing amount of judging grease pump reaches default greasing amount, when actual greasing amount is less than default greasing amount, utilize the first controller to control pitch variable bearings and greasing pump run-in synchronism (specifically, by switching on to becoming oar drive motor, driving pitch variable bearings running); When actual greasing amount reaches default greasing amount, utilize the first controller to control pitch variable bearings running, can avoid carrying out too much greasing within a default greasing cycle.When reaching the default after date accumulation greasing time in greasing week, be less than default greasing during the time, utilize the first controller that grease pump remaining greasing time within this default greasing cycle is added to greasing pump in next default greasing cycle in required next default greasing time, can control preferably the greasing amount in a year, and then meet the year greasing amount requirement of pitch variable bearings.
The above-mentioned default greasing cycle can be one month, two months or three months, and in order to control preferably greasing amount, the above-mentioned default greasing cycle is preferably one month.It is a unit of measurement that time period in minimum January is take in the present invention, according to year greasing demand of pitch variable bearings and the volume of fuel tank of lubrication system, can calculate the pitch variable bearings default greasing amount required at month, and then calculate the default greasing time of greasing pump in one month.
When wind-powered electricity generation unit need to become oar, if the accumulation greasing time of grease pump in one month is less than the default greasing time, utilize the first controller to control pitch variable bearings and the run-in synchronism of greasing pump; If the accumulation greasing time of grease pump in one month reaches the default greasing time, utilize the first controller to control pitch variable bearings running, control greasing pump simultaneously and stop to pitch variable bearings greasing, can avoid carrying out too much greasing in one month.After reaching one month, the accumulation greasing time of grease pump is less than the default greasing time, that is to say when actual greasing amount does not reach default greasing amount, utilize the first controller that grease pump remaining greasing time within this month is added to greasing pump in next month in required default greasing time, upper one month uncompleted greasing amount can be injected in pitch variable bearings in next month, can control preferably the greasing amount in a year, and then meet the year greasing amount requirement of pitch variable bearings.
In order to control better greasing amount, lubrication system also comprises the second controller being connected with the time relay, pitch variable bearings, greasing pump and wind-powered electricity generation unit respectively.If continuous four of wind-powered electricity generation unit does not monthlyly complete default greasing amount; and the mean wind velocity≤3m/s, master control and the lubrication system self check that meet 10 minutes are normal, external power supply under normal circumstances; utilizing second controller in the time of five month, to control wind turbine group shuts down; control pitch variable bearings and the run-in synchronism of greasing pump simultaneously; make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, until complete the greasing of a month residue greasing amount.The present invention is in the situation that the initiatively greasing of all less startup of greasing amount of continuous four months, automatically start and become oar drive motor and greasing pump, make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, before completing, remain the greasing of greasing amount, after completing, unit enters the greasing cycle next time automatically.If can not complete, the greasing time of difference counts in the greasing demand of this month or next month automatically.So, can guarantee that pitch variable bearings obtains enough greasing amounts, to meet a year greasing demand, improve the working life of pitch variable bearings.
For the ease of controlling, above-mentioned the first controller and second controller are all integrated on the blower fan master control borad of wind-powered electricity generation unit; Can utilize like this blower fan master control borad to control respectively operating condition and the default greasing time of greasing pump, relatively simple for structure.
Lubrication system also comprises the safety valve being arranged on lubrication piping, and lubrication piping is communicated with the grease channel of pitch variable bearings inside.When the grease pressure of lubrication piping is larger, grease can overflow from safety valve, and then can reduce grease pressure, thereby reduces the oil quantity of revealing from the seal ring between bearing enclose.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiments, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To these embodiments' multiple modification, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a lubricated grease injection method for wind-powered electricity generation unit pitch variable bearings, is characterized in that, comprising:
Detect wind-powered electricity generation unit and whether need to become oar;
If wind-powered electricity generation unit does not need to become oar, control greasing pump and stop to pitch variable bearings greasing.
2. the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings as claimed in claim 1, is characterized in that, also comprises:
According to the volume of fuel tank of year greasing demand of described pitch variable bearings and lubrication system, calculate described pitch variable bearings required default greasing amount within the default greasing cycle;
According to described pitch variable bearings required default greasing amount within the described default greasing cycle, obtain the default greasing time of described greasing pump;
Record the accumulation greasing time of described grease pump within the described default greasing cycle;
If described wind-powered electricity generation unit need to become oar, when the described accumulation greasing time, be less than described default greasing during the time, control described pitch variable bearings and the run-in synchronism of described greasing pump, when the described accumulation greasing time, reach described default greasing during the time, control described pitch variable bearings running, control described greasing pump simultaneously and stop to described pitch variable bearings greasing.
3. the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings as claimed in claim 2, is characterized in that, also comprises:
Accumulating the greasing time described in reach described default greasing week after date is less than described default greasing during the time, and in next default greasing cycle that described grease pump remaining greasing time within this default greasing cycle is added to, described greasing pump is in required next default greasing time.
4. the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings as claimed in claim 3, is characterized in that, the described default greasing cycle is one month.
5. the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings as claimed in claim 4, is characterized in that, also comprises:
If continuous four of described wind-powered electricity generation unit does not monthlyly complete default greasing amount; in the time of five month, control described wind-powered electricity generation compressor emergency shutdown; control described pitch variable bearings and the run-in synchronism of described greasing pump simultaneously; make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, until complete the greasing of a month residue greasing amount.
6. the lubricated grease injection method of wind-powered electricity generation unit pitch variable bearings as claimed in claim 2, is characterized in that, also comprises:
When described wind-powered electricity generation unit need to become oar and the described accumulation greasing time is less than described default greasing during the time, detect the grease pressure of the lubricating pipe of lubrication system, when described grease pressure is greater than preset pressure, controls described greasing pump and stop to described pitch variable bearings greasing.
7. a lubrication system for wind-powered electricity generation unit pitch variable bearings, comprises for the greasing pump to pitch variable bearings greasing, it is characterized in that, also comprises:
Whether can detect wind-powered electricity generation unit needs to become oar and sends the detector that becomes oar signal;
For receiving described change oar signal the first controller of being connected with described detector with described pitch variable bearings, described greasing pump respectively, when described wind-powered electricity generation unit does not need to become oar described in the first controller control described greasing pump and stop to described pitch variable bearings greasing.
8. lubrication system as claimed in claim 7, is characterized in that, also comprises that the described time relay is connected with described the first controller for recording the described grease pump time relay of the accumulation greasing time within the default greasing cycle; When described wind-powered electricity generation unit need to become oar and the described accumulation greasing time is less than the default greasing of described grease pump within the described default greasing cycle during time, described the first controller is controlled described pitch variable bearings and the run-in synchronism of described greasing pump; When the described accumulation greasing time, reach described default greasing during the time, described the first controller is controlled described pitch variable bearings running, controls described greasing pump simultaneously and stops to described pitch variable bearings greasing; Accumulating the greasing time described in reach described default greasing week after date is less than described default greasing during the time, and described the first controller is added to described greasing pump in next default greasing cycle in required next default greasing time by described grease pump remaining greasing time within this default greasing cycle.
9. lubrication system as claimed in claim 8, is characterized in that, the described default greasing cycle is one month;
And described lubrication system also comprises:
The second controller being connected with the described time relay, described pitch variable bearings, described greasing pump and described wind-powered electricity generation unit respectively; if continuous four of described wind-powered electricity generation unit does not monthlyly complete default greasing amount; described second controller was controlled described wind-powered electricity generation compressor emergency shutdown in the time of five month; control described pitch variable bearings and the run-in synchronism of described greasing pump simultaneously; make the propeller pitch angle of blade between 20 °-89 °, back and forth become oar, until complete the greasing of a month residue greasing amount.
10. lubrication system as claimed in claim 9, is characterized in that, described the first controller and described second controller are all integrated on the blower fan master control borad of described wind-powered electricity generation unit;
Described lubrication system also comprises the safety valve being arranged on lubrication piping, and described lubrication piping is communicated with the grease channel of described pitch variable bearings inside.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN201510163712.XA CN105041579A (en) | 2014-04-28 | 2015-04-08 | Lubricating grease adding method and lubricating system for pitch bearing of wind turbine generator system |
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| CN105863974A (en) * | 2016-04-06 | 2016-08-17 | 北京天诚同创电气有限公司 | Gear lubricating method and system of wind generating set and wind generating set |
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| CN105863974A (en) * | 2016-04-06 | 2016-08-17 | 北京天诚同创电气有限公司 | Gear lubricating method and system of wind generating set and wind generating set |
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