| 摘要 |
<p>The present invention relates to a water flooding system for cooling a nuclear power plant reactor cavity, comprising a reactor cavity disposed in a reactor containment casing, a pressure container disposed in the reactor cavity, and a heat insulation barrier located between the reactor cavity and the pressure container and enclosing the pressure container, and further comprising an external water flooding system and an elevated water flooding system disposed in the containment casing; the external water flooding system comprises an external water source, an external water flooding pipe connected with the external water source, a reactor cavity water flooding pump disposed on the external water flooding pipe, and a first isolation valve and a second isolation valve respectively disposed at the upstream and downstream of the reactor cavity water flooding pump; the external water flooding pipe penetrates through the containment casing to connect to the bottom of the heat insulation barrier; the elevated water flooding system comprises an elevated water flooding tank, an elevated water flooding pipe connected with the external water flooding pipe and the bottom of the elevated water flooding tank, and a third isolation valve disposed on the elevated water flooding pipe. The present invention has a stable and reliable performance, can effectively relieve the consequences of a serious accident, and ensure the integrity of a reactor pressure container in a serious accident.</p> |
