skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fuel nozzle tube retention

Abstract

A system for retaining a fuel nozzle premix tube includes a retention plate and a premix tube which extends downstream from an outlet of a premix passage defined along an aft side of a fuel plenum body. The premix tube includes an inlet end and a spring support feature which is disposed proximate to the inlet end. The premix tube extends through the retention plate. The spring retention feature is disposed between an aft side of the fuel plenum and the retention plate. The system further includes a spring which extends between the spring retention feature and the retention plate.

Inventors:
;
Publication Date:
Research Org.:
GENERAL ELECTRIC COMPANY, Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1345224
Patent Number(s):
9,581,335
Application Number:
14/453,950
Assignee:
GENERAL ELECTRIC COMPANY NETL
DOE Contract Number:
FC26-05NT42643
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Aug 07
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Cihlar, David William, and Melton, Patrick Benedict. Fuel nozzle tube retention. United States: N. p., 2017. Web.
Cihlar, David William, & Melton, Patrick Benedict. Fuel nozzle tube retention. United States.
Cihlar, David William, and Melton, Patrick Benedict. Tue . "Fuel nozzle tube retention". United States. doi:. https://www.osti.gov/servlets/purl/1345224.
@article{osti_1345224,
title = {Fuel nozzle tube retention},
author = {Cihlar, David William and Melton, Patrick Benedict},
abstractNote = {A system for retaining a fuel nozzle premix tube includes a retention plate and a premix tube which extends downstream from an outlet of a premix passage defined along an aft side of a fuel plenum body. The premix tube includes an inlet end and a spring support feature which is disposed proximate to the inlet end. The premix tube extends through the retention plate. The spring retention feature is disposed between an aft side of the fuel plenum and the retention plate. The system further includes a spring which extends between the spring retention feature and the retention plate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 28 00:00:00 EST 2017},
month = {Tue Feb 28 00:00:00 EST 2017}
}

Patent:

Save / Share:
  • A reusable system for removably attaching the lower end 21 of a nuclear reactor fuel assembly duct tube to an upper end 11 of a nuclear reactor fuel assembly inlet nozzle. The duct tube's lower end 21 has sides terminating in locking tabs 22 which end in inwardly-extending flanges 23. The flanges 23 engage recesses 13 in the top section 12 of the inlet nozzle's upper end 11. A retaining collar 30 slides over the inlet nozzle's upper end 11 to restrain the flanges 23 in the recesses 13. A locking nut 40 has an inside threaded portion 41 whichmore » engages an outside threaded portion 15 of the inlet nozzle's upper end 11 to secure the retaining collar 30 against protrusions 24 on the duct tube's sides.« less
  • A system includes a multi-tube fuel nozzle having an inlet plate and a plurality of tubes adjacent the inlet plate. The inlet plate includes a plurality of apertures, and each aperture includes an inlet feature. Each tube of the plurality of tubes is coupled to an aperture of the plurality of apertures. The multi-tube fuel nozzle includes a differential configuration of inlet features among the plurality of tubes.
  • A system includes a multi-tube fuel nozzle with a fuel nozzle body and a plurality of tubes. The fuel nozzle body includes a nozzle wall surrounding a chamber. The plurality of tubes extend through the chamber, wherein each tube of the plurality of tubes includes an air intake portion, a fuel intake portion, and an air-fuel mixture outlet portion. The multi-tube fuel nozzle also includes a differential configuration of the air intake portions among the plurality of tubes.
  • A reusable system for removably attaching the lower end 21 of a nuclear reactor fuel assembly duct tube to an upper end 11 of a nuclear reactor fuel assembly inlet nozzle is described. The duct tube's lower end 21 has sides terminating in locking tabs 22 which end in inwardly-extending flanges 23. The flanges 23 engage recesses 13 in the top section 12 of the inlet nozzle's upper end 11. A retaining collar 30 slides over the inlet nozzle's upper end 11 to restrain the flanges 23 in the recesses 13. A locking nut 40 has an inside threaded portionmore » 41 which engages an outside threaded portion 15 of the inlet nozzle's upper end 11 to secure the retaining collar 30 against protrusions 24 on the duct tube's sides.« less
  • A method to retain a nozzle in a rock bit is described for use with air-type roller cone rock bits. A plastic nozzle body is formed with a number of radially disposed fins equidistantly spaced on the periphery of the nozzle body. A nozzle retention hole is formed in the body of the rock bit with a diameter slightly less than the diameter of the fins on the plastic nozzle. As the plastic nozzle body is forced into the nozzle retention hole, the fins deflect slightly in a downstream direction and bite against the nozzle retention walls formed by themore » bit body. (3 claims.« less