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Passive shutdown protection system of accelerator-driven undercritical system

A subcritical system and accelerator-driven technology, applied in emergency protection devices, reactors, nuclear power generation, etc., can solve problems that cannot be completely ruled out, misoperation of control system operators, etc.

Active Publication Date: 2015-03-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are all active, rely on external power or manual operation, and require a certain response time. The possibility of control system failure or misoperation by operators cannot be completely ruled out.

Method used

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  • Passive shutdown protection system of accelerator-driven undercritical system
  • Passive shutdown protection system of accelerator-driven undercritical system
  • Passive shutdown protection system of accelerator-driven undercritical system

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Embodiment Construction

[0013] The invention proposes a temperature-triggered passive shutdown protection system device for an accelerator-driven subcritical system. The present invention will be further described below in conjunction with accompanying drawing and example.

[0014] Such as figure 1 The passive shutdown protection system shown is a temperature-triggered intelligent shutdown device; the specific structure is that the soft magnetic material 1 is wrapped in the protection container 3, and the protection container 3 is installed on the shield cover of the top of the pile, and is composed of a spring 10 and an insulating lever 4 A lever, the permanent magnet 2 is connected with the insulating lever 4, the power negative pole 6 of the accelerator is installed on the upper end of the insulating lever 4, the positive pole 7 of the power supply of the accelerator is installed on the opposite side of the same level as the negative pole of the power supply, and the horizontal distance placed is ...

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Abstract

The invention discloses a passive shutdown protection system of an accelerator-driven undercritical system and belongs to the field of accelerator-driven undercritical system passive shutdown equipment. The passive shutdown protection system is a temperature-triggered intelligent shutdown device. When a coolant temperature of a soft-magnetic material at a core outlet is higher than a Curie-point temperature of the soft-magnetic material, the soft-magnetic material loses magnetism because of its physical properties and is not adsorbed by a permanent magnet so that a positive-negative of the accelerator switch is switched off and passive shutdown is realized. Through the passive shutdown protection system, after an accident, safe shutdown is realized without excessive dependence on timely and accurate determination by operators and supplement of external energy.

Description

technical field [0001] The invention belongs to the equipment field of passive shutdown systems of accelerator-driven subcritical systems. It specifically relates to a temperature-triggered passive shutdown protection system device for the backup shutdown system of the accelerator-driven subcritical system, so as to realize the inherent safety of the accelerator-driven subcritical system. The invention relates to nuclear reactor design technology, nuclear safety technology and related technologies. Background technique [0002] The development of nuclear energy will have to face the problem of nuclear waste treatment and disposal. Minor actinides (MA) and long-lived fission products (LLFP) in nuclear waste are highly radioactive, and some nuclides have a half-life as long as millions of years. If they are not disposed of safely, they will always cause harm to future generations of humans. Potential radiological threat. Accelerator-driven subcritical system (ADS) is "an em...

Claims

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Application Information

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IPC IPC(8): G21C9/02
CPCG21C9/02Y02E30/30
Inventor 金鸣吴国伟
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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