Anti-explosion pressure release device of reinforced concrete safety shell of nuclear power plant

Abstract

The invention relates to an anti-explosion pressure release device of a reinforced concrete safety shell of a nuclear power plant. The anti-explosion pressure release device comprises the following constituting parts: a piston, a protection cover as well as a safety airbag, wherein the piston is fixedly sealed at a pressure release hole in the top of a safety shell; the protection cover is arranged on the outer side of the piston in a sealing and covering manner; the protection cover is solidly connected with the safety shell; the safety airbag is used for absorbing and storing a radioactive gas which is ejected out from the pressure release hole when the piston is cracked or is ejected out under stress; the safety airbag is arranged at the peripheral side of the pressure release hole in a covering manner, or is arranged on the protection cover. By adopting the anti-explosion pressure release device, the difficulty of pressure release is solved when the reinforced concrete safety shell of the nuclear power plant is internally exploded or subjected to internal high pressure, so that serious nuclear leak which can be caused by overall damage of the safety shell is avoided, the reliable, easily detached and removable pressure release device is provided for safety operation of the nuclear power plant, the pressure release device can be widely applied to design of conventional pressurized water reactor nuclear power plants and has wide market prospects.

Description

technical field [0001] The invention belongs to the technical field of nuclear power engineering, and in particular relates to an explosion-proof pressure relief device for a reinforced concrete containment vessel of a nuclear power plant. Background technique [0002] As a stable and clean energy, nuclear energy has developed rapidly in recent decades. my country's "Nuclear Power Medium and Long-Term Development Plan (2011-2020)" and "Energy Development Strategic Action Plan (2014-2020)" propose that by 2020, the installed capacity of nuclear power will reach 58 million kilowatts. At present, the scale of nuclear power units under construction in my country ranks first in the world, accounting for more than 40% of the scale under construction in the world, and it is the country with the fastest development of nuclear power in the world. However, the safe operation of nuclear power plants is still a key concern in the development of nuclear power. The Fukushima nuclear acci...

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Problems solved by technology

[0004] In order to overcome and avoid the deficiency that the internal explosion high pressure of the existing nuclear power plant containment cannot be released, the present invention proposes a nuclear power plant reinforced concrete containment explosion-proof pressure relief device, which can effectively prevent hydrogen from accumulating inside the containment and prevent The occurrence of safety accidents that threaten the containment due to deflagration or explosion caused by excessive hydrogen concentration

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