Mechanical seals for pumps:

The reliability of the pump depends to a large extent on the mechanical seal. In petrochemical enterprises, once the mechanical seal fails and leaks, it will not only pollute the environment and affect human health, but also cause major accidents such as fire and explosion. We mainly start from the selection of sealing structures under different working conditions of mechanical seals for petroleum refining pumps, reduce the failure rate of mechanical seals in sealed reactors, and improve the reliability of use.

1. Mechanical seals for high-temperature thermal oil pumps

High-temperature hot oil pumps mainly include mechanical seal standard constant bottom pumps, reduced bottom pumps, and catalytic oil slurry pumps. These pumps are characterized by high temperature (370°C-400°C), high oil viscosity, and impurities at the bottom of the tower.

2. Mechanical seals for gasoline and diesel pumps

The mechanical seal of this type of pump adopts a stop structure (the pump with a temperature higher than 200 ℃ adopts a bellows structure). One is to prevent the heat generated by high-speed stirring; the other is to prevent the spring from transmitting torque.

3. Mechanical seals for low-temperature light hydrocarbon pumps

The anti-pumping ability of the mechanical seal of the light hydrocarbon pump is increased by increasing the length of the tail of the non-compensating ring and selecting the structure of the auxiliary back cover. The pressure of the seal chamber is increased by flushing to prevent the seal dry conflict caused by the squeegee. The self-flushing method can not only ensure a high medium pressure in the sealed cavity, prevent the medium from vaporizing or gas accumulation in the sealed cavity, but also take away the conflict heat generated by the conflicting pair in time, effectively controlling the temperature rise of the sealing end surface and increasing the liquid area, improve the conflict situation.

The valve:

Valves are an indispensable part of petrochemical refining equipment. There are many types and quantities of valves used in chemical production. Most of the media in chemical products are highly corrosive, toxic or flammable, and explosive. When the valve leaks, it will not only cause serious problems. The waste of raw materials, energy and products, and also have a serious impact on the environment and even leads to serious safety accidents. Therefore, we must and should pay attention to the problem of valve leakage in the petrochemical production process.

Common type seals:

With the continuous progress of static sealing technology, rubber sealing products and gasket materials and structures have developed by leaps and bounds, and are widely used in various sealing fields, including petrochemical fields, and their subsidiary industries will also be encouraged. , the development prospects of the entire industrial chain are extremely impressive.