Fluid flow machine comprising a sealing arrangement
AssigneeROLLS-ROYCE plc
InventorsMichael M. WOJEWODKA, James D. Campbell, Daniel P. T. Everington, Hannah C. Davies
Life of this patent
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Abstract
There is provided a fluid flow machine (10) comprising: a casing structure (24), a turbomachine blade (311) disposed within the casing structure (24), and a sealing arrangement (330) coupled to the casing structure (24). The sealing arrangement comprises (330) an abrasion portion (334) including a lattice structure (400). The abrasion portion (334) is configured to provide a seal with a tip (321) of the turbomachine blade (311). There is also provided a method (600) of manufacturing such a fluid flow machine (10).
Claims16
A fluid flow machine comprising:
- a casing structure, a turbomachine blade disposed within the casing structure, and a sealing arrangement coupled to the casing structure;
- wherein:
- the sealing arrangement comprises a support structure and an abrasion portion including a lattice structure;
- the abrasion portion is formed on the support structure;
- the abrasion portion is configured to provide a seal with a tip of the turbomachine blade;
- and
- the abrasion portion includes a filler within the lattice structure, the filler comprising one or more selected from:
- a polyester, a polyimide, a cyanate ester, a siloxane, a polysiloxane or a polyepoxide.
A method of manufacturing a fluid flow machine, the method comprising:
- producing a sealing arrangement comprising a support structure and an abrasion portion, the abrasion portion being formed on the support structure, the abrasion portion including a lattice structure;
- and
- coupling the sealing arrangement to a casing structure such that the abrasion portion is configured to provide a seal with a tip of a turbomachine blade disposed within the casing structure,
- wherein producing the sealing arrangement includes forming the abrasion portion, and
- wherein forming the abrasion portion includes inserting a filler into the lattice structure, the filler comprising one or more selected from:
- a polyester, a polyimide, a cyanate ester, a siloxane, a polysiloxane or a polyepoxide.
Dependencies are inferred from the claim text.