NUCLEAR POWER STATION PRESSURIZER AND WATER SEALING DEVICE THEREOF

• Main Authors: RAN, Xiaobing, FU, Guanhua, HUANG, Xiaojie, LIANG, Guozhen, ZHOU, Zile, REN, Hongbing, LI, Quanbing, ZHOU, Peng
• Format: Patent
• Language: English; French; German
• Published: 13.10.2021
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The present invention provides a water sealing device of a nuclear power plant pressurizer including: an upper head body having an inner surface surfacing layer at an inner side of the pressurizer and a heat insulation layer at an outer side of the pressurizer; and a pressurizer safety valve connecting pipe extending upwardly and obliquely through the upper head body, the pressurizer safety valve connecting pipe being provided with a safety end, one end of the safety end being provided with a heat sleeve in the pressurizer safety valve, and the other end of the safety end being connected to a process pipe of the pressurizer safety valve. The safety end is provided with an elbow extending downwardly and obliquely into the pressurizer. A distal end of the elbow is vertically located above the lowest point of the upper inner sidewall of the elbow. A water sealing structure, in which the safety end of the pressurizer safety valve connecting pipe having the heat sleeve is connected to the elbow, achieves water sealing by heat releasing and condensation of saturated water vapor through the pressurizer safety valve, the pressurizer safety valve connecting pipe and the safety end, so that hydrogen leakage can be prevented.