CN201858082U - Wind power generation hydraulic system - Google Patents
Wind power generation hydraulic system Download PDFInfo
- Publication number
- CN201858082U CN201858082U CN2010205895068U CN201020589506U CN201858082U CN 201858082 U CN201858082 U CN 201858082U CN 2010205895068 U CN2010205895068 U CN 2010205895068U CN 201020589506 U CN201020589506 U CN 201020589506U CN 201858082 U CN201858082 U CN 201858082U
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- valve
- pipeline
- oil cylinder
- cylinder group
- main shaft
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- Expired - Lifetime
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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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- Wind Motors (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a wind power generation hydraulic system comprising an oil pump, an external oil tank, a main shaft braking unit, a yaw braking unit and a safety pressure-retaining unit. The oil pump is respectively in pipeline connection with a main shaft braking oil cylinder group through a pressure reducing valve and a first electromagnetic valve, in pipeline connection with a yaw braking oil cylinder group through a first adjustable throttle valve and in pipeline connection with an energy accumulator through a second adjustable throttle valve. The main shaft braking oil cylinder group is in pipeline connection with the external oil tank through a second electrometric valve, the yaw braking oil cylinder group is in pipeline connection with the external oil tank through a third electrometric valve and a first overflow valve, the energy accumulator is in pipeline connection with the external oil tank through a third overflow valve, and the external oil tank is in pipeline connection with a yaw braking oil cylinder by a second overflow valve through the first adjustable throttle valve. The wind power generation hydraulic system not only can perform main shaft braking and yaw braking, but also is provided with a system pressure-retaining device.
Description
Technical field
The utility model belongs to technical field of wind power generation, relates in particular to a kind of wind power generation hydraulic system.
Background technique
The hydraulic braking of wind-driven generator mainly comprises main shaft skidding unit and driftage skidding unit.
Main shaft skidding unit and driftage skidding unit are 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.
Break down at oil pump, motor needs intermittently to shut down and has a rest or during the pipeline oil-break, tending to influence the main shaft braking device and the proper functioning of the braking device of going off course because too high, deficiency of hydraulic fluid pressure or instability in the hydraulic system pipeline cause hydraulic system fault; In addition, in the process of maintenance, often cause pressure reduction in the pipeline, make that main shaft braking device and driftage braking device can't proper functioning because the hydraulic oil in the hydraulic system runs off.
The model utility content
Technical problem to be solved in the utility model provides a kind of wind power generation hydraulic system, when realizing main shaft skidding and driftage skidding, also has pressure holding function, to guarantee the proper functioning of hydraulic system.
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, comprise oil pump, external fuel tank, the main shaft brake units of control main shaft brake oil cylinder group, the driftage brake units of control driftage brake oil cylinder group and the safe pressurize unit of band accumulator, oil pump is connected with main shaft brake oil cylinder group pipeline with first solenoid valve through reduction valve respectively by same pipeline, be connected with driftage brake oil cylinder group pipeline through first adjustable restrictive valve, be connected with the accumulator pipeline through second adjustable restrictive valve, the reduction valve pressure relieving end is connected with the external fuel tank pipeline, main shaft brake oil cylinder group is connected with the external fuel tank pipeline through second solenoid valve, driftage brake oil cylinder group is connected with the external fuel tank pipeline with first relief valve through the 3rd solenoid valve, accumulator is connected with the external fuel tank pipeline through the 3rd relief valve, external fuel tank is connected with driftage brake oil cylinder group pipeline through first adjustable restrictive valve respectively by second relief valve, be connected with the accumulator pipeline through second adjustable restrictive valve, external fuel tank also is connected with the accumulator pipeline through second adjustable restrictive valve with first one-way valve by hand pump.
Oil pump of the present utility model is connected with reduction valve, first adjustable restrictive valve and the second adjustable restrictive valve pipeline respectively with first one-way valve through first filter successively.
Be disposed with the 3rd one-way valve and orifice plug on the pipeline between the utility model reduction valve and first solenoid valve.
Be provided with the 3rd adjustable restrictive valve between the utility model first solenoid valve and the main shaft brake oil cylinder group pipeline, main shaft brake oil cylinder group is connected with the second solenoid valve pipeline through the 3rd adjustable restrictive valve.
The utility model first adjustable restrictive valve is connected with driftage brake oil cylinder group pipeline with throttle valve through the 4th one-way valve successively.
The utility model driftage brake oil cylinder group also is connected with the external fuel tank pipeline through the 4th solenoid valve, and driftage brake oil cylinder group is connected with the 4th solenoid valve pipeline with the 3rd solenoid valve through second filter respectively.
The utility model accumulator also is connected with the external fuel tank pipeline through the 4th throttle valve.
Be respectively arranged with pressure measuring tie-in on the pipeline of the utility model main shaft brake oil cylinder group, driftage brake oil cylinder group and accumulator end.
Adopt the beneficial effect of technique scheme:
The reduction valve that the utility model adopted, the hydraulic oil in pipeline unloads hydraulic oil to external fuel tank, to prevent that hydraulic system is because of the excessive generation operation troubles of loine pressure above automatic conducting in the setting pressure;
The adjustable restrictive valve that is adopted makes the flowing velocity equilibrium of the hydraulic oil in the pipeline, and oil cylinder moves when piston rod is released gently, thus when guaranteeing the brake of hydraulic system main shaft steadily;
First relief valve that is 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 accumulator that is adopted is when oil pump breaks down, motor needs intermittently to shut down and has a rest or during the pipeline oil-break, the hydraulic oil that stores in the accumulator discharges, and flows into main shaft brake units and driftage brake units, to guarantee the proper functioning of these two unit;
The hand pump that is adopted; when blower fan when shutting down maintenance; motor does not start; each electromagnetism also all must not be electric, starts hand pump to main shaft brake and driftage braking device fuel feeding, makes main shaft and the gear ring skidding of going off course; simultaneously will be to accumulator oiling pressure accumulation; in the process of whole maintenance, the pressure loss of the pressure of accumulator in can replenishment system plays the pressurize effect.
Description of drawings
Fig. 1 is a system schematic of the present utility model.
Wherein:
010-oil pump the 011-the first filter the 012-the second check valve, 020-main shaft brake units, 021-pressure-reducing valve, 022-the three check valve 023-orifice plug the 024-the first magnetic valve the 025-the second magnetic valve, 026-the three adjustable throttling 027-main shaft oil cylinder group 030-driftage brake units the 031-the first adjustable throttling the 032-the four check valve 033-driftage oil cylinder group the 034-the second filter the 035-the three magnetic valve the 036-the four magnetic valve the 037-the first overflow valve the 038-the second overflow valve 039-choke valve 040-safe pressurize unit the 041-the second adjustable throttling the 042-the three overflow valve 043-the four adjustable throttling 044-accumulator 045-manual pump the 046-the first check valve 050-external fuel tank 061-pressure measuring tie-in 062-pressure measuring tie-in 063-pressure measuring tie-in.
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, main shaft brake units, driftage brake units, safe pressurize unit and external fuel tank 050.
Oil pump 010 is connected with main shaft brake units, driftage brake units and safe pressurize unit pipeline respectively with second one-way valve 012 through first filter 011 successively by same pipeline.
The main shaft brake units is to be connected with main shaft brake oil cylinder group 027 pipeline through first filter 011, second one-way valve 012, reduction valve 021, the 3rd one-way valve 022, orifice plug 023, first solenoid valve 024, the 3rd adjustable restrictive valve 026 successively by oil pump 010.
Main shaft brake oil cylinder group 027 is made up of two main shaft brake oil cylinders that are set up in parallel.
First filter 011 falls the contaminant filter of hydraulic oil in the pipeline, thereby prevents that impurity from precipitating fouling in pipeline.
Second one-way valve 012 and the 3rd one-way valve 022 prevent the backflow of hydraulic oil in the pipeline.
The pressure switch pipeline is connected on the pipeline of the 3rd adjustable restrictive valve 026 and main shaft brake oil cylinder group 027; Simultaneously, pressure measuring tie-in 061 also is connected on the pipeline of the 3rd adjustable restrictive valve 026 and main shaft brake oil cylinder group 027.
Pressure switch and pressure measuring tie-in 061 show whether main shaft brake units 020 is in normal working state.
The 3rd adjustable restrictive valve 026 can guarantee the flowing velocity equilibrium of the hydraulic oil in the hydraulic pipe line, and this makes that the oil cylinder piston bar action when releasing in the main shaft brake oil cylinder group 027 is mild, thus when guaranteeing the brake of hydraulic system main shaft steadily.
Main shaft brake oil cylinder group 027 is connected with external fuel tank 050 pipeline by second solenoid valve 025, and second solenoid valve 025 is connected on the pipeline between first solenoid valve 024 and the 3rd adjustable restrictive valve 026.
The pressure relieving end of reduction valve 021 is connected with external fuel tank 050 with pipeline between the external fuel tank 050 by second solenoid valve 025.
Reduction valve 021 automatic conducting when the hydraulic oil in pipeline surpasses setting pressure is unloaded hydraulic oil to external fuel tank 050, to prevent that hydraulic system is because of the excessive generation operation troubles of loine pressure.
First solenoid valve 024 and second solenoid valve 025 are two-position two-way solenoid valve.
When wind-driven generator needed main shaft to shut down brake, first solenoid valve 024 and second solenoid valve 025 all were in power failure state, first solenoid valve, 024 left road conducting this moment, and second solenoid valve 025 cuts out.The hydraulic oil that is provided by oil pump 010 is through behind the reduction valve 021, pressure is reduced to setting value, arrive the tie point of second solenoid valve 025 on the pipeline again through position, the left side path of the 3rd one-way valve 022, orifice plug 023 and first solenoid valve 024, because second solenoid valve 025 is in closed condition, so hydraulic oil all enters the rodless cavity of main shaft oil cylinder by the 3rd adjustable restrictive valve 026, piston rod is stretched out, thereby wind driven generator principal shaft is braked.
When wind-driven generator restarts to turn round, first solenoid valve 024 and second solenoid valve 025 all be in electricity condition, this moment first solenoid valve 024 close 025 conducting of second solenoid valve.First solenoid valve 024 is in closed condition, do not have hydraulic oil to enter main shaft brake oil cylinder group 027 this moment, and second solenoid valve 025 is on state simultaneously, hydraulic oil in the main shaft brake oil cylinder group 027 is by second solenoid valve 025, flow to external fuel tank 050 through pressure relief opening, the oil cylinder piston bar of main shaft brake oil cylinder group 027 is withdrawn under the effect of spring force, makes the wind driven generator principal shaft brake unclamp.
When the pusher retracted of main shaft brake oil cylinder behind settling position, second solenoid valve, 025 dead electricity, and in the whole process that wind-driven generator runs well, first solenoid valve 024 be in all the time electricity condition.
The driftage brake units is to be connected with driftage brake oil cylinder group 033 1 end pipelines through first filter 011, second one-way valve 012, first adjustable restrictive valve 031, the 4th one-way valve 032, throttle valve 039 successively by oil pump 010, driftage brake oil cylinder group 033 the other end is connected with external fuel tank 050 pipeline through second filter 034, the 3rd solenoid valve 035, first relief valve 037 successively, and driftage brake oil cylinder group 033 the other end also is connected with external fuel tank 050 pipeline through second filter 034, the 4th solenoid valve 036 successively.The pipeline of the 4th solenoid valve 036 and the 3rd solenoid valve 035 and first relief valve 037 is set up in parallel.
Driftage brake oil cylinder group 033 is made up of the driftage oil cylinder that six series connection are provided with.
Pipeline between second one-way valve 012 and first adjustable restrictive valve 031 is provided with the branch road that passes to external fuel tank 050, and this branch road is provided with second relief valve 038.
The hydraulic fluid pressure value of second relief valve 038 in pipeline 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.
First adjustable restrictive valve 031 guarantees the flowing velocity equilibrium of the hydraulic oil in the hydraulic pipe line, and this makes that action was mild when driftage brake oil cylinder was released piston rod, thus when guaranteeing hydraulic system driftage brake steadily.
Second one-way valve 012 and the 4th one-way valve 032 prevent the backflow of hydraulic oil in the pipeline.
First filter 011 and second filter 034 fall the contaminant filter of hydraulic oil in the pipeline, thereby prevent that impurity from precipitating fouling in pipeline.
Pressure measuring tie-in 062 pipeline is connected on the pipeline of throttle valve 039 and driftage brake oil cylinder group 033, and pressure measuring tie-in 062 is measured driftage brake units 030 and whether is in normal working state.
In wind-driven generator normal operation process, the 3rd solenoid valve 035 and the 4th solenoid valve 036 equal dead electricity are in closed condition, the hydraulic oil that is provided by oil pump 010 is successively through first filter 011, second one-way valve 012, first adjustable restrictive valve 031, the 4th one-way valve 032, throttle valve 039 enters the rodless cavity of driftage brake oil cylinder group 033 1 ends, flow out from the other end then, through second filter 034, arrive the jointing of the 3rd solenoid valve 035 and the 4th solenoid valve 036, because the 3rd solenoid valve 035 and the 4th solenoid valve 036 all are in closed condition, hydraulic oil can't pass through, the piston rod of driftage brake oil cylinder stretches out under the effect of pressure hydraulic oil, makes blower fan driftage gear ring skidding.
When wind-driven generator need be gone off course, the 3rd solenoid valve 035 gets the electric opening state that is in, hydraulic oil in the driftage brake oil cylinder flow to external fuel tank 050 through second filter 034, the 3rd solenoid valve 035 a right path, first relief valve 037, so piston rod withdrawal of driftage brake oil cylinder, make the brake of driftage gear ring unclamp wind driven generator yaw.This moment is because the setting pressure of the 3rd solenoid valve 035 is 55bar, so the rodless cavity of driftage brake oil cylinder will remain the back pressure of 55bar, oil cylinder piston bar withdrawal distance is less.
When wind-driven generator need untie the mooring rope, the 3rd solenoid valve 035 keeps power failure state, the 4th solenoid valve 036 gets the electric opening state that is in, hydraulic oil in the driftage brake oil cylinder is through second filter 034, the 4th solenoid valve 036 a right path, flow to external fuel tank 050, owing to do not set back pressure in this oil circuit, the piston rod withdrawal amount of driftage brake oil cylinder is bigger, driftage brake gear ring quantity of margin is big, and blower fan unties the mooring rope.
Safe pressurize unit is to connect accumulator 044 through first filter 011, second one-way valve 012, second adjustable restrictive valve, 041 pipeline successively by oil pump 010, external fuel tank 050 connects accumulator 044 through second relief valve 038, second adjustable restrictive valve, 041 pipeline successively, and external fuel tank also connects accumulator 044 through hand pump 045, first one-way valve 046, second adjustable restrictive valve, 041 pipeline successively.Between the accumulator 044 and second adjustable restrictive valve 041, also be provided with two branch roads that are set up in parallel that pass to external fuel tank 050, article one, branch road is to pass to external fuel tank 050 by the 3rd relief valve 042, and another is to pass to external fuel tank 050 by the 4th adjustable restrictive valve 043.
Pressure measuring tie-in 063 pipeline is connected on the pipeline of the 3rd relief valve 042 and accumulator 044, and pressure measuring tie-in 063 is measured safe pressurize unit 040 and whether is in normal working state.
In the blower fan operation process, the 4th adjustable restrictive valve 043 is closed fully, the setting pressure of the 3rd relief valve 042 is greater than the setting pressure of second relief valve 038, so the 3rd relief valve 042 will can not opened, the hydraulic oil that is provided by oil pump 010 arrives accumulator 044 through second adjustable restrictive valve 041, enters accumulator 044 and stores.
When electric-motor pump group 010 breaks down or motor need intermittently shut down rest the time or during the pipeline oil-break; the hydraulic oil that stores in the accumulator 044 will discharge; flow into main shaft brake units 020 and driftage brake units 030, to guarantee the proper functioning of these two unit.
In addition; when blower fan when shutting down maintenance; motor does not start; start hand pump 045; fluid in the external fuel tank 050 is sucked, be conducted to main shaft brake units 020 and the in-line of the brake units 030 of going off course, to main shaft brake units 020 and driftage brake units 030 fuel feeding through first one-way valve 046; making main shaft and driftage skidding, mainly is to accumulator 044 oiling pressure accumulation simultaneously.
In the process of whole maintenance, the pressure loss of the pressure of accumulator 044 in can replenishment system, play the pressurize effect, cooperate the 3rd one-way valve 022 of main shaft brake in-line and the 4th one-way valve 032 of driftage brake in-line, the pressure of assurance main shaft oil cylinder and driftage oil cylinder can not reduce, for the reliability that main shaft brakes and driftage is braked provides double insurance.
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 (9)
1. wind power generation hydraulic system, it is characterized in that: comprise oil pump, external fuel tank, the main shaft brake units of control main shaft brake oil cylinder group, the driftage brake units of control driftage brake oil cylinder group and the safe pressurize unit of band accumulator, oil pump is connected with main shaft brake oil cylinder group pipeline with first solenoid valve through reduction valve respectively by same pipeline, be connected with driftage brake oil cylinder group pipeline through first adjustable restrictive valve, be connected with the accumulator pipeline through second adjustable restrictive valve, the reduction valve pressure relieving end is connected with the external fuel tank pipeline, main shaft brake oil cylinder group is connected with the external fuel tank pipeline through second solenoid valve, driftage brake oil cylinder group is connected with the external fuel tank pipeline with first relief valve through the 3rd solenoid valve, accumulator is connected with the external fuel tank pipeline through the 3rd relief valve, external fuel tank is connected with driftage brake oil cylinder group pipeline through first adjustable restrictive valve respectively by second relief valve, be connected with the accumulator pipeline through second adjustable restrictive valve, external fuel tank also is connected with the accumulator pipeline through second adjustable restrictive valve with first one-way valve by hand pump.
2. wind power generation hydraulic according to claim 1 system, it is characterized in that: described oil pump is connected with reduction valve, first adjustable restrictive valve and the second adjustable restrictive valve pipeline respectively with first one-way valve through first filter successively.
3. wind power generation hydraulic according to claim 1 system is characterized in that: be disposed with the 3rd one-way valve and orifice plug on the pipeline between the described reduction valve and first solenoid valve.
4. wind power generation hydraulic according to claim 1 system, it is characterized in that: be provided with the 3rd adjustable restrictive valve between described first solenoid valve and the described main shaft brake oil cylinder group pipeline, described main shaft brake oil cylinder group is connected with the second solenoid valve pipeline through the 3rd adjustable restrictive valve.
5. wind power generation hydraulic according to claim 1 system, it is characterized in that: described first adjustable restrictive valve is connected with described driftage brake oil cylinder group pipeline with throttle valve through the 4th one-way valve successively.
6. wind power generation hydraulic according to claim 1 system, it is characterized in that: described driftage brake oil cylinder group also is connected with the external fuel tank pipeline through the 4th solenoid valve.
7. wind power generation hydraulic according to claim 6 system, it is characterized in that: described driftage brake oil cylinder group is connected with the 4th solenoid valve pipeline with the 3rd solenoid valve through second filter respectively.
8. wind power generation hydraulic according to claim 1 system, it is characterized in that: described accumulator also is connected with described external fuel tank pipeline through the 4th throttle valve.
9. wind power generation hydraulic according to claim 1 system is characterized in that: be respectively arranged with pressure measuring tie-in on the pipeline of described main shaft brake oil cylinder group, driftage brake oil cylinder group and accumulator end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205895068U CN201858082U (en) | 2010-11-03 | 2010-11-03 | Wind power generation hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205895068U CN201858082U (en) | 2010-11-03 | 2010-11-03 | Wind power generation hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858082U true CN201858082U (en) | 2011-06-08 |
Family
ID=44103890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205895068U Expired - Lifetime CN201858082U (en) | 2010-11-03 | 2010-11-03 | Wind power generation hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858082U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979870A (en) * | 2010-11-03 | 2011-02-23 | 上海电气液压气动有限公司 | Wind power generation hydraulic system |
| CN103498758A (en) * | 2013-09-17 | 2014-01-08 | 北京金风科创风电设备有限公司 | Hydraulic yawing system |
| CN104895967A (en) * | 2015-06-08 | 2015-09-09 | 济南二机床集团有限公司 | Control pipeline used for braking system of servo press |
| 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 CN2010205895068U patent/CN201858082U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979870A (en) * | 2010-11-03 | 2011-02-23 | 上海电气液压气动有限公司 | Wind power generation hydraulic system |
| CN103498758A (en) * | 2013-09-17 | 2014-01-08 | 北京金风科创风电设备有限公司 | Hydraulic yawing system |
| CN103498758B (en) * | 2013-09-17 | 2015-11-25 | 北京金风科创风电设备有限公司 | Hydraulic yawing system |
| CN104895967A (en) * | 2015-06-08 | 2015-09-09 | 济南二机床集团有限公司 | Control pipeline used for braking system of servo press |
| 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |