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US 2021/0278012 A1Published application
Fluid drive valve
AssigneeFujikin Incorporated
InventorsTaichi Kitano, Tsuyoshi Tanikawa
Life of this patent
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Abstract
Provided is a fluid drive valve, which facilitates continuation of monitoring all the time, and which allows detection of leakage of an operation fluid from an actuator even when the actuator is operating. A pressure sensor is disposed on a pressure receiving surface, inside an actuator, on which pressure of an operation fluid acts. A pressure sensor is disposed on a non-pressure receiving surface, inside the actuator, on which pressure of the operation fluid does not act. In addition, a position sensor is disposed to detect the position of a valve stem.
Claims5
A fluid drive valve comprising:
- a body provided with a fluid passage;
- and an actuator configured to open and close the fluid passage by introduction and discharge of an operation fluid, respectively,
- the fluid drive valve being provided with a pressure sensor on each of a pressure receiving surface, inside the actuator, on which pressure of the operation fluid acts, and a non-pressure receiving surface, inside the actuator, on which pressure of the operation fluid does not act.
Dependencies are inferred from the claim text.