An adjustable elastic sealing structure for the floating roof of a floating roof tank.
By employing a double-layer sealing ring and a detachable, involute, adjustable elastic sealing structure for the floating roof in the floating roof tank, the problem of easy damage to single-layer seals is solved, thereby improving the reliability and safety of the seal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI MEIXIANG IND
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-31
AI Technical Summary
The single-layer sealing structure of existing floating roof tanks is susceptible to corrosion, temperature changes and friction, which leads to aging and damage of the seals, affecting the continuous operation efficiency and safety of the tank.
The floating roof tank adopts an involute adjustable elastic sealing structure with an internal floating plate, including a double-layer sealing ring and a detachable design with bolted connections, forming a double seal to ensure sealing reliability and facilitate replacement when the seal is damaged.
It significantly improves sealing reliability, reduces oil and gas leakage, lowers operation and maintenance costs, and ensures the continuous operation and safety of storage tanks.
Smart Images
Figure CN224577191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of storage tank technology, and in particular to an adjustable elastic sealing structure with an involute floating roof inside a floating roof storage tank. Background Technology
[0002] Floating roof tanks are core equipment in the petroleum, chemical, and other industries for storing crude oil, refined oil products, and other volatile liquid media. Their key advantage lies in the floating design of the floating roof, which reduces the contact area between the stored liquid and air, thereby minimizing evaporation losses and offering both energy conservation, environmental protection, and safety protection. To achieve this function, the floating roof is typically made of steel or aluminum. The structural strength and buoyancy of these materials allow the floating roof to float stably on the surface of the stored liquid within the tank, rising and falling synchronously with changes in the liquid level.
[0003] A sealing device must be installed on the outer edge of the floating roof. This is a key component for achieving energy conservation, environmental protection, and safe operation of floating roof tanks. Currently, most floating roof sealing devices widely used in the industry are single-layer sealing structures. Although this type of structure is simple and low in cost, it has significant drawbacks: single-layer sealing relies on a single sealing element to achieve gap sealing. The sealing element is easily affected by factors such as long-term corrosion of the stored liquid, temperature changes, and friction from the rise and fall of the floating roof, and is prone to aging and damage. Once the sealing element is damaged, the machine must be shut down immediately for replacement; otherwise, it will lead to a large amount of oil and gas leakage, which will not only increase the operation and maintenance costs but also affect the continuous operation efficiency of the tank. It is difficult to meet the high requirements of modern tanks for sealing reliability and stability. In order to solve the above problems, this utility model proposes an involute adjustable elastic sealing structure for the floating roof inside the floating roof tank. Utility Model Content
[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an adjustable elastic sealing structure with an involute floating roof inside a floating roof tank, which solves the problems mentioned in the background technology.
[0005] (II) Technical Solution To achieve the above objectives, this utility model adopts the following technical solution: a gradually opening adjustable elastic sealing structure for the floating roof of a floating roof tank, comprising: an installation ring fixedly connected to the side wall of the floating roof body, a fixing ring fixedly connected to the inner wall of the installation ring, a first sealing mechanism for sealing the gap between the floating roof body and the tank wall provided in the installation ring, the first sealing mechanism including a second sealing ring and a third sealing ring provided in the installation ring, a skirt ring provided at the lower end of the third sealing ring, and a second sealing mechanism for sealing the gap between the floating roof body and the tank wall provided on the floating roof body.
[0006] Preferably, the second sealing mechanism includes a connecting ring disposed on the floating roof body, a flattening ring fixedly connected to the side wall of the connecting ring, and a first sealing ring disposed inside the flattening ring.
[0007] Preferably, the upper end of the connecting ring is provided with multiple bolts, and the multiple bolts are arranged at equal intervals.
[0008] Preferably, a plurality of first limiting rings are fixedly connected to the inner wall of the mounting ring, and a plurality of second limiting rings are fixedly connected to the inner wall of the mounting ring.
[0009] Preferably, the upper end of the mounting ring is fixedly connected to two third limiting rings, and the upper end of the flattening ring is fixedly connected to multiple baffles.
[0010] (III) Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: This invention features a double-layer sealing structure formed by a first sealing mechanism, a second sealing ring, and a third sealing ring, replacing the traditional single-layer seal and significantly improving sealing reliability. When one of the sealing rings is damaged, only the damaged component needs to be replaced, avoiding large-scale oil and gas leakage caused by damage to the single-layer seal, and reducing maintenance costs and safety risks. Attached Figure Description
[0011] Figure 1 This is a partial structural diagram of an adjustable elastic sealing structure for an internal floating roof tank proposed in this utility model. Figure 2 for Figure 1 Enlarged view of the structure at point A; Figure 3 This is a side view of an adjustable elastic sealing structure for an internal floating roof tank proposed in this utility model. Figure 4 This is another side view of the involute adjustable elastic sealing structure of the floating roof tank proposed in this utility model.
[0012] In the diagram: 1. Floating disc body, 2. Connecting ring, 3. Flattening ring, 4. First sealing ring, 5. Second sealing ring, 6. Fixing ring, 7. Third sealing ring, 8. Skirt ring, 9. First limiting ring, 10. Second limiting ring, 11. Mounting ring, 12. Third limiting ring, 13. Baffle plate. Detailed Implementation
[0013] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0014] This utility model provides a technical solution: Please see Figures 1-4 A gradually opening adjustable elastic sealing structure for the floating roof of a floating roof tank includes: an installation ring 11 fixedly connected to the side wall of the floating roof body 1; a fixing ring 6 fixedly connected to the inner wall of the installation ring 11; and a first sealing mechanism for sealing the gap between the floating roof body 1 and the tank wall within the installation ring 11. The first sealing mechanism includes a second sealing ring 5 and a third sealing ring 7 disposed within the installation ring 11. A skirt ring 8 is provided at the lower end of the third sealing ring 7, and the skirt ring 8 is used to seal the lower end of the floating roof body 1.
[0015] The floating roof body 1 is provided with a second sealing mechanism for sealing the gap between the floating roof body 1 and the tank wall. The second sealing mechanism includes a connecting ring 2 provided on the floating roof body 1, a flattening ring 3 fixedly connected to the side wall of the connecting ring 2, and a first sealing ring 4 provided inside the flattening ring 3.
[0016] Furthermore, the upper end of the connecting ring 2 is provided with multiple bolts, which are equally spaced, so that the connecting ring 2 does not need to be welded to the floating table body 1, making it detachable and convenient for replacing the first sealing ring 4, the second sealing ring 5 and the third sealing ring 7.
[0017] Furthermore, multiple first limiting rings 9 are fixedly connected to the inner wall of the mounting ring 11, and multiple second limiting rings 10 are fixedly connected to the inner wall of the mounting ring 11, which can limit the second sealing ring 5 and the third sealing ring 7.
[0018] Furthermore, two third limiting rings 12 are fixedly connected to the upper end of the mounting ring 11, which can limit the first sealing ring 4. Multiple baffles 13 are fixedly connected to the upper end of the flattening ring 3, which can prevent the first sealing ring 4 from being easily squeezed directly upward from the gap between the floating roof body 1 and the tank wall after long-term use.
[0019] In practical use, the working principle of this utility model is as follows: Before the floating roof tank can operate normally, the sealing structure needs to be assembled: the third sealing ring 7 and the second sealing ring 5 are sequentially fitted into the mounting ring 11. The first limiting ring 9 and the second limiting ring 10 on the inner wall of the mounting ring 11 limit and fix the third sealing ring 7 and the second sealing ring 5 respectively, ensuring that they are in close contact with the tank wall to form the first layer of seal; the skirt ring 8 at the lower end of the third sealing ring 7 hangs down naturally to supplement the seal between the lower end of the floating roof body 1 and the tank wall; then, the first sealing ring 4 is installed in the flattening ring 3, and the second sealing mechanism is fixed to the floating roof body 1 by the bolts at the upper end of the connecting ring 2, so that the first sealing ring 4 covers the outside of the second sealing ring 5 and the third sealing ring 7 to form the second layer of seal. At the same time, the third limiting ring 12 at the upper end of the mounting ring 11 is used to limit the first sealing ring 4 laterally, and the baffle 13 at the upper end of the flattening ring 3 prevents the first sealing ring 4 from being squeezed upward; When the liquid level in the storage tank changes, the floating roof body 1 rises and falls synchronously with the liquid level. During this process: the second sealing ring 5 and the third sealing ring 7 of the first sealing mechanism always adhere tightly to the tank wall due to their own elasticity, and intercept most of the oil and gas through the double-layer structure, preventing it from escaping from the gap between the floating roof body 1 and the tank wall; if one of the second sealing ring 5 or the third sealing ring 7 is damaged, the other sealing ring can still maintain the basic sealing effect and prevent a large amount of oil and gas from leaking out; at the same time, the first sealing ring 4 of the second sealing mechanism forms a secondary protection for the first sealing mechanism, further intercepting a small amount of oil and gas that may overflow, and greatly improving the overall sealing effect; When the seal needs to be replaced, simply unscrew the bolts at the upper end of the connecting ring 2, remove the connecting ring 2 and the flattening ring 3 to replace the first sealing ring 4; for the second sealing ring 5 or the third sealing ring 7, the aged parts can be directly removed inside the mounting ring 11, and after replacing the new sealing ring, it can be fixed again by the first limiting ring 9 and the second limiting ring 10 without removing the entire sealing structure, making the operation convenient and efficient.
[0020] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.
Claims
1. A floating roof tank inner floating disc involute adjustable elastic sealing structure, comprising: An installation ring (11) fixedly connected to the side wall of the floating roof body (1) is characterized in that: a fixing ring (6) is fixedly connected to the inner wall of the installation ring (11), and a first sealing mechanism for sealing the gap between the floating roof body (1) and the tank wall is provided in the installation ring (11). The first sealing mechanism includes a second sealing ring (5) and a third sealing ring (7) provided in the installation ring (11). A skirt ring (8) is provided at the lower end of the third sealing ring (7). A second sealing mechanism for sealing the gap between the floating roof body (1) and the tank wall is provided on the floating roof body (1).
2. The floating roof tank inner floating disc involute adjustable elastic sealing structure according to claim 1, characterized in that: The second sealing mechanism includes a connecting ring (2) set on the floating roof body (1), and a flattening ring (3) is fixedly connected to the side wall of the connecting ring (2), and a first sealing ring (4) is provided inside the flattening ring (3).
3. The adjustable elastic seal structure of the floating roof inner floating disc involute type of claim 2, wherein: The upper end of the connecting ring (2) is provided with multiple bolts, and the multiple bolts are arranged at equal intervals.
4. The adjustable elastic sealing structure of the involute type of the floating roof in the floating roof tank according to claim 3, characterized in that: The inner wall of the mounting ring (11) is fixedly connected with a plurality of first limiting rings (9), and the inner wall of the mounting ring (11) is fixedly connected with a plurality of second limiting rings (10).
5. The adjustable flexible seal structure of the floating roof in the floating roof tank with involute type according to claim 4, characterized in that: The upper end of the mounting ring (11) is fixedly connected to two third limiting rings (12), and the upper end of the flattening ring (3) is fixedly connected to multiple baffles (13).