CN102519155A - Fresnel thermal power generation overlapped heat collector - Google Patents

Abstract

The invention relates to a Fresnel thermal power generation overlapped heat collector, which comprises a heat collecting pipe, wherein the heat collecting pipe consists of a heat collecting pipe inner pipe and a heat collecting pipe outer pipe, the heat collecting pipe is in horizontal arrangement, the heat collecting pipe inner pipe is fixedly arranged on a heat collecting pipe support ring, the heat collecting pipe support ring and a top device support are in crossed connection, the top end of the top device support is connected with a small pipe support frame, the small pipe support frame is placed onto the heat collecting pipe, a light ray recovering small pipe parallel to the heat collecting pipe is arranged on the small pipe support frame, and the bottom end of the top device support is connected with a mirror frame framework. The Fresnel thermal power generation overlapped heat collector has the advantages that the light ray focusing difficulty is reduced, the performance of high absorption rate and low emission rate of the vacuum heat collecting pipe is sufficiently utilized, the light ray loss between the vacuum heat collecting pipe outer glass covers is also avoided, simultaneously, the solar light ray and heat utilization and conversion rate is improved, and the integral energy utilization efficiency of the solar energy is greatly improved.

Description

Translated fromChinese

一种菲涅尔热发电的重叠式集热装置An overlapping heat collector for Fresnel thermal power generation

技术领域technical field

本发明属于太阳能光热发电技术领域，具体涉及一种菲涅尔热发电的重叠式集热装置。The invention belongs to the technical field of solar photothermal power generation, and in particular relates to an overlapping heat collecting device for Fresnel thermal power generation.

背景技术Background technique

我国的能源资源储量不容乐观，人均资源并不丰富。化石能源的大量开发和利用使得我国排放CO₂总量最多。许多地方，缺乏常规能源资源，但太阳能资源丰富。太阳能热发电具有技术相对成熟、对电网冲击小等优点，是可再生能源发电中最有前途的发电方式之一。其热功转换部分与常规火力发电机组相同，有成熟的技术可资利用，因此特别适宜于大规模化使用。my country's energy resource reserves are not optimistic, and per capita resources are not rich. The massive development and utilization of fossil energy makes China emit the most CO₂ in total. In many places, conventional energy resources are lacking, but solar energy resources are abundant. Solar thermal power generation has the advantages of relatively mature technology and small impact on the power grid, and is one of the most promising power generation methods in renewable energy power generation. Its thermal power conversion part is the same as that of conventional thermal power generating units, and mature technology is available, so it is especially suitable for large-scale use.

在太阳能菲涅尔热发电技术中，反射聚焦及变焦对焦是其关键技术之一，如何最大限度的收集太阳能辐射，提高光热转化效率，是专业技术人员需要解决的难题。Reflective focusing and zoom focusing are one of the key technologies in solar Fresnel thermal power generation technology. How to collect solar radiation to the maximum and improve the efficiency of light-to-heat conversion is a problem that professional technicians need to solve.

同时，菲涅尔太阳能发射聚焦技术，无论平面反射或弧面反射，其聚焦始终是其技术发展和性能的重要体现，不同时刻、不同日期、不同地理位置，其焦距和光斑大小始终在不停变化。一般很难将其始终聚焦到很窄的光斑内，如此造成大部分反射光线的损失，而抛物复合面CPC则面临加工精度高、成型难度大，材料较难选择的问题。At the same time, Fresnel solar emission focusing technology, regardless of plane reflection or arc reflection, its focusing is always an important manifestation of its technological development and performance. At different times, different dates, and different geographical locations, its focal length and spot size are always changing. Variety. Generally, it is difficult to focus it into a very narrow spot, which causes the loss of most of the reflected light. However, parabolic compound surface CPC faces the problems of high processing precision, difficult molding, and difficult selection of materials.

发明内容Contents of the invention

为了克服上述现有技术的缺点，本发明的目的在于提供一种菲涅尔热发电的重叠式集热装置，充分利用太阳能辐射，扩大反射光线吸收面积，以达到即利用了真空集热管高吸收性能又降低聚焦光斑难度，同时又能最大限度的充分吸收太阳能辐射，减少反射管线损失。In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a Fresnel thermal power generation overlapping heat collector, which makes full use of solar radiation and expands the absorption area of reflected light to achieve the high absorption of vacuum heat collecting tubes. The performance reduces the difficulty of focusing the spot, and at the same time, it can fully absorb solar radiation to the maximum extent and reduce the loss of reflection pipelines.

为了解决上述技术问题，本发明采用的技术方案是：In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

一种菲涅尔热发电的重叠式集热装置，包括由集热管内管3-1和集热管外管3-2组成的集热管3，集热管3水平设置，集热管内管3-1固定于集热管托环4上，集热管托环4与顶部装置支撑5呈十字连接，顶部装置支撑5的顶端连接小管支架2，小管支架2置于集热管3上，小管支架2上设置有与所述集热管3平行的光线回收小管1，顶部装置支撑5的底端连接镜框框架6。An overlapping heat collecting device for Fresnel thermal power generation, comprising aheat collecting tube 3 composed of a heat collecting tube inner tube 3-1 and a heat collecting tube outer tube 3-2, theheat collecting tube 3 is arranged horizontally, and the heat collecting tube inner tube 3-1 Fixed on the heat collectingtube support ring 4, the heat collectingtube support ring 4 is connected with thetop device support 5 in a cross, the top of thetop device support 5 is connected to thesmall tube support 2, thesmall tube support 2 is placed on theheat collecting tube 3, and thesmall tube support 2 is provided with The smalllight recovery tube 1 parallel to theheat collecting tube 3 and the bottom end of thetop device support 5 are connected to themirror frame 6 .

所述集热管3有两个以上，平行排列设置，相应的顶部装置支撑5从相邻集热管3的间隙中穿出连接到小管支架2。There are more than twoheat collecting tubes 3 arranged in parallel, and the correspondingtop device support 5 passes through the gap between adjacentheat collecting tubes 3 and is connected to thesmall tube support 2 .

所述集热管3为双玻璃真空集热管、玻璃-金属真空集热管、不同管径镀膜金属管以及密封有气体的双层玻璃-金属真空管中的一种或者任意几种的结合。Theheat collecting tube 3 is one or any combination of double-glass vacuum heat collecting tubes, glass-metal vacuum heat collecting tubes, coated metal tubes with different diameters, and double-layer glass-metal vacuum tubes sealed with gas.

所述光线回收小管1为多个平行排列的裸管，口径小于集热管内管3-1。The smalllight recovery tube 1 is a plurality of bare tubes arranged in parallel, and the caliber is smaller than the inner tube 3-1 of the heat collecting tube.

所述光线回收小管1为多个平行排列的镀膜金属管，口径小于集热管内管3-1，位于集热管3的光线泄露处。The smalllight recovery tube 1 is a plurality of coated metal tubes arranged in parallel, the caliber is smaller than the inner tube 3 - 1 of the heat collection tube, and is located at the light leakage of theheat collection tube 3 .

本发明的有益效果是：降低了光线聚焦难度，充分利用了真空集热管的高吸收率、低发射率的性能，又克服了真空集热管外玻璃罩间的光线损失。同时提高了太阳能的光线和热量的利用和转换效率。极大地提高了太阳能的整体能量利用效率。The invention has the beneficial effects of reducing the difficulty of light focusing, making full use of the high absorptivity and low emissivity performance of the vacuum heat collecting tube, and overcoming the light loss between the outer glass covers of the vacuum heat collecting tube. At the same time, the utilization and conversion efficiency of solar light and heat are improved. The overall energy utilization efficiency of solar energy is greatly improved.

附图说明Description of drawings

图1为本发明支架结构图。Fig. 1 is a structural diagram of the stent of the present invention.

图2为图1的A框放大图。Figure 2 is an enlarged view of frame A in Figure 1 .

具体实施方式Detailed ways

下面结合附图和实施例详细说明本发明的实施方式。The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

如图1和图2所示，本发明为一种菲涅尔热发电的重叠式集热装置，包括由集热管内管3-1和集热管外管3-2组成的集热管3，集热管3水平设置，数量有多个，各自平行排列设置。集热管内管3-1固定于集热管托环4上，集热管托环4与顶部装置支撑5呈十字连接，顶部装置支撑5从相邻集热管3的间隙中穿出连接到小管支架2。小管支架2置于集热管3上，小管支架2上设置有与所述集热管3平行的光线回收小管1，顶部装置支撑5的底端连接镜框框架6。光线回收小管1为多个平行排列的小口径的裸管或者镀膜金属管，口径小于集热管内管3-1，位于集热管3的光线泄露处。As shown in Fig. 1 and Fig. 2, the present invention is a kind of superimposed heat collecting device of Fresnel thermal power generation, comprises theheat collecting pipe 3 that is made up of heat collecting pipe inner pipe 3-1 and heat collecting pipe outer pipe 3-2, collects Theheat pipes 3 are arranged horizontally, and there are multiple heat pipes arranged in parallel. The inner tube 3-1 of the heat collecting tube is fixed on the heat collectingtube supporting ring 4, and the heat collectingtube supporting ring 4 is connected to thetop device support 5 in a cross connection, and the top device support 5 passes through the gap between adjacentheat collecting tubes 3 and connects to thesmall tube support 2 . Thesmall tube support 2 is placed on theheat collecting tube 3, the light recoverysmall tube 1 parallel to theheat collecting tube 3 is arranged on thesmall tube support 2, and the bottom end of thetop device support 5 is connected to thepicture frame frame 6. The smalllight recovery tube 1 is a plurality of small-diameter bare tubes or coated metal tubes arranged in parallel.

其中，所述集热管3为双玻璃真空集热管、玻璃-金属真空集热管、不同管径镀膜金属管以及密封有气体的双层玻璃-金属真空管中的一种或者任意几种的结合，形成不同形状的重叠式集热装置，需要根据不同的光照情况来选择。Wherein, theheat collecting tube 3 is one or any combination of double glass vacuum heat collecting tubes, glass-metal vacuum heat collecting tubes, coated metal tubes with different diameters, and double-layer glass-metal vacuum tubes sealed with gas, forming Different shapes of overlapping heat collectors need to be selected according to different lighting conditions.

根据上述的机构，从镜框框架6上的反射镜装置7反射聚焦的太阳光将反射到两个或多个集热管内管3-1上，利用真空管的高吸收性能，同时扩大了反射光线的接受面积。而从多个集热管内管3-1的间隙处经集热管外管3-2泄露出的光线照射到上部的光线回收小管1，充分回收了光线，减少了光线损失。According to the above-mentioned mechanism, the reflected and focused sunlight from thereflector device 7 on thepicture frame frame 6 will be reflected on two or more heat collecting tube inner tubes 3-1, and the high absorption performance of the vacuum tube is utilized to expand the reflected light at the same time. Acceptance area. The light leaked from the gaps of the inner tubes 3-1 of the plurality of heat-collecting tubes through the outer tubes 3-2 of the heat-collecting tubes irradiates the light-recyclingsmall tube 1 on the top, fully recovering the light and reducing light loss.

Claims (6)

Translated fromChinese

1.一种菲涅尔热发电的重叠式集热装置，包括由集热管内管(3-1)和集热管外管(3-2)组成的集热管(3)，集热管(3)水平设置，其特征在于，集热管内管(3-1)固定于集热管托环(4)上，集热管托环(4)与顶部装置支撑(5)呈十字连接，顶部装置支撑(5)的顶端连接小管支架(2)，小管支架(2)置于集热管(3)上，小管支架(2)上设置有与所述集热管(3)平行的光线回收小管(1)，顶部装置支撑(5)的底端连接镜框框架(6)。1. A kind of overlapping type heat collecting device of Fresnel thermal power generation, comprise the heat collecting tube (3) that is made up of heat collecting tube inner tube (3-1) and heat collecting tube outer tube (3-2), heat collecting tube (3) Horizontally arranged, it is characterized in that the inner tube (3-1) of the heat collecting tube is fixed on the heat collecting tube support ring (4), the heat collecting tube support ring (4) is connected with the top device support (5) in a cross, and the top device support (5 ) is connected to the small tube support (2), the small tube support (2) is placed on the heat collecting tube (3), the small tube support (2) is provided with a light recovery small tube (1) parallel to the heat collecting tube (3), and the top The bottom end of device support (5) is connected picture frame frame (6).2.根据权利要求1所述的菲涅尔热发电的重叠式集热装置，其特征在于，所述集热管(3)有两个以上，平行排列设置，相应的顶部装置支撑(5)从相邻集热管(3)的间隙中穿出连接到小管支架(2)。2. the overlapping type heat collecting device of Fresnel thermal power generation according to claim 1, is characterized in that, described heat collecting tube (3) has more than two, arranges in parallel, and corresponding top device supports (5) from Pass through the gap between adjacent heat collecting tubes (3) and connect to the small tube support (2).3.根据权利要求1所述的菲涅尔热发电的重叠式集热装置，其特征在于，所述集热管(3)为双玻璃真空集热管、玻璃-金属真空集热管、不同管径镀膜金属管以及密封有气体的双层玻璃-金属真空管中的一种或者任意几种的结合。3. The overlapping heat collecting device for Fresnel thermal power generation according to claim 1, characterized in that, the heat collecting tubes (3) are double glass vacuum heat collecting tubes, glass-metal vacuum heat collecting tubes, coatings with different pipe diameters One or any combination of metal tubes and double-layer glass-metal vacuum tubes sealed with gas.4.根据权利要求1所述的菲涅尔热发电的重叠式集热装置，其特征在于，所述光线回收小管(1)为多个平行排列的裸管，口径小于集热管内管(3-1)。4. the overlapping type heat collecting device of Fresnel thermal power generation according to claim 1, is characterized in that, described light recovery small tube (1) is a plurality of bare tubes arranged in parallel, and caliber is smaller than heat collecting pipe inner tube (3 -1).5.根据权利要求1所述的菲涅尔热发电的重叠式集热装置，其特征在于，所述光线回收小管(1)为多个平行排列的镀膜金属管，口径小于集热管内管(3-1)。5. the overlapping type heat collecting device of Fresnel thermal power generation according to claim 1, it is characterized in that, described light recovery small tube (1) is the coating metal tube of a plurality of parallel arrangements, and caliber is less than tube in heat collecting tube ( 3-1).6.根据权利要求5所述的菲涅尔热发电的重叠式集热装置，其特征在于，所述光线回收小管(1)位于集热管(3)的光线泄露处。6 . The Fresnel thermal power generation overlapping heat collection device according to claim 5 , characterized in that, the small light recovery tube ( 1 ) is located at the light leakage of the heat collection tube ( 3 ).

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