KR20100127534A - Apparatus for generating by wind power - Google Patents

Abstract

PURPOSE: A wind power generation system is provided to enable natural cooling to be made using a heat pipe. CONSTITUTION: A wind power generation system comprises a coupler(4), a brake device(5), a generator(6) and a cooling device(10). The coupler receives the torque of the rotary shaft of a hub(2) of a blade(1) through a bearing and transfers it. The brake device can obtain the brake torque depending on the proximities of a magnet and a nonferrous metal, which are installed on the rotary shaft. The rotary shaft receives the torque through the coupler. The generator receives the torque of the rotary shaft through the brake device and generates the power. The cooling device transfers the heat from the generator to a heat sink, which is installed outside a nacelle housing, by the heat pipe.

Description

Horizontal wind power generation system {APPARATUS FOR GENERATING BY WIND POWER}

The present invention relates to a horizontal wind power generation system, and in particular, by installing a natural cooling device using a heat pipe and a non-contact magnet brake device, a horizontal wind power that can maintain power generation while maintaining natural power and braking with proper torque even in strong winds. It relates to a power generation system.

The structure of a horizontal wind generator of 50kW or more in general is a rotor (a hub device for fixing wings and wings) and a generator that generates electric power by receiving the rotational force of the rotor.

 However, this alone does not constitute a wind generator and requires a brake system for protection of the rotor in strong winds and a forced circulation cooling device for heat dissipation generated by the generator.

However, the brake device used in general wind generators is a padded contact brake device. If the brake is continuously braked in strong winds, the brake device may be worn out due to the friction of the pads. This leads to an increase in repair costs.

In addition, in the horizontal wind power generator, a cooling device for heat dissipation of the generator should be applied. The heat dissipation fin may be simply connected to the generator body to form an air circulation flow path for natural cooling. There is a disadvantage that it does not cool properly in wind turbines of 50kW or more because of poor transmission characteristics to the radiating fins.

In addition, the forced circulation cooling device for heat dissipation transfers the heat generated from the generator through the coolant or the coolant, and the coolant or the coolant is forced to the radiator by the pump and cooled to the fan to cool the heat transferred to the radiator. As it is composed of complex mechanical and electrical devices such as forced cooling device, the failure rate of the cooling oil circulation pump or fan device is high.In the event of a failure, the power generation efficiency decreases due to the stop of the generator and the separate power for the operation of the mechanical and electrical devices There was a disadvantage that it was necessary.

An object of the present invention is to provide a horizontal wind power system applying a natural cooling device using a magnet brake and heat pipes and heat radiation fins to solve the above problems.

The present invention provides a horizontal wind power generation system having a cooling device that has a low failure rate and does not require a separate power source, as a natural cooling device using a heat pipe and a heat dissipation fin has a very simple structure and no electric device. It is to.

In addition, the present invention employs a magnet brake device, but by applying a magnet brake device having a contact pad to which the brake function is added to the magnet brake device in the final contact, while braking to the appropriate braking torque by using the characteristics of the magnet brake even in strong winds It is to provide a horizontal wind power generation system that can maintain power generation.

The present invention transmits the heat generated from the generator to the heat dissipation fins in the shortest time through the internal heat conduction liquid of the heat pipe, and the heat dissipation fins are located outside the generator nussel and are naturally cooled by the naturally occurring wind from the outside. Apply.

The object of the present invention,

In the horizontal wind power generator to transmit the rotational force of the blade to the generator to produce power by the wind,

A coupler configured to receive the rotational force of the hub rotational shaft of the blade through a bearing and transmit the rotational force of the rotational shaft;

A brake device installed on the rotating shaft to receive the rotational force through the coupler;

A generator for generating electric power by receiving the rotational force of the rotating shaft through the brake device;

A cooling device transferring the heat generated from the generator by a heat pipe and cooling by a natural cooling method;

Consists of the hub and the nussel surrounding some components of the coupler, brake device, generator, cooling device in one housing,

The cooling device,

A heat pipe fixing bracket fixed to the body of the generator to receive heat;

A heat pipe inserted into the fixing pipe of the heat pipe, the heat pipe absorbing heat of the generator in contact with the surface of the generator, and dissipating thermal energy through the condensation unit at the other end;

It is connected to the condensation part of the other end of the heat pipe is fixed to the outside of the nussel, characterized in that consisting of a heat sink (Hit Sink) for dissipating heat by natural cooling by external wind.

The brake device

A rotating disc made of non-ferrous metal and fixed to the rotating shaft;

A pair of magnet disks having magnets arranged in an arc shape opposite to each other on both sides of the rotating disk, and slidably moved relative to the rotating shaft;

Brake pads attached to the pair of magnet disks and the rotating disc to face each other;

Brake actuation means for moving in the direction of moving or spaced apart in the direction of close proximity of the pair of magnet disk to brake the rotary shaft,

The brake operating means,

A plurality of transfer bolts for screwing in opposite directions with respect to the pair of magnet disks so as to transfer the pair of magnet disks in a direction close to each other or away from each other by rotation;

A motor for rotating the forward / reverse direction of any one of the transfer bolts for brake control;

In order to drive the feed bolt and the other feed bolt rotated by the motor at the same time in the same direction at the same time to install a sprocket on each of the transfer shaft and the rotation shaft of the motor and connected to all the sprockets and a chain for transmitting rotational power It is done.

In the present invention, in a horizontal wind power generator, while cooling the heat of a generator installed inside the nussel by a natural cooling method, it is to be naturally cooled as a non-powered cooling device using a heat pipe, and a non-contact magnet brake is installed on the power transmission shaft. By protecting the system, it is possible to generate power in a state where the brake is applied to be within a certain rotational speed in a strong wind. In addition, the natural cooling device using the heat pipe and the heat dissipation fin of the present invention is very simple in structure, there is no electrical device is characterized by low failure rate and does not require a separate power supply.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a horizontal wind power generation system having a cooling device according to the present invention.

As shown therein,

The vane 1 is fixedly installed on the hub 2, the rotation shaft of the hub 2 is rotatably installed by a bearing in the bearing housing 3, and the coupler 4 is installed to transmit the rotational power of the rotation shaft. The brake device 5 is installed on the rotary shaft connected to receive the rotational power by the coupler 4, and the generator 6 is installed on the rotary shaft connected through the brake device 5. 6, the cooling device 10 using the heat pipe 12 is installed, the hub (2), bearing housing (3), coupler (4), brake device (5), generator (6) and heat pipe ( 12 is installed in one housing to constitute a nucleus 7, wherein the nussel 7 is installed in the wind turbine tower so as to face the direction in which the wind blows by the yaw device 8. An anemometer 9 is provided at the rear end outer side of 7). Here, the means for controlling the brake device 5 by an anemometer, the driving device for driving the nucleus 7 in the direction of the wind, the driving means, the output means of electricity, the tower, etc. are applied to a conventional wind turbine system. Applicable apparatuses, controllers, etc. can be applied, and the description thereof is omitted in the present invention.

2 is a view for explaining the configuration of the cooling apparatus according to the present invention, as shown therein,

The heat pipe fixing bracket 11 for heat transfer is installed on the outer side of the generator 6, and the evaporation portion of the heat pipe 12 is inserted into and fixed to the heat pipe fixing bracket 11, and the heat pipe 12 is installed. Is configured to be fixed to the heat sink 13 which protrudes outside the housing of the nussel 7 and is installed outside the nussel 7.

3 is an explanatory view of a principle of a heat pipe for explaining the present invention. As shown in the drawing, the heat pipe 12 forms a pipe outer tube and has a sealing structure, and the inside of the pipe 101. Wick 102 is installed on the side wall, and the vapor space 103 formed on the inside of the wick 102, the bottom of the evaporator (12a) and the middle of the heat insulating portion (12b) and the top It is composed of a condensation unit 12c, the working medium 104 is filled.

It absorbs the external heat by the working medium 104 in the liquid state in the evaporator 12a, and vaporizes the vapor space 103 by vaporizing the working medium 104 in the liquid state which absorbed the external heat. Moved to the condenser 12c side through the heat discharge from the condensation unit 12c by heat exchange with the outside, and the working medium 104 that released the heat is liquefied while the evaporator 12a through the wick 102 again The cycle cycles to the side.

The working medium 104 is HCFC-22 (-40 ~ 30 ℃), HCFC-123 (0 ~ 100 ℃), HCFC-134a (-30 ~ 60 ℃), etc. are optionally used, the pipe 101 Copper is the most used material, stainless steel, tungsten, ceramics, etc. are used. The wick 102 uses a porous mesh such as a gold mesh, a foaming agent, a felt, a fiber, a sintered metal, and a slotted structure on the pipe wall, and the function of the wick 102 is to condense the working medium 104 by capillary action. 12c) returns to the evaporator 12a and distributes the working medium 104 in the liquid state to the entire evaporator 12a.

By using the characteristics of the heat pipe 12, in the present invention, the heat of the generator 6 is absorbed and transferred to the heat sink 13 installed outside the nussel 7 through the heat pipe 12, The heat sink 13 is configured to naturally cool by wind.

Therefore, the present invention configures and installs the cooling device 10 using the heat hype 12, which is lighter and does not occupy a lot of volume than a conventional cooling oil or cooling device that circulates cooling water, and does not require a large amount of heat radiation. The effect can be obtained, semi-permanent use is possible, and the natural cooling function does not require a power supply. In addition, compared to the configuration in which only the heat sink (heatsink) is installed in the generator, the heat transfer effect of the heat pipe absorbs heat from the generator and transfers it to the heat sink, which greatly improves the cooling efficiency.

As such, the natural cooling device using the heat pipe and the heat dissipation fin is characterized by a very simple structure and no electrical device, and thus has a low failure rate and does not require a separate power source.

The heat pipe transfers the heat generated from the generator to the heat dissipation fin in the shortest time through the internal heat conduction liquid, and the heat dissipation fin is located on the outside of the generator nucleus and is a natural cooling device by wind generated naturally from the outside.

Meanwhile, in the present invention, the brake device 5 is installed together with the cooling device 10 using the heat pipe, so that not only the system protection but also the electric power can be produced efficiently in a strong wind.

4 is a configuration diagram showing an example of a magnet brake device according to the present invention. As shown therein,

The brake device 5

A rotating disc 110 made of a non-ferrous metal and fixed to the rotating shaft 1a;

A pair of magnet disks (130a) having the rotating disc (110) in the center and arranged in an arc shape opposite to each other on both sides, the magnet disks (130a) being installed to be slidable with respect to the rotating shaft (1a);

Brake pads 111 and 131 attached to the pair of magnet disks 130a and the rotating disc 110 so as to face each other;

In order to brake the rotary shaft (1a) includes a brake actuating means for moving in the direction of moving or spaced apart from the direction of the pair of magnet disk 130a,

The brake operating means,

A plurality of transfer bolts 140 for screwing in opposite directions with respect to the pair of magnet disks 130a to transfer the pair of magnet disks 130a in a close or mutually distal direction by rotation. )Wow;

A motor 150 for rotating the forward / reverse one of the transfer bolts 140 for brake control;

In order to simultaneously drive the feed bolt and the other feed bolt rotated by the motor 150 in the same direction at the same time by installing the sprocket 151 to each feed bolt and the rotating shaft of the motor 150 and to connect all the sprockets 151 It is configured to include a chain 152 for transmitting rotational power.

The brake device 5 according to the present invention configured as described above is a magnet brake device, and when the brake operation is performed in a non-contact manner, the brake pad 111 provided on the rotating disc 110 and the pair of magnet disks 130a (closed) ( 131 stops in contact with each other while contacting each other.

Non-contact braking, when the motor 150 is driven to rotate the transfer bolt 140 in a direction in which the pair of magnetic disks (130a) are close to each other, is connected to the sprocket 151 by a chain 152 to the entire transfer bolt 140 Are rotated simultaneously in the same direction. Here, the transfer bolt is installed at least three points or more so that the rotational power can be smoothly transmitted by the chain.

When the transfer bolt 140 is rotated to slide in a direction in which the pair of magnet disks 130a are close to each other, the rotating disc 110 is caused by the eddy current phenomenon between the magnet 132 of the magnet disk 130a and the nonferrous metal rotating disk 110. The brake acts to prevent rotation of the wheel). By this function, the braking torque can be controlled by the proximity distance of the pair of magnet disks 130a, and the motor is adapted to take an appropriate braking torque according to the wind speed in order to prevent the generator 6 from rotating at a high speed due to strong winds. By driving the 150 to control the proximity distance of the magnet disk 130a. Such control can be controlled by experimentally obtaining the control amount of the motor according to the proximity distance of the magnetic disk to the wind speed and storing it in a table and controlling the motor according to the wind speed. The control amount of the motor may be controlled by detecting the position of the pair of magnet disks. In addition, when the wind turbine exceeds the power generation limit of the wind power generation system, when the magnetic disk of the upper phase is controlled in the direction of maximum contact for the stop control, the brake pads 111 and 131 may come into contact with each other and be stopped in a contact manner. do.

As described above, in the present invention, the brake device 5 applies the magnet brake device and installs contact brake pads together with the magnet brake device so that a complete stop is possible. Since the magnet brake device is a non-contact brake device, there is no need for periodic maintenance due to abrasion, so the brake can be continuously braked to generate a proper torque at high wind speeds. Therefore, the contact brake can not stop and generate power at high wind speeds. When applied, it is possible to generate electricity at high wind speed. In addition to the non-contact brakes, the magnet brake also has a final contact brake function that can force the generator to stop.

The stop function can minimize the abrasion caused by contact friction because the brake first operates after the first braking of the magnet brake.

1 is a block diagram of a horizontal wind power generation system having a cooling device according to the present invention

2 is a view for explaining the configuration of a cooling apparatus according to the present invention;

3 is an explanatory view of the principle of the heat pipe for explaining the present invention;

4 is a configuration diagram of a brake device according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: wing 2: hub

3: bearing housing 4: coupler

5: brake device 6: generator

7: Nussel 8: Key device

9: anemometer 10: cooling device

11: heat pipe fixing bracket

12 heat pipe 12a evaporation unit

12b: heat insulation 12c: condensation

101: pipe 102: week

103: steam space portion 110: rotating disk

111, 131: Brake Pads

132: magnet 130a: magnetic disk

140: transfer bolt 150: motor

151: sprocket 152: chain

Claims (3)

In the horizontal wind power generator to transmit the rotational force of the blade to the generator to produce power by the wind, A coupler configured to receive the rotational force of the hub rotational shaft of the blade through a bearing and transmit the rotational force of the rotational shaft; A brake device configured to obtain a braking torque according to the proximity of the magnet and the nonferrous metal installed on the rotating shaft to receive the rotational force through the coupler; A generator for generating electric power by receiving the rotational force of the rotating shaft through the brake device; And a cooling device configured to transfer the heat generated by the generator to a heat sink installed outside of the nussel housing by the heat pipe and to cool in a natural cooling manner. The method of claim 1, wherein the cooling device, A heat pipe fixing bracket fixed to the body of the generator to receive heat; A heat pipe inserted into the heat pipe fixing bracket to absorb heat of the generator, and to release thermal energy through the condensation part of the other end; And a heat sink connected to the condenser at the other end of the heat pipe and fixed to the outside of the nussel and configured to heat heat with natural cooling by external wind. The method of claim 1, wherein the brake device A rotating disc 110 made of a non-ferrous metal and fixed to the rotating shaft 1a; A pair of magnet disks (130a) having the rotating disc (110) in the center and arranged in an arc shape opposite to each other on both sides, the magnet disks (130a) being installed to be slidable with respect to the rotating shaft (1a); Brake pads 111 and 131 attached to the pair of magnet disks 130a and the rotating disc 110 so as to face each other; In order to brake the rotary shaft (1a) includes a brake actuating means for moving in the direction of moving or spaced apart from the direction of the pair of magnet disk 130a, The brake operating means, A plurality of transfer bolts 140 for screwing in opposite directions with respect to the pair of magnet disks 130a to transfer the pair of magnet disks 130a in a close or mutually distal direction by rotation. )Wow; A motor 150 for rotating the forward / reverse direction of any one of the transfer bolts 140 for brake control; In order to simultaneously drive the feed bolt and the other feed bolt rotated by the motor 150 in the same direction at the same time by installing the sprocket 151 to each feed bolt and the rotating shaft of the motor 150 and to connect all the sprockets 151 Horizontal wind turbine comprising a chain 152 for transmitting rotational power.

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