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Shaftless rotary gate for nuclear reactor experimental hole shielding

An experimental tunnel, shaftless rotation technology, applied in reactors, shielding, nuclear engineering and other directions, can solve problems such as shaft tilt, difficult rotation, and turntable stuck, and achieve reasonable structure, good shielding effect, and flexible gate rotation.

Active Publication Date: 2007-03-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the shaft becomes relatively short, the shaft is fixed on the turntable by several screws. When there is a relative displacement between the turntables due to manufacturing tolerances and installation accuracy, the shaft is prone to tilt, causing the turntable to get stuck and rotate. relatively difficult

Method used

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  • Shaftless rotary gate for nuclear reactor experimental hole shielding
  • Shaftless rotary gate for nuclear reactor experimental hole shielding

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Experimental program
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Effect test

Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] As shown in Figure 1, the shaftless revolving gate for nuclear reactor experiment channel shielding according to the present invention includes five coaxial rotating discs located in the casing 5, and the five rotating discs are from the outside to the inside, that is, from the direction away from the reactor core. To the direction close to the reactor core (that is to say, the outside is defined as the direction away from the reactor core, and the inside is defined as the direction close to the reactor core), the diameter decreases successively, and each turntable is filled with shielding material, located at The outermost first turntable is driven to rotate by the worm gear mechanism 7, and a through hole 6 is opened at the corresponding eccentric position of each turntable to align and form a channel for leading out rays in the reactor; except for the fifth ...

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Abstract

The present invention is shaftless rotating gate for shielding the experiment channel in nuclear reactor, belongs to the field of nuclear technological application, and aims at raising shielding effect and preventing jamming. The shaftless rotating gate includes five coaxial turntables inside casing, and the five turntables have inwards successively reduced diameters and are filled with shielding material. The first or the outmost turntable is rotated with gear worm mechanism, all the turntables have through holes in the corresponding eccentric position for leading out ray from the reactor after being aligned; all the turntables except the fifth or the inmost one have dialing rod in the position symmetrically to the through hole; and all the turntables except the first one have 60 deg arced slot to match the dialing rod in the next turntable. The gate of the present invention has high shielding effect and flexible rotation.

Description

technical field [0001] The invention relates to a revolving gate mechanism for nuclear reactor experiment tunnel shielding, and belongs to the technical field of nuclear equipment. Background technique [0002] For some experimental reactors, tunnels need to be established to extract neutrons for experimental use. When neutrons are not used, the neutrons of the channel should be shielded. At this time, a gate structure needs to be used to close the channel. [0003] There are two types of turnstiles currently used in experimental reactors, one is a single-axis turnstile and the other is a multi-axis turnstile. The single-axis turnstile is a shaft that penetrates all five turntables. When rotating, the middle shaft drives the five turntables to rotate in sequence. In terms of transmission, there is no problem with such a mechanism. However, since the position of the middle shaft is made of stainless steel instead of shielding material, the position of the shaft cannot shiel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C11/02
CPCY02E30/40Y02E30/30
Inventor 盛选禹吴莘馨何树延于溯源刘俊杰董铎
Owner TSINGHUA UNIV