An integrated containment pressure-suppression filtration and exhaust system

By integrating a containment pressure suppression filtration and discharge system, combined with multi-stage bubbling water washing and metal fiber filters, the system addresses the needs of rapid depressurization and radioactive material removal in the containment filters of offshore nuclear power platforms. This solves the technical problems of offshore nuclear power platforms, enabling rapid depressurization and efficient removal of radioactive materials in the containment under limited resource conditions. It reduces resource consumption, lowers radioactivity, avoids the inconvenience of regular fluid replenishment, and is economically efficient.

CN119517458BActive Publication Date: 2025-12-05CHINA SHIP DEV & DESIGN CENT
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Patent Information

Application Number
CN202411465939.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-21
Publication Date
2025-12-05
Estimated Expiration
2044-10-21

AI Technical Summary

Technical Problem

Existing containment filtration and emission systems in nuclear power plants consume too many resources and cannot meet the needs of rapid depressurization and removal of radioactive materials on offshore nuclear power platforms.

Method used

An integrated containment pressure suppression filtration and discharge system is adopted, including multi-stage bubbling water washing and metal fiber filtration. It utilizes the water washing and filtration function of the existing pressure water tank to achieve efficient removal of radioactive materials through two-stage bubbling water washing, and uses the existing compartment to arrange combined metal fiber filters to capture difficult-to-remove aerosols, reducing resource consumption.

Benefits of technology

It achieves rapid depressurization and efficient removal of radioactive materials from the containment vessel under limited resource conditions, reduces the overall resource consumption, lowers radioactivity, avoids the hassle of periodic fluid replenishment, and is economical.

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Abstract

The application provides an integrated containment pressure-suppression filter discharge system, which comprises a containment, a discharge valve, a discharge pipeline, a nozzle, a first-stage pressure-suppression water tank, a second-stage pressure-suppression water tank, a baffle plate steam-water separator, an expansion tank, a bursting disc structure, a combined metal fiber filter layer, a radiation monitor, a first stop valve and a second stop valve. The application is provided with two-stage pressure-suppression water tanks, and the two-stage bubbling water washing realizes a high removal efficiency of gas-borne radioactive substances, and then the existing cabin arrangement combined metal fiber filter is used, so that the requirement of rapid pressure reduction and radioactive substance removal of the containment under LOCA accident conditions can be met, and the problem of too many resources occupied by the existing containment filter discharge system of a nuclear power plant is solved, and the economic efficiency is high.
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