Bearing type circular cold box

Abstract

The utility model provides a bearing type round cold box which comprises a cylinder body, the cylinder body comprises a plurality of cylinder sections, the ends of the cylinder sections are connected in a welded mode, and each cylinder section is formed by rolling and welding a steel plate; the first reinforcing rings are arranged at intervals in the length direction of the cylinder body, and the outer walls of the first reinforcing rings are fixedly connected with the inner wall of the cylinder body; the skirt is fixed at the inner bottom of the cylinder; the supporting beam assembly is fixed on the skirt; and the plurality of supporting seats are fixed on the supporting beam assembly, and the plurality of supporting seats are used for bearing equipment mounted in the cylinder body. The utility model has the advantages of stable structure, material saving and small occupied area, and can effectively support internal equipment.

Description

Technical Field

[0001] This utility model relates to a cold box, specifically a load-bearing circular cold box, belonging to the field of cryogenic equipment technology. Background Technology

[0002] The cold box is the core equipment of a cryogenic air separation unit. It typically integrates key components such as distillation columns, heat exchangers, and piping valves, and is filled with insulating materials like perlite to maintain the ultra-low temperature environment. In current technology, large cold boxes generally adopt a cuboid structure. This type of cold box usually consists of columns, beams, and diagonal braces forming an independent three-dimensional support frame to bear the weight of the internal equipment and itself. Its external wall panels (sealing panels) primarily serve a sealing and insulation function and are not the main load-bearing structure. While this structure is mature, the steel frame is complex, consumes a large amount of steel, has high manufacturing costs, and occupies a large area. It is poorly adaptable to projects with limited space. Furthermore, the numerous right angles and sharp corners not only increase the difficulty of sealing but also easily create airflow dead zones at the corners, affecting the uniformity of internal heat exchange and potentially causing cold leakage risks.

[0003] As project demands continue to evolve, the industry has begun exploring the application of circular cold boxes. However, scaling up circular cold boxes presents significant technical challenges. Unlike cuboid cold boxes, circular cold boxes lack an internal main frame and must rely on the cylinder itself to bear the entire load. If the cylinder is designed simply according to conventional methods, with its enormous diameter and length, it is prone to crushing or instability due to its own weight, the weight of the internal equipment, and wind loads. Excessively thickening the cylinder wall to ensure strength would result in overweight equipment, making transportation and hoisting extremely difficult and completely negating its economic value. Furthermore, how to safely and reliably install and secure core equipment such as distillation columns weighing tens of tons inside a frameless cylinder, while avoiding direct contact between the equipment and the cylinder wall to prevent cold bridging, is also a pressing technical problem that needs to be solved. Utility Model Content

[0004] Based on the above background, the purpose of this utility model is to provide a load-bearing circular cold box that is structurally stable, saves materials, occupies a small area, and can effectively support internal equipment.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] A load-bearing circular cold box, comprising:

[0007] A cylindrical body comprising multiple cylindrical sections welded together at both ends, each cylindrical section being formed by rolling and welding steel plates;

[0008] Multiple first reinforcing rings are provided, which are spaced apart along the length of the cylindrical body, and the outer wall of the first reinforcing ring is fixedly connected to the inner wall of the cylindrical body.

[0009] The skirt base is fixed to the inner bottom of the cylindrical body;

[0010] The support beam assembly is fixed to the skirt base;

[0011] Multiple supports are fixed to the support beam assembly and are used to support the equipment installed inside the cylindrical body.

[0012] Preferably, the load-bearing circular cold box further includes a plurality of second reinforcing rings, which are spaced apart along the length of the cylindrical body, and one second reinforcing ring is disposed between two adjacent first reinforcing rings. The outer wall of the second reinforcing ring is fixedly connected to the inner wall of the cylindrical body.

[0013] Preferably, the cross-sectional dimension of the second reinforcing ring is smaller than that of the first reinforcing ring.

[0014] Preferably, the support beam assembly includes multiple beams that are interconnected to form a grid-like frame.

[0015] Preferably, the top of the cylindrical body is provided with a top plate for sealing, and the top plate is inclined.

[0016] Preferably, the top of the skirt seat is provided with a skirt seat cover plate, and the support beam assembly is fixed to the skirt seat cover plate.

[0017] Preferably, a portion of the cylindrical sections has a thickened wall section.

[0018] Preferably, the outer wall of the cylindrical body is provided with a manhole.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] This utility model discloses a load-bearing circular cold box that abandons the traditional frame structure and uses the cylinder itself as the main load-bearing structure. By setting reinforcing rings on the inner wall of the cylinder and locally thickening the wall sections, the overall rigidity and deformation resistance of the cylinder are greatly enhanced. This utility model uses an internal support system formed by a skirt, support beam assembly and supports at the bottom of the cold box to transfer the load of the heavy equipment inside to the foundation of the cold box, avoiding the direct force of the equipment on the bottom plate of the cylinder and effectively separating the equipment from the bottom plate of the cylinder to avoid cold loss caused by cold bridge due to direct contact. Compared with the traditional rectangular cold box, this utility model eliminates the independent heavy steel main frame, significantly reducing the amount of steel structure used by about 20%, effectively reducing material and manufacturing costs. In addition, the circular structure itself has better airtightness, which can save about 50% of the use of dry nitrogen. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a load-bearing circular cold box according to this utility model;

[0023] Figure 2 This is a schematic diagram of the bottom structure of a load-bearing circular cold box according to the present invention;

[0024] Figure 3 This is a top view of the support beam assembly in this utility model;

[0025] Figure 4 This is a schematic diagram of the top structure of a load-bearing circular cold box according to the present invention;

[0026] In the figure: 1. Cylindrical body; 101. Cylindrical section; 102. Top plate; 103. Manhole; 2. First reinforcing ring; 3. Second reinforcing ring; 4. Skirt seat; 5. Skirt seat cover plate; 6. Support beam assembly; 601. Beam body; 7. Support; 8. Internal equipment. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0028] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0030] like Figure 1-4 As shown, an embodiment of this utility model discloses a load-bearing circular cold box, including a cylindrical body 1, multiple first reinforcing rings 2, a skirt 4, a support beam assembly 6, and multiple supports 7.

[0031] The cylindrical body 1 is the main load-bearing structure of the entire cold box, comprising multiple cylindrical sections 101 welded together at both ends. Specifically, multiple cylindrical sections 101 are assembled into the cylindrical body 1 by butt welding at their ends along their length. Each cylindrical section 101 is made of rolled and welded steel plate. To optimize structural strength and economy, some cylindrical sections 101 that need to withstand greater stress are designed with thickened walls. The top of the cylindrical body 1 is provided with a top plate 102 for sealing. The top plate 102 is inclined to prevent water accumulation and facilitate the exhaust of internal gases. For ease of installation and maintenance, a manhole 103 is provided on the outer wall of the cylindrical body 1.

[0032] To ensure the structural stability of the massive cylindrical body 1 under complex loads such as its own weight, the weight of the internal equipment 8, the pressure of the insulation material, and wind loads, and to prevent instability and deformation, multiple first reinforcing rings 2 are spaced along the length of the inner wall of the cylindrical body 1. The outer walls of the first reinforcing rings 2 are firmly connected to the inner wall of the cylindrical body 1 by welding or other methods, thereby improving the circumferential stiffness of the cylindrical body 1. Furthermore, to further improve local stability, second reinforcing rings 3 with smaller cross-sectional dimensions are added between two adjacent first reinforcing rings 2.

[0033] The skirt support 4 is fixed to the inner bottom of the cylindrical body 1. A skirt support plate 5 is fixedly welded to the top of the skirt support 4. A support beam assembly 6 is installed on the skirt support plate 5. This support beam assembly 6 is formed by intersecting and welding multiple steel beams 601 to form a high-strength grid-like frame structure. Multiple supports 7 are fixed at predetermined positions on the support beam assembly 6 to support the equipment installed inside the cylindrical body 1.

[0034] The installation adopts a horizontal installation method, and transportation is carried out in sections. The equipment is then vertically installed on the foundation at the project site. Heavy internal equipment, such as the distillation column, is fixedly connected to the support 7 via its own support legs. The entire weight load of the internal equipment 8 is transferred through the support 7 to the support beam assembly 6, then through the skirt sealing plate 5 to the skirt 4, and finally to the external foundation of the cold box. This design ensures that the heavy equipment is completely suspended and does not come into contact with the bottom plate of the cylindrical body 1, fundamentally eliminating the possibility of cold bridging.

[0035] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A load-bearing circular cold box, characterized in that: This load-bearing circular cold box includes: The cylindrical body (1) includes multiple cylindrical sections (101) welded together at both ends, and each cylindrical section (101) is formed by rolling and welding steel plates; Multiple first reinforcing rings (2) are provided at intervals along the length direction of the cylindrical body (1), and the outer wall of the first reinforcing ring (2) is fixedly connected to the inner wall of the cylindrical body (1). Skirt base (4) is fixed to the inner bottom of the cylindrical body (1); The support beam assembly (6) is fixed to the skirt base (4); Multiple supports (7) are fixed to the support beam assembly (6) and are used to support the equipment installed inside the cylindrical body (1).

2. The load-bearing circular cold box according to claim 1, characterized in that: The load-bearing circular cold box also includes multiple second reinforcing rings (3), which are spaced apart along the length of the cylindrical body (1), and one second reinforcing ring (3) is located between two adjacent first reinforcing rings (2). The outer wall of the second reinforcing ring (3) is fixedly connected to the inner wall of the cylindrical body (1).

3. A load-bearing circular cold box according to claim 2, characterized in that: The cross-sectional dimensions of the second reinforcing ring (3) are smaller than those of the first reinforcing ring (2).

4. A load-bearing circular cold box according to claim 1, characterized in that: The support beam assembly (6) includes multiple beams (601), which are interconnected to form a grid frame.

5. A load-bearing circular cold box according to claim 1, characterized in that: The top of the cylindrical body (1) is provided with a top plate (102) for sealing, and the top plate (102) is inclined.

6. A load-bearing circular cold box according to claim 1, characterized in that: The skirt seat (4) is provided with a skirt seat cover plate (5) at the top, and the support beam assembly (6) is fixed on the skirt seat cover plate (5).

7. A load-bearing circular cold box according to claim 1, characterized in that: In the cylindrical body (1), a portion of the cylindrical section (101) has a thickened wall section.

8. A load-bearing circular cold box according to claim 1, characterized in that: The outer wall of the cylindrical body (1) is provided with a manhole (103).

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