Abstract In a vertical dynamoelectric machine, such as a waterwheel generator, primary support is here provided by a rigid foundation and upstanding wall concentric with the machine elements, where the foundation and wall are of a material such as concrete. To permit limited movement of the stator core caused by thermal expansion and contraction of the stator core and by magnetic pull, there are a plurality of rigid beams surrounding the core, each having a vertical portion with its lower end embedded in the foundation and a radial portion with its outer end embedded in the wall. The stator is joined to the vertical portion by means of both radial and tangential members that are flexible compared with the wall and the stator. In this way secure support is provided while permitting changes in position due to thermal effects and magnetic forces without causing damage as would occur in normal construction where such vertical dynamoelectric machines are made of large size.
A dynamoelectric machine comprising: a rotor and a stator located concentrically about a vertical axis; a rigid wall concentrically enclosing at least part of said stator spaced therefrom, said wall being integral with a rigid foundation underlying at least a portion of said stator with means to permit movement of said stator in relation to said foundation; means to secure said stator to said wall and said foundation comprising a plurality of beams each including a first portion extending vertically in spaced relation to said stator and also in spaced relation to said wall, said first portion of said beam having a lower extremity joined to said foundation, each beam also including a second portion extending radially from said first portion and having an outer extremity joined to said wall, means for joining said stator with said first portion of said beam comprising both radial and tangential members that are flexible compared with said foundation and said wall, said means for joining comprising a plurality of vertically spaced radially extending rod-like elements and a plurality of tangentially disposed plate-like members, said beams being rigid as compared with said means for joining; said wall and said foundation compriSing concrete and said beam extremities being embedded therein.
Claim 2
Dependent Claim
205 words
A dynamoelectric machine comprising: a rotor and a stator located concentrically about a vertical axis; a rigid wall concentrically enclosing at least part of said stator spaced therefrom, said wall being integral with a rigid foundation underlying at least a portion of said stator with means to permit movement of said stator in relation to said foundation; means to secure said stator to said wall and said foundation comprising a plurality of beams each including a first portion extending vertically in spaced relation to said stator and also in spaced relation to said wall, said first portion of said beam having a lower extremity joined to said foundation, each beam also including a second portion extending radially from said first portion and having an outer extremity joined to said wall, means for joining said stator with said first portion of said beam comprising both radial and tangential members that are flexible compared with said foundation and said wall, said means for joining comprising a plurality of vertically spaced radially extending rod-like elements and a plurality of tangentially disposed plate-like members, said beams being rigid as compared with said means for joining; said wall and said foundation compriSing concrete and said beam extremities being embedded therein.
Claim 3
Dependent Claim
34 words
The subject matter of claim 1 wherein: on a plurality of said plate-like tangential members there are mounted heat exchangers for carrying a cooling medium through the space between said stator and said wall.