CN109595129A - Impeller locking hydraulic system and wind generating set - Google Patents
Impeller locking hydraulic system and wind generating set Download PDFInfo
- Publication number
- CN109595129A CN109595129A CN201811522590.9A CN201811522590A CN109595129A CN 109595129 A CN109595129 A CN 109595129A CN 201811522590 A CN201811522590 A CN 201811522590A CN 109595129 A CN109595129 A CN 109595129A
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- oil
- oil cylinder
- valve
- rod chamber
- rodless cavity
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- 239000000446 fuel Substances 0.000 claims description 93
- 210000000635 valve cell Anatomy 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 267
- 239000010720 hydraulic oil Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluid-Pressure Circuits (AREA)
- Wind Motors (AREA)
Abstract
The invention provides an impeller locking hydraulic system and a wind generating set, wherein the impeller locking hydraulic system comprises: the first oil cylinder comprises a rod cavity and a rodless cavity; the second oil cylinder comprises a rod cavity and a rodless cavity; the oil pressure adjusting unit is arranged on an oil supply path of the rodless cavity of the first oil cylinder and is communicated in a one-way mode in the oil supply direction; wherein, the oil circuit connected with the inlet of the oil pressure adjusting unit is provided with a branch point, and the branch point is connected with the oil supply path of the rodless cavity of the second oil cylinder. The impeller locking hydraulic system according to the embodiment of the invention can prevent the locking pin from being stuck. The impeller locking hydraulic system provided by the embodiment of the invention can reduce the operation process, reduce the complexity of the system and improve the reliability of the system.
Description
Technical field
The invention belongs to wind power generation fields, and more particularly, the impeller locking for being related to a kind of wind power generating set is hydraulic
System and wind power generating set.
Background technique
Wind power generating set generally comprises the components such as blade, wheel hub, cabin, pylon and pedestal, needs in wind power generating set
When there are personnel to enter wheel hub progress upkeep operation or relevant operation, need impeller (blade+wheel hub) to lock, to guarantee to enter
The safety of the personnel of wheel hub.In addition, needing to discharge the locking of impeller, therefore impeller lock when wind power generating set operates normally
Determine the important component that hydraulic system is wind power generating set.
Specifically, when staff needs to enter wheel hub operation, lock is locked using impeller locking HYDRAULIC CONTROL SYSTEM
Determine impeller, prevent impeller from rotating, to ensure the personal safety of staff.
For big megawatt of unit, in order to improve safety, it usually needs bilobed wheel locking pin, however, needing to wind-force
When the impeller of generating set is locked, if the locking pin of oil cylinder is made to stretch out and/or retract at the same time simultaneously, it is likely that cause
Locking pin it is stuck.In addition, if the locking pin for keeping the resistance being subject to big is forced first to retract, it is also possible to lead to the locking pin card
Extremely.
Current impeller locking hydraulic system is other than the stuck defect of locking pin, and there is also because of work-based logic, operation
Process is cumbersome and easily causes maloperation, because hydraulic system is complicated, hydraulic part and electric control element are more, more than potential failure point due to influence
The disadvantages of system reliability.
Summary of the invention
It is an object of the present invention to effectively prevent the stuck of the locking pin of oil cylinder.
According to an aspect of the present invention, a kind of impeller locking hydraulic system of wind power generating set includes: the first oil cylinder, the
One oil cylinder includes rod chamber and rodless cavity；Second oil cylinder, the second oil cylinder include rod chamber and rodless cavity；Oil pressure adjusts unit, oil
Pressure is adjusted on the fuel supply path for the rodless cavity that unit is arranged in the first oil cylinder, and oil pressure adjusts unit and unidirectionally leads on fuel feeding direction
It is logical；Wherein, the oil circuit that connect of entrance of unit is adjusted with oil pressure equipped with branch point, the rodless cavity of branch point and the second oil cylinder
Fuel supply path connection.
According to an embodiment of the invention, impeller locking hydraulic system may also include valve unit, valve unit connection
Between the entrance that hydraulic power source and oil pressure adjust unit, wherein the rod chamber of the rod chamber of the first oil cylinder and the second oil cylinder with change
It is connected to valve cell, to form the rod chamber from the rod chamber of the first oil cylinder to oil-collecting unit and from the second oil cylinder to oil-collecting list
The oil return path of member.
According to an embodiment of the invention, it may include the first sequence valve and pressure reducing valve that oil pressure, which adjusts unit, the first sequence valve
Entrance can be connected to the output end of valve unit, and the outlet of the first sequence valve can be connected to the entrance of pressure reducing valve, pressure reducing valve
Outlet can be connected to the rodless cavity of the first oil cylinder.
According to an embodiment of the invention, the first delivery outlet of output end can be directly connected to the rodless cavity of the second oil cylinder, it is defeated
Second delivery outlet of outlet can directly be connected to the rod chamber of the first oil cylinder, and the second delivery outlet can have bar with the second oil cylinder
Chamber is directly connected to.
According to an embodiment of the invention, valve unit can be three position four-way directional control valve, the P mouth of three position four-way directional control valve
Input terminal can be located at T mouthfuls, the A mouth of three position four-way directional control valve and B mouthfuls can be located at output end.
According to an embodiment of the invention, the rodless cavity of the first oil cylinder for can be equipped on oil return path first pressure after
Electric appliance, and the rod chamber of the second oil cylinder for second pressure relay can be equipped on oil return path.
According to an embodiment of the invention, the confession for oil return path and the rodless cavity of the second oil cylinder of the rodless cavity of the first oil cylinder
First check valve can be installed between oil return path.
According to an embodiment of the invention, the second sequence valve can be installed on the fuel supply path of the rod chamber of the second oil cylinder,
The rod chamber for oil return path and the first oil cylinder of the rod chamber of second oil cylinder it is single for second can be equipped on oil return path
To valve.
According to an embodiment of the invention, impeller locking hydraulic system may also include the power supply of control three position four-way directional control valve
Control unit, control unit are configured as: when impeller locking hydraulic system locking impeller, being controlled and supplied to three position four-way directional control valve
Electricity is connected to the P mouth of three position four-way directional control valve with A mouthfuls, and T mouthfuls are connected to B mouthfuls, to be formed as the rodless cavity fuel feeding of the first oil cylinder
The first fuel supply path and the rodless cavity fuel feeding for the second oil cylinder the second fuel supply path, and release the first oil cylinder rod chamber
Second oil return path of the oil in the rod chamber of the second oil cylinder of the first oil return path and release of interior oil；When impeller locking is hydraulic
When system unlocks impeller, controls and power to three position four-way directional control valve, be connected to the P mouth of three position four-way directional control valve with B mouthfuls, T mouthfuls and A
Mouthful connection, to be formed as the third fuel supply path of the rod chamber fuel feeding of the first oil cylinder and the rod chamber fuel feeding for the second oil cylinder
The third oil return path of oil in 4th fuel supply path, and the rodless cavity of the first oil cylinder of release and the second oil cylinder of release are without bar
4th oil return path of intracavitary oil；Wherein, the first fuel supply path successively passes through three position four-way directional control valve, the first sequence valve, subtracts
The rodless cavity of pressure valve and the first oil cylinder, the second fuel supply path successively pass through the rodless cavity of three position four-way directional control valve and the second oil cylinder,
Third fuel supply path successively passes through the rod chamber of three position four-way directional control valve and the first oil cylinder, and the 4th fuel supply path successively passes through three
The rod chamber of four-way reversing valve and the second oil cylinder, the rod chamber of the first oil cylinder is successively passed through in the first oil return path and 3-position 4-way changes
To valve, the rod chamber and three position four-way directional control valve of the second oil cylinder are successively passed through in the second oil return path, and third oil return path successively passes through
The rodless cavity, the first check valve and three position four-way directional control valve of the first oil cylinder are crossed, the second oil cylinder is successively passed through in the 4th oil return path
Rodless cavity and three position four-way directional control valve.
According to an embodiment of the invention, impeller locking hydraulic system may also include the power supply of control three position four-way directional control valve
Control unit, control unit are configured as: when impeller locking hydraulic system locking impeller, being controlled and supplied to three position four-way directional control valve
Electricity is connected to the P mouth of three position four-way directional control valve with A mouthfuls, and T mouthfuls are connected to B mouthfuls, to be formed as the rodless cavity fuel feeding of the first oil cylinder
The first fuel supply path and the rodless cavity fuel feeding for the second oil cylinder the second fuel supply path, and release the first oil cylinder rod chamber
5th oil return path of the oil in the rod chamber of the second oil cylinder of the first oil return path and release of interior oil；When impeller locking is hydraulic
When system unlocks impeller, controls and power to three position four-way directional control valve, be connected to the P mouth of three position four-way directional control valve with B mouthfuls, T mouthfuls and A
Mouthful connection, to be formed as the third fuel supply path of the rod chamber fuel feeding of the first oil cylinder and the rod chamber fuel feeding for the second oil cylinder
The third oil return path of oil in 5th fuel supply path, and the rodless cavity of the first oil cylinder of release and the second oil cylinder of release are without bar
4th oil return path of intracavitary oil；Wherein, the first fuel supply path successively passes through three position four-way directional control valve, the first sequence valve, subtracts
The rodless cavity of pressure valve and the first oil cylinder, the second fuel supply path successively pass through the rodless cavity of three position four-way directional control valve and the second oil cylinder,
Third fuel supply path successively passes through the rod chamber of three position four-way directional control valve and the first oil cylinder, and the 5th fuel supply path successively passes through three
The rod chamber of the first oil cylinder is successively passed through in the rod chamber of four-way reversing valve, the second sequence valve and the second oil cylinder, the first oil return path
And three position four-way directional control valve, rod chamber, second one-way valve and the 3-position 4-way that the second oil cylinder is successively passed through in the 5th oil return path change
To valve, the rodless cavity of the first oil cylinder, the first check valve and three position four-way directional control valve, the 4th oil return are successively passed through in third oil return path
The rodless cavity and three position four-way directional control valve of the second oil cylinder are successively passed through in path.
According to another aspect of the present invention, a kind of wind power generating set includes above-mentioned impeller locking hydraulic system.
The impeller locking hydraulic system of embodiment according to the present invention can prevent the locking pin of oil cylinder stuck.
The impeller locking hydraulic system of embodiment according to the present invention can reduce operating process, reduce system complexity,
Improve system reliability.
The impeller of embodiment according to the present invention locks hydraulic system, and simple structure is at low cost, and is wind power generating set
Maintenance bring great convenience.
Detailed description of the invention
In conjunction with the accompanying drawings, from the description of the following examples, these and/or other aspects and advantage of the present invention will
It becomes apparent, and it is more readily appreciated that wherein:
Fig. 1 is the schematic block diagram of the impeller locking hydraulic system of first embodiment according to the present invention；
Fig. 2 is the schematic block diagram of the impeller locking hydraulic system of second embodiment according to the present invention；
Fig. 3 is the schematic block diagram of the impeller locking hydraulic system of third embodiment according to the present invention.
Drawing reference numeral:
1: hydraulic power source；2: oil-collecting unit；40: valve unit；31: the first sequence valves；32: pressure reducing valve；30: oil pressure is adjusted
Unit；61: first pressure relay；50: the first check valves；10: the first oil cylinders；20: the second oil cylinders；62: second pressure relay
Device；A1, A2: rodless cavity；B1, B2: rod chamber；
70: second one-way valve；80: the second sequence valves；
3: the first solenoid valves；4: second solenoid valve；5: third check valve；6: third sequence valve；41: 3-position 4-way commutation
Valve.
Specific embodiment
The preferred embodiment of the present invention is described below with reference to accompanying drawings, in the accompanying drawings identical label indicates identical always
Component.
Fig. 1 is the schematic block diagram of the impeller locking hydraulic system of first embodiment according to the present invention.
Impeller locking hydraulic system of the invention may include that the first oil cylinder 10 and the second oil cylinder 20, oil pressure adjust unit 30.
First oil cylinder 10 may include rodless cavity A1 and rod chamber B1, and the second oil cylinder 20 may include rodless cavity A2 and have bar
Chamber B2, rod chamber B1 and B2 can be equipped with locking pin, under the action of pressure difference of the locking pin between rodless cavity and rod chamber,
It stretches out or retracts.
First oil cylinder 10 and the second oil cylinder 20 may be mounted on the dead axle of wind power generating set, be mounted on rod chamber B1 and
Groove on the moving axis of wind power generating set etc. can be inserted in locking pin in B2.Optionally, the first oil cylinder 10 and the second oil cylinder
20 cylinder body can be used as locking pin, the locking pin can pressure difference between rodless cavity and rod chamber under the action of, stretch out or
It retracts.The piston rod of rod chamber B1 and B2 can be fixed on the dead axle of wind power generating set, the first oil cylinder 10 and the second oil cylinder
Groove on the moving axis of wind power generating set etc. can be inserted in 20 cylinder body.As described above, if the first oil cylinder 10 and the second oil
Cylinder 20 is stretched out and/or is retracted at the same time simultaneously, then the locking pin in the first oil cylinder 10 and the second oil cylinder 20 may be stuck or locked.
Oil pressure of the invention is adjusted on the fuel supply path for the rodless cavity A1 that unit 30 can be arranged in the first oil cylinder 10, to adjust
The unlatching oil pressure of the fuel supply path is saved, to delay the locking pin of the first oil cylinder 10 to stretch out, or in the locking of the second oil cylinder 20
After pin has completed locking, the locking pin of the first oil cylinder 10 just starts to stretch out.It is single on fuel feeding direction that oil pressure adjusts unit 30
To conducting, thus, it is possible to which the first oil cylinder 10 and the second oil cylinder 20 sequentially lock, to prevent the first oil cylinder 10 and/or the second oil
The locking pin of cylinder 20 is stuck.
Branch point C can be equipped on the oil circuit connecting with the entrance that oil pressure adjusts unit 30, branch point C can also be with the second oil
The fuel supply path of the rodless cavity A2 of cylinder 20 connects.
In addition, impeller locking hydraulic system may also include valve unit 40, valve unit 40 is attached to hydraulic power source 1
Between the entrance for adjusting unit 30 oil pressure, the rod chamber B2 of the rod chamber B1 of the first oil cylinder 10 and the second oil cylinder 20 can with change
It is connected to valve cell 40, has bar from the rod chamber B1 of the first oil cylinder 10 to oil-collecting unit 2 and from the second oil cylinder 20 to be formed
Chamber B2 is to the oil return path of oil-collecting unit 2.Specifically, the input terminal of valve unit 40 can be connected to hydraulic power source 1, reversal valve
The rodless cavity A2 of input terminal and the second oil cylinder 20 that the output end of unit 40 can adjust unit 30 with oil pressure respectively is connected to, and is changed
It can realize that the type of valve unit 40 is not specifically limited by multiple solenoid valves to valve cell 40, as long as can change
For the flow direction of the hydraulic oil in oil return path.
Although showing fuel feeding in attached drawing and oil return path sharing valve unit 40, the embodiment of the present invention is not limited to
This, for example, in the chamber of the first oil cylinder 10 and the second oil cylinder 20 in addition oil supplying hole and oil outlet can be opened up, and in addition setting and confession
The separated oil return path of oil circuit footpath.
Preferably, valve unit 40 can be realized by the multiple 2/2-way solenoid valves being connected in parallel, the first oil cylinder
The rod chamber B2 of 10 rod chamber B1 and the second oil cylinder 20 can connect via valve unit 40 and oil-collecting unit 2 or hydraulic power source 1
It is logical, for example, the rodless cavity and rod chamber of the first oil cylinder 10 and the second oil cylinder 20 for 2/2-way is respectively arranged on oil return path
Solenoid valve (for example, 4 2/2-way solenoid valves) realizes the connection with oil-collecting unit 2 or hydraulic power source 1.
For example, the rod chamber B1 and hydraulic power source 1 of first oil cylinder 10 connect when to the rod chamber B1 fuel feeding of the first oil cylinder 10
Logical, when discharging the oil of rod chamber B1 of the first oil cylinder 10, the rod chamber B1 of the first oil cylinder 10 is connected to oil-collecting unit 2.
It should be noted that hydraulic power source 1 can be the hydraulic power source outside impeller locking hydraulic system, in other words, hydraulic power source 1
Other hydraulic systems that can come from wind power generating set are also possible to the included hydraulic power source of impeller locking hydraulic system, for example,
Hydraulic oil container.Oil-collecting unit 2 can be the included component of impeller locking hydraulic system, for example, hydraulic oil container.In addition, hydraulic power source 1
It can integrate with oil-collecting unit 2 as single component.
It is not shown, impeller locking hydraulic system of the invention may also include transfer tube, accumulator, relief valve, each
The components such as kind sensor.
As shown in Figure 1, it may include the first sequence valve 31 that oil pressure, which adjusts unit 30, the first sequence valve 31 may be mounted at the
Between the rodless cavity A1 of one oil cylinder 10 and the output end of valve unit 40.Here, the first sequence valve 31 can also be pressed by opening
The biggish check valve of power realizes that the first sequence valve 31 and check valve here can be considered as oil pressure adjusting valve.
The oil pressure that the output end that the cracking pressure of first sequence valve 31 can be higher than valve unit 40 exports therefore can
To postpone the activationary time of the fuel supply path of the rodless cavity A1 of the first oil cylinder 10.
Oil pressure, which adjusts unit 30, to include pressure reducing valve 32, and the entrance of the first sequence valve 31 can be with valve unit 40
Output end connection, the outlet of the first sequence valve 31 can be connected to the entrance of pressure reducing valve 32, and the outlet of pressure reducing valve 32 can be with
The rodless cavity A1 of first oil cylinder 10 is connected to.
The oil pressure improved by the first sequence valve 31 can be reduced to and the rodless cavity of the second oil cylinder 20 by pressure reducing valve 32
The oil pressure of hydraulic oil on fuel supply path is equal, or lower than the hydraulic oil on the fuel supply path of the rodless cavity of the second oil cylinder 20
Oil pressure.
In addition, the first delivery outlet of the output end of valve unit 40 can directly connect with the rodless cavity A2 of the second oil cylinder 20
Logical, the second delivery outlet of the output end of valve unit 40 can be directly connected to the rod chamber B1 of the first oil cylinder 10, and the
Two delivery outlets can be directly connected to the rod chamber B2 of the second oil cylinder 20.Thus, it is possible to reduce the complexity of hydraulic system.
Here, the input, output end, input port of valve unit 40, delivery outlet be connected to 1 side of hydraulic power source or with
The connection of oil cylinder side is judgment basis, is being related to when entering oily and fuel-displaced of specific port, is being converted into exporting respectively to being adapted to property
End, input terminal, delivery outlet, input port.
As shown in Figure 1, the rodless cavity A1 of the first oil cylinder 10 for first pressure relay can be equipped on oil return path
61, and the rod chamber B2 of the second oil cylinder 20 for second pressure relay 62 can be equipped on oil return path.
When the locking pin of the first oil cylinder 10 completes locking, the oil pressure of the rodless cavity A1 of the first oil cylinder 10 increases and is more than pre-
Definite value, at this point, first pressure relay 61 can issue instruction or instruction, based on the instruction or instruction control valve unit
40.For example, when the locking pin of the first oil cylinder 10 completes locking, it can be based on the instruction (example of the sending of first pressure relay 61
Such as, the instruction issued by indicator) stop powering to valve unit 40, middle position " O " function can be realized state holding, from
And the service life of valve unit 40 (for example, three position four-way directional control valve) can be improved.
Similarly, when completing the release of locking pin of the second oil cylinder 20, the oil pressure of the rod chamber B2 of the second oil cylinder 20 increases
It greatly and is more than predetermined value, at this point, second pressure relay 62 can issue instruction or instruction, based on the instruction or instruction control
Valve unit 40, to stop the rod chamber B2 fuel feeding to the second oil cylinder 20.
Furthermore it is also possible to the first oil cylinder 10 rod chamber B1 on oil return path or the rodless cavity of the second oil cylinder 20
A2 for pressure switch is arranged in loop path.Based on the considerations of reducing circuit complexity, these pressure switches can be by
It omits.
In addition, in the present invention, referring to fuel feeding and the path that oil return shares for oil return path.For example, the first oil cylinder 10
The path that can refer between rodless cavity A1 and the installation point of first pressure relay 61 for oil return path of rodless cavity A1.
As shown in Figure 1, the confession for oil return path and the rodless cavity A2 of the second oil cylinder 20 of the rodless cavity A1 of the first oil cylinder 10
First check valve 50 is installed between oil return path.First check valve 50 can make rodless cavity A1 and first pressure relay 61
Path between installation point is used as oil return path, for example, the hydraulic oil in rodless cavity A1 is in the unlatching for reaching the first check valve 50
In the case where pressure, the connecting for oil return path for oil return path and the second oil cylinder 20 of the rodless cavity A1 of the first oil cylinder 10 can be made
It is logical, to flow back to oil-collecting unit 2 for the hydraulic oil on oil return path with the second oil cylinder 20.
As described above, valve unit 40 is preferably three position four-way directional control valve, it is possible thereby to reduce operating process, reduce system
System complexity.The P mouth of three position four-way directional control valve and T mouthful can be positioned at the input terminals of valve unit mentioned above, and three four
The A mouth of logical reversal valve can be located at the output end of valve unit mentioned above with B mouthfuls.
Control to valve unit and the locking of impeller can be realized by manual operation.In addition, of the invention
The impeller locking hydraulic system of embodiment can also include the control unit (not shown) of the power supply of control three position four-way directional control valve.
The control unit can be realized by integrated circuit, can be integrated with the power module of valve unit, and can pass through collection
It is realized at circuit.
For example, control unit can be controlled and be supplied to three position four-way directional control valve when impeller locks hydraulic system locking impeller
Electricity is connected to the P mouth of three position four-way directional control valve with A mouthfuls, and T mouthfuls are connected to (spool a is inclined) with B mouthfuls, to be formed as the first oil cylinder 10
Rodless cavity A1 fuel feeding the first fuel supply path and the rodless cavity A2 fuel feeding for the second oil cylinder 20 the second fuel supply path, and release
Put the oil in the rod chamber B2 of the second oil cylinder 20 of the first oil return path and release of the oil in the rod chamber B1 of the first oil cylinder 10
Second oil return path.
Furthermore control unit can be controlled and be supplied to three position four-way directional control valve when impeller locks hydraulic system unlock impeller
Electricity is connected to the P mouth of three position four-way directional control valve with B mouthfuls, and T mouthfuls are connected to (spool b is inclined) with A mouthfuls, to be formed as the first oil cylinder 10
Rod chamber B1 fuel feeding third fuel supply path and the rod chamber B2 fuel feeding for the second oil cylinder 20 the 4th fuel supply path, and release
Put the oil in the rodless cavity A2 of the second oil cylinder 20 of third oil return path and release of the oil in the rodless cavity A1 of the first oil cylinder 10
4th oil return path.
Here, the first fuel supply path successively passes through three position four-way directional control valve, the first sequence valve 31, pressure reducing valve 32 and the first oil
The rodless cavity A1 (40 → 31 → 32 → A1) of cylinder 10, the second fuel supply path successively pass through three position four-way directional control valve and the second oil cylinder 20
Rodless cavity A2 (40 → A2), third fuel supply path successively passes through the rod chamber B1 of three position four-way directional control valve and the first oil cylinder 10
(40 → B1), the 4th fuel supply path successively pass through the rod chamber B2 (40 → B2) of three position four-way directional control valve and the second oil cylinder 20.
In addition, the first oil return path successively pass through the first oil cylinder 10 rod chamber B1 and three position four-way directional control valve (B1 →
40), the rod chamber B2 and three position four-way directional control valve (B2 → 40) of the second oil cylinder 20, third oil return are successively passed through in the second oil return path
The rodless cavity A1 of the first oil cylinder 10, the first check valve 50 and three position four-way directional control valve (A1 → 50 → 40) are successively passed through in path, the
The rodless cavity A2 and three position four-way directional control valve (A2 → 40) of the second oil cylinder 20 are successively passed through in four oil return paths.
Fig. 2 is the schematic block diagram of the impeller locking hydraulic system of second embodiment according to the present invention.
For ease of description, the description of component identical with the component of Fig. 1 in Fig. 2 will be omitted.
As shown in Fig. 2, the second sequence valve 80 can be installed on the fuel supply path of the rod chamber B2 of second oil cylinder 20, second
The rod chamber B1's for oil return path and the first oil cylinder 10 of the rod chamber B2 of oil cylinder 20 is single for being equipped with second on oil return path
To valve 70.
Specifically, control unit can be controlled when impeller locks hydraulic system locking impeller to three position four-way directional control valve
Power supply, is connected to the P mouth of three position four-way directional control valve with A mouthfuls, T mouthfuls are connected to B mouthfuls, to be formed as the rodless cavity of the first oil cylinder 10
Second fuel supply path of the first fuel supply path of A1 fuel feeding and the rodless cavity A2 fuel feeding for the second oil cylinder 20, and the first oil of release
5th oil return of the oil in the rod chamber B2 of the second oil cylinder 20 of the first oil return path and release of the oil in the rod chamber B1 of cylinder 10
Path.
In addition, control unit can be controlled and be supplied to three position four-way directional control valve when impeller locks hydraulic system unlock impeller
Electricity is connected to the P mouth of three position four-way directional control valve with B mouthfuls, and T mouthfuls are connected to A mouthfuls, to be formed as the rod chamber B1 of the first oil cylinder 10
5th fuel supply path of the third fuel supply path of fuel feeding and the rod chamber B2 fuel feeding for the second oil cylinder 20, and the first oil cylinder of release
4th oil return line of the oil in the rodless cavity A2 of the second oil cylinder 20 of third oil return path and release of the oil in 10 rodless cavity A1
Diameter.
Here, the first fuel supply path successively passes through three position four-way directional control valve, the first sequence valve 31, pressure reducing valve 32 and the first oil
The rodless cavity A1 (40 → 31 → 32 → A1) of cylinder 10, the second fuel supply path successively pass through three position four-way directional control valve and the second oil cylinder 20
Rodless cavity A2 (40 → A2), third fuel supply path successively passes through the rod chamber B1 of three position four-way directional control valve and the first oil cylinder 10
(40 → B1), the 5th fuel supply path successively pass through the rod chamber of three position four-way directional control valve, the second sequence valve 80 and the second oil cylinder 20
B2(40→80→B2)。
In addition, the first oil return path successively pass through the first oil cylinder 10 rod chamber B1 and three position four-way directional control valve (B1 →
40), rod chamber B2, second one-way valve 70 and the three position four-way directional control valve (B2 of the second oil cylinder 20 are successively passed through in the 5th oil return path
→ 70 → 40), the rodless cavity A1 of the first oil cylinder 10, the first check valve 50 and 3-position 4-way commutation are successively passed through in third oil return path
Valve (A1 → 50 → 40), the 4th oil return path successively pass through the second oil cylinder 20 rodless cavity A2 and three position four-way directional control valve (A2 →
40)。
Fig. 3 is the schematic block diagram of the impeller locking hydraulic system of third embodiment according to the present invention.
For ease of description, component identical with the component of Fig. 1 and portion identical with the component of Fig. 2 in Fig. 3 will be omitted
Part.
In the third embodiment of the present invention, hydraulic power source 1 export hydraulic oil can by the first solenoid valve 3 again with commutation
The input terminal of valve cell 40 is connected to, and the output end that oil pressure adjusts unit 30 can be connected to another three position four-way directional control valve 41.Three
The output end that the P mouth of position four-way solenoid valve 41 can adjust unit 30 with oil pressure be connected to, and the T mouth of three position four-way electromagnetic valve 41 can be with
It is connected to oil-collecting unit 2, the A mouth of three position four-way electromagnetic valve 41 can be connected to the rodless cavity A1 of the first oil cylinder 10,3-position 4-way
The B mouth of solenoid valve 41 can be connected to the rod chamber B1 of the first oil cylinder 10.
Furthermore it can also be connected by second solenoid valve 4 between hydraulic power source 1 and the output end of valve unit 40.
During the locking and unlocking of the impeller of third embodiment of the present invention locking hydraulic system, the confession of the second oil cylinder
Circuit and first embodiment and second embodiment it is similar for circuit, which is not described herein again, the fuel feeding of the first oil cylinder
Mode needs to additionally go through three position four-way electromagnetic valve 41, and during oil return, and hydraulic oil is from rodless cavity A1 or rod chamber B1
It can be directly connected to oil-collecting unit 2 by the T mouth of three position four-way electromagnetic valve 41, without using valve unit 40.
Those skilled in the art knows that the component in any one embodiment of the invention can be used in other embodiments
In, as long as can guarantee that hydraulic system works normally.In addition, the impeller of embodiment according to the present invention locks hydraulic system
It can be adapted for realizing the case where impeller locks using three or three or more oil cylinders.
The locking pin that the impeller locking hydraulic system of embodiment according to the present invention can make the resistance being subject to small first retracts,
Resistance to make the locking pin not retracted be subject to reduces, the retraction of the locking pin retracted after being thus convenient for, to prevent from locking
Pin card is dead.
Embodiment according to the present invention impeller locking hydraulic system can reduce operating process, reduce system complexity,
Improve system reliability etc..
The impeller of embodiment according to the present invention locks hydraulic system, simple structure, at low cost and be wind power generating set
Maintenance bring great convenience.
The impeller locking hydraulic system of embodiment according to the present invention is that the maintenance of wind power generating set is brought greatly just
Benefit.
The foregoing is merely the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The change or replacement that those familiar with the art is readily apparent that in the technical scope disclosed by the present invention, should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of impeller of wind power generating set locks hydraulic system characterized by comprising
First oil cylinder (10), first oil cylinder (10) include rod chamber (B1) and rodless cavity (A1)；
Second oil cylinder (20), second oil cylinder (20) include rod chamber (B2) and rodless cavity (A2)；
Oil pressure adjusts unit (30), and oil pressure adjusting unit (30) is arranged in the rodless cavity (A1) of first oil cylinder (10)
On fuel supply path, the oil pressure adjusts unit (30) one-way conduction on fuel feeding direction；
Wherein, the oil circuit that connect of entrance of unit (30) is adjusted with the oil pressure equipped with branch point, the branch point with it is described
The fuel supply path of the rodless cavity (A2) of second oil cylinder (20) connects.
2. the impeller of wind power generating set according to claim 1 locks hydraulic system, which is characterized in that further include commutation
Valve cell (40), the valve unit (40) is connected to hydraulic power source (1) and the oil pressure adjusts the entrance of unit (30)
Between, wherein the rod chamber (B1) of first oil cylinder (10) and the rod chamber (B2) of second oil cylinder (20) are changed with described
It is connected to valve cell (40), to be formed from the rod chamber (B1) of the first oil cylinder (10) to oil-collecting unit (2) and from the second oil cylinder
(20) the oil return path of rod chamber (B2) the extremely oil-collecting unit (2).
3. the impeller of wind power generating set according to claim 2 locks hydraulic system, which is characterized in that the oil pressure tune
Saving unit (30) includes the first sequence valve (31) and pressure reducing valve (32), the entrance and valve unit of first sequence valve (31)
(40) output end connection, the outlet of first sequence valve (31) are connected to the entrance of the pressure reducing valve (32), the decompression
The outlet of valve (32) is connected to the rodless cavity (A1) of first oil cylinder (10).
4. the impeller of wind power generating set according to claim 3 locks hydraulic system, which is characterized in that the output end
The first delivery outlet be directly connected to the rodless cavity (A2) of second oil cylinder (20), the second delivery outlet of the output end and institute
The rod chamber (B1) for stating the first oil cylinder (10) is directly connected to, and second delivery outlet and second oil cylinder (20) has bar
Chamber (B2) is directly connected to.
5. the impeller of wind power generating set according to claim 3 locks hydraulic system, which is characterized in that the reversal valve
Unit (40) is three position four-way directional control valve, and the P mouth of the three position four-way directional control valve and T mouthfuls are located at input terminal, the 3-position 4-way
The A mouth of reversal valve is located at the output end with B mouthfuls.
6. the impeller of wind power generating set according to claim 5 locks hydraulic system, which is characterized in that first oil
The rodless cavity (A1) of cylinder (10) for being equipped on oil return path first pressure relay (61), and second oil cylinder (20)
Rod chamber (B2) for being equipped with second pressure relay (62) on oil return path.
7. the impeller of wind power generating set according to claim 6 locks hydraulic system, which is characterized in that first oil
The rodless cavity (A1) of cylinder (10) for the rodless cavity (A2) of oil return path and second oil cylinder (20) between oil return path
First check valve (50) are installed.
8. the impeller of wind power generating set according to claim 7 locks hydraulic system, which is characterized in that second oil
It is equipped with the second sequence valve (80) on the fuel supply path of the rod chamber (B2) of cylinder (20), the rod chamber of second oil cylinder (20)
(B2) the rod chamber (B1) for oil return path and first oil cylinder (10) for being equipped with second one-way valve on oil return path
(70)。
9. the impeller of wind power generating set according to claim 7 locks hydraulic system, which is characterized in that further include control
The control unit of the power supply of the three position four-way directional control valve, described control unit are configured as:
When impeller locking hydraulic system locking impeller, controls and power to the three position four-way directional control valve, make described three
The P mouth of four-way reversing valve is connected to A mouthfuls, and T mouthfuls are connected to B mouthfuls, to be formed as rodless cavity (A1) fuel feeding of the first oil cylinder (10)
The first fuel supply path and for the second oil cylinder (20) rodless cavity (A2) fuel feeding the second fuel supply path, and release the first oil cylinder
(10) the of the first oil return path of the oil in rod chamber (B1) and the oil in the rod chamber (B2) of release the second oil cylinder (20)
Two oil return paths；
When impeller locking hydraulic system unlock impeller, controls and power to the three position four-way directional control valve, make described three
The P mouth of four-way reversing valve is connected to B mouthfuls, and T mouthfuls are connected to A mouthfuls, to be formed as rod chamber (B1) fuel feeding of the first oil cylinder (10)
Third fuel supply path and for the second oil cylinder (20) rod chamber (B2) fuel feeding the 4th fuel supply path, and release the first oil cylinder
(10) the of the third oil return path of the oil in rodless cavity (A1) and the oil in the rodless cavity (A2) of release the second oil cylinder (20)
Four oil return paths；
Wherein, first fuel supply path successively passes through the three position four-way directional control valve, first sequence valve (31), described subtracts
The rodless cavity (A1) of pressure valve (32) and first oil cylinder (10), second fuel supply path are successively changed by the 3-position 4-way
To the rodless cavity (A2) of valve and second oil cylinder (20), the third fuel supply path successively passes through the three position four-way directional control valve
With the rod chamber (B1) of first oil cylinder (10), the 4th fuel supply path successively passes through the three position four-way directional control valve and institute
The rod chamber (B2) of the second oil cylinder (20) is stated,
The rod chamber (B1) and the three position four-way directional control valve of first oil cylinder (10) are successively passed through in first oil return path,
The rod chamber (B2) and the three position four-way directional control valve of second oil cylinder (20) are successively passed through in second oil return path, described
The rodless cavity (A1) of first oil cylinder (10), first check valve (50) and three described are successively passed through in third oil return path
The rodless cavity (A2) and the 3-position 4-way of second oil cylinder (20) are successively passed through in four-way reversing valve, the 4th oil return path
Reversal valve.
10. the impeller of wind power generating set according to claim 8 locks hydraulic system, which is characterized in that further include control
The control unit of the power supply of the three position four-way directional control valve is made, described control unit is configured as:
When impeller locking hydraulic system locking impeller, controls and power to the three position four-way directional control valve, make described three
The P mouth of four-way reversing valve is connected to A mouthfuls, and T mouthfuls are connected to B mouthfuls, to be formed as rodless cavity (A1) fuel feeding of the first oil cylinder (10)
The first fuel supply path and for the second oil cylinder (20) rodless cavity (A2) fuel feeding the second fuel supply path, and release the first oil cylinder
(10) the of the first oil return path of the oil in rod chamber (B1) and the oil in the rod chamber (B2) of release the second oil cylinder (20)
Five oil return paths；
When impeller locking hydraulic system unlock impeller, controls and power to the three position four-way directional control valve, make described three
The P mouth of four-way reversing valve is connected to B mouthfuls, and T mouthfuls are connected to A mouthfuls, to be formed as rod chamber (B1) fuel feeding of the first oil cylinder (10)
Third fuel supply path and for the second oil cylinder (20) rod chamber (B2) fuel feeding the 5th fuel supply path, and release the first oil cylinder
(10) the of the third oil return path of the oil in rodless cavity (A1) and the oil in the rodless cavity (A2) of release the second oil cylinder (20)
Four oil return paths；
Wherein, first fuel supply path successively passes through the three position four-way directional control valve, first sequence valve (31), described subtracts
The rodless cavity (A1) of pressure valve (32) and first oil cylinder (10), second fuel supply path successively pass through three position four-way directional control valve
With the rodless cavity (A2) of second oil cylinder, the third fuel supply path successively passes through three position four-way directional control valve and first oil
The rod chamber (B1) of cylinder (10), the 5th fuel supply path successively pass through the three position four-way directional control valve, second sequence valve
(80) and the rod chamber (B2) of second oil cylinder (20),
The rod chamber (B1) and the three position four-way directional control valve of first oil cylinder (10) are successively passed through in first oil return path,
The rod chamber (B2) of second oil cylinder (20), the second one-way valve (70) and described are successively passed through in the 5th oil return path
The rodless cavity (A1) of first oil cylinder (10), described first are successively passed through in three position four-way directional control valve, third oil return path
Check valve (50) and the three position four-way directional control valve, the 4th oil return path successively pass through second oil cylinder (20) without bar
Chamber (A2) and the three position four-way directional control valve.
11. a kind of wind power generating set, which is characterized in that locked including impeller according to claim 1 to 10
Hydraulic system.
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| CN201811522590.9A CN109595129A (en) | 2018-12-13 | 2018-12-13 | Impeller locking hydraulic system and wind generating set |
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| CN201811522590.9A CN109595129A (en) | 2018-12-13 | 2018-12-13 | Impeller locking hydraulic system and wind generating set |
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| CN109595129A true CN109595129A (en) | 2019-04-09 |
Family
ID=65961936
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| CN201811522590.9A Pending CN109595129A (en) | 2018-12-13 | 2018-12-13 | Impeller locking hydraulic system and wind generating set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762072A (en) * | 2019-11-05 | 2020-02-07 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for realizing sequential action of engineering vehicle mechanism and engineering vehicle |
| CN114321093A (en) * | 2020-09-29 | 2022-04-12 | 北京金风科创风电设备有限公司 | Multi-pin locking hydraulic control system and wind generating set |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1548536A1 (en) * | 1987-03-17 | 1990-03-07 | Московское станкостроительное производственное объединение "Красный пролетарий" | Valve for controlling action sequence of hydraulic cylinders |
| CN201458608U (en) * | 2009-05-26 | 2010-05-12 | 长治清华机械厂 | Hydraulic cylinder of leg automatic-turning device |
| WO2011060824A1 (en) * | 2009-11-19 | 2011-05-26 | Caterpillar Commercial S.A.R.L. | Apparatus for a variable gauge undercarriage |
| CN102146893A (en) * | 2011-02-23 | 2011-08-10 | 北车风电有限公司 | Method for locking spindle lock of wind power generator set |
| CN202343616U (en) * | 2011-12-14 | 2012-07-25 | 中联重科股份有限公司 | Moulding equipment for tube end of hard tube and hydraulic control system thereof |
| WO2013042279A1 (en) * | 2011-09-22 | 2013-03-28 | 三菱重工業株式会社 | Renewable energy-type electric power generation device and rotor affixation method for same |
| CN103307050A (en) * | 2013-06-25 | 2013-09-18 | 中联重科股份有限公司 | Multistage landing leg hydraulic control system and control method of multistage landing leg hydraulic control system |
| WO2014097433A1 (en) * | 2012-12-19 | 2014-06-26 | 三菱重工業株式会社 | Wind-powered electricity generation device and method for locking rotation of rotor head of same |
| CN204725189U (en) * | 2015-06-10 | 2015-10-28 | 吉林省通用机械有限责任公司 | A kind of holding hydraulic pressure system for knuckle Special Fixture for Machining |
| CN105545846A (en) * | 2016-02-22 | 2016-05-04 | 北京金风科创风电设备有限公司 | Three-pin locking hydraulic system for draught fan impeller |
| CN105626395A (en) * | 2016-02-26 | 2016-06-01 | 大连华锐重工集团股份有限公司 | Combined wind power wind wheel lock disc |
| CN105781889A (en) * | 2016-03-09 | 2016-07-20 | 太原重工股份有限公司 | Wind power unit and wind wheel locking device thereof |
-
2018
- 2018-12-13 CN CN201811522590.9A patent/CN109595129A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1548536A1 (en) * | 1987-03-17 | 1990-03-07 | Московское станкостроительное производственное объединение "Красный пролетарий" | Valve for controlling action sequence of hydraulic cylinders |
| CN201458608U (en) * | 2009-05-26 | 2010-05-12 | 长治清华机械厂 | Hydraulic cylinder of leg automatic-turning device |
| WO2011060824A1 (en) * | 2009-11-19 | 2011-05-26 | Caterpillar Commercial S.A.R.L. | Apparatus for a variable gauge undercarriage |
| CN102146893A (en) * | 2011-02-23 | 2011-08-10 | 北车风电有限公司 | Method for locking spindle lock of wind power generator set |
| WO2013042279A1 (en) * | 2011-09-22 | 2013-03-28 | 三菱重工業株式会社 | Renewable energy-type electric power generation device and rotor affixation method for same |
| CN202343616U (en) * | 2011-12-14 | 2012-07-25 | 中联重科股份有限公司 | Moulding equipment for tube end of hard tube and hydraulic control system thereof |
| WO2014097433A1 (en) * | 2012-12-19 | 2014-06-26 | 三菱重工業株式会社 | Wind-powered electricity generation device and method for locking rotation of rotor head of same |
| CN103307050A (en) * | 2013-06-25 | 2013-09-18 | 中联重科股份有限公司 | Multistage landing leg hydraulic control system and control method of multistage landing leg hydraulic control system |
| CN204725189U (en) * | 2015-06-10 | 2015-10-28 | 吉林省通用机械有限责任公司 | A kind of holding hydraulic pressure system for knuckle Special Fixture for Machining |
| CN105545846A (en) * | 2016-02-22 | 2016-05-04 | 北京金风科创风电设备有限公司 | Three-pin locking hydraulic system for draught fan impeller |
| CN105626395A (en) * | 2016-02-26 | 2016-06-01 | 大连华锐重工集团股份有限公司 | Combined wind power wind wheel lock disc |
| CN105781889A (en) * | 2016-03-09 | 2016-07-20 | 太原重工股份有限公司 | Wind power unit and wind wheel locking device thereof |
Non-Patent Citations (2)
| Title |
|---|
| 于炜东, 李泽民, 杜书旺: "风力发电机组风轮锁定装置 及典型方法解析", 《风能产业》, no. 2014, 1 February 2014 (2014-02-01), pages 52 - 54 * |
| 宋冬然，从龙慧，张博: "大型风电机组的叶轮锁定自动控制策略", 《风能》, no. 2012, 6 November 2012 (2012-11-06), pages 82 - 86 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762072A (en) * | 2019-11-05 | 2020-02-07 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for realizing sequential action of engineering vehicle mechanism and engineering vehicle |
| CN110762072B (en) * | 2019-11-05 | 2022-02-15 | 徐州徐工矿业机械有限公司 | Hydraulic system and method for realizing sequential action of engineering vehicle mechanism and engineering vehicle |
| CN114321093A (en) * | 2020-09-29 | 2022-04-12 | 北京金风科创风电设备有限公司 | Multi-pin locking hydraulic control system and wind generating set |
| CN114321093B (en) * | 2020-09-29 | 2024-02-23 | 北京金风科创风电设备有限公司 | Multi-pin locking hydraulic control system and wind generating set |
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