Bottom clearance type tank mounting structure

Abstract

The utility model discloses a bottom empty formula tank body mounting structure avoids, including metal tank body, metal tank body includes cylindrical cylinder, lower half spherical head, upper half spherical head, the outer periphery side of cylindrical cylinder is provided with multiple sets of support foot, and each set of support foot includes support casting and arc welding board, the inner side surface welding of arc welding board is in the outer periphery surface of cylindrical cylinder, and the upper section inner side surface welding of support casting is in the outer side surface of arc welding board. Its lateral welding support, easy to install positioning, same support casting and arc welding board, can adjust the support height required in a certain range installation, improve the flexibility of processing and installation, universality, especially, this kind of support structure, effectively promote the anti -seismic, prevent shaking ability, and be favorable for reducing the weld stress of lower half spherical head and the lower end of cylindrical cylinder, and, support foot will not occupy the bottom space of metal tank body, and the bottom connection pipe arrangement application is more flexible.

Description

Technical Field

[0001] This utility model relates to metal tank installation technology in the chemical industry, and in particular to a bottom-vented tank installation structure. Background Technology

[0002] Common support methods for existing vertical tanks include lug type, leg type, and placement seat type. Among them, lug type is suitable for suspending vertical tanks at a high place, but not suitable for the installation of vertical tanks that need to be placed on the ground.

[0003] Support legs and base-mounted types are suitable for installing vertical tanks that require ground placement. Base-mounted types have a more stable structure, but they require custom orders, occupy more space, are more complex to manufacture, and have high requirements for dimensional precision control; otherwise, gaps may exist after the vertical tank is placed, leading to instability and wobbling. Support legs are generally used by directly welding the support components to the tank body, such as... Figure 6 As shown, this illustrates a representative leg-supported tank installation structure in the prior art. The tank 100 is vertically positioned and has a lower hemispherical portion, a middle cylindrical portion, and a top hemispherical portion. Four legs 200 are welded to the bottom of the lower hemispherical portion at their upper ends. These four legs 200 are inclined (closed at the top and flared outwards at the bottom). This installation structure has some drawbacks:

[0004] 1. Because the upper ends of the four support legs 200 are welded to the arc-shaped surface of the lower hemispherical part for positioning, and the lower end face is inclined to the main body of the support leg 200, the processing and installation accuracy requirements are high, and it is difficult to ensure that the tank is in an ideal vertical position after installation.

[0005] 2. For the same type of tank, if the bottom support height is slightly different, the only solution is to design variations in the size of the four support legs 200. Usually, the four support legs 200 are cast, requiring different molds to produce support legs 200 of different sizes, which results in higher costs.

[0006] 3. This type of installation structure is difficult to meet the requirements for higher seismic resistance and anti-swaying.

[0007] 4. The four support legs 200 occupy part of the bottom space of the tank 100, making the bottom pipe arrangement of the tank 100 inflexible.

[0008] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0009] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide a bottom-vented tank installation structure that forms a lateral welded support, is easy to install and position, and has ideal installation flexibility and versatility. In particular, it effectively improves the ability to resist earthquakes and prevent shaking, and helps to reduce the weld stress at the lower end of the hemispherical head and the cylindrical body. Furthermore, the support feet do not occupy the bottom space of the metal tank, and the bottom pipe arrangement is more flexible.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A bottom-sheltered tank installation structure includes a metal tank, the metal tank including a cylindrical body; a lower hemispherical end cap is integrally connected to the lower end of the cylindrical body, and an upper hemispherical end cap is integrally connected to the upper end of the cylindrical body; multiple sets of support feet are provided on the outer periphery of the cylindrical body, each set of support feet including a support casting and an arc-shaped welded plate; the inner side of the arc-shaped welded plate is welded to the outer periphery of the cylindrical body, and the inner side of the upper section of the support casting is welded to the outer side of the arc-shaped welded plate.

[0012] As a preferred embodiment, the inner side of the arc-shaped welding plate has an inner arc surface, the curvature of which matches the outer peripheral side of the cylindrical body.

[0013] As a preferred embodiment, the peripheral side of the support casting is composed of an inner side and two inclined surfaces connected to the two sides of the inner side, with the two inclined surfaces converging at the outer ends to form a V-shaped angle.

[0014] As a preferred embodiment, the inner surface of the supporting casting is an arc surface that matches the curvature of the outer surface of the arc-shaped welding plate, and the outer surface of the arc-shaped welding plate and the inner arc surface of the arc-shaped welding plate are concentric arc surfaces.

[0015] As a preferred embodiment, the top surface of the support casting is a top slope that gradually slopes outwards radially.

[0016] As a preferred embodiment, the support feet are provided in three sets and are evenly spaced along the outer periphery of the cylindrical body.

[0017] As a preferred embodiment, the height of the arc-shaped welding plate is 0.3 to 0.4 times the height of the outer circumferential side of the cylindrical body.

[0018] As a preferred embodiment, the arc-shaped welding plate has conical solder portions welded to both ends of the arc shape. The conical solder portions are welded to the arc-shaped end faces of the arc-shaped welding plate and the outer peripheral side of the cylindrical body, respectively. The outer side of the conical solder portions extends obliquely from the outer edge of the arc-shaped end faces of the arc-shaped welding plate to the outer peripheral side of the cylindrical body.

[0019] As a preferred embodiment, the conical solder portion extends from the outer edges of the two arc-shaped end faces of the arc-shaped welding plate toward the outer surface of the arc-shaped welding plate to form a covering welding portion;

[0020] And / or:

[0021] The inner edges of the two arc-shaped end faces of the arc-shaped welding plate are formed with oblique cuts facing the inner side of the arc-shaped welding plate. The inner end of the conical solder portion fills the oblique cuts to form an inner extension welding portion.

[0022] As a preferred embodiment, the lower end of the support casting is integrally connected to a mounting base plate, and a locking hole is provided on the mounting base plate.

[0023] Compared with the prior art, this utility model has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly involves setting multiple sets of support feet on the outer periphery of the cylindrical body. Each set of support feet includes a support casting and an arc-shaped welding plate. The inner side of the arc-shaped welding plate is welded to the outer periphery of the cylindrical body, and the inner side of the upper section of the support casting is welded to the outer side of the arc-shaped welding plate. In this way, a lateral welded support is formed, which is easy to install and position. The same support casting and arc-shaped welding plate can be adjusted within a certain range to adjust the required support height for installation, thereby improving the flexibility and versatility of processing and installation. In particular, this support structure effectively improves the ability to resist earthquakes and prevent swaying, and helps to reduce the weld stress between the lower hemispherical head and the lower end of the cylindrical body. Furthermore, the support feet do not occupy the bottom space of the metal tank, and the bottom pipe arrangement is more flexible.

[0024] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a perspective view of the bottom-vented tank installation structure according to Embodiment 1 of this utility model;

[0026] Figure 2 This is a cross-sectional view of the bottom-vented tank installation structure according to Embodiment 1 of this utility model;

[0027] Figure 3 yes Figure 2 A partial view;

[0028] Figure 4 This is a partial view of the bottom-vented tank installation structure of Embodiment 2 of this utility model;

[0029] Figure 5 This is a partial view of the bottom-vented tank installation structure of Embodiment 3 of this utility model;

[0030] Figure 6 It is a representative outrigger-type tank installation structure in the existing technology. Detailed Implementation

[0031] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0032] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] A bottom-sheltered tank installation structure includes a metal tank body, the metal tank body comprising a cylindrical shell 10; a lower hemispherical end cap 11 is integrally connected to the lower end of the cylindrical shell 10, and an upper hemispherical end cap 12 is integrally connected to the upper end of the cylindrical shell 10. The lower hemispherical end cap 11 is welded to the lower end of the cylindrical shell 10, forming an annular weld. Similarly, the upper hemispherical end cap 12 is welded to the upper end of the cylindrical shell 10, forming an annular weld.

[0034] In actual manufacturing, it is preferable to design the metal tank body as cast steel, specifically cast carbon steel (low carbon, medium carbon, and high carbon steel), cast low alloy steel (total alloy element content < 5%), and cast special steel (such as stainless steel and high manganese steel). These materials have advantages such as high strength (tensile strength can reach over 400 MPa), excellent plasticity and toughness, and their performance can be further improved through heat treatment (such as quenching and tempering). They also have strong high-temperature resistance and corrosion resistance (such as stainless steel). Of course, these are mature technologies for tank manufacturing; therefore, the manufacturing technology of this type of metal tank will not be elaborated upon in this article.

[0035] Multiple sets of support feet are provided on the outer periphery of the cylindrical body 10. Preferably, three sets of support feet are provided and are evenly spaced along the outer periphery of the cylindrical body 10.

[0036] Each set of support legs includes a support casting 20 and an arc-shaped welded plate 30; both the support casting 20 and the arc-shaped welded plate 30 are made of metal. The inner side of the arc-shaped welded plate 30 is welded to the outer circumferential side of the cylindrical body 10, and the upper inner side of the support casting 20 is welded to the outer side of the arc-shaped welded plate 30. The lower end of the support casting 20 is integrally connected to a mounting base plate 21, and a locking hole 211 is provided on the mounting base plate 21 for anchor bolts to be used for locking to the ground. The bottom of the lower hemispherical end cap 11 is connected to a pipe to connect to a cover plate, and below the cover plate is another mixing container.

[0037] The inner surface of the arc-shaped welding plate 30 has an inner arc surface, the curvature of which matches the outer peripheral surface of the cylindrical body 10. The peripheral surface of the support casting 20 is composed of an inner surface and two inclined surfaces connecting to both sides of the inner surface. The two inclined surfaces converge at their outward ends to form a V-shaped angle, thus making the cross-section of the support casting 20 triangular. The use of a triangular cross-section (or approximately triangular cross-section) is intended to improve its performance under axial pressure. Generally, under the same cross-sectional area and length, a triangular prism has the greatest longitudinal support force because a triangular cross-section can more evenly distribute the pressure load, reduce local stress concentration, and thus improve overall stability. Simultaneously, the triangular cross-section has a larger moment of inertia (i.e., a stronger ability to resist bending deformation). Under the same cross-sectional area, a triangle is better at resisting lateral bending forces than a rectangle or circle. Furthermore, the support casting 20 is cast, and the use of a triangular cross-section better accommodates any non-uniformity or minor defects that may exist in the material during casting, without affecting the overall function. The inner surface of the supporting casting 20 is an arc surface that matches the curvature of the outer surface of the arc-shaped welding plate 30, and the outer surface and inner arc surface of the arc-shaped welding plate 30 are concentrically arranged arc surfaces. The top surface of the supporting casting 20 is a top slope 22 that gradually decreases radially outward. In actual manufacturing, the dimensions of the arc-shaped welding plate 30 can be selected as needed, such as the arc width, height, and plate thickness. The height of the arc-shaped welding plate 30 is 0.3 to 0.4 times the height of the outer circumferential surface of the cylindrical body 10, and the plate thickness of the arc-shaped welding plate 30 is usually greater than the wall thickness of the cylindrical body 10, preferably 1.2 to 2 times.

[0038] like Figures 1 to 3As shown, the arc-shaped welding plate 30 has conical solder portions 40 welded to its arc-shaped ends. The conical solder portions 40 are welded to the arc-shaped end faces of the arc-shaped welding plate 30 and the outer peripheral side of the cylindrical body 10. The outer side of the conical solder portions 40 extends obliquely from the outer edge of the arc-shaped end faces of the arc-shaped welding plate 30 to the outer peripheral side of the cylindrical body 10. Preferably, the welds around the arc-shaped welding plate 30 are designed to extend obliquely and transition gradually, that is, the upper and lower outer edges of the arc-shaped welding plate 30 also extend obliquely to the outer peripheral side of the cylindrical body 10.

[0039] like Figure 4 As shown, the conical solder portion 40 extends from the outer edge of the arc-shaped two end faces of the arc-shaped welding plate 30 toward the outer side of the arc-shaped welding plate 30 to form a covering welding portion 41. Generally, when manufacturing the arc-shaped welding plate 30, a bevel or rounded chamfer has been designed on the outer edge of the arc-shaped two end faces of the arc-shaped welding plate 30. In this way, the covering welding portion 41 covers the bevel or rounded chamfer, which can improve the welding bond strength.

[0040] like Figure 5 As shown, the inner edges of the two arc-shaped end faces of the arc-shaped welding plate 30 are formed with oblique cuts facing the inner surface of the arc-shaped welding plate 30. The inner end of the conical solder portion 40 fills the oblique cuts to form an extended welding portion 42. The oblique cuts at both ends are generally symmetrically arranged at both ends of the inner arc surface of the arc-shaped welding plate 30. The extended welding structure can improve the weld bonding strength.

[0041] In other embodiments, the aforementioned covering weld portion 41 and inner extension weld portion 42 may be provided simultaneously.

[0042] Because an arc-shaped welding plate is welded to the outer circumference of the cylindrical body, it essentially supports the entire metal tank in the middle section, rather than the bottom as in traditional technology. This allows for more direct load transfer on the outer circumference of the cylindrical body, reducing stress in the end cap welds. Furthermore, welding and installation are easier. Using the mounting base plate as a reference point, the upper position of the support casting 20 can be adjusted relative to the arc-shaped welding plate, allowing for vertical adjustment. Similarly, the vertical position of the arc-shaped welding plate can also be adjusted when welding it to the outer circumference of the cylindrical body. Therefore, the same support casting and arc-shaped welding plate can be adjusted within a certain range to meet the required support height, improving processing and installation flexibility and versatility, and satisfying installation requirements for various support heights. Additionally, this structure uses three-point circumferential support, replacing the traditional four-legged bottom support, saving one leg and reducing costs.

[0043] The key design feature of this invention lies in the provision of multiple sets of support feet on the outer periphery of the cylindrical body. Each set of support feet includes a support casting and an arc-shaped welded plate. The inner side of the arc-shaped welded plate is welded to the outer periphery of the cylindrical body, and the inner side of the upper section of the support casting is welded to the outer side of the arc-shaped welded plate. This forms a lateral welded support, which is easy to install and position. The same support casting and arc-shaped welded plate can be adjusted within a certain range to meet the required support height, improving the flexibility and versatility of processing and installation. In particular, this support structure effectively enhances the resistance to earthquakes and swaying, and helps reduce the weld stress between the lower hemispherical head and the lower end of the cylindrical body. Furthermore, the support feet do not occupy the bottom space of the metal tank, allowing for more flexible bottom pipe arrangement.

[0044] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A bottom-vented tank installation structure, comprising a metal tank body, the metal tank body including a cylindrical shell; a lower hemispherical end cap integrally connected to the lower end of the cylindrical shell, and an upper hemispherical end cap integrally connected to the upper end of the cylindrical shell, characterized in that: The outer periphery of the cylindrical body is provided with multiple sets of support feet, each set of support feet including a support casting and an arc-shaped welding plate; the inner side of the arc-shaped welding plate is welded to the outer periphery of the cylindrical body, and the upper inner side of the support casting is welded to the outer side of the arc-shaped welding plate.

2. The bottom-vented tank installation structure according to claim 1, characterized in that: The inner side of the arc-shaped welding plate has an inner arc surface, and the curvature of the inner arc surface matches that of the outer peripheral side of the cylindrical body.

3. The bottom-vented tank installation structure according to claim 2, characterized in that: The peripheral side of the support casting is composed of an inner side and two inclined surfaces connected to the two sides of the inner side, with the two inclined surfaces converging at the outer end to form a V-shaped angle.

4. The bottom-vented tank installation structure according to claim 3, characterized in that: The inner surface of the supporting casting is an arc surface whose curvature matches that of the outer surface of the arc-shaped welding plate, and the outer surface of the arc-shaped welding plate and the inner arc surface of the arc-shaped welding plate are concentric arc surfaces.

5. The bottom-vented tank installation structure according to claim 3, characterized in that: The top surface of the support casting is a top slope that gradually slopes outwards radially.

6. The bottom-vented tank installation structure according to claim 1, characterized in that: The support feet are provided in three sets and are evenly spaced along the outer periphery of the cylindrical body.

7. The bottom-vented tank installation structure according to claim 1, characterized in that: The height of the arc-shaped welding plate is 0.3 to 0.4 times the height of the outer circumferential side of the cylindrical body.

8. The bottom-vented tank installation structure according to claim 1, characterized in that: The arc-shaped welding plate has conical solder portions welded to both ends of the arc shape. The conical solder portions are welded to the arc-shaped end faces of the arc-shaped welding plate and the outer peripheral side of the cylindrical body. The outer side of the conical solder portions extends obliquely from the outer edge of the arc-shaped end faces of the arc-shaped welding plate to the outer peripheral side of the cylindrical body.

9. The bottom-vented tank installation structure according to claim 8, characterized in that: The conical solder portion extends from the outer edges of the two arc-shaped end faces of the arc-shaped welding plate toward the outer side of the arc-shaped welding plate to form a covering welding portion; And / or: The inner edges of the two arc-shaped end faces of the arc-shaped welding plate are formed with oblique cuts facing the inner side of the arc-shaped welding plate. The inner end of the conical solder portion fills the oblique cuts to form an inner extension welding portion.

10. The bottom-vented tank installation structure according to claim 1, characterized in that: The lower end of the support casting is integrally connected to a mounting base plate, and a locking hole is provided on the mounting base plate.

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