SYSTEM OF HYDROPERCUSSION DEVICES Russian patent published in 2021 - IPC E21C37/00 E21C25/02 

FIELD: hydropercussion devices.

SUBSTANCE: invention relates to systems of hydropercussion devices (HPD). The HPD contains a pressure head and a drain line and a common base with hydraulic shock devices installed on it, which can be switched on separately under the action of a given static compression force of their tool. The hydraulic shock devices are connected by inputs to the pressure line through a control unit consisting of a flow regulator at the inlet and valves for switching on hydraulic shock devices at the outlet, and the outputs are connected in parallel to each other and connected to the drain line. The flow regulator is made in the form of a series-connected constant pressure differential valve and a nonlinear throttle and is connected inlet to a pressure line, and an outlet to parallel connected inputs of valves for switching on hydraulic shock devices, and the output of each of these valves is connected to the inlet of one hydraulic shock device.

EFFECT: invention expands the capabilities of the HPD by ensuring a constant fluid flow rate, regardless of the temperature, viscosity and pressure of the fluid flow entering the system of hydropercussion devices through the flow regulator, stabilizing the pre-impact speed and frequency of impacts of hydropercussion devices, and by ensuring both guaranteed simultaneous stable operation of all hydropercussion devices, and and stable operation of only some of them when changing the geometry of the destroyed rock mass.

1 cl, 1 dwg