CN201250868Y

CN201250868Y - Wind electric power generation brake device

Info

Publication number: CN201250868Y
Application number: CNU200820112958XU
Authority: CN
Inventors: 黄小芳
Original assignee: BENLING ENGINES Manufacturing IND Co Ltd TAIZHOU
Current assignee: BENLING ENGINES Manufacturing IND Co Ltd TAIZHOU
Priority date: 2008-05-29
Filing date: 2008-05-29
Publication date: 2009-06-03
Anticipated expiration: 2018-05-29

Abstract

The utility model relates to the field of the hydraulic brake technology, in particular to a wind electric power generation brake device. The wind electric power generation brake device comprises a brake disc fixedly connected to the rotating shaft of a wind driven generator and a hydraulic brake which is matched with the upper lower end surface and the lower end surface of the brake disc and is used for braking the rotating shaft of the wind driven generator. Compared with the prior art, the utility model adopts a hydraulic braking mode to enclasp and brake the brake disc through a brake plate arranged on the brake device, has the advantages of short braking time and good braking effect, and has certain buffer action, thereby the rotational speed of the wind driven generator can be effectively controlled and the damage of the devices is reduced due to overlarge rotational speed. The utility model is a very ideal wind electric power generation brake device.

Description

The wind-power electricity generation braking device

Technical field

The utility model relates to a kind of hydraulic braking technical field, refers in particular to a kind of hydraulic brake system that is used in the wind-driven generator rotating shaft.

Background technique

Non-renewable energy resources are fewer and feweri now, and the energy of consumption is more and more, and alternative energy source is all being sought by each state, and in the renewable energy sources, wind energy is undoubtedly very important one side, and wind energy is a kind of pollution-free green environment protection type energy, and each state all is used wideling popularize.

One big critical component of wind power plant is exactly a rotor, rotor rotation produces, in the continual rotation process of rotor, also continual generation electric energy, if but run into excessive or some equipment failures of wind-force, just need stop rotor rotation with maintenance of equipment, this just needs a break, the break that extensive application is arranged in the prior art, mechanical brake as frequent use, it adopts the principle of gear engagement to brake, this braking method has advantages such as period of braking weak point, but its equipment precision prescribed height, manufacture cost is high and exist wearing and tearing big, defectives such as working life is short, also some is to use the electronic circuit braking, as a braking short circuit is set on motor, it is far away that this braking method has command range, simple in structure, advantages such as long service life, but it is long also to exist period of braking, defectives such as braking effect difference.

The model utility content

Be the defective and the deficiency of braking device in the wind power plant in the solution prior art, a kind of good braking effect, the short hydraulic type braking device of period of braking are provided.

For addressing the above problem, wind-power electricity generation braking device of the present utility model comprises that one is fixedly connected on the hydraulic brake that the brake disc and on the wind-driven generator rotatingshaft matches the rotatingshaft of wind-driven generator is braked with the both ends of the surface up and down of brake disc.

Above-mentioned hydraulic brake is provided with steel plate for the inside at the hydraulic cylinder that is provided with the hydraulic pressure import and export is provided with piston in the outer end of piston, be provided with braking plate in the outer end of steel plate.

Above-mentioned piston, steel plate and braking plate are symmetrically arranged with two groups in hydraulic cylinder.

Above-mentioned piston and hydraulic cylinder contacting point are provided with seal ring;

Described hydraulic brake is fixed on the generator unit stator;

When the driftage braking, described hydraulic brake is fixed on the bottom surface of aerogenerator machine base.

Compared with prior art, wind-power electricity generation braking device of the present utility model adopts the braking mode of hydraulic type, one brake disc is set on rotatingshaft, both ends of the surface up and down at brake disc are provided with braking device, by the braking plate on the braking device brake disc is held tightly braking, its period of braking is short, good braking effect, and has certain buffer function, can effectively control the rotating speed of wind-driven generator, reducing the excessive device damage that causes of rotating speed, is a kind of very desirable wind-power electricity generation braking device.

Description of drawings

Fig. 1 is the brake device structure schematic representation of wind-power electricity generation braking device of the present utility model;

Fig. 2 is the structural representation of wind-power electricity generation braking device of the present utility model when user mode.

Embodiment

Below in conjunction with the drawings and specific embodiments wind-power electricity generation braking device of the present utility model is described further:

Referring to Fig. 1-2: wind-power electricity generation braking device of the present utility model comprise one be fixedly connected on the rotatingshaft 1 brake disc 2 and one with the brake disc hydraulic brake that both ends of the surface match about in the of 2 10.Hydraulic brake 10 is fixed on the generator unit stator 3, and when the driftage braking, hydraulic brake 10 is fixed on the bottom surface of aerogenerator machine base.

Hydraulic brake 10 comprises an oil hydraulic cylinder 11, steel plate 13 on one piston 12 and the piston 12 and with a braking plate 14 that is pressed on the steel plate 13, oil hydraulic cylinder 11 is divided into two groups of cylinder bodies, on one group of cylinder body, has a filler opening 15, has an oil outlet 16 on another cylinder body, piston 12 places in the oil hydraulic cylinder 11, be provided with seal ring 17 in piston 12 and oil hydraulic cylinder 11 contacting points, seal ring 17 has guaranteed the sealability of cylinder body, piston 12 withstands on the steel plate 13, steel plate 13 is applied a pressure, steel plate 13 is connected with braking plate 14, the pressure of 12 pairs of steel plates 13 of piston is applied on the braking plate 14 fully, steel plate 13 plays the effect of a balance and uniform pressure, makes the stress equalization on the braking plate 14.

Brake disc 2 is fixed together with rotatingshaft 1, and keep coaxial rotating speed with rotatingshaft 1, hydraulic brake 10 is a state of rest, hydraulic brake 10 is arranged on the both sides up and down of brake disc 2, when work, after adding the hydraulic oil of certain pressure from filler opening 15, hydraulic oil promotes piston 12 and outwards moves, in the movement process of piston 12, promote braking plates 14 and outwards move to braking plate 14 and hold tightly, thereby the brake disc 2 of rotation is stopped operating or slow down rotation in the both ends of the surface up and down of brake disc 2 by steel plate 13.

According to embodiment of the present utility model to being illustrated property of the utility model and nonrestrictive description; but should understand; under the situation that does not break away from relevant protection domain defined by the claims, those skilled in the art can make change and/or revise.

Claims

1. The brake device for wind power generation, which is characterized in that it includes a brake disc fixedly connected to the rotating shaft of the wind power generator and a brake disc that cooperates with the upper and lower end surfaces of the brake disc to brake the rotating shaft of the wind power generator. hydraulic brakes.

2. The brake device for wind power generation according to claim 1, characterized in that: the hydraulic brake is provided with a piston inside the hydraulic cylinder block provided with a hydraulic inlet and outlet, and a steel plate is provided at the outer end of the piston, Brake pads are arranged on the outer ends of the steel plates.

3. The braking device for wind power generation according to claim 2, wherein two groups of the piston, the steel plate and the brake disc are arranged symmetrically in the hydraulic cylinder.

4. The braking device for wind power generation according to claim 2, characterized in that a sealing ring is provided at the contact between the piston and the hydraulic cylinder body.

5. The braking device for wind power generation according to claim 1, 3 or 4, characterized in that the hydraulic brake is fixed on the stator of the generator.

6. The braking device for wind power generation according to claim 1, 3 or 4, characterized in that, during yaw braking, the hydraulic brake is fixed on the bottom surface of the wind power generator frame.