Root anti-leakage structure of large glass fiber reinforced plastic container
By embedding the bottom of the cylinder into the concrete foundation structure of the large fiberglass container and combining multiple sealing layers and transition layers, the leakage problem at the root of the cylinder is solved, the stability and sealing of the structure are improved, and it can be adapted to the use of larger-sized fiberglass containers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GRP
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-07
AI Technical Summary
When large fiberglass containers have a large diameter and volume, leakage is likely to occur at the base of the container due to concentrated liquid pressure. Existing structures are unable to effectively disperse and counteract the liquid pressure, leading to tearing and leakage at internal joints.
An annular groove is made in the concrete foundation structure and embedded in the bottom of the cylinder. Combined with internal and external anti-leakage components, including multiple sealing layers and transition layers, multiple barriers are formed to enhance the restraint and sealing of the cylinder root.
It effectively prevents leakage and spread, improves structural stability and resistance to deformation, adapts to the needs of FRP containers with larger diameters and volumes, and reduces local deformation and safety hazards.
Smart Images
Figure CN224466631U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fiberglass container technology, and in particular to a leak-proof structure at the root of a large fiberglass container. Background Technology
[0002] Large fiberglass containers on the market, especially vertical storage tanks, typically use a concrete planar foundation for their base structure, with a circular retaining ring around the perimeter for edge restraint. When the container diameter and height are not particularly large (generally diameter ≤ 10-12 meters, volume ≤ 2000 cubic meters), the hydrostatic pressure of the liquid at the bottom of the tank is still within the range that a conventional concrete foundation and retaining ring can withstand. This structure effectively prevents the base of the tank from slipping outwards and provides a certain degree of horizontal restraint, thus meeting the usage requirements well for large storage tanks with small to medium diameters.
[0003] However, when the container diameter exceeds 12 meters or the volume reaches 3000-5000 cubic meters or more, the liquid pressure at the base of the container increases dramatically. At this point, stress concentration easily occurs at the internal seal at the bottom of the container. Since the base of the container is in a semi-open state, the internal seal provides limited constraint and cannot effectively disperse or counteract the liquid pressure. This can easily lead to tearing at the internal joints, resulting in leakage. Utility Model Content
[0004] The purpose of this utility model is to provide a leak-proof structure at the root of a large fiberglass container, which effectively enhances the constraint of the sealing part at the root of the cylinder, improves the deformation resistance and leak-proof effect of the container root, thereby meeting the needs of fiberglass containers with larger diameters and larger volumes for leak-proofing at the root.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A leak-proof structure at the base of a large fiberglass container, the fiberglass container including a tank bottom and a cylindrical body, wherein the tank bottom is located at the bottom of the cylindrical body, and the leak-proof structure at the base of the large fiberglass container also includes...
[0007] A concrete foundation structure, wherein an annular groove is formed on the concrete foundation structure, the bottom of the cylinder is embedded in the groove, and the bottom of the tank is attached to the upper surface of the concrete foundation structure;
[0008] An internal leak-proof assembly includes a first inner sealing layer, an arc transition layer, and a second inner sealing layer. The first inner sealing layer is arranged in a ring around the junction of the inner surface of the cylinder and the upper surface of the tank bottom, for sealing the connection between the cylinder and the tank bottom. The arc transition layer covers the first inner sealing layer, and its coverage extends beyond the boundaries of both ends of the first inner sealing layer, for reducing stress concentration. The second inner sealing layer covers the arc transition layer, and its coverage extends beyond the boundaries of both ends of the arc transition layer.
[0009] An external leak-proof component includes an external sealing layer, which is circumferentially disposed on the outer surface of the cylinder and sealed to the concrete foundation structure.
[0010] Furthermore, the arc transition layer is configured as an R-angle structure concave to the first inner sealing layer.
[0011] Furthermore, the R-angle structure is formed by scraping with mortar material.
[0012] Furthermore, both ends of the second inner sealing layer are chamfered.
[0013] Furthermore, the extent to which the second inner sealing layer covers the inner surface of the cylinder and the upper surface of the tank bottom can be adjusted according to the diameter of the cylinder or the volume of the fiberglass container.
[0014] Furthermore, the first inner sealing layer, the arc transition layer, and the second inner sealing layer respectively cover the inner surface of the cylinder and the upper surface of the tank bottom symmetrically.
[0015] Furthermore, the internal leak-proof assembly also includes an internal filling layer, which fills the gap between the inner surface of the cylinder, the groove, and the first internal sealing layer.
[0016] Furthermore, the external leak-proof assembly also includes an external filling layer, which fills the gap between the outer surface of the cylinder, the groove, and the external sealing layer.
[0017] Furthermore, both the inner filling layer and the outer filling layer are made of resin mortar material.
[0018] Furthermore, the second inner sealing layer is made of the same composite material as the bottom of the tank.
[0019] The beneficial effects of this utility model are:
[0020] This utility model provides a root-proof leakage prevention structure for large fiberglass containers, including a concrete foundation structure, an inner leakage prevention component, and an outer leakage prevention component. By embedding the bottom of the cylinder into an annular groove opened in the concrete foundation structure, it effectively prevents the cylinder from sliding or displacing at the root due to a sharp increase in internal hydraulic pressure, thus improving the stability of the overall structure. By combining the synergistic effect of the arc transition layer and multiple inner sealing layers, it effectively eliminates stress concentration points and expands the stress dispersion area, significantly reducing local deformation at the root of the cylinder caused by liquid static pressure. It effectively prevents structural failure and safety hazards caused by stress concentration or micro-leakage during long-term use. The inner and outer double sealing layers form multiple barriers, preventing leakage diffusion even if a single layer is damaged, thus enabling the structure to adapt to fiberglass containers with larger diameters and larger volumes. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the anti-leakage structure at the base of a medium-to-large fiberglass container according to this utility model.
[0022] In the picture:
[0023] 100. Can bottom; 200. Cylinder body;
[0024] 1. Concrete foundation structure; 2. Internal anti-leakage component; 21. First inner sealing layer; 22. Arc transition layer; 23. Second inner sealing layer; 231. Chamfer; 24. Inner filling layer; 3. External anti-leakage component; 31. External sealing layer; 32. External filling layer. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0029] In existing technology, fiberglass containers include a bottom 100 and a cylindrical body 200. The bottom 100 is placed at the bottom of the cylindrical body 200. When the diameter and volume of the fiberglass container exceed a certain value (diameter ≥ 12 meters or volume ≥ 3000-5000 cubic meters), the liquid pressure at the base of the container increases sharply. At this time, stress concentration is likely to occur at the internal seal at the bottom of the cylindrical body 200. Since the base of the cylindrical body 200 is in a semi-open state, the internal seal has limited restraint on the cylindrical body 200 and cannot effectively disperse and counteract the liquid pressure. This easily leads to tearing at the internal joints, resulting in leakage problems.
[0030] Please refer to Figure 1As shown, to solve the above problems, this embodiment provides a root-level anti-leakage structure for a large fiberglass container, including a concrete foundation structure 1, an inner anti-leakage component 2, and an outer anti-leakage component 3. An annular groove is formed on the concrete foundation structure 1, and the bottom of the cylinder 200 is embedded in the groove. The tank bottom 100 is attached to the upper surface of the concrete foundation structure 1. The inner anti-leakage component 2 includes a first inner sealing layer 21, an arc transition layer 22, and a second inner sealing layer 23. The first inner sealing layer 21 is circumferentially disposed on the inner surface of the cylinder 200 and... The junction of the upper surface of the tank bottom 100 is used to seal and connect the cylinder 200 and the tank bottom 100; the arc transition layer 22 covers the first inner sealing layer 21 and its coverage extends beyond the boundaries of both ends of the first inner sealing layer 21 to reduce stress concentration; the second inner sealing layer 23 covers the arc transition layer 22 and its coverage extends beyond the boundaries of both ends of the arc transition layer 22; the external anti-leakage component 3 includes an outer sealing layer 31, which is circumferentially disposed on the outer surface of the cylinder 200 and sealed and connected to the concrete foundation structure 1.
[0031] By embedding the bottom of the cylinder 200 into the annular groove opened on the concrete foundation structure 1, the cylinder 200 can be effectively prevented from slipping or shifting at its root due to a sharp increase in internal hydraulic pressure, making the root of the cylinder 200 more stable and ensuring a tight fit between the tank bottom 100 and the upper surface of the concrete foundation structure 1, thereby improving the overall structural stability. The internal anti-leakage component 2 adopts a three-layer sealing design. The first inner sealing layer 21 is set at the junction of the cylinder 200 and the tank bottom 100 to achieve a preliminary seal and prevent direct liquid leakage. The arc transition layer 22 changes the acute angle of the junction between the cylinder 200 and the tank bottom 100 into an arc transition, effectively eliminating stress concentration points and expanding the stress dispersion area. The coverage area of the second inner sealing layer 23 is larger than that of the arc transition layer 22, further enhancing the sealing effect and effectively counteracting the effect of liquid pressure concentration at the root. In addition, an outer sealing layer 31 is set between the outer surface of the cylinder 200 and the concrete foundation structure 1 to block external leakage channels. By enhancing the mechanical fixation and support of the root of the cylinder 200 through the annular groove, and combining the synergistic effect of the arc transition layer 22 and the multi-layer inner sealing layer, the local deformation of the root of the cylinder 200 caused by the hydrostatic pressure of the liquid can be significantly reduced. This effectively prevents structural failure and safety hazards caused by stress concentration or micro-leakage during long-term use. The inner and outer double sealing layers form multiple barriers, which can prevent leakage diffusion even if a single layer is damaged. This allows the structure to be adapted to fiberglass containers with larger diameters and larger volumes.
[0032] Specifically, the arc transition layer 22 is configured with an R-angle structure concave to the first inner sealing layer 21, so that the transition surface forms a natural arc-shaped groove on the surface of the first inner sealing layer 21. This facilitates a tight bond between the arc transition layer 22 and the first inner sealing layer 21, ensuring a smooth transition and improving interlayer adhesion. This effectively disperses and reduces stress concentration, avoiding new stress concentration points caused by interlayer misalignment or protrusions. In addition, the R-angle structure effectively expands the load-bearing area, allowing the hydrostatic pressure of the liquid to be more evenly distributed in the transition area between the cylinder 200 and the tank bottom 100, thus improving the root's resistance to deformation.
[0033] In some optional embodiments, the R-angle structure is formed by scraping mortar material; wherein, the mortar has good plasticity and can be smoothly scraped and shaped at the junction of the cylinder 200 and the tank bottom 100, which facilitates a continuous and uniform arc transition; and the mortar has good adhesion to the fiberglass layer and the concrete base surface, so that the R-angle structure forms a firm bond with the first inner sealing layer 21, the cylinder 200 and the tank bottom 100, and is not easy to fall off; in addition, the mortar itself has high density, and after being scraped and shaped, it fills the tiny gaps that may exist at the junction of the cylinder 200 and the tank bottom 100, improves the overall sealing performance and avoids leakage.
[0034] To further reduce stress concentration under liquid pressure, in some alternative embodiments, both ends of the second inner sealing layer 23 are provided with chamfers 231, so that the transition at both ends of the second inner sealing layer 23 is smoother, and the chamfers 231 can disperse the end shear force and peeling force, reducing interface delamination caused by hydraulic and temperature changes.
[0035] In some alternative embodiments, the extent to which the second inner sealing layer 23 covers the inner surface of the cylinder 200 and the upper surface of the tank bottom 100 can be adjusted according to the diameter of the cylinder 200 or the volume of the fiberglass container to achieve a better sealing effect.
[0036] For example, when the diameter or volume of the fiberglass container's cylinder 200 is larger, the coverage area of its second inner sealing layer 23 on the inner surface of the cylinder 200 and the upper surface of the tank bottom 100 is correspondingly increased to effectively counteract higher liquid pressure and enhance sealing performance; while when the diameter or volume of the cylinder 200 is smaller, the coverage area can be appropriately reduced to avoid material waste.
[0037] In some embodiments, the first inner sealing layer 21, the arc transition layer 22, and the second inner sealing layer 23 respectively cover the inner surface of the cylinder 200 and the upper surface of the tank bottom 100 symmetrically. The symmetrical coverage ensures that the cylinder 200 and the tank bottom 100 are subjected to balanced forces on both sides at the junction. Under the action of liquid static pressure, the risk of uneven deformation or warping at the root of the cylinder 200 is reduced, and each sealing layer is less likely to peel or tear at one end, which helps to maintain the continuity and stability of the overall seal.
[0038] In some optional embodiments, the internal anti-leakage component 2 further includes an internal filling layer 24, which fills the gap between the inner surface of the cylinder 200, the groove and the first internal sealing layer 21, effectively blocking the channel for liquid to seep through the tiny gaps and improving the overall sealing performance; and the internal filling layer 24 is equivalent to a transition pad, which can enhance the adhesion between the components and the overall stability.
[0039] In some optional embodiments, the external anti-leakage component 3 further includes an external filling layer 32, which fills the gap between the outer surface of the cylinder 200, the groove, and the external sealing layer 31. The external filling layer 32 fills the gap between the outer surface of the cylinder 200, the groove, and the external sealing layer 31, which can eliminate gap space and prevent liquid from seeping or spreading along the external micro gaps. When the cylinder 200 is subjected to internal liquid static pressure or external environmental load, the external filling layer 32 can help disperse stress, avoid local concentration, and reduce the risk of cracking of the external sealing layer 31. It can also make the external sealing layer 31 adhere smoothly and evenly to the cylinder 200 and the base surface, reducing local hollowing or warping.
[0040] For example, both the inner filling layer 24 and the outer filling layer 32 are made of resin mortar material; the resin mortar material has good adhesion to fiberglass material and concrete foundation, which can ensure that the inner filling layer 24, the outer filling layer 32 are tightly bonded to the cylinder 200, the groove, the first inner sealing layer 21 and the second inner sealing layer 23, avoiding the formation of leakage channels due to interface peeling; and after the resin mortar is cured, the porosity is low and it is almost impermeable to water, which can effectively seal the gaps and significantly improve the anti-leakage ability.
[0041] In some optional embodiments, the second inner sealing layer 23 is made of the same composite material as the tank bottom 100. Since the two materials are the same, their curing shrinkage rate, thermal expansion coefficient and other properties are consistent, avoiding stress mismatch caused by material differences. At the same time, when the liquid static pressure or temperature changes, the same material can deform synchronously, avoiding relative displacement and shear force between different materials, thereby reducing cracking, hollowing or peeling.
[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A leak-proof structure at the base of a large fiberglass container, the fiberglass container comprising a tank bottom (100) and a cylindrical body (200), wherein the tank bottom (100) is located at the bottom of the cylindrical body (200), characterized in that, The root leak-proof structure of the large fiberglass container also includes A concrete foundation structure (1) is provided with an annular groove, the bottom of the cylinder (200) is embedded in the groove, and the bottom of the tank (100) is attached to the upper surface of the concrete foundation structure (1). The internal leak-proof assembly (2) includes a first inner sealing layer (21), an arc transition layer (22), and a second inner sealing layer (23). The first inner sealing layer (21) is arranged around the junction of the inner surface of the cylinder (200) and the upper surface of the tank bottom (100) to seal and connect the cylinder (200) and the tank bottom (100). The arc transition layer (22) covers the first inner sealing layer (21) and its coverage extends beyond the boundaries of both ends of the first inner sealing layer (21) to reduce stress concentration. The second inner sealing layer (23) covers the arc transition layer (22) and its coverage extends beyond the boundaries of both ends of the arc transition layer (22). The external anti-leakage component (3) includes an external sealing layer (31), which is circumferentially disposed on the outer surface of the cylinder (200) and sealed to the concrete foundation structure (1).
2. The anti-leakage structure at the root of a large fiberglass container according to claim 1, characterized in that, The arc transition layer (22) is configured with an R-angle structure that is concave to the first inner sealing layer (21).
3. The anti-leakage structure at the root of a large fiberglass container according to claim 2, characterized in that, The R-angle structure is formed by scraping mortar material.
4. The anti-leakage structure at the root of a large fiberglass container according to claim 1, characterized in that, Both ends of the second inner sealing layer (23) are provided with chamfers (231).
5. The anti-leakage structure at the root of a large fiberglass container according to claim 4, characterized in that, The extent to which the second inner sealing layer (23) covers the inner surface of the cylinder (200) and the upper surface of the tank bottom (100) can be adjusted according to the diameter of the cylinder (200) or the volume of the fiberglass container.
6. The root-level anti-leakage structure for large fiberglass containers according to any one of claims 1-5, characterized in that, The first inner sealing layer (21), the arc transition layer (22), and the second inner sealing layer (23) respectively cover the inner surface of the cylinder (200) and the upper surface of the tank bottom (100) symmetrically.
7. The root-level anti-leakage structure for large fiberglass containers according to claim 6, characterized in that, The internal leak-proof component (2) further includes an internal filling layer (24), which fills the gap between the inner surface of the cylinder (200), the groove and the first internal sealing layer (21).
8. The anti-leakage structure at the root of a large fiberglass container according to claim 7, characterized in that, The external leak-proof component (3) also includes an external filling layer (32), which fills the gap between the outer surface of the cylinder (200), the groove and the external sealing layer (31).
9. The anti-leakage structure at the root of a large fiberglass container according to claim 8, characterized in that, Both the inner filling layer (24) and the outer filling layer (32) are made of resin mortar material.
10. The anti-leakage structure at the root of a large fiberglass container according to claim 6, characterized in that, The second inner sealing layer (23) is made of the same composite material as the bottom of the tank (100).