| 摘要 |
PURPOSE:To reduce leakage of seal by forming a plurality of seal dam sections from circular high floor section to the circumferential end on the seal end of seal ring at the fixed side. CONSTITUTION:The seal section to be formed between facing end faces of the fixed side and rotary side seal rings 15, 7 is tapered radially to provide static pressure distribution of sealing fluid intruded into the gap section. When the loading capacity at the sealing section is higher than the pressing force P due to the sealing fluid functioning onto the back face of the fixed side sealing 15, said sealing 15 is pushed rearward in the axial direction to increase the radial speed of the sealing fluid while the fixed side sealing 15 is returned forward in the axial direction to provide high pressure distribution in the gap section thereby the static pressure at the balance point due to both operations will provide the sealing effect. |
