All newly purchased and
installed centrifugal pump products need to be tested in advance after
installation. The following centrifugal pump testing methods and precautions
should be followed when testing centrifugal pumps
1. Before starting the
centrifugal pump, it is forbidden to run the pump with no load and no load. The
liquid test shall be carried out according to the operating procedures specified
in the operating instructions of the centrifugal pump. For the forced
lubrication system, the temperature rise of the bearing oil of the centrifugal
pump shall not exceed 28 ℃, and the temperature of the bearing metal shall be
less than 93 ℃.
2. For centrifugal pump of oil ring lubrication or splash
lubrication system, the temperature of lubricating oil shall not exceed 39 ℃,
and the temperature of bearing parts shall be less than 82 ℃.
3. When testing
the centrifugal pump, the vibration value of the bearing of the centrifugal pump
should also be checked. The vibration standard of the bearing of the centrifugal
pump can refer to the vibration standard of the relevant petrochemical rotating
machinery.
4. During the test run of centrifugal pump, the operation of
centrifugal pump shall be very balanced and noiseless, the coolant and
lubricating oil system shall be normal, and the centrifugal pump and auxiliary
pipeline shall be free of leakage.
5. During the test run of the centrifugal
pump, attention should be paid to whether the current of the motor of the
centrifugal pump operates within the specified range. If the current exceeds the
specified range, it means that the head under the actual working condition is
lower than the pump head. At this time, it is recommended to turn down the
outlet valve to control the flow of the centrifugal pump so that its current can
be used within the rated current range.
6. Various seals and medium leakage
of centrifugal pump shall not exceed the following standard requirements:
(1)
Clean water centrifugal pump with mechanical seal: light oil 10 drops/min, heavy
oil 5 drops/min
(2) Multi stage centrifugal pump products with packing seal:
light oil 20 drops/min, heavy oil 10 drops/min
(3) For the magnetic drive
pump to transport toxic, harmful, flammable and explosive media, no visible
leakage is allowed.
Vacuum System Evacuation, Heating and Exhaust Technology to Introduction
No comments:
Post a Comment