Abradable Seals In Turbomachinery

PaperPg. 61-67.The intent of this paper is to describe various aspects of the application of abradable seals to industrial turbomachinery. Topics covered include sealing locations, materials, comparative studies and examples of the use of abradable seals. The paper will illustrate the use of the abradable seal as an energy saving device. Although the basic concepts discussed in this paper are generally applicable to several types of turbomachines, the scope of this paper will be directed primarily toward centrifugal compressors, since the compressor offers several different seal applications for study and because most of the work done on abradable seals has been relative to compressors