A light-weight force transmission strut structure and casing with the strut structure

Abstract

The invention relates to a low-weight force transfer support plate structure capable of being applied to a ground gas turbine and aero-engine. A force transfer support plate is obtained by sheet metal forming of a board with the thickness being 0.3-2mm. Reinforced boss rib structures of the certain width and depth are designed at different height positions around the support plate, and the boss rib structures are formed through impact molding. The support plate is combined with the inner circle and outer circle of a casing in a welding mode ultimately and further bears complex stresses of a welding assembly in the operating state. Through the support plate subjected to sheet metal forming, the weight of the support plate casing in the ground gas turbine and aero-engine can be lowered obviously. Furthermore, when analysis is made from the aspects of engine force transferring and stressing, through the structure design method of the reinforced boss rib structures dispersed at the different height positions on the surface of the support plate, the support plate thermal expansion requirement caused by different deformation rates of the inner circle and outer circle of the casing in a heat-state environment can be met, and meanwhile the support plate structure can be adapted to thin-walled support plate vibration danger possibly caused by gas flow pulsation of gas flowing in a main flow channel at a high speed.

Description

technical field [0001] The invention relates to a strut structure used in the fields of gas turbines, aero-engines, etc., and in particular to a light-weight force transmission strut structure, which can meet the requirements of (non-) force-transmission casing and (non-) The design of the power transmission case needs. Background technique [0002] Because it is related to the safety of engine operation, the reliable design of (non) power transmission casing and (non) power transmission casing is a structural design problem with important practical significance in the fields of gas turbines and aeroengines. [0003] In the structural design of gas turbines and aero-engines in the past, such casing components were often assembled and welded by several complex precision casting or forging parts. In the (non-) power transmission casing using this type of casing assembly, the inner and outer flow channels are connected by welding several support plates distributed along the ci...

AI Technical Summary

Problems solved by technology

In order to improve the strength of the casing and ensure sufficient strength during the operation of the engine, the support plate is often designed to be thicker, which will inevitably lead to excessive weight of the casing, complicated processing of parts and high processing costs. question

At the same time, due to the excessive thickness of the wall surface of the support plate, it brings great trouble to the processing, so that the process routes of precision casting and forging will cause a lot of loss of blanks, and will also cause a lot of loss and waste of blank raw materials

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