Dangerous gas cylinder protection device and dangerous gas cylinder

Abstract

The present application relates to a kind of dangerous gas cylinder protection device and dangerous gas cylinder.The protection device includes inner shell, outer shell and filling part, the inner shell is surrounded with accommodating cavity, the outer shell is sleeved in the inner shell, and with the inner shell between surrounding filling cavity, filling part is contained in filling cavity, filling part includes first foamed aluminum layer and second foamed aluminum layer, first foamed aluminum layer is abutted to the inner shell, second foamed aluminum layer is abutted to the outer shell, the density of second foamed aluminum layer is greater than the density of first foamed aluminum layer.The density of second foamed aluminum layer is greater than the density of first foamed aluminum layer, when dangerous gas cylinder explodes, the first foamed aluminum layer with smaller density has good buffering performance, so as to be compressed quickly, absorb explosion shock wave, and through the second foamed aluminum layer with greater density, absorb greater explosion shock wave, improve the reaction speed and effect of energy absorption of filling part, so as to improve the reliability of dangerous gas cylinder protection device.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder technology, and in particular to a protective device for hazardous gas cylinders and a hazardous gas cylinder. Background Technology

[0002] The storage of hazardous gases (such as methane, ethylene, oxygen, natural gas, coal gas, and hydrogen) is a major concern for safe production. Currently, companies typically use specialized gas cylinders to store hazardous gases and install leak detectors in the warehouses or production workshops where these cylinders are located for early warning and detection. However, the explosion-proof capabilities of existing hazardous gas cylinders are limited, and there is still a possibility of explosion during use or transportation. Furthermore, the shockwave generated by such an explosion can have a significant destructive effect on the surrounding environment. Summary of the Invention

[0003] Therefore, it is necessary to provide a protective device for hazardous gas storage cylinders to address the technical problems that existing hazardous gas storage cylinders have limited explosion-proof capabilities, still have the possibility of explosion during use or transportation, and whose shock waves generated by the explosion have a strong destructive effect on the surrounding environment.

[0004] A protective device for a hazardous gas storage cylinder includes an inner shell, an outer shell, and a filling part. The inner shell surrounds a cavity for storing the hazardous gas storage cylinder. The outer shell is fitted onto the inner shell, and a filling cavity is formed between the outer shell and the inner shell. The filling part is housed in the filling cavity. The filling part includes at least two layers of aluminum foam, including a first aluminum foam layer and a second aluminum foam layer. The first aluminum foam layer abuts against the inner shell, and the second aluminum foam layer abuts against the outer shell. The density of the second aluminum foam layer is greater than the density of the first aluminum foam layer.

[0005] In one embodiment, the filling portion further includes a covering layer located between the first aluminum foam layer and the second aluminum foam layer, the covering layer having a metal mesh structure.

[0006] In one embodiment, the covering layer further includes a fixing plate layer, the metal mesh structure being disposed on the fixing plate layer, and the fixing plate layer being made of rubber, ultra-high molecular weight polyethylene, or polyurethane.

[0007] In one embodiment, the filling portion further includes multiple layers of ceramic particles;

[0008] A plurality of ceramic particle layers are filled between the first aluminum foam layer and the covering layer; and / or, a plurality of ceramic particle layers are provided between the second aluminum foam layer and the covering layer.

[0009] In one embodiment, the ceramic particle layer comprises a plurality of ceramic spheres of the same or different diameters.

[0010] In one embodiment, the ceramic particle layer is provided between the first aluminum foam layer and the covering layer, and between the second aluminum foam layer and the covering layer;

[0011] The diameter of the ceramic ball located between the first aluminum foam layer and the coating layer is smaller than the diameter of the ceramic ball located between the second aluminum foam layer and the coating layer.

[0012] In one embodiment, the at least two aluminum foam layers further include a third aluminum foam layer disposed between the ceramic particle layer and the coating layer.

[0013] In one embodiment, the density of the third aluminum foam layer is greater than the density of the first aluminum foam layer and less than the density of the second aluminum foam layer.

[0014] In one embodiment, the ceramic particle layer is provided between the first aluminum foam layer and the covering layer, and between the second aluminum foam layer and the covering layer. There are two third aluminum foam layers. The density of the third aluminum foam layer located between the first aluminum foam layer and the covering layer is less than the density of the third aluminum foam layer located between the second aluminum foam layer and the covering layer.

[0015] The present invention also provides a hazardous gas storage cylinder that can solve at least one of the above-mentioned technical problems.

[0016] A hazardous gas storage cylinder includes the aforementioned hazardous gas storage cylinder protection device and a cylinder body. The cylinder body has a cavity for containing hazardous gas, and the cylinder body is contained in the cavity and covered by the hazardous gas storage cylinder protection device.

[0017] Beneficial effects:

[0018] The hazardous gas cylinder protection device provided in this invention includes an inner shell, an outer shell, and a filling part. The inner shell surrounds a cavity for storing the hazardous gas cylinder. The outer shell is fitted onto the inner shell, and a filling cavity is formed between the outer shell and the inner shell. The filling part is housed in the filling cavity and includes at least two layers of aluminum foam, including a first aluminum foam layer and a second aluminum foam layer. The first aluminum foam layer abuts against the inner shell, and the second aluminum foam layer abuts against the outer shell. The density of the second aluminum foam layer is greater than that of the first aluminum foam layer. By including at least two layers of aluminum foam in the filling part, this application can absorb the explosive shock when the hazardous gas cylinder explodes, reducing environmental damage. The second aluminum foam layer has a higher density than the first aluminum foam layer. When the hazardous gas cylinder explodes, the lower-density first aluminum foam layer has good buffering performance, allowing for rapid compression and absorption of the explosive shock wave. The higher-density second aluminum foam layer absorbs a larger explosive shock wave, improving the energy absorption reaction speed and effect of the filling part, thereby enhancing the reliability of the hazardous gas cylinder protection device.

[0019] The present invention also provides a hazardous gas storage cylinder, including the aforementioned hazardous gas storage cylinder protection device, and a cylinder body. The cylinder body has a cavity for containing hazardous gas, and the cylinder body is housed within the cavity and covered by the hazardous gas storage cylinder protection device. This hazardous gas storage cylinder can achieve at least one of the aforementioned technical effects. Attached Figure Description

[0020] Figure 1 This is a partial schematic diagram of a hazardous gas storage cylinder protection device provided in an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional view of a hazardous gas storage cylinder provided in an embodiment of the present invention.

[0022] Figure 3 This is a partial cross-sectional view of the coating layer in a hazardous gas storage cylinder protection device provided in an embodiment of the present invention.

[0023] Icon labels:

[0024] 100-Inner shell; 200-Outer shell; 300-Filling part; 310-First aluminum foam layer; 320-Second aluminum foam layer; 330-Covering layer; 331-Fixing plate layer; 332-Metal mesh structure; 340-Ceramic particle layer; 350-Third aluminum foam layer; 400-Bottle body; 410-Bottle cavity. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] See Figure 1 and Figure 2 , Figure 1 This is a partial schematic diagram of a hazardous gas storage cylinder protection device provided in an embodiment of the present invention. Figure 2 This is a cross-sectional view of a hazardous gas storage cylinder according to an embodiment of the present invention. The hazardous gas storage cylinder protection device provided in an embodiment of the present invention includes an inner shell 100, an outer shell 200, and a filling portion 300. The inner shell 100 surrounds a cavity for storing the hazardous gas storage cylinder. The outer shell 200 is fitted onto the inner shell 100, and a filling cavity is formed between the outer shell 200 and the inner shell 100. The filling portion 300 is accommodated in the filling cavity and includes at least two layers of aluminum foam. The at least two layers of aluminum foam include a first aluminum foam layer 310 and a second aluminum foam layer 320. The first aluminum foam layer 310 abuts against the inner shell 100, and the second aluminum foam layer 320 abuts against the outer shell 200. The density of the second aluminum foam layer 320 is greater than the density of the first aluminum foam layer 310.

[0032] Specifically, in this application, the filling part 300 includes at least two layers of aluminum foam, which can absorb the blast shock and other effects when a hazardous gas storage cylinder explodes, reducing environmental damage. The second aluminum foam layer 320 has a higher density than the first aluminum foam layer 310. When the hazardous gas storage cylinder explodes, the lower-density first aluminum foam layer 310 has good buffering performance, allowing it to compress quickly and absorb the blast shock wave. The higher-density second aluminum foam layer 320 absorbs a larger blast shock wave, improving the energy absorption speed and effectiveness of the filling part 300, thereby enhancing the reliability of the hazardous gas storage cylinder protection device. Preferably, each aluminum foam layer is closed-cell aluminum foam.

[0033] Furthermore, the inner shell 100 and outer shell 200 protect the filling layer, preventing damage to the foamed aluminum layer during use and transportation. They also prevent complete disintegration of the gas cylinder protection device after an explosion, thus improving its reliability. Preferably, the inner shell 100 and outer shell 200 are made of aluminum or steel.

[0034] The first aluminum foam layer 310 can be connected to the inner shell 100 by adhesive bonding or brazing, and the second aluminum foam layer 320 can be connected to the outer shell 200 by adhesive bonding or brazing.

[0035] It should be noted that aluminum foam possesses numerous excellent properties, including lightweight, high specific stiffness, damping and vibration reduction, sound insulation and noise reduction, energy absorption and impact protection, heat insulation, fire resistance, and corrosion resistance. These properties enable it to absorb the blast shock when a hazardous gas cylinder explodes. Specifically, the lower the density of the aluminum foam, the stronger its deformation capacity. This allows it to deform rapidly in the initial stages of an explosion, when the blast force is relatively small, thus absorbing a large amount of energy during compression and reducing cylinder wall deformation, impact, and absorbing the blast shock wave. Conversely, the higher the density of the aluminum foam, the higher its compressive strength and the stronger its ability to absorb the blast shock wave.

[0036] It should also be noted that the aluminum foam layer is composed of many small pores filled with gas, resulting in a low acoustic impedance. The lower the acoustic impedance, the better the sound wave absorption effect. At the same time, the gaps between the aluminum foam layers can also scatter sound waves, allowing the sound waves to diffuse and attenuate inside the filling part 300, thus reducing the explosion sound during the explosion process.

[0037] See Figure 1 , Figure 2 and Figure 3 , Figure 3 This is a partial cross-sectional view of the covering layer in a hazardous gas cylinder protection device according to an embodiment of the present invention. In one embodiment, the filling portion 300 further includes a covering layer 330, which is located between a first aluminum foam layer 310 and a second aluminum foam layer 320. The covering layer 330 has a metal mesh structure 332, thereby improving the strength of the filling portion 300 and preventing the aluminum foam layer inside the filling portion 300 from breaking and splashing.

[0038] Furthermore, the covering layer 330 also includes a fixing plate layer 331, within which a metal mesh structure 332 is disposed. The fixing plate layer 331 can be made of rubber, ultra-high molecular weight polyethylene, or polyurethane. The metal mesh structure 332 can be a steel wire mesh.

[0039] See Figure 1 and Figure 2 In one embodiment, the filling portion 300 further includes a ceramic particle layer 340, which is filled between the first aluminum foam layer 310 and the covering layer 330.

[0040] Specifically, the strength of the ceramic particle layer 340 is generally higher than that of metal, and thus higher than that of the aluminum foam layer. This improves the compressive strength of the filling layer and enhances the stability of the hazardous gas cylinder protection device. Furthermore, the ceramic particle layer 340 is relatively brittle. In the event of a hazardous gas cylinder explosion, the ceramic particle layer 340 can absorb energy as it breaks, absorbing the blast shock wave and slowing the transmission of the blast sound wave, thereby improving the reliability of the hazardous gas cylinder protection device. Additionally, by placing the ceramic particle layer 340 on one side of the covering layer 330, it can be embedded in the surface of the fixing plate layer 331, thereby constraining the ceramic particle layer 340 and reducing the fragmentation and splashing of the ceramic particle layer 340 upon breakage.

[0041] See Figure 1 and Figure 2 In another embodiment, a ceramic particle layer 340 is provided between the second aluminum foam layer 320 and the covering layer 330.

[0042] Specifically, the strength of the ceramic particle layer 340 is generally higher than that of metal, and thus higher than that of the aluminum foam layer. This improves the compressive strength of the filling layer and enhances the stability of the hazardous gas cylinder protection device. Furthermore, the ceramic particle layer 340 is relatively brittle; in the event of a hazardous gas cylinder explosion, it can absorb energy and the blast wave as it breaks, thereby improving the reliability of the hazardous gas cylinder protection device. Additionally, by placing the ceramic particle layer 340 on one side of the covering layer 330, it can be embedded in the surface of the fixing plate layer 331, thus constraining the ceramic particle layer 340 and reducing the fragmentation and splashing of the ceramic particle layer 340 upon breakage.

[0043] See Figure 1 and Figure 2 In another embodiment, ceramic particle layers 340 are provided between the first aluminum foam layer 310 and the covering layer 330, and between the second aluminum foam layer 320 and the covering layer 330, thereby further improving the compressive strength of the filling part 300 and its ability to absorb explosion shock waves and slow down the transmission of explosion sound waves, thereby improving the reliability of the dangerous gas storage cylinder protection device.

[0044] Among them, the metal mesh structure 332 in the filling part 300, the porous structure in the aluminum foam layer, and the ceramic particle layer 340 have different transmission velocities for shock waves. These structures can prolong the action time of the shock waves in the filling part 300, reduce the peak value of the shock waves, and improve the energy absorption performance of the filling part 300. The ceramic particle layer 340 also has the function of dispersing shock waves. When the shock waves are evenly dispersed into the aluminum foam layer, the energy of the shock waves is consumed through the compression deformation and crushing loss of the aluminum foam layer, thereby improving the shock resistance and explosion protection performance of the hazardous gas storage cylinder protection device.

[0045] See Figure 1 and Figure 2 In one embodiment, the ceramic particle layer 340 includes a plurality of ceramic spheres with the same or different diameters. That is, the diameters of the ceramic spheres are the same or different. The combination of ceramic spheres with different diameters can fill gaps and increase the space ratio of ceramic spheres.

[0046] See Figure 1 and Figure 2 In one embodiment, ceramic particle layers 340 are provided between the first aluminum foam layer 310 and the covering layer 330, and between the second aluminum foam layer 320 and the covering layer 330; the diameter of the ceramic spheres located between the first aluminum foam layer 310 and the covering layer 330 is smaller than the diameter of the ceramic spheres located between the second aluminum foam layer 320 and the covering layer 330.

[0047] Specifically, for ease of description, the ceramic ball located between the first aluminum foam layer 310 and the covering layer 330 is defined as the first particle, and the ceramic ball located between the second aluminum foam layer 320 and the covering layer 330 is defined as the second particle. The size of the first particle is smaller than that of the second particle, so the strength of the first particle is less than that of the second particle. This allows the first particle to break in the early stage of an explosion of the hazardous gas storage cylinder, i.e., when the explosion impact force is relatively small, thus absorbing the explosion shock wave and improving the reaction efficiency. In addition, the strength of the filling part 300 is improved by the stronger second particle, thereby improving the reliability of the hazardous gas storage cylinder protection device.

[0048] See Figure 1 and Figure 2 In one embodiment, at least two aluminum foam layers further include a third aluminum foam layer 350, which is disposed between the ceramic particle layer 340 and the covering layer 330.

[0049] Specifically, the ceramic particle layer 340 can be stably pressed into a preset position by the cooperation of the first aluminum foam layer 310 or the second aluminum foam layer 320 and the third aluminum foam layer 350, thereby improving the stability of the filling part 300. The first aluminum foam layer 310 or the second aluminum foam layer 320 and the third aluminum foam layer 350 are connected by adhesive bonding, and the ceramic particle layer 340 is directly embedded between the first aluminum foam layer 310 or the second aluminum foam layer 320 and the third aluminum foam layer.

[0050] See Figure 1 and Figure 2In one embodiment, the density of the third aluminum foam layer 350 is greater than that of the first aluminum foam layer 310 and less than that of the second aluminum foam layer 320, so that the aluminum foam layers in the filling part 300 can be distributed in a gradient. This allows the third aluminum foam layer 350 to have a faster energy absorption reaction speed and a better energy absorption effect, thereby improving the reliability of the hazardous gas storage cylinder protection device.

[0051] See Figure 1 and Figure 2 In one embodiment, ceramic particle layers 340 are provided between the first aluminum foam layer 310 and the covering layer 330, and between the second aluminum foam layer 320 and the covering layer 330. There are two third aluminum foam layers 350. The density of the third aluminum foam layer 350 located between the first aluminum foam layer 310 and the covering layer 330 is less than the density of the third aluminum foam layer 350 located between the second aluminum foam layer 320 and the covering layer 330.

[0052] Specifically, in the direction from the inner shell 100 to the outer shell 200, the density of each foam aluminum layer gradually increases, thus presenting a gradient distribution. As a result, when the hazardous gas storage cylinder explodes, each foam aluminum layer is gradually destroyed, thereby absorbing shock waves of different energies and improving the reliability of the hazardous gas storage cylinder protection device.

[0053] Furthermore, the density of the first aluminum foam layer 310 is 0.25~0.3 g / cm³. 3 The density of the third aluminum foam layer 350, located between the first aluminum foam layer 310 and the covering layer 330, is 0.3~0.35 g / cm³. 3 The density of the third aluminum foam layer 350, located between the second aluminum foam layer 320 and the covering layer 330, is 0.35~0.45 g / cm³. 3 The density of the second aluminum foam layer 320 is 0.45~0.6 g / cm³. 3 .

[0054] In other embodiments, the at least two aluminum foam layers may also include other aluminum foam layers, which may be such that the density of each aluminum foam layer gradually increases in the direction from the inner housing 100 to the outer housing 200.

[0055] This invention also provides a hazardous gas storage cylinder, including the aforementioned hazardous gas storage cylinder protection device, and a cylinder body 400. The cylinder body 400 has a cavity 410 for containing hazardous gas. The cylinder body 400 is contained in the cavity and is covered by the hazardous gas storage cylinder protection device.

[0056] Specifically, in this application, the filling part 300 includes at least two layers of aluminum foam, which can absorb the impact of the explosion when the hazardous gas storage cylinder explodes, thereby reducing environmental damage. The density of the second aluminum foam layer 320 is greater than that of the first aluminum foam layer 310. When the hazardous gas storage cylinder explodes, the lower density first aluminum foam layer 310 has good buffering performance, which can be quickly compressed to absorb the explosion shock wave. The higher density second aluminum foam layer 320 absorbs a larger explosion shock wave, improving the energy absorption reaction speed and effect of the filling part 300, thereby improving the safety of the hazardous gas storage cylinder.

[0057] Furthermore, the bottle body 400 is also equipped with a bottle valve, which is used to control the opening and closing of the opening on the bottle body 400. The bottle valve is also located inside the receiving cavity.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A protective device for a hazardous gas storage cylinder, characterized in that, The hazardous gas cylinder protection device includes an inner shell, an outer shell, and a filling part. The inner shell surrounds a cavity for storing the hazardous gas cylinder. The outer shell is fitted onto the inner shell, and a filling cavity is formed between the outer shell and the inner shell. The filling part is housed in the filling cavity. The filling part includes at least two layers of aluminum foam, a covering layer, and a ceramic particle layer. The at least two layers of aluminum foam include a first aluminum foam layer and a second aluminum foam layer. The first aluminum foam layer abuts against the inner shell, and the second aluminum foam layer abuts against the outer shell. The density of the second aluminum foam layer is greater than that of the first aluminum foam layer. The first aluminum foam layer is connected to the inner shell by bonding or brazing, and the second aluminum foam layer is connected to the outer shell by bonding or brazing. The covering layer is located between the first aluminum foam layer and the second aluminum foam layer, and the covering layer has a metal mesh structure; The ceramic particle layer is provided between the first aluminum foam layer and the covering layer, and between the second aluminum foam layer and the covering layer. The ceramic particle layer includes a plurality of ceramic spheres with the same or different diameters. The diameter of the ceramic ball located between the first aluminum foam layer and the coating layer is smaller than the diameter of the ceramic ball located between the second aluminum foam layer and the coating layer.

2. The hazardous gas storage cylinder protection device according to claim 1, characterized in that, The covering layer also includes a fixing plate layer, and the metal mesh structure is disposed within the fixing plate layer. The fixing plate layer is made of rubber, ultra-high molecular weight polyethylene, or polyurethane.

3. The protective device for hazardous gas storage cylinders according to claim 1, characterized in that, The at least two layers of aluminum foam also include a third layer of aluminum foam, which is disposed between the ceramic particle layer and the coating layer.

4. The hazardous gas storage cylinder protection device according to claim 3, characterized in that, The density of the third aluminum foam layer is greater than that of the first aluminum foam layer and less than that of the second aluminum foam layer.

5. The hazardous gas storage cylinder protection device according to claim 4, characterized in that, The number of the third aluminum foam layers is two, and the density of the third aluminum foam layer located between the first aluminum foam layer and the covering layer is less than the density of the third aluminum foam layer located between the second aluminum foam layer and the covering layer.

6. A hazardous gas storage cylinder, characterized in that, The hazardous gas storage cylinder protection device according to any one of claims 1-5 further includes a cylinder body, wherein the cylinder body is provided with a cavity for containing hazardous gas, the cylinder body is contained in the cavity and is covered by the hazardous gas storage cylinder protection device.

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