Outer cover glass tube lens focusing narrowing and variable diameter all-glass vacuum heat collector tube

Abstract

A necking reducing all-glass evacuated collector tube adopting lens focus of a cover glass tube comprises the cover glass tube, an internal glass collector tube, a support elastic card, a getter and an exhaust nozzle; wherein, lenses are longitudinally arranged on the walls of the cover glass tube and the walls are arranged at two sides between the diameter and the parallel chord of the cover glass tube; the internal glass collector tube is coated with a heat absorption film layer; the glass tube head is formed by glass sintering and sealing; the sealed cover glass tube is soldered with a tail tube of the exhaust nozzle by glass; the support elastic card of the getter is installed; the internal glass tube is sheathed together with an external glass tube; the tube mouth is soldered by glass in an annular manner; the interlayer of the internal and external glass tubes is vacuumized; the exhaust nozzle is sealed and the getter is evaporated. By utilizing the functions of refraction and focusing of the cover glass tube and the sunlight on the cover glass tube, the light leakage problem of the all-glass evacuated collector tube is solved, dense arrangement of pipes is realized by utilizing necking reducing and the collector efficiency of the all-glass evacuated collector tube is dramatically improved in combination with other technologies.

Description

technical field [0001] The invention relates to an all-glass vacuum heat collecting tube with an outer cover glass tube lens focusing shrinkage and variable diameter, and belongs to the field of solar energy applications. Background technique [0002] Due to the existence of the vacuum interlayer in the existing all-glass vacuum heat collecting tube, the problem of light leakage through the vacuum interlayer cannot be solved, and due to the limitation of the installation method, it is difficult to achieve close packing, and the heat collection efficiency of the all-glass vacuum heat collecting tube is not high. . Contents of the invention [0003] In order to solve the above problems, an all-glass vacuum heat collecting tube with outer cover glass tube lens focusing shrinkage and variable diameter was invented. It can solve the light leakage problem of the all-glass vacuum heat-collecting tube through the refraction of the light by the lens, and greatly improve the heat-c...

AI Technical Summary

Problems solved by technology

[0002] Due to the existence of the vacuum interlayer in the existing all-glass vacuum heat collecting tube, the problem of light leakage through the vacuum interlayer cannot be solved, and due to the limitation of the installation method, it is difficult to achieve close packing, and the heat collection efficiency of the all-glass vacuum heat collecting tube is not high.

Images