Mechanical seal in use, the entire device by the main seal, secondary seal and auxiliary system composed of three parts. The main seal functions as a sealing working medium and the secondary seal functions as an auxiliary seal. The mechanical seal auxiliary system has a flush seal face, improves the condition of the end face lubrication, regulates and controls the temperature and pressure of the flushing medium, removes flushing medium impurities, dilutes the leak medium and the like Function, mainly for the main and secondary seals to create a good environment and to ensure that the main seal in the best working conditions to run, thereby enhancing the reliability of mechanical seal work, safety and extend its service life. Mechanical seal auxiliary system mainly includes pressure control system, temperature control system, impurity removal system, fluid replacement or blocking system.
Mechanical seal auxiliary system of the basic components are: storage tanks, pressurized tanks, heat exchangers, filters, hydrocyclones, orifice plates, throttles, pumping rings, leak indicators, pipes, fittings and control instruments . The United States API 682 "Shaft Sealing System for Centrifugal Pumps and Rotor Pumps" provides common flushing solutions, applications, system configurations for single-end seals and double-end seals for equipment used in petroleum refining, chemical, and natural gas industries.
Unocal sealed according to the actual conditions of customers, with rich experience in engineering, to choose and provide the best cost-effective seal auxiliary system products.