Anti-corrosion concrete foundation for storage tank

Abstract

The utility model relates to a storage tank foundation, in particular to an anti-corrosion concrete foundation for a storage tank, which comprises an anti-corrosion mould, a concrete filling layer and a steel support structure, a sealed inner cavity is formed in the anti-corrosion mold, the steel supporting structure is arranged along the inner wall face of the anti-corrosion mold, and the inner cavity is filled with the concrete filling layer. Compared with the prior art, the problems that in the prior art, due to the fact that a round storage tank foundation needs to be manually erected on site, the process is complex, formwork erecting is difficult, meanwhile, the corrosion resistance needs to be achieved by doping or coating anti-corrosion materials, and the concrete performance is affected are solved. According to the scheme, the PVC anti-corrosion mold is introduced, so that the prefabricated mold can be directly used on site, the exterior of the mold is resistant to corrosion, and the influence on concrete is reduced.

Description

Technical Field

[0001] The utility model relates to a storage tank foundation, in particular to an anti-corrosion concrete foundation for a storage tank. Background Art

[0002] PVC material has the advantages of light weight, low price, high strength, good geometric stability, good corrosion resistance and good plasticity. It is widely used in construction, electronics, industry, automobile and other fields, and the scope of application will become wider and wider.

[0003] As the most widely used civil engineering material, traditional concrete still has inherent defects such as low tensile strength, easy cracking, and poor corrosion resistance. With the continuous improvement of engineering quality requirements, these shortcomings have increasingly restricted the performance of materials, thereby reducing the reliability and durability of the structure and causing serious economic losses. Basalt fiber, which has the advantages of high cost performance, large elastic modulus, high tensile strength, high temperature resistance, and corrosion resistance, is added to the cement matrix to make basalt fiber concrete, which can effectively control the cracking of the concrete matrix, enhance the tensile strength of concrete, and improve the comprehensive performance of concrete, extending the service life of components.

[0004] In the industrial field, most commonly used storage tanks adopt a cylindrical structure, and the corresponding tank foundations are often circular in cross-section. In addition, the liquids stored in most chemical tanks are corrosive to a certain extent. If leakage occurs, it will cause erosion to the tank foundation. At present, the conventional practice for circular tank foundation formwork is that on-site workers bend the formwork into a circle and use relevant measures to fix the formwork to prevent its deformation, resulting in high costs for on-site manual formwork and demoulding, and a long on-site construction period. At the same time, the conventional practice for foundation anti-corrosion is to apply relevant anti-corrosion materials on the foundation surface in layers or add anti-corrosion materials to the foundation concrete. It is necessary to accurately control the degree of mixing uniformity to ensure the uniformity of the anti-corrosion effect. In addition, the added anti-corrosion materials cannot destroy or change the performance indicators of the concrete. The various restrictions mentioned above make it impossible for the existing conventional tank foundation to achieve the optimal performance state.

[0005] Based on this, it is necessary to propose a corrosion-resistant concrete foundation for storage tanks to simplify construction and reduce costs, while also having good corrosion resistance. Utility Model Content

[0006] The purpose of the utility model is to provide a corrosion-resistant concrete foundation for a storage tank in order to solve at least one of the above problems, so as to solve the problem that the circular storage tank foundation in the prior art needs to be manually supported on site, which is complicated and difficult to support, and the corrosion resistance needs to be achieved by adding or coating anti-corrosion materials, which affects the performance of concrete. This solution introduces PVC corrosion-resistant molds to achieve direct use of prefabricated molds on site, and the external corrosion resistance of the mold is constructed to reduce the impact on the concrete itself.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] A corrosion-resistant concrete foundation for a storage tank, comprising a corrosion-resistant mold, a concrete filling layer and a steel support structure;

[0009] The interior of the anti-corrosion mold is a sealed inner cavity, the steel support structure is arranged along the inner wall surface of the anti-corrosion mold, and the concrete filling layer is filled in the inner cavity.

[0010] Preferably, the anti-corrosion mold is a hollow cylindrical structure.

[0011] Preferably, the anti-corrosion mold comprises an upper cover and a coverless cylinder, and the upper cover and the coverless cylinder are snap-fitted together.

[0012] Preferably, the coverless cylinder is provided with a slot on the outer surface 1-2 mm away from the top opening for snap-fitting with the upper cover.

[0013] Preferably, a sealing material layer is provided in the card slot, and the sealing material layer can usually be formed by applying a sealant to further improve the sealing performance and effect of the interface.

[0014] Preferably, the thickness of the anti-corrosion mold is 5 mm-20 mm, and the corresponding thickness needs to be selected according to the size of the specific foundation to ensure the structural strength of the mold.

[0015] Preferably, the material of the corrosion-resistant mold is PVC.

[0016] Preferably, the steel support structure is arranged in the inner cavity and is arranged in contact with the inner wall surface, the inner top surface and the inner bottom surface.

[0017] Preferably, the steel support structure is a steel cage.

[0018] Preferably, the material of the concrete filling layer is basalt fiber concrete.

[0019] Preferably, the concrete filling layer completely fills the inner cavity of the corrosion-resistant mold.

[0020] The working principle of the utility model is:

[0021] According to the tank foundation size required by the structural calculation, a circular PVC uncovered mold (coverless cylinder) and a corresponding cover mold (cover) of corresponding specifications are customized in the factory. A slot is reserved on the outside of the uncovered cylinder 1 to 2 mm away from the upper opening to cooperate with the cover to form a sealed cavity; a steel cage (steel support structure) is placed in the corrosion-resistant mold, and basalt fiber chopped yarn is scattered and sprinkled into the pouring concrete for mixing, and then concrete is poured. After the concrete is cured to form a concrete filling layer, the PVC cover is placed in the reserved slot, and a sealing material (such as sealant) is applied to seal the slot to form a sealed tank foundation.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The plasticity of PVC can greatly reduce the difficulty of on-site circular tank foundation formwork.

[0024] 2. One-time production of PVC molds in the factory can shorten the on-site construction period and reduce the cost of on-site manual formwork and demoulding; the mold is more batch-producible, with high manufacturing efficiency, low cost and high precision.

[0025] 3. Since the liquids in most chemical storage tanks are corrosive, the shell formed by the PVC mold can prevent the concrete foundation from being eroded by the leaking tank liquid and the corrosive environment of the foundation itself, thereby improving the durability and service life of the foundation.

[0026] 4. Adding an appropriate amount of basalt fiber to the concrete of the tank foundation can not only improve the shortcomings of concrete's high brittleness and low tensile strength, but also enhance the compressive strength of the concrete foundation, thereby adapting to the heavier bearing capacity of the tank foundation.

[0027] 5. The outsourced PVC basalt fiber concrete tank foundation is made of the finished product mold. There is no need to excavate the operating surface at the construction site, which also saves construction costs and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the axial structure of the anti-corrosion mold;

[0029] Figure 2 It is a schematic diagram of the side cross-sectional structure of the corrosion-resistant concrete foundation;

[0030] In the figure: 1-anti-corrosion mold; 2-concrete filling layer; 3-steel support structure; 11-upper cover; 12-uncovered cylinder. DETAILED DESCRIPTION

[0031] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] A corrosion resistant concrete foundation for storage tanks, such as Figure 1 , 2 As shown, it includes an anti-corrosion mold 1, a concrete filling layer 2 and a steel support structure 3;

[0034] The interior of the anti-corrosion mold 1 is a sealed inner cavity, the steel support structure 3 is arranged along the inner wall surface of the anti-corrosion mold 1, and the concrete filling layer 2 is filled in the inner cavity.

[0035] More specifically, in this embodiment:

[0036] In current practice:

[0037] The existing conventional method for circular tank foundation formwork is for on-site workers to bend the formwork into a circle and use relevant measures to fix the formwork to prevent its deformation;

[0038] The conventional approach to foundation corrosion protection is to apply relevant anti-corrosion materials in layers on the foundation surface or to mix anti-corrosion materials into the foundation concrete.

[0039] The above process involves high costs for manual formwork and formwork removal, difficulty in supporting the circular tank foundation formwork, and the need for large excavation of the operating surface at the construction site, resulting in high construction costs and low efficiency.

[0040] This solution proposes a corrosion-resistant concrete foundation for a storage tank, which includes a corrosion-resistant mold 1 as a protective shell, a steel support structure 3 is arranged inside the mold and is filled with a concrete filling layer 2 to have sufficient structural strength.

[0041] The anti-corrosion mold 1 is a PVC mold, which is a hollow cylindrical structure with a sealed inner cavity inside. It is composed of an upper cover 11 and a coverless cylinder 12. The coverless cylinder 12 is provided with an annular slot at a position 1-2 mm away from the upper opening on the outside, which can be snap-fitted with the upper cover 11; a sealing material layer (such as a sealant) can be further provided in the slot to improve the sealing performance of the interface. The anti-corrosion mold 1 can be made of prefabricated parts, which can be transported to the construction site after production in the factory, and has the advantages of low cost, high precision, convenient manufacturing, and convenient construction. The sealed inner cavity protects the steel support structure 3 and the concrete filling layer 2 therein, prevents the concrete foundation from being corroded by the corrosive environment, effectively improves the durability and service life of the concrete foundation, and is particularly suitable for use in chemical storage tanks loaded with corrosive liquids.

[0042] The steel support structure 3, which adopts a steel cage, is arranged in the inner cavity and is arranged to fit the inner wall surface, inner top surface and inner bottom surface of the corrosion-resistant mold 1, so as to provide a certain axial tension for the concrete filling layer 2 formed by pouring.

[0043] The concrete filling layer 2 is basalt fiber concrete, which fills the inner cavity of the corrosion-resistant mold 1. After adding an appropriate amount of basalt fiber, it can not only improve the shortcomings of concrete brittleness and low tensile strength, but also enhance the compressive strength of the concrete foundation, thereby adapting to the heavier bearing capacity of the tank foundation.

[0044] When the corrosion-resistant concrete foundation is used: according to the tank foundation size required by the structural calculation, a corrosion-resistant mold 1 of corresponding specifications is customized in the factory, wherein a slot is reserved on the outer side of the uncovered cylinder 12 at a distance of 1 to 2 mm from the upper port, and a sealant is applied in the slot to form a sealing material layer; a steel cage is placed in the inner cavity of the corrosion-resistant mold 1, and then basalt fiber chopped yarns are scattered into the pouring concrete and concrete is poured into the inner cavity, and after the concrete curing is completed, the upper cover 11 is placed in the reserved slot of the uncovered cylinder 12 to form a sealed tank foundation.

[0045] The construction process is convenient as a whole, and there is no need for large excavation of the operating surface at the construction site, which effectively saves construction costs and improves construction efficiency.

[0046] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A corrosion-resistant concrete foundation for a storage tank, characterized in that: It comprises an anti-corrosion mould (1), a concrete filling layer (2) and a steel supporting structure (3); The interior of the corrosion-resistant mold (1) is a sealed inner cavity, the steel support structure (3) is arranged along the inner wall surface of the corrosion-resistant mold (1), and the concrete filling layer (2) is filled in the inner cavity.

2. The corrosion-resistant concrete foundation for a storage tank according to claim 1, characterized in that: The anti-corrosion mold (1) is a hollow cylindrical structure.

3. The corrosion-resistant concrete foundation for a storage tank according to claim 1, characterized in that: The anti-corrosion mold (1) comprises an upper cover (11) and a coverless cylinder (12), and the upper cover (11) and the coverless cylinder (12) are snap-fitted.

4. The corrosion-resistant concrete foundation for a storage tank according to claim 3, characterized in that: The coverless cylinder (12) is provided with a slot on the outer surface 1-2 mm away from the top opening, for engaging with the upper cover (11).

5. The corrosion-resistant concrete foundation for a storage tank according to claim 4, characterized in that: A sealing material layer is arranged in the card slot.

6. The corrosion-resistant concrete foundation for a storage tank according to claim 1, characterized in that: The thickness of the anti-corrosion mold (1) is 5 mm-20 mm.

7. The corrosion-resistant concrete foundation for a storage tank according to claim 1, characterized in that: The material of the corrosion-resistant mold (1) is PVC.

8. The corrosion-resistant concrete foundation for a storage tank according to claim 1, characterized in that: The steel support structure (3) is arranged in the inner cavity and is arranged in contact with the inner wall surface, the inner top surface and the inner bottom surface.

9. The corrosion-resistant concrete foundation for a storage tank according to claim 1, characterized in that: The steel support structure (3) is a steel cage.

10. The corrosion-resistant concrete foundation for a storage tank according to claim 1, characterized in that: The material of the concrete filling layer (2) is basalt fiber concrete.

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