发明名称 |
CONVERTIBLE ROTARY SEAL FOR PROGRESSING CAVITY PUMP DRIVEHEAD |
摘要 |
A convertible rotary seal has a housing for receiving a polish rod. A mandrel is rotatably mounted in the seal housing and surrounds the polish ro d. A wear sleeve surrounding the mandrel engages a primary seal. A secondary seal engages the mandrel and polish rod and rotates therewith but may be converte d for use as a static seal if necessary. A locking mechanism selectively secures the mandrel in a stationary orientation with respect to the seal housing. Fluid that leaks pa st the primary seal will be detectable through an external orifice. If a leak in th e primary seal is detected via the external port, then the mandrel may be secured in a stationary orientation with respect to the housing and the secondary seal may be reconfigured to operate as a stationary seal until such time as the rotary sealing unit can be overhauled.
|
申请公布号 |
CA2515616(A1) |
申请公布日期 |
2006.02.10 |
申请号 |
CA20052515616 |
申请日期 |
2005.08.10 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
RIVARD, RAYMOND P. |
分类号 |
F04C15/00;E21B33/03;F16J15/34 |
主分类号 |
F04C15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|