Studies on seals for rotating shafts of high-pressure pumps
1965; Elsevier BV; Volume: 8; Issue: 4 Linguagem: Inglês
10.1016/0043-1648(65)90003-7
ISSN1873-2577
Autores Tópico(s)Engineering Diagnostics and Reliability
ResumoThe results of the studies of a mechanical seal at a water pressure of 100 kg/cm2 and a shaft speed ~3000 r.p.m. are described. The design of the seal ensured hydraulic balance. The best friction couple was established, the friction couple parts were protected against deformation, and the optimum finish of the friction surfaces was found. The results of the development and investigations of screw-type labyrinth seals intended for shafts rotating at high speeds are also described. A hydraulic calculation method of screw type labyrinth seals is presented and the results of calculations compared with results of the experimental studies of such seals. Creating a reliable seal for a pump shaft is a difficult problem if the liquid pressure before the seal is high and the shaft rotates at a high speed. Such pumps are often used for water or aqueous solutions. Let us consider some results of studies on shaft seals in water service, carried out in the USSR Research Institute for Hydraulic Machines. The investigations covered two types of seals, viz. mechanical and hydrodynamic.
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