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Line-focused solar-enhanced heat collector with composite degasser

A heat collector tube and line focusing technology, applied in the field of solar thermal utilization, can solve the problems of affecting the life of the getter and the inhalation effect, aggravating the release of hydrogen, and unable to maintain airtightness, etc., achieving fewer parts, ensuring vacuum and use. The effect of longevity and simple process

Active Publication Date: 2015-11-25
张建城
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is found from the production of examples that although the barium-aluminum-nickel evaporative air getter used has a good effect of adsorbing trace gases, its maximum operating temperature is limited to 350 degrees, which seriously affects the life of the air getter and air absorption in high temperature environments. Effect, non-evaporative air getter (NEG) has a reversible phenomenon to hydrogen in a high temperature environment. If it is improperly installed or baked in a focused focal spot, it will not only fail to maintain airtightness, but may aggravate the release of hydrogen

Method used

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  • Line-focused solar-enhanced heat collector with composite degasser
  • Line-focused solar-enhanced heat collector with composite degasser
  • Line-focused solar-enhanced heat collector with composite degasser

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Experimental program
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Embodiment Construction

[0029] 1. Choose evaporable air getter (EG) or non-evaporable air getter (NEG) as the getter material of the composite getter, which can be getter rings, getter rods, getter sheets, and getter belts with stainless steel welding brackets.

[0030] 2. The evaporative air getter is a barium aluminum nickel getter, which mainly absorbs trace gases released by glass and metal at high temperature; the solder joint of the bracket is as close as possible to the outer glass tube, and is located on the metal inner tube on the side of the exhaust pipe. To reduce the high temperature baking of the metal inner tube.

[0031] 3. The evaporative gas getter ring with stainless steel bracket is welded at one end of the unloading device. The length of the bracket is at least 30-100mm away from the unloading device. It should be as far away from the unloading bellows as possible and close to the glass outer tube. After high-frequency activation, the barium-aluminum film should be on the exhaust p...

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Abstract

The invention relates to a line focus solar energy enhanced collector tube provided with a composite getter device. The collector tube structurally gives full consideration to the requirements for high temperature resistance, air tightness, high efficiency and low cost, adopts various getters and installation structures in the aspect of device structure and simultaneously improves the glass metal sealing in structures and unloading devices to meet the technical requirement for solar energy thermal power generation under medium and high temperature and under the condition of adopting molten salt and the DSG (direct steam generation) heat transfer mode. The collector tube is suitable for solar energy thermal power generation under medium and high temperature and belongs to the technical field of solar energy thermal utilization.

Description

technical field [0001] The invention relates to a line-focused solar-enhanced heat collection tube equipped with a composite air-eliminating device. Its structure fully takes into account the requirements of high-temperature resistance, air-tightness, high efficiency and low cost, and adopts various air-absorbing agents and installation structures in the structure of the device. To meet the technical requirements of solar thermal power generation under medium and high temperature and using molten salt and DSG heat transfer modes. The heat collecting tube is suitable for high-temperature solar thermal power generation and belongs to the technical field of solar thermal utilization. Background technique [0002] At present, there are differences in the getter and its structure used in the trough-type line-focused solar heat collector abroad. The getter used by Solel adopts a flat plate-shaped design structure to increase the air intake. The getter is installed in a long metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/46
CPCY02E10/40
Inventor 张建城
Owner 张建城