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Safety rod driving system of liquid heavy metal cooling reactor

A liquid heavy metal and driving system technology, which is applied in the fields of reactor engineering and reactor equipment, can solve the problem that the safety rod driving system cannot be directly applied to the liquid heavy metal to cool the reactor, and achieves the effects of simple structure, high system reliability and simple working principle.

Inactive Publication Date: 2015-04-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the safety rod drive system in ordinary water reactors and sodium-cooled fast reactors cannot be directly applied to liquid heavy metal cooled reactors

Method used

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  • Safety rod driving system of liquid heavy metal cooling reactor
  • Safety rod driving system of liquid heavy metal cooling reactor
  • Safety rod driving system of liquid heavy metal cooling reactor

Examples

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Embodiment Construction

[0033] The specific structure and specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] The specific working mode of the safety rod driving system of the liquid heavy metal cooling reactor of the present invention is as follows:

[0035] Heap:

[0036] The grabbing device 5 on the transmission rod locks the moving rod 12 together. The motor 1 drives the transmission rod 3 and presses down the moving rod 12, so that the safety rod bundle 16 connected with the movable rod 12 gradually moves downward. When the effective area is completely below the core, the upper end of the moving rod 12 just reaches the electromagnet 7, and the electromagnet 7 is energized, and the generated magnetic force generates a binding force on the moving rod 12, and the moving rod 12 relies on the restraint of the electromagnet 7 to overcome the buoyancy. The grasping device 5 on the transmission rod 3 is loosened, and the motor 1...

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Abstract

The invention discloses a safety rod driving system of a liquid heavy metal cooling reactor, which belongs to the field of nuclear reactor equipment. The system comprises a motor (1), a rod position indicator (2), a transmission rod (30), a movable damper (4), a gripping device (5), an electromagnet (7), a moving rod guide tube (10), a moving rod (12), a control rod baffle plate (13), another gripping device (15) and a shell (6). According to the safety rod driving system, the safety rod is positioned at the lower end of a reactor core in power operation on the basis of the characteristics that a liquid heavy metal solution is large in density and an object bears large buoyancy in the liquid heavy metal solution; and under an emergency working condition, the safety rod is inserted into the reactor core by virtue of the buoyancy, and the safe reactor shutdown is realized. The safety rod driving system meets the requirements on shutdown of the nuclear reactor, and is simple in structure, reliable and convenient to repair.

Description

Technical field [0001] The invention relates to the field of reactor equipment, belonging to the technical field of reactor engineering, and in particular to a safety rod driving system for a liquid heavy metal cooling reactor. Background technique [0002] The coolant used in the liquid heavy metal cooling reactor is liquid heavy metal, such as the commonly used lead-bismuth alloy eutectic mixture (lead accounts for ~44%, bismuth accounts for ~56%, melting point ~125°C, boiling point 1670°C), due to the low lead-bismuth The eutectic mixture has a higher boiling point, and the temperature of the inlet and outlet coolant is much lower than the boiling point. This allows a lower pressure in the primary circuit, simplifies the design of the reactor device, and increases the reliability of the reactor device. The chemical activity of lead-bismuth coolant is low. In the steam generator, it involves the emergency process of the loss of the primary circuit seal and the leakage in the ci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C7/12
CPCY02E30/35Y02E30/39Y02E30/30
Inventor 潘晓磊金鸣王明煌焦小伟吴宜灿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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