A real-time monitoring device for oil tank corrosion

Abstract

The application discloses a kind of oil storage tank corrosion real-time monitoring device, belong to monitoring device technical field, comprising: the lower T-shaped ring plate of being arranged in the bottom end of the outer lateral wall of oil storage tank, the upper ring plate of being arranged in the top end of the outer lateral wall of oil storage tank and the main control computer of being arranged in control room, the lower T-shaped ring plate and upper ring plate are equipped with locking mechanism with oil storage tank, the first Internet of Things controller is fixedly connected in the bottom end of the lower T-shaped ring plate;The application sets up upper ring plate and lower T-shaped ring plate, while upper ring plate and lower T-shaped ring plate are provided with rotary drive mechanism and lifting mechanism, can drive ultrasonic thickness gauge to rotate and move up and down, compared with prior art, not only stable in monitoring process will not occur jitter, improve monitoring data accuracy, and can realize the all-round monitoring of oil storage tank, while setting RBI software, can carry out risk analysis based on oil storage tank data, give risk ordering, find out weak link of oil storage tank, so that the timely maintenance of oil storage tank.

Description

Technical Field

[0001] This invention belongs to the field of monitoring device technology, specifically relating to a real-time monitoring device for corrosion of oil storage tanks. Background Technology

[0002] During the long-term operation of oil storage tanks, corrosion is a common natural phenomenon due to the complex atmospheric environment outside the tank and the corrosive petroleum media stored inside. Corrosion can shorten the service life of the tank and, in severe cases, cause the tank to collapse or even become unusable, resulting in serious safety risks and huge economic losses. It may also lead to serious leaks and environmental pollution accidents. Therefore, monitoring the degree of corrosion of oil storage tanks is crucial. It can help to understand the degree of corrosion in a timely manner, assess the remaining life of the tank, and minimize the risk of corrosion leaks by making it predictable and preventable.

[0003] Chinese Patent No. 202020883405.5 discloses an oil tank corrosion monitoring device, which consists of a lifting mechanism placed on the ground, a control and display mechanism installed on the lifting mechanism, a second long rod installed at the top of the lifting mechanism, a rope winding and unwinding mechanism installed on the second long rod, a rope installed on the rope winding and unwinding mechanism, and an ultrasonic generator and probe installed at the other end of the rope. When the device monitors the corrosion of the oil tank, the lifting mechanism raises the second long rod to directly above the opening of the oil tank, and then the rope winding and unwinding mechanism unwinds the rope. The rope drives the ultrasonic generator and probe to move down, detects data at multiple locations on the oil tank, and displays the data on the control and display mechanism so that staff can understand the degree of corrosion of the oil tank.

[0004] The inventors of this application have discovered that existing oil tank corrosion monitoring devices adjust the position through a lifting mechanism, and then use a winding mechanism to wind and unwind a rope to move an ultrasonic generator and probe to detect data from the oil tank and determine the degree of corrosion. During this monitoring process, the rope is prone to shaking, which causes the ultrasonic generator and probe to shake, easily affecting the accuracy of the monitoring data. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a real-time corrosion monitoring device for oil storage tanks. This device not only ensures stable monitoring without vibration, improving the accuracy of monitoring data, but also enables comprehensive monitoring of the oil storage tank. Furthermore, it allows for risk analysis based on tank data, providing risk ranking and identifying weak points in the tank for timely maintenance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a real-time corrosion monitoring device for oil storage tanks, comprising: a lower T-shaped ring plate disposed at the bottom of the outer wall of the oil storage tank, an upper ring plate disposed at the top of the outer wall of the oil storage tank, and a main control computer disposed in a control room; the lower T-shaped ring plate and the upper ring plate are fitted with a locking mechanism between themselves and the oil storage tank; a first Internet of Things (IoT) controller is fixedly connected to the bottom of the lower T-shaped ring plate; rotating ring plates are respectively connected to the top of the outer wall of the lower T-shaped ring plate and the bottom of the outer wall of the upper ring plate via bearings; a rotation drive mechanism for driving the two rotating ring plates to rotate in the same direction is assembled between the two rotating ring plates and the lower T-shaped ring plate; a fixed housing is disposed between the two rotating ring plates; the fixed housing is connected to the two rotating ring plates... A lifting mechanism is assembled between the rotating ring plates. A movable shell is provided near the side wall of the oil storage tank of the fixed shell. An elastic mechanism is assembled between the movable shell and the fixed shell. A third cavity and a first cavity are respectively opened inside the movable shell from the side near to the side away from the oil storage tank. A second IoT controller is fixedly connected inside the third cavity. An ultrasonic thickness gauge that contacts the outer wall of the oil storage tank is fixedly connected inside the first cavity. The rotating drive mechanism and the lifting mechanism are connected to the first IoT controller and the ultrasonic thickness gauge is connected to the second IoT controller through wires. The first IoT controller and the second IoT controller are connected to the main control computer through a base station. The main control computer is equipped with RBI software.

[0007] Preferably, the locking mechanism includes multiple threaded holes equally spaced along the circumference on the lower T-shaped ring plate and the upper ring plate. An adjusting screw is threadedly connected inside the threaded holes. The adjusting screw extends through the lower T-shaped ring plate to the outside on the side away from the lower T-shaped ring plate, and extends through the lower T-shaped ring plate to the inside of the lower T-shaped ring plate on the side close to the lower T-shaped ring plate, and is connected to a locking plate through a bearing.

[0008] Preferably, the rotation drive mechanism includes a second motor fixed to the bottom end of the lower T-shaped ring plate, a fixing plate fixed to the top end of the outer wall of the upper ring plate, and two external gear rings fixedly sleeved on the outer walls of the two rotating ring plates. A connecting rod is provided between the lower T-shaped ring plate and the fixing plate. The bottom end of the connecting rod is connected to the output shaft of the second motor through a coupling, and the top end of the connecting rod is connected to the fixing plate through a bearing. Two first gears are fixedly sleeved on the connecting rod and respectively mesh with the two external gear rings. The second motor is connected to the first IoT controller through a wire.

[0009] Preferably, the lifting mechanism includes a first motor fixed to the bottom end of the lower rotating ring plate and a movable screw disposed between the two rotating ring plates. The bottom end of the movable screw is connected to the output shaft of the first motor through a coupling, and the top end of the movable screw is connected to the upper rotating ring plate through a bearing. A movable seat is connected to the movable screw through a transmission nut. The movable seat is fixed to the fixed housing. The first motor and the first IoT controller are connected through a wire.

[0010] Preferably, the elastic mechanism includes a plurality of second connecting springs that are elastically connected at equal intervals between the fixed housing and the movable housing near each other's sidewalls.

[0011] Preferably, a lower battery is fixedly connected to the bottom end of the lower T-shaped ring plate, and an assembly groove is opened at the top end of the lower T-shaped ring plate. A lower solar panel is fixedly connected inside the assembly groove. An assembly frame is fixedly connected to the side wall of the fixed housing on both sides of the movable seat. An upper solar panel is fixedly connected to the assembly frame. A second cavity is opened on both sides of the third cavity and the first cavity inside the movable housing. An upper battery is fixedly connected inside the second cavity. The lower solar panel is connected to the lower battery, and the second motor, the first motor, and the first IoT controller are connected to the lower battery through wires. The two upper solar panels are connected to the two upper batteries, and the second IoT controller and the ultrasonic thickness gauge are connected to the two upper batteries through wires.

[0012] Preferably, couplant boxes are symmetrically arranged on both sides of the ultrasonic thickness gauge probe inside the first cavity. A moving drive mechanism is assembled between the two couplant boxes and the movable housing to drive the two couplant boxes to move in opposite directions. A valved inlet pipe is fixedly connected to the top of the couplant box. The couplant box contains couplant. An applicator sponge is fixedly connected to the side of the couplant box near the ultrasonic thickness gauge probe. The applicator sponge extends into the couplant box away from the probe and is immersed in the couplant.

[0013] Preferably, the moving drive mechanism includes two first through holes symmetrically opened on the movable housing and communicating with two second cavities respectively, a connecting shaft connected to the second cavity via bearings, and two second through holes symmetrically opened on the movable housing and communicating with the first cavity and the two second cavities on both sides. A T-shaped rod is provided inside the first through hole. The top end of the T-shaped rod extends through the first through hole to the top of the movable housing and is elastically connected to the top end of the movable housing with a first connecting spring. The bottom end of the T-shaped rod extends through the first through hole into the first cavity and is fixedly connected to a first toothed rod. A second gear is fixedly sleeved on the connecting shaft and meshes with the first toothed rod. A second toothed rod is provided inside the second through hole and meshes with the connecting shaft. The second toothed rod is fixedly connected to the coupling agent box near the coupling agent box.

[0014] Preferably, the distance between the coupling agent box and the inner wall on the same side of the movable housing is less than the length of the second toothed rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention features an upper ring plate and a lower T-shaped ring plate, with a rotation drive mechanism and a lifting mechanism on both plates. These mechanisms enable the ultrasonic thickness gauge to rotate and move up and down. Compared to existing technologies, this invention not only ensures stable monitoring without vibration, improving the accuracy of monitoring data, but also enables comprehensive monitoring of the oil storage tank. Furthermore, the invention incorporates RBI software, which performs risk analysis based on the oil storage tank data, ranks risks, and identifies weak points in the tank for timely maintenance.

[0017] 2. The upper ring plate and the lower T-shaped ring plate of the present invention are locked to the oil storage tank through a locking mechanism. The locking mechanism can be locked or disassembled by rotating the adjusting screw to drive the locking plate to move. It is convenient to install and disassemble and easy to use.

[0018] 3. This invention is based on wires and wireless communication connections, and the upper and lower structures are not related to each other, which can avoid the problem of limited use of the device due to the entanglement between wires and improve the ease of use of the device.

[0019] 4. The present invention is equipped with an automatic coupling agent application mechanism, which can automatically apply coupling agent to the probe of the ultrasonic thickness gauge, thereby improving the accuracy of monitoring results. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a partial vertical sectional view of the present invention;

[0022] Figure 3 This is a partial structural diagram of the present invention;

[0023] Figure 4 For the present invention Figure 3 Cross section view;

[0024] Figure 5 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] In the diagram: 1. Main control computer; 2. Upper ring plate; 3. Fixed plate; 4. Connecting rod; 5. Rotating ring plate; 6. First gear; 7. Assembly slot; 8. Lower T-shaped ring plate; 9. External gear ring; 10. First motor; 11. Lower solar panel; 12. Movable seat; 13. Movable screw; 14. Second motor; 15. First IoT controller; 16. Assembly frame; 17. Fixed housing; 18. Movable housing; 19. First through hole; 20. First connecting spring; 21. T-shaped rod; 22. 1. Upper solar panel; 23. Second connecting spring; 24. Upper battery; 25. First cavity; 26. Connecting shaft; 27. Second gear; 28. First rack; 29. ​​Inlet pipe with valve; 30. Coating sponge; 31. Coupling agent box; 32. Second through hole; 33. Second rack; 34. Second cavity; 35. Ultrasonic thickness gauge; 36. Second IoT controller; 37. Third cavity; 38. Adjusting screw; 39. Threaded hole; 40. Locking plate; 41. Lower battery. Detailed Implementation

[0026] The technical solutions of the embodiments 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, and 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.

[0027] Example 1

[0028] Please see Figure 1-5The present invention provides the following technical solution: a real-time corrosion monitoring device for an oil storage tank, comprising: a lower T-shaped ring plate 8 disposed at the bottom of the outer wall of the oil storage tank, an upper ring plate 2 disposed at the top of the outer wall of the oil storage tank, and a main control computer 1 disposed in a control room. A locking mechanism is fitted between the lower T-shaped ring plate 8 and the upper ring plate 2 and the oil storage tank. A first Internet of Things (IoT) controller 15 is fixedly connected to the bottom of the lower T-shaped ring plate 8. The first IoT controller 15 includes an IoT communicator and a controller. Rotating ring plates 5 are respectively connected to the top of the outer wall of the lower T-shaped ring plate 8 and the bottom of the outer wall of the upper ring plate 2 via bearings. A rotation drive mechanism for driving the two rotating ring plates 5 to rotate in the same direction is fitted between the two rotating ring plates 5 and the lower T-shaped ring plate 8. A fixed housing 17 is disposed between the two rotating ring plates 5. A lifting mechanism is fitted between the fixed housing 17 and the two rotating ring plates 5. A movable housing 18 is disposed near the side wall of the oil storage tank within the fixed housing 17. An elastic mechanism is assembled between the movable housing 18 and the fixed housing 17. The elastic connection between the movable housing 18 and the fixed housing 17 ensures that the movable housing 18 is always in contact with the oil storage tank, thereby improving monitoring accuracy. The movable housing 18 has a third cavity 37 and a first cavity 25 respectively, which are opened from the side closest to the oil storage tank to the side furthest away from the oil storage tank. The third cavity 37 is fixedly connected to a second IoT controller 36, which includes an IoT communicator and a controller. The first cavity 25 is fixedly connected to an ultrasonic thickness gauge 35 that contacts the outer wall of the oil storage tank. The rotation drive mechanism and the lifting mechanism are connected to the controller of the first IoT controller 15 and the controller of the ultrasonic thickness gauge 35 and the controller of the second IoT controller 36 through wires. The IoT communicator of the first IoT controller 15 and the IoT communicator of the second IoT controller 36 are connected to the main control computer 1 through a base station. The main control computer 1 is equipped with RBI software.

[0029] See appendix Figure 1-4Before the device performs real-time monitoring of the oil storage tank, the lower T-shaped ring plate 8 and the upper ring plate 2 of the device are respectively fitted onto the bottom and top of the outer wall of the oil storage tank, and then locked by the locking mechanism to fix the position of the lower T-shaped ring plate 8 and the upper ring plate 2. When the device performs real-time monitoring of the oil storage tank, the main control computer 1 transmits instructions, which are transmitted to the first IoT controller 15 and the second IoT controller 36 through the base station. The second IoT controller 36 controls the ultrasonic thickness gauge 35 to start, and the ultrasonic thickness gauge 35 measures the wall thickness data of the oil storage tank. The first IoT controller 15 controls the rotation drive mechanism and the lifting mechanism to start, and the rotation drive mechanism drives... Two rotating ring plates 5 rotate in the same direction, driving the lifting mechanism to rotate in the same direction, which in turn drives the fixed housing 17 and the movable housing 18 to rotate in the same direction. The lifting mechanism drives the fixed housing 17 and the movable housing 18 to move up and down. The rotation and up-and-down movement of the movable housing 18 can drive the ultrasonic thickness gauge 35 to move synchronously, realizing all-round wall thickness measurement of the oil storage tank. The second Internet of Things controller 36 transmits the measurement data of the ultrasonic thickness gauge 35 to the main control computer 1 through the base station. The RBI software of the main control computer 1 analyzes the measurement data of the ultrasonic thickness gauge 35, gives a risk ranking, and identifies the weak links of the oil storage tank so as to facilitate timely maintenance of the oil storage tank.

[0030] Specifically, the locking mechanism includes multiple threaded holes 39 evenly spaced along the circumference on the lower T-shaped ring plate 8 and the upper ring plate 2. An adjusting screw 38 is threadedly connected inside the threaded hole 39. The adjusting screw 38 extends through the lower T-shaped ring plate 8 to the outside on the side away from the lower T-shaped ring plate 8, and extends through the lower T-shaped ring plate 8 into the lower T-shaped ring plate 8 on the side close to the lower T-shaped ring plate 8. A locking plate 40 is connected to the lower T-shaped ring plate 8 through a bearing.

[0031] See appendix Figure 2 and 5 The locking mechanism is achieved by rotating multiple adjusting screws 38, which move the screws 38 in the corresponding threaded holes 39 toward the lower T-shaped ring plate 8, thereby driving multiple locking plates 40 to move in the same direction and clamping the oil storage tank to fix the positions of the lower T-shaped ring plate 8 and the upper ring plate 2.

[0032] Specifically, the rotation drive mechanism includes a second motor 14 fixed to the bottom end of the lower T-shaped ring plate 8, a fixing plate 3 fixed to the top of the outer wall of the upper ring plate 2, and two external gear rings 9 fixedly sleeved on the outer walls of the two rotating ring plates 5. A connecting rod 4 is provided between the lower T-shaped ring plate 8 and the fixing plate 3. The bottom end of the connecting rod 4 is connected to the output shaft of the second motor 14 through a coupling, and the top end of the connecting rod 4 is connected to the fixing plate 3 through a bearing. Two first gears 6 are fixedly sleeved on the connecting rod 4 and respectively mesh with the two external gear rings 9. The second motor 14 is connected to the controller of the first Internet of Things controller 15 through a wire.

[0033] See appendix Figure 1-2The rotation drive mechanism is started by controlling the second motor 14 through the first IoT controller 15. The second motor 14 drives the output shaft to rotate, which drives the connecting rod 4 to rotate, which drives the two first gears 6 to rotate, which drives the two external gear rings 9 to rotate, which drives the two rotating ring plates 5 to rotate, thus achieving the same-direction rotation drive of the two rotating ring plates 5.

[0034] Specifically, the lifting mechanism includes a first motor 10 fixed to the bottom of the lower rotating ring plate 5 and a movable screw 13 disposed between the two rotating ring plates 5. The bottom end of the movable screw 13 is connected to the output shaft of the first motor 10 through a coupling, and the top end of the movable screw 13 is connected to the upper rotating ring plate 5 through a bearing. A movable seat 12 is connected to the movable screw 13 through a transmission nut. The movable seat 12 is fixed to the fixed housing 17. The first motor 10 is connected to the controller of the first Internet of Things controller 15 through a wire.

[0035] See appendix Figure 1 and 3 The lifting mechanism is started by controlling the first motor 10 through the first IoT controller 15. The first motor 10 drives the output shaft to rotate periodically in the forward and reverse directions, which drives the movable screw 13 to rotate periodically in the forward and reverse directions, which drives the movable seat 12 to move up and down periodically on the movable screw 13, which in turn drives the fixed housing 17 to move up and down periodically to achieve the lifting of the fixed housing 17.

[0036] Specifically, the elastic mechanism includes a plurality of second connecting springs 23 that are elastically connected at equal intervals between the fixed housing 17 and the movable housing 18 close to each other on their side walls.

[0037] See appendix Figure 4 The elastic mechanism achieves an elastic connection between the fixed housing 17 and the movable housing 18 through the elastic force of multiple second connecting springs 23.

[0038] Specifically, a lower battery 41 is fixedly connected to the bottom of the lower T-shaped ring plate 8, and an assembly groove 7 is opened at the top of the lower T-shaped ring plate 8. A lower solar panel 11 is fixedly connected inside the assembly groove 7. An assembly frame 16 is fixedly connected to the side wall of the fixed housing 17 on both sides of the movable seat 12. An upper solar panel 22 is fixedly connected to the assembly frame 16. A second cavity 34 is opened on both sides of the third cavity 37 and the first cavity 25 inside the movable housing 18. An upper battery 24 is fixedly connected inside the second cavity 34. The lower solar panel 11 and the lower battery 41 are connected by wires, as are the second motor 14, the first motor 10, and the first IoT controller 15 and the lower battery 41. The two upper solar panels 22 are connected to the two upper batteries 24, as are the second IoT controller 36 and the ultrasonic thickness gauge 35 and the two upper batteries 24, by wires.

[0039] See appendix Figure 1-4The lower solar panel 11 and the upper solar panel 22 convert solar energy into electrical energy and transmit it to the lower battery 41 and the upper battery 24 respectively. The lower battery 41 and the upper battery 24 process the electrical energy and then supply power to the second motor 14, the first motor 10, the first IoT controller 15, the second IoT controller 36, and the ultrasonic thickness gauge 35 respectively.

[0040] Example 2

[0041] The difference between this embodiment and Embodiment 1 is that:

[0042] Specifically, couplant boxes 31 are symmetrically arranged on both sides of the ultrasonic thickness gauge 35 probe inside the first cavity 25. A moving drive mechanism is installed between the two couplant boxes 31 and the movable housing 18 to drive the two couplant boxes 31 to move in opposite directions. A valved inlet pipe 29 is fixedly connected to the top of the couplant box 31. The couplant box 31 contains couplant. An applicator sponge 30 is fixedly connected to the side of the couplant box 31 near the ultrasonic thickness gauge 35 probe. The applicator sponge 30 extends away from the probe and into the couplant box 31, where it is immersed in couplant. The elastically connected movable housing 18 and fixed housing 17 can ensure that the movable housing 18 is always in contact with the oil tank, reducing the loss of couplant in the applicator sponge 30.

[0043] See appendix Figure 4 Before the device performs real-time monitoring of the oil storage tank, the valves of the two valved inlet pipes 29 are opened, and the coupling agent is added to the two coupling agent boxes 31 through the two valved inlet pipes 29 until an appropriate amount is reached. Then, the valves of the two valved inlet pipes 29 are closed. When the device performs real-time monitoring of the oil storage tank, whenever the movable housing 18 gradually contacts the upper rotating ring plate 5, the moving drive mechanism drives the two coupling agent boxes 31 to move towards each other. The two coupling agent boxes 31 drive the two application sponges 30 to move in the same direction until the movable housing 18 contacts the upper rotating ring plate 5. The two application sponges 30 cover the ultrasonic thickness gauge 35 probe and apply the coupling agent to the ultrasonic thickness gauge 35 probe. When the movable housing 18 gradually moves away from the upper rotating ring plate 5, the two coupling agent boxes 31 reset. This process is repeated to achieve automatic application of coupling agent to the ultrasonic thickness gauge 35 probe.

[0044] Specifically, the moving drive mechanism includes two first through holes 19 symmetrically opened on the movable housing 18 and communicating with two second cavities 34 respectively, a connecting shaft 26 connected to the inside of the second cavity 34 by bearings, and two second through holes 32 symmetrically opened on the movable housing 18 and communicating with the first cavity 25 and the two second cavities 34 on both sides. A T-shaped rod 21 is provided inside the first through hole 19. The top end of the T-shaped rod 21 passes through the first through hole 19 and extends to the top of the movable housing 18. A first connecting spring is elastically connected between the top end of the movable housing 18 and the top end of the movable housing 18.

[0045] 20. The bottom end of the T-shaped rod 21 extends through the first through hole 19 into the first cavity 25 and is fixedly connected to the first toothed rod 28. A second gear 27 that meshes with the first toothed rod 28 is fixedly sleeved on the connecting shaft 26. A second toothed rod 33 that meshes with the connecting shaft 26 is provided inside the second through hole 32. The second toothed rod 33 is fixedly connected to the coupling agent box 31 on the side near the coupling agent box 31.

[0046] See appendix Figure 3-4 The moving drive mechanism achieves the following: First, the two T-shaped rods 21 abut against the upper rotating ring plate 5, causing them to move downwards, which in turn rotates the two second gears 27, causing the two second racks 33 to move closer together, thus driving the two coupling agent boxes 31 to move closer together. Second, the two T-shaped rods 21 move upwards without contacting the upper rotating ring plate 5, under the reset action of the two first connecting springs 20, causing the two second gears 27 to rotate, which in turn rotates the two second racks 33 to move further away from each other, thus driving the two coupling agent boxes 31 to move further away from each other.

[0047] Specifically, the distance between the coupling agent box 31 and the inner wall on the same side of the movable housing 18 is less than the length of the second toothed rod 33.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A real-time corrosion monitoring device for oil storage tanks, characterized in that, include: A lower T-shaped ring plate (8) is set at the bottom of the outer wall of the oil storage tank, an upper ring plate (2) is set at the top of the outer wall of the oil storage tank, and a main control computer (1) is set in the control room. The lower T-shaped ring plate (8) and the upper ring plate (2) are fitted with a locking mechanism between them and the oil storage tank. A first Internet of Things controller (15) is fixedly connected to the bottom of the lower T-shaped ring plate (8). The top of the outer wall of the lower T-shaped ring plate (8) and the bottom of the outer wall of the upper ring plate (2) are respectively connected to rotating ring plates (5) through bearings. A rotation drive mechanism for driving the two rotating ring plates (5) to rotate in the same direction is fitted between the two rotating ring plates (5) and the lower T-shaped ring plate (8). A fixed housing (17) is set between the two rotating ring plates (5). A lifting mechanism is fitted between the fixed housing (17) and the two rotating ring plates (5). The fixed housing (17) is close to The side wall of the oil storage tank is provided with a movable shell (18). An elastic mechanism is assembled between the movable shell (18) and the fixed shell (17). The movable shell (18) has a first cavity (25) and a third cavity (37) respectively opened from the side closer to the oil storage tank. The third cavity (37) is fixedly connected to a second Internet of Things controller (36). The first cavity (25) is fixedly connected to an ultrasonic thickness gauge (35) that contacts the outer wall of the oil storage tank. The rotation drive mechanism and the lifting mechanism are connected to the first Internet of Things controller (15) and the ultrasonic thickness gauge (35) is connected to the second Internet of Things controller (36) through wires. The first Internet of Things controller (15) and the second Internet of Things controller (36) are connected to the main control computer (1) through a base station. The main control computer (1) is equipped with RBI software. Inside the first cavity (25), symmetrical coupling agent boxes (31) are arranged on both sides of the ultrasonic thickness gauge (35) probe. A moving drive mechanism for driving the two coupling agent boxes (31) to move in opposite directions is assembled between the two coupling agent boxes (31) and the movable housing (18). A valve-equipped inlet pipe (29) is fixedly connected to the top of the coupling agent box (31). The coupling agent box (31) is filled with coupling agent. A sizing sponge (30) is fixedly connected to the side of the coupling agent box (31) near the ultrasonic thickness gauge (35) probe. The sizing sponge (30) extends away from the probe side into the coupling agent box (31) and is immersed in the coupling agent. The moving drive mechanism includes two first through holes (19) symmetrically opened on the movable housing (18) and communicating with two second cavities (34) respectively; a connecting shaft (26) connected to the inside of the second cavity (34) by bearings; and two second through holes (32) symmetrically opened on the movable housing (18) and communicating with the first cavity (25) and the two second cavities (34) on both sides. A T-shaped rod (21) is provided inside the first through hole (19), and the top end of the T-shaped rod (21) extends through the first through hole (19) to the movable housing (18). A first connecting spring (20) is elastically connected between the top of the square and the top of the movable housing (18). The bottom end of the T-shaped rod (21) extends through the first through hole (19) into the first cavity (25) and is fixedly connected to the first toothed rod (28). A second gear (27) that meshes with the first toothed rod (28) is fixedly sleeved on the connecting shaft (26). A second toothed rod (33) that meshes with the connecting shaft (26) is provided inside the second through hole (32). The second toothed rod (33) is fixedly connected to the coupling agent box (31) on the side near the coupling agent box (31).

2. The real-time corrosion monitoring device for oil storage tanks according to claim 1, characterized in that: The locking mechanism includes multiple threaded holes (39) evenly spaced along the circumference on the lower T-shaped ring plate (8) and the upper ring plate (2). An adjusting screw (38) is threaded inside the threaded hole (39). The adjusting screw (38) extends through the lower T-shaped ring plate (8) to the outside on the side away from the lower T-shaped ring plate (8), and extends through the lower T-shaped ring plate (8) to the inside of the lower T-shaped ring plate (8) on the side close to the lower T-shaped ring plate (8) and is connected to a locking plate (40) through a bearing.

3. The real-time corrosion monitoring device for oil storage tanks according to claim 1, characterized in that: The rotation drive mechanism includes a second motor (14) fixed to the bottom end of the lower T-shaped ring plate (8), a fixing plate (3) fixed to the top of the outer wall of the upper ring plate (2), and two external toothed rings (9) fixedly sleeved on the outer walls of the two rotating ring plates (5). A connecting rod (4) is provided between the lower T-shaped ring plate (8) and the fixing plate (3). The bottom end of the connecting rod (4) is connected to the output shaft of the second motor (14) through a coupling, and the top end of the connecting rod (4) is connected to the fixing plate (3) through a bearing. Two first gears (6) are fixedly sleeved on the connecting rod (4) and respectively mesh with the two external toothed rings (9). The second motor (14) is connected to the first Internet of Things controller (15) through a wire.

4. The real-time corrosion monitoring device for oil storage tanks according to claim 3, characterized in that: The lifting mechanism includes a first motor (10) fixed to the bottom end of the lower rotating ring plate (5) and a movable screw (13) disposed between the two rotating ring plates (5). The bottom end of the movable screw (13) is connected to the output shaft of the first motor (10) through a coupling, and the top end of the movable screw (13) is connected to the upper rotating ring plate (5) through a bearing. A movable seat (12) is connected to the movable screw (13) through a transmission nut. The movable seat (12) is fixed to the fixed housing (17). The first motor (10) and the first Internet of Things controller (15) are connected by a wire.

5. The real-time corrosion monitoring device for oil storage tanks according to claim 1, characterized in that: The elastic mechanism includes a plurality of second connecting springs (23) that are elastically connected at equal intervals between the fixed housing (17) and the movable housing (18) close to each other on their side walls.

6. The real-time corrosion monitoring device for oil storage tanks according to claim 4, characterized in that: The lower T-shaped ring plate (8) is fixedly connected to the bottom end of the lower battery (41), and the top end of the lower T-shaped ring plate (8) is provided with an assembly groove (7). The lower solar panel (11) is fixedly connected inside the assembly groove (7). The side wall of the fixed housing (17) is fixedly connected to the two sides of the movable seat (12) with assembly frames (16). The upper solar panel (22) is fixedly connected to the assembly frame (16). The movable housing (18) is provided with a second battery (41) on both sides of the third cavity (37) and the first cavity (25). The cavity (34) has an upper battery (24) fixed inside. The lower solar panel (11) is connected to the lower battery (41) and the second motor (14), the first motor (10) and the first IoT controller (15) are connected to the lower battery (41) by wires. The two upper solar panels (22) are connected to the two upper batteries (24) respectively and the second IoT controller (36) and the ultrasonic thickness gauge (35) are connected to the two upper batteries (24) by wires.

7. The real-time corrosion monitoring device for oil storage tanks according to claim 6, characterized in that: The distance between the coupling agent box (31) and the inner wall on the same side of the movable shell (18) is less than the length of the second toothed rod (33).

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