Experiment device and experiment method for simulating blowout depressurization of fourth-stage automatic depressurization system for reactor

Abstract

The invention discloses an experiment device and an experiment method for simulating blowout depressurization of a fourth-stage automatic depressurization system for a reactor. The experiment device comprises a pressure container, a T-shaped tube experiment section, a steam-water separator, a capturing water tank, a heating water tank, a second filter and a high-temperature pump, wherein a horizontal heat tube section of the pressure container is connected with a horizontal branch tube of the T-shaped tube experiment section; a vertical branch tube of the T-shaped tube experiment section is connected with the capturing water tank through the steam-water separator; the capturing water tank is connected with the heating water tank through a pipeline; the heating water tank is connected with a water inlet of the pressure container through the filter, the high-temperature pump and a preheating section. The experiment device can execute two experiments for converting air into water and converting steam into water; the air-to-water experiment can be used for executing mechanism-based experiments such as entrainment start and a steady-state entrainment rate, and the steam-to-water experiment can be used for executing the mechanism-based experiments and also executing a blowout pressure release simulation experiment of the ADS-4 (fourth-stage automatic depressurization system). The experiment device has the advantages of high safety, high experiment data precision, easiness in mounting and maintenance and the like.

Description

technical field [0001] The invention belongs to the technical field of experimental devices, and in particular relates to an experimental device and method for spraying and depressurizing the fourth-stage automatic depressurization system (ADS-4) of a simulated reactor. Background technique [0002] In the AP1000, the function of the Automatic Depressurization System (ADS) is to reduce the reactor coolant system pressure in a controlled manner during an accident for safety injection. The ADS is composed of four-stage decompression valves. The 1st, 2nd and 3rd decompression pipelines are all connected to the pressure stabilizer, and the pipeline outlet is connected to a sprinkler in the refueling water tank built in the containment. The fourth-level automatic depressurization system ADS-4 is connected to the reactor heat pipe section, and discharges the steam in the reactor to the containment environment to achieve the purpose of depressurization. After the ADS-4 valve is op...

AI Technical Summary

Problems solved by technology

However, the test pressure is only slightly higher than atmospheric pressure, and the corresponding pressure when the AP100010-inch ADS-4 valve is opened is about 0.6 MPa, so this test cannot completely simulate the ADS-4 spraying and pressure relief conditions

In addition, the ATLATS experiment is a cold experiment, using air-water as the medium, and does not consider the effects of physical properties, mass and energy exchange between air and water vapor on entrainment

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