CN211259236U - Hydraulic wind wheel lock of wind generating set - Google Patents
Hydraulic wind wheel lock of wind generating set Download PDFInfo
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- CN211259236U CN211259236U CN201921962324.8U CN201921962324U CN211259236U CN 211259236 U CN211259236 U CN 211259236U CN 201921962324 U CN201921962324 U CN 201921962324U CN 211259236 U CN211259236 U CN 211259236U
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- locking pin
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- piston rod
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a wind generating set hydraulic pressure wind wheel lock, including fitting pin, switching cover, hydraulic cylinder, positioning bolt, mounting bolt pair, holding screw, toper cover, cabin chassis and wind wheel positioning disk, the fitting pin is placed in the pinhole of seting up at cabin chassis middle part to the bottom of fitting pin is installed in the locating hole that the wind wheel positioning disk was seted up through the toper cover, the vice installation of mounting bolt is passed through with the top of switching cover in hydraulic cylinder's bottom, the vice installation of mounting bolt is passed through at the bottom of switching cover and the top of cabin chassis, the pole hole that hydraulic cylinder's piston rod and fitting pin top were seted up is through holding screw installation, the top axle outside that positioning bolt pinned the fitting pin is passed through in the outside of switching cover bottom. The utility model discloses, possess locking simple structure, the effectual advantage of locking, the not enough, round pin/the round pin difficulty that moves back of fitting pin intensity that proposes in the solution background art, the problem of operating space restriction.
Description
Technical Field
The utility model relates to a wind generating set technical field specifically is a wind generating set hydraulic pressure wind wheel lock.
Background
The wind wheel lock of the wind generating set is used for reliably locking the hub, preventing the hub from rotating and ensuring the safety of maintenance personnel. A locking pin is adopted in a wind turbine generator set of a certain type at present and is installed under a main shaft, a screw rod is driven to rotate through a manual rotating handle, and rotary motion of the screw rod is converted into linear motion of the locking pin. A small gap exists between the locking pin and the main frame, and grease is filled in the gap for lubrication.
The wind wheel lock of the unit mainly has the following problems at present:
1) insufficient strength of the locking pin
The current material adopted by the wind wheel locking pin is not high in hardness and is slender. In the case of high wind speeds, the locking pin is bent.
2) Difficulty in advancing/retreating pins
The wind wheel lock drives the lead screw through manpower, has difficulty in pin entering/pin withdrawing under the condition of high grease viscosity or excessive grease impurities, and particularly has obvious performance under the condition of cold weather in winter. When the wind wheel lock encounters severe weather, the wind wheel of the wind generating set bears large wind load, the torque transmission capacity of the threads is limited, and safe and timely quitting of the wind wheel lock cannot be guaranteed.
3) Operating space limitation
The wind wheel lock is located the main shaft below, and operating space is limited, and personnel can't use full power when rotating operating handle. Meanwhile, the problem of oil leakage of a bearing below the main shaft is serious, and the leaked oil makes the operation process more inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wind generating set hydraulic pressure wind wheel lock possesses the advantage that locking structure is simple, locking is effectual, solves the problem that proposes in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wind generating set hydraulic pressure wind wheel lock, includes fitting pin, switching cover, hydraulic cylinder, positioning bolt, mounting bolt pair, holding screw, toper cover, cabin chassis and wind wheel positioning disk, the fitting pin is placed in the pinhole of seting up at cabin chassis middle part to the bottom of fitting pin is installed in the locating hole that the wind wheel positioning disk was seted up through the toper cover, the mounting bolt pair installation is passed through with the top of switching cover in hydraulic cylinder's bottom, the mounting bolt pair installation is passed through with the top of cabin chassis in the bottom of switching cover, the pole hole that hydraulic cylinder's piston rod and fitting pin top were seted up is through holding screw installation, the top axle outside of fitting pin is pinned through positioning bolt in the outside of switching cover bottom.
Preferably, the hydraulic oil cylinder comprises a cylinder body, an end cover, a ferrule type end straight-through pipe joint and a piston rod, the end cover is installed at the top of the cylinder body through an installation bolt pair, and the ferrule type end straight-through pipe joint is installed in the middle of the top of the end cover.
Preferably, the outer wall of the plate of the piston rod is slidably connected with the inner wall of the cylinder body, and the bottom end of the rod of the piston rod penetrates through a rod hole formed in the bottom of the cylinder body and then extends to the outside.
Preferably, a support ring and a sealing element are embedded between the outer wall of the plate of the piston rod and the inner wall of the cylinder body.
Preferably, a support ring, a sealing element and an O-shaped ring are embedded between the outer wall of the rod of the piston rod and the inner wall of the rod hole of the cylinder body.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1) the locking pin structure is modified, the original locking pin mounting end cover is detached and connected with the hydraulic oil cylinder, the coaxiality of the locking pin and the pin hole is better after a direct pushing mode is adopted, and the pushing resistance is reduced.
2) The locking pin material is changed to be 42CrMo, and meanwhile, surface treatment is carried out, so that the strength of the locking pin is improved.
3) The taper sleeve is arranged at the pin hole position of the positioning disc of the original wind generating set and is used for facilitating the hole alignment of the actual field operation, and meanwhile, the contact area of the locking pin can be increased and the contact stress can be reduced; eliminate the fitting pin and positioning disk hole clearance, reduce the wind wheel and rock.
4) The driving mode of locking pin entering/pin withdrawing is changed, and the original screw rod rotation driving mode is changed into hydraulic driving. The hydraulic lock pin adapter flange is fixed on the rack through a high-strength bolt, and the lock pin can freely move in a telescopic mode in the mounting hole. When the locking puck is to be locked, the locking pin is pushed into the locking puck hole under the influence of hydraulic pressure.
5) The bidirectional manual pump or the electric pump is used as a power source to control the hydraulic cylinder, so that the working strength of operators can be reduced, and particularly, the problem of operation of quitting the locking pin in windy weather is solved.
6) The electric pump is provided with a special pressure protection element in operation, so that the problem that the positioning disc is damaged by misoperation can be prevented.
Drawings
Fig. 1 is a schematic structural diagram of a cross-sectional view of a front view of the hydraulic lock of the present invention;
FIG. 2 is a schematic structural diagram of a cross-sectional view of a hydraulic cylinder according to the present invention;
FIG. 3 is a schematic view of an enlarged view of a portion a of FIG. 2 according to the present invention;
FIG. 4 is a hydraulic schematic diagram of the present invention;
fig. 5 is a schematic diagram of the hand pump of the present invention.
In the figure: 1-locking pin, 3-adapter sleeve, 4-hydraulic oil cylinder, 5-positioning bolt, 6-mounting bolt pair, 7-set screw, 8-taper sleeve, 9-cabin underframe, 10-wind wheel positioning disc, 11-cylinder body, 12-end cover, 13-cutting sleeve type end straight-through pipe joint, 14-piston rod, 15-supporting ring, 16-sealing element, 17-O-shaped ring, 18-oil pointer, 19-pressure gauge, 20-three-position four-way electromagnetic valve, 21-hydraulic lock, 22-overflow valve, 23-one-way valve, 24-manual pump, 25-motor, 26-gear pump, 27-filter, 28-junction box, 29-oil tank and 30-three-position four-way manual valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a wind generating set hydraulic pressure wind wheel lock, including fitting pin 1, switching cover 3, hydraulic cylinder 4, positioning bolt 5, the vice 6 of mounting bolt, holding screw 7, toper cover 8, cabin chassis 9 and wind wheel positioning disk 10, fitting pin 1 places in the pinhole of seting up in cabin chassis 9 middle part, and fitting pin 1's bottom is installed in the locating hole that wind wheel positioning disk 10 was seted up through toper cover 8, hydraulic cylinder 4's bottom and the top of switching cover 3 are through the vice 6 installations of mounting bolt, the bottom of switching cover 3 and the top of cabin chassis 9 are through the vice 6 installations of mounting bolt, hydraulic cylinder 4's piston rod 14 and the pole hole of seting up at 1 top of fitting pin pass through holding screw 7 and install, the top axle outside of fitting pin 1 is pinned through positioning bolt 5 in the outside of switching cover 3 bottom. A hydraulic pump is used as a power source to control a hydraulic cylinder, and pin feeding/pin withdrawing of the locking pin is realized through reversing operation.
Specifically, the hydraulic cylinder 4 comprises a cylinder body 11, an end cover 12, a ferrule type end straight-through pipe joint 13 and a piston rod 14, wherein the end cover 12 is installed at the top of the cylinder body 11 through an installation bolt pair 6, the ferrule type end straight-through pipe joint 13 is installed at the middle part of the top of the end cover 12, the outer wall of a plate of the piston rod 14 is in sliding connection with the inner wall of a cylinder of the cylinder body 11, the bottom end of the rod of the piston rod 14 penetrates through a rod hole formed in the bottom of the cylinder body 11 and then extends to the outside, a supporting ring 15 and a sealing element 16 are embedded between the outer wall of the plate of the piston rod 14 and the inner wall of the cylinder body 11, and the.
The design of the wind wheel lock hydraulic oil cylinder is carried out according to the design standard of the hydraulic oil cylinder and a mechanical design manual, and the piston rod 14 use a coaxial sealing piece 16 and a supporting ring 15 standard piece. The hydraulic pipeline is connected with the ferrule type end straight-through pipe joint 12, and the hydraulic oil controls the push-out and the retraction of the piston rod 4 through the reversing valve. The maximum working pressure of the hydraulic cylinder is 200Bar, the stroke is 60mm, and the operation requirement of locking the wind wheel by the wind wheel lock can be met.
As shown in fig. 4, the hydraulic wind wheel lock uses a manual pump and electric pump integrated hydraulic station to control the hydraulic oil cylinder 4, the manual pump 24 and the gear pump 26 can be used independently respectively to provide pressure for the system, and the loop is provided with a check valve 23 respectively to prevent the generation of oil return. The highest working pressure of the system is controlled by the overflow valve 22-1, and the working pressure is set to be 200 Bar. The power of the electric pump is 0.55kw, the displacement is 1.1ml/r, the rated rotating speed of the motor is 1440r/m, when the electric pump is used for operation, the locking pin 1 can be completely pushed out in 30s, and the retraction can be completed in 25 s. The displacement of the manual pump is selected to be 16 ml/time, the locking pin 1 needs to be pressed 46 times when pushed out, and the locking pin 1 needs to be pressed 37 times when retreated. The maximum push-out thrust of the hydraulic wind wheel lock is 98KN, and the maximum retraction thrust of the hydraulic wind wheel lock is 196 KN. The specific operation steps are as follows:
1. in a daily state, the electromagnetic valve 12 is in a normally closed state at the middle position, and the wind wheel lock cannot work.
2. When the wind wheel needs to be locked by the locking pin 1, the left position DT1 of the electromagnetic valve is electrified, hydraulic oil enters the hydraulic oil cylinder 4 through the C1 port and is pushed out of the locking pin 1, the hydraulic oil on the right side of the hydraulic oil cylinder 4 enters the oil tank 29 through the C2 port and the return oil of the hydraulic lock 21, and the valve body on the right side of the hydraulic lock 21 is opened. The oil inlet side loop is provided with an overflow valve 22-2, the pressure of the overflow valve is set to be 80Bar, the overflow valve is used for controlling the system pressure when the locking pin 1 is pushed out, and the positioning disc is prevented from being damaged due to overlarge pressure of the electric pump when the locking pin 1 is not aligned with the pin hole. After the locking pin 1 is pushed out in place, the hydraulic system stops pressing, meanwhile, hydraulic oil in the hydraulic oil cylinder 4 on the left side is subjected to pressure maintaining through the hydraulic lock 21, and the situation that the locking pin 1 is withdrawn due to long-term vibration of the wind wheel is prevented.
3. When the locking pin 1 needs to retract, the right position DT2 of the electromagnetic valve is electrified, hydraulic oil enters the hydraulic oil cylinder 4 through the port C2 and retracts into the locking pin 1, hydraulic oil on the left side of the hydraulic oil cylinder 4 enters the oil tank 29 through the port C1 and oil returned by the hydraulic lock 21, and at the moment, the valve body on the left side of the hydraulic lock 21 is opened. When the air wheel lock is returned, the required thrust is large under the action of wind load, so that the oil inlet return pressure is set to be 200 bar. After the locking pin 1 returns to the original position, the hydraulic system stops pressurizing, meanwhile, the hydraulic oil in the hydraulic oil cylinder 4 on the right side is subjected to pressure maintaining through the hydraulic lock 21, and the locking pin 1 is prevented from being pushed out by misoperation to influence the operation safety of the unit.
As shown in fig. 5, the hydraulic wind wheel lock uses a manual pump 24 to control the hydraulic cylinder 4 alone, taking into account the cost of the actual application and the field power supply issues. The highest working pressure of the system is controlled by the overflow valve 22, and the working pressure is set to be 200 Bar. The displacement of the manual pump is selected to be 16 ml/time, the locking pin 1 needs to be pressed 46 times when pushed out, and the locking pin 1 needs to be pressed 37 times when retreated. The maximum push-out thrust of the hydraulic wind wheel lock is 245KN, and the maximum retraction thrust of the hydraulic wind wheel lock is 196 KN. The specific operation steps are as follows:
1. in a daily state, the manual valve 8 is in a normally closed state at the intermediate position, and the wind wheel lock cannot work.
2. When the wind wheel needs to be locked by the locking pin 1, hydraulic oil enters the hydraulic oil cylinder 4 through the opening C1 to push out the locking pin 1 through the left-side passage of the manual valve, the hydraulic oil on the right side of the hydraulic oil cylinder 4 enters the oil tank 29 through the opening C2 and the return oil of the hydraulic lock 7, and at the moment, the right-side valve body of the hydraulic lock is opened. After the locking pin 1 is pushed out in place, the manual pump stops pressurizing, meanwhile, hydraulic oil in the hydraulic oil cylinder 4 on the left side is subjected to pressure maintaining through the hydraulic lock, and the situation that the locking pin 1 is withdrawn due to long-term vibration of the wind wheel is prevented.
3. When the locking pin 1 needs to retract, hydraulic oil enters the hydraulic oil cylinder 4 through the port C2 to retract the locking pin 1 through the right-side passage of the manual valve, hydraulic oil on the left side of the hydraulic oil cylinder 4 returns through the port C1 and the hydraulic lock 7 to enter the oil tank 29, and at the moment, the left-side valve body of the hydraulic lock is opened. After the locking pin 1 returns to the original position, the hydraulic system stops pressurizing, meanwhile, hydraulic oil in the hydraulic oil cylinder 4 on the right side is subjected to pressure maintaining through a hydraulic lock, and the locking pin 1 is prevented from being pushed out by misoperation to influence the operation safety of the unit.
The working principle is as follows: when the hydraulic wind wheel lock of the wind generating set is used, the locking pin 1 can be completely pushed out in 30s when an electric pump is adopted for operation; in consideration of the cost of practical application and the problem of a field power supply, the hydraulic wind wheel lock adopts the manual pump 24 to independently control the hydraulic oil cylinder 4, and the locking pin 1 can be completely pushed out through the manual valve.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a wind generating set hydraulic pressure wind wheel lock, includes fitting pin (1), switching cover (3), hydraulic cylinder (4), positioning bolt (5), mounting bolt is vice (6), holding screw (7), toper cover (8), cabin chassis (9) and wind wheel positioning disk (10), its characterized in that: the locking pin (1) is placed in a pin hole formed in the middle of a cabin bottom frame (9), the bottom of the locking pin (1) is installed in a positioning hole formed in a wind wheel positioning disc (10) through a conical sleeve (8), the bottom of the hydraulic oil cylinder (4) and the top of the adapter sleeve (3) are installed through a mounting bolt pair (6), the bottom of the adapter sleeve (3) and the top of the cabin bottom frame (9) are installed through the mounting bolt pair (6), a piston rod (14) of the hydraulic oil cylinder (4) and a rod hole formed in the top of the locking pin (1) are installed through a set screw (7), and the outer side of the bottom of the adapter sleeve (3) is locked outside a top end shaft of the locking pin (1) through the positioning bolt (5).
2. The hydraulic wind wheel lock of the wind generating set according to claim 1, characterized in that: the hydraulic oil cylinder (4) comprises a cylinder body (11), an end cover (12), a clamping sleeve type end through pipe joint (13) and a piston rod (14), wherein the end cover (12) is installed at the top of the cylinder body (11) through an installation bolt pair (6), and the clamping sleeve type end through pipe joint (13) is installed in the middle of the top of the end cover (12).
3. The hydraulic wind wheel lock of the wind generating set according to claim 2, characterized in that: the outer wall of the plate of the piston rod (14) is connected with the inner wall of the cylinder body (11) in a sliding mode, and the bottom end of the piston rod (14) penetrates through a rod hole formed in the bottom of the cylinder body (11) and then extends to the outside.
4. The hydraulic wind wheel lock of the wind generating set according to claim 2, characterized in that: and a supporting ring (15) and a sealing element (16) are embedded between the outer wall of the plate of the piston rod (14) and the inner wall of the cylinder body (11).
5. The hydraulic wind wheel lock of the wind generating set according to claim 2, characterized in that: and a supporting ring (15), a sealing piece (16) and an O-shaped ring (17) are embedded between the outer wall of the rod of the piston rod (14) and the inner wall of the rod hole of the cylinder body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921962324.8U CN211259236U (en) | 2019-11-12 | 2019-11-12 | Hydraulic wind wheel lock of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921962324.8U CN211259236U (en) | 2019-11-12 | 2019-11-12 | Hydraulic wind wheel lock of wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN211259236U true CN211259236U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921962324.8U Active CN211259236U (en) | 2019-11-12 | 2019-11-12 | Hydraulic wind wheel lock of wind generating set |
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| Country | Link |
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| CN (1) | CN211259236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309937A (en) * | 2021-07-28 | 2021-08-27 | 浙江索特重工科技有限公司 | High-temperature-resistant hydraulic lock with wedge-shaped chuck |
| 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 |
-
2019
- 2019-11-12 CN CN201921962324.8U patent/CN211259236U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113309937A (en) * | 2021-07-28 | 2021-08-27 | 浙江索特重工科技有限公司 | High-temperature-resistant hydraulic lock with wedge-shaped chuck |
| CN113309937B (en) * | 2021-07-28 | 2021-10-15 | 浙江索特重工科技有限公司 | High-temperature-resistant hydraulic lock with wedge-shaped chuck |
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