Life detection method of mechanical seal of nuclear-stage centrifugal pump based on equipment maintenance data

• Main Authors: ZHANG MIN, YUE CHUNSHENG, LIU JIAN, NIE CHENGPING, LI JIANCHUN, MA HAOJUN, YANG HONGXIANG, LI YUN, LYU GANG, LIU XIAONIAN, HU YUJIE, WANG MIAOMIAO
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2019
• Subjects: BLASTING; HEATING; LIGHTING; MEASURING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; PHYSICS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; WEAPONS

The invention relates to the technical field of reliability management of nuclear power plant equipment, and particularly discloses a seal life detection method of mechanical seal of a nuclear-stage centrifugal pump based on equipment maintenance data. The method comprises the following steps that 1, key parameters of the life change of the nuclear-stage centrifugal pump is selected; 2, the life influence factor data of the mechanical seal of the nuclear-stage centrifugal pump during all previous overhaul period of the nuclear power plant is collected; 3, trend fitting is performed on the lifeinfluence factors of the nuclear-stage centrifugal pump; 4, a trend fitting of the life of the mechanical seal of the nuclear-stage centrifugal pump is performed by utilizing the trend fitting curveof the life influence factors of the nuclear-stage centrifugal pump; and 5, and the life of the mechanical seal of the nuclear-stage centrifugal pump ia predicted according to the trend fitting curveof the life of the mechanic