CN103670922A - Yaw brake hydraulic system of wind driven generator - Google Patents
Yaw brake hydraulic system of wind driven generator Download PDFInfo
- Publication number
- CN103670922A CN103670922A CN201310711968.0A CN201310711968A CN103670922A CN 103670922 A CN103670922 A CN 103670922A CN 201310711968 A CN201310711968 A CN 201310711968A CN 103670922 A CN103670922 A CN 103670922A
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- oil
- hydraulic
- hydraulic system
- valve
- selector valve
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- 238000010248 power generation Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 abstract description 30
- 239000010720 hydraulic oil Substances 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 238000000034 method 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
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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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- Fluid-Pressure Circuits (AREA)
Abstract
偏航刹车装置的液压系统在制动时，往往由于液压系统管路内的液压油压力过高造成液压系统故障，或者液压油通至刹车油缸内的液压油速率不均而造成刹车力度过大或不足的现象。本发明所要解决的问题是提供一种用于风力发电液压系统偏航，使液压控制系统在减少工作能耗、提高工作效率的情况下，实现液压控制系统偏航刹车的正常、平稳，从而克服现有技术中的液压系统故障发生或刹车力度不均的缺陷。本发明包括油泵(2)、和油泵管路连接的蓄能器(7)，同时管路上串联有油缸组(1)，同时管路上还有第一换向阀(6)、第二换向阀(5)、第三换向阀(4)，第一溢流阀(9)、第二溢流阀(8)，油缸(1)组由七个油缸串联组成。
When the hydraulic system of the yaw brake device brakes, the hydraulic system failure is often caused by the hydraulic oil pressure in the hydraulic system pipeline, or the hydraulic oil rate of the hydraulic oil to the brake cylinder is uneven, resulting in excessive braking force. or deficiencies. The problem to be solved by the present invention is to provide a hydraulic system yaw for wind power generation, so that the hydraulic control system can achieve normal and stable yaw braking of the hydraulic control system while reducing energy consumption and improving work efficiency, thereby overcoming In the prior art, the failure of the hydraulic system or the unevenness of the braking force are the defects. The invention comprises an oil pump (2) and an accumulator (7) connected to the pipeline of the oil pump. At the same time, an oil cylinder group (1) is connected in series on the pipeline, and a first reversing valve (6), a second reversing valve Valve (5), the third reversing valve (4), the first overflow valve (9), the second overflow valve (8), and the oil cylinder (1) group is made up of seven oil cylinders connected in series.
Description
Technical field
The invention belongs to technical field of wind power generation, especially relate to a kind of wind power generation hydraulic system main shaft brake and driftage braking device.
Background technique
Wind-power electricity generation is by wind-power generating system, energy to be changed, and intercepts and captures the kinetic energy that moving air has, and by wind machine oar leaf windward the portion of air kinetic energy in swept area be converted to useful mechanical energy, then mechanical energy is converted into electric energy.When the energy saturation of wind energy conversion system storage battery or wind energy conversion system need repairing, just need to make blade stop stopping 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 brake and lock.
The hydraulic brake system of wind-driven generator mainly comprises braking device for main-shaft and driftage braking device.
The hydraulic system of driftage braking device is when braking, and often due to the too high hydraulic system fault that causes of the hydraulic fluid pressure in hydraulic system pipeline, or hydraulic oil passes to the hydraulic oil speed inequality in brake oil cylinder and causes the phenomenon that braking strength is excessive or not enough.
Summary of the invention
Problem to be solved by this invention is to provide a kind ofly goes off course for wind power generation hydraulic system, make hydraulic control system in the situation that reducing work energy consumption, increasing work efficiency, realize the normal, steady of hydraulic control system driftage brake, thereby overcome, hydraulic system fault of the prior art occurs or the defect of 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 the accumulator (7) that oil pump (2) is connected with oil pump pipeline, on pipeline, be in series with oil cylinder group (1) simultaneously, on pipeline, also have the first selector valve (6), the second selector valve (5), the 3rd selector valve (4) simultaneously, the first relief valve (9), the second relief valve (8), oil cylinder (1) group is composed in series by seven oil cylinders.
Between oil cylinder group of the present invention (1) and the first selector valve (6), be provided with throttle valve (13) and pressure transducer (12), accumulator (7).
On oil cylinder group oil circuit of the present invention, there are the second selector valve (5), the 3rd selector valve (4), on the second selector valve (5) loop, have the second relief valve (8) simultaneously.
Accompanying drawing explanation:
Fig. 1 hydraulic scheme of the present invention
01-oil cylinder group 02-oil hydraulic pump 03-first filter 04-the 3rd selector valve 05-second selector valve 06-first selector valve 07-accumulator 08-second relief valve 09-first relief valve 10-the second filter 11-one-way valve 12-pressure transducer 13-throttle valve 14-throttle valve 15-one-way valve
Embodiment:
Below in conjunction with specific embodiment, the invention will be further described:
The oil cylinder that oil cylinder group (1) is connected by six seriess pipe forms;
Throttle valve (13) guarantees that the flowing velocity of the hydraulic oil in hydraulic pipe line is balanced, and this makes oil cylinder group (1) is being that action is mild piston rod is released, thus while guaranteeing hydraulic system driftage brake steadily.
In hydraulic pipe line, there is pressure transducer (12),
Wherein, driftage brake units comprises the compositions such as oil hydraulic pump (2), oil purifier (3), one-way valve (15), throttle valve (14), two two same solenoid directional control valves (6), accumulator (7), oil cylinder group (1), wherein accumulator (7) is front a press feedback device, is connected with working connection.
When needs driftage brake, the first selector valve (6), the second selector valve (5) are switched on simultaneously, fluid passes through after oil hydraulic pump (2), filter (3), one-way valve (15), throttle valve (14), by the energising of the first selector valve (6) left side, fluid flows into oil cylinder group by the first selector valve (6), in backflow oil circuit, connection fluid in the second selector valve (5) left side passes through selector valve simultaneously, brake pressure is set up by the second relief valve (8), when brake pressure reaches set pressure, the second relief valve (8) is opened, and fluid flow back in fuel tank through one-way valve (11).
When driftage brake finishes, the first selector valve (6), the second selector valve (5) power-off, oil hydraulic pump (2) oil liquid pressure constantly increases, hydraulic oil stays oil sump tank by the 3rd relief valve, the 3rd selector valve (4) energising in the loop of oil cylinder group simultaneously, fluid flows back in fuel tank by the 3rd selector valve (4), one-way valve (11), filter (10); Or first selector valve (6), the 3rd selector valve power-off (4), fluid is by the first selector valve (6), and fluid flow to the first relief valve (9), one-way valve (11), oil purifier (10) and flows back to fuel tank.
Claims (3)
1. a yaw brake device of wind power generation hydraulic system, it is characterized in that: comprise the accumulator that oil pump is connected with oil pump pipeline, on pipeline, be in series with oil cylinder group simultaneously, on pipeline, also have the first selector valve, the second selector valve, the 3rd selector valve simultaneously, the first relief valve, the second relief valve, oil cylinder group is composed in series by seven oil cylinders.
2. a kind of yaw brake device of wind power generation hydraulic system according to claim 1, is characterized in that: on oil cylinder group oil circuit of the present invention, have the second selector valve, the 3rd selector valve, have the second relief valve on the second selector valve loop simultaneously.
3. a kind of yaw brake device of wind power generation hydraulic system according to claim 1, is characterized in that: before oil cylinder group, be parallel with accumulator and pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711968.0A CN103670922A (en) | 2013-12-18 | 2013-12-18 | Yaw brake hydraulic system of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711968.0A CN103670922A (en) | 2013-12-18 | 2013-12-18 | Yaw brake hydraulic system of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670922A true CN103670922A (en) | 2014-03-26 |
Family
ID=50309483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310711968.0A Pending CN103670922A (en) | 2013-12-18 | 2013-12-18 | Yaw brake hydraulic system of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670922A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090084A (en) * | 2016-06-27 | 2016-11-09 | 国电联合动力技术有限公司 | A wind power generating set, its yaw hydraulic brake system and performance improvement method |
| CN109027063A (en) * | 2018-07-03 | 2018-12-18 | 明阳智慧能源集团股份公司 | The pressure changeable yaw brake hydraulic system and its control method of wind power generating set |
| CN111288029A (en) * | 2020-01-22 | 2020-06-16 | 武汉船用机械有限责任公司 | Brake hydraulic control system |
| CN112343953A (en) * | 2019-08-09 | 2021-02-09 | 沈阳鑫聚成风电工程机械有限公司 | Hydraulic damper drifts |
-
2013
- 2013-12-18 CN CN201310711968.0A patent/CN103670922A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090084A (en) * | 2016-06-27 | 2016-11-09 | 国电联合动力技术有限公司 | A wind power generating set, its yaw hydraulic brake system and performance improvement method |
| CN106090084B (en) * | 2016-06-27 | 2018-04-13 | 国电联合动力技术有限公司 | Wind generating set, yaw hydraulic braking system thereof and performance improving method |
| CN109027063A (en) * | 2018-07-03 | 2018-12-18 | 明阳智慧能源集团股份公司 | The pressure changeable yaw brake hydraulic system and its control method of wind power generating set |
| CN109027063B (en) * | 2018-07-03 | 2023-07-28 | 明阳智慧能源集团股份公司 | Variable-pressure yaw brake hydraulic system of wind generating set and control method thereof |
| CN112343953A (en) * | 2019-08-09 | 2021-02-09 | 沈阳鑫聚成风电工程机械有限公司 | Hydraulic damper drifts |
| CN111288029A (en) * | 2020-01-22 | 2020-06-16 | 武汉船用机械有限责任公司 | Brake hydraulic control system |
| CN111288029B (en) * | 2020-01-22 | 2022-10-04 | 武汉船用机械有限责任公司 | Brake hydraulic control system |
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Application publication date: 20140326 |