초록 ▼

A cooled wall structure for a gas turbine engine comprises a perforated and an inner wall in which the walls are capable of relative movement to cope with the thermal strains experienced by the combustion chamber during operation of the engine. The inner wall comprises a number of wall elements atta

A cooled wall structure for a gas turbine engine comprises a perforated and an inner wall in which the walls are capable of relative movement to cope with the thermal strains experienced by the combustion chamber during operation of the engine. The inner wall comprises a number of wall elements attached to the outer wall in the manner of overlapping tiles. Each wall element is immovably secured to the outer wall at the mid-point of its downstream end and the sides of each wall element are movably attached to the outer wall adjacent the sides of the downstream end of the wall element. The upstream end of each wall element is located between the outer wall and an adjacent flow in either an upstream or a downstream direction between the walls. The wall elements can have a plurality of raised lands to increase the surface area of the elements and to protect the incoming cooling air against the cross-flow of cooling air already flowing in the wall structure.

대표청구항 ▼

A wall structure for gas turbine engine combustion equipment, the wall structure comprising: at least an outer wall and an inner wall spaced therefrom, said outer wall being perforate to allow a flow of cooling air to enter the space between the outer and inner walls, the wall structure having outle

A wall structure for gas turbine engine combustion equipment, the wall structure comprising: at least an outer wall and an inner wall spaced therefrom, said outer wall being perforate to allow a flow of cooling air to enter the space between the outer and inner walls, the wall structure having outlets to allow cooling air to flow from the space between the outer and inner walls to the interior of the combustion equipment, said inner wall comprising a plurality of circumferentially and axially arranged wall elements, each inner wall element having an upstream end and a downstream end, means for positively attaching the downstream end of each inner wall element to the outer wall, each upstream end of each inner wall element being located between the downstream end of an axially adjacent inner wall element and the outer wall, said means of positive attachment of each inner wall element including a non-movable attachment point positioned circumferentially in the center of the downstream end of said inner wall element and two further attachment points positioned circumferentially on each side of said centrally positioned attachment point for permitting relative movement of said wall element in an axial and a circumferential direction, and a plurality of raised lands extending from each inner wall element toward and terminating short of said outer wall, said lands defining a plurality of internal flow passages for the cooling air.