Built-in containment vessel filtering discharging system

Abstract

The invention provides a built-in containment vessel filtering discharging system. The built-in containment vessel filtering discharging system comprises a built-in water pool, a jet pipe, a steam separator, a metal fiber filter, a silver zeolite filter, and corresponding pipeline valves. The built-in containment vessel filtering discharging system is capable of realizing effective utilization ofthe water pool space in a containment vessel, is simple, and is more compact in designed form; a complex external arrangement system is canceled; and a better option is provided for small size nuclearpower devices such as ocean floating platforms. The built-in water pool is combined with the longitudinal jet pipe, so that effective utilization of water seal principles is realized, the change of the number of adopted pores at different flow amount conditions is ensured, the state of the flow speed in a jet nozzle is maintained to be optimal, and relatively aerosol and iodine removing efficiency is maintained always. In the built-in containment vessel filtering discharging system, a current limiting orifice plate is arranged at the tail end of the built-in containment vessel filtering discharging system, operation of the built-in containment vessel filtering discharging system is carried out under high pressure, equipment size is reduced, silver zeolite loading amount is reduce, equipment miniaturization is realized, so that it is beneficial for reducing of equipment cost and improving of the economical performance.

Description

technical field [0001] The invention relates to a built-in containment filter discharge system, which is a containment filter discharge system for preventing radioactive substances from being released to the environment under serious accidents, and belongs to the technical field of reactor safety facilities. Background technique [0002] The containment is the last barrier to prevent the release of radioactive material into the environment. When a serious accident occurs in the reactor, a large amount of steam and non-condensable gas will continue to increase in the containment vessel, and the pressure in the containment vessel will gradually increase, and eventually the integrity of the containment vessel may be destroyed due to overpressure, resulting in radioactive substances. A large number of leaks pose a threat to the surrounding environment and public health. The containment filtration and discharge system adopts an active pressure relief method to release the gas ac...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a built-in containment filtration and discharge system, the purpose of which is to simplify the complex system layout and post-treatment process, and at the same time improve the filtration efficiency of organic iodine, so as to overcome the shortage of space for the layout of small nuclear power devices such as ocean floating platforms, and the radioactivity Defects and deficiencies that matter cannot remove

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