초록 ▼

Several physical features on an inlet guide vane (IGV) ensure proper orientation of the IGV within a compressor during assembly. A gear with several teeth removed results in a flat surface on the gear which inhibits the gear from rotating on the rack of the compressor inlet casing. An orientation pi

Several physical features on an inlet guide vane (IGV) ensure proper orientation of the IGV within a compressor during assembly. A gear with several teeth removed results in a flat surface on the gear which inhibits the gear from rotating on the rack of the compressor inlet casing. An orientation pin is located in the internal bore of the gear. The cylindrical IGV spindle has a portion formed as a flat surface and the orientation pin engages this flat surface. These features are applicable to both a one-piece IGV where the jackshaft is integrated with the IGV stem and a two-piece IGV in which the jackshaft is separate from the IGV stem. A feature applicable to a two-piece IGV is a shaped boss on the IGV stem that allows the jackshaft to be located on the IGV stem in only one orientation.

대표청구항 ▼

The invention claimed is: 1. An inlet guide vane (IGV), comprising:a jackshaft having a spindle, the spindle being cylindrical in shape for a portion of a circumference of the spindle and having a flat portion over another portion of the circumference of the spindle;a gear having a number of teeth a

The invention claimed is: 1. An inlet guide vane (IGV), comprising:a jackshaft having a spindle, the spindle being cylindrical in shape for a portion of a circumference of the spindle and having a flat portion over another portion of the circumference of the spindle;a gear having a number of teeth and a flat portion devoid of any teeth; andan orientation pin located through a wall of the gear and configured to be positioned into the internal bore of the gear, at a predetermined distance from the flat portion of the spindle.