DEVICE FOR COMBINED CYLINDRICAL AND END CONNECTION OF AXISYMMETRIC TUBULAR PARTS Russian patent published in 2023 - IPC F16L23/02 

FIELD: aircraft engine building.

SUBSTANCE: devices for combined cylindrical and end connection of axisymmetric tubular parts, in particular, the type of outlet device and jet nozzle, intended for connecting tubular parts, which are one of the nodes of a gas turbine aircraft engine. A feature of the connection design is the presence of a common mounting and sealing flange, which provides a rigid and tight connection. The device contains a tubular part, which is a lightweight seamless outlet device (1) with a flanged part, and a tubular part, which is a lightweight seamless jet nozzle (2), also made with a flanged part, which are connected by means of a double-sided mounting and sealing flange (3) located between them with collapsible screw connection. During mounting, the outlet device (1) and the jet nozzle (2) are mated during assembly by the end surfaces of the flange sections with the end surfaces of the mounting and sealing flange. At the same time, on the one hand, the outlet device (1) contains a cylindrical surface (4) with a flange (4a), which includes a cylindrical surface (5) of the flange (3) to ensure mating and tightness of the resulting cylindrical connection. Also, the outlet device (1) contains a cylindrical surface (6) with a flange (6a), which includes a cylindrical surface (7) of the flange (3) to ensure tightness of the resulting cylindrical connection. On the other hand, the jet nozzle (2) contains a cylindrical surface (8) with a flange (8a), which includes a cylindrical surface (9) of the flange (3) to ensure the tightness of the resulting cylindrical connection. Also, the outer cylindrical surface (10) of the bent section of the outlet device (1), when connecting the structural parts, enters the inner cylindrical surface (11) with the flange (11a) of the jet nozzle (2) to ensure the tightness of the cylindrical connection.

EFFECT: reduction in the number of operations and labor intensity when making the output device and assembling the output device with a jet nozzle.

3 cl, 2 dwg