Reactor pressure vessel and three-loop reactor structure

The invention discloses a reactor pressure vessel and a three-loop reactor structure. The reactor pressure vessel comprises a pressure vessel body and at least one direct injection connecting pipe arranged on the pressure vessel body, an inlet connecting pipe and an outlet connecting pipe are arranged on the pressure vessel body, the direct injection connecting pipe is asymmetrically arranged between the inlet connecting pipe and the outlet connecting pipe, and the central axis of the direct injection connecting pipe is located below the central axis of the inlet connecting pipe and the central axis of the outlet connecting pipe. According to the pressure vessel, the direct injection connecting pipe is arranged on the pressure vessel body and used for directly injecting the safety injection coolant into a reactor, and the situation that part of the safety injection coolant is lost due to injection through a main pipeline and breakage of the main pipeline is avoided; when the main pipeline cold pipe section br