Anchor bolt reinforcing structure of large low-temperature ethylene storage tank

Abstract

The utility model discloses an anchor bolt reinforcing structure of large low temperature ethylene storage tank, including tank and anchor bolt reinforcing structure, the anchor bolt reinforcing structure is composed of anchor bolt, anchoring belt, backing plate, cover plate and locating plate, the anchor bolt is pre-buried in the equipment foundation below tank and is welded and fixed with the anchoring belt, the backing plate is welded at the left end and the right end of the cover plate, and the locating plate is welded with the backing plate. The positioning plate is welded to the upper portion of the anchoring belt, and the anchoring belt is fixed to the upper portion of the cover plate in a limited mode through the positioning plate. Compared with the prior art, the anchoring belt anchor bolt seat is adopted, the anchor bolt seat is pre-embedded during foundation construction, and the positioning plate is welded above the anchoring belt, so that the anchoring belt and the positioning plate are integrated, and the anchoring belt can freely move in the axial direction when the tank body settles again or thermal expansion is caused by temperature difference; axial and radial displacement can be effectively absorbed, and the anchoring belt has certain bending and flexibility and can well cope with thermal expansion of the tank body.

Description

Technical Field

[0001] The utility model relates to the field of petrochemical engineering, in particular to an anchor bolt reinforcement structure for a large-scale low-temperature ethylene storage tank. Background Technique

[0002] At present in the petrochemical field, the common ethylene storage tanks have relatively small diameters and heights, and their volumes are not large. Conventional designs can meet the design requirements. However, for some large-scale ethylene storage tanks, the inner tank size is φ42X35.8m, the outer tank size is φ44X39m, and the capacity is 46000m 3 , and the working temperature reaches -104°. Due to the large size and total weight of the storage tank, optimal design must be carried out during the structural design to ensure the absolute safe and reliable operation of the equipment.

[0003] Conventional storage tank designs generally adopt the form of circular bolt hole anchor bolt seats, or anchor bolt seats with oblong bolt holes opened along the radial direction to fix the storage tank and eliminate the thermal expansion caused by temperature differences. For large-scale ethylene storage tanks, due to their large size and heavy weight, their thermal expansion is also large. The length of the oblong bolt hole is limited and cannot meet the thermal expansion requirements of large-scale ethylene storage tanks. Therefore, a new structure needs to be designed for large-scale ethylene storage tanks to effectively absorb the axial and radial displacements when the tank body undergoes secondary settlement or thermal expansion caused by temperature differences. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anchor bolt reinforcement structure for a large-scale low-temperature ethylene storage tank that solves the above problems.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an anchor bolt reinforcement structure for a large-scale low-temperature ethylene storage tank, including a tank body and an anchor bolt reinforcement structure. The anchor bolt reinforcement structure is composed of anchor bolts, an anchoring belt, a backing plate, a cover plate, and a positioning plate. The anchor bolts are embedded in the equipment foundation below the tank body and are welded and fixed to the anchoring belt. The left and right ends of the cover plate are welded with backing plates, and the backing plates are welded to the outer side wall of the tank body. A gap is left between the cover plate and the outer side wall of the tank body for the anchoring belt to pass through. The positioning plate is welded to the upper part of the anchoring belt, and the anchoring belt is limited and fixed above the cover plate through the positioning plate.

[0006] Preferably, the anchor bolt is composed of an anchor bolt seat and a connecting plate. The lower end of the connecting plate is embedded in the equipment foundation, and the upper end is welded and fixed to the anchoring belt. A triangular reinforcing rib is welded between the anchor bolt seat and the connecting plate.

[0007] Preferably, the upper half of the anchoring belt is a vertical section, and the lower half is an inclined connecting section. The vertical section of the lower half is arranged closely against the outer side wall of the tank body, and the lower half is an inclined connecting section that is butt-welded and fixed to the upper end of the connecting plate of the anchor bolt.

[0008] Preferably, a weld backing plate is welded at the weld joint of the anchoring belt and the connecting plate, and the weld backing plate is fixedly welded to the anchoring belt and the connecting plate respectively.

[0009] Preferably, there are multiple anchor bolt reinforcement structures, and the multiple anchor bolt reinforcement structures are arranged at intervals in sequence along the circumferential direction of the tank body.

[0010] Compared with the prior art, the advantages of the present utility model are as follows: The present utility model adopts the form of an anchoring belt and an anchor bolt seat. The anchor bolt seat is pre-embedded during the foundation construction, and a backing plate is welded on the outer side wall of the tank equipment. During the equipment installation, the anchoring belt is placed between the backing plates, and then the cover plate is welded. After the hydrostatic test is completed and the settlement lasts for a period of time, a positioning plate is welded above the anchoring belt, so that the anchoring belt and the positioning plate become an integral body. Since the anchoring belt and the positioning plate are limited between the backing plates as an integral body, when the tank body undergoes secondary settlement or thermal expansion caused by temperature difference, it can move freely along the axial direction, and can effectively absorb the axial and radial displacements. Moreover, there is a certain degree of bending and flexibility during the connection process of the anchoring belt, which can well cope with the thermal expansion of the tank body, thereby solving the problem of thermal expansion of large-scale tank bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic assembly structure diagram of the anchor bolt reinforcement structure of the present utility model on the tank body;

[0012] Figure 2 is a schematic structure diagram of the anchor bolt reinforcement structure of the present utility model.

[0013] In the figure, 1. Tank body; 2. Equipment foundation; 3. Anchoring belt; 4. Anchor bolt; 41. Anchor bolt seat; 42. Connecting plate; 43. Triangular stiffener; 5. Backing plate; 6. Cover plate; 7. Positioning plate; 8. Weld backing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present utility model will be further described below.

[0015] An anchor bolt reinforcement structure for a large-scale low-temperature ethylene storage tank, refer to Figure 1 and Figure 2, including a tank body 1 and an anchor bolt 4 reinforcement structure. The anchor bolt 4 reinforcement structure is composed of an anchor bolt 4, an anchoring belt 3, a backing plate 5, a cover plate 6 and a positioning plate 7. The anchor bolt 4 is pre-embedded in the equipment foundation 2 below the tank body 1 and is welded and fixed to the anchoring belt 3. The left and right ends of the cover plate 6 are welded with backing plates 5, and the backing plates 5 are welded to the outer side wall of the tank body 1. A gap is left between the cover plate 6 and the outer side wall of the tank body 1 for the anchoring belt 3 to pass through. The positioning plate 7 is welded to the upper part of the anchoring belt 3, and the anchoring belt 3 is limited and fixed above the cover plate 6 through the positioning plate 7. The utility model adopts the form of an anchoring belt 3 and an anchor bolt seat 41. The anchor bolt seat 41 is pre-embedded during the foundation construction, and the backing plate 5 is welded to the outer side wall of the equipment of the tank body 1. During the equipment installation, the anchoring belt 3 is placed between the backing plates 5, and then the cover plate 6 is welded. After the hydrostatic test is completed and the settlement lasts for a period of time, the positioning plate 7 is welded above the anchoring belt 3, so that the anchoring belt 3 and the positioning plate 7 become an integral body. Since the anchoring belt 3 and the positioning plate 7 are limited as an integral body between the backing plates 5, when the tank body 1 undergoes secondary settlement or thermal expansion caused by temperature difference, it can move freely along the axial direction and can effectively absorb the axial and radial displacements.

[0016] The anchor bolt 4 is composed of an anchor bolt seat 41 and a connecting plate 42. The lower end of the connecting plate 42 is pre-embedded in the equipment foundation 2, and the upper end is welded and fixed to the anchoring belt 3. The connecting plate 42 is used for welding and fixing to the anchoring belt 3. A triangular reinforcing rib 43 is welded between the anchor bolt seat 41 and the connecting plate 42, and the triangular reinforcing rib 43 can enhance the structural strength between the anchor bolt seat 41 and the connecting plate 42.

[0017] The upper half of the anchoring belt 3 is a vertical section, and the lower half is an inclined connecting section. The vertical section of the lower half is arranged closely against the outer side wall of the tank body 1, and the lower half is an inclined connecting section that is butt-welded and fixed to the upper end of the connecting plate 42 of the anchor bolt 4. Since the lower part of the anchoring belt 3 is an inclined connecting section, there is a certain degree of bending and flexibility during the connection process, and it can well cope with the thermal expansion of the tank body 1.

[0018] A weld backing plate 8 is welded at the weld joint between the anchoring belt 3 and the connecting plate 42. The weld backing plate 8 is welded and fixed to the anchoring belt 3 and the connecting plate 42 respectively. The weld joint is strengthened through the weld backing plate 8 to improve the structural connection strength between the anchoring belt 3 and the connecting plate 42 and avoid weld cracking.

[0019] There are multiple anchor bolt 4 reinforcement structures, and the multiple anchor bolt reinforcement structures are arranged at intervals in sequence along the circumferential direction of the tank body 1. Through the arrangement of the multiple anchor bolt 4 reinforcement structures, the overall structural strength of the equipment of the tank body 1 is realized, so as to solve the problem of thermal expansion of the large tank body 1.

[0020] The above has introduced in detail an anchor bolt reinforcement structure and process for a large-scale low-temperature ethylene storage tank provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. It is possible to make changes and improvements to the present utility model without exceeding the concept and scope defined by the appended claims. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An anchor reinforcement structure for a large cryogenic ethylene storage tank, characterized in that: It includes a tank body and an anchor reinforcement structure, which consists of an anchor, an anchor belt, a pad, a cover plate and a positioning plate. The anchor is pre-buried in the equipment foundation below the tank body and is welded to the anchor belt. Pads are welded to the left and right ends of the cover plate, which is welded to the outer wall of the tank body. A gap is left between the cover plate and the outer wall of the tank body to facilitate the passage of the anchor belt. The positioning plate is welded to the upper part of the anchor belt, and the anchor belt is fixed above the cover plate by the positioning plate.

2. The anchor bolt reinforcement structure of a large cryogenic ethylene storage tank according to claim 1 is characterized in that: The anchor bolt is composed of an anchor bolt seat and a connecting plate. The lower end of the connecting plate is pre-buried in the equipment foundation, and the upper end is welded and fixed to the anchor belt. A triangular reinforcing rib is welded between the anchor bolt seat and the connecting plate.

3. The anchor bolt reinforcement structure of a large cryogenic ethylene storage tank according to claim 2 is characterized in that: The upper part of the anchor belt is a vertical section, and the lower part is an inclined connecting section. The vertical section of the lower part is arranged close to the outer wall of the tank body, and the lower part is the inclined connecting section and is fixed to the upper end of the connecting plate of the anchor bolt by butt welding.

4. The anchor bolt reinforcement structure for a large cryogenic ethylene storage tank according to claim 3 is characterized in that: A weld pad is welded at the weld connection between the anchoring belt and the connecting plate, and the weld pad is respectively welded and fixed to the anchoring belt and the connecting plate.

5. The anchor bolt reinforcement structure of a large cryogenic ethylene storage tank according to claim 1, characterized in that: There are multiple anchor bolt reinforcement structures, and the multiple anchor bolt reinforcement structures are arranged in sequence and at intervals along the circumference of the tank body.

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