Solar heat-collecting tube expansion mechanism

Abstract

A solar heat-collecting tube expansion mechanism comprises a sliding rail, wherein the sliding rail is installed on a cross beam in a hanging mode, a sliding block is arranged inside the sliding rail and can slide freely inside the sliding rail, the sliding block is connected with the upper end of a connecting rod, a hoop is installed at the bottom of the connecting rod, a heat-collecting tube is fixed through the hoop, when a system is in the transition process from the cold state to the hot state and when the heat-collecting tube is expanded continuously, the sliding block moves along with the heat-collecting tube, when the system stops operation, with the retraction of the heat-collecting tube, the sliding block returns to the initial position, the heat-collecting tube is fixed, and simultaneously, the problem of thermal expansion of the heat-collecting tube can be solved, so that the heat-collecting tube can operate safely and stably. The mechanism solves the problem of high-temperature expansion of the heat-collecting tube effectively and is simple in structure and easy to implement.

Description

technical field [0001] The invention belongs to the field of solar thermal power generation, and in particular relates to an expansion mechanism of a solar heat collecting tube. Background technique [0002] Solar thermal power generation technology uses concentrators to gather solar energy and convert it into heat energy, and then generate high-temperature and high-pressure steam to drive steam turbines to generate electricity. [0003] Fresnel solar concentrating thermal power generation technology is a common form of solar thermal power generation at present. The mirror field composed of multi-faceted mirrors gathers the solar energy into a linear spot, and then uses the receiver to convert the light energy into heat energy. The fluid absorbs and transfers thermal energy to the heat exchanger. In the heat exchanger, the heat of the heat transfer fluid is used to heat the water to generate water vapor, and then use the water vapor to drive the steam turbine to generate po...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a solar thermal collector tube expansion mechanism, which effectively solves the problem of thermal expansion of the thermal collector tube, and has a simple structure and is easy to implement

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