A prefabrication construction tool and method for spherical tank upper top and lower bottom kettle type arc plate

Abstract

The application provides a prefabrication construction tool and method for a spherical tank upper top and lower bottom pot-shaped arc plate, and relates to the technical field of spherical tank production. The type steel structure component is arranged on the platform base, the type steel structure component comprises a small ring component and a large ring component, the large ring component is arranged on the outer side of the small ring component, the height of the large ring component is lower than the height of the small ring component, the inner side of the small ring component is provided with a steel pipe, and the height of the steel pipe is greater than the height of the small ring component, the first clamping block and the inclined cushion block are arranged on the platform base and surround the large ring component; the top whole plate of the pot-shaped arc plate is supported and positioned by the steel pipe, the plate foot steel plate of the pot-shaped arc plate is supported and positioned by the first clamping block on the platform base, the height difference is adjusted by moving the inclined cushion block, the width of the joint and the height difference are adjusted, and the joint is welded, which is beneficial to fixing the position of the top whole plate and the plate foot steel plate and adjusting the height difference of the joint, and improves the assembly quality.

Description

Technical Field

[0001] This invention relates to the field of spherical tank manufacturing technology, and in particular to a prefabrication tool and method for the upper top and lower bottom pot-shaped arc plates of a spherical tank. Background Technology

[0002] A spherical tank is a steel container used primarily in the petroleum refining and petrochemical industries for storing and transporting liquid or gaseous materials. Its operating temperature is typically -50 to 50°C, and its operating pressure is generally below 3 MPa. Compared to cylindrical containers (i.e., general storage tanks), spherical tanks require only half the wall thickness of cylindrical containers under the same diameter and pressure, resulting in less steel consumption, smaller footprint, and simpler foundation engineering. However, the manufacturing, welding, and assembly requirements for spherical tanks are very stringent, involving a large amount of inspection work and higher manufacturing costs. Spherical tanks are large-capacity, pressurized spherical storage containers widely used in petroleum, chemical, and metallurgical industries. They can be used as storage containers for liquefied petroleum gas, liquefied natural gas, liquid ammonia, and other media, as well as storage tanks for compressed gases (air, oxygen, nitrogen, hydrogen, and city gas).

[0003] Spherical tanks are generally composed of an upper pot-shaped arc plate and a lower pot-shaped arc plate. In production, the upper and lower pot-shaped arc plates of the spherical tank need to be prefabricated. The stamped steel blocks of the pot-shaped arc plates are generally divided into multiple pieces. During welding, due to the instability of hoisting and the tolerances of the stamped steel blocks themselves, uneven weld heights are prone to occur, affecting the assembly quality of the pot-shaped arc plates. Therefore, this invention proposes a prefabrication construction tool and method for the upper and lower pot-shaped arc plates of spherical tanks to solve the problems existing in the prior art. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a prefabrication tool and method for the top and bottom pot-shaped arc plates of a spherical tank. This tool and method facilitates the fixing of the position of the top plate and the foot steel plates, and adjusts the height difference of the joints, thereby improving the assembly quality.

[0005] To achieve the objectives of this invention, the invention is implemented through the following technical solution: a prefabrication construction tool for the top and bottom of a spherical tank with a pot-shaped arc plate, comprising a platform base and a steel structure component. The steel structure component is disposed on the platform base and includes a small ring component and a large ring component. The large ring component is disposed outside the small ring component, and the height of the large ring component is lower than the height of the small ring component. A steel pipe is disposed inside the small ring component, and the height of the steel pipe is greater than the height of the small ring component. A first locking block and an inclined pad block are disposed around the large ring component on the platform base.

[0006] The steel pipe is used to position and support the top plate of the pot-shaped arc plate. The first locking block is used to support and limit the foot steel plate of the pot-shaped arc plate. The inclined pad is used to support and adjust the height of the foot steel plate. The middle arc plate is welded between the top plate and the foot steel plate, and the middle arc plate is aligned with the top plate and the foot steel plate by a seam-aligning tool.

[0007] A further improvement is that the seam fitting tool includes a seam fitting plate and a seam fitting piece. The seam fitting plate is used to weld to the seam of the middle arc plate, the top plate, and the foot plate, and the seam fitting plate has a central hole.

[0008] A further improvement is that the seam-jointing piece is provided with a tapered bolt, and the tapered bolt is adapted to the central hole. The tapered bolt is used to connect the seam-jointing piece and the seam-jointing positioning plate, and to control the insertion depth to adjust the height difference of the seam.

[0009] A further improvement is that a stop block is provided on the inner side of the top plate, and the upper end of the steel pipe is used to insert between the stop blocks for positioning and fixing.

[0010] A further improvement is that a second locking block is provided on the platform base at the position below the small ring component, and multiple sets of the second locking blocks are arranged at equal included angles around the center of the small ring component. The second locking block is used to support the lower end of the limiting steel pipe.

[0011] A further improvement is that a horizontal connecting rod connects the small ring component and the large ring component, and multiple sets of horizontal connecting rods are arranged at equal angles around the center of the small ring component, and the small ring component and the large ring component are connected as a whole by the horizontal connecting rod.

[0012] A further improvement is that the inclined pad is a right-angled triangle, and the inclined pad is located on the inner and outer sides of the foot plate, so that the height of the foot plate can be adjusted simultaneously from the inner and outer sides.

[0013] A method for prefabricating the top and bottom of a spherical tank in the shape of a pot-shaped arc plate includes the following steps:

[0014] S1: First, weld the stop block onto the top plate, then insert the top plate along the stop block onto the steel pipe and position it.

[0015] S2: Insert the steel plate of the foot of the pot-shaped arc plate into the first locking block around the platform base, and move the inclined shim to adjust the height difference, adjust the joint width and height difference, and weld the joint.

[0016] S3: After welding is completed, the middle arc plate is hoisted into place, and the seam clamping plate is welded on the outside. The seam clamping plate is fitted with the seam clamping plate, and the depth is adjusted by inserting the tapered bolt. After adjusting the height difference and seam width, the seam gap is welded.

[0017] A further improvement is that, in step S1, before inserting the top plate onto the steel pipe, the lower end of the steel pipe is inserted into the second locking block to fix the position of the steel pipe.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention uses steel pipes to support and position the top plate of the pot-shaped arc plate, and the first locking block on the platform base supports and limits the plate foot steel plate of the pot-shaped arc plate. The height difference is adjusted by moving the inclined pad, adjusting the joint width and height difference, and welding the joint. This helps to fix the position of the top plate and the plate foot steel plate, adjust the joint height difference, and improve the assembly quality.

[0020] 2. In this invention, a joint clamping plate is welded at the joint of the middle arc plate, the top plate, and the foot steel plate. The joint clamping plate and the tapered bolt are inserted and connected. By adjusting the insertion depth of the tapered bolt, the joint is calibrated, the height difference and the joint width are adjusted, and the welding quality is further improved.

[0021] 3. The steel structure component of the present invention is composed of small ring components and large ring components in conjunction with horizontal connecting rods. The pot-shaped arc plate is mainly attached to this component for fixation, adjustment of weld height difference, etc., and serves as a load-bearing platform for the steel block. It has a simple structure, complete functions, and is more robust. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 This is a side sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the division of the pot-shaped arc plate according to the present invention.

[0025] The components include: 1. Platform base; 2. Small ring component; 3. Large ring component; 4. Steel pipe; 5. First locking block; 6. Inclined pad block; 7. Top plate; 8. Foot steel plate; 9. Middle arc plate; 10. Joint locking plate; 11. Joint piece; 12. Conical bolt; 13. Stop block; 14. Second locking block; 15. Horizontal connecting rod. Detailed Implementation

[0026] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0027] Example 1

[0028] according to Figure 1 , 2As shown in Figure 3, this embodiment proposes a prefabrication construction tool for the top and bottom of a spherical tank with a pot-shaped arc plate, including a platform base 1 and a steel structure component. The steel structure component is set on the platform base 1. The steel structure component includes a small ring component 2 and a large ring component 3. The large ring component 3 is set outside the small ring component 2, and the height of the large ring component 3 is lower than the height of the small ring component 2. A steel pipe 4 is provided inside the small ring component 2, and the height of the steel pipe 4 is greater than the height of the small ring component 2. A first locking block 5 and an inclined pad block 6 are provided around the large ring component 3 on the platform base 1.

[0029] The steel pipe 4 is used to position and support the top plate 7 of the pot-shaped arc plate. The first locking block 5 is used to support and limit the foot steel plate 8 of the pot-shaped arc plate. The inclined pad 6 is used to support and adjust the height of the foot steel plate 8. The intermediate arc plate 9 is welded between the top plate 7 and the foot steel plate 8, and the intermediate arc plate 9 is aligned with the top plate 7 and the foot steel plate 8 by a seam-aligning tool.

[0030] Platform base 1 provides a stable foundation for the entire prefabrication process.

[0031] The steel structural components are the main platform structural components for the prefabrication of the curved plate. They are divided into upper and lower layers. The small ring component 2 in the middle is the structure of the higher layer, while the large ring component 3 on the outside is the structure of the lower layer. The pot-shaped curved plate is mainly attached to this platform for fixation, adjustment of weld height difference, adjustment of curvature, etc. It is also the load-bearing platform for the steel blocks and is the foundation and core of the entire prefabrication work and method.

[0032] The steel pipe 4 is used to fix the top plate 7 at the very top of the pot-shaped arc plate, and plays a role in positioning and support. When using it, a stop block 13 needs to be welded at the top plate 7, and then the steel pipe 4 can be inserted between the stop blocks 13 to fix it.

[0033] The first locking block 5 serves to restrict the position of the foot steel plate 8 and also provides some support for the foot steel plate 8. When the foot steel plate 8 is hoisted in, it can be positioned by simply inserting it into the first locking block 5.

[0034] The inclined shims 6 are used to adjust the height of the foot steel plate 8 so that the gap between the two plates meets the welding requirements. The inclined shims 6 on the inner and outer sides can be adjusted simultaneously.

[0035] The seam-fitting tool includes a seam-fitting positioning plate 10 and a seam-fitting piece 11. The seam-fitting positioning plate 10 is used to weld at the seam of the intermediate arc plate 9, the top plate 7, and the foot steel plate 8, and has a central hole. The seam-fitting piece 11 has a tapered bolt 12, which is adapted to the central hole. The tapered bolt 12 is used to connect the seam-fitting piece 11 and the seam-fitting positioning plate 10, and the insertion depth is controlled to adjust the height difference of the seam. In use, the intermediate arc plate 9 is hoisted into position, the seam-fitting positioning plate 10 is welded on the outside, the seam-fitting piece 11 is adapted to the seam-fitting positioning plate 10, and the depth is adjusted by inserting the tapered bolt 12. After adjusting the height difference and seam width, the seam gap is welded.

[0036] The inner side of the top plate 7 is provided with a stop block 13, and the upper end of the steel pipe 4 is used to insert between the stop blocks 13 for positioning and fixation. In use, the stop block 13 needs to be welded to the top plate 7, and then the steel pipe 4 is inserted between the stop blocks 13 to fix it.

[0037] A second locking block 14 is provided on the platform base 1 below the small ring component 2, and multiple sets of the second locking blocks 14 are arranged at equal included angles around the center of the small ring component 2. The second locking blocks 14 are used to support and limit the lower end of the steel pipe 4, ensuring that the steel pipe 4 does not shift or deviate.

[0038] A horizontal connecting rod 15 connects the small ring component 2 and the large ring component 3. Multiple sets of horizontal connecting rods 15 are arranged at equal angles around the center of the small ring component. The small ring component 2 and the large ring component 3 are connected as a whole by the horizontal connecting rods 15. The horizontal connecting rods 15 connect the small ring component 2 and the large ring component 3 into a whole, making the overall platform more stable.

[0039] The inclined shim 6 is a right-angled triangle, and it is located on both the inner and outer sides of the foot plate 8. The height of the foot plate 8 can be adjusted simultaneously from both sides. The inclined shim 6 is used to adjust the height of the foot plate 8 so that the gap between the two plates meets the welding requirements. The inclined shims 6 on both the inner and outer sides can be adjusted at the same time.

[0040] Example 2

[0041] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a method for prefabricating the upper and lower bottom pot-shaped arc plates of a spherical tank, including the following steps:

[0042] S1: First, weld the stop block 13 onto the top plate 7, then insert the top plate 7 along the stop block 13 onto the steel pipe 4 and position it; before inserting the top plate 7 onto the steel pipe 4, insert the lower end of the steel pipe 4 into the second locking block 14 to fix the position of the steel pipe 4; ensure that the steel pipe 4 does not shift or deviate.

[0043] S2: Insert the steel plate 8 of the foot of the pot-shaped arc plate into the first locking block 5 around the platform base 1, and move the inclined pad 6 to adjust the height difference, adjust the joint width and height difference, and weld the joint; improve the assembly quality.

[0044] S3: After welding is completed, hoist the middle arc plate 9 into position, weld the seam clamping plate 10 on the outer side, and use the seam clamping piece 11 to fit the seam clamping plate 10. Insert the tapered bolt 12 to adjust the depth, adjust the height difference and seam width, and then weld the seam gap. Perform seam alignment, adjust the height difference and seam width to further improve the welding quality.

[0045] This invention uses steel pipe 4 to support and position the top plate 7 of the pot-shaped arc plate, and the first locking block 5 on the platform base 1 to support and limit the foot steel plate 8 of the pot-shaped arc plate. The height difference is adjusted by moving inclined pads 6, thus adjusting the joint width and height difference. Welding at the joint facilitates fixing the position of the top plate 7 and the foot steel plate 8, and adjusts the joint height difference, improving assembly quality. Furthermore, this invention welds a joint locking plate 10 at the joint between the middle arc plate 9, the top plate 7, and the foot steel plate 8. This, along with a joint plate 11 and a conical bolt 12, is inserted for connection. Adjusting the insertion depth of the conical bolt 12 allows for joint calibration, adjusting the height difference and joint width, further improving welding quality. Simultaneously, the steel structure component of this invention consists of a small ring component 2 and a large ring component 3, combined with a horizontal connecting rod 15. The pot-shaped arc plate is mainly attached to this component for fixation, adjusting weld height differences, etc., serving as a load-bearing platform for the steel block. The structure is simple, functional, and more robust.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for prefabricating the upper and lower bottom pot-shaped arc plates of a spherical tank, using a tool for prefabricating the upper and lower bottom pot-shaped arc plates of a spherical tank, characterized in that... Includes the following steps: S1: First, weld the stop block (13) onto the top plate (7), then insert the top plate (7) along the stop block (13) onto the steel pipe (4) and position it. S2: Insert the steel plate (8) of the foot of the pot-shaped arc plate into the first locking block (5) around the platform base (1), and move the inclined pad (6) to adjust the height difference, adjust the joint width and height difference, and weld the joint; S3: After the welding is completed, the middle arc plate (9) is hoisted into place, and the seam clamping plate (10) is welded on the outside. The seam clamping plate (10) is adapted by the seam plate (11), and the depth is adjusted by inserting the tapered bolt (12). After adjusting the height difference and seam width, the seam gap is welded. The prefabrication construction tool for the upper and lower bottom of the spherical tank includes a platform base (1) and a steel structure component. The steel structure component is located on the platform base (1). The steel structure component includes a small ring component (2) and a large ring component (3). The large ring component (3) is located outside the small ring component (2), and the height of the large ring component (3) is lower than the height of the small ring component (2). A steel pipe (4) is provided on the inner side of the small ring component (2), and the height of the steel pipe (4) is greater than the height of the small ring component (2). A first locking block (5) and an inclined pad block (6) are provided around the large ring component (3) on the platform base (1). The steel pipe (4) is used to position and support the top plate (7) of the pot-shaped arc plate. The first locking block (5) is used to support and limit the foot steel plate (8) of the pot-shaped arc plate. The inclined pad (6) is used to support and adjust the height of the foot steel plate (8). The middle arc plate (9) is welded between the top plate (7) and the foot steel plate (8). The middle arc plate (9) is joined with the top plate (7) and the foot steel plate (8) by a joining tool. The seam fitting tool includes a seam fitting plate (10) and a seam fitting piece (11). The seam fitting plate (10) is used to weld at the seam of the middle arc plate (9), the top plate (7), and the foot steel plate (8). The seam fitting plate (10) has a central hole. The seam fitting piece (11) has a tapered bolt (12) that is adapted to the central hole. The tapered bolt (12) is used to connect the seam fitting piece (11) and the seam fitting plate (10) and control the insertion depth to adjust the height difference of the seam.

2. The prefabrication construction method for the top and bottom pot-shaped arc plates of a spherical tank according to claim 1, characterized in that: The inner side of the top plate (7) is provided with a stop block (13), and the upper end of the steel pipe (4) is used to insert between the stop blocks (13) for positioning and fixing.

3. The prefabrication construction method for the top and bottom pot-shaped arc plates of a spherical tank according to claim 2, characterized in that: A second locking block (14) is provided on the platform base (1) below the small ring component (2), and multiple sets of the second locking blocks (14) are provided at equal included angles around the center of the small ring component (2). The second locking block (14) is used to support the lower end of the limiting steel pipe (4).

4. The prefabrication construction method for the top and bottom pot-shaped arc plates of a spherical tank according to claim 1, characterized in that: A horizontal connecting rod (15) connects the small ring component (2) and the large ring component (3), and multiple sets of horizontal connecting rods (15) are provided around the center of the small ring component at equal angles. The small ring component (2) and the large ring component (3) are connected as a whole by the horizontal connecting rods (15).

5. The method for prefabricating the upper and lower bottom pot-shaped arc plates of a spherical tank according to claim 1, characterized in that: The inclined pad (6) is a right-angled triangle, and the inclined pad (6) is located on the inner and outer sides of the foot plate (8), and the height of the foot plate (8) can be adjusted simultaneously from the inner and outer sides.

6. The prefabrication construction method for the top and bottom pot-shaped arc plates of a spherical tank according to claim 3, characterized in that: In S1, before inserting the top plate (7) onto the steel pipe (4), the lower end of the steel pipe (4) is inserted into the second locking block (14) to fix the position of the steel pipe (4).

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