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Nano-material control rod for supercritical water reactor

A technology of supercritical water reactors and nanomaterials, which is applied in the field of nanomaterial control rods, and can solve problems such as thermal conductivity decline

Inactive Publication Date: 2012-02-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] 3. The thermal conductivity decreases after irradiation

Method used

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  • Nano-material control rod for supercritical water reactor
  • Nano-material control rod for supercritical water reactor
  • Nano-material control rod for supercritical water reactor

Examples

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Embodiment Construction

[0033] The following examples can enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention in any way.

[0034] The invention is a nanometer material control rod for supercritical water reactors designed for supercritical water reactors. The nanometer material control rod for supercritical water reactor is a reactor shutdown device which utilizes the excellent performance of nanometer boron carbide and is suitable for supercritical conditions. The present invention will be further described below in conjunction with accompanying drawing.

[0035] Such as figure 1 As shown, the nanomaterial control rods used for supercritical water reactors should be inserted into the control rod guide pipe 2 in the water rod 4 for shutdown in case of an accident. The water rod 4 is 25MPa moderator water with a temperature of about 357 °C, for moderating neutrons. Inside the control rod guide tube 2 are nanometer materia...

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Abstract

The invention discloses a nano-material control rod for a supercritical water reactor, belonging to the field of nuclear power plant safety and mechanical equipment technologies. The nano-material control rod is composed of nano-boron carbide and a control rod, and the nano-boron carbide is filled in the cladding of the control rod. By adopting the nano-material control rod within, the supercritical water reactor has the advantages of high neutron absorption ability, high neutron capture section and wide absorption energy spectrum, no secondary radiation pollution, high resistance to radiation and no turgidity of the control rod under high supercritical temperatures and is capable of smoothly inserting a reactor core in an accident, stably stopping the reactor and reducing the damage of the accident so that the objectives of controlling the power of the supercritical water reactor and guaranteeing the safety of the supercritical water reactor are achieved. In the accident, the nano-material control rod is inserted into a control rod guide tube of the supercritical water reactor so as to stop the supercritical water reactor.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant safety and mechanical equipment, and in particular relates to a nanometer material control rod for a supercritical water reactor. Background technique [0002] Boron carbide is a material with high melting point, high strength, light specific gravity and hard texture. It has good chemical stability and is not corroded by acid and alkali. Due to the B in the boron element 10 The isotope has a large thermal neutron absorption cross section, and boron carbide has good compatibility with stainless steel and other materials, so in the atomic energy industry, it is used as a neutron absorbing material to make reactor control rods and combustible poisons for Regulate and control the operation of the reactor and shut down the reactor. [0003] Because boron carbide has various excellent properties and is a relatively cheap material, it is widely used in various types of reactors, and it is u...

Claims

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Application Information

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IPC IPC(8): G21C7/10G21C7/117
CPCY02E30/30
Inventor 周涛王晗丁罗峰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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