| 摘要 |
An exhaust driven turbocharger for a medium speed diesel engine such as for use in a diesel locomotive or other suitable application includes an exhaust duct supported at one end by a rotor support having rigidly connected feet mountable upon a rigid base. The exhaust duct is supported at an axially opposite end by an exhaust duct support that includes laterally spaced support legs extending from individual mounting feet to points connecting with a support portion of the exhaust duct support located vertically above the axis of the rotor. The legs are configured to be essentially rigid in reducing vertical forces so as to solidly support the mass of the turbine end of the exhaust duct with which they are connected, but are made flexible laterally and axially so as to allow both lateral and radial expansion and contraction of the exhaust duct while limiting resulting stresses from the thermal variations in the exhaust duct, the exhaust duct support and the supporting base. Preferably, the locations of connection of the support legs with the exhaust duct support portion are such that vertical expansion of the exhaust housing between the rotor axis and the position of connection of the legs approximately equals linear extension of the legs so that vertical movements of the axis due to thermal changes are approximately equal at opposite ends of the rotor.
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