Method for assembling roof of storage tank

Abstract

The application provides a kind of storage tank roof splicing method, this method includes: determining step, according to design drawing determines the height of auxiliary support;Auxiliary support installation step, determine the center position on the tank bottom plate, and install auxiliary support on the tank bottom plate;Fixed step, tank top center plate is placed on the top of auxiliary support and fixed;Positioning fixture installation step, install positioning fixture on the angle steel ring on the top of tank side plate;Connecting step, the first end of arc roof is inserted into positioning fixture, then the first end of arc roof is connected with angle steel ring, then the second end of arc roof is connected with tank top center plate;Repeat positioning fixture installation step and connecting step to install multiple arc roof in turn until the installation of storage tank roof is completed.In the application, the arc roof can be accurately positioned, the installation quality of the dome is improved, the splicing precision is effectively improved, the splicing time is shortened, and the labor intensity and safety risk are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of storage tank installation, in particular to a storage tank roof splicing method. BACKGROUND

[0002] In large storage tanks, a dome is usually needed to be installed to protect the stored materials and ensure pressure balance. The weight and volume of the dome are very large, and it needs to be spliced on site, which requires team cooperation and precise positioning. The inverted method is a common method for splicing the dome on site, but when installing the dome, the arc-shaped roof plates cannot be accurately positioned, which reduces the installation quality of the dome. SUMMARY

[0003] In view of this, the present application provides a storage tank roof splicing method, which aims to solve the problem of inaccurate positioning of each arc-shaped roof plate in the dome in the prior art.

[0004] The present application provides a storage tank roof splicing method, which comprises the following steps: a determining step, determining the height of the auxiliary support according to the design drawing; an auxiliary support installation step, determining the center position on the storage tank bottom plate and installing the auxiliary support on the storage tank bottom plate; a fixing step, placing the tank top center plate on the top of the auxiliary support and fixing it; a positioning fixture installation step, installing the positioning fixture on the angle steel ring on the top of the storage tank side plate; a connecting step, inserting the first end of the arc-shaped roof plate into the positioning fixture, connecting the first end of the arc-shaped roof plate with the angle steel ring, and then connecting the second end of the arc-shaped roof plate with the tank top center plate; and repeating the positioning fixture installation step and the connecting step to install multiple arc-shaped roof plates in turn until the storage tank roof is installed.

[0005] Further, in the above-mentioned storage tank roof splicing method, in the determining step, the auxiliary support is at least three, and the height of each auxiliary support is equal.

[0006] Further, in the above-mentioned storage tank roof splicing method, in the auxiliary support installation step, the center position is determined on the storage tank bottom plate according to the design drawing, and the center position is reviewed, after the review is completed, each auxiliary support is uniformly arranged with the center position as the center, and each auxiliary support is welded with the storage tank bottom plate.

[0007] Further, in the above-mentioned storage tank roof splicing method, when reviewing, multiple times of pulling lines from one side to the other side of the storage tank side plate are performed to detect whether the intersection of each pulling line coincides with the center position, and if it coincides, it is determined that the center position is correct.

[0008] Further, in the above-mentioned storage tank roof splicing method, in the fixing step, the center of the tank top center plate is aligned with the center position.

[0009] Further, in the tank top plate splicing method, the positioning fixture installation step further comprises: a setting sub-step of setting a distance meter on the auxiliary support at a position in line with the angle steel ring, and the position of the distance meter is on the same vertical line as the center position; a checking sub-step of checking whether the position of the distance meter is accurate; and an installation sub-step of installing the positioning fixture on the angle steel ring after the position of the distance meter is accurate.

[0010] Further, in the tank top plate splicing method, in the checking sub-step, the distance between the distance meter and the angle steel ring is measured, and it is determined whether the measured distance is equal to the radius of the tank bottom plate; if the measured distance is equal to the radius of the tank bottom plate, it indicates that the position of the distance meter is accurate; if the measured distance is not equal to the radius of the tank bottom plate, it indicates that the position of the distance meter is not accurate, and the position of the distance meter is adjusted; the above steps are repeated until the position of the distance meter is accurate.

[0011] Further, in the tank top plate splicing method, the positioning fixture is L-shaped, the first end of the positioning fixture is connected perpendicularly to the angle steel ring, the second end of the positioning fixture is a free end and is parallel to the angle steel ring, and a gap between the second end of the positioning fixture and the angle steel ring forms an accommodation space.

[0012] Further, in the tank top plate splicing method, in the connecting step, the first end of the arc-shaped top plate is inserted into the accommodation space, the distance between the distance meter and the first end of the arc-shaped top plate is measured, and it is determined whether the measured distance is equal to the radius of the tank bottom plate; if the measured distance is equal to the radius of the tank bottom plate, it indicates that the position of the first end of the arc-shaped top plate is accurate, the first end of the arc-shaped top plate is connected to the angle steel ring, and the second end of the arc-shaped top plate is connected to the center tank top plate; if the measured distance is not equal to the radius of the tank bottom plate, it indicates that the position of the first end of the arc-shaped top plate is not accurate, and the position of the first end of the arc-shaped top plate is adjusted; the above steps are repeated until the position of the first end of the arc-shaped top plate is accurate.

[0013] Further, in the tank top plate splicing method, when the position of the first end of the arc-shaped top plate is adjusted, a wedge is inserted into the accommodation space to adjust the position of the first end of the arc-shaped top plate.

[0014] In the application, the auxiliary support is installed on the tank bottom plate, then the tank top center plate is fixed with the top of the auxiliary support, the positioning fixture is installed on the angle steel ring at the top of the tank side plate, the first end of the arc-shaped top plate is inserted into the positioning fixture, and then the arc-shaped top plate is connected with the angle steel ring and the tank top center plate, so that the tank top center plate is installed after the height of the auxiliary support is determined, the position of the tank top center plate can be accurately determined, and the first end of the arc-shaped top plate is positioned by the positioning fixture, so that the position of the first end of the arc-shaped top plate is accurate. Since the position of the tank top center plate is accurate, the position of the first end of the arc-shaped top plate is also accurate, so that the arc-shaped top plate can be accurately positioned, the installation quality of the dome is improved, and the problem of inaccurate positioning of each arc-shaped top plate in the dome in the prior art is solved. The method can effectively improve the splicing accuracy, shorten the splicing time, improve the production efficiency and quality, reduce the labor intensity and safety risk, and is simple to operate, and improves the practicality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting of the application. Like reference numerals designate corresponding parts throughout the several views. In the drawings:

[0016] Figure 1 The flow chart of the tank top plate splicing method provided by the embodiment of the application is shown in the figure;

[0017] Figure 2 In the tank top plate splicing method provided by the embodiment of the application, the top view structure diagram of the tank is shown in the figure;

[0018] Figure 3 In the tank top plate splicing method provided by the embodiment of the application, the side view structure diagram of the tank is shown in the figure;

[0019] Figure 4 For Figure 3 The local enlarged view of A in the figure. DETAILED DESCRIPTION

[0020] Exemplary embodiments of the present disclosure will be described below in greater detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0021] Referring toFigure 1 , Figure 1 The flow chart of the tank top splicing method provided by the embodiment of the application is shown in the figure. As shown in the figure, the tank top splicing method comprises the following steps:

[0022] The determining step S1 comprises determining the height of the auxiliary support according to the design drawing.

[0023] Specifically, the height of the auxiliary support is calculated according to the design drawing, and the auxiliary support can be a channel steel.

[0024] Referring to Figure 2 and Figure 3 , the auxiliary support 1 is at least three, and the height of each auxiliary support 1 is equal.

[0025] The auxiliary support mounting step S2 comprises determining the center position on the tank bottom plate and mounting the auxiliary support on the tank bottom plate.

[0026] Specifically, referring to Figure 2 and Figure 3 , the center position 2 is determined on the tank bottom plate according to the design drawing, and the center position 2 is reviewed. After the review is completed, each auxiliary support 1 is uniformly arranged with the center position 2 as the center, and each auxiliary support 1 is welded with the tank bottom plate.

[0027] During the review, the pull lines are pulled from one side of the tank side plate to the other side for multiple times, and it is detected whether the intersection points of the pull lines coincide with the center position. If they coincide, it is determined that the center position is correct. If they do not coincide, the center position is adjusted, and the review is performed again. The step is repeated until the intersection points of the pull lines coincide with the center position.

[0028] In the embodiment, the three auxiliary supports 1 are distributed in a triangular shape with the center position 2 as the center, and the bottom of each auxiliary support 1 is welded and connected with the tank bottom plate.

[0029] The fixing step S3 comprises placing the tank top center plate on the top of the auxiliary support and fixing it.

[0030] Specifically, referring to Figure 2 and Figure 3 , the tank top center plate is aligned with the center position, that is, the center of the tank top center plate 3 is aligned with the center position 2. When aligned, a plumb line can be arranged at the center of the tank top center plate. If the plumb line is on the same vertical line with the center position 2, it indicates that the center of the tank top center plate 3 is aligned with the center position 2. Otherwise, the position of the tank top center plate is adjusted until the center of the tank top center plate 3 is aligned with the center position 2. Then, the tank top center plate 3 is fixed with the top of each auxiliary support 1.

[0031] The positioning fixture mounting step S4 comprises mounting the positioning fixture on the angle steel ring at the top of the tank side plate.

[0032] Specifically, the positioning jig installation step S4 further comprises:

[0033] A sub-step S41 is provided, in which a distance meter is arranged on the auxiliary support and at a position in the same horizontal plane as the angle steel ring, and the position of the distance meter is in the same vertical line as the center position.

[0034] Specifically, referring to Figures 2 to 4 A support plate is arranged on the auxiliary support 1 and at a position in the same horizontal plane as the position of the angle steel ring 4, and the distance meter 7 is arranged on the support plate, and the position of the distance meter 7 is in the same vertical line as the center position 2.

[0035] It should be noted that the angle steel ring 4 is arranged on the top of the storage tank side plate 8, the angle steel ring 4 is annular and made of angle steel, the first end of the angle steel ring 4 is connected with the storage tank side plate 8, and the second end of the angle steel ring 4 is perpendicular to the storage tank side plate 8 and in the same horizontal plane as the end surface of the top of the storage tank side plate 8.

[0036] Preferably, the distance meter is a laser distance meter.

[0037] A sub-step S42 is provided for checking whether the position of the distance meter is accurate.

[0038] Specifically, it is checked whether the position of the distance meter 7 is in the same vertical line as the center position 2.

[0039] When checking, the distance between the position of the distance meter itself and the angle steel ring 4 is measured by using the distance meter 7, and it is judged whether the measured distance is equal to the radius of the bottom plate of the storage tank.

[0040] If the measured distance is equal to the radius of the bottom plate of the storage tank, it indicates that the position of the distance meter 7 is accurate.

[0041] If the measured distance is not equal to the radius of the bottom plate of the storage tank, it indicates that the position of the distance meter 7 is not accurate, and the position of the distance meter 7 is adjusted at this time. The above steps are repeated until the position of the distance meter 7 is accurate. Specifically, the distance between the position of the distance meter itself and the angle steel ring 4 is measured by using the distance meter 7 again, and it is judged whether the measured distance is equal to the radius of the bottom plate of the storage tank. If the measured distance is not equal to the radius of the bottom plate of the storage tank, the position of the distance meter 7 is adjusted again, and the above steps are repeated until the measured distance is equal to the radius of the bottom plate of the storage tank, i.e., it is determined that the position of the distance meter 7 is accurate.

[0042] A sub-step S43 is provided for installing a positioning jig on the angle steel ring after the position of the distance meter is accurate.

[0043] Specifically, referring to Figures 2 to 4The positioning fixture 5 is in L shape, the first end of the positioning fixture 5 is connected with the second end of the angle steel ring 4 perpendicularly, the second end of the positioning fixture 5 is a free end, and the second end of the positioning fixture 5 is parallel to the second end of the angle steel ring 4, and the gap between the second end of the positioning fixture 5 and the second end of the angle steel ring 4 forms an accommodation space.

[0044] Preferably, the positioning fixture 5 is two, and the two positioning fixtures 5 are arranged on the second end of the angle steel ring 4 at intervals.

[0045] In the connecting step S5, the first end of the arc-shaped top plate is inserted into the positioning fixture, the first end of the arc-shaped top plate is connected with the angle steel ring, and then the second end of the arc-shaped top plate is connected with the center plate of the tank top.

[0046] Specifically, referring to Figures 2 to 4 The first end of the arc-shaped top plate 6 is inserted into the accommodation space, the distance between the position of the range finder 7 itself and the first end of the arc-shaped top plate 6 is measured by using the range finder 7, and it is judged whether the measured distance is equal to the radius of the tank bottom plate.

[0047] If the measured distance is equal to the radius of the tank bottom plate, it indicates that the position of the first end of the arc-shaped top plate 6 is accurate, the first end of the arc-shaped top plate 6 is connected with the angle steel ring 4, and the second end of the arc-shaped top plate 6 is connected with the center plate 3 of the tank top. Preferably, the first end of the arc-shaped top plate 6 is welded with the angle steel ring 4, and the second end of the arc-shaped top plate 6 is welded with the center plate 3 of the tank top.

[0048] If the measured distance is not equal to the radius of the tank bottom plate, it indicates that the position of the first end of the arc-shaped top plate 6 is not accurate, and the position of the first end of the arc-shaped top plate 6 needs to be adjusted. The above steps are repeated until the position of the first end of the arc-shaped top plate 6 is accurate. Specifically, after adjusting the position of the first end of the arc-shaped top plate 6, the distance between the position of the range finder 7 itself and the first end of the arc-shaped top plate 6 is measured again by using the range finder 7, and it is judged whether the measured distance is equal to the radius of the tank bottom plate. If the measured distance is not equal to the radius of the tank bottom plate, the position of the first end of the arc-shaped top plate 6 is adjusted again. The above steps are repeated until the measured distance is equal to the radius of the tank bottom plate, and it is determined that the position of the first end of the arc-shaped top plate 6 is accurate.

[0049] When adjusting the position of the first end of the arc-shaped top plate 6, the wedge is inserted into the accommodation space to adjust the position of the first end of the arc-shaped top plate 6. Specifically, the wedge is inserted into the gap between the first end of the positioning fixture 5 and the first end of the arc-shaped top plate 6, and the position of the first end of the arc-shaped top plate 6 is pushed by the wedge, thereby realizing the adjustment of the position of the first end of the arc-shaped top plate 6.

[0050] The positioning fixture installation step S4 and the connecting step S5 are repeated to install a plurality of arc-shaped top plates in turn until the installation of the tank top plate is completed.

[0051] In practice, each arc-shaped top plate 6 can have two positioning clamps 5 at its first end.

[0052] As can be seen, in this embodiment, an auxiliary support is installed on the bottom plate of the storage tank, and then the center plate of the tank top is fixed to the top of the auxiliary support. A positioning clamp is installed on the angle steel ring at the top of the side plate of the storage tank. The first end of the arc-shaped top plate is inserted into the positioning clamp, and then the arc-shaped top plate is connected to the angle steel ring and the center plate of the tank top. In this way, the height of the auxiliary support is determined before the center plate of the tank top is installed, which can accurately determine the position of the center plate of the tank top. Then, the positioning clamp is used to position the first end of the arc-shaped top plate, so that the position of the first end of the arc-shaped top plate is accurate. Since the position of the center plate of the tank top is accurate, the position of the first end of the arc-shaped top plate is also accurate. This can accurately position the arc-shaped top plate, improve the installation quality of the dome, and solve the problem of inaccurate positioning of the arc-shaped top plates in the dome in the existing design technology. This method can effectively improve the splicing accuracy, shorten the splicing time, improve production efficiency and quality, reduce labor intensity and safety risks, and is simple to operate, thus improving practicality.

[0053] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0054] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for splicing the top plate of a storage tank, characterized in that, Includes the following steps: Determine the steps and the height of the auxiliary support based on the design drawings; The auxiliary support installation steps are as follows: determine the center position on the bottom plate of the storage tank, and then install the auxiliary support on the bottom plate of the storage tank; The fixing step involves placing the center plate of the tank top on top of the auxiliary support and fixing it in place; The positioning clamp installation steps are as follows: Install the positioning clamp on the angle steel ring at the top of the side plate of the storage tank; The connection steps are as follows: after inserting the first end of the arc-shaped top plate into the positioning clamp, connect the first end of the arc-shaped top plate to the angle steel ring, and then connect the second end of the arc-shaped top plate to the center plate of the tank top. Repeat the positioning clamp installation steps and the connection steps to install multiple arc-shaped top plates in sequence until the tank top plate is installed. The positioning clamp installation step further includes: In the sub-step of setting up, a rangefinder is set on the auxiliary support at a position flush with the angle steel ring, and the position of the rangefinder is on the same vertical line as the center of the circle. The verification sub-step verifies whether the position of the rangefinder is accurate. The installation sub-step involves installing the positioning clamp on the angle steel ring after the rangefinder is accurately positioned. The positioning clamp is L-shaped. The first end of the positioning clamp is perpendicularly connected to the angle steel ring, and the second end of the positioning clamp is a free end and parallel to the angle steel ring. The gap between the second end of the positioning clamp and the angle steel ring forms an accommodating space. In the connection step The first end of the arc-shaped top plate is inserted into the receiving space. The distance between itself and the first end of the arc-shaped top plate is measured using the rangefinder, and it is determined whether the measured distance is equal to the radius of the tank bottom plate. If the measured distance is equal to the radius of the tank bottom plate, it indicates that the position of the first end of the arc-shaped top plate is accurate. Connect the first end of the arc-shaped top plate to the angle steel ring, and connect the second end of the arc-shaped top plate to the center plate of the tank top. If the measured distance is not equal to the radius of the tank bottom plate, it indicates that the position of the first end of the arc-shaped top plate is inaccurate, and the position of the first end of the arc-shaped top plate should be adjusted. Repeat the above steps until the position of the first end of the arc-shaped top plate is accurate.

2. The tank top plate splicing method according to claim 1, characterized in that, In the determination step There are at least three auxiliary supports, and each auxiliary support is of equal height.

3. The method for splicing the tank top plate according to claim 2, characterized in that, In the auxiliary support installation steps The center position is determined on the bottom plate of the storage tank according to the design drawings, and the center position is verified. After verification, the auxiliary supports are evenly arranged around the center position, and each auxiliary support is welded to the bottom plate of the storage tank.

4. The method for splicing the tank top plate according to claim 3, characterized in that, During the verification process, a string is pulled from one side of the tank side plate to the other multiple times to check whether the intersection of each string coincides with the center position of the circle. If they coincide, the center position is determined to be correct.

5. The method for splicing the tank top plate according to claim 1, characterized in that, In the fixing step Align the center of the center plate on the top of the tank with the center of the circle.

6. The method for splicing the tank top plate according to claim 1, characterized in that, In the verification sub-step The distance between itself and the angle steel ring is measured using the rangefinder, and it is determined whether the measured distance is equal to the radius of the tank bottom plate; If the measured distance is equal to the radius of the tank bottom plate, it indicates that the position of the rangefinder is accurate; If the measured distance is not equal to the radius of the tank bottom plate, it indicates that the position of the rangefinder is inaccurate, and the position of the rangefinder should be adjusted. Repeat the above steps until the distance measuring device is positioned accurately.

7. The method for splicing the tank top plate according to claim 1, characterized in that, When adjusting the position of the first end of the arc-shaped top plate A wedge is inserted into the receiving space to adjust the position of the first end of the arc-shaped top plate.

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