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When we use gear pumps, we occasionally encounter some failures. For example, when the gear pump of the drilling rig is used for a long time, abnormal heating occurs. Then what is the cause? What is the elimination method? Let us understand it together!
Reasons for abnormal heating of the gear pump of the drilling rig
1. Overheating of sliding parts caused by improper selection of gear pump clearance;
2. The assembly quality is too poor, and the coaxiality of the rotating part fails to meet the technical requirements, so the operation is not smooth;
3. The pump bearing is of poor quality, broken during assembly, or not cleaned during installation, resulting in poor operation;
4. The quality of the oil used is too poor;
5. The diameter of the oil suction pipe is too small, and the oil suction resistance is large;
6. The external heat source is high and the heat dissipation conditions are not good.
Elimination method of abnormal heating of gear pump of drilling rig
1. Disassemble and clean, re-measure the gap of the pump, and re-fit to reach the specified gap;
2. Disassemble, clean and reassemble to meet the technical requirements;
3. Disassemble the pump for inspection, replace the damaged bearings, and reassemble;
4. Choose or change oil according to pump requirements;
5. Thicken the pipe diameter, reduce the elbow, and reduce the oil suction resistance;
6. Eliminate external influences and add heat insulation measures.