Maintenance system and automatic scanning device for coke tower

Abstract

The utility model relates to the field of petroleum refining equipment, and provides an overhauling system and an automatic scanning device for a coke tower, the automatic scanning device comprises a drill rod (10), a connecting assembly and a scanning module, the drill rod is arranged to be capable of penetrating through the center of the top of the coke tower to extend into an inner cavity of the coke tower (9); the connecting assembly is connected to the part, extending into the coke tower, of the drill rod and is provided with a fixed bracket (4) capable of being adjusted; the scanning module is connected to the fixing support, and the drill rod can abut against the scanning module or be separated from the scanning module by adjusting the fixing support. The distance between the scanning module and the head of the drill rod can be adjusted through the fixing support, so that the head of the drill rod abuts against the upper portion of the scanning module, when air convection exists in the tower, the drill rod and the scanning module which abut against each other can better resist transverse air convection, shaking caused by air convection is reduced, and the scanning module can conduct scanning stably.

Description

Technical Field

[0001] The utility model relates to the field of petroleum refining equipment, and particularly relates to an automatic scanning device for a coke drum and an overhaul system using the automatic scanning device. Background Art

[0002] The coke drum is a reactor of a delayed coking unit in an oil refinery, and its long-term safe and stable operation is the premise and foundation for an oil refining enterprise to obtain high benefits. There are huge cyclic alternating temperatures and cyclic loads in the working environment of the coke drum. After operating for several years, the cylinder body is prone to bulge and deform, which further causes the tower body to tilt, making it impossible to remove coke from the coke drum, bringing great potential safety hazards to the normal operation of the device.

[0003] The three-dimensional laser scanning technology adopts a method combining photography and measurement, which can efficiently detect the deformation amount of the coke drum tower body without contact, and output a three-dimensional graph based on the obtained data to realize the visualization of the deformation degree of the tower body, thereby providing data support for the internal inspection and repair work of the coke drum.

[0004] For existing laser scanners, in the working process of the coke drum, the three-dimensional laser scanner cannot automatically enter the tower. It can only be scanned by an operator holding the scanner at the upper tower opening of the coke drum. The scanning range is small and the detection accuracy is low. When the coke drum is shut down for maintenance and internal inspection, the operator can enter the tower with a laser scanner by climbing a scaffolding or taking relevant auxiliary facilities, but there are still problems of great operation difficulty and high safety risk, and manual operation is prone to errors, resulting in scanning errors. How to automatically place the scanner into the tower for in-depth scanning of the inside of the coke drum while avoiding the fall of the scanner due to reasons such as air convection inside the tower is an urgent problem to be solved.

[0005] Chinese Utility Model Patent CN 219347674 U discloses a three-dimensional laser automatic scanning auxiliary device for a coke drum, which realizes the automatic entry of a laser scanning device into the tower for scanning operations through a drill pipe and a scanning mechanism hoisted on the drill pipe. The technical solution of the prior art can automatically scan the inside of the tower, but it is easily affected by air convection inside the coke drum in actual use, and even falls off, resulting in the fall of the scanner. Therefore, it is necessary to propose an automatic scanning device that can avoid air convection inside the tower and other external environmental influences. Summary of the Invention

[0006] The purpose of the utility model is to overcome the technical problems in the prior art that the scanner is easily affected by the air convection in the tower, the scanning effect is poor, and even the scanner falls off. An automatic scanning device for use in a coke tower and a maintenance system using the automatic scanning device are provided. The automatic scanning device can reduce the influence of the air convection in the tower on the equipment, reduce the scanning problems caused by the shaking of the scanning device, and prevent the scanner from falling off and falling into the coke tower.

[0007] In order to achieve the above object, the utility model provides an automatic scanning device for use in a coke drum, comprising:

[0008] The drill rod is arranged to pass through the center of the top of the coke drum and extend into the inner cavity of the coke drum.

[0009] A connecting assembly is connected to the portion of the drill pipe extending into the coke drum and has an adjustable fixing bracket.

[0010] The scanning module is connected to the fixing bracket, and the fixing bracket can be adjusted so that the drill rod abuts against the scanning module or is spaced from the scanning module.

[0011] Preferably, the portion of the drill rod extending into the coke drum is formed with an annular mounting groove, and the connecting assembly includes an upper connecting plate formed with a U-shaped groove and a pressure plate connected to the upper connecting plate to close the open end of the U-shaped groove, so as to allow the drill rod to extend through the U-shaped groove and enable the upper connecting plate and the pressure plate to be clamped into the mounting groove.

[0012] Preferably, the fixing bracket includes a plurality of connecting rods extending vertically and respectively connected to the upper connecting plate and the scanning module, and adjusting nuts screwed to the connecting rods, so that the spacing between the scanning module and the drill rod can be adjusted by the adjusting nuts.

[0013] Preferably, the scanning module comprises a control box, a drive box, a lower connecting rod and a scanner connected in sequence, the control box is connected to a fixed bracket, and the lower connecting rod and the scanner can be driven by the control box to rotate in the inner cavity of the coke drum.

[0014] Preferably, the scanner is a three-dimensional laser scanner.

[0015] Preferably, the utility model further comprises a hydraulic decoking system whose signal is connected to a control box, and the hydraulic decoking system is configured to control the control box to output driving power and drive the scanner to rotate through the driving box.

[0016] Preferably, a motor is provided in the control box, and a reducer is provided in the drive box and is transmission-connected between the motor and the lower connecting rod.

[0017] Preferably, the drill rod, the connecting assembly and the scanning module are arranged coaxially with each other.

[0018] Preferably, the scanning device of the present utility model further includes a hydraulic descaling system located outside the coke drum, and the hydraulic descaling system is configured to be able to control the lifting of the drill pipe relative to the coke drum.

[0019] Preferably, the present utility model also provides an overhaul system for a coke drum, which uses the automatic scanning device provided above in the present utility model.

[0020] Through the adjustable fixing bracket in the above technical solution, the distance between the scanning module and the head of the drill pipe can be adjusted, so that the head of the drill pipe abuts against the upper part of the scanning module. In this way, when there is air convection in the tower, the abutting drill pipe and scanning module can better resist the lateral air convection, reduce the shaking caused by the air convection, and ensure that the scanning module can stably perform scanning. Description of the Drawings

[0021] Figure 1 is an axonometric structural schematic diagram of removing the drill bit in an embodiment of the present utility model;

[0022] Figure 2 is a working schematic diagram of an embodiment of the present utility model;

[0023] Figure 3 is an overall structural schematic diagram of an embodiment of the present utility model;

[0024] Figure 4 is an overall structural schematic diagram of removing the scanner in an embodiment of the present utility model.

[0025] Description of the Reference Numerals

[0026] 1, pressure plate; 2, upper connecting plate; 3, adjusting nut; 4, fixing bracket; 5, control box; 6, drive box; 7, lower connecting rod; 8, scanner; 9, coke drum; 10, drill pipe; 11, hydraulic descaling system. Detailed Embodiments

[0027] In the present utility model, unless otherwise stated, the directional terms such as "upper, lower, inner, outer" included in the terms only represent the direction of the terms in the normal use state, or the common name understood by those skilled in the art, and should not be regarded as a limitation to the terms.

[0028] As Figure 1 and Figure 3 shown, the present utility model provides an automatic scanning device for inside a coke drum, including:

[0029] A drill pipe 10, and the drill pipe 10 is configured to be able to pass through the center of the top of the coke drum 9 and extend into the inner cavity of the coke drum 9.

[0030] A connecting component, which is connected to a part of the drill pipe 10 extending into the coke drum 9 and has a fixed bracket 4 that can be adjusted; and,

[0031] A scanning module, which is connected to the fixed bracket 4 and can make the drill pipe 10 abut against the scanning module or be separated from the scanning module by adjusting the fixed bracket 4.

[0032] Through the drill pipe 10 that can be lifted and lowered in the coke drum 9, it is ensured that the scanning module (such as the scanner 8) can enter the interior of the coke drum 9 and operate at various heights, thereby generating complete three-dimensional data of the inner cavity of the coke drum 9. At the same time, it also eliminates the errors caused by technicians descending into the tower for manual operations and avoids the personal danger existing in the measurement operations. Through the fixed bracket connected between the scanning module and the drill pipe, the distance between the scanning module and the head of the drill pipe can be adjusted, so that the head of the drill pipe abuts against the upper part of the scanning module. In this way, when there is air convection in the tower, the abutting drill pipe and scanning module can better resist the lateral air convection, reduce the shaking caused by the air convection, and ensure that the scanning module can stably perform scanning.

[0033] Such as Figure 3 and Figure 4 As shown, in a preferred embodiment, a circular installation groove may be formed in a part of the drill pipe 10 extending into the coke drum 9. The connecting component includes an upper connecting plate 2 formed with a U-shaped groove and a pressing plate 1 connected to the upper connecting plate 2 to close the open end of the U-shaped groove, so as to allow the drill pipe 10 to extend through the U-shaped groove and make the upper connecting plate 2 and the pressing plate 1 be clamped into the installation groove.

[0034] Through the clamping of the circular installation groove at the head of the drill pipe 10 and the connecting part, the scanning module can cope with air convection from different directions without loosening or falling off relative to the drill pipe. At the same time, through the groove with a certain depth and the upper connecting plate 2 that cooperates with it, when affected by the convection, the connection part between the entire upper connecting plate 2 and the installation groove is stressed and not easily deformed. The complete fit of the groove also ensures that the upper connecting plate 2 can remain stable when stressed, thus ensuring that the scanning module will not shake due to air convection in the tower. Through the cooperation of the pressing plate 1 and the upper connecting plate 2, it can be ensured that both of them are clamped tightly with the installation groove at the head of the drill pipe 10. At the same time, by using the cooperation method of the pressing plate 1 and the upper connecting plate 2, the disassembly and assembly between the connecting part and the drill pipe 10 can be facilitated, so that the utility model is convenient for maintenance and replacement. The utility model only needs to change the sizes of the U-shaped plate and the pressing plate 1 to match drill pipes 10 of different specifications to cope with different working conditions, and can be widely applied to the scanning operation in the coke drum 9 at low cost.

[0035] Further preferably, such as Figure 3As shown, the sizes and thicknesses of the upper connecting plate 2 and the pressing plate 1 are consistent with the sizes and depths of the mounting grooves on the head of the drill pipe 10, so that the U-shaped plate and the pressing plate 1 can just fit with the mounting grooves on the head of the drill pipe 10. The U-shaped plate and the pressing plate 1 fit exactly with the mounting grooves on the head of the drill pipe 10 without gaps, which can ensure that there will be no shaking of the connecting part and the scanning module caused by incomplete fitting after installation, and reduce the influence of air convection in the tower on the scanning operation.

[0036] Preferably, as Figure 3 shown, the fixing bracket 4 includes a plurality of connecting rods extending vertically and respectively connected to the upper connecting plate 2 and the scanning module, and adjusting nuts 3 screwed to the connecting rods, so as to be able to adjust the distance between the scanning module and the drill pipe 10 through the adjusting nuts 3. The length of the fixing bracket 4 can be adjusted through the adjusting nuts 3 according to the air convection situation in the tower and the influence of the scanning results obtained by the present invention. Further, it can be adjusted until the scanning module abuts against the bottom of the drill pipe 10, and the scanning module is tightened to abut against the bottom of the drill pipe 10, so as to reduce the shaking between the scanning module and the drill pipe 10. By using the adjusting nuts 3, the process of adjusting the fixing bracket 4 is convenient and fast, and the connection between the fixing bracket 4 and the scanning module is ensured to be firm.

[0037] Preferably, as Figure 3 shown, the scanning module includes a control box 5, a drive box 6, a lower connecting rod 7 and a scanner 8 connected in sequence. The control box 5 is connected to the fixing bracket 4, the drive box 6 is connected to the control box 5, and the lower connecting rod 7 and the scanner 8 can be driven by the control box 5 and transmitted by the drive box 6 to rotate in the inner cavity of the coke tower 9.

[0038] Preferably, the scanner 8 is a three-dimensional laser scanner 8. The three-dimensional laser scanner 8 can generate three-dimensional scan data and generate a visualized three-dimensional model, so as to better help technicians judge how to carry out the maintenance work of the coke tower 9.

[0039] Preferably, as Figure 2 shown, the present invention further includes a hydraulic decoking system 11 signal-connected to the control box 5. The hydraulic decoking system 11 is set to be able to control the control box 5 to output driving power, and drive the scanner 8 to rotate through the drive box 6. By controlling the control box 5, the start and stop of the motor can be controlled, and thus the rotation of the connecting part can be controlled, so as to control the rotation of the scanner during the scanning operation.

[0040] Preferably, a motor is provided in the control box 5, and a speed reducer drivingly connected between the motor and the lower connecting rod 7 is provided in the driving box 6. The motor can drive the driving box 6 connected to the control box 5 to rotate. By setting the specifications of the speed reducer in the driving box 6, the rotation speed of the lower connecting rod 7 driven by the driving box 6 can be selected, so as to select the scanning speed of the present invention during the scanning operation, enabling the present invention to meet different scanning requirements. The driving box 6 can drive the lower connecting rod 7 to rotate 360 degrees, so as to scan the entire inner cavity area of the coke drum 9 at a specific height and obtain complete scanning data.

[0041] Preferably, as Figure 3 shown, the drill pipe 10, the connecting assembly and the scanning module are coaxially arranged with each other. By keeping the centers of the components in the same position, the centers of gravity of the components can also be in the same position, reducing the influence of air convection in the tower. At the same time, the axisymmetric structure can also ensure the stability of the present invention when moving up and down, and will not tilt due to the influence of air convection on one side being greater due to the existence of an asymmetric structure, thus affecting the progress of the scanning operation.

[0042] Preferably, as Figure 2 shown, the hydraulic decoking system 11 is arranged outside the coke drum 9 and is configured to be able to control the lifting and lowering of the drill pipe 10 relative to the coke drum 9. By connecting to the hydraulic decoking system 11 inside the coke drum 9, the automatic lifting and lowering of the drill pipe 10 and the start and stop of the control box 5 can be remotely controlled, so as to automatically control the progress of the scanning operation, enabling one person to complete the scanning operation, saving labor costs while avoiding errors during the scanning process caused by manual operation, and also greatly reducing the personal danger of the scanning operation.

[0043] Preferably, the present invention further includes an overhaul system using the above automatic scanning device, and the overhaul system can use the above automatic scanning device to automatically perform scanning operations.

[0044] More preferably, during the scanning operation, first control the lifting and lowering of the drill pipe 10 through the hydraulic decoking system 11 to make the head of the drill pipe 10 enter the coke drum 9. When the scanning module descends to the designated position, control the driving box 6 to drive the scanning module to rotate in the tower through the hydraulic decoking system 11. The scanner 8 rotates one circle to complete one scan, and repeat this process until all the inner walls of the coke drum 9 are scanned, and then one scan is completed. After the scanning is completed, lift the automatic scanning device to the outside of the coke drum 9 by controlling the drill pipe 10.

[0045] More preferably, after the scanning process in this embodiment ends, the scanning result is uploaded to the hydraulic decoking system 11. The hydraulic decoking system 11 can also analyze the severely deformed parts of the tower body based on the scanning result, and correspondingly adjust the lifting of the drill pipe 10 to scan the severely deformed parts again to obtain accurate data. By setting a given program in the hydraulic decoking system 11, the hydraulic decoking system 11 can be enabled to control the components connected thereto to automatically complete the scanning and use a suitable scanning program according to the inner cavity of different coke drums 9 to ensure the scanning effect.

[0046] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept scope of the present invention, various simple modifications can be made to the technical solutions of the present invention, including any suitable combination of each specific technical feature. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. An automatic scanning device for use in a coke drum, characterized in that: include: A drill rod (10), wherein the drill rod (10) is configured to pass through the center of the top of the coke drum (9) and extend into the inner cavity of the coke drum (9); a connecting assembly connected to the portion of the drill pipe (10) extending into the coke drum (9) and having an adjustable fixing bracket (4); and, A scanning module is connected to the fixing bracket (4), and the fixing bracket (4) can be adjusted so that the drill rod (10) abuts against the scanning module or is spaced from the scanning module.

2. The automatic scanning device for use in a coke drum according to claim 1, characterized in that: The portion of the drill rod (10) extending into the coke drum (9) is formed with an annular mounting groove, and the connecting assembly comprises an upper connecting plate (2) formed with a U-shaped groove and a pressing plate (1) connected to the upper connecting plate (2) to close the open end of the U-shaped groove, so as to allow the drill rod (10) to extend through the U-shaped groove and enable the upper connecting plate (2) and the pressing plate (1) to be snap-fitted into the mounting groove.

3. The automatic scanning device for use in a coke drum according to claim 2, characterized in that: The fixed bracket (4) comprises a plurality of connecting rods extending vertically and respectively connected to the upper connecting plate (2) and the scanning module, and an adjusting nut (3) screwed to the connecting rods, so that the spacing between the scanning module and the drill rod (10) can be adjusted by the adjusting nut (3).

4. The automatic scanning device for use in a coke drum according to claim 1, characterized in that: The scanning module comprises a control box (5), a drive box (6), a lower connecting rod (7) and a scanner (8) connected in sequence, wherein the control box (5) is connected to the fixed bracket (4), and the lower connecting rod (7) and the scanner (8) can be driven by the control box (5) to rotate in the inner cavity of the coke drum (9).

5. The automatic scanning device for use in a coke drum according to claim 4, characterized in that: The scanner (8) is a three-dimensional laser scanner.

6. The automatic scanning device for use in a coke drum according to claim 4, characterized in that: It also includes a hydraulic decoking system (11) whose signal is connected to the control box (5), and the hydraulic decoking system (11) is configured to control the control box (5) to output driving power and drive the scanner (8) to rotate through the driving box (6).

7. The automatic scanning device for use in a coke drum according to claim 4, characterized in that: The control box (5) is provided with a motor, and the drive box (6) is provided with a reducer that is transmission-connected between the motor and the lower connecting rod (7).

8. The automatic scanning device for use in a coke drum according to claim 1, characterized in that: The drill rod (10), the connecting assembly and the scanning module are coaxially arranged with each other.

9. The automatic scanning device for use in a coke drum according to claim 1, characterized in that: It also includes a hydraulic decoking system (11) located outside the coke drum (9), and the hydraulic decoking system (11) is configured to control the lifting and lowering of the drill pipe (10) relative to the coke drum (9).

10. A maintenance system for a coke drum, characterized in that: Comprising an automatic scanning device according to any one of claims 1 to 9.

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