Reactor pressure vessel distributed simulation structure in integral simulation test

Abstract

The invention relates to the technical field of reactor pressure vessel simulation test, and specifically discloses a reactor pressure vessel distributed simulation structure in integral simulation test. The simulation structure comprises a reactor core simulation container and a ring cavity simulation container; the whole reactor core simulation container has a cylindrical structure, the upper end of the lower end of the reactor core simulation container are connected through flanges, the lower part of the reactor core simulation container is provided with a nozzle, the nozzle is connected to the ring cavity outlet adapter arranged in the lower end of the ring cavity simulation container through a pipeline, wherein the ring cavity simulation container simulates the upper part of a reactor container prototype ring cavity, and the pipeline connecting the reactor core simulation container and the ring cavity simulation container simulates the lower part of a reactor container prototype ring cavity. The simulation structure simulates the circular channel of a reactor pressure vessel prototype downward ring cavity, can better satisfy the geometric similarity principle and the dynamics principle, satisfies the economic and related simulation principle, and at the same time, is simple in structure. Moreover, the downward ring cavity simulation and the reactor core simulation are separated, and thus the measurement of reactor core flow is more convenient.

Description

technical field [0001] The invention belongs to the technical field of reactor pressure vessel simulation tests, and in particular relates to a distributed simulation structure of reactor pressure vessels in an overall simulation test. Background technique [0002] In the overall simulation test, the reactor pressure vessel and internal components need to be simulated, and the simulation methods are different according to the functional requirements of the test device. At present, there are mainly two simulation methods for the reactor pressure vessel descending annulus: integral descending annulus and external independent descending section. [0003] The test device adopts the integral descending ring chamber simulation method. The structure of the reactor pressure vessel simulation body is similar to the prototype reactor structure. The descending ring chamber is a ring chamber surrounded by the inner wall of the pressure vessel and the outer wall of the core basket. This ...

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Problems solved by technology

[0005] In the existing test devices that adopt the simulation method of external independent descending section, the simulation of the reactor descending ring chamber adopts the simulation method of external circular tube, although it can meet the geometric similarity criterion, dynamics criterion and other proportional simulation criteria, it cannot reflect the The multi-dimensional phenomenon of the flow field and temperature field of the descending ring cavity has obvious shortcomings

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