CN202646479U - Yaw brake of wind turbine generator system - Google Patents

Yaw brake of wind turbine generator system Download PDF

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Publication number
CN202646479U
CN202646479U CN 201220215704 CN201220215704U CN202646479U CN 202646479 U CN202646479 U CN 202646479U CN 201220215704 CN201220215704 CN 201220215704 CN 201220215704 U CN201220215704 U CN 201220215704U CN 202646479 U CN202646479 U CN 202646479U
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CN
China
Prior art keywords
piston
piston cavity
friction plate
guide sleeve
matrix
Prior art date
Application number
CN 201220215704
Other languages
Chinese (zh)
Inventor
唐超利
沈凤亚
陈伟梁
余国城
Original Assignee
浙江运达风电股份有限公司
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Application filed by 浙江运达风电股份有限公司 filed Critical 浙江运达风电股份有限公司
Priority to CN 201220215704 priority Critical patent/CN202646479U/en
Application granted granted Critical
Publication of CN202646479U publication Critical patent/CN202646479U/en

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    • Y02E10/723

Abstract

The utility model provides a yaw brake of a wind turbine generator system. The yaw brake comprises a basic body, a piston and a friction sheet. The basic body is provided with a notch for inserting a brake disk, a piston cavity is symmetrically arranged on basic bodies on the upper portion and the lower portion of the notch, the piston can be sleeved in the middle of the piston cavity in vertically sliding and sealing mode, one end of the bottom of the piston cavity is communicated with an oil inlet, the other end of the bottom of the piston cavity is communicated with an oil outlet, the friction sheet contacted with the brake disk is arranged on the upper portion of the piston cavity, the friction sheet is contacted with the piston, a through hole is arranged in the middle of the piston, a guide sleeve, a disk-shaped spring, a guide block and a regulating bolt are sequentially installed in the through hole along the upper portion of the piston cavity to the lower portion of the piston cavity, the guide sleeve is contacted with the friction sheet, one end of the disk-shaped spring butts against the inner portion of the guide sleeve, the other end of the disk-shaped spring is connected with the guide block, and the guide block is contacted with the regulating bolt. The yaw brake of the wind turbine generator system can supply necessary damping after hydraulic pressure is lost, and is high in safety.

Description

The wind generating set yaw break

Technical field

The utility model relates to a kind of wind generating set yaw break.

Background technique

Yaw system is horizontal axis Large-scale Wind Turbines vitals, its Main Function is that the wind wheel swept surface of wind power generating set is in all the time over against the wind direction state, in order to fully absorb wind energy, provide simultaneously necessary damping torque, to ensure the smooth running of wind power generating set.Common large-scale horizontal axis wind-driven generator group yaw system is installed on the mainframe, as shown in Figure 1.It is comprised of parts such as driftage driving 1, pivoting support 2, brake disc 3, breaks 4.

The structure of traditional off-course brake 4 as shown in Figure 2, it is made of matrix 411, piston 412, friction plate 413.Its working principle is as follows, when break 4 work, hydraulic oil enters piston 412 end portion cavity by filler opening oil pressure (this moment, oil outlet and hydraulic system disconnected) is provided, oil pressure acts on the piston 412, by piston 412 axial pressure is passed to friction plate 413, make it produce positive pressure and friction torque at brake disc 3, to play the effect of braking and damping.

Wind power generating set running environment is abominable, therefore can break down unavoidably.When hydraulic system breaks down and can not recover the short time or typhoon is attacked electric grid large area, long-time outage, hydraulic power unit can't be worked when causing hydraulic pressure to be lost for a long time, traditional break can't provide necessary damping after losing hydraulic pressure, will produce serious influence safely to yaw system and complete machine.

Summary of the invention

In order to overcome damping that existing off-course brake loses can't provide necessary behind the hydraulic pressure, to have the deficiency of potential safety hazard, the utility model provides a kind of and still effectively provides necessary damping, safe wind generating set yaw break after losing hydraulic pressure.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of wind generating set yaw break, comprise matrix, piston and friction plate, described matrix has the notch for the brake disc plug-in mounting, be symmetrical arranged piston cavity on the matrix of described notch top and the bottom, described piston can slide up and down to the middle part that stuffing box gland is contained in piston cavity, bottom one end of described piston cavity is communicated with filler opening, the bottom the other end of described piston cavity is communicated with oil outlet, the top of described piston cavity arranges the friction plate that contacts with described brake disc, described friction plate contacts with described piston, described piston middle part is provided with pilot hole, along the top of piston cavity guide sleeve is installed successively to the bottom in the described through hole, belleville spring, guide pad and adjustment bolt, described guide sleeve contacts with friction plate, one end of described belleville spring is conflicted in guide sleeve, the other end of described belleville spring is connected with guide pad, and described guide pad is fixedly connected with the adjustment bolt.

Further, described adjustment bolt stretches out described matrix, installs in the section of stretching out of described adjustment bolt and adjusts bolt and lock nut.

The beneficial effects of the utility model are mainly manifested in: this brake structural is compact, be easy to realize, safe and reliable, easy and simple to handle.Attack electric grid large area, long-time outage in case hydraulic system fault or typhoon occur, still can provide certain damping for yaw system.To ensureing that set yaw system and whole unit safety play vital effect.

Description of drawings

Fig. 1 is the schematic diagram of traditional type horizontal axis wind-driven generator group yaw system.

Fig. 2 is the structural representation of existing off-course brake.

Fig. 3 is the structural representation of off-course brake of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

With reference to Fig. 3, a kind of wind generating set yaw break, comprise matrix 421, piston 422 and friction plate 428, described matrix 421 has the notch for the brake disc plug-in mounting, be symmetrical arranged piston cavity on the matrix of described notch top and the bottom, described piston 422 can slide up and down to the middle part that stuffing box gland is contained in piston cavity, bottom one end of described piston cavity is communicated with filler opening, the bottom the other end of described piston cavity is communicated with oil outlet, the top of described piston cavity arranges the friction plate 428 that contacts with described brake disc, described friction plate 428 contacts with described piston 422, described piston 422 middle parts are provided with through hole, along the top of piston cavity guide sleeve 423 is installed successively to the bottom in the described through hole, belleville spring 427, guide pad 426 and adjustment bolt 424, described guide sleeve 423 contacts with friction plate 422, one end of described belleville spring 427 is conflicted in guide sleeve 423, and the other end of described belleville spring 427 is connected with guide pad 426, and described guide pad 426 contacts with adjustment bolt 424.

Further, described adjustment bolt 424 stretches out described matrix 421, installs in the section of stretching out of described adjustment bolt and adjusts bolt 424 and locking nut 425.

The break of the present embodiment can provide certain braking moment in the situation that hydraulic pressure lacks still fully, can guarantee the work of yaw system and the damage of minimizing unit, and its structure as shown in Figure 3.This brake braking force is provided jointly by hydraulic pressure and belleville spring dual mode.Its critical piece has: matrix 421, piston 422, guide sleeve 423, adjustment bolt 424, locking nut 425, guide pad 426, belleville spring 427 and friction plate 428.

The break belleville spring provides the principle of friction positive pressure to be: regulate and adjust bolt 424, transmit axial force in guide pad 426, and make belleville spring 427 compressive strains, belleville spring 427 transmits axial force in guide sleeve 423 simultaneously, axial force is passed to friction plate 428 the most at last, thereby forms positive pressure between friction plate 428 and brake disc 3.Adjust bolt 424 by rotation and regulate the friction positive pressure, finally reach the adjustment damping function.For prevent that adjusting bolt 424 occurs to become flexible in the yaw system working procedure, need after regulating adjustment bolt 424, tighten locking nut 425 and prevent that it is loosening.

The wearing and tearing of friction plate 428 can affect the damping size that belleville spring 427 provides, but because the friction plate life cycle is long, the rate of wear is slow, as long as therefore make regular check on and regulate adjustment bolt 424, control belleville spring 427 acts on the size of thrust on the friction plate 428, guarantees that butterfly spring 427 acts on the pressure on the friction plate 428.

Break is combined as friction plate 428 by hydraulic pressure and belleville spring 427 during the hydraulic system normal operation provides thrust; If hydraulic system fault can not normally provide pressure, will provide thrust by belleville spring 427 to friction plate separately so, thereby produce friction torque at brake disc.

Claims (2)

1. wind generating set yaw break, comprise matrix, piston and friction plate, described matrix has the notch for the brake disc plug-in mounting, be symmetrical arranged piston cavity on the matrix of described notch top and the bottom, described piston can slide up and down to the middle part that stuffing box gland is contained in piston cavity, bottom one end of described piston cavity is communicated with filler opening, the bottom the other end of described piston cavity is communicated with oil outlet, the top of described piston cavity arranges the friction plate that contacts with described brake disc, described friction plate contacts with described piston, it is characterized in that: described piston middle part is provided with through hole, along the top of piston cavity guide sleeve is installed successively to the bottom in the described through hole, belleville spring, guide pad and adjustment bolt, described guide sleeve contacts with friction plate, one end of described belleville spring is conflicted in guide sleeve, the other end of described belleville spring is connected with guide pad, and described guide pad is fixedly connected with the adjustment bolt.
2. wind generating set yaw break as claimed in claim 1, it is characterized in that: described adjustment bolt stretches out described matrix, installs in the section of stretching out of described adjustment bolt and adjusts bolt and lock nut.
CN 201220215704 2012-05-14 2012-05-14 Yaw brake of wind turbine generator system CN202646479U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220215704 CN202646479U (en) 2012-05-14 2012-05-14 Yaw brake of wind turbine generator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220215704 CN202646479U (en) 2012-05-14 2012-05-14 Yaw brake of wind turbine generator system

Publications (1)

Publication Number Publication Date
CN202646479U true CN202646479U (en) 2013-01-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220215704 CN202646479U (en) 2012-05-14 2012-05-14 Yaw brake of wind turbine generator system

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CN (1) CN202646479U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103343789A (en) * 2013-07-16 2013-10-09 大连华锐重工集团股份有限公司 Yaw brake of wind power generation device and controlling method thereof
CN105485216A (en) * 2016-01-12 2016-04-13 广东明阳风电产业集团有限公司 Yaw braking system for wind generating set
CN106299734A (en) * 2015-06-11 2017-01-04 刘高潮 Employ the cylindricality terminal of disk spring washer
CN107387603A (en) * 2017-07-21 2017-11-24 嘉兴南洋职业技术学院 The driftage composite braking system of wind power generating set
CN109707772A (en) * 2019-01-30 2019-05-03 嘉兴南洋职业技术学院 Wind-driven generator composite braking mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103343789A (en) * 2013-07-16 2013-10-09 大连华锐重工集团股份有限公司 Yaw brake of wind power generation device and controlling method thereof
CN103343789B (en) * 2013-07-16 2015-08-12 大连华锐重工集团股份有限公司 A kind of off-course brake of wind power plant and controlling method thereof
CN106299734A (en) * 2015-06-11 2017-01-04 刘高潮 Employ the cylindricality terminal of disk spring washer
CN105485216A (en) * 2016-01-12 2016-04-13 广东明阳风电产业集团有限公司 Yaw braking system for wind generating set
CN107387603A (en) * 2017-07-21 2017-11-24 嘉兴南洋职业技术学院 The driftage composite braking system of wind power generating set
CN107387603B (en) * 2017-07-21 2019-01-01 嘉兴南洋职业技术学院 The yaw composite braking system of wind power generating set
CN109707772A (en) * 2019-01-30 2019-05-03 嘉兴南洋职业技术学院 Wind-driven generator composite braking mechanism

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