Other

Bell Helicopter Textron Inc.

Honeywell Power Systems, Inc.

Daniel C Burns

John M Burns

Jeffrey S Burns

Robert L Stevens

Paul K Oldroyd

James Donn Hethcock, Jr

Patrick L O'Brien

Jonathan Alexander Freeman

Timothy Keller

Mohamad Hanif Vhora

Robert G Pierce

Coung Van Nguyen

A tube-to-tubesheet joint for steam condensers having a plurality of holes drilled in condenser tubesheets, a plurality of 8 mil triangular cut serrations in the wall surface of each hole, locating the serrations in a set positioned centrally of the wall surface, inserting a tube end into each hole, and forming a mechanical interference fit between tube wall and hole wall surface. In modified embodiment for thick tubesheets, plural sets of serrations with sets spaced apart may be formed in tubesheet holes.

Condenser tube-to-tubesheet joint improvement

A method of assembling a core stiffened structure that includes bonding a composite core to a substructure by utilizing magnetic force to create pressure between a flat surface of the composite core the substructure, and bonding a face sheet onto a surface network of the composite core.

Method of manufacturing net edge core and a method of bonding net edge core to a substructure

The invention apparatus and method is practiced in large steam surface condensers and in one aspect comprises relatively narrow horizontal trays installed between the vertical tube bundles to drain the condensate from the upper bundle around the lower ones and thereby improve the heat transfer coefficient of the lower bundle(s). A second aspect of the invention apparatus comprises relatively narrow horizontal trays installed slightly below the lowest bundle to improve reheating of falling condensate up toward the saturation temperature of the condenser thereby reducing subcooling and the level of dissolved oxygen in that condensate. A third aspect of the invention apparatus comprises a partial hood retrofitted at the top of the central tube sheet air off-take entrance which is a unique element of the starburst/core pipe condenser design to thereby improve the air removal capability and consequently the performance of the condenser.

Method and apparatus to improve performance of power plant steam surface condensers

The invention apparatus and method is practiced in large steam surface condensers and in one aspect comprises relatively narrow horizontal trays installed between the vertical tube bundles to drain the condensate from the upper bundle around the lower ones and thereby improve the heat transfer coefficient of the lower bundle(s). A second aspect of the invention apparatus comprises relatively narrow horizontal trays installed slightly below the lowest bundle to improve reheating of falling condensate up toward the saturation temperature of the condenser thereby reducing subcooling and the level of dissolved oxygen in that condensate. A third aspect of the invention apparatus comprises a partial hood retrofitted at the top of the central tubesheet air off-take entrance which is a unique element of the starburst/core pipe condenser design to thereby improve the air removal capability and consequently the performance of the condenser.

A method and apparatus reliable, accurate and continuous measurement of air inleakage into the condenser of a steam-electric power plant with convenient monitoring by power plant personnel.

Apparatus and method for monitoring steam condenser air inleakage

A triangular-shaped portable collapsible stand to accommodate either sheet music or books. It is a three-piece stand is designed for table top use. It is assembled by sliding angled slots into grooves.

Table stand for books or sheet music

Control logic and a method for controlling turbine speed. In an embodiment, the inventive control logic controls turbine speed of turbine generators operating in a stand-alone mode and/or a grid mode.

Valve control logic for gas turbine recuperator

A portable marker and retriever assembly is designed to be attached to a snowmobile or some similar vehicle. In one application, the assembly releases a tethered float in that situation when the snow mobile breaks through ice and sinks below the surface of a body of water. In another situation, the tether can be attached from one snowmobile to another to facilitate a towing operation.

Growing community of inventors

Cary, NC, United States of America

Daniel C Burns