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US 2020/0340505 A1Published application
Leak detection
AssigneeClaverham Limited
InventorsPaul R. Brewer, Reg R. Raval
Life of this patent
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Abstract
A pressure detection device is mounted within an actuator housing between a piston rod and the housing, to receive fluid leaked past a seal, via a bore in the housing. The pressure detection device is configured to provide an output indicative of the pressure or flow of the leaked fluid in the bore. Thus, the leaked fluid diverted via the bore operates the pressure detection device to provide an output indicative of leakage.
Claims11
A hydraulic system comprising:
- a hydraulic actuator comprising:
- an actuator housing;
- an actuator piston rod (2) axially moveable within the actuator housing;
- a chamber in the housing to which pressurised fluid is provided to cause movement of the piston rod relative to the housing;
- a bore through the housing;
- and
- a first seal between the piston rod and the actuator housing arranged to prevent leakage of pressurised fluid from the chamber, wherein the seal is positioned between the chamber and the bore along the axial direction of the housing, such that fluid passing the first seal from the chamber is directed through the bore;
- and
- the hydraulic system further comprising a pressure detection device arranged to detect pressurised fluid exiting the bore and to provide an output indicative of the flow of the fluid exiting the bore.
6 more elements
A method of detecting leakage in a hydraulic system, comprising:
- diverting leaked fluid through a bore to a pressure detection device comprising an indicator responsive to and indicative of the pressure of the leaked fluid.
Dependencies are inferred from the claim text.