Cold test mis-centering device for reactor control rod drive wire of nuclear power plant

A nuclear power plant reactor and cold-state test technology, applied in the field of nuclear power, can solve the problems of easy vibration of the driving mechanism, large test error, and influence on test results, etc., and achieve the effects of easy promotion, reliable operation, and simple device structure

Inactive Publication Date: 2014-01-08
中广核工程有限公司 +1
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  • Abstract
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Problems solved by technology

However, the existing misalignment device for the control rod drive line of the nuclear power plant reactor has the following defects: the rope pulling amount cannot be accurately measured, and the test error is large; after pulling, the upper part of the control rod drive mechanism is stres

Method used

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  • Cold test mis-centering device for reactor control rod drive wire of nuclear power plant
  • Cold test mis-centering device for reactor control rod drive wire of nuclear power plant
  • Cold test mis-centering device for reactor control rod drive wire of nuclear power plant

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Embodiment Construction

[0029] In order to make the purpose, technical solution and technical effect of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0030] The nuclear power plant control rod drive line cold state test device adopts the prototype parts of the reactor drive line, except that the fuel assembly pellets use lean shafts or metal molybdenum blocks, other parts of the drive line, including the control rod drive mechanism, control rod guide cylinder assembly , control rod assembly, core upper plate, core lower plate, guide cylinder support plate, etc. are all the same as the reactor prototype.

[0031] see figure 1 and figure 2 As shown, it is a cross-sectional schematic view of the first em...

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Abstract

The invention discloses a cold test mis-centering device for a reactor control rod drive wire of a nuclear power plant. The cold test mis-centering device comprises a supporting ring and an adjustment piece, wherein the supporting ring is fixedly arranged on a test body, wherein an eccentric hole is formed in the supporting ring; the center axis of the eccentric hole shifts from the center axis of the supporting ring for a first eccentricity; the adjustment piece is cascaded on the supporting ring and is connected with a control rod drive mechanism; a center hole corresponding to the eccentric hole is formed in the adjustment piece; the eccentric hole and the center hole are used for jointly containing the control rod drive mechanism; the center axis of the control rod drive mechanism shifts from the center axis of the center hole for a second eccentricity; the adjustment piece can rotate or slide relative to the supporting ring to adjust the mis-centering value of the center axis of the control rod drive mechanism relative to the center axis of the supporting ring. The cold test mis-centering device for the reactor control rod drive wire of the nuclear power plant can precisely adjust the mis-centering value of the center axis of a control rod guide barrel relative to the center axis of the supporting ring through motion of the adjustment piece relative to the supporting ring.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically relates to a misalignment device for a nuclear power plant reactor control rod drive line in a cold test. Background technique [0002] The reactor control rod driving line is an important guarantee for the safe operation of the nuclear power plant. When the reactor is running, the driving mechanism arranged on the upper part of the pressure vessel drives the control rod assembly to move up and down in the core to control the rapid change of the reactivity of the core and realize the start of the reactor. , power regulation, normal shutdown and emergency shutdown under accident conditions. The reliability of the reactor control rod drive line is directly related to the operational safety of the reactor. [0003] Theoretically, all parts of the drive line can be accurately centered, but this is not the case in reality, because: the dimensions of the parts cannot be abs...

Claims

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Application Information

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IPC IPC(8): G21C17/00
CPCY02E30/30
Inventor 唐茂张平刘言午孙振国于晓雷张明乾段远刚冉小兵戴长年
Owner 中广核工程有限公司
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