Temporary fixing and correcting device for pneumatic jacking of steel dome of storage tank
By using a combination of steel supports, pressure rings, and anchors during the gas lifting process of the LNG storage tank steel dome, the problems of steel dome deflection and overturning were solved, achieving stable fixation and structural reinforcement of the dome, and improving safety and reliability.
Patent Information
- Application Number
- CN202520276265.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-20
AI Technical Summary
In existing technologies, the steel dome of LNG storage tanks is prone to deflection, tilting or even overturning during the gas lifting process due to uneven friction. There is a lack of effective auxiliary fixing devices, which poses a safety hazard.
Design a temporary fixing and correction device for air-lifting of steel dome of storage tank, including steel brackets, pressure rings and anchors fixed in concrete wall. By welding support steel plates and pressure ring plates, the long and short steel plate structure of the anchors is used to fix it in the reinforced concrete wall to prevent circumferential rotation, improve rigidity and load-bearing performance, and correct the deformation of steel dome in combination with correction components.
This effectively prevents the steel dome from deflecting and rotating during the air-jacking process, improving the reliability and safety of the structure, ensuring the stability of the dome in the predetermined position, and further reinforcing the dome structure after pouring.
Smart Images
Figure CN223647216U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fixing steel domes of storage tanks, and in particular to a temporary fixing and correction device for air jacking of steel domes of storage tanks. Background Technology
[0002] Safe storage is a critical link in the liquefied natural gas (LNG) industry chain. LNG storage tanks are the core storage facilities of LNG receiving systems, involving large investments, intensive technology, and high safety requirements.
[0003] Currently, the common method for installing the dome of above-ground LNG storage tanks is to modularly assemble the tank at the bottom and then inject air into the tank through a construction opening at the bottom of the tank wall. The pressure difference between the inside and outside of the tank is used to lift the entire tank dome to the top. The shortcomings of this method are: friction is generated when the edge of the dome contacts the tank wall during lifting, and the friction is uneven in all directions. Moreover, after the air-supported dome is raised to the predetermined position but before the concrete is poured, the lack of auxiliary fixing devices can cause the dome to deflect or tilt, and in extreme cases, it may even lead to accidents such as overturning. Utility Model Content
[0004] This utility model provides a temporary fixing and correction device for air jacking of steel dome of storage tank, which aims to solve the above-mentioned technical problems.
[0005] The specific technical solution provided by this utility model is as follows:
[0006] This utility model provides a temporary fixing and correction device for air-lifting a steel dome of a storage tank, used for auxiliary fixing after the steel dome of the storage tank has been air-lifted to a predetermined position. The temporary fixing and correction device for air-lifting a steel dome of a storage tank includes a steel bracket fixed inside a concrete wall, a pressure-bearing ring fixed on the steel bracket, and anchors fixed to the pressure-bearing ring. The pressure-bearing ring includes a support steel plate and a pressure-bearing ring plate that are welded to each other, and the anchors include a long steel plate and a short steel plate that are perpendicular to each other.
[0007] Optionally, the included angle between the supporting steel plate and the pressure ring plate is 120°~135°.
[0008] Optionally, the steel bracket includes a support column fixed inside the concrete wall, a support plate welded to the support column, and a reinforcing plate bolted to the upper end of the support column. The bottom of the support steel plate is welded to the support plate, and the sides of the support steel plate are welded to the reinforcing plate.
[0009] Optionally, the thickness of the long steel plate is greater than the thickness of the short steel plate, and the thickness of the long steel plate is greater than the thickness of the pressure ring plate.
[0010] Optionally, the end of the pressure-bearing ring plate has a triangular wedge-shaped structure.
[0011] Optionally, the pressure-bearing ring plate is welded to the steel dome of the storage tank to achieve auxiliary fixation after the steel dome of the storage tank is air-lifted to a predetermined position.
[0012] This utility model has the following beneficial technical effects:
[0013] This utility model provides a temporary fixing and correction device for the air-lifting of a steel dome in a storage tank. This device is used for auxiliary fixing after the steel dome of the storage tank has been air-lifted to a predetermined position. The temporary fixing and correction device includes a steel bracket fixed inside a concrete wall, a pressure-bearing ring fixed to the steel bracket, and anchors fixed to the pressure-bearing ring. The pressure-bearing ring includes a supporting steel plate and a pressure-bearing ring plate welded together. The anchors include a long steel plate and a short steel plate arranged perpendicularly to each other. The short steel plate of the pressure-bearing ring is cast into the reinforced concrete wall of the outer tank to prevent circumferential rotation and improve the rigidity and load-bearing capacity of the pressure-bearing ring. After the steel dome is air-lifted to the predetermined position, the pressure-bearing ring plate supports the steel dome, providing temporary fixing. Simultaneously, after the overall casting is completed following the air-lifting, it reinforces the steel dome, improving the structural reliability of the storage tank's steel dome. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of a temporary fixing and correction device for air jacking of a steel dome of a storage tank according to an embodiment of the present invention;
[0016] Figure 2 This is a schematic diagram illustrating the use of a temporary fixing and correction device for air jacking of a steel dome of a storage tank, according to an embodiment of this utility model. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] The following will combine Figures 1-2A temporary fixing and correction device for air jacking of a steel dome of a storage tank, according to an embodiment of this utility model, is described in detail.
[0019] refer to Figure 1 , Figure 2 As shown in the illustration, this utility model provides a temporary fixing and correction device for air-lifting a steel dome of a storage tank. This device is used for auxiliary fixing after the steel dome of the storage tank has been air-lifted to a predetermined position. The device includes a steel support 1 fixed inside a concrete wall 4, a pressure-bearing ring 2 fixed to the steel support 1, and anchors 3 fixed to the pressure-bearing ring 2. The pressure-bearing ring 2 includes a supporting steel plate 21 and a pressure-bearing ring plate 22 welded together. The anchors 3 include a long steel plate 31 and a short steel plate 32 arranged perpendicularly to each other. The included angle between the supporting steel plate 21 and the pressure-bearing ring plate 22 is 120°~135°, which provides better support for the steel dome.
[0020] refer to Figure 1 , Figure 2 As shown, the construction steel support 1 at the lower part of the pressure ring 2 is cast into the reinforced concrete wall of the outer tank before air jacking, requiring the concrete strength of the wall to reach 100%. The steel support 1 is a force-transfer component. The construction anchor plate 3 on the upper part of the pressure ring 2 is partially cast into the reinforced concrete wall of the outer tank before air jacking to prevent circumferential rotation and improve the rigidity and load-bearing capacity of the pressure ring. After air jacking, it is cast into the concrete at the top of the tank as a whole, which can further support and fix the steel dome 5.
[0021] Deformation is inevitable during the fabrication and lifting of the steel dome of the storage tank. The temporary fixing and correction device for air lifting of the steel dome of the storage tank provided in this embodiment of the utility model also includes a correction component 6. The overall structure of the correction component 6 is similar to a kitchen knife. Its blade 62 is welded and fixed to the steel dome of the storage tank, and the handle 61 is located above the pressure ring 2. When the steel dome of the storage tank deforms during the fabrication and lifting process, the handle 61 overlaps the pressure ring 2. At this time, a triangular wedge made of thick steel plate can be inserted into the gap between the handle 61 and the pressure ring, depending on the deformation of the steel dome, to correct the deformation of the steel dome of the storage tank and fix it.
[0022] refer to Figure 1 and Figure 2 As shown, the steel support 1 includes a support column 11 fixed inside the concrete wall 4, a support plate 12 welded and fixed to the support column 11, and a reinforcing plate 13 bolted to the upper end of the support column 11. The bottom of the support steel plate 21 is welded and fixed to the support plate 12, and the sides of the support steel plate 21 are welded and fixed to the reinforcing plate 13. The thickness of the long steel plate 31 is greater than the thickness of the short steel plate 32, and the thickness of the long steel plate 31 is greater than the thickness of the bearing ring plate 22. This arrangement reduces costs while still providing support.
[0023] The end of the pressure-bearing ring plate 22 is a triangular wedge structure. The pressure-bearing ring plate 22 is welded to the steel dome of the storage tank to achieve auxiliary fixation after the steel dome of the storage tank is air-lifted to the predetermined position.
[0024] This utility model provides a temporary fixing and correction device for the air-lifting of a steel dome in a storage tank. This device is used for auxiliary fixing after the steel dome of the storage tank has been air-lifted to a predetermined position. The temporary fixing and correction device includes a steel bracket fixed inside a concrete wall, a pressure-bearing ring fixed to the steel bracket, and anchors fixed to the pressure-bearing ring. The pressure-bearing ring includes a supporting steel plate and a pressure-bearing ring plate welded together. The anchors include a long steel plate and a short steel plate arranged perpendicularly to each other. The short steel plate of the pressure-bearing ring is cast into the reinforced concrete wall of the outer tank to prevent circumferential rotation and improve the rigidity and load-bearing capacity of the pressure-bearing ring. After the steel dome is air-lifted to the predetermined position, the pressure-bearing ring plate supports the steel dome, providing temporary fixing. Simultaneously, after the overall casting is completed following the air-lifting, it reinforces the steel dome, improving the structural reliability of the storage tank's steel dome.
[0025] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.
Claims
1. A temporary fixing and correction device for air jacking of a steel dome of a storage tank, characterized in that, The temporary fixing and correction device for air-lifting the steel dome of the storage tank is used for auxiliary fixing after the steel dome of the storage tank is air-lifted to a predetermined position. The temporary fixing and correction device for air-lifting the steel dome of the storage tank includes a steel bracket fixed inside the concrete wall, a pressure-bearing ring fixed on the steel bracket, and anchors fixed to the pressure-bearing ring. The pressure-bearing ring includes a support steel plate and a pressure-bearing ring plate that are welded to each other. The anchors include a long steel plate and a short steel plate that are perpendicular to each other.
2. The temporary fixing and correction device for air jacking of the steel dome of the storage tank according to claim 1, characterized in that, The included angle between the supporting steel plate and the pressure ring plate is 120°~135°.
3. The temporary fixing and correction device for air jacking of the steel dome of the storage tank according to claim 1, characterized in that, The steel support includes a support column fixed inside the concrete wall, a support plate welded to the support column, and a reinforcing plate bolted to the upper end of the support column. The bottom of the support steel plate is welded to the support plate, and the sides of the support steel plate are welded to the reinforcing plate.
4. The temporary fixing and correction device for air jacking of the steel dome of a storage tank according to claim 1, characterized in that, The thickness of the long steel plate is greater than the thickness of the short steel plate, and the thickness of the long steel plate is greater than the thickness of the pressure ring plate.
5. The temporary fixing and correction device for air jacking of the steel dome of the storage tank according to claim 1, wherein the end of the pressure-bearing ring plate is a triangular wedge structure.
6. The temporary fixing and correction device for air jacking of the steel dome of the storage tank according to claim 1, wherein the pressure-bearing ring plate is welded to the steel dome of the storage tank to achieve auxiliary fixing after the steel dome of the storage tank is air-jacked to a predetermined position.