A portable liquid oxygen storage and supply device

Abstract

The present invention belongs to the technical field of oxygen supply devices, and specifically relates to a portable liquid oxygen storage and supply device. In the present invention, a liquid oxygen filling valve group is installed at the top liquid inlet of the liquid oxygen storage tank body, and is used to fill the liquid oxygen storage tank body with liquid oxygen; the vaporization coil is wrapped around the top liquid inlet of the liquid oxygen storage tank body, connecting the interior of the liquid oxygen storage tank body and the safety valve group, and the safety valve group is installed on the upper part of the liquid oxygen storage tank body, and is used to release the pressure inside the liquid oxygen storage tank body; the oxygen output display module is fixed on the upper part of the liquid oxygen storage tank body, and is used to display the oxygen output status of the liquid oxygen storage tank body, and at the same time, it can realize the connection between the storage and supply device and the external breathing mask or nasal oxygen tube, so as to supply oxygen to the human body; the outer cover is covered on the upper part of the liquid oxygen storage tank body, and is used to protect each component. The present invention achieves long-term, high-purity, noise-free and continuous oxygen supply by storing a small amount of liquid oxygen in a cold state and effectively controlling the vaporization oxygen supply process of liquid oxygen.

Description

Technical Field

[0001] The invention belongs to the technical field of oxygen supply devices, and in particular relates to a portable liquid oxygen storage and supply device. Background Art

[0002] The air in the plateau is thin. As the altitude increases, the oxygen partial pressure in the air gradually decreases, which makes it difficult to meet the normal oxygen supply needs of the human body. It is easy to cause hypoxia and cause multifunctional disorders of the body, and even endanger life. By inhaling gases with higher oxygen concentrations than air, the body's hypoxia can be corrected and the arterial oxygen partial pressure and blood oxygen saturation levels can be increased. Especially when the intensity of work and life in the plateau increases, the oxygen consumption of the brain and body increases, which can easily aggravate the plateau hypoxia reaction, causing difficulty breathing, and a significant decrease in thinking reaction and physical endurance.

[0003] The existing domestic liquid oxygen storage and supply devices have a small liquid oxygen storage capacity, a short oxygen supply time, a complex filling and safety valve body structure, and scattered liquid oxygen and oxygen pipelines, which makes the storage and supply device body heavy, and the liquid oxygen filling and use operations are relatively complicated. At present, the plateau oxygen supply devices used in the civilian market are mainly portable oxygen tanks, which have a small oxygen capacity, a short oxygen supply time, and occupy a large space, making it difficult to meet the oxygen supply needs for a long time. In addition, there is also a portable oxygen generator, the oxygen supply time is limited by the battery power, it will continue to make noise when in use, and the comfort of oxygen supply is not good. Therefore, it is urgent to provide an oxygen supply device that is easy to carry, can achieve long-term, high-purity, noise-free continuous oxygen supply, and prevent and improve human hypoxia. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a portable liquid oxygen storage and supply device, which can store a small amount of liquid oxygen by keeping it cold and effectively control the vaporization oxygen supply process of liquid oxygen, so as to achieve long-term, high-purity, noise-free and continuous oxygen supply.

[0005] The technical solution adopted by the present invention is:

[0006] A portable liquid oxygen storage and supply device comprises a liquid oxygen storage tank, a liquid oxygen filling valve group, a vaporizing coil, a safety valve group, an oxygen output display module and an outer cover. The liquid oxygen storage tank is a main container for storing liquid oxygen. The liquid oxygen filling valve group is installed at the top liquid inlet of the liquid oxygen storage tank and is used to fill the liquid oxygen storage tank with liquid oxygen. The vaporizing coil is wound around the top liquid inlet of the liquid oxygen storage tank and connects the interior of the liquid oxygen storage tank and the safety valve group. The safety valve group is installed at the upper part of the liquid oxygen storage tank and is used to release the pressure inside the liquid oxygen storage tank. The oxygen output display module is fixed at the upper part of the liquid oxygen storage tank and is used to display the oxygen output status of the liquid oxygen storage tank. At the same time, the storage and supply device can be connected to an external breathing mask or a nasal oxygen tube to supply oxygen to the human body. The outer cover is covered at the upper part of the liquid oxygen storage tank and is used to protect various components.

[0007] The liquid oxygen storage tank body is a hollow vacuum insulation structure, and the liquid oxygen storage tank body includes an outer liner, an inner liner, an upper platform, and a fixing ring. The upper ends of the inner liner and the outer liner are provided with protruding mouths, which serve as liquid inlets for filling liquid oxygen. A horizontal upper platform is provided at the connection between the liquid inlet and the outer liner, and a fixing ring is fixedly installed on the top of the liquid inlet.

[0008] The liquid oxygen filling valve group is installed inside the liquid inlet, and is used to fill liquid oxygen from the outside into the liquid oxygen storage tank; the vaporizer coil is spirally coiled on the outside of the liquid inlet of the liquid oxygen storage tank, and is used to exchange heat between the low-temperature oxygen in the vaporizer coil and the outside; the safety valve group is arranged on the upper platform of the liquid oxygen storage tank, and the safety valve group is provided with a certain safety pressure threshold, and the safety pressure threshold is adjusted according to the external atmospheric pressure value of the area where the portable liquid oxygen storage and supply device is used.

[0009] A stainless steel gas oxygen conduit and one end of a stainless steel liquid oxygen conduit are welded to the inner liner opening of the liquid oxygen storage tank body, the other end of the stainless steel gas oxygen conduit opens upward, and the other end of the stainless steel liquid oxygen conduit opens downward and penetrates into the bottom of the tank body.

[0010] The liquid oxygen filling valve group includes a filling valve group valve body, a filling valve core, an emptying valve core, an O-ring, a flood seal, a valve body pressure plate, a sealing gasket, a filling liquid oxygen guide tube, and an emptying plug. The filling valve group valve body is a T-shaped structure. The top of the filling valve group valve body is provided with a through hole matched with a fixing ring, and the lower part of the filling valve group valve body is inserted into the liquid inlet; a valve body pressure plate is installed at the bottom of the filling valve group valve body, a filling valve core and an emptying valve core are arranged inside the filling valve group valve body, an emptying plug installed on the filling valve group valve body is arranged below the emptying valve core, and a filling liquid oxygen guide tube is arranged below the filling valve core, and the filling liquid oxygen guide tube is inserted into the interior of the liquid oxygen storage tank body.

[0011] A sealing gasket is provided on the outside of the valve body pressure plate. The material of the sealing gasket is low-temperature resistant polytetrafluoroethylene. When the portable liquid oxygen storage and supply device is in normal use, the sealing gasket is tightly sealed with the inner tank mouth of the liquid oxygen storage tank to ensure that the liquid oxygen will not leak out; a groove is opened on the middle outer wall of the valve body of the filling valve group, and the O-ring is installed in the groove. A groove is opened on the bottom outer wall, and a pan seal is installed in the groove to play a sealing role.

[0012] The safety valve group includes a safety valve group body, a first inlet of the safety valve group, a second inlet of the safety valve group, a safety pressure valve, a balancing pressure valve, and an air outlet of the safety valve group. The safety valve group body is fixed on the upper platform of the liquid oxygen storage tank body. The upper part of the safety valve group is provided with a balancing pressure valve and a safety pressure valve. The first inlet and the second inlet are respectively provided on both sides of the safety valve group. The upper part of the safety valve group near the first inlet is provided with an air outlet of the safety valve group.

[0013] The vaporization coil comprises an inner aluminum tube and an outer aluminum tube, one end of each of the two groups of aluminum tubes are fixed inside the liquid oxygen filling valve group, and the end of the inner aluminum tube fixed inside the liquid oxygen filling valve group is connected to the stainless steel liquid oxygen conduit, and the other end of the inner aluminum tube is connected to the first inlet of the safety valve group through a silicone hose; the end of the outer aluminum tube fixed inside the liquid oxygen filling valve group is connected to the gas oxygen conduit, and the other end of the outer aluminum tube is connected to the second inlet of the safety valve group through a silicone hose.

[0014] The pressure value threshold of the balance pressure valve is 0.1Mpa; the pressure threshold of the safety pressure valve is 0.15Mpa.

[0015] The oxygen output display module includes an oxygen output display block, an air inlet, a small buoy, and an air outlet. The oxygen output display block is fixed on the upper platform of the liquid oxygen storage tank body. The upper part of the oxygen output display block is a stepped structure. Two sections of the step are respectively provided with through holes, and the through holes are connected inside the oxygen output display block; an air inlet is provided on the top of the through hole of the low step, and the air inlet is connected to the air outlet of the safety valve group through a silicone hose; an air outlet is provided on the top of the through hole of the high step, and a small buoy that can move up and down is provided inside the through hole; the main body is a transparent body made of organic glass.

[0016] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0017] (1) The portable liquid oxygen storage and supply device provided by the present invention increases the capacity of the liquid oxygen storage tank while ensuring portability, thereby greatly improving the duration of oxygen supply; by utilizing the vaporization of liquid oxygen to convert it into gaseous oxygen, the expansion ratio is 1:860, which can ensure that a small-volume liquid oxygen storage tank can be vaporized and converted into a large volume of high-purity gaseous oxygen.

[0018] (2) The portable liquid oxygen storage and supply device provided by the present invention utilizes the vaporization of liquid oxygen to convert it into gaseous oxygen. It has a high storage capacity, is light in weight, is easy to carry, and is convenient to use. It does not require an external power supply. Through heat exchange with the external environment, liquid oxygen will automatically vaporize into gaseous oxygen for oxygen supply. The oxygen supply device is quiet and noiseless during use, which improves the comfort of the user experience.

[0019] (3) The portable liquid oxygen storage and supply device provided by the present invention is easy to operate and can be repeatedly filled with liquid oxygen. It also has a simple structure and a filling method that is easier to operate and controllable.

[0020] (4) The portable liquid oxygen storage and supply device provided by the present invention adopts a dual-channel oxygen output pipeline design, which improves the liquid oxygen leakage prevention performance when the tank is tipped over; a safety valve group is installed, and when the internal pressure of the tank reaches the set pressure of the safety valve, the safety valve will open to release the pressure, thereby ensuring the safety of the use process.

[0021] (5) The portable liquid oxygen storage and supply device provided by the present invention is equipped with an oxygen display module, which can be used to determine in real time through the outer cover observation window whether there is oxygen output in the tank body according to the position of the small float in the transparent oxygen display module.

[0022] (6) The portable liquid oxygen storage and supply device provided by the present invention is widely applicable to people working and living in plateau areas, especially those who live and work in high altitude areas for a long time, and those who are in the hypoxia adaptation period when they first enter the plateau; at the same time, it is also suitable for special groups of people who need continuous oxygen inhalation due to physical illness and other reasons, and have the need for outdoor activities. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A front full cross-sectional view of the portable liquid oxygen storage and supply device provided by the present invention;

[0025] Figure 2 A side full-section view of the portable liquid oxygen storage and supply device provided by the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the liquid oxygen storage tank in the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the liquid oxygen filling valve group in the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the safety valve group in the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the oxygen output display module in the present invention;

[0030] In the figure: 1-liquid oxygen storage tank, 2-safety valve group, 3-liquid oxygen filling valve group, 4-vaporization coil, 5-oxygen output display module, 6-outer cover, 7-filling valve fixing screws, 101-outer liner, 102-inner liner, 103-upper platform, 104-fixing ring, 105-stainless steel gas oxygen conduit, 106-stainless steel liquid oxygen conduit, 201-safety valve group valve body, 202-safety valve group first inlet, 203-safety valve group second inlet, 204-safety pressure valve, 205-balanced pressure valve, 206-first air outlet, 301-filling valve group valve body, 302-filling valve core, 303-emptying valve core, 304-O-ring, 305-pan seal, 306-valve body pressure plate, 307-sealing gasket, 308-filling liquid oxygen flow guide tube, 309-emptying plug, 501-oxygen output display block, 502-air inlet, 503-small buoy, 504-second air outlet. DETAILED DESCRIPTION

[0031] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0032] 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.

[0033] 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.

[0034] like Figure 1 and Figure 2As shown, a portable liquid oxygen storage and supply device provided by the present invention includes a liquid oxygen storage tank body 1, a liquid oxygen filling valve group 3, a vaporization coil 4, a safety valve group 2, an oxygen output display module 5 and an outer cover 6. The liquid oxygen storage tank body 1 is a main container for storing liquid oxygen. The liquid oxygen filling valve group 3 is installed at the top liquid inlet of the liquid oxygen storage tank body 1, and is used to fill the liquid oxygen storage tank body 1 with liquid oxygen; the vaporization coil 4 is wrapped around the top liquid inlet of the liquid oxygen storage tank body 1, connecting the interior of the liquid oxygen storage tank body 1 and the safety valve group 2, and the safety valve group 2 is installed on the upper part of the liquid oxygen storage tank body 1 to release the pressure inside the liquid oxygen storage tank body 1; the oxygen output display module 5 is fixed on the upper part of the liquid oxygen storage tank body 1, and is used to display the oxygen output state of the liquid oxygen storage tank body 1, and can realize the connection between the storage and supply device and an external breathing mask or nasal oxygen tube, so as to supply oxygen to the human body; the outer cover 6 covers the upper part of the liquid oxygen storage tank body 1, and is used to protect each component.

[0035] like Figure 3 As shown, the liquid oxygen storage tank body 1 is a hollow vacuum insulation structure, a flat columnar structure, and its cross section is preferably an ellipsoidal cross section; the tank body with an ellipsoidal cross section is easy to carry; protruding or recessed transverse ribs are arranged on the front and back of the liquid oxygen storage tank body 1, and these transverse ribs serve to strengthen the compressive strength of the main body of the portable liquid oxygen storage and supply device, while being convenient for users to hold and prevent slipping. In another embodiment, an identification mark can be set on the main body of the portable liquid oxygen storage and supply device to facilitate the personalized identity setting of the portable liquid oxygen storage and supply device.

[0036] The liquid oxygen storage tank body 1 comprises an outer liner 101, an inner liner 102, an upper platform 103, and a fixing ring 104. The upper ends of the inner liner 102 and the outer liner 101 are provided with protruding mouths, which serve as liquid inlets for filling liquid oxygen; a horizontal upper platform 103 is provided at the connection between the liquid inlet and the outer liner 101, and a fixing ring 104 is fixedly installed on the top of the liquid inlet; a liquid oxygen filling valve group 3 is installed inside the liquid inlet, and is used to fill liquid oxygen from the outside into the liquid oxygen storage tank body 1; a vaporizing coil 4 is spirally coiled on the outside of the liquid inlet of the liquid oxygen storage tank body 1, and is used to perform heat exchange between the low-temperature oxygen in the vaporizing coil 4 and the outside; a safety valve group 2 is arranged on the upper platform 103 of the liquid oxygen storage tank body 1, and the safety valve group 2 is provided with a certain safety pressure threshold, and the safety pressure threshold can be adjusted according to the external atmospheric pressure value of the area where the portable liquid oxygen storage and supply device is used; the oxygen output display module 5 is installed on the upper platform 103 of the liquid oxygen storage tank body 1, and is used to display the liquid oxygen output; the outer cover 6 is a cup-shaped cover body, which can be inverted on the upper platform 103 of the liquid oxygen storage tank body 1, and is fixedly connected to the upper platform 103 by screws, and the outer cover is used to protect the liquid oxygen filling valve group 3, the vaporization coil 4, the safety valve group 2 and the oxygen output display module 5.

[0037] One end of the stainless steel oxygen gas conduit 105 and the stainless steel liquid oxygen conduit 106 are welded to the inner tank opening of the liquid oxygen storage tank 1, and the other end of the stainless steel oxygen gas conduit 105 opens upward, and the other end of the stainless steel liquid oxygen conduit 106 opens downward and penetrates into the bottom of the tank. The advantage of this design is that when the tank is tilted, it is guaranteed that there is always a stainless steel pipe for gaseous oxygen output.

[0038] like Figure 4 As shown, the liquid oxygen filling valve group 3 is the main component of liquid oxygen filling, including a filling valve group valve body 301, a filling valve core 302, an emptying valve core 303, an O-ring 304, a flood seal 305, a valve body pressure plate 306, a sealing gasket 307, a filling liquid oxygen flow guide tube 308, and an emptying plug 309. The filling valve group valve body 301 is a T-shaped structure. The top of the filling valve group valve body 301 is provided with a through hole that matches the fixing ring 104, which is screwed in 7 is tightly locked on the mouth fixing ring 104 of the liquid oxygen storage tank body 1, and the screws 7 are preferably 8. The lower part of the valve body 301 of the filling valve group is inserted into the liquid inlet; a valve body pressing plate 306 is installed at the bottom of the valve body 301 of the filling valve group, and a sealing gasket 307 is provided on the outside of the valve body pressing plate 306. The material of the sealing gasket 307 is low-temperature resistant polytetrafluoroethylene. When the portable liquid oxygen storage and supply device is in normal use, the sealing gasket is tightly in contact with the liquid The inner mouth of the oxygen storage tank 1 is sealed to ensure that the liquid oxygen will not leak out; a groove is provided on the middle outer wall of the filling valve group valve body 301, and an O-ring 304 is installed in the groove. A groove is provided on the bottom outer wall, and a pan seal 305 is installed in the groove to play a sealing role; a filling valve core 302 and an emptying valve core 303 are provided inside the filling valve group valve body 301, and an emptying plug 303 installed on the filling valve group valve body 301 is provided below the emptying valve core 303. 09. When the liquid oxygen storage tank body 1 is tilted, it is used to prevent liquid oxygen from entering the emptying valve core 303. A filling liquid oxygen guide tube 308 is provided below the filling valve core 302, and the filling liquid oxygen guide tube 308 is inserted into the interior of the liquid oxygen storage tank body 1; when filling liquid oxygen, the filling valve core 302 and the emptying valve core 303 are pushed open at the same time, so that the gas inside the tank body can be discharged while filling liquid oxygen, and the liquid oxygen will enter the interior of the liquid oxygen storage tank body 1 along the filling conduit 308.

[0039] like Figure 5 As shown, the safety valve group 2 includes a safety valve group valve body 201, a first safety valve group inlet 202, a second safety valve group inlet 203, a safety pressure valve 204, a balanced pressure valve 205, and a first air outlet 206. The safety valve group valve body 201 is fixed to the upper end platform 103 of the liquid oxygen storage tank body 1 by two screws. The upper part of the safety valve group 2 is provided with a balanced pressure valve 205 and a safety pressure valve 204. The first inlet 202 and the second inlet 203 are respectively provided on both sides of the safety valve group 2. The upper part of the safety valve group 2 near the first inlet 202 is provided with a first air outlet 206;

[0040] The vaporizing coil 4 is two groups of aluminum tubes spirally wound along the liquid inlet, and the two groups of aluminum tubes are divided into inner aluminum tubes and outer aluminum tubes. One end of the two groups of aluminum tubes is fixed inside the liquid oxygen filling valve group 3, and the end of the inner aluminum tube fixed inside the liquid oxygen filling valve group 3 is connected to the stainless steel liquid oxygen conduit 106, and the other end of the inner aluminum tube is connected to the first inlet 202 of the safety valve group 2 through a silicone hose. The end of the outer aluminum tube fixed inside the liquid oxygen filling valve group 3 is connected to the stainless steel gas oxygen conduit 105, and the other end of the outer aluminum tube is connected to the second inlet 203 of the safety valve group 2 through a silicone hose.

[0041] The balanced pressure valve 205 is a channel for conducting the gas and liquid inside the liquid oxygen storage tank 1. The pressure threshold is preferably 0.1MPa. When the pressure inside the liquid oxygen storage tank 1 reaches 0.1MPa, the balanced pressure valve 205 will automatically open, and the internal gas will enter the safety valve group 2 through the second inlet 203 and be discharged through the first outlet 206. The pressure threshold of the safety pressure valve 204 is preferably 0.15MPa. When the pressure inside the liquid oxygen storage tank 1 continues to rise and reaches 0.15MPa, the safety pressure valve 204 will automatically open and release the pressure to the outside through the exhaust hole connected to the outside to ensure that the pressure inside the tank will not continue to rise. In a specific embodiment, the balanced pressure valve 205 and the safety pressure valve 204 are arranged adjacent to each other, and the two are arranged between the first inlet 202 and the second inlet 203.

[0042] like Figure 6 As shown, the oxygen output display module 5 includes an oxygen output display block 501, an air inlet 502, a small buoy 503, and a second air outlet 504. The oxygen output display block 501 is fixed on the upper platform 103 of the liquid oxygen storage tank body 1 by screws. The upper part of the oxygen output display block 501 is a stepped structure, and the two sections of the step are respectively provided with through holes, which are connected inside the oxygen output display block 501; the top of the through hole of the low step is provided with an air inlet 502, and the air inlet 502 is connected to the air outlet 206 of the safety valve group 2 through a silicone hose. The top of the through hole of the high step is provided with a second air outlet 504, which can realize the connection between the storage and supply device and the external breathing mask or nasal oxygen tube, so as to supply oxygen to the human body; a small buoy 503 that can move up and down is provided inside the through hole, and by observing the up and down position of the oxygen small buoy 503, it can be judged whether there is oxygen output inside the liquid oxygen storage tank. The oxygen output display block 501 of the oxygen output display module 5 is a transparent body made of organic glass.

[0043] When using a portable liquid oxygen storage and supply device:

[0044] When liquid oxygen needs to be filled, the external liquid oxygen filling tank body will push down and open the filling valve core 302 and the emptying valve core 303 of the liquid oxygen filling valve group 3 at the same time. At this time, the liquid oxygen will flow into the liquid oxygen storage tank body 1 through the guide pipe 308 of the liquid oxygen filling valve group 3. At the same time, the emptying valve core 303 will also open the emptying plug 309 after being pushed open, so that the air in the liquid oxygen storage tank body 1 can be discharged, so that liquid oxygen can be filled in. During normal use or storage and transportation, the filling valve core 302 and the emptying valve core 303 of the liquid oxygen filling valve group 3 will be reset and closed at the same time, and the emptying plug 309 will also rebound and reset. The liquid oxygen stored in the liquid oxygen storage tank body 1 will continue to vaporize, and the vaporized gaseous oxygen will enter the outlet safety valve group 2 through the spirally wound vaporization coil 4, and further enter the oxygen output display block 5. The oxygen is output from the second air outlet 504 of the oxygen output display block 5 and can be connected to an external breathing mask or nasal oxygen tube to achieve the purpose of oxygen supply.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A portable liquid oxygen storage and supply device, characterized in that: The invention comprises a liquid oxygen storage tank body (1), a liquid oxygen filling valve group (3), a vaporizing coil (4), a safety valve group (2), an oxygen output display module (5) and an outer cover (6); the liquid oxygen storage tank body (1) is a main container for storing liquid oxygen; the liquid oxygen filling valve group (3) is installed at the top liquid inlet of the liquid oxygen storage tank body (1) and is used to fill the liquid oxygen storage tank body (1) with liquid oxygen; the vaporizing coil (4) is wound around the top liquid inlet of the liquid oxygen storage tank body (1) and is connected to the liquid oxygen storage tank body (1). ) and a safety valve group (2), the safety valve group (2) being installed on the upper part of the liquid oxygen storage tank body (1) and used to release the pressure inside the liquid oxygen storage tank body (1); an oxygen output display module (5) being fixed on the upper part of the liquid oxygen storage tank body (1) and used to display the oxygen output status of the liquid oxygen storage tank body (1) and being capable of being connected to an external oxygen inhalation device to supply oxygen to the human body; an outer cover (6) covering the upper part of the liquid oxygen storage tank body (1) and used to protect various components; The liquid oxygen storage tank body (1) is a hollow vacuum insulation structure, comprising an outer liner (101), an inner liner (102), an upper platform (103), and a fixing ring (104); the upper ends of the inner liner (102) and the outer liner (101) are provided with protruding openings, which serve as liquid inlets for filling liquid oxygen; a horizontal upper platform (103) is provided at the connection between the liquid inlet and the outer liner (101); and a fixing ring (104) is fixedly installed at the top of the liquid inlet; The liquid oxygen filling valve group (3) comprises a filling valve group valve body (301), a filling valve core (302), an exhaust valve core (303), an O-ring (304), a flood seal (305), a valve body pressure plate (306), a sealing gasket (307), a filling liquid oxygen flow guide tube (308), and an exhaust plug (309). The filling valve group valve body (301) is a T-shaped structure. The top of the filling valve group valve body (301) is provided with a through hole that matches the fixing ring (104). The lower part of the filling valve group valve body (301) is inserted into the liquid inlet. The bottom of the filling valve group valve body (301) is installed with a valve body pressure plate (306). The filling valve group valve body (301) A filling valve core (302) and an emptying valve core (303) are provided inside the tank. An emptying plug (309) mounted on the valve body (301) of the filling valve group is provided below the emptying valve core (303). A filling liquid oxygen guide pipe (308) is provided below the filling valve core (302). The filling liquid oxygen guide pipe (308) is inserted into the interior of the liquid oxygen storage tank body (1). A stainless steel gas oxygen conduit (105) and one end of a stainless steel liquid oxygen conduit (106) are welded to the mouth of the inner liner (102) of the liquid oxygen storage tank body (1). The other end of the stainless steel gas oxygen conduit (105) opens upward, and the other end of the stainless steel liquid oxygen conduit (106) opens downward and penetrates into the bottom of the tank body.

2. The portable liquid oxygen storage and supply device according to claim 1, characterized in that: The liquid oxygen filling valve group (3) is installed inside the liquid inlet and is used to fill liquid oxygen from the outside into the liquid oxygen storage tank (1); the vaporizing coil (4) is spirally coiled on the outside of the liquid inlet of the liquid oxygen storage tank (1) and is used to exchange heat between the low-temperature oxygen in the vaporizing coil (4) and the outside; the safety valve group (2) is arranged on the upper platform (103) of the liquid oxygen storage tank (1), and the safety valve group (2) is provided with a certain safety pressure threshold, and the safety pressure threshold is adjusted according to the outside atmospheric pressure value of the area where the portable liquid oxygen storage and supply device is used.

3. The portable liquid oxygen storage and supply device according to claim 2 is characterized in that: A sealing gasket (307) is provided on the outside of the valve body pressure plate (306). The sealing gasket (307) is made of low-temperature resistant polytetrafluoroethylene. When the portable liquid oxygen storage and supply device is in normal use, the sealing gasket is tightly sealed with the inner tank opening of the liquid oxygen storage tank (1) to ensure that the liquid oxygen does not leak out. A groove is provided on the middle outer wall of the valve body (301) of the filling valve assembly. An O-ring (304) is installed in the groove. A groove is provided on the bottom outer wall. A pan seal (305) is installed in the groove to play a sealing role.

4. The portable liquid oxygen storage and supply device according to claim 3 is characterized in that: The safety valve group (2) comprises a safety valve group valve body (201), a first safety valve group inlet (202), a second safety valve group inlet (203), a safety pressure valve (204), a balance pressure valve (205), and a first gas outlet (206); the safety valve group valve body (201) is fixed on the upper platform (103) of the liquid oxygen storage tank (1); the upper part of the safety valve group (2) is provided with a balance pressure valve (205) and a safety pressure valve (204); the first inlet (202) and the second inlet (203) are respectively provided on both sides of the safety valve group (2); and the upper part of the safety valve group (2) close to the first inlet (202) is provided with a first gas outlet (206).

5. The portable liquid oxygen storage and supply device according to claim 4, characterized in that: The vaporizing coil (4) comprises an inner aluminum tube and an outer aluminum tube, one end of each of the two sets of aluminum tubes is fixed inside the liquid oxygen filling valve group (3), and the end of the inner aluminum tube fixed inside the liquid oxygen filling valve group (3) is connected to the stainless steel liquid oxygen conduit (106), and the other end of the inner aluminum tube is connected to the first inlet (202) of the safety valve group (2) through a silicone hose; the end of the outer aluminum tube fixed inside the liquid oxygen filling valve group (3) is connected to the stainless steel gas oxygen conduit (105), and the other end of the outer aluminum tube is connected to the second inlet (203) of the safety valve group (2) through a silicone hose.

6. The portable liquid oxygen storage and supply device according to claim 5, characterized in that: The pressure value threshold of the balance pressure valve (205) is 0.1 MPa; the pressure threshold of the safety pressure valve (204) is 0.15 MPa.

7. The portable liquid oxygen storage and supply device according to any one of claims 1 to 6, characterized in that: The oxygen output display module (5) comprises an oxygen output display block (501), an air inlet (502), a small buoy (503), and a second air outlet (504). The oxygen output display block (501) is fixed on the upper platform (103) of the liquid oxygen storage tank (1). The upper part of the oxygen output display block (501) is a stepped structure. Two sections of the step are respectively provided with through holes, and the through holes are connected inside the oxygen output display block (501). The top of the through hole of the lower step is provided with an air inlet (502), and the air inlet (502) is connected to the first air outlet (206) of the safety valve group (2) through a silicone hose. The top of the through hole of the higher step is provided with a second air outlet (504), and a small buoy (503) that can move up and down is provided inside the through hole. The oxygen output display block (501) is a transparent body made of organic glass.

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