Detailed introduction of mechanical seal and use of mechanical seal

Detailed introduction and use of mechanical seal




2021-06-25 10:52






Introduction of pump mechanical seal:

The reliability of the pump depends to a large extent on the mechanical seal. In petrochemical enterprises, most of the fluids handled are flammable and explosive. Once the mechanical seal fails and leaks, it will not only pollute the environment, affect human health, but also cause fire. , explosions and other major accidents. For mechanical seals, we mainly start with the selection of seal structures for mechanical seals used in petroleum refining pumps under different working conditions, so as to reduce the failure rate of seal applications and improve application reliability.

1. The use of mechanical seals for high-temperature hot oil pumps: high-temperature hot oil pumps mainly include constant-bottom pumps, reduced-bottom pumps, and catalytic slurry pumps. These pumps are characterized by high temperature (370°C-400°C), high oil viscosity, There are impurities in the bottom of the tower.

2. The use of mechanical seals for gasoline and diesel pumps: the mechanical seals of this type of pump adopt a static structure (the pump with a temperature higher than 200°C adopts a bellows structure). One is to avoid the heat generated by high-speed stirring; the other is to prevent the spring from transmitting torque.