Patent ID: 7780174
Filing Date: 2010-08-24
Classification: F01D,F02C

Abstract:
1. A door seal for a turbomachine, for sealing a gap between two circumferential and coaxial components of the turbomachine comprising: a first component of a turbomachine extending circumferentially around an axis of the turbomachine and having a first sealing edge also extending circumferentially around the axis; a second component of the turbomachine extending circumferentially around the axis coaxially with the first component and having a second sealing edge also extending circumferentially around the axis coaxially with the first sealing edge; a plurality of retaining bolts positioned circumferentially around and firmly attached to one of the components; a plurality of seal doors, each having at least one retaining hole for receiving a respective retaining bolt therethrough, such that the seal doors are tiltably held on the retaining bolts to simultaneously engage the first and second sealing edges of the two components and to create separate zones of different pressure sealed against each other on opposites sides of the seal doors, with the sealing edges being radially disposed at a certain distance from each other and both on one side of the sealing doors, and which are subjected to a sealing pressure force F wherein each sealing edge is formed as a plurality of chords extending circumferentially around the axis such that the sealing engagement between each sealing door and each chord-form sealing edge is in a straight line, thereby allowing the sealing door to tilt over each straight line edge while remaining in sealing straight line contact across the sealing door.