Flow ans seismic sensitive safety valve for gaseous fluids
Patent
·
OSTI ID:6915352
This patent describes a flow and shock sensitive self-closing safety valve for a gas pipeline. It comprises: a valve body of non-magnetic material having inlet and outlet flow passageways and an annular, generally horizontal valve seat between them; a valve element of a magnetic material above the valve seat; a permanent magnet in the valve body above the valve element and movable therein toward and away from the valve seat to adjust the magnetic attraction between the magnet and the valve element; and spring means biasing the magnet away from the valve element. The spring means being overcome to enable movement of the magnet to engage the valve while on the valve seat.
- Assignee:
- NOV; NOV-90-008335; EDB-90-075793
- Patent Number(s):
- A; US 4883081
- Application Number:
- PPN: US 7-334172--A
- OSTI ID:
- 6915352
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
CONTROL EQUIPMENT
DESIGN
ENERGY SOURCES
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FLOW REGULATORS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
PIPELINES
RELIEF VALVES
SEISMIC EFFECTS
TRANSPORT
VALVES
032000* -- Natural Gas-- Transport
Handling
& Storage
CONTROL EQUIPMENT
DESIGN
ENERGY SOURCES
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FLOW REGULATORS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
PIPELINES
RELIEF VALVES
SEISMIC EFFECTS
TRANSPORT
VALVES