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Safety rod driving system of liquid heavy metal cooling reactor

A liquid heavy metal and driving system technology, applied in the field of reactor engineering and reactor equipment, can solve the problem that the safety rod driving system cannot directly apply liquid heavy metal to cool the reactor, and achieve the effect of simple structure, high system reliability and simple working principle

Inactive Publication Date: 2013-04-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

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Embodiment Construction

[0033] The specific structure and specific implementation methods of the present invention will be described in detail below in conjunction with the accompanying drawings.

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

[0035] Stack up:

[0036] The grabbing device 5 on the transmission rod locks the travel rod 12 together, the motor 1 drives the transmission rod 3, and presses down the travel rod 12, so that the safety rod bundle 16 connected with the travel rod 12 moves downward gradually, when the safety rod bundle 16 When the effective zone of the moving rod 12 is completely below the core, the upper end of the moving rod 12 just arrives at the electromagnet 7, and the electromagnet 7 is energized, and the magnetic force generated produces 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. T...

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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, belongs to the technical field of reactor engineering, 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 a 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 is 1670°C), due to the low lead and 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, which allows the pressure of the primary circuit to be lower, simplifies the design of the reactor device, and increases the reliability of the reactor device. The chemical activity of the lead-bismuth coolant is low. In the steam generator, it involves the emergency process of the loss of the seal of the primary circu...

Claims

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Application Information

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IPC IPC(8): G21C7/12
CPCY02E30/35Y02E30/39Y02E30/40Y02E30/30
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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