Expansion compensating assembly for solar vacuum heat collecting tube

Abstract

The invention discloses an expansion compensation component for an evacuated solar collector tube, and belongs to the technical field of photo-thermal utilization of solar energy. The expansion compensation component comprises a corrugated tube, an annular metal groove, a metal end cover, a metal liner tube, a vibration buffer bracket and a corrugated tube shield cover. According to the expansion compensation component, the expansion difference of an inner metal tube and a cover glass tube can be compensated during the using process, the vibration of the cover glass tube can be buffered through the vibration buffer bracket, the dust particles are prevented from entering between the corrugated tube and the metal tubes, the risk of vacuum leakage caused by dust particle abrasion is reduced, the situation of vacuum leakage caused by the fact that a condensed light illuminates the corrugated tube is avoided through the added corrugated tube shield cover, and the mounting process of the collector tube is simplified.

Description

technical field [0001] The invention belongs to the technical field of solar light and heat utilization, and in particular relates to an expansion compensating component for a solar vacuum heat collection tube. Background technique [0002] With the rapid development of science and technology, people's demand for energy is increasing day by day. Solar trough thermal power generation has become a focus of attention. High-temperature solar vacuum heat collectors are the core components of trough solar power plants and have been extensively studied. The expansion compensating component is an important part of the vacuum heat collecting tube, which mainly compensates the expansion difference between the metal inner tube and the cover glass tube during the working process of the heat collecting tube. During the use of the heat collecting tube, the multi-phase coexistence of the heat transfer medium will cause vibration to the heat collecting tube, and this vibration is enough t...

AI Technical Summary

Problems solved by technology

During the use of the heat collecting tube, the multi-phase coexistence of the heat transfer medium will cause vibration to the heat collecting tube, and this vibration is enough to cause damage to the cover glass tube

Sand and dust in the environment will also enter the gap between the bellows of the expansion compensation component and the metal liner, which will cause wear on the bellows or the metal liner, resulting in vacuum leakage and failure of the collector tube

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