Backscattering type X-ray scanner

An X-ray and scanner technology, applied in the field of anti-scattering ray scanning detection devices, can solve the problems of large X-ray beam volume, difficult manufacturing and processing, complex shielding requirements, etc., and achieve low energy, small human damage, and simple equipment Effect

Inactive Publication Date: 2004-03-31
PURPLE SQUARE TECH
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Problems solved by technology

Chinese patent application "Multifunctional Industrial X-ray Imaging System" (Application No. 99113199) adopts the disk-mounted flying spot scanning technology, which is to process a specific specially designed slit on a rotating disk, to be connected with another slit with the slit The relative movement of the fixed plate can ensure the continuous and uniform scanning of the generated rod-shaped X-ray beam, which is a complex and difficult task
Therefore cause complicated equipment, make and process difficulty; Plus must draw out a conical beam from X-ray tube place and shoot on the plate, just can draw out a rod-shaped X-ray beam from the other side of fixed plate, the amount of X-ray beam drawn like this Larger, more opportunities to generate stray X-rays, and more complex shielding requirements

Method used

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the present invention will be further described:

[0015] The anti-scatter X-ray scanner provided by the present invention mainly includes an X-ray source, a flying spot beam generator 9 , a sector collimator 2 , a detector 8 and a sensor 17 . The X-ray source consists of an X-ray tube 1, a high-voltage power supply 15 and a cable 16, which are placed in the drum 9 together with the fan-shaped collimator 2. There are 1 to 4 square or circular small holes 10 on the same circumference of the drum 9. The size of the small holes is generally between 1 and 5 mm, and a lead plate of about 3 mm is inlaid on the inside of the drum as a shield. Floor. Its working principle is: the cylinder 9 winds around the X-ray tube 1, the fan-shaped collimator 2 performs a circular motion, and the small hole 10 also performs the same motion to generate a rod-shaped beam 11, and the rod-shaped beam hits the cylinder that is relatively linearly ...

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Abstract

A backscattering type flying dots radioactive ray scanning checkout apparatus, wherein a rotatable drum shape straight line flying-spot scanning arrangement is used, 1-4 circular or square holes are arranged uniformly on the same circumference of the drum, its inner side is inlaid with lead or heavy metallic shielding layer, an X-ray source and fan-shaped collimating device are all arranged in the drum, and a special detector is employed. The advantages of the installation are little scattering radiation, less damage to human body, simplified structure and easy fabrication process.

Description

technical field [0001] The invention relates to an anti-scattering type ray scanning detection device, in particular to an anti-scattering type X-ray scanner, which belongs to the technical field of social security inspection and safety precaution measurement equipment. Background technique [0002] The anti-scatter ray scanner is a device that uses the information of the back-scattered ray on the object for measurement and processing, and then calculates the image and information of the internal material distribution on the surface of the detected object. The device can provide protection for the social security of airports, stations, various buildings, halls, halls and institutes. The radiation source of this kind of device can adopt isotope or X-ray. When scanning, some use flat beam scanning, and some use flying spot scanning. It works as figure 1 As shown: the rays emitted by the ray tube 1 are collimated by the front collimator 2 into a flat fan-shaped incident beam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/203
Inventor 貊大卫王永庆张力生吴利存
Owner PURPLE SQUARE TECH
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