Device for preventing the explosion of an element of an electrical transformer
OwnerPhilippe Magnierinventor
Life of this patent
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Abstract
A device for preventing the explosion of an element of an electrical transformer provided with a tank containing a combustible cooling fluid, comprising a pressure release element for decompressing the tank, and a bag placed downstream of the pressure release element and configured to pass from a flat state to an inflated state upon the rupture of the pressure release element and for confining fluid.
Claims17
A device for preventing the explosion of an element of an electrical transformer provided with a tank containing a combustible cooling fluid, comprising:
- a pressure release element coupled to an outlet of the tank for decompressing the tank;
- a gastight inflatable bag coupled to an outlet orifice, said gastight inflatable bag being coupled to the outlet orifice with a sealed gastight connection downstream of the pressure release element and configured to pass from a substantially un-inflated state to a gas inflated state upon the rupture of the pressure release element and for confining fluid passing through the pressure release element such that the combustible cooling fluid be stored in the gastight inflatable bag;
- wherein the pressure release element is configured to rupture such that a substantially unrestricted release of fluid occurs from the tank to the gastight inflatable bag when a predetermined pressure occurs in the tank, and a channel for introducing inert gas downstream of the pressure release element to expel combustible gases towards the gastight inflatable bag.
A device for preventing the explosion of an electrical transformer provided with a tank containing a combustible cooling fluid and with a load changer, said device comprising:
- a pressure release element coupled to an outlet of the tank for decompressing the tank;
- a pressure release element coupled to an outlet of the load changer for decompressing the load changer;
- a gastight inflatable bag coupled to an outlet orifice, said gastight inflatable bag being coupled to the outlet orifice with a sealed gastight connection downstream of the pressure release elements and configured to pass from a substantially uninflated state to a gas inflated state upon the rupture of at least one of the pressure release elements and for confining fluid passing through said at least one pressure release element such that the combustible cooling fluid be stored in the gastight inflatable bag;
- wherein the pressure release element is configured to rupture such that a substantially unrestricted release of fluid occurs to the gastight inflatable bag when a predetermined pressure occurs in at least one of the tank and the load changer.
A method for preventing the explosion of an element of an electrical transformer provided with a tank containing a combustible cooling fluid, comprising:
- allowing decompression of the tank, wherein decompression of the tank includes the rupture of a pressure release element, coupled to an outlet of the tank, and the inflation of a gastight inflatable bag coupled to an outlet orifice, said gastight inflatable bag being coupled to the outlet orifice with a sealed gastight connection downstream of the pressure release element, the gastight inflatable bag passing from a substantially un-inflated state to a gas inflated state, and
- confining the fluid passing through the pressure release element such that said combustible cooling fluid be stored in the gastight inflatable bag, wherein the pressure release element is configured to rupture such that a substantially unrestricted release of fluid occurs from the tank to the gastight inflatable bag when a predetermined pressure occurs in the tank, and introducing inert gas downstream of the pressure release element to expel combustible gases towards the gastight inflatable bag by a channel.
Dependencies are inferred from the claim text.