Development and investigation of face buffer impulse seal of centrifugal compressor
DOI:
https://doi.org/10.15587/1729-4061.2016.59884Keywords:
buffer pulse seal, static calculation, flow characteristics, centrifugal compressorAbstract
The method of simplified static calculation (one-dimensional model of laminar isothermal flow in the end clearance) and the experimental results of the design of the face buffer impulse seal for the centrifugal compressor are presented. The flow characteristics of the seal depending on the seal and buffer fluid pressure and the shaft speed are obtained. The dimensions of the seal (dimensions of the rings, the load factor, the number and dimensions of the chambers and feeders) are selected so that to ensure performance at the shaft speed of up to 10,000 rpm and pressure up to 5.0 MPa with leakages not exceeding 37 nl/min. The dual seal design will reduce the volume flow rate and increase the efficiency of the centrifugal compressor. The design of such a seal can also serve as a barrier or backup seal. Due to the gas-static action of the locking groove, it can be used in rotary machines at low sliding speed.
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Copyright (c) 2016 Андрей Васильевич Загорулько, Дмитро Володимирович Лісовенко, Василь Сигизмундович Марцинковський
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