CN103670922A - Yaw brake hydraulic system of wind driven generator - Google Patents
Yaw brake hydraulic system of wind driven generator Download PDFInfo
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- 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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- hydraulic
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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
When a hydraulic system of a yaw brake device brakes, the hydraulic system often breaks down due to too high pressure of hydraulic oil in a hydraulic system pipeline, or brake force is too large or too small due to the uneven rate of hydraulic oil communicated to a brake oil cylinder. The invention aims to provide a yaw brake hydraulic system which can make yaw brake of a hydraulic control system normal and stable under the conditions that working energy consumption of the hydraulic control system is reduced and working efficiency of the hydraulic control system is improved in the yaw process of a hydraulic system of a wind driven generator, and then to overcome the defects that in the prior art, the hydraulic system breaks down or the brake force is uneven. The yaw brake hydraulic system comprises an oil pump (2) and an energy accumulator (7) connected with an oil pump pipeline. An oil cylinder set (1) is connected to the pipeline in series. A first reversing valve (6), a second reversing valve (5), a third reversing valve (4), a first overflow valve (9) and a second overflow valve (8) are arranged on the pipeline. The oil cylinder set (1) is formed by connecting seven oil cylinders 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 kind of wind power generating set, its driftage brake fluid 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 kind of wind power generating set, its driftage brake fluid 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 | A kind of wind power generating set, its yaw brake fluid 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 |
| 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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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |
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| WD01 | Invention patent application deemed withdrawn after publication |