Overload protection system and overload protection method suitable for Stirling engine

Abstract

The invention discloses an overload protection system and an overload protection method suitable for a Stirling engine. The protection system comprises a gas storage tank communicated with a thermal chamber of the Stirling engine. When the internal pressure of the Stirling engine exceeds P0, high temperature and high pressure gas in the engine is under constant pressure and enters the gas storagetank; and when the internal pressure of the Stirling engine is lower than P0, the high pressure gas is under constant pressure and enters the thermal chamber of the engine, which plays a role of overload protection of the engine. Solar energy is absorbed and utilized by arranging the gas storage tank, and compared with a direct heat removal method, the method makes the solar energy utilization rate higher and makes the output power of the engine higher.

Description

technical field [0001] The invention belongs to the Stirling engine technology, and relates to the Stirling engine overload protection technology, in particular to an overload protection system and an overload protection method suitable for the Stirling engine. Background technique [0002] The P-V diagram of the Stirling engine cycle is as follows figure 1 As shown, it can be seen from the figure that P1 is the highest pressure of the cycle, assuming that the pressure value of this state point exceeds the maximum pressure P0 allowed by the engine, then overload occurs. [0003] The current overload protection of the Stirling engine is mostly realized by cutting off the heat, changing the original cycle from 1→2→3→4 to 1″→2″→3→4, so that not only the engine output power has dropped significantly , And in the process of cutting off the heat, the solar energy is not utilized, which reduces the economy of the power station. Contents of the invention [0004] In view of the ...

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Problems solved by technology

[0003] The current overload protection of the Stirling engine is mostly realized by cutting off the heat, changing the original cycle from 1→2→3→4 to 1″→2″→3→4, so that not only the engine output power has dropped significantly , and in the process of cutting off the heat, the solar energy is not utilized, which reduces the economical efficiency of the power station

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