Starting feed water pump sealing ring structure for nuclear power station

• Main Authors: ZHANG XING, ZHOU JIE, ZHOU WENXIA, LE XIUHUI
• Format: Patent
• Language: English
• Published: 17.02.2016
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model provides a starting feed water pump sealing ring structure for nuclear power station, is that the sealing ring is the subdivision structure, comprises sealing ring A, sealing ring B, inner circle at the sealing ring is provided with the helicla flute, and sealing ring A's outer lane middle part is provided with annular groove, annular groove width size L1, sealing ring B's outer lane middle part is provided with the bead, and the bead both sides are provided with the recess of symmetry, and the bottom of two recesses is the fillet, bead width size L3, and the bead top separates with the impeller betweencenters has width size L2, sealing ring A's annular groove width size L1 equals the width of sealing ring B's bead width size L3 with bead both sides recess, the outer hub outer lane of impeller import is provided with the helicla flute, and this helicla flute revolves to on the contrary with the sealing ring helicla flute, forms double sealing. The utility model discloses simple structure installs and removes the convenience, adopts the helicla flute to reduce the spillage that sealing ring department, interstage, balance drum located, improves the volume efficiency of pump, popularizes and applies to have good economy and social.