Spherical flue element equivalent model thermotechnical waterpower experimental apparatus

A spherical fuel element and equivalent model technology, applied in teaching models, educational appliances, instruments, etc., can solve the problem that the spherical fuel element cannot be used as an equivalent model structure, the spherical fuel element has no similarity, and cannot simulate spherical fuel elements, etc. problems, to achieve the effect of reducing the difficulty of assembly, facilitating replacement, and improving efficiency

CN102855802BActive Publication Date: 2014-04-23NUCLEAR POWER INSTITUTE OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2014-04-23

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Abstract

The invention discloses a spherical flue element equivalent model thermotechnical waterpower experimental apparatus comprising a pressure-bearing component, an electric heating component, an insulation component, a seal component, a pressure measurement component and the like, and field assembly and disassembly can be realized between the components. According to the spherical flue element equivalent model thermotechnical waterpower experimental apparatus, a banded fin thin rod bundle electric element is taken as an equivalent model structure of the spherical flue element, electrical heating method is realized, single-phase water flow and heat transfer experiment can be developed, and thermal-hydraulics of the spherical flue element can be reflected. The pressure measurement component can be assembled and disassembled on spot, consumables such as an O-shaped seal ring and a lead pressure pipe are convenient to replace, thereby reducing loss and cost. A grid spacer plays a role in transverse orientation for the banded fin thin rod bundle electric element, and a single-cone structure of the grid spacer can guide a plurality of the banded fin thin rod bundles to assemble, thereby reducing the difficulty of assembling and improving the efficiency of assembling. Copper braid is adopted to connect a lower conducting element and a lower conductive contact to realize flexible connection, so that the problem caused by electric component thermal expansion is effectively solved.
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Description

technical field

[0001] The invention relates to a thermal-hydraulic experiment device, in particular to a thermal-hydraulic experiment device of an equivalent model of a spherical fuel element. Background technique

[0002] Spherical fuel element water-cooled reactor is a new concept nuclear reactor, which expands the application of spherical fuel elements to light water reactors. Unlike high-temperature gas-cooled reactors, this type of reactor uses light water as a coolant, and the diameter of spherical fuel elements is smaller. The spherical structure and tiny size of the spherical fuel element reduce the possibility of critical heat flux (CHF); the all-ceramic material avoids the zirconium water reaction under accident conditions and avoids the hydrogen explosion accident; therefore, the spherical fuel element water-cooled reactor has Higher inherent security.

[0003] The research and development of water-cooled reactors with spherical fuel elements is facing a series ...

Examples

Embodiment

[0029] Such as Figures 1 to 4As shown, the spherical fuel element equivalent model thermal-hydraulic experiment device of the present invention includes an upper cylinder 21, the upper cylinder 21 is a cavity structure with upper and lower opening ends, and its internal cavity forms a cylindrical structure. The upper opening end of the cylinder body 21 is provided with an upper groove surface flange 4, and the upper cylinder body 21 is welded with the upper groove surface flange 4, and an upper conductive copper plate 24 is arranged on the end surface of the upper groove surface flange 4, and the upper groove surface The flange 4 and the upper conductive copper plate 24 are provided with an insulating gasket 3, and an outlet connecting pipe 23 is provided on the side of the flange on the upper groove surface, and an upper conductive plate 2 is installed on the upper conductive copper plate 24, and an upper end of the upper conductive plate 2 is placed. The upper flange cover ...