A self-flushing device for pump mechanical seal based on Malagoni effect

Abstract

A self-flushing device for a pump mechanical seal based on the Malagoni effect, comprising a main flushing chamber and an auxiliary flushing chamber arranged on both sides of the mechanical seal, and a flushing piping system; the flushing piping system includes a main flushing chamber The connected inlet flushing pipeline, the auxiliary flushing pipeline connected with the auxiliary flushing chamber, and the flushing outlet pipeline; the inlet flushing pipeline is used to inject an additive that can increase the surface tension of the process fluid into the main flushing chamber, and the auxiliary flushing The pipeline is used to inject additive II that can reduce the surface tension of the medium and adsorb solid particles into the auxiliary flushing chamber, and generate a surface tension gradient at the axial gap of the end face of the mechanical seal. The tiny particles on the end surface and wrapped in the liquid film are washed out. The invention has the advantages of simple structure, economy and energy saving, effectively removes impurities existing in the gap of the mechanical seal, greatly reduces wear of the end face of the mechanical seal, and prolongs the service life.

Description

technical field [0001] The invention relates to a self-flushing device for a pump mechanical seal based on the Maragoni effect. Background technique [0002] Mechanical seals are one of the key components of pump equipment, and are often used in high-speed, high-pressure, unstable conditions and complex multi-phase (such as solid-liquid two-phase) transportation environments. The formation and maintenance of the extremely thin liquid film between the dynamic and static ring end faces of the mechanical seal is the key to the long-term stable operation of the sealing system. However, during the operation of the mechanical seal for pumps, due to the comprehensive influence of frequency-changing working conditions, medium conditions, end face running-in and other factors, the end face of the mechanical seal is easily overheated and deformed, and the solid particles, impurities and pollutants in the outside or in the pump are It is very likely to enter the end face gap of the me...

AI Technical Summary

Problems solved by technology

But on the whole, for the complex solid-containing conveying environment, while realizing the flushing and cooling of the main body of the seal ring and the auxiliary device, the flushing and removal of particles and impurities in the tiny gap between the end faces of the mechanical seal needs to be strengthened

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