Non-contact mechanical seal for pump
2018-10-16
Non-contact
mechanical seals for pumps:
At present, the most used pump in petrochemical production equipment is the centrifugal pump, which accounts for about 90% of the total consumption according to statistics. The most commonly used type of shaft end seal for centrifugal pumps is mechanical seal. For ordinary contact mechanical seals, under the condition of reasonable selection and correct installation and use, when the sealed medium is water, oil and similar media, the service life is generally not less than one year; the sealed medium is corrosive medium At the time, its use period is generally from six months to one year. For some more demanding use conditions, such as the medium is easy to vaporize, volatile, and high speed, high pressure, high temperature, low temperature and other working conditions, the life cycle of the mechanical seal will be shorter. 205 mechanical seal
As the petroleum and petrochemical industries are developing in the direction of pollution-free, long-term, low energy consumption, and high efficiency, the mechanical seal of centrifugal pumps is required to achieve zero leakage, pollution-free, and long life of the sealed medium; and the petroleum and petrochemical industries Most of the pumped fluids are flammable, explosive, highly toxic, severely polluted, etc., and ordinary contact mechanical seals cannot meet the above requirements.
The gas film seal of the non-contact mechanical seal adopts 'gas seal with gas' or 'liquid seal with gas' and the liquid film seal adopts 'liquid seal with liquid' can realize zero leakage and zero escape of the process medium. Compared with traditional contact mechanical seals, non-contact mechanical seals have a series of advantages such as low frictional power consumption, long service life, high working reliability, simple auxiliary systems, no environmental pollution, and low operation and maintenance costs. 962.html,
Oil film mechanical seal application The structure type of air film mechanical seal for pump
