Spiral inner-tube vacuum heat collecting tube suitable for large temperature difference

A vacuum heat collector tube and spiral technology, applied in the field of solar energy utilization, can solve the problems of reducing solar radiation absorption, inconvenient for a large number of layouts, limited layout area, etc., and achieve the effects of high thermal efficiency, excellent compatibility and low manufacturing cost.

Active Publication Date: 2015-01-14
ZHANGJIAGANG YUCHENG MASCH C0 LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter which arrangement method is adopted in the prior art, the arrangement area is still limited, and it is inconvenient to arrange a large number of arrangements; and in any case, it will form a shield to reduce the absorption of solar radiation

Method used

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  • Spiral inner-tube vacuum heat collecting tube suitable for large temperature difference
  • Spiral inner-tube vacuum heat collecting tube suitable for large temperature difference
  • Spiral inner-tube vacuum heat collecting tube suitable for large temperature difference

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0033] like figure 1 , 2 , 3 shows a spiral inner tube vacuum heat collector suitable for large temperature differences, including an outer tube 1, an inner tube 2, a support tube 3 and a sealing member. in:

[0034] The material of the outer tube 1 is any highly transparent material, which has a high transmittance to solar radiation with a wavelength of 0.3-3 microns. The present embodiment takes a glass outer tube as an example. Its specifications are outer diameter: 105mm, wall thickness: 3mm.

[0035] The inner tube 2 is a glass inner tube, and the outer tube wall of the inner tube 1 is covered with a heat-absorbing film. The inner tube 2 includes a spiral section 20 in the middle and a straight section 21 at both ends. Its specification outer diameter: 12mm, wall thickness: 1.2mm, lead: 13mm; main pipe length 1980mm, outer diameter of threa...

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Abstract

The invention relates to a spiral inner-tube vacuum heat collecting tube suitable for large temperature difference. The spiral inner-tube vacuum heat collecting tube comprises an outer tube, a sealing element, an inner tube and a supporting tube, wherein the sealing element is used for sealing the two end parts of the outer tube and enclosing a vacuum space; the inner tube is arranged inside the outer tube, and two ends of the inner tube penetrate out of the sealing element; two ends of the supporting tube are connected with the sealing element, and the supporting tube is used for supporting the inner tube; and the inner tube comprises a spiral section located in the middle and linear sections located at two ends, wherein the spiral section is wound on the supporting tube, the linear sections penetrate out of the sealing element, and annular bulges for preventing the linear sections from sliding relative to the sealing element are also arranged at positions, penetrating out of the sealing element, on the linear sections. By using the spiral inner-tube vacuum heat collecting tube, a favorable vacuum degree can be kept between the outer tube and the spiral inner tube under the conditions of high temperature and large temperature difference; and the spiral inner-tube vacuum heat collecting tube is low in manufacturing cost, long in working life, high in heat efficiency and capable of greatly promoting the industrialization and large-scale production of solar heat collecting tubes and promoting environment protection.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, in particular to a spiral inner tube vacuum heat collecting tube suitable for large temperature difference. Background technique [0002] Energy is an important material basis for the development of the national economy and the improvement of people's living standards. Solar energy is a clean, non-polluting and inexhaustible energy source. It has received more and more attention from the whole society. The focus of competing development. At present, the known device that effectively absorbs solar heat energy is the solar vacuum heat collecting tube. Now a variety of solar vacuum heat collecting tubes have been developed, and their application scope covers the supply of domestic hot water, industrial process heating, seawater desalination and solar thermal power generation. aspect. [0003] The trough concentrating system is currently the most widely used solar medium and high t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/46
CPCY02A20/142Y02E10/40
Inventor 匡荛张玉飞徐开峰
Owner ZHANGJIAGANG YUCHENG MASCH C0 LTD
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