Reactor core

Details Reactor core Reactor core

H - Electricity

01

F

336/79

H01F 27/26 (2006.01) H01F 3/02 (2006.01)

Patent

CA 1075784

17GE-2480 REACTOR CORE Abstract of the Disclosure A reactor core includes a plurality of laminations of trapezoidal shape forming the legs of the core. These legs are arranged in generally rectangular configuration with air gaps provided at the comers of the core. These air gaps extend diagonally of the core legs and are formed between the inclined faces of adjacent ends of the trapezoidal-shaped core legs. End plates each having a longitudinal section extending parallel to and fixed to one of the legs and having flanges at each end of the longitudinal section extending perpendicularly to the longitudinal section are provided for maintaining the legs of the core in assembled relation and for effecting adjustment of the air gaps. The end plates include elongated openings in the flanges thereof for permitting movement of each of the end plates, and the leg to which it is affixed, relative to the remainder of the core for varying the size of the diagonal air gaps. A plurality of metallic, non-magnetic spacers having substantially the same shape as the end plates are disposed at intervals between the end plates to separate the core laminations into groups. These spacers carry the magnetic forces tending to close the air gap. Fastening devices extend through the elongated openings and are loosened to permit movement of the end plate and its associated leg relative to adjacent legs for changing the size of the air gaps and then again tightened to hold the legs in the adjusted position. The fastening devices are accessible from the exterior of the reactor to facilitate convenient adjustment of the air gaps. Because of the separation of the laminations into groups to reduce the forces necessary to oppose magnetic forces tending to close 17GE-2480 the air gaps and also, due to the diagonal construction of the air gaps, which has the effect of reducing the flux density and therefore themagnetic force at the air gaps the fastening devices can be designed to maintain the legs in adjusted position without the need of air gaps blocking spacers in the air gaps. The air gaps, therefore, are available as passages for the flow of cooling gas for removal of heat from the reactor core.

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