Oil leakage detection apparatus
An alarm system is described for detecting presence of hydrocarbon substance comprising a rotary actuator mechanism including a rotatable shaft, the shaft having a longitudinally extending slot formed in the end extreme thereof, a fiber optic detector means with a light generator passing light through a fiber optic cable to a light detector, the detector being responsive to attenuation in the cable to cause an alarm to be generated, the cable being received in and extending through the rotor slot, and the rotary actuator comprising means response to exposure of the actuator to hydrocarbons to effect rotation of the actuator shaft from a predefined static position. A rotary actuator mechanism is also described which consists of a cylindrical rotor member, a body member, means for rotatably mounting the rotor member with respect to the body member, means applying a compressive force to a radialy disposed point on the rotor member, the force acting through the rotational axis of the rotor, shear pin means passing through the rotor parallel to the rotational axis of the rotor and radially disposed with respect to the rotational axis of the rotor, the shear pin means having end extremes extending from the rotor and received in the body member to constrain rotation of the rotor with respect to the body member, the shear pin means comprising a substance soluable in hydrocarbons.
- Assignee:
- NOV; NOV-85-014131; EDB-86-134108
- Patent Number(s):
- US 4590462
- OSTI ID:
- 5474517
- Resource Relation:
- Patent File Date: Filed date 28 Jan 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
LEAK DETECTORS
DESIGN
PETROLEUM
LEAKS
ACTUATORS
ALARM SYSTEMS
ATTENUATION
CABLES
COMPRESSION
FIBER OPTICS
HYDROCARBONS
ROTATION
ROTORS
SHAFTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MACHINE PARTS
MOTION
ORGANIC COMPOUNDS
022000* - Petroleum- Transport
Handling
& Storage
440300 - Miscellaneous Instruments- (-1989)