A pressure relief device for a nuclear power plant with a filtering structure

By installing multi-stage filters and a breathable mesh structure in the depressurization device of a nuclear power plant, the problem of unfiltered exhaust gas in existing technologies has been solved, enabling immediate purification and safe discharge of gas, and improving the safety and maintainability of the nuclear power plant.

CN224457661UActive Publication Date: 2026-07-03JIANGSU HUAYANG XINSILU ENERGY EQUIP CO LTD
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Patent Information

Application Number
CN202521149887.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-06
Publication Date
2026-07-03
Estimated Expiration
2035-06-06

AI Technical Summary

Technical Problem

Existing nuclear power plant depressurization systems lack effective filtration of harmful components in emitted gases, leading to potential environmental and safety risks, as well as high system complexity and operation and maintenance costs.

Method used

Multiple filters are installed inside the pressure relief pipe, filled with different types of filter materials. The filter materials are easily replaced through a breathable mesh structure and a removable top cover design. The hinged seat and threaded rod structure achieve a sealed fixation, ensuring that the gas inside the containment undergoes multi-stage efficient filtration and purification during discharge.

Benefits of technology

It enables immediate purification of emitted gases, reduces the risk of corrosion to the environment and equipment, improves the operational safety and maintainability of nuclear power plants, simplifies system structure, and reduces operation and maintenance costs.

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Abstract

This utility model relates to the technical field of nuclear power plant safety protection facilities, and in particular to a pressure relief device for nuclear power plants with a filtration structure. The device includes a pressure relief pipe with electrically controlled valves installed at both ends, and multiple filters are installed inside the pipe. By installing two filters inside the pressure relief pipe and filling them with different types of filter materials, this device can rapidly release pressure inside the containment vessel while efficiently removing harmful components such as metallic sodium vapor, hydrogen, and radioactive particles from the emitted gas. This effectively reduces harm to the environment and equipment. Compared to traditional pressure relief systems that rely solely on gas recovery bladders to collect gas, this device directly purifies the gas on-site, significantly improving the overall operational safety and environmental protection level of the nuclear power plant.
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Citation Information

Patent Citations

  • Nuclear power station containment antiknock pressure relieving systems

    CN207409271U