Pressurized water reactor voltage stabilizer, surge pipe of pressurized water reactor voltage stabilizer and pressurized water reactor voltage stabilizer assembling method

The invention relates to a pressurized water reactor voltage stabilizer, a surge pipe thereof and a pressurized water reactor voltage stabilizer assembling method, one end of the surge pipe extends into the pressurized water reactor voltage stabilizer, the surge pipe comprises an inner pipe and an outer pipe, and a thermal insulation cavity is formed between the inner pipe and the outer pipe. According to the surge pipe with the double-layer pipe wall, the heat insulation cavity is formed between the two layers of pipe walls, heat transfer inside and outside the surge pipe can be isolated, thermal fatigue of the surge pipe caused by temperature difference change inside and outside the surge pipe is avoided, and then the service life of the surge pipe and the service life of the pressurized water reactor voltage stabilizer are prolonged. 本发明涉及一种压水堆稳压器及其波动管和压水堆稳压器装配方法，所述波动管的一端延伸至所述压水堆稳压器内，所述波动管包括内管以及外管，所述内管与所述外管之间形成隔温腔室。本发明通过构造一种具有双层管壁的波动管，在两层管壁之间形成隔温腔室，可以隔绝波动管内外的热传递，避免波动管内外温差变化导致波动管产生热疲劳，进而提高波动管以及压水堆稳压器的使用寿命。