EXHAUST APPARATUS OF A GAS PUMPING UNIT Russian patent published in 2021 - IPC F16L59/00 

FIELD: gas turbine engines.

SUBSTANCE: invention relates to structures of aviation gas turbine engines, in particular, to structures of assemblies for removal of hot gases. An exhaust apparatus of a gas pumping unit, containing elements consisting, in turn, of four walls, or in the form of a circular pipe. All walls consist of a non-bearing hot part and a bearing cold part interconnected by assemblies excluding transfer of axial and radial forces, occurring on heat expansion of the non-bearing hot shell, to the bearing cold shell and reducing heat transfer between interconnected shells.

EFFECT: provides a possibility of excluding deformation and destruction of sheets of the outer lining of exhaust shafts during operation due to the compensation for the heat expansion of metal in the vertical and horizontal planes during operation of the GPU.

8 cl, 12 dwg, 2 tbl