High-pressure oxygen storage and supply device

Abstract

The utility model provides a high-pressure oxygen storage and supply device, the pipe part of a cable penetrating pipe penetrates through a composite gas cylinder and is connected with the inner circumferences of a head-end bottle mouth and a tail-end bottle mouth of the composite gas cylinder in a tightly abutting manner through a sealing piece, the cap part of the cable penetrating pipe is connected with the tail-end bottle mouth in a fastening manner through a locking piece, and a cable is arranged on the inner side of the head-end bottle mouth of the composite gas cylinder. A plurality of flow guide pipes are uniformly arranged around the cable penetrating pipe in the axial direction of the composite gas cylinder and are connected with the annular flow channel on the bottle mouth at the head end, a plurality of gas passing openings communicated with inner cavities of the flow guide pipes are formed in the peripheries of the flow guide pipes, and the two ends of the composite gas cylinder are connected with the skirt edges in a clamped and embedded mode; cabin section connecting through holes are formed in cabin section connecting ends, used for connecting the front cabin and the rear cabin, of the skirt edges; according to the device, reasonable area division of the cable penetrating pipe and the flow guide pipe and scientific space layout are achieved, the overall sealing performance is considered, in addition, through the design of the skirt edge, the device can serve as a functional component to provide a high-pressure gas source for a whole underwater device power system, and the device can also serve as a cabin section structure to be used.

Description

Technical Field

[0001] The utility model relates to the technical field of storing and supplying high-pressure oxygen, in particular to a high-pressure oxygen storage and supply device. Background Art

[0002] In the prior art, a hyperbaric oxygen device is used in the power system of an underwater device as a source of pure oxygen supply. A composite gas cylinder is used as an oxygen storage container. The composite gas cylinder is also used as a structural compartment of the underwater device. Both ends of the composite gas cylinder are connected to the front and rear compartments through a sealed connection structure and are sealed. A high-pressure resistant metal conduit is provided at the axial middle position of the composite gas cylinder and passes through the composite gas cylinder to serve as a bottle-threading channel for the cable. A flow guide tube connected to an external inlet and exhaust pipe is provided in the inner cavity of the composite gas cylinder to serve as inflation and exhaust. Furthermore, the composite gas cylinder as a structural compartment of the underwater device is connected to the front and rear compartments at both ends through a connecting structure.

[0003] However, the following problems still exist in the actual use of the hyperbaric oxygen device:

[0004] 1. Most systems use a single flow guide tube, and the tube opening is directly facing the axial inner bottom of the composite gas cylinder. This design causes high-pressure oxygen to flow directly to the inner bottom of the composite gas cylinder for a long time when the composite gas cylinder is filled with high-pressure oxygen, thereby reducing the service life of the composite gas cylinder. In addition, the high flow rate also accelerates the temperature rise inside the composite gas cylinder, posing a safety hazard to the entire high-pressure oxygen device.

[0005] 2. The integration of cable conduit, flow guide tube and composite gas cylinder is low, and the overall structure occupies a large space;

[0006] 3. Composite gas cylinders are typically placed within the structural compartment. Composite gas cylinders embedded within the metal skirt that serves as the compartment body have not yet been used. While directly constructing connection structures at both ends of the composite gas cylinder can achieve connection with the front and rear compartment sections, there are design and molding process issues regarding the strength of the connection between the metal skirt and the composite material, as well as the overall load-bearing capacity of the composite gas cylinder.

[0007] 4. This device can be used as a functional component to store and supply high-pressure gas for the entire underwater device power system, and can also be used as a compartment structure. Utility Model Content

[0008] In view of this, the problem to be solved by the present invention is to provide a high-pressure oxygen storage and supply device.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0010] A high-pressure oxygen storage and supply device, wherein the tube portion of the cable tube passes through a composite gas cylinder and is tightly connected to the inner circumference of the first end bottle mouth and the tail end bottle mouth of the composite gas cylinder through a seal, and the cap portion of the cable tube is tightly connected to the tail end bottle mouth through a locking piece. On the inner side of the first end bottle mouth of the composite gas cylinder, a plurality of guide tubes are evenly arranged around the cable tube along the axial direction of the composite gas cylinder and are connected to the annular flow channel on the first end bottle mouth, a plurality of air ports connected to the inner cavity of the guide tube are provided on the outer circumference of the guide tube, and both ends of the composite gas cylinder are snap-connected to the skirt, and a cabin section connection through-hole is provided on the cabin section connecting end of the skirt for connecting the front and rear cabins.

[0011] The sealing member is a sealing ring, and the inner circumferences of the first end bottle mouth and the tail end bottle mouth are both constructed with embedding grooves corresponding to the sealing rings; the locking member is a threaded pressure ring, and the inner circumference of the tail end bottle mouth is constructed with a reverse thread that matches the threaded pressure ring.

[0012] An annular groove is constructed on the bottle mouth at the head end and is sunken along the axial direction of the composite gas cylinder. An axial sealing ring plate is fixed at the top opening of the annular groove and encloses the annular groove to form the annular flow channel.

[0013] A first air hole is constructed on the side wall of the annular groove, and a second air hole is constructed on the bottom of the annular groove; the annular groove is connected to the intake and exhaust pipes through the first air hole, and is fixedly connected to the guide pipe through the second air hole.

[0014] The guide pipe is designed as a cylindrical structure, and a filter cover is sleeved on the closed end of the guide pipe, and the filter cover covers the air outlet.

[0015] The gas cylinder connecting end on the skirt for sleeve connection of the composite gas cylinder is a comb-shaped structure with uniformly distributed deformation gaps, and the transverse cross-sectional area of ​​the gas cylinder connecting end decreases in the direction approaching the composite gas cylinder.

[0016] An inner liner positioning column is constructed on the outer circumference of the composite gas cylinder, and an annular inner concave embedding groove corresponding to the inner liner positioning column is constructed on the inner circumference of the skirt.

[0017] The advantages and positive effects of the utility model are:

[0018] (1) The uniform arrangement of several flow guide tubes in the composite gas cylinder makes the composite gas uniformly pressurized during inflation, and the radial gas inlet arrangement allows the high-pressure oxygen to diffuse uniformly from the radial direction of the composite gas cylinder to the interior of the composite gas cylinder during inflation, thereby controlling the direction and velocity of the airflow during the inflation and deflation process, thereby controlling the temperature rise of the composite gas cylinder and improving the overall safety.

[0019] (2) The tube portion passes through the composite gas cylinder and is tightly connected to the inner periphery of the first end bottle mouth and the tail end bottle mouth of the composite gas cylinder through the sealing member. The two ends of the cap portion are tightly connected to the step platform and the locking member respectively. Then, the step platform and the locking member clamp the cap portion to play an axial limiting role for the cable passing through the tube. On the premise of ensuring the sealing, it can also prevent the cable passing through the tube from being separated from the composite gas cylinder.

[0020] (3) The front and rear compartments are connected by adding skirts, and the skirts and the composite gas cylinders are connected by snap-fitting, which not only meets the connection requirements of the front and rear compartments and the composite gas cylinders, but also does not destroy the integrity of the composite gas cylinders, thus ensuring the overall strength of the composite gas cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0022] In the attached figure:

[0023] Figure 1 It is a cross-sectional view of a high-pressure oxygen storage and supply device;

[0024] Figure 2 yes Figure 1 A magnified view of the bottle mouth at the first end;

[0025] Figure 3 yes Figure 1 A magnified view of the bottle mouth at the end;

[0026] Figure 4 This is an enlarged view of the bottle mouth at the head end after the axial sealing ring plate and the cable tube are hidden;

[0027] Figure 5 It is an overall structural diagram of a high-pressure oxygen storage and supply device with hidden skirt;

[0028] Figure 6 It is an overall structural diagram of a high-pressure oxygen storage and supply device;

[0029] Figure 7 This is a structural diagram of the skirts connected at both ends of the composite gas cylinder;

[0030] Figure 8 This is an enlarged view of the compartment connection perforation on the compartment connection end;

[0031] Figure 9 This is a structural diagram of the skirt;

[0032] Figure 10 It is an enlarged view of the concave groove of the skirt in the ring;

[0033] Figure 11 yes Figure 1Structural diagram of hiding one end of the skirt;

[0034] Figure 12 This is an enlarged view of the inner tank positioning column;

[0035] In the figure: cable conduit 1, pipe part 11, cap part 12, gas cylinder connection end 14, compartment connection end 15, compartment connection through-hole 16, groove 17, skirt 18, deformation gap 19, composite gas cylinder 2, embedded groove 21, stepped platform 22, annular groove 23, second air hole 24, axial sealing ring plate 25, guide pipe 26, air port 261, liner positioning column 27, filter cover 29, sealing gasket 31, threaded pressure ring 32, sealing ring 33, intake and exhaust pipe 41, annular inner concave embedded groove 28, second-order composite layer 52. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] like Figures 1 to 5As shown, the utility model provides a high-pressure oxygen storage and supply device, the transverse cross-section of the cable tube 1 is a T-shaped structure, including a tube portion 11 and a cap portion 12 constructed on the end side of the tube portion 11, the tube portion 11 passes through the composite gas cylinder 2 and is tightly connected to the inner circumference of the head end bottle mouth and the tail end bottle mouth of the composite gas cylinder 2 through a sealing member, thereby achieving a seal between the tube portion 11 and the head end bottle mouth and the tail end bottle mouth, a step platform 22 is constructed in the tail end bottle mouth of the composite gas cylinder 2, and the two ends of the cap portion 12 are tightly connected to the step platform 22 and the locking member respectively, and the locking member is detachably connected to the inner circumference of the tail end bottle mouth of the composite gas cylinder 2, and then the cable tube 1 is axially limited by clamping the step platform 22 and the locking member against the cap portion 12, so as to prevent the cable tube 1 from detaching from the composite gas cylinder 2 while ensuring the sealing performance;

[0040] On the inner side of the nozzle of the first end of the composite gas cylinder 2, a plurality of guide tubes 26 are evenly arranged around the cable tube 1 along the axial direction of the composite gas cylinder 2 and are connected to the annular flow channel on the nozzle of the first end. The annular flow channel is also connected to the inlet and exhaust pipes 41 located outside the composite gas cylinder 2. The guide tube 26 is a cylindrical structure. A plurality of gas ports 261 connected to the inner cavity of the guide tube 26 are opened on the outer periphery of the guide tube 26, thereby realizing high-pressure oxygen entering and exiting the composite gas cylinder 2 through the inlet and exhaust pipes 41, the annular flow channel, and the plurality of guide tubes 26;

[0041] The cable conduit 1 is arranged at the axial center of the composite gas cylinder 2, and a plurality of flow guide tubes 26 are evenly arranged around the cable conduit 1, so that the plurality of flow guide tubes 26 can be evenly arranged in the composite gas cylinder 2, so that the interior of the composite gas cylinder 2 is evenly pressurized during inflation. Compared with the existing design of a single flow guide tube, the design of multiple groups of flow guide tubes 26 can evenly supply gas to the composite gas cylinder 2 and reduce the flow rate of high-pressure oxygen, thereby avoiding excessive temperature rise inside the composite gas cylinder 2. The setting of the gas port 261 can make the high-pressure oxygen uniformly diffuse from the radial direction of the composite gas cylinder 2 to the interior of the composite gas cylinder 2 during inflation, thereby controlling the direction and flow rate of the airflow during the inflation and deflation process, thereby controlling the temperature rise change of the composite gas cylinder 2 and improving the overall safety.

[0042] like Figures 6 to 12As shown, the skirt 18 is tubular and is provided with two groups. The gas cylinder connecting end 14 of the skirt 18 for wearing the composite gas cylinder 2 is an elastically deformable structure, so that the skirt 18 can be worn to a position where it is embedded with the composite gas cylinder 2 to achieve the embedded connection between the front and rear ends of the composite gas cylinder 2 and the two groups of skirts 18. The cabin segment connecting end 15 of the skirt 18 is used to connect the front and rear cabins. The cabin segment connecting through-holes 16 are provided. Bolts are passed through the through-holes provided on the front and rear cabins and the cabin segment connecting through-holes 16 and then threadedly connected with nuts to achieve the connection between the skirt 18 and the front and rear cabins; the front and rear cabins are connected by adding the skirt 18, and the skirt 18 and the composite gas cylinder 2 are connected by an embedded connection method, which not only meets the connection requirements of the front and rear cabins and the composite gas cylinder 2, but also does not destroy the integrity of the composite gas cylinder 2, thereby ensuring the overall strength of the composite gas cylinder 2;

[0043] In order to solve the problem of pressure resistance of the entire oxygen storage and supply system in deep water after adding the skirt 18, the present solution also creatively proposes a two-stage fiber full winding structure, that is, a first-stage composite layer is coated on the outer periphery of the composite gas cylinder 2, and after the two ends of the composite gas cylinder 2 are connected to the skirt 18, a second-stage composite layer 52 is coated on the outer periphery of the first-stage composite layer and the gas cylinder connecting end 14 of the skirt 18; when winding, the cylindrical bottle body of the composite gas cylinder 2 is first circumferentially wrapped, and then the curved bottle end and the cylindrical bottle body of the composite gas cylinder 2 are spirally wrapped, and then the pressure resistance of the composite gas cylinder 2 is enhanced in the radial and axial directions by combining the circumferential and spiral directions, and then the second-stage composite layer 52 is circumferentially wrapped on the first-stage composite layer and the gas cylinder connecting end 14 of the skirt 18 to enhance the pressure resistance of the skirt 18 and the composite gas cylinder 2, thereby meeting the pressure resistance of the entire oxygen storage and supply system in deep water;

[0044] This device realizes the reasonable area division and scientific spatial layout of the cable conduit 1 and the plurality of guide tubes 26 while taking into account the overall sealing. In addition, through the design of the skirt 18, this device can be used as a functional component to provide a high-pressure gas source for the entire underwater device power system, and can also be used as a compartment structure.

[0045] Specifically, the sealing member is a sealing ring 33. During the process of injecting high-pressure oxygen into the composite gas cylinder 2, the composite gas cylinder 2 may be slightly deformed, and the design of the sealing ring 33 can adapt to the deformation of the composite gas cylinder 2 during the pressurization process, thereby ensuring sealing. The inner circumference of the head end bottle mouth and the tail end bottle mouth are both constructed with embedding grooves 21 corresponding to the sealing ring 33. In this embodiment, two groups of embedding grooves 21 are made on the head end bottle mouth, which are arranged in sequence along the axial direction of the cable through-tube 1, thereby playing a double sealing role. A group of embedding grooves 21 are provided on the tail end bottle mouth on the inner cavity side of the stepped platform 22 close to the composite gas cylinder 2, which also plays a double sealing role after the stepped platform 22 is tightly abutted against the cap 12.

[0046] Specifically, the locking member is a threaded pressure ring 32, and the inner circumference of the tail end bottle mouth is constructed with a reverse thread that is compatible with the threaded pressure ring 32, thereby achieving fastening and separation through threaded connection. A sealing gasket 31 is also installed between the cap 12 and the stepped platform 22, thereby ensuring the sealing of the connection between the cap 12 and the stepped platform 22.

[0047] Specifically, a filter cover 29 is mounted on the closed end of the guide tube 26 , and the filter cover 29 covers the gas outlet 261 . The filter cover 29 is used to filter impurity particles contained in the high-pressure oxygen to prevent them from entering the composite gas cylinder 2 with the high-pressure oxygen and causing damage to the composite gas cylinder 2 .

[0048] Specifically, a plurality of slots adapted to the guide tube 26 are constructed on the inner side of the first end of the bottle mouth of the composite gas cylinder 2, and the guide tube 26 is fixed in the slots.

[0049] Specifically, an annular groove 23 is constructed on the outer side of the first end of the bottle mouth of the composite gas cylinder 2, which is sunken along the axial direction of the composite gas cylinder 2. The axial sealing ring plate 25 is welded to the top opening of the annular groove 23 and thus encloses the annular flow channel with the annular groove 23. The annular flow channel is connected to the guide pipe 26, and then the high-pressure oxygen is uniformly transported to the guide pipe 26 connected thereto through the annular flow channel. A first air hole is constructed on the side wall of the annular groove 23, and a second air hole 24 is constructed on the bottom of the annular groove 23. The annular groove 23 is connected to the inlet and exhaust pipe 41 through the first air hole and is fixedly connected to the guide pipe 26 through the second air hole 24. The inlet and exhaust pipe 41 is connected to an inlet valve and an exhaust valve.

[0050] During inflation, the air inlet valve is opened, and high-pressure oxygen enters the annular flow channel through the air inlet and outlet pipes 41 via the first air hole, then enters the flow guide pipe 26 via the second air hole 24, and is discharged into the inner cavity of the composite gas cylinder 2 through the flow guide pipe 26;

[0051] When supplying air, the exhaust valve is opened, and high-pressure oxygen enters the cylindrical structure of the guide tube 26 through the air port 261. The high-pressure oxygen in each guide tube 26 is gathered in the annular flow channel through the second air hole 24 and discharged through the first air hole through the intake and exhaust pipe 41.

[0052] Specifically, an inner liner positioning column 27 is constructed on the outer periphery of the composite gas cylinder 2, and an annular inner concave groove 28 corresponding to the inner liner positioning column 27 is constructed on the inner periphery of the skirt 18;

[0053] When putting on the sleeve, the elastic property of the gas cylinder connection end 14 is utilized to make the bottom surface of the skirt 18 slide along the inner liner positioning column 27 until the positioning column 27 falls into the annular inner concave embedding groove 28, and the gas cylinder connection end 14 returns to the state before deformation, and the annular inner concave embedding groove 28 is tightly embedded in the positioning column 27, thereby realizing the connection between the composite gas cylinder 2 and the skirt 18.

[0054] Specifically, the gas cylinder connecting end 14 is a comb-shaped structure with uniformly distributed deformation gaps 19. The transverse cross-sectional area of ​​the gas cylinder connecting end 14 decreases in the direction approaching the composite gas cylinder 2. The inner diameter of the entire skirt 18 is smaller than the outer diameter. When the composite gas cylinder 2 is connected through the sleeve, the deformation gap 19 changes, thereby realizing the deformation of the gas cylinder connecting end 14.

[0055] Specifically, a groove 17 is constructed on the outer periphery of the skirt 18, and the groove 17 provides space for the connection and installation of bolts and nuts. The cabin section connection through-hole 16 is constructed in the axial direction of the skirt 18 and passes through the side wall of the groove 17 and is connected with the inner cavity of the groove 17. After the bolt passes through the through-holes opened on the front and rear cabins and the cabin section connection through-hole 16 on the skirt 18, the nut is threadedly connected in the groove 17, thereby achieving the fixation of the front and rear cabins and the skirt 18.

[0056] The working principle and working process of this utility model are as follows:

[0057] When installing the cable tube 1, first pass the tube 11 of the cable tube 1 through the composite gas cylinder 2 until the cap 12 abuts against the stepped platform 22, and the sealing ring 33 on the tube 11 is engaged with the embedded grooves 21 in the first and tail end bottle mouths, and then the threaded pressing ring 32 is threadedly connected to the inner circumference of the tail end bottle mouth, thereby achieving a tight connection between the threaded pressing ring 32, the cap 12, and the stepped platform 22, and fixing the cable tube 1 in the composite gas cylinder 2;

[0058] When installing the skirt 18, first coat the outer circumference of the composite gas cylinder 2 with a first-order composite layer, then align the gas cylinder connecting end 14 of the skirt 18 with the two ends of the composite gas cylinder 2 and put it through. When the composite gas cylinder 2 is put through, the deformation gap 19 changes, thereby realizing the deformation of the gas cylinder connecting end 14, so that the bottom surface of the skirt 18 slides along the inner liner positioning column 27 until the positioning column 27 falls into the annular inner concave embedding groove 28 on the inner circumference of the skirt 18, and the gas cylinder connecting end 14 returns to the state before deformation. The annular inner concave embedding groove 28 is tightly embedded in the positioning column 27 to achieve the fixation of the composite gas cylinder 2 and the skirt 18, and then coat the outer circumference of the first-order composite layer and the gas cylinder connecting end 14 of the skirt 18 with a second-order composite layer 52, finally use bolts to penetrate the through holes opened on the front and rear cabins and the cabin section connection through holes 16 on the skirt 18, and thread the nuts in the grooves 17 to achieve the fixation of the front and rear cabins and the skirt 18;

[0059] When high-pressure oxygen needs to be filled, the air inlet valve connected to the air inlet and exhaust pipe 41 is opened, and the high-pressure oxygen passes through the air inlet and exhaust pipe 41 through the first air hole into the annular flow channel, then passes through the second air hole 24 into the guide pipe 26, and is discharged into the inner cavity of the composite gas cylinder 2 through the guide pipe 26;

[0060] When high-pressure oxygen needs to be filled, the outlet valve connected to the inlet and exhaust pipes 41 is opened. Under the action of high pressure, the high-pressure oxygen is discharged through the guide pipe 26, the annular flow channel, and the inlet and exhaust pipes 41 in sequence.

[0061] The above embodiments of the present invention are described in detail. However, the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A high-pressure oxygen storage and supply device, characterized in that: The pipe portion (11) of the cable threading tube (1) passes through the composite gas cylinder (2) and is tightly connected to the inner periphery of the first end bottle mouth and the tail end bottle mouth of the composite gas cylinder (2) through a sealing member. On the inner side of the first end bottle mouth of the composite gas cylinder (2), a plurality of flow guide tubes (26) are evenly arranged around the cable threading tube (1) along the axial direction of the composite gas cylinder (2) and are connected to the annular flow channel on the first end bottle mouth. A plurality of air holes (261) connected to the inner cavity of the flow guide tube (26) are provided on the outer periphery of the flow guide tube (26). The two ends of the composite gas cylinder (2) are connected to the skirt (18) by snap-fitting. The outer periphery of the composite gas cylinder (2) is covered with a first-order corrosion-resistant composite layer, and the first-order composite layer and the outer periphery of the gas cylinder connection end (14) are covered with a second-order composite layer (52).

2. A high-pressure oxygen storage and supply device according to claim 1, characterized in that: The sealing member is a sealing ring (33), and an embedding groove (21) corresponding to the sealing ring (33) is constructed on the inner periphery of the bottle mouth at the head end and the bottle mouth at the tail end.

3. A high-pressure oxygen storage and supply device according to claim 1, characterized in that: An annular groove (23) is constructed on the head end bottle mouth and is sunken along the axial direction of the composite gas cylinder (2). An axial sealing ring plate (25) is fixed at the top opening of the annular groove (23) and encloses the annular flow channel with the annular groove (23).

4. A high-pressure oxygen storage and supply device according to claim 3, characterized in that: A first air hole is constructed on the side wall of the annular groove (23), and a second air hole is constructed on the bottom of the annular groove (23); the annular groove (23) is connected to the intake and exhaust pipes (41) through the first air hole, and is fixedly connected to the guide pipe (26) through the second air hole (24).

5. A high-pressure oxygen storage and supply device according to claim 1, characterized in that: The gas cylinder connection end (14) on the skirt (18) for sleeve connection to the composite gas cylinder (2) is a comb-shaped structure uniformly distributed with deformation gaps (19), and the transverse cross-sectional area of ​​the gas cylinder connection end (14) decreases in a direction approaching the composite gas cylinder (2).

6. A high-pressure oxygen storage and supply device according to claim 5, characterized in that: An inner liner positioning column (27) is constructed on the outer periphery of the composite gas cylinder (2), and an annular inner concave embedding groove (28) corresponding to the inner liner positioning column (27) is constructed on the inner periphery of the skirt (18).

7. A high-pressure oxygen storage and supply device according to claim 1, characterized in that: The cabin section connection through-hole (16) is provided on the cabin section connection end (15) of the skirt (18) for connecting the front and rear cabins.

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