Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Reexamination Certificate
2006-02-07
2006-02-07
Yu, Justine R. (Department: 3751)
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
C251S129110, C251S315010
Reexamination Certificate
active
06994309
ABSTRACT:
An apparatus for the remote measurement, control, and supervision, via a wired or wireless network connection, of the flow of gas, allowing fully opening or closing a valve in case of an emergency or for administrative purposes. The apparatus also provides for flow pressure, barometric pressure, and a temperature compensated gas flow meter. The apparatus obtains the number of revolutions of a rotor which delivers a fixed amount of gas per revolution and compensates for gas bypassing the rotor. The apparatus is self-powered by the energy produced by an electric generator coupled to the flow measurement rotor. The surplus energy not used by the electronic components in measuring and reporting is stored for the operation of the rotary control valve. The apparatus is housed in a planar base plate that allows servicing from one side of the system. The apparatus uses an energy storage management system for the controlled charging and use of the apparatus in an intrinsically safe manner.
REFERENCES:
patent: 5427350 (1995-06-01), Rinkewich
patent: 6016832 (2000-01-01), Vars et al.
patent: 6337635 (2002-01-01), Ericksen et al.
patent: 6662821 (2003-12-01), Jacobsen et al.
Fristoe Jr. John K.
Torres Eugenio J.
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