Beyond Petroleum Equipment

25

2021

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01

What is the reason why the mud pump motor of non excavation equipment does not rotate?

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The mud pump, a non excavation equipment, is one of the main supporting equipment for geological exploration.

The mud pump, a non excavation equipment, is one of the main supporting equipment for geological exploration. Its main function is to supply flushing fluid (mud or clean water) to the wellbore during the core drilling process, so that it can circulate in the wellbore, bring drilling cuttings back to the ground, keep the bottom clean, cool and lubricate the drill bit and bit, prevent hole wall collapse, and assist in drilling. Therefore, mud fluid is often referred to as the "blood" of drilling, indicating its significant role. Therefore, the performance of non excavation mud pumps directly affects the overall drilling efficiency.
Therefore, special attention should be paid to repair and maintenance during daily use, especially for some common faults. It is important to avoid their occurrence, analyze their causes, and be able to solve them. This can save time and improve efficiency during non excavation construction. For example, the mud pump motor of non excavation equipment does not rotate
1) Cause analysis
The diesel engine speed of the main pump station is too low, the fuel supply is insufficient, and the supply pressure of the hydraulic system is too low; The hydraulic system of the main pumping station of the mud pump for non excavation equipment malfunctions or the pressure of the overflow valve is lowered, resulting in severe internal leakage; Insufficient supply pressure; Hydraulic motor failure; The shift gear is not installed in place and the positioning device is not locked for the driving gear; Faulty or damaged crankshaft or connecting rod.
2) Discharge method
Increase the speed of the diesel engine in the main pumping station of the non excavation mud pump (n greater than or equal to 1500 r/min), increase the oil supply of the electric motor, and increase the effective working pressure of the hydraulic system (above 10MPa); Check and eliminate faults in the hydraulic system provided to the mud pump of non excavation equipment (contact the host maintenance personnel for resolution); Check and eliminate faults in the hydraulic motor on the mud pump of non excavation equipment; Move the gear into position and lock the positioning device again; Check and replace damaged parts.

 

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