CN103452768A - Fan tower load shedding method based on separated engine room - Google Patents
Fan tower load shedding method based on separated engine room Download PDFInfo
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- CN103452768A CN103452768A CN2012101682812A CN201210168281A CN103452768A CN 103452768 A CN103452768 A CN 103452768A CN 2012101682812 A CN2012101682812 A CN 2012101682812A CN 201210168281 A CN201210168281 A CN 201210168281A CN 103452768 A CN103452768 A CN 103452768A
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- load shedding
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- pylon
- shedding method
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Abstract
A fan tower load shedding method based on a separated engine room is characterized in that by means of the design of two mass blocks of the separated engine room, the two mass blocks include a sliding mass block formed by a rotor, a hub, a transmission system and a generator and a fixed mass block formed by the engine room, the sliding mass block slides on the fixed mass block through a slide track, and the two portions are connected through an elastic damping device. By means of the method, when a wind turbine vibrates forwards and backwards because wind wheel thrust changes, relative movement of the sliding mass block is caused through stretching and shrinking of the elastic damping device, and an elastic damping system of the two mass blocks is formed. The purpose of reducing tower load and tower vibration is achieved by absorbing the tower vibration energy through a damping characteristic.
Description
Technical field
The invention belongs to wind power generation field, be specifically related to a kind of method that reduces blower fan pylon load, reduces tower oscillation.
Technical background
The wind power generating set of extensive use at present, in running, tends to cause tower oscillation due to the impact of self structure and external environment condition.Along with the increase of wind-powered electricity generation capacity of power unit, the height of pylon also constantly increases, and the pylon of Large-scale Wind Turbines has surpassed 100m; The increase of pylon height causes the alternation of pylon load and randomness to increase, thus the vibration of aggravation pylon.
Pylon is the important component part of wind power generating set, and it plays a supportive role to parts such as cabin, wind wheels.The vibration of pylon can increase the mechanical load of pylon and other mechanical assemblys, reduce mechanical strength, cause the fatigue damage of pylon and other mechanical assemblys and the minimizing in working life, affect stability and the reliability of unit operation, will impact unit safety when serious.
Wherein take the single order vibration of fore-and-aft direction and the single order of left and right directions vibrates as main, and its natural frequency is subject to the impact of the factors such as pylon height, tower wall thickness, pylon material, cabin and rotor weight.The method major part that reduces at present tower oscillation realizes by the various forms of load shedding devices of installing in pylon, one of them method is by pylon or cabin, damped system being installed, and position, speed, the acceleration of ACTIVE CONTROL mass block change the vibration frequency of unit associated components simultaneously.Also by changing engine room structure, do not reduce at present the method for pylon load.
Summary of the invention
For above problem, the invention provides a kind of blower fan pylon load shedding method based on the separated type cabin, can effectively reduce pylon load, reduce the vibration of pylon fore-and-aft direction.
A kind of blower fan pylon load shedding method based on the separated type cabin comprises:
The separated type cabin that design consists of two mass blockes, comprise the moving mass formed by rotor, wheel hub, transmission system, generator, with the fixed mass piece consisted of cabin, moving mass slides on the fixed mass piece by slide rail, and two-part connect by elastic device.
When pylon is subject to the active force of fore-and-aft direction and during vibration-generating, the inertial load of moving mass will cause stretching or the contraction of the elastic device between two mass blockes, cause moving mass by the relative movement of slide rail and fixed mass piece, form a damped system; The damping characteristic of damped system will be cut down the kinetic energy of tower oscillation, thereby reach the purpose that reduces pylon load, reduces tower oscillation.Wherein the elasticity coefficient of damped system and damping ratio can be regulated, and then reduce vibration natural frequency and the vibration amplitude of pylon.
The accompanying drawing explanation
Fig. 1 is the separated type engine room structure schematic diagram for reducing pylon load.
Fig. 2 is the slide rail partial schematic diagram.
Description of reference numerals: 1-wind wheeling rotor; The 2-wheel hub; The 3-moving mass; 4-fixed mass piece; The 5-slide rail; The 6-elastic device; The 7-pylon; The 8-lower velocity shaft; The 9-gear-box; The 10-high speed shaft; The 11-generator; 12-is subject to force direction, 13-sliding-rail sliding, 14-slide rail base.
Embodiment
Specific embodiment will be explained in detail the present invention.
Fig. 1 means the separated type engine room structure schematic diagram for reducing pylon load, has meaned a specific embodiment of the present invention.
Described separated type cabin consists of moving mass 3 and fixed mass piece 4, and moving mass 3 slides on fixed mass piece 4 by the slide rail 5 of bottom, and bottom slide rail intermittent oiling is to reduce friction; Fig. 2 is the slide rail partial schematic diagram, and wherein 6 of slide rail slide blocks, as 13 bottoms that are connected to cabin moving mass 3, slide on slide rail base 14,15; Moving mass part 3 mainly consists of wind wheeling rotor 1, wheel hub 2, lower velocity shaft 8, gear-box 9, high speed shaft 10, generator 11, and fixed mass piece 4 consists of cabin; Connect by elastic device 6 between moving mass 3 and fixed mass piece 4, form damped system, wherein the elasticity coefficient of damped system and damping ratio can be regulated.
For the conventional wind power generator group that there is no the separated type cabin, active force will act directly on cabin and pylon, cause tower oscillation.For the wind power generating set with the separated type cabin of the present invention, when pylon is subject to the active force of direction 12 in Fig. 1, moving mass 3 is subject to active force and slides to forward position slide rail 5, causes that elastic device 6 shrinks; When blower fan, during along direction 12 vibration, the inertial load of moving mass 3 will cause stretching or the contraction of the elastic device 6 of 3,4 of two mass blockes, cause moving mass 3 by the relative movement of 4 of slide rail 5 and fixed mass pieces, form a damped system; The damping characteristic of damped system will be cut down the kinetic energy of tower oscillation, thereby reach the purpose that reduces pylon load, reduces tower oscillation.Wherein the elasticity coefficient of damped system and damping ratio can be regulated, and then reduce vibration natural frequency and the vibration amplitude of pylon.
It should be noted last that, above embodiment is only in order to explanation and unrestricted technological scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to the above embodiments,, those of ordinary skill in the art should be appreciated that the replacement that still can modify or be equal to the present invention; And all do not break away from technological scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. the blower fan pylon load shedding method based on the separated type cabin, is characterized in that the separated type cabin that design consists of moving mass and fixed mass piece two-part, and two-part connect by elastic device.
2. blower fan pylon load shedding method as claimed in claim 1, is characterized in that the moving mass part in described separated type cabin consists of rotor, wheel hub, transmission system, generator, and fixed mass piece part consists of the cabin casing frame.
3. blower fan pylon load shedding method as claimed in claim 1, is characterized in that described moving mass slides by rolling bearing in bottom on slide rail, and the slide rail intermittent oiling is to reduce friction.
4. blower fan pylon load shedding method as claimed in claim 1, is characterized in that elasticity coefficient and the damping ratio of the elastic device of described connection moving mass and fixed mass piece can be regulated, thereby reduce the harmonious vibration amplitude of tower oscillation natural frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101682812A CN103452768A (en) | 2012-05-28 | 2012-05-28 | Fan tower load shedding method based on separated engine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101682812A CN103452768A (en) | 2012-05-28 | 2012-05-28 | Fan tower load shedding method based on separated engine room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103452768A true CN103452768A (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012101682812A Pending CN103452768A (en) | 2012-05-28 | 2012-05-28 | Fan tower load shedding method based on separated engine room |
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| CN (1) | CN103452768A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532570A (en) * | 2015-04-02 | 2018-01-02 | 安赛乐米塔尔公司 | Wind turbine tower section, wind turbine tower and assemble method |
| CN109268213A (en) * | 2018-08-22 | 2019-01-25 | 明阳智慧能源集团股份公司 | A kind of wind power generating set load on-line monitoring and active load shedding control method |
| CN112032005A (en) * | 2020-09-04 | 2020-12-04 | 天津大学 | Fan with tuned mass damper |
| CN112081864A (en) * | 2020-09-04 | 2020-12-15 | 天津大学 | Tuned mass damper for out-of-plane vibration control of fan structure |
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| US5442883A (en) * | 1991-05-29 | 1995-08-22 | Kajima Corporation | Vibration control device for structure |
| CN1318135A (en) * | 1998-05-29 | 2001-10-17 | 尼格麦康有限公司 | Wind turbine with oscillation damping means |
| CN201202591Y (en) * | 2008-05-21 | 2009-03-04 | 三一电气有限责任公司 | Tuning quality damper vibration damping control device for fan |
| CN201326521Y (en) * | 2008-12-24 | 2009-10-14 | 华锐风电科技有限公司 | Slide yaw bearing device of wind turbine |
| CN101737246A (en) * | 2008-11-07 | 2010-06-16 | 通用电气公司 | Drive train supporting structure for a wind turbine |
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2012
- 2012-05-28 CN CN2012101682812A patent/CN103452768A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5442883A (en) * | 1991-05-29 | 1995-08-22 | Kajima Corporation | Vibration control device for structure |
| CN1318135A (en) * | 1998-05-29 | 2001-10-17 | 尼格麦康有限公司 | Wind turbine with oscillation damping means |
| CN201202591Y (en) * | 2008-05-21 | 2009-03-04 | 三一电气有限责任公司 | Tuning quality damper vibration damping control device for fan |
| CN101737246A (en) * | 2008-11-07 | 2010-06-16 | 通用电气公司 | Drive train supporting structure for a wind turbine |
| CN201326521Y (en) * | 2008-12-24 | 2009-10-14 | 华锐风电科技有限公司 | Slide yaw bearing device of wind turbine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532570A (en) * | 2015-04-02 | 2018-01-02 | 安赛乐米塔尔公司 | Wind turbine tower section, wind turbine tower and assemble method |
| CN107532570B (en) * | 2015-04-02 | 2019-07-05 | 安赛乐米塔尔公司 | Wind turbine tower section, wind turbine tower and assemble method |
| CN109268213A (en) * | 2018-08-22 | 2019-01-25 | 明阳智慧能源集团股份公司 | A kind of wind power generating set load on-line monitoring and active load shedding control method |
| CN112032005A (en) * | 2020-09-04 | 2020-12-04 | 天津大学 | Fan with tuned mass damper |
| CN112081864A (en) * | 2020-09-04 | 2020-12-15 | 天津大学 | Tuned mass damper for out-of-plane vibration control of fan structure |
| CN112032005B (en) * | 2020-09-04 | 2022-08-12 | 天津大学 | Fan with tuned mass damper |
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Application publication date: 20131218 |
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| RJ01 | Rejection of invention patent application after publication |