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

Abstract

A high-temperature-resistant high-strength sealing film structure between a glass tube and a metal piece. An annular surface of a metal film ring (3) is fused and fixed to the tube wall of a glass tube (1); the inner diameter of the metal film ring (3) is smaller than the inner diameter of the glass tube (1); the outer diameter of the metal film ring (3) is smaller than the outer diameter of the glass tube (1); the outer surface of a metal piece (2) is fixed to the inner surface of the metal film ring (3); the glass tube (1) is provided with two protrusions (5) having incline surfaces on the tube wall fused with the metal film ring (3); support rings (4) are arranged at the protrusions (5), respectively; the support rings (4) comprise annular surfaces with the inner diameter thereof matching the outer diameter of the metal piece (2); the inner surfaces of the annular surfaces of the support rings (4) are fixed to the outer surface of the metal piece (2); the annular surfaces of the support rings (4) are also connected to slopes formed by extending outwardly and bending; the slopes match the incline surfaces of the protrusions on the glass tube; the directions of the incline surfaces are provided opposite to each other, and the slopes of the two support rings (4) match the incline surfaces, respectively. The sealing film structure between a glass tube and a metal piece has excellent high-temperature-resistant performance, high strength, compact size, and is convenient to process, low in cost and universal.

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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