JP2010151934A - Optical positioning method and structure of sunlight collection system - Google Patents

Optical positioning method and structure of sunlight collection system Download PDF

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JP2010151934A
JP2010151934A JP2008327644A JP2008327644A JP2010151934A JP 2010151934 A JP2010151934 A JP 2010151934A JP 2008327644 A JP2008327644 A JP 2008327644A JP 2008327644 A JP2008327644 A JP 2008327644A JP 2010151934 A JP2010151934 A JP 2010151934A
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mirror
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sunlight
elliptical mirror
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JP5135201B2 (en
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Katsushige Nakamura
勝重 中村
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Mitaka Kohki Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/138—Water desalination using renewable energy
    • Y02A20/142—Solar thermal; Photovoltaics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical positioning method of a sunlight collection system, which facilitates work of positioning a fixed mirror and a movable mirror in accurate directions. <P>SOLUTION: A center S of turning of a laser irradiator 11 for freely irradiating an opposite directions with a laser light beam R is aligned with a first focus A of an elliptic mirror 1, so that an optical path of sunlight L passing the first focus A is detected by the laser light beam R. Consequently, the laser light beam R is used as a guide to determine a direction of a sensor 7 which controls directions of a fixed mirror 4 of the elliptic mirror 1 and a movable mirror 6 of a heliostat 5, whereby optical positioning of the sunlight collection system is facilitated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、太陽光集光システムの光学位置合わせ方法に関するものである。   The present invention relates to an optical alignment method for a sunlight collecting system.

太陽光を効率良く一点に集めて熱エネルギーに変え、その熱エネルギーにより、発電や、海水淡水化を行う技術が知られている。この種の太陽光集光装置は、所定の高さに設置された下向きの楕円鏡の第１焦点へ向けて、ヘリオスタットにより太陽光を反射し、第１焦点を通過して楕円鏡にて反射された太陽光を第２焦点に収束させる構造になっている。ヘリオスタットによる反射光の向きはヘリオスタットの土台に固定された不動のセンサーの角度により決定される。楕円鏡で反射される反射光の向きは楕円鏡を構成する複数のミラーの個々の角度により決定される（例えば、特許文献１参照）。
特開平１１−１１９１０５号公報 There is known a technique for efficiently collecting sunlight into one point and converting it into heat energy, and generating power and desalinating seawater using the heat energy. This type of sunlight concentrator reflects sunlight by a heliostat toward a first focal point of a downward-facing elliptical mirror installed at a predetermined height, and passes through the first focal point by an elliptical mirror. The reflected sunlight is converged to the second focus. The direction of the reflected light by the heliostat is determined by the angle of a stationary sensor fixed to the base of the heliostat. The direction of the reflected light reflected by the elliptical mirror is determined by the individual angles of the plurality of mirrors constituting the elliptical mirror (see, for example, Patent Document 1).
JP 11-119105 A

このように従来の技術にあっては、ヘリオスタットのセンサーの角度及び楕円鏡の固定ミラーの角度により、それぞれ反射光の向きが規定されるため、センサー及び固定ミラーの初期設定時にそれらの角度を正確に位置決めする作業が大変に重要である。しかし、現実的には有効な位置決め方法がなく、太陽光を実際に反射しながらセンサー及び固定ミラーの位置決めを試行錯誤により行っていたため、作業が大変に困難であった。   As described above, in the conventional technology, the direction of reflected light is defined by the angle of the sensor of the heliostat and the angle of the fixed mirror of the elliptical mirror, respectively. The work of positioning accurately is very important. However, in reality, there is no effective positioning method, and the positioning of the sensor and the fixed mirror is performed by trial and error while actually reflecting sunlight, so that the work is very difficult.

本発明は、このような従来の技術に着目してなされたものであり、センサー及び固定ミラーを正確な角度に位置決めする作業が容易な太陽光集光システムの光学位置合わせ方法を提供するものである。   The present invention has been made paying attention to such a conventional technique, and provides an optical alignment method of a solar light collecting system that facilitates an operation of positioning a sensor and a fixed mirror at an accurate angle. is there.

請求項１記載の発明は、所定の高さに設置された複数の固定ミラーにより形成された下向きの楕円鏡と、該楕円鏡の周囲の地上に設置されてセンサーにより太陽光を楕円鏡へ向けて反射させる可動ミラーを各々備えた複数のヘリオスタットとから成り、該ヘリオスタットの可動ミラーにて反射された太陽光の焦点を楕円鏡の第１焦点に合わせることで、楕円鏡にて反射した太陽光を楕円鏡の第２焦点に集光させることを特徴とする太陽光集光システムの光学位置合わせ方法であって、１本の直線状に沿って互いに反対方向へレーザー光を照射自在で且つ回動中心を中心に自由方向へ回動自在なレーザー照射器を、その回動中心が楕円鏡の第１焦点に一致するように支持し、一端から照射されるレーザー光により固定ミラー又は可動ミラー用センサーの一方の向きを位置決めし、その一方の向きを位置決めした状態のまま、他方の向きを位置決めすることを特徴とする。   According to the first aspect of the present invention, a downward-facing elliptical mirror formed by a plurality of fixed mirrors installed at a predetermined height, and sunlight is directed to the elliptical mirror by a sensor installed on the ground around the elliptical mirror. A plurality of heliostats each provided with a movable mirror that reflects the light, and the sunlight reflected by the movable mirror of the heliostat is reflected by the elliptical mirror by adjusting it to the first focal point of the elliptical mirror. An optical alignment method for a solar light collecting system, characterized by concentrating sunlight on a second focal point of an elliptical mirror, wherein laser light can be irradiated in opposite directions along one straight line. A laser irradiator that can freely rotate around the rotation center is supported so that the rotation center coincides with the first focal point of the elliptical mirror, and is fixed or movable by laser light emitted from one end. Mirror center Positioning one orientation Sir, it remains to position the one direction, characterized by positioning the other direction.

請求項２記載の発明は、第２焦点にレーザー光の位置を検出自在なシートを設置することを特徴とする。   The invention according to claim 2 is characterized in that a sheet capable of detecting the position of the laser beam is installed at the second focal point.

請求項３記載の発明は、センサーの背面にミラーを取付け、レーザー照射器のレーザー照射口の周囲にレーザー光の位置を検出自在なシートを設置したことを特徴とする。   The invention described in claim 3 is characterized in that a mirror is attached to the back surface of the sensor, and a sheet capable of detecting the position of the laser beam is provided around the laser irradiation port of the laser irradiator.

請求項４記載の発明は、レーザー照射器のレーザー照射口の周囲にレーザー光の位置を検出自在な検出器を設置したことを特徴とする。   The invention described in claim 4 is characterized in that a detector capable of detecting the position of the laser beam is provided around the laser irradiation port of the laser irradiation device.

請求項５記載の発明は、所定の高さに設置された複数の固定ミラーにより形成された下向きの楕円鏡と、地上に設置され太陽光を前記楕円鏡へ向けて反射させる可動ミラーを各々備えた複数のヘリオスタットとを具備する太陽光集光システムの光学位置合わせ構造であって、１つの直線状の光路を規定するように第１の方向およびその反対の第２の方向にレーザー光を照射し、前記規定された光路が前記楕円鏡の第１の焦点を通るように位置づけられるレーザー照射器と、地上に位置固定され、各ヘリオスタットの可動ミラーで反射された太陽光の光路の方向を検出する太陽センサーと、前記太陽センサーに位置固定され前記レーザー照射器から照射されたレーザ光を反射するミラーであって反射面が前記太陽センサーの主軸に垂直に位置づけられるものとを具備し、前記太陽センサーが太陽光の光路の方向を検出したときに前記太陽センサーの主軸と太陽光の光路が平行となることを特徴とする。   The invention according to claim 5 includes a downward-facing elliptical mirror formed by a plurality of fixed mirrors installed at a predetermined height, and a movable mirror that is installed on the ground and reflects sunlight toward the elliptical mirror. An optical alignment structure of a solar light collecting system comprising a plurality of heliostats, wherein laser light is emitted in a first direction and a second direction opposite thereto so as to define one linear optical path. A laser irradiator that illuminates and is positioned so that the defined optical path passes through the first focal point of the elliptical mirror, and a direction of the optical path of sunlight reflected on the movable mirror of each heliostat fixed on the ground A solar sensor that detects the position of the solar sensor and a mirror that is fixed to the solar sensor and reflects the laser light emitted from the laser irradiator, the reflective surface of which is positioned perpendicular to the main axis of the solar sensor ; And a what is, the optical path of the spindle and sunlight the solar sensor when the solar sensor detects the direction of the optical path of the sunlight, characterized in that the parallel.

請求項６記載の発明は、前記楕円鏡の第２焦点にレーザー光を検出するシートが設置されることを特徴とする。   The invention according to claim 6 is characterized in that a sheet for detecting laser light is installed at the second focal point of the elliptical mirror.

請求項７記載の発明は、前記レーザー照射器は前記直線状の光路上に位置づけられる回動軸の廻りに回動自在であることを特徴とする。   The invention according to claim 7 is characterized in that the laser irradiator is rotatable around a rotation shaft positioned on the linear optical path.

請求項１および５記載の発明によれば、互いに反対方向へレーザー光を照射自在なレーザー照射器の回動中心を、楕円鏡の第１焦点に合致させたため、レーザー光により第１焦点を通過する太陽光の光路を知ることができる。従って、このレーザー光をガイドにして、楕円鏡の固定ミラーの角度と、ヘリオスタットからのセンサーの角度を決めることにより、太陽光集光システムの光学位置合わせを容易に行うことができる。   According to the first and fifth aspects of the present invention, the rotation center of the laser irradiator capable of irradiating laser light in opposite directions is made to coincide with the first focus of the elliptical mirror, so that the laser beam passes through the first focus. You can know the light path of sunlight. Therefore, the optical alignment of the solar light collecting system can be easily performed by determining the angle of the fixed mirror of the elliptical mirror and the angle of the sensor from the heliostat using this laser light as a guide.

請求項２および６記載の発明によれば、第２焦点にレーザー光の位置を検出自在なシートを設置したため、シート上でレーザー光の位置を目視で観察することができ、固定ミラーの角度調整を容易に行うことができる。   According to the second and sixth aspects of the invention, since the sheet capable of detecting the position of the laser beam is installed at the second focal point, the position of the laser beam can be visually observed on the sheet, and the angle of the fixed mirror is adjusted. Can be easily performed.

請求項３記載の発明によれば、レーザー照射器のレーザー照射口の周囲に、センサーの背面に取付けられたミラーにて反射されたレーザー光の位置を検出自在なシートを設置したため、シート上でレーザー光の位置を目視で観察することができ、センサーの角度調整を容易に行うことができる。   According to the third aspect of the present invention, since the sheet capable of detecting the position of the laser beam reflected by the mirror attached to the back surface of the sensor is installed around the laser irradiation port of the laser irradiator, The position of the laser beam can be visually observed, and the angle of the sensor can be easily adjusted.

請求項４記載の発明によれば、レーザー照射器のレーザー照射口の付近に、センサーの背面に取付けられたミラーにて反射されたレーザー光の位置を検出自在な検出器を設置したため、シート上でレーザー光の位置を電気的に検出することができ、センサーの角度調整を容易に行うことができる。   According to the invention described in claim 4, since the detector capable of detecting the position of the laser beam reflected by the mirror attached to the back surface of the sensor is installed in the vicinity of the laser irradiation port of the laser irradiation device, Thus, the position of the laser beam can be detected electrically, and the angle of the sensor can be easily adjusted.

請求項７記載の発明によれば、２つのレーザー光の光軸はいずれも回動中心を通る１本の光路に一致するため楕円鏡に入射するあらゆる太陽光線を追跡することができる。   According to the seventh aspect of the present invention, since the optical axes of the two laser beams coincide with one optical path passing through the rotation center, it is possible to trace all the sunlight rays incident on the elliptical mirror.

（第１実施形態）
本発明の第１実施形態を図１〜図１３に基づいて説明する。図１は太陽集光装置を示している。中心には楕円鏡１が所定の高さ位置に下向き状態で設置されている。楕円鏡１の中央部には開口２が形成され、全体がタワー３にて支持されている。 (First embodiment)
1st Embodiment of this invention is described based on FIGS. FIG. 1 shows a solar concentrator. In the center, the elliptical mirror 1 is installed at a predetermined height in a downward state. An opening 2 is formed at the center of the elliptical mirror 1, and the whole is supported by a tower 3.

楕円鏡１は複数の固定ミラー４により形成されている。固定ミラー４はそれぞれ角度を調整可能な構造になっている。楕円鏡１は複数の固定ミラー４により構成される鏡面形状が楕円面の一部を構成しており、下方には第１焦点Ａと第２焦点Ｂが存在する。   The elliptical mirror 1 is formed by a plurality of fixed mirrors 4. Each of the fixed mirrors 4 has a structure capable of adjusting the angle. The elliptical mirror 1 has a mirror surface shape constituted by a plurality of fixed mirrors 4 constituting a part of the elliptical surface, and a first focal point A and a second focal point B exist below.

楕円鏡１の周囲には、多数のヘリオスタット５が設置されている。各ヘリオスタット５は、モーター駆動により向きを変化させることができる可動ミラー６を備えている。ヘリオスタット５には土台に位置固定されたセンサー７が設けられており、このセンサー７の向きにより可動ミラー６の向く方向（反射光の方向）が制御される。すなわち、可動ミラー６にて反射された太陽光Ｌの一部はセンサー７のスリット９から内部へ入り、内部の二分割センサー本体８に当たる。そして、センサー７内に進入した太陽光Ｌが常に二分割センサー本体８の中立位置に当たるように可動ミラー６の向きを制御する。このときにセンサー７内に進入した太陽光Ｌの光路とセンサ７の軸心（主軸）が平行となる。従って、可動ミラー６により反射される太陽光Ｌの向きはこのセンサー７の向きにより決定される。センサー７の向きは一度決めると不動であり、常に太陽光Ｌを同じ方向へ導く。センサー７の背面にはセンサー７の軸心に垂直な反射面をもつミラー１５が取付けられている。   A large number of heliostats 5 are installed around the elliptical mirror 1. Each heliostat 5 includes a movable mirror 6 whose direction can be changed by driving a motor. The heliostat 5 is provided with a sensor 7 fixed on the base, and the direction of the movable mirror 6 (direction of reflected light) is controlled by the orientation of the sensor 7. That is, a part of sunlight L reflected by the movable mirror 6 enters the inside through the slit 9 of the sensor 7 and hits the internal two-divided sensor body 8. Then, the direction of the movable mirror 6 is controlled so that the sunlight L entering the sensor 7 always hits the neutral position of the two-divided sensor body 8. At this time, the optical path of the sunlight L that has entered the sensor 7 and the axis (main axis) of the sensor 7 become parallel. Therefore, the direction of sunlight L reflected by the movable mirror 6 is determined by the direction of the sensor 7. Once the direction of the sensor 7 is determined, it does not move, and the sunlight L is always guided in the same direction. A mirror 15 having a reflecting surface perpendicular to the axis of the sensor 7 is attached to the back surface of the sensor 7.

このセンサー７の向きは初期設定時に太陽光Ｌを楕円鏡１の第１焦点Ａに導くように決定される。すなわち、太陽光Ｌが二分割センサー本体８の中立位置に当たると、可動ミラー６にて反射された太陽光Ｌが楕円鏡１の第１焦点Ａを通過するようになっている。第１焦点Ａを通過した太陽光Ｌは楕円鏡１にて反射され、そして第２焦点Ｂに集光する。集光した太陽光Ｌは熱変換装置１０に導入されて熱に変換され、発電等に利用される。   The orientation of the sensor 7 is determined so as to guide the sunlight L to the first focus A of the elliptical mirror 1 at the initial setting. That is, when the sunlight L hits the neutral position of the two-divided sensor body 8, the sunlight L reflected by the movable mirror 6 passes through the first focal point A of the elliptical mirror 1. The sunlight L that has passed through the first focal point A is reflected by the elliptical mirror 1, and is condensed at the second focal point B. The condensed sunlight L is introduced into the heat conversion device 10 and converted into heat, which is used for power generation or the like.

可動ミラー６はセンサー７により制御されるため、センサー７の向きが正確でないと、可動ミラー６で反射された太陽光Ｌは第１焦点Ａから外れることなり、結果的に第２焦点Ｂに集光しない。   Since the movable mirror 6 is controlled by the sensor 7, if the direction of the sensor 7 is not accurate, the sunlight L reflected by the movable mirror 6 deviates from the first focus A, and as a result, collects at the second focus B. Does not shine.

そのために、楕円鏡１を支持するタワー３の頂部には、レーザー照射器１１が上下動自在に支持されている。レーザー照射器１１はシャフト１２に支持され、そのシャフト１２を上下動自在に支持している。レーザー光Ｒは両端のレーザー照射口からレーザー光Ｒを１本の直線状で且つ反対側へそれぞれ照射することができる。一方の照射口の周辺にはリング状のシート１３が形成されている。   For this purpose, a laser irradiator 11 is supported on the top of the tower 3 that supports the elliptical mirror 1 so as to be movable up and down. The laser irradiator 11 is supported by a shaft 12 and supports the shaft 12 so as to be movable up and down. The laser beam R can be irradiated to the opposite side of the laser beam R in a straight line from the laser irradiation ports at both ends. A ring-shaped sheet 13 is formed around one irradiation port.

レーザー照射器１１はシャフト１２の下端に設けられたジンバル機構１４により、回動中心Ｓを中心にして上下方向へ回動させることができる。ジンバル機構１４自体もシャフト１２に対して水平方向で回動自在になっている。   The laser irradiator 11 can be rotated in the vertical direction about the rotation center S by a gimbal mechanism 14 provided at the lower end of the shaft 12. The gimbal mechanism 14 itself is also rotatable in the horizontal direction with respect to the shaft 12.

レーザー照射器１１の２つのレーザー光Ｒの光軸はいずれも回動中心Ｓを通る１本の仮想直線（光路）に一致する。すなわち、２つのレーザ光は直線状の光路を規定するように第１の方向（たとえばミラー１５から楕円鏡１に向かう方向）とその反対の第２の方向（たとえば楕円鏡１からミラー１５に向かう方向）に照射される。そして、このレーザー照射器１１を楕円鏡１の開口２から下降させ、その回動中心Ｓを第１焦点Ａに合致させると、第１焦点Ａを通過する光路を知ることができる。すなわち、レーザー照準器１１の２方向に照射されるレーザー光Ｒは第１焦点Ａおよび第２焦点Ｂを通る太陽光の１つの光路を規定することができる。従って、このレーザー光Ｒを利用して、楕円鏡１の固定ミラー４と、ヘリオスタット５の可動ミラー６を制御するセンサー７の向きを調整することができる。   The optical axes of the two laser beams R of the laser irradiator 11 coincide with one virtual straight line (optical path) passing through the rotation center S. That is, the two laser beams have a first direction (for example, a direction from the mirror 15 toward the elliptical mirror 1) and a second direction opposite thereto (for example, from the elliptical mirror 1 to the mirror 15) so as to define a linear optical path. Direction). Then, when the laser irradiator 11 is lowered from the opening 2 of the elliptical mirror 1 and the rotation center S thereof is matched with the first focus A, the optical path passing through the first focus A can be known. That is, the laser light R irradiated in the two directions of the laser sighting device 11 can define one optical path of sunlight passing through the first focus A and the second focus B. Therefore, the direction of the sensor 7 that controls the fixed mirror 4 of the elliptical mirror 1 and the movable mirror 6 of the heliostat 5 can be adjusted using the laser light R.

例えば、図１０に示すように、まずレーザー照射器１１からのレーザー光Ｒを１つのヘリオスタット５のセンサー７に当てる。センサー７の背面にはミラー１５が固定されているため、レーザー光Ｒはミラー１５で反射されて、レーザー照射器１１周辺に当たる。レーザー照射口の周囲にはリング状のシート１３が設けられているため、センサー７のミラー１５で反射されたレーザー光Ｒはシート１３に当たる。レーザー光Ｒがシート１３に当たる位置は、例えば赤い点として目視できるので、そのレーザー光Ｒの位置を確認しながら、該当するセンサー７の軸心の向きを正確に調整することができる。つまり、図１１のようにセンサー７の向きが正確でない場合も、図１２のように正確な向きに容易に調整することができる。   For example, as shown in FIG. 10, first, the laser light R from the laser irradiator 11 is applied to the sensor 7 of one heliostat 5. Since the mirror 15 is fixed on the back surface of the sensor 7, the laser light R is reflected by the mirror 15 and hits the periphery of the laser irradiator 11. Since a ring-shaped sheet 13 is provided around the laser irradiation port, the laser light R reflected by the mirror 15 of the sensor 7 strikes the sheet 13. Since the position where the laser beam R hits the sheet 13 can be viewed as a red dot, for example, the direction of the axis of the corresponding sensor 7 can be accurately adjusted while confirming the position of the laser beam R. That is, even when the orientation of the sensor 7 is not accurate as shown in FIG. 11, it can be easily adjusted to the exact orientation as shown in FIG.

次に、その状態のまま、図１３に示すように、レーザー照射器１１の反対側から照射されるレーザー光Ｒを楕円鏡１の対応する固定ミラー４に当てる。第２焦点Ｂにはシート１６を設置する。もし、レーザー光Ｒを当てた固定ミラー４の向きが正確であれば、レーザー光Ｒはシート１６上の第２焦点Ｂに合致した位置に当たる。レーザー光Ｒがシート１６に当たる位置は、前記同様に目視できるので、そのレーザー光Ｒの位置を確認しながら、該当する固定ミラー４の向きに正確に調整することができる。以上の作業を繰り返すことにより、全てのセンサー７及び固定ミラー４の向きを正確且つ容易に調整することができる。   Next, in this state, as shown in FIG. 13, the laser light R irradiated from the opposite side of the laser irradiator 11 is applied to the corresponding fixed mirror 4 of the elliptical mirror 1. A sheet 16 is placed at the second focal point B. If the direction of the fixed mirror 4 to which the laser beam R is applied is accurate, the laser beam R hits the position on the sheet 16 that matches the second focal point B. Since the position where the laser beam R hits the sheet 16 can be visually observed in the same manner as described above, the position of the laser beam R can be accurately adjusted in the direction of the corresponding fixed mirror 4. By repeating the above operations, the orientations of all sensors 7 and fixed mirrors 4 can be adjusted accurately and easily.

（第２実施形態）
図１４は、本発明の第２実施形態を示す図である。本実施形態は、前記第１実施形態と同様の構成要素を備えている。よって、それら同様の構成要素については共通の符号を付すとともに、重複する説明を省略する。 (Second Embodiment)
FIG. 14 is a diagram showing a second embodiment of the present invention. This embodiment includes the same components as those in the first embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

この実施形態のレーザー照射器１１は、一端からのレーザー光Ｒをハーフミラー１７を介して照射する。ハーフミラー１７は図示せぬフレームを介してレーザー照射器１１に固定されている。そして、ハーフミラー１７を通過した後、センサー７のミラー１５で反射されたレーザー光Ｒをハーフミラー１７を介して二分割式の検出器１８に導き、目視でなく、電気的にレーザー光Ｒの位置を知ることができる。検出されたレーザー光Ｒの位置に応じてセンサー７の向きを正しく調整することができる。電気的にレーザー光Ｒの位置を検出するため、センサー７の角度調整を更に容易に行うことができる。   The laser irradiator 11 of this embodiment irradiates a laser beam R from one end via a half mirror 17. The half mirror 17 is fixed to the laser irradiator 11 through a frame (not shown). Then, after passing through the half mirror 17, the laser light R reflected by the mirror 15 of the sensor 7 is guided to the two-divided detector 18 through the half mirror 17, and the laser light R of the laser light R is electrically detected rather than visually. You can know the position. The direction of the sensor 7 can be correctly adjusted according to the position of the detected laser beam R. Since the position of the laser beam R is electrically detected, the angle of the sensor 7 can be adjusted more easily.

本発明の第１実施形態に係る太陽集光装置を示す全体図。1 is an overall view showing a solar concentrator according to a first embodiment of the present invention. 楕円鏡の光路を示す図。The figure which shows the optical path of an elliptical mirror. ヘリオスタットを示す側面図。The side view which shows a heliostat. 楕円鏡を示す平面図。The top view which shows an elliptical mirror. 楕円鏡を示す拡大断面図。The expanded sectional view which shows an elliptical mirror. 正しい向きのセンサーを示す断面図。Sectional drawing which shows the sensor of correct orientation. 正しくない向きのセンサーを示す断面図。Sectional drawing which shows the sensor of incorrect orientation. レーザー照射器を示す斜視図。The perspective view which shows a laser irradiation device. レーザー照射器を示す側面図。The side view which shows a laser irradiation device. レーザー光をセンサーへ向けて照射した状態を示す断面図。Sectional drawing which shows the state which irradiated the laser beam toward the sensor. レーザー光を正しくない向きのセンサーへ向けて照射した状態を示す拡大図。The enlarged view which shows the state which irradiated the laser beam toward the sensor of the direction which is not correct. レーザー光を正しい向きのセンサーへ向けて照射した状態を示す拡大図。The enlarged view which shows the state which irradiated the laser beam toward the sensor of the right direction. レーザー光を固定ミラーへ向けて照射した状態を示す断面図。Sectional drawing which shows the state which irradiated the laser beam toward the fixed mirror. 本発明の第２実施形態に係るレーザー照射器を示す拡大図。The enlarged view which shows the laser irradiation device which concerns on 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１ 楕円鏡
４ 固定ミラー
５ ヘリオスタット
６ 可動ミラー
７ センサー
１１ レーザー照射器
１３ シート
１５ ミラー
１６ シート
１７ ハーフミラー
１８ 検出器
Ａ 第１焦点
Ｂ 第２焦点
Ｌ 太陽光
Ｒ レーザー光
Ｓ 回動中心 DESCRIPTION OF SYMBOLS 1 Elliptical mirror 4 Fixed mirror 5 Heliostat 6 Movable mirror 7 Sensor 11 Laser irradiator 13 Sheet 15 Mirror 16 Sheet 17 Half mirror 18 Detector A 1st focus B 2nd focus L Sunlight R Laser light S Rotation center

Claims (7)

所定の高さに設置された複数の固定ミラーにより形成された下向きの楕円鏡と、該楕円鏡の周囲の地上に設置されてセンサーにより太陽光を楕円鏡へ向けて反射させる可動ミラーを各々備えた複数のヘリオスタットとから成り、該ヘリオスタットの可動ミラーにて反射された太陽光の焦点を楕円鏡の第１焦点に合わせることで、楕円鏡にて反射した太陽光を楕円鏡の第２焦点に集光させることを特徴とする太陽光集光システムの光学位置合わせ方法であって、
１本の直線状に沿って互いに反対方向へレーザー光を照射自在で且つ回動中心を中心に自由方向へ回動自在なレーザー照射器を、その回動中心が楕円鏡の第１焦点に一致するように支持し、一端から照射されるレーザー光により固定ミラー又は可動ミラー用センサーの一方の向きを位置決めし、その一方の向きを位置決めした状態のまま、他方の向きを位置決めすることを特徴とする太陽光集光システムの光学位置合わせ方法。 Each includes a downward-facing elliptical mirror formed by a plurality of fixed mirrors installed at a predetermined height, and a movable mirror that is installed on the ground around the elliptical mirror and reflects sunlight toward the elliptical mirror by a sensor A plurality of heliostats, and the sunlight reflected by the movable mirror of the heliostat is focused on the first focus of the elliptical mirror so that the sunlight reflected by the elliptical mirror is the second of the elliptical mirror. A method for optical alignment of a solar light collecting system, characterized by focusing on a focal point,
A laser irradiator that can irradiate laser light in the opposite direction along one straight line and that can rotate in the free direction around the center of rotation. The center of rotation coincides with the first focal point of the elliptical mirror. It is characterized in that one direction of the fixed mirror or the movable mirror sensor is positioned by the laser beam irradiated from one end, and the other direction is positioned while the one direction is positioned. Optical alignment method for solar condensing system. 第２焦点にレーザー光の位置を検出自在なシートを設置することを特徴とする請求項１記載の太陽光集光システムの光学位置合わせ方法。   2. The optical alignment method for a solar light collecting system according to claim 1, wherein a sheet capable of detecting the position of the laser beam is installed at the second focal point. センサーの背面にセンサーの断面軸心と垂直なミラーを取付け、レーザー照射器のレーザー照射口の周囲にレーザー光の位置を検出自在なシートを設置したことを特徴とする請求項１又は請求項２記載の太陽光集光システムの光学位置合わせ方法。   A mirror perpendicular to the cross-sectional axis of the sensor is attached to the back of the sensor, and a sheet capable of detecting the position of the laser beam is installed around the laser irradiation port of the laser irradiator. The optical alignment method of the sunlight condensing system of description. センサーの背面にセンサーの断面軸心と垂直なミラーを取付け、レーザー照射器のレーザー照射口の付近にレーザー光の位置を電気的に検出自在な検出器を設置したことを特徴とする請求項１〜３のいずれか１項に記載の太陽光集光システムの光学位置合わせ方法。   A mirror perpendicular to the cross-sectional axis of the sensor is attached to the back surface of the sensor, and a detector capable of electrically detecting the position of the laser beam is installed near the laser irradiation port of the laser irradiation device. The optical alignment method of the sunlight condensing system of any one of -3. 所定の高さに設置された複数の固定ミラーにより形成された下向きの楕円鏡と、地上に設置され太陽光を前記楕円鏡へ向けて反射させる可動ミラーを各々備えた複数のヘリオスタットとを具備する太陽光集光システムの光学位置合わせ構造であって、
１つの直線状の光路を規定するように第１の方向およびその反対の第２の方向にレーザー光を照射し、前記規定された光路が前記楕円鏡の第１の焦点を通るように位置づけられるレーザー照射器と、
地上に位置固定され、各ヘリオスタットの可動ミラーで反射された太陽光の光路の方向を検出する太陽センサーと、
前記太陽センサーに位置固定され前記レーザー照射器から照射されたレーザ光を反射するミラーであって、反射面が前記太陽センサーの主軸に垂直に位置づけられるものとを具備し、
前記太陽センサーが太陽光の光路の方向を検出したときに前記太陽センサーの主軸と太陽光の光路が平行となることを特徴とする太陽光集光システムの光学位置合わせ構造。 A downward-facing elliptical mirror formed by a plurality of fixed mirrors installed at a predetermined height, and a plurality of heliostats each provided with a movable mirror installed on the ground and reflecting sunlight toward the elliptical mirror An optical alignment structure for a solar light collecting system
Laser light is irradiated in a first direction and a second direction opposite to the first direction so as to define one straight optical path, and the defined optical path is positioned so as to pass through the first focus of the elliptical mirror. A laser irradiator,
A solar sensor that is fixed on the ground and detects the direction of the light path of sunlight reflected by the movable mirror of each heliostat;
A mirror that is fixed to the sun sensor and reflects the laser light emitted from the laser irradiator, the reflecting surface being positioned perpendicular to the main axis of the sun sensor,
An optical alignment structure of a solar light collecting system, wherein a main axis of the solar sensor and a light path of sunlight are parallel when the sun sensor detects a direction of a light path of sunlight. 前記楕円鏡の第２焦点にレーザー光を検出するシートが設置されることを特徴とする請求項５記載の太陽光集光システムの光学位置合わせ構造。   6. The optical alignment structure of a solar light collecting system according to claim 5, wherein a sheet for detecting laser light is installed at the second focal point of the elliptical mirror. 前記レーザー照射器は前記直線状の光路上に位置づけられる回動軸の廻りに回動自在であることを特徴とする請求項５記載の太陽光集光システムの光学位置合わせ構造。   6. The optical alignment system for a solar light collecting system according to claim 5, wherein the laser irradiator is rotatable around a rotation axis positioned on the linear optical path.
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