FIELD: machine building.
SUBSTANCE: circular combustion chamber (10) consists of external and internal axial walls (26, 28) upstream connected with chamber head (30). The chamber head has heat expansion ratio different from the ratio of heat expansion of axial walls. The chamber head is equipped with multitude of internal and external suspended brackets (34) secured with fastening systems (36) correspondingly on end sections upstream of internal and external walls. Each fastening system includes screw (40) passing through one of the suspended brackets and through the end section upstream of a corresponding axial wall and nut (46) tightened at one end of the fastening screw. Each fastening system additionally consists of a friction bushing positioned around the fastening screw between the nut and the end section of the corresponding axial wall. There is provided a radial gap between the nut and the end section of the axial wall. The fastening system additionally contains facilities for damping vibrations of the chamber head relative to the axial walls. Each suspended bracket contains a washer out of metal material through which there passes the fastening screw and the corresponding friction bushing also made out of metal material. The washer of suspended brackets has an embossment designed for expanding surface of contact between the washer and a corresponding friction bushing.
EFFECT: reduced bending stress in suspended brackets during operation due to free radial expansion of chamber head relative to axial walls and due to vibration damping.
7 cl, 6 dwg
