Problems with mechanical seals of high temperature medium pumps-

Problems Existing in the Mechanical Seal of High Temperature Medium Pump

　2020-05-08　　

Problems of mechanical seal of high temperature medium pump:

Taking the oil refining industry as an example, at present, contact-type bellows single-end mechanical seals are commonly used in high-temperature hot oil pumps at home and abroad. The domestic bellows mechanical seal has an average service life of about one year, and the imported bellows mechanical seal can reach two years. Above, it is basically necessary to adopt various washing and cooling measures (Figure 9-1) to reduce frictional temperature rise, prevent coking, thermal cracking, bellows loss, bellows rupture, pump evacuating, seal aging, etc. Lead to seal failure. For this reason, a large amount of flushing oil and cooling water will inevitably be consumed, resulting in high operating costs (preliminary estimates, the annual operating cost of a hot oil pump for flushing and cooling exceeds 100,000 yuan), large energy consumption, poor sealing reliability, and safety Low and high maintenance cost.

Figure 9-1 Bellows mechanical seal for hot oil pump

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Analysis of the application of mechanical seals for pumps in the case of high-temperature media 　　 What are the solutions for bellows mechanical seals for high-temperature hot oil pumps?