Visual pool type boiling and critical heat flux density test system and test method

A technology of critical heat flux and test system, which is applied in the field of visualized pool boiling and critical heat flux test system, can solve the problems that the types of test data are not complete enough, the angle of the test section cannot be adjusted and visualized, and achieve practical guiding value , the effect of a wide range of parameters

Inactive Publication Date: 2018-09-14
XI AN JIAOTONG UNIV
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Problems solved by technology

However, because the angle control and visualization cannot be realized i

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  • Visual pool type boiling and critical heat flux density test system and test method
  • Visual pool type boiling and critical heat flux density test system and test method
  • Visual pool type boiling and critical heat flux density test system and test method

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in detail:

[0024] like figure 1 , Figure 2a and Figure 2b As shown, the present invention is a visual pool type boiling and critical heat flux test system, the test system includes a winch 10, a water tank electric heating rod 8, a transparent water tank 9 and a test section; the test section includes a stainless steel waterproof cover 5, a suspension ring 6 , red copper block 1, electric heating rod 2 in the test section, insulation cotton 3, K-type thermocouple 4; the test section has several types with different heat transfer areas, which are 2cm×2cm, 4cm×4cm, 8cm×8cm, 16cm×16cm , can be conveniently replaced according to different experimental requirements. During the test, the heat exchange surface of the test section, that is, the bottom wall of the copper block 1, is completely immersed in the heat exchange medium of the PC water tank to realize the hea...

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Abstract

The invention discloses a visual pool type boiling and critical heat flux density test system and a test method. The visual pool type boiling and critical heat flux density test system comprises a transparent water tank, electric heating rods, a test section and winches. The transparent water tank is used for loading heat exchange working media, the electric heating rods are arranged at the bottomof the water tank, the test section is suspended in the water tank, and the winches are connected with the test section by steel wire ropes and are used for adjusting inclination angles of the test section. The visual pool type boiling and critical heat flux density test system and the test method have the advantages that pool type boiling and CHF (critical heat flux) tests can be carried out, accordingly, data of CHF on the outer surfaces of lower seal heads of pressure vessels under the conditions of severe reactor accidents can be obtained, and safety design can be carried out.

Description

technical field [0001] The invention relates to the technical field of research on the characteristics of decay heat removal of melt in the lower head of a pressure vessel under severe reactor accident conditions, in particular to a visual pool boiling and critical heat flux (Critical heat flux, CHF) test system and method. Background technique [0002] If the reactor core of a nuclear power plant cannot be cooled sufficiently under severe accident conditions, the continuous accumulation of decay heat will cause the core to heat up sharply and melt, and the melted core melt will gradually migrate downward and melt through the support plate. Falling into the lower head to form a debris bed molten pool structure. Corresponding to the extreme condition of full core melting, the melting pool in the lower head generates natural convection with high Rayleigh number under the action of the internal heat source, and transfers heat to the wall of the lower head. If the forced coolin...

Claims

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Application Information

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IPC IPC(8): G21C17/10
CPCG21C17/10Y02E30/30
Inventor 苏光辉张亚培邓匡汉罗琦田文喜秋穗正余红星
Owner XI AN JIAOTONG UNIV
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