CN117434091A - Nondestructive testing method for gas storage bottle with two open ends - Google Patents
Nondestructive testing method for gas storage bottle with two open ends Download PDFInfo
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- CN117434091A CN117434091A CN202311445723.8A CN202311445723A CN117434091A CN 117434091 A CN117434091 A CN 117434091A CN 202311445723 A CN202311445723 A CN 202311445723A CN 117434091 A CN117434091 A CN 117434091A
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- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 19
- 206010070834 Sensitisation Diseases 0.000 claims abstract description 25
- 230000008313 sensitization Effects 0.000 claims abstract description 25
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 238000010191 image analysis Methods 0.000 claims abstract description 7
- 238000007499 fusion processing Methods 0.000 claims abstract description 6
- 238000013519 translation Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention discloses a nondestructive testing method for a gas cylinder with two open ends, which belongs to the technical field of metal nondestructive testing and comprises the following steps of S1: clamping the gas storage bottles with two open ends on a nondestructive testing device; s2: the threaded rod of the nondestructive testing device penetrates through openings at two ends of the gas storage bottle, the transmitting device moves along the axis of the threaded rod for a plurality of times, and the moving distance of each time is set as S, wherein S is smaller than the length of the gas storage bottle; stopping for a period of time after each time the transmitting device moves, wherein the time interval is set to be t, and the transmitting device transmits X-rays once to pass through the side wall of the gas storage bottle and sensitization is carried out on the sensitization plate within the time t; the transmitting device moves from the outer side of one end of the gas storage bottle to the outer side of the other end of the gas storage bottle through the inner part of the gas storage bottle; s3: and (3) using an image analysis technology to analyze the shape and the position of the crack after the crack is subjected to image fusion processing on the shape and the position of the crack after the light sensing plate senses light for many times, and analyzing the shape and the position of the crack in the gas storage bottle. The detection scheme can detect cracks of the gas storage bottle without rotating the transmitting device.
Description
Technical Field
The invention belongs to the technical field of metal nondestructive testing, and particularly relates to a nondestructive testing method for a gas cylinder with two open ends.
Background
The X-ray nondestructive test is a test method for judging the internal defect condition of a material by utilizing the fact that X-rays can penetrate through the metal material and the film is sensitive differently due to the difference of the absorption and scattering actions of the material on the rays, so that images with different blackness are formed on the film.
The authorized bulletin number CN210834712U discloses a nondestructive testing device for an X-ray steel tube, which comprises a table body, a first lifting mechanism, a second lifting mechanism, a rotating mechanism and a ray tube for emitting rays. In the device, the lifting mechanism I and the lifting mechanism II jointly bring the rotating mechanism and the ray tube into the tube body, and the ray tube is rotated by a certain angle by utilizing the rotating mechanism to carry out nondestructive testing.
In the detection device of this patent, the rotation mechanism is required to rotate the radiation tube by an angle so that the X-rays can pass through all positions of the object to be detected. The above patent is mainly directed to a test object such as a "steel tube" whose both end opening diameters are equal to the diameters of its circumferential portions, so that the rotation of the tube along the axis of the steel tube is not limited at all.
The existing gas storage bottle with two open ends is characterized in that the two open ends are respectively controlled to be opened and closed through two valves. For this cylinder, the diameter of the openings at both ends is smaller than the diameter of the cylinder body. Due to the reduced diameter, the tube cannot be rotated normally at the opening position, so that the X-rays emitted by the tube cannot fully penetrate the gas cylinder and are received by the photosensitive plate.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a nondestructive testing method for a gas cylinder with two open ends, which aims to solve the technical problem of how to realize the comprehensive nondestructive testing of the gas cylinder with two open ends without rotating a ray tube.
In order to achieve the above object, a nondestructive inspection method for a gas cylinder with both ends open of the present invention comprises S1: clamping the gas storage bottles with two open ends on a nondestructive testing device; s2: the threaded rod of the nondestructive testing device penetrates through openings at two ends of the gas storage bottle, the transmitting device moves along the axis of the threaded rod for a plurality of times, and the moving distance of each time is set as S, wherein S is smaller than the length of the gas storage bottle; stopping for a period of time after each time the transmitting device moves, wherein the time interval is set to be t, and the transmitting device transmits X-rays once to pass through the side wall of the gas storage bottle and sensitization is carried out on the sensitization plate within the time t; the transmitting device moves from the outer side of one end of the gas storage bottle to the outer side of the other end of the gas storage bottle through the inner part of the gas storage bottle; s3: and (3) using an image analysis technology to analyze the shape and the position of the crack after the crack is subjected to image fusion processing on the shape and the position of the crack after the light sensing plate senses light for many times, and analyzing the shape and the position of the crack in the gas storage bottle.
Further, the nondestructive testing device includes: the device comprises a horizontal transverse plate, wherein a vertical plate is fixed on the transverse plate, a mounting plate is fixed on the vertical plate, and the mounting plate is positioned above the transverse plate; the photosensitive plate is cylindrical; the photosensitive plate is positioned between the mounting plate and the transverse plate; the photosensitive plate is sleeved on the gas storage bottle, the axis of the photosensitive plate is parallel to the axis of the gas storage bottle, and the inner wall of the photosensitive plate is not contacted with the outer wall of the gas storage bottle; a guide rod is fixed on the vertical plate, the guide rod penetrates through openings at two ends of the gas storage bottle, the axis of the guide rod is parallel to the axis of the gas storage bottle, and the photosensitive plate is not contacted with the guide rod; the guide rod is sleeved with a translation block, and the translation block can slide along the axis of the guide rod; the translation block is in threaded connection with the threaded rod; the threaded rod is rotationally connected to the vertical plate; the transmitting device is fixed on the translation block; the mounting plate is provided with a clamping mechanism for limiting the gas storage bottle.
Further, the clamping mechanism comprises a limiting plate fixed on the vertical plate, and the limiting plate is abutted against one end part of the gas storage bottle along the axial direction; the mounting plate is provided with a clamping block, the upper end of the clamping block is hinged on the mounting plate through a first shaft, and the lower end of the clamping block is a free end; the mounting plate is provided with an air cylinder, the cylinder body of the air cylinder is hinged on the mounting plate through a shaft three, and the piston rod of the air cylinder is hinged at the middle position of the clamping block through a shaft two; under the action of the air cylinder, the clamping block is abutted against the end part of the other end of the air storage bottle.
The clamping mechanism provides supporting force for the gas storage bottle, and then the gas storage bottle is suspended; the gas storage bottle is not contacted with the photosensitive plate, so that the gas storage bottle can not move in the nondestructive testing process. The deviation of the photosensitive image on the photosensitive plate can not be caused by the random movement of the gas storage bottle.
Further, the upper surface wall of the transverse plate is fixedly connected with a support, and the support is fixedly connected with the outer wall of the lower end of the photosensitive plate.
The lower extreme of sensitization board is supported by the support, even is not connected between support and the lever sensitization board, and the support also can rely on its holding power, bears the sensitization board, with support and sensitization board fixed connection, has further guaranteed the connection fastness of sensitization board.
Further, the right end surface wall of the vertical plate does not collide with the left end surface wall of the gas storage bottle.
When the transmitting device approaches to the left end of the gas storage bottle, the transmitting device can sense light at the right end of the light sensing plate based on the fact that light linearly propagates. The right end is sensitive and has the advantage of being far away from the vertical plate and easier to observe.
Further, the length of the photosensitive plate along the axis is greater than the length of the gas cylinder along the axis.
The photosensitive plate is designed to be longer, so that no matter where the gas storage bottle is, the crack on the gas storage bottle can be ensured to be sensitized on the photosensitive plate. If the length of the photosensitive plate is designed to be shorter, a dead zone may occur, so that the gas cylinder is left with the dead zone without monitoring.
Advantageous effects
1. The detection method is provided with a cylindrical photosensitive plate which is sleeved outside the gas storage bottle. The translation block and the transmitting device translate in the gas storage bottle, the transmitting device transmits X-rays to pass through the gas storage bottle and is received by the photosensitive plate, if the gas storage bottle is cracked, a clear bright area is displayed on the photosensitive plate, and the X-rays can be observed only by naked eyes. The shape and position of the crack after the sensitization of the sensitization plate for many times can be subjected to image fusion processing by utilizing an image analysis technology, and the shape and the position of the crack in the gas storage bottle can be analyzed.
2. The method does not need to rotate the transmitting device in a narrow space of the bottle mouth of the gas storage bottle, and the cylindrical photosensitive plate is utilized to comprehensively receive X rays. Compared with the authorized bulletin number CN210834712U, the nondestructive testing device for the X-ray steel tube is more suitable for nondestructive testing of gas cylinders with two open ends because the nondestructive testing device does not need to rotate at a narrow opening.
Drawings
FIG. 1 is a schematic view of the structure of a nondestructive testing device of the method after cutting a photosensitive plate;
fig. 2 is a flow chart of the present method.
1. A cross plate; 2. a riser; 3. a mounting plate; 4. a support; 5. a photosensitive plate; 6. a limiting plate; 7. a clamping block; 8. a first shaft; 9. a cylinder; 10. a second shaft; 11. an axle III; 12. a threaded rod; 13. a translation block; 14. a transmitting device; 15. and a motor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, a nondestructive testing method for a gas cylinder with two open ends, comprises the steps of:
s1: clamping the gas storage bottles with two open ends on a nondestructive testing device;
s2: the threaded rod of the nondestructive testing device penetrates through openings at two ends of the gas storage bottle, the transmitting device moves along the axis of the threaded rod for a plurality of times, and the moving distance of each time is set as S, wherein S is smaller than the length of the gas storage bottle; stopping for a period of time after each time the transmitting device moves, wherein the time interval is set to be t, and the transmitting device transmits X-rays once to pass through the side wall of the gas storage bottle and sensitization is carried out on the sensitization plate within the time t; the transmitting device moves from the outer side of one end of the gas storage bottle to the outer side of the other end of the gas storage bottle through the inner part of the gas storage bottle;
s3: and (3) using an image analysis technology to analyze the shape and the position of the crack after the crack is subjected to image fusion processing on the shape and the position of the crack after the light sensing plate senses light for many times, and analyzing the shape and the position of the crack in the gas storage bottle.
The image analysis technology is the prior art, for example, an intelligent detection method of X-ray nondestructive detection disclosed in application publication number CN114119475A can be adopted.
In step S1, a nondestructive inspection apparatus includes a horizontally placed cross plate 1. The vertical plate 2 is fixed on the transverse plate 1, and the vertical plate 2 is vertically arranged and is positioned at the left end of the transverse plate 1. The upper end level of riser 2 is provided with mounting panel 3, and the left end and the riser 2 fixed connection of mounting panel 3. The cross plate 1, the riser 2 and the mounting plate 3 are generally in the shape of "" from the perspective of fig. 1.
A support 4 is fixed on the upper part of the transverse plate 1. The upper surface wall of the support 4 is fixed with a photosensitive plate 5, the photosensitive plate 5 is cylindrical, the axis is along the left-right direction, and the photosensitive plate 5 is positioned between the mounting plate 3 and the transverse plate 1; the support 4 is fixed on the circumferential outer wall of the photosensitive plate 5 and above the support 4. The sensitization board 5 cover is established on the open-ended gas bomb in both ends, and the outer wall of gas bomb is contactless with the inner wall of sensitization board 5, and the axis of gas bomb is parallel with the axis of sensitization board 5, and the length of sensitization board 5 along its axis direction is almost equal with the distance of gas bomb along sensitization board 5 axis, and the length of gas bomb along sensitization board 5 axis direction is slightly less than sensitization board 5. The photosensitive web 5 is a phosphor screen.
The right surface wall of the vertical plate 2 is fixed with a limiting plate 6, and the left end surface wall of the gas storage bottle is abutted against the right surface wall of the limiting plate 6. The lower surface wall of the limiting plate 6 is also provided with a clamping mechanism for limiting the gas storage bottle, and the clamping mechanism is positioned on the right side of the photosensitive plate 5.
The clamping mechanism comprises a clamping block 7, the upper end of the clamping block 7 is hinged to the lower surface wall of the mounting plate 3 through a shaft I8, and the lower end of the clamping block 7 is a free end. Also included is a cylinder 9, the cylinder 9 being to the right of the clamping block 7. The cylinder body of the air cylinder 9 is hinged to the lower surface wall of the mounting plate 3 through a second shaft 11, a piston rod of the air cylinder 9 is positioned at the lower end of the cylinder body of the air cylinder 9, and the piston rod of the air cylinder 9 is hinged to the middle position of the clamping block 7 through a third shaft 10. The axes of the first shaft 8, the second shaft 10 and the third shaft 11 are perpendicular to the paper surface of fig. 1.
The clamping block 7 can rotate along the first shaft 8 through the expansion and contraction of the piston rod of the air cylinder 9, so that the clamping block 7 is abutted against the right end surface wall of the air storage bottle, and the air storage bottle is in a suspended state and is not in contact with the inner wall of the photosensitive plate 5. The clamping block 7 applies leftward thrust to the gas bomb, and the left end of the gas bomb abuts against and compresses the limiting plate 6, so that the gas bomb is limited under the action of the clamping block 7 and the limiting plate 6.
The nondestructive testing device further comprises a threaded rod 12, the axis of the threaded rod 12 is arranged in the left-right direction, the left end of the threaded rod 12 is rotationally connected to the vertical plate 2, the photosensitive plate 5 is sleeved on the gas storage bottle, the threaded rod 12 penetrates through openings at two ends of the gas storage bottle, the axis of the threaded rod 12 is parallel to the axis of the photosensitive plate 5, and the photosensitive plate 5 is not in contact with the threaded rod 12. A motor 15 for driving the threaded rod 12 to rotate is fixed on the vertical plate 2, and a rotating shaft of the motor 15 is coaxially connected with the threaded rod 12. The threaded rod 12 is inserted through openings at the left and right ends of the gas cylinder in the left and right directions.
A guide rod (not shown) is also fixed on the vertical plate 2, the axis of the guide rod is parallel to the axis of the threaded rod 12, the guide rod also penetrates through the openings at the two ends of the gas storage bottle, the guide rod is parallel to the threaded rod 12, and the photosensitive plate 5 is not contacted with the guide rod.
The non-destructive inspection apparatus further comprises a translation block 13. The threaded rod 12 is arranged on the translation block 13 in a penetrating way, and the threaded rod 12 is in threaded connection with the translation block 13. The guide rod is also arranged on the translation block 13 in a penetrating way, and the translation block 13 can slide along the axis of the guide rod. The translation block 13 is fixed with a transmitting device 14 for transmitting X-rays, and the transmitting device 14 can adopt an authorized bulletin number CN210834712U to disclose a ray tube mentioned by an X-ray steel tube nondestructive testing device. The emitting device 14 is located to the left of the translation block 13, in order that the X-rays emitted downwards by the emitting device 4 are not blocked by the translation block 13. The right end surface of the riser 2 does not interfere with the left end surface of the gas cylinder in order to move the launcher 14 as far to the left as possible, so that the left end of the gas cylinder is imaged on the photoreceptor plate as close to the right end of the photoreceptor plate as possible.
The using process of the nondestructive testing device is as follows:
the gas cylinder is stretched into the photosensitive plate 5 from the right end of the photosensitive plate 5 along the axis of the photosensitive plate by a mechanical arm, the cylinder 9 is in a shortened state in the process, and the clamping block 7 does not obstruct the movement of the gas cylinder; after the left end of the gas storage bottle contacts with the limiting plate 6, the gas cylinder 9 stretches and abuts against the gas storage bottle (the gas cylinder 9 keeps in a abutting state after continuous ventilation, the gas storage bottle is prevented from falling), and the manipulator leaves the gas storage bottle.
Under the action of the motor 15, the translation block 13 is driven by the threaded rod 12 to translate along the axis of the guide rod, after a preset distance is moved, the distance is set to S, the translation block 13 stops moving, and the X-rays emitted by the emitting device 14 pass through the gas storage bottle and are received by the photosensitive plate 5 within the duration of t time. The translation block is then moved a further distance (in this example, the S length is 5 cm) and the X-rays re-emitted by the emitting device 14 pass through the notch in the cylinder and are received by the plate 5. According to the intelligent detection method for X-ray nondestructive detection disclosed in application publication No. CN114119475A, the information of whether the gas storage bottle has a crack defect or not can be obtained by analyzing the image of multiple imaging on the photosensitive plate 5. After the single gas cylinder is detected, the gas cylinder is taken down again by the manipulator.
Compared with the bulletin No. CN210834712U, the device discloses a nondestructive testing device for an X-ray steel tube, the transmitting device 14 does not need to rotate, and the transmitted X-rays are directly received through the cylindrical photosensitive plate 5. In the case of a narrow opening, no non-destructive detection is possible due to the rotation of the transmitting device.
The principle of identifying whether the side wall of the gas storage bottle is provided with a notch is as follows: the emitted X-rays irradiate the gas storage bottle, if the gas storage bottle has cracks, the X-rays can penetrate the cracks and are sensitized on the sensitization plate 5, namely, sensitization areas (which are obviously shiny compared with other areas and can be observed by naked eyes) appear on the sensitization plate, and the cracks exist. Since the emitting device 14 is constantly moving, the shape of the same crack defect on the photosensitive web will change accordingly due to the different relative positions of the crack and the generating device 14. And (3) using an image analysis technology to analyze the shape and the position of the crack after the crack is subjected to image fusion processing on the shape and the position of the crack after the light sensing plate senses light for many times, and analyzing the shape and the position of the crack in the gas storage bottle.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. A method for non-destructive testing of a gas cylinder having two open ends, comprising the steps of:
s1: clamping the gas storage bottles with two open ends on a nondestructive testing device;
s2: the threaded rod of the nondestructive testing device penetrates through openings at two ends of the gas storage bottle, the transmitting device moves along the axis of the threaded rod for a plurality of times, and the moving distance of each time is set as S, wherein S is smaller than the length of the gas storage bottle; stopping for a period of time after each time the transmitting device moves, wherein the time interval is set to be t, and the transmitting device transmits X-rays once to pass through the side wall of the gas storage bottle and sensitization is carried out on the sensitization plate within the time t; the transmitting device moves from the outer side of one end of the gas storage bottle to the outer side of the other end of the gas storage bottle through the inner part of the gas storage bottle;
s3: and (3) using an image analysis technology to analyze the shape and the position of the crack after the crack is subjected to image fusion processing on the shape and the position of the crack after the light sensing plate senses light for many times, and analyzing the shape and the position of the crack in the gas storage bottle.
2. A nondestructive inspection method for a gas cylinder with two open ends according to claim 1, wherein the nondestructive inspection apparatus comprises:
the horizontal plate is horizontally arranged, a vertical plate is fixed on the horizontal plate, and a mounting plate is fixed on the vertical plate and is positioned above the horizontal plate;
the photosensitive plate is cylindrical; the photosensitive plate is positioned between the mounting plate and the transverse plate; the photosensitive plate is sleeved on the gas storage bottle, the axis of the photosensitive plate is parallel to the axis of the gas storage bottle, and the inner wall of the photosensitive plate is not contacted with the outer wall of the gas storage bottle;
a guide rod is fixed on the vertical plate, the guide rod penetrates through openings at two ends of the gas storage bottle, the axis of the guide rod is parallel to the axis of the gas storage bottle, and the photosensitive plate is not contacted with the guide rod; the guide rod is sleeved with a translation block, and the translation block can slide along the axis of the guide rod; the translation block is in threaded connection with the threaded rod;
the threaded rod is rotationally connected to the vertical plate; the transmitting device is fixed on the translation block; the mounting plate is provided with a clamping mechanism for limiting the gas storage bottle.
3. The nondestructive testing method for a gas cylinder with two open ends according to claim 2, wherein the clamping mechanism comprises a limiting plate fixed on a vertical plate, the limiting plate abutting against one end of the gas cylinder in the axial direction; the mounting plate is provided with a clamping block, the upper end of the clamping block is hinged on the mounting plate through a first shaft, and the lower end of the clamping block is a free end; the mounting plate is provided with an air cylinder, the cylinder body of the air cylinder is hinged on the mounting plate through a shaft three, and the piston rod of the air cylinder is hinged at the middle position of the clamping block through a shaft two; under the action of the air cylinder, the clamping block is abutted against the end part of the other end of the air storage bottle.
4. The nondestructive testing method for a gas cylinder with two open ends according to claim 2, wherein the upper surface wall of the transverse plate is fixedly connected with a support, and the support is fixedly connected with the outer wall of the lower end of the photosensitive plate.
5. A nondestructive testing method for a gas cylinder with two open ends according to claim 2, wherein the right end surface of the riser does not interfere with the left end surface of the gas cylinder.
6. A nondestructive testing method for a gas cylinder with two open ends according to claim 1, wherein the length of the photosensitive plate along the axis is greater than the length of the gas cylinder along the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311445723.8A CN117434091A (en) | 2023-11-02 | 2023-11-02 | Nondestructive testing method for gas storage bottle with two open ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311445723.8A CN117434091A (en) | 2023-11-02 | 2023-11-02 | Nondestructive testing method for gas storage bottle with two open ends |
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| Publication Number | Publication Date |
|---|---|
| CN117434091A true CN117434091A (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311445723.8A Pending CN117434091A (en) | 2023-11-02 | 2023-11-02 | Nondestructive testing method for gas storage bottle with two open ends |
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| Country | Link |
|---|---|
| CN (1) | CN117434091A (en) |
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- 2023-11-02 CN CN202311445723.8A patent/CN117434091A/en active Pending
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