A multi-loop natural circulation experimental device and method under six-degree-of-freedom motion conditions

Abstract

A multi-loop natural circulation experimental device and method under six-degree-of-freedom motion conditions, the device includes a six-degree-of-freedom motion simulation platform, consisting of a serpentine preheater, an experimental section, two casing condensers, and a pressurized circulation pump , a multi-loop main circulation circuit consisting of a voltage stabilizer and related equipment, a cooling water system consisting of a casing condenser, a plate heat exchanger, a cooling tower, a cooling fan, a cooling water tank and related equipment, a DC power supply, a low-voltage An electric heating system composed of a power controller and a transformer; the present invention also provides an experimental method for the device; the present invention can meet the experimental research on the characteristics of the natural circulation loop of a nuclear power system with various cooling loop arrangements under the six-degree-of-freedom motion condition needs, and can effectively reduce the error of the experimental system under motion conditions.

Description

technical field [0001] The invention belongs to the technical field of nuclear power equipment performance verification experiment research under motion conditions, and in particular relates to a multi-loop natural circulation experimental device and method under six-degree-of-freedom motion conditions. Background technique [0002] In nuclear reactors, natural circulation refers to the circulating flow caused by the density difference between the cold and hot fluids in the closed loop. Natural circulation can passively assist in the removal of residual heat from the core when the reactor is shut down, without providing any external driving force. Therefore, in the event of an accident such as a power outage in the entire plant, the reactor core can be effectively cooled to ensure the safety of the reactor core, which plays an important role in the safety of the reactor. [0003] Ships and nuclear power platforms at sea are affected by wind and waves, and the hull will prod...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a multi-loop natural circulation experiment under six-degree-of-freedom motion conditions in view of the fact that the above-mentioned experimental device or experimental system is not applicable or does not meet the needs of the nuclear engineering field for experimental research on the performance verification of nuclear power equipment under motion conditions. Device and method, the experimental device of the present invention can realize the motion of six degrees of freedom and the simulation of coupled motion; the relative position of the two cooling loops can be changed to realize the simulation of the natural circulation loop of different nuclear power systems; the heating can be changed according to the demand segment orientation to reduce the error caused by motion simulation

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