Metal storage tank welding jacking system and construction method thereof

Abstract

The present invention discloses a metal storage tank welding jacking system and construction method, which comprises a discharge device, a welding device and a jacking device, a steel plate track and a plurality of steel column brackets; the plurality of steel column brackets are arranged on the jacking device and the steel column brackets can be raised as a whole, the jacking device is fixedly arranged on a concrete foundation and sleeved outside the steel column brackets, the discharge device is arranged on one side of the steel plate track and the discharge port of the discharge device is connected to the steel plate track, the steel plate track can support and push the steel plate to rotate on the steel plate track, and the welding device is movably arranged on both sides of the steel plate track to weld adjacent steel plates. The metal storage tank jacking system avoids the inverted construction method in the traditional metal storage tank construction by the arrangement of the jacking device, which is convenient for the construction personnel to construct the tank, and at the same time avoids a large amount of hoisting work in the traditional construction process by the jacking of the jacking device, saving the hoisting cost and reducing the construction difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of large storage tank construction, and more specifically, to a metal storage tank welding jacking system and a construction method thereof. Background Art

[0002] Increasing crude oil reserves is urgent, therefore, our country has attached great importance to the construction of national oil reserves and finished oil depots.

[0003] Large vertical steel storage tanks are very important storage and transportation equipment, and are increasingly used in storage and transportation projects such as crude oil and refined oil. Among them, vertical cylindrical vaulted tanks and floating roof tanks are the most common. Therefore, the production and installation of vertical circular storage tanks are also constantly updated and developed. The prefabrication, tank lifting and welding of large storage tanks are the main processes of storage tank production and installation, which directly affect the construction quality of storage tank production and installation. At the same time, the main workload of storage tank production and installation work is concentrated on the welding process.

[0004] At present, the construction of metal storage tanks in the petroleum industry generally adopts the inverted construction method of metal storage tanks (dome tanks), that is, the top plate arch is constructed first and then a crane is used to lift the side wall panels and top plates section by section. However, the inverted construction method has the disadvantages of poor lifting accuracy, high lifting costs, high labor costs, low welding quality, and poor construction environment during internal closed welding.

[0005] Therefore, in view of the above problems, there is an urgent need for a metal storage tank welding jacking device that is easy to construct, has high welding quality, can effectively reduce construction hoisting costs, and shortens construction period. Summary of the invention

[0006] The object of the present invention is to provide a metal storage tank welding jacking system and a construction method thereof. The metal storage tank welding jacking system provided by the present invention sets a steel column bracket on a jacking device, so that the metal storage tank does not need to be inverted for construction, and can be welded one by one from the top to the bottom of the metal storage tank, thereby improving the welding quality. In addition, the metal storage tank welding jacking system does not need to be hoisted multiple times during the hoisting process, effectively saving hoisting costs and shortening the construction period.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A metal storage tank welding jacking system is used for welding and jacking a storage tank formed by splicing multiple steel plates. The metal storage tank welding jacking system comprises: a discharging device, a welding device and a jacking device, a steel plate track and multiple steel column brackets;

[0009] A plurality of the steel column supports are arranged on the jacking device and the steel column supports can be raised as a whole; the jacking device is fixedly arranged on a concrete foundation and is sleeved outside the steel column supports; the discharging device is arranged on one side of the steel plate track and the discharging port of the discharging device is connected to the steel plate track; the steel plate track can support and push the steel plate to rotate on the steel plate track; the welding device can be movably arranged on both sides of the steel plate track to weld adjacent steel plates.

[0010] Preferably, the jacking device comprises a base, a hydraulic lifting mechanism and a steel column heightening section;

[0011] The base is fixedly arranged on a concrete foundation, the hydraulic lifting mechanism is arranged on the base, the steel column bracket is arranged on the hydraulic lifting mechanism and connected to the output end of the hydraulic lifting mechanism, and the steel column heightening section can be connected to the bottom end of the steel column bracket through the hydraulic lifting mechanism.

[0012] Preferably, the steel column heightening section includes a fixed section and a sliding section, the fixed section and the sliding section are alternately connected in sequence, the bottom end of the steel column bracket is connected to the fixed section, a plurality of rigid connection points are fixedly provided on the fixed section, and the fixed section can be fixedly connected to the tank wall panel through the rigid connection points.

[0013] Preferably, the steel column support comprises a transmission mechanism and a sliding support section;

[0014] The transmission mechanism is arranged outside the steel column bracket and is located at one end of the steel column bracket close to the discharging device. The transmission mechanism can drive the steel plate to move on the steel plate track. The sliding bracket section is slidingly connected to the metal storage tank wall panel, and the bottom end of the sliding bracket section can be connected to the fixed section to lift and raise the sliding bracket section.

[0015] Preferably, the metal tank welding jacking system further comprises a sliding device, which is detachably arranged on the tank wall plate, and can drive the tank wall plate to be slidably connected with the sliding bracket section and the sliding section.

[0016] Preferably, the sliding device comprises a pulley, a guide rail and an inflatable liner;

[0017] The pulley is detachably arranged on the sliding bracket section and the sliding section at a position corresponding to the guide rail, the guide rail is detachably connected to the inflatable liner, the inner wall of the inflatable liner can abut against the tank wall panel, and the pulley can be slidably connected to the guide rail.

[0018] Preferably, the discharging device comprises a housing, a discharging mechanism and a material transporting mechanism;

[0019] A discharging cavity and a storage cavity are arranged in the shell, the transport mechanism is arranged on the side wall of the storage cavity to transport the steel plate in the storage cavity, the discharging mechanism is arranged in the discharging cavity and the output end of the discharging mechanism can extend out of the shell to support the steel plate.

[0020] Preferably, the discharging mechanism comprises a plurality of telescopic rods, the plurality of telescopic rods are all in contact with the steel plate and the output ends of the plurality of telescopic rods are all provided with protective cushions.

[0021] Preferably, the welding device comprises a base, a welding head and no less than two mechanical arms;

[0022] The base is arranged on a concrete pedestal, the welding head is rotatably connected to one of the mechanical arms, the mechanical arm close to the base is rotatably arranged on the base, and adjacent mechanical arms are rotatably connected.

[0023] The present invention also provides a metal storage tank welding jacking method, which is implemented based on the above-mentioned metal storage tank welding jacking system, and the metal storage tank welding jacking method comprises:

[0024] S1. Construction positioning: Position the concrete foundation, steel column support, discharging device, welding device and jacking device according to the construction site;

[0025] S2. Device installation: According to the position determined in step S1, the jacking device is fixed on the concrete foundation, the steel column bracket is installed on the jacking device, and then the discharging device and the welding device are installed one by one;

[0026] S3, discharging and temporary fixation: the bent steel plates are stored in the discharging device, the discharging device discharges the steel plates, and the discharging steel plates are temporarily fixed by the telescopic rod of the discharging device, so that the transmission mechanism can drive the steel plates to rotate along the preset tank wall track on the steel plate track. After the rotation, the first discharging steel plate stops on the steel plate track, and the second steel plate contacts the side wall of the first steel plate after the above steps;

[0027] S4, vertical welding: The welding device performs temporary welding on the inner wall and outer wall of the joint of the two contacting steel plates simultaneously. After the welding of one circle of the tank wall plate is completed, the weld is checked. After it is correct, complete vertical weld is performed to form a complete tank wall plate metal ring;

[0028] S5. Melon-skin roof of the storage tank: After the top plate is divided into melon-skin plates according to the preset drawings, the tank top is welded. The lower weld is welded by the internal welding device, and the upper weld is welded manually;

[0029] S6, connection of tank top: lift the tank top through the hydraulic lifting mechanism and weld and close the first circle of tank wall metal ring completed in S4 to form a whole;

[0030] S7, the first circle of tank wall metal rings are detachably connected to the sliding device, and the inflatable liner is inflated so that the sliding device is tightly fitted with the metal wall, and the friction between the sliding device and the metal wall is greater than the gravity of the tank top and the first circle of tank wall metal rings, so that the tank wall metal rings are slidably connected to the steel column bracket;

[0031] S8. Lifting of the tank wall and tank top: The steel column bracket is fixedly connected to the tank wall through a rigid connection point, and the lifting device works to lift the first circle of the tank wall metal ring and the tank top;

[0032] S9, repeat the above steps S3 and S4 to form a second circle of tank wall metal rings, weld the first circle of metal rings to the second circle of tank wall metal rings with a transverse weld, check the connection seams between the first circle of tank wall metal rings and the second circle of tank wall metal rings, and perform symmetrical transverse welds after they are correct, and rotate the second circle of tank wall metal rings through the pulley for welding;

[0033] S10, weld the second circle of tank wall metal rings to the detachable fixing points and connect the rigid connection points with iron pins, lock the iron pins of the detachable fixing points before lifting the tank wall, open them when rotating, and keep them in a locked state at ordinary times, and construct the fixed joints and sliding joints in sequence until the tank side wall construction is completed;

[0034] S11. Remove the bottom layer of the steel column lifting device, drop the side wall panels together with the top plate onto the bottom plate, and weld the bottom circumferential weld.

[0035] The beneficial effects of the present invention are:

[0036] The present invention proposes a metal storage tank lifting system, which is provided with a plurality of steel column brackets on a lifting device, wherein the steel plates outputted from the discharging device are welded one by one into a circle of integral metal storage tank wall plates through steel plate tracks and welding devices, and the welded metal storage tank wall plates are lifted by the lifting device. The metal storage tank lifting system avoids the inverted construction method in the traditional metal storage tank construction through the setting of the lifting device, which is convenient for construction personnel to construct the tank. At the same time, the lifting of the lifting device avoids a large amount of hoisting work in the traditional construction process, saves hoisting costs, and reduces the difficulty of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the metal storage tank welding jacking system of the present invention;

[0038] Figure 2It is a structural schematic diagram of a jacking device of a metal storage tank welding jacking system of the present invention;

[0039] Figure 3 It is a structural schematic diagram of a sliding device of a metal storage tank welding jacking system of the present invention;

[0040] Figure 4 It is a structural schematic diagram of a discharge device of a metal storage tank welding jacking system of the present invention;

[0041] Figure 5 It is a structural schematic diagram of a welding device of a metal storage tank welding jacking system of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the unfolding of the metal storage tank wall plate of the metal storage tank welding jacking system of the present invention.

[0043] Description of reference numerals:

[0044] 1. Steel column bracket;

[0045] 2. Lifting device; 21. Base; 22. Hydraulic lifting mechanism; 23. Steel column heightening section; 231. Fixed section; 232. Sliding section;

[0046] 3. Discharging device; 31. Shell; 32. Material transport mechanism; 33. Discharging mechanism;

[0047] 4. Welding device; 41. Mounting bracket; 42. Translation bracket; 43. Sliding bracket; 44. Mechanical arm; 45. Welding head;

[0048] 5. Steel plate track;

[0049] 6. Sliding device; 61. Pulley; 62. Guide rail; 63. Inflatable liner. DETAILED DESCRIPTION

[0050] Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without violating the connotation of the present invention, so the present invention is not limited to the specific implementation disclosed below.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0053] like Figure 1 As shown, the present invention provides a metal storage tank welding jacking system, which is used for welding and jacking a storage tank formed by splicing multiple steel plates. The metal storage tank welding jacking system includes: a discharge device 3, a welding device 4 and a jacking device 2, a steel plate track 5 and a plurality of steel column brackets 1; the plurality of steel column brackets 1 are arranged on the jacking device 2 and the steel column bracket 1 can be raised as a whole, the jacking device 2 is fixedly arranged on a concrete foundation and sleeved on the outside of the steel column bracket 1, the discharge device 3 is arranged on one side of the steel plate track 5 and the discharge port of the discharge device 3 is connected to the steel plate track 5, the steel plate track 5 can support and push the steel plate to rotate on the steel plate track 5, and the welding device 4 is movably arranged on both sides of the steel plate track 5 to weld adjacent steel plates.

[0054] In this embodiment, the metal storage tank lifting system is implemented by arranging a plurality of steel column brackets 1 on the lifting device 2, and the steel plates output from the discharging device 3 are welded one by one into a circle of integral metal storage tank wall plates through the steel plate track 5 and the welding device 4, and the welded metal storage tank wall plates are lifted by the lifting device 2. The metal storage tank lifting system avoids the inverted construction method in the traditional metal storage tank construction through the setting of the lifting device 2, which is convenient for the construction personnel to construct the tank. At the same time, the lifting of the lifting device 2 avoids a lot of hoisting work in the traditional construction process, saves hoisting costs, and reduces the construction difficulty. The movable welding device 4 further facilitates the construction personnel to weld the steel plates on the steel plate track 5, reduces the construction difficulty of the construction personnel, and improves the construction efficiency and welding quality. In addition, the tank wall panel metal ring welded on the steel plate track 5 can be slidably connected to the steel column bracket 1 through the sliding device 6. The tank wall panel metal ring slidably connected to the steel column bracket 1 further facilitates the welding between adjacent tank wall panel metal rings, avoiding the need for construction personnel to repeatedly adjust the position of the welding device 4 during the welding process, reducing labor intensity, saving labor costs, avoiding manual errors caused by human operation, and further improving welding quality.

[0055] See also Figure 1 and Figure 2 The jacking device 2 includes a base 21, a hydraulic lifting mechanism 22 and a steel column heightening section 23; the base 21 is fixedly arranged on a concrete foundation, the hydraulic lifting mechanism 22 is arranged on the base 21, the steel column bracket 1 is arranged on the hydraulic lifting mechanism 22 and connected to the output end of the hydraulic lifting mechanism 22, and the steel column heightening section 23 can be connected to the bottom end of the steel column bracket 1 through the hydraulic lifting mechanism 22.

[0056] The steel column heightening section 23 includes a fixed section 231 and a sliding section 232, which are alternately connected in sequence. The bottom end of the steel column bracket 1 is connected to the fixed section 231, and a plurality of rigid connection points are fixedly arranged on the fixed section 231. The fixed section 231 can be fixedly connected to the tank wall plate through the rigid connection points. In one embodiment, the tank wall plate metal rings of even number circles are connected to the fixed section 231, and the tank wall plate metal rings of even number circles are provided with detachable fixing points, which are connected to the rigid connection points on the fixed section 231 through the detachable fixing points, and the tank wall plate metal rings of the cardinal number circles are connected to the sliding section 232. When the tank wall plate and the steel column bracket 1 are lifted as a whole, the fixed section 231 is fixedly connected to the tank wall plate through the rigid connection points, thereby enhancing the integrity of the tank wall plate, the steel column bracket 1 and the steel column heightening section 23, improving the safety of the system, and avoiding the shaking of the tank wall plate during the lifting process. When the tank wall plate needs to be rotated, the detachable fixing point on the metal ring of the tank wall plate is disconnected from the rigid connection point, and the tank wall plate is slidingly connected to the sliding joint 232 and the sliding bracket joint and can rotate relative to the steel column bracket 1.

[0057] The steel column support 1 includes a transmission mechanism and a sliding support section; the transmission mechanism is arranged outside the steel column support 1 and is located at one end of the steel column support 1 close to the discharging device 3, the transmission mechanism can drive the steel plate to move on the steel plate track 5, the sliding support section is slidably connected to the metal tank wall plate, and the bottom end of the sliding support section can be connected to the fixed section 231 to lift the sliding support section. In one embodiment, the transmission mechanism is a conveyor belt, the conveyor belt includes a conveyor belt and a driving motor, the conveyor belt is laid on the steel plate track 5, and the driving motor drives the conveyor belt to repeatedly rotate on the steel plate track 5 to drive the steel plate to move on the steel plate track 5.

[0058] In this embodiment, the base 21 of the jacking device 2 is fixedly arranged on a preset concrete foundation, the sliding bracket section is arranged on the base 21 of the jacking device 2, and the sliding bracket section is connected to the hydraulic lifting mechanism 22. After the first circle of the tank wall metal ring is connected to the sliding bracket section through the sliding device 6, the sliding bracket section is lifted by the hydraulic lifting mechanism 22, thereby driving the first circle of the tank wall metal ring connected thereto to be lifted together, and a steel column heightening section 23 is added to the bottom of the lifted sliding bracket section. After the steel column heightening section 23 is connected and fixed to the sliding bracket section, the hydraulic lifting mechanism 22 is reset so that the steel column heightening section 23 and the sliding bracket section can be lifted as a whole after the second circle of the tank wall metal ring is welded.

[0059] See also Figure 3 The metal tank welding jacking system further comprises a sliding device 6, which is detachably arranged on the tank wall plate, and can drive the tank wall plate to slide and connect with the sliding bracket section and the sliding section 232. The sliding device 6 comprises a pulley 61, a guide rail 62 and an inflatable liner 63; the pulley 61 is detachably arranged on the sliding bracket section and the sliding section 232 corresponding to the position of the guide rail 62, the guide rail 62 is detachably connected with the inflatable liner 63, the inner wall of the inflatable liner 63 can abut against the tank wall plate, and the pulley 61 can slide and connect with the guide rail 62.

[0060] In this embodiment, the setting of the sliding device 6 allows the steel plate to be detachably connected to the sliding bracket section and the sliding joint 232 through the sliding device 6 after being welded on the steel plate rail 5, and because the friction between the sliding device and the metal wall plate is greater than the gravity of the tank top and the first circle of the tank wall plate metal rings, the welded tank wall plate metal rings can be firmly and stably slidably connected to the sliding bracket section and the sliding joint 232, which not only realizes the connection between the tank wall plate metal rings and the sliding bracket section and the sliding joint 232, but also facilitates the construction personnel to weld adjacent tank wall plate metal rings. The rotatable tank wall plate metal rings avoid the repeated movement of the welding device 4 when welding adjacent tank wall plate metal rings, reduces the labor intensity of the construction personnel, and avoids the need for the welding device 4 to repeatedly align the welding seams, which simplifies the construction steps and improves the welding quality. In one embodiment, the sliding device 6 is installed on both sides of the metal wall panel, and the metal wall panel is tightly abutted between the sliding devices 6 on both sides by inflating the inflatable liner 63 in the sliding device 6, and the sliding device 6 can be connected to the steel column bracket 1 located on both sides of the metal storage tank wall panel through the pulley 61.

[0061] like Figure 4 As shown, the discharging device 3 includes a housing 31, a discharging mechanism 33 and a conveying mechanism 32; a discharging cavity and a storage cavity are arranged in the housing 31, the conveying mechanism 32 is arranged on the side wall of the storage cavity to transport the steel plate in the storage cavity, the discharging mechanism 33 is arranged in the discharging cavity and the output end of the discharging mechanism 33 can extend out of the housing 31 to support the steel plate. The discharging mechanism 33 includes a plurality of telescopic rods, all of which are in contact with the steel plate and the output ends of the plurality of telescopic rods are provided with protective cushions.

[0062] In this embodiment, the discharging device 3 is set so that before the construction of the metal storage tank, the bent steel plates preset according to the metal storage tank can be stored in the storage cavity to prevent the steel plates from being exposed to the outside and being corroded and consumed. The transport mechanism 32 can be a conveyor belt connecting the storage cavity and the discharging cavity. The steel plates stored in the storage cavity are transported to the discharging cavity through the conveyor belt, and then pushed out to the steel plate track 5 in the discharging cavity through the telescopic rod set in the discharging cavity.

[0063] See also Figure 5 The welding device 4 includes a base 21, a welding head 45 and no less than two mechanical arms 44; the base 21 is set on a concrete base, the welding head 45 is rotatably connected to one of the mechanical arms 44, the mechanical arm 44 close to the base 21 is rotatably set on the base 21, and adjacent mechanical arms 44 are rotatably connected.

[0064] In a preferred embodiment, the base 21 further comprises a mounting bracket 41, a translation bracket 42, a sliding frame 43 and a retractable universal wheel, a mechanical arm 44 close to the base 21 is arranged on the mounting bracket 41, the mounting bracket 41 is rotatably arranged on the sliding frame 43, the sliding frame 43 is slidably arranged on the translation bracket 42, the translation bracket 42 is provided with a relative sliding groove to slide and install the above-mentioned sliding frame 43, and a retractable universal wheel is arranged at the bottom of the sliding frame 43 to facilitate the movement of the welding device 4. In an embodiment, the bottom of the mounting bracket 41 can be a rotating gear, the sliding frame 43 is provided with a gear ring meshing with the rotating gear at the position corresponding to the mounting bracket 41, and the end of the welding head 45 can also be set as a second rotating gear, and the end of the mechanical arm 44 connected to the welding head 45 is provided with a second gear ring meshing with the second rotating gear so that the welding head 45 can be rotated and the welding head 45 is convenient for fixing during welding.

[0065] In a preferred embodiment, the steel plate track 5 includes a groove bottom plate for supporting the steel plate and a steel plate conveyor belt arranged on the inner bottom surface of the groove bottom plate, pulleys arranged on the opposite inner side walls of the groove bottom plate, and a limiting suction cup arranged at one-quarter of the height of the inner side wall of the groove bottom plate; the inlet of the groove bottom plate is connected with the outlet of the discharging device, and the driving motor of the steel plate conveyor belt is arranged at the inlet of the groove bottom plate to drive the steel plate entering the steel plate track to move along the groove bottom plate, and the pulleys are arranged in pairs on the opposite sides of the groove bottom plate so that the steel plate can slide quickly along the groove bottom plate and reduce the friction between the groove bottom plate and the steel plates, and the limiting suction cup is fixed at one-quarter of the height of the inner side wall of the groove bottom plate by a telescopic rod, which enables the steel plate to be fixed by the limiting suction cup when the adjacent steel plates need to be welded in the groove bottom plate, thereby avoiding movement of the steel plates during welding and ensuring the quality of welding.

[0066] like Figure 1-Figure 6 As shown, for better application, based on the above-mentioned metal storage tank welding jacking system, the present invention also proposes a metal storage tank welding jacking method, and the metal storage tank welding jacking method includes:

[0067] S1. Construction positioning: Position the concrete foundation, steel column support 1, discharge device 3, welding device 4, and jacking device 2 according to the construction site;

[0068] S2, device installation: according to the position determined in step S1, the jacking device 2 is fixedly installed on the concrete foundation, the steel column bracket 1 is installed on the jacking device 2, and then the discharging device 3 and the welding device 4 are installed one by one;

[0069] S3, discharging and temporary fixation: the bent steel plates are stored in the discharging device 3, the discharging device 3 discharges the steel plates, and the discharging steel plates are temporarily fixed by the telescopic rod of the discharging device 3, so that the transmission mechanism can drive the steel plates to rotate along the preset tank wall track on the steel plate track 5. After the rotation, the first discharging steel plate stops on the steel plate track 5, and the second steel plate contacts the side wall of the first steel plate after the above steps;

[0070] S4, vertical welding: The welding device 4 performs temporary welding on the inner wall and the outer wall of the joint of the two contacting steel plates simultaneously, and after the welding of one circle of the tank wall plate is completed, the weld is checked, and after it is correct, a complete vertical weld is performed to form a complete tank wall plate metal ring;

[0071] S5, melon-skin roof of the storage tank: after the top plate is divided into melon-skin plates according to the preset drawings, the tank top is welded, the lower weld is welded by the internal welding device 4, and the upper weld is welded manually;

[0072] S6, connection of tank top: lift the tank top through the hydraulic lifting mechanism 22 and weld and close the first circle of tank wall metal rings completed in S4 to form a whole;

[0073] S7, the first circle of tank wall metal rings are detachably connected to the sliding device 6, and the inflatable liner 63 is inflated so that the sliding device 6 is tightly fitted with the metal wall, at which time the friction between the sliding device 6 and the metal wall is greater than the gravity of the tank top and the first circle of tank wall metal rings, and the sliding device 6 is slidably connected to the steel column bracket 1;

[0074] S8, lifting of the tank wall plate and the tank top: the steel column bracket 1 is fixedly connected to the tank wall plate through a rigid connection point, and the lifting device 2 works to lift the steel column bracket 1 so that the first circle of the tank wall plate metal ring and the tank top are lifted. At this time, the steel column heightening section 23 is connected to the bottom of the lifted steel column bracket 1, and the first steel column heightening section 23 is a fixed section 231;

[0075] S9, repeat the above steps S3 and S4 to form a second circle of tank wall metal rings, weld the first circle of metal rings to the second circle of tank wall metal rings through a transverse weld, check the connection seams between the first circle of tank wall metal rings and the second circle of tank wall metal rings, and perform symmetrical transverse welds after they are confirmed, and rotate the second circle of tank wall metal rings through the pulley 61 for welding;

[0076] S10, weld the second circle of tank wall metal rings to the detachable fixing points and connect the rigid connection points with iron pins, lock the iron pins of the detachable fixing points before subsequent lifting, open them when rotating, and keep them in a locked state at ordinary times, and construct the fixed joints 231 and the sliding joints 232 in sequence until the construction of the tank side wall is completed;

[0077] S11, dismantle the bottom layer of the steel column lifting device 2, drop the side wall plate together with the top plate onto the bottom plate, and weld the bottom circumferential weld.

[0078] Furthermore, after the overall welding of the metal storage tank is completed, the steel column bracket 1 and the steel column heightening section 23 can be gradually dismantled into a stepped shape according to on-site needs. The stepped steel column bracket 1 and the steel column heightening section 23 make it easy for construction workers to install a ladder after the overall completion of the metal storage tank for the convenience of users.

[0079] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A metal tank welding jacking system, used for welding and jacking a tank formed by splicing multiple steel plates, characterized in that: The metal storage tank welding jacking system comprises: a discharging device, a welding device and a jacking device, a steel plate track and a plurality of steel column brackets; A plurality of the steel column brackets are arranged on the jacking device and the steel column brackets can be raised as a whole. The jacking device is fixedly arranged on a concrete foundation and sleeved outside the steel column brackets. The discharging device is arranged on one side of the steel plate track and the discharging port of the discharging device is connected to the steel plate track. The steel plate track can support and push the steel plate to rotate on the steel plate track. The welding device is movably arranged on both sides of the steel plate track to weld adjacent steel plates. The steel plate on the steel plate track can be connected to the steel column brackets. The jacking device can lift the steel column brackets to drive the steel plate to rise. The jacking device includes a base, a hydraulic lifting mechanism and a steel column heightening section; the base is fixedly arranged on a concrete foundation, the hydraulic lifting mechanism is arranged on the base, the steel column bracket is arranged on the hydraulic lifting mechanism and connected to the output end of the hydraulic lifting mechanism, and the steel column heightening section can be connected to the bottom end of the steel column bracket through the hydraulic lifting mechanism; The steel column heightening section includes a fixed section and a sliding section, which are alternately connected in sequence. The bottom end of the steel column bracket is connected to the fixed section, and a plurality of rigid connection points are fixedly arranged on the fixed section. The fixed section can be fixedly connected to the tank wall panel through the rigid connection points.

2. The metal storage tank welding jacking system according to claim 1 is characterized in that: The steel column bracket includes a transmission mechanism and a sliding bracket section; The transmission mechanism is arranged outside the steel column bracket and is located at one end of the steel column bracket close to the discharging device. The transmission mechanism can drive the steel plate to move on the steel plate track. The sliding bracket section is slidingly connected to the metal storage tank wall panel, and the bottom end of the sliding bracket section can be connected to the fixed section to lift and raise the sliding bracket section.

3. The metal storage tank welding jacking system according to claim 2 is characterized in that: The metal tank welding jacking system also includes a sliding device, which is detachably arranged on the tank wall plate, and can drive the tank wall plate to be slidably connected with the sliding bracket section and the sliding section.

4. The metal storage tank welding jacking system according to claim 3 is characterized in that: The sliding device includes a pulley, a guide rail and an inflatable liner; The pulley is detachably arranged on the sliding bracket section and the sliding section at a position corresponding to the guide rail, the guide rail is detachably connected to the inflatable liner, the inner wall of the inflatable liner can abut against the tank wall panel, and the pulley can be slidably connected to the guide rail.

5. The metal storage tank welding jacking system according to claim 1 is characterized in that: The discharging device comprises a housing, a discharging mechanism and a material transporting mechanism; A discharging cavity and a storage cavity are arranged in the shell, the transport mechanism is arranged on the side wall of the storage cavity to transport the steel plate in the storage cavity, the discharging mechanism is arranged in the discharging cavity and the output end of the discharging mechanism can extend out of the shell to support the steel plate.

6. The metal storage tank welding jacking system according to claim 5 is characterized in that: The discharging mechanism comprises a plurality of telescopic rods, the plurality of telescopic rods are all in contact with the steel plate and the output ends of the plurality of telescopic rods are all provided with protective cushions.

7. The metal storage tank welding jacking system according to claim 1 is characterized in that: The welding device comprises a base, a welding head and no less than two mechanical arms; The base is arranged on a concrete pedestal, the welding head is rotatably connected to one of the mechanical arms, the mechanical arm close to the base is rotatably arranged on the base, and adjacent mechanical arms are rotatably connected.

8. A metal storage tank welding jacking method, characterized in that: The metal storage tank welding jacking method is implemented based on the metal storage tank welding jacking system according to any one of claims 1 to 7, and the metal storage tank welding jacking method includes: S1. Construction positioning: Position the concrete foundation, steel column support, discharging device, welding device and jacking device according to the construction site; S2. Device installation: According to the position determined in step S1, the jacking device is fixed on the concrete foundation, the steel column bracket is installed on the jacking device, and then the discharging device and the welding device are installed one by one; S3, discharging and temporary fixation: the bent steel plates are stored in the discharging device, the discharging device discharges the steel plates, and the discharging steel plates are temporarily fixed by the telescopic rod of the discharging device, so that the transmission mechanism can drive the steel plates to rotate along the preset tank wall track on the steel plate track. After the rotation, the first discharging steel plate stops on the steel plate track, and the second steel plate contacts the side wall of the first steel plate after the above steps; S4, vertical welding: The welding device performs temporary welding on the inner wall and outer wall of the joint of the two contacting steel plates simultaneously. After the welding of one circle of the tank wall plate is completed, the weld is checked. After it is correct, complete vertical weld is performed to form a complete tank wall plate metal ring; S5. Melon-skin roof of the storage tank: After the top plate is divided into melon-skin plates according to the preset drawings, the tank top is welded. The lower weld is welded by the internal welding device, and the upper weld is welded manually; S6, connection of tank top: lift the tank top through the hydraulic lifting mechanism and weld and close the first circle of tank wall metal ring completed in S4 to form a whole; S7, the first circle of tank wall metal rings are detachably connected to the sliding device, and the inflatable liner is inflated so that the sliding device is tightly fitted with the metal wall, and the friction between the sliding device and the metal wall is greater than the gravity of the tank top and the first circle of tank wall metal rings, so that the tank wall metal rings are slidably connected to the steel column bracket; S8. Lifting of the tank wall and tank top: The steel column bracket is fixedly connected to the tank wall through a rigid connection point, and the lifting device works to lift the first circle of the tank wall metal ring and the tank top; S9, repeat the above steps S3 and S4 to form a second circle of tank wall metal rings, weld the first circle of metal rings to the second circle of tank wall metal rings with a transverse weld, check the connection seams between the first circle of tank wall metal rings and the second circle of tank wall metal rings, and perform symmetrical transverse welds after they are correct, and rotate the second circle of tank wall metal rings through the pulley for welding; S10, weld the second circle of tank wall metal rings to the detachable fixing points and connect the rigid connection points with iron pins, lock the iron pins of the detachable fixing points before lifting the tank wall, open them when rotating, and keep them in a locked state at ordinary times, and construct the fixed joints and sliding joints in sequence until the tank side wall construction is completed; S11. Remove the bottom layer of the steel column lifting device, drop the side wall panels together with the top plate onto the bottom plate, and weld the bottom circumferential weld.

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