Alan Royce Lovelace

US Patent:

6886346, May 3, 2005

Filed:

Aug 20, 2003

Appl. No.:

10/644385

Inventors:

Peter A. Sobieski - El Lago TX, US
Kelly Shawn Smith - Kingwood TX, US
Alan Lovelace - Kingwood TX, US
Hany Rizkalla - Stuart FL, US

Assignee:

Power Systems Mfg., LLC - Jupiter FL

International Classification:

F02C007/22

US Classification:

60776, 60740

Abstract:

A pilot fuel nozzle configuration for use in a combustor is disclosed having a natural frequency outside the range of the operating frequencies of a gas turbine engine. Multiple embodiments are disclosed for the improved pilot fuel nozzle including configurations for newly manufactured nozzles, repair to existing pilot nozzles, as well as multiple natural frequency levels for the improved pilot fuel nozzle. The pilot fuel nozzle comprises an elongated housing, first and second flanges, and a nozzle tip, with the first flange fixed to the elongated housing at a first end and the nozzle tip fixed to the second end, opposite of the first end. The second flange is fixed along the elongated housing and is used for attaching the pilot fuel nozzle to a combustor. The present invention incorporates an increased wall thickness along at least a mid-span portion of the pilot nozzle to increase the stiffness and change the natural frequency.

US Patent:

55135471, May 7, 1996

Filed:

Jan 6, 1995

Appl. No.:

8/369438

Inventors:

Alan R. Lovelace - Pensacola FL

Assignee:

Westinghouse Electric Corporation - Pittsburgh PA

International Classification:

B25B 1100
B25B 2714

US Classification:

81484

Abstract:

In a turbine system of the type wherein a first large cylinder having a first flange is connected to a second large cylinder having a second flange by a multiplicity of bolts securing the first flange to the second flange, a method of precisely aligning the first and second cylinders includes steps of (a) loosening the bolts that secure the first flange to the second flange so as to permit the first and second cylinders to be slightly shifted with respect to each other; (b) removing at least one of the bolts from its respective boltholes in the first and second flanges; (c) replacing the removed bolt in the respective boltholes with an apparatus for laterally shifting the first flange with respect to the second flange by a controlled amount; (d) shifting the flanges by using the apparatus; (e) tightening the bolts; (f) removing the apparatus; and (g) replacing and tightening the removed bolt. A unique apparatus for performing the lateral shifting is also disclosed.