CN103629278B - Locking hydraulic system of wind driven generator - Google Patents
Locking hydraulic system of wind driven generator Download PDFInfo
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- CN103629278B CN103629278B CN201310596566.0A CN201310596566A CN103629278B CN 103629278 B CN103629278 B CN 103629278B CN 201310596566 A CN201310596566 A CN 201310596566A CN 103629278 B CN103629278 B CN 103629278B
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- driven generator
- wind
- hydraulic system
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- 238000005336 cracking Methods 0.000 claims description 22
- 239000000446 fuel Substances 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 71
- 239000010720 hydraulic oil Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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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- Wind Motors (AREA)
Abstract
The embodiment of the invention discloses a locking hydraulic system of a wind driven generator, and relates to the technical field of wind power generation equipment. The locking hydraulic system of the wind driven generator comprises a manual pump, wherein a rotor locking oil way and a rotor braking oil way are connected to the outlet of the manual pump in parallel, a sequence valve is connected in series in the rotor locking oil way, and the tail end of the rotor locking oil way is communicated with a locking device; and the tail end of the rotor braking oil path is connected with a control port of the sequence valve. The invention is mainly applied to wind driven generators.
Description
Technical field
The present invention relates to technical field of wind power generating equipment, particularly relate to a kind of wind-driven generator locking hydraulic system.
Background technique
Wind-driven generator is a kind of is the equipment of electric energy by wind energy transformation, primarily of compositions such as blade, generator, mechanical part and electric components.After workmen has assembled wind-driven generator or in transport wind generator, usually need by the locked rotor of locking device by generator, to make it not rotate, to guarantee the safety of equipment.At present, this locking device is driven by hydraulic system, when after wind-driven generator lifting, is removed the locking of rotor, make it rotate freely by locking device.Usually, after wind-driven generator lifting and when can normally work, this hydraulic system relies on electric power to drive locking device.But in the lifting early stage of wind-driven generator, because electric power system can't access wind-driven generator, therefore this hydraulic system needs to rely on hydraulic hand-pump to carry out manual drives locking device.
As shown in Figure 1, when wind-driven generator missed electric or without in electric situation, when needs carry out rotor brake, lock operation, manually-operable selector valve 11 ＇, the handle of artificial shake hand pump 1 ＇, hydraulic oil is inputted working connection and accumulator 17 ＇, hydraulic oil is by entering rotor brake 12 ＇ after reduction valve 8 ＇, one-way valve 9 ＇, throttle valve 10 ＇ and selector valve 11 ＇ simultaneously, realizes the braking of rotor.After hydraulic oil makes rotor brake 12 ＇ reach braking state, manually-operable selector valve 5 ＇, when the pressure of hydraulic oil reaches the setting pressure of sequence valve 3 ＇, sequence valve 3 ＇ is communicated with locked rotor oil circuit 20 ＇, now hydraulic oil enters rotor locking device 6 ＇ after throttle valve 4 ＇, selector valve 5 ＇, realizes locking or the unblock of rotor.In this During manual operation, in order to ensure that sequence valve 3 ＇ remains opening state, hand pump 1 ＇ under high pressure works all the time, so not only making operator operate effort, time-consuming (curve of steering force can refer to shown in Fig. 2, the pressure that Fp ＇ order of representation valve 3 ＇ shown in Fig. 2 opens), reduce working efficiency, but also make operator easily produce fatigue, thus accurately can not judge whether locking device reaches locking stop, cause operator may locking device do not reach locking stop time just shut-down operation, if now electric machine rotation, locking device and rotating shaft collide, improve the risk that wind-driven generator damages.
Summary of the invention
The embodiment provides a kind of wind-driven generator locking hydraulic system, not only can increase work efficiency, but also the risk of the damage of wind-driven generator can be reduced.
For achieving the above object, embodiments of the invention adopt following technological scheme:
A kind of wind-driven generator locking hydraulic system, comprise hand pump, described manual delivery side of pump is connected in parallel to locked rotor oil circuit and rotor brake oil circuit, is in series with sequence valve in described locked rotor oil circuit, and the end of described locked rotor oil circuit is communicated with locking device; The end of described rotor brake oil circuit connects the control port of described sequence valve.
Alternatively, the locked rotor oil circuit between described hand pump and described sequence valve is in series with one-way valve.
Alternatively, the locked rotor oil circuit between described hand pump and described sequence valve is in series with switch valve.
Alternatively, the locked rotor oil circuit between described hand pump and described sequence valve is in series with selector valve.
Further, be connected with stop valve between the end of described rotor brake oil circuit and the import of described sequence valve, when described hand pump is described locking device fuel feeding, described stop valve is in cut-off state.
Alternatively, described stop valve is hand stop valve.
Alternatively, described stop valve is electromagnetism cut-off selector valve, and described electromagnetism cut-off selector valve is in closed condition when not powering on.
Alternatively, described stop valve is unidirectional stop valve, and the cracking pressure of described unidirectional stop valve setting is greater than the cracking pressure of described sequence valve setting.
Further, the locked rotor oil circuit between the outlet of described sequence valve and described locking device is in series with three position four-way directional control valve.
A kind of wind-driven generator locking hydraulic system that the embodiment of the present invention provides, comprise hand pump, described manual delivery side of pump is connected in parallel to locked rotor oil circuit and rotor brake oil circuit, be in series with sequence valve in described locked rotor oil circuit, and the end of described locked rotor oil circuit is communicated with locking device; The end of described rotor brake oil circuit connects the control port of described sequence valve, makes the opening ways of sequence valve be external control like this.When operator's manually-operable hand pump, from the control end of the fluid entering order valve that rotor brake oil circuit end flows out, after the pressure of this fluid is greater than the cracking pressure of the setting of sequence valve, sequence valve keeps opening state always, now hand pump is only locked rotor oil circuit fuel feeding, the hydraulic coupling that hand pump exports only need overcome the resistance in locking device, and the pressure flowing into the fluid of locked rotor oil circuit is less than the cracking pressure of sequence valve setting, operator can be made to work at lower pressures, it is time saving and energy saving so not only to operate, improve working efficiency, and when locking device runs to locking stop, the pressure of locked rotor oil circuit rises rapidly, operator one sensation that obvious pressure raises can be given, and then more adequately can judge whether locking device reaches locking stop, reduce the risk that wind-driven generator damages.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of the wind-driven generator locking hydraulic system that Fig. 1 provides for prior art;
The plotted curve (F represents the size of power, and T represents the time) of hand pump steering force in the wind-driven generator locking hydraulic system that Fig. 2 provides for prior art;
The schematic diagram (stop valve is hand stop valve) of the wind-driven generator locking hydraulic system that Fig. 3 provides for the embodiment of the present invention one;
The schematic diagram (stop valve is electromagnetism cut-off selector valve) of the wind-driven generator locking hydraulic system that Fig. 4 provides for the embodiment of the present invention two;
The plotted curve (F represents the size of power, and T represents the time) of hand pump steering force in the wind-driven generator locking hydraulic system that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
With reference to Fig. 3, embodiments provide a kind of wind-driven generator locking hydraulic system, comprise hand pump 1, the outlet of described hand pump 1 is connected in parallel to locked rotor oil circuit 20 and rotor brake oil circuit 21, be in series with sequence valve 3 in described locked rotor oil circuit 20, and the end of described locked rotor oil circuit 20 is communicated with locking device 6; The end of described rotor brake oil circuit 21 connects the control port of described sequence valve 3, makes the opening ways of sequence valve 3 be external control.
When operator's manually-operable hand pump 1, from the control end of the fluid entering order valve 3 that rotor brake oil circuit 21 end flows out, after the pressure of this fluid is greater than the cracking pressure of the setting of sequence valve 3, sequence valve 3 keeps opening state always, now hand pump 1 is locked rotor oil circuit 20 fuel feeding, the hydraulic coupling that hand pump 1 exports only need overcome the resistance in locking device 6, and the oil liquid pressure flowing into locked rotor oil circuit 20 is less than the cracking pressure that sequence valve 3 sets, operator can be made to work at lower pressures, it is time saving and energy saving so not only to operate, improve working efficiency, and when locking device 6 runs to locking stop, the pressure of locked rotor oil circuit 20 rises rapidly, operator one sensation that obvious pressure raises can be given, and then more adequately can judge whether locking device 6 reaches locking stop, reduce the risk that wind-driven generator damages.
The wind-driven generator locking hydraulic system that the embodiment of the present invention provides is illustrated below in conjunction with Fig. 3 and Fig. 4, this wind-driven generator locking hydraulic system comprises hand pump 1, locked rotor oil circuit 20 and rotor brake oil circuit 21, the head end of locked rotor oil circuit 20 is communicated with the outlet end of hand pump 1, end is communicated with rotor locking device 6, is in series with the first one-way valve 2, sequence valve 3, first throttle valve 4 and the first selector valve 5 in locked rotor oil circuit 20 successively; The head end of rotor brake oil circuit 21 is communicated with the outlet end of hand pump 1, end is communicated with rotor brake 12, the second one-way valve 7, reduction valve 8, the 3rd one-way valve 9, second throttle 10 and the second selector valve 11 is in series with successively in rotor brake oil circuit 21, the control port of the end order of connection valve 3 of rotor brake oil circuit 21, forms external control sequence valve 3 to make sequence valve 3.Compared with prior art can find out, hand pump 1 outlet port in the embodiment of the present invention is communicated with locked rotor oil circuit 20, after the pressure of fluid is greater than the cracking pressure of the setting of sequence valve 3, sequence valve 3 keeps opening state always, now hand pump 1 can be only locked rotor oil circuit 20 fuel feeding, and then the hydraulic coupling making hand pump 1 export only need overcome the resistance in locking device 6, and this hydraulic coupling is less than the cracking pressure that sequence valve 3 sets, thus operator can be made to work at lower pressures.
First one-way valve 2 and the second one-way valve 7 oil liquid pressure of anti-locking system can raise suddenly and damage pump, and play non-return effect, reduction valve 8 ensures that the working pressure of rotor brake 12 and rotor locking device 6 is not higher than setting value.
Above-mentioned first selector valve 5 can be three-position four-way valve or three position five-way valve etc., second to change valve can be two position three-way valve or two-position four-way valve, the first selector valve 5 shown in Fig. 3 or Fig. 4 for two position three-way valve is only a kind of optionally scheme, and is not limited to this for three-position four-way valve and the second selector valve 11.
As the optional scheme of one, first one-way valve 2 can adopt switch valve or selector valve to substitute, adopt switch valve, such as substitute the first one-way valve 2 by switch valve, now be in series with switch valve successively in locked rotor oil circuit 20, sequence valve 3, throttle valve and the first selector valve 5, wherein first manual off switch valve, when oil liquid pressure like this in rotor brake oil circuit 21 does not reach the cracking pressure of sequence valve 3, switch valve is in closed condition, when the oil liquid pressure of rotor brake oil circuit 21 reaches the cracking pressure of sequence valve 3, manual unlocking switch valve, the fluid of hand pump 1 can flow to locking device 6 by locked rotor oil circuit 20, realize locking or the unblock of rotor.When substituting the first one-way valve 2 by selector valve, manually adjustable change valve equally also can realize above-mentioned functions, and after selector valve is opened, selector valve also can be the same with one-way valve, the pressure playing anti-locking system raises suddenly and damages oil pump, namely plays non-return effect.
For rotor brake oil circuit 21, its end can also and the import of sequence valve 3 between be connected with stop valve 13, when stop valve 13 is in cut-off state and sequence valve 3 keeps opening state always, hand pump 1 can be only locked rotor oil circuit 20 fuel feeding, when stop valve 13 is in opening state, then recover electric model.
Electric model and wind-driven generator be normal mode of operation after accessing electric power system, as shown in Figure 3, the hydraulic system of electric model comprises electric-motor pump group 14, working connection 22, the head end of working connection 22 is connected with the outlet of electric-motor pump group 14, end is connected with the import of reduction valve 8, in working connection 22, be in series with filter 15, the 4th one-way valve 16, collateral branch's oil circuit of working connection 22 is also connected with pressure gauge 19, pressure relay 18 and accumulator 17.
Working state under electric model is: electric-motor pump group 14 works and hydraulic oil inputted working connection 22 and accumulator 17.When the oil liquid pressure of working connection 22 reaches the shutdown pressure of setting, pressure relay 18 sends signal, and electric-motor pump group 14 quits work.When the oil liquid pressure of working connection 22 and accumulator 17 reaches the start pressure of setting, pressure relay 18 sends signal, electric-motor pump group 14 entry into service, until oil liquid pressure reaches the shutdown pressure of setting.When needs brake rotors, the second selector valve 11 is energized, and hydraulic oil enters rotor brake 12 by reduction valve 8, the 3rd one-way valve 9, second throttle 10 and the second selector valve 11, realizes rotor brake.When needs lock operation, first selector valve 5 and the second selector valve 11 are energized simultaneously, stop valve 13 is in opening state, now rotor brake 12 reaches braking state, oil liquid pressure continues to raise until when reaching the cracking pressure of the setting of sequence valve 3, sequence valve 3 is communicated with locked rotor oil circuit 20, and hydraulic oil enters rotor locking device 6 through first throttle valve 4, first selector valve 5, realizes locking or the unblock of rotor.
As can be seen from the above, when hand pump 1 for stop valve 13 during locking device 6 fuel feeding is in cut-off state, rotor brake oil circuit 21 and locked rotor oil circuit 20 can be separated like this, because the oil liquid pressure in now rotor brake oil circuit 21 is higher, therefore rotor brake oil circuit 21 be in high pressure conditions, and make sequence valve 3 be in opening state, and accumulator 17 can ensure that the pressure of high-pressure oil passage is constant.
Above-mentioned stop valve 13 can be hand stop valve, be in the working state of manual mode at wind-driven generator under, manual-lock stop valve 13, stop valve 13 is made to be in closed condition, after locked rotor has in a manual mode operated, manual unlocking stop valve 13, makes stop valve 13 be in opening state, recovers electric operation mode.
Certain stop valve 13 can also be electromagnetism cut-off selector valve, this electromagnetism cut-off selector valve was cut-off state before not powering on, namely under manual mode, this electromagnetism cut-off selector valve is in cut-off state, under wind-driven generator is in the working state of electric model, the energising of electromagnetism cut-off selector valve is in opening state.Electromagnetism cut-off selector valve shown in figure is that bi-bit bi-pass selector valve is also only exemplary explanation, and the present invention does not limit to therewith.
Above-mentioned stop valve 13 can also be unidirectional stop valve, the cracking pressure of this unidirectional stop valve is greater than the cracking pressure of the setting of sequence valve 3, in a manual mode, due to the oil pressure of locked rotor oil circuit 20 reach the cracking pressure that sequence valve 3 sets after can remain unchanged under the effect of accumulator 17, when the cracking pressure of unidirectional stop valve is greater than the cracking pressure of the setting of sequence valve 3, unidirectional stop valve is in closed condition, under electric model, the oil pressure of locked rotor oil circuit 20 also can continue to raise after reaching the cracking pressure that sequence valve 3 sets, after the cracking pressure reaching unidirectional stop valve, unidirectional stop valve is opened.
In sum, the manual mode operation process that the wind-driven generator that the embodiment of the present invention provides locks hydraulic system is:
First stop valve 13 is placed in closed condition, manual unlocking second selector valve 11, then the handle of hand pump 1 is shaken, hydraulic oil is inputted working connection 22 and accumulator 17, hydraulic oil enters rotor brake 12 by reduction valve 8, the 3rd one-way valve 9, second throttle 10 and the second selector valve 11 simultaneously, realizes the braking of rotor.Check pressure gauge 19, shown in composition graphs 5, when after the cracking pressure (Fp namely shown in Fig. 5) that force value sets higher than sequence valve 3, sequence valve 3 is opened, and stops shake hand pump 1.Now, locked rotor oil circuit 20 and rotor brake oil circuit 21 oil circuit being in high pressure conditions separate by the second one-way valve 7, the 4th one-way valve 16, stop valve 13, and accumulator 17 keeps the pressure of high-pressure oil passage constant, and sequence valve 3 keeps opening state.Now manual unlocking first selector valve 5, makes locked rotor oil circuit 20 be communicated with; Continue the handle of shake hand pump 1 again, the hydraulic coupling that hand pump 1 exports only need overcome the resistance (Fa namely shown in Fig. 5) of piston and piston rod seal component in locking device 6, can realize locking or the unblock of rotor.And the cracking pressure that the hydraulic coupling that hand pump 1 exports can set than sequence valve 3 is little by more than 90%, thus hand pump 1 can under low pressure be worked, it is time saving and energy saving that operator operates, and increases work efficiency; And when locking device 6 runs to locking stop, the pressure of locked rotor oil circuit 20 rises rapidly, operator one sensation that obvious pressure raises can be given, and then more adequately can judge whether locking device 6 reaches locking stop, reduce the risk that wind-driven generator damages.
Above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. a wind-driven generator locking hydraulic system, comprise hand pump, it is characterized in that, described manual delivery side of pump is connected in parallel to locked rotor oil circuit and rotor brake oil circuit, be in series with sequence valve in described locked rotor oil circuit, and the end of described locked rotor oil circuit is communicated with locking device; The end of described rotor brake oil circuit connects the control port of described sequence valve.
2. wind-driven generator locking hydraulic system according to claim 1, is characterized in that, the locked rotor oil circuit between described hand pump and described sequence valve is in series with one-way valve.
3. wind-driven generator locking hydraulic system according to claim 1, is characterized in that, the locked rotor oil circuit between described hand pump and described sequence valve is in series with switch valve.
4. wind-driven generator locking hydraulic system according to claim 1, is characterized in that, the locked rotor oil circuit between described hand pump and described sequence valve is in series with selector valve.
5. wind-driven generator locking hydraulic system according to claim 1, it is characterized in that, be connected with stop valve between the end of described rotor brake oil circuit and the import of described sequence valve, when described hand pump is described locking device fuel feeding, described stop valve is in cut-off state.
6. wind-driven generator locking hydraulic system according to claim 5, it is characterized in that, described stop valve is hand stop valve.
7. wind-driven generator locking hydraulic system according to claim 5, is characterized in that, described stop valve is electromagnetism cut-off selector valve, and described electromagnetism cut-off selector valve is in closed condition when not powering on.
8. wind-driven generator locking hydraulic system according to claim 5, it is characterized in that, described stop valve is unidirectional stop valve, and the cracking pressure of described unidirectional stop valve setting is greater than the cracking pressure of described sequence valve setting.
9. the wind-driven generator locking hydraulic system according to any one of claim 1-8, is characterized in that, the locked rotor oil circuit between the outlet of described sequence valve and described locking device is in series with three position four-way directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310596566.0A CN103629278B (en) | 2013-11-21 | 2013-11-21 | Locking hydraulic system of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310596566.0A CN103629278B (en) | 2013-11-21 | 2013-11-21 | Locking hydraulic system of wind driven generator |
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| Publication Number | Publication Date |
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| CN103629278A CN103629278A (en) | 2014-03-12 |
| CN103629278B true CN103629278B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310596566.0A Active CN103629278B (en) | 2013-11-21 | 2013-11-21 | Locking hydraulic system of wind driven generator |
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| CN (1) | CN103629278B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545846B (en) * | 2016-02-22 | 2017-04-12 | 北京金风科创风电设备有限公司 | Three-pin locking hydraulic system for draught fan impeller |
| DE102017102375B3 (en) * | 2017-02-07 | 2018-06-28 | Hoerbiger Automatisierungstechnik Holding Gmbh | Wind turbine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201347838Y (en) * | 2009-01-08 | 2009-11-18 | 新华威尔液压系统(上海)有限公司 | Hydraulic system for wind generating set |
| CN102032121B (en) * | 2009-09-25 | 2012-12-26 | 上海汇益控制系统股份有限公司 | Hydraulic braking system for megawatt fan |
| CN201546897U (en) * | 2009-11-24 | 2010-08-11 | 新华威尔液压系统(上海)有限公司 | Hydraulic brake control system for wind driven generator group |
| CN102146893B (en) * | 2011-02-23 | 2012-11-14 | 北车风电有限公司 | Method for locking spindle lock of wind power generator set |
| US8536722B1 (en) * | 2012-02-29 | 2013-09-17 | Mitsubishi Heavy Industries, Ltd. | Wind-turbine-generator control system, wind turbine generator, wind farm, and wind-turbine-generator control method |
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- 2013-11-21 CN CN201310596566.0A patent/CN103629278B/en active Active
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