Thin-film sealing-in structure of high-temperature-resistant and high-strength glass tube and metal piece

Abstract

The invention discloses a thin-film sealing-in structure of a high-temperature-resistant and high-strength glass tube and a metal piece. The annular face of a metal thin film ring is fixedly welded on the wall of the glass tube; an internal diameter of the metal thin film ring is less than an internal diameter of the glass tube; an external diameter of the metal thin film ring is less than an external diameter of the glass tube; the outer surface of the metal piece is fixedly arranged on the inner lateral face of the metal thin film ring; two bumps with the inclination face are arranged on the wall at which the glass tube is welded with the metal thin film ring; supporting rings are respectively arranged at the positions of the bumps; each supporting ring comprises an annular face with an internal diameter adaptive with an outer diameter of the metal piece; the inner lateral faces of the annular faces of the supporting rings and the outer lateral face of the metal piece are fixed; the annular faces of the supporting rings are further connected with slope faces formed by extending and bending outward; the slope faces are adaptive with the inclination faces of the dumps on the glass tube; the inclination faces are oppositely arranged; and the slopes faces of the two supporting rings are respectively matched with the inclination faces. The thin-film packaging structure provided by the invention has the characteristics of good high-temperature resistance, high strength, compact size, convenience in machining, low cost and strong generality.

Description

technical field [0001] The invention relates to a new type of sealing structure between glass and metal, specifically a film sealing structure of high temperature resistance and high strength glass tube and metal parts, which can be applied to metal and glass for sealing and in Products used at high temperatures, such as electronic tubes, lighting fixtures, solar vacuum collectors, etc. Background technique [0002] There are many sealing methods for glass and metal, but there are not many sealing methods that can be applied to high temperature environments. Among them, the film sealing method has better high temperature resistance, but there are problems that the film is easily oxidized and has low strength at high temperature. For example, the product described in the patent No. 201010528354.5 "A Straight-through Solar Vacuum Heat Collector" adopts a film sealing method, but its reinforcement structure is complicated, the glass tube is easily cracked at high temperature, a...

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Problems solved by technology

[0003] Purpose of the invention: The purpose of the invention is to provide a high-temperature-resistant, high-strength film sealing structure between glass tubes and metal parts to solve the problems of other sealing schemes such as complex structure, difficult processing, not compact enough size, and easy damage to the metal film.

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