Patent application title: VALVE ACTUATOR
Inventors:
Frederic Denat (St Just St Rambert, FR)
Mourad Rezig (Valence, FR)
Assignees:
INTERTECHNIQUE
IPC8 Class: AF16K3100FI
USPC Class:
25112901
Class name: Valves and valve actuation electrically actuated valve
Publication date: 2013-12-26
Patent application number: 20130341542
Abstract:
The valve actuator (1) includes a housing (2), a motor (4) coupled to the
valve, wherein rotation of the motor (4) changes the position of the
valve from a first position in which fluid flow may occur along at least
one path and a second position in which fluid flow is either blocked or
may occur along at least one second path, said motor (4) being normally
supplied with electrical power from a main source of electrical power, at
least one sensor (24,132) configured to detect the position of the valve
and/or the valve speed, a switch (16) controlling the delivery of
electrical power to the motor (4), and a power circuitry (19) connected
to the switch (16). The valve actuator further includes a controller (20)
connected to the at least one sensor (24,132) and to the power circuitry
(19), said controller (20) collecting in real time data relative to the
position and/or the speed of the valve and data relative to the power
setting, calculating the position and/or speed correction in pro rata to
errors between the collected data relative to the position and/or the
speed of the valve and collected data relative to the power setting, and
sending a new power setting to the power circuitry (19), wherein the
power circuitry (19) amplifies the controller signal.Claims:
Description:
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