阅读说明：本技术 一种风力发电机用限速装置 (Speed limiting device for wind driven generator ) 是由 邵振州 孔金良 史俊 米磊 董显奕 李建华 高国青 于 2021-11-04 设计创作，主要内容包括：本发明公开了一种风力发电机用限速装置,涉及风力发电机械领域,针对现有风力发电机耐热性不高,且限速效果不佳的问题,现提出如下方案,包括固定头、扇叶、转动轴、防护壳、控制器刹车盘、伸缩杆和刹车板,所述扇叶固定安装在固定头上,所述转动轴垂直于扇叶固定连接在固定头上,且所述转动轴垂直贯穿防护壳,所述控制器固定安装在防护壳内侧,所述刹车盘呈圆形,且所述转动轴垂直贯穿刹车盘,所述伸缩杆尾部垂直固定在防护壳侧壁上,且所述伸缩杆端部与刹车板固定连接,所述伸缩杆垂直于刹车板。该装置能够提高强风状态下限速装置的耐热性能,避免了限速装置因过热而失去作用,且限速能力较强,提高了该装置的实用性能。(The invention discloses a speed limiting device for a wind driven generator, relates to the field of wind power generation machinery, and aims to solve the problems that the existing wind driven generator is not high in heat resistance and poor in speed limiting effect. The device can improve the heat resistance of the speed limiting device in a strong wind state, avoids the loss of the effect of the speed limiting device due to overheating, has strong speed limiting capacity and improves the practical performance of the device.)

1. A speed limiting device for a wind driven generator is characterized by comprising: the brake device comprises a fixed head (1), fan blades (2), a rotating shaft (3), a protective shell (4), a controller (5), a brake disc (6), a telescopic rod (7) and a brake plate (10);

wherein the fan blade (2) is connected with the fixed head (1), the fixed head (1) is connected with the transmission shaft (3), and the transmission shaft (3) penetrates through the protective shell (4) and also penetrates through the brake disc (6) positioned in the protective shell (4); the controller (5) is fixed on the inner side of the protective shell (4) and used for monitoring the rotating speed of the brake disc (6);

a telescopic rod (7) and a brake plate (10) are also arranged in the protective shell (4); the brake plate (10) is arranged aiming at the brake disc (6); the tail part of the telescopic rod (7) is vertically fixed on the side wall of the protective shell (4), and the end part of the telescopic rod (7) is vertically and fixedly connected with the brake plate (10).

2. A speed limiting device for wind power generator according to claim 1, characterized by further comprising a balancing bar (8); the balance rods (8) are arranged on two sides of the telescopic rod (7), the end parts of the balance rods (8) are vertically fixed on the brake plate (10), and the tail parts of the balance rods are vertically fixed on the side wall of the protective shell (4).

3. A speed limiting device for a wind power generator according to claim 1, characterized in that a wear pad (11) is connected to the brake plate (10) on the side close to the brake disc (6).

4. A speed limiting device for wind power generator according to claim 1, further comprising a stub axle (16), a tachometer wheel (17) and a clamping plate (18); wherein one side of the controller (5) close to the brake disc (6) is provided with a clamping plate (18), one side of the clamping plate (18) far away from the controller (5) is provided with a short shaft (16), and the short shaft (16) is provided with a tachometer wheel (17) contacting the brake disc (6); the tachometer wheel (17) is used for monitoring the rotational speed of the brake disc (6) when the brake disc (6) rotates.

5. A speed limiting device for a wind power generator according to claim 3, characterized in that a cooler (12) is arranged on the side of the brake plate (10) far away from the wear pad (11).

6. A speed limiting device for a wind driven generator according to claim 5, characterized in that the semiconductor refrigeration sheet (13) is installed inside the cooler (12).

7. The speed limiting device for the wind driven generator according to claim 5, characterized in that a condensation pipe (14) is arranged inside the brake plate (10), and the condensation pipe (14) penetrates through the brake plate (10) and is connected below the cooler (12).

8. A speed limiting device for a wind driven generator according to claim 5, characterized in that the temperature sensor (9) is arranged on the brake plate (10) at one side of the cooler (12).

9. The speed limiting device for the wind driven generator according to claim 8, wherein the temperature sensor (9) is electrically connected with the cooler (12).

10. The speed limiting device for the wind driven generator according to claim 1, wherein the brake disc (6) is provided with a through hole (15).

Technical Field

The invention relates to the field of wind power generation machinery, in particular to a speed limiting device for a wind driven generator.

Background

The wind power generation means that the kinetic energy of wind is converted into electric energy, the working principle of the wind power generator is simple, the wind wheel rotates under the action of wind force, the kinetic energy of the wind is converted into mechanical energy of a wind wheel shaft, and the generator is driven by the wind wheel shaft to rotate to generate power.

In the prior art, when the wind driven generator encounters strong wind, the speed limiting device is easily overheated in the speed limiting process, so that the wind driven generator loses the speed limiting capacity, the fan blades of the wind driven generator are damaged, and even safety accidents are caused.

Disclosure of Invention

The invention provides a speed limiting device for a wind driven generator, which aims to solve the problems of low heat resistance and poor speed limiting effect of the existing wind driven generator.

In order to achieve the purpose, the invention adopts the following technical scheme:

a speed limiting device for a wind driven generator comprises: the device comprises a fixed head, fan blades, a rotating shaft, a protective shell, a controller, a brake disc, a telescopic rod and a brake plate;

the fan blades are connected with the fixing heads, the fixing heads are connected with the transmission shaft, and the transmission shaft penetrates through the protective shell and also penetrates through the brake disc positioned in the protective shell; the controller is fixed on the inner side of the protective shell and used for monitoring the rotating speed of the brake disc;

the protective shell is also internally provided with a telescopic rod and a brake plate; the brake plate is arranged aiming at the brake disc; the tail part of the telescopic rod is vertically fixed on the side wall of the protective shell, and the end part of the telescopic rod is vertically and fixedly connected with the brake plate.

Preferably, the present invention further comprises a balance bar; the balancing rods are arranged on two sides of the telescopic rod, the end parts of the balancing rods are vertically fixed on the brake plate, and the tail parts of the balancing rods are vertically fixed on the side wall of the protective shell.

Preferably, one side of the brake plate, which is close to the brake disc, is connected with a wear pad.

Preferably, the invention also comprises a short shaft, a tachometer wheel and a clamping plate; wherein one side of the controller close to the brake disc is provided with a clamping plate, one side of the clamping plate far away from the controller is provided with a short shaft, and the short shaft is provided with a speed measuring wheel contacting the brake disc; the tachometer wheel is used for monitoring the rotating speed of the brake disc when the brake disc rotates.

Preferably, a cooler is arranged on one side of the brake plate, which is far away from the wear-resistant pad.

Preferably, the semiconductor refrigerating sheet is arranged in the cooler.

Preferably, the inside condenser pipe that is provided with of brake block, the condenser pipe is worn out the brake block and is connected in the cooler below.

Preferably, a temperature sensor is mounted on the brake plate on the side of the cooler.

Preferably, the temperature sensor is electrically connected with the cooler.

Preferably, the brake disc is provided with a through hole.

The invention has the beneficial effects that:

1. the telescopic link promotes the brake block, promotes brake block and brake disc contact, fixes wearing pad and the friction of brake disc on the brake block to the restriction brake disc is with the rotation of axis of rotation, with this restriction aerogenerator's rotational speed, installs the balancing pole in the telescopic link both sides, can be when the telescopic link promotes the brake block, keeps the balance of brake block, makes the degree of wear of wearing pad keep unanimous.

2. When the brake disc rotates along with the rotating shaft and the speed is faster and faster, the brake disc drives the speed measuring wheel to rotate due to the fact that the speed measuring wheel is in contact with the brake disc, when the speed measuring wheel detects that the rotating speed of the brake disc and the rotating shaft exceeds a set value, the controller can control the telescopic rod to push the brake disc to reduce the speed of the brake disc, the speed measuring wheel is clamped by the clamping plate, and the other end of the clamping plate is fixed on the controller to prevent the speed measuring wheel from falling off.

3. Install desuperheater and temperature sensor on the brake block, and the inside condenser pipe that still is provided with of brake block, when brake block and brake disc friction, temperature sensor keeps monitoring, when detecting the brake block high temperature, the desuperheater begins to work, and the semiconductor refrigeration piece of installing in the desuperheater cools down the comdenstion water in the condenser pipe, and the comdenstion water flows in the condenser pipe afterwards, cools down brake block and abrasion pad, improves abrasion pad's life.

4. The brake disc is provided with the through hole, so that the heat dissipation of the wear-resistant pad is facilitated when the brake plate and the brake disc are subjected to friction deceleration, and the service life of the wear-resistant pad is prolonged.

In conclusion, the device can improve the heat resistance of the speed limiting device in a strong wind state, avoids the phenomenon that the speed limiting device loses effect due to overheating, has strong speed limiting capacity, and improves the practical performance of the device.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front sectional structural view of the present invention.

Fig. 2 is a schematic top sectional structure view of the present invention.

FIG. 3 is a schematic cross-sectional view of the present invention.

FIG. 4 is a schematic side view of the braking vane of the present invention.

FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention.

Reference numbers in the figures: 1. a fixed head; 2. a fan blade; 3. a rotating shaft; 4. a protective shell; 5. a controller; 6. a brake disc; 7. a telescopic rod; 8. a balancing pole; 9. a temperature sensor; 10. a brake plate; 11. a wear pad; 12. a temperature reducer; 13. a semiconductor refrigeration sheet; 14. a condenser tube; 15. a through hole; 16. a minor axis; 17. a speed measuring wheel; 18. and (4) clamping the plate.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.

Referring to fig. 1-5, a speed limiting device for aerogenerator, including fixed head 1, flabellum 2, axis of rotation 3, protecting crust 4, 5 brake disc 6 of controller, telescopic link 7 and brake block 10, 2 fixed mounting of flabellum are on fixed head 1, 3 perpendicular to flabellum 2 fixed connection of axis of rotation are on fixed head 1, just 3 perpendicular through protecting crust 4 of axis of rotation, 5 fixed mounting of controller are in the protecting crust 4 inboards, brake disc 6 is circularly, just 3 perpendicular through brake disc 6 of axis of rotation, 7 afterbody vertical fixation of telescopic link is on 4 lateral walls of protecting crust, just 7 tip and the 10 fixed connection of brake block of telescopic link, 7 perpendicular to brake block 10 of telescopic link.

7 both sides of telescopic link are provided with balancing pole 8, 8 tip vertical fixation of balancing pole are on brake disc 10, and its afterbody vertical fixation is on the 4 lateral walls of protecting crust, brake disc 10 is close to 6 one sides of brake disc and is connected with wear pad 11, can promote brake disc 10 by telescopic link 7, promote brake disc 10 and brake disc 6 contact, wear pad 11 fixed on brake disc 10 rubs with brake disc 6 to restriction brake disc 6 and rotation of axis of rotation 3, with this rotational speed of restriction aerogenerator, install the balancing pole 8 in telescopic link 7 both sides, can be when telescopic link 7 promotes brake disc 10, keep the balance of brake disc 10, make the degree of wear pad 11 keep unanimous.

Controller 5 is close to brake disc 6 one side fixed mounting has clamping plate 18, clamping plate 18 is kept away from controller 5 one end and is run through and be provided with minor axis 16, just minor axis 16 vertically runs through tachometry wheel 17, tachometry wheel 17 and brake disc 6 contact, rotate along with axis of rotation 3 when brake disc 6, and the speed is when more and more fast, because tachometry wheel 17 and brake disc 6 contact, brake disc 6 is driving tachometry wheel 17 and is rotating, when tachometry wheel 17 detects brake disc 6 and 3 rotational speeds of axis of rotation and exceed the setting value, controller 5 will control telescopic link 7 and promote brake disc 10 speed reduction brake disc 6.

Brake block 10 is kept away from 11 one side of abrasion pad and is installed desuperheater 12, desuperheater 12 internally mounted has semiconductor refrigeration piece 13, brake block 10 is inside to be provided with condenser pipe 14, just condenser pipe 14 wears out brake block 10 and connects in desuperheater 12 below, the installation of 12 one side of desuperheater on the brake block 10 is temperature sensor 9 sometimes, just temperature sensor 9 and 12 electric connection of desuperheater, when brake block 10 and brake disc 6 friction, temperature sensor 9 keeps monitoring, when detecting brake block 10 high temperature, and desuperheater 12 begins to work, and the semiconductor refrigeration piece 13 of installing in desuperheater 12 is cooled down the comdenstion water in condenser pipe 14, and the comdenstion water flows in condenser pipe 14 afterwards, cools down brake block 10 and abrasion pad 11, improves abrasion pad 11's life.

The brake disc 6 is provided with the through hole 15, so that the heat dissipation of the wear-resistant pad 11 is facilitated when the brake plate 10 and the brake disc 6 are subjected to friction deceleration, and the service life of the wear-resistant pad 11 is prolonged.

The working principle is as follows: when the wind driven generator encounters strong wind, the strong wind blows the fan blades 2, the fan blades 2 drive the fixing head 1 and the rotating shaft 3 fixedly arranged on the fixing head 1 to rotate, the rotating shaft 3 drives the brake disc 6 to rotate, as the speed measuring wheel 17 is contacted with the brake disc 6, when the brake disc 6 rotates along with the rotating shaft 3 and the speed is faster and faster, the brake disc 6 drives the speed measuring wheel 17 to rotate, when the speed measuring wheel 17 detects that the rotating speeds of the brake disc 6 and the rotating shaft 3 exceed a set value, the controller 5 controls the telescopic rod 7 to push the brake disc 10 to decelerate the brake disc 6, the speed measuring wheel 17 is clamped by the clamping plate 18, the other end of the clamping plate 18 is fixed on the controller 5 to prevent the speed measuring wheel 17 from falling off, the balance rods 8 arranged on two sides of the telescopic rod 7 can keep the balance of the brake disc 10 when the telescopic rod 7 pushes the brake disc 10, so that the abrasion degree of the wear-resistant pad 11 is kept consistent, in the deceleration working process, install temperature sensor 9 on brake block 10 and keep monitoring, when detecting brake block 10 high-temperature, cooler 12 begins work, semiconductor refrigeration piece 13 installed in cooler 12 cools down the comdenstion water in condenser pipe 14, the comdenstion water flows in condenser pipe 14 afterwards, cool down brake block 10 and abrasion pad 11, improve abrasion pad 11's life, through-hole 15 has been seted up on brake disc 6, when brake block 10 and brake disc 6 friction deceleration, the abrasion pad 11 heat dissipation of being convenient for, improve abrasion pad 11's life.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.