Tank top supporting and strengthening structure of large low-temperature ethylene storage tank
By designing radial and annular reinforcement ribs on the top cover of a large low-temperature ethylene storage tank and adopting a circumferential rotating connection structure, the thermal expansion and local stress problems caused by temperature difference are solved, and the weld cracking is prevented, which improves the safety and reliability of the storage tank structure.
Patent Information
- Application Number
- CN202421741977.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-22
AI Technical Summary
Due to the large diameter and large temperature difference, large temperature ethylene storage tanks lead to thermal expansion and local stress caused by the temperature difference of the top cover, which can easily cause weld cracking.
The reinforcement ribs using the top cover are composed of radial reinforcement ribs and annular reinforcement ribs. The radial reinforcement ribs are welded in a scattered manner with the apex of the top cover as the center. The annular reinforcement ribs are arranged at intervals in sequence with the apex of the top cover as the center, and the connecting structure is rotated in the circumferentially to increase the expansion margin and reduce local stress.
It effectively reduces the local stress caused by the top cover due to temperature difference, prevents weld cracks, and ensures the safety and reliability of the storage tank structure.
Smart Images
Figure CN222880868U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of petrochemical industry, and in particular to a tank top support reinforcement structure of a large-scale low-temperature ethylene storage tank. Background Art
[0002] At present, in the petrochemical field, the common ethylene storage tanks are small in diameter and height, and the volume is not large. Conventional design can meet the design requirements. However, some large ethylene storage tanks have inner tank dimensions of φ42X35.8m and outer tank dimensions of φ44X39m, with a capacity of 46000m 3 The operating temperature reaches -104°. Due to the large size of the storage tank and the large total weight, the structural design must be optimized to ensure the absolute safety and reliability of the equipment operation.
[0003] Conventional tanks have small top diameters, and both radial and circumferential reinforcements can be made of traditional welded structures. However, large ethylene tanks have large diameters and large temperature differences between the inside and outside of the tank. Excessive temperature differences can easily cause thermal expansion, and the top cover will crack due to local stress caused by the temperature difference. Therefore, it is urgent to design a new reinforcement structure. Utility Model Content
[0004] The purpose of the utility model is to provide a tank top support reinforcement structure for a large low-temperature ethylene storage tank which solves the above-mentioned problem.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a tank top support reinforcement structure of a large-scale low-temperature ethylene storage tank, including a top cover, wherein the top cover is provided with a reinforcing rib, wherein the reinforcing rib is composed of radial reinforcing ribs and annular reinforcing ribs, wherein there are multiple radial reinforcing ribs, and the multiple radial reinforcing ribs are scatteredly distributed with the top cover as the center, and are welded to the top cover, wherein the annular reinforcing ribs have multiple circles, and the multiple circles of annular reinforcing ribs are arranged in sequence with the top cover as the center, and each circle of annular reinforcing ribs is composed of multiple circumferential reinforcing ribs, wherein the circumferential reinforcing ribs are located between two adjacent radial reinforcing ribs, and the two ends are respectively rotatably connected to the radial reinforcing ribs.
[0006] Preferably, the radial reinforcing rib is an I-beam, and wing plates are vertically welded in the left and right grooves of the radial reinforcing rib, and bolt holes are opened on the wing plates.
[0007] Preferably, the circumferential reinforcement rib is a channel steel, which consists of a top plate and left and right side plates. The left and right side plates are clamped on the bolt holes of the wing plate and are rotatably connected to the wing plate through rotating pins matching the bolt holes.
[0008] Preferably, the bolt hole is an oblong bolt hole.
[0009] Preferably, an expansion gap is left between the top plate of the circumferential reinforcement rib and the radial reinforcement rib.
[0010] Compared with the prior art, the utility model has the following advantages: the utility model changes the reinforcing ribs of the top cover from the traditional welding structure to a radially welded and circumferentially rotating connection structure, so that the reinforcing ribs can have sufficient expansion margin during the thermal expansion process caused by excessive temperature difference, thereby reducing the local stress of the top cover caused by the temperature difference and preventing weld cracking. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the assembly structure of the radial reinforcing ribs and the circumferential reinforcing ribs of the utility model;
[0012] Figure 2 It is a schematic diagram of the overall arrangement of the reinforcing ribs of the utility model on the top cover.
[0013] In the figure, 1. top cover; 2. radial reinforcement ribs; 3. annular reinforcement ribs; 31. circumferential reinforcement ribs; 4. wing plate; 5. oblong bolt hole; 6. expansion gap. DETAILED DESCRIPTION
[0014] The utility model will be further described below.
[0015] A tank top support reinforcement structure for a large low-temperature ethylene storage tank, comprising a top cover 1, see Figure 1 and Figure 2 The top cover 1 is provided with a reinforcing rib, which is composed of radial reinforcing ribs 2 and annular reinforcing ribs 3. There are multiple radial reinforcing ribs 2, which are scattered around the top cover 1 and welded to the top cover 1. There are multiple circles of annular reinforcing ribs 3, which are arranged in sequence with the top cover 1 as the center. Each circle of annular reinforcing ribs 3 is composed of multiple circumferential reinforcing ribs 31, which are located between two adjacent radial reinforcing ribs 2, and the two ends are respectively connected to the radial reinforcing ribs 2 in rotation. The utility model changes the reinforcing ribs of the top cover 1 from a traditional welding structure to a radially welded, circumferentially rotatably connected structure, so that the reinforcing ribs can have sufficient expansion margins during the thermal expansion caused by excessive temperature difference, reduce the local stress of the top cover 1 caused by temperature difference, and prevent weld cracking.
[0016] The radial reinforcement rib 2 is an I-beam, which has good structural stability and can increase the overall strength of the top cover 1. Wing plates 4 are vertically welded in the left and right grooves of the radial reinforcement rib 2. Bolt holes are opened on the wing plates 4. The designed wing plates 4 are used as the connecting parts of the circumferential reinforcement ribs 31 to achieve rotational connection with the circumferential reinforcement ribs 31.
[0017] The circumferential reinforcing rib 31 is a channel steel, which has good structural stability and is easy to clamp on both sides of the wing plate 4 for rotational connection. The circumferential reinforcing rib 31 is composed of a top plate and left and right side plates, which are clamped on the bolt holes of the wing plate 4 and are rotationally connected to the wing plate 4 through rotating pins matching the bolt holes.
[0018] The bolt hole is an oblong bolt hole 5, which can effectively absorb the thermal expansion caused by excessive temperature difference. An expansion gap 6 is left between the top plate of the circumferential reinforcing rib 31 and the radial reinforcing rib 2, which is used for the expansion gap 6 of the circumferential reinforcing rib 31 due to thermal expansion.
[0019] The above is a detailed introduction to the tank top support reinforcement structure and process of a large-scale low-temperature ethylene storage tank provided by the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of the utility model; at the same time, for general technical personnel in this field, according to the idea of the utility model, there will be changes in the specific implementation method and application scope, and changes and improvements to the utility model will be possible without exceeding the concept and scope specified in the attached claims. In summary, the content of this specification should not be understood as a limitation on the utility model.
Claims
1. A tank top support reinforcement structure for a large low-temperature ethylene storage tank, including a top cover, characterized in that: The top cover is provided with reinforcing ribs, which are composed of radial reinforcing ribs and annular reinforcing ribs. There are multiple radial reinforcing ribs, which are scatteredly distributed with the top cover as the center and welded to the top cover. There are multiple circles of annular reinforcing ribs, which are arranged in sequence with the top cover as the center. Each circle of annular reinforcing ribs is composed of multiple circumferential reinforcing ribs. The circumferential reinforcing ribs are located between two adjacent radial reinforcing ribs, and the two ends are rotatably connected to the radial reinforcing ribs respectively.
2. The tank top support reinforcement structure of a large low-temperature ethylene storage tank according to claim 1 is characterized in that: The radial reinforcing ribs are I-beams, and wing plates are vertically welded in the left and right grooves of the radial reinforcing ribs, and bolt holes are opened on the wing plates.
3. The tank top support reinforcement structure of a large low-temperature ethylene storage tank according to claim 2 is characterized in that: The circumferential reinforcing rib is a channel steel, which is composed of a top plate and left and right side plates. The left and right side plates are clamped on the bolt holes of the wing plate and are rotatably connected to the wing plate through rotating pins matching the bolt holes.
4. The tank top support reinforcement structure of a large low-temperature ethylene storage tank according to claim 3 is characterized in that: The bolt hole is an oblong bolt hole.
5. The tank top support reinforcement structure of a large low-temperature ethylene storage tank according to claim 1 is characterized in that: An expansion gap is left between the top plate of the circumferential reinforcing rib and the radial reinforcing rib.