A Simulation Analysis and Experimental Research on T Groove End Face Seal under Mid-and-Low Speed

초록

Whether the dry gas seal in the low speed and large diameter of axle equipment can establish a stable gas film is essential to the stability of equipment operation. This is an inevitable requirement to maintain non-contact operation of dry gas seal in service. Choosing T Grooved dry gas seal which can realize bi-direction rotating and on the basis of optimized trough by Fluent software for simulation analysis. Obtain the influence rule of geometric parameters and operating parameters on the properties of T shaped groove dry gas seal under the low speed (<6000 r/min). At the same time, the law is verified through the experiment. The results show that the operating parameters, such as speed and pressure have obvious effects on the properties of sealing. Geometric parameters, like the groove depth and groove number have obvious effects on the sealing performance. Finally, the general principles in choosing working parameters and geometric parameters of T Grooved dry gas seal under low-speed were abtained: Groove number should be between 12 similar to 16, groove depth should be between 4 similar to 6 mu m, sealing clearance between 2 similar to 4 mu m. The research is instructive to provide theoretical support for engineering design and industrial application of T Grooved dry gas seal under mid-and low speed.

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