Side filling type liquid oxygen supply device
By designing a normal-temperature filling valve and a vacuum jacket structure for the side-filled liquid oxygen supply unit, the leakage problem of the liquid oxygen supply unit was solved, the sealing performance and oxygen capacity were improved, and it is suitable for long-term oxygen supply needs in high-altitude hypoxic environments.
Patent Information
- Application Number
- CN202520126900.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing liquid oxygen generators are prone to changes in the properties of the filling valve gaskets at low temperatures, leading to a decrease in sealing ability and leakage. In addition, existing devices have large spaces and small oxygen capacity, making them inconvenient for long-term field transport.
A side-filling liquid oxygen supply device was designed. The filling valve is located at room temperature. A vacuum jacket and liquid oxygen conduit are used to reduce heat exchange. A sliding rod and sealing ring structure are used to maintain sealing performance and prevent leakage. Efficient filling is achieved through the liquid oxygen conduit.
It achieves the goal of maintaining a tight seal at room temperature, preventing leakage, improving sealing ability, reducing heat exchange, increasing oxygen capacity, and facilitating long-term portability.
Smart Images
Figure CN223953841U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to liquid oxygen oxygen supplier technical field, specifically relates to a side filling type liquid oxygen oxygen supplier. BACKGROUND
[0002] With the increase of altitude on the plateau, the oxygen content of air also decreases accordingly. For example, the average altitude of Qinghai-Tibet Plateau is more than 4000 meters, the air is thin, the air pressure is low, and the normal oxygen supply demand of human body cannot be met, thereby causing hypoxia to cause multiple dysfunction of the body and even endanger life.
[0003] Especially when engaged in field work, with the increase of physical strength, more oxygen is consumed, and the plateau hypoxia reaction is more serious, the physical fitness decreases obviously, and breathing difficulties. The plateau sickness causes different degrees of harm to the human body, and even causes death when the hypoxia is serious.
[0004] At present, the main oxygen supply device on the market is to use gaseous oxygen bag to supply oxygen or air concentration to supply oxygen. The defects of the two ways are that the occupied space is large, the oxygen capacity is small, the additional power supply is needed, and it is not convenient to carry for a long time in the field. The use of liquid oxygen oxygen supplier can meet the demand of light and large capacity.
[0005] The existing liquid oxygen oxygen supplier is generally provided with a filling valve at the bottom, and when liquid oxygen needs to be supplemented, liquid oxygen is filled from the bottom filling valve. Therefore, a sealing gasket is arranged in the filling valve to realize sealing in the open and closed states.
[0006] However, liquid oxygen has a low boiling point, which is-183 DEG C under normal pressure. Under such low temperature condition, the sealing gasket is prone to change in properties and sealing capacity decreases, resulting in liquid leakage. SUMMARY
[0007] The utility model discloses a kind of side filling type liquid oxygen oxygen suppliers to solve the technical problems of the prior art, filling valve can be in normal temperature state, avoid internal sealing gasket change in properties and sealing capacity decreases, will not appear liquid leakage phenomenon.
[0008] To achieve the above object, the side filling type liquid oxygen oxygen supplier designed by the utility model, including the oxygen supplier body, one side of the oxygen supplier body is provided with a liquid oxygen storage tank, the oxygen supplier body is also provided with a filling valve located at the side of the liquid oxygen storage tank, the bottom of the filling valve is provided with a first filling interface for connecting with the liquid oxygen mother tank, the top is provided with a second filling interface, the second filling interface is connected with a liquid oxygen guide pipe, the liquid oxygen guide pipe extends upwards and then bends downwards to the bottom of the oxygen supplier 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 liquid filling cavity is arranged inside the valve body, a second filling interface is arranged on the upper part of the valve body to seal the opening above the liquid filling cavity, a sealing gasket is arranged between the second filling interface and the valve body, a flow channel is arranged in the second filling interface to communicate with the liquid filling cavity inside the valve body, a vertical sliding rod is arranged in the liquid 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 arranged in the liquid filling cavity of the valve body through a plurality of supports, a channel for liquid oxygen flow is arranged between the guide ring and the inner wall of the valve body, a compression spring is sleeved on the sliding rod, one end of the compression spring abuts against the guide ring, and the other end abuts against a support step arranged on the sliding rod, a fixed liquid filling sealing ring is sleeved on the lower end of the sliding rod, when the sliding rod is located at the lowermost position, the liquid filling sealing ring seals the opening below the liquid filling cavity, a first filling interface is arranged on the lower part of the valve body to insert a liquid oxygen mother tank filling base, a locking ring is arranged in the first filling interface to clamp the filling base, and a filling sealing ring is arranged between the upper part 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 sliding rod are both provided with corresponding limiting steps, when the sliding rod is pushed to the uppermost position, the limiting steps abut against each other to limit the sliding rod and prevent the sliding rod from being pulled out.
[0011] Preferably, the lower end of the sliding rod is further fixedly sleeved with a fixing ring for abutting the liquid filling sealing ring against the support step, the size of the fixing ring is smaller than the size of the opening below the liquid filling cavity, and the fixing ring does not affect the stroke of the liquid filling sealing ring.
[0012] Preferably, the second filling interface is threadedly connected with the valve body, a machine screw is arranged on the second filling interface, the machine screw is clamped in the external thread of the valve body through the second filling interface, and the machine screw prevents the second filling interface and the valve body from being loose.
[0013] Preferably, the liquid oxygen storage tank is provided with an outer shell and an inner shell, a vacuum interlayer is formed between the outer shell and the inner shell, the liquid oxygen pipeline enters the inner shell from the bottom of the inner shell after passing through the vacuum interlayer, and heat exchange between the filling valve and the liquid oxygen storage tank is reduced as much as possible.
[0014] Preferably, the liquid oxygen storage tank is provided with an air outlet pipe, the air outlet pipe is connected with an evaporation coil pipe arranged above the liquid oxygen storage tank, and an air outlet device is connected to the tail end of the evaporation coil pipe.
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] 1. The filling valve can be in a normal temperature state, the sealing gasket inside the valve body is prevented from changing in properties and reducing in sealing capacity, and liquid leakage is avoided.
[0017] 2. The filling valve has good sealing performance, avoids leakage of liquid oxygen or gaseous oxygen, and does not affect the filling of liquid oxygen.
[0018] 3. The vacuum interlayer and the liquid oxygen conduit are arranged to reduce heat exchange between the filling valve and the liquid oxygen storage tank as much as possible. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structural schematic view of the side-filling type liquid oxygen oxygen supplier.
[0020] Figure 2 It is a structural schematic view of the side-filling type liquid oxygen oxygen supplier. Figure 1 It is a structural schematic view of the side-filling type liquid oxygen oxygen supplier.
[0021] Reference signs of components in the drawing are as follows:
[0022] The oxygen supplier body 1, the liquid oxygen storage tank 2, the filling valve 3, the first filling interface 4, the second filling interface 5, the liquid oxygen conduit 6, the valve body 7, the liquid filling cavity 8, the sealing gasket 9, the sliding rod 10, the guide ring 11, the compression spring 12, the liquid filling sealing ring 13, the filling base 14, the locking ring 15, the filling sealing ring 16, the limiting step 17, the fixing ring 18, the machine screw 19, the outer barrel 20, the inner barrel 21, the vacuum interlayer 22, the gas outlet pipe 23, the evaporation coil 24, the gas outlet device 25, and the supporting step 26. DETAILED DESCRIPTION
[0023] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0025] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0026] Embodiment 1
[0027] As Figure 1 Indicated, a kind of side filling liquid oxygen oxygen supply device, including oxygen supply device body 1, liquid oxygen storage tank 2 is equipped in one side in oxygen supply device body 1, oxygen supply device body 1 still be equipped with located liquid oxygen storage tank 2 side filling valve 3, the bottom of filling valve 3 is equipped with first filling interface 4 for being connected with liquid oxygen mother tank, top is equipped with second filling interface 5, liquid oxygen guide pipe 6 is connected with second filling interface 5, liquid oxygen guide pipe 6 extends upwards again after bending to the bottom of oxygen supply device body 1 after, from the bottom of liquid oxygen storage tank 2 into liquid oxygen storage tank 2.
[0028] When filling liquid oxygen in this embodiment, liquid oxygen enters filling valve 3 from liquid oxygen mother tank, then enters liquid oxygen storage tank 2 via liquid oxygen guide pipe 6, after filling is completed, filling valve 3 keeps sealing by its internal sealing pad, since filling valve is no longer located in liquid oxygen storage tank 2 inside, but is directly in normal temperature, sealing pad can keep optimal sealing performance, and liquid leakage phenomenon does not appear.
[0029] Embodiment 2
[0030] As Figure 1 Indicated, a kind of side filling liquid oxygen oxygen supply device, including oxygen supply device body 1, liquid oxygen storage tank 2 is equipped in one side in oxygen supply device body 1, oxygen supply device body 1 still be equipped with located liquid oxygen storage tank 2 side filling valve 3, the bottom of filling valve 3 is equipped with first filling interface 4 for being connected with liquid oxygen mother tank, top is equipped with second filling interface 5, liquid oxygen guide pipe 6 is connected with second filling interface 5, liquid oxygen guide pipe 6 extends upwards again after bending to the bottom of oxygen supply device body 1 after, from the bottom of liquid oxygen storage tank 2 into liquid oxygen storage tank 2.
[0031] When filling liquid oxygen in this embodiment, liquid oxygen enters filling valve 3 from liquid oxygen mother tank, then enters liquid oxygen storage tank 2 via liquid oxygen guide pipe 6, after filling is completed, filling valve 3 keeps sealing by its internal sealing pad, since filling valve is no longer located in liquid oxygen storage tank 2 inside, but is directly in normal temperature, sealing pad can keep optimal sealing performance, and liquid leakage phenomenon does not appear.
[0032] Combination Figure 2As shown, in this embodiment, the filling valve 3 comprises a valve body 7, which is internally provided with a vertically penetrating liquid filling cavity 8. The upper portion of the valve body 7 is provided with a second filling interface 5, which seals the upper opening of the liquid filling cavity 8. A sealing gasket 9 is arranged between the second filling interface 5 and the valve body 7. The second filling interface 5 is internally provided with a flow channel, which is in communication with the liquid filling cavity 8 inside the valve body 7. The liquid filling cavity 8 inside the valve body 7 is provided with a vertical sliding rod 10. The upper end of the sliding rod 10 is sleeved with a movable guide ring 11, which is fixedly installed in the liquid filling cavity 8 of the valve body 7 through a plurality of supports. The guide ring 11 is provided with a passage for the flow of liquid oxygen between the inner wall of the valve body 7 and the guide ring 11. The sliding rod 10 is sleeved with a compression spring 12, one end of which abuts against the guide ring 11, and the other end abuts against a support step 26 arranged on the sliding rod 10. The lower end of the sliding rod 10 is sleeved with a fixed liquid filling sealing ring 13. When the sliding rod 10 is located at the lowermost position, the liquid filling sealing ring 13 seals the lower opening of the liquid filling cavity 8. The lower portion of the valve body 7 is provided with a first filling interface 4, into which a filling base 14 of a liquid oxygen mother tank is inserted. The first filling interface 4 is internally provided with a locking ring 15, which clamps the filling base 14. The upper portion of the locking ring 15 is provided with a filling sealing ring 16 between the inner wall of the valve body 7.
[0033] The lower portion of the guide ring 11 and the upper portion of the sliding rod 10 are both provided with limiting steps 17 corresponding to each other. When the sliding rod 10 is pushed to the uppermost position, the limiting steps 17 abut against each other to limit the sliding rod 10, avoiding the sliding rod 10 from being pulled out. The lower end of the sliding rod 10 is further fixedly sleeved with a fixing ring 18, which abuts the liquid filling sealing ring 13 against the support step 26, avoiding the liquid filling sealing ring 13 from falling off and affecting the sealing effect. The size of the fixing ring 18 is smaller than the size of the lower opening of the liquid filling cavity 8, which does not affect the stroke of the liquid filling sealing ring 13. The second filling interface 5 is threadedly connected with the valve body 7. The second filling interface 5 is provided with a machine screw 19, which is clamped in the external thread of the valve body 7 through the second filling interface 5, preventing the second filling interface 5 and the valve body 7 from loosening.
[0034] In this embodiment, when filling liquid oxygen, the 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 guide pipe 6. After the filling is completed, the filling valve 3 is sealed by the sealing gasket inside. Since the filling valve is no longer located inside the liquid oxygen storage tank 2, but directly in the normal temperature, the sealing gasket can maintain the best sealing performance, and there is no liquid leakage phenomenon.
[0035] In the normal state, under the action of the compression spring 12, the liquid filling sealing ring 13 on the sliding rod 10 abuts against the lower opening of the liquid filling cavity 8 to seal it. In the filling state, the filling base 14 is connected, which pushes the sliding rod 10 to move upward. At this time, the compression spring 12 is compressed, and the liquid filling sealing ring 13 is separated from the lower opening of the liquid filling cavity 8, forming a filling channel inside the filling valve 3. The filled liquid oxygen enters the liquid filling cavity 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 guide pipe 6.
[0036] Embodiment 2
[0037] As Figure 1 shown, a side filling liquid oxygen oxygen supplier includes an oxygen supplier body 1, a liquid oxygen storage tank 2 is arranged in the oxygen supplier body 1, a filling valve 3 is arranged in the liquid oxygen storage tank 2, a first filling interface 4 for connecting with a liquid oxygen mother tank is arranged at the bottom of the filling valve 3, a second filling interface 5 is arranged at the top of the filling valve 3, a liquid oxygen pipeline 6 is connected to the second filling interface 5, the liquid oxygen pipeline 6 extends upwardly and then bends downwardly to the bottom of the oxygen supplier body 1, and then enters the liquid oxygen storage tank 2 from the bottom of the liquid oxygen storage tank 2.
[0038] In this embodiment, when filling liquid oxygen, the 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 pipeline 6. After the filling is completed, the filling valve 3 is sealed by the sealing gasket in the filling valve 3. Since the filling valve is no longer located in the liquid oxygen storage tank 2, but is directly in the normal temperature, the sealing gasket can maintain the optimal sealing performance, and the liquid leakage phenomenon does not occur.
[0039] In combination Figure 2 with the shown, in this embodiment, the filling valve 3 includes a valve body 7, an upper and lower through liquid filling cavity 8 is arranged in the valve body 7, a second filling interface 5 closing the opening above the liquid filling cavity 8 is installed on the upper part of the valve body 7, a sealing gasket 9 is arranged between the second filling interface 5 and the valve body 7, a flow channel is opened in the second filling interface 5 and communicates with the liquid filling cavity 8 in the valve body 7, a vertical sliding rod 10 is arranged in the liquid 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 liquid filling cavity 8 of the valve body 7 through a plurality of supports, and there is a channel for the liquid oxygen to flow between the guide ring 11 and the inner wall of the valve body 7, a compression spring 12 is sleeved on the sliding rod 10, one end of the compression spring 12 abuts against the guide ring 11, and the other end abuts against a support step 26 arranged on the sliding rod 10, a fixed liquid filling sealing ring 13 is sleeved on the lower end of the sliding rod 10, when the sliding rod 10 is located at the lowermost position, the liquid filling sealing ring 13 seals the opening below the liquid filling cavity 8, a first filling interface 4 for inserting the filling base 14 of the liquid oxygen mother tank is arranged on the lower part of the valve body 7, a locking ring 15 clamping the filling base 14 is arranged in the first filling interface 4, and a filling sealing ring 16 is arranged between the locking ring 15 and the inner wall of the valve body 7.
[0040] 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 uppermost position, the limiting steps 17 abut against each other to limit the slide rod 10, avoiding the slide rod 10 from falling out, the lower end of the slide rod 10 is further fixed with a fixing ring 18 which pushes the liquid filling sealing ring 13 against the supporting step 26, avoiding the liquid filling sealing ring 13 from falling off and affecting the sealing effect, the size of the fixing ring 18 is smaller than the size of the lower opening of the liquid filling cavity 8, and the fixing ring 18 will not affect the stroke of the liquid filling sealing ring 13, the second filling interface 5 is threadedly connected with the valve body 7, and the second filling interface 5 is provided with machine screws 19 which are clamped in the external threads of the valve body 7 through the second filling interface 5, preventing the second filling interface 5 and the valve body 7 from loosening.
[0041] In addition, in the embodiment, the liquid oxygen storage tank 2 is provided with an outer container 20 and an inner container 21, a vacuum interlayer 22 is formed between the outer container 20 and the inner container 21, the liquid oxygen pipe 6 enters the inner container 21 from the bottom of the inner container 21 after passing through the vacuum interlayer 22, and the length of the liquid oxygen pipe 6 arranged in the vacuum interlayer 22 is as long as possible, and through the vacuum interlayer 22 and the longer liquid oxygen pipe 6, the heat exchange between the filling valve and the liquid oxygen storage tank is reduced as much as possible.
[0042] In the embodiment, when liquid oxygen is filled, the 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 pipe 6, after the filling is completed, the filling valve 3 is sealed by the sealing gasket in the filling valve 3, since the filling valve is no longer located in the liquid oxygen storage tank 2, but is directly in the normal temperature, the sealing gasket can maintain the best sealing performance, and the liquid leakage phenomenon does not occur.
[0043] In the conventional state, under the action of the compression spring 12, the liquid filling sealing ring 13 on the slide rod 10 abuts against the lower opening of the liquid filling cavity 8 to seal the lower opening. In the filling state, the filling base 14 is connected, the filling base 14 pushes the slide rod 10 to move upward, at this time, the compression spring 12 is compressed, the liquid filling sealing ring 13 is separated from the lower opening of the liquid filling cavity 8, a filling channel is formed in the filling valve 3, the filled liquid oxygen enters the liquid filling cavity 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 pipe 6.
[0044] In the above embodiment, the liquid oxygen storage tank 2 is provided with a gas outlet pipe 23, the gas outlet pipe 23 is connected with an evaporation coil pipe 24 arranged above the liquid oxygen storage tank 2, the evaporation coil pipe 24 is connected with a gas outlet device 25 at the end, and the oxygen gas is provided for people to use.
[0045] The utility model discloses a side filling type liquid oxygen oxygen supply device, and the filling valve can be in normal temperature state, avoids the property change and the sealing ability decline of internal sealing washer, and liquid leakage phenomenon will not appear, the filling valve sealing performance is good, avoids the occurrence liquid oxygen or gaseous oxygen leak, and does not influence the filling of liquid oxygen, through the setting of vacuum interlayer and liquid oxygen guide pipe, the heat exchange between the filling valve and the liquid oxygen storage tank is reduced as far as possible.
[0046] Meanwhile, it needs to be explained that the description of the above technical solutions is exemplary, and the specification can be embodied in different forms, and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the present disclosure be thorough and complete, and will fully convey the scope disclosed by the specification to those skilled in the art. In addition, the technical solutions of the present disclosure are limited by the scope of the claims only. The features of various embodiments of the present disclosure can be partially or wholly combined or spliced with each other, and can be executed in various different configurations as those skilled in the art can fully understand. The embodiments of the present disclosure can be executed independently of each other, or can be executed together in a mutually dependent relationship.
[0047] For ordinary skilled persons in the technical field to which the present disclosure belongs, without departing from the concept of the present disclosure, a number of simple deductions or substitutions can be made, and the above structures should be considered as belonging to the protection scope of the present disclosure.
Claims
1. A side-filling liquid oxygen oxygen supplier, comprising an oxygen supplier body (1), a liquid oxygen storage tank (2) is arranged in one side of the oxygen supplier body (1), characterized in that: The oxygen supplier body (1) is further provided with a filling valve (3) 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 with a liquid oxygen mother tank, the top of the filling valve (3) is provided with a second filling interface (5), the second filling interface (5) is connected with a liquid oxygen guide pipe (6), the liquid oxygen guide pipe (6) extends upward and then bends downward to the bottom of the oxygen supplier body (1), and then enters the liquid oxygen storage tank (2) from the bottom of the liquid oxygen storage tank (2).
2. The side-fill liquid oxygen supply according to claim 1, wherein: The filling valve (3) comprises a valve body (7), the inside of the valve body (7) is provided with a filling cavity (8) penetrating upward and downward, the upper part of the valve body (7) is provided with a second filling interface (5) for sealing the opening above the filling cavity (8), a sealing gasket (9) is arranged between the second filling interface (5) and the valve body (7), a flow channel is formed in the second filling interface (5) and communicates with the filling cavity (8) in the valve body (7), a vertical sliding rod (10) is arranged in the filling cavity (8) of the valve body (7), the upper end of the sliding rod (10) is sleeved with a movable guide ring (11), the guide ring (11) is fixedly arranged in the filling cavity (8) of the valve body (7) through a plurality of supports, and a channel for liquid oxygen to flow through is formed between the guide ring (11) and the inner wall of the valve body (7), a compression spring (12) is sleeved on the sliding rod (10), one end of the compression spring (12) abuts against the guide ring (11), and the other end abuts against a support step (26) arranged on the sliding rod (10), the lower end of the sliding rod (10) is sleeved with a fixed filling sealing ring (13), when the sliding rod (10) is located at the lowermost position, the filling sealing ring (13) seals the opening below the filling cavity (8), the lower part of the valve body (7) is provided with a first filling interface (4) into which a filling base (14) of the liquid oxygen mother tank is inserted, 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 arranged between the upper part of the locking ring (15) and the inner wall of the valve body (7).
3. The side-fill liquid oxygen supply of claim 2, wherein: The lower part of the guide ring (11) and the upper part of the sliding rod (10) are both provided with limiting steps (17) corresponding to each other, when the sliding rod (10) is pushed to the uppermost position, the limiting steps (17) abut against each other.
4. The side-fill liquid oxygen supply of claim 2, wherein: The lower end of the sliding rod (10) is further fixedly sleeved with a fixing ring (18) for abutting the filling sealing ring (13) against the support step (26), and the size of the fixing ring (18) is smaller than the size of the opening below the filling cavity (8).
5. The side-fill liquid oxygen supply of claim 2, wherein: The second filling interface (5) is threadedly connected with the valve body (7), the second filling interface (5) is provided with a machine screw (19), and the machine screw (19) is clamped in the external thread of the valve body (7) through the second filling interface (5).
6. The side-fill liquid oxygen supply of claim 2, wherein: The liquid oxygen storage tank (2) is provided with an outer shell (20) and an inner shell (21), a vacuum interlayer (22) is formed between the outer shell (20) and the inner shell (21), and the liquid oxygen conduit (6) enters the inner shell (21) from the bottom of the inner shell (21) after passing through the vacuum interlayer (22).
7. The side-fill liquid oxygen supply of claim 1, wherein: An air outlet pipe (23) is arranged in the liquid oxygen storage tank (2), the air outlet pipe (23) is connected with an evaporation coil (24) arranged above the liquid oxygen storage tank (2), and the evaporation coil (24) is connected with an air outlet device (25) at the end.