KR100749508B1 - Sunlight reflective equipment applied to a solar-heat development system - Google Patents

Abstract

A sunlight reflecting apparatus for a solar power generator is provided to transfer sunlight condensed through a condensing unit to the inside of a heat changer stably for a long time. A sunlight reflecting apparatus for a solar power generator includes a condensing unit(100), a reflecting unit(200), a fixing member, and a sunlight reflection guide unit(400). The sunlight reflection guide unit includes driving members for horizontal and vertical rotation of the fixing member. The driving member for horizontal rotation includes an upper body, a connector, a shaft, a rotating portion, a driving motor, and a lower body. The connector connects the upper body to the reflecting unit. The connector is rotatably installed between the upper body and the reflecting unit. One end of the shaft is fixed to an end of the upper body. The rotating portion rotates the shaft. The driving motor transfers a power required to rotate the rotating portion. The lower body protects the shaft.

Description

Sunlight reflective equipment applied to a solar-heat development system}

1 is a view showing a conventional reflector arranged around a light collecting device of a solar power generation system;

FIG. 2 shows the reflecting range of each reflecting plate constituting a conventional reflector capable of correctly reflecting sunlight emitted from the sun toward a conventional condenser according to a predetermined time after sunrise, a predetermined time during noon, and a predetermined time before sunset. drawing,

Figure 3 is a schematic perspective view showing a solar reflector applied to the solar power system of the present invention,

Figure 4 is an enlarged perspective view of the main portion to enlarge the portion A of FIG.

Figure 5 is a side view showing a solar reflector applied to the solar power system of the present invention,

6 is a detailed configuration diagram showing in detail the light collecting portion of the configuration of FIG.

7a to 7c is a solar light reflector applied to the solar power generation system of the present invention according to the incident angle of the sunlight irradiated differently by the sun proceeding direction between sunrise and sunset as the horizontal rotational movement and vertical rotational movement This is a state diagram showing the process of controlling the reflection of sunlight toward the collecting lens.

<Code Description of Main Parts of Drawing>

100: condenser 110: condenser lens

120: body 130: reflector

140: heat absorbing film 200: reflecting portion

210: reflector 300: fixing member

310: fixed frame 320: fixed plate

400: sunlight reflection induction part 410: drive member for horizontal rotational movement

411: upper body 412: connector

413: shaft 414: rotating hole

415: drive motor for horizontal rotation movement 416: lower body

420: drive member for vertical rotational movement 421: drive motor for vertical rotational movement

422 screw 500 heat conversion unit

The present invention relates to a solar power generation system, and more particularly, to a solar reflector applied to a solar power generation system with a small installation area and maximized solar reflection efficiency.

In general, solar power generation system is a technology that converts solar energy into electrical energy, and the type of solar power generation system is a large scale (central receiver solar thermal electric power system) depending on the scale of solar power generation (hundreds of kW to several tens of MW). ), Mid-sized (hundreds to hundreds of kW) of distributed solar thermal electric power system, and small scale (several to hundreds of W) stand-alone system.

Among these, a large centralized system includes a reflector composed of a plurality of reflectors reflecting the irradiated sunlight, and a plurality of concentrated sunlight when a plurality of sunlight reflected from the reflector is concentrated in one place. A light condenser for condensing the light, and an energy conversion device for generating steam by sunlight condensed by the light concentrating device and concentrated at a high temperature, and driving electric turbines through the generated steam.

Since the solar power generation system to which the centralized system is applied has low energy density of solar heat and changes in season and time, the condensing technology for condensing a plurality of sunlight reflected from the reflector toward the condenser is most important.

The solar power generation scale is a large scale, Figure 1 is a view showing a conventional reflector arranged around the light collecting device of the solar power generation system.

As shown in the drawing, a conventional reflector includes a plurality of reflecting plates arranged as an annular band around the concentrator so that the reflected sunlight can be incident toward the condenser as much as possible. The annular band has a structure arranged as if it is surrounded by layers.

At this time, each of the reflectors are arranged in a state inclined at a unique angle, the reason for being arranged at a unique angle in this way is because the sun's altitude (spatial coordinates) according to the direction of the sun, the direction in which the sun moves from sunrise to sunset This is because the incident light of the sunlight irradiated to each reflecting plate is different depending on the altitude of the sun.

For this reason, the conventional reflector is to allow the high-temperature concentrated sunlight to be reflected toward the light concentrator according to each altitude where the sun is located from sunrise to sunset for large-scale solar power generation.

However, the conventional condensing device applied to the solar thermal power generation system focuses on the condensing device so that even if the incident angle of the irradiated sunlight is changed in accordance with the solar traveling direction from sunrise to sunset, the hot concentrated sunlight is always reflected toward the condenser. Since a plurality of reflecting plates should be installed like an annular band, there is a problem in that the installation area becomes huge.

Referring to FIG. 2, the reflector group belonging to the first incident sunlight reflecting range RS1 is inclined at a unique angle so that the sunlight irradiated for a predetermined time after sunrise is reflected toward the condenser 1 when the sun is reflected. The reflector group belonging to the second incident solar reflection range RS2 is inclined at a unique angle so that the sunlight irradiated for a certain period of time during the midday sun is reflected toward the condenser 1 when the sun is reflected. The reflector group belonging to the third incident light reflection range RS3 is inclined at a unique angle so that the sun light irradiated for a predetermined time before sunset can be reflected toward the light concentrator 1 when the sun is reflected. It is in a deployed state.

As a result, when the sun moves in the advancing direction for a predetermined time after sunrise, the sunlight irradiated toward the incident sunlight reflecting range RS1 is correctly reflected toward the condenser 1, but the remaining incident sunlight reflecting ranges RS2 and RS3 The other reflector groups belonging to the light reflect toward the other side than the light collecting device 1 side.

Thereafter, when the predetermined time passes after sunrise, the altitude of the sun is also increased to move to the middle of the midday, and thus the incident sunlight reflection range is also the second incident incident light at the first incident sunlight reflection range RS1. The solar light is moved toward the solar light reflecting range RS2 to reflect the sunlight irradiated to the remaining incident light reflecting range to the other side than the light collecting device 1 side.

This applies equally to a predetermined time before sunset as the predetermined time passes during the midday, and as a result, the number of reflectors that correctly reflects the sunlight irradiated until sunset after sunrise is ¼ of the total number of reflectors. It also leads to a problem that the reflection efficiency is lowered to ˜⅓.

The present invention is to solve the problems of the prior art, an object of the present invention is to provide a solar reflector that is applied to a solar power generation system that requires a small installation area, the solar reflection efficiency is maximized.

As a technical concept for achieving the present invention, the solar light reflecting apparatus applied to the solar power generation system of the present invention includes a light collecting unit including a light collecting lens and a light reflecting unit toward the light collecting lens when the sunlight emitted after sunrise is reflected. A reflector provided with a plurality of reflectors inclined at a predetermined angle, a fixing member for fixing the reflecting member, and a back surface of the fixing member, which are fixed around an axis corresponding to a moving direction and a moving speed of the sun. A horizontal rotation movement driving member for horizontally moving the member, and a vertical rotation movement driving member provided in the horizontal rotation movement driving member to vertically move the fixed member, and reflected through a plurality of reflecting plates inclined at the predetermined angle. It is directed to a solar reflection induction unit which controls each of the sunlight to be reflected toward the condenser lens at all times. It is done.

The plurality of reflecting plates are arranged in a horizontal and vertical arrangement, but are arranged alternately between neighboring reflecting plates.

Among the configurations of the horizontal rotational movement driving member and the vertical rotational movement driving member for horizontal rotational movement forming the solar reflection induction part, the horizontal rotational movement driving member includes an upper body, a connector connecting the upper body and the reflecting part; A shaft having one end fixedly connected to an end of the upper body, the other end being rotatably installed at the bottom, a rotating hole installed at an outer circumference of the shaft, and rotating the shaft integrally with the rotating hole. It is provided with a drive motor for horizontal rotational movement to transmit the power required to rotate the pivoting hole, and a lower body of the cover chain to protect the shaft, the drive member for vertical rotational movement is rotatable in the lower portion of the upper body A screw for horizontally adjusting the length of the drive motor for vertical rotational movement is installed. End of the screw is fixed to the back of the fixing member is made, the connector is made so that the upper body and the reflector between the vertical rotation.

The condenser may include a condenser lens and two or more tubes of different diameters overlapping each other so that the length can be adjusted in multiple stages, and a body in which the condenser lens is superposed on the inner circumference of the smaller diameter tube of the two tubes; Nested at the periphery of the two or more tubes constituting the body has a width smaller than the inner diameter of the smaller diameter tube, the two or more polygonal tubes of different widths are overlapped, the length can be adjusted in multiple stages, the width of the two polygonal tube One end of the small polygonal tube is a heat absorbing film formed on the side wall of the heat conversion portion to block the open side of the polygonal tube of the two or more polygonal tube constituting the reflector plate fixed to the side of the condensing lens and the larger polygonal tube Is done.

The endothermic film may be used soot, which is a black amorphous micropowder material produced by incomplete combustion or thermal decomposition of an organic material.

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

Figure 3 is a schematic perspective view showing a solar reflector applied to the solar power system of the present invention, Figure 4 is an enlarged perspective view of the main portion enlarged portion A of Figure 3, Figure 5 is applied to the solar power system of the present invention Figure 6 is a side view showing a solar reflector, Figure 6 is a detailed configuration diagram showing the condensing portion in detail of the configuration of Figure 2, Figure 7a to Figure 7c is a view of the sunlight irradiated differently by the sun progress direction between sunrise and sunset According to the incident angle, the solar reflector applied to the solar power generation system of the present invention is a state diagram showing a process of controlling the solar light is reflected toward the condenser lens of the condenser while the horizontal rotation and vertical rotation movement.

As shown in the drawings, the solar reflector applied to the solar power generation system includes a light collecting part 100, a reflecting part 200, a fixing member 300, and a solar light reflecting part 400.

Here, the reflector 200 is composed of a plurality of reflecting plate 210, the arrangement of the individual reflecting plate 210 is the front of the sunlight reflected by the individual reflecting plate 210 when driving the solar power generation system after sunrise is reflected in front All the reflecting plates 210 are arranged in a horizontal and vertical arrangement so as to be focused toward the condenser lens 110 of the condenser 100 positioned, and are inclined at a unique angle and fixed according to each position.

In addition, the reflecting plates 210 arranged in a horizontal and vertical arrangement are arranged so that neighboring reflecting plates alternate with each other to provide a drive in a state in which the wind resistance is minimized.

In addition, the size of each reflecting plate 210 has a size of about 1200 × 1200 (mm) in order to generate a large amount of power, the number is also preferably about 100, which is, depending on the amount of power generation degree of the size And it can be used by selectively applying the increase and decrease of the number.

The fixing member 300 is a device for fixing the reflecting unit 200, the fixing frame 310 is fixed to each reflecting plate 210 constituting the reflecting unit 200, the fixing frame 310 is installed It consists of a fixed plate (320).

The solar reflection induction unit 400 is fixed to the reflection unit 200 to be rotatable to move the reflection unit 200 in a horizontal rotation around the upper body 411 to the reference axis in accordance with the movement of the sun, and linked with this As the vertical rotational movement to control each of the sunlight reflected through the plurality of reflecting plates 210 inclined at the predetermined angle to be reflected toward the condenser lens 110 of the condenser 100, the fixing member ( The horizontal rotating movement driving member 410 for moving the horizontal rotation 300 and the horizontal rotational movement driving member 410 is provided with a vertical rotational movement driving member 420 for vertically rotating the fixing member 300.

Here, the driving member 410 for the horizontal rotation movement is connected to the upper body 411 and the reflector 200 by the connector 412, the connected reflector 200 is rotatably connected up and down. And the upper end of the shaft 413 is fixedly connected to the lower end of the upper body 411, the upper end of the shaft 413 is installed to be rotatable. In addition, the outer periphery of the shaft 413 is provided with a rotating hole 414 to rotate the upper body 411 fixedly connected to the shaft 413, the rotating hole 414 is a drive motor 415 for horizontal rotational movement It is connected to transmit the power required to rotate the rotating hole 414.

Here, the rotation hole 414 may use a variety of gears that can axially rotate the shaft 413, such as a worm / worm gear. Then, the shaft 413 is embedded in the lower body 416 to protect the shaft 413.

The vertical rotational movement driving member 420, the screw 422 to horizontally adjust the length to the vertical rotational movement driving motor 421 is rotatably installed on the lower side of the upper body 411, The end of the screw 422 has a structure fixed to the back of the fixing member 300.

As such, when the sun sets at sunset by the sun reflection induction unit 400 connected to the fixing member 300 fixing the reflecting unit 200, the predetermined direction of the sun (from the direction of the arrow shown in Fig. 7a) In view of the difference in the angle of incidence of the irradiated sunlight by varying the altitude depending on the altitude varies depending on the altitude, according to the upper body 411 to the reflector 200 made of a plurality of reflecting plates 210 at a speed corresponding to the speed of the sun The horizontally rotated in the direction and at the same time rotated up and down at the same time during the driving of the solar reflecting apparatus applied to the solar power generation system of the present invention, the solar light reflected by the individual reflecting plate 210 is always condensing lens of the condenser 100 Provide for reflection into 110.

Here, depending on the season, the sun rises in the daytime average sunrise time is 05:11, the sunset time is 19; 56, 14 hours 45 minutes is the daytime time, the winter solstice average sunrise time is 07; 43, Sunset time is 17; 17, 9 hours 34 minutes is the day time, the difference between the normal day time is 5 hours 11 minutes on average as well as minute by day, but there is a difference, the drive member for vertical rotation movement ( The speed of the 420 and the drive member 410 for horizontal rotation movement is preferably set and driven daily.

At this time, since the daytime is provided by the Meteorological Agency until a few days afterwards, it is possible to smoothly use the solar reflector applied to the solar power generation system of the present invention in consideration of the daytime time without a hitch.

In addition to the speed setting of the above-described vertical rotational movement driving member 420 and horizontal rotational movement driving member 410, a separate cab is provided for various control such as driving of the solar power generation system of the present invention. In the equipped cab, various controls related to the solar power generation system of the present invention can be performed.

The light concentrator 100 includes a reflector 130 formed of a tube having a polygonal shape inside the body 120 so that when the reflected sunlight hits an inner wall, the reflected sunlight does not spread again. In order to maximize the heat absorption efficiency when the reflected sunlight is absorbed through the heat conversion unit 500 again, the heat absorption film 140 is formed on the outer wall of the heat conversion unit 500.

At this time, the endothermic film 140 is formed when the common fluorine is used at a high temperature of 850 ℃ or more often burns during use, so it is more stable than the black amorphous micropowder material when fluorine is coated at a high temperature of 850 ℃ or more It is preferable to use it as the heat absorption film 140.

Here, the fine powder material is produced by incomplete combustion or thermal decomposition of organic matter, so-called soot. The formation of such a soot layer is possible by burning pine (or oak, etc.) for a long time on the outer wall of the heat conversion part 500 to which the reflected sunlight is contacted again.

In addition, since the amount of solar radiation is worse than that of spring or summer in the winter, the length of the sunlight that is refracted through the body 120 constituting the light collecting part 100 reaches the outer wall of the heat conversion part 500. In order to shorten the body 120, two or more tubes of different diameters are superimposed so that the length can be adjusted in multiple stages, and the reflector plate 130 also includes two or more polygonal tubes having different widths, thereby providing the body seasonally. It can be used while adjusting the length accordingly.

7A to 7C are exemplary embodiments of the present invention, referring to FIG. 7A, since the sunlight emitted from the sun S10 after sunrise is irradiated from the east to the west at a low altitude, the reflector 200 is configured in advance. The reflection direction in which the front surface of each of the reflecting plates 210 is located is located in the direction looking east. In addition, the total reflection angle of the reflector 200 is set to be substantially perpendicular (about 15 ° off) from the ground.

The individual reflecting plates 210 having such a reflection direction and the total reflection angle also have the condensing lens 110 of the light condenser 100 having sunlight irradiated in advance upon the individual reflection angle when the solar power generation system is operated after sunrise. It is inclined at a unique angle and fixed so that it can be reflected toward).

In addition, since the Meteorological Agency previously recognized the daytime, which is the time between sunrise and sunset, the driving member for vertical rotational movement corresponding to the solar traveling speed in consideration of the operating time of the solar power system from sunrise to sunset and the corresponding daytime ( The solar power generation system of the present invention is driven in a state in which the driving speed of the driving member 410 and the horizontal rotating movement driving member 410 is set.

In response to the traveling direction and the traveling speed of the solar power generation system, the reflector 200 is driven in the clockwise direction (westward direction) from the east direction based on the upper body 411 by the driving of the horizontal rotating movement driving member 410. Horizontal rotational movement, and in conjunction with this, the total reflection angle of the reflector 200 is also divided by the vertical rotational movement driving member 420 toward the ground in a state substantially perpendicular to the ground, thereby changing the movement of sunlight moving in the same place. It moves in correspondence with the angle of incidence.

In addition, since the plurality of reflecting plates 210 constituting the reflecting unit 200 are disposed to be alternated between the reflecting plates adjacent to each other, it is possible to operate while minimizing the resistance of the wind.

Referring to FIG. 7B, the suns S20 moving from east to west at noon are located in the middle of the sky so that the sunlight irradiated from the sun S20 is irradiated vertically from top to bottom at the highest altitude.

At this time, the reflector 200 continues to move horizontally in the clockwise direction (westward direction) according to the speed of the sun. At this time, the front direction of the reflector 200 moves horizontally to the extent that it faces the condenser. In conjunction with this, the total reflection angle of the reflector 200 is also largely divided toward the ground (approximately about 45 °), so that the sunlight emitted from the top to the bottom is always reflected toward the light collector 100.

Afterwards, the sun moves to the west while lowering again at the highest altitude, and the reflector 200 also continues clockwise in accordance with the speed of the sun in the direction facing the condenser 100 in response to the movement speed of the sun. In the horizontal direction of movement (westward direction) and at the same time, the reflection portion 200, which is largely divided toward the ground, is again rotated to be perpendicular to the ground.

Referring to FIG. 7C, sunlight irradiated from the sun S30 before sunset is again irradiated from west to east at low altitude.

At this time, the front of the reflector 200 is seen in the west direction according to the speed of the sun, and in conjunction with this, the total reflection angle of the reflector 200 is also erected perpendicular to the ground (about 15 ° off).

As described above, the solar reflector applied to the solar power generation system of the present invention has an installation area of ¼ compared to the conventional reflector since the entire reflecting part is within the reflecting range of sunlight to be irradiated as described with reference to FIGS. 7A to 7C. Not only has the advantage of being smaller, but also because the solar reflector of the present invention in accordance with the moving sun also has the advantage of maximizing the reflection efficiency.

In addition, the outer wall of the heat conversion part 500 which blocks the body 120 constituting the light collecting part 100 is an endothermic film which is a black amorphous micropowder material (aka soot) that is stable and does not burn even at a high temperature of 850 ° C. or longer. Since the 140 is formed, the endothermic efficiency is maximized stably for a long time even when the reflected sunlight is transmitted.

In addition, the body 120 has a reflector plate 330 made of a tube having a polygonal shape is inherent to provide the core point of the sunlight reflected from the body 120 to be reflected without spreading to reach the heat absorbing film 140 at a high temperature. To be available.

In addition, the body 120 and the reflector plate 330 can be adjusted in length in multiple stages in the case of a poor winter solar radiation can be used to adjust the length of the body 120 to the shortest to increase the temperature of sunlight even in winter Provide means.

As described above, the present invention not only has a smaller installation area of ¼ or less than the conventional solar reflector applied to the solar power generation system, but also maximizes the solar reflection efficiency.

In addition, when the high-temperature solar light collected through the light collecting unit is transferred to the heat conversion unit, there is also an effect of stably transmitting the inside of the heat conversion unit for a long time.

In addition, there is an effect that reflects the nucleus of the solar light does not spread when the nucleus of the sunlight incident into the light collecting portion hit the inner wall and reflected.

In addition, it is possible to adjust the length of the body of the light concentrator according to the intensity of the solar radiation, there is also an effect to increase the temperature of the solar light in the winter to pass to the heat converter.

Claims (5)

The condenser 100 including the condenser lens 110 and a plurality of reflectors 210 inclined at a predetermined angle to reflect toward the condenser lens 110 of the condenser 100 when the sun light emitted after sunrise are reflected Two reflecting parts 200, a fixing member 300 for fixing the reflecting part 200, and the back surface of the fixing member 300, the axis corresponding to the moving direction and the moving speed of the sun. Horizontal rotating movement driving member 410 for horizontally moving the fixed member 300, the horizontal rotational movement driving member 410 is provided in the vertical rotational movement driving member for vertically rotating the fixed member 300 Solar power generation including a solar reflection induction unit 400 for controlling each of the sunlight reflected through the plurality of reflecting plates 210 inclined at a predetermined angle to be reflected toward the condensing lens 110, including (420). State applied to the system In constructing the positive light reflector, Of the configuration of the horizontal rotational movement driving member 410 and the vertical rotational movement driving member 420 to move the horizontal rotation constituting the solar reflection induction unit 400, The horizontal rotating movement driving member 410, the upper body 411, the connector 412 for connecting the upper body 411 and the reflector 200, and one end of the upper body 411 A shaft 413 fixedly connected to an end and rotatably installed at the other end of the other end, a rotating hole 414 installed at an outer circumference of the shaft 413 to rotate the shaft, and the rotating hole ( 414 is integrally formed with a drive motor 415 for horizontal rotational movement to transmit the power required to rotate the rotating hole 414, and a lower body 416 for the cover chain protecting the shaft 413, The vertical rotational movement driving member 420, the screw 422 to horizontally adjust the length to the vertical rotational movement driving motor 421 is rotatably installed on the lower side of the upper body 411, End of the screw 422 is fixed to the back of the fixing member 300 is made, The connector 412 is a solar reflector applied to the solar power system, characterized in that the upper body (411) and the reflecting portion 200 is made to be rotated vertically. The method of claim 1, The plurality of reflecting plates 210 are arranged in a horizontal and vertical arrangement, the solar reflector is applied to a solar power system, characterized in that alternately arranged between the adjacent reflecting plates. delete The method according to any one of claims 1 to 2, The light collecting unit 100, A condenser lens 110, Two or more tubes of different diameters are overlapped and adjustable in multiple stages, the body 120 in which the condenser lens 110 is superposed on the inner circumference of the smaller diameter tube, and Of the two or more tubes constituting the body 120 to be superimposed on the inner circumference of the body 120 has a width smaller than the inner diameter of the smaller diameter tube, the width of the two or more polygonal tube is overlapped to adjust the length in multiple stages It is possible, and one side end of the polygonal tube of the narrow width of the two polygonal tube is fixed to the side of the condensing lens 110 and 130, Applied to the solar thermal power generation system, characterized in that made of a heat absorbing film 140 formed on the side wall of the heat conversion unit 500 to prevent the other side of the polygonal tube having a wide width of the two or more polygonal tubes constituting the reflector 130 Solar reflector. The method of claim 4, wherein The heat absorbing film 140 is a solar reflector applied to a solar power generation system, characterized in that the black amorphous micropowder material produced by incomplete combustion or thermal decomposition of organic matter.

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