The trial run of the pump should meet the following requirements: ①the steering of the driving machine should be opposite to that of the pump; ② the steering of the pipe pump and the coaxial pump should be identified; ③ the fixed connecting parts should be free of looseness; Specifications and quantity should be consistent with the rules of equipment technical documents; ④ parts with pre-smoothing requirements should be discontinued in accordance with the rules of pre-smooth; ⑤ all indicating instruments, safe maintenance and installation should be sensitive, accurate and reliable; ⑥ crank should be sensitive, no abnormalities ; ⑦ cryogenic pump before commissioning should stop the pump body preheating, the average temperature should rise, the temperature rise per hour should not exceed 500 ℃; pump body surface with a mandatory medium outlet of the process pipe temperature difference should not exceed 4090; ⑧ settings Eliminate the impact of temperature rise of the convergence installation, setting the bypass connection installed to provide cooling water. Centrifugal pump operation should pay attention to the following points: ①stop running without water, do not adjust suction port to reduce displacement, to stop running at too low a flow rate; ② monitor the operation of the process, completely prevent stuffing box leaks, when changing the stuffing box With a new packing; ③ to ensure that the mechanical seal with plenty of flushing water, water-cooled bearings to stop the use of excessive water flow; ④ smoothing agent do not use too much; ⑤ stop the reflection according to the recommended cycle. Establish operational records, including hours of operation, packing adjustments and changes, adding lubricants and other maintenance measures and time. Centrifugal pump suction and discharge pressure, flow, power input, lotion and bearing temperature and vibration conditions should be recorded on a permanent basis to record the rotor pump.
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