CN104481940A - Hydraulic yawing brake system of wind driven generator - Google Patents
Hydraulic yawing brake system of wind driven generator Download PDFInfo
- Publication number
- CN104481940A CN104481940A CN201410744982.5A CN201410744982A CN104481940A CN 104481940 A CN104481940 A CN 104481940A CN 201410744982 A CN201410744982 A CN 201410744982A CN 104481940 A CN104481940 A CN 104481940A
- Authority
- CN
- China
- Prior art keywords
- selector valve
- oil
- hydraulic
- oil cylinder
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 9
- 239000002828 fuel tank Substances 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 239000010729 system oil Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/60—Control system actuates through
- F05B2270/604—Control system actuates through hydraulic actuators
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic yawing brake system of a wind driven generator. Under the conditions that energy consumption of operation is reduced and working efficiency is improved, yawing brake of a hydraulic control system is normal and smooth, and accordingly the defect that the hydraulic system in the prior art is faulted or non-uniform in brake force is overcome. The hydraulic yawing brake system comprises an oil pump (2) and an energy accumulator (7) connected with the oil pump through a pipeline, an oil cylinder set (1) is serially connected on the pipeline, and a reversing valve I (6), a reversing valve II (5), a reversing valve III (4), an overflow valve I (9) and an overflow valve II (8) are further arranged on the pipeline and are serially connected with the oil cylinder set (1).
Description
Technical field
The invention belongs to technical field of wind power generation, relate to a kind of yaw brake hydraulic system of wind driven generator.
Background technique
Wind-power electricity generation is changed by energy by wind-power generating system, intercepts and captures the kinetic energy that moving air has, and the portion of air kinetic energy in wind machine oar leaf windward swept area is converted to useful mechanical energy, then be electric energy by changes mechanical energy.When the energy saturation of wind energy conversion system storage battery or wind energy conversion system need repairing, just need blade is stopped operating.Because torque in wind energy conversion system movement process is very large, common brake modes is difficult to the high-speed main spindle of wind energy conversion system to carry out braking and locking.
This yaw brake hydraulic system of wind driven generator mainly comprises braking device for main-shaft and driftage braking device.
The hydraulic system of conventional driftage braking device is when braking, often cause hydraulic system fault because the hydraulic fluid pressure in hydraulic system pipeline is too high, or the phenomenon that hydraulic oil passes to the hydraulic oil speed inequality in brake oil cylinder and causes braking strength excessive or not enough.
Summary of the invention
Problem to be solved by this invention is to provide a kind of for brake hydraulic system of going off course, make hydraulic control system when reducing operating power consumption, increasing work efficiency, realize normal, the smooth working of hydraulic control system driftage brake, thus overcome the defect of hydraulic system fault of the prior art generation or braking strength inequality.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of wind power generation hydraulic driftage brake system, comprise oil pump (2), accumulator (7) that filter I (3) is connected with oil pump pipeline, pipeline is in series with oil cylinder group (1) simultaneously, pipeline also have selector valve I (6), selector valve II (5), selector valve III (4) simultaneously, relief valve I (9), relief valve II (8), oil cylinder (1) is composed in series.
Throttle valve (13), pressure transducer (12) and accumulator (7) is provided with between oil cylinder group (1) of the present invention and selector valve I (6).
Oil cylinder group (1) oil circuit of the present invention there are selector valve II (5), selector valve III (4), on selector valve II (5) loop, have relief valve II (8) simultaneously.
Oil return of the present invention is by relief valve II (8) or relief valve I (9), one-way valve (11) and filter II (10) oil sump tank.
Accompanying drawing illustrates:
Fig. 1 hydraulic scheme of the present invention
01-oil cylinder, 02-oil hydraulic pump, 03-filter, I 04-selector valve, III 05-selector valve, II 06-selector valve, I 07-accumulator, 08-relief valve, II 09-relief valve, I 10-filter, II 11-one-way valve, 12-pressure transducer, 13-throttle valve, 14-throttle valve, 15-one-way valve.
Embodiment
Throttle valve (13) ensures that the flowing velocity of the hydraulic oil in hydraulic pipe line is balanced, and this makes oil cylinder group (1) piston rod projecting motion is mild, thus steady when ensureing hydraulic system driftage brake.
In hydraulic pipe line, there is pressure transducer (12), be used for measuring accumulator (7) pressure, ensure system worked well.
Wherein, driftage brake units comprises the compositions such as oil hydraulic pump (2), oil purifier (3), one-way valve (15), throttle valve (14), bi-bit bi-pass solenoid directional control valve (6), accumulator (7), oil cylinder group (1), wherein accumulator (7) is front pressure transducer (12), is connected with working connection.
When needs driftage brake, selector valve I (6), selector valve II (5) are energized simultaneously, fluid is by after oil hydraulic pump (2), filter (3), one-way valve (15), throttle valve (14), by the energising of selector valve I (6) left side, fluid flows into oil cylinder group (1) by selector valve I (6), in backflow oil circuit, fluid is connected in selector valve II (5) left side simultaneously, brake pressure is set up by relief valve II (8), when brake pressure reaches set pressure, relief valve II (8) is opened, and fluid flow back in fuel tank through one-way valve (11).
At the end of driftage brake, selector valve I (6), selector valve II (5) power-off, oil hydraulic pump (2) oil liquid pressure constantly increases, oil hydraulic pump (2) off-load, in the loop of simultaneously oil cylinder group (1), selector valve III (4) is energized, and fluid flows back to fuel tank by selector valve III (4), one-way valve (11), filter (10); Or selector valve I (6), selector valve III (4) power-off, fluid is by the first selector valve I (6), and fluid flow to relief valve I (9), one-way valve (11), oil purifier (10) flow back to fuel tank.
Claims (3)
1. a power generator driftage brake hydraulic system, it is characterized in that: comprise the accumulator (7) that oil pump (2) is connected with oil pump pipeline, pipeline is in series with oil cylinder group (1) simultaneously, pipeline also have selector valve I (6), selector valve II (5), selector valve III (4) simultaneously, relief valve I (9), relief valve II (8), oil cylinder group (1) forms, ensure that the flowing velocity of the hydraulic oil in hydraulic pipe line is balanced, this makes oil cylinder group (1) piston rod projecting motion is mild, thus steady when ensureing hydraulic system driftage brake.
2. a kind of yaw brake hydraulic system of wind driven generator according to claim 1, it is characterized in that: oil cylinder group (1) oil circuit of the present invention has selector valve II (5), selector valve III (4), on selector valve II (5) loop, has relief valve II (8) simultaneously, at the end of driftage brake, fluid flows back to fuel tank by selector valve III (4), one-way valve (11), filter (10); Hydraulic control system is made to reduce operating power consumption, increase work efficiency.
3. a kind of yaw brake hydraulic system of wind driven generator according to claim 1, is characterized in that: be parallel with accumulator (7) and pressure transducer (12) oil cylinder group (1) is front, ensures that system oil pressure is stablized, normally works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744982.5A CN104481940A (en) | 2014-12-09 | 2014-12-09 | Hydraulic yawing brake system of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744982.5A CN104481940A (en) | 2014-12-09 | 2014-12-09 | Hydraulic yawing brake system of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104481940A true CN104481940A (en) | 2015-04-01 |
Family
ID=52756520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744982.5A Pending CN104481940A (en) | 2014-12-09 | 2014-12-09 | Hydraulic yawing brake system of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104481940A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298744A (en) * | 2015-09-25 | 2016-02-03 | 三一重型能源装备有限公司 | Braking hydraulic system of wind driven generator and wind driven generator |
| CN106121915A (en) * | 2016-08-30 | 2016-11-16 | 新疆金风科技股份有限公司 | Blower fan hydraulic variable propeller system and method |
| CN112128154A (en) * | 2020-10-10 | 2020-12-25 | 鞍钢股份有限公司 | Large-flow two-stage pressure regulating control balancing device and method |
| CN112727859A (en) * | 2021-01-29 | 2021-04-30 | 内蒙古天诚商贸有限责任公司 | Hydraulic station special for wind power and improvement method thereof |
-
2014
- 2014-12-09 CN CN201410744982.5A patent/CN104481940A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298744A (en) * | 2015-09-25 | 2016-02-03 | 三一重型能源装备有限公司 | Braking hydraulic system of wind driven generator and wind driven generator |
| CN105298744B (en) * | 2015-09-25 | 2018-03-27 | 三一重型能源装备有限公司 | A kind of wind-driven generator brake hydraulic system and wind-driven generator |
| CN106121915A (en) * | 2016-08-30 | 2016-11-16 | 新疆金风科技股份有限公司 | Blower fan hydraulic variable propeller system and method |
| CN112128154A (en) * | 2020-10-10 | 2020-12-25 | 鞍钢股份有限公司 | Large-flow two-stage pressure regulating control balancing device and method |
| CN112727859A (en) * | 2021-01-29 | 2021-04-30 | 内蒙古天诚商贸有限责任公司 | Hydraulic station special for wind power and improvement method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |