Finned Strainer
AssigneeAtomic Energy of Canada Limited
InventorsDavid Bruce Rhodes, James Edward Allan McGregor
Life of this patent
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Abstract
The present invention relates to filters used to remove debris from water being sucked into a piping system. It has particular application use in nuclear power plants, which, after a loss of coolant accident, must pump cooling water back into the reactor core from a collection sump. This water may contain various types of debris that must be removed before the water is sent back into the reactor cooling system. There are restrictions on the allowable pressure drop across the strainer and the space available for installing this equipment. The finned strainer of the present invention addresses these issues while maximizing the quantity of debris filtered from the water.
Claims13
A strainer for filtering debris from a fluid:
- i) an elongated header defining an enclosed flowpath, having an outlet in fluid communication with a suction source and a plurality of inlet apertures disposed along a length of said flowpath, said flowpath exhibiting a pressure drop in the direction of fluid flow;
- ii) a strainer element disposed, in each said inlet aperture for straining debris from fluid entering said flowpath;
- iii) a flow controlling device for maintaining substantially uniform fluid flow through strainer elements located at different positions along said flowpath.
A strainer for filtering debris from a fluid comprising a header defining an enclosed volume and having an outlet in fluid communication with a suction source, said header having a plurality of inlet aperture slots formed therein, a fin-like strainer element projecting outwardly from each aperture slot for straining debris from said fluid, each said strainer element comprising a perimeter frame and a pair of fluid permeable screens fixed thereto in opposed spaced relation, and at least one fluid flow channel therebetween in fluid communication with said enclosed volume through a marginal side edge of said frame and said aperture slot.
Dependencies are inferred from the claim text.