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Single spent fuel rod transfer container and using method thereof

A transfer container and spent fuel technology, applied in portable protective containers, nuclear engineering, etc., can solve the problems of time-consuming, pendulum caused by fuel rods, etc., and achieve the effects of easy maintenance, good stability, and avoiding radiation damage

Active Publication Date: 2019-12-31
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This method of use has the following problems. After the fuel rods are translated, the fuel rods will have a pendulum. It is necessary to wait for the fuel rods to stop or when the swing is small before inserting them into the transfer container, so it takes time to wait.

Method used

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  • Single spent fuel rod transfer container and using method thereof
  • Single spent fuel rod transfer container and using method thereof
  • Single spent fuel rod transfer container and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 : single spent fuel rod transfer container, including the transfer structure containing spent fuel rods,

[0043] The transfer structure includes a container structure with an open upper end and a lower end, and a rotating device that drives the container structure to rotate,

[0044] It also includes a hoisting structure located above the transfer structure, the hoisting structure includes a dynamic shielding rod 1, the upper end of the dynamic shielding rod 1 is provided with a connecting end that is connected with the push-pull rod, and the lower end of the dynamic shielding rod is connected with a spent fuel rod. connectors;

[0045] Wherein, the rotating device can drive the rotating body of the container structure, so that the opening axes of the upper end and the lower end of the container structure coincide with the axis of the movable shielding rod 1 .

[0046] As can be seen from the above structure, the spatial relationship of the above str...

Embodiment 2

[0048] Such as figure 1 :

[0049] On the basis of Embodiment 1, specifically, in order to realize the cooperation between the container structure and the rotating device, so that the container structure can complete the rotation under the drive of the rotating device, the present invention borrows the design concept of the valve core, and the shielding valve core 5 and The rotating device is connected, and the drive of the rotating device can freely rotate in the shielding valve core housing 61. Therefore, the container structure includes the shielding valve core 5 and the shielding valve core tube 4 that runs through the shielding valve core and has an open upper end and a lower end. , the shielding spool 5 is covered with a shielding spool housing 61, the shielding spool housing 61 is provided with a bearing hole, and a bearing is arranged in the bearing hole (the symmetrical position of the bearing is provided with a bearing A7), and the bearing seat 64 of the bearing is e...

Embodiment 3

[0056] Such as figure 1 :

[0057] On the basis of Embodiment 1 or Embodiment 2, specifically, preferably, since a good shielding structure needs to be constructed for the moving shielding rod 1, the shielding structure includes an upper sealing head 23 and a lower sealing head 13, and on the upper sealing head 23. The outer shielding cylinder 11 is used to construct a closed space A17 between the lower heads 13, and the closed space A is filled with radiation shielding material (lead-filled), so as to achieve the shielding of the inner pipe 3, and at the same time set the lower head 13 The positioning device has the functions of positioning and shielding.

[0058] Therefore, the present invention preferably also includes: an upper sealing head 23, a lower sealing head 13, a positioning device is arranged above the lower sealing head 13,

[0059] The hoisting structure also includes an inner tube 3 sleeved outside the moving shielding rod 1, and an outer shielding tube 11 is...

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Abstract

The invention discloses a single spent fuel rod transfer container and a using method thereof. The single spent fuel rod transfer container comprises a transfer structure for accommodating spent fuelrods; the transfer structure comprises a container structure with openings in the upper end and the lower end; a rotating device for driving the container structure to rotate; and a lifting structurewhich is positioned above the transfer structure and comprises a movable shielding rod; a connecting end connected and matched with a push-pull rod is arranged at the upper end of the movable shielding rod, and a connecting piece connected and matched with a spent fuel rod is connected to the lower end of the movable shielding rod; the rotating device can drive the container structure to rotate, so that the opening axes of the upper end and the lower end of the container structure coincide with the axis of the movable shielding rod. The above coaxial arrangement is adopted, so that in upward lifting process, spent fuel rods are directly conveyed into the container structure, the loading speed is high, and the radiation exposure time is prevented from being too long.

Description

technical field [0001] The invention relates to the field of reactor fuel rod control, in particular to a transfer container for a single spent fuel rod and a method for using the same. Background technique [0002] For the existing fuel rod transfer container, most of its design ideas are to construct a container bottle in one piece, if a kind of spent nuclear fuel rod tank of the patent publication number CN105359221B contains a submersible pressure vessel. [0003] The core idea of ​​this type of transfer container is to set a shielding shell around it, then open at one end thereof, and set a relatively special sealing cover, so as to shield and transfer nuclear fuel rods. [0004] For the above-mentioned type of transfer container, the transfer method is to use the push-pull rod in the nuclear power plant building to take out the fuel rod from the core, then move it up to a certain height, and then move it horizontally. After the fuel rod reaches the top of the container...

Claims

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Application Information

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IPC IPC(8): G21F5/008G21F5/06
CPCG21F5/008G21F5/06G21F5/065
Inventor 冯艳明吕仙镜王育坤
Owner NUCLEAR POWER INSTITUTE OF CHINA
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