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Title: 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:
 [1]
  1. (Richland, WA)
Issue Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA
OSTI Identifier:
865418
Patent Number(s):
4511114
Assignee:
United States of America as represented by United States (Washington, DC) PNNL
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}
}

Patent:

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