CN201858079U - Yawing brake device of wind power generation hydraulic system - Google Patents
Yawing brake device of wind power generation hydraulic system Download PDFInfo
- Publication number
- CN201858079U CN201858079U CN2010205894544U CN201020589454U CN201858079U CN 201858079 U CN201858079 U CN 201858079U CN 2010205894544 U CN2010205894544 U CN 2010205894544U CN 201020589454 U CN201020589454 U CN 201020589454U CN 201858079 U CN201858079 U CN 201858079U
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- pipeline
- oil cylinder
- cylinder group
- oil
- valve
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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
The utility model discloses a yawing brake device of a wind power generation hydraulic system, which is applied in the technical field wind power generation, and comprises an oil pump and an oil cylinder group connected with the oil pump through a pipeline, wherein the oil cylinder group sequentially passes through a first electromagnetic valve and a first overflow valve and is connected with an external oil tank through the pipeline, the oil cylinder group is in pipeline connection with the external tank through a second electromagnetic valve, an overflow branch circuit which is in pipeline connection with the external oil tank through a second overflow valve is arranged on the pipeline between the oil pump and the oil cylinder group, and the oil cylinder group comprises six oil cylinders connected in series. Due to the adoption of the first electromagnetic valve, the hydraulic system can realize yawing of a wind generator under the situation of having back pressure, thereby reducing working energy consumption and improving working efficiency; simultaneously, due to the adoption of a throttling valve, the pressure of hydraulic oil and the flow rate of the hydraulic oil in a hydraulic pipeline can be controlled, and the normal and smooth operation of a yawing brake of the hydraulic system can be further ensured.
Description
Technical field
The utility model belongs to technical field of wind power generation, relates to a kind of wind generating unit, relates 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.
The model utility content
Technical problem to be solved in the utility model 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 utility model 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 utility model and the overflow branch road is disposed with first filter and first one-way valve.
Pipeline between overflow branch road of the present utility model 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 utility model 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 utility model and the oil cylinder group pipeline.
Adopt the beneficial effect of technique scheme:
First solenoid valve that the utility model adopted 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; The throttle valve that the utility model adopted 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 utility model.
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 utility model is further described:
See also Fig. 1, it is a system schematic of the present utility model, 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.
Oil cylinder group 020 is made up of the oil cylinder 021 that six seriess pipe connect.
Oil pump 010 is connected with oil cylinder group 020 1 end pipelines, and oil cylinder group 020 the other end is connected external fuel tank 050 through first solenoid valve 030 with first relief valve, 031 pipeline successively; While oil cylinder group 020 the other end also connects external fuel tank 050, the second solenoid valve 040 and first solenoid valve 030 and first relief valve 031 through second solenoid valve, 040 pipeline and is arranged in parallel.
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.
First filter 011 and second filter 021 fall the contaminant filter of hydraulic oil in the pipeline, thereby prevent that impurity from precipitating fouling in pipeline.
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 |
|---|---|---|---|
| CN2010205894544U CN201858079U (en) | 2010-11-03 | 2010-11-03 | Yawing brake device of wind power generation hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205894544U CN201858079U (en) | 2010-11-03 | 2010-11-03 | Yawing brake device of wind power generation hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858079U true CN201858079U (en) | 2011-06-08 |
Family
ID=44103887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205894544U Expired - Lifetime CN201858079U (en) | 2010-11-03 | 2010-11-03 | Yawing brake device of wind power generation hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858079U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979869A (en) * | 2010-11-03 | 2011-02-23 | 上海电气液压气动有限公司 | Yaw brake device of wind power generation hydraulic system |
| CN102536648A (en) * | 2011-12-22 | 2012-07-04 | 焦作瑞塞尔盘式制动器有限公司 | Hydraulic control method of wind power yaw system and yaw device for implementing method |
| CN106641041A (en) * | 2016-12-29 | 2017-05-10 | 北京金风科创风电设备有限公司 | yaw brake locking system of wind generating set |
-
2010
- 2010-11-03 CN CN2010205894544U patent/CN201858079U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979869A (en) * | 2010-11-03 | 2011-02-23 | 上海电气液压气动有限公司 | Yaw brake device of wind power generation hydraulic system |
| CN102536648A (en) * | 2011-12-22 | 2012-07-04 | 焦作瑞塞尔盘式制动器有限公司 | Hydraulic control method of wind power yaw system and yaw device for implementing method |
| CN106641041A (en) * | 2016-12-29 | 2017-05-10 | 北京金风科创风电设备有限公司 | yaw brake locking system of wind generating set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |
|
| CX01 | Expiry of patent term |