CN202645846U - Energy-saving type braking hydraulic system for wind generating set - Google Patents
Energy-saving type braking hydraulic system for wind generating set Download PDFInfo
- Publication number
- CN202645846U CN202645846U CN2012201888331U CN201220188833U CN202645846U CN 202645846 U CN202645846 U CN 202645846U CN 2012201888331 U CN2012201888331 U CN 2012201888331U CN 201220188833 U CN201220188833 U CN 201220188833U CN 202645846 U CN202645846 U CN 202645846U
- Authority
- CN
- China
- Prior art keywords
- brake control
- main shaft
- valve
- brake
- solenoid valve
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses an energy-saving type braking hydraulic system for a wind generating set. The energy-saving type braking hydraulic system comprises a main shaft braking oil cylinder set and a yaw braking oil cylinder set, wherein the system further comprises a hydraulic pressure station, and a main shaft braking control system and a yaw braking control system which are connected with the hydraulic pressure station. The hydraulic pressure station comprises an oil tank, a motor pump set, a first pressure filter, a safe overflow valve and a first energy accumulator. The main shaft braking control system comprises a main shaft braking control electromagnetic valve, a directly operated type decompressing overflow valve, a relieving main shaft braking control electromagnetic valve, a second throttle valve and a second energy accumulator. The yaw braking control system comprises a yaw braking control electromagnetic valve, a second pressure filter, a first relieving yaw braking control electromagnetic valve, a second relieving yaw braking control electromagnetic valve, and an overflow valve for setting a braking pre-tightening force. The energy-saving type braking hydraulic system for the wind generating set can normally and stably work in the main shaft braking process and the yaw braking process, so that the working energy consumption is reduced, the working efficiency is improved, and the cost is lowered.
Description
Technical field
The utility model relates to the wind-power electricity generation brake system in a kind of technical field of wind power generation, particularly, relates to the energy-saving brake hydraulic system of a kind of wind power generating set.
Background technique
Present existing wind power generating set brake hydraulic system mainly comprises main shaft brake and driftage brake.
What the main shaft brake hydraulic system adopted when braking in the past is two hole reduction valve, and the whole world is one or two production only, is in absolute monopoly, and cost is high; When the driftage brake hydraulic system was removed the driftage brake, the electric-motor pump group was wanted frequent start-stop, replenishment system pressure, and energy consumption is high.
The model utility content
The purpose of this utility model provides a kind of hydraulic brake system for wind power generating set, and make hydraulic control system when main shaft brake and driftage brake normally, work stably, reduce the work energy consumption, increase work efficiency, reduce cost.
In order to achieve the above object, the utility model provides a kind of wind power generating set energy-saving brake hydraulic system, comprise main shaft brake oil cylinder group and driftage brake oil cylinder group, wherein, this system also comprises hydraulic station and the main shaft brake control system that is connected with described hydraulic station and the brake control system of going off course.
Described hydraulic station comprises fuel tank, electric-motor pump group, the first filter-press, safety overflow valve and the first accumulator; Described electric-motor pump group one end connects described fuel tank, and the other end connects the filler opening of the first filter-press; The oil outlet of described the first filter-press is connected with filler opening and first accumulator of described safety overflow valve respectively.
Described main shaft brake control system comprises main shaft brake control solenoid valve, removes main shaft brake control solenoid valve, direct-acting type decompression relief valve, the second throttle valve and the second accumulator; The two ends of described main shaft brake control solenoid valve are connected with the oil outlet of the first filter-press and the filler opening of direct-acting type decompression relief valve in the described hydraulic station respectively; The flow-off of described direct-acting type decompression relief valve and oil outlet connect respectively the fuel tank of described hydraulic station and the filler opening of described the second throttle valve; The oil outlet of described the second throttle valve connects respectively the filler opening of main shaft brake oil cylinder group and described releasing main shaft brake control solenoid valve; The oil outlet of described releasing main shaft brake control solenoid valve is connected on the fuel tank of described hydraulic station; Described the second accumulator is located between the second throttle valve and the main shaft brake oil cylinder group.
Described driftage brake control system comprises driftage brake control solenoid valve, first and removes relief valve and the second filter-press that driftage brake control solenoid valve, second is removed driftage brake control solenoid valve, is used for setting the brake pretightening force; The two ends of described driftage brake control solenoid valve are connected with the oil outlet of the first filter-press and the filler opening of driftage brake oil cylinder group in the described hydraulic station respectively; The filler opening of described the second filter-press connects the oil outlet of the brake oil cylinder group of going off course, and the oil outlet of this second filter-press removes the filler opening of driftage brake control solenoid valve with described first respectively and the filler opening of the second releasing driftage brake control solenoid valve is connected; The described second oil outlet of removing driftage brake control solenoid valve connects the fuel tank of described hydraulic station; The described first oil outlet of removing driftage brake control solenoid valve connects the filler opening of described relief valve for setting the brake pretightening force; The oil outlet of described relief valve for setting the brake pretightening force connects the fuel tank of described hydraulic station.
The energy-saving brake hydraulic system of above-mentioned wind power generating set, wherein, described hydraulic station also comprises first throttle valve, pressure transducer, and is located at liquid level liquid thermometer and air filter on the fuel tank front panel of described hydraulic station; Between the oil outlet of described first throttle valve and the fuel tank that is connected to described hydraulic station after described safety overflow valve is in parallel and the first filter-press; Described pressure transducer is located at the oil outlet of the first accumulator and the first filter-press.
The energy-saving brake hydraulic system of above-mentioned wind power generating set, wherein, described hydraulic station also comprises a hand pump, the filler opening of described hand pump be connected with oil outlet with the fuel tank of described hydraulic station be connected the filter-press oil outlet and be connected.
The energy-saving brake hydraulic system of above-mentioned wind power generating set, wherein, the oil outlet of described the first filter-press is connected with the brake control solenoid valve of being connected with described main shaft brake control solenoid valve by the first one-way valve.
The energy-saving brake hydraulic system of above-mentioned wind power generating set, wherein, described direct-acting type decompression relief valve oil outlet is connected with the second throttle valve by the second one-way valve.
The energy-saving brake hydraulic system of above-mentioned wind power generating set, wherein, described driftage brake control solenoid valve is connected with driftage brake oil cylinder group filler opening with impedance screw by the 3rd one-way valve successively
The energy-saving brake hydraulic system of above-mentioned wind power generating set wherein, also is provided with the branch road that is connected the first pressure measuring tie-in between described the first accumulator and the first filter-press.
The energy-saving brake hydraulic system of above-mentioned wind power generating set wherein, also is provided with the branch road that is connected the second pressure measuring tie-in between described the second throttle valve and the main shaft brake oil cylinder group.
The energy-saving brake hydraulic system of above-mentioned wind power generating set, wherein, described driftage brake control solenoid valve also is provided with the branch road that is connected the 3rd pressure measuring tie-in between the brake oil cylinder group with going off course.
The energy-saving brake hydraulic system of above-mentioned wind power generating set, wherein, described main shaft brake control system also comprises a pressure switch, and described pressure switch is located between the second accumulator and the second pressure measuring tie-in.
The energy-saving brake hydraulic system of the wind power generating set that the utility model provides has the following advantages:
Main shaft brake control and driftage brake control are provided.
Adopt direct-acting type decompression relief valve and one-way valve to be used in conjunction with, greatly reduce system cost.
Adopt driftage brake control solenoid valve, reduced energy consumption.
Further perfect wind power generating set hydraulic brake system is broken abroad the monopolization of part components and parts, is beneficial to production domesticization.
Description of drawings
Fig. 1 is the fundamental diagram of the energy-saving brake hydraulic system of wind power generating set of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As shown in Figure 1, the energy-saving brake hydraulic system of the wind power generating set that the utility model provides, comprise main shaft brake oil cylinder group 4 and driftage brake oil cylinder group 5, wherein, main shaft brake control system 2 and driftage brake control system 3 that this system also comprises hydraulic station 1 and is connected with hydraulic station 1.
Wherein, hydraulic station 1 comprises: fuel tank 101, electric-motor pump group 102, the first filter-presses 103, safety overflow valve 104, the first accumulator 105, the first one-way valves 111, pressure transducer 112, the first pressure measuring tie-in 113, liquid level liquid thermometer 114, air filter 115, hand pump 116 and first throttle valve 117.
Fuel tank 101 can by welding behind the carbon steel board bending and molding, also can adopt metal casting; Front panel at fuel tank 101 is installed liquid level liquid thermometer 114, at the cover plate of fuel tank 101 air filter 115 is installed; Electric-motor pump group 102 1 ends connect fuel tank 101, and the other end connects the filler opening of the first filter-press 115; The oil outlet of this first filter-press 115 is connected with filler opening and first accumulator 105 of safety overflow valve 104 respectively; Be connected between the oil outlet of fuel tank 101 and the first filter-press 103 after first throttle valve 117 and safety overflow valve 104 are in parallel; Pressure transducer 112 is located between the oil outlet of the first accumulator 105 and the first filter-press 103; The oil outlet of the first filter-press 103 is connected to main shaft brake control system 2 and driftage brake control system 3 by the first one-way valve 111; Hand pump 116 oil outlets are connected with fuel tank with the first one-way valve 111 and are connected; Also be provided with the branch road that is connected the first pressure measuring tie-in 113 between the first accumulator 105 and the first filter-press 103.
Safety overflow valve 104 uses as safety valve, and the control system maximum pressure is no more than setting value, each hydrovalve and electric elements in the protective system.Pressure transducer 112 exportable two switching values are used for the start and stop of control pump.Liquid level liquid thermometer 114 can direct-detection fuel tank 101 the insides liquid level, after the oil temperature in the fuel tank 101 is higher than setting value, can send the high alarm signal of oil temperature in addition.Air filter 115 includes filter core, and the air that enters fuel tank 101 is effectively filtered, and the oil filler when also can be used as fuel tank 101 oiling simultaneously uses.The in emergency circumstances use that hand pump 116 can not normally start in electric-motor pump group 102 is kept system pressure stablizing within a period of time jointly with the first accumulator 105.
Main shaft brake control system 2 comprises: main shaft brake control solenoid valve 201, remove main shaft brake control solenoid valve 202, direct-acting type decompression relief valve 203, the second throttle valve 204, the second accumulator 205, the second one-way valves 211, pressure switch 212 and the second pressure measuring tie-in 213.
The two ends of main shaft brake control solenoid valve 201 are connected with the oil outlet of the first filter-press 103 and the filler opening of direct-acting type decompression relief valve 203 respectively; The flow-off of direct-acting type decompression relief valve 203 and oil outlet connect respectively the filler opening of fuel tank 101 and the second throttle valve 204; The oil outlet of the second throttle valve 204 connects respectively main shaft brake oil cylinder group 4 and removes the filler opening of main shaft brake control solenoid valve 202; The oil outlet of removing main shaft brake control solenoid valve 202 is connected on the fuel tank 101; The second accumulator 205 is located between the second throttle valve 204 and the main shaft brake oil cylinder group 4; Direct-acting type decompression relief valve 203 oil outlets are connected with the second throttle valve 204 by the second one-way valve 211; Also be provided with the branch road that is connected the second pressure measuring tie-in 213 between the second throttle valve 204 and the main shaft brake oil cylinder group 4; Pressure switch 212 is located between the second accumulator 205 and the second pressure measuring tie-in 213.
When wind-driven generator need to be shut down brake, main shaft brake control solenoid valve 201 and releasing main shaft brake control solenoid valve 202 all were in power failure state, and this moment, solenoid valve 201 conductings were controlled in the main shaft brake, removed main shaft brake control solenoid valve 202 and closed.The hydraulic oil that is provided by electric-motor pump group 102 through direct-acting type decompression relief valve 203 after, pressure is reduced to setting value, enter the rodless cavity of main shaft brake oil cylinder group 4 through the second one-way valve 211, the second throttle valve 204 again, piston rod is stretched out, thereby wind driven generator principal shaft is braked.When wind-driven generator restarts to turn round, main shaft brake control solenoid valve 201 and releasing main shaft brake control solenoid valve 202 all are in to get electricity condition, main shaft brake control this moment solenoid valve 201 cuts out, remove 202 conductings of main shaft brake control solenoid valve, at this moment, hydraulic oil in the main shaft brake oil cylinder group 4 flows back to fuel tank 101, and main shaft brake oil cylinder group 4 is retracted under the effect of spring force, so that the wind driven generator principal shaft brake is unclamped.
Direct-acting type decompression relief valve 203 and the second one-way valve 211 are used in conjunction with, and have guaranteed to use the performance of two hole reduction valve in the past, and have reduced cost.212 pairs of main shaft brake control systems of pressure switch 2 carry out pressure monitor, guarantee to work normally.
Driftage brake control system 3 comprises: driftage brake control solenoid valve 301, first removes driftage brake control solenoid valve 302, second removes driftage brake control solenoid valve 303, be used for setting the relief valve 304 of brake pretightening force, the second filter-press 305, the 3rd one-way valve 311, impedance screw 312 and the 3rd pressure measuring tie-in 313.
The two ends of driftage brake control solenoid valve 301 are connected with the oil outlet of the first filter-press 103 and the filler opening of driftage brake oil cylinder group 5 respectively; The filler opening of the second filter-press 305 connects the oil outlet of the brake oil cylinder group 5 of going off course, and the oil outlet of this second filter-press 305 removes the filler opening of driftage brake control solenoid valve 302 with first respectively and the filler opening of the second releasing driftage brake control solenoid valve 303 is connected; The second oil outlet of removing driftage brake control solenoid valve 303 connects fuel tank 101; The first oil outlet of removing the brake control solenoid valve 302 of going off course connects the filler opening of the relief valve 304 that is used for setting brake pretightening force; The oil outlet that is used for the relief valve 304 of setting brake pretightening force connects fuel tank 101.
Driftage brake control solenoid valve 301 is connected with impedance screw by the 3rd one-way valve 311 successively and is connected with brake oil cylinder group 5 filler openings of going off course; Driftage brake control solenoid valve 301 also is provided with the branch road that is connected the 3rd pressure measuring tie-in 313 between the brake oil cylinder group 5 with going off course.
When blower fan need to be gone off course, driftage brake control solenoid valve 301, the first releasing driftage brake control solenoid valve 302 and second are removed the brake control solenoid valve 303 of going off course and all are in power failure state, the hydraulic oil that is provided by electric-motor pump group 102 enters driftage brake oil cylinder group 5 through driftage brake control solenoid valve 301, the 3rd one-way valve 311, impedance screw 312, thereby cylinder piston rod is stretched out wind driven generator yaw is braked.When blower fan need to be removed when brake driftage, driftage brake control solenoid valve 301 is in to get electricity condition, and first removes driftage brake control solenoid valve 302 or second removes driftage brake control solenoid valve 303 and be in to get electricity condition; When first remove driftage brake control solenoid valve 302 be in during electricity condition, hydraulic oil is removed driftage brake control solenoid valve 302 and is flowed back to fuel tank 101 for the relief valve 304 of setting the brake pretightening force through the second filter-press 305, first successively, brakes so that blower fan is removed driftage; When second remove driftage brake control solenoid valve 303 be in during electricity condition, hydraulic oil is removed driftage brake control solenoid valve 303 through the second filter-press 305 and second successively and is flowed back to fuel tank 101, so that blower fan is removed the driftage brake.
Driftage brake control solenoid valve 301 is by electrical signal control, perfect system automation function, thereby the frequent start-stop of electric-motor pump group 102 when having avoided blower fan to remove the driftage brake, a large amount of saving energy consumption.The first filter-press 103 and the second filter-press 305 are used for the impurity of filtered fluid force feed, and with bypass valve, can send warning when the filter core of filter stops up, prompting should be in time more renew cartridge to guarantee the normal operation of system; After pressure reduction surpassed setting value before and after the filter core, bypass valve was opened overflow, thus assurance system normal operation flow.The first accumulator 105, the second accumulator 205 are under normal circumstances by being hydraulic energy transfer that elastic potential energy stores, when the large flow of the instantaneous needs of system or system pressure appearance fluctuation, it discharges, and before stored energy participation system regulates, pulsation energy and the hydraulic shock of absorption system, main function is to can be used as emergency power source when pump stops decreasing herein, plays the function of system's pressurize.The first one-way valve 111, the 3rd one-way valve 311 prevent the backflow of hydraulic oil in the pipeline.The first pressure measuring tie-in 113, the second pressure measuring tie-in 213, the 3rd pressure measuring tie-in 313 and pressure gauge and pressure-measuring pipe are soft supportingly can to detect each real-time pressure value flexibly.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (10)
1. energy-saving brake hydraulic system of wind power generating set, comprise main shaft brake oil cylinder group (4) and driftage brake oil cylinder group (5), it is characterized in that, this system also comprises hydraulic station (1) and the main shaft brake control system (2) that is connected with described hydraulic station (1) and driftage brake control system (3);
Described hydraulic station (1) comprises fuel tank (101), electric-motor pump group (102), the first filter-press (103), safety overflow valve (104) and the first accumulator (105);
Described electric-motor pump group (102) one ends connect described fuel tank (101), and the other end connects the filler opening of the first filter-press (103); The oil outlet of described the first filter-press (103) is connected with filler opening and first accumulator (105) of described safety overflow valve (104) respectively;
Described main shaft brake control system (2) comprises main shaft brake control solenoid valve (201), removes main shaft brake control solenoid valve (202), direct-acting type decompression relief valve (203), the second throttle valve (204) and the second accumulator (205);
The two ends of described main shaft brake control solenoid valve (201) are connected with the oil outlet of described the first filter-press (103) and the filler opening of direct-acting type decompression relief valve (203) respectively; The flow-off of described direct-acting type decompression relief valve (203) and oil outlet connect respectively the filler opening of described fuel tank (101) and described the second throttle valve (204); The oil outlet of described the second throttle valve (204) connects respectively the filler opening of main shaft brake oil cylinder group (4) and described releasing main shaft brake control solenoid valve (202); The oil outlet of described releasing main shaft brake control solenoid valve (202) is connected on the described fuel tank (101); Described the second accumulator (205) is located between the second throttle valve (204) and the main shaft brake oil cylinder group (4);
Described driftage brake control system (3) comprises driftage brake control solenoid valve (301), first and removes relief valve (304) and the second filter-press (305) that driftage brake control solenoid valve (302), second is removed driftage brake control solenoid valve (303), is used for setting the brake pretightening force;
The two ends of described driftage brake control solenoid valve (301) are connected with (103) oil outlet of described the first filter-press and the filler opening of driftage brake oil cylinder group (5) respectively; The filler opening of described the second filter-press (305) connects the oil outlet of driftage brake oil cylinder group (5), and the oil outlet of this second filter-press (305) is connected with the described first filler opening and the second filler opening of removing driftage brake control solenoid valve (303) of removing driftage brake control solenoid valve (302) respectively; The described second oil outlet of removing driftage brake control solenoid valve (303) connects described fuel tank (101); The described first oil outlet of removing driftage brake control solenoid valve (302) connects the filler opening of described relief valve (304) for setting the brake pretightening force; The oil outlet of described relief valve (304) for setting the brake pretightening force connects described fuel tank (101).
2. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 1, it is characterized in that, described hydraulic station (1) also comprises first throttle valve (117), pressure transducer (112), and is located at liquid level liquid thermometer (114) and air filter (115) on described fuel tank (101) front panel; Described first throttle valve (117) be connected between the oil outlet of described fuel tank (101) and the first filter-press (103) after described safety overflow valve (104) is in parallel; Described pressure transducer (112) is located between the oil outlet of the first accumulator (105) and the first filter-press (103).
3. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 2, it is characterized in that, described hydraulic station (1) also comprises a hand pump (116), the filler opening of described hand pump (116) be connected with oil outlet with described fuel tank (101) be connected filter-press (103) oil outlet and be connected.
4. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 1, it is characterized in that, the oil outlet of described the first filter-press (103) is connected with the brake control solenoid valve (301) of being connected with described main shaft brake control solenoid valve (201) by the first one-way valve (111).
5. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 4 is characterized in that, described direct-acting type decompression relief valve (203) oil outlet is connected with the second throttle valve (204) by the second one-way valve (211).
6. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 5, it is characterized in that, described driftage brake control solenoid valve (301) is connected 312 by the 3rd one-way valve (311) with impedance screw successively) be connected with driftage brake oil cylinder group (5) filler opening.
7. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 1 is characterized in that, also is provided with the branch road that is connected the first pressure measuring tie-in (113) between described the first accumulator (105) and the first filter-press (103).
8. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 7 is characterized in that, also is provided with the branch road that is connected the second pressure measuring tie-in (213) between described the second throttle valve (204) and the main shaft brake oil cylinder group (4).
9. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 8 is characterized in that, described driftage brake control solenoid valve (301) also is provided with the branch road that is connected the 3rd pressure measuring tie-in (313) between the brake oil cylinder group (5) with going off course.
10. the energy-saving brake hydraulic system of wind power generating set as claimed in claim 1, it is characterized in that, described main shaft brake control system (2) also comprises a pressure switch (212), and described pressure switch (212) is located between the second accumulator (205) and the second pressure measuring tie-in (213).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201888331U CN202645846U (en) | 2012-04-28 | 2012-04-28 | Energy-saving type braking hydraulic system for wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201888331U CN202645846U (en) | 2012-04-28 | 2012-04-28 | Energy-saving type braking hydraulic system for wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202645846U true CN202645846U (en) | 2013-01-02 |
Family
ID=47414963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201888331U Expired - Lifetime CN202645846U (en) | 2012-04-28 | 2012-04-28 | Energy-saving type braking hydraulic system for wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202645846U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747371A (en) * | 2015-03-27 | 2015-07-01 | 上海汇益控制系统股份有限公司 | Wind turbine generator hydraulic braking power device with electronic control wind wheel locking effect |
| CN107269465A (en) * | 2017-07-26 | 2017-10-20 | 国电联合动力技术有限公司 | A kind of wind generating set yaw brake fluid system |
| CN113063714A (en) * | 2021-03-26 | 2021-07-02 | 山东日发纺织机械有限公司 | Detection device and detection method for detecting clogging of filter device |
-
2012
- 2012-04-28 CN CN2012201888331U patent/CN202645846U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747371A (en) * | 2015-03-27 | 2015-07-01 | 上海汇益控制系统股份有限公司 | Wind turbine generator hydraulic braking power device with electronic control wind wheel locking effect |
| CN107269465A (en) * | 2017-07-26 | 2017-10-20 | 国电联合动力技术有限公司 | A kind of wind generating set yaw brake fluid system |
| CN113063714A (en) * | 2021-03-26 | 2021-07-02 | 山东日发纺织机械有限公司 | Detection device and detection method for detecting clogging of filter device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201546897U (en) | Hydraulic brake control system for wind driven generator group | |
| CN202645846U (en) | Energy-saving type braking hydraulic system for wind generating set | |
| CN204553088U (en) | The hydraulic braking sytem of wind-driven generator | |
| CN104895967B (en) | Control pipeline used for braking system of servo press | |
| CN101979870A (en) | Wind power generation hydraulic system | |
| CN201686569U (en) | Energy-saving pure water machine | |
| CN101629546B (en) | Integration hydraulic brake system of wind generating set | |
| CN203404058U (en) | Constant pressure inverter controller of water pump | |
| CN203770262U (en) | Low-temperature-resistant hydraulic pump station | |
| CN201858082U (en) | Wind power generation hydraulic system | |
| CN103670922A (en) | Yaw brake hydraulic system of wind driven generator | |
| CN203594717U (en) | Double-pump driven safety brake hydraulic control system | |
| CN202073708U (en) | Hydraulic brake power plant for barring wind turbine generator with constant voltage | |
| CN204895439U (en) | Underground scraper braking system with starter protect function | |
| CN104595287B (en) | Energy-reclaiming constant deceleration hydraulic station | |
| CN102116256A (en) | Safe pressurizer of wind power generation hydraulic system | |
| CN210234941U (en) | Device for relieving normal close bridge brake of underground trackless equipment | |
| CN201858081U (en) | Safety pressure-retaining device of wind power generation hydraulic system | |
| CN209370181U (en) | Hydraulic control system in wind power equipment | |
| CN217841893U (en) | Hydraulic braking device of wind turbine generator | |
| CN220487971U (en) | Hydraulic device for controlling yaw rotor brake for wind power | |
| CN202176910U (en) | High pressure waterway control system | |
| CN101979868A (en) | Spindle brake device for wind power generation hydraulic system | |
| CN203513112U (en) | Hydraulic compensation device of wheel brake | |
| CN201588830U (en) | Hydraulic winch motor balancing valve with pressure protecting function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |