Medium-temperature and high-temperature solar heat collector tube exhaust method and device

A technology of solar collector tube and exhaust device, which is applied in the direction of solar thermal device, solar thermal power generation, heating device, etc., can solve the problem that the vacuum life and product quality cannot be further improved, the vacuum degree of medium and high temperature solar collector tube cannot be improved, and the vacuum degree cannot be fully improved. Eliminate gas and other problems to achieve the effect of shortening cooling time, exhausting exhaustion, and exhausting quickly

CN102506509BInactive Publication Date: 2013-07-24山东亿家能太阳能有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-07-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an exhaust method and an exhaust device for a medium-temperature and high-temperature solar heat collector tube. The exhaust method is characterized in that voltage is directly applied to the two ends of a metallic inner tube of the medium-temperature and high-temperature solar heat collector tube to form high current, and heat is generated by using resistance value of the metallic inner tube to heat the medium-temperature and high-temperature solar heat collector tube, so as to achieve the goal of high-temperature exhaust. The exhaust device comprises a support, a connecting conductive tool, an asbestos plug, a heat preserving tool, a control system, a vacuum unit, a corrugated tube, a temperature measuring instrument and a conducting wire. The exhaust method overcomes the limitation that the high-temperature exhaust of metal cannot be realized because glass cannot bear high temperature by adopting the overall heating and exhaust method of the existing medium-temperature and high-temperature solar heat collector tube in a drying oven. The exhaust method and the exhaust device have the advantages of quickness, safety and energy saving during exhaust, simple equipment and the like. Especially, the exhaust of the metal part of the medium-temperature and high-temperature solar heat collector tube is more thorough, the vacuum life of the medium-temperatureand high-temperature solar heat collector tube is increased, the cooling time during exhaust is shortened and the production efficiency is improved.
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Description

Technical field

[0001] The present invention relates to the field of solar heat utilization, and more specifically, the present invention relates to a method and device for exhausting medium and high temperature solar heat collecting pipes. Background technique

[0002] Solar energy is the most important basic energy source among all kinds of renewable energy. It has the advantages of abundant resources, inexhaustible, inexhaustible, and will not pollute the environment and destroy the ecological balance. Therefore, as fossil fuels are decreasing year by year and the international energy situation is becoming increasingly severe, the development and utilization of solar energy is one of the important ways to achieve diversification of energy supply and ensure energy security. Concentrator-type medium and high temperature solar collector tubes can be applied in the fields of industrial heating and power generation. It is an important development direction of the solar thermal indu...

Examples

Embodiment 1

[0040] Such as figure 1 , 3 , 4, the connecting conductive tool 3 is horizontally fixed on the bracket 2, and the connecting conductive tool 3 is a semi-cylindrical body with an outer radius equal to the inner radius of the metal inner tube 11 (e.g. image 3 , 4 (Shown), the surface is flat without pits, stainless steel, the same material as the metal inner tube 11; the main body of the bracket 2 is stainless steel, and the insulating part is ceramic to ensure the rigidity and insulation of the bracket 2; install the medium and high temperature solar collector tube in On the bracket 2, the connecting conductive tool 3 is fixed in close contact with the inner wall of the metal inner tube 11. Adjust the position to ensure that the tail pipe 13 is vertically downward; the wire 10 is embedded in the connecting conductive tool 3 and fixed with bolts, and the wire 10 is made of copper tape Or copper rod, plug both ends of the medium and high temperature solar collector tube 1 with asbe...

Embodiment 2

[0042] Such as figure 2 , 5 As shown, the heat preservation tool 5 is fixed on the bracket 2. The heat preservation tool 5 is made of high temperature resistant mica board, filled with 10mm thick insulation cotton, the main body of the bracket 2 is stainless steel, and the contact between the bracket 2 and the glass outer tube 12 is wrapped with asbestos tape Wrap; install the medium and high temperature solar collector tube on the bracket 2, adjust the position to ensure that the tail pipe 13 is vertically downward; plug the two ends of the medium and high temperature solar collector tube 1 with asbestos plug 4, and use the heat preservation tool 5 to remove the medium and high temperature solar energy The heat collection tube 1 is wrapped; one side of the connecting conductive tool 3 is in close contact with the outer wall of the metal inner tube 11, and the other side is connected to the wire 10. The connecting conductive tool 3 is two semicircles similar to flanges (such as ...