发明名称 |
PUMP DRIVE HEAD WITH STUFFING BOX |
摘要 |
A pump drive head for a progressing cavity pump comprises a top mounted stuffing box rotatably disposed around a compliantly mounted standpipe with a self or manually adjusting pressurization system for said stuffing box. To prevent rotary and vertical motion of the polish rod while servicing the stuffing box, a polished rod lock-out clamp is provided with the pump drive head integral with or adjacent to a blow-out-preventer which can be integrated with the pump drive head to save space and cost. A centrifugal backspin braking system located on the input shaft and actuated only in the backspin direction and a gear drive between the input shaft and output shaft are provided.
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申请公布号 |
CA2710783(C) |
申请公布日期 |
2013.08.06 |
申请号 |
CA20012710783 |
申请日期 |
2001.06.11 |
申请人 |
OIL LIFT TECHNOLOGY, INC. |
发明人 |
HULT, VERN ARTHUR |
分类号 |
F04B47/02;E21B4/00;E21B33/03;E21B33/04;E21B43/12;F16J15/18;F16J15/46 |
主分类号 |
F04B47/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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