Metal glass composite heat conduction pipe and manufacturing method therefor

Abstract

The present invention discloses a metallic glass compound heat conducting pipe arranged inside a vacuum tube solar collector and the manufacturing method. The metallic glass compound heat conducting pipe is formed by casting a metal pipe and a glass pipe, the middle part of the metal pipe is a net shaped section, which is a network structure, the glass pipe is covered on the metal pipe, and the two ends of the metal pipe are exposed, and the net shaped section is also covered, one end of the metal pipe is connected with a metallic heat conducting pipe of the vacuum tube solar collector, a glass end cap is arranged on the connection of the glass pipe and the end surface of a vacuum glass pipe. By using the metallic glass compound heat conducting pipe, the complex process of metallic glass heat sealing can be avoided, and the manufacturing method is simple, the expensive metallic glass heat sealing equipment is not needed, the use-cost is reduced, and the malfunction is uneasy to occur, meanwhile, the net shaped section is provided on the metallic pipe covered by the glass pipe, thereby the strength of the glass is enhanced, and the pressure bearing ability of the glass is also improved.

Description

technical field [0001] The invention relates to energy collection equipment, in particular to a vacuum tube solar heat collector, in particular to a heat conduction tube arranged in the vacuum tube solar heat collector and a manufacturing method thereof. Background technique [0002] In the prior art, the vacuum tube solar heat collector is mainly composed of a vacuum glass tube, a metal heat absorbing plate and a metal heat conducting tube. Weld the metal heat-conducting tube under the metal heat-absorbing plate and put it in the vacuum glass tube. The metal heat-absorbing plate can convert sunlight into heat energy and transfer it to the metal heat-conducting tube. In order to make the metal heat-conducting tube export the heat energy out of the vacuum glass tube, The two must be tightly combined to ensure the vacuum in the glass tube for heat insulation. For this reason, a metal end cover is provided at the interface between the metal heat pipe and the vacuum glass tube....

AI Technical Summary

Problems solved by technology

For this reason, a metal end cover is set at the interface between the metal heat pipe and the vacuum glass tube. The combination of the metal end cover and the glass end surface needs to be realized through the process of heat sealing of metal glass under high temperature and high pressure environment. The sealing process is complicated, and the technical requirements are extremely high, resulting in high cost of use, and the current vacuum tube solar collectors can not fully guarantee the sealing of the metal end cover and the glass end face after working under harsh temperature conditions for a long time, and are prone to failure. Insulation Failure of Vacuum Glass Tubes

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