Transformer with smooth-walled tank

Details Transformer with smooth-walled tank Transformer with smooth-walled tank

1982-09-01

1985-02-05

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Housing or enclosure

336 90, 336100, H02K 524

Patent

active

044973870

ABSTRACT:
Transformer having an active part thereof disposed in an oil-filled, smooth-walled tank having side walls braced by ribs secured by welding and subdivided into wall-high panels, the panels, respectively, including a sheetmetal wall having a resonance frequency f.sub.o smaller according to the function f.sub.o =(S.multidot.k.sub.f)/B.sup.2 then twice line frequency, wherein S is the thickness of the sheetmetal in cm, B the net panel width in cm, and k.sub.f a constant having an absolute magnitude which depends upon the length-to-width ratio of the panel, upon the modulus of elasticity, upon the transverse contraction and upon the specific gravity of the material used therefor.

REFERENCES:
patent: 3270305 (1966-08-01), Glassano
patent: 4226299 (1980-10-01), Hansen

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