Requirements that should be met during the trial operation of centrifugal pumps

What needs to be met during the trial operation of the centrifugal pump [Participant question] What needs to be met during the trial operation of the centrifugal pump? [Answer] 1. The fixed connection parts should not be loose; 2. The operation of the rotor and the parts of the moving seal factory should be normal, and there should be no abnormal noise and conflict appearance; 3. The operation of the auxiliary system should be normal; the pipeline connection should be strong Leakage; 4. The temperature of the sliding bearing should not be greater than 70°C, the temperature of the rolling bearing should not be greater than 80°C, and the temperature of the special bearing should conform to the rules of the equipment technical documents; 5. The lubricating oil temperature, sealing liquid and cold at each smooth point The temperature of the cooling water in the mechanical seal factory should conform to the rules of the equipment technical documents; the smooth oil must not have the appearance of leakage and foggy oil injection; 6. The safety maintenance of the pump and the electric control device and the appearance of each part should be sensitive, accurate, and Reliable; Seven, the leakage of the mechanical seal should not be greater than 5mL/h, and the leakage of the mechanical seal for the packing seal should not be greater than the rules in the table below, and the temperature rise should be normal; impurity pumps and transportation are toxic, harmful, and flammable For pumps with explosive and other media, the leakage of the seal should not be greater than the designed rule value; 8. For centrifugal pumps with a specific gravity of less than 1, the current of the motor should not exceed the extra value and the water flow rate when using water for trial operation. It should not be less than 20% of the additional value; for pumps that are operated with toxic, harmful, flammable, explosive, particulate and other media, the trial operation should conform to the rules of the equipment skill document; 9. Cryogenic pumps must not be operated under economical conditions; 10. For pumps that need to measure the vibration value at the bearing body, they should be measured under the condition of no cavitation during the operation. The effective value of the vibration speed can be measured in accordance with Appendix 2 of this standard; 11. The pump shall be tested continuously at additional operating conditions. The operation time should not be less than 2h; the test operation time of high-speed pumps and special pumps should conform to the rules of the equipment skill file. The above content is organized based on the problems encountered by the students in their practical work for reference. If you have any problems, please communicate and correct them in time. Keywords: seal factory, mechanical seal factory, pump mechanical seal