1. Mechanical seals for pumps:

The reliability of pumps depends to a large extent on mechanical seals. In petrochemical enterprises, most of the treated fluid of Shanghai mechanical seals is inflammable and explosive. Once the mechanical seals fail and leak, it not only pollutes the environment and affects human health, but also causes major accidents such as fire and explosion. We mainly start with the selection of sealing structure for mechanical seals used in petroleum refining pumps under different working conditions to reduce the failure rate of mechanical seals used in sealed reactor and improve the reliability of application.

1. Mechanical Seals for High Temperature Hot Oil Pumps

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

2. Mechanical Seals for Gas and Diesel Pumps

The mechanical seals of this kind of pump are stopping structure (bellows structure is used for pumps above 200 C). One is to prevent heat generated by high-speed stirring; the other is to prevent tension springs from transmitting torque.

4. Mechanical Seals for Low Temperature Light Hydrocarbon Pumps

The method of adding non-compensatory ring tail length and the structure of auxiliary back cover is adopted, and the ability of anti-pumping of mechanical seals of light hydrocarbon pumps is added. The pressure of the sealing chamber is improved by scouring to prevent dry seal conflict caused by pumping time. The self-flushing method can not only ensure the high medium pressure in the sealing chamber, prevent the medium from vaporizing or gas accumulation in the sealing chamber, but also take away the conflict heat of the conflict pair in time, effectively control the temperature rise of the sealing end surface, increase the liquid phase area and improve the conflict situation.

Valves:

Valves are not only a few in petrochemical refining equipment, but also have many kinds and quantities of valves. The medium in chemical production is corrosive, poisonous or flammable and explosive. When the valve leaks, it will not only cause severe waste of raw materials, energy and products, but also have a severe impact on the environment. And even lead to serious safety accidents. Therefore, it is necessary and necessary for us to pay attention to the leakage of valves in petrochemical production process.

3. General type seals:

With the continuous progress of static sealing technology, the information and structure of rubber sealing products and gaskets have made considerable progress, and the application in various sealing areas is also very extensive, including petrochemical areas, along with its subsidiary industries will be encouraged, and the development prospects of all industrial chains are very promising.