Bleed leak detection system
AssigneeSenior Operations, Inc.
InventorsLeslie Fernandes, Arnaud Amy
Life of this patent
Estimating the term…
Abstract
A leak detector for an insulated duct carrying pressurized hot air comprises a cuff secured over a circumferential cut in the insulation of the duct, thereby creating a reservoir of hot air which has leaked from the duct, a manifold defining a conduit therein in communication with the hot air reservoir and a cap for securing heat sensitive wires to manifold at the end of the conduit such that the hot air from the hot air reservoir impinges directly on the heat sensitive wires.
Claims30
In a metal duct for the transport of high temperature pressurized air, said duct having a layer of insulation wrapped therearound and an insulation shell over said layer of insulation, an improvement comprising:
- a cuff of flexible material for wrapping circumferentially around a portion of said duct, said cuff radially overlapping at least a portion of both said insulation and said insulation shell, wrapped around said duct, thereby creating a radially extending, circumferential void between a portion of said cuff, said insulation, and said insulation shell, collectively, and an inner surface of said cuff;
- said cuff having a hole defined therein, wherein said hole is in communication with said void.
In a metal duct for the transport of high temperature pressurized air, said duct having a layer of insulation wrapped therearound and an insulation shell over said layer of insulation, an improvement comprising;
- a cuff of flexible material for wrapping circumferentially around a portion of said duct, thereby creating a void between a portion of said cuff and said insulation shell:
- said cuff having a hole defined therein, wherein said hole is in communication with said void;
- a pad, having a hole defined therein positioned on the side of said cuff facing said insulation shell, said hole in said pad being aligned with said hole in said cuff, for purposes of reinforcing the area of said cuff in proximity to said hole in said cuff;
- wherein said pad is adhered to the inner surface of said cuff;
- and further wherein the cross section of said cuff comprises a raised middle portion having two shoulders on opposite sides thereof:
- and still further
- wherein said cuff is secured to said duct with a heat-resistant tape wrapped around said duct and said shoulders of said cuff.
In a metal duct for the transport of high temperature pressurized air, said duct having a layer of insulation wrapped therearound and an insulation shell over said layer of insulation, an improvement comprising:
- a cuff of flexible material for wrapping circumferentially around a portion of said duct, thereby creating a void between a portion of said cuff and said insulation shell;
- said cuff having a hold defined therein, wherein said hold is in communication with said void;
- a pad, having a hole defined therein, positioned on the side of said cuff facing said insulation shell, said hold in said pad being aligned with said hole in said cuff, for purposes of reinforcing the area of said cuff in proximity to said hold In said cuff;
- a manifold block disposed on said cuff adjacent said hole defined in said cuff, said manifold block defining a “Y” shaped conduit therein;
- and
- a cap, disposed on the top of said manifold block and secured thereto, said cap defining two channels therein for capturing of a pair of temperature-sensitive wires.
A method of improving the temperature detection capabilities of a sensor comprised of a pair of heat-sensitive wires for detecting leaks of hot air from a duct, said duct being wrapped with a layer of insulation covered by a silicon-rubber insulation shell comprising the steps of:
- making a circumferential cut in said insulation shell;
- securing a cuff having a raised portion over said cut in said insulation shell, said raised portion of said cuff creating a void between said cuff and said insulation shell, said cuff defining a hole therein in communication with said void;
- securing a manifold block over said hole defined in said shell, said manifold block defining one or more conduits therein in communication with said hole defined in said cuff;
- and
- securing one or more heat sensitive wires at the ends of said one or more conduits opposite said cuff.
Dependencies are inferred from the claim text.