CN101979869A - Yaw brake device of wind power generation hydraulic system - Google Patents
Yaw brake device of wind power generation hydraulic system Download PDFInfo
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- CN101979869A CN101979869A CN2010105300678A CN201010530067A CN101979869A CN 101979869 A CN101979869 A CN 101979869A CN 2010105300678 A CN2010105300678 A CN 2010105300678A CN 201010530067 A CN201010530067 A CN 201010530067A CN 101979869 A CN101979869 A CN 101979869A
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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 invention discloses a yaw brake device of a wind power generation hydraulic system, which is applied to the technical field of wind power generation. The yaw brake device comprises an oil pump and an oil cylinder set connected with an oil pump pipeline, wherein the oil cylinder set is connected with an outside oil tank pipeline through a first electromagnetic valve and a first overflow valve in turn; oil cylinders are connected with the outside oil tank pipeline through a second electromagnetic valve; overflow branches connected with the outside oil tank pipeline through a second overflow valve are also arranged on the pipeline between the oil pump and the oil cylinder set; and the oil cylinder set consists of six oil cylinders which are connected in series. In the invention, the first electromagnetic valve is adopted, so that the hydraulic system realizes the yaw of a windmill generator under a backpressure condition, so that working energy consumption is reduced and working efficiency is improved; meanwhile, a throttling valve is adopted to control the pressure and flow rate of the hydraulic oil in a hydraulic pipeline, so that the normal and stable yaw brake of the hydraulic system is guaranteed.
Description
Technical field
The invention belongs to technical field of wind power generation, relate to a kind of wind generating unit, relate in particular to a kind of wind power generation hydraulic system driftage braking device.
Background technique
The hydraulic brake system of wind-driven generator mainly comprises main shaft braking device and driftage braking device.
The hydraulic system of driftage skidding is when braking, often owing to the too high hydraulic system fault that causes of hydraulic fluid pressure in the hydraulic system pipeline, perhaps hydraulic oil passes to the hydraulic oil speed inequality in the main shaft brake oil cylinder and causes the excessive or not enough phenomenon of braking strength.
A kind of wind power generation hydraulic system driftage braking device need be provided, make hydraulic control system under the situation that reduces the work energy consumption, increases work efficiency, hydraulic fluid pressure and flow rate in the pipeline are controlled, thereby guarantee that the driftage braking device normally, work reposefully.
Summary of the invention
Technical problem to be solved by this invention provides a kind of wind power generation hydraulic system driftage braking device, make hydraulic control system under the situation that reduces the work energy consumption, increases work efficiency, realize the normal, steady of hydraulic control system driftage brake, hydraulic system fault of the prior art takes place or the defective of braking strength inequality thereby overcome.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of wind power generation hydraulic system driftage braking device, comprise oil pump, the oil cylinder group that is connected with the oil pump pipeline, the oil cylinder group is connected with the external fuel tank pipeline with first relief valve through first solenoid valve successively, oil cylinder also is connected with the external fuel tank pipeline through second solenoid valve, also be provided with the overflow branch road that is connected with the external fuel tank pipeline through second relief valve on the pipeline between oil pump and the oil cylinder group, the oil cylinder group is made up of the oil cylinder of six series connection.
Pipeline between oil pump of the present invention and the overflow branch road is disposed with first filter and first one-way valve.
Pipeline between overflow branch road of the present invention and the oil cylinder group is disposed with adjustable restrictive valve, second one-way valve and throttle valve.
Be provided with second filter between the oil cylinder group of the present invention and the first solenoid valve pipeline.
Also be provided with the branch road that is connected pressure measuring tie-in between throttle valve of the present invention and the oil cylinder group pipeline.
Adopt the beneficial effect of technique scheme:
First solenoid valve of the present invention makes hydraulic system have under the situation of back pressure the driftage that realizes wind-driven generator, thereby reduces the work energy consumption, increase work efficiency; Throttle valve of the present invention makes the flowing velocity equilibrium of the hydraulic oil in the pipeline, and oil cylinder moves when piston rod is released gently, thus guarantee hydraulic system driftage brake steadily.
Description of drawings
Fig. 1 is a system schematic of the present invention.
Wherein:
010-oil pump, 011-the first filter, 012-the first one-way valve, 013-adjustable restrictive valve, 014-the second one-way valve, 015-throttle valve, 016-pressure measuring tie-in, 020-oil cylinder group, 021-oil cylinder, 022-the second filter, 030-the first solenoid valve, 031-the first relief valve, 040-the second solenoid valve, 050-external fuel tank, 060-the second relief valve.
Embodiment
Below in conjunction with specific embodiment the present invention is further described:
See also Fig. 1, it is a system schematic of the present invention, comprises oil pump 010, oil cylinder group 020, first solenoid valve 030, second solenoid valve 040, external fuel tank 050 and second relief valve 060.
Also be provided with the overflow branch road that is connected with external fuel tank 050 pipeline through second relief valve 060 on the pipeline between oil pump 010 and the oil cylinder group 020.
The hydraulic fluid pressure value of second relief valve 060 in pipeline in the overflow branch road unloaded hydraulic oil to external fuel tank 050, to prevent that hydraulic system is because of the excessive generation operation troubles of loine pressure above automatic conducting in the setting value.
Pipeline between oil pump 010 and the overflow branch road is disposed with first filter 011 and first one-way valve 012.
Pipeline between overflow branch road and the oil cylinder group 020 is disposed with adjustable restrictive valve 013, second one-way valve 014 and throttle valve 015.
Adjustable restrictive valve 013 and throttle valve 015 guarantees the flowing velocity equilibrium of the hydraulic oil in the hydraulic pipe line, and this makes oil cylinder 021 move when piston rod is released gently, thus steady when guaranteeing that the hydraulic system driftage is braked.
First one-way valve 012 and second one-way valve 014 prevent the backflow of hydraulic oil in the pipeline.
Being provided with second filter, 021, the second solenoid valve 040 between oil cylinder group 020 and first solenoid valve, 030 pipeline is arranged between second filter 021 and first solenoid valve, 030 pipeline with the point in parallel of first solenoid valve 030.
Also be provided with the branch road that is connected pressure measuring tie-in 016 between throttle valve 015 and oil cylinder group 020 pipeline.
Pressure measuring tie-in 016 is measured hydraulic system and whether is in normal working state.
In wind-driven generator normal operation process, first solenoid valve 030 and second solenoid valve, 040 equal dead electricity are in closed condition, the hydraulic oil that is provided by oil pump 010 is successively through first filter 011, first one-way valve 012, adjustable restrictive valve 013, second one-way valve 014, throttle valve 015, enter the rodless cavity of driftage brake oil cylinder 021 through the A2 mouth, and pass through second filter 022 through the hydraulic oil that the B2 mouth flows out from oil cylinder 021, arrive the M point, because first solenoid valve 030 and second solenoid valve 040 all are in closed condition, hydraulic oil can't pass through, oil cylinder 021 piston rod stretches out under the effect of pressure hydraulic oil, makes blower fan driftage gear ring skidding.
When blower fan need be gone off course, when first solenoid valve 030 must electricly be in opening state, fluid in the driftage brake oil cylinder is through second filter 022, first solenoid valve, 030 a right path, first relief valve 031, flow back to external fuel tank 050 through pressure relief opening T1, so oil cylinder 021 piston rod withdrawal, make the brake of driftage gear ring unclamp the blower fan driftage.This moment, so the rodless cavity of driftage brake oil cylinder will remain the back pressure of 55bar, oil cylinder piston bar withdrawal amount was less because the setting pressure of first relief valve 031 is 55bar.
When blower fan need untie the mooring rope, first solenoid valve 030 keeps dead electricity, second solenoid valve 040 must be established by cable and open, fluid in the driftage brake oil cylinder 021 is through second filter 022, second solenoid valve, 040 a right path, T1 flows back to fuel tank through pressure relief opening, owing to do not set back pressure in this oil circuit, so oil cylinder 021 piston rod withdrawal amount is bigger, driftage gear ring brake quantity of margin is bigger, and blower fan unties the mooring rope.
Above-mentioned embodiment is exemplary, be in order better to make those skilled in the art can understand this patent, can not be interpreted as it is the restriction that this patent is comprised scope, so long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (5)
1. wind power generation hydraulic system driftage braking device, it is characterized in that: comprise oil pump, the oil cylinder group that is connected with described oil pump pipeline, described oil cylinder group is connected with the external fuel tank pipeline with first relief valve through first solenoid valve successively, oil cylinder also is connected with the external fuel tank pipeline through second solenoid valve, also be provided with the overflow branch road that is connected with the external fuel tank pipeline through second relief valve on the pipeline between described oil pump and the oil cylinder group, described oil cylinder group is made up of the oil cylinder of six series connection.
2. wind power generation hydraulic according to claim 1 system driftage braking device, it is characterized in that: the pipeline between described oil pump and the overflow branch road is disposed with first filter and first one-way valve.
3. wind power generation hydraulic according to claim 1 system driftage braking device, it is characterized in that: the pipeline between described overflow branch road and the oil cylinder group is disposed with adjustable restrictive valve, second one-way valve and throttle valve.
4. wind power generation hydraulic according to claim 1 system driftage braking device is characterized in that: be provided with second filter between the described oil cylinder group and the first solenoid valve pipeline.
5. wind power generation hydraulic according to claim 3 system driftage braking device is characterized in that: also be provided with the branch road that is connected pressure measuring tie-in between described throttle valve and the oil cylinder group pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105300678A CN101979869A (en) | 2010-11-03 | 2010-11-03 | Yaw brake device of wind power generation hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105300678A CN101979869A (en) | 2010-11-03 | 2010-11-03 | Yaw brake device of wind power generation hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101979869A true CN101979869A (en) | 2011-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105300678A Pending CN101979869A (en) | 2010-11-03 | 2010-11-03 | Yaw brake device of wind power generation hydraulic system |
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| CN (1) | CN101979869A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265703A (en) * | 2014-10-11 | 2015-01-07 | 安徽合力股份有限公司 | Energy saving secondary pressure regulating loop circuit of hydraulic system |
| CN109386511A (en) * | 2018-12-24 | 2019-02-26 | 上海电气液压气动有限公司 | A kind of hydraulic control system in wind power equipment |
| CN113027676A (en) * | 2019-12-25 | 2021-06-25 | 新疆金风科技股份有限公司 | Hydraulic variable pitch control method and device of wind generating set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004057522A1 (en) * | 2004-10-08 | 2006-04-13 | Bosch Rexroth Aktiengesellschaft | Braking device for wind power plant has 3/2-path seat valve, via which pressure cavity can be connected to pressure fluid source and tank vent to operate brakes |
| JP2008232155A (en) * | 2007-03-16 | 2008-10-02 | Toyooki Kogyo Co Ltd | Hydraulic device |
| 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 |
| CN201858079U (en) * | 2010-11-03 | 2011-06-08 | 上海电气液压气动有限公司 | Yawing brake device of wind power generation hydraulic system |
-
2010
- 2010-11-03 CN CN2010105300678A patent/CN101979869A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004057522A1 (en) * | 2004-10-08 | 2006-04-13 | Bosch Rexroth Aktiengesellschaft | Braking device for wind power plant has 3/2-path seat valve, via which pressure cavity can be connected to pressure fluid source and tank vent to operate brakes |
| JP2008232155A (en) * | 2007-03-16 | 2008-10-02 | Toyooki Kogyo Co Ltd | Hydraulic device |
| 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 |
| CN201858079U (en) * | 2010-11-03 | 2011-06-08 | 上海电气液压气动有限公司 | Yawing brake device of wind power generation hydraulic system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265703A (en) * | 2014-10-11 | 2015-01-07 | 安徽合力股份有限公司 | Energy saving secondary pressure regulating loop circuit of hydraulic system |
| CN104265703B (en) * | 2014-10-11 | 2016-08-03 | 安徽合力股份有限公司 | A kind of energy-conservation second voltage regulation loop of hydraulic system |
| CN109386511A (en) * | 2018-12-24 | 2019-02-26 | 上海电气液压气动有限公司 | A kind of hydraulic control system in wind power equipment |
| CN113027676A (en) * | 2019-12-25 | 2021-06-25 | 新疆金风科技股份有限公司 | Hydraulic variable pitch control method and device of wind generating set |
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Open date: 20110223 |