Gas cylinder detecting and cleaning integrated device

Abstract

The invention belongs to the technical field of gas cylinder cleaning, and discloses a gas cylinder detecting and cleaning integrated device which comprises a cleaning assembly arranged in a gas cylinder, and the cleaning assembly comprises a laser cutting head; the driving unit is used for driving the laser cutting head to move up and down in the gas cylinder; the recognition unit is used for acquiring image information of the inner wall of the gas cylinder; the data processing unit is used for receiving and identifying the image information, marking burr point locations if the burr point locations are identified in the image, and then controlling the driving unit to drive the laser cutting head to move to the burr point locations and send cutting signals to the laser cutting head; according to the scheme, by means of laser non-contact cutting, burrs on the inner wall of the gas cylinder can be recognized and removed, the inner wall without the burrs cannot be impacted, and stress or pits and scratches caused by mechanical abrasion and collision are avoided; the gas cylinder cleaning device solves the problem that an existing gas cylinder cleaning device is prone to causing damage to the inner wall when burrs on the inner wall of a gas cylinder are removed.

Description

Technical Field

[0001] This solution belongs to the technical field of gas cylinder cleaning, and specifically relates to an integrated device for gas cylinder detection and cleaning. Background Art

[0002] Referring to the background art of the existing publication (announcement) number CN118493270A, a gas storage cylinder is a high-pressure container widely used for storing gases. Many gases such as oxygen, nitrogen, hydrogen, argon, carbon dioxide, natural gas, and acetylene are stored and transported through gas storage cylinders. During the manufacturing process of gas storage cylinders, it is necessary to clean impurities such as rust, oxide layers, and burrs on their inner walls to make the inner walls of the gas storage cylinders smooth and flat.

[0003] Referring to the literature of the existing publication (announcement) number CN118493270A, a cleaning machine for the inner wall of a gas storage cylinder body is disclosed, which includes a material barrel for storing shot blasting steel balls. The opening of the material barrel faces upward, and a conveying pipe and a scattering pipe connected and installed at the top of the conveying pipe are arranged inside the material barrel. The steel balls are conveyed upward through the conveying pipe into the scattering pipe. A plurality of injection ports are opened on the outer wall of the scattering pipe, and a support frame is arranged outside the scattering pipe. A brush is arranged on the support frame, and the brush is used for cleaning the inner wall of the gas cylinder.

[0004] The above cleaning device uses the spherical curtain formed by the high-speed rotating steel balls to perform shot blasting cleaning on the inner wall of the gas storage cylinder. Although it can remove impurities such as rust, oxide layers, and burrs, using the steel balls to impact the inner wall of the gas cylinder is likely to cause stress on the inner wall of the gas cylinder and is likely to cause material fatigue, thus affecting the structure of the gas cylinder. At the same time, the impact of the steel balls may produce small depressions or scratches on the inner wall of the gas cylinder, and these surface defects are likely to become stress concentration areas, increasing the risk of cracks or leaks in the gas cylinder during use. Therefore, there is an urgent need for a cleaning device that can remove burrs on the inner wall of the gas cylinder and reduce damage to the inner wall of the gas cylinder. Summary of the Invention

[0005] The purpose of this solution is to provide an integrated device for gas cylinder detection and cleaning to solve the problem that the existing gas cylinder cleaning device is prone to cause inner wall damage when removing burrs on the inner wall of the gas cylinder.

[0006] To achieve the above purpose, this solution provides an integrated device for gas cylinder detection and cleaning, which includes a cleaning component arranged inside the gas cylinder. The cleaning component includes: A laser cutting head; A driving unit, which is used to drive the laser cutting head to move up and down inside the gas cylinder; An identification unit, which is arranged on the laser cutting head and is used to obtain image information of the inner wall of the gas cylinder; A data processing unit, which is used to receive and identify image information. If burr points are identified in the image, three-dimensional punctuation is performed on the burr points in sequence, and then the driving unit is controlled to drive the laser cutting head to move to the burr points and a cutting signal is sent to the laser cutting head.

[0007] The principle of this solution is as follows: The image information of the inner wall of the gas cylinder is obtained by the recognition unit and transmitted to the data processing unit for analysis and recognition to determine the specific positions of the inner wall burrs. When the data processing unit identifies the burr points, three-dimensional punctuation is performed on these points, that is, the positions of the burrs in the three-dimensional space of the inner wall of the gas cylinder are determined. Then, the data processing unit controls the driving unit according to this punctuation information to drive the laser cutting head to move to each burr point. After reaching the point, a cutting signal is sent to the laser cutting head to cut the burrs with the laser.

[0008] The effect of this solution is as follows: By using laser non-contact cutting, the burrs on the inner wall of the gas cylinder can be identified and removed, and the inner wall without burrs will not be impacted, avoiding stress, dents and scratches caused by mechanical wear and collision.

[0009] Further, the driving unit is a cylinder, and the laser cutting head is arranged on the piston rod of the cylinder.

[0010] The principle and effect of this solution are as follows: The laser cutting head is driven by the cylinder to move up and down in the gas cylinder, so as to obtain image information and cut the burrs.

[0011] Further, the driving unit includes a first cylinder body and a first piston. The first cylinder body is a first cylinder body with an opening at the bottom. The first piston is slidably arranged in the first cylinder body. A first sealing chamber is formed by enclosing one side of the first piston and the first cylinder body. A driving rod is connected to the other side of the first piston. The free end of the driving rod is connected to the laser cutting head. The driving rod is a hollow driving rod and is connected to a high-pressure nitrogen source through a pipeline.

[0012] The principle and effect of this solution are as follows: (1) When high-pressure nitrogen is filled into the gas cylinder through the hollow drive rod, the pressure inside the gas cylinder cavity gradually increases, forming a thrust force on the first piston. Since the bottom opening of the cylinder block is connected to the gas cylinder and the top is a closed sealed chamber, the first piston slides upward along the first cylinder block under the action of the pressure difference, thereby driving the drive rod and the laser cutting head to rise synchronously, so as to obtain image information and cut the burrs. (2) While detecting and cleaning the burrs, this solution needs to dry the gas cylinder to remove the moisture on the inner wall of the gas cylinder, and this solution adopts the positive pressure replacement method. Refer to "Research on the Drying Process of Ultra-Low Dew Point Nitrogen Gas Cylinders" (Wu Zhijian, Li Ling. Research on the Drying Process of Ultra-Low Dew Point Nitrogen Gas Cylinders [J]. Petrochemical Design, 2024, 41(1): 16-20). The positive pressure replacement method is to inject nitrogen with a certain pressure and low dew point into the gas cylinder, then seal the gas cylinder. The nitrogen is mixed evenly with the water vapor inside the gas cylinder through diffusion, relieve the pressure and then conduct the second replacement, and cycle the operation until the dew point is finally reached. The nitrogen replacement drying speed depends on the water vapor content in the nitrogen and the replacement pressure. The lower the water vapor content in the nitrogen used for replacement, the higher the replacement pressure and the flow rate of the replacement gas, the better the replacement effect.

[0013] Furthermore, the recognition unit includes an arc plate and a sleeve. The two ends of the sleeve are respectively connected to the drive rod and the laser cutting head. The arc plate is arranged on the outer wall of the sleeve, and the arc plate carries charges opposite to those of the inner wall of the gas cylinder.

[0014] The principle and effect of this solution are as follows: (1) Before cleaning the gas cylinder, apply charges opposite to the polarity of the inner wall of the gas cylinder to the arc plate (for example, if the inner wall material of the gas cylinder is metal and positively charged, the arc plate is preset to be negatively charged). According to the principle of electrostatic induction, an induced charge layer opposite to the charge of the arc plate will be formed on the surface of the inner wall of the gas cylinder. At this time, the burrs on the inner wall of the gas cylinder, as tiny tip structures, have an extremely small radius of curvature (usually in the micron range), resulting in a significant increase in the electric field strength in this area (according to the Maxwell electric field distribution formula, the electric field strength is inversely proportional to the radius of curvature). When the local field strength exceeds the air breakdown threshold (about 3 kV / mm), corona discharge or streamer discharge occurs at the tip of the burr. This discharge phenomenon is accompanied by photon radiation of visible light (i.e., light spots). The light spots are captured by the photoelectric sensor on the laser cutting head, and the image information is sent to the data processing unit, so as to locate the burrs, and then control the laser cutting head to cut at the light spot. (2) In this solution, nitrogen is introduced during the detection process, so that the dielectric strength of nitrogen under high pressure (about 3 kV / mm·atm) is lower than that of air, making it easier for the discharge to break through the medium to form a stable arc under the same voltage, and the brightness of the light spot is increased, making it easier to capture the burrs.

[0015] Further, a telescopic unit for telescoping the arc-shaped plate is provided inside the sleeve. The telescopic unit includes a second cylinder body, a second piston, and a third piston. The second cylinder body is fixedly provided inside the sleeve. The second cylinder body is provided with an air inlet. The second piston and the third piston are both slidably provided on the inner wall of the second cylinder body and are located at the rear end of the air inlet. The second piston is connected with a spring, and the free end of the spring is fixedly connected with the cylinder body. The second cylinder body, the second piston, and the third piston enclose a second sealed chamber. A working medium is provided inside the second sealed chamber. The other side of the third piston is connected with a support rod, and the free end of the support rod is fixedly connected with the arc-shaped plate.

[0016] The principle and effect of this solution are as follows: (1) After high-pressure nitrogen is introduced into the gas cylinder, the air pressure enters the second cylinder body from the air inlet, thereby pushing the second piston to move against the spring resistance. At this time, the working medium (such as hydraulic oil) forms a pressure transmission medium in the second sealed chamber to push the third piston to move. The third piston drives the arc-shaped plate to extend outwards through the support rod, reducing the distance between the arc-shaped plate and the inner wall of the gas cylinder. According to the field strength distribution formula of tip discharge E = V / d (V is the voltage between electrodes, d is the distance), by reducing the distance between the two, it is easier for the burr tip to break through the breakdown threshold of the nitrogen medium, generating a more stable discharge light spot, thereby improving the light spot positioning accuracy. (2) This solution can be applied to gas cylinders with variable diameters (such as special-shaped gas cylinders). By controlling the relationship between the spring stiffness coefficient k and the nitrogen pressure P, the extension amount of the arc-shaped plate is linearly corresponding to the change in the inner diameter of the gas cylinder.

[0017] Further, chutes are provided inside both the first cylinder body and the second cylinder body. The driving rod and the support rod are respectively slidably connected with the chutes inside the first cylinder body and the second cylinder body.

[0018] The principle and effect of this solution are as follows: The chutes are used to provide positioning and guiding functions for the movements of the driving rod and the support rod respectively.

[0019] Further, both ends of the sleeve are connected with the driving rod and the laser cutting head through rotary joints. The sleeve is communicated with the driving rod. The sleeve is provided with an inclined through hole, and the outlet end of the through hole faces the back of the arc-shaped plate, causing the arc-shaped plate to generate a torque and driving the arc-shaped plate to rotate around its rotation axis.

[0020] The principle and effect of this solution are as follows: (1) After high-pressure nitrogen enters the sleeve through the driving rod, the gas jets out at high speed from the inclined through-holes on the sleeve wall, generating a reaction force on the back of the arc-shaped plate. The tangential component of this force forms a torque, which drives the arc-shaped plate to rotate around its axis. (2) When nitrogen jets out from the through-holes, the nitrogen concentration in the area of the arc-shaped plate is higher than that in other positions of the gas cylinder, increasing the molecular density and thus improving the ionization efficiency and facilitating the positioning of burr highlights. (3) In this solution, the arc-shaped plate extends close to the inner wall of the gas cylinder and rotates from bottom to top inside the gas cylinder, causing the nitrogen to form a spiral turbulent flow inside the gas cylinder, avoiding gas stratification and improving the effect of air replacement inside the gas cylinder.

[0021] Furthermore, the support rod passes through the through-hole, and the outlet end of the through-hole faces the concave surface of the arc-shaped plate.

[0022] The principle and effect of this solution are as follows: When high-pressure nitrogen jets out from the through-hole at high speed and impacts the concave surface of the arc-shaped plate, a rotational torque driven by the pressure difference is formed, which drives the arc-shaped plate to drive the sleeve to rotate.

[0023] Furthermore, the number of the arc-shaped plates is multiple, and the multiple arc-shaped plates are arranged in a circumferential pattern along the center of the sleeve.

[0024] The principle and effect of this solution are as follows: The local torques generated by the jet flows of the inclined through-holes of the multiple arc-shaped plates are transmitted through the sleeve structure to increase the total torque, enabling the arc-shaped plate and the sleeve to rotate faster.

[0025] Furthermore, an inclined ventilation groove is formed between adjacent arc-shaped plates.

[0026] The principle and effect of this solution are as follows: By setting the inclined ventilation groove, the discharge direction of nitrogen is changed and the nitrogen is introduced into the gas cylinder. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of an integrated device for gas cylinder detection and cleaning according to the present invention Figure 1 ; Figure 2 is a schematic structural diagram of the cleaning component of the present invention; Figure 3 is a schematic structural diagram of the identification unit of the present invention Figure 1 ; Figure 4 is a schematic structural diagram of the identification unit of the present invention Figure 2 ; Figure 5 is a schematic structural diagram of the telescopic unit of the present invention; Figure 6 is a schematic structural diagram of an integrated device for gas cylinder detection and cleaning according to the present invention Figure 2 。

[0028] The reference numerals in the accompanying drawings of the specification include: cleaning assembly 1, laser cutting head 11, driving unit 12, first cylinder block 121, first piston 122, opening 123, first sealing chamber 124, driving rod 125, identification unit 13, arc-shaped plate 131, sleeve 132, through hole 1321, ventilation groove 133, gas cylinder 2, telescopic unit 3, second cylinder block 31, air inlet 311, second piston 32, spring 33, third piston 34, second sealing chamber 35, support rod 36. Detailed implementation manners

[0029] The following will clearly and completely describe the concept of the present invention and the technical effects produced in combination with embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present invention: Please refer to Figure 1 , a gas cylinder detection and cleaning integrated device, including a cleaning assembly 1 arranged in the gas cylinder 2. The cleaning assembly 1 is composed of a laser cutting head 11, a driving unit 12, an identification unit 13 and a data processing unit (not shown). Among them, the laser cutting head 11 and the data processing unit are both prior arts and will not be elaborated here too much. The laser cutting head 11 adopts a variable focal length lens group to adapt to burrs of different lengths. The laser cutting head 11 is driven by the driving unit 12 to move up and down in the gas cylinder 2; the identification unit 13 is arranged on the laser cutting head 11 and is used to obtain image information of the inner wall of the gas cylinder 2. The identification unit 13 adopts a CCD camera or a photoelectric sensor to capture burr highlights; the data processing unit is used to receive and identify the image information. If burr points are identified in the image, three-dimensional punctuation is performed on the burr points in sequence, and then the driving unit 12 is controlled to drive the laser cutting head 11 to move to the burr points and a cutting signal is sent to the laser cutting head 11. The data processing unit adopts an industrial control computer.

[0030] During specific operation, image information of the inner wall of the gas cylinder 2 is obtained through the identification unit 13 and transmitted to the industrial control computer for analysis and identification to determine the specific positions of the inner wall burrs. When the industrial control computer identifies the burr points, three-dimensional punctuation is performed on these points, that is, the positions of the burrs in the three-dimensional space of the inner wall of the gas cylinder 2 are determined. Then, the industrial control computer controls the driving unit 12 according to this punctuation information to drive the laser cutting head 11 to move to each burr point. After reaching the point, a cutting signal is sent to the laser cutting head 11 to cut the burrs with laser.

[0031] Please refer to Figure 2, the driving unit 12 can adopt a simple cylinder or hydraulic cylinder structure. The piston rod of the cylinder or hydraulic cylinder is connected to the laser cutting head 11, and the telescopic amount of the piston rod is controlled to adjust the position of the laser cutting head 11 in the gas cylinder 2. The driving unit is more preferably a first cylinder block 121 and a first piston 122. The first cylinder block 121 is a first cylinder block 121 with an opening 123 at the bottom, and the opening 123 communicates with the inner cavity of the gas cylinder 2. The first piston 122 is slidably arranged in the first cylinder block 121. The back surface of the first piston 122 and the first cylinder block 121 enclose a first sealed chamber 124. The air pressure in the first sealed chamber 124 is 0.6 Mpa. A driving rod 125 is connected to the front surface of the first piston 122. Sliding grooves (not shown) are provided in the first cylinder block 121. The driving rod 125 is slidably connected to the sliding grooves in the first cylinder block 121. The free end of the driving rod 123 is connected to the laser cutting head 11. The driving rod 125 is a hollow driving rod 125, and the driving rod 125 is provided with a deflation port communicating with the inner cavity of the gas cylinder 2. The driving rod 125 is connected to a pipeline through a rotary joint. The pipeline is connected to a nitrogen cylinder, and a high-pressure nitrogen source (not shown) is provided in the nitrogen cylinder. The pressure of the nitrogen source is 3 Mpa.

[0032] During specific operation, when the high-pressure nitrogen in the nitrogen cylinder is filled into the gas cylinder 2 through the hollow driving rod 125, the pressure in the inner cavity of the gas cylinder 2 gradually increases, forming a thrust on the first piston 122. Since the opening 123 at the bottom of the first cylinder block 121 communicates with the gas cylinder 2 and the top is the closed first sealed chamber 124, the first piston 122 slides upward along the first cylinder block 121 under the action of the pressure difference, thereby driving the driving rod 125 and the laser cutting head 11 to rise synchronously, so as to obtain image information and cut burrs. At the same time, by introducing nitrogen into the gas cylinder 2, the air in the gas cylinder 2 is replaced by the positive pressure replacement method.

[0033] Please refer to Figures 3 - 6, the recognition unit 13 includes an arc plate 131 and a sleeve 132. Both ends of the sleeve 132 are respectively connected to the driving rod 125 and the laser cutting head 11. The arc plate 131 is arranged on the outer wall of the sleeve 132 and has an opposite charge to the inner wall of the gas cylinder 2. Before cleaning the gas cylinder 2, a charge opposite to the polarity of the inner wall of the gas cylinder 2 is applied to the arc plate 131 (for example, if the inner wall material of the gas cylinder 2 is metal and positively charged, the arc plate 131 is preset to be negatively charged). According to the principle of electrostatic induction, an induced charge layer opposite to the charge of the arc plate 131 will be formed on the surface of the inner wall of the gas cylinder 2. At this time, the burrs on the inner wall of the gas cylinder 2, as tiny tip structures, have an extremely small radius of curvature (usually in the micron range), resulting in a significant increase in the electric field strength in this area (according to the Maxwell electric field distribution formula, the electric field strength is inversely proportional to the radius of curvature). When the local field strength exceeds the air breakdown threshold (about 3 kV / mm), corona discharge or streamer discharge occurs at the tip of the burr. This discharge phenomenon is accompanied by photon radiation of visible light (i.e., light spots). The light spots are captured by the photoelectric sensor on the laser cutting head 11, and the image information is sent to the data processing unit to locate the burrs, and then the laser cutting head 11 is controlled to cut at the light spot position.

[0034] Please continue to refer to Figures 3 - 6 , a telescopic unit 3 for telescoping the arc plate 131 is arranged in the sleeve 132. The telescopic unit 3 includes a second cylinder body 31, a second piston 32, and a third piston 34. The second cylinder body 31 is fixedly arranged in the sleeve 132. The second cylinder body 31 is provided with an air inlet 311, and the air inlet 311 communicates with the inner cavity of the gas cylinder 2. Both the second piston 32 and the third piston 34 are slidably arranged on the inner wall of the second cylinder body 31 and are located at the rear end of the air inlet 311. The second piston 32 is connected with a spring 33, and the free end of the spring 33 is fixedly connected to the cylinder body 31. The second cylinder body 31, the second piston 32, and the third piston 34 enclose a second sealed chamber 35. A hydraulic oil working medium is arranged in the second sealed chamber 35. The other side of the third piston 34 is connected with a support rod 36. Sliding grooves are arranged in the second cylinder body 31, and the support rod 36 is slidably connected with the sliding grooves in the second cylinder body 31. The free end of the support rod 36 is fixedly connected to the arc plate 131.

[0035] During specific operation, after high-pressure nitrogen is introduced into the gas cylinder 2, the air pressure enters the second cylinder body 31 from the air inlet 311, thereby pushing the second piston 32 to move against the resistance of the spring 33. At this time, the hydraulic oil forms a pressure transmission medium in the second sealed chamber 35 to push the third piston 34 to move. The third piston 34 drives the arc plate 131 to extend outwards through the support rod 36, reducing the distance between the arc plate 131 and the inner wall of the gas cylinder 2 (such as Figure 4 and Figure 6(as shown). According to the field strength distribution formula of point discharge E = V / d (V is the voltage between electrodes, d is the distance), by reducing the distance between the two, it is easier for the burr tip to break through the breakdown threshold of the nitrogen medium, generating a more stable discharge light spot, thereby improving the positioning accuracy of the light spot. At the same time, when detecting the variable-diameter gas cylinder 2, by controlling the relationship between the stiffness coefficient k of the spring 33 and the nitrogen pressure P, the extension amount of the arc-shaped plate 131 is linearly corresponding to the change in the inner diameter of the gas cylinder 1. For example, when the inner diameter of the gas cylinder 2 increases by 50 mm, the arc-shaped plate 131 automatically extends by 8 mm, keeping the distance d from the inner wall constant within the range of 3 ± 0.2 mm.

[0036] Please continue to refer to Figures 3 - 6 , to further improve the replacement effect of nitrogen in the gas cylinder 2, the number of the arc-shaped plates 131 is four, and the four arc-shaped plates 131 are arranged in a circular pattern along the center of the sleeve 132. An inclined air vent groove 133 (the inclination angle is 60 degrees) is formed between adjacent arc-shaped plates 131 to change the discharge direction of nitrogen and make nitrogen flow into the gas cylinder 2. The two ends of the sleeve 132 are respectively connected to the driving rod 125 and the laser cutting head 11 through rotary joints (such as Figure 1 and Figure 2 shown), the sleeve 132 is communicated with the driving rod 125, the sleeve 132 is provided with an inclined through hole 1321 (the inclination angle is 60 degrees), and the support rod 36 passes through the through hole 1231. The outlet end of the through hole 1321 faces the concave surface of the arc-shaped plate 131, causing the arc-shaped plate 131 to generate a torque and driving the arc-shaped plate 131 to rotate around its rotation axis.

[0037] During specific operation, when high-pressure nitrogen enters the sleeve 132 from the driving rod 125, the gas sprays out at high speed from the inclined through hole 1321 on the wall surface of the sleeve 132, generating a reaction force on the back of the arc-shaped plate 131. The tangential component of this force forms a torque. This torque drives the arc-shaped plate 131 to rotate around its axis. Nitrogen sprays out from the through hole 1321, making the nitrogen concentration in the area of the arc-shaped plate 131 higher than that in other positions of the gas cylinder 2, increasing the molecular density, thereby improving the ionization efficiency and facilitating the positioning of the burr bright spot. And the arc-shaped plate 131 rotates from bottom to top in the gas cylinder 2, making the nitrogen form a spiral turbulent flow in the gas cylinder 2, avoiding gas stratification and improving the air replacement effect in the gas cylinder 2.

[0038] The above are only embodiments of the present invention. Common knowledge such as specific structures and characteristics known in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. An integrated device for detecting and cleaning gas cylinders, comprising a cleaning component (1) disposed inside a gas cylinder (2), characterized in that, The cleaning component (1) includes: A laser cutting head (11); A driving unit (12) for driving the laser cutting head (11) to move up and down inside the gas cylinder; An identification unit (13) provided on the laser cutting head (11) for acquiring image information of the inner wall of the gas cylinder; A data processing unit for receiving and identifying the image information. If burr points are identified in the image, three-dimensional punctuation is sequentially performed on the burr points, and then the driving unit (12) is controlled to drive the laser cutting head (11) to move to the burr points and a cutting signal is sent to the laser cutting head (11).

2. The integrated device for detecting and cleaning gas cylinders according to claim 1, wherein: The driving unit (12) is a cylinder, and the laser cutting head (11) is provided on the piston rod of the cylinder.

3. The integrated device for detecting and cleaning gas cylinders according to claim 1, characterized in that: The driving unit (12) includes a first cylinder body (121) and a first piston (122). The first cylinder body (121) is a first cylinder body (121) with an opening (123) at the bottom. The first piston (122) slides inside the first cylinder body (121). One side of the first piston (122) and the first cylinder body (121) enclose a first sealed chamber (124). The other side of the first piston (122) is connected to a driving rod (125). The free end of the driving rod (125) is connected to the laser cutting head (11). The driving rod (125) is a hollow driving rod (125) and is connected to a high-pressure nitrogen source through a pipeline.

4. The integrated device for detecting and cleaning gas cylinders according to claim 3, characterized in that: The identification unit (13) includes an arc plate (131) and a sleeve (132). The two ends of the sleeve (132) are respectively connected to the driving rod (125) and the laser cutting head (11). The arc plate (131) is provided on the outer wall of the sleeve (132), and the arc plate (131) has an opposite charge to the inner wall of the gas cylinder (2).

5. The integrated device for detecting and cleaning gas cylinders according to claim 4, characterized in that: An expansion and contraction unit (3) for expanding and contracting the arc plate (131) is provided inside the sleeve (132). The expansion and contraction unit (3) includes a second cylinder body (31), a second piston (32), and a third piston (34). The second cylinder body (31) is fixedly provided inside the sleeve (132). The second cylinder body (31) is provided with an air inlet (311). The second piston (32) and the third piston (34) both slide on the inner wall of the second cylinder body (31) and are located at the rear end of the air inlet (311). The second piston (32) is connected to a spring (33). The free end of the spring (33) is fixedly connected to the cylinder body (31). The second cylinder body (31), the second piston (32), and the third piston (34) enclose a second sealed chamber (35). A working medium is provided inside the second sealed chamber (35). The other side of the third piston (34) is connected to a support rod (36). The free end of the support rod (36) is fixedly connected to the arc plate (131).

6. The integrated device for detecting and cleaning gas cylinders according to claim 5, characterized in that: Chute grooves are provided inside both the first cylinder body (121) and the second cylinder body (31). The driving rod (125) and the support rod (36) are respectively slidably connected to the chute grooves inside the first cylinder body (121) and the second cylinder body (31).

7. An integrated device for detecting and cleaning gas cylinders according to claim 5, characterized in that: Both ends of the sleeve (132) are respectively connected to the driving rod (125) and the laser cutting head (11) through rotary joints. The sleeve (132) is in communication with the driving rod (125). The sleeve (132) is provided with an inclined through hole (1321), and the outlet end of the through hole (1321) faces the back surface of the arc-shaped plate (131), so as to generate a torque on the arc-shaped plate (131) and drive the arc-shaped plate (131) to rotate around its rotation axis.

8. An integrated device for detecting and cleaning gas cylinders according to claim 7, characterized in that: The support rod (36) passes through the through hole (1231), and the outlet end of the through hole (1321) faces the concave surface of the arc-shaped plate (131).

9. The integrated device for detecting and cleaning gas cylinders according to claim 7, wherein: The number of the arc-shaped plates (131) is multiple, and the multiple arc-shaped plates (131) are all arranged in a circumferential pattern around the center of the sleeve (132).

10. An integrated device for detecting and cleaning gas cylinders according to claim 7, characterized in that: An inclined ventilation groove (133) is formed between adjacent arc-shaped plates (131).

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