CN103629278A - Locking hydraulic system of wind driven generator - Google Patents
Locking hydraulic system of wind driven generator Download PDFInfo
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- CN103629278A CN103629278A CN201310596566.0A CN201310596566A CN103629278A CN 103629278 A CN103629278 A CN 103629278A CN 201310596566 A CN201310596566 A CN 201310596566A CN 103629278 A CN103629278 A CN 103629278A
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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 50
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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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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, relate in particular to a kind of wind-driven generator locking hydraulic system.
Background technique
Wind-driven generator is a kind of equipment that is electric energy by wind energy transformation, mainly blade, generator, mechanical part and electric component etc., consists of.After workmen has assembled wind-driven generator or in transportation wind-driven generator, conventionally need to it can not be rotated by locking device by the locked rotor of generator, to guarantee the safety of equipment.At present, this locking device drives by hydraulic system, after wind-driven generator lifting, removes the locking of rotor by locking device, and it can be rotated freely.Conventionally after wind-driven generator lifting and in the time of working, 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, so this hydraulic system need to rely on hydraulic hand-pump to carry out manual drives locking device.
As shown in Figure 1, when wind-driven generator does not connect electricity or without in electric situation, when needs carry out rotor braking, lock operation, manually-operable selector valve 11 ＇, manually shake the handle of hand pump 1 ＇, hydraulic oil is inputted to working connection and accumulator 17 ＇, and simultaneously hydraulic oil enters rotor brake 12 ＇ after by reduction valve 8 ＇, one-way valve 9 ＇, throttle valve 10 ＇ and selector valve 11 ＇, realizes the braking of rotor.When making rotor brake 12 ＇, hydraulic oil reaches after braking state, manually-operable selector valve 5 ＇, when the pressure of hydraulic oil reaches the setting pressure of sequence valve 3 ＇, sequence valve 3 ＇ are 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 release of rotor.In this manually-operable process, in order to guarantee that sequence valve 3 ＇ remain 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 be with reference to shown in Fig. 2, the pressure that Fp ＇ order of representation valve 3 ＇ shown in Fig. 2 open), reduced working efficiency, but also make operator easily produce fatigue, thereby can not accurately judge whether locking device reaches locking stop, cause operator not reach locking just shut-down operation during stop at locking device, if electric machine rotation now, locking device and rotating shaft bump, improve the risk that wind-driven generator damages.
Summary of the invention
Embodiments of the invention provide a kind of wind-driven generator locking hydraulic system, not only can increase work efficiency, but also can reduce the risk of the damage of wind-driven generator.
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 circuit, be in series with sequence valve, and the end of described locked rotor oil circuit is communicated with locking device in described locked rotor oil circuit; The end of described rotor brake circuit connects the control port of described sequence valve.
Alternatively, on the locked rotor oil circuit between described hand pump and described sequence valve, be in series with one-way valve.
Alternatively, on the locked rotor oil circuit between described hand pump and described sequence valve, be in series with switch valve.
Alternatively, on the locked rotor oil circuit between described hand pump and described sequence valve, be in series with selector valve.
Further, between the end of described rotor brake circuit and the import of described sequence valve, be connected with stop 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, described electromagnetism cut-off selector valve when not powering in closed condition.
Alternatively, described stop valve is unidirectional stop valve, and the cracking pressure that described unidirectional stop valve is set is greater than the cracking pressure that described sequence valve is set.
Further, on the locked rotor oil circuit between the outlet of described sequence valve and described locking device, be 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 circuit, in described locked rotor oil circuit, be in series with sequence valve, and the end of described locked rotor oil circuit is communicated with locking device; The end of described rotor brake circuit connects the control port of described sequence valve, and the opening ways that makes like this sequence valve is external control.When operator's manually-operable hand pump, the control end of the fluid entering order valve flowing out from rotor brake circuit end, when the pressure of this fluid is greater than after the cracking pressure of setting of sequence valve, sequence valve keeps opening state always, now hand pump is only locked rotor oil circuit fuel feeding, the hydraulic coupling of hand pump output only need overcome the resistance in locking device, and the pressure that flows into the fluid of locked rotor oil circuit is less than the cracking pressure that sequence valve is set, can make operator work under lower pressure, it is time saving and energy saving so not only to operate, improved working efficiency, and when locking device runs to locking stop, the pressure of locked rotor oil circuit rises rapidly, can give operator the sensation that an obvious pressure raises, and then can judge comparatively exactly 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, 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 only 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.
The wind-driven generator that Fig. 1 provides for prior art locks the schematic diagram of hydraulic system;
The wind-driven generator that Fig. 2 provides for prior art locks the plotted curve (F represents the size of power, and T represents the time) of hand pump steering force in hydraulic system;
The wind-driven generator that Fig. 3 provides for the embodiment of the present invention one locks the schematic diagram (stop valve is hand stop valve) of hydraulic system;
The wind-driven generator that Fig. 4 provides for the embodiment of the present invention two locks the schematic diagram (stop valve is electromagnetism cut-off selector valve) of hydraulic system;
The wind-driven generator that Fig. 5 provides for the embodiment of the present invention locks the plotted curve (F represents the size of power, and T represents the time) of hand pump steering force in hydraulic system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
With reference to Fig. 3, the embodiment of the present invention provides 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 circuit 21, in described locked rotor oil circuit 20, be in series with sequence valve 3, and the end of described locked rotor oil circuit 20 is communicated with locking device 6; The end of described rotor brake circuit 21 connects the control port of described sequence valve 3, and the opening ways that makes sequence valve 3 is external control.
When operator's manually-operable hand pump 1, the control end of the fluid entering order valve 3 flowing out from rotor brake circuit 21 ends, when the pressure of this fluid is greater than after the cracking pressure of setting of sequence valve 3, sequence valve 3 keeps opening state always, now 1 of hand pump is locked rotor oil circuit 20 fuel feeding, the hydraulic coupling of hand pump 1 output only need overcome the resistance in locking device 6, and the oil liquid pressure that flows into locked rotor oil circuit 20 is less than the cracking pressure that sequence valve 3 is set, can make operator work under lower pressure, it is time saving and energy saving so not only to operate, improved working efficiency, and when locking device 6 runs to locking stop, the pressure of locked rotor oil circuit 20 rises rapidly, can give operator the sensation that an obvious pressure raises, and then can judge comparatively exactly whether locking device 6 reaches locking stop, reduce the risk that wind-driven generator damages.
Below in conjunction with Fig. 3 and Fig. 4, illustrate the wind-driven generator locking hydraulic system that the embodiment of the present invention provides, this wind-driven generator locking hydraulic system comprises hand pump 1, locked rotor oil circuit 20 and rotor brake 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 successively 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; The head end of rotor brake circuit 21 is communicated with the outlet end of hand pump 1, end is communicated with rotor brake 12, in rotor brake circuit 21, be in series with successively the second one-way valve 7, reduction valve 8, the 3rd one-way valve 9, the second throttle valve 10 and the second selector valve 11, the control port of the end order of connection valve 3 of rotor brake circuit 21, so that sequence valve 3 forms external control 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, when the pressure of fluid is greater than after the cracking pressure of 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 make the hydraulic coupling of hand pump 1 output only need overcome the resistance in locking device 6, and this hydraulic coupling is less than the cracking pressure that sequence valve 3 is set, thereby can make operator work under lower pressure.
The first one-way valve 2 and the second one-way valve 7 can anti-locking system oil liquid pressure raise suddenly and damage pump, play non-return effect, the working pressure that reduction valve 8 guarantees rotor brakes 12 and rotor locking device 6 is not higher than setting value.
Above-mentioned the 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 is that three-position four-way valve and the second selector valve 11 are that two position three-way valve is only a kind of optional scheme, and is not limited to this.
As a kind of optional scheme, the first one-way valve 2 can adopt switch valve or selector valve to substitute, adopt switch valve, for example by switch valve, substitute the first one-way valve 2, now in locked rotor oil circuit 20, be in series with successively switch valve, sequence valve 3, throttle valve and the first selector valve 5, first manual off switch valve wherein, when the oil liquid pressure in rotor brake circuit 21 does not reach the cracking pressure of sequence valve 3 like this, switch valve is in closed condition, when the oil liquid pressure of rotor brake 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 release of rotor.When substituting the first one-way valve 2 by selector valve, by manual tune selector valve, equally also can realize above-mentioned functions, after selector valve is opened, selector valve also can be the same with one-way valve, the pressure that plays anti-locking system raises suddenly and damages oil pump, plays non-return effect.
For rotor brake 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 when cut-off state and sequence valve 3 keep opening state always, hand pump 1 can be only locked rotor oil circuit 20 fuel feeding, when stop valve 13 is during in opening state, recover electric model.
Electric model is normal mode of operation after wind-driven generator access 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: 14 work of electric-motor pump group are inputted working connection 22 and accumulator 17 by hydraulic oil.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, and 14 entrys into service of electric-motor pump group, until oil liquid pressure reaches the shutdown pressure of setting.When needs brake rotors, the second selector valve 11 energisings, hydraulic oil enters rotor brake 12 by reduction valve 8, the 3rd one-way valve 9, the second throttle valve 10 and the second selector valve 11, realizes rotor braking.When needs lock operation, the first selector valve 5 and the second selector valve 11 are switched on simultaneously, stop valve 13 is in opening state, now rotor brake 12 reaches braking state, oil liquid pressure continue to raise until while reaching the cracking pressure of 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, the first selector valve 5, realizes locking or the release of rotor.
As can be seen from the above, when hand pump 1 is locking device 6 fuel feeding, stop valve 13 is in cut-off state, rotor brake circuit 21 and locked rotor oil circuit 20 can be separated like this, because the oil liquid pressure in rotor brake circuit 21 is now higher, therefore rotor brake circuit 21 in high pressure conditions, and make sequence valve 3 in opening state, and accumulator 17 can guarantee that the pressure of high-pressure oil passage is constant.
Above-mentioned stop valve 13 can be hand stop valve, under working state at wind-driven generator in manual mode, manual-lock stop valve 13, make stop valve 13 in closed condition, after the locked rotor under manual mode has operated, manual unlocking stop valve 13, makes stop valve 13 in opening state, recovers electric operation mode.
Certainly stop valve 13 can also end selector valve for electromagnetism, this electromagnetism cut-off selector valve was cut-off state before not powering on, be under manual mode, this electromagnetism cut-off selector valve is in cut-off state, under the working state of wind-driven generator in 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 only also 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, under manual mode, because the oil pressure of locked rotor oil circuit 20 can remain unchanged after reaching the cracking pressure that sequence valve 3 sets under the effect of accumulator 17, when the cracking pressure of unidirectional stop valve is greater than the cracking pressure of 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 reaching the cracking pressure of unidirectional stop valve, unidirectional stop valve is opened.
The manual mode working procedure of the wind-driven generator locking hydraulic system that in sum, the embodiment of the present invention provides is:
Above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in 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 locks hydraulic system, it is characterized in that, comprise hand pump, described manual delivery side of pump is connected in parallel to locked rotor oil circuit and rotor brake circuit, in described locked rotor oil circuit, be in series with sequence valve, and the end of described locked rotor oil circuit is communicated with locking device; The end of described rotor brake circuit connects the control port of described sequence valve.
2. wind-driven generator locking hydraulic system according to claim 1, is characterized in that, on 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, on 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, on the locked rotor oil circuit between described hand pump and described sequence valve, is in series with selector valve.
5. wind-driven generator according to claim 1 locks hydraulic system, it is characterized in that, between the end of described rotor brake circuit and the import of described sequence valve, be connected with stop 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, is characterized in that, described stop valve is hand stop valve.
7. wind-driven generator according to claim 5 locking hydraulic system, is characterized in that, described stop valve is electromagnetism cut-off selector valve, described electromagnetism cut-off selector valve when not powering in closed condition.
8. wind-driven generator locking hydraulic system according to claim 5, is characterized in that, described stop valve is unidirectional stop valve, and the cracking pressure that described unidirectional stop valve is set is greater than the cracking pressure that described sequence valve is set.
9. according to the wind-driven generator locking hydraulic system described in claim 1-8 any one, it is characterized in that, on the locked rotor oil circuit between the outlet of described sequence valve and described locking device, be 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 |
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| 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 true CN103629278A (en) | 2014-03-12 |
| CN103629278B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545846A (en) * | 2016-02-22 | 2016-05-04 | 北京金风科创风电设备有限公司 | Three-pin locking hydraulic system for draught fan impeller |
| CN110506160A (en) * | 2017-02-07 | 2019-11-26 | 哈威阿尔滕斯塔特控股有限公司 | Wind power plant |
| CN113915058A (en) * | 2021-04-08 | 2022-01-11 | 上海圣克赛斯液压股份有限公司 | Braking system for wind generating set |
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| 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 |
| 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 |
| CN102032121A (en) * | 2009-09-25 | 2011-04-27 | 上海汇益控制系统股份有限公司 | Hydraulic braking system for megawatt fan |
| CN102146893A (en) * | 2011-02-23 | 2011-08-10 | 北车风电有限公司 | Method for locking spindle lock of wind power generator set |
| US20130221934A1 (en) * | 2012-02-29 | 2013-08-29 | 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
- 2013-11-21 CN CN201310596566.0A patent/CN103629278B/en active Active
Patent Citations (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 |
| CN102032121A (en) * | 2009-09-25 | 2011-04-27 | 上海汇益控制系统股份有限公司 | Hydraulic braking system for megawatt fan |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545846A (en) * | 2016-02-22 | 2016-05-04 | 北京金风科创风电设备有限公司 | Three-pin locking hydraulic system for draught fan impeller |
| 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 |
| CN110506160A (en) * | 2017-02-07 | 2019-11-26 | 哈威阿尔滕斯塔特控股有限公司 | Wind power plant |
| CN113915058A (en) * | 2021-04-08 | 2022-01-11 | 上海圣克赛斯液压股份有限公司 | Braking system for wind generating set |
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| CN103629278B (en) | 2016-03-30 |
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