US 12,198,823 B2 · ECCS with self-cleaning filter system

ECCS with self-cleaning filter system

AssigneesJoint-Stock Company “Atomenergoproekt”, Science and Innovations—Nuclear Industry Scientific Development, Private Enterprise

InventorsAndrey Gennadievich Mitryukhin, Leonid Aleksandrovich Matyushev, Maksim Anatolyevich Drobyshevskiy, Yevgeniya Leonidovna Shamray

Life of this patent

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Abstract

The invention relates to a self-cleaning liquid purification system and is designed for the use in sump tank filters in nuclear power plants, as well as in any submersible filters used in any sectors of the economy. A self-cleaning liquid purification system comprises a filtration unit with filtering elements, a clean liquid discharge pipe, and an aerator. The aerator is designed as an intake device located on the liquid-gas boundary in a source of liquid to be purified, the aerator is capable of forming a liquid-gas mixture when it enters the intake device. The aerator is connected with a vertical downcomer to an accumulation chamber that is connected to the filtration unit by a hydraulic lock that is designed to be capable of pulse feed of liquid-gas mixture. The technical result is improved operation reliability of the liquid purification system through ensuring its capability of self-cleaning in the passive mode.

Claims5

Dependent claims

A self-cleaning ECCS filter system, comprising:

a vertically extending downcomer having a top end and a bottom end;
an aerator intake partially submerged in a liquid and configured to introduce a gas-liquid mixture to the top end of the downcomer;
an accumulation chamber located in the sump tank, wherein the bottom end of the downcomer is positioned in the accumulation chamber and is configured to introduce the gas-liquid mixture into the accumulation chamber and the accumulation chamber;
a hydraulic lock positioned in the accumulation chamber;
and
a filtration unit comprising filtering elements and a clean liquid discharge pipe located in the sump tank,
wherein the hydraulic lock is configured to cyclically pass air then water from the accumulation tank to the filtration unit through a distribution unit.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/619,120Filed 30 Apr 2020

Priority

RU RU201914500830 Dec 2019

Published

US 2023/0215589 A16 Jul 2023

Granted

14 Jan 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G21C 9/016
Emergency protection arrangements structurally associated with the reactor , e.g. safety valves provided with pressure equalisation devices: core…
G21D 1/02
Details of nuclear power plant: arrangements of auxiliary equipment
G21C 15/18
Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants: emergency cooling arrangements; Removing…
Y02E 30/30
Energy generation of nuclear origin: nuclear fission reactors