Title:
ELECTRONIC PRESSURE INDEPENDENT CONTROLLER FOR FLUID FLOW CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2013/043631
Kind Code:
A3
Abstract:
A flow valve with an integral pressure-independent fluid flow controller for controlling the flow of fluid and corresponding methods for controlling fluid flow are provided. The flow valve comprises a valve body, one or more valve blades arranged on the valve body for controlling fluid flow in a duct section, an actuator for modulating the one or more valve blades, a flow sensor or sensors for sensing fluid flow, a tuning calculation module adapted for determining or monitoring a pressure drop across the valve body and for calculating tuning constants based on the pressure drop, and a controller for controlling the actuator based on a difference between a fluid flow setpoint and the sensed fluid flow in accordance with the tuning constants. The pressure drop may be determined from an algorithm based on blade position and sensed fluid flow, or may be directly measured.
Inventors:
GEORGE FRED ALBERT (US)
O'ROURKE BRIAN J (US)
SCOTT LEE D (US)
O'ROURKE BRIAN J (US)
SCOTT LEE D (US)
Application Number:
PCT/US2012/055969
Publication Date:
May 15, 2014
Filing Date:
September 19, 2012
Export Citation:
Assignee:
ACCUTROL LLC (US)
GEORGE FRED ALBERT (US)
O'ROURKE BRIAN J (US)
SCOTT LEE D (US)
GEORGE FRED ALBERT (US)
O'ROURKE BRIAN J (US)
SCOTT LEE D (US)
International Classes:
F16K11/00; F24F13/10
Foreign References:
| US20040182943A1 | 2004-09-23 | |||
| US20010042792A1 | 2001-11-22 | |||
| US20040064204A1 | 2004-04-01 | |||
| US20070090199A1 | 2007-04-26 | |||
| US20080216500A1 | 2008-09-11 | |||
| US20050165535A1 | 2005-07-28 |
Attorney, Agent or Firm:
MCALLISTER, Douglas, M. (LLC755 Main Street,Building, Monroe Connecticut, US)
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