US 2011/0297627 A1Published application

Strainer wall structure, filtration method using the same, and method of fabricating the same

AssigneesBhi Co., Ltd., Korea Hydro & Nuclear Power Co., Ltd.

InventorsSeung Jong Oh, Sang Yeol Kim, Hyeong Teak Kim, Chang Hyun Kim, Sang Won Lee, Jong In Woo

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Abstract

A strainer wall structure that removes foreign substances from a fluid suctioned into a pipe and a re-circulation pump that is part of an emergency core cooling system (ECCS). The strainer wall structure has an inlet side and an outlet side through which cooling water is introduced and discharged, respectively, and includes a body having an opening in a direction of the inlet side, closed side surfaces, and an outlet port disposed at one of the closed side surfaces. The strainer includes a punched plate filter screen inserted into the opening. A modular cassette apparatus including grooved first filter plates is inserted into the body, and second filter plates having second grooves is inserted into the first grooves.

Claims17

Dependent claims

A strainer wall structure including an inlet side through which cooling water is introduced and an outlet side through which the cooling water is discharged, comprising:

a body having an opening in a direction of the inlet side, closed side surfaces, and an outlet port disposed at one of the closed side surfaces;
a filter screen inserted into the opening and including a punched plate having a plurality of filter holes;
and
a modular cassette apparatus including
a plurality of first filter plates inserted into the body, each first filter plate having a plurality of first grooves, and formed by bending the punched plate, and
a plurality of second filter plates, each second filter plate having a plurality of second grooves inserted into the first grooves, and formed by bending the punched plate, so that the plurality of first filter plates disposed in one direction are perpendicular to the plurality of second filter plates and define a grid structure.

3 more elements

Dependencies are inferred from the claim text.