GB777598A - Improved mounting for turbine casings - Google Patents

Abstract

777,598. Turbines. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 13, 1955 [Oct. 13, 1954], No. 29525/54. Class 110 (3). Means for mounting a turbine casing with respect to a fixed bearing pedesta comprises co-operating tongue and groove portions formed on the pedesta and housing respectively above am below the horizontal axis of the tur bine the tongues having parallel vertica side faces and the grooves inner face! which diverge outwardly and wedge shaped members located between the faces of the tongue and groove portions and clamped to the groove portions The turbine casing formed in two halve! 1, 2, is located relative to the bearing pedestal, also formed in two halves3, 4, by axially extending lugs attached to the casing forming upper and lower groove portions 5, 6 and co-operating tongues 7, 8 attached to the pedestal. The inner faces of the grooves lie in planes which are substantially radial so that the grooves are outwardly divergent. The side faces of the tongues are machined flat and square with the rest of the unit. Wedges 9 clamped to the portions 5, 6 hold the tongues 7, 8 in the adjusted position. The upper and lower casings 1, 2 are also provided with horizontally disposed lugs 10, 11. The underfaces of the lugs 11 are inclined downwardly and outwardly in substantially radical planes and rest on tapered wedge pieces 13 supported on shoulders 14 attached to the pedestal portion 4. The wedge pieces have tongues 15 which engage grooves 16 in the underside of the lugs 11. Screws 17 are provided for adjusting the lateral position of the wedges and retaining studs 18 passing through holes in the wedge pieces 13 and lugs 10, 11 maintain these members in the adjusted position. The wedges 9, 13 allow the casing to be adjusted relative to the pedestal.