Multi-loop natural circulation experimental device under six-degree-of-freedom motion conditions and method therefor

A multi-loop natural circulation experimental device under six-degree-of-freedom motion conditions, comprising:

• a six-degree-of-freedom motion simulation platform, a multi-loop main circulation loop, a cooling water system, and an electric heating system;
• wherein:
• the six-degree-of-freedom motion simulation platform comprises a mechanical platform, a driving system and a control system;
• the multi-loop main circulation loop comprises a serpentine preheater (4), an experimental section (1), pressurized circulating pump (7), a voltage stabilizer (6), an electromagnetic flowmeter (5), an exhaust valve (14), and two sleeve-tube condensers (15);
• wherein the serpentine preheater (4), wherein the experimental section (1), and the pressurized circulating pump (7) are fixed to the six-degree-of-freedom motion simulation platform through a truss structure on the mechanical platform;
• arc-shaped guide rails (17) are fixed on the truss structure, and the two sleeve-tube condensers (15) are respectively fixed on the arc-shaped guide rails (17), and an ascending section and a descending section of the multi-loop main circulation loop are respectively connected to an inlet and an outlet of the two sleeve-tube condensers (15) through a T-shaped three-way (16) and hoses, forming two cooling circuits of the multi-loop main circulation loop;
• the experimental section (1) is connected to the ascending section of the multi-loop main circulation loop through a rotating insulating flange (22), the serpentine preheater (4), the ascending section and the descending section are respectively welded and connected, pressurized circulation pump (7) and the exhaust;
• the exhaust valve (14) is connected with the entrance of the descending section, the voltage stabilizer (6) is connected with the entrance section of the serpentine preheater (4), and the electromagnetic flowmeter (5) is installed in the entrance section of the serpentine preheater (4);
• the cooling water system comprises the two sleeve-tube condensers (15), a plate heat exchanger (13), a cooling tower (11), a cooling fan (12), a cooling water tank (10), a circulating pump, and an electromagnetic flowmeter;
• wherein two cooling water channels of the two sleeve-tube condensers (15) are connected in series with stainless steel hoses and connected to a primary side of the plate heat exchanger (13) to form an indoor part of the cooling water system;
• a secondary side of the plate heat exchanger (13) is connected with the cooling water tank (10) and the cooling tower (11) to form an outdoor part of the cooling water system;
• the cooling fan (12) is installed inside the cooling tower (11);
• the indoor and outdoor parts of the cooling water system are respectively installed with an electromagnetic flow meters, a gate valve and a circulating pump;
• the electric heating system comprises:
• a DC power supply (2), a low-voltage power controller, and a transformer (3);
• wherein the DC power supply (2) is fixed on the upper table (8) of the mechanical table and outputs constant power to the experimental section (1), an input end of the transformer (3) is connected with the low-voltage power controller, and the output end is connected with the serpentine preheater (4) to output constant power to the preheater (4).