Support frame for inverted construction of large storage tank

Abstract

The utility model belongs to the technical field of installation of large storage tanks, and particularly relates to a supporting frame for inverted construction of a large storage tank, which is safe and reliable. The device comprises a vertically-arranged supporting column, a lug plate is arranged at the top end of the supporting column, and a through hole used for installing a chain block or an electric block hook is formed in the lug plate. A horizontally-arranged supporting roller is rotationally installed on the supporting column, located on one side of the supporting column and protrudes outwards. And the peripheral surfaces of the supporting rollers serve as supporting surfaces. And safety accidents caused by low welding quality can be effectively avoided. And for a side plate with a factory coating, coating damage caused by welding can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of installation of large storage tanks, and in particular relates to a support frame for inverted installation of large storage tanks. Background Art

[0002] Large storage tanks refer to vertical tanks used for storing oil or gas in the petrochemical industry. The capacity of large storage tanks is usually more than 100 cubic meters, and they are installed on site using stainless steel plates, stainless steel brackets, etc. The inverted installation method for large storage tanks is a relatively mature construction method, that is, lifting with a hand winch or hydraulic device, and assembling layer by layer from top to bottom.

[0003] The following steps are usually used to install large storage tanks:

[0004] The first step is to install the tank bottom plate, fix the support base on the bottom plate, place the side plate vertically on the support base, and bend it toward the center of the bottom plate.

[0005] The second step is to weld multiple side panels end to end in sequence to form a cylindrical ring plate, then install the expansion ring on the inner wall of the ring plate through a door-shaped clamp so that the expansion ring and the ring plate are arranged concentrically, which can keep the shape of the ring plate unchanged during the lifting process, and then install the top cover on the ring plate.

[0006] In the third step, the expansion ring is connected to the hydraulic jacking device through a chain. A sprocket is installed on the piston rod of the hydraulic jacking device. Through the cooperation of the hydraulic jacking device, chain and sprocket, the ring plate and the top cover are lifted to a certain height h, where h is greater than the height of the side plate, and then the lower ring plate is placed, assembled and welded.

[0007] The fourth step is to place the side panels vertically on the support seat and bend them toward the center of the bottom plate; through the cooperation of the hydraulic jacking device, chain and sprocket, lower the welded ring plate and top cover, and weld the upper and lower adjacent ring plates together.

[0008] The fifth step is to remove the expansion ring and install it on the inner wall of the ring plate to be lifted through the door-shaped card so that the two are arranged concentrically. Then, through the cooperation of the hydraulic jacking device, chain and sprocket, the welded ring plate and top cover are lifted to a certain height h, where h is greater than the height of the side plate.

[0009] Repeat steps 4 and 5 until the last layer of ring plate is connected to the adjacent upper layer of ring plate by welding, and then lower the welded ring plate and top cover by the cooperation of hydraulic jacking device, chain and sprocket, and weld the lower end of the last layer of ring plate to the bottom plate.

[0010] Since the expansion ring and the ring plate are fixed by the door-shaped clamp, the door-shaped clamp is welded to the inner wall of the ring plate. In the process of lifting or lowering the welded ring plate and the top cover, the force on the door-shaped clamp and the ring plate increases with each additional layer of ring plate, and the connection stability between the door-shaped clamp and the inner wall of the ring plate needs to be ensured. The door-shaped clamp and the inner wall of the ring plate are usually welded together by full welding, which has high requirements for the welding effect. If the welding is not in place, it is easy to cause safety accidents. Utility Model Content

[0011] The technical problem to be solved by the utility model is to provide a support frame for the inverted construction of large storage tanks, which is safe and reliable.

[0012] The technical solution adopted by the utility model to solve its technical problems is: a support frame for the inverted construction of a large storage tank includes a vertically arranged support column, a lug plate is arranged on the top of the support column, and a through hole for installing a hand winch or an electric winch hook is arranged on the lug plate; a horizontally arranged support roller is rotatably installed on the support column, the support roller is located on one side of the support column and protrudes outward; the outer peripheral surface of the support roller serves as a supporting surface.

[0013] Furthermore, a diagonal brace is provided on the side of the support column opposite to the support roller, and the upper end of the diagonal brace is connected to the support column;

[0014] Two diagonal braces are provided, and the two diagonal braces take the axis of the supporting column as the symmetry axis to form an axisymmetric structure.

[0015] Furthermore, the upper end of the diagonal brace is connected to the support column by welding.

[0016] Furthermore, the ear plate is connected to the support column by welding.

[0017] Furthermore, the support columns, ear plates, support rollers and diagonal braces are all made of steel.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a support frame for inverted installation of large storage tanks, which is safe and reliable. It can effectively avoid safety accidents caused by poor welding quality. For side panels with factory coating, it can reduce coating damage caused by welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view structural diagram of the foundation, bottom plate, support seat, support frame, bracket and side plate;

[0020] Figure 2 It is a side view structural diagram of the foundation, bottom plate, support seat, support frame, bracket and side plate;

[0021] Figure 3 It is the main view of the support seat;

[0022] Figure 4 is a top view of the support seat;

[0023] Figure 5 It is a three-dimensional diagram of the utility model;

[0024] Figure 6 It is a top view of the utility model;

[0025] Figure 7 It is a schematic diagram of the position of the bracket and the side panel;

[0026] Figure 8 is a side view of the bracket (wherein the inner adjustment bolt and the outer adjustment bolt are not shown);

[0027] Figure markings: 1-base plate; 2-support seat; 201-first support vertical plate; 2011-first arc-shaped trough body; 202-second support vertical plate; 2021-second arc-shaped trough body; 3-support frame; 301-support column; 302-diagonal brace; 303-support roller; 304-ear plate; 4-bracket; 401-support plate; 402-inner limit plate; 403-outer limit plate; 404-rib plate; 405-inner adjusting bolt; 406-outer adjusting bolt; 407-reinforcement plate; 5-side plate; 6-foundation. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] The self-limiting inverted installation method of a large storage tank comprises the following steps:

[0030] S10, a circular base plate 1 is installed on the foundation 6, and a supporting mechanism is installed on the base plate 1, wherein the supporting mechanism is provided with multiple groups, and the multiple groups of supporting mechanisms are evenly distributed along the circumference of the base plate 1; the supporting mechanism includes a supporting seat 2 and a supporting frame 3 used in conjunction with each other; the supporting seat 2 is provided with an arc-shaped placement groove with the same bending degree as the side plate 5, and the arc-shaped placement groove opens upward and bends toward the center of the base plate 1; the arc-shaped placement grooves on the supporting seat 2 in the multiple groups of supporting mechanisms form a circular structure concentric with the base plate 1 along their own extension direction; the supporting frame 3 has a supporting surface for supporting the side plate 5, and the arc-shaped placement groove and the supporting surface are arranged at intervals along the direction from the edge to the center of the base plate 1;

[0031] S20, vertically placing the side plate 5 in the arc-shaped placement groove and bending it toward the center of the bottom plate 1 so that the supporting surface contacts the inner wall of the side plate 5; welding multiple side plates 5 end to end in sequence to form a cylindrical ring plate; installing a top cover on the top of the ring plate;

[0032] S30, install the bracket 4 at the lower part of the side plate 5 and support the side plate 5; connect the support frame 3 and the bracket 4 by a hand chain hoist or an electric hoist, and lift the ring plate and the top cover together by h, where h is greater than the height of the side plate 5;

[0033] S40, vertically placing the side plate 5 in the arc-shaped placement groove and bending it toward the center of the bottom plate 1 so that the supporting surface contacts the inner wall of the side plate 5; welding the multiple side plates 5 end to end in sequence to form a cylindrical ring plate;

[0034] S50, install the bracket 4 at the lower part of the side plate 5 and support the side plate 5; lower the welded ring plate and top cover by a hand chain hoist or an electric hoist, temporarily reinforce the welded ring plate and top cover by a bracket, remove the bracket 4 located at the lower part of the side plate 5 adjacent to the upper ring plate, butt-join the upper and lower adjacent ring plates and weld them; then lift the welded ring plate and top cover together by a hand chain hoist or an electric hoist to a height h, where h is greater than the height of the side plate 5;

[0035] S60, repeat step S50 until the last layer of ring plate is butt-jointed with the adjacent upper layer of ring plate and then welded together, then lower the welded ring plate and top cover by a hand hoist or electric hoist, temporarily reinforce the welded ring plate and top cover by a bracket, remove the bracket 4 located at the bottom of the side plate 5 of the adjacent upper layer of ring plate, and weld the lower end of the last layer of ring plate to the bottom plate 1.

[0036] The bottom plate 1 provides installation support for the support seat 2 and the support frame 3. The arc-shaped placement groove on the support seat 2 in the multiple support mechanisms forms a circular structure concentric with the bottom plate 1 along its own extension direction, providing a placement reference for the side plate 5, so that multiple side plates 5 are connected end to end in sequence to form a cylindrical ring plate concentric with the bottom plate 1. Through the cooperation of the support frame 3 and the support seat 2, the side plate 5 is placed vertically and stably. When the welded ring plate and top cover are lifted or lowered, stable support is provided for the welded ring plate and top cover.

[0037] Specifically, it includes a vertically arranged support column 301, the top of which is provided with an ear plate 304, and a horizontally arranged support roller 303 is rotatably mounted on the support column 301, the support roller 303 is located on one side of the support column 301 and protrudes outward; the outer peripheral surface of the support roller 303 serves as a support surface. When the side plate 5 is vertically placed in the arc placement groove and bent toward the center of the bottom plate 1, the outer peripheral surface of the support roller 303 contacts the inner wall of the side plate 5 to support the side plate 5. The support column 301 is vertically arranged on the bottom plate 1, and when the welded ring plate and top cover are lifted or lowered, the welded ring plate and top cover are provided with stable support. It has the advantages of stable support, safety and reliability. Preferably, the top of the support column 301 is connected to the ear plate 304 by bolts or welding. It should be ensured that the supporting roller 303 protrudes from the outer side of the supporting column 301 , that is, the side of the supporting column 301 close to the edge of the bottom plate 1 .

[0038] Preferably, a diagonal brace 302 is provided on the side of the support column 301 opposite to the support roller 303, and the upper end of the diagonal brace 302 is connected to the support column 301; two diagonal braces 302 are provided, and the two diagonal braces 302 take the axis of the support column 301 as the symmetry axis, forming an axisymmetric structure. The diagonal brace 302 is located between the bottom plate 1 and the support column 301, and the diagonal brace 302 is provided to improve the stability of the support column 301. The upper end of the diagonal brace 302 is connected to the support column 301 by bolts or welding, and there is a gap between the lower end of the diagonal brace 302 and the support column 301. The ear plate 304 is connected to the support column 301 by bolts or welding.

[0039] Specifically, the bracket 4 includes a horizontally arranged support plate 401, and the upper surface of the support plate 401 is provided with an inner limit plate 402 and an outer limit plate 403 arranged vertically; the inner limit plate 402 and the outer limit plate 403 are arranged at intervals along the direction from the center to the edge of the bottom plate 1, and form a side plate placement groove with an opening facing upward; it also includes a rib plate 404 vertically arranged between the upper surface of the support plate 401 and the inner limit plate 402, and the rib plate 404 is located outside the side plate placement groove; the ear plate 304 is connected to the rib plate 404 through a hand chain hoist or an electric hoist. The inner limit plate 402 and the outer limit plate 403 are both welded to the upper surface of the support plate 401. The upper surface of the support plate 401 and the inner limit plate 402 are both welded to 404. The ear plate 304 and the rib plate 404 are both provided with through holes for installing a hand chain hoist or an electric hoist hook. The side plate 5 is located in the side plate placement groove, the supporting plate 401 supports the bottom of the side plate 5 , and the inner limiting plate 402 and the outer limiting plate 403 limit the inner and outer sides of the side plate 5 respectively.

[0040] Preferably, it further comprises an inner adjusting bolt 405 and an outer adjusting bolt 406; the inner adjusting bolt 405 is mounted on the inner limit plate 402, and the outer adjusting bolt 406 is mounted on the outer limit plate 403; the inner adjusting bolt 405 and the outer adjusting bolt 406 are both inserted into the side plate placement slot; two outer adjusting bolts 406 are provided, and the two outer adjusting bolts 406 are arranged at intervals along the length direction of the side plate placement slot; the inner adjusting bolt 405 is located between the two outer adjusting bolts 406. By adjusting the inner adjusting bolt 405 and the outer adjusting bolt 406, the side plate 5 is clamped to ensure the safety of the lifting and lowering process.

[0041] As a further preferred embodiment, two inner adjusting bolts 405 are provided, and the rib plate 404 is located between the two inner adjusting bolts 405 .

[0042] As a further preferred embodiment, a reinforcing plate 407 is further provided vertically between the upper surface of the support plate 401 and the inner limit plate 402, and the reinforcing plate 407 is located outside the side plate placement slot; two reinforcing plates 407 are provided at intervals along the length direction of the side plate placement slot, and the rib plate 404 is located between the two reinforcing plates 407. The upper surface of the support plate 401 and the inner limit plate 402 are both welded to the reinforcing plate 407. By providing the reinforcing plate 407, the structural strength of the bracket 4 is improved.

[0043] The support seat 2 may be a block structure. Preferably, the support seat 2 includes a first support vertical plate 201 and a second support vertical plate 202 welded to the bottom plate 1. One end of the first support vertical plate 201 in the length direction is connected to one end of the second support vertical plate 202 in the length direction, and forms an L-shaped structure opening toward the center of the bottom plate 1. The arc placement groove includes a first arc groove body 2011 and a second arc groove body 2021 that are connected. The first arc groove body 2011 is arranged on the top of the first support vertical plate 201, and the second arc groove body 2021 is arranged on the top of the second support vertical plate 202. The first arc groove body 2011 and the second arc groove body 2021 are both bent toward the center of the bottom plate 1. One end of the first support vertical plate 201 in the length direction and one end of the second support vertical plate 202 in the length direction can be connected by welding. Preferably, the support seat 2 of the L-shaped structure is an integral structure formed in one piece.

[0044] Preferably, the support seat 2 is arranged corresponding to at least one support frame 3.

[0045] Preferably, two support seats 2 are provided in each group of the support mechanisms, the two support seats 2 are spaced apart along the circumference of the base plate 1 , and the support frame 3 is located between the two support seats 2 .

[0046] Preferably, the rib plate 404 is located below the ear plate 304. Since the side plate 5 is close to the support frame 3 and the rib plate 404 is located below the ear plate 304, during the lifting and lowering process, the force of the electric hoist or hand chain hoist is closer to vertical, the direction of the force is more reasonable, the shaking is reduced, and the safety is improved.

[0047] The support column 301, the ear plate 304, the support roller 303 and the diagonal brace 302 can all be made of cemented carbide. Preferably, the support column 301, the ear plate 304, the support roller 303 and the diagonal brace 302 are all made of steel.

[0048] The embodiments of this specific implementation are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. All equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. The support frame for the inverted construction of large storage tanks is characterized by: The invention comprises a vertically arranged support column (301), wherein the top end of the support column (301) is provided with an ear plate (304), and the ear plate (304) is provided with a through hole for installing a hand chain hoist or an electric hoist hook; a horizontally arranged support roller (303) is rotatably mounted on the support column (301), and the support roller (303) is located on one side of the support column (301) and protrudes outward; and the outer peripheral surface of the support roller (303) serves as a supporting surface.

2. The support frame for inverted installation of large storage tanks as claimed in claim 1, characterized in that: A diagonal brace (302) is provided on the side of the support column (301) opposite to the support roller (303), and the upper end of the diagonal brace (302) is connected to the support column (301); Two diagonal braces (302) are provided, and the two diagonal braces (302) are symmetrically arranged with the axis of the support column (301) as the axis, forming an axisymmetric structure.

3. The support frame for inverted installation of large storage tanks as claimed in claim 2 is characterized in that: The upper end of the diagonal brace (302) is connected to the support column (301) by welding.

4. The support frame for inverted installation of large storage tanks as claimed in claim 1, characterized in that: The ear plate (304) is connected to the support column (301) by welding.

5. The support frame for inverted installation of large storage tanks as claimed in claim 2, characterized in that: The support column (301), the ear plate (304), the support roller (303) and the diagonal brace (302) are all made of steel.

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