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The normal start sequence of the pipe pump
The normal start-up of the pipeline pump is crucial, which directly affects the damage and service life of the pipeline pump. Pipeline pump start preparation: 1), test the motor steering is correct, from the top of the motor to the pump as a clockwise rotation, the test time is shorter, so as to avoid mechanical seal dry wear. 2), open the exhaust valve so that the liquid filled the entire pump, to be closed after the exhaust valve. 3), check whether the normal parts. 4), hand-crank the pump so that the lubricating liquid into the mechanical seal face. 5), high-temperature type should be preheated, the heating rate of 50 ℃ / h, to ensure uniform heating ministries. Pipeline pump start: 1), fully open the inlet valve. 2), close the discharge pipe valve. 3), start the motor, observe the pump is running correctly. 4), adjust the outlet valve opening to the required conditions, such as users at the pump outlet with a flow meter or pressure gauge, the outlet valve should be adjusted by the opening of the pump performance parameters listed in the rated point on the operation, such as When the user does not install the flow meter or pressure gauge at the outlet of the pump, adjust the outlet valve opening to measure the motor current of the pump so that the motor runs within the rated current. Otherwise, the pump will be overloaded (ie, run at high current) Motor burn out. Adjust the outlet valve open large and small and pipeline conditions. 5) Check the shaft seal leakage, the normal mechanical seal leakage should be less than 3 drops / min. 6), check the motor, bearing temperature rise ≤ 70 ℃. Pipeline pump parking: 1), the first high-temperature cooling, cooling temperature ≤ 10 ℃ / min, the temperature dropped to below 80 ℃, to stop. 2), close the discharge pipe valve. 3), stop the motor. 4), close the inlet valve. 5), such as long-term parking, the pump liquid should be exhausted.