Implementation method of fast reactor type coupled nuclear reaction and nuclear reactor thereof

A technology for a nuclear reactor and an implementation method, which is applied in the fields of nuclear reactors, nuclear reaction control, non-uniform reactors, etc., can solve problems such as non-referencing, and achieve the effects of increasing neutron exchange efficiency, simple nuclide separation, and mild physical conditions.

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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Can fast neutron cores perform fast-thermal neutron coupled nuclear reactions? Can the moderator be isolated from the fast neutron core? Is it possible to unbind the moderator and coolant functions? Can a moderator be used outside the core to improve the nuclear reaction efficiency of a fast reactor? Is it possible to reduce the physical conditions inside the nuclear reactor vessel and implement on-line extraction of breeding fuel? So far, there is no relevant literature on the use of moderators in fast reactors or fast-thermal neutron coupled nuclear reactors with fast neutron cores as the main body

Method used

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  • Implementation method of fast reactor type coupled nuclear reaction and nuclear reactor thereof
  • Implementation method of fast reactor type coupled nuclear reaction and nuclear reactor thereof
  • Implementation method of fast reactor type coupled nuclear reaction and nuclear reactor thereof

Examples

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Effect test

Embodiment 1

[0188] Embodiment 1: Implementation method of fast reactor type coupled nuclear reaction

[0189] Such as Figure 9 and Figure 10 Shown:

[0190] The main vessel of the reactor is divided into a fission pool 201 and a moderator pool 301 which are completely isolated from each other. A core 250 is set in the fission pool. The core has the characteristics of a fast neutron core, and the moderator pool 301 has a built-in moderator.

[0191] The fission cell 201 and the moderation cell 301 are inlaid or combined in a movable manner, so that the structure and function of the two are coupled, and an insulating layer is set between the fission cell 201 and the moderation cell 301 to block the heat exchange between the two, so that the slow The fission pool 301 can be controlled in a state close to normal temperature and pressure; the moderator is separated from the main coolant, and the two are no longer bound in structure and function. There is no moderator in the fission pool 20...

Embodiment 2

[0201] Example 2: Dual Moderator Pool Coupled Nuclear Reactor

[0202] Such as Figure 7 , Figure 8 As shown, the double-moderated tank coupled nuclear reactor is a medium-sized or larger fixed reactor, which is suitable for power plants, heat supply and seawater desalination. The main vessel of the reactor is a coupling structure of double moderator tanks, and the main vessel is of a detachable and combined structure, and has a main vessel shell 101 . The reactor has internal and external double moderator pools, the inner moderator pool 302 is located in the center of the reactor and is a barrel-shaped pool structure, the outer moderator pool 303 is located outside the reactor and is an annular pool structure; the fission pool 201 is located in the middle of the two moderator pools and is annular pool structure. Both the inner and outer walls of the fission cell 201 are provided with large-area thin-walled neutron exchange windows. The top cover of the fission pool is se...

Embodiment 3

[0203] Example 3: Fixed Single Moderator Pool External Coupled Nuclear Reactor

[0204] Such as Figure 9 , Figure 10As shown, the fixed single moderator tank coupled external nuclear reactor is a small to large reactor, suitable for power plants, heat supply and seawater desalination. The main container is a detachable and combined structure, and has a main container shell 101 . The main vessel of the reactor is an external coupling structure of a single moderator pool, the fission pool is located in the center in a barrel-shaped pool structure, and the moderator pool is located outside the fission pool in an annular pool-shaped structure. The outer wall of the fission cell 201 is provided with a large-area thin-walled neutron exchange window. The top cover of the fission pool is sealed with a metal sealant, the metal sealant is a fusible heavy metal alloy, and the top cover of the fission pool is a high-strength light-weight top cover. The top cover of the moderator tan...

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PUM

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Abstract

Disclosed are an implementation method for a fast reactor type coupled nuclear reaction, a nuclear reactor and a fuel element therefor. A main reactor vessel of the nuclear reactor comprises a fission pool (201) and a moderation pool (301) which are completely isolated from each other but coupled with each other, a reactor core (250) with fast neutron characteristics is arranged in the fission pool (201), moderator is arranged in the moderation pool (301), primary coolant is separated from the moderator, and the primary coolant passes through the fission pool (201) rather than the moderation pool (301); and a heat insulation layer is arranged between the fission pool (201) and the moderation pool (301) to block the heat exchange therebetween. Neutrons are allowed to pass through between the fission pool (201) and the moderation pool (301), so that the fission pool (201) and the moderation pool (301) can perform neutron exchange and a coupled nuclear reaction, fast neutrons produced by the reactor core (250) and moderated neutrons reflected into the fission pool (201) from the moderation pool (301) can make the reactor core (250) simultaneously perform coupled nuclear reactions induced by the fast neutrons and the moderated neutrons, thermal neutron nuclear reaction can take place in the moderation pool (301), and the moderation pool (301) can be provided with a nuclear control system and can implement ex-core coupled nuclear control. Because the moderation pool (301) of the fast reactor type coupled nuclear reactor is provided with a thorium breeding fuel system, bred fuel can be extracted on line, nuclear element separation is safe and simple, and a solution is provided for the bottleneck of the thorium reactor technology.

Description

technical field [0001] The present invention relates to nuclear fission reactors and methods of operation thereof. Background technique [0002] There are two groups of U-238 / Pu-239 and Th-232 / U-233 known to be available on the earth for heavy nuclear fission nuclide conversion combinations, and the corresponding main nuclear materials are: the former corresponds to natural uranium, nuclear waste (including depleted uranium), which corresponds to thorium. In addition to nuclear fusion energy, it is known that the energy contained in thorium and uranium on the earth is much greater than the sum of other mineral energy reserves, of which thorium reserves are 4 times larger than uranium. If fast reactors are used, the utilization rate of nuclear fuel can be increased to 60-70%. Optimistic estimates believe that the globally available thorium and uranium resources can maintain all the energy needs of human beings for more than 20,000 years. However, the fuel utilization rate o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/28G21C1/16G21C7/26G21C5/12G21C5/20G21C3/60G21C3/62G21C3/04
CPCG21C1/00G21C3/16Y02E30/30
Inventor 陈安海陈邦才陈昆
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