Pump motor protector with redundant shaft seal

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 273 KB
• Volume: 2009
• Category: Article
• ISSN: 1350-4789
• DOI: 10.1016/s1350-4789(09)70292-2

✦ Synopsis

A pressure balance and temperature compensation chamber for the shaft seal on a submersible electric motor is described. A chamber between two shaft seals has a flexible element for temperature compensation. A non-return valve allows fluid to be expelled from the chamber but not enter. A compensating element compensates pressure across the second shaft seal. Redundant seal components are also included.