Adjustable charge-discharge type high temperature and high pressure helium gas experimental system and method

Abstract

The invention discloses an adjustable charge-discharge type high temperature and high pressure helium gas experimental system and an adjustable charge-discharge type high temperature and high pressure helium gas experimental method. The method comprises: supplying gas by a high pressure helium gas tank set, reducing the pressure of the helium gas to desired pressure through a pressure reducing valve, performing the closed-loop control on the pressure reducing valve by using a pressure transmitter, heating the helium gas by an electric heater, performing the closed-loop control on heating power of the electric heater by using a temperature transmitter, adjusting opening degree of a control valve according to a set flow value and a difference value measured by a flow gauge so as to obtain the helium gas with a rated pressure, temperature and flow quantity, and introducing the helium gas to a thermal hydraulic power experiment section to perform experiment. The high-temperature helium gas enters a gas storage tank for collection after a cooler exchanges heat, the helium gas recycled in the gas storage tank is pressed into the high pressure helium tank set through a helium gas compressor to carry out experiment repeatedly. According to the system provided by the present invention, a high temperature and high pressure section is only in an experimental section, so that high temperature and high pressure sealing performance requirements of other experimental devices in a loop are reduced, pressure, temperature and flow quantity of the experiment helium gas are adjusted, and requirements on a working condition for high temperature and high pressure helium gas thermal hydraulic power experiment can be met.

Description

technical field [0001] The invention relates to a pressure (3MPa-10MPa), temperature (20°C-350°C) and flow rate (5g / s-200g / s) adjustable high-temperature and high-pressure helium experimental system and method, belonging to fusion reactor helium cooling field of thermohydraulics. Background technique [0002] The tritium breeding envelope is the core component of the fusion reactor, and its main function is to carry out the high power density nuclear heat generated by the fusion high-energy neutron nuclear reaction for power generation, breed fusion fuel tritium and shield neutrons from the vacuum chamber and its external components damage. Due to the high heat flux density of plasma radiation in the reactor and the high power density nuclear heat of high-energy neutron deposition, the cooling of the first wall and its components and the removal of nuclear heat are one of the key technical issues of the thermal structure. High-pressure helium has good safety and neutron ph...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a pressure, temperature and flow adjustable high-temperature and high-pressure helium thermal-hydraulic characteristics experimental system, which overcomes the helium gas flow driven by a helium fan. The system has a single experimental working condition and is prone to leakage, and the system is simple in composition and easy to assemble

Images