Fuel purging system for a turbine engine

Power plants – Combustion products used as motive fluid – With safety device

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Details

60741, F02G 100

Patent

active

050956949

ABSTRACT:
A purge system for the fuel injection system of a turbine engine is simplified by utilizing a system including first and second three-way valves 42, 44, each having an inlet port 46, an outlet port 48, and an inlet-outlet port 50 together with a movable valve element 52 which can alternately connect the inlet-outlet port 50 to the associated inlet port 46 or associated outlet port 48. A purge line 66 is connected to the outlet port 48 of each of the valves 42, 44 and extends into an exhaust conduit 20 of a turbine engine. A first line 60 is connected to the inlet-outlet port 50 of a first of the valves 42 and is connected to a start injector 30. A second line 63 is connected to the inlet-outlet port 50 of the other valve 48 and is adapted to be connected to at least one main injector 26. Separate conduits 62, 64 connected to respective ones of the inlet ports 46 are connected to respective controlled sources 36, 38, 40 of fuel under pressure.

REFERENCES:
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patent: 2846845 (1958-08-01), Parker
patent: 3344602 (1967-10-01), Davies et al.
patent: 3426527 (1969-02-01), O'Connor
patent: 3556444 (1971-01-01), Kopp
patent: 3841089 (1974-10-01), Clark
patent: 3901025 (1975-08-01), Bryerton et al.
patent: 4041695 (1977-08-01), Harper et al.
patent: 4215549 (1980-08-01), Daeschner
patent: 4423595 (1984-01-01), McLean
patent: 4539809 (1985-09-01), Stanley et al.

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