Side filling type liquid oxygen supply device

Abstract

The invention relates to the technical field of liquid oxygen supply devices, and discloses a side filling type liquid oxygen supply device which comprises an oxygen supply device body, a liquid oxygen storage tank is arranged on one side in the oxygen supply device body, a filling valve located on the side face of the liquid oxygen storage tank is further arranged in the oxygen supply device body, and a first filling connector used for being connected with a liquid oxygen mother tank is arranged at the bottom of the filling valve. A second filling connector is arranged at the top of the oxygen supply device body and connected with a liquid oxygen guide pipe, and the liquid oxygen guide pipe extends upwards, then is bent downwards to the bottom of the oxygen supply device body and enters the liquid oxygen storage tank from the bottom of the liquid oxygen storage tank. According to the side filling type liquid oxygen supply device, the filling valve can be in a normal-temperature state, property change and sealing capacity reduction of the sealing gasket in the filling valve are avoided, and the liquid leakage phenomenon is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of liquid oxygen suppliers, and in particular to a side-filling liquid oxygen supplier. Background Art

[0002] As the altitude increases on the plateau, the oxygen content in the air decreases accordingly. For example, the average altitude of the Qinghai-Tibet Plateau is above 4,000 meters, the air is thin and the air pressure is low, which cannot meet the normal oxygen supply needs of the human body, resulting in hypoxia, causing multifunctional disorders of the body and even endangering life.

[0003] Especially when doing outdoor work, as the physical strength increases, the oxygen consumption increases, which aggravates the plateau hypoxia reaction, significantly reduces physical strength, and makes breathing difficult. Altitude sickness and other diseases cause varying degrees of damage to the human body, and severe hypoxia can even cause death.

[0004] At present, the main oxygen supply devices on the market use gaseous oxygen bags or air concentration to supply oxygen. The disadvantages of these two methods are that they take up a lot of space, have a small oxygen capacity, require an additional power source, and are not convenient to carry around in the field for a long time. Using a liquid oxygen supply can meet the needs of lightness and large capacity.

[0005] The existing liquid oxygen supply device generally has a filling valve at the bottom, and when liquid oxygen needs to be supplemented, liquid oxygen is filled in from the filling valve at the bottom. Therefore, a sealing gasket is provided in the filling valve to achieve sealing in the open and closed states.

[0006] However, the boiling point of liquid oxygen is low, which is -183°C under normal pressure. Under such low temperature conditions, the properties of the sealing gasket are prone to change, and the sealing ability is reduced, resulting in leakage. Summary of the invention

[0007] The purpose of the present invention is to address the deficiencies of the above-mentioned technology and provide a side-filling liquid oxygen supply device, in which the filling valve can be kept at room temperature to avoid changes in the properties of the internal sealing gasket and a decrease in the sealing ability, and no leakage will occur.

[0008] To achieve the above-mentioned purpose, the side-filling liquid oxygen supply device designed in the present invention includes an oxygen supply body, a liquid oxygen storage tank is provided on one side of the oxygen supply body, and a filling valve located on the side of the liquid oxygen storage tank is also provided in the oxygen supply body. A first filling interface for connecting to a liquid oxygen mother tank is provided at the bottom of the filling valve, and a second filling interface is provided at the top. The second filling interface is connected with a liquid oxygen conduit. The liquid oxygen conduit extends upward and then bends downward to the bottom of the oxygen supply body, and then enters the liquid oxygen storage tank from the bottom of the liquid oxygen storage tank.

[0009] Preferably, the filling valve comprises a valve body, a filling cavity which passes through from top to bottom is provided inside the valve body, a second filling interface which seals the upper opening of the filling cavity is installed on the upper part of the valve body, a sealing gasket is arranged between the second filling interface and the valve body, a flow channel which communicates with the filling cavity inside the valve body is opened in the second filling interface, a vertical sliding rod is provided in the filling cavity of the valve body, a movable guide ring is sleeved on the upper end of the sliding rod, the guide ring is fixedly installed in the filling cavity of the valve body by a plurality of brackets, and there is a supply between the guide ring and the inner wall of the valve body. The channel through which liquid oxygen flows, the slide rod is sleeved with a compression spring, one end of the compression spring rests on the guide ring, and the other end rests on the supporting step arranged on the slide rod, the lower end of the slide rod is sleeved with a fixed liquid filling sealing ring, when the slide rod is at the bottom, the liquid filling sealing ring seals the opening below the liquid filling cavity, the lower part of the valve body is provided with a first filling interface for inserting a filling base of a liquid oxygen mother tank, the first filling interface is provided with a locking ring for clamping the filling base, and a filling sealing ring is provided between the top of the locking ring and the inner wall of the valve body.

[0010] Preferably, the lower part of the guide ring and the upper part of the slide bar are provided with corresponding limiting steps, and when the slide bar is pushed to the uppermost part, the limiting steps abut against each other to limit the slide bar and prevent it from falling out.

[0011] Preferably, a fixing ring is fixedly sleeved on the lower end of the slide rod to press the liquid-filling sealing ring against the supporting step. The size of the fixing ring is smaller than the size of the opening below the liquid-filling cavity and will not affect the stroke of the liquid-filling sealing ring.

[0012] Preferably, the second filling interface is threadedly connected to the valve body, and a machine screw is provided on the second filling interface. The machine screw passes through the second filling interface and is stuck in the external thread of the valve body to prevent loosening between the second filling interface and the valve body.

[0013] Preferably, the liquid oxygen storage tank is provided with an outer liner and an inner liner, a vacuum interlayer is formed between the outer liner and the inner liner, and the liquid oxygen conduit passes through the vacuum interlayer and enters the inner liner from the bottom of the inner liner, thereby minimizing heat exchange between the filling valve and the liquid oxygen storage tank.

[0014] Preferably, the length of the liquid oxygen conduit arranged in the vacuum interlayer is as long as possible to minimize the heat exchange between the filling valve and the liquid oxygen storage tank.

[0015] Preferably, an air outlet pipe is provided in the liquid oxygen storage tank, the air outlet pipe is connected to an evaporation coil arranged above the liquid oxygen storage tank, and the end of the evaporation coil is connected to an air outlet device.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The filling valve can be kept at room temperature to avoid changes in the properties of the internal sealing gasket and a decrease in the sealing ability, and no leakage will occur;

[0018] 2. The filling valve has good sealing performance to avoid leakage of liquid oxygen or gaseous oxygen and does not affect the filling of liquid oxygen;

[0019] 3. By providing a vacuum interlayer and a liquid oxygen conduit, the heat exchange between the filling valve and the liquid oxygen storage tank is reduced as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the side-filling liquid oxygen supplier of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the filling valve.

[0022] The components in the figure are numbered as follows:

[0023] Oxygen supply device body 1, liquid oxygen storage tank 2, filling valve 3, first filling interface 4, second filling interface 5, liquid oxygen conduit 6, valve body 7, liquid filling chamber 8, sealing gasket 9, slide rod 10, guide ring 11, compression spring 12, liquid filling sealing ring 13, filling base 14, locking ring 15, filling sealing ring 16, limiting step 17, fixing ring 18, machine screw 19, outer liner 20, inner liner 21, vacuum interlayer 22, air outlet pipe 23, evaporating coil 24, air outlet device 25, supporting step 26. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example 1

[0028] like Figure 1 As shown, a side-filling liquid oxygen supply device includes an oxygen supply body 1, a liquid oxygen storage tank 2 is provided on one side of the oxygen supply body 1, a filling valve 3 located on the side of the liquid oxygen storage tank 2 is also provided in the oxygen supply body 1, a first filling interface 4 for connecting to a liquid oxygen mother tank is provided at the bottom of the filling valve 3, a second filling interface 5 is provided at the top, the second filling interface 5 is connected to a liquid oxygen conduit 6, the liquid oxygen conduit 6 extends upward and then bends downward to the bottom of the oxygen supply body 1, and then enters the liquid oxygen storage tank 2 from the bottom of the liquid oxygen storage tank 2.

[0029] When filling liquid oxygen in this embodiment, liquid oxygen enters the filling valve 3 from the liquid oxygen mother tank, and then enters the liquid oxygen storage tank 2 through the liquid oxygen conduit 6. After the filling is completed, the filling valve 3 remains sealed by the sealing gasket inside it. Since the filling valve is no longer located inside the liquid oxygen storage tank 2, but is directly at room temperature, the sealing gasket can maintain optimal sealing performance and will not leak.

[0030] Example 2

[0031] like Figure 1 As shown, a side-filling liquid oxygen supply device includes an oxygen supply body 1, a liquid oxygen storage tank 2 is provided on one side of the oxygen supply body 1, a filling valve 3 located on the side of the liquid oxygen storage tank 2 is also provided in the oxygen supply body 1, a first filling interface 4 for connecting to a liquid oxygen mother tank is provided at the bottom of the filling valve 3, a second filling interface 5 is provided at the top, the second filling interface 5 is connected to a liquid oxygen conduit 6, the liquid oxygen conduit 6 extends upward and then bends downward to the bottom of the oxygen supply body 1, and then enters the liquid oxygen storage tank 2 from the bottom of the liquid oxygen storage tank 2.

[0032] When filling liquid oxygen in this embodiment, liquid oxygen enters the filling valve 3 from the liquid oxygen mother tank, and then enters the liquid oxygen storage tank 2 through the liquid oxygen conduit 6. After the filling is completed, the filling valve 3 remains sealed by the sealing gasket inside it. Since the filling valve is no longer located inside the liquid oxygen storage tank 2, but is directly at room temperature, the sealing gasket can maintain optimal sealing performance and will not leak.

[0033] Combination Figure 2As shown, in this embodiment, the filling valve 3 includes a valve body 7, a filling cavity 8 which is connected from top to bottom is provided inside the valve body 7, a second filling interface 5 which seals the upper opening of the filling cavity 8 is installed on the upper part of the valve body 7, a sealing gasket 9 is provided between the second filling interface 5 and the valve body 7, a flow channel which is connected with the filling cavity 8 inside the valve body 7 is opened in the second filling interface 5, a vertical slide rod 10 is provided in the filling cavity 8 of the valve body 7, a movable guide ring 11 is sleeved on the upper end of the slide rod 10, the guide ring 11 is fixedly installed in the filling cavity 8 of the valve body 7 through a plurality of brackets, and a liquid supply is provided between the guide ring 11 and the inner wall of the valve body 7. The channel through which oxygen flows, a compression spring 12 is sleeved on the slide bar 10, one end of the compression spring 12 rests on the guide ring 11, and the other end rests on the support step 26 provided on the slide bar 10, and a fixed liquid filling sealing ring 13 is sleeved on the lower end of the slide bar 10. When the slide bar 10 is at the bottom, the liquid filling sealing ring 13 seals the lower opening of the liquid filling chamber 8, and a first filling interface 4 is provided at the lower part of the valve body 7 for inserting a filling base 14 of a liquid oxygen mother tank, and a locking ring 15 is provided in the first filling interface 4 for clamping the filling base 14, and a filling sealing ring 16 is provided between the upper part of the locking ring 15 and the inner wall of the valve body 7.

[0034] Among them, the lower part of the guide ring 11 and the upper part of the slide rod 10 are provided with corresponding limiting steps 17. When the slide rod 10 is pushed to the top, the limiting steps 17 press against each other to limit the slide rod 10 and prevent it from falling out. The lower end of the slide rod 10 is also fixed with a fixing ring 18 that presses the liquid filling sealing ring 13 against the supporting step 26 to prevent the liquid filling sealing ring 13 from falling and affecting the sealing effect. The size of the fixing ring 18 is smaller than the size of the opening below the liquid filling chamber 8 and will not affect the stroke of the liquid filling sealing ring 13. The second filling interface 5 is threadedly connected to the valve body 7. A machine screw 19 is provided on the second filling interface 5. The machine screw 19 passes through the second filling interface 5 and is stuck in the external thread of the valve body 7 to prevent loosening between the upper second filling interface 5 and the valve body 7.

[0035] When filling liquid oxygen in this embodiment, liquid oxygen enters the filling valve 3 from the liquid oxygen mother tank, and then enters the liquid oxygen storage tank 2 through the liquid oxygen conduit 6. After the filling is completed, the filling valve 3 remains sealed by the sealing gasket inside it. Since the filling valve is no longer located inside the liquid oxygen storage tank 2, but is directly at room temperature, the sealing gasket can maintain optimal sealing performance and will not leak.

[0036] Among them, under the normal state, under the action of the compression spring 12, the liquid filling seal ring 13 on the slide bar 10 presses against the opening below the liquid filling chamber 8 to seal it. In the filling state, the filling base 14 is connected, and the filling base 14 pushes the slide bar 10 to move upward. At this time, the compression spring 12 is compressed, and the liquid filling seal ring 13 is separated from the opening below the liquid filling chamber 8, forming a filling channel inside the filling valve 3, and the filled liquid oxygen enters the liquid filling chamber 2, further enters the flow channel of the upper mounting sleeve 3, and finally enters the liquid oxygen storage tank 2 through the liquid oxygen conduit 6.

[0037] Example 2

[0038] like Figure 1 As shown, a side-filling liquid oxygen supply device includes an oxygen supply body 1, a liquid oxygen storage tank 2 is provided on one side of the oxygen supply body 1, a filling valve 3 located on the side of the liquid oxygen storage tank 2 is also provided in the oxygen supply body 1, a first filling interface 4 for connecting to a liquid oxygen mother tank is provided at the bottom of the filling valve 3, a second filling interface 5 is provided at the top, the second filling interface 5 is connected to a liquid oxygen conduit 6, the liquid oxygen conduit 6 extends upward and then bends downward to the bottom of the oxygen supply body 1, and then enters the liquid oxygen storage tank 2 from the bottom of the liquid oxygen storage tank 2.

[0039] When filling liquid oxygen in this embodiment, liquid oxygen enters the filling valve 3 from the liquid oxygen mother tank, and then enters the liquid oxygen storage tank 2 through the liquid oxygen conduit 6. After the filling is completed, the filling valve 3 remains sealed by the sealing gasket inside it. Since the filling valve is no longer located inside the liquid oxygen storage tank 2, but is directly at room temperature, the sealing gasket can maintain optimal sealing performance and will not leak.

[0040] Combination Figure 2 As shown, in this embodiment, the filling valve 3 includes a valve body 7, a filling cavity 8 which is connected from top to bottom is provided inside the valve body 7, a second filling interface 5 which seals the upper opening of the filling cavity 8 is installed on the upper part of the valve body 7, a sealing gasket 9 is provided between the second filling interface 5 and the valve body 7, a flow channel which is connected with the filling cavity 8 inside the valve body 7 is opened in the second filling interface 5, a vertical slide rod 10 is provided in the filling cavity 8 of the valve body 7, a movable guide ring 11 is sleeved on the upper end of the slide rod 10, the guide ring 11 is fixedly installed in the filling cavity 8 of the valve body 7 through a plurality of brackets, and a liquid supply is provided between the guide ring 11 and the inner wall of the valve body 7. The channel through which oxygen flows, a compression spring 12 is sleeved on the slide bar 10, one end of the compression spring 12 rests on the guide ring 11, and the other end rests on the support step 26 provided on the slide bar 10, and a fixed liquid filling sealing ring 13 is sleeved on the lower end of the slide bar 10. When the slide bar 10 is at the bottom, the liquid filling sealing ring 13 seals the lower opening of the liquid filling chamber 8, and a first filling interface 4 is provided at the lower part of the valve body 7 for inserting a filling base 14 of a liquid oxygen mother tank, and a locking ring 15 is provided in the first filling interface 4 for clamping the filling base 14, and a filling sealing ring 16 is provided between the upper part of the locking ring 15 and the inner wall of the valve body 7.

[0041] Among them, the lower part of the guide ring 11 and the upper part of the slide rod 10 are provided with corresponding limiting steps 17. When the slide rod 10 is pushed to the top, the limiting steps 17 press against each other to limit the slide rod 10 and prevent it from falling out. The lower end of the slide rod 10 is also fixed with a fixing ring 18 that presses the liquid filling sealing ring 13 against the supporting step 26 to prevent the liquid filling sealing ring 13 from falling and affecting the sealing effect. The size of the fixing ring 18 is smaller than the size of the opening below the liquid filling chamber 8 and will not affect the stroke of the liquid filling sealing ring 13. The second filling interface 5 is threadedly connected to the valve body 7. A machine screw 19 is provided on the second filling interface 5. The machine screw 19 passes through the second filling interface 5 and is stuck in the external thread of the valve body 7 to prevent loosening between the upper second filling interface 5 and the valve body 7.

[0042] In addition, in the present embodiment, the liquid oxygen storage tank 2 is provided with an outer liner 20 and an inner liner 21, and a vacuum interlayer 22 is formed between the outer liner 20 and the inner liner 21. The liquid oxygen conduit 6 enters the inner liner 21 from the bottom of the inner liner 21 after passing through the vacuum interlayer 22, and the length of the liquid oxygen conduit 6 arranged in the vacuum interlayer 22 is as long as possible. Through the vacuum interlayer 22 and the longer liquid oxygen conduit 6, the heat exchange between the filling valve and the liquid oxygen storage tank is minimized as much as possible.

[0043] When filling liquid oxygen in this embodiment, liquid oxygen enters the filling valve 3 from the liquid oxygen mother tank, and then enters the liquid oxygen storage tank 2 through the liquid oxygen conduit 6. After the filling is completed, the filling valve 3 remains sealed by the sealing gasket inside it. Since the filling valve is no longer located inside the liquid oxygen storage tank 2, but is directly at room temperature, the sealing gasket can maintain optimal sealing performance and will not leak.

[0044] Among them, under the normal state, under the action of the compression spring 12, the liquid filling seal ring 13 on the slide bar 10 presses against the opening below the liquid filling chamber 8 to seal it. In the filling state, the filling base 14 is connected, and the filling base 14 pushes the slide bar 10 to move upward. At this time, the compression spring 12 is compressed, and the liquid filling seal ring 13 is separated from the opening below the liquid filling chamber 8, forming a filling channel inside the filling valve 3, and the filled liquid oxygen enters the liquid filling chamber 2, further enters the flow channel of the upper mounting sleeve 3, and finally enters the liquid oxygen storage tank 2 through the liquid oxygen conduit 6.

[0045] In the above embodiment, an air outlet pipe 23 is provided in the liquid oxygen storage tank 2, and the air outlet pipe 23 is connected to an evaporation coil 24 provided above the liquid oxygen storage tank 2, and the end of the evaporation coil 24 is connected to an air outlet device 25 to provide oxygen for human use.

[0046] In the side-filling liquid oxygen supply device of the present invention, the filling valve can be kept at room temperature, thereby preventing the internal sealing gasket from changing in properties and reducing the sealing ability, and no leakage will occur; the filling valve has good sealing performance, thereby preventing leakage of liquid oxygen or gaseous oxygen and not affecting the filling of liquid oxygen; through the arrangement of the vacuum interlayer and the liquid oxygen conduit, the heat exchange between the filling valve and the liquid oxygen storage tank is reduced as much as possible.

[0047] At the same time, it should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be construed as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims. The features of the various embodiments of the present invention may be partially or completely combined or spliced ​​with each other, and may be performed in various different configurations as those skilled in the art may fully understand. The embodiments of the present invention may be performed independently of each other, or may be performed together in a mutually dependent relationship.

[0048] For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, and the above structures should be regarded as belonging to the protection scope of the present invention.

Claims

1. A side-filling liquid oxygen supply device, comprising an oxygen supply device body (1), wherein a liquid oxygen storage tank (2) is provided on one side of the oxygen supply device body (1), characterized in that: The oxygen supply device body (1) is also provided with a filling valve (3) located on the side of the liquid oxygen storage tank (2); the bottom of the filling valve (3) is provided with a first filling interface (4) for connecting to the liquid oxygen mother tank, and the top is provided with a second filling interface (5); the second filling interface (5) is connected to a liquid oxygen conduit (6); the liquid oxygen conduit (6) extends upward and then bends downward to the bottom of the oxygen supply device body (1), and then enters the liquid oxygen storage tank (2) from the bottom of the liquid oxygen storage tank (2).

2. The side-filled liquid oxygen supply device according to claim 1, characterized in that: The filling valve (3) comprises a valve body (7), wherein a filling cavity (8) is provided inside the valve body (7) and is connected vertically. A second filling interface (5) is installed on the upper part of the valve body (7) to seal the upper opening of the filling cavity (8). A sealing gasket (9) is provided between the second filling interface (5) and the valve body (7). A flow channel is provided in the second filling interface (5) and is connected to the filling cavity (8) inside the valve body (7). A vertical sliding rod (10) is provided inside the filling cavity (8) of the valve body (7). A movable guide ring (11) is sleeved on the upper end of the sliding rod (10). The guide ring (11) is fixedly installed in the filling cavity (8) of the valve body (7) through a plurality of brackets, and a liquid oxygen flow is provided between the guide ring (11) and the inner wall of the valve body (7). The slide bar (10) is provided with a compression spring (12), one end of the compression spring (12) is against the guide ring (11), and the other end is against the support step (26) provided on the slide bar (10), the lower end of the slide bar (10) is provided with a fixed liquid filling sealing ring (13), when the slide bar (10) is located at the bottom, the liquid filling sealing ring (13) seals the lower opening of the liquid filling cavity (8), the lower part of the valve body (7) is provided with a first filling interface (4) for inserting a filling base (14) of a liquid oxygen mother tank, the first filling interface (4) is provided with a locking ring (15) for clamping the filling base (14), and a filling sealing ring (16) is provided between the upper part of the locking ring (15) and the inner wall of the valve body (7).

3. The side-filled liquid oxygen supply device according to claim 2, characterized in that: The lower part of the guide ring (11) and the upper part of the slide bar (10) are both provided with corresponding limiting steps (17). When the slide bar (10) is pushed to the uppermost part, the limiting steps (17) abut against each other.

4. The side-filled liquid oxygen supply device according to claim 2, characterized in that: The lower end of the slide rod (10) is also fixedly sleeved with a fixing ring (18) for pressing the liquid filling sealing ring (13) against the supporting step (26), and the size of the fixing ring (18) is smaller than the size of the lower opening of the liquid filling cavity (8).

5. The side-filled liquid oxygen supply device according to claim 2, characterized in that: The second filling interface (5) is threadedly connected to the valve body (7), and a machine screw (19) is provided on the second filling interface (5). The machine screw (19) passes through the second filling interface (5) and is stuck in the external thread of the valve body (7).

6. The side-filled liquid oxygen supply device according to claim 2, characterized in that: The liquid oxygen storage tank (2) is provided with an outer liner (20) and an inner liner (21), a vacuum interlayer (22) is formed between the outer liner (20) and the inner liner (21), and the liquid oxygen conduit (6) passes through the vacuum interlayer (22) and enters the inner liner (21) from the bottom of the inner liner (21).

7. The side-filled liquid oxygen supply device according to claim 6, characterized in that: The length of the liquid oxygen conduit (6) arranged in the vacuum interlayer (22) is as long as possible.

8. The side-filled liquid oxygen supply device according to claim 1, characterized in that: An air outlet pipe (23) is provided in the liquid oxygen storage tank (2), the air outlet pipe (23) is connected to an evaporation coil (24) provided above the liquid oxygen storage tank (2), and the end of the evaporation coil (24) is connected to an air outlet device (25).

Images