Protective cover for coupler of electric main feed pump of nuclear power plant

• Main Authors: QIAO YAWEN, WU JIONG, ZHANG ZHENTAN, YANG FUJIANG, WANG YUEFEI, LIU ZHENHUA, ZHOU JIDONG
• Format: Patent
• Language: Chinese; English
• Published: 26.05.2023
• Subjects: BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a protective cover for a coupling of an electric main feed pump of a nuclear power plant. The protective cover comprises a cover body and a check ring, wherein the cover body wraps the coupling; the check ring surrounds the periphery of a rotating shaft of the coupling; the check ring is arranged on the inner side of the end part of the cover body or is integrated with the end part of the cover body; the cover body comprises a plurality of ventilation holes and at least one ventilation opening. The ventilation hole is formed in a shell of the cover body; the ventilation opening is formed in one side of a shell of the cover body, and the radial depth of the ventilation opening is lower than the anti-flash outer edge of the coupler. The nuclear power plant electric main feed pump coupler protection cover thoroughly solves the problem of oil throwing of a bearing chamber oil seal caused by a coupler, can prevent a coupler rotating shaft from being broken and flying out during high-spe