Westinghouse Electric Corporation

Siemens Westinghouse Power Corporation

Siemens Power Corporation, Inc.

Siemens Energy, Inc.

Charles M Rowe

Alex Christodoulou

Thorsten Weltzien

Glenn D Cooper

Hector O Ponce

Henry M Holly, Iii

Charles L Senic

Lennart S Nilsson

John Barry Sargeant

Leonard B Simmonds

Emil M Fort

John M Butler, Iii

Robert T Ward

Gary R Lowther

Felix M Detinko

Lorenzo Ramirez

Donald Yaffee

Darrell R Morrison

Lorenzo E Ramirez-Coronel

James J Krizek

Lorenzo E Ramirez Coronel

David H Kistler

Lorenzo E Coronel

A gas-cooled turbine generator includes a rotor having baffles arranged in rings and defining a plurality of gas cooling zones. A stator core has stator slots in a bore in which the rotor is received. A plurality of air gap baffle assemblies are arranged in segmented baffle rings in the stator slots and cooperate with the zone rings on the rotor. Each of the air gap baffle assemblies includes at least one baffle segment and an individual locking cam cooperating with a respective wedge of the baffle segment to lock the baffle segment relative to a stator slot at which the baffle segment is positioned such that prior baffle 'trains' are no longer required.

Air gap baffle assembly for gas-cooled turbine generator and method of installing

A tuneable sensor reed for fiber optic vibration sensors. A sensor reed is mounted inside of a sensor case with an adjustable mounting structure such as a screw, bolt, clamp or cam lock. Adjusting the mounting structure changes the stresses on the sensor reed, and therefore adjusts the base frequency without the need to replace the whole sensor case. In a particular embodiment, the sensor reed is held in place by screws that completely penetrate the sensor case, and adjustments are made at the terminal end of the screw, which is on the outside of the sensor case, using for example, lock nuts. This adjustment allows for a sensor reed to be reset to its base frequency to compensate for such things as frequency drift, or to be set to a new frequency as desired.

Tuneable fiber optic sensor

A dynamoelectric machine includes a rotor and a stator surrounding the rotor. The stator includes a plurality of windings arranged in a main portion adjacent the rotor and terminating in a plurality of inner and outer end windings extending outwardly from the main portion. An end winding support assembly includes at least one support ring for the plurality of end windings and a respective adjustable bias member between the at least one support ring and each adjacent end winding to provide an adjustable separation bias between the at least one support ring and each adjacent end winding.

Dynamoelectric machine with adjustable bias end winding support assembly

A junction assembly has a first electrically conductive junction having at least one inlet and a second electrically conductive junction having at least one outlet. A plurality of electrically conductive flexible connectors are disposed between and attached to the first and second junctions. A casing surrounds the inlet and the outlet such that coolant can flow in from the inlet, throughout the interior of the casing interior, and out through the outlet.

Gas cooled electrical junction assembly

A junction assembly has at least one junction and at least one flexible connector. The junction has at least one channel sized and configured to accept and secure at least a portion of a flexible connector relative to the parallel rings and main lead, and at least one coolant passageway through with a coolant can flow to cool the flexible connectors. The flexible connectors are constructed of conductive wire to provide an electrically conductive path and to provide the junction assembly with flexibility. This junction and channel sizing and configuration provides the junction assembly with a modular capability in that one or more flexible connectors can to be positioned in many different ways within the junction.

Generator junction assembly

A clamping apparatus clamps opposing pairs of stator coil windings of a turbine generator and includes a retaining platform positioned adjacent one side and across a pair of coil windings having a space therebetween. A bore extends therethrough and is aligned with the space between the pair of coil windings. A connecting insert member is carried within the bore of the retaining platform and has a threaded through-hole aligned with the space between the pair of coil windings. A threaded rod extends through the space between the pair of coil windings and through the threaded through-hole of the connecting insert member. The threaded rod mates with the threaded through-hole such that the tension created in the threaded rod during tightening biases the retaining platform against the pair of coil windings.

Apparatus and method for clamping turbine generator coil windings using bolted clamp

An apparatus useful in clamping stator coil windings of a turbine generator includes a retaining platform for extending across a pair of the coil windings positioned in a spaced relation. The retaining platform includes a bore extending therethrough. A connecting insert member is slidably carried within the bore and has a through-hole with separable mating segments for admitting a rod into the through-hole. An elongated rod passes through the throughhole of the connecting insert member, which rod includes a bulbous shaped end dimensioned for passing through the bore of the retaining platform but cannot pass through the through-hole of the connecting insert member. Thus providing tension in the elongated rod biases the platform against the pair of coil windings.

Apparatus and method for clamping turbine generator coil windings

A stator wedge (30) to position in a coil slot (40) for retaining coils (40) of a stator of a power generator and methods of forming the wedge (30) are provided. The stator wedge (30) preferably includes an elongate, non-conductive, and substantially rigid body member (36). The body member (36) preferably includes a relatively flat bottom surface (35) and a relatively flat top surface (33). The top surface (33) preferably has less surface area than the bottom surface (35). The body member (36) also includes at least a pair of side peripheries sloping upwardly from peripheries of the bottom surface (35) having a greater surface area to peripheries of the top surface (33) having a lesser surface area to thereby define at least a pair of angled sides (31, 37). A thin-film, abrasion-resistant, non-conductive coating layer (32) is formed on upper surfaces of at least the pair of angled sides (31, 37).

Stator wedge having abrasion-resistant edge and methods of forming same

An apparatus useful in clamping stator coil windings of a turbine generator includes a retaining platform for extending across a pair of the coil windings positioned in a spaced relation. The retaining platform includes a bore extending therethrough. A connecting insert member is slidably carried within the bore and has a through-hole with separable mating segments for admitting a rod into the through-hole. An elongated rod passes through the through-hole of the connecting insert member, which rod includes a bulbous shaped end dimensioned for passing through the bore of the retaining platform but cannot pass through the through-hole of the connecting insert member. Thus providing tension in the elongated rod biases the platform against the pair of coil windings.

A dynamoelectric machine comprising a stator core with slots therein and top and bottom coils contained in each of the slots and extend from the end of the stator core is provided. A radial clamp for securing a pair of adjacent top coils together with a pair of bottom coils is provided. The radial clamp comprises a support block radially outside the pair of top coils. The support block has an aperture that is substantially radially lined in relation to the axis of the machine. A retaining platform is coupled proximate the bottom coils. The retaining platform defines a bore. A connecting insert member that is adapted to be adjustably mounted within the retaining platform bore is provided. The connecting insert member further defines an aperture. A traverse pin is mounted proximate the support block. A radially extending banding material having a first end and a second end which has a head portion is provided. The first end of the banding material is formed around the pin with the banding material running through the first support block aperture and with the head portion received within the connecting insert member aperture such that the connecting member can be adjusted to adjust the length of the banding material.

Clamping apparatus for turbine generator coil windings

A vibrational control system for the coils of a stator includes a coil support bracket affixed to the stator, a coil support brace mounted on the coil support bracket with a shim arranged between the coil support brace and the coil support bracket, a push block arranged between the coils and the coil support brace, and control structure for controlling the vibrations of the stator coils.

Vibrational control system for stator coils

A preload system for preloading end winding coils of a stator includes a coil support platform coupled to a periphery of one of the coils, a clamping apparatus compressing the end winding coils and the coil support platform and a preload apparatus between the clamping apparatus and the coil support platform and not running circumferentially around the clamping apparatus.

Preloading system for a clamp of a stator end winding coil

A remote frequency adjustment system for controlling the vibrational frequency of the coils of a stator of a turbine generator. The system includes a top coil and a bottom coil supported by a coil support brace and a frequency adjustment system that allows for remote adjustment of the characteristic frequency of the coils.

Remote frequency control system for controlling the vibrational

A support assembly for the end windings of a turbine generator includes a plurality of braces which are spaced apart around the circumference of the winding basket and which are mechanically connected to support rings disposed around the stator coils. The support assembly is decoupled from the stator core such that the end windings and end winding support structure float freely of the stator core during normal generator operating conditions. During abnormal short circuit operating conditions, the support assembly contacts brackets on the stator core such that the end windings are slidably engaged upon and supported by the stator core. Radial clamps tightly secure the top and bottom coils to the end winding support assembly to apply radial compressive load to the coils to prevent radial displacement of the coils and to maintain the end winding-end winding support structure as a monolithic structure capable of withstanding abnormal operating conditions.

Turbine generator stator end floating winding support

An improved method and apparatus for preventing electrical shorts between sets of stator coil headers and accompanying connections is disclosed in which a reinforced, non-conducting cover is fitted over a pair of stator coil headers, or a stator coil header and an adjacent phase connector. Thereafter, the cavity formed by the fitted cover can be filled with an insulating, solidifying or polymerizing material or resin. Use of such an apparatus insulates the entire header apparatus and prevents any accidental shorting between sets of stator coil ends.

Growing community of inventors

Orlando, FL, United States of America

Charles M Rowe