CN104481940A - Hydraulic yawing brake system of wind driven generator - Google Patents

Hydraulic yawing brake system of wind driven generator Download PDF

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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
hydraulic
oil
selector valve
valve
oil cylinder
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
Application number
CN201410744982.5A
Other languages
Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN JINNUODING HYDRAULIC TECHNOLOGY Co Ltd
Original Assignee
TIANJIN JINNUODING HYDRAULIC TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TIANJIN JINNUODING HYDRAULIC TECHNOLOGY Co Ltd filed Critical TIANJIN JINNUODING HYDRAULIC TECHNOLOGY Co Ltd
Priority to CN201410744982.5A priority Critical patent/CN104481940A/en
Publication of CN104481940A publication Critical patent/CN104481940A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0204Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0244Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/60Control system actuates through
    • F05B2270/604Control system actuates through hydraulic actuators
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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

A kind of yaw brake hydraulic system of wind driven generator
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.
CN201410744982.5A 2014-12-09 2014-12-09 Hydraulic yawing brake system of wind driven generator Pending CN104481940A (en)

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 (2)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

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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