Air inlet and outlet silencer structures for turbine
First Claim
1. An air duct inlet silencing apparatus for use with a stationary gas turbine, said silencing apparatus comprising:
- an inlet duct structure extending around a vertical first axis and extending vertically along said first axis, said duct structure having an upper duct section with a plurality of vertically extending sides and a top cover, an inlet opening being formed in at least two of said vertically extending sides and an air outlet being formed at a bottom end of said structure, said outlet being adapted for connection to an air intake of said gas turbine;
an elongate centrally located, airflow defining member which extends around a vertical primary axis and extends downwardly from said top cover, past said air inlet openings, and along said primary axis, said airflow defining member being formed with a perforated sheet metal exterior and containing sound attenuating material;
airflow passageways extending from said air inlet openings towards said air outlet and each defined by at least one interior wall mounted in said duct structure, each airflow passageway bending substantially so that a bottom section thereof extends substantially parallel to said vertical first axis, wherein a substantial portion of said at least one interior wall is made of perforated sheet metal and sound attenuating material is contained in said at least one interior wall and is covered by said perforated sheet metal.
7 Assignments
0 Petitions
Accused Products
Abstract
Both air duct inlet silencers and air duct outlet silencers for use with a stationary gas turbine are disclosed. The inlet silencer comprises a vertically extending duct structure having an upper section with a plurality of vertically extending sides and a top cover. Air inlet openings are formed in the vertically extending sides and an air outlet is formed at the bottom end for connection to the air intake housing of the turbine. An elongate, central airflow defining member is substantially cylindrical for a major portion of its length and extends downwardly from the top cover and past the air inlets. This member has a perforated sheet metal exterior and contains sound attenuating material. Airflow passages extend from the inlet openings towards the outlet with each defined by at least one interior wall. Each passageway bends substantially downwardly so that the bottom section extends vertically. The outlet silencer includes first and second series of splitters with each series forming smaller air passageways.
39 Citations
16 Claims
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1. An air duct inlet silencing apparatus for use with a stationary gas turbine, said silencing apparatus comprising:
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an inlet duct structure extending around a vertical first axis and extending vertically along said first axis, said duct structure having an upper duct section with a plurality of vertically extending sides and a top cover, an inlet opening being formed in at least two of said vertically extending sides and an air outlet being formed at a bottom end of said structure, said outlet being adapted for connection to an air intake of said gas turbine;
an elongate centrally located, airflow defining member which extends around a vertical primary axis and extends downwardly from said top cover, past said air inlet openings, and along said primary axis, said airflow defining member being formed with a perforated sheet metal exterior and containing sound attenuating material;
airflow passageways extending from said air inlet openings towards said air outlet and each defined by at least one interior wall mounted in said duct structure, each airflow passageway bending substantially so that a bottom section thereof extends substantially parallel to said vertical first axis, wherein a substantial portion of said at least one interior wall is made of perforated sheet metal and sound attenuating material is contained in said at least one interior wall and is covered by said perforated sheet metal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A combination of a gas turbine intended for use at a stationary site and an air inlet silencing apparatus connected to an air intake of said gas turbine, said silencing apparatus comprising:
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an inlet duct structure extending around a vertical first axis and extending along said first axis, said duct structure having an upper duct section with a plurality of vertically extending sides and a top cover, air inlet openings being formed in at least two of said vertically extending sides, and an air outlet being formed at a bottom end of said structure, said outlet being connected to said air intake of said gas turbine;
an elongate, centrally located, airflow defining member which extends around a vertical primary axis and is substantially cylindrical or multi-sided for a major portion of its length and which extends downwardly from said top cover, past said air inlet openings, and along said primary axis, said airflow defining member being formed with a perforated sheet metal exterior and containing sound attenuating material; and
airflow passageways extending from said air inlet openings towards said air outlet and each defined by at least one interior wall mounted in said duct structure, each airflow passageway bending substantially so that a bottom section thereof extends substantially parallel to said vertical first axis, wherein a substantial portion of said at least one interior wall is made of perforated sheet metal and sound attenuating material is contained in said at least one interior wall and is covered by said perforated sheet metal. - View Dependent Claims (9, 10)
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11. An air duct silencing apparatus for use at an inlet of a stationary gas turbine, said silencing apparatus comprising:
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an inlet duct structure extending downwardly along a vertical first axis and including a duct section with a plurality of vertically extending sides and a top cover, a plurality of inlet openings being located on one of said vertically extending sides, which is an open side to a substantial extent, and an air outlet being formed at a bottom of said structure, said outlet being adapted for connection to an air intake of said gas turbine; and
a plurality of curved airflow splitters separating said inlet openings and extending inwardly and downwardly from said inlet openings towards said air outlet, said airflow splitters each being formed with a perforated sheet metal exterior and containing sound attenuating material;
wherein a plurality of airflow passageways are formed by and between said airflow splitters and extend from said inlet opening towards said air outlet, said airflow passageways bending substantially and an elongate bottom section of each passageway extending substantially parallel to said vertical first axis. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification