Integrated turbine engine bleed system
A turbine engine for an aircraft includes a compressor with a low-pressure spool including a low-pressure tap and a high-pressure spool including a high-pressure tap and a combustor connected to the compressor. The engine includes a turbine connected to the combustor and that includes an inlet section connected to the outlet portion of the combustor and an outlet section. The engine also includes an integrated engine bleed system connected to the compressor and a plurality of aircraft sub-systems. The integrated engine bleed system connects the high/low pressure taps various aircraft sub-systems.
1 . A turbine engine for an aircraft comprising:
a compressor including an inlet, an outlet, a low-pressure spool arranged between the inlet and the outlet, and a high-pressure spool arranged between the low-pressure spool and the outlet, the low-pressure spool including a low-pressure tap and the high-pressure spool including a high-pressure tap;
a combustor connected to the compressor, the combustor including an inlet portion connected to the outlet of the combustor and an outlet portion;
a turbine connected to the combustor, the turbine including an inlet section connected to the outlet portion of the combustor and an outlet section; and
an integrated engine bleed system connected to the compressor and a plurality of aircraft sub-systems, the integrated engine bleed system including:
a first inlet fluidically connected to the low-pressure tap;
a second inlet fluidically connected to the high-pressure tap;
a plurality of outlets connected to corresponding ones of the plurality of aircraft sub-systems;
at least two shut-off valves connected to the high-pressure tap; and
at least one heat exchanger (HX) connected to the low-pressure tap and the high-pressure tap;
wherein the at least two shut-off valves include a first shut-off valve having a first shut-off valve inlet fluidically connected to the high-pressure tap and a first shut-off valve outlet fluidically connected to two of the plurality of aircraft sub-systems and a second shut-off valve having a second shut-off valve inlet fluidically connected to the high-pressure tap and a second shut-off valve outlet fluidically connected to another two of the aircraft sub-systems;
wherein the HX includes:
a first HX circuit having a first HX circuit inlet fluidically connected to the first shut-off valve and a first HX circuit outlet fluidically connected to the two of the plurality of aircraft sub-systems; and
a second HX circuit including a second HX circuit inlet fluidically connected to the low-pressure tap and a second HX Circuit outlet fluidically connected to ambient, the second HX circuit passing through the HX in a heat exchange relationship with the second HX circuit;
the turbine further comprising:
a low-pressure feed fluidically connected between the low-pressure tap and the first HX circuit inlet downstream of the first shut-off valve;
a check valve arranged in the low-pressure feed;
a third shut-off valve arranged between the first HX circuit outlet and the two of the plurality of aircraft sub-systems; and
a fourth shut-off valve arranged between the second HX circuit outlet and at least one of the another two of the aircraft sub-systems.
2 . The turbine engine according to claim 1 , further comprising:
a first sensor associated with the first shut-off valve and a second sensor associated with the second shut-off valve.
3 . The turbine engine according to claim 2 , further comprising:
a controller operatively connected to the first shut-off valve and the second shut-off valve, the controller establishing a position of at least one of the first shut-off valve and the second shut-off valve based on feedback provided by at least one of the first sensor and the second sensor.
4 . An aircraft comprising:
a fuselage including at least one wing, and a tail;
a plurality of sub-systems arranged in the aircraft, the plurality of sub-systems including an engine buffer system, an environmental control system (ECS), an anti-icing system, a start system, and a stability system; and
a turbine engine as recited in claim 1 supported by the fuselage.
5 . The aircraft according to claim 4 , further comprising:
a first sensor associated with the first shut-off valve; and
a second sensor associated with the second shut-off valve.
6 . The aircraft according to claim 5 , further comprising:
a controller operatively connected to the first shut-off valve and the second shut-off valve, the controller establishing a position of at least one of the first shut-off valve and the second shut-off valve based on feedback provided by at least one of the first sensor and the second sensor.
7 . A turbine engine for an aircraft comprising:
a compressor including an inlet, an outlet, a low-pressure spool arranged between the inlet and the outlet, and a high-pressure spool arranged between the low-pressure spool and the outlet, the low-pressure spool including a low-pressure tap and the high-pressure spool including a high-pressure tap;
a combustor connected to the compressor, the combustor including an inlet portion connected to the outlet of the combustor and an outlet portion;
a turbine connected to the combustor, the turbine including an inlet section connected to the outlet portion of the combustor and an outlet section; and
an integrated engine bleed system connected to the compressor and a plurality of aircraft sub-systems, the integrated engine bleed system including:
a first inlet fluidically connected to the low-pressure tap;
a second inlet fluidically connected to the high-pressure tap;
a plurality of outlets connected to corresponding ones of the plurality of aircraft sub-systems;
at least two shut-off valves connected to the high-pressure tap; and
at least one heat exchanger (HX) connected to the low-pressure tap and the high-pressure tap;
wherein the at least two shut-off valves include a first shut-off valve having a first shut-off valve inlet fluidically connected to the high-pressure tap and a first shut-off valve outlet fluidically connected to two of the plurality of aircraft sub-systems and a second shut-off valve having a second shut-off valve inlet fluidically connected to the high-pressure tap and a second shut-off valve outlet fluidically connected to another two of the aircraft sub-systems;
wherein the first shut-off valve includes a first shut-off valve inlet and the second shut-off valve includes a second shut-off valve inlet;
wherein the HX includes:
a first HX circuit having a first HX circuit inlet fluidically connected to the first shut-off valve and a first HX circuit outlet fluidically connected to the two of the plurality of aircraft sub-systems; and
a second HX circuit including a second HX circuit inlet fluidically connected to the low-pressure tap and a second HX Circuit outlet fluidically connected to ambient, the second HX circuit passing through the HX in a heat exchange relationship with the second HX circuit;
the turbine further comprising:
a low-pressure feed fluidically connected between the low-pressure tap and the first HX circuit inlet downstream of the first shut-off valve;
a check valve arranged in the low-pressure feed;
a third shut-off valve arranged between the first HX circuit outlet and the two of the plurality of aircraft sub-systems; and
a fourth shut-off valve arranged between the first HX circuit outlet and another of the two of the plurality of aircraft sub-systems; and a fifth shut-off valve fluidically arranged between the first shut-off valve inlet and the second shut-off valve inlet and one of the another two of the plurality of aircraft sub-systems.
8 . An aircraft comprising:
a fuselage including at least one wing, and a tail;
a plurality of sub-systems arranged in the aircraft, the plurality of sub-systems including an engine buffer system, an environmental control system (ECS), an anti-icing system, a start system, and a stability system; and
a turbine engine as recited in claim 7 supported by the fuselage.
9 . The aircraft according to claim 8 , further comprising:
a first sensor associated with the first shut-off valve; and
a second sensor associated with the second shut-off valve.
10 . The aircraft according to claim 9 , further comprising:
a controller operatively connected to the first shut-off valve and the second shut-off valve, the controller establishing a position of at least one of the first shut-off valve and the second shut-off valve based on feedback provided by at least one of the first sensor and the second sensor.
11 . The turbine engine according to claim 7 , further comprising:
a first sensor associated with the first shut-off valve and a second sensor associated with the second shut-off valve.
12 . The turbine engine according to claim 11 , further comprising:
a controller operatively connected to the first shut-off valve and the second shut-off valve, the controller establishing a position of at least one of the first shut-off valve and the second shut-off valve based on feedback provided by at least one of the first sensor and the second sensor.