INVESTIGATION INTO CONTROLLABILITY OF SPIRAL GROOVE MECHANICAL SEALS

摘要

To maintain the integrity of the fluid film and to control the leakage rate are the most important means of long period and safe operation of spiral groove mechanical seals. The fluid film form corresponding to the given closing force was obtained by the coupling analysis. Thereby, the temperature of the sealing rings and the leakage rate were determined. The temperature of the stationary ring and the leakage rate were regarded as feedback parameters, and the closing force was regarded as adjusting parameter. On the basis of the control method proposed in this paper, the controllable operating of the seals can be realized.