CN-121978139-A - Protection structure of micro-trace detection CT device and control method thereof

CN121978139ACN 121978139 ACN121978139 ACN 121978139ACN-121978139-A

Abstract

A protection structure of a micro-trace detection CT device and a control method thereof comprise a first cover body, a second cover body, a third cover body, a foundation pit, a lifting mechanism, a base plate, a base, a vibration isolation mechanism and a bearing, wherein the first cover body, the second cover body and the third cover body are sequentially nested in a concentric and coaxial mode, the first cover body is an innermost cover body which is arranged on the base through a vibration isolation mechanism, the base is arranged in the foundation pit and forms a detection space, an X-ray micro-trace detection device is embedded in the detection space, the bottom of the second cover body is rotatably arranged on the base plate through the bearing, the base plate is arranged in the foundation pit through the lifting mechanism, the rotating mechanism can drive the second cover body to rotate, the bottom of the third cover body is fixedly arranged on a plate structure on the foundation pit, the wall thickness of the top wall of the first cover body, the bottom plate, the top wall of the second cover body and the wall of the third cover body are uniform, and the wall thickness of the cylindrical side walls of the first cover body, the second cover body and the third cover body are nonuniform.

Inventors

ZHANG YANG
Zhang Zhuanghan
WANG ZHENSHAN
Kan Yaoyao
ZHANG JINGQIANG

Assignees

山东美汉林智能装备科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260312

Claims (10)

1.A protection structure of a micro-trace detection CT device is characterized by comprising a first cover body, a second cover body, a third cover body, a foundation pit, a lifting mechanism, a base plate, a base, a vibration isolation mechanism and a bearing, wherein the first cover body, the second cover body and the third cover body are sequentially nested in a concentric and coaxial mode, the first cover body is an innermost cover body which is arranged on the base through a vibration isolation mechanism, the base is arranged in the foundation pit, a detection space is formed in the base, an X-ray micro-trace detection device is embedded in the detection space, the second cover body is arranged outside the first cover body, the bottom of the second cover body is rotatably arranged on the base plate through the bearing, the base plate is arranged in the foundation pit through the lifting mechanism, the rotating mechanism is arranged on the base plate and can drive the second cover body to rotate, the third cover body is arranged outside the second cover body, the bottom of the third cover body is fixedly arranged on a plate structure on the foundation pit, the top wall of the first cover body, the bottom wall of the bottom plate, the top wall of the second cover body and the top wall of the third cover body are uniform, and the wall thickness of the first cover body, the top wall of the second cover body and the third cover body and the top wall of a cylinder is nonuniform.
2. The protective structure of the micro-mark detection CT device according to claim 1, wherein the first cover body, the second cover body and the third cover body are of laminated material structures, an innermost layer is a lead material layer which forms a main structure of the cover body, tin material layers are arranged on the inner side and the outer side of the lead material layer, copper material layers are coated on the outer side of the tin material layer, and an aluminum material layer is coated on the outer side of the copper material layer.
3. The protective structure of the micro-mark detection CT apparatus as set forth in claim 2, wherein the wall thickness of the cylindrical side wall of the first cover is smaller from top to bottom, the wall thickness of the second cover is smaller from top to bottom, the wall thickness of the third cover is smaller from top to bottom, a wedge-shaped fitting structure is formed between the outer side of the first cover and the inner side of the second cover, a wedge-shaped fitting structure is formed between the outer side of the second cover and the inner side of the third cover, and the inner side of the first cover and the outer side of the third cover are both vertical cylindrical surfaces.
4. The protective structure of a micro-mark detection CT apparatus as set forth in claim 3, wherein a flow passage for cooling liquid is formed between the copper material layer and the aluminum material layer, a groove I with a semicircular cross section is formed on the outer side of the copper material layer, a groove II with a semicircular cross section is formed on the inner side of the aluminum material layer, and the groove I and the groove II are combined to form the flow passage.
5. The protective structure of the micro-mark detection CT apparatus as set forth in claim 4, wherein the flow passage is divided into a transverse flow passage and a longitudinal flow passage, and the transverse flow passage and the longitudinal flow passage are communicated with each other to form a grid shape and are distributed on the inner and outer side surfaces of the cover body structure.
6. The structure of claim 5, wherein the flow passage on the inner side of the housing is communicated with the flow passage on the outer side of the housing to form a cooling circuit, and a pump is provided on the circuit to pump the cooling liquid in the flow passage from the inner side of the housing to the outer side of the housing.
7. The protective structure of the micro-mark detecting CT apparatus as set forth in claim 6, wherein the second cover is configured to be elevated with respect to the first cover and the third cover, and the second cover has two working positions, a low position and a high position.
8. The protective structure of the micro-mark detecting CT apparatus as claimed in claim 7, wherein the outer side of the first cover contacts the inner side of the second cover when the second cover is in the low position, and the outer side of the second cover contacts the inner side of the third cover.
9. The protective structure of the micro-mark detection CT apparatus as set forth in claim 8, wherein the first cover, the second cover, and the third cover are out of contact with each other when the second cover is in the high position, and have a first gap and a second gap.
10. The method for controlling a shield structure of a micro-mark detection CT apparatus as set forth in claim 9, comprising: In the process of putting the workpiece into or taking out of the protective structure, the micro-mark detection CT device is stopped, the second cover body is lowered by the lifting mechanism to be in a low position, the outer side of the first cover body is contacted with the inner side of the second cover body, and the outer side of the second cover body is contacted with the inner side E of the third cover body; when the micro-mark detection CT device is in a detection working condition, the second cover body is lifted to be in a high position by the lifting mechanism.

Description

Protection structure of micro-trace detection CT device and control method thereof Technical Field The invention belongs to the technical field of trace detection, relates to a trace detection CT device, and particularly relates to a protection device of the trace detection device and a control method thereof. Background In the micro-trace detection CT, the labyrinth type protective equipment has three core technical problems of inconvenient entering, difficult internal heat dissipation and traditional lead layer fluorescence interference, and severely restricts the detection precision and efficiency. In the aspect of convenience in and out, labyrinth protection depends on multiple reflections of channels to realize radiation attenuation, and the longer the channels are, the more the channels are bent, the better the shielding effect is, but the larger the occupied area of equipment is, the material clamping stagnation is easily caused, the beat requirement of modern industry in the order of seconds is difficult to adapt, the simplified channel structure cannot reach the shielding effectiveness of GBZ and 117 standard, and the design contradiction difficult to reconcile is formed. The internal heat dissipation problem is also prominent, the labyrinth type protection is usually designed into a closed structure for guaranteeing the shielding performance, and effective heat dissipation measures are lacked, while the micro-focus X-ray tube (especially the transmission type target) has extremely high power density and obvious local focus temperature, and in addition, the detector and the motor driver continuously generate heat, so that the heat is accumulated continuously. Even though the granite base with better thermal inertia can generate micron-level thermal expansion due to continuous temperature rise, thermal drift is caused, projection data is inconsistent, serious imaging artifacts are generated, and the traditional air cooling needs to be perforated, and radiation and noise leakage risks exist. In addition, the traditional labyrinth protection mostly adopts a single lead layer as a shielding material, and although the main ray beam can be effectively attenuated, when high-energy photons interact with lead atoms, electrons in an inner layer can be excited, and characteristic X-ray fluorescence with energy of about 72-88keV is emitted in the process of annealing. Due to the extremely high sensitivity of the microscratch detection detector, the fluorescence forms 'background fog' on the detector, the signal to noise ratio and the contrast resolution of the image are obviously reduced, and for the detection requirement of searching for weak density differences such as microcracks of carbon fiber composite materials, lithium battery diaphragm defects and the like, the background noise can completely submerge the signals of the tiny defects, and the detection accuracy is affected. Therefore, it is necessary to design a protection structure of a micro-trace detection CT apparatus and a control method thereof to solve the problems in the prior art. Disclosure of Invention The invention aims to provide a protection structure of a micro-trace detection CT device and a control method thereof, which are used for solving the technical problems in the prior art. The invention adopts the following technical scheme to realize the aim: On one hand, the protection structure of the micro-trace detection CT device comprises a first cover body, a second cover body, a third cover body, a foundation pit, a lifting mechanism, a base plate, a base, a vibration isolation mechanism and a bearing, wherein the first cover body, the second cover body and the third cover body are sequentially nested in a concentric and coaxial mode, the first cover body is an innermost cover body which is arranged on the base through a vibration isolation mechanism, the base is arranged in the foundation pit, a detection space is formed in the base, an X-ray micro-trace detection device is embedded in the detection space, the second cover body is arranged outside the first cover body, the bottom of the second cover body is rotatably arranged on the base plate through the bearing, the base plate is arranged in the foundation pit through the lifting mechanism, the rotating mechanism is arranged on the base plate and can drive the second cover body to rotate, the third cover body is arranged outside the second cover body, the bottom of the third cover body is fixedly arranged on a plate structure on the foundation pit, the top wall of the first cover body, the bottom wall of the bottom of the second cover body, the top wall of the third cover body is uniform, the wall thickness of the first cover body, the second cover body and the side wall of the third cover body is the cylinder is nonuniform. Preferably, the first cover body, the second cover body and the third cover body are of laminated material structures, the innermost layer is a lead material la