System and method for controlling the working line position in a gas turbine engine compressor
First Claim
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1. An apparatus, comprising:
- an electric generator;
a first compressor including a plurality of variable inlet guide vanes;
a first turbine coupled to said first compressor and said electrical generator, said first turbine driving said first compressor and said electrical generator at a substantially constant speed;
a second compressor;
a second turbine coupled to said second compressor and operable to drive said second compressor; and
said first compressor has a working line maintained at a constant level by closed loop control of said plurality of variable inlet guide vanes.
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Abstract
A system for actively controlling the working line location within a low pressure compressor. The system includes a plurality of variable inlet guide vanes that are adjusted to maintain the working line at a constant level as the low pressure compressor rotates at a constant speed.
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Citations
15 Claims
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1. An apparatus, comprising:
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an electric generator; a first compressor including a plurality of variable inlet guide vanes; a first turbine coupled to said first compressor and said electrical generator, said first turbine driving said first compressor and said electrical generator at a substantially constant speed; a second compressor; a second turbine coupled to said second compressor and operable to drive said second compressor; and said first compressor has a working line maintained at a constant level by closed loop control of said plurality of variable inlet guide vanes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus, comprising:
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an electric generator; a low-pressure compressor including a plurality of variable inlet guide vanes and a plurality of bleed off valves;
a high-pressure compressor;a high-pressure turbine coupled to said high-pressure compressor and operable to drive said high-pressure compressor; a low-pressure turbine coupled to said low-pressure compressor and said electrical generator, said low-pressure turbine driving said low-pressure compressor and said electrical generator at a constant rotational speed; and said low-pressure compressor has a working line controlled by operation of said plurality of bleed off valves up to a bleed off valve closing point, at said bleed off valve closing point said plurality of bleed off valves are closed, and control of said working line above said bleed off valve closing point is through the operation of said plurality of variable inlet guide vanes to maintain said working line at a constant level independent of engine output power. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An apparatus, comprising:
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an electric generator; and a multi-spool gas turbine engine comprising; a first compressor having a working line level; a first turbine coupled to said first compressor and said electrical generator, said first turbine driving said first compressor and said electrical generator at a substantially constant speed; a second compressor; a second turbine coupled to said second compressor and operable to drive said second compressor; and means for maintaining said working line of said first compressor at a constant level.
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Specification