Experimental simulation device for passive waste heat removal system with multi-loop coupled heat conduction

Abstract

The invention discloses a multi-loop coupling heat conduction passive waste heat discharge system test simulation device, including a reactor simulation body and a primary loop system, a passive waste heat discharge system, and a seawater system, wherein: the reactor simulation body and the primary loop system are used for simulating The thermodynamic state of the reactor in the state of shutdown or working condition accident; passive waste heat removal system: used to discharge the heat generated by the reactor simulation body and the primary circuit system, and transfer the heat to the seawater system through the emergency condenser; the seawater system: Simulate the input of seawater, and take away the heat of the emergency condenser and discharge it. The invention adds a waste heat discharge circuit control valve in the process of discharging the steam generated on the secondary side of the waste heat discharge heat exchanger through the natural circulation pipeline to the emergency condenser for cooling to form insufficient hot water, so as to simulate various working conditions Depending on the waste heat discharge situation, different discharge resistances can be adjusted through the control valve of the waste heat discharge circuit.

Description

technical field [0001] The invention relates to the field of waste heat discharge tests under reactor shutdown or working condition accidents, in particular to a test simulation device for a passive waste heat discharge system with multi-loop coupling heat conduction. Background technique [0002] For a long period of time after the shutdown of the reactor, waste heat is generated due to the fission of the remaining fuel and the decay of fission products, and the continuously generated waste heat gradually increases the temperature and pressure of the core; in order to ensure the safety of the reactor, the waste heat of the reactor must be discharged in a timely and reliable manner Otherwise, accidents such as core melting pressure boundary and containment damage will occur. Passive waste heat removal technology, as the main feature of advanced PWR nuclear power plants, has attracted the attention of nuclear power developed countries, and many advanced reactor types at home ...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a multi-loop coupled heat conduction passive waste heat removal system test simulation device to solve the problem that the passive simulation experiment device in the prior art does not meet the experimental requirements of the multi-loop coupled heat conduction passive waste heat discharge system. To achieve the purpose of being able to withstand high temperature, high pressure and high current, to realize the simulation of the prototype and to carry out thermal hydraulic experiments repeatedly

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