| 摘要 |
A nuclear reactor power control system which consists of multiple modules introduced at different positions within the reactor moderator. Each module contains a gas room (2) whose gas content is at the same temperature and pressure as its surrounding moderator (8) at the desired reactor power, and a small reservoir (3) of a strong neutron absorber liquid. The liquid is separated from the gas in a module by a mobile piston (4). The liquid reservoir is connected to a few small diameter extension pipes (6) that extend into the reactor moderator. The neutron absorber liquid is kept at certain level in these extension pipes (6) by means of some mobile plugs (7) that are regulated by the moderator pressure directly, or by an equal pressure. When the reactor power increases, the moderator temperature will increase and so will the module's gas temperature. The gas will isobarically expand; pushing the mobile piston (4) which will push the neutron absorber liquid far into the extension pipes (6), adding substantial negative reactivity to the reactor; reducing its power. |
