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 pressure reducing valve 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 pressure reducing valve is connected by the inlet to the pressure line, and the outlet to the parallel connected inputs of the valves for switching on the hydraulic shock devices, and the outlet 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 the maintenance of the established constant flow rate and pressure of the fluid flow, reduced in relation to the pressure in the pressure line supplied to the system of hydropercussion devices through a pressure reducing valve, stabilizing the pre-impact speed and frequency of impacts of hydropercussion devices and by ensuring, as guaranteed, simultaneous stable operation of all hydropercussion devices devices, and stable operation of only some of them when changing the geometry of the destroyed rock mass.

1 cl, 1 dwg