Patent application number | Description | Published |
20100007092 | Labyrinth Seal for Turbine Dovetail - A labyrinth seal that may include a first leg positioned about a high-pressure side of the dovetail tab, a second leg positioned about a low-pressure side of the dovetail tab, and a labyrinth chamber positioned between the first leg and the second leg. High-pressure fluid passing through the gap about the first leg expands within the labyrinth chamber so as to limit an amount of the high-pressure fluid that passes beyond the second leg. | 01-14-2010 |
20100008769 | Sealing Mechanism with Pivot Plate and Rope Seal - A sealing system for sealing a gap between a dovetail tab of a bucket and a rotor. The sealing system may include a sealing slot positioned about the dovetail tab and a pivot plate positioned within the sealing slot. The sealing slot may include a pivot point and a rest ledge such that the pivot plate pivots about the pivot point and into the gap when the bucket rotates. | 01-14-2010 |
20100008783 | Gas Assisted Turbine Seal - A dovetail seal assembly for sealing a gap between a bucket dovetail and a rotor. The dovetail seal assembly may include a sealing slot positioned about the dovetail, a high-pressure supply hole in communication with the sealing slot, and a deformable seal positioned about the sealing slot and into the gap. | 01-14-2010 |
20110311353 | SEAL ASSEMBLY FOR USE WITH TURBINE NOZZLES - A method for assembling a turbine nozzle assembly with respect to a combustor of a gas turbine engine is provided. The method includes coupling a radial outer retaining ring to an aft end of the combustor. A plurality of turbine nozzles is provided. Each turbine nozzle includes an inner band, a radially opposing outer band, and at least one vane extending between the inner band and the outer band. The outer band of each turbine nozzle is coupled to the outer retaining ring to define the turbine nozzle assembly. An inner retaining ring is positioned about an axis of the gas turbine engine and coupled to the inner band of each turbine nozzle. | 12-22-2011 |
Patent application number | Description | Published |
20110014053 | TURBINE BUCKET LOCKWIRE ROTATION PREVENTION - A retention system for a plurality of turbine buckets located in respective mating slots in a turbine rotor wheel includes a plurality of first retention slots formed in outer peripheral portions of the turbine wheel, and a plurality of second retention slots formed in wheel mounting portions of the buckets. The first and second retention slots are aligned to form an annular retention slot extending about a peripheral portion of the rotor wheel. A lockwire is located within the annular retention slot, the lockwire having engaged free ends. A plurality of axially-oriented retaining pins are fixed in the rotor wheel to hold the lockwire in the annular retention slot, and various techniques are employed for at least limiting or substantially preventing circumferential rotation of the lockwire within the annular slot. | 01-20-2011 |
20120183412 | CURVED COOLING PASSAGES FOR A TURBINE COMPONENT - A turbine component having a curved cooling passage is disclosed. The turbine component may generally comprise an airfoil having a base and a tip disposed opposite the base. The airfoil may further include a pressure side and a suction side extending between a leading edge and a trailing edge. An airfoil cooling circuit may be at least partially disposed within the airfoil and may be configured to direct a cooling medium through the airfoil. The curved cooling passage may generally be in flow communication with the airfoil cooling circuit such that the cooling medium flowing through the airfoil cooling circuit may be directed into the cooling passage. Additionally, the curved cooling passage may generally extend lengthwise within the airfoil between the leading and trialing edges along at least a portion of one of the pressure side and the suction side of the airfoil. | 07-19-2012 |
20120195743 | FLEXIBLE SEAL FOR TURBINE ENGINE - A system including: a first turbine segment comprising a first blade coupled to a first shank. The system also includes a second turbine segment including a second blade coupled to a second shank, as well as an elongated flexible seal disposed in a gap between the first and second shanks. The elongated flexible seal includes an opening configured to channel a fluid flow into a hollow region of the elongated flexible seal to induce expansion of the elongated flexible seal in the gap. | 08-02-2012 |
20130315748 | COOLING STRUCTURES IN THE TIPS OF TURBINE ROTOR BLADES - A turbine rotor blade used in a gas turbine engine, which includes an airfoil having a tip at an outer radial edge, is described. The airfoil includes a pressure sidewall and a suction sidewall that join together at a leading edge and a trailing edge of the airfoil, the pressure sidewall and the suction sidewall extending from a root to the tip. The tip includes a tip plate and, disposed along a periphery of the tip plate, a rail. The rail includes a microchannel connected to a coolant source. | 11-28-2013 |
20130315749 | COOLING STRUCTURES IN THE TIPS OF TURBINE ROTOR BLADES - A turbine rotor blade for a gas turbine engine is described. The turbine rotor blade includes an airfoil that includes a tip at an outer radial end. The tip includes a rail that defines a tip cavity; and the rail includes a circumscribing rail microchannel. The circumscribing rail microchannel is a microchannel that extends around at least a majority of the length of the inner rail surface. | 11-28-2013 |
Patent application number | Description | Published |
20090035146 | Airfoil shape for a turbine bucket and turbine incorporating same - Third stage turbine buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z′ set forth Table I wherein X and Y values are in inches and the Z′ values are non-dimensional values from 0 to 1 convertible to Z distances in inches by multiplying the Z′ values by the height of the airfoil in inches. The X and Y values are distances which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape. The X, Y and Z distances may be scalable as a function of the same constant or number to provide a scaled up or scaled down airfoil section for the bucket. The nominal airfoil given by the X, Y and Z distances lies within an envelope of +/−.0.040 inches in directions normal to the surface of the airfoil. | 02-05-2009 |
20140161585 | TURBO-MACHINE COMPONENT AND METHOD - A component, a component manufacturing process, and a component operation process are disclosed. The component has a diffuser permitting compressible fluid to flow throughout a first region and a second region of the diffuser at a decreasing velocity. The diffuser includes a coating collection feature. The component manufacturing process includes positioning the component and applying the coating to at least a surface of the component outside of the diffuser and to at least a portion of the second region, not to the first region, to the coating collection feature, or a combination thereof. The component operation process includes positioning the component and transporting the compressible fluid through the diffuser. | 06-12-2014 |
20140219780 | COOLING STRUCTURE FOR TURBOMACHINE - A cooling structure for a turbomachine. In one embodiment, the cooling structure is for a seal slot of the turbomachine. The cooling structure includes a body coupled to a surface of the seal slot. The body includes a passageway on a first surface of the body for providing a cooling fluid to the seal slot. In an other embodiment, a apparatus includes a first component and a second component adjacent the first component. The apparatus also includes a seal slot extending between the first component and the second component, and a cooling structure positioned within the seal slot. The cooling structure includes a body coupled to a surface of the seal slot. The body has a passageway on a first surface of the body for providing a cooling fluid to the seal slot. | 08-07-2014 |
Patent application number | Description | Published |
20100163501 | Convertible Card Row - When displayed, greeting cards are typically organized on a display fixture having multiple rows or levels upon which to sit the cards. Each row then has a front wall to hold in the card, yet is short enough to still view a portion of the greeting card above the wall. Because display fixtures are manufactured to have a specified amount of rows or levels at a specified depth, in order to adjust the specifications of a display fixture, other pieces may be used, for example, by attaching to the display fixture a convertible row to add another level or tier between set rows of the display fixture. By providing another row using a convertible row, another set of greeting cards may be displayed between cards displayed on other rows of the original display fixture, increasing the density of the overall display. Further, when an extra row is not desired, such a convertible row may be pushed flush against the back of the display fixture, while still attached, allowing the full depth of the row of the display fixture to be used. | 07-01-2010 |
20110272374 | CLIP FOR CONVERTIBLE CARD ROW - When displayed, greeting cards are typically organized on a display fixture having multiple rows or levels upon which to sit the cards. Each row then has a front wall to hold in the card, yet is short enough to still view a portion of the greeting card above the wall. Because display fixtures are manufactured to have a specified amount of rows or levels at a specified depth, in order to adjust the specifications of a display fixture, other pieces may be used, for example, by attaching to the display fixture a convertible row to add another level or tier between set rows of the display fixture. By providing another row using a convertible row, another set of greeting cards may be displayed between cards displayed on other rows of the original display fixture, increasing the density of the overall display. Further, when an extra row is not desired, such a convertible row may be pushed flush against the back of the display fixture, while still attached, allowing the full depth of the row of the display fixture to be used. To support the convertible row when in use, a divider or support clip is provided. The divider clip may both separate greeting cards within a row of the display fixture and support a convertible row adjacent thereto. The divider clip includes a clipping mechanism to attach the divider clip to the display fixture and an adjustable portion capable of adjusting itself to support an adjacent convertible row. | 11-10-2011 |
20130104378 | METHOD FOR PROVIDING A CONVERTIBLE CARD ROW | 05-02-2013 |