High-temperature-resistant high-reflective insulation light shield for solar vacuum heat collecting tube

A vacuum heat collector tube and high reflection technology, applied in the field of solar thermal utilization, can solve the problems of loss of shading effect, oxidation, damage of bellows, etc., and achieve the effect of improving stability and service life

Inactive Publication Date: 2018-06-26
有研科技集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to obtain higher system efficiency, the focusing ratio of the concentrating system is constantly increasing, and under the condition of high focusing ratio, the traditional aluminum or stainless steel hood w

Method used

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  • High-temperature-resistant high-reflective insulation light shield for solar vacuum heat collecting tube

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing and embodiment the present invention is further described:

[0014] like figure 1 A high-temperature-resistant and high-reflection heat-insulation hood for a solar vacuum heat collecting tube is shown, comprising: a ceramic base 1, a heat-insulating inner layer 2 and a high-reflection outer layer 3, wherein the material of the ceramic base 1 is alumina, zirconia, Calcium oxide and magnesium oxide, etc., are prepared into a semicircle with a thickness of 1 mm to 3 mm by hot pressing and sintering; the material of the heat-insulating inner layer 2 is zirconia or aluminum oxide, which is coated (attached) by plasma spraying and rolling brush sintering on the inner side of the ceramic substrate 1, and its thickness is 2 μm to 2 mm; the high reflective outer layer 3 is an alumina coating, which is applied (attached) to the outer side of the ceramic substrate 2 by spraying or rolling, and its thickness is 1 μm to 2 mm; During in...

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Abstract

The invention discloses a high-temperature-resistant high-reflective insulation light shield for a solar vacuum heat collecting tube which belongs to the technical field of photo-thermal utilization of solar energy. The high-temperature-resistant high-reflective insulation light shield for the solar vacuum heat collecting tube is fixed to the heat collecting tube through a metal fastener. The high-temperature-resistant high-reflective insulation light shield for the solar vacuum heat collecting tube comprises a ceramic substrate, an insulating inner layer and a high-reflective outer layer, wherein the insulating inner layer is attached to the inner side of the ceramic substrate, and the high-reflective outer layer is attached to the outer side of the ceramic substrate. The light shield canbe oxidized under the circumstance of being radiated by high concentration ratio sunlight and reflects sunlight at the same time, and meanwhile, the light shield can be insulative. As heat accumulated by long-term radiation of the high concentration ratio sunlight reaches the sealing position of protecting the heat collecting tube and a corrugated pipe acts, under a high concentration ratio usingcondition, the reliability of the heat collecting tube u is increased and the service life of the heat collecting tube is prolonged.

Description

technical field [0001] The invention belongs to the technical field of solar light and heat utilization, and in particular relates to a high-temperature-resistant and high-reflection heat-insulation shading cover for a solar vacuum heat collection tube. Background technique [0002] With the rapid development of science and technology, people's demand for energy is increasing day by day. Solar trough thermal power generation has become a focus of attention. High-temperature solar vacuum heat collectors are the core components of trough solar power plants and have been extensively studied. In order to obtain higher system efficiency, the focusing ratio of the concentrating system is constantly increasing, and under the condition of high focusing ratio, the traditional aluminum or stainless steel hood will oxidize during use and lose its light-shielding effect. The generated heat will be conducted to the sealing position of the heat collecting tube and the bellows, thus caus...

Claims

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Application Information

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IPC IPC(8): F24S10/40F24S23/70F24S40/50F24S80/65
CPCY02E10/44
Inventor 米菁郝雷于庆河杜淼李世杰
Owner 有研科技集团有限公司
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