Atmospheric storage tank surface crater repairing equipment

Abstract

The utility model relates to the technical field of normal-pressure storage tank repairing, and discloses normal-pressure storage tank surface crater repairing equipment which comprises a fixing ring, four sets of first suction cups are fixedly installed at the rear end of the fixing ring, and the left side and the right side of the fixing ring are each fixedly provided with a set of handrails. The device comprises a fixing ring, the left side and the right side of the front end of the fixing ring are each fixedly provided with a set of guide columns, guide grooves are formed in the guide columns, limiting sliding grooves are formed in the inner walls of the upper ends and the lower ends of the guide grooves, and an adsorption part is arranged in the middle of the front end of the fixing ring and comprises a moving disc. The movable disc is movably installed in the middle of the front end of the fixed ring, and by installing the fixed ring, the guide column, the guide groove, the adsorption part, the movable disc, a screw hole, a storage groove, a threaded rod, a handle, a second suction cup, a sliding plate and other devices, the device has the beneficial effects that arc crater repairing operation can be conveniently conducted on the surface of the normal-pressure storage tank, and the auxiliary effect can be achieved when welding repairing is conducted on arc craters.

Description

Technical Field

[0001] The utility model relates to the technical field of atmospheric pressure storage tank repair, in particular to an arc pit repair device on the surface of an atmospheric pressure storage tank. Background Art

[0002] Atmospheric pressure storage tanks refer to steel welded storage tanks with a design pressure of less than or equal to 1 / 3 atmospheric pressure, built on the ground, and used to store non-artificially refrigerated, non-highly toxic liquid media such as petroleum and chemicals. Storage tanks are widely used storage equipment in petrochemical production. During use, atmospheric pressure storage tanks are prone to deflation due to temperature changes, excessive emptying, insufficient tank structure strength, etc., resulting in arc pits on the surface of atmospheric pressure storage tanks. When arc pits appear on the surface of atmospheric pressure storage tanks in a small area within an acceptable range, they can be repaired without direct replacement;

[0003] Common methods for repairing arc pits on atmospheric pressure storage tanks include hammering, chemical treatment, and welding. Welding repair is a repair method for larger and deeper pits. Welding tools usually change the shape of the recessed area to make the weld flush with the plate surface. However, atmospheric pressure storage tanks are usually large in size, making it inconvenient to repair arc pits on the tank surface. Usually, direct repair work cannot be performed, but requires the assistance of certain tools. Therefore, when performing welding repairs on arc pits on the tank surface, a repair device is required to assist.

[0004] Therefore, a surface crater repairing device for atmospheric pressure storage tanks is proposed. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the utility model provides an arc crater repair device on the surface of an atmospheric pressure storage tank, which is convenient for arc crater repair operations on the surface of the atmospheric pressure storage tank and can play an auxiliary role in welding repair of arc craters, thus solving the problem of inconvenient welding repair of atmospheric pressure storage tanks.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a surface crater repair device for an atmospheric pressure storage tank, comprising a fixed ring, four sets of first suction cups fixedly mounted on the rear end of the fixed ring, a set of handrails fixedly mounted on the left and right sides of the fixed ring, and a set of guide posts fixedly mounted on the left and right sides of the front end of the fixed ring, wherein guide grooves are formed inside the guide posts, and limit slide grooves are formed on the inner walls of the upper and lower ends of the guide grooves;

[0007] An adsorption component is provided at the middle of the front end of the fixed ring, and the adsorption component includes a movable disk, which is movably installed at the middle of the front end of the fixed ring. Receiving grooves are provided on both sides of the interior of the movable disk, and slides are movably installed inside the two groups of the receiving grooves. A second spring is fixedly installed on the slide near the middle of the movable disk.

[0008] Preferably, a screw hole is opened at the center of the movable plate, a threaded rod is movably installed inside the screw hole, a handle is fixedly installed at the front end of the threaded rod, and a second suction cup is fixedly installed at the rear end of the threaded rod.

[0009] Preferably, the slides on the left and right sides of the movable disk are movably installed inside the guide column, the upper and lower side walls of the slide are provided with sliders that are engaged with the limiting sliding groove, and the front end of the slide is fixedly installed with a third spring, and the third spring is located inside the guide groove.

[0010] Preferably, the diameter of the movable disk is smaller than the inner diameter of the fixed ring, and the movable disk can move back and forth at the front end of the fixed ring through the slide plate and the guide column.

[0011] Preferably, the fixing ring is composed of four groups of fan-shaped plates, the four groups of fan-shaped plates are in a circular shape, and the four groups of fan-shaped plates are each provided with an expansion slot inside. The four groups of the first suction cups are installed at the rear ends of the upper and lower groups of fan-shaped plates, and the two groups of the guide columns are installed at the front ends of the left and right groups of fan-shaped plates.

[0012] Preferably, a group of expansion plates are movably installed inside every two groups of the fan-shaped plates, and there are four groups of expansion plates in total. A first spring is fixedly connected between every two groups of expansion plates.

[0013] Preferably, the fan-shaped plate can be expanded outwards through an expansion plate, and the fan-shaped plate drives the two groups of guide pillars to move to both sides when expanding.

[0014] Preferably, when the guide pillar expands and moves outward, the slide can be pulled out of the receiving groove through the limiting sliding groove and the sliding block on the side of the slide.

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

[0016] 1. This kind of arc crater repair equipment on the surface of atmospheric pressure storage tanks is convenient for arc crater repair operations on the surface of atmospheric pressure storage tanks by installing fixing rings, guide columns, guide grooves, adsorption components, movable plates, screw holes, receiving grooves, threaded rods, handles, second suction cups, slides and other devices, and can play an auxiliary role in welding repairs of arc craters.

[0017] 2. This atmospheric pressure storage tank surface arc crater repair equipment can adjust the size of the structure according to the size of the arc crater on the atmospheric pressure storage tank surface by installing a fixing ring, a fan-shaped plate, an expansion slot, an expansion plate, a first spring and other devices, thereby achieving a stronger adaptability. At the same time, it also further enhances the auxiliary role of this device in the atmospheric pressure storage tank arc crater welding repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the arc pit repair equipment of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the fixing ring of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal planar structure of the fixing ring of the utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the adsorption component of the utility model;

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the adsorption component of the utility model.

[0024] Description of reference numerals:

[0025] 1. Fixed ring; 11. Fan-shaped plate; 12. Expansion slot; 13. Expansion plate; 14. First spring; 15. Handle; 16. First suction cup; 17. Guide column; 18. Guide slot; 19. Limiting slide; 2. Adsorption component; 21. Moving plate; 22. Screw hole; 23. Storage slot; 24. Threaded rod; 25. Handle; 26. Second suction cup; 27. Slide plate; 28. Second spring; 29. ​​Third spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 5 , the utility model provides a technical solution:

[0028] A surface crater repair device for an atmospheric pressure storage tank comprises a fixed ring 1, four groups of first suction cups 16 are fixedly mounted on the rear end of the fixed ring 1, a group of handrails 15 are fixedly mounted on the left and right sides of the fixed ring 1, a group of guide posts 17 are fixedly mounted on the left and right sides of the front end of the fixed ring 1, a guide groove 18 is provided inside the guide post 17, and limiting slide grooves 19 are provided on the upper and lower inner walls of the guide groove 18, an adsorption component 2 is provided at the middle part of the front end of the fixed ring 1, the adsorption component 2 comprises a movable disk 21, the movable disk 21 is movably mounted at the middle position of the front end of the fixed ring 1, receiving grooves 23 are provided on both sides of the interior of the movable disk 21, and slide plates 27 are movably mounted inside the two groups of receiving grooves 23, and a second spring 28 is fixedly mounted on the slide plate 27 near the middle of the movable disk 21;

[0029] A screw hole 22 is provided at the center of the movable disk 21, and a threaded rod 24 is movably installed inside the screw hole 22. A handle 25 is fixedly installed at the front end of the threaded rod 24, and a second suction cup 26 is fixedly installed at the rear end of the threaded rod 24. The slides 27 on the left and right sides of the movable disk 21 are movably installed inside the guide column 17, and the upper and lower end side walls of the slide 27 are provided with sliders that are engaged with the limiting slide groove 19. The front end of the slide 27 is fixedly installed with a third spring 29, and the third spring 29 is located inside the guide groove 18. The diameter of the movable disk 21 is smaller than the inner diameter of the fixed ring 1, and the movable disk 21 can move back and forth at the front end of the fixed ring 1 through the slide 27 and the guide column 17.

[0030] By adopting the above technical solution, when in use, first support the fixing ring 1 through the handrail 15, and then adsorb the fixing ring 1 on the surface of the atmospheric pressure storage tank through the four groups of first suction cups 16 at the rear end. When fixing the fixing ring 1, it is necessary to ensure that the arc pit on the surface of the atmospheric pressure storage tank is at the center of the fixing ring 1. When performing welding repair, if it is necessary to cut the concave plate, first rotate the second suction cup 26 through the handle 25 to make the second suction cup 26 at the rear end of the second suction cup 26 adsorb on the concave plate, and then cut. After cutting, directly pull the movable disk 21 forward through the handle 25, and the movable disk 21 moves toward the front end through the slide plate 27 and the guide column 17 on the side. When the slide plate 27 moves forward, The three springs 29 are in a compressed state, so that the cut plate can be removed. At this time, the plate to be welded is fixed on the second suction cup 26, and the handle 25 is released. The pressure of the third spring 29 is released to push the slide plate 27 back to its original position, so that the movable disk 21 is reset. At this time, the plate to be welded is just located in the slot formed after cutting, and is fixed by the adsorption component 2. The repair personnel can directly weld it without supporting it with their hands. After welding, the first suction cup 16 is directly pried off from the surface of the atmospheric pressure storage tank and the device is removed. Through the above structural design, the device is very convenient to use and plays a good auxiliary role in welding repair of arc pits in atmospheric pressure storage tanks.

[0031] Specifically, such as Figures 1 to 3 As shown, the fixing ring 1 is composed of four groups of fan-shaped plates 11, and the four groups of fan-shaped plates 11 are annular. The four groups of fan-shaped plates 11 are each provided with an expansion slot 12 inside. The four groups of the first suction cups 16 are installed at the rear ends of the upper and lower groups of fan-shaped plates 11, and the two groups of the guide pillars 17 are installed at the front ends of the left and right groups of fan-shaped plates 11. A group of expansion plates 13 are movably installed inside each two groups of the fan-shaped plates 11. There are four groups of expansion plates 13 in total, and a first spring 14 is fixedly connected between each two groups of the expansion plates 13. The fan-shaped plates 11 can expand outward through the expansion plates 13. When the fan-shaped plates 11 expand, they drive the two groups of guide pillars 17 to move to both sides. When the guide pillars 17 expand outward, the slide 27 can be pulled out of the storage slot 23 through the limiting slide groove 19 and the slider on the side of the slide 27.

[0032] By adopting the above technical solution, the arc pits on the surface of the atmospheric pressure storage tank are of different sizes. The fixing ring 1 is composed of four groups of sector plates 11, and an expansion plate 13 is set at the connection of each group of sector plates 11. Therefore, when using the fixing ring 1, the size of the fixing ring 1 can be adjusted according to the size of the arc pit on the surface of the atmospheric pressure storage tank. When adjusting the size of the fixing ring 1, it is directly pulled to both ends through the handles 15 on both sides. The fixing ring 1 is expanded through the sector plates 11 and the expansion plate 13. Since a first spring 14 is set at the connection of the expansion plate 13, the fixing ring 1 will automatically retract after expansion without the action of external force. The front end of the fixing ring 1 will automatically retract when the fixing ring 1 expands. The guide post 17 also moves accordingly. When the guide post 17 moves, the slide 27 can be driven to move accordingly through the limiting slide groove 19 opened on the inner wall of the guide groove 18 and the slider at the side end of the slide 27. The slide 27 is pulled out from the storage groove 23. At this time, the movable plate 21 may not be in the center of the fixed ring 1. The position of the movable plate 21 can be adjusted left and right according to actual use requirements. Through the above structural design, the scope of application of the present device is improved. The size of the structure can be adjusted according to the size of the arc pit on the surface of the atmospheric pressure storage tank to achieve a stronger adaptability. At the same time, it also further enhances the auxiliary role of the present device in the welding repair of the arc pit of the atmospheric pressure storage tank.

[0033] Working principle: When in use, fix the fixing ring 1 around the arc pit on the surface of the atmospheric pressure storage tank through the first suction cup 16. When fixing the fixing ring 1, the size of the fixing ring 1 can be adjusted according to the size of the arc pit on the surface of the atmospheric pressure storage tank. When adjusting the fixing ring 1, simply pull the fixing ring 1 to both ends through the handles 15 on both sides. The fixing ring 1 is composed of four groups of sector plates 11, and the interior of each two groups of sector plates 11 is installed with an expansion plate 13, so the fixing ring 1 can be adjusted. Rotate the threaded rod 24 through the handle 25 to make the second suction cup 26 at the rear end of the threaded rod 24 adsorb on the arc pit plate on the surface of the atmospheric pressure storage tank. At this time, the arc pit plate can be cut. After cutting, Pull the handle 25 forward directly to separate the cut plate from the atmospheric pressure storage tank, then fix the plate to be welded on the second suction cup 26, release the handle 25, and the pressure of the third spring 29 will be released to push the slide plate 27 back to its original position, so that the movable disk 21 is reset. At this time, the plate to be welded is just located in the slot formed after cutting. After the welding work is completed, pry the first suction cup 16 and the second suction cup 26 from the surface of the atmospheric pressure storage tank, and remove the device from the surface of the atmospheric pressure storage tank. After the atmospheric pressure storage tank is removed, the fixing ring 1 is automatically reset due to the first spring 14 installed between each group of expansion plates 13. After the fixing ring 1 is reset, the slide plate 27 is also reset by the second spring 28.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An arc pit repair device for a normal pressure storage tank surface, comprising a fixing ring (1), characterized in that: Four groups of first suction cups (16) are fixedly mounted on the rear end of the fixing ring (1), a group of handrails (15) are fixedly mounted on the left and right sides of the fixing ring (1), a group of guide pillars (17) are fixedly mounted on the left and right sides of the front end of the fixing ring (1), a guide groove (18) is provided inside the guide pillar (17), and the inner walls of the upper and lower ends of the guide groove (18) are both provided with limit sliding grooves (19); An adsorption component (2) is arranged at the middle of the front end of the fixed ring (1), and the adsorption component (2) comprises a movable disk (21), and the movable disk (21) is movably mounted at the middle of the front end of the fixed ring (1), and receiving grooves (23) are provided on both sides of the inside of the movable disk (21), and slide plates (27) are movably mounted inside the two groups of the receiving grooves (23), and a second spring (28) is fixedly mounted on the slide plate (27) near the middle of the movable disk (21).

2. The surface crater repair equipment for atmospheric pressure storage tanks according to claim 1 is characterized by: A screw hole (22) is provided at the center of the movable plate (21), a threaded rod (24) is movably installed inside the screw hole (22), a handle (25) is fixedly installed at the front end of the threaded rod (24), and a second suction cup (26) is fixedly installed at the rear end of the threaded rod (24).

3. The surface crater repair equipment for atmospheric pressure storage tanks according to claim 2 is characterized in that: The slide plates (27) on the left and right sides of the movable plate (21) are movably mounted inside the guide pillar (17); the upper and lower side walls of the slide plates (27) are provided with sliders that are engaged with the limiting slide grooves (19); a third spring (29) is fixedly mounted at the front end of the slide plates (27); and the third spring (29) is located inside the guide groove (18).

4. The surface crater repair equipment for atmospheric pressure storage tanks according to claim 2 is characterized in that: The diameter of the movable plate (21) is smaller than the inner diameter of the fixed ring (1), and the movable plate (21) can move forward and backward at the front end of the fixed ring (1) through the slide plate (27) and the guide column (17).

5. The surface crater repair equipment for atmospheric pressure storage tanks according to claim 1 is characterized by: The fixing ring (1) is composed of four groups of fan-shaped plates (11), the four groups of fan-shaped plates (11) are in the shape of a ring, and the inside of the four groups of fan-shaped plates (11) is provided with an expansion slot (12), the four groups of the first suction cups (16) are installed at the rear ends of the two groups of fan-shaped plates (11) on the upper and lower sides, and the two groups of guide pillars (17) are installed at the front ends of the two groups of fan-shaped plates (11) on the left and right sides.

6. The surface crater repair equipment for atmospheric pressure storage tanks according to claim 5 is characterized by: A group of expansion plates (13) is movably installed inside every two groups of the fan-shaped plates (11), and a total of four groups of the expansion plates (13) are provided. A first spring (14) is fixedly connected between every two groups of the expansion plates (13).

7. The surface crater repair equipment for atmospheric pressure storage tanks according to claim 6 is characterized by: The fan-shaped plate (11) can be expanded outwards through the expansion plate (13), and the fan-shaped plate (11) drives the two groups of guide pillars (17) to move to both sides when expanding.

8. The surface crater repair equipment for atmospheric pressure storage tanks according to claim 7 is characterized by: When the guide column (17) expands and moves outward, the slide plate (27) can be drawn out of the storage groove (23) through the limiting slide groove (19) and the slide block on the side of the slide plate (27).

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