Rotational-symmetry loop heat pipe for accumulative temperature difference vibration

The invention provides a loop heat pipe. The loop heat pipe comprises a middle evaporating pipe, a left collecting pipe, a right collecting pipe and a pipe group, wherein the pipe group comprises a left pipe group and a right pipe group; the left pipe group communicates with the left collecting pipe and the middle evaporating pipe, and the right pipe group communicates with the right collecting pipe and the middle evaporating pipe, so that the middle evaporating pipe, the left collecting pipe, the right collecting pipe and the pipe group form a heating fluid closed cycle; a heat source is arranged in the middle evaporation pipe; a temperature sensing element is arranged in the loop heat pipe and used for detecting the temperature in the loop heat pipe; the temperature sensing element is indata connection with a controller; the controller extracts temperature data according to a time sequence, obtains temperature difference or temperature difference change accumulation through comparison of the temperature dat