LNG storage tank ceiling straightening and fastening device and installation structure
Patent Information
- Application Number
- CN202522571559.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-12-03
AI Technical Summary
[0003]实际施工时，穹顶与罐顶之间的距离较大，调节时缺乏专用工具，在调整LNG储罐穹顶与吊顶的间距时，工具组装拆卸繁琐，生产效率低，施工成本高
1.本实用新型装置简单，在吊杆上利用U形夹板进行固定，在第一连接板和第二连接板上利用螺栓头卡接在C形板扣的C形开口中，调直紧固装置与安装结构之间不涉及螺纹连接等操作复杂的连接方法，便于携带安装，安装拆卸方便，提高施工效率。
Smart Images
Figure CN224860415U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LNG storage tank installation technology, specifically to an LNG storage tank ceiling straightening and fastening device and installation structure. Background Technology
[0002] LNG storage tanks are large, cryogenic storage tanks used for storing natural gas at atmospheric pressure. They consist of a two-layer structure: an outer LNG tank dome and an inner tank roof. The LNG tank dome has high structural rigidity and is not easily deformed. Numerous booms extend downwards from the lower surface of the LNG tank dome, connecting to the tank roof, which is a suspended ceiling composed of multiple suspended panels. The booms connect to these panels. Because the tank roof is relatively thin, the suspended ceiling acts as a canopy structure, requiring external force to support its shape. The actual stress state is as follows: the suspended panels are suspended below the LNG tank dome using numerous booms, and the LNG tank dome provides shape support for the inner tank roof. Therefore, the shape characteristics of the inner tank roof, such as its overall levelness, need to be adjusted by varying the distance between the LNG tank dome and the inner suspended ceiling.
[0003] In actual construction, the distance between the dome and the tank top is large, and there is a lack of special tools for adjustment. When adjusting the distance between the LNG storage tank dome and the ceiling, the tool assembly and disassembly are cumbersome, resulting in low production efficiency and high construction costs. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an LNG storage tank ceiling straightening and fastening device and installation structure. It utilizes two U-shaped brackets to connect the LNG storage tank dome's hanging rods to the ceiling below, making assembly and disassembly convenient and improving operational efficiency.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.
[0006] In the first aspect, this utility model provides an LNG storage tank ceiling straightening and fastening device, including: a U-shaped clamp, a lifting mechanism and a C-shaped plate buckle; The opening size of the U-shaped clamp is the same as the inner section size, and a lifting ring is installed on one outer side. The lifting position of the lifting ring is spaced at a set distance from the inner section. The lifting mechanism is mounted on the U-shaped clamp via a lifting ring, and the lower part of the lifting mechanism is connected to the C-shaped plate buckle; The C-shaped buckle includes a lifting hole and an oblique part below the lifting hole. The oblique part includes a C-shaped opening with the opening direction facing downwards. The oblique part is oblique to one side of the axis of the lifting hole.
[0007] Optionally, the U-shaped clamp includes two parallel plates connected at their roots, with the two parallel plates facing each other and parallel to each other. A lifting ring is installed on the outer side of one of the plates, and the lifting ring is installed vertically on the outer side of the plate. The plate and the lifting ring are fixedly connected by bolts, and the axis of the lifting ring hole is parallel to the opening direction of the U-shaped clamp.
[0008] Optionally, the lifting mechanism is an electric hoist or a manual winch.
[0009] Optionally, the C-shaped opening of the skewed portion is tapered inward on both sides, so that the opening size is smaller than the internal spacing.
[0010] Optionally, the skew direction of the C-shaped plate buckle is the same as the direction of the U-shaped clamp relative to the lifting device.
[0011] Secondly, this utility model provides an LNG storage tank ceiling installation structure based on the above-mentioned LNG storage tank ceiling straightening and fastening device, including: a hanging rod, a first connecting plate and a second connecting plate; The upper end of the boom is connected to the lower surface of the LNG storage tank dome, and the boom can be locked in a U-shaped clamp. The first connecting plate is connected to the ceiling of the storage tank at its lower part. The width of the first connecting plate is less than the inner spacing of the C-shaped opening, but greater than the opening size of the C-shaped opening; and the thickness of the first connecting plate is less than the inner height of the C-shaped opening. The first connecting plate and the second connecting plate are connected by snap-fit bolts, and the bolt head of the snap-fit bolt can be locked above the C-shaped opening of the inclined part of the C-shaped plate buckle; The connection position between the second connecting plate and the suspension rod is adjustable.
[0012] Optionally, the boom is made of flat steel.
[0013] Optionally, the sum of the thickness of the first connecting plate, the thickness of the second connecting plate, and the bolt head height of the snap-fit bolt is greater than the inner height of the C-shaped opening of the above-mentioned LNG storage tank ceiling straightening and fastening device.
[0014] Optionally, the boom and the first connecting plate are respectively installed on both sides of the second connecting plate.
[0015] Optionally, the first connecting plate is connected to the stiffening plate above the ceiling of the storage tank.
[0016] The beneficial effects of this utility model are as follows: 1. This utility model device is simple. It is fixed on the rod using a U-shaped clamp. The bolt head is used to snap into the C-shaped opening of the C-shaped plate buckle on the first and second connecting plates. The straightening and fastening device does not involve complex connection methods such as threaded connection between the device and the installation structure. It is easy to carry and install, and easy to install and disassemble, thus improving construction efficiency.
[0017] 2. This utility model has a lifting ring installed on one side of the U-shaped clamp. During operation, the device can be locked to a specific position of the lifting rod by its own weight. An inclined part is set on the C-shaped plate buckle so that the upper U-shaped clamp and the lower locking bolt are distributed as vertically as possible, which helps to maintain the vertical posture of the lifting mechanism and improves the safety of operation.
[0018] 3. The components of this utility model have simple structures, do not require precise fit, are easy to manufacture and reuse, and are wear-resistant and durable. Attached Figure Description
[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0020] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.
[0021] Figure 1 This is a front structural diagram of an embodiment of the present invention; Figure 2 This is a side view of the structure in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the U-shaped clamp and the lifting ring in an embodiment of this utility model; Figure 4 This is a structural schematic diagram of the C-shaped plate buckle in an embodiment of this utility model; Among them, 1. lifting rod; 2. U-shaped clamp; 3. bolt; 4. nut; 5. lifting ring; 6. lifting mechanism; 7. tank ceiling; 8. second connecting plate; 9. first connecting plate; 10. snap bolt; 11. C-shaped plate buckle; 12. stiffening plate; 13. lifting hole; 14. slant part; 15. C-shaped opening. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] Example 1 This embodiment provides an LNG storage tank ceiling straightening and fastening device, the overall structure of which is as follows: Figure 2 As shown, it includes: a U-shaped clamp 2, a lifting mechanism 6, and a C-shaped plate buckle 11; as Figure 3 shown, the opening dimension of the U-shaped clamping plate 2 is the same as the inner span dimension, a lifting ring 5 is mounted on the single outer side surface on the right side, and a set distance is spaced between the lifting position of the lifting ring 5 and the inner span; as Figure 2 shown, the hoisting mechanism 6 is mounted on the U-shaped clamping plate 2 through the lifting ring 5, and a C-shaped plate shackle 11 is connected below the hoisting mechanism 6; as Figure 4 shown, the C-shaped plate shackle 11 includes a lifting hole 13 and an inclined portion 14 below the lifting hole 13, the inclined portion 14 includes a C-shaped opening 15, the opening direction of the C-shaped opening 15 faces downward, and the inclined portion 14 inclines to one single side of the axis of the lifting hole 13.
[0024] Through the above arrangement, as Figure 2 shown, the suspender 1 is clamped on the inner surface of the U-shaped clamping plate 2. Since the lifting ring 5 is spaced a set distance from the clamping position of the U-shaped clamping plate 2, under the influence of the gravity of the hoisting mechanism 6 and when the hoisting mechanism 6 tightens the chain, the U-shaped clamping plate 2 has a tendency to rotate, which further increases the friction force of the U-shaped clamping plate 2 on the suspender 1, so that the U-shaped clamping plate 2 cannot move up and down along the suspender 1; similarly, the C-shaped plate shackle 11 is clamped on the storage tank ceiling 7 below, and as the hoisting mechanism 6 tightens the chain, the distance between the U-shaped clamping plate 2 and the C-shaped plate shackle 11 is shortened, realizing the purpose of shortening the distance between the storage tank ceiling 7 and the suspender 1.
[0025] as Figure 3 shown, the U-shaped clamping plate 2 includes two parallel plates connected at the root portions, the facing surfaces of the two parallel plates are parallel to each other, the outer side of one of the plates is mounted with the lifting ring 5, and the lifting ring is perpendicularly mounted on the outer side of the plate; The plate and the lifting ring 5 are fixedly connected through a bolt 3 and a nut 4, and the hole axis of the lifting ring 5 is parallel to the opening direction of the U-shaped clamping plate 2.
[0026] The hoisting mechanism 6 is an electric hoist or a manual winch, which is lightweight and easy to move, and can be conveniently mounted on the suspender 1 together with the U-shaped clamping plate 2.
[0027] as Figure 4 shown, both sides of the opening of the C-shaped opening of the inclined portion 14 are retracted inward, so that the opening dimension is smaller than the inner span, that is, a1<a2, which prevents the component clamped by the C-shaped plate shackle 11 from falling out of the opening.
[0028] The inclination direction of the C-shaped plate shackle 11 is the same as the direction of the U-shaped clamping plate 2 relative to the hoisting device, that is, as Figure 2 shown, the inclined portion 14 of the C-shaped plate shackle 11 and the U-shaped clamping plate 2 are located on the same side of the hoisting mechanism 6.
[0029] Embodiment 2 This embodiment provides an LNG storage tank ceiling installation structure based on the LNG storage tank ceiling straightening and fastening device in Embodiment 1, including: a lifting rod 1, a first connecting plate 9, and a second connecting plate 8; like Figure 1 As shown, the upper end of the boom 1 is connected to the lower surface of the LNG storage tank dome, and the boom 1 can be locked in the U-shaped clamp 2; The first connecting plate 9 is connected to the tank ceiling 7 below. Figure 1 The width of the first connecting plate 9 is A, which is less than Figure 4 The internal spacing a2 of the C-shaped opening 15 is greater than the opening size a1 of the C-shaped opening 15; and the thickness of the first connecting plate 9 is less than the internal spacing height b of the C-shaped opening 15. like Figure 2 As shown, the first connecting plate 9 and the second connecting plate 8 are connected by a snap-fit bolt 10, and the bolt head of the snap-fit bolt 10 can be snapped above the C-shaped opening 15 of the inclined part 14 of the C-shaped plate buckle 11. The connection position between the second connecting plate 8 and the hanger rod 1 is adjustable.
[0030] Figure 2 In order to facilitate a secure connection with the U-shaped clamp 2, the lifting rod 1 is made of flat steel. The thickness of the flat steel is slightly smaller than the opening spacing of the U-shaped clamp 2, which makes it easy for the U-shaped clamp 2 to be quickly installed on the lifting rod 1. Furthermore, the U-shaped clamp 2 does not need to be rotated at a large angle, so that it can be securely clamped at a specific height of the lifting rod 1 and bear the tension of the lifting mechanism 6. In addition, the width of the flat steel is smaller than the opening size a1 of the C-shaped opening 15, so that the flat steel can be removed from the C-shaped opening 15.
[0031] The sum of the thickness of the first connecting plate 9, the thickness of the second connecting plate 8, and the height of the bolt head of the snap-fit bolt 10 is B, which is greater than... Figure 4 If the inner height b of the C-shaped opening 15 of the C-shaped plate buckle 11 is such that when the first connecting plate 9 and the second connecting plate 8 are installed in the C-shaped opening 15 and the snap-fit bolts 10 are installed, the C-shaped plate buckle 11 can lift the whole formed by the first connecting plate 9 and the second connecting plate 8, thereby lifting the tank ceiling 7 connected below the first connecting plate 9.
[0032] The boom 1 and the first connecting plate 9 are respectively installed on both sides of the second connecting plate 8. After installation, the skew direction of the skewed part 14 of the C-shaped plate buckle 11 is the same as the direction of the U-shaped clamp 2 relative to the lifting mechanism 6, so that the lifting mechanism 6 is kept as vertical as possible and the safety is improved.
[0033] The first connecting plate 9 is connected to the stiffening plate 12 above the storage tank ceiling 7. The stiffening plate 12 is vertically welded to the upper surface of the storage tank ceiling 7 and acts as a skeleton.
[0034] Using the LNG storage tank ceiling straightening and fastening device in Example 1 and the installation structure in Example 2, the operation steps for adjusting the distance between the LNG storage tank dome and the ceiling are as follows: When the boom 1 is locked in the opening of the U-shaped clamp 2, the U-shaped clamp 2 will be locked on the surface of the boom 1 and will no longer move up or down under the gravity of the lifting mechanism 6 and the lower C-shaped plate buckle 11. The first connecting plate 9 is fixedly connected to the stiffening plate 12; Operate the lifting mechanism 6 to raise or lower the C-shaped plate buckle 11 to a suitable position, so that the first connecting plate 9 is located in the C-shaped opening 15 of the C-shaped plate buckle 11; A second connecting plate 8 is installed above the C-shaped plate buckle 11. The second connecting plate 8 and the first connecting plate 9 are connected as one unit by the snap-fit bolt 10, and the bolt head of the snap-fit bolt 10 is located on one side of the lifting hole 13. When the lifting mechanism 6 lifts the C-shaped plate buckle 11, the skew part 14 and the lifting hole 13 can press against the snap-fit bolt 10 to prevent loosening. For safety, a nut is installed on the bolt rod side of the snap-fit bolt 10 at the same time. Operate the lifting mechanism 6 to raise the tank ceiling 7. The position of the second connecting plate 8 relative to the boom 1 will gradually rise. After it rises to a suitable position, the operator will use welding or other methods to fix the second connecting plate 8 to the boom 1 together, and fix the second connecting plate 8 and the first connecting plate 9 together. Remove the snap-fit bolts 10. Raise the C-shaped plate buckle 11 to the height of the lifting rod 1, so that the flat iron-shaped lifting rod 1 is disengaged from the C-shaped opening 15. Then remove the U-shaped clamp 2. The distance between the storage tank ceiling 7 and the LNG storage tank dome above at this position is adjusted, and the LNG storage tank ceiling straightening and fastening device is disassembled.
[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A straightening and fastening device for the ceiling of an LNG storage tank, characterized in that, include: U-shaped clamps, lifting mechanism and C-shaped plate buckles; The opening size of the U-shaped clamp is the same as the inner section size, and a lifting ring is installed on one outer side. The lifting position of the lifting ring is spaced at a set distance from the inner section. The lifting mechanism is mounted on the U-shaped clamp via a lifting ring, and the lower part of the lifting mechanism is connected to the C-shaped plate buckle; The C-shaped buckle includes a lifting hole and an oblique part below the lifting hole. The oblique part includes a C-shaped opening with the opening direction facing downwards. The oblique part is oblique to one side of the axis of the lifting hole.
2. The LNG storage tank ceiling straightening and fastening device as described in claim 1, characterized in that, The U-shaped clamp includes two parallel plates connected at their roots, with the two parallel plates facing each other and parallel to each other. A lifting ring is installed on the outer side of one of the plates, and the lifting ring is installed vertically on the outer side of the plate. The plate and the lifting ring are fixedly connected by bolts, and the axis of the lifting ring hole is parallel to the opening direction of the U-shaped clamp.
3. The LNG storage tank ceiling straightening and fastening device as described in claim 1, characterized in that, The lifting mechanism is an electric hoist or a manual winch.
4. The LNG storage tank ceiling straightening and fastening device as described in claim 1, characterized in that, The C-shaped opening of the skewed part tapers inward on both sides, making the opening size smaller than the internal spacing.
5. The LNG storage tank ceiling straightening and fastening device as described in claim 1, characterized in that, The skew direction of the C-shaped plate buckle is the same as the direction of the U-shaped clamp relative to the hoisting device.
6. An LNG storage tank ceiling installation structure based on the LNG storage tank ceiling straightening and fastening device as described in any one of claims 1-5, characterized in that, include: The boom, the first connecting plate, and the second connecting plate; The upper end of the boom is connected to the lower surface of the LNG storage tank dome, and the boom can be locked in a U-shaped clamp. The first connecting plate is connected to the ceiling of the storage tank at its lower part. The width of the first connecting plate is less than the inner spacing of the C-shaped opening, but greater than the opening size of the C-shaped opening; and the thickness of the first connecting plate is less than the inner height of the C-shaped opening. The first connecting plate and the second connecting plate are connected by snap-fit bolts, and the bolt head of the snap-fit bolt can be locked above the C-shaped opening of the inclined part of the C-shaped plate buckle; The connection position between the second connecting plate and the suspension rod is adjustable.
7. The LNG storage tank ceiling installation structure as described in claim 6, characterized in that, The sum of the thickness of the first connecting plate, the thickness of the second connecting plate, and the bolt head height of the snap-fit bolt is greater than the inner height of the C-shaped opening of the aforementioned LNG storage tank ceiling straightening and fastening device.
8. The LNG storage tank ceiling installation structure as described in claim 6, characterized in that, The boom and the first connecting plate are respectively installed on both sides of the second connecting plate.
9. The LNG storage tank ceiling installation structure as described in claim 6, characterized in that, The first connecting plate is connected to the stiffening plate above the ceiling of the storage tank.
10. The LNG storage tank ceiling installation structure as described in claim 6, characterized in that, The suspension rod is made of flat steel, the thickness of which is smaller than the opening spacing of the U-shaped clamp, and the width of which is smaller than the opening size of the C-shaped opening.