WO2011072449A1 - 用传感器控制反射方向的定日镜装置 - Google Patents

用传感器控制反射方向的定日镜装置 Download PDF

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Publication number
WO2011072449A1
WO2011072449A1 PCT/CN2009/075668 CN2009075668W WO2011072449A1 WO 2011072449 A1 WO2011072449 A1 WO 2011072449A1 CN 2009075668 W CN2009075668 W CN 2009075668W WO 2011072449 A1 WO2011072449 A1 WO 2011072449A1
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WIPO (PCT)
Prior art keywords
mirror group
mirror
mirror assembly
heliostat device
azimuth
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Application number
PCT/CN2009/075668
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English (en)
French (fr)
Inventor
王成伟
王智鸣
Original Assignee
Wang Chengwei
Wang Zhiming
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Publication date
Application filed by Wang Chengwei, Wang Zhiming filed Critical Wang Chengwei
Priority to JP2012542335A priority Critical patent/JP2013513817A/ja
Priority to US13/516,769 priority patent/US20120314314A1/en
Priority to CN2009801589006A priority patent/CN102414520A/zh
Priority to PCT/CN2009/075668 priority patent/WO2011072449A1/zh
Priority to EP09852187.5A priority patent/EP2515051A4/en
Publication of WO2011072449A1 publication Critical patent/WO2011072449A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/45—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
    • F24S30/452—Vertical primary axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/80—Arrangements for controlling solar heat collectors for controlling collection or absorption of solar radiation
    • 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

Definitions

  • Heliostat device for controlling the direction of reflection with a sensor
  • the present application relates generally to heliostat devices for solar tower power plants and, more particularly, to heliostat devices that use sensors to control the direction of reflection. Background technique
  • Heliostats are mirror devices used to accurately position sunlight on a target, often used as a concentrating component for solar lighting or thermal power systems.
  • a plurality of heliostats form a heliostat group that reflects sunlight onto a collector at the top of the receiving tower to obtain focused solar energy.
  • FIG. 1 Chinese patent application CN100554816 describes a heliostat device, as shown in Fig. 1, the structure includes: a mirror group and its integral frame 111, an elevation adjustment mechanism, an azimuth adjustment mechanism, positioning sensors 14 and 15, and positioning
  • the signal of the sensor is the input control system that controls the movement of the adjustment mechanism described above.
  • the positioning sensor is supported by a separate bracket 112 on the ground between the mirror group and the collector, and maintains the intersection of the center line and the horizontal axis and the vertical axis of the mirror group (geometric center point) and the collector center point.
  • connection between the wires overlaps, and the control system adjusts the posture of the mirror according to the light intensity difference signals in the four directions sensed by the four-quadrant photosensitive elements in the positioning sensor, so that the reflected light direction of the mirror and the positioning sensor are pointed The direction is always the same.
  • the present invention has been made in consideration of the above problems.
  • the invention provides a heliostat device, comprising: a mirror group, the front mirror facing the sun; an elevation adjusting mechanism rotating around the horizontal axis and being controlled to adjust the elevation angle of the mirror group; the azimuth adjusting mechanism, surrounding a vertical axis is rotated and controlled to adjust an azimuth of the mirror group; a positioning sensor facing the mirror group and outputting elevation and azimuth control signals to control a direction of reflected light of the mirror group; and a post, fixedly Erected on
  • the mirror group, the elevation adjusting mechanism and the azimuth adjusting mechanism are integrally supported on the ground and on the back side of the mirror group, wherein the strut passes through a gap below the central mirror, and the positioning sensor is mounted on the strut One end, and the other end of the strut is fixed to the upright such that the positioning sensor protrudes in front of the central mirror to control and maintain the reflected light of the mirror group during the rotation of the sun Falling on
  • Fig. 1 is a schematic view showing the structure of a conventional heliostat device.
  • Fig. 2 is a schematic view showing a heliostat device proposed by the present invention.
  • Figure 3 is a structural view of the heliostat device as seen from the front of the mirror group.
  • Figure 4 is a structural view of the heliostat device as seen from the back of the mirror group, in which the strut is not shown. detailed description
  • the present invention provides a heliostat device comprising: a mirror assembly 1 for facing the front mirror to the sun, enabling the mirror assembly 1 to rotate about a horizontal axis 12 to adjust the elevation angle of the elevation of the mirror group
  • the column 5 is erected on the ground and integrally supports the mirror group 1, the positioning sensor 4, and the elevation adjusting mechanism and the azimuth adjusting mechanism.
  • the elevation adjustment mechanism includes a support shaft 6 and a spindle nut unit 2.
  • the support shaft 6 rotatably supports the mirror group 1 so that the mirror group 1 can be rotated about the horizontal axis 12 under the driving of the screw nut unit 2, thereby adjusting the pitch angle of the mirror group 1.
  • the azimuth adjusting mechanism includes a turntable 14 fixedly coupled to the support shaft 6, a turntable stay 7 fixedly coupled to the turntable 14, and a screw nut unit 3.
  • the turntable column 7 is rotatably disposed at the upper end of the column 5. Therefore, when the screw nut unit 3 is driven to push the support shaft 6, the turntable strut 7 drives the turntable 14, the support shaft 6, and the entire mirror group 1 to rotate about the vertical axis 13, and finally adjusts the orientation of the mirror group facing the sun. the goal of.
  • the elevation adjustment mechanism, the azimuth adjustment mechanism, and the uprights 5 are all disposed on the mirror group 1 The side facing away from the sun (ie the back of the mirror group).
  • the strut 10 passes through the position of the original mirror lb below the center mirror la (the mirror lb has been removed) so that one end is fixed to the upright 5 and the other end is The back side of the mirror group protrudes above the center mirror la.
  • the positioning sensor 4 is disposed at one end of the strut 10 that protrudes above the center mirror la and is always kept such that light is incident on its lens and is emitted toward the bull's-eye of the collector, thereby controlling the reflected light at the position point P. The direction.
  • the light reflected by the position where the horizontal and vertical axes of the mirror group 1 intersect does not deviate from the positioning sensor 4, and the reflective direction of the mirror group controlled by the positioning sensor 4 is Fixed concentrating target direction.
  • the portion of the strut 10 of the positioning sensor 4 that is within the range of motion of the mirror group is in the shape of a circular arc having a radius R centered on the axis of the rotating shaft 6, so that the strut 10 and the rotating mirror group can be avoided. 1 Collision occurred.
  • the position of the original mirror lb in addition to a certain gap to allow the positioning sensor 4 to pass through, can also be arranged coplanar with the mirror group to provide a photovoltaic cell for providing long-term work to the entire system. Electrical energy.
  • the heliostat device of the present invention has the following advantages: Since the positioning sensor of the present invention is not separately provided, but is close to the mirror group 1 and fixed to the column supporting the mirror group 1, the reliability of the support is greatly improved, and is also convenient. Operate when installing and debugging. Since the separate column is omitted, it is not necessary to consider the support structure of the sensor and the influence of harsh outdoor conditions, and the production and maintenance costs are effectively reduced, which has good economic benefits.
  • the above embodiment is merely an example, and some changes may be made according to actual conditions, for example, the arrangement of the strut supporting the positioning sensor may be changed without affecting the rotation of the entire heliostat device and maintaining the posture of the positioning sensor.
  • the number of mirrors of the mirror group can be variously arranged such as 5*7, 7*7, and 9*9, and the size of each mirror is not limited to 600*600 mm 2 .

Description

用传感器控制反射方向的定日镜装置 技术领域
本申请大体涉及用于太阳能塔式电站的定日镜装置， 更具体地， 涉及用 传感器控制反射方向的定日镜装置。 背景技术
定日镜是用于将太阳光准确定位在某个目标物上的反光镜装置， 常用来 作为太阳能釆光照明装置或热发电系统的聚光部件。在太阳能塔式热发电系 统中， 多块定日镜组成定日镜组， 将太阳光反射到接收塔顶部的集热器上， 以获得聚焦的太阳能。 为了获得理想的聚光效果， 通常希望定日镜装置具有 足够的跟踪精度。
中国专利申请 CN100554816描述了一种定日镜装置， 如图 1所示， 其 结构包括： 反光镜组及其整体框架 111、 仰角调整机构、 方位角调整机构、 定位传感器 14和 15、 以及以定位传感器的信号为输入的控制上述调整机构 运动的控制系统。 定位传感器由单独的支架 112支撑在反光镜组和集热器之 间的地面上， 并保持中心线与反光镜组的横轴和纵轴两轴线交点（几何中心 点）和集热器中心点之间的连线重合， 控制系统根据定位传感器中的四象限 光敏元件感测到的四个方位上的光强差信号来调节反光镜的姿态，使得反光 镜的反射光方向和定位传感器所指向的方向始终一致。
然而， 在实际应用中， 由于各种不良户外条件（大风、 雨雪等等）的影 响， 很难保持定位传感器所在的支架的稳定性， 因此影响整个定日镜系统的 跟踪精度。 而且由于定位传感器与反光镜组间隔开来， 安装和维护时对定位 传感器进行调整也不方便。 发明内容
本发明考虑上述问题而提出。 本发明提供一种定日镜装置， 包括： 反光 镜组， 使正面的反光镜面对太阳； 仰角调整机构， 围绕水平轴线转动并被控 制以调整反光镜组的仰角； 方位角调整机构， 围绕垂直轴线转动并被控制以 调整反光镜组的方位角； 定位传感器， 面向所述反光镜组， 并输出仰角和方 位角控制信号以控制所述反光镜组的反射光方向； 以及立柱， 固定地竖立于 地面上并在反光镜组的背面整体支撑所述反光镜组、仰角调整机构和方位角 调整机构， 其中， 支杆穿过中心反光镜下方的空隙， 所述定位传感器安装在 所述支杆的一端， 而所述支杆的另一端被固定到所述立柱上， 使得所述定位 传感器突伸到中心反光镜前方，从而进行控制并保持在太阳转动的过程中反 射镜组的反射光能够全部落在集热器的靶心。 附图说明
图 1是现有的定日镜装置的结构概要图。
图 2是本发明提出的定日镜装置的概要示图。
图 3是从反光镜组正面看的定日镜装置结构图。
图 4是从反光镜组背面看的定日镜装置结构图， 其中未示出支杆。 具体实施方式
下面结合附图对本发明作进一步的说明。 附图中的结构仅作为示例提 供， 并非限制性的， 而且图中的结构并未严格按照实际比例绘制， 某些部分 尺寸放大以清楚显示细节。
参见图 2, 本发明提出一种定日镜装置， 包括： 使正面的反光镜面对太 阳的反光镜组 1、使反射镜组 1能够围绕水平轴线 12转动以调整反光镜组的 仰角的仰角调整机构、 使反射镜组 1能够围绕垂直轴线 13转动以调整反光 镜组的方位角的方位角调整机构、输出仰角和方位角控制信号以控制反光镜 组 1的反射光方向的定位传感器 4、 竖立于地面上并整体支撑反光镜组 1、 定位传感器 4以及仰角调整机构和方位角调整机构的立柱 5。
参见图 4,仰角调整机构包括支撑转轴 6和丝杠螺母单元 2。 支撑转轴 6 可旋转地支撑反光镜组 1 , 使得反光镜组 1在丝杠螺母单元 2的驱动下可围 绕水平轴线 12转动， 从而调整反光镜组 1的俯仰角度。
方位角调整机构包括固定连接支撑转轴 6 的转台 14、 固定连接于转台 14的转台支柱 7和丝杠螺母单元 3。转台支柱 7可旋转地布置在立柱 5的上 端。 因此， 当丝杠螺母单元 3被驱动从而推动支撑转轴 6时， 转台支柱 7带 动转台 14、 支撑转轴 6以及整个反光镜组 1围绕垂直轴线 13转动， 最终达 到调整反光镜组面对太阳的方位的目的。
这里， 仰角调整机构、 方位角调整机构、 立柱 5均设置于反光镜组 1的 背向太阳的一侧 （即反光镜组的背面）。
参见图 2和 3 , 在本发明中， 支杆 10穿过中心反光镜 la下方的原反光 镜 lb所在的位置 （反光镜 lb已去掉）， 使得一端被固定到立柱 5上， 而另 一端从反光镜组的背面突伸到中心反光镜 la上方。 定位传感器 4布置于支 杆 10的突伸到中心反光镜 la上方的一端， 并始终保持使得光入射到其透镜 上且向集热器的靶心的方向射出， 从而控制位置点 P处的反射光的方向。
具体地， 在工作中， 通过反射镜组 1的横纵两轴线交叉的位置（即， 几 何中心）反射的光线不偏离定位传感器 4, 这时定位传感器 4所控制的反光 镜组的反光方向就是固定的聚光目标方向。
特别的， 定位传感器 4的支杆 10的在反光镜组运动范围内的部分是以 支撑转轴 6的轴为圓心的半径 R的圓弧形状， 这样可以避免支杆 10与转动 中的反光镜组 1发生碰撞。
另外， 原反光镜 lb所在的位置， 除了可以开出一定的空隙以便定位传 感器 4穿过以外， 还可以与反射镜组共面地布置一光伏电池， 用于向整个系 统提供长期工作所需的电能。
本发明的定日镜装置具有以下优点： 由于本发明的定位传感器不是单独 设置， 而是靠近反光镜组 1且固定于支撑反光镜组 1的立柱上， 支撑的可靠 性大大提高， 而且也便于安装调试时进行操作。 由于省去了单独的立柱， 不 需要再考虑传感器的支撑结构以及恶劣户外条件的影响等问题，也有效地降 低了生产和维护成本， 具有良好的经济效益。
上述实施例仅作为示例， 还可以根据实际情况做一些变化， 比如， 在不 影响整个定日镜装置旋转且保持定位传感器姿态的情况下， 支撑定位传感器 的支杆的布置可变化。 另外， 反光镜组的镜子数可以有 5*7、 7*7和 9*9等 多种布置， 每块反射镜的尺寸也不限于 600*600mm2。
除以上实施例外， 本发明还有其他多种实施方式。 凡是本领域技术人员 在本发明基础上所做的等同替换或类似组合交换均属于本专利保护范围。

Claims

权利要求书
1. 一种定日镜装置， 包括：
反光镜组， 使正面的反光镜面对太阳；
仰角调整机构， 围绕水平轴线转动并被控制以调整反光镜组的仰角； 方位角调整机构， 围绕垂直轴线转动并被控制以调整反光镜组的方位 角；
定位传感器， 面向所述反光镜组， 并输出仰角和方位角控制信号以控制 所述反光镜组的反射光方向； 以及
立柱， 固定地竖立于地面上并在反光镜组的背面整体支撑所述反光镜 组、 仰角调整机构和方位角调整机构，
其中， 支杆穿过中心反光镜下方的空隙， 所述定位传感器安装在所述支 杆的一端， 而所述支杆的另一端被固定到所述立柱上， 使得所述定位传感器 突伸到中心反光镜前方，从而进行控制并保持在太阳转动的过程中反射镜组 的反射光能够全部落在集热器的靶心。
2. 如权利要求 1所述的定日镜装置，其中，仰角调整机构包括支撑转轴 和丝杠螺母单元， 支撑转轴可旋转地支撑反光镜组， 使得反光镜组在丝杠螺 母单元的驱动下可围绕水平轴线转动， 以调整反光镜组的俯仰角度。
3. 如权利要求所述 1的定日镜装置，其中，方位角调整机构包括固定连 接可旋转地支撑反光镜组的支撑转轴的转台、 固定连接于转台的转台支柱和 丝杠螺母单元， 转台支柱可旋转地布置在立柱的上端， 因此， 当丝杠螺母单 元被驱动从而推动支撑转轴时， 转台支柱带动转台、 支撑转轴以及整个反光 镜组围绕垂直轴线转动， 最终达到调整反光镜组面对太阳的方位的目的。
4. 如权利要求 2所述的定日镜装置，其中，所述定位传感器的支杆的在 所述反光镜组运动范围内的部分是以支撑转轴的转轴为圓心的半径 R 的圓 弧形状。
5. 如权利要求 1所述的定日镜装置，其中，在突伸出来的定位传感器下 方与所述反光镜组共面地设置一光伏电池， 用于向所述定日镜装置提供电 能， 如此， 每台定日镜装置不需要外部电源和外部控制， 独立运行。
PCT/CN2009/075668 2009-12-17 2009-12-17 用传感器控制反射方向的定日镜装置 WO2011072449A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2012542335A JP2013513817A (ja) 2009-12-17 2009-12-17 反射方向をセンサで制御するヘリオスタット装置
US13/516,769 US20120314314A1 (en) 2009-12-17 2009-12-17 Heliostat device
CN2009801589006A CN102414520A (zh) 2009-12-17 2009-12-17 用传感器控制反射方向的定日镜装置
PCT/CN2009/075668 WO2011072449A1 (zh) 2009-12-17 2009-12-17 用传感器控制反射方向的定日镜装置
EP09852187.5A EP2515051A4 (en) 2009-12-17 2009-12-17 HELIOSTAT DEVICE

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PCT/CN2009/075668 WO2011072449A1 (zh) 2009-12-17 2009-12-17 用传感器控制反射方向的定日镜装置

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EP2818806A4 (en) * 2012-02-22 2015-11-11 Univ Sevilla SYSTEM FOR POSITIONING A SUN-REFLECTING SURFACE USING A SOLAR SENSOR IN REFLECTED LIGHT
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CN107368101A (zh) * 2017-07-04 2017-11-21 华北电力大学 一种基于追日传感器的定日镜装置及工作方法

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JP5759298B2 (ja) * 2011-08-01 2015-08-05 三鷹光器株式会社 センサー式小型ヘリオスタットのレーザー位置決め治具
CN103309361A (zh) * 2013-06-03 2013-09-18 梁方民 一种定日镜的跟踪瞄准控制方法及其装置
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US20120314314A1 (en) 2012-12-13

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