| Patent Number |
Title Of Patent |
Date Issued |
| 7432620 |
Seal assembly for a hydrogen-cooled electric power generator with interface impervious to locati |
October 7, 2008 |
| A seal assembly is provided to prevent leakage of cooling fluid from a generator housing. A bracket 26 includes an inlet connectable to power plant piping for receiving a supply of sealing fluid. The inlet is in communication with a bracket passageway 32 for admitting the sealing flu |
| 7432505 |
Infrared-based method and apparatus for online detection of cracks in steam turbine components |
October 7, 2008 |
| An online method, system, and computer-readable code for remotely monitoring radiant energy emitted from a turbine blade (106), which may be undergoing an incipient degradation, such as a crack, in a relatively low-temperature, and saturated steam environment of the low pressure stag |
| 7431757 |
Water and sulfur removal from combustion turbine exhaust |
October 7, 2008 |
| A combustion turbine power plant (10) incorporating a desiccating scrubber (140) for simultaneously removing water and sulfur from a flue gas (20) of the power plant (10). The desiccating scrubber (140) may include an inlet nozzle (145) for spraying an aqueous solution (142) containing a |
| 7431565 |
Method of repairing a threaded generator rotor blower assembly |
October 7, 2008 |
| A method of repairing a generator blower hub assembly (12) and rotor blade (10) removed from the generator blower hub assembly (12) where the rotor blade (10) has fatigued material in threads of a threaded blade root (14). The method may include removing (32) at least a portion of the |
| 7431193 |
Vibration stress relief of weldments |
October 7, 2008 |
| A method of stress relief for stainless steel combustion turbine components includes vibrating the components during welding at a subharmonic frequency. The proper frequency is selected to be below a harmonic frequency, and to produce an amplitude in the range of 1/4 to 1/2 the ampli |
| 7428842 |
Phased array ultrasonic testing system and methods of examination and modeling employing the sam |
September 30, 2008 |
| A phased array ultrasonic testing system is for examining turbine disc bores and blade attachments for discontinuities, such as stress corrosion cracking. The system is particularly suited to perform an accurate and efficient inspection of components despite their having a relatively |
| 7427712 |
Apparatus and method to prevent loss of conductive ground electrode |
September 23, 2008 |
| High voltage coils (40) having an insulated coil surface that includes a composite tape (32) bonded to a secondary conductive layer (34) in a half lap manner. The composite layer comprising a glass conductive tape bonded to a layer of mica paper tape in an edge lap manner. |
| 7421843 |
Catalytic combustor having fuel flow control responsive to measured combustion parameters |
September 9, 2008 |
| A gas turbine combustor (23) includes a catalytic combustion stage (22) receiving a first portion (18) of a total oxidizer flow (16) and a first portion (30) of a total fuel flow (29) and discharging a partially oxidized fuel/oxidizer mixture (40) into a post catalytic combustion sta |
| 7421842 |
Turbine spring clip seal |
September 9, 2008 |
| An improved turbine spring clip seal for directing gases to be mixed with fuel in a combustor basket. The turbine spring clip seal may include an inner housing and an outer housing. The inner housing or the outer housing, or both, may be shortened relative to conventional clips and may |
| 7418858 |
Method and system for ripple-spring compression assessment |
September 2, 2008 |
| A method and system for directly measuring the compression of a ripple spring (23) in a dynamoelectric machine through a corresponding wedge (27). A compression-assessment tool (3) is provided that includes a carriage (32) for supporting a proximity sensor (34). The carriage (32) ena |
| 7416390 |
Turbine blade leading edge cooling system |
August 26, 2008 |
| A cooling system for a turbine blade of a turbine engine having a leading edge impingement cooling channel in series with one or more pressure and suction side impingement cooling channels. The turbine blade may include a double outer wall with impingement cooling channels positioned bet |
| 7416362 |
Multidirectionally compliant fastening system |
August 26, 2008 |
| A fastening system has at least one peripheral spring and at least one peripherally expandable bushing, with the peripheral spring being at least partially enclosed within the peripherally expandable bushing. The peripheral spring and peripherally expandable bushing each contain axial |
| 7416108 |
High strength diffusion brazing utilizing nano-powders |
August 26, 2008 |
| A braze material (10) including nano-sized filler material particles (14). The nano-sized particles will melt at a temperature significantly lower than the micron-sized particles used in prior art braze materials, thereby eliminating or reducing the need for the addition of temperature |
| 7413798 |
Thermal barrier coating having nano scale features |
August 19, 2008 |
| A ceramic thermal barrier coating material (10) containing nano-sized features is predicted to exhibit improved high temperature performance than a comparable material containing fewer of such features. In a coating deposited by an APS process, the nano-sized features may be interspl |
| 7413700 |
Methods of manufacturing insulated ceramic matrix composite |
August 19, 2008 |
| A composite material (10) formed of a ceramic matrix composite (CMC) material (12) protected by a ceramic insulating material (14). The constituent parts of the insulating material are selected to avoid degradation of the CMC material when the two layers are co-processed. The CMC mat |
| 7413407 |
Turbine blade cooling system with bifurcated mid-chord cooling chamber |
August 19, 2008 |
| A cooling system for a turbine blade of a turbine engine having a bifurcated mid-chord cooling chamber for reducing the temperature of the blade. The bifurcated mid-chord cooling chamber may be formed from a pressure side serpentine cooling channel and a suction side serpentine cooli |
| 7413053 |
Acoustic resonator with impingement cooling tubes |
August 19, 2008 |
| Aspects of the invention are directed to an acoustic resonator with improved impingement cooling effectiveness. The resonator includes a plate with an inside face and an outside face. A plurality of passages extend through the plate. The resonator includes a side wall that extends fr |
| 7412320 |
Detection of gas turbine airfoil failure |
August 12, 2008 |
| A system and method for early detection of a failure of a gas turbine engine airfoil (10), such as but not restricted to a burn through of the airfoil outer skin (12). A sensor (52) provides a signal (54) responsive to a condition of fluid flowing through an outer cooling chamber (24) of |
| 7402347 |
In-situ formed thermal barrier coating for a ceramic component |
July 22, 2008 |
| A thermal barrier layer (20) is formed by exposing an oxide ceramic material to a thermal regiment to create a surface heat affected zone effective to protect an underlying structural layer (18) of the material. The heat affected surface layer exhibits a lower strength and higher the |
| 7400072 |
Bolted spherical series and phase connector for stator coils of electrical generators |
July 15, 2008 |
| A connector arrangement and techniques are provided for reducing eddy current losses and/or skin effects while enabling more readily serviceable series and phase connections between the coil ends 12 and 18 of a generator stator 10. This may be achieved by providing a connecting struc |
| 7398642 |
Gas turbine system including vaporization of liquefied natural gas |
July 15, 2008 |
| A gas turbine cycle that utilizes the vaporization of liquefied natural gas as an intercooler in an open loop gas turbine system. The system provides an increase in gas turbine cycle efficiencies while providing a convenient system for vaporizing liquefied natural gas. The systems and |
| 7397163 |
Power generator stator assembly, a stator core module assembly, and a process for assembling a s |
July 8, 2008 |
| A stator core module assembly (20) is provided which is adapted to be mounted to at least one structural element (16, 18) coupled to a stator frame (10). The stator core module assembly comprises a stator core module (22) adapted to form part of a stator core (21) and at least one ke |
| 7397162 |
Method and apparatus for checking stator core alignment |
July 8, 2008 |
| In one embodiment the present invention provides for a method for checking the alignment of a stator core that comprises placing a laser source 14 and a target 18 a given distance apart on a stator core 10 and activating the laser such that the laser strikes the target. Then measuring on |
| 7395594 |
Apparatus and method for the installation of a stator core into a power generator |
July 8, 2008 |
| The present invention comprises a method and apparatus for installing a stator core into a power generator 1 that comprises assembling the stator core inside of a container 60, and then moving the container to the power generator. The container is horizontally aligned with the power |
| 7393183 |
Trailing edge attachment for composite airfoil |
July 1, 2008 |
| A trailing edge attachment for a composite turbine airfoil. The trailing edge attachment may include an attachment device for attaching the trailing edge attachment to the airfoil. The attachment device may include a plurality of pins extending through the attachment device and into |
| 7391141 |
Electrical-discharge-inhibiting conformable layer for use in inner-cooler coils |
June 24, 2008 |
| A conformable layer (14) for inhibiting electrical discharge between vent tubes (16) and strands (12) in an inner-cooled coil (5). The conformable layer comprises a resistive inner core (24) and a conductive strip (20) wrapped in a conductive outer wrap (26). The conductive strip (20) is |
| 7390471 |
Apparatus and method for catalytic treatment of exhaust gases |
June 24, 2008 |
| An exhaust gas treatment apparatus (20) for reducing the concentration of NO.sub.x, HC and CO in an exhaust gas stream (18) such as produced by a gas turbine engine (12) of a power generating station (10). The treatment apparatus includes a multifunction catalytic element (26) having an |
| 7390353 |
System for removing water from flue gas |
June 24, 2008 |
| A system (10) for removing water from a flue gas (12) includes a heat exchanger (16) for receiving a flow of heat exchanging fluid and the flue gas (12). An absorber (40) may have a gas inlet (41) for receiving the flue gas (12) from the heat exchanger (16), an inlet (45) for receiving a |
| 7387758 |
Tabbed ceramic article for improved interlaminar strength |
June 17, 2008 |
| A ceramic article having improved interlaminar strength and a method of forming the article. The article may be a ceramic matrix composite article. The methods of forming the articles increase the interlaminar strength of the article by forming indentations in the article during proc |
| 7379632 |
Fiber optic Bragg grating strain gauge for application on structures with compliant surface cove |
May 27, 2008 |
| An optical measurement device for measuring strain related to deformation of a deformable surface of a component. The optical measurement device includes a fiber tension structure including opposing longitudinal end sections attached to the deformable surface. An optical fiber is ten |
| 7377116 |
Gas turbine combustor barrier structures for spring clips |
May 27, 2008 |
| A barrier structure (302) blocks exit of spring clip fragments (317) that may break off from a spring clip assembly disposed between a gas turbine engine combustor (300) and a transition piece component (360). The barrier structure (302) may additionally comprise an aspect (326) effe |
| 7376518 |
System and computer program product for non-destructive quantification of thermal barrier coatin |
May 20, 2008 |
| System and computer program product for non-destructively inspecting and characterizing micro-structural features in a thermal barrier coating (TBC) on a component, wherein the micro-structural features define pores and cracks, if any, in the TBC. The micro-structural features having |
| 7372279 |
Power generation unit condition monitor using frequency profile analysis |
May 13, 2008 |
| A power generator unit condition monitoring system can receive a frequency profile generated by a frequency generating component and can transmit the received frequency to a frequency profile analyzer. The frequency profile analyzer analyzes the transmitted frequency profile and compares |
| 7371352 |
Catalyst element having a thermal barrier coating as the catalyst substrate |
May 13, 2008 |
| A combustion catalyst coating (36) applied to the surface of a ceramic thermal barrier coating (34) which is supported by a metal substrate (32). The microstructure of the thermal barrier coating surface provides the necessary turbulent flow and surface area for interaction of the ca |
| 7371044 |
Seal plate for turbine rotor assembly between turbine blade and turbine vane |
May 13, 2008 |
| This invention relates to a seal plate system adapted to fit between axially adjacent turbine blades and turbine vanes to seal a rim cavity. The seal plate system may be formed from a seal plate supported by a plurality of extended disk lugs extending from a disk. The seal plate syst |
| 7371043 |
CMC turbine shroud ring segment and fabrication method |
May 13, 2008 |
| Fabricating a refractory component for a gas turbine engine, such as a turbine shroud ring segment, by arranging refractory fiber tows (24) in a flaired tubular geometry (20) comprising a stem portion (21) and a funnel-shaped portion (22); impregnating the refractory fibers (24) with |
| 7370466 |
Extended flashback annulus in a gas turbine combustor |
May 13, 2008 |
| An extended flashback annulus (520) is formed between an exterior surface (506) of a shroud or casing (508) associated with a main swirler assembly inner body (500) or other fuel/air mixing device and the inner surface (514) of an annulus casting (510) which are in operational relationsh |
| 7369057 |
Power generator and power generator auxiliary monitoring |
May 6, 2008 |
| A generator monitoring system and method includes a plurality of sensors (12) disposed within a generator enclosure (18) to sense health conditions of a generator (10) housed within the enclosure. The sensors are interconnected to provide a single communication path (14) for allowing |
| 7368827 |
Electrical assembly for monitoring conditions in a combustion turbine operating environment |
May 6, 2008 |
| An electrical assembly for use in various operating environments such as a casing of a combustion turbine 10 is provided. The assembly may include an electrical energy-harvesting device 51 disposed in a component within the casing of the turbine to convert a form of energy present within |
| 7367177 |
Combined cycle power plant with auxiliary air-cooled condenser |
May 6, 2008 |
| A combined cycle power plant (20) including a main air-cooled condenser (22) condensing steam at a first pressure and an auxiliary air-cooled condenser (24) condensing steam at a second pressure higher than the first pressure. Designing an air-cooled combined cycle power plant for st |
| 7353586 |
Method of horizontally stacking a stator core within a stator frame |
April 8, 2008 |
| The present invention provides a method for the horizontal stacking of laminations 10 and donuts to form a stator core. A stator generator frame 2 has multiple keybars 6 that run the axial length of the frame. The laminations 10 have grooves 12 there-in that engage the keybars to pro |
| 7351364 |
Method of manufacturing a hybrid structure |
April 1, 2008 |
| A method of manufacturing a hybrid structure (100) having a layer of CMC material (28) defining an interior passageway (24) and a layer of ceramic insulating material (18) lining the passageway. The method includes the step of casting the insulating material to a first thickness required |
| 7351036 |
Turbine airfoil cooling system with elbowed, diffusion film cooling hole |
April 1, 2008 |
| A cooling system for a turbine airfoil of a turbine engine having an elbowed film cooling hole positioned in an outer wall defining the turbine airfoil. The elbowed film cooling hole may include a first section extending from an inner surface of the outer wall into the outer wall, an |
| 7341428 |
Turbine blade for monitoring torsional blade vibration |
March 11, 2008 |
| The claimed invention provides a blade vibration measuring system comprising a blade, a transmitter, a target with parallel edges located on the blade shroud and a receiver. The present invention also provides a blade adapted for measuring torsional blade vibration. Furthermore, the |
| 7338244 |
Attachment device for turbine combustor liner |
March 4, 2008 |
| An attachment device for coupling one or more restrained members to a frame. In at least one embodiment, the attachment device may be configured to attach one or more turbine combustor liners to a carrier. The attachment device may include a body rotatable about an axis of rotation a |
| 7337613 |
Method for monitoring and controlling steam turbine system pH using shaft current |
March 4, 2008 |
| The present invention involves a system for controlling the electric charge within the exhaust hood and condenser of a steam turbine by using shaft current as an indirect measurement of exhaust charge, and then adjusting the pH accordingly. The present invention uses the turbine-gene |
| 7337183 |
Customer extranet portal |
February 26, 2008 |
| According to one embodiment of the invention, a computerized method of providing information to a customer in the power industry includes automatically receiving data representing a plurality of characteristics of a power plant device associated with a power plant of the customer bas |
| 7334995 |
Turbine blade assembly and method of manufacture |
February 26, 2008 |
| Aspects of the invention are directed to a turbine blade assembly and an associated method of manufacture. The turbine blade assembly can include: (a) a unitary structure having an airfoil and a primary root portion; (b) a separately-formed platform; and (c) a secondary root portion that |
| 7334991 |
Turbine blade tip cooling system |
February 26, 2008 |
| A turbine blade for a turbine engine having a cooling system in the turbine blade formed from at least one elongated tip cooling chamber for passing cooling fluids in close proximity to an outer surface of the tip section of a turbine blade. The cooling system may include one or more |
| 7334960 |
Attachment device for removable components in hot gas paths in a turbine engine |
February 26, 2008 |
| An attachment device for coupling one or more removable turbine components to a carrier of a turbine engine. The attachment device may include a securement structure rotatable about an axis of rotation and including one or more arms for grasping an arm extending from a support structure. |
