A pressure-resistant anti-explosion stainless steel gas cylinder

Abstract

The application discloses a pressure-resistant anti-explosion stainless steel gas cylinder and belongs to the technical field of stainless steel gas cylinders, which is characterized in that: the technical scheme comprises a gas cylinder, a cylinder valve is threadedly connected to the mouth of the gas cylinder, a limiting mechanism is arranged on the cylinder valve and used for fixing the position of the cylinder valve, the limiting mechanism comprises a flange A arranged on the cylinder valve, a moving plate is vertically and slidably arranged on the cylinder valve, two limiting rods are arranged on the moving plate, the moving plate and the flange A are connected through a plurality of reset springs, and a flange B is arranged at the neck of the gas cylinder, so that the radial pressure attenuation of the thread and the appearance of the microscopic gap of the sealing surface are avoided, gas leakage is eliminated, the working pressure of the gas cylinder is maintained stable, gas resource waste is prevented, the safety risk of the accumulation of combustible or combustion-supporting gas in the transportation closed space and the ignition and explosion are eliminated, and the reliability and safety of the gas cylinder in the transportation and carrying process are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of stainless steel gas cylinder technology, and in particular to a pressure-resistant and explosion-proof stainless steel gas cylinder. Background Technology

[0002] Stainless steel gas cylinders are mobile pressure vessels made primarily of stainless steel, used to hold various gases. They can be mainly classified into two types based on their structure: seamless cylinders and welded cylinders. Both must comply with relevant mandatory Chinese standards, such as GB / T5099.4-2017, which applies to seamless stainless steel cylinders with a nominal working pressure not exceeding 30 MPa and a nominal volume not exceeding 150 L, and GB / T [other standards], which applies to welded stainless steel cylinders with a hydrostatic test pressure not exceeding 6.0 MPa (gauge pressure) and a nominal volume of 0.5 L to 1000 L. 32566-2016: This type of gas cylinder can be used safely in ambient temperatures ranging from -40℃ to 60℃. It is specifically designed for storing compressed gases, low-pressure liquefied gases, or dissolved gases, such as oxygen, nitrogen, carbon dioxide, as well as industrial and energy gases such as ethylene, propylene, butadiene, and natural gas. Its stainless steel material has superior cleanliness and corrosion resistance, which can effectively prevent gas from being contaminated during storage, thereby ensuring gas purity. It is widely used in industries with high requirements for gas purity, such as machinery, electronics, chemicals, medical, and food.

[0003] Pressure-resistant and explosion-proof stainless steel gas cylinders refer to a type of stainless steel pressure vessel specifically designed for the safe storage of gases under high pressure environments, manufactured using high-standard design, high-quality materials, and strict processes. Their main technical standards include GB / T 5099.4-2017 "Seamless Steel Gas Cylinders Part 4: Seamless Stainless Steel Gas Cylinders," applicable to nominal working pressures not exceeding 30 MPa and nominal volumes not exceeding 150 L; and GB / T 32566.2-2025 "Welded Stainless Steel Gas Cylinders Part 2: Gas Cylinders with Test Pressures Greater Than 6 MPa," applicable to hydrostatic test pressures greater than 6 MPa (gauge pressure) and nominal volumes ranging from 0.5 L to 150 L. The stainless steel material (such as 304 or 316L) of these cylinders possesses high strength, corrosion resistance, and good fatigue resistance, effectively withstanding the high-pressure impact of gases. During manufacturing, precise wall thickness calculations, safety factor settings, welding process control, and non-destructive testing ensure the structural integrity of the cylinders. Meanwhile, its design follows strict burst safety factor requirements. For example, the minimum burst safety factor for seamless stainless steel gas cylinders is 2.4, and the minimum burst safety factor for welded stainless steel gas cylinders is 3.4. They are also usually equipped with safety pressure relief devices, which further ensures safe use and makes them widely applicable to mechanical, electronic, chemical and medical fields with strict requirements for gas purity and storage safety.

[0004] In existing pressure-resistant and explosion-proof stainless steel gas cylinders, the valves and cylinder bodies generally use pipe thread connections. When tightened, these threads rely on the conical surface fit to generate significant radial pressure, causing the internal and external threads to fit tightly together, thus forming a direct metal-to-metal seal. However, during the actual transportation and handling of gas cylinders, continuous external vibration and repeated impacts inevitably act on the threaded connection pair, causing it to rotate slightly relative to each other. As vibration and impact accumulate, the radial pressure between the threads gradually decreases, and the sealing surface originally maintained by the tight metal fit begins to show microscopic gaps. Once the high-pressure gas inside the cylinder escapes along these gaps, it will lead to leakage. If the high-pressure gas inside the cylinder continues to leak out, the working pressure will drop rapidly, failing to meet the intended usage requirements and wasting gas resources. At the same time, if the leaked gas is a flammable or combustible gas (such as hydrogen or oxygen), it is easy to accumulate in the confined space during transportation, forming an explosive mixture that may ignite and explode upon impact or static electricity.

[0005] The purpose of this invention is to provide a pressure-resistant, explosion-proof stainless steel gas cylinder to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a pressure-resistant, explosion-proof stainless steel gas cylinder to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pressure-resistant and explosion-proof stainless steel gas cylinder, comprising a gas cylinder, wherein a cylinder valve is threadedly connected to the cylinder mouth;

[0008] The bottle valve is provided with a limit mechanism for fixing the position of the bottle valve;

[0009] The limiting mechanism includes a flange A mounted on the bottle valve, a movable plate slidably mounted vertically on the bottle valve, two limiting rods mounted on the movable plate, and the movable plate connected to the flange A by multiple return springs;

[0010] A flange B is provided at the neck of the gas cylinder, and multiple limiting holes are provided on the flange B.

[0011] A fixing mechanism is provided at the neck of the gas cylinder to lock the position of the two limiting rods.

[0012] The fixing mechanism includes a support plate installed at the neck of the gas cylinder, a slide rail on the support plate, a fixing rod slidably connected in the slide rail, a screw on the support plate, the screw passing through the fixing rod and being threaded, and fixing holes in both limiting rods.

[0013] After the cylinder valve is threadedly connected to the gas cylinder, a double-layered self-locking washer is provided between flange A and flange B to provide a continuous axial preload at the threaded connection between the cylinder valve and the gas cylinder, so as to prevent the threads from loosening and the sealing pressure from dropping due to vibration.

[0014] After the bottleneck is connected to the gas cylinder by threads, each of the reset springs drives the moving plate to move the two limiting rods downward and insert them into the corresponding limiting holes to limit the rotation of the cylinder valve relative to the gas cylinder, ensuring the stability of the threaded connection between the gas cylinder and the cylinder valve, so as to avoid loosening and leakage due to vibration.

[0015] After the two limiting rods are inserted into the corresponding limiting holes, the fixing rod is driven to slide along the slide rail by rotating the screw, so that the two ends of the fixing rod are respectively inserted into the fixing holes of the two limiting rods to lock the position of the limiting rods, so as to prevent the limiting rods from falling out due to vibration and losing their limiting function, thereby further preventing the threaded connection from loosening and leaking.

[0016] Furthermore, the fixing rod is provided with a latching mechanism for simultaneously locking flange A and flange B when the fixing rod moves laterally;

[0017] The buckling mechanism includes a buckle plate mounted on a fixed rod. Both flange A and flange B have buckle grooves. After flange A and flange B are threaded together, the buckle groove on flange A is aligned with the buckle groove on flange B.

[0018] When the fixing rod moves laterally, it drives the buckle plate to move towards the buckle groove until the buckle plate is fully inserted into the two buckle grooves, which is used to circumferentially lock the flange A and the flange B to prevent the threads from loosening and leaking due to relative rotation caused by vibration.

[0019] Furthermore, the two limiting rods are symmetrically arranged on the movable plate to ensure that the force is uniform when the two limiting rods are inserted into the corresponding limiting holes, thereby improving the stability and vibration resistance of the limiting mechanism and further preventing thread loosening and leakage caused by vibration.

[0020] Furthermore, each of the reset springs is arranged at equal angles and distances to ensure that the moving plate is subjected to uniform force during downward movement, preventing the moving plate from tilting or jamming due to uneven loading. This ensures that the two limiting rods can be inserted into the corresponding limiting holes synchronously and smoothly, thereby improving the reliability of the limiting mechanism and its anti-vibration and anti-loosening effects.

[0021] Furthermore, the slide rail is convex to secure the fixing rod within it, thereby preventing the fixing rod from detaching from the support plate during sliding.

[0022] Furthermore, the bottle valve is provided with a conduit and a valve stem, which are used to control the opening and closing of the bottle valve by rotation, so as to realize the filling or release of gas.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. This invention utilizes a limiting mechanism on the cylinder valve and a fixing mechanism on the gas cylinder. After the cylinder neck is threadedly connected to the gas cylinder, a return spring drives a moving plate to insert two limiting rods downward into corresponding limiting holes, thereby limiting the rotation of the cylinder valve relative to the gas cylinder and preventing loosening and leakage due to vibration. Subsequently, the rotating screw drives the fixing rod to slide along the slide rail, so that its two ends are respectively inserted into the fixing holes of the two limiting rods, locking the position of the limiting rods and preventing them from coming out, further ensuring the anti-loosening effect. It can effectively constrain the relative rotation between the cylinder valve and the gas cylinder by inserting the limiting rods into the limiting holes in the limiting mechanism, eliminating the thread micro-rotation caused by vibration from the root. At the same time, the fixing mechanism locks the limiting rods to ensure that their limiting effect is continuously effective, thereby avoiding the radial pressure attenuation of the thread and the appearance of micro gaps in the sealing surface, preventing gas leakage, maintaining the stable working pressure of the gas cylinder, preventing the waste of gas resources, eliminating the safety risk of combustion and explosion caused by the accumulation of flammable or combustible gases in the closed transport space, and significantly improving the reliability and safety of the gas cylinder during transportation and handling.

[0025] 2. This invention utilizes a snap-fit ​​mechanism mounted on a fixed rod. When the fixed rod moves laterally, it drives the snap plate to move into the snap groove until the snap plate is fully inserted into the two snap grooves. This is used to circumferentially lock flange A and flange B, preventing thread loosening and leakage caused by relative rotation due to vibration. It effectively prevents relative rotation between the cylinder valve and the gas cylinder caused by vibration, thereby avoiding radial pressure attenuation of the threads and the appearance of microscopic gaps on the sealing surface, eliminating gas leakage. This design can maintain stable working pressure of the gas cylinder, prevent waste of gas resources, and eliminate the risk of combustion and explosion caused by the accumulation of flammable or combustible gases in the sealed transportation space. It forms a double lock with the limiting mechanism, greatly improving the reliability of the gas cylinder's vibration resistance and anti-loosening. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the movable plate in this invention;

[0029] Figure 3 This is a schematic diagram of the structure of flange B in this invention;

[0030] Figure 4 This is a schematic diagram of the structure of the fixing rod in this invention;

[0031] Figure 5 This is a schematic diagram of the bottle valve in this invention;

[0032] Figure 6 This is a schematic diagram of the limiting rod in this invention;

[0033] Figure 7 This is a schematic diagram of the slide rail structure in this invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] In the picture:

[0036] 1. Gas cylinder; 2. Cylinder valve; 3. Conduit; 4. Valve stem; 5. Limiting mechanism; 501. Moving plate; 502. Limiting rod; 503. Return spring; 504. Flange B; 505. Limiting hole; 506. Flange A; 6. Fixing mechanism; 601. Support plate; 602. Slide rail; 603. Fixing rod; 604. Screw; 605. Fixing hole; 7. Snap-fit ​​mechanism; 701. Snap plate; 702. Snap groove; 8. Double-layered self-locking washer. Detailed Implementation

[0037] 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 may 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.

[0038] 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.

[0039] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0040] Please see Figures 1 to 7 As shown, the present invention provides a pressure-resistant and explosion-proof stainless steel gas cylinder, including a gas cylinder 1, and a cylinder valve 2 is threadedly connected to the mouth of the gas cylinder 1.

[0041] A limit mechanism 5 is provided on the bottle valve 2 to fix the position of the bottle valve 2;

[0042] The limiting mechanism 5 includes a flange A506 mounted on the bottle valve 2, a movable plate 501 vertically slidably mounted on the bottle valve 2, two limiting rods 502 mounted on the movable plate 501, and the movable plate 501 and the flange A506 connected by multiple return springs 503.

[0043] A flange B504 is provided at the neck of gas cylinder 1, and multiple limit holes 505 are provided on flange B504;

[0044] A fixing mechanism 6 is provided at the neck of gas cylinder 1 to lock the position of the two limit rods 502.

[0045] The fixing mechanism 6 includes a support plate 601 set at the neck of the gas cylinder 1, a slide rail 602 is provided on the support plate 601, a fixing rod 603 is slidably connected in the slide rail 602, a screw 604 is provided on the support plate 601, the screw 604 passes through the fixing rod 603 and is threadedly connected, and fixing holes 605 are provided in both limiting rods 502.

[0046] After the cylinder valve 2 is threadedly connected to the gas cylinder 1, a double-layer self-locking washer 8 is installed between flange A506 and flange B504 to provide continuous axial preload at the threaded connection between the cylinder valve 2 and the gas cylinder 1, so as to prevent the threads from loosening and the sealing pressure from dropping due to vibration. The double-layer self-locking washer 8 is composed of two washers with wedge-shaped helical teeth. The radial ridges on the outer side of the washer are embedded in the nut and the surface of the connected parts when tightened to form a fixed fulcrum. When subjected to vibration, the helical teeth on the inner side of the two washers are offset relative to each other. Since the wedge angle is greater than the thread helix angle, the offset forces the washer to expand along the thickness direction, thereby dynamically increasing the axial clamping force (i.e., preload) of the bolt, so as to achieve the self-locking effect of the stronger the vibration, the tighter the lock.

[0047] After the bottleneck is threadedly connected to the gas cylinder 1, each return spring 503 drives the moving plate 501 to move the two limit rods 502 downward and insert them into the corresponding limit holes 505 to limit the rotation of the cylinder valve 2 relative to the gas cylinder 1, ensuring the stability of the threaded connection between the gas cylinder 1 and the cylinder valve 2, so as to avoid loosening and leakage due to vibration.

[0048] After the two limiting rods 502 are inserted into the corresponding limiting holes 505, the fixed rod 603 is driven to slide along the slide rail 602 by rotating the screw 604, so that the two ends of the fixed rod 603 are respectively inserted into the fixing holes 605 of the two limiting rods 502 to lock the position of the limiting rods 502, so as to prevent the limiting rods 502 from coming out due to vibration and losing their limiting function, thereby further preventing the threaded connection from loosening and leaking.

[0049] It is used to directly constrain the relative rotation between the cylinder valve 2 and the gas cylinder 1 by inserting the limiting rod 502 in the limiting mechanism 5 into the limiting hole 505, thereby eliminating the thread micro-rotation caused by vibration from the root. At the same time, the fixing mechanism 6 locks the limiting rod 502 to ensure that its limiting effect is continuously effective, thereby avoiding the radial pressure attenuation of the thread and the appearance of micro gaps in the sealing surface, preventing gas leakage, maintaining the stable working pressure of the gas cylinder 1, preventing the waste of gas resources, eliminating the safety risk of combustion and explosion caused by the accumulation of flammable or combustible gases in the closed space during transportation, and significantly improving the reliability and safety of the gas cylinder 1 during transportation and handling.

[0050] The fixed rod 603 is provided with a latching mechanism 7, which is used to lock flange A506 and flange B504 simultaneously when the fixed rod 603 moves laterally;

[0051] The snap-fit ​​mechanism 7 includes a snap plate 701 set on the fixed rod 603. Both flange A506 and flange B504 are provided with snap grooves 702. After flange A506 and flange B504 are threaded together, the snap groove 702 on flange A506 is aligned with the snap groove 702 on flange B504.

[0052] When the fixing rod 603 moves laterally, it drives the buckle plate 701 to move into the buckle groove 702 until the buckle plate 701 is fully inserted into the two buckle grooves 702. This is used to lock the flange A506 and the flange B504 circumferentially to prevent the relative rotation of the two due to vibration, which could cause the threads to loosen and leak.

[0053] It is used to fundamentally prevent the relative rotation between the cylinder valve 2 and the gas cylinder 1 caused by vibration, thereby avoiding the radial pressure attenuation of the thread and the appearance of micro gaps in the sealing surface, eliminating gas leakage. This design can maintain the stable working pressure of the gas cylinder 1, prevent the waste of gas resources, and at the same time eliminate the risk of combustion and explosion caused by the accumulation of combustible or combustible gases in the closed transport space. It forms a double lock with the limit mechanism 5, which greatly improves the reliability of the gas cylinder 1 in resisting vibration and loosening.

[0054] Two limiting rods 502 are symmetrically arranged on the moving plate 501 to ensure that the force is even when the two limiting rods 502 are inserted into the corresponding limiting holes 505, so as to improve the stability and anti-vibration and anti-loosening of the limiting mechanism 5, thereby further avoiding thread loosening and leakage caused by vibration, and enhancing the sealing reliability of the gas cylinder 1 during transportation and handling.

[0055] Each reset spring 503 is set at equal angles and distances to ensure that the moving plate 501 is subjected to uniform force during downward movement, preventing the moving plate 501 from tilting or jamming due to uneven load. This ensures that the two limit rods 502 can be inserted into the corresponding limit holes 505 synchronously and smoothly, thereby improving the reliability and anti-vibration and anti-loosening effect of the limit mechanism 5. It can significantly improve the reliability and anti-vibration and anti-loosening effect of the limit mechanism 5, ensuring that the threaded connection is not easy to loosen or leak under continuous vibration.

[0056] The slide rail 602 is convex and is used to snap the fixed rod 603 into the slide rail 602 to prevent the fixed rod 603 from detaching from the support plate 601 during sliding. It is used to form a snap-fit ​​with the fixed rod 603 to limit the vertical displacement of the fixed rod 603 and prevent the fixed rod 603 from coming out of the slide rail 602 during lateral sliding. This ensures that the fixed rod 603 always moves smoothly along the predetermined track, improving the stability and reliability of the mechanism operation.

[0057] The bottle valve 2 is equipped with a conduit 3 and a valve stem 4, which are used to control the opening and closing of the bottle valve 2 by rotation to realize the filling or release of gas. It is flexible in operation, reliable in opening and closing, can accurately adjust the gas flow rate, and ensure a reliable seal in the closed state to prevent accidental gas leakage.

[0058] Working principle: After the bottleneck is connected to the gas cylinder 1 by the thread, each return spring 503 drives the moving plate 501 to move the two limit rods 502 downward and insert them into the corresponding limit holes 505 to limit the rotation of the cylinder valve 2 relative to the gas cylinder 1, ensuring the stability of the threaded connection between the gas cylinder 1 and the cylinder valve 2, so as to avoid loosening and leakage due to vibration.

[0059] After the two limiting rods 502 are inserted into the corresponding limiting holes 505, the fixed rod 603 is driven to slide along the slide rail 602 by rotating the screw 604, so that the two ends of the fixed rod 603 are respectively inserted into the fixing holes 605 of the two limiting rods 502 to lock the position of the limiting rods 502, so as to prevent the limiting rods 502 from coming out due to vibration and losing their limiting function, thereby further preventing the threaded connection from loosening and leaking.

[0060] When the fixing rod 603 moves laterally, it drives the buckle plate 701 to move into the buckle groove 702 until the buckle plate 701 is fully inserted into the two buckle grooves 702. This is used to circumferentially lock the flange A506 and the flange B504 to prevent the threads from loosening and leaking due to relative rotation caused by vibration.

[0061] 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.

[0062] 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 pressure-resistant, explosion-proof stainless steel gas cylinder, characterized in that: Includes a gas cylinder (1), and a cylinder valve (2) is threadedly connected to the mouth of the gas cylinder (1); A limit mechanism (5) is provided on the bottle valve (2) for fixing the position of the bottle valve (2); The limiting mechanism (5) includes a flange A (506) disposed on the bottle valve (2), a movable plate (501) is vertically slidably disposed on the bottle valve (2), and two limiting rods (502) are disposed on the movable plate (501). The movable plate (501) and the flange A (506) are connected by multiple return springs (503). The gas cylinder (1) is provided with a flange B (504) at the neck, and the flange B (504) is provided with a plurality of limiting holes (505). The gas cylinder (1) is provided with a fixing mechanism (6) at the bottleneck, which is used to lock the position of the two limiting rods (502); The fixing mechanism (6) includes a support plate (601) set at the bottleneck of the gas cylinder (1), a slide rail (602) is provided on the support plate (601), a fixing rod (603) is slidably connected in the slide rail (602), a screw (604) is provided on the support plate (601), the screw (604) passes through the fixing rod (603) and is threaded, and fixing holes (605) are provided in both limiting rods (502). After the cylinder valve (2) is threadedly connected to the gas cylinder (1), a double-layer self-locking washer (8) is provided between the flange A (506) and the flange B (504) to provide a continuous axial preload at the threaded connection between the cylinder valve (2) and the gas cylinder (1) to prevent the threads from loosening and the sealing pressure from dropping due to vibration. After the bottleneck is threadedly connected to the gas cylinder (1), each of the reset springs (503) drives the moving plate (501) to move the two limiting rods (502) downward and insert them into the corresponding limiting holes (505) to limit the rotation of the cylinder valve (2) relative to the gas cylinder (1), ensuring the stability of the threaded connection between the gas cylinder (1) and the cylinder valve (2) to avoid loosening and leakage due to vibration. After the two limiting rods (502) are inserted into the corresponding limiting holes (505), the fixing rod (603) is driven to slide along the slide rail (602) by rotating the screw (604), so that the two ends of the fixing rod (603) are respectively inserted into the fixing holes (605) of the two limiting rods (502) to lock the position of the limiting rods (502), and prevent the limiting rods (502) from coming out due to vibration and losing their limiting function, thereby further preventing the threaded connection from loosening and leaking.

2. The pressure-resistant and explosion-proof stainless steel gas cylinder according to claim 1, characterized in that: The fixing rod (603) is provided with a latching mechanism (7) for simultaneously locking the flange A (506) and the flange B (504) when the fixing rod (603) moves laterally. The buckling mechanism (7) includes a buckle plate (701) set on the fixed rod (603). Both flange A (506) and flange B (504) are provided with buckle grooves (702). After flange A (506) and flange B (504) are threadedly connected, the buckle groove (702) on flange A (506) is aligned with the buckle groove (702) on flange B (504). When the fixing rod (603) moves laterally, it drives the buckle plate (701) to move toward the buckle groove (702) until the buckle plate (701) is fully inserted into the two buckle grooves (702), which is used to circumferentially lock the flange A (506) and the flange B (504) to avoid loosening and leakage of the threads caused by relative rotation due to vibration.

3. The pressure-resistant and explosion-proof stainless steel gas cylinder according to claim 1, characterized in that: The two limiting rods (502) are symmetrically arranged on the moving plate (501) to ensure that the two limiting rods (502) are evenly stressed when inserted into the corresponding limiting holes (505), so as to improve the stability and anti-vibration of the limiting mechanism (5) and further avoid thread loosening and leakage caused by vibration.

4. The pressure-resistant and explosion-proof stainless steel gas cylinder according to claim 1, characterized in that: Each of the reset springs (503) is set at equal angles and distances to ensure that the moving plate (501) is subjected to uniform force during downward movement, and to prevent the moving plate (501) from tilting or jamming due to uneven load. This ensures that the two limiting rods (502) can be inserted into the corresponding limiting holes (505) synchronously and smoothly, thereby improving the reliability and anti-vibration and anti-loosening effect of the limiting mechanism (5).

5. The pressure-resistant and explosion-proof stainless steel gas cylinder according to claim 1, characterized in that: The slide rail (602) is convex and is used to fasten the fixing rod (603) inside the slide rail (602) to prevent the fixing rod (603) from detaching from the support plate (601) during sliding.

6. The pressure-resistant and explosion-proof stainless steel gas cylinder according to claim 1, characterized in that: The bottle valve (2) is provided with a conduit (3) and a valve stem (4), which is used to control the opening and closing of the bottle valve (2) by rotation, so as to realize the filling or release of gas.

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