Device and method for protecting solar Stirling engine heat absorber

Abstract

The invention discloses a device for protecting a solar Stirling engine heat absorber. The Stirling engine comprises a heat absorber, wherein the heat absorber is provided with a daylight opening (2). The protecting device comprises at least one light-tight cover plate (3), wherein the cover plate (3) is in rotary connection with a front body (16) of the heat absorber, so that the cover plate (3) can be rotated to a first position for shading the daylight opening (2) or rotated to a second position for uncovering the daylight opening (2). By using such structure, the cover plate can be rotated to the first position in emergency, so that the purpose of shading the daylight opening is achieved, and light energy gathered by a light-gathering device on a heat absorption pipe can be cut off, thereby achieving an effect of protecting the heat absorption pipe and greatly prolonging the service life of the heat absorber. The invention also discloses a method for protecting the solar Stirling engine heat absorber.

Description

technical field [0001] The invention relates to the technical field of solar power generation, in particular to a protection device and a protection method for a heat absorber of a solar Stirling engine. Background technique [0002] The utilization of solar thermal power generation has more and more important social and economic significance. An important technical route for solar thermal power generation is the dish-type Stirling system, which uses a dish-type concentrator with a Stirling engine. This method has very flexible modular deployment capabilities and high light The heat conversion efficiency and high utilization factor have received extensive attention and attention. [0003] In the dish-type Stirling solar thermal power generation system, there are a series of processes of light energy, heat energy, mechanical energy, and electric energy conversion, and the Stirling engine is the core component that completes the conversion of light energy to heat energy and t...

AI Technical Summary

Problems solved by technology

Once the focal spot generated by the concentrator needs to be removed from the daylight opening of the heat absorber, it will take a long time, even if the rotation speed of the power unit is increased, the focal spot cannot be completely removed in just a few seconds The light opening of the engine heat sink keeps the engine in a safe state

[0007] In view of this, in view of the above technical problems, it is urgent to find another way to design a protection device for the heat absorber of the solar Stirling engine, so as to quickly cut off the light energy that the concentrator gathers on the heat absorber tube of the heat absorber in an emergency. , to avoid further heating of the heat sink and cause overheating damage

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