Glass reinforced plastic storage tank with inner liner structure

Abstract

The utility model discloses a glass -fibre reinforced plastic storage tank with lining structure relates to glass -fibre reinforced plastic storage tank technical field, the utility model discloses a glass -fibre reinforced plastic storage tank body, the inner chamber of glass -fibre reinforced plastic storage tank body is provided with lining, and the fixed assembly is threadedly connected between glass -fibre reinforced plastic storage tank body and lining. The utility model discloses a fixed assembly of thread connection is arranged between glass -fibre reinforced plastic storage tank body and lining, and the detachable lining structure is constructed, when the wear -resistant coating, high -temperature resistant coating or corrosion -resistant coating of lining appears local damage such as abrasion, corrosion because long -term contact storage medium, do not need to dismount whole storage tank, only need to unscrew fixed ring to separate lining fast, realize individual replacement, and this design avoids the whole replacement or complex repair of storage tank caused by partial damage of traditional integral lining, and the maintenance cost and time cost are reduced greatly, simultaneously, the sealing property and stability of lining installation are ensured to the thread connection structure.

Description

Technical Field

[0001] This utility model belongs to the field of fiberglass storage tank technology, and in particular relates to a fiberglass storage tank with an internal lining structure. Background Technology

[0002] In numerous industrial sectors such as chemical, environmental protection, petroleum, and food processing, fiberglass storage tanks have been widely used due to their excellent properties, including corrosion resistance, high strength, and light weight. As key equipment for storing various liquid or gaseous media, their internal lining structure directly contacts the stored medium, playing a crucial role in the tank's sealing performance, corrosion resistance, and overall service life.

[0003] Traditional fiberglass storage tank linings mostly employ an integral design. Once the lining suffers wear, corrosion, or other damage, the entire tank often needs to be disassembled, repaired, or replaced. This is not only costly but also time-consuming and labor-intensive, severely impacting the tank's operational efficiency. Furthermore, some existing lining structures are relatively simple in design, relying solely on the properties of the lining material, epoxy resin, for corrosion resistance. However, ordinary epoxy resin can only withstand low-concentration, room-temperature corrosion from general chemical media. With the continuous development of industrial production and the increasing variety of stored media, higher demands are being placed on the corrosion resistance, wear resistance, and aging resistance of storage tank linings.

[0004] To address these issues, we provide a fiberglass storage tank with an internal lining structure. Summary of the Invention

[0005] The purpose of this utility model is to provide a fiberglass storage tank with an inner lining structure, which solves the problems of inconvenient replacement of the inner lining and limited protective function in the prior art through the cooperation of the fixing components and the inner lining.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a fiberglass storage tank with an inner lining structure, comprising a fiberglass storage tank body, an inner lining provided in the inner cavity of the fiberglass storage tank body, a fixing component threadedly connecting the fiberglass storage tank body and the inner lining, the inner lining comprising a base material layer, the surface of the base material layer being sprayed with a corrosion-resistant coating, the surface of the corrosion-resistant coating being sprayed with a high-temperature resistant coating, and the surface of the high-temperature resistant coating being sprayed with a wear-resistant coating, the fixing component comprising a fixing ring threadedly connected between the fiberglass storage tank body and the inner lining, and a sealing ring being bonded to the top of the inner cavity of the fixing ring by an adhesive.

[0008] The present invention is further provided that the surface of the fiberglass tank body and the inner wall of the liner are provided with notches, and the inner wall of the notches is provided with external threads. The notch and external thread design of the tank body and the liner surface provide a standardized threaded connection interface for the fixing components, ensuring the positioning accuracy and connection strength during the installation of the liner.

[0009] The present invention is further configured such that the inner wall of the fixing ring is provided with an internal thread for use with the external thread, the fixing ring is kept on the same horizontal plane as the fiberglass tank body and the inner lining, the cooperation between the internal thread and the external thread of the fixing ring, and the design of keeping the fixing ring on the same horizontal plane as the tank body and the inner lining, make the connection structure flat and stable, avoid turbulence or impurity retention when the medium flows, and enhance the pressure resistance of the overall structure.

[0010] The present invention is further configured such that the bottom of the sealing ring is tightly fitted to the top of the fiberglass storage tank body and the inner lining, and the sealing ring is tightly fitted to the joint surface. The elastic deformation is used to fill the tiny gaps, improve the sealing performance of the connection part, and prevent the leakage of the medium and the intrusion of external impurities.

[0011] The present invention is further configured such that the substrate layer is made of epoxy resin.

[0012] The present invention is further configured such that the corrosion-resistant coating is formed by spraying vinyl ester resin, the substrate layer is made of epoxy resin and the corrosion-resistant coating is made of vinyl ester resin, so as to give full play to the advantages of strong adhesion and chemical corrosion resistance of both, and ensure the stability of the inner lining base structure and the core protective layer.

[0013] The present invention is further configured such that the high-temperature resistant coating is formed by spraying an organic silicone resin film. The use of organic silicone resin in the high-temperature resistant coating gives the lining structural stability in a high-temperature environment and broadens the applicable temperature range of the storage tank.

[0014] The present invention is further configured such that the wear-resistant coating includes a glass flake coating, and the surface of the glass flake coating is sprayed with a polytetrafluoroethylene coating. The glass flake coating and the polytetrafluoroethylene coating in the wear-resistant coating are combined to take into account wear resistance, impermeability and super corrosion resistance, and meet the storage requirements of solid particles or highly corrosive media.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model constructs a detachable liner structure by setting a threaded connection fixing component between the FRP storage tank body and the liner. When the wear-resistant coating, high-temperature resistant coating, or corrosion-resistant coating of the liner suffers local damage such as wear or corrosion due to long-term contact with the stored medium, it is not necessary to disassemble the entire storage tank. The liner can be quickly separated by simply loosening the fixing ring, allowing for individual replacement. This design avoids the need for complete tank replacement or complex repair due to local damage in traditional integral liners, significantly reducing maintenance and time costs. At the same time, the threaded connection structure ensures the sealing and stability of the liner installation. The sealing ring at the top of the fixing ring's inner cavity tightly fits the mating surface between the storage tank body and the liner, effectively preventing medium leakage and improving the reliability and safety of the storage tank during long-term use. It is especially suitable for fields such as chemical and environmental protection where high equipment maintenance efficiency is required.

[0017] 2. The lining of this utility model adopts a multi-layer composite structure of "substrate layer + corrosion-resistant coating + high-temperature resistant coating + wear-resistant coating". The materials of each layer work together to cope with complex working conditions. The substrate layer is made of epoxy resin, which provides a stable support foundation for the entire lining by utilizing its excellent adhesion and mechanical strength. The corrosion-resistant coating is made of vinyl ester resin, which can effectively resist the erosion of strong corrosive media such as acids, alkalis, salts and chlorine-containing media, and is suitable for storing complex media such as chemical raw materials and sewage. The high-temperature resistant coating is made of silicone resin, which enables the lining to maintain structural stability in high-temperature environments and avoids cracking or peeling of the coating due to temperature fluctuations. The wear-resistant coating includes a glass flake coating and a polytetrafluoroethylene coating. The former enhances the anti-permeability and wear resistance through the "maze effect", while the latter, with its super corrosion resistance and low coefficient of friction, further enhances the lining's resistance to erosion and wear from media containing solid particles. The multi-layer composite structure significantly extends the service life of the lining and meets the multiple requirements of industrial production for the corrosion resistance, high-temperature resistance and wear resistance of storage tank linings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of a fiberglass storage tank with an internal lining structure.

[0020] Figure 2 This is a cross-sectional schematic diagram of a fiberglass storage tank with an internal lining structure.

[0021] Figure 3 This is an explosion diagram of a fiberglass storage tank with an internal lining structure.

[0022] Figure 4 This is a schematic diagram of the internal connection structure of the inner lining layer in a fiberglass storage tank with an inner lining structure.

[0023] Figure 5 This is a schematic diagram of the internal connection structure of the wear-resistant coating in a fiberglass storage tank with an inner lining.

[0024] In the attached diagram: 1. Fiberglass tank body; 2. Lining; 21. Substrate layer; 22. Corrosion-resistant coating; 23. High-temperature resistant coating; 24. Wear-resistant coating; 241. Glass flake coating; 242. Polytetrafluoroethylene coating; 3. Fixing components; 31. Fixing ring; 32. Sealing ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0026] Please see Figure 1-5 This utility model is a fiberglass storage tank with an inner lining structure, including a fiberglass storage tank body 1, an inner lining 2 provided in the inner cavity of the fiberglass storage tank body 1, a fixing component 3 threadedly connected between the fiberglass storage tank body 1 and the inner lining 2, the inner lining 2 including a base material layer 21, the surface of the base material layer 21 being sprayed with a corrosion-resistant coating 22, the surface of the corrosion-resistant coating 22 being sprayed with a high-temperature resistant coating 23, and the surface of the high-temperature resistant coating 23 being sprayed with a wear-resistant coating 24, the fixing component 3 including a fixing ring 31 threadedly connected between the fiberglass storage tank body 1 and the inner lining 2, and a sealing ring 32 bonded to the top of the inner cavity of the fixing ring 31 by an adhesive.

[0027] Specifically: The fiberglass storage tank body 1 and the inner liner 2 are detachably and sealed together by a threaded fixing component 3. Specifically, the inner liner 2 includes a base material layer 21 for basic support, the surface of which is sequentially sprayed with a corrosion-resistant coating 22, a high-temperature resistant coating 23, and a wear-resistant coating 24 with complementary functions: the base material layer 21 is made of epoxy resin, forming a dense base structure to enhance the bonding force between the inner liner 2 and the storage tank body; the corrosion-resistant coating 22 is a vinyl ester resin sprayed into a film, uniformly covering the surface of the base material layer 21, constructing a core protective layer against chemical corrosion; the high-temperature resistant coating 23 is made of silicone resin, forming a high-temperature barrier on the outside of the corrosion-resistant coating 22 to resist the effects of high temperature of the stored medium or changes in ambient temperature; the wear-resistant coating 24 includes a glass flake coating 241 and a polytetrafluoroethylene coating 242 on the surface, the former improving the resistance to media penetration and wear resistance through the layered arrangement of flakes, and the latter further strengthening the surface's wear resistance and corrosion resistance. Example

[0028] Please see Figure 1-5Based on Embodiment 1, the surface of the fiberglass tank body 1 and the inner wall of the liner 2 are provided with notches, and the inner wall of the notches is provided with external threads. The inner wall of the fixing ring 31 is provided with internal threads that cooperate with the external threads. The fixing ring 31 is kept at the same horizontal plane as the fiberglass tank body 1 and the liner 2. The bottom of the sealing ring 32 is tightly attached to the top of the fiberglass tank body 1 and the liner 2. The substrate layer 21 is made of epoxy resin, the corrosion-resistant coating 22 is made of vinyl ester resin sprayed into a film, the high-temperature resistant coating 23 is made of silicone resin sprayed into a film, and the wear-resistant coating 24 includes a glass flake coating 241, the surface of which is sprayed with a polytetrafluoroethylene coating 242.

[0029] Specifically: the recessed and externally threaded design on the surfaces of the tank body and the inner liner 2 provides a standardized threaded connection interface for the fixing component 3, ensuring the positioning accuracy and connection strength during the installation of the inner liner 2. The fit between the internal and external threads of the fixing ring 31, and the design that keeps the fixing ring 31, the tank body, and the inner liner 2 on the same horizontal plane, make the connection structure flat and stable, preventing turbulence or impurity retention during media flow, while also enhancing the overall structure's pressure resistance. The sealing ring 32 fits tightly against the mating surface, using elastic deformation to fill minute gaps, improving the sealing performance of the connection and preventing the media from entering the tank. To prevent leakage and intrusion of external impurities, the substrate layer 21 is made of epoxy resin and the corrosion-resistant coating 22 is made of vinyl ester resin. The strong adhesion and chemical corrosion resistance of both materials ensure the stability of the basic structure and core protective layer of the liner 2. The high-temperature resistant coating 23 is made of silicone resin, which gives the liner 2 structural stability in high-temperature environments and broadens the applicable temperature range of the storage tank. The wear-resistant coating 24 combines the glass flake coating 241 and the polytetrafluoroethylene coating 242, taking into account wear resistance, impermeability and super corrosion resistance, and adapting to the storage needs of solid particles or highly corrosive media.

[0030] The working principle of this utility model is as follows: The inner liner 2 is aligned with the inner cavity of the fiberglass storage tank body 1. The external thread of the recess on the surface of the storage tank body and the inner liner 2 is screwed into the internal thread of the fixing ring 31, so that the fixing ring 31 tightly connects the two. At the same time, the sealing ring 32 inside the fixing ring 31 is compressed and deformed, filling the gap of the mating surface and forming a sealing structure. The substrate layer 21 provides mechanical support and basic adhesion. The corrosion-resistant coating 22 resists the erosion of chemical media. The high-temperature resistant coating 23 withstands temperature changes. The wear-resistant coating 24 resists particle erosion and wear. The four-layer structure works together to protect the storage tank body. When the inner liner 2 is partially damaged, the inner liner 2 can be removed by loosening the fixing ring 31 and replaced with a new inner liner 2 without disassembling the storage tank body, realizing quick maintenance. The sealing ring 32 forms a dynamic seal under the mechanical pressure of the fixing component 3, continuously blocking the medium from the external environment and ensuring the sealing performance and safety of the storage tank during long-term use.

[0031] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A glass steel storage tank having a lining structure, comprising a glass steel storage tank body (1), characterized in that: The inner cavity of the fiberglass storage tank body (1) is provided with an inner liner (2), and a fixing component (3) is threadedly connected between the fiberglass storage tank body (1) and the inner liner (2). The liner (2) includes a substrate layer (21), the surface of which is coated with a corrosion-resistant coating (22), the surface of which is coated with a high-temperature resistant coating (23), and the surface of which is coated with a wear-resistant coating (24). The fixing component (3) includes a fixing ring (31) threaded between the fiberglass tank body (1) and the inner liner (2), and a sealing ring (32) is bonded to the top of the inner cavity of the fixing ring (31) by an adhesive.

2. A glass reinforced plastic tank having a liner structure according to claim 1, characterized in that: The surface of the fiberglass storage tank body (1) and the inner wall of the lining (2) are provided with notches, and the inner wall of the notches is provided with external threads.

3. A glass reinforced plastic tank having an inner liner according to claim 2, characterised in that: The inner wall of the fixing ring (31) is provided with an internal thread for use with the external thread, and the fixing ring (31) is kept on the same horizontal plane as the fiberglass tank body (1) and the inner lining (2).

4. The glass reinforced plastic storage tank having a liner structure according to claim 1, characterized in that: The bottom of the sealing ring (32) is tightly fitted to the top of the fiberglass tank body (1) and the inner lining (2).

5. The glass reinforced plastic storage tank having a liner structure according to claim 1, characterized in that: The substrate layer (21) is made of epoxy resin.

6. A glass reinforced plastic tank having a liner structure according to claim 1, characterized in that: The corrosion-resistant coating (22) is formed by spraying vinyl ester resin.

7. The glass reinforced plastic storage tank having a liner structure according to claim 1, characterized in that: The high-temperature resistant coating (23) is formed by spraying an organosilicon resin film.

8. The glass reinforced plastic storage tank having a liner structure according to claim 1, characterized in that: The wear-resistant coating (24) includes a glass flake coating (241), the surface of which is coated with a polytetrafluoroethylene coating (242).

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