Centrally activated pipe snubbing system
Abstract
An electromechanical pipe snubbing system and an electromechanical pipe snubber. In the system, each pipe snubber, in a set of pipe snubbers, has an electromechanical mechanism to lock and unlock the snubber. A sensor, such as a seismometer, measures a quantity related to making a snubber locking or unlocking decision. A control device makes an electrical connection between a power supply and each snubber's electromechanical mechanism to simultaneously lock each snubber when the sensor measurement indicates a snubber locking condition. The control device breaks the connection to simultaneously unlock each snubber when the sensor measurement indicates a snubber unlocking condition. In the snubber, one end of the shaft slides within a bore in one end of a housing. The other end of the shaft is rotatably attached to a pipe; the other end of the housing is rotatively attached to a wall. The snubber's electromechanical mechanism locks the slidable end of the shaft to the housing and unlocks that end from the housing. The electromechanical mechanism permits remote testing and lockup status indication for each snubber.
- Inventors:
-
- Richland, WA
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- OSTI Identifier:
- 865418
- Patent Number(s):
- 4511114
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16L - PIPES
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- centrally; activated; pipe; snubbing; electromechanical; snubber; set; snubbers; mechanism; lock; unlock; sensor; seismometer; measures; quantity; related; locking; unlocking; decision; control; device; makes; electrical; connection; power; supply; simultaneously; measurement; indicates; condition; breaks; shaft; slides; bore; housing; rotatably; attached; rotatively; wall; locks; slidable; unlocks; permits; remote; testing; lockup; status; indication; control device; power supply; electrical connection; rotatably attached; electromechanical pipe; simultaneously lock; pipe snubber; pipe snubbing; /248/188/
Citation Formats
Cawley, William E. Centrally activated pipe snubbing system. United States: N. p., 1985.
Web.
Cawley, William E. Centrally activated pipe snubbing system. United States.
Cawley, William E. Tue .
"Centrally activated pipe snubbing system". United States. https://www.osti.gov/servlets/purl/865418.
@article{osti_865418,
title = {Centrally activated pipe snubbing system},
author = {Cawley, William E},
abstractNote = {An electromechanical pipe snubbing system and an electromechanical pipe snubber. In the system, each pipe snubber, in a set of pipe snubbers, has an electromechanical mechanism to lock and unlock the snubber. A sensor, such as a seismometer, measures a quantity related to making a snubber locking or unlocking decision. A control device makes an electrical connection between a power supply and each snubber's electromechanical mechanism to simultaneously lock each snubber when the sensor measurement indicates a snubber locking condition. The control device breaks the connection to simultaneously unlock each snubber when the sensor measurement indicates a snubber unlocking condition. In the snubber, one end of the shaft slides within a bore in one end of a housing. The other end of the shaft is rotatably attached to a pipe; the other end of the housing is rotatively attached to a wall. The snubber's electromechanical mechanism locks the slidable end of the shaft to the housing and unlocks that end from the housing. The electromechanical mechanism permits remote testing and lockup status indication for each snubber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}