Efficient heat-conducting heat pipe reactor fuel element

Abstract

The invention relates to an efficient heat-conducting heat pipe reactor fuel element. The fuel element comprises a nuclear fuel, a cladding pipe, a heat pipe and a heat conduction ring. The cladding pipe comprises an inner wall and an outer wall which are arranged in a sleeved manner, the heat pipe is arranged in an inner hole of the inner wall, and the heat conduction ring sleeves the heat pipe and is located between the heat pipe and the inner wall. A plurality of axial heat conduction plates and a plurality of radial heat conduction plates are arranged between the inner wall and the outer wall of the cladding pipe, the cladding pipe is divided into a plurality of fuel areas used for being filled with the nuclear fuel by the axial guide plates and the radial guide plates, and stress release grooves are formed in the axial guide plates. According to the efficient heat-conducting heat pipe reactor fuel element, the nuclear fuel is arranged in the cladding pipe, and nuclear heat generated by operation is transferred to the heat pipe through the wall of the cladding pipe; the axial and radial heat conduction plates are arranged in the cladding pipe and are used for assisting efficient heat conduction; the heat pipe is arranged in the center of the fuel element and is used for guiding heat of a reactor core out of the reactor; and the heat conduction ring is arranged between the heat pipe and the cladding pipe, and contact heat transfer between the heat pipe and the cladding pipe is achieved.

Description

technical field [0001] The invention relates to the technical field related to reactors, in particular to a high-efficiency heat conduction heat pipe reactor fuel element. Background technique [0002] The heat pipe reactor is currently a reactor with good prospects for space nuclear power applications. The passive heat conduction of nuclear fuel with heat pipes is a hot spot in foreign space nuclear power research. The existing nuclear fuel is UO 2 Mainly, the thermal conductivity is low, which is the bottleneck restricting the increase of power density and the reduction of volume and weight of the reactor. The share of nuclear fuel is reduced, which is not conducive to the small and lightweight design of the reactor. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-efficiency heat-conducting heat pipe reactor fuel element for the deficiencies of the prior art. [0004] The technical solution of the pres...

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Problems solved by technology

[0002] The heat pipe reactor is currently a reactor with good prospects for space nuclear power applications. The passive heat conduction of nuclear fuel with heat pipes is a hot spot in foreign space nuclear power research. The existing nuclear fuel is UO 2 Mainly, the thermal conductivity is low, which is the bottleneck restricting the increase of power density and the reduction of volume and weight of the reactor. The share of nuclear fuel is reduced, which is not conducive to the small and lightweight design of the reactor

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