CN214170726U - Wind generating set braking system - Google Patents

Abstract

The utility model relates to a wind power generation technical field specifically is a wind generating set braking system, which comprises a bod, the one end of organism is rotated and is connected with the impeller, fixedly connected with pivot on the impeller, the pivot is rotated and is connected in the organism, the inside of organism is equipped with the pivot connecting seat, gear box and generator, the pivot is rotated and is connected in the pivot connecting seat, the one end of pivot is connected with the gear box, the gear box is rotated with the axle of generator and is connected, still be connected with rotational speed sensor and speed reduction brake subassembly in the organism, speed reduction brake subassembly includes the speed reduction subassembly, brake subassembly and manipulation subassembly, rotational speed sensor cooperatees with the pivot, the rotational.

Description

Wind generating set braking system

Technical Field

The utility model relates to a wind power generation technical field specifically is a wind generating set braking system.

Background

The wind generating set comprises a wind wheel and a generator; the wind wheel comprises blades, a hub, a reinforcing member and the like; it has the functions of wind driven blade rotation to generate electricity, generator head rotation, etc. The wind power generation power supply comprises a wind generating set, a tower frame for supporting the generating set, a storage battery charging controller, an inverter, an unloader, a grid-connected controller, a storage battery pack and the like.

When the wind generating set generates electricity, the output electric frequency is ensured to be constant. The wind power generation system is very necessary for wind power grid-connected power generation and wind-solar hybrid power generation. To ensure the constant frequency of wind power, one way is to ensure the constant rotating speed of the generator, i.e. the constant speed and constant frequency operation way, because the generator is driven by the wind turbine through the transmission device to operate, the rotating speed of the wind turbine needs to be undoubtedly constant, and the way can influence the conversion efficiency of wind energy; the other mode is that the rotating speed of the generator changes along with the wind speed, and the constant frequency of the output electric energy is ensured by other means, namely, the variable-speed constant-frequency operation is realized.

At present, a singvalia 850kW unit and a vistas 850kW unit are controlled in a brake system control mode, when a wind turbine generator triggers a safety chain to stop emergently, the wind turbine generator brake system is immediately put into operation, the rotating speed of the wind turbine generator is high, sparks are easily generated during braking, and a unit fire disaster is caused.

Disclosure of Invention

An object of the utility model is to provide a wind generating set braking system to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wind generating set braking system, includes the organism, the one end of organism is rotated and is connected with the impeller, fixedly connected with pivot on the impeller, the pivot is rotated and is connected in the organism, the inside of organism is equipped with pivot connecting seat, gear box and generator, the pivot is rotated and is connected in the pivot connecting seat, the one end of pivot is connected with the gear box, the gear box is rotated with the axle of generator and is connected, still be connected with rotational speed sensor and speed reduction brake subassembly in the organism, speed reduction brake subassembly includes speed reduction subassembly, brake subassembly and manipulation subassembly, rotational speed sensor cooperatees with the pivot, the rotational speed sensor electricity is connected with the singlechip.

Preferably, the speed reduction subassembly includes brake disc one and checking cylinder one, a brake disc fixed connection is in the pivot, check cylinder one goes up fixedly connected with calliper one, a calliper fixed connection is at the organism inner wall, the lower extreme of calliper one is located one side of brake disc one, sliding connection has piston one in the checking cylinder, piston one is located the opposite side of brake disc one, equal fixedly connected with brake lining pad one on the lower extreme of calliper one and the piston one, all be connected with the pressure spring that resets through the connecting plate between the lower extreme of calliper one and the both sides wall of piston one.

Preferably, the brake assembly comprises a second brake disc and a second brake cylinder, the second brake disc is fixedly connected to the rotating shaft, a second caliper is fixedly connected to the second brake cylinder, the second caliper is fixedly connected to the inner wall of the machine body, the lower end of the second caliper is located on two sides of the second brake disc, a second piston is slidably connected to the second brake cylinder, the second piston is located on the other two sides of the second brake disc, a second brake pad is fixedly connected to the lower end of the second caliper and the second piston, and a second reset pressure spring is connected between the lower end of the second caliper and the two side walls of the second piston through a second connecting plate.

Preferably, the control assembly comprises a master cylinder and a driving mechanism, the master cylinder is connected with the first brake cylinder and the second brake cylinder, an electromagnetic valve is connected between the master cylinder and the second brake cylinder, and a piston rod of the master cylinder is connected with the driving mechanism.

Preferably, actuating mechanism passes through fixing base fixed connection inside the organism, actuating mechanism includes mount and driving motor, the equal fixed connection of mount and driving motor is on the fixing base surface, driving motor's output shaft fixedly connected with carousel, the surperficial one side fixedly connected with limit slide block of carousel, the upper end fixedly connected with slide bar of mount, sliding connection has the sliding sleeve on the slide bar, the one end of connecting rod one rotates on the sliding sleeve, the other end of connecting rod one rotates the one end that is connected with connecting rod two, the other end of connecting rod two rotates and connects on the fixing base, the slide opening has been seted up on the surface of connecting rod two, limit slide block sliding connection is in the slide opening, the upper end of sliding sleeve still is connected with the one end of push rod, the other end of push rod and the piston rod fixed connection of brake master cylinder.

Preferably, the single chip microcomputer is connected with the electromagnetic valve and a driving circuit of the driving motor.

Preferably, the upper end fixedly connected with photosensitive sensor of push rod, the inner wall fixed surface of organism is connected with infrared emitter, photosensitive sensor is located infrared emitter's top, photosensitive sensor is connected with the singlechip electricity.

Compared with the prior art, the beneficial effects of the utility model are that:

according to the wind generating set brake system, when the rotating speed is too high, the brake system executes a snubbing mode and a braking-loosening-braking mode until the rotating speed of the wind generating set is reduced to be below 500r/min, and then executes a complete braking action, so that the occurrence of fire accidents of the wind generating set caused by direct braking of the wind generating set can be effectively prevented; when the impeller rotates at a high speed, a driving motor is started through a single chip microcomputer, the driving motor drives a rotary table to rotate, the rotary table drives a connecting rod II and a connecting rod I through a limiting sliding block, so that a sliding sleeve reciprocates on a sliding rod, the sliding sleeve drives a piston rod of a brake master cylinder through a push rod, the brake master cylinder drives a piston in a brake cylinder I to be matched with a caliper I, and brake-loosening-brake operation is carried out on the brake disc I along with the reciprocating motion of the push rod, so that the rotating shaft is decelerated; when the rotating speed of the rotating shaft is reduced to a specified threshold value, the rotating speed sensor transmits a signal to the single chip microcomputer, and the single chip microcomputer controls the infrared transmitter to be started and simultaneously controls the electromagnetic valve to be opened; when the push rod drives the piston rod to be pushed in, the photosensitive sensor at the upper end of the push rod receives an optical signal sent by the infrared emitter and transmits the signal to the single chip microcomputer, the single chip microcomputer stops driving the motor to operate, the brake master cylinder drives the first piston and the second piston of the first brake cylinder and the second brake cylinder to extend out, and the first brake disc and the second brake disc are respectively matched with the first caliper and the second caliper to brake, so that the rotating shaft is stopped from rotating.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

in the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a machine body 1, an impeller 2, a rotating shaft 3, a rotating shaft connecting seat 4, a gear box 5, a generator 6, a photosensitive sensor 7, a rotating speed sensor 8, a singlechip 9, a brake disc I10, a brake cylinder I11, a caliper I12, a piston I13, a brake pad I14, a connecting plate I15, a reset compression spring I16, a brake disc II 17, a brake cylinder II 18, a caliper II 19, a piston II 20, a brake pad II 21, a connecting plate II 22, a reset compression spring II 23, a brake master cylinder 24, an electromagnetic valve 25, a 26 fixing frame, a 27 driving motor 28 rotating disc, a 29 limiting slide block, a 30 slide bar, a 31 slide sleeve, a 32 connecting rod I, a 33 connecting rod II, a 34 fixing seat, a 35 slide hole, a 36 push rod and a 37 infrared transmitter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a wind generating set braking system comprises a machine body 1, wherein one end of the machine body 1 is rotatably connected with an impeller 2, the impeller 2 is fixedly connected with a rotating shaft 3, the rotating shaft 3 is rotatably connected with the machine body 1, a rotating shaft connecting seat 4, a gear box 5 and a generator 6 are arranged inside the machine body 1, the rotating shaft 3 is rotatably connected in the rotating shaft connecting seat 4, one end of the rotating shaft 3 is connected with the gear box 5, the gear box 5 is rotatably connected with a shaft of the generator 6, a rotating speed sensor 8 and a deceleration braking assembly are further connected in the machine body 1, the deceleration braking assembly comprises a deceleration assembly, a braking assembly and an operation assembly, the rotating speed sensor 8 is matched with the rotating shaft 3, and the rotating speed sensor 8 is electrically connected with a single chip microcomputer 9; the control assembly comprises a brake master cylinder 24 and a driving mechanism, the brake master cylinder 24 is connected with the first brake cylinder 11 and the second brake cylinder 18, an electromagnetic valve 25 is connected between the brake master cylinder 24 and the second brake cylinder 18, and a piston rod of the brake master cylinder 24 is connected with the driving mechanism; the driving mechanism is fixedly connected inside the machine body 1 through a fixed seat 34, the driving mechanism comprises a fixed frame 26 and a driving motor 27, the fixed frame 26 and the driving motor 27 are both fixedly connected on the surface of the fixed seat 34, an output shaft of the driving motor 27 is fixedly connected with a rotary table 28, one side of the surface of the rotary table 28 is fixedly connected with a limiting slide block 29, the upper end of the fixed frame 26 is fixedly connected with a slide rod 30, the slide rod 30 is connected with a slide sleeve 31 in a sliding manner, one end of a first connecting rod 32 is connected on the slide sleeve 31 in a rotating manner, the other end of the first connecting rod 32 is connected with one end of a second connecting rod 33 in a rotating manner, the other end of the second connecting rod 33 is connected on the fixed seat 34 in a rotating manner, a slide hole 35 is formed in the surface of the second connecting rod 33, the limiting slide block 29 is connected in the slide hole 35 in a sliding manner, the upper end of the slide sleeve 31 is also connected with one end of a push rod 36, and the other end of the push rod 36 is fixedly connected with a piston rod of the master cylinder 24; the singlechip 9 is connected with the electromagnetic valve 25 and a driving circuit of the driving motor 27; when the rotating speed is too high, the braking system executes a snubbing mode and a braking-loosening-braking mode until the rotating speed of the unit is reduced to be below 500r/min, and then executes a complete braking action, so that the fire accident of the unit caused by the direct braking of the wind turbine can be effectively prevented.

The speed reduction assembly comprises a brake disc I10 and a brake cylinder I11, the brake disc I10 is fixedly connected to the rotating shaft 3, a caliper I12 is fixedly connected to the brake cylinder I11, the caliper I12 is fixedly connected to the inner wall of the machine body 1, the lower end of the caliper I12 is located on one side of the brake disc I10, a piston I13 is connected to the brake cylinder I11 in a sliding mode, the piston I13 is located on the other side of the brake disc I10, a brake pad I14 is fixedly connected to the lower end of the caliper I12 and the piston I13, and a reset pressure spring I16 is connected between the lower end of the caliper I12 and two side walls of the piston I13 through a connecting plate I15; when the impeller 2 is braked at a high speed, the driving motor 27 is started through the single chip microcomputer 9, the driving motor 27 drives the rotary table 28 to rotate, the rotary table 28 drives the connecting rod two 33 and the connecting rod one 32 through the limiting slide block 29, so that the sliding sleeve 31 reciprocates on the sliding rod 30, the sliding sleeve 31 drives the piston rod of the brake master cylinder 24 through the push rod 36, the brake master cylinder 24 drives the piston one 13 in the brake cylinder one 11 to be matched with the caliper one 12, and the brake-release-brake operation is carried out on the brake disc one 10 along with the reciprocating motion of the push rod 36, so that the rotating shaft 3 is decelerated.

The brake assembly comprises a second brake disc 17 and a second brake cylinder 18, the second brake disc 17 is fixedly connected to the rotating shaft 3, a second caliper 19 is fixedly connected to the second brake cylinder 18, the second caliper 19 is fixedly connected to the inner wall of the machine body 1, the lower end of the second caliper 19 is located on two sides of the second brake disc 17, a second piston 20 is connected to the second brake cylinder 18 in a sliding mode, the second piston 20 is located on the other two sides of the second brake disc 17, a second brake pad 21 is fixedly connected to the lower end of the second caliper 19 and the second piston 20, and a second reset pressure spring 23 is connected between the lower end of the second caliper 19 and two side walls of the second piston 20 through a second connecting plate 22; the upper end of the push rod 36 is fixedly connected with a photosensitive sensor 7, the inner wall surface of the machine body 1 is fixedly connected with an infrared emitter 37, the photosensitive sensor 7 is positioned above the infrared emitter 37, and the photosensitive sensor 7 is electrically connected with the singlechip 9; when the rotating speed of the rotating shaft 3 is reduced to a specified threshold value, the rotating speed sensor 8 transmits a signal to the single chip microcomputer 9, the single chip microcomputer 9 controls the infrared emitter 37 to be opened, and meanwhile the electromagnetic valve 25 is controlled to be opened; when the push rod 36 drives the piston rod to be pushed in, the photosensitive sensor 7 at the upper end of the push rod 36 receives an optical signal sent by the infrared emitter 37 and transmits a signal to the single chip microcomputer 9, the single chip microcomputer 9 stops driving the motor 27 to operate, at the moment, the brake master cylinder 24 drives the first piston 13 and the second piston 20 of the first brake cylinder 11 and the second brake cylinder 18 to extend out, and the first caliper 12 and the second caliper 19 are respectively matched to brake the first brake disc 10 and the second brake disc 17, so that the rotation of the rotating shaft 3 is stopped.

Principle of operation

When the impeller 2 rotates at a high speed, the brake system brakes, firstly, the driving motor 27 is started through the single chip microcomputer 9, the driving motor 27 drives the rotary table 28 to rotate, the rotary table 28 drives the second connecting rod 33 and the first connecting rod 32 through the limiting slide block 29, so that the sliding sleeve 31 reciprocates on the sliding rod 30, the sliding sleeve 31 drives the piston rod of the brake master cylinder 24 through the push rod 36, the brake master cylinder 24 drives the first piston 13 in the brake cylinder 11 to be matched with the first caliper 12, and the brake-release-brake operation is carried out on the first brake disc 10 along with the reciprocating motion of the push rod 36, so that the rotating shaft 3 is decelerated; when the rotating speed of the rotating shaft 3 is reduced to a specified threshold value, the rotating speed sensor 8 transmits a signal to the single chip microcomputer 9, the single chip microcomputer 9 controls the infrared emitter 37 to be opened, and meanwhile the electromagnetic valve 25 is controlled to be opened; when the push rod 36 drives the piston rod to be pushed in, the photosensitive sensor 7 at the upper end of the push rod 36 receives an optical signal sent by the infrared emitter 37 and transmits a signal to the single chip microcomputer 9, the single chip microcomputer 9 stops driving the motor 27 to operate, at the moment, the brake master cylinder 24 drives the first piston 13 and the second piston 20 of the first brake cylinder 11 and the second brake cylinder 18 to extend out, and the first caliper 12 and the second caliper 19 are respectively matched to brake the first brake disc 10 and the second brake disc 17, so that the rotation of the rotating shaft 3 is stopped.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. A wind generating set braking system comprises a machine body (1), wherein one end of the machine body (1) is rotatably connected with an impeller (2), and the wind generating set braking system is characterized in that a rotating shaft (3) is fixedly connected onto the impeller (2), the rotating shaft (3) is rotatably connected onto the machine body (1), a rotating shaft connecting seat (4), a gear box (5) and a generator (6) are arranged inside the machine body (1), the rotating shaft (3) is rotatably connected into the rotating shaft connecting seat (4), one end of the rotating shaft (3) is connected with the gear box (5), the gear box (5) is rotatably connected with a shaft of the generator (6), a rotating speed sensor (8) and a deceleration braking component are further connected into the machine body (1), the deceleration braking component comprises a deceleration component, a braking component and a control component, the rotating speed sensor (8) is matched with the rotating shaft (3), the rotating speed sensor (8) is electrically connected with a singlechip (9).

2. The wind generating set braking system of claim 1, the speed reducing assembly comprises a first brake disc (10) and a first brake cylinder (11), the first brake disc (10) is fixedly connected to the rotating shaft (3), a caliper I (12) is fixedly connected to the brake cylinder I (11), the caliper I (12) is fixedly connected to the inner wall of the machine body (1), the lower end of the first caliper (12) is positioned on one side of the first brake disc (10), a first piston (13) is connected in the first brake cylinder (11) in a sliding manner, the first piston (13) is positioned at the other side of the first brake disc (10), a first brake pad (14) is fixedly connected to the lower end of the first caliper (12) and the first piston (13), and a first reset pressure spring (16) is connected between the lower end of the first caliper (12) and two side walls of the first piston (13) through a first connecting plate (15).

3. The wind generating set braking system of claim 1, the brake component comprises a second brake disc (17) and a second brake cylinder (18), the second brake disc (17) is fixedly connected to the rotating shaft (3), a second caliper (19) is fixedly connected to the second brake cylinder (18), the second caliper (19) is fixedly connected to the inner wall of the machine body (1), the lower end of the second caliper (19) is positioned on two sides of the second brake disc (17), the second brake cylinder (18) is connected with a second piston (20) in a sliding manner, the second piston (20) is positioned at the other two sides of the second brake disc (17), the lower end of the second caliper (19) and the second piston (20) are fixedly connected with a second brake pad (21), and a second reset pressure spring (23) is connected between the lower end of the second caliper (19) and two side walls of the second piston (20) through a second connecting plate (22).

4. The wind generating set braking system according to claim 1, characterized in that the control assembly comprises a master brake cylinder (24) and a driving mechanism, the master brake cylinder (24) is connected with the first brake cylinder (11) and the second brake cylinder (18), a solenoid valve (25) is connected between the master brake cylinder (24) and the second brake cylinder (18), and a piston rod of the master brake cylinder (24) is connected with the driving mechanism.

5. The wind generating set braking system according to claim 4, wherein the driving mechanism is fixedly connected inside the machine body (1) through a fixing seat (34), the driving mechanism comprises a fixing frame (26) and a driving motor (27), both the fixing frame (26) and the driving motor (27) are fixedly connected to the surface of the fixing seat (34), an output shaft of the driving motor (27) is fixedly connected with a rotating disc (28), one side of the surface of the rotating disc (28) is fixedly connected with a limiting sliding block (29), the upper end of the fixing frame (26) is fixedly connected with a sliding rod (30), the sliding rod (30) is slidably connected with a sliding sleeve (31), the sliding sleeve (31) is rotatably connected with one end of a first connecting rod (32), the other end of the first connecting rod (32) is rotatably connected with one end of a second connecting rod (33), the other end of the second connecting rod (33) is rotatably connected to the fixing seat (34), a sliding hole (35) is formed in the surface of the second connecting rod (33), the limiting slide block (29) is connected into the sliding hole (35) in a sliding mode, the upper end of the sliding sleeve (31) is further connected with one end of a push rod (36), and the other end of the push rod (36) is fixedly connected with a piston rod of the brake master cylinder (24).

6. The wind generating set braking system according to claim 1, wherein the single chip microcomputer (9) is connected with a solenoid valve (25) and a driving circuit of a driving motor (27).

7. The wind generating set braking system according to claim 5, wherein a photosensitive sensor (7) is fixedly connected to the upper end of the push rod (36), an infrared emitter (37) is fixedly connected to the surface of the inner wall of the machine body (1), the photosensitive sensor (7) is located above the infrared emitter (37), and the photosensitive sensor (7) is electrically connected with the single chip microcomputer (9).

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