Pressure-compensated proportional flow control valve with an integrated turbine for flow rate sensing
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United States of America Patent
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Jun 20, 2023
Grant Date -
Dec 15, 2022
app pub date -
Feb 25, 2022
filing date -
Jun 11, 2021
priority date (Note) -
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Abstract
An example valve includes: a pressure compensation spool configured to be subjected to a first fluid force of fluid received at a first port acting in a proximal direction; a pressure compensation spring disposed in a pressure compensation chamber and applying a biasing force on the pressure compensation spool in a distal direction; a turbine configured to rotate as fluid flows through the valve; and a flow area configured to throttle fluid flow from the first port to the pressure compensation chamber, wherein fluid in the pressure compensation chamber applies a second fluid force on the pressure compensation spool in the distal direction, such that the pressure compensation spool moves to a particular axial position based on force equilibrium between the first fluid force, the second fluid force, and the biasing force to throttle fluid flow from the pressure compensation chamber to a second port.
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