CN102072084A - Automatic safety control system for medium and small-sized wind-driven generators - Google Patents
Automatic safety control system for medium and small-sized wind-driven generators Download PDFInfo
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- CN102072084A CN102072084A CN2011100299132A CN201110029913A CN102072084A CN 102072084 A CN102072084 A CN 102072084A CN 2011100299132 A CN2011100299132 A CN 2011100299132A CN 201110029913 A CN201110029913 A CN 201110029913A CN 102072084 A CN102072084 A CN 102072084A
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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 invention relates to an automatic safety control system for medium and small-sized wind-driven generators, which comprises a synchronous mechanism (1), a pull rod (2), an adjusting spring (3), a brake (6), a brake steel wire rope (8), a blade installation assembly (4), a pitch control rod (5), a pitch operating mechanism (7), a force measurement winch (9) and a safety system controller (10), wherein the safety system controller (10) outputs an instruction to control the force measurement winch (9) to perform forward and reverse rotation so as to control a blade angle to rotate clockwise or counterclockwise through the brake steel wire rope (8), the pitch operating mechanism (7), the pitch control rod (5), the synchronous mechanism (1), the pull rod (2) and the blade installation assembly (4).
Description
Technical field
The invention belongs to wind-driven generator manufacturing technology field, be specifically related to a kind of middle-size and small-size wind-driven generator automatic safety control system.
Background technique
In the prior art; there is many hidden danger in the safety control of middle-size and small-size wind-driven generator; the following aspect of main embodiment: (1) can not realize the reliable shutdown under the strong wind operating mode; existing arrestment mechanism mostly is drum-type or the disk type braker that is installed on the wind-driven generator lower velocity shaft; because braking moment is limited; can not be implemented in the safety brake under the strong wind operating mode, only can be used as a kind of locking device of shutting down maintenance.(2) life-span weak point because braking moment is limited, is shut down under the strong wind operating mode and is caused brake shoe friction material serious wear, changes frequent.(3) reliability is low, owing to can not realize the reliable shutdown under the strong wind operating mode, causes the wind wheel hypervelocity again and again, the phenomenon of burn-down of electric motor.(4) automaticity is low, and existing braking system to be adopted manually, can't realize the automatic startup-shutdown control of wind-driven generator.
Summary of the invention
The present invention has overcome the deficiencies in the prior art; middle-size and small-size wind-driven generator automatic safety control system has been proposed; this system provide a kind of safe and reliable, automaticity is high can make the system that wind-driven generator can safe and reliable operation when wind speed 10-30m/s wide variation, this system can monitor unit runnability in real time, realize stoppage protection and start operation automatically.
Technological scheme of the present invention is: middle-size and small-size wind-driven generator automatic safety control system, be made up of three subsystems: feather manipulation and arrestment mechanism, braking state detect actuator, automatic detection and control system.
Feather of the present invention is handled with arrestment mechanism and is made up of the lazy-tongs that are installed in the wind wheel front end, the change oar guide rod that runs through motor shaft, gear mechanism, brake connecting rod, the break in the cabin, gear mechanism in the cabin rotates drive change oar guide rod traction feather lazy-tongs the blade angle is placed negative value, gear mechanism is after the feather operating mechanism puts in place, drive the brake arm rotating cam and start brake, and braking brake does not start in the process that becomes the oar manipulation.
Braking state of the present invention detects with actuator to be made up of electric capstan, electric capstan support, pulley, slide block, brake wire, brake spring, position transducer, brake wire one end links to each other with the gear arm of feather operating mechanism, the other end links to each other with electric winch by pulley, the slide block of pulley both sides is the compression brake spring when pulley moves, and initial and the braking place of putting in place are provided with position limit switch in braking.
Automatic detection and control system of the present invention is made up of controller, anemoscope, position limit switch signal, generator voltage sensor, net electric transducer.It is characterized in that controller testing environment wind velocity signal, generator voltage signal, net electrical signal, position limit switch signal etc., and start electric winch execution wind-driven generator shutdown and start action according to the input situation.
The present invention has following beneficial effect:
1, to can be implemented in wind speed can be that negative value makes the wind wheel deliberate speed loss lose acceleration power with the blade tip angular adjustment by the gear mechanism in the cabin when excessive in the setting of feather operating mechanism, and produce the reverse aerodynamical resistance distance of impelling wind wheel to stop.
2, the interlock of feather operating mechanism and brake structure is provided with and has realized in the too high elder generation of wind speed wind wheel stall braking then to remove the power of wind wheel, has reduced the wearing and tearing of brake friction material, improves the life-span of break.
3, braking force detect can control brake power with being provided with of actuator size avoid in the braking process the excessive brake wear that causes of braking force serious, the problem of electric winch overload improves the reliability of system.
4, automatic detection and control system the running state that can detect the wind-driven generator unit in real time is set, and can be too high at wind speed, carry out stoppage protection timely under the improper operating mode such as equipment failure, electric network fault; When the condition situation meets the demands, start wind-driven generator automatically, can realize automatic control, unattended function.
5, the power autonomous setting of automatic safety control system can improve the reliability of unit so that system does not rely on the startup shutdown that external condition is controlled wind-driven generator automatically.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is automatic safe control principle figure of the present invention.
Fig. 2 is in the safety brake working procedure of the present invention, the angle diagram when the blade pitch is adjusted.
Fig. 3 is in the safety brake working procedure of the present invention, the blade angle diagram during startup.
Fig. 4 is in the safety brake working procedure of the present invention, the blade angle diagram during operation.
Fig. 5 is in the safety brake working procedure of the present invention, the angle diagram during braking.
Among the figure, 1. lazy-tongs; 2. pull bar; 3. adjustment spring; 4. blade installation assembly; 5 pitches control guide rod; 6. break; 7. pitch-control mechanism; 8. brake wire; 9. dynamometry capstan winch; 10. safety system controller.
Embodiment
To shown in Figure 5, middle-size and small-size wind-driven generator safety control system comprises lazy-tongs 1, pull bar 2, adjustment spring 3, blade installation assembly 4, pitch control guide rod 5, break 6, pitch-control mechanism 7, brake wire 8, dynamometry capstan winch 9, safety system controller 10 as Fig. 1.
Wind-driven generator shutdown procedure: safety system controller 10 testing environment wind speed and system operational parameters; when wind-driven generator running environment and system's operation exception; send the wind-driven generator halt instruction; carry out the safety brake program; the motor of dynamometry capstan winch 9 rotates; pulling brake wire 8 moves downward; the gear support arm of brake wire 8 traction pitch-control mechanisms 7 moves in the direction of the clock; drive pitch control guide rod 5; pitch control guide rod 5 is rigidly connected with lazy-tongs 1; pull bar drive vane mounting unit assembly 4 is crossed by rotating counterclockwise by lazy-tongs 1 back Mobile Communication; the blade angle is adjusted into negative value, and wind wheel stall driving force is decreased to 0, becomes oar control guide rod 5 this moment and moves to application position; break 6 starts the generation braking moment, and wind-driven generator is shut down.Wind-driven generator restarts working procedure: safety system controller 10 testing environment wind speed and system condition parameter, meet the wind-driven generator starting condition and carry out following boot program, safety system controller 10 output start-up command, the counter-rotating of dynamometry capstan winch 9 motors, brake wire 8 is lax, break 6 braking moments disappear, reset at adjustment spring 3, driving synchro structure 1 reverse direction operation, lazy-tongs 1 drawing pull bar 2, blade installation assembly 4 clockwise rotates, and the blade tip angle returns to starting state.
Middle-size and small-size wind-driven generator safety control system of the present invention can be realized the protection of wind-driven generator strong wind, safe shutdown, the characteristics that the life-span is long, brake wear is little, and system monitors automatically simultaneously, and automation degree height can be realized unmanned on duty.
Claims (6)
1. middle-size and small-size wind-driven generator automatic safety control system, comprise lazy-tongs (1), pull bar (2), adjust spring (3), break (6) and brake wire (8), it is characterized in that: it also comprises blade installation assembly (4), pitch control guide rod (5), pitch-control mechanism (7), dynamometry capstan winch (9) and safety system controller (10), safety system controller (10) output order control dynamometry capstan winch (9) carry out clockwise and anticlockwise by brake wire (8), pitch-control mechanism (7), pitch controlling rod (5), lazy-tongs (1), pull bar (2), blade installation assembly (4) control blade angle is by clockwise or rotate counterclockwise.
2. middle-size and small-size wind-driven generator safety control system according to claim 1 is characterized in that: the blade installation assembly is equipped with blade on (4), when braking, the blade angle is controlled at negative angle.
3. middle-size and small-size wind-driven generator safety control system according to claim 2, it is characterized in that: pitch-control mechanism (7) and break (6) interlock, pitch-control mechanism (7) with the blade angle by being rotated counterclockwise to negative angle, break (6) is carried out braking maneuver, and the two has the action sequencing.
4. middle-size and small-size wind-driven generator safety control system according to claim 2, it is characterized in that: when wind-driven generator is opened again, safety system controller (10) sends start-up command, break (6) discharges, the angle of blade is adjusted under the effect of spring (3) again, resets by lazy-tongs (1), pull bar (2), blade installation assembly (4).
5. middle-size and small-size wind-driven generator safety control system according to claim 1; it is characterized in that: safety system controller (10) detects wind speed and system operational parameters; judge whether operational system work; and can be under unattended situation, start, the shutdown of control wind-driven generator.
6. middle-size and small-size wind-driven generator safety control system according to claim 2 is characterized in that: pitch control guide rod (5) is by having the motor shaft of hollow structure, and the control mechanism and the braking system of wind wheel place blade interrelated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100299132A CN102072084A (en) | 2011-01-25 | 2011-01-25 | Automatic safety control system for medium and small-sized wind-driven generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100299132A CN102072084A (en) | 2011-01-25 | 2011-01-25 | Automatic safety control system for medium and small-sized wind-driven generators |
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| Publication Number | Publication Date |
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| CN102072084A true CN102072084A (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100299132A Pending CN102072084A (en) | 2011-01-25 | 2011-01-25 | Automatic safety control system for medium and small-sized wind-driven generators |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545426A (en) * | 2018-06-04 | 2018-09-18 | 中国矿业大学 | A kind of downward belt conveyor distributed brake device and autocontrol method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031031A (en) * | 2000-07-17 | 2002-01-31 | Fuji Heavy Ind Ltd | Variable vane pitch mechanism of windmill |
| CN1664358A (en) * | 2004-03-02 | 2005-09-07 | 金东龙 | Wind driven power generating system |
| CN201265487Y (en) * | 2008-05-29 | 2009-07-01 | 青岛安华新能源开发有限公司 | Flying bar synchronous variable-pitch mechanism |
| CN201339544Y (en) * | 2008-12-25 | 2009-11-04 | 浙江华鹰风电设备有限公司 | Passive pitch-controlled wind-powered generator with shifting device |
| CN101852184A (en) * | 2010-06-04 | 2010-10-06 | 浙江华鹰风电设备有限公司 | Medium and small sized variable propeller pitch wind-driven generator |
-
2011
- 2011-01-25 CN CN2011100299132A patent/CN102072084A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031031A (en) * | 2000-07-17 | 2002-01-31 | Fuji Heavy Ind Ltd | Variable vane pitch mechanism of windmill |
| CN1664358A (en) * | 2004-03-02 | 2005-09-07 | 金东龙 | Wind driven power generating system |
| CN201265487Y (en) * | 2008-05-29 | 2009-07-01 | 青岛安华新能源开发有限公司 | Flying bar synchronous variable-pitch mechanism |
| CN201339544Y (en) * | 2008-12-25 | 2009-11-04 | 浙江华鹰风电设备有限公司 | Passive pitch-controlled wind-powered generator with shifting device |
| CN101852184A (en) * | 2010-06-04 | 2010-10-06 | 浙江华鹰风电设备有限公司 | Medium and small sized variable propeller pitch wind-driven generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545426A (en) * | 2018-06-04 | 2018-09-18 | 中国矿业大学 | A kind of downward belt conveyor distributed brake device and autocontrol method |
| CN108545426B (en) * | 2018-06-04 | 2024-01-16 | 中国矿业大学 | Distributed braking device of downward belt conveyor and automatic control method |
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Application publication date: 20110525 |