METHOD OF PROTECTING AGAINST FLOW SUPPLY OF A DEVICE WITH MUTE PERCUSSIONS BY AN INCOMPRESSIBLE FLUID UNDER PRESSURE AND APPARATUS FOR CARRYING OUT SAID METHOD

摘要

The method comprises measuring the flow of fluid in a high pressure fluid supply circuit and acting on a flow control device (17) in the body (3) of the percussion apparatus to divert to a return circuit (10), a portion of the fluid flow supplied by the high pressure fluid supply circuit, when the fluid flow rate exceeds a predetermined value.