Importance

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Abstract

A system for carrying out the stroke change of an individual pumping unit (IPU) comprising a hydraulic-mechanical wrench, a pneumatic striker, and a power source. The hydraulic-mechanical wrench includes a fixed fastening anchor to a double-acting hydraulic cylinder, a toothed wheel with a center recess for a nut wrench, and a pull chain. The pneumatic striker comprises a body housing a displaceable striking piston with a spring located between the back cover of the body and the piston, a normally open check valve, and a firing valve integrated into the body. The check valve is pneumatically piloted, taking pressure through a hose from the power source. The power source comprises an air compressor and a hydraulic pump connected to an incrementing tank, within which a piston separates the pneumatic circuit from the hydraulic one. It also includes an electrical/electronic circuit with a Programmable Logic Controller (PLC) that controls sequences and pressures, governs switches and buttons, and activates power relays of the equipment from a control panel. A procedure for carrying out the stroke change of an individual pumping unit (IPU) with the described equipment is also provided.

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First Claim