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Sample loading device for high-speed neutron irradiation autorotation

A technology of automatic rotation and fast neutrons, applied in irradiation devices, nuclear engineering, etc., to achieve the effect of simple structure, convenient use and uniform neutron flux

Inactive Publication Date: 2014-01-08
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no automatic rotating sample loading device for fast neutron irradiation to obtain a relatively uniform neutron flux in the horizontal direction

Method used

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  • Sample loading device for high-speed neutron irradiation autorotation
  • Sample loading device for high-speed neutron irradiation autorotation

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Experimental program
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Embodiment Construction

[0019] The size of the cylindrical outer cylinder of the sample loading device of the present invention is the same as that of the reactor's current irradiation cylinder, and is made of pure aluminum. One end of the outer cylinder is a fixed window, and the other end is a rotatable and removable window. The window should ensure sufficient water flow through. The angle of the impeller relative to the shaft is appropriate to ensure that the shaft obtains the maximum rotational torque under the action of the water flow and drives the tank to rotate. The inner tank body in the sample loading device has good sealing performance.

[0020] Further description will be made below in conjunction with the accompanying drawings.

[0021] see figure 1 and figure 2 As shown, the device for automatic rotation of fast neutron irradiation of the present invention is composed of an outer cylinder 1, a bottom cover 2, an upper rotating cover 3, a lower tray 4, an inner tank body 5, a lock 6,...

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Abstract

A sample loading device for high-speed neutron irradiation autorotation comprises an outer cylinder with a detachable end, wherein, a plurality of fan-shaped holes are formed on the upper and the lower end surfaces of the outer cylinder; an inner tank body is arranged in the outer cylinder; the inner tank body is a cylinder with a bottom, and a cover is arranged at the open end of the inner tank body; two ends of the inner tank body are respectively sleeved on an upper rotary cover and a lower tray; the upper rotary cover is supported on the upper end surface of the outer cylinder, whereas, the lower tray is supported at the bottom end of the outer cylinder; an impeller is fixed on the shaft lever of the upper rotary cover; and through support of the upper rotary cover and the lower tray and the rotation of the impeller, the inner tank body can rotate under the action of the water flow of the fan-shaped holes at the two ends of the outer cylinder. Through the invention, the problem that the sample high-speed neutron irradiation is transversely uneven is solved, the processing is simple, the use is convenient, and accordingly, the safe problem of the reactor is avoided; and besides, the sample loading device has no radioactivity after irradiation and can be used repeatedly.

Description

technical field [0001] The invention relates to a neutron irradiation device, in particular to a sample loading device for automatic rotation of fast neutron irradiation. Background technique [0002] Neutron irradiation has many broad applications in many scientific fields. Such as neutron activation analysis, fission track and 40 Ar / 39 Ar dating depends on neutron irradiation. The neutron flux gradient is an important factor affecting the irradiation quality when the sample is irradiated. widely used in earth sciences 40 Ar / 39 Ar dating as an example, the vertical gradient of neutron flux can be determined by the standard material with known age, and a more accurate neutron flux curve can be obtained by encrypting the standard material, and the sample can be placed in the neutron flux The central part of the channel with a small gradient; if the sample maintains a certain rate of rotation during the irradiation process, the horizontal gradient of the neutron flux c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21K5/10
Inventor 杨列坤
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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