Control rod component and guide component structure applicable to supercritical reactor

A technology for guiding components and control rods, which is applied in the control of nuclear reactions, reactors, and reduction of greenhouse gases, etc., can solve problems such as sticking rods, achieve stable operation, achieve guidance and positioning, and avoid the effect of falling rod impact.

Inactive Publication Date: 2018-01-30
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the cross-shaped control rods in the existing supercritical reactor reduce the cross-shaped gap between the control rods and the fuel assembly to realize the problem of sticking rods when hydraulic buffering is easy to occur, and the purpose is to provide a It is suitable for the control rod assembly and guide assembly structure of supercritical reactors. Through mutual cooperation, it can effectively realize the purpose of hydraulic buffer function in supercritical reactors, and will not cause sticking, etc., and effectively prevent the impact of falling rods on the driving line. Structural damage, engineering importance for supercritical reactors

Method used

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  • Control rod component and guide component structure applicable to supercritical reactor
  • Control rod component and guide component structure applicable to supercritical reactor
  • Control rod component and guide component structure applicable to supercritical reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0049] A control rod assembly and guide assembly structure suitable for supercritical reactors, including a control rod assembly and a guide assembly; wherein, the control rod assembly includes a connecting handle assembly 1 and a cross-shaped control rod 3; the guide assembly includes a guide cylinder and Hydraulic buffer structures6, such as figure 1 and Figure 4 shown. In this embodiment, a buffer rod 2 is added to the connecting handle assembly 1, and the hydraulic buffer structure 6 is optimized at the same time. Through this setting, the sticking phenomenon caused by the deformation of the cross-shaped control rod can be effectively avoided, and the purpose of hydraulic buffering can also be effectively achieved. The specific settings are as follows:

[0050] The buffer rod 2 is arranged in parallel with the cross-shaped control rod 3 . The hydraulic buffer structure 6 includes a cross-shaped control rod channel 601 corresponding to the cross-shaped control rod 3, a ...

Embodiment 2

[0054] The difference between this embodiment and Embodiment 1 is that the structure of the connecting handle assembly 1 is optimized, and the purpose of mechanical buffering is achieved through the optimization of the connecting handle assembly 1 .

[0055] Such as Figure 1-Figure 3 As shown, the connecting handle assembly 1 includes a connecting sleeve 101 with an internal thread at the top, a star frame 103 fixed on the outer wall of the connecting sleeve 101, a cavity body inside the bottom end of the connecting sleeve 101, and a hollow body arranged in the hollow The guide rod 102 inside the cavity and arranged axially along the connecting sleeve 101, the buffer spring 104 sleeved on the guide rod 102, and the buffer spring 104 sleeved on the guide rod 102 with the bottom end connected to the buffer spring 104 and the top end extending into The buffer piston 105 in the cavity.

[0056] That is, the upper end of the connecting handle assembly 1 is provided with a connect...

Embodiment 3

[0059] The difference between this embodiment and Embodiment 1 is that this embodiment optimizes the structure of the guide cylinder, such as Figure 4-Figure 7 As shown, the guide cylinder includes an upper guide cylinder 4 and a lower guide cylinder 5; the upper guide cylinder is composed of an upper guide cylinder cylinder 401, an upper guide cylinder flange fastener 402, a water hole 403 and an upper guide positioning key 404; The guide cylinder 5 is composed of a lower guide cylinder body 501 , a lower guide cylinder flange fastener 502 and a lower guide positioning key 503 .

[0060] The upper guide cylinder 4 includes an upper guide cylinder body 401, an upper guide cylinder flange fastener 402 arranged at the bottom end of the upper guide cylinder body 401, arranged in the upper guide cylinder body 401 and along the upper guide cylinder body 401 The axially arranged upper guide positioning key 404, and the water flow hole 403 arranged on the upper guide cylinder body 4...

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PUM

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Abstract

The invention discloses a control rod component and guide component structure applicable to a supercritical reactor, and aims to solve the problem that sufficient hydraulic buffer is not available byreducing the cross gap between a cross control rod and a fuel component in a conventional supercritical reactor. The structure comprises a control rod component and a guide component, wherein the control rod component comprises a connecting handle component, and a cross control rod of which the top end is mounted on the connecting handle component; a buffer rod parallel to the cross control rod isarranged on the connecting handle component; the guide component comprises a guide cylinder, and a hydraulic buffer structure which is arranged at the bottom end of the guide cylinder and is matchedwith the buffer rod to achieve hydraulic buffer. The structure has the advantages that hydraulic buffer is achieved, a rod clamping phenomenon is avoided, the hydraulic buffer effect is adjusted, andthe operation security is improved.

Description

technical field [0001] The invention relates to the technical field of nuclear reactor engineering, in particular to a structure of a control rod assembly and a guide assembly suitable for a supercritical reactor. Background technique [0002] In a reactor, the control rod structure can quickly absorb neutrons and adjust the reactivity of the reactor; the guide structure is one of the most important precision parts of the control rod drive line, and its most basic function is to provide control rods for lifting and lowering Provide reliable guidance and protection to ensure that the control rods can be quickly inserted into the core of the reactor during start-up, power regulation, power maintenance, and normal and accident conditions to achieve safe shutdown. [0003] At present, the control rod assemblies used in commercial pressurized water reactors at home and abroad are basically bundled rod control rod assemblies, and their guide structures only provide the necessary g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C7/12G21C9/02
CPCY02E30/30
Inventor 刘晓张宏亮罗英肖聪李翔柴晓明杜华方才顺王留兵饶琦琦颜达鹏李燕
Owner NUCLEAR POWER INSTITUTE OF CHINA
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