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发明公开
CN108708771A 一种用于低温涡轮的有机高分子材料动密封装置 无效 - 驳回

一种用于低温涡轮的有机高分子材料动密封装置
摘要：
本发明公开了一种用于低温涡轮的有机高分子材料动密封装置，该动密封装置为带有法兰的环状结构，套装在涡轮转子外侧，法兰通过螺钉固定在涡轮壳体上；除法兰以外的环状结构外壁为装配配合面，与涡轮壳体间隙配合；动密封装置与涡轮转子外缘相对的内壁处加工有迷宫密封齿。动密封装置材料为有机高分子材料聚酰亚胺。本发明结构简单、易加工、重量轻，稳定性高，适用于低温涡轮，可承受与高速运转下涡轮盘发生碰磨的情况，并有效减小流量损失，密封效果好，具有高可靠性和安全性。
摘要（英）：

The invention discloses an organic polymer material dynamic sealing device for a low-temperature turbine. The dynamic sealing device is of an annular structure with a flange, and the device is arranged on the outer side of a turbine rotor in a sleeved mode; the flange is fixed on a turbine shell through a screw; the outer wall of the annular structure except the flange is an assembly matching surface and is in clearance fit with the turbine shell; a labyrinth sealing tooth is machined at the position, opposite to the outer edge of the turbine rotor, of the dynamic sealing device; and the dynamic sealing device is made of organic polymer material polyimide. According to the organic polymer material dynamic sealing device, the structure is simple, machining is easy, the weight is light, thestability is light, the device is suitable for the low-temperature turbine, the situation that the device collides with a turbine disc under high-speed operation can be borne, and the flow loss is effectively reduced, the sealing effect is good, and high reliability and safety are achieved.

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