Double-layer structure mine oxygen cylinder

Abstract

This invention discloses a double-layer structure oxygen cylinder for mining, belonging to the field of oxygen cylinder technology. It includes an oxygen cylinder body with a bottom buffer section at its bottom. An inner liner is located within the oxygen cylinder body, and a tank buffer section is provided between the inner liner and the oxygen cylinder body. The bottom buffer section includes a base located at the bottom of the oxygen cylinder body, with an installation groove inside the base. An elastic buffer element is installed in the installation groove and connected to the oxygen cylinder body. The effect is that by setting up the bottom buffer section, the elastic compression of the spring and the tilting swing of the universal joint work together. When the oxygen cylinder experiences a bottom drop or a vertical impact, the impact force is transmitted to the spring through the base. The spring compresses and absorbs the energy, while the universal joint allows the cylinder to tilt moderately, transforming rigid impact into flexible buffering and effectively dispersing stress.

Description

Technical Field

[0001] This invention belongs to the field of oxygen cylinder technology, and in particular to a double-layer structure oxygen cylinder for mining. Background Technology

[0002] Oxygen cylinders, as the name suggests, are special high-pressure containers used to store and transport oxygen. They are a type of special pressure vessel. Since oxygen is usually stored in the form of high-pressure compressed gas (up to 15 MPa, or about 150 atmospheres), oxygen cylinders must meet extremely strict pressure, sealing, and impact resistance safety and industry technical standards in their design and manufacture.

[0003] In mining operations, the underground environment is complex and changeable, with risks of leaks of harmful gases such as methane and carbon monoxide, as well as oxygen deficiency. Therefore, oxygen cylinders are essential personal protective equipment for miners in dangerous underground areas or during emergency rescues. Their safety and reliability are directly related to the miners' lives. Currently, most oxygen cylinders used in mines adopt the traditional single-layer structure design, with the main material being steel or aluminum alloy. Although such single-layer oxygen cylinders can meet the basic strength requirements of conventional pressure vessels, they show obvious deficiencies under the special working conditions of underground mines.

[0004] Specifically, underground tunnels are narrow and have limited lighting. During operations, equipment is frequently moved, making oxygen cylinders prone to accidental bumps, rollovers, or even falling from heights. Because single-layer cylinders lack effective external buffer protection structures, once subjected to strong local impacts, the metal of the cylinder may develop dents, cracks, or stress concentrations. Under continuous internal pressure, the damaged areas can easily expand rapidly and cause the cylinder to burst.

[0005] The purpose of this invention is to provide a double-layer structure oxygen cylinder for mining, in order to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a double-layer structure oxygen cylinder for mining, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a double-layer structure oxygen cylinder for mining, comprising an oxygen cylinder body, a bottom buffer portion at the bottom of the oxygen cylinder body, an inner liner inside the oxygen cylinder body, a tank buffer portion between the inner liner and the oxygen cylinder body, the bottom buffer portion including a base at the bottom of the oxygen cylinder body, an installation groove inside the base, an elastic buffer element connected to the oxygen cylinder body inside the installation groove, and the tank buffer portion including two protective layers between the inner liner and the oxygen cylinder body, with a plurality of honeycomb holes on the outer side of the protective layers.

[0008] Furthermore, the elastic buffer includes a universal joint disposed in the mounting groove, and a connecting plate is provided at the front end of the universal joint.

[0009] Furthermore, the connecting plate is connected to the bottom of the oxygen cylinder body, and several springs are provided at the bottom of the connecting plate, with the springs connected to the base.

[0010] Furthermore, the protective layer is made of heat dissipation material, and the honeycomb holes are filled with heat dissipation material, and an air inlet is provided at the top of the oxygen cylinder body.

[0011] Furthermore, the two protective layers are connected by a connecting post, and a bellows buffer layer is provided between the two protective layers.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This invention, by setting a bottom buffer section, utilizes the synergistic effect of the elastic compression of the spring and the tilting swing of the universal joint. When the oxygen cylinder falls from the bottom or is subjected to a vertical impact, the impact force is transmitted to the spring through the base. The spring is compressed to absorb energy, and the universal joint allows the cylinder to tilt moderately, thus transforming rigid impact into flexible buffering and effectively dispersing stress.

[0014] 2. This invention incorporates a buffer section between the inner liner and the oxygen cylinder body. When the cylinder body is subjected to lateral impact or compression, the walls of the honeycomb pores can undergo plastic deformation to absorb and dissipate impact energy, forming the first buffer barrier and effectively protecting the inner liner from direct damage. Simultaneously, the two protective layers are reinforced by connecting columns, and an accordion buffer layer is added. When encountering axial impact, compression, or bending loads, the pleated structure of the accordion buffer layer can expand, contract, and bend, further consuming residual impact force. The connecting columns can also limit the maximum relative displacement of the protective layers, achieving a synergistic effect of double-layer protection and accordion buffer, greatly enhancing the overall multi-directional impact resistance of the oxygen cylinder. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the bottom buffer section in this invention;

[0018] Figure 3 This is a schematic diagram of the inner liner structure in this invention;

[0019] Figure 4 This is a schematic diagram of the tank buffer section in this invention;

[0020] Figure 5 This is a schematic diagram of the accordion buffer layer in this invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] In the picture:

[0023] 1. Oxygen cylinder body; 2. Air inlet; 3. Bottom buffer; 31. Base; 32. Connecting plate; 33. Spring; 34. Universal joint; 35. Mounting slot; 4. Inner liner; 5. Tank buffer; 51. Protective layer; 52. Honeycomb holes; 53. Connecting column; 54. Bellows buffer layer. Detailed Implementation

[0024] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0025] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this invention, and are explained here together.

[0026] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0027] Please see Figures 1 to 5 As shown, a double-layer structure oxygen cylinder for mining includes an oxygen cylinder body 1, an air inlet 2, a bottom buffer 3, an inner liner 4, and a tank buffer 5. The oxygen cylinder body 1 is cylindrical in shape, with an air inlet 2 at the top for filling and releasing oxygen. The air inlet 2 can be fitted with conventional accessories such as valves. The inner liner 4 is located inside the oxygen cylinder body 1 and is used to store high-pressure oxygen. It is made of high-strength metal material. An annular space is formed between the outer wall of the inner liner 4 and the inner wall of the oxygen cylinder body 1. The tank buffer 5 is arranged in this annular space. The bottom buffer 3 is fixedly connected to the bottom of the oxygen cylinder body 1.

[0028] like Figure 2As shown, the bottom buffer section 3 includes a base 31, a connecting plate 32, multiple springs 33, a universal joint 34, and a mounting groove 35. The base 31 supports the entire oxygen cylinder, and its upper surface has a downwardly recessed mounting groove 35. An elastic buffer element is housed inside the mounting groove 35. This elastic buffer element is composed of the universal joint 34 and the connecting plate 32. The lower end of the universal joint 34 is fixedly installed at the center of the bottom wall of the mounting groove 35, and the upper end of the universal joint 34 is movably connected to the center of the connecting plate 32 through a ball joint or universal coupling structure, allowing the connecting plate 32 to tilt freely relative to the base 31 within a certain angle range. The upper surface of the connecting plate 32 is fixedly connected to the bottom of the oxygen cylinder body 1. The connection method can be welding, bolt connection, etc. Several springs 33 are arranged between the lower surface of the connecting plate 32 and the bottom wall of the mounting groove 35. These springs 33 are evenly distributed along the circumference of the connecting plate 32. The upper end of the spring 33 is fixed to the lower surface of the connecting plate 32, and the lower end is fixed to the bottom wall of the mounting groove 35. The spring 33 can be a helical compression spring, which plays a role in vertical buffering and shock absorption. When the oxygen cylinder is accidentally dropped or impacted from the bottom, the base 31 is subjected to force first, and the spring 33 is compressed to absorb the impact energy. At the same time, the universal joint 34 allows the oxygen cylinder body 1 to tilt moderately or shake slightly, thereby dispersing the impact force and avoiding rigid transmission that could damage the inner liner 4.

[0029] like Figure 3 and Figure 4 As shown, the tank buffer section 5 includes two protective layers 51, namely an inner protective layer and an outer protective layer. The inner protective layer is tightly attached to the outer surface of the inner liner 4, and the outer protective layer is tightly attached to the inner surface of the oxygen cylinder body 1. Both protective layers 51 are made of heat dissipation material, preferably aluminum alloy, copper alloy or high thermal conductivity engineering plastic with good thermal conductivity. Multiple honeycomb holes 52 are opened on the outer surface of the protective layer 51. The honeycomb holes 52 are preferably designed as hexagonal holes, arranged in a honeycomb pattern. Each honeycomb hole 52 is filled with heat dissipation material, which is thermally conductive silicone grease, used to quickly conduct the heat generated by the inner liner 4 to the oxygen cylinder body 1 and dissipate it outward, preventing the local temperature inside the oxygen cylinder from becoming too high. When subjected to radial impact, the pore walls of the honeycomb holes 52 can absorb the lateral impact energy through their own plastic deformation, thereby forming the first buffer barrier for the inner liner 4.

[0030] like Figure 4 and Figure 5As shown, the two protective layers 51 are fixedly connected by multiple connecting posts 53. The connecting posts 53 are located in the annular gap between the two protective layers 51, evenly distributed along the circumference. Their ends are rigidly connected to the outer wall of the inner protective layer and the inner wall of the outer protective layer, respectively. The function of the connecting posts 53 is to ensure the spacing between the two protective layers 51 and the overall structural stability. In this annular gap, a bellows-like buffer layer 54 is also added. The bellows-like buffer layer 54 is an annular elastic component with continuous pleats, and its axial cross-section has a waveform similar to that of an accordion bellows. The inner edge of the bellows buffer layer 54 is in contact or connected to the inner protective layer, and the outer edge is in contact or connected to the outer protective layer. Its material can be spring steel or high-temperature resistant elastomer, so that it has good elastic expansion and contraction capacity. When the oxygen cylinder is subjected to axial impact, compression or radial load, the pleated structure of the bellows buffer layer 54 expands, contracts or bends, which can effectively consume and absorb impact energy. At the same time, the connecting column 53 limits the maximum relative movement of the two protective layers 51, preventing the bellows buffer layer 54 from failing due to over-travel deformation, thereby achieving a double buffering effect.

[0031] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-layered oxygen cylinder for mining, characterized in that: include The oxygen cylinder body (1) has a bottom buffer part (3) at the bottom, an inner liner (4) inside the oxygen cylinder body (1), and a tank buffer part (5) between the inner liner (4) and the oxygen cylinder body (1). The bottom buffer part (3) includes a base (31) provided at the bottom of the oxygen cylinder body (1), and an installation groove (35) is provided in the base (31). An elastic buffer is provided in the installation groove (35) and connected to the oxygen cylinder body (1). The tank buffer section (5) includes two protective layers (51) disposed between the inner liner (4) and the oxygen cylinder body (1), and the outer side of the protective layer (51) has a number of honeycomb holes (52).

2. The double-layer structure oxygen cylinder for mining according to claim 1, characterized in that: The elastic buffer includes a universal joint (34) disposed in the mounting groove (35), and a connecting plate (32) is provided at the front end of the universal joint (34).

3. A double-layer structure oxygen cylinder for mining according to claim 2, characterized in that: The connecting plate (32) is connected to the bottom of the oxygen cylinder body (1), and a number of springs (33) are provided at the bottom of the connecting plate (32), and the springs (33) are connected to the base (31).

4. A double-layered oxygen cylinder for mining according to claim 1, characterized in that: The protective layer (51) is made of heat dissipation material, and the honeycomb holes (52) are filled with heat dissipation material. The oxygen cylinder body (1) has an air inlet (2) at the top.

5. A double-layer structure oxygen cylinder for mining according to claim 4, characterized in that: The two protective layers (51) are connected by a connecting post (53), and a bellows buffer layer (54) is provided between the two protective layers (51).

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