Internal reinforcing structure of a glass fiber reinforced plastic storage tank

Abstract

The utility model relates to glass steel storage tank technical field especially for a kind of internal reinforcing structure of glass steel storage tank, including tank body, the inner wall of tank body is equipped with first reinforcing component, the inner chamber of tank body is equipped with second reinforcing component, first reinforcing component includes several annular reinforcing strips, several annular reinforcing strips are longitudinally equidistantly spaced arrangement, the outer diameter of annular reinforcing strip and the inner diameter specification of tank body match, spiral reinforcing rib is equipped between adjacent annular reinforcing strip, the outer diameter of spiral reinforcing rib and the inner diameter specification of tank body match, the height of spiral reinforcing rib is consistent with the spacing of adjacent annular reinforcing strip, second reinforcing component includes center support column, the outside of center support column is equidistantly spaced and is provided with several accommodating grooves, in the utility model, not only can enhance the circumferential strength of tank body, also have good circumferential stress dispersion capacity and axial, radial structural strength, to avoid the local deformation or instability of tank body.

Description

Technical Field

[0001] This utility model relates to the field of fiberglass storage tank technology, specifically to an internal reinforcement structure for a fiberglass storage tank. Background Technology

[0002] Fiberglass reinforced plastic (FRP) storage tanks are composite material tanks made of glass fiber and its products as reinforcing materials and synthetic resin as matrix material through specific processes. They have a number of excellent properties: First, FRP storage tanks are highly corrosion resistant and can resist the erosion of various chemical media such as acids, alkalis, and salts, making them suitable for storing various corrosive liquids, such as chemical raw materials and acid and alkali solutions. Second, they have high strength and rigidity, are relatively lightweight, and are easy to transport and install. In addition, FRP storage tanks have a long service life, generally up to 20 years or more, and have low maintenance costs. Fiberglass storage tanks have a smooth interior, making them resistant to scaling and ensuring the purity of stored liquids. The shape and capacity of fiberglass storage tanks can be customized according to actual needs. They are widely used in industries such as chemical, petroleum, food, pharmaceutical, and wastewater treatment for storing liquids or gases. With technological advancements, the performance of fiberglass storage tanks continues to improve, making them an indispensable storage device in modern industry. Fiberglass reinforced plastic (FRP) storage tanks are typically reinforced internally by increasing the wall thickness through a multi-layered structure and adding annular reinforcing strips to the inner wall. However, relying solely on the strength of the FRP material in the tank wall and the annular reinforcing strips to provide a certain circumferential strength, the overall strength is still not ideal and it is difficult to effectively disperse circumferential stress. Although the annular reinforcing strips can resist a certain circumferential stress, their ability to disperse axial stress is weak. Under high liquid levels or high pressures, the axial stress of the tank is still concentrated on the tank body, which can easily lead to local deformation or instability of the tank body. Therefore, an internal reinforcement structure for FRP storage tanks is proposed to address the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide an internal reinforcement structure for a fiberglass storage tank to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An internal reinforcement structure for a fiberglass storage tank includes a tank body. The inner wall of the tank body is provided with a first reinforcement component, and the inner cavity of the tank body is provided with a second reinforcement component. The first reinforcement component includes several annular reinforcing strips arranged longitudinally at equal intervals. The outer diameter of each annular reinforcing strip matches the inner diameter of the tank body. A spiral reinforcing rib is provided between adjacent annular reinforcing strips. The outer diameter of each spiral reinforcing rib matches the inner diameter of the tank body, and the height of each spiral reinforcing rib is consistent with the spacing between adjacent annular reinforcing strips. The second reinforcement component includes a central support column. Several receiving grooves are arranged at equal intervals on the outer side of the central support column. Radial reinforcing ribs are provided within the inner cavity of each receiving groove. The bottom end of each radial reinforcing rib is hinged to the receiving groove via a hinge shaft. A limiting structure is provided above each receiving groove. A positioning structure is provided between the radial reinforcing ribs and the annular reinforcing strips. The outer walls of both the annular reinforcing strips and the spiral reinforcing ribs are fixedly bonded to the inner wall of the tank body using resin adhesive. The upper and lower ends of the central support column are fixedly bonded to the center of the inner top and the center of the inner bottom of the tank body, respectively, using resin adhesive.

[0005] As a further optimization of this utility model, the receiving groove is matched with the specifications of the radial reinforcing rib, and the length of the radial reinforcing rib is matched with the spacing between the central support column and the annular reinforcing strip.

[0006] As a further optimization of this utility model, the limiting structure includes an external thread disposed on the outside of the receiving groove, the external thread extending from the top of the outside of the receiving groove to the top of the receiving groove.

[0007] As a further optimization of this utility model, the outer side of the central support column is provided with a limiting ring sleeve, the inner wall of the limiting ring sleeve is provided with an internal thread, and the limiting ring sleeve is threadedly connected to the external thread through the internal thread.

[0008] As a further optimization of this utility model, the positioning structure includes a positioning groove formed on the inner side of the top of the annular reinforcing strip. The positioning groove matches the end specifications of the radial reinforcing rib. The inner sidewall of the positioning groove is symmetrical and fixedly connected with a rubber clip.

[0009] As a further optimization of this utility model, the radial reinforcing ribs are provided with symmetrical positioning slots on both sides of their ends, and the positioning slots and rubber blocks are positioned correspondingly and matched in specifications.

[0010] As a further optimization of this utility model, the rubber block has an internal hollow structure, and a return spring is provided in the inner cavity of the rubber block. The two ends of the return spring are fixedly connected to the inner end face of the rubber block.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the tank body provides storage space, the first reinforcing component provides good circumferential strength and the ability to disperse circumferential stress, thereby reducing local stress concentration, and also increases the rigidity of the inner wall of the tank, improving the deformation resistance of the tank. The second reinforcing component can bear part of the weight of the top of the tank, reduce the pressure on the side wall, prevent vertical deformation, and evenly distribute the internal pressure to the side wall, reducing local stress concentration, enhancing the horizontal stability of the tank, and preventing lateral deformation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the tank body of this utility model; Figure 3 This is a schematic diagram of the structure of the novel spiral reinforcing rib. Figure 4 This is a cross-sectional view of the tank body without spiral reinforcing ribs according to this utility model; Figure 5 This is a schematic diagram of the structure of the central support column and the annular reinforcing strip of this utility model. Figure 1 ; Figure 6 This is a schematic diagram of the structure of the central support column and the annular reinforcing strip of this utility model. Figure 2 ; Figure 7 This is a schematic diagram of the limiting structure of this utility model; Figure 8 This is a schematic diagram of the structure of the present invention in its radial reinforcing rib retracted state; Figure 9 This utility model Figure 6 Enlarged view of point A; Figure 10 This is a cross-sectional view of the rubber card block of this utility model.

[0013] In the diagram: 1. Tank body; 2. First reinforcing component; 21. Annular reinforcing strip; 22. Spiral reinforcing rib; 3. Second reinforcing component; 31. Central support column; 32. Receiving groove; 33. Radial reinforcing rib; 34. Limiting structure; 341. External thread; 342. Limiting ring; 343. Internal thread; 35. Positioning structure; 351. Positioning groove; 352. Rubber block; 353. Positioning slot; 354. Return spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-10 This utility model provides a technical solution: An internal reinforcement structure for a fiberglass storage tank includes a tank body 1. The inner wall of the tank body 1 is provided with a first reinforcing component 2, and the inner cavity of the tank body 1 is provided with a second reinforcing component 3. The first reinforcing component 2 includes several annular reinforcing strips 21, which are arranged longitudinally at equal intervals. The outer diameter of each annular reinforcing strip 21 matches the inner diameter of the tank body 1. A spiral reinforcing rib 22 is provided between adjacent annular reinforcing strips 21. The outer diameter of each spiral reinforcing rib 22 matches the inner diameter of the tank body 1, and the height of each spiral reinforcing rib 22 is consistent with the spacing between adjacent annular reinforcing strips 21. The second reinforcing component 3 includes a central support. The central support column 31 has several equidistant grooves 32 arranged on its outer side. The inner cavity of the groove 32 is provided with radial reinforcing ribs 33. The bottom end of the radial reinforcing ribs 33 is hinged to the groove 32 through a hinge shaft. A limiting structure 34 is provided above the groove 32. A positioning structure 35 is provided between the radial reinforcing ribs 33 and the annular reinforcing strip 21. The outer walls of the annular reinforcing strip 21 and the spiral reinforcing rib 22 are fixedly bonded to the inner wall of the tank 1 by resin adhesive. The upper and lower ends of the central support column 31 are fixedly bonded to the center of the inner top and the center of the inner bottom of the tank 1 by resin adhesive, respectively.

[0017] As a further implementation of this solution, the specifications of the receiving groove 32 and the radial reinforcing rib 33 are matched, and the length of the radial reinforcing rib 33 is matched with the spacing between the central support column 31 and the annular reinforcing strip 21. This arrangement can ensure that the radial reinforcing rib 33 can be smoothly stored in the receiving groove 32 when not installed, and can be smoothly connected to the annular reinforcing strip 21 when installed.

[0018] As a further implementation of this solution, the limiting structure 34 includes an external thread 341 located on the outside of the receiving groove 32. The external thread 341 extends from the top of the outside of the receiving groove 32 to the top of the receiving groove 32. A limiting ring 342 is sleeved on the outside of the central support column 31. An internal thread 343 is provided on the inner wall of the limiting ring 342. The limiting ring 342 is threadedly connected to the external thread 341 through the internal thread 343. Through the threaded connection between the external thread 341 and the internal thread 343 of the limiting ring 342, the radial reinforcing rib 33 can be easily limited and released. Before installation, it can effectively prevent the radial reinforcing rib 33 from protruding from the receiving groove 32. At the same time, this limiting method has a simple structure, is easy to operate, and has high reliability.

[0019] As a further implementation of this solution, the positioning structure 35 includes a positioning groove 351 opened on the inner side of the top of the annular reinforcing strip 21. The positioning groove 351 matches the end specifications of the radial reinforcing rib 33. The inner sidewall of the positioning groove 351 is symmetrical and fixedly connected with a rubber block 352. The positioning groove 351 matches the end specifications of the radial reinforcing rib 33, which can accurately position the radial reinforcing rib 33 and ensure the connection accuracy between the radial reinforcing rib 33 and the annular reinforcing strip 21.

[0020] As a further implementation of this solution, symmetrical positioning slots 353 are provided on both sides of the end of the radial reinforcing rib 33. The positioning slots 353 and the rubber block 352 are positioned correspondingly and matched in specifications. The rubber block 352 has an internal hollow structure and a return spring 354 is provided in the inner cavity of the rubber block 352. The two ends of the return spring 354 are fixedly connected to the inner end face of the rubber block 352. The setting of the rubber block 352 and the return spring 354 can form a stable snap-fit ​​relationship when the radial reinforcing rib 33 is inserted into the positioning slot 351, preventing positional deviation between the radial reinforcing rib 33 and the positioning slot 351, thereby ensuring the smooth curing of the subsequent resin adhesive and further enhancing the connection strength and reliability between the radial reinforcing rib 33 and the annular reinforcing strip 21.

[0021] Workflow: Tank 1 provides storage space. The first reinforcing component 2 provides good circumferential strength and the ability to disperse circumferential stress. The annular reinforcing strip 21 enhances the circumferential strength of tank 1, effectively resisting the circumferential stress on the tank wall from the internal liquid, improving the tank 1's resistance to circumferential deformation, and preventing expansion deformation of tank 1 in the circumferential direction. The spiral reinforcing rib 22 effectively decomposes and transfers the axial and circumferential stress on the inner wall of tank 1. When tank 1 is subjected to internal pressure, the spiral reinforcing rib 22 can transfer the circumferential stress along the spiral direction to other parts of tank 1, thereby reducing local stress concentration. At the same time, the spiral reinforcing rib 22 can also increase the rigidity of the inner wall of tank 1, improving the tank 1's resistance to deformation. The central support in the second reinforcing component 3 can bear part of the weight of the top of the tank 1 to reduce side wall pressure, prevent vertical deformation, and evenly distribute internal pressure to the side walls through radial reinforcing ribs 33, reducing local stress concentration, enhancing the horizontal stability of the tank 1, and preventing lateral deformation. The radial reinforcing ribs 33 are integrated into the central support column 31, so they can be stored in the central support column 31 when not in use, reducing space occupation and the possibility of damage. Before installation, the radial reinforcing ribs 33 are stored in the receiving groove 32 and limited by the limiting structure 34 to prevent them from protruding from the receiving groove 32. Before installation, the limiting ring 342 is connected by the internal thread 343 and the external thread 341. The radial reinforcing rib 33 is then limited by the blocking effect of the limiting ring 342, as it rotates to the top of the outer side of the receiving groove 32. It is worth noting that although the outer thread 341 of the receiving groove 32 is interrupted to ensure the normal opening and closing of the radial reinforcing rib 33, this does not affect the threaded connection of the limiting ring 342. During installation, the limiting ring 342 is rotated upwards through the engagement of the inner thread 343 and the outer thread 341, rotating it to the top of the outer thread 341. At this point, the limiting ring 342 is above the receiving groove 32, thus eliminating its limitation on the radial reinforcing rib 33. Then, the radial reinforcing rib 33 is rotated out through the hinge shaft, and resin adhesive is applied to the end of the radial reinforcing rib 33. When the radial reinforcing rib 33 is fully extended, its end corresponds to the positioning groove 351 of the positioning structure 35. The end of the radial reinforcing rib 33 inserts into the positioning groove 351 and compresses the rubber block 352. The rubber block 352 contracts and deforms under compression, causing the return spring 354 to contract under pressure. When the radial reinforcing rib 33 is fully inserted into the positioning groove 351, the positioning groove 353 corresponds to the rubber block 352. At this time, the compressive force of the radial reinforcing rib 33 on the rubber block 352 disappears, and the return spring 354 will drive the rubber block 352 to return to its original position through its own rebound force, so that the rubber block 352 is tightly locked in the positioning groove 353. At this time, a stable locking relationship is formed between the radial reinforcing rib 33 and the positioning groove 351.To prevent positional deviation between the radial reinforcing ribs 33 and the positioning grooves 351, ensuring smooth curing of the subsequent resin adhesive, the radial reinforcing ribs 33 can evenly distribute the internal pressure of the tank 1 onto the tank wall, reducing local stress concentration and improving the pressure resistance of the tank 1. Furthermore, the radial reinforcing ribs 33 also enhance the horizontal stability of the tank 1, preventing lateral deformation.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internal reinforcing structure for a fiberglass storage tank, comprising a tank body (1), characterized in that: The inner wall of the tank (1) is provided with a first reinforcing component (2), and the inner cavity of the tank (1) is provided with a second reinforcing component (3). The first reinforcing component (2) includes several annular reinforcing strips (21), which are arranged longitudinally at equal intervals. The outer diameter of the annular reinforcing strips (21) matches the inner diameter of the tank body (1). A spiral reinforcing rib (22) is provided between adjacent annular reinforcing strips (21). The outer diameter of the spiral reinforcing rib (22) matches the inner diameter of the tank body (1), and the height of the spiral reinforcing rib (22) is consistent with the spacing between adjacent annular reinforcing strips (21). The second reinforcing component (3) includes a central support column (31), and a plurality of receiving grooves (32) are arranged at equal intervals on the outer side of the central support column (31). The inner cavity of the receiving groove (32) is provided with radial reinforcing ribs (33). The bottom end of the radial reinforcing ribs (33) is hinged to the receiving groove (32) through a hinge shaft. A limiting structure (34) is provided above the receiving groove (32). A positioning structure (35) is provided between the radial reinforcing ribs (33) and the annular reinforcing strip (21). The outer walls of the annular reinforcing strip (21) and the spiral reinforcing rib (22) are fixedly bonded to the inner wall of the tank (1) by resin adhesive. The upper and lower ends of the central support column (31) are fixedly bonded to the center of the inner top and the center of the inner bottom of the tank (1) by resin adhesive, respectively.

2. The internal reinforcement structure of a fiberglass storage tank according to claim 1, characterized in that: The receiving groove (32) is matched with the specifications of the radial reinforcing rib (33), and the length of the radial reinforcing rib (33) is matched with the spacing between the central support column (31) and the annular reinforcing strip (21).

3. The internal reinforcement structure of a fiberglass storage tank according to claim 1, characterized in that: The limiting structure (34) includes an external thread (341) disposed on the outside of the receiving groove (32), the external thread (341) extending from the top of the outside of the receiving groove (32) to the top of the receiving groove (32).

4. The internal reinforcement structure of a fiberglass storage tank according to claim 3, characterized in that: The outer side of the central support column (31) is fitted with a limiting ring (342), and the inner wall of the limiting ring (342) is provided with an internal thread (343). The limiting ring (342) is threadedly connected to the external thread (341) through the internal thread (343).

5. The internal reinforcement structure of a fiberglass storage tank according to claim 1, characterized in that: The positioning structure (35) includes a positioning groove (351) opened on the inner side of the top of the annular reinforcing strip (21). The positioning groove (351) matches the end specifications of the radial reinforcing rib (33). The inner sidewall of the positioning groove (351) is symmetrical and fixedly connected with a rubber block (352).

6. The internal reinforcement structure of a fiberglass storage tank according to claim 5, characterized in that: The radial reinforcing rib (33) has symmetrically provided positioning slots (353) on both sides of its end. The positioning slots (353) and the rubber block (352) are positioned correspondingly and matched in specifications.

7. The internal reinforcement structure of a fiberglass storage tank according to claim 5, characterized in that: The rubber block (352) has a hollow internal structure. The inner cavity of the rubber block (352) is provided with a return spring (354). The two ends of the return spring (354) are fixedly connected to the inner end face of the rubber block (352).

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