General Electric Technology Gmbh

General Electric Company

Alstom Technology Limited

Donald William Bairley

Wesley Paul Bauver, Ii

Rahul Jayant Terdalkar

Ian J Perrin

Glenn T Selby

Jeffrey Frederick Magee

Christoph Bernhard Ruchti

Van Dang

James Pschirer

Francois Droux

Scott William Herman

François Droux

Suresh K Shenoy

Robert William Moore

Thomas P Mastronarde

Jeffrey Fred Magee

Wesley P Bauver

Alessandro Matarrese

Falk Ruecker

Alan C Hazelton

Kwangsuk Jin

Patrick Neil Gallagher

Jay Brian Anderson

Christoph Ruchti

Ian James Perrin

Wesley Paul Bauver

Wesley P Ii Bauver

Wesley Paul Bauver Ii

Ii Wesley P Bauver

Wesley P Bauver Ii

A heat exchanger includes a sensor grid with sensor leads extending through tube restraints for heat exchange tubes in the heat exchanger. The tube restraint includes a body having a plurality of tube openings defined therein with each tube opening receiving one heat exchange tube of the set of heat exchange tubes therethrough. The body also includes a sensor lead opening defined therein to receive a sensor lead therethrough. Each tube opening has a larger dimension than the sensor lead opening. The sensor grid is installed during manufacture rather than in the field, allowing the sensor grid to be on outermost and inner sets of heat exchange tubes in the heat exchanger.

Heat exchanger with inner sensor grid and restraints for sensor wires and heat exchange tubes

A heat exchanger includes a plurality of heat exchange tubes arranged into a first row of tubes and a second row of tubes. A fixed mount fixedly positions the first row of tubes, and a movable mount makes the second row of tubes movable between an aligned position in which tubes in the second row are aligned with tubes in the first row, creating a linear flow path for the fluid through the tubes, and a non-aligned position in which tubes in the second row are not aligned with tubes in the first row, creating a curvilinear flow path for the fluid through the plurality of tubes. Heat is exchanged between the first fluid and a second fluid passing through the plurality of heat exchange tubes. The heat exchanger may be employed as an HRSG in a combined cycle plant, among other applications.

Heat exchanger with heat exchange tubes moveable between aligned and non-aligned positions

Heat recovery steam generators (HRSGs) including components and systems for reducing thermal stress experienced by manifolds within the HRSGs are disclosed. The HRSG may include a manifold receiving a working fluid of the HRSG, a plurality of piping links in fluid communication with the manifold, and an enclosure surrounding the manifold and the plurality of piping links. The HRSG may also include at least one thermal element positioned within the enclosure. The thermal element(s) may surround the manifold. Additionally, or alternatively, the HRSG may include a supplemental heating system in fluid communication with an interior of the enclosure. The supplemental heating system may include a heater for heating fluid (e.g., air), and an inlet conduit in fluid communication with and positioned downstream of the heater. The inlet conduit may be formed through the enclosure to provide the heated fluid to the interior of the enclosure.

Components and systems for reducing thermal stress of heat recovery steam generators in combined cycle power plant systems

A system for heating one or more components of a heat recovery steam generator that includes a heat-transferring conduit that fluidly connects a high-pressure section of a flow path to a low-pressure section of the flow path. The flow path is defined by a housing of the heat recovery steam generator and configured to direct a heat-containing medium. The heat-transferring conduit is configured to receive the heat-containing medium from the flow path such that the heat-containing medium flows through the heat-transferring conduit via a pressure differential between a first pressure of the heat-containing medium at the high-pressure section and a second pressure of the heat-containing medium at the low-pressure section. The heat-transferring conduit is further configured to heat the one or more components of the heat recovery steam generator via directing the heat-containing medium to be in heating contact with the one or more components.

System and method for heating components of a heat recovery steam generator

A heat exchanger apparatus for receiving water from a steam drum () and providing steam and heated unevaporated liquid water to the steam drum includes a first evaporator (EVAP-) and a second evaporator (EVAP-). The first evaporator can receive water from a steam drum via a first feed conduit () and the second evaporator can receive water from a second feed conduit (). Both evaporators can output heated fluid to the steam drum via a combined evaporator output conduit (). Each first evaporator passageway () only makes a single pass through a gas duct () having a heated gas flow () passing therethrough while each second evaporator passageways () can make one or more passes through the gas duct for transferring heat from the gas to the fluid within the evaporators. A portion of the first feed conduit can also have a pre-specified volume a pre-specified height below the first inlet ().

Evaporator apparatus and method of operating the same

In a nozzle and a nozzle assembly, for use in a pressure vessel, stress analysis is used to determine areas of stress concentration. The nozzle is configured to reduce these stress concentrations.

Nozzle and nozzle assembly configured to minimize combined thermal and pressure stress during transients

An evaporatorfor evaporating a liquid includes a plurality of harpsdisposed within a duct or chamber such that a heated fluid flow(e.g., heated gas or flue gas) passes through each successive row of harpsof the evaporator. Each of the harpsincludes a lower header, a plurality of lower tubes, an intermediate equalizing chamber, a plurality of upper tubes, and an upper header. The lower tubesare in fluid communication with the lower headerand extend upward vertically from the lower header. The upper ends of the lower tubesare in fluid communication with the equalizing chamber. The upper tubesare in fluid communication with the equalizing chamberand extend upward vertically from the equalizing chamber. The upper ends of the upper tubesare in fluid communication with the upper header

Continuous steam generator with equalizing chamber

A heat recovery steam generator that includes a first steam drum for receiving a flow of water and steam from an evaporator. The first steam drum is adapted to provide the flow of water and steam to a second steam drum. The second steam drum is in fluid communication with the first steam drum and receives the flow of water and steam from the first steam drum and separates steam from the flow of water and steam to form a separated steam. There is a steam flow outlet positioned in the second steam drum, the steam flow outlet adapted to release the separated steam from the second steam drum.

Method and configuration to reduce fatigue in steam drums

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Farmington, CT, United States of America

Donald William Bairley