Device and method for detecting deformation of atmospheric storage tank

Abstract

The invention provides an atmospheric storage tank deformation detection device and method, and belongs to the field of atmospheric storage tank detection.The atmospheric storage tank deformation detection device comprises two connection area detection devices of the same structure and an internal area detection device, and the two connection area detection devices are used for detecting the connection positions of upper and lower end sockets and a barrel of an atmospheric storage tank respectively; the internal area detection device is used for detecting the internal position of the atmospheric storage tank; the connection area detection device comprises an annular guide rail, an annular gear ring, a driving unit, a three-dimensional scanner and a plurality of supporting assemblies. The internal area detection device comprises a supporting ring frame, a connecting column, a second telescopic rod and a universal connector. According to the scheme, the connection area of the end socket and the cylinder can be detected, and the internal area of the cylinder can be detected.

Description

Technical Field

[0001] This invention belongs to the field of atmospheric pressure storage tank testing technology, specifically relating to an atmospheric pressure storage tank deformation testing device and method. Background Technology

[0002] As key equipment for storing liquid materials such as petroleum and chemical raw materials, atmospheric pressure storage tanks are prone to deformation during long-term use due to factors such as foundation settlement, material fatigue, and internal pressure changes. Therefore, regular and comprehensive deformation testing of the storage tank structure is of great significance.

[0003] Currently, common inspection methods include manual periodic gauging, external measurement with a total station, or fixed-point sensor detection. However, these methods often suffer from low efficiency, long inspection cycles, or the ability to acquire only partial data, making it difficult to achieve rapid, three-dimensional, and high-precision detection of the overall deformation state of the storage tank. Especially for large storage tanks, the structural morphology of key parts such as the connection area between the end cap and the cylinder, and the bottom edge plate are complex, with diverse deformation modes. Existing inspection methods cannot achieve continuous, synchronous, and accurate scanning of their inner and outer surfaces, thus failing to provide complete and reliable data support for structural safety assessment and early warning.

[0004] In the prior art, such as application number CN202420385016.8 entitled "Corrosion Detection Device for Atmospheric Pressure Sulfuric Acid Storage Tanks," which relates to the field of sulfuric acid storage tank corrosion detection technology, a pair of movable rods are inserted inside a fixed plate. The bottom ends of the movable rods penetrate the tank cover and extend into the interior of the chamber. A detection mechanism, including a detector, is located at the bottom of the movable rods. Although this device can effectively detect corrosion and deformation inside the storage tank, it cannot provide a reasonable analysis of external failure conditions.

[0005] This invention addresses the problems existing in current atmospheric pressure storage tank deformation detection devices by providing a device and method that can comprehensively detect internal and external deformation and corrosion damage of storage tanks. Its focus is on performing three-dimensional scanning of the vulnerable end cap area to ensure the safe and stable operation of the tank. Summary of the Invention

[0006] This invention proposes a deformation detection device for an atmospheric pressure storage tank, characterized in that it includes two connection area detection devices with identical structures and one internal area detection device. The two connection area detection devices are used to detect the connection positions between the upper and lower end caps and the cylinder of the atmospheric pressure storage tank, respectively, and the internal area detection device is used to detect the internal position of the atmospheric pressure storage tank. The connection area detection device includes: An annular guide rail, with an inner diameter larger than the cylinder diameter of the atmospheric pressure storage tank, is fitted onto the atmospheric pressure storage tank. After fitting, the annular guide rail is placed horizontally and coincides with the axis of the atmospheric pressure storage tank. An annular gear ring is mounted on an annular guide rail, with its axis coinciding with the annular guide rail. The drive unit is used to move in a circular trajectory around the axis of the annular guide rail; A 3D scanner is connected to the drive unit, with its lens facing the connection point between the end cap and the cylinder. The angle of the 3D scanner is adjustable. Multiple support components are mounted on an annular guide rail. The multiple support components are arranged in a circumferential array along the axis of the annular guide rail to support the annular guide rail on the cylinder or the ground. The internal area detection device includes: Support ring frame, used to be placed on the upper surface of the atmospheric pressure storage tank; The connecting column is fixedly installed at the lower side of the support ring frame at its upper end and can extend into the atmospheric pressure storage tank from the opening at the top of the atmospheric pressure storage tank. The upper end of the second telescopic rod is fixedly connected to the lower end of the connecting column, and the axis of the second telescopic rod is parallel to the axis of the top opening. An electric turntable is installed at the lower end of the second telescopic rod, with its axis of rotation parallel to the axis of the opening; The universal connector is mounted on the turntable of the electric turntable at one end and a high-definition camera at the other end.

[0007] Furthermore, the driving unit includes: The slider is movably connected to the guide groove of the annular guide rail and can only move in a circular trajectory around the axis of the annular guide rail. The gear is rotatably connected to the slider and meshes with the ring gear. A DC motor, mounted on a slider, is used to drive the gears to rotate.

[0008] Furthermore, the support component includes: The connecting block is fixed to the outer edge surface of the annular guide rail; The connecting shaft is rotatably connected to the connecting block, and the axis of the connecting shaft is parallel to the horizontal plane; the rotational resistance of the connecting shaft and the connecting block is large, and the connecting shaft and the connecting block cannot rotate by their own weight alone; The first telescopic rod has one end fixedly connected to the connecting shaft, and the other end rotatably connected to an abutment block. The axis of rotation of the abutment block is parallel to the axis of the connecting shaft. The first telescopic rod is a hydraulic telescopic rod.

[0009] Furthermore, the connecting column has multiple radially formed grooves on its side, each groove containing a side support device, the side support device comprising: The horizontal shaft is rotatably connected in the groove, and the horizontal shaft is located at the lower end of the groove. The axis of the horizontal shaft is parallel to the horizontal plane. The third telescopic rod is fixedly connected to the horizontal axis at one end and connected to a stop rod at the other end. The third telescopic rod is a hydraulic telescopic rod, and the stop rod is used to hold the inner wall of the atmospheric pressure storage tank.

[0010] Furthermore, the slider is not completely within the guide groove of the annular guide rail. A support rod is fixedly connected to the part of the slider that extends out of the guide groove. An annular connector is installed at the end of the support rod away from the slider. The 3D scanner is rotatably connected to the annular connector. A servo motor for driving the 3D scanner to rotate is installed on the annular connector. The servo motor is self-locking when power is off.

[0011] Furthermore, the surface of the abutment block that contacts the ground or the outer surface of the cylinder is provided with an anti-slip skin.

[0012] Furthermore, a method for detecting deformation of an atmospheric pressure storage tank includes the following steps: S1: Simultaneously activate two connection area detection devices. The 3D scanners of the two connection area detection devices scan the images of the connection between the upper and lower end caps and the cylinder of the atmospheric pressure storage tank, respectively. After the drive unit of the connection area detection device rotates X revolutions, the control system sends angle information to the servo motor to fine-tune the angle of the 3D scanners of the two connection area detection devices and fuses the captured images based on image fusion technology. S2: After the two connection area detection devices have completed their detection, the internal area detection device is installed. The electric turntable is driven by the control system. After each P rotation, the turntable stops, and the second telescopic rod descends by N until it reaches its maximum extension length. Then, the second telescopic rod begins to reset. During the reset and ascent process, detection continues. After each P rotation, the turntable stops, and the second telescopic rod rises by N until the second telescopic rod is fully reset. The images of the interior of the atmospheric pressure storage tank obtained from the two strokes are then fused. S3: Using computer image analysis technology, analyze the images obtained in S1 and S2, and have relevant personnel determine whether the atmospheric pressure storage tank is deformed.

[0013] The beneficial effects that can be achieved by adopting the above technologies are: 1. This solution designs two identical connection area detection devices and one internal area detection device to scan or photograph the deformation of the connection area between the head and the cylinder of the atmospheric pressure storage tank. Then, the image fusion technology is used to generate a fused image, and finally, it is determined whether deformation has occurred, which can ensure the safe and stable operation of the tank.

[0014] 2. The internal area detection device can not only rely on the second telescopic rod to realize the displacement of the high-definition camera and detect the entire internal depth, but also rely on the electric turntable to realize circumferential detection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 This is a cross-sectional view of the connection area detection device; Figure 3This is a schematic diagram of the connection structure between the ring connector and the 3D scanning frame; Figure 4 This is a schematic diagram of the connection structure between the first telescopic rod and the abutment block; Figure 5 This is a schematic diagram of the connection structure between the second telescopic rod and the high-definition camera.

[0016] 1. Connection area detection device; 11. Circular guide rail; 12. Circular gear ring; 13. Slider; 14. Gear; 15. DC motor; 16. Support rod; 17. Circular connector; 18. 3D scanner; 19. Servo motor; 190. Connecting block; 191. Connecting shaft; 192. First telescopic rod; 193. Abutment block; 194. Anti-slip skin; 2. Internal area detection device; 21. Support ring frame; 22. Connecting column; 23. Second telescopic rod; 24. Electric turntable; 25. Universal connector; 26. High-definition camera; 27. Groove; 28. Horizontal axis; 29. ​​Third telescopic rod; 210. Abutment rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: As Figure 1 As shown, an atmospheric pressure storage tank deformation detection device includes two identical connection area detection devices 1 and an internal area detection device 2. The two connection area detection devices 1 are used to detect the connection positions between the upper and lower end caps and the cylinder of the atmospheric pressure storage tank, respectively, and the internal area detection device 2 is used to detect the internal position of the atmospheric pressure storage tank.

[0019] Since the two connection area detection devices 1 have the same structure, we will take one of the connection area detection devices 1 as an example, see... Figure 2 The connection area detection device 1 includes: The annular guide rail 11, with an inner diameter larger than the diameter of the cylinder of the atmospheric pressure storage tank, is made of plastic and can be fitted onto the outside of the storage tank to ensure that the detection unit on the annular guide rail 11 can perform external detection of the connection position between the end cap and the cylinder. When the annular guide rail 11 is fitted onto the storage tank, its axis coincides with the axis of the storage tank and is supported on the cylinder or the ground by the support assembly described later. The upper device supports the cylinder, and the lower device supports the ground.

[0020] An annular gear ring 12 is mounted on an annular guide rail 11; The drive unit, mounted on the annular guide rail 11, rotates in a circular motion along the axis of the annular guide rail 11 by engaging with the annular gear ring 12. The drive unit includes a slider 13, which is movably connected within the guide groove of the annular guide rail 11 (the guide groove is annular) and can only move in a circular trajectory around the axis of the annular guide rail 11. A gear 14 is rotatably connected to the slider 13; the axis of the gear 14 is parallel to the axis of the cylinder and meshes with the annular gear ring 12. A DC motor 15 is mounted on the top of the slider 13, driving the gear 14 to rotate. Because the gear 14 meshes with the annular gear ring 12, the drive unit can self-drive in a circular motion around the axis of the annular guide rail 11 under the action of the motor.

[0021] The slider 13 is not completely within the guide groove of the annular guide rail 11. A support rod 16 is fixedly connected to the portion of the slider 13 that extends beyond the guide groove. The length of the support rod 16 is along the radial direction of the atmospheric pressure storage tank. An annular connector 17 is installed at the end of the support rod 16 away from the slider 13 (see...). Figure 3 A 3D scanner 18 is rotatably connected to the ring connector 17, with its axis of rotation parallel to the horizontal plane. When the 3D scanner 18, ring connector 17, and drive unit move as a whole, the lens of the 3D scanner 18 always faces the corresponding connection position between the end cap and the cylinder; that is, the lens of the 3D scanner 18 in the upper connection area detection device 1 structure faces the connection position between the upper end cap and the cylinder, and the lens of the 3D scanner 18 in the lower connection area detection device 1 structure faces the connection position between the lower end cap and the cylinder. The ring connector 17 is essentially a bracket for rotating the 3D scanner 18 and changing the lens elevation angle. A servo motor 19 is mounted on the ring connector 17, which drives the 3D scanner 18 to rotate around its axis. The servo motor 19 has a power-off self-locking function, which can fix the angle of the 3D scanner when it stops. When the servo motor 19 rotates, the lens elevation angle of the 3D scanner 18 changes. The elevation angle is observed by the naked eye, thus ensuring that the lens of the 3D scanner 18 faces the connection position between the end cap and the cylinder. Based on the pre-scan results of the 3D scanner 18, its elevation angle can be manually adjusted again.

[0022] The connection area detection device 1 also includes at least three support components (three in this embodiment), each support component being mounted on an annular guide rail 11 and arranged in a circular array around the axis of the annular guide rail 11. For example, see [example of a single support component]. Figure 4 The support component includes: Connecting block 190 is fixed to the outer edge surface of annular guide rail 11; The connecting shaft 191 is rotatably connected to the connecting block 190, and the axis of the connecting shaft 191 is parallel to the horizontal plane.

[0023] The first telescopic rod 192 has one end fixedly connected to the connecting shaft 191, and the other end rotatably connected to an abutment block 193. The rotation axis of the abutment block 193 is parallel to the rotation axis of the connecting shaft 191. The aforementioned first telescopic rod 192 is a hydraulic first telescopic rod 192, controlled by a control system signal to ensure that the extension of each first telescopic rod 192 is the same. During actual testing, the abutment block 193 of the upper connecting area detection device 1 abuts against the outer surface of the cylinder, and the abutment block 193 of the lower connecting area detection device 1 abuts against the ground. A rubber anti-slip skin 194 is adhered to the surface of the abutment block 193 that abuts against the ground or the outer surface of the cylinder, which protects the outer surface of the cylinder and increases friction to prevent displacement during testing.

[0024] When installing the upper connection area detection device 1, the anti-slip skins 194 of multiple abutment blocks 193 are first held against the same height on the outer surface of the cylinder. Then, the control system wirelessly sends signals to each of the first telescopic rods, causing the multiple first telescopic rods 192 to extend or retract simultaneously. During the extension or retraction process, the height and position of the abutment blocks 193 do not change, while the height of the annular guide rail 11 changes. The rotational resistance at the connection shaft 191 and the connection block 190 is relatively large (greater than 60N, the weight of the detection device itself is about 20-30N, and other forces are small and negligible) and cannot rotate. The connection shaft 191 will only rotate under the drive of manual or hydraulic first telescopic rods 192. Therefore, there is no need to worry about the connection shaft 191 rotating randomly due to gravity during the use of the upper connection area detection device 1, causing the upper connection area detection device 1 to fall off the atmospheric pressure storage tank. By extending or shortening the first telescopic rod 192 of the upper connection area detection device 1, the height of the three-dimensional scanner 18 of the upper connection area detection device 1 can be changed, ensuring that the three-dimensional scanner 18 of the upper connection area detection device 1 is at a height that can detect the corresponding connection area.

[0025] When installing the lower connection area detection device 1, the anti-slip skins 194 of multiple abutment blocks 193 are first held against a horizontal surface. Then, the control system wirelessly sends signals to each of the first telescopic rods 192, causing the multiple first telescopic rods 192 to extend or retract simultaneously. During the extension or retraction process, the position of the abutment blocks 193 on the ground remains unchanged, while the height of the annular guide rail 11 changes. Similarly, due to the large rotational resistance at the connection shaft 191 and the connection block 190, the detection device cannot rotate by its own weight. Therefore, there is no need to worry about the lower connection area detection device 1 collapsing due to the connection shaft 191 rotating arbitrarily under gravity during use. By extending or retracting the first telescopic rods 192 of the lower connection area detection device 1, the height of the 3D scanner 18 of the lower connection area detection device 1 can be changed, ensuring that the 3D scanner 18 of the lower connection area detection device 1 is at a height capable of detecting the corresponding connection area.

[0026] like Figure 5 As shown, the internal area detection device 2 includes: The radial length of the support ring 21 is greater than the diameter of the top opening of the atmospheric pressure tank. Therefore, the support ring 21 cannot enter the interior of the atmospheric pressure tank from the top opening. When using the internal area detection device 2, the support ring 21 is first placed on the top surface of the atmospheric pressure tank, and then fixed to the outer surface of the atmospheric pressure tank by bolts pre-set on the outer surface of the atmospheric pressure tank, ensuring the stability of the internal area detection device 2 during detection.

[0027] The connecting column 22 is fixedly installed on the lower side of the support ring frame 21 at its upper end. The axis of the connecting column 22 is parallel to the axis of the opening. The diameter of the connecting column 22 is smaller than the diameter of the top opening. Therefore, the lower end of the connecting column 22 can extend into the cylinder from the opening.

[0028] The upper end of the second telescopic rod 23 is fixedly connected to the lower end of the connecting column 22, and the axis of the second telescopic rod 23 is parallel to the axis of the top opening. The second telescopic rod 23 is a hydraulic telescopic rod. An electric turntable 24 (rotation speed 1-2 r / min) is fixedly connected to the bottom end of the second telescopic rod 23. The axis of the electric turntable is parallel to the axis of the top opening, and its turntable faces downwards. A universal connector 25 is installed on the electric turntable 24. A universal connector, also called a universal joint, is a conventional device. One end of the universal connector is fixedly connected to the turntable of the electric turntable, and a high-definition camera 26 is installed on the other end. Under manual operation, the high-definition camera 26 can rotate in any direction relying on the universal connector 25, ensuring that the lens of the high-definition camera 26 is reasonably oriented towards the inner wall of the atmospheric pressure storage tank. Furthermore, due to the large friction between each movable joint of the universal connector 25, the angle of the high-definition camera 26 can only be rotated under manual operation. Without manual operation, the high-definition camera 26 cannot rotate the joints of the universal connector 25 by its own weight, ensuring the stability of the high-definition camera 26 during the inspection process.

[0029] Multiple grooves 27 are radially provided on the side of the connecting post 22. In this embodiment, there are 3 grooves. Each groove 27 is arranged in a circumferential array along the axis of the connecting post 22. Taking a single groove 27 as an example, the groove 27 is a groove formed by cutting along the radial direction of the connecting post 22 with the circumferential side surface of the connecting post 22 as the initial surface.

[0030] Each groove 27 is provided with a set of side support devices, which include: A horizontal shaft 28 is rotatably connected in a groove 27; the horizontal shaft 28 is located at the lower end of the groove 27, and the axis of the horizontal shaft 28 is parallel to the horizontal plane; another servo motor for driving the horizontal shaft to rotate is provided in the groove 27.

[0031] The third telescopic rod 29 is fixedly connected at its lower end to the horizontal shaft 28; the third telescopic rod 29 is a hydraulic telescopic rod. Driven by the servo motor, the horizontal shaft and the third telescopic rod 29 rotate as a whole around the axis of the horizontal shaft 28; the servo motor has two operating states: when the control system sends a support command to the servo motor, the servo motor rotates and rotates the upper end of the third telescopic rod 29 outside the groove 27, at which time the axis of the third telescopic rod is along the radial direction of the connecting post 22; when the control system sends a receiving command to the servo motor, the servo motor rotates and rotates the upper end of the third telescopic rod 29 into the groove 27, at which time the axis of the third telescopic rod 29 is parallel to the axis of the connecting post 22 (e.g., ...). Figure 5 state).

[0032] A stop rod 210 is fixed to the upper end of the third telescopic rod 29. When the horizontal shaft 28 and the third telescopic rod 29 rotate as a whole around the axis of the horizontal shaft 28, the stop rod 210 rotates out of the groove 27. As the third telescopic rod 29 extends, the stop rod 210 eventually abuts against the inner wall of the cylinder. Multiple side support devices cooperate to ensure the stability of the support. When the axis of the third telescopic rod 29 is manually perpendicular to the axis of the connecting column 22, the side support devices can support the inner wall of the cylinder.

[0033] Installation process of this device: The annular guide rail 11 is fitted onto the outer side of the upper cylinder of the storage tank, so that the axis of the annular guide rail 11 coincides with the axis of the storage tank. The connecting shaft 191 of the three support components is manually adjusted so that the first telescopic rod 192 faces the cylinder, and the anti-slip skin 194 of the abutment block 193 is held at the same height on the outer surface of the cylinder (ensuring that the annular guide rail is horizontal).

[0034] The control system drives the three first telescopic rods 192 to extend / retract synchronously, adjusting the height of the annular guide rail 11 so that the three-dimensional scanner 18 is aligned with the connection area between the upper end cap and the cylinder (during the height adjustment process, the position of the abutment block 193 is fixed, and it remains stable due to the high rotational resistance of the connecting shaft 191).

[0035] The servo motor 19 is started, and the operator sends angle information to the servo motor 19 through the control system. The servo motor 19 adjusts the lens elevation angle of the 3D scanner 18 so that it is precisely oriented towards the upper connection area to be detected. After stopping, the servo motor 19 is powered off and self-locked, fixing the scanner angle. At this point, the upper connection area detection device 1 is installed.

[0036] The lower annular guide rail 11 adopts a detachable structure (such as a bolt-on detachable structure) and is fitted onto the outer side of the lower cylinder of the storage tank (near the lower end cap). Personnel only need to align its axis with the tank axis (high precision is acceptable, with an error controlled within the range of 20-30mm). Manually adjust the connecting shafts 191 of the three support components so that the first telescopic rod 192 faces the ground, and the anti-slip skin 194 of the abutment block 193 is held against the horizontal ground (ensuring the annular guide rail is horizontal). The control system drives the three first telescopic rods 192 to extend / retract synchronously, adjusting the height of the annular guide rail 11 so that the 3D scanner 18 is aligned with the connection area between the lower end cap and the cylinder. At this point, the lower connection area detection device 1 is installed.

[0037] Manually adjust the universal connector 25 so that the lens of the high-definition camera 26 can be directed toward the internal area to be inspected (such as the inner wall of the cylinder, the inner side of the lower end cap, etc.). The shooting frequency of the high-definition camera 26 is 20Hz, and the angle is fixed by using the high friction of the universal connector 25.

[0038] Place the support ring 21 on the top surface of the storage tank and install it with bolts so that the lower end of the connecting column 22 extends into the inside of the cylinder from the top opening, ensuring that the axis of the connecting column 22 coincides with the axis of the storage tank (high precision is acceptable).

[0039] The control system sends a support command to another servo motor, rotating the third telescopic rod 29 out of the groove until its axis is perpendicular to the axis of the connecting column 22. The control system then automatically stops the servo motor. The control system wirelessly sends extension signals to each of the three third telescopic rods 29, driving them to extend synchronously. This causes the abutment rod 210 to press against the inner wall of the cylinder. A pressure sensor is installed at the end of the abutment rod; when the pressure feedback reaches 5N, the control system stops the extension of the third telescopic rod 29. At this point, the internal area detection device 2 is installed.

[0040] The electric turntable 24 is activated, and relevant personnel control the extension or retraction of the second telescopic rod 23 through the control system to manually adjust the height of the high-definition camera, thus completing the entire height detection of the storage tank.

[0041] Example 2: A deformation detection method for an atmospheric pressure storage tank, comprising the following steps: S1: Simultaneously activate two connection area detection devices 1. The 3D scanners 18 of the two connection area detection devices 1 scan the images of the connection points between the upper and lower end caps and the cylinder of the atmospheric pressure storage tank, respectively, and use them for subsequent image fusion. After the drive unit of the connection area detection device rotates X revolutions (e.g., 5 revolutions), the operator sends angle information to the servo motor through the control system, so that the angles of the 3D scanners of the two connection area detection devices 1 are finely adjusted (e.g., ±1-2°), providing more dimensional images to facilitate subsequent fusion. The rotational speed of the two connection area detection devices 1 around the annular guide rail is 5-10 r / min. S2: After the two connection area detection devices 1 have completed their detection, the internal area detection device 2 is installed. The electric turntable 24 is driven to rotate by the control system. After each rotation of P revolutions, the turntable stops, and the second telescopic rod descends by N, with a descent range of 3-5cm (e.g., N=4). After the second telescopic rod reaches its maximum extension length, it begins to reset. During the reset and ascent process, detection continues. After each rotation of P revolutions (e.g., 2 revolutions), the turntable stops, and the second telescopic rod rises by N, with an ascent range of 3-5cm (e.g., N=4). This continues until the second telescopic rod is fully reset. The images of the interior of the atmospheric pressure storage tank obtained from the two strokes are then fused.

[0042] S3: Using computer image analysis technology, analyze the images obtained in S1 and S2, and have relevant personnel determine whether the atmospheric pressure storage tank is deformed.

[0043] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A deformation detection device for an atmospheric pressure storage tank, characterized in that, It includes two identical connection area detection devices and one internal area detection device. The two connection area detection devices are used to detect the connection positions between the upper and lower end caps and the cylinder of the atmospheric pressure storage tank, respectively, and the internal area detection device is used to detect the internal position of the atmospheric pressure storage tank. The connection area detection device includes: An annular guide rail, with an inner diameter larger than the cylinder diameter of the atmospheric pressure storage tank, is fitted onto the atmospheric pressure storage tank. After fitting, the annular guide rail is placed horizontally and coincides with the axis of the atmospheric pressure storage tank. An annular gear ring is mounted on an annular guide rail, with its axis coinciding with the annular guide rail. The drive unit is used to move in a circular trajectory around the axis of the annular guide rail; A 3D scanner is connected to the drive unit, with its lens facing the connection point between the end cap and the cylinder. The angle of the 3D scanner is adjustable. Multiple support components are mounted on an annular guide rail. The multiple support components are arranged in a circumferential array along the axis of the annular guide rail to support the annular guide rail on the cylinder or the ground. The internal area detection device includes: Support ring frame, used to fix it to the upper surface of the atmospheric pressure storage tank; The connecting column is fixedly installed at the lower side of the support ring frame at its upper end and can extend into the atmospheric pressure storage tank from the opening at the top of the atmospheric pressure storage tank. The upper end of the second telescopic rod is fixedly connected to the lower end of the connecting column, and the axis of the second telescopic rod is parallel to the axis of the top opening. An electric turntable is installed at the lower end of the second telescopic rod, with its axis of rotation parallel to the axis of the opening; The universal connector is mounted on the turntable of the electric turntable at one end and a high-definition camera at the other end.

2. The atmospheric pressure storage tank deformation detection device according to claim 1, characterized in that, The driving unit includes: The slider is movably connected to the guide groove of the annular guide rail and can only move in a circular trajectory around the axis of the annular guide rail. The gear is rotatably connected to the slider and meshes with the ring gear. A DC motor, mounted on a slider, is used to drive the gears to rotate.

3. The deformation detection device for an atmospheric pressure storage tank according to claim 1, characterized in that, The support components include: The connecting block is fixed to the outer edge surface of the annular guide rail; The connecting shaft is rotatably connected to the connecting block, and the axis of the connecting shaft is parallel to the horizontal plane; the rotational resistance of the connecting shaft and the connecting block is large, and the connecting shaft and the connecting block cannot rotate by their own weight alone; The first telescopic rod has one end fixedly connected to the connecting shaft, and the other end rotatably connected to an abutment block. The axis of rotation of the abutment block is parallel to the axis of the connecting shaft. The first telescopic rod is a hydraulic telescopic rod.

4. The deformation detection device for an atmospheric pressure storage tank according to claim 1, characterized in that, The connecting column has multiple radially formed grooves on its side, and each groove is provided with a side support device, which includes: The horizontal shaft is rotatably connected in the groove, and the horizontal shaft is located at the lower end of the groove. The axis of the horizontal shaft is parallel to the horizontal plane. The third telescopic rod is fixedly connected to the horizontal axis at one end and connected to a stop rod at the other end. The third telescopic rod is a hydraulic telescopic rod, and the stop rod is used to hold the inner wall of the atmospheric pressure storage tank.

5. The deformation detection device for an atmospheric pressure storage tank according to claim 2, characterized in that, The slider is not completely within the guide groove of the annular guide rail. The part of the slider extending out of the guide groove is fixedly connected to a support rod. An annular connector is installed at the end of the support rod away from the slider. The 3D scanner is rotatably connected to the annular connector. A servo motor for driving the 3D scanner to rotate is installed on the annular connector. The servo motor is self-locking when power is off.

6. The deformation detection device for an atmospheric pressure storage tank according to claim 3, characterized in that, The surface of the abutment block that contacts the ground or the outer surface of the cylinder is provided with an anti-slip skin.

7. A method for detecting deformation of an atmospheric pressure storage tank, characterized in that, Includes the following steps: S1: Simultaneously activate two connection area detection devices. The 3D scanners of the two connection area detection devices scan the images of the connection between the upper and lower end caps and the cylinder of the atmospheric pressure storage tank, respectively. After the drive unit of the connection area detection device rotates X revolutions, the control system sends angle information to the servo motor to fine-tune the angle of the 3D scanners of the two connection area detection devices and fuses the captured images based on image fusion technology. S2: After the two connection area detection devices have completed their detection, the internal area detection device is installed. The electric turntable is driven by the control system. After each P rotation, the turntable stops, and the second telescopic rod descends by N until it reaches its maximum extension length. Then, the second telescopic rod begins to reset. During the reset and ascent process, detection continues. After each P rotation, the turntable stops, and the second telescopic rod rises by N until the second telescopic rod is fully reset. The images of the interior of the atmospheric pressure storage tank obtained from the two strokes are then fused. S3: Using computer image analysis technology, analyze the images obtained in S1 and S2, and have relevant personnel determine whether the atmospheric pressure storage tank is deformed.

Images