TWI504887B - X - ray tomography - Google Patents

Description

X-ray tomography device

The present invention relates to an X-ray tomography apparatus, and more particularly to a device for performing radiation detection to make a measured object movable, and the conventional radiation detecting apparatus has a tomographic scanning effect.

Conventional, non-destructive inspection techniques to implement structural defects are widely used in the industry, inspection, metal welding inspection, and internal inspection of plastic parts in the aerospace industry, automobile industry, power plants, petrochemical industry, foundry, etc. Radiation detection technology, X-ray machine detection is also one. In general, high-quality X-ray photos help to determine structural defects. Conversely, poor quality X-rays are more likely to be misinterpreted by the naked eye, leading to subsequent processes or application risks.

According to the X-ray imaging method, X-rays that have passed through the object to be tested are used to form an image by the imaging device. The conventional X-ray irradiation method is a static irradiation method, and the image forming device is mainly composed of a chemical film composed of a chemical substance. When the X-ray passes through the object to be tested, the X-ray is hit on the photosensitive film to convert energy to the chemical substance, resulting in a negative film. The image is exposed and exposed, so the X-ray machine, the object to be tested and the film must be fixed on the same line. However, the more detailed the X-ray photograph of the structure of the object to be measured, the higher the image quality, and the X-ray image cannot be accurately determined because the X-ray image cannot be accurately determined.

In addition, after the X-ray enters the measured object, the following occurs, the X-ray is absorbed, scattered or penetrated, and the physical phenomenon affects the result of the film imaging, so when the thickness of the measured object is different or has a nick In the case of the metal material, the image quality obtained is poor and the noise is large, and the reduction of the X-ray photo noise to improve the X-ray image quality is the main problem to be solved by the present invention.

The noise in the X-ray photograph refers to the imaging of the structure of the undetected object in the image, and usually the image of the object is imaged with distortion and blur. Elephant. All the objects in the X-ray image are larger than the real object, and even the same object has different shapes. This phenomenon is called distortion. Generally speaking, the distortion factor has the thickness and position of the object to be tested. The thicker the measured object, the stronger the ability to absorb X-rays, and the thicker objects are more likely to be distorted. In addition, the object to be measured is parallel to the imaging plane, the shape of the object itself is irregular, or the imaging area is located. Distortion occurs on the center axis of the X-ray source. In addition, since the X-ray emitted by the X-ray tube is a cone beam, there is a phenomenon that the edge is blurred when imaging.

In view of the above-mentioned shortcomings of the prior art, the present invention uses an activity unit to link the object unit on which the object to be tested is placed and the image forming unit that generates the image after being irradiated by the object to be irradiated, so that the object to be measured is dynamic in the radiation source. Illumination imaging achieves the goal of reducing noise.

In order to achieve the effect of the X-ray tomography, the radiation mechanism continuously illuminates when the object to be tested moves, and the radiation, the position of the object to be measured on a cross section of the object and the corresponding position of the imaging unit must be kept in the same straight line, and the present invention provides a The X-ray tomography apparatus is configured to make the imaging unit and the storage unit interlock by the movable unit, and the imaging position on the film of the imaging unit is unchanged. When the object is reciprocated to perform the radiation scanning, only the image of the section of the radiation focus is clear. The characteristics of the remaining positions are blurred, and it is judged whether the object to be tested is defective.

In order to achieve the above object, the present invention provides an X-ray tomography apparatus, which comprises: a susceptor; a device to be tested, which is placed on one side of the pedestal, and includes an imaging unit, a storage unit and an active unit, wherein The imaging unit is movably disposed on one side of the storage unit, the movable unit is movably disposed on the same side of the storage unit to reciprocate the storage unit and the imaging unit, and a radiation mechanism for emitting radiation to illuminate the mechanism to be tested The other side of the storage unit.

In one embodiment of the X-ray tomography apparatus, the active unit of the mechanism to be tested includes at least one of a connecting rod and a power element. The connecting rod is used to connect the imaging unit and the storage unit of the mechanism to be tested. Further connecting the connecting rod with the radiation mechanism, so that the mechanism to be tested is placed on the radiation mechanism Within the range of radiation.

In another embodiment of the X-ray tomography apparatus, the imaging unit and the storage unit of the device to be tested are further provided with a sliding element, which can be slid on the base, and the sliding element can be a roller, a groove, a slide rail or The combination unit, wherein the movable unit can be provided with a chain for driving the imaging unit and the storage unit of the mechanism to be tested. The base can further be provided with a track for the imaging unit and the storage unit of the mechanism to be tested to slide thereon, so that the mechanism to be tested is more smoothly reciprocated during the dynamic illumination process.

Another object of the present invention is to provide an X-ray tomography apparatus which can be used in various metal casings, in which a workpiece having a filler is subjected to a radiation tomography detecting apparatus.

The above summary, the following detailed description and the accompanying drawings are intended to further illustrate the manner, the Other objects and advantages of the present invention will be described in the following description and drawings.

The embodiments of the present invention are described below by way of specific examples, and those skilled in the art can readily appreciate the other advantages and advantages of the present invention.

Referring to FIG. 2, a partial front view of an embodiment of an X-ray tomography apparatus according to the present invention includes: a base (200); and a mechanism to be tested (300) including an imaging unit (310). a storage unit (320) and an activity unit (330), the activity unit (330) comprising at least one link (331) and a power component (332), the imaging unit (310) connecting the mechanism (300) to be tested And the storage unit (320) to cause the imaging unit (310) to be linked with the storage unit (320); and a radiation mechanism (400) for emitting radiation to illuminate the storage unit of the device (300) to be tested (320) The other side. The sliding elements (311, 321) of the imaging unit (310) and the storage unit (320) are slidable on the base (200), and the sliding elements (311, 321) are rollers, grooves, and slides. Track or a combination thereof.

Referring to FIG. 3, a side view of a portion of an X-ray tomography apparatus according to the present invention is shown. The connecting rod (331) of the movable unit is further pivotally connected to the radiation mechanism (400) to make the mechanism to be tested ( 300) Within the radiation exposure range of the radiation mechanism (400).

Embodiment 1:

As shown in FIG. 4, a schematic side view of a first embodiment of an X-ray tomography apparatus according to the present invention includes: a pedestal (200) is provided with at least one or more tracks for the imaging unit (310) and the storage device. The unit (320) slides thereon; a mechanism to be tested (300) includes an imaging unit (310), a storage unit (320) and an active unit (330); the active unit (330) includes at least one of a rod (331) coupled to the imaging unit (310) of the device (300) to be tested and the storage unit (320) to cause the imaging unit (310) to be linked with the storage unit (320), the active unit (330) Further, a power component (332) is provided for reciprocatingly driving the mechanism (300) to be tested, the movable unit (330), and a radiation mechanism (400) emitting radiation on one side of the storage unit (320). The sliding unit (311, 321) of the imaging unit (310) and the storage unit (320) can slide on the base (200). The power element (332) can be a motor, hydraulic, pneumatic or a combination thereof.

Embodiment 2:

An X-ray tomography apparatus comprising: a radiation mechanism (400) having a fixed downward radiation head emitting X-rays; and a connecting rod (331) having a top end pivotally coupled to the radiation mechanism (400) a sliding slot is defined as a limiting slot at the bottom; an imaging unit (310) is a placement seat of the negative film, and has a limiting component on both sides thereof, and the pair of limiting slots are adjacent to the connecting rod (331); a group of imaging units ( 310) the sliding element, providing the imaging unit (310) to slide on the base (200); a chain (333) fixed to the front and rear ends of the imaging unit (310) to form a closed loop with the imaging unit (310) When the power component (332) drives the chain (333), the chain (333) can drive the imaging unit (310) to slide forward or backward on the base (200); a storage unit (320), There is a groove on it to provide the object to be tested, and there are limits on both sides. The component is adjacent to the connecting rod (331) by a pair of limiting slots; a set of sprocket mounted on the base (200) for changing the direction in which the chain (333) is disposed. The operation process continuously irradiates the object to be tested by X-ray. During the illumination, the power element (332) drives the chain (333), and the chain (333) pulls the sliding of the imaging unit (310), when the imaging unit (320) slides, The limiting member on both sides and the connecting rod (331) are adjacent to the pair of limiting slots to drive the swing of the connecting rod (331); when the connecting rod (331) is swung, the limiting slot and the storage unit (320) are also limited. The pair of slots abut, and the storage unit (320) moves with the link (331).

The above-described embodiments are merely illustrative of the features and functions of the present invention and are not intended to limit the scope of the technical scope of the present invention. Modifications and variations of the above-described embodiments can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be as set forth in the scope of the claims described below.

110‧‧‧X-ray machine

120‧‧‧Store unit

130‧‧‧ imaging unit

140‧‧‧Test object

200‧‧‧Base

300‧‧‧ institutions to be tested

310‧‧‧ imaging unit

311‧‧‧Sliding components

320‧‧‧Store unit

321‧‧‧Sliding components

330‧‧‧ activity unit

331‧‧‧ Connecting rod

332‧‧‧Power components

333‧‧‧Chain

400‧‧‧radiation agencies

Figure 1 is a schematic diagram of conventional X-ray illumination

Figure 2 is a front elevational view of a portion of the embodiment of the present invention

Figure 3 is a side elevational view of a portion of the embodiment of the present invention

Figure 4 is a side view of the first embodiment of the present invention

200‧‧‧Base

300‧‧‧ institutions to be tested

310‧‧‧ imaging unit

320‧‧‧Store unit

330‧‧‧ activity unit

331‧‧‧ Connecting rod

332‧‧‧Power components

333‧‧‧Chain

400‧‧‧radiation agencies

Claims (10)

An X-ray tomography apparatus, which has a tomographic effect on a conventional radiation detecting device, the device comprising: a pedestal; a device to be tested, which is placed on one side of the pedestal, and includes an imaging unit, a storage unit and an active unit The imaging unit is movably disposed on one side of the storage unit, the movable unit is movably disposed on the same side of the storage unit, so that the storage unit and the imaging unit reciprocate simultaneously; and a radiation mechanism having a fixed downward direction The X-ray emits X-rays to illuminate the other side of the object storage unit of the device to be tested; wherein the X-ray tomography device causes the imaging unit to be linked with the storage unit by the movable unit, and the imaging position on the film of the imaging unit is unchanged. When the object to be tested reciprocates and performs radiation scanning, only the image of the section of the radiation focus is clear, and the remaining positions are blurred, so that the film of the imaging unit forms a tomographic image to determine whether the object to be tested is defective. The X-ray tomography apparatus of claim 1, wherein the movable unit of the mechanism to be tested comprises at least one of a connecting rod and a power element. The X-ray tomography apparatus of claim 1, wherein the linkage of the movable unit is used to connect the imaging unit and the storage unit of the mechanism to be tested. The X-ray tomography apparatus of claim 1 or 3, wherein the imaging unit and the storage unit of the mechanism to be tested further comprise at least one or more sliding elements that are slidable by the base. The X-ray tomography apparatus of claim 4, wherein the imaging unit of the mechanism to be tested and the sliding element of the storage unit are rollers, grooves, slide rails or a combination thereof. The X-ray tomography apparatus of claim 2, wherein the power element of the movable unit comprises a power unit of a motor, a hydraulic pressure, a pneumatic pressure or a combination thereof. The X-ray tomography apparatus of claim 1, wherein the movable unit is further provided with a chain for driving the imaging unit and the storage unit of the mechanism to be tested. The X-ray tomography apparatus of claim 5, wherein the base further comprises at least one track on which the imaging unit and the storage unit of the mechanism to be tested slide. The X-ray tomography apparatus of claim 3, wherein the link is further pivotally coupled to the radiation mechanism such that the mechanism to be tested is within a radiation exposure range of the radiation mechanism. The X-ray tomography apparatus of claim 1, wherein the storage unit of the mechanism to be tested comprises a groove, a positioning member or a combination thereof.