Turbomachine housing

Abstract

The invention relates to a turbomachine housing (21), in particular a steam turbine housing, comprising a first housing part and a second housing part (22) which are connected together via screw connections (28) on opposing or adjacent flanges. The second housing part (22) comprises a curved wall (23) with a curved inner face (24) and a curved outer face (25). The invention is characterized in that the curved inner face (24) is contoured with a first curvature radius (R1) in a first region facing away from the screw connections (28) and with a second curvature radius (R2), which deviates fromthe first curvature radius (R1), in a second region facing the screw connections (28) such that a force vector (34) of the force which depends on a pressure in the interior of the turbomachine housing(21) runs approximately coaxially but opposite to a force vector (32) of the screwing force of the screw connections (28) in the region of the screw connections (28), said screwing force vector extending through the axis (33) of the screw connections (32).

Description

technical field [0001] The invention relates to a turbine housing. Background technique [0002] A turbine housing, such as, for example, a steam turbine housing, usually consists of a plurality of housing parts, in particular a first lower housing part and a second cover housing part, said first lower The cover-like housing part and the second cover-like housing part are connected to each other via bolt connections on flanges positioned opposite or adjacent to each other. [0003] figure 1 A cross section through a turbine housing 1 known from the prior art, ie a steam turbine housing, is shown in an excerpt in the region of the cover housing part 2 . The cover-like housing part 2 has a wall 3 curved in cross-section with a curved inner side 4 and a curved outer side 5 . In the edge region of the cover-shaped housing part 2 a flange 6 is formed which has a flange surface 7 which connects the adjoining flanges of adjacent housing parts which are not shown. figure 1 The c...

AI Technical Summary

Problems solved by technology

[0005] The greater this offset Δx between the effective direction of the force vector 12 of the corresponding bolt force and the effective direction of the force vector 14 of a force dependent on the pressure in the interior of the turbine housing 1 , the greater the The more unfavorable the leverage conditions in the area of ​​the flange connection between the housing parts, the tightness of the flange connection is therefore negatively affected

As a result, gaps in the flange connection on the inside of the housing can be caused thereby, thus counteracting the tightness of the flange connection

this is disadvantageous

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