CN101527495A - Braking starter of horizontal axle windmill - Google Patents
Braking starter of horizontal axle windmill Download PDFInfo
- Publication number
- CN101527495A CN101527495A CN200810231819A CN200810231819A CN101527495A CN 101527495 A CN101527495 A CN 101527495A CN 200810231819 A CN200810231819 A CN 200810231819A CN 200810231819 A CN200810231819 A CN 200810231819A CN 101527495 A CN101527495 A CN 101527495A
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- brake disc
- brake
- electromagnet
- shaped electromagnet
- power transmission
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Abstract
The invention relates to a braking starter of a horizontal axle windmill, which aims to rapidly stop, improve the braking efficiency, reduce abrasion and prolong the service life of a gearbox at a high speed, start the windmill at a low wind speed, reduce the cut-in wind speed and improve the utilization efficiency of effective wind energy. A braking disc 1 is arranged on a transmission axle 6, and the plane where the braking disc 1 is on is vertical to the axis OO' of the transmission axle 6; the axis PP' of electromagnetic coils 5 is parallel to the axis OO' of the transmission axle 6; the middle end of the lower part of a U-shaped electromagnet 2 is arranged in the electromagnetic coils 5, two magnetic poles 3,4 of the U-shaped electromagnet are arranged in opposite, the outer edge of the braking disc 1 is arranged between the two opposite magnetic poles 3,4 of the U-shaped electromagnet 2, and a plurality of U-shaped electromagnets 2 are respectively arranged along the circumferential direction of the braking disc 1.
Description
Technical field
The present invention relates to horizontal-shaft wind turbine drives and brake gear.
Background technology
The wind energy conversion system brake system generally is made up of aerodynamic brake and mechanical brake two cover brake system in the prior art, pneumatic braking system is to lean against blade tip to add flow spoiler or blade adjusting device and increase aerodynamic drag and brake, mechanical brake generally is installed on the high speed shaft of drive system, the hydraulic-driven disc type mechanical braking devices that adopt more, hydraulic system drives the band brake apparatus that brake block is housed during brake, frictional force between brake block and the brake disc can produce moment of friction, thereby finishes brake process.Because mechanical brake is the frictionally effect, particularly require in very short time, to make the system quiesce that runs up, brake block and brake disk can produce phenomenons such as wearing and tearing, caloric value are big, directly cause the brake inefficacy; Secondly because hydraulic system needs big pressure, the hydraulic system seal member is had higher requirements, seal failure also happens occasionally, and causes occurring the hydraulic system oil leakage phenomenon, and operational environment is polluted and potential safety hazard; Once more, to non-direct drive type wind energy conversion system, because the existence of step-up gear, the mechanical brake system exists vibration and inertia impact phenomenon to gear box, and gear box is had very havoc effect, except that producing noise, also can make gear box broken teeth or inefficacy.Its weak point is: high speed is difficult for parking, mechanical wear greatly, to the gear box impact greatly, and has oil leakage phenomenon to take place.In addition, particularly large scale wind power machine difficult startup when hanging down wind speed cut the wind speed height, and the available wind energy utilization ratio is low, and present mechanical braking device only plays braking action, and startup be there is no help.
Summary of the invention
An object of the present invention is can stop fast when high speed, improve braking efficiency, reduce wear, prolong the gear box life-span, another purpose is that wind energy conversion system can be started when hanging down wind speed, reduces the incision wind speed, improves the available wind energy utilization ratio.
The present invention is a kind of horizontal-shaft wind turbine brake and starting drive, its brake disc 1 is installed on the power transmission shaft 6, plane, brake disc 1 place is perpendicular to the axes O O ' of power transmission shaft 6, the axis PP ' of solenoid 5 is parallel to the axes O O ' of power transmission shaft 6, the bottom middle-end of U-shaped electromagnet 2 is installed in the solenoid 5, two magnetic poles 3,4 of U-shaped electromagnet 2 are installed relatively, the outer rim of brake disc 1 is between relative two magnetic poles 3,4 of U-shaped electromagnet 2, along several U-shaped electromagnet 2 are installed respectively on the circumferencial direction of brake disc 1.
Usefulness of the present invention is: big brake torque can be provided under high speed conditions during brake, and noncontact brake during electromagnetic eddy current brake, can reduce mechanical wear, electromagnetic eddy current brake and mechanical brake are used, can reduce vibration and to the gear box inertia impact, thereby prolong the gear box life-span.When the low wind speed of wind energy conversion system started, the push-and-pull magnetic circuit that each electromagnet forms ordered about disk and rotates, and wind energy conversion system is started when hanging down wind speed, improved the available wind energy utilization ratio.
Description of drawings
Fig. 1 is a front view of the present invention, and Fig. 2 is that A among Fig. 1 is to view.
Embodiment
As shown in Figure 1 and Figure 2, the present invention is a kind of horizontal-shaft wind turbine brake and starting drive, its brake disc 1 is installed on the power transmission shaft 6, plane, brake disc 1 place is perpendicular to the axes O O ' of power transmission shaft 6, the axis PP ' of solenoid 5 is parallel to the axes O O ' of power transmission shaft 6, the bottom middle-end of U-shaped electromagnet 2 is installed in the solenoid 5, two magnetic poles 3,4 of U-shaped electromagnet 2 are installed relatively, the outer rim of brake disc 1 is between relative two magnetic poles 3,4 of U-shaped electromagnet 2, along several U-shaped electromagnet 2 are installed respectively on the circumferencial direction of brake disc 1.Along odd number U-shaped electromagnet 2 is installed respectively on the circumferencial direction of brake disc 1, odd number numerical value is 11 to the maximum.
Embodiment one
As shown in Figure 1 and Figure 2, brake disc 1 is installed on the power transmission shaft 6, plane, brake disc 1 place is perpendicular to the axes O O ' of power transmission shaft 6, the axis PP ' of solenoid 5 is parallel to the axes O O ' of power transmission shaft 6, the bottom middle-end of U-shaped electromagnet 2 is installed in the solenoid 5, two magnetic poles 3,4 of U-shaped electromagnet 2 are installed relatively, and the outer rim of brake disc 1 is between relative two magnetic poles 3,4 of U-shaped electromagnet 2, along several U-shaped electromagnet 2 are installed respectively on the circumferencial direction of brake disc 1.When power transmission shaft 6 is high speed rotating shaft, switch on for during brake each electromagnet coil 5 simultaneously, make each electromagnet 2 magnetic direction the same, brake disc 1 cutting magnetic line of rotation, in brake disc 1, produce vortex flow, vortex flow produces counter magnetic field brake disc 1 is produced braking moment, the size of current of passing through in the size of required braking moment and the solenoid 5 is relevant, the magnetic field intensity one of electromagnet 2 regularly, braking moment is directly proportional substantially with the rotating speed of brake disc 1, can obtain needed brake torque according to size of current in the rotational speed regulation solenoid 5 like this.
Embodiment two
As shown in Figure 1 and Figure 2, brake disc 1 is installed on the power transmission shaft 6, plane, brake disc 1 place is perpendicular to the axes O O ' of power transmission shaft 6, the axis PP ' of solenoid 5 is parallel to the axes O O ' of power transmission shaft 6, the bottom middle-end of U-shaped electromagnet 2 is installed in the solenoid 5, two magnetic poles 3,4 of U-shaped electromagnet 2 are installed relatively, and the outer rim of brake disc 1 is between relative two magnetic poles 3,4 of U-shaped electromagnet 2, along several U-shaped electromagnet 2 are installed respectively on the circumferencial direction of brake disc 1.When the low wind speed of wind energy conversion system starts, two magnetic poles 3,4 of each electromagnet 2 turn over an angle relatively, both sides at brake disc 1 evenly distribute, switch on for each solenoid 5 simultaneously, make the magnetic field of adjacent electromagnet opposite, form the push-and-pull magnetic circuit in brake disc 1 both sides, provide staring torque, make wind energy conversion system when hanging down wind speed, be easy to start to disk.
Claims (4)
1, horizontal-shaft wind turbine brake and starting drive, brake disc (1) is installed on the power transmission shaft (6), brake disc (1) plane, place is perpendicular to the axis (OO ') of power transmission shaft (6), it is characterized in that the axis (PP ') of solenoid (5) is parallel to the axis (OO ') of power transmission shaft (6), the bottom middle-end of U-shaped electromagnet (2) is installed in the solenoid (5), two magnetic poles (3 of U-shaped electromagnet (2), 4) install relatively, the outer rim of brake disc (1) is positioned at two relative magnetic poles (3 of U-shaped electromagnet (2), 4) between, along several U-shaped electromagnet (2) are installed respectively on the circumferencial direction of brake disc (1).
2, horizontal-shaft wind turbine brake according to claim 1 and starting drive is characterized in that odd number numerical value is 11 to the maximum along odd number U-shaped electromagnet (2) is installed respectively on the circumferencial direction of brake disc (1).
3, horizontal-shaft wind turbine brake according to claim 1 and starting drive, when it is characterized in that power transmission shaft (6) for high speed rotating shaft, switch on for during brake each electromagnet coil (5) simultaneously, make each electromagnet (2) magnetic direction the same, brake disc (1) cutting magnetic line of rotation, produce vortex flow in brake disc (1), vortex flow produces counter magnetic field brake disc (1) is produced braking moment.
4, horizontal-shaft wind turbine brake according to claim 1 and starting drive, it is characterized in that when the low wind speed of wind energy conversion system starts, two magnetic poles (3,4) of each electromagnet (2) turn over an angle relatively, both sides at brake disc (1) evenly distribute, switch on for each solenoid (5) simultaneously, make the magnetic field of adjacent electromagnet opposite, form the push-and-pull magnetic circuit in brake disc (1) both sides, provide staring torque to disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810231819A CN101527495A (en) | 2008-10-06 | 2008-10-06 | Braking starter of horizontal axle windmill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810231819A CN101527495A (en) | 2008-10-06 | 2008-10-06 | Braking starter of horizontal axle windmill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101527495A true CN101527495A (en) | 2009-09-09 |
Family
ID=41095229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810231819A Pending CN101527495A (en) | 2008-10-06 | 2008-10-06 | Braking starter of horizontal axle windmill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101527495A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128227A (en) * | 2011-04-02 | 2011-07-20 | 江苏大学 | Electromagnet and friction composite disc type brake and brake method |
-
2008
- 2008-10-06 CN CN200810231819A patent/CN101527495A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128227A (en) * | 2011-04-02 | 2011-07-20 | 江苏大学 | Electromagnet and friction composite disc type brake and brake method |
| CN102128227B (en) * | 2011-04-02 | 2012-11-07 | 江苏大学 | Brake method of electromagnet and friction composite disc type brake |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090909 |