Honeycomb protection device for liquefied hydrocarbon spherical tank and design method thereof

Abstract

The invention relates to the technical field of spherical tank protection, in particular to a honeycomb protection device for a liquefied hydrocarbon spherical tank and a design method thereof.The protection device comprises a tank body protection cover used for protecting the tank body, and the tank body protection cover comprises an inner protection layer and an outer protection layer arranged on the inner protection layer; the inner protective layer comprises a plurality of honeycomb protective layers, and honeycomb cells of at least one honeycomb protective layer are filled with foamed aluminum. According to the protective device, the tank body is protected by adopting the tank body protective cover, in the practical application, the safety of the spherical tank can be effectively guaranteed, splashing objects are prevented from directly impacting the spherical tank, the spherical tank is prevented from being damaged, and the protective device has the advantages of being easy and convenient to operate, simple in structure, high in safety and capable of saving cost.

Description

Technical Field

[0001] The present invention relates to the technical field of spherical tank protection, and particularly relates to a honeycomb protection device for a liquefied hydrocarbon spherical tank and a design method thereof. Background Art

[0002] As a thin-shell structure, the liquefied hydrocarbon spherical tank has many advantages such as large capacity, low cost, and good stability, so it is widely used in petrochemical enterprises and chemical industrial parks. However, under the action of a combustible vapor cloud explosion or the impact of flying objects, the thin-walled steel storage tank is extremely prone to large plastic deformation or penetration damage, which may lead to the leakage of internal combustible substances and cause secondary explosions and even a chain domino effect.

[0003] At present, existing relevant domestic and foreign standards and specifications have not proposed effective measures for the anti-explosion and anti-impact protection of the spherical tank body. Therefore, for the protection of the spherical tank, the more common methods usually involve building a masonry wall or setting up a concrete protection plate to place the spherical tank in a safe environment to ensure the safety of the spherical tank. However, these methods are only applicable to some small spherical tanks and are difficult to apply to large-sized and high-back-pressure spherical tanks. Moreover, they have the disadvantages of complex implementation and high cost. Even in some cases where the application site is limited, the above methods cannot be used to protect the spherical tank.

[0004] Therefore, there is an urgent need for a honeycomb protection device for a liquefied hydrocarbon spherical tank and a design method thereof to comprehensively improve the anti-explosion and anti-impact protection performance of the spherical tank. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem of the lack of an effective protection device for the protection of spherical tanks, especially for liquefied hydrocarbon spherical tanks, in the prior art, and to provide a honeycomb protection device for a liquefied hydrocarbon spherical tank and a design method thereof.

[0006] To achieve the above purpose, the first aspect of the present invention provides a honeycomb protection device for a liquefied hydrocarbon spherical tank, which includes:

[0007] A tank body protection cover for protecting the tank body. The tank body protection cover includes an inner protection layer and an outer protection layer provided on the inner protection layer. The inner protection layer includes several layers of honeycomb protection layers, and the inside of the honeycomb cells of at least one of the honeycomb protection layers is filled with aluminum foam.

[0008] Preferably, the inside of the honeycomb cells of each layer of the honeycomb protection layer is filled with aluminum foam. Extending outward along the surface of the tank body, the porosity of the aluminum foam filled in the inside of the honeycomb cells of several layers of the honeycomb protection layers gradually increases.

[0009] Preferably, the porosity of the aluminum foam is 40-80%.

[0010] Preferably, a ceramic layer is further provided between the inner protective layer and the outer protective layer.

[0011] Preferably, the ceramic layer is made of any one of alumina ceramics, silicon carbide ceramics, and boron carbide ceramics, and the Vickers hardness of the ceramic is ≥1500Hv10, the flexural strength is ≥350MPa, and the fracture toughness is ≥4.5MPa·m 1 / 2 .

[0012] Preferably, extending outward along the surface of the tank body, the thickness of the interlayer plate between adjacent honeycomb protective layers gradually decreases.

[0013] Preferably, the inner protective layer includes 2-5 layers of honeycomb protective layers.

[0014] Preferably, the honeycomb protective layer is made of any one of aluminum alloy, carbon steel, and stainless steel.

[0015] Preferably, the length and width of the honeycomb cells of the honeycomb protective layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protective layer is the same.

[0016] Preferably, the outer protective layer is made of hardened case-hardened steel and has a thickness of 2-5mm.

[0017] Preferably, a fireproof layer is provided on the surface of the outer protective layer.

[0018] The second aspect of the present invention provides a design method for a honeycomb protection device for a liquefied hydrocarbon spherical tank, which is applied to the honeycomb protection device for a liquefied hydrocarbon spherical tank. The design method includes:

[0019] Based on the installation location of the liquefied hydrocarbon spherical tank, quantitatively evaluate the risks it faces and obtain the quantitative evaluation results;

[0020] Design a honeycomb protection device for a liquefied hydrocarbon spherical tank according to the quantitative evaluation results.

[0021] Preferably, the quantitative evaluation of the risks it faces specifically includes:

[0022] According to the layout and risk level of the devices around the liquefied hydrocarbon spherical tank and the local meteorological conditions, use the numerical simulation method to quantitatively evaluate the risks it faces.

[0023] Preferably, the design of the honeycomb protection device for a liquefied hydrocarbon spherical tank according to the quantitative evaluation results specifically includes:

[0024] Design a honeycomb protection device for a liquefied hydrocarbon spherical tank according to the maximum value of the impact force of the splashes in the quantitative evaluation results.

[0025] Preferably, a honeycomb protection device for a liquefied hydrocarbon spherical tank is designed according to the maximum impact force of the splashes in the quantitative evaluation results, specifically including:

[0026] The length and / or width of the honeycomb cells of the honeycomb protection layer satisfy:

[0027] y = 1.6667x 3 -10x 2 -1.6667x + 130

[0028] where x is the layer number of the honeycomb protection layer, and y is the length and / or width of the honeycomb cells of the honeycomb protection layer corresponding to the layer number of the honeycomb protection layer, and its unit is mm.

[0029] Preferably, the length and width of the honeycomb cells of the honeycomb protection layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protection layer is the same, and the height is 20 - 40 mm.

[0030] According to the above technical solution, by using the tank protection cover to protect the tank, in actual application, the safety of the spherical tank can be effectively guaranteed, preventing splashes from directly impacting the spherical tank and causing the spherical tank to be damaged, and it has the advantages of simple operation, simple structure, high safety and cost saving.

[0031] At the same time, by setting that the inside of the honeycomb cells of each layer of the honeycomb protection layer is filled with aluminum foam, extending outward along the surface of the tank, the porosity of the aluminum foam filled in the inside of the honeycomb cells of several layers of the honeycomb protection layer increases in turn, and the porosity of the aluminum foam is 40 - 80%, in actual application, the protection performance of the protection device can be further effectively improved, thereby preventing the splashes from causing the tank to be damaged.

[0032] By setting that a ceramic layer is further arranged between the inner protection layer and the outer protection layer, the ceramic layer is made of any one of alumina ceramics, silicon carbide ceramics and boron carbide ceramics, and the Vickers hardness of the ceramic ≥ 1500 Hv10, the flexural strength ≥ 350 MPa and the fracture toughness ≥ 4.5 MPa·m 1 / 2 , in actual application, the overall protection performance of the protection device can be further effectively improved.

[0033] By setting that the inner protection layer includes 2 - 5 layers of honeycomb protection layers, the length and width of the honeycomb cells of the honeycomb protection layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protection layer is the same, and the honeycomb protection layer is made of any one of aluminum alloy, carbon steel and stainless steel, in actual application, while ensuring the protection effect, the cost can be effectively saved.

[0034] By setting that the length and / or width of the honeycomb cells of the honeycomb protection layer satisfy:

[0035] y = 1.6667x 3 -10x 2 -1.6667x + 130

[0036] Wherein, x is the layer number of the honeycomb protective layer, y is the size of the length and / or width of the honeycomb cells of the honeycomb protective layer corresponding to the layer number of the honeycomb protective layer, and its unit is mm; and it is further set that the length and width of the honeycomb cells of the honeycomb protective layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protective layer is the same, and the size of the height is 20 - 40 mm. In actual application, based on the protection requirements of the spherical tank, the structure of the honeycomb protective layer can be quickly designed. Description of the Drawings

[0037] Figure 1 is a schematic structural diagram of the honeycomb protection device for a liquefied hydrocarbon spherical tank in a specific embodiment;

[0038] Figure 2 is Figure 1 a partial enlarged structural diagram of the honeycomb protection device for the liquefied hydrocarbon spherical tank shown in A;

[0039] Figure 3 is a schematic cross-sectional structural diagram of the inner protective layer of the honeycomb protection device for a liquefied hydrocarbon spherical tank in a specific embodiment. Detailed Embodiments

[0040] The following will describe in detail the specific embodiments of the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0041] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating relative importance or implicitly indicating the quantity of the indicated technical features. Thus, unless otherwise stated, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "a plurality" is two or more. The term "comprising" and any variation thereof mean non-exclusive inclusion, and may include one or more other features, units, components and / or their combinations.

[0042] In addition, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] In the first aspect of the present invention, a honeycomb protection device for a liquefied hydrocarbon spherical tank is provided. As Figures 1-3 shown, the honeycomb protection device for the liquefied hydrocarbon spherical tank includes:

[0044] A tank body protection cover for protecting the tank body. The tank body protection cover includes an inner protection layer and an outer protection layer provided on the inner protection layer. The inner protection layer includes several layers of honeycomb protection layers, and the inside of the honeycomb cells of at least one layer of the honeycomb protection layer is filled with aluminum foam.

[0045] According to the above technical solution, by using the tank body protection cover to protect the tank body, in practical applications, the safety of the spherical tank can be effectively guaranteed, preventing flying objects from directly impacting the spherical tank and causing the spherical tank to be damaged. It has the advantages of simple operation, simple structure, high safety and cost savings.

[0046] In the honeycomb protection device for the liquefied hydrocarbon spherical tank of the present invention, preferably, the inner protection layer includes 2 - 5 layers of honeycomb protection layers, preferably 3 - 4 layers, and most preferably 3 layers. The honeycomb protection layer is made of any one of aluminum alloy, carbon steel and stainless steel. Preferably, it is made of Q235 steel in carbon steel. Thus, in practical applications, while ensuring the protection performance of the protection device, the size of the protection device can be within a suitable range, so that it can be better applied to the liquefied hydrocarbon spherical tank.

[0047] In a further preferred embodiment, the length and width of the honeycomb cells of the honeycomb protection layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protection layer is the same. Thus, in practical applications, the protection performance of the inner protection layer can be further effectively improved.

[0048] In the honeycomb protection device for the liquefied hydrocarbon spherical tank of the present invention, preferably, the inside of the honeycomb cells of at least two layers of the honeycomb protection layers is filled with aluminum foam. Extending outward along the surface of the tank body, the porosity of the aluminum foam filled in the honeycomb cells of several layers of the honeycomb protection layers increases in sequence. More preferably, the inside of the honeycomb cells of each layer of the honeycomb protection layer is filled with aluminum foam. Extending outward along the surface of the tank body, the porosity of the aluminum foam filled in the honeycomb cells of several layers of the honeycomb protection layers increases in sequence. The porosity of the aluminum foam can be 40 - 80%, preferably, the porosity of the aluminum foam is 55 - 80%. Thus, the protection performance of the honeycomb protection layer can be further effectively improved.

[0049] In a specific embodiment, as Figure 2 and 3As shown, it extends linearly outward along the surface of the tank body. Preferably, the porosity of the aluminum foam filled inside the honeycomb cells of the third honeycomb protection layer is 55-62%, the porosity of the aluminum foam filled inside the honeycomb cells of the second honeycomb protection layer is 62-70%, and the porosity of the aluminum foam filled inside the honeycomb cells of the first honeycomb protection layer is 70-80%. Most preferably, the porosity of the aluminum foam filled inside the honeycomb cells of the third honeycomb protection layer is 60%, the porosity of the aluminum foam filled inside the honeycomb cells of the second honeycomb protection layer is 65%, and the porosity of the aluminum foam filled inside the honeycomb cells of the first honeycomb protection layer is 75%. Thus, in practical applications, the protection performance of the honeycomb structure can be effectively improved, and further the protection performance of the inner protection layer can be improved, and the size of the protection device can be within a suitable range, so that it can be better applied to the liquefied hydrocarbon spherical tank.

[0050] In the honeycomb protection device for liquefied hydrocarbon spherical tanks according to the present invention, preferably, a ceramic layer is further provided between the inner protection layer and the outer protection layer. Thus, in practical applications, the protection performance of the protection device can be effectively improved by further providing the ceramic layer.

[0051] In a further preferred embodiment, the ceramic layer is made of any one of alumina ceramics, silicon carbide ceramics, and boron carbide ceramics, and the Vickers hardness of the ceramic is ≥1500Hv10, the flexural strength is ≥350MPa, and the fracture toughness is ≥4.5MPa·m 1 / 2 . Thus, in practical applications, the protection performance of the protection device can be further effectively improved, and the size of the protection device can be within a suitable range, so that it can be better applied to the liquefied hydrocarbon spherical tank.

[0052] In the honeycomb protection device for liquefied hydrocarbon spherical tanks according to the present invention, preferably, it extends outward along the surface of the tank body, and the thickness of the interlayer board between adjacent honeycomb protection layers gradually decreases. Thus, in practical applications, the protection performance of the protection device can be further improved, and the size of the protection device can be within a suitable range, so that it can be better applied to the liquefied hydrocarbon spherical tank, and it has the advantage of cost savings.

[0053] In a specific embodiment, such as Figure 2 and 3As shown, the inner protective layer includes three honeycomb protective layers that extend linearly outward along the surface of the tank body. The thickness of the bottom plate of the third honeycomb protective layer is greater than the thickness of the interlayer plate between the third honeycomb protective layer and the second honeycomb protective layer, and the thickness of the interlayer plate between the third honeycomb protective layer and the second honeycomb protective layer is greater than the thickness of the interlayer plate between the second honeycomb protective layer and the first honeycomb protective layer. Specifically, the thickness of the bottom plate of the third honeycomb protective layer is preferably 4.5 - 5.5 mm, and most preferably 5 mm; the thickness of the interlayer plate between the third honeycomb protective layer and the second honeycomb protective layer is preferably 2.5 - 3.5 mm, and most preferably 3 mm; the thickness of the interlayer plate between the second honeycomb protective layer and the first honeycomb protective layer is preferably 1.5 - 2.5 mm, and most preferably 2 mm. Thus, while ensuring the protective performance of the protective device, the size of the protective device is within a suitable range, so that it can be better applied to the liquefied hydrocarbon spherical tank. Among them, since the adjacent honeycomb protective layers are stacked, for the convenience of understanding the thickness of the interlayer plate between the adjacent honeycomb protective layers, it can be understood as the sum of the thicknesses after the bottom plate of the upper honeycomb protective layer and the top plate of the lower honeycomb protective layer are combined into one.

[0054] In the honeycomb protective device for liquefied hydrocarbon spherical tanks of the present invention, preferably, the outer protective layer is made of hardened case-hardened steel. Further preferably, the thickness of the outer protective layer made of hardened case-hardened steel is 2 - 5 mm, and more preferably 3 - 4 mm. Thus, the impact resistance and shock resistance of the protective device can be effectively improved.

[0055] In the honeycomb protective device for liquefied hydrocarbon spherical tanks of the present invention, preferably, a fireproof layer is provided on the surface of the outer protective layer. In actual application, by coating a fireproof coating on the surface of the outer protective layer to form a fireproof layer, the fire resistance limit of the component can be improved and the rapid spread of fire can be blocked. Among them, the fireproof coating can be a thin-type (3 - 10 mm) steel structure fireproof coating or a thick-type (10 - 30 mm) steel structure fireproof coating. Specifically, for spherical tanks with a fire resistance limit requirement of more than 2.5 hours, a thick-type steel structure fireproof coating is used; for spherical tanks with a fire resistance limit requirement of not more than 2.5 hours, a thin-type steel structure fireproof coating is used.

[0056] The second aspect of the present invention also provides a design method for a honeycomb protective device for liquefied hydrocarbon spherical tanks, which is applied to the honeycomb protective device for liquefied hydrocarbon spherical tanks. The design method includes:

[0057] Based on the installation position of the liquefied hydrocarbon spherical tank, quantitatively evaluate the risks it faces and obtain a quantitative evaluation result;

[0058] Design a honeycomb protective device for liquefied hydrocarbon spherical tanks according to the quantitative evaluation result.

[0059] According to the above design method, in the actual application process, by quantitatively evaluating the possible risks faced by the liquefied hydrocarbon spherical tank, and then designing the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the quantitative evaluation results, the design accuracy of the honeycomb protection device for the liquefied hydrocarbon spherical tank can be effectively improved, and the cost can be saved.

[0060] In the design method of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the present invention, preferably, the step of designing the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the quantitative evaluation results specifically includes: designing the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the maximum value of the impact force of the splashes in the quantitative evaluation results. Thus, in actual application, the design accuracy of the honeycomb protection device for the liquefied hydrocarbon spherical tank can be further effectively improved, and the cost can be saved.

[0061] In the design method of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the present invention, preferably, the step of designing the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the maximum value of the impact force of the splashes in the quantitative evaluation results specifically includes:

[0062] making the length and / or width of the honeycomb cells of the honeycomb protection layer satisfy:

[0063] y = 1.6667x 3 -10x 2 -1.6667x + 130

[0064] wherein, x is the layer number of the honeycomb protection layer, and y is the length and / or width of the honeycomb cells of the honeycomb protection layer corresponding to the layer number of the honeycomb protection layer, and its unit is mm.

[0065] In actual application, based on the above formula, the length and / or width of the honeycomb cells of each layer of the inner protection layer can be quickly determined, so as to greatly improve the design speed of the inner protection layer while ensuring the protection effect.

[0066] In a further preferred embodiment, the length and width of the honeycomb cells of the honeycomb protection layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protection layer is the same. In actual application, the protection performance of the honeycomb protection layer can be further improved.

[0067] In a specific embodiment, such as Figure 2 and 3As shown, the length and width of the honeycomb cells of the first honeycomb protection layer are preferably 110 - 130 mm, and the height is preferably 20 - 40 mm; most preferably, both the length and width are 120 mm and the height is 30 mm. The length and width of the honeycomb cells of the second honeycomb protection layer are preferably 90 - 110 mm, and the height is preferably 20 - 40 mm; most preferably, both the length and width are 100 mm and the height is 30 mm. The length and width of the honeycomb cells of the third honeycomb protection layer are preferably 70 - 90 mm, and the height is preferably 20 - 40 mm; most preferably, both the length and width are 80 mm and the height is 30 mm. Thus, in practical applications, the protection performance of the inner protection layer can be greatly improved.

[0068] In some embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank according to the present invention includes:

[0069] A tank body protective cover for protecting the tank body. The tank body protective cover includes an inner protection layer and an outer protection layer provided on the inner protection layer. The inner protection layer includes several layers of honeycomb protection layers, and the inside of the honeycomb cells of at least one of the honeycomb protection layers is filled with aluminum foam.

[0070] In other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank according to the present invention includes:

[0071] A tank body protective cover for protecting the tank body. The tank body protective cover includes an inner protection layer and an outer protection layer provided on the inner protection layer. The inner protection layer includes several layers of honeycomb protection layers, and the inside of the honeycomb cells of at least one of the honeycomb protection layers is filled with aluminum foam; the inside of the honeycomb cells of each layer of the honeycomb protection layer is filled with aluminum foam. Extending outward along the surface of the tank body, the porosity of the aluminum foam filled in the inside of the honeycomb cells of several layers of the honeycomb protection layers increases in sequence; the porosity of the aluminum foam is 40 - 80%.

[0072] In other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank according to the present invention includes:

[0073] A tank body protective cover for protecting the tank body. The tank body protective cover includes an inner protection layer and an outer protection layer provided on the inner protection layer. The inner protection layer includes several layers of honeycomb protection layers, and the inside of the honeycomb cells of at least one of the honeycomb protection layers is filled with aluminum foam; the inside of the honeycomb cells of each layer of the honeycomb protection layer is filled with aluminum foam. Extending outward along the surface of the tank body, the porosity of the aluminum foam filled in the inside of the honeycomb cells of several layers of the honeycomb protection layers increases in sequence; the porosity of the aluminum foam is 40 - 80%; the outer protection layer is made of hardened carbon steel.

[0074] In other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank according to the present invention includes:

[0075] The tank body protective cover is used to protect the tank body. The tank body protective cover includes an inner protective layer and an outer protective layer provided on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers. The interior of the honeycomb cells of at least one of the honeycomb protective layers is filled with aluminum foam; the interior of the honeycomb cells of each layer of the honeycomb protective layer is filled with aluminum foam, extending outward along the surface of the tank body. The porosity of the aluminum foam filled in the interior of the honeycomb cells of several layers of the honeycomb protective layers increases in sequence; the porosity of the aluminum foam is 40-80%; the outer protective layer is made of hardened case-hardened steel; a fireproof layer is provided on the surface of the outer protective layer.

[0076] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0077] The tank body protective cover is used to protect the tank body. The tank body protective cover includes an inner protective layer and an outer protective layer provided on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers. The interior of the honeycomb cells of at least one of the honeycomb protective layers is filled with aluminum foam; the interior of the honeycomb cells of each layer of the honeycomb protective layer is filled with aluminum foam, extending outward along the surface of the tank body. The porosity of the aluminum foam filled in the interior of the honeycomb cells of several layers of the honeycomb protective layers increases in sequence; the porosity of the aluminum foam is 40-80%; the outer protective layer is made of hardened case-hardened steel; a fireproof layer is provided on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers.

[0078] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0079] The tank body protective cover is used to protect the tank body. The tank body protective cover includes an inner protective layer and an outer protective layer provided on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers. The interior of the honeycomb cells of at least one of the honeycomb protective layers is filled with aluminum foam; the interior of the honeycomb cells of each layer of the honeycomb protective layer is filled with aluminum foam, extending outward along the surface of the tank body. The porosity of the aluminum foam filled in the interior of the honeycomb cells of several layers of the honeycomb protective layers increases in sequence; the porosity of the aluminum foam is 40-80%; the outer protective layer is made of hardened case-hardened steel; a fireproof layer is provided on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers; the honeycomb protective layer is made of any one of aluminum alloy, carbon steel and stainless steel.

[0080] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0081] Tank protective cover, used to protect the tank. The tank protective cover includes an inner protective layer and an outer protective layer provided on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers, and at least one of the honeycomb cells of the honeycomb protective layer is filled with aluminum foam; the honeycomb cells of each layer of the honeycomb protective layer are filled with aluminum foam. Extending outward along the surface of the tank, the porosity of the aluminum foam filled in the honeycomb cells of several layers of the honeycomb protective layers increases in sequence; the porosity of the aluminum foam is 40-80%; the outer protective layer is made of hardened case-hardened steel; a fireproof layer is provided on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers; the honeycomb protective layer is made of any one of aluminum alloy, carbon steel and stainless steel; extending outward along the surface of the tank, the thickness of the interlayer board between adjacent honeycomb protective layers gradually decreases.

[0082] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0083] Tank protective cover, used to protect the tank. The tank protective cover includes an inner protective layer and an outer protective layer provided on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers, and at least one of the honeycomb cells of the honeycomb protective layer is filled with aluminum foam; the honeycomb cells of each layer of the honeycomb protective layer are filled with aluminum foam. Extending outward along the surface of the tank, the porosity of the aluminum foam filled in the honeycomb cells of several layers of the honeycomb protective layers increases in sequence; the porosity of the aluminum foam is 40-80%; the outer protective layer is made of hardened case-hardened steel; a fireproof layer is provided on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers; the honeycomb protective layer is made of any one of aluminum alloy, carbon steel and stainless steel; extending outward along the surface of the tank, the thickness of the interlayer board between adjacent honeycomb protective layers gradually decreases; the length and width of the honeycomb cells of the honeycomb protective layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protective layer is the same.

[0084] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0085] Tank protective cover, used to protect the tank. The tank protective cover includes an inner protective layer and an outer protective layer arranged on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers, and the inside of the honeycomb cells of at least one layer of the honeycomb protective layer is filled with aluminum foam; the inside of the honeycomb cells of each layer of the honeycomb protective layer is filled with aluminum foam, extending outward along the surface of the tank, and the porosity of the aluminum foam filled in the honeycomb cells of several layers of the honeycomb protective layer increases in sequence; the porosity of the aluminum foam is 40-80%; the outer protective layer is made of hardened carbon steel; a fireproof layer is arranged on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers; the honeycomb protective layer is made of any one of aluminum alloy, carbon steel and stainless steel; extending outward along the surface of the tank, the thickness of the interlayer board between adjacent honeycomb protective layers gradually decreases; the length and width of the honeycomb cells of the honeycomb protective layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protective layer is the same; a ceramic layer is also arranged between the inner protective layer and the outer protective layer.

[0086] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0087] Tank protective cover, used to protect the tank. The tank protective cover includes an inner protective layer and an outer protective layer arranged on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers, and the inside of the honeycomb cells of at least one layer of the honeycomb protective layer is filled with aluminum foam; the inside of the honeycomb cells of each layer of the honeycomb protective layer is filled with aluminum foam, extending outward along the surface of the tank, and the porosity of the aluminum foam filled in the honeycomb cells of several layers of the honeycomb protective layer increases in sequence; the porosity of the aluminum foam is 40-80%; the outer protective layer is made of hardened carbon steel; a fireproof layer is arranged on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers; the honeycomb protective layer is made of any one of aluminum alloy, carbon steel and stainless steel; extending outward along the surface of the tank, the thickness of the interlayer board between adjacent honeycomb protective layers gradually decreases; the length and width of the honeycomb cells of the honeycomb protective layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protective layer is the same; a ceramic layer is also arranged between the inner protective layer and the outer protective layer; the ceramic layer is made of any one of alumina ceramics, silicon carbide ceramics and boron carbide ceramics, and the Vickers hardness of the ceramic is ≥1500Hv10, the flexural strength is ≥350MPa and the fracture toughness is ≥4.5MPa·m 1 / 2 。

[0088] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0089] Tank protective cover, used for protecting the tank body. The tank protective cover includes an inner protective layer and an outer protective layer arranged on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers, and the interior of the honeycomb cells of at least one of the honeycomb protective layers is filled with aluminum foam; the outer protective layer is made of hardened case-hardened steel; a fireproof layer is arranged on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers; the honeycomb protective layer is made of any one of aluminum alloy, carbon steel and stainless steel; extending outward along the surface of the tank body, the thickness of the interlayer board between adjacent honeycomb protective layers gradually decreases; the length and width of the honeycomb cells of the honeycomb protective layer are equal, and the height of the honeycomb cells of each honeycomb protective layer is the same; a ceramic layer is also arranged between the inner protective layer and the outer protective layer; the ceramic layer is made of any one of alumina ceramics, silicon carbide ceramics and boron carbide ceramics, and the Vickers hardness of the ceramic is ≥1500Hv10, the flexural strength is ≥350MPa and the fracture toughness is ≥4.5MPa·m 1 / 2 。

[0090] In some other embodiments, the honeycomb protection device for a liquefied hydrocarbon spherical tank of the present invention includes:

[0091] Tank protective cover, used for protecting the tank body. The tank protective cover includes an inner protective layer and an outer protective layer arranged on the inner protective layer. The inner protective layer includes several layers of honeycomb protective layers, and the interior of the honeycomb cells of at least one of the honeycomb protective layers is filled with aluminum foam; the outer protective layer is made of hardened case-hardened steel; a fireproof layer is arranged on the surface of the outer protective layer; the inner protective layer includes 2-5 layers of honeycomb protective layers; the honeycomb protective layer is made of any one of aluminum alloy, carbon steel and stainless steel; the length and width of the honeycomb cells of the honeycomb protective layer are equal, and the height of the honeycomb cells of each honeycomb protective layer is the same; a ceramic layer is also arranged between the inner protective layer and the outer protective layer; the ceramic layer is made of any one of alumina ceramics, silicon carbide ceramics and boron carbide ceramics, and the Vickers hardness of the ceramic is ≥1500Hv10, the flexural strength is ≥350MPa and the fracture toughness is ≥4.5MPa·m 1 / 2 。

[0092] The present invention will be described in detail below through examples, but the protection scope of the present invention is not limited thereto.

[0093] Example 1

[0094] Based on the installation location of the liquefied hydrocarbon spherical tank, according to the layout and risk level of the devices around the liquefied hydrocarbon spherical tank, as well as the local meteorological conditions, the numerical simulation method is used to quantitatively evaluate the potential risks it faces, and the quantitative evaluation results are obtained. Specifically, in the explosion accident, the maximum mass of the splashes that the spherical tank may suffer is 25 kg, and the splash speed is 45 m / s; the peak pressure of the explosion shock wave is 69 kPa, and the positive pressure action time is 20 ms.

[0095] Implement using the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention. Specifically, the honeycomb protection device for liquefied hydrocarbon spherical tanks includes:

[0096] A tank body protection cover for protecting the tank body. The tank body protection cover includes an inner protection layer and an outer protection layer provided on the inner protection layer. The inner protection layer includes several layers of honeycomb protection layers, and at least one layer of the honeycomb cells of the honeycomb protection layer is filled with aluminum foam;

[0097] The outer protection layer is made of hardened carburized steel; a fire protection layer is provided on the surface of the outer protection layer; the inner protection layer includes 2 - 5 layers of honeycomb protection layers, and the honeycomb protection layer is made of Q235 steel in carbon steel.

[0098] Specifically, the thickness of the outer protection layer is 3 mm, and the inner protection layer includes 3 layers of honeycomb protection layers.

[0099] In the actual application process, the tank body protection cover is installed on the tank body in a semi - covered manner.

[0100] After testing, using the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of the liquefied hydrocarbon spherical tank, and has the advantages of good protection effect and good economic benefit.

[0101] Example 2

[0102] Refer to Example 1 for implementation. The difference is that the length and width of the honeycomb cells of the honeycomb protection layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protection layer is the same.

[0103] Specifically, extending outward along the surface of the tank body, the length and width of the honeycomb cells of the third honeycomb protection layer are both 80 mm, and the height is 30 mm; the length and width of the honeycomb cells of the second honeycomb protection layer are both 100 mm, and the height is 30 mm; the length and width of the honeycomb cells of the first honeycomb protection layer are both 120 mm, and the height is 30 mm.

[0104] After testing, using the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of the liquefied hydrocarbon spherical tank, and has the advantages of better protection effect and good economic benefit.

[0105] Example 3

[0106] Implemented with reference to Example 2, except that it extends outward along the surface of the tank body, and the thickness of the interlayer plate between adjacent honeycomb protective layers gradually decreases.

[0107] After testing, the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of the liquefied hydrocarbon spherical tank, and has the advantages of good protection effect and better economic benefits.

[0108] Example 4

[0109] Implemented with reference to Example 3, except that each honeycomb cell of each honeycomb protective layer is filled with aluminum foam, and along the surface of the tank body extending outward, the porosity of the aluminum foam filled in the honeycomb cells of several honeycomb protective layers increases in sequence.

[0110] After testing, the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of the liquefied hydrocarbon spherical tank, and has the advantages of better protection effect and better economic benefits.

[0111] Example 5

[0112] Implemented with reference to Example 4, except that the porosity of the aluminum foam is 40 - 80%.

[0113] After testing, the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of the liquefied hydrocarbon spherical tank, and has the advantages of better protection effect and better economic benefits.

[0114] Example 6

[0115] Implemented with reference to Example 5, except that a ceramic layer is further provided between the inner protective layer and the outer protective layer.

[0116] After testing, the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of the liquefied hydrocarbon spherical tank, and has the advantages of better protection effect and better economic benefits.

[0117] Example 7

[0118] Implemented with reference to Example 6, except that the ceramic layer is made of silicon carbide ceramic, and the Vickers hardness of the ceramic ≥ 1500Hv10, the flexural strength ≥ 350MPa and the fracture toughness ≥ 4.5MPa·m 1 / 2 .

[0119] After testing, the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of the liquefied hydrocarbon spherical tank, and has the advantages of better protection effect and better economic benefits. Specifically, the deformation amount on the surface of the tank body is 17mm.

[0120] Example 8

[0121] It is implemented with reference to Example 7, and the difference is that the inner protective layer includes 2 layers of honeycomb protective layers.

[0122] Specifically, extending outward along the surface of the tank body, the length and width of the honeycomb cells of the second honeycomb protective layer are both 100 mm, and the height is 30 mm. The length and width of the honeycomb cells of the first honeycomb protective layer are both 120 mm, and the height is 30 mm.

[0123] After testing, using the honeycomb protection device for liquefied hydrocarbon spherical tanks of the present invention can effectively protect the liquefied hydrocarbon spherical tank, and has the advantages of better protection effect and better economic benefit. Specifically, the deformation amount of the tank body surface is 22 mm.

[0124] Example 9

[0125] It is implemented with reference to Example 7, and the difference is that the inner protective layer includes 4 layers of honeycomb protective layers.

[0126] Specifically, extending outward along the surface of the tank body, the length and width of the honeycomb cells of the fourth honeycomb protective layer are both 70 mm, and the height is 30 mm. The length and width of the honeycomb cells of the third honeycomb protective layer are both 80 mm, and the height is 30 mm. The length and width of the honeycomb cells of the second honeycomb protective layer are both 100 mm, and the height is 30 mm. The length and width of the honeycomb cells of the first honeycomb protective layer are both 120 mm, and the height is 30 mm.

[0127] After testing, using the honeycomb protection device for liquefied hydrocarbon spherical tanks of the present invention can effectively protect the liquefied hydrocarbon spherical tank, and has the advantages of better protection effect and better economic benefit. Specifically, the deformation amount of the tank body surface is 14 mm.

[0128] Example 10

[0129] It is implemented with reference to Example 7, and the difference is that the inner protective layer includes 5 layers of honeycomb protective layers.

[0130] Specifically, extending outward along the surface of the tank body, the length and width of the honeycomb cells of the fifth honeycomb protective layer are both 80 mm, and the height is 30 mm. The length and width of the honeycomb cells of the fourth honeycomb protective layer are both 70 mm, and the height is 30 mm. The length and width of the honeycomb cells of the third honeycomb protective layer are both 80 mm, and the height is 30 mm. The length and width of the honeycomb cells of the second honeycomb protective layer are both 100 mm, and the height is 30 mm. The length and width of the honeycomb cells of the first honeycomb protective layer are both 120 mm, and the height is 30 mm.

[0131] After testing, the honeycomb protection device for liquefied hydrocarbon spherical tanks described in the present invention can effectively protect the tank body of liquefied hydrocarbon spherical tanks, and has the advantages of better protection effect and better economic benefits. Specifically, the deformation of the tank body surface is 7 mm.

[0132] Furthermore, the present invention discovers through research that when the inner protective layer includes 2 - 5 layers of honeycomb protective layers, the relationship between the surface deformation f of the liquefied hydrocarbon spherical tank body and the number of layers z of the honeycomb protective layer satisfies the formula: f = -1z 3 +10z 2 -36z + 62. Thus, in practical applications, it is possible to more quickly and accurately design the honeycomb protection device for liquefied hydrocarbon spherical tanks that meets the requirements according to the maximum impact force of the flying objects that the liquefied hydrocarbon spherical tank body may be subjected to, and save costs.

[0133] The honeycomb protection device for liquefied hydrocarbon spherical tanks and its design method provided by the present invention can effectively ensure the safety of the spherical tank by using the tank body protective cover to protect the tank body, prevent flying objects from directly impacting the spherical tank and causing the spherical tank to be damaged, and has the advantages of simple operation, simple structure, high safety and cost savings.

[0134] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention. To avoid unnecessary repetition, the present invention will not separately describe various possible combinations. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. A honeycomb protection device for a liquefied hydrocarbon spherical tank, characterized in that The honeycomb protection device for the liquefied hydrocarbon spherical tank includes: A tank body protection cover for protecting the tank body. The tank body protection cover includes an inner protection layer and an outer protection layer provided on the inner protection layer. The inner protection layer includes several layers of honeycomb protection layers, and at least one layer of the honeycomb cells of the honeycomb protection layer is filled with aluminum foam.

2. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1, wherein The honeycomb cells of each layer of the honeycomb protection layer are filled with aluminum foam. Extending outward along the surface of the tank body, the porosity of the aluminum foam filled in the honeycomb cells of several layers of the honeycomb protection layers increases sequentially.

3. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1 or 2, characterized in that, The porosity of the aluminum foam is 40-80%.

4. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1 or 2, characterized in that, A ceramic layer is also provided between the inner protection layer and the outer protection layer.

5. The honeycomb protection device for liquefied hydrocarbon spherical tanks according to claim 4, wherein, The ceramic layer is made of any one of alumina ceramics, silicon carbide ceramics, and boron carbide ceramics, and the Vickers hardness of the ceramic is ≥1500 Hv10, the flexural strength is ≥350 MPa, and the fracture toughness is ≥4.5 MPa·m 1 / 2 .

6. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1 or 5, characterized in that, Extending outward along the surface of the tank body, the thickness of the interlayer board between adjacent honeycomb protection layers gradually decreases.

7. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1, wherein The inner protection layer includes 2-5 layers of honeycomb protection layers.

8. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1 or 7, characterized in that, The honeycomb protection layer is made of any one of aluminum alloy, carbon steel and stainless steel.

9. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1 or 7, characterized in that, The length and width of the honeycomb cells of the honeycomb protection layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protection layer is the same.

10. The honeycomb protection device for liquefied hydrocarbon spherical tanks according to claim 1, characterized in that, The outer protection layer is made of hardened case-hardened steel and has a thickness of 2-5 mm.

11. The honeycomb protection device for a liquefied hydrocarbon spherical tank according to claim 1 or 10, characterized in that, A fire protection layer is provided on the surface of the outer protection layer.

12. A design method for a honeycomb protection device for a liquefied hydrocarbon spherical tank, characterized in that, Applied to the honeycomb protection device for the liquefied hydrocarbon spherical tank according to any one of the above claims 1-11, the design method includes: Based on the installation position of the liquefied hydrocarbon spherical tank, quantitatively evaluate the risks it faces and obtain the quantitative evaluation result; Design the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the quantitative evaluation result.

13. The design method of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to claim 12, characterized in that, The quantitative evaluation of the risks it faces specifically includes: According to the layout and risk level of the devices around the liquefied hydrocarbon spherical tank and the local meteorological conditions, use the numerical simulation method to quantitatively evaluate the risks it faces.

14. The design method of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to claim 12, characterized in that, The design of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the quantitative evaluation result specifically includes: Design the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the maximum value of the impact force of the splashes in the quantitative evaluation result.

15. The design method of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to claim 14, characterized in that, The design of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to the maximum value of the impact force of the splashes in the quantitative evaluation result specifically includes: Make the size of the length and / or width of the honeycomb cells of the honeycomb protection layer satisfy: y = 1.6667x 3 -10x 2 -1.6667x + 130 Where x is the level of the honeycomb protection layer, and y is the size of the length and / or width of the honeycomb cells of the honeycomb protection layer corresponding to the level of the honeycomb protection layer, and its unit is mm.

16. The design method of the honeycomb protection device for the liquefied hydrocarbon spherical tank according to claim 15, characterized in that, The length and width of the honeycomb cells of the honeycomb protection layer are equal, and the height of the honeycomb cells of each layer of the honeycomb protection layer is the same, and the size of the height is 20-40 mm.

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