CN216158820U

CN216158820U - Portable liquid oxygen supply device

Info

Publication number: CN216158820U
Application number: CN202122295000.7U
Authority: CN
Inventors: 蒋云翔; 刘昊楠
Original assignee: Tibet Youyang Health Technology Co ltd
Current assignee: Tibet Youyang Health Technology Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-01
Anticipated expiration: 2031-09-18

Abstract

The application discloses portable liquid oxygen apparatus of oxygen supply includes: the shell, the liquid oxygen storage tank and the integrated functional valve; wherein, the liquid oxygen storage tank is sleeved in the shell, and the integrated function valve is fixedly arranged at the upper end of the liquid oxygen storage tank; the integrated function valve includes: the device comprises a valve seat, an emptying valve, a balance valve and a breathing valve; the valve seat is used for being arranged on the liquid oxygen storage tank, and an emptying pipeline and an air using pipeline are arranged in the valve seat; the emptying valve is fixed on the valve seat, the first end of the emptying pipeline is communicated with the emptying valve, and the second end of the emptying pipeline is used for being communicated with a gas phase area in the liquid oxygen storage tank; balance valve and breather valve all set firmly on the disk seat, the oxygen export of balance valve and the inlet end intercommunication of breather valve, the first end of using the gas circuit be used for with the inside intercommunication of liquid oxygen storage tank, the inlet end intercommunication of second end and balance valve. The utility model provides a functional valve overall arrangement of liquid oxygen storage tank is mixed and disorderly among the correlation technique, and the integrated level is lower, awkward problem.

Description

Portable liquid oxygen supply device

Technical Field

The application relates to the technical field of liquid oxygen suppliment, particularly, relates to a portable liquid oxygen apparatus of oxygen suppliment.

Background

For the liquid oxygen storage tank, liquid oxygen is required to be gasified and discharged for use during use, the inside is decompressed, and the inside air is discharged during filling. Therefore, a plurality of valves are required to be arranged on the liquid oxygen storage tank to realize control of different functions. At present, all adopt solitary functional valve to use on the liquid oxygen storage tank, can install different functional valves in the different positions of storage tank, lead to the valve overall arrangement to be mixed and disorderly, the integrated level is lower, and it is inconvenient to use.

Aiming at the problems of disordered layout, low integration level and inconvenient use of functional valves of a liquid oxygen storage tank in the related technology, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a portable liquid oxygen apparatus of oxygen supply to solve the functional valve overall arrangement of liquid oxygen storage tank in the correlation technique and be mixed and disorderly, the integrated level is lower, awkward problem.

In order to achieve the above object, the present application provides a portable liquid oxygen supply apparatus comprising: the shell, the liquid oxygen storage tank and the integrated functional valve; wherein the content of the first and second substances,

the liquid oxygen storage tank is sleeved in the shell, and the integrated functional valve is fixedly arranged at the upper end of the liquid oxygen storage tank;

the integrated function valve includes: the device comprises a valve seat, an emptying valve, a balance valve and a breathing valve; wherein the content of the first and second substances,

the valve seat is used for being installed on the liquid oxygen storage tank, and an emptying pipeline and an air using pipeline are arranged in the valve seat;

the emptying valve is fixed on the valve seat, the first end of the emptying pipeline is communicated with the emptying valve, and the second end of the emptying pipeline is used for being communicated with a gas phase area in the liquid oxygen storage tank;

the balance valve with the breather valve all sets firmly on the disk seat, the oxygen export of balance valve with the inlet end intercommunication of breather valve, the first end of gas pipeline be used for with the inside intercommunication of liquid oxygen storage tank, the second end with the inlet end intercommunication of balance valve.

Furthermore, the breather valve comprises a pulse breathing channel and a direct-current breathing channel which are communicated with the air outlet end of the balance valve, and the pulse breathing channel and the direct-current breathing channel are respectively provided with a pulse adjusting piece and a direct-current adjusting piece;

the pulse adjusting piece and the direct current adjusting piece are respectively used for adjusting the opening and closing of the pulse breathing channel and the direct current breathing channel.

Further, the balance valve comprises a balance valve body fixedly arranged on the valve seat, a first channel is arranged in the balance valve body, a first end of the first channel is communicated with a second end of the gas pipeline, and a second end of the first channel is communicated with a gas inlet end of the breather valve;

the valve body is further provided with a plurality of pressure relief channels, the pressure relief channels are connected in parallel to the first channel, each pressure relief channel is internally provided with a pressure relief mechanism, and the pressure relief mechanisms can open the corresponding pressure relief channels to relieve pressure under different pressure conditions.

Further, the purge valve includes: the air release valve body, the air rod, the pressure release handle and the sealing assembly are arranged; wherein the content of the first and second substances,

the emptying valve body is fixedly arranged on the valve seat, a valve cavity is arranged in the emptying valve body, an air inlet communicated with the first end of the emptying pipeline is arranged at the lower end of the valve cavity, and an air guide pipe is communicated with one side of the valve cavity;

the air rod is arranged in the valve cavity and can move along the axial direction of the valve cavity, and the sealing assembly is arranged in the valve cavity and sleeved on the air rod so as to enable the valve cavity and the air guide pipe to be in a sealing state;

the upper end of the air rod extends out of the valve cavity, the pressure relief handle comprises a cam rotating part, and the cam rotating part is abutted to the upper end of the air rod;

and the gas rod is sleeved with a return spring.

Furthermore, a filling pipe is arranged in the valve seat, the first end of the filling pipe is communicated with a filling pipeline of the liquid oxygen storage tank, and the second end of the filling pipe extends out of the valve seat and is connected with a filling valve;

the filling valve comprises a filling male head which can be matched in a plug-in mode and a filling female head which is connected with the filling pipeline; wherein the content of the first and second substances,

the filling male head comprises a male head valve body and a male head valve rod which is arranged in the male head valve body and can move along the axial direction of the male head valve body;

the filling female head comprises a female valve body and a female valve rod which is arranged in the female valve body and can move along the axial direction of the female valve body; when the male valve body and the female valve body are inserted, the male valve rod and the female valve rod are pushed against each other, so that the male valve body is communicated with the female valve body;

the female valve body is provided with a guide groove along the axial direction and a clamping groove communicated with the guide groove along the circumferential direction; and a positioning column is arranged on the male valve body along the radial direction of the male valve body, and the positioning column can be inserted into the guide groove and clamped in the clamping groove.

Further, the liquid oxygen storage tank includes: the vacuum tank comprises an outer tank body, an inner tank body and a vacuum layer arranged between the outer tank body and the inner tank body; wherein the content of the first and second substances,

a filling pipeline is arranged on the outer side of the inner tank body, and is spirally sleeved on the outer side of the inner tank body;

the liquid outlet end of the filling pipeline extends into the inner tank body, and the liquid inlet end of the filling pipeline extends out of the outer tank body.

Furthermore, the liquid outlet end of the filling pipeline extends into the inner tank body from the lower end of the inner tank body, and the liquid inlet end of the filling pipeline extends out of the outer tank body from the upper end of the inner tank body;

the liquid outlet end of the filling pipeline vertically extends into the gas phase area of the inner tank body;

the upper end of the inner tank body is also provided with an air outlet pipeline which is spirally arranged, the air inlet end of the air outlet pipeline is communicated with the upper end of the inner tank body, and the air outlet end of the air outlet pipeline extends out of the outer tank body.

Further, the upper end of the inner tank body is connected with the upper end of the outer tank body through a connecting piece, so that the inner tank body is suspended in the air; the connecting piece is made of a material with low thermal conductivity.

The measuring tank further comprises a capacitance liquid level meter, and a measuring end of the capacitance liquid level meter extends into the inner tank body;

the capacitance level gauge includes: an insulating spacer and a plate body; wherein the content of the first and second substances,

the polar plate main part sets up to two and locates relatively the both sides of insulating barrier member, the interval is equipped with a plurality of disconnected temperature breachs in the polar plate main part, disconnected temperature breach will the polar plate main part divide into disconnected temperature portion and the plate body portion of interval arrangement.

Further, a plurality of insulating spacers are arranged and correspond to the plate body parts; the insulating isolation pieces are arranged in a square shape, and each plate body part is fixed on the corresponding insulating isolation piece;

the insulating isolation piece is characterized by further comprising a main supporting pipe made of a low-thermal-conductivity material, and the main supporting pipe penetrates through the insulating isolation pieces in sequence.

In the embodiment of the application, the shell, the liquid oxygen storage tank and the integrated energy collecting valve are arranged; wherein, the liquid oxygen storage tank is sleeved in the shell, and the integrated function valve is fixedly arranged at the upper end of the liquid oxygen storage tank; the integrated function valve includes: the device comprises a valve seat, an emptying valve, a balance valve and a breathing valve; the valve seat is used for being installed on the liquid oxygen storage tank, and an emptying pipeline and an air using pipeline are arranged in the valve seat; the emptying valve is fixed on the valve seat, the first end of the emptying pipeline is communicated with the emptying valve, and the second end of the emptying pipeline is used for being communicated with a gas phase area in the liquid oxygen storage tank; balance valve and breather valve all set firmly on the disk seat, the oxygen export of balance valve and the inlet end intercommunication of breather valve, the first end of using the gas pipeline be used for with the inside intercommunication of liquid oxygen storage tank, the inlet end intercommunication of second end and balance valve, integrated atmospheric valve has been reached on a disk seat, the balance valve, breather valve and atmospheric valve and use the purpose of gas pipeline, thereby realized the overall arrangement of optimizing a plurality of functional valves, improve the integrated level of functional valve, the more technical effect that the user of being convenient for used, and then the functional valve overall arrangement of liquid oxygen storage tank is mixed and disorderly among the correlation technique has been solved, the integrated level is lower, awkward problem.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural diagram according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a top view of an integrated function valve according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an axial structure of an integrated function valve according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the structure of an evacuation valve according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an axial structure of an evacuation valve according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a liquid oxygen storage tank according to an embodiment of the present application;

FIG. 7 is a schematic sectional view of a liquid oxygen storage tank according to an embodiment of the present application;

FIG. 8 is a schematic view of the construction of a filling valve according to an embodiment of the present application;

FIG. 9 is a schematic view of the construction of a filling female head according to an embodiment of the present application;

FIG. 10 is a schematic view of a filling male in accordance with an embodiment of the present application;

FIG. 11 is a schematic diagram of the structure of a capacitive liquid level gauge according to an embodiment of the present application;

FIG. 12 is an enlarged schematic view of a portion A of FIG. 11;

FIG. 13 is a schematic diagram of a top view of a capacitive liquid level gauge;

FIG. 14 is an enlarged schematic view of detail B of FIG. 13;

FIG. 15 is a schematic diagram of an axial structure of the capacitance level gauge;

fig. 16 is an enlarged schematic view of a portion C of fig. 15;

FIG. 17 is a schematic structural view of a plate body according to an embodiment of the present application;

wherein, 1 polar plate main body, 101 temperature-breaking part, 102 temperature-breaking notch, 103 plate body part, 2 main supporting tube, 3 groove, 4 insulating isolator,

5 corrugated pipe, 6 sealing ring, 7 first fixing ring, 8 female valve body, 9 first spring, 10 second sealing gasket, 11 clamping groove, 12 guide groove, 13 male joint inserting part, 14 female valve rod, 15 first red copper sealing gasket, 16 first sealing gasket, 17 positioning column, 18 fourth sealing gasket, 19 male valve body, 20 second spring, 21 male valve rod, 22 second red copper sealing gasket, 23 third sealing gasket, 24 filling female head, 25 filling male head,

26 pressure relief handle, 261 cam rotation part, 27 valve body, 28 valve cavity, 281 main cavity, 282 primary seal cavity, 283 secondary seal cavity, 29 secondary seal piece, 30 convex ring, 31 vent hole, 32 pressure air cap, 33 return spring, 34 air rod, 35 annular groove, 36 primary seal piece, 37 air guide pipe,

38 outer tank, 39 inner tank, 40 filling pipeline, 401 liquid inlet end, 402 liquid outlet end, 41 vacuum layer, 42 gas outlet pipeline, 421 gas outlet end, 422 gas inlet end, 43 connecting piece,

44 valve seat, 45 balance valve, 46 breather valve, 47 air pipeline, 48 air release valve, 49 air release pipeline,

50 filling valves, 51 filling pipes, 52 shells, 53 visual windows, 54 handles, 55 capacitance liquid level meters and 56 liquid oxygen storage tanks.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 3, an embodiment of the present application provides a portable liquid oxygen supply apparatus, including: housing 52, liquid oxygen reservoir 56 and integrated functioning valves; wherein the content of the first and second substances,

the liquid oxygen storage tank 56 is sleeved in the shell 52, and the integrated function valve is fixedly arranged at the upper end of the liquid oxygen storage tank 56;

the integrated function valve includes: valve seat 44, blow valve 48, balancing valve 45 and breather valve 46; wherein the content of the first and second substances,

the valve seat 44 is used for being installed on the liquid oxygen storage tank 56, and the emptying pipeline 49 and the gas using pipeline 47 are arranged in the valve seat 44;

a vent valve 48 is fixed on the valve seat 44, and a first end of a vent pipeline 49 is communicated with the vent valve 48, and a second end is used for being communicated with a gas phase area in the liquid oxygen storage tank 56;

the balance valve 45 and the breather valve 46 are both fixedly arranged on the valve seat 44, an oxygen outlet of the balance valve 45 is communicated with an air inlet end 422 of the breather valve 46, a first end of the air pipeline 47 is used for being communicated with the interior of the liquid oxygen storage tank 56, and a second end of the air pipeline is communicated with the air inlet end 422 of the balance valve 45.

At present, oxygen supply equipment in the market mainly uses a high-pressure gas cylinder, a small amount of liquid oxygen supply products are bulky and cannot be carried, and the high-pressure gas cylinder can be portable but has the risks of short endurance time and low safety factor. The oxygen supply equipment which is safe, reliable and long in endurance is provided for the plateau and respiratory disease personnel to move outdoors for a long time, mass production can be realized, and the liquid storage capacity of the liquid oxygen storage tank is 1.4L.

In this embodiment, the portable liquid oxygen supply apparatus comprises a housing, a liquid oxygen storage tank, and an integrated function valve, wherein the integrated function valve mainly comprises a valve seat 44, an air release valve 48, a balance valve 45, and a breather valve 46, wherein the valve seat 44 is fixed on the liquid oxygen storage tank when in use, for example, is installed at the upper end of the liquid oxygen storage tank. The release valve 48, the balance valve 45 and the breather valve 46 are functional valves fixed on the valve seat 44, and when the valve seat 44 is fixed on the liquid oxygen storage tank, the release valve 48, the balance valve 45 and the breather valve 46 are also synchronously fixed on the liquid oxygen storage tank. In this embodiment, the vent valve 48 is used to vent the air inside when filling the liquid oxygen tank with liquid oxygen, so that the vent valve 48 is connected to the vent line 49 in the valve seat 44, and when the valve seat 44 is mounted on the liquid oxygen tank, the vent line 49 is synchronously in communication with the gas phase region in the liquid oxygen tank.

The balance valve 45 is used for adjusting the pressure in the liquid oxygen storage tank, and the pressure in the liquid oxygen storage tank is mainly generated by oxygen pressure accumulation exerted by liquid oxygen, so that the pressure is adjusted in a mode that a pressure relief part of the balance valve 45 is opened to relieve pressure when a set condition is reached, and the internal pressure of the liquid oxygen storage tank is balanced. Therefore, the balancing valve 45 is connected to the gas line 47, and the gas line 47 is simultaneously connected to the inside of the liquid oxygen tank when the valve seat 44 is mounted. The balance valve 45 is used for adjusting the pressure when the internal pressure of the liquid oxygen storage tank is too high, and when the internal pressure is stable, the gas generated by the volatilization of the liquid oxygen can enter the breather valve 46 through the balance valve 45, and the user can use the oxygen through the breather valve 46. The safety of the installation can be increased by the balancing valve 45.

In this embodiment, all integrate three functional valves commonly used with the pipeline that corresponds on same disk seat 44 with the liquid oxygen storage tank, integrated atmospheric valve 48 on a disk seat 44 promptly, balanced valve 45, breather valve 46 and atmospheric line 49 and with gas pipeline 47, thereby the overall arrangement of optimizing a plurality of functional valves has been realized, the integration level of functional valve is improved, the more be convenient for user carries out the technological effect that uses, and then the functional valve overall arrangement of liquid oxygen storage tank is mixed and disorderly among the correlation technique has been solved, the integration level is lower, awkward problem.

Further, in the present embodiment, a visual window 53 is provided on the housing 52, the current liquid storage amount and pressure can be displayed on the visual window 53, the visual window 53 can be installed on the upper end of the housing 52, and can be made of an LCD display screen, and the liquid level and internal pressure of the liquid oxygen can be collected by a level gauge and a pressure gauge installed in the liquid oxygen storage tank 56, and can be displayed by the LCD display screen.

In order to facilitate carrying the oxygen supply device, a handle 54 is further provided at the upper end of the housing 52, and a buckle is provided at the side, which can be carried in various ways such as a shoulder strap inclined step, a double-shoulder carrying, a waist strap, etc. The housing 52 may be made of a high strength nylon material.

As shown in fig. 2 to 3, the breather valve 46 includes a pulse breather channel and a direct-flow breather channel communicated with the air outlet end of the balance valve 45, and the pulse breather channel and the direct-flow breather channel are respectively provided with a pulse adjusting piece and a direct-flow adjusting piece;

the pulse regulating piece and the direct current regulating piece are respectively used for regulating the opening and closing of the pulse breathing channel and the direct current breathing channel.

Specifically, it should be noted that the breathing valve 46 includes two usage modes, namely a pulse mode and a direct current mode, the pulse mode is to discharge oxygen according to the breath of the user, and the pulse mode can be realized by a structure that a vacuum membrane is installed in the pulse breathing channel, and the consumption of oxygen can be greatly reduced. The direct current mode is that oxygen is discharged outwards all the time and is not limited by the respiration of a user, and the structure of the direct current mode is simpler compared with the pulse mode, and only a through direct current respiration channel is needed. In this embodiment, the output mode of the breather valve 46 can be selected by the user, and the mode can be selected by using the pulse adjusting member and the direct current adjusting member to select the desired oxygen discharging mode, so that the use is more flexible.

As shown in fig. 2 to 3, the balance valve 45 includes a balance valve body fixed on the valve seat 44, a first passage is provided in the balance valve body, a first end of the first passage is communicated with a second end of the gas pipeline 47, and a second end of the first passage is communicated with a gas inlet end of the breather valve 46;

the valve body 27 is further provided with a plurality of pressure relief channels, the pressure relief channels are connected in parallel to the first channel, a pressure relief mechanism is arranged in each pressure relief channel, and different pressure relief mechanisms can open the corresponding pressure relief channels to relieve pressure under different pressure conditions.

Specifically, it should be noted that the balancing valve 45 is composed of a balancing valve body, and a first passage and a pressure relief passage which start in the balancing valve body. When the pressure in the liquid oxygen storage tank meets the use requirement, the oxygen volatilized by the liquid oxygen can directly enter the breather valve 46 through the first passage. And when the too big pressure release that needs of pressure, then the pressure release mechanism on each pressure release passageway of accessible carries out the pressure release, and pressure release mechanism can be for the spring with the gasket constitution here, and spring and gasket are all installed in pressure release passageway, and under conventional state, the gasket can support the export at pressure release passageway tightly under the spring action for it is sealed between pressure release passageway and the first passageway. When the pressure in the first channel is overlarge, the air pressure pushes the sealing sheet and compresses the spring, so that the pressure relief channel is communicated with the first channel, and oxygen can be discharged through the pressure relief channel to be relieved.

As shown in fig. 4 to 5, the purge valve 48 includes: a vent valve body, air stem 34, pressure relief handle 26 and seal assembly; wherein the content of the first and second substances,

the emptying valve body is fixedly arranged on the valve seat 44, a valve cavity 28 is arranged in the emptying valve body, the lower end of the valve cavity 28 is provided with an air inlet communicated with the first end of the emptying pipeline, and one side of the valve cavity 28 is communicated with an air guide pipe 37;

the air rod 34 is arranged in the valve cavity 28 and can move along the axial direction of the valve cavity 28, and the sealing component is arranged in the valve cavity 28 and sleeved on the air rod 34 so as to enable the valve cavity 28 and the air guide pipe 37 to be in a sealing state;

the upper end of the air rod 34 extends out of the valve cavity 28, the pressure relief handle 26 comprises a cam rotating part 261, and the cam rotating part 261 is abutted with the upper end of the air rod 34;

the gas rod 34 is sleeved with a return spring 33.

In this embodiment, in order to facilitate emptying, the upper end of the pressure relief handle 26 may extend out of the upper end of the housing, i.e. a transverse through hole may be formed in the upper end of the housing, through which the pressure relief handle 26 may pass, and the length of the through hole should satisfy the rotation amplitude of the pressure relief handle. The valve cavity 28 is arranged in the valve body 27 along the axial direction, the air rod 34 is arranged in the valve cavity 28 of the valve body 27, and the air rod 34 can linearly move, such as up-and-down movement, in the valve cavity 28 along the axial direction of the valve body 27. The air inlet is arranged at the lower end of the valve cavity 28, and when the emptying valve is installed on the liquid oxygen storage tank, the air inlet of the valve cavity 28 is communicated with the inside of the liquid oxygen storage tank, so that the gas in the liquid oxygen storage tank can move to the lower end of the valve cavity 28. One side of the valve cavity 28 is communicated with a gas duct 37 for discharging the gas entering the valve cavity 28 from the gas duct 37. Since the liquid oxygen storage tank is required to be in a sealed state when in use, a sealing assembly is sleeved on the air rod 34 in the embodiment, and when the emptying valve is not required to be opened, the sealing assembly is located at a position which enables the position between the valve cavity 28 and the air guide pipe 37 to be in a sealed state.

Because the sealing component is fixedly sleeved on the air rod 34, the sealing component can synchronously move along with the air rod 34. In this embodiment, the downward movement of the air lever 34 is realized by the action of the pressure release handle 26, specifically, the pressure release handle 26 includes a cam rotation portion 261 and a handle portion, and the cam rotation portion 261 and the handle portion are integrally formed. Cam rotating portion 261 accessible round pin axle rotates the upper end of locating valve body 27, the upper end of gas pole 34 extends valve body 27 and is contradicted with cam rotating portion 261 and be connected, because the structural feature of cam rotating portion 261, when cam rotating portion 261 is rotatory under the exogenic action, can jack-up gas pole 34 downwards, make gas pole 34 downstream in valve chamber 28, thereby drive seal assembly synchronous downstream, break away from originally and keep the sealed position of encapsulated situation, air duct 37 this moment, just be in the connected state between valve chamber 28 and the liquid oxygen storage tank, the gas that is located the liquid oxygen storage tank is convenient for discharge from air duct 37.

In order to improve the sealing performance of the sealing assembly and the resetting after emptying, in this embodiment, a return spring 33 is further sleeved on the air rod 34, the return spring 33 can apply pressure to the sealing assembly to enable the sealing assembly to be tightly pressed at the sealing position, and the return spring 33 is compressed again after the air rod 34 moves downwards, so that when the cam rotating part 261 rotates backwards, the air rod 34 can automatically move upwards and reset under the action of the return spring 33. In order to make the cam rotating portion 261 continuously apply a pressing force to the air lever 34 after the rotation, a check portion is further provided on the cam rotating portion 261, that is, when no external force is applied, the cam rotating portion 261 is prevented from being directly returned by the return spring 33. Specifically, the check portion may be formed by a corner on the cam rotating portion 261.

As shown in fig. 4 to 5, the valve cavity 28 is sequentially provided with a main cavity 281, a primary seal cavity 282 and a secondary seal cavity 283 from bottom to top; the diameters of the main chamber 281, the primary seal chamber 282 and the secondary seal chamber 283 are gradually reduced;

the air inlet is arranged at the lower end of the main cavity 281, and the air duct 37 is communicated with the secondary sealing cavity 283.

Specifically, it should be noted that the gas rod 34 passes through the main chamber 281, the primary seal chamber 282 and the secondary seal chamber 283 in sequence, and extends out of the upper end of the valve body 27 after passing through the secondary seal chamber 283, and the gas enters the secondary seal chamber 283 and then is discharged from the gas guide pipe 37. Because the upper end of the valve body 27 is used as the mounting position of the driving part of the air rod 34, the air duct 37 is mounted on the side surface of the secondary sealing cavity 283, and the overall volume of the structure can be reduced while reasonable structural layout can be realized.

As shown in fig. 4 to 5, the seal assembly includes a primary seal 36 provided at an upper end of the main chamber 281 and a secondary seal 29 provided at an upper end of the primary seal chamber 282; the primary sealing element 36 and the secondary sealing element 29 are fixedly sleeved on the air rod 34.

Specifically, it should be noted that, in order to improve the sealing performance of the valve body 27, the sealing assembly in this embodiment is composed of a primary sealing element 36 and a secondary sealing element 29, and both the primary sealing element 36 and the secondary sealing element 29 are fixedly sleeved on the air rod 34. The valve body 27 has double sealing through the arrangement of the primary sealing member 36 and the secondary sealing member 29, so that the gas sealing pressure can reach 0.5-0.8 mpa. A vent gap is provided between the ring side of the primary seal 36 and the primary chamber 281, and between the ring side of the secondary seal 29 and the primary seal chamber 282, in which gas can flow, the end faces of the primary seal 36 and the secondary seal 29 sealing.

To facilitate the installation of the primary seal 36 and the secondary seal 29, the upper portion of the gas rod 34 is provided with a protruding ring 30, the upper end of the primary seal 36 abuts against the lower end of the protruding ring 30, and the lower end of the secondary seal 29 abuts against the upper end of the protruding ring 30. The primary seal 36 and the secondary seal 29 are both interference fit with the gas rod 34.

As shown in fig. 4 to 5, the air compressing device further comprises an air compressing cap 32 sleeved at the lower end of the air rod 34, the ring side of the air compressing cap 32 is fixedly connected with the main cavity 281, and the air rod 34 is slidably connected with the air compressing cap 32;

the air pressure cap 32 is provided with a vent hole 31 communicating the upper part and the lower part of the main cavity 281; a return spring 33 is disposed between the primary seal 36 and the displacer cap 32.

Specifically, it should be noted that the air compressing cap 32 is disposed in an annular shape and fixed at the lower portion of the air rod 34, the air compressing cap 32 is fixedly connected to the inner wall of the main cavity 281, the air rod 34 can freely slide in the air compressing cap 32, so that the air flows conveniently, the air compressing cap 32 is provided with a vent hole 31, the upper portion and the upper portion of the air compressing cap 32 are communicated through the vent hole 31, and the vent holes 31 can be circumferentially disposed in a plurality. Meanwhile, the installation of the return spring 33 is facilitated through the air compression cap 32, namely, two ends of the return spring 33 are fixedly connected with the primary sealing element 36 and the air compression cap 32 respectively.

In order to facilitate the installation of the return spring 33, the annular grooves 35 are formed in the upper end of the air compressing cap 32 and the lower end of the primary sealing element 36, and the upper end and the lower end of the return spring 33 are respectively clamped in the corresponding annular grooves 35, so that the offset of the return spring 33 in the movement process can be avoided.

To further improve the sealing of the valve body 27, the primary seal 36 is provided as a hard seal and the secondary seal 29 is provided as a soft seal. The hard sealing piece needs higher leakproofness, can regard as first seal structure, and the hard sealing piece sets up to red copper sealing washer, and soft sealing piece can regard as second seal structure, and soft sealing piece sets up to rubber packing.

Furthermore, in this embodiment, an opening ring is further sleeved on the upper end of the air rod 34, and the opening ring is located in the secondary sealing cavity 283 and at the upper end of the rubber sealing pad.

As shown in fig. 4 to 5, the rubber packing is provided in a tapered or convex shape, and the upper portion thereof extends into the secondary seal cavity 283. The portion of the rubber seal that extends into secondary seal cavity 283 also has a vent gap between the portion of the rubber seal that extends into secondary seal cavity 283 and secondary seal cavity 283, which portion of the structure enhances the structural strength of the rubber seal.

In order to further improve the function integration of the function valve, a filling pipeline is further arranged in the valve seat 44, and a first end of the filling pipeline is used for being communicated with a filling pipe of the liquid oxygen storage tank, and a second end of the filling pipeline is used for being connected with the filling valve. After the two ends of the filling pipeline are connected with the filling pipe and the filling valve in the liquid oxygen storage tank, the liquid oxygen filling of the liquid oxygen storage tank can be realized.

The gas line 47, valve seat 44, balance valve body and breather valve 46 are all made of high thermal conductivity materials. The temperature can be quickly transferred, so that an efficient heat exchange structure is formed in an integral structure. Specifically, the gas pipeline 47, the valve seat 44, the balance valve body and the breather valve 46 are all made of aircraft aluminum.

As shown in fig. 1, 8 to 9, a filling pipe 51 is further disposed in the valve seat 44, a first end of the filling pipe 51 is communicated with the filling pipeline 40 of the liquid oxygen storage tank 56, and a second end extends out of the valve seat 44 and is connected with a filling valve 50;

the filling valve 50 comprises a male filling head 25 which is plug-fittingly engageable and a female filling head 24 which is connected to a filling tube 51; wherein the content of the first and second substances,

the filling male head 25 comprises a male valve body 19 and a male valve rod 21 which is arranged in the male valve body 19 and can move along the axial direction of the male valve body 19;

the filling female head 24 comprises a female valve body 8 and a female valve rod 14 which is arranged in the female valve body 8 and can move along the axial direction of the female valve body 8; when the male valve body 19 and the female valve body 8 are inserted, the male valve rod 21 and the female valve rod 14 are pushed against each other, so that the male valve body 19 is communicated with the female valve body 8;

the female valve body 8 is provided with a guide groove 12 along the axial direction and a clamping groove 11 communicated with the guide groove 12 along the circumferential direction; the male valve body 19 is provided with a positioning column 17 along the radial direction, and the positioning column 17 can be inserted into the guide groove 12 and clamped in the clamping groove 11.

In this embodiment, the liquid oxygen filling valve is composed of a filling male head 25 and a filling female head 24, the filling female head 24 can be mounted on the liquid oxygen storage device, and in a normal state, the female head valve rod 14 in the filling female head 24 is in an initial position, and the filling female head 24 is in a sealing state at this time, so that the liquid oxygen in the liquid oxygen filling valve is prevented from leaking. The filling male head 25 is mounted on the liquid oxygen filling device, and the male head valve rod 21 in the filling male head 25 is also in the initial position, and the filling male head 25 is also in the sealing state.

When filling is required, the filling male head 25 can be inserted into the filling female head 24, and since the filling male head 25 is provided with the guide groove 12 along the axial direction thereof, the positioning column 17 on the filling male head 25 is also inserted into the guide groove 12 on the filling female head 24 during the insertion of the filling male head 25, and the positioning column 17 is also moved to the innermost end of the guide groove 12 along with the continuous insertion of the filling male head 25. Because the filling male head 25 is further provided with the clamping groove 11 communicated with the guide groove 12, and the clamping groove 11 is formed along the circumferential direction of the filling male head 25, the positioning column 17 can be rotationally clamped into the clamping groove 11 by rotating the filling male head 25, the positioning column 17 can be limited to move in the axial direction of the filling male head 25 through the clamping groove 11, and the filling male head 25 is fixed on the filling female head 24.

In the process, the male valve rod 21 in the filling male head 25 and the female valve rod 14 in the filling female head 24 push against each other, so that the male valve body 19 and the female valve body 8 are communicated, and the liquid oxygen in the liquid oxygen filling device can smoothly enter the liquid oxygen storage device. Because the filling male head 25 is fixed on the filling female head 24 through the matching of the positioning column 17 and the clamping groove 11, external force is not applied in the liquid oxygen filling process, so that the whole filling process is further simplified, and labor is saved.

This embodiment has reached when filling the dress, can make in the guide way 12 on the public first valve body 19 of reference column 17 synchronous insertion female valve body 8, and rotate public first valve body 19 and make reference column 17 card in draw-in groove 11 on female valve body 8, make public first valve body 19 and the quick butt joint of female valve body 8 and fixed purpose, thereby realized when realizing that public first valve body 19 and the quick butt joint of female valve body 8 fill the dress, can be quick fix public first valve body 19 on female valve body 8, save the manpower, can realize the technological effect of batch operation, and then solved and filled the dress valve and need exert great pressure just can normally fill the dress to filling public first 25 in the correlation technique, high to the manpower requirement when leading to the use, be unfavorable for the problem of large batch operation.

As shown in fig. 8 to 9, the female valve body 8 includes a valve rod movable portion and a male plug portion 13 that are communicated with each other, the female valve rod 14 is provided in the valve rod movable portion, and the guide groove 12 and the card groove 11 are provided in the male plug portion 13. The valve rod movable part and the male connector insertion part 13 are internally provided with valve cavities which are communicated with each other, and the female valve rod 14 is arranged in the valve cavity of the valve rod movable part.

In order to balance the stress of the filling male head 25, the guide grooves 12 and the clamping grooves 11 are arranged into two symmetrical groups.

In order to realize the quick butt joint filling of the filling male head 25 and the filling female head 24, a second spring 20 for resetting is sleeved on the male head valve rod 21; the female valve rod 14 is sleeved with a first spring 9 for resetting. In the initial state, the male valve stem 21 abuts against the outlet of the male valve body 19 under the action of the second spring 20, and the female valve stem 14 abuts against the inlet of the female valve body 8 under the action of the first spring 9. The first spring 9 and the second spring 20 are made of austenitic stainless steel, so that the first spring and the second spring can achieve very long service life while not reacting with liquid oxygen, and are safe and reliable to use.

In order to further improve the sealing performance of the filling male head 25 and the filling female head 24, a first sealing gasket 16 and a second sealing gasket 10 for sealing the inlet of the female valve body 8 are sequentially sleeved on the female valve rod 14, and a third sealing gasket 23 and a fourth sealing gasket 18 for sealing the outlet of the male valve body 19 are sequentially sleeved on the male valve rod 21. Specifically, the first seal 16 is made of polytetrafluoroethylene and the second seal 10 may be made of polytrifluoroethylene. The female valve rod 14 and the male valve rod 21 are also sleeved with opening rings.

In order to further improve the sealing performance of the filling female head 24, a first red copper sealing gasket 15 is further sleeved on the female head valve rod 14, the first red copper sealing gasket 15 is arranged on the inner side of the first sealing gasket 16, and the first red copper sealing gasket 15 is used as a hard seal to prolong the service life; the male valve rod 21 can be sealed by the same hard seal to improve the sealing performance, that is, the male valve rod 21 is further sleeved with a second red copper sealing gasket 22, and the second red copper sealing gasket 22 is arranged on the inner side of the third sealing gasket 23.

A first fixing ring 7 is further arranged in the female valve body 8, and the female valve rod 14 penetrates through the first fixing ring 7 in a sliding mode; the first end of the first spring 9 is abutted against the first fixing ring 7, and the second end is abutted against the first red copper sealing gasket 15.

A second fixing ring is also arranged in the male valve body 19, and the male valve rod 21 slides through the second fixing ring; the first end of the second spring 20 abuts against the second fixing ring, and the second end abuts against the second red copper seal gasket 22. The first fixing ring 7 and the second fixing ring are both provided with through holes for liquid oxygen to flow.

In order to facilitate the installation of the third sealing gasket 23, the fourth sealing gasket 18 and the second red copper sealing gasket 22 on the male valve rod 21, a convex ring is further arranged on the male valve rod 21, and similarly, the convex ring can be arranged on the female valve rod 14 to install the first sealing gasket 16, the second sealing gasket 10 and the first red copper sealing gasket 15.

The sealability of the filling female head 24 and the filling male head 25 can be enhanced by performing multi-stage sealing of the filling male head 25 and the filling female head 24, respectively. In the embodiment, the liquid oxygen filling valve can adopt a large number of marking pieces to achieve the effects of energy conservation and emission reduction, and the sealing pressure hydraulic seal is 0.8-1.0mpa, and the gas seal is 0.3-0.5 mpa. The first multilayer gasket and the second multilayer gasket are configured as leak-proof PTFR gaskets. Through the cooperation of multiple sealing materials, even if the primary seal fails, leakage cannot be caused.

The one end that public first valve body 19 was kept away from to female valve body 8 is provided with sealing washer 6, and sealing washer 6 sets up to tetrafluoro sealing

washer

6, and 8 tip threaded connection of female valve body have bellows 5, and bellows 5 compresses tightly sealing washer 6 at the 8 tip of female valve body.

As shown in fig. 6 to 7, the liquid oxygen tank 56 includes: an outer can 38, an inner can 39, and a vacuum layer 41 disposed between the outer can 38 and the inner can 39; wherein the content of the first and second substances,

a filling pipeline 40 is arranged on the outer side of the inner tank body 39, and the filling pipeline 40 is spirally sleeved on the outer side of the inner tank body 39;

the liquid outlet end 402 of the filling line 40 extends into the inner tank 39 and the liquid inlet end 401 of the filling line 40 extends out of the outer tank 38.

In this embodiment, the portable liquid oxygen tank is composed of an outer tank 38 and an inner tank 39, a vacuum layer 41 is formed between the outer tank 38 and the inner tank 39, and the vacuum layer 41 can reduce heat conduction and preserve heat. The inner tank 39 is used for storing liquid oxygen, the filling pipeline 40 is arranged on the outer side of the inner tank 39, the liquid outlet end 402 of the filling pipeline 40 is communicated with the inner tank 39, and the liquid inlet end 401 extends out of the outer tank 38 and is used for being connected with liquid oxygen filling equipment, so that the liquid oxygen is filled into the inner tank 39 from the liquid oxygen filling equipment.

Since the filling line 40 is arranged in a spiral shape and is fitted over the inner vessel 39, the spiral filling line 40 has a larger filling volume than the straight filling line 40 of the related art, i.e., the filling line 40 can contain more liquid oxygen. Thus, for an inner tank 39 having the same volume, the helical filling line 40 of this embodiment can be used to store liquid oxygen in the inner tank 39 and also store a portion of the liquid oxygen in the filling line 40. Thereby realized increasing the stock solution volume of this liquid oxygen jar body, provided more technical effect of support duration, and then solved the liquid oxygen jar body among the correlation technique and only utilized the space of jar internal portion itself to store, lead to the stock volume to receive the restriction of jar body volume, the stock volume is less, the problem that live time is shorter.

The filling pipeline 40 can be formed by rolling a large-diameter coated aluminum alloy pipeline, and the flow channel has high flow velocity and is convenient for quick filling. The inner tank 39 may also be made of aluminum, specifically liquid oxygen storage aluminum ZL15, which is commonly used for the outer shell of high-speed ultra-low temperature equipment such as airplanes.

As shown in FIGS. 6 to 7, the liquid outlet end 402 of the filling pipeline 40 extends into the inner tank 39 from the lower end of the inner tank 39, so that liquid oxygen can be filled into the inner tank 39 from the lower end of the inner tank 39, and air in the inner tank 39 can be conveniently discharged from the upper end during filling, the liquid inlet end 401 of the filling pipeline 40 extends out of the outer tank 38 from the upper end of the inner tank 39, so that the filling pipeline 40 can completely cover the outer side of the inner tank 39, and the filling pipeline 40 can be tightly and spirally wound on the inner tank 39, so that the volume of the filling pipeline 40 can be further increased in a limited space, and the liquid storage capacity of the liquid oxygen tank can be improved.

To avoid the problem of leakage of liquid oxygen during the pouring of the liquid oxygen tank, the liquid outlet end 402 of the filling line 40 in this embodiment extends vertically into the gas phase area of the inner tank 39, so that the liquid outlet end 402 of the filling line 40 is located higher in the inner tank 39, and the liquid oxygen in the inner tank 39 will not be discharged from the filling line 40 when the liquid oxygen tank is poured.

As shown in fig. 6 to 7, the upper end of the inner tank 39 is further provided with an air outlet pipeline 42, the air outlet pipeline 42 is spirally arranged, an air inlet end 422 of the air outlet pipeline 42 is communicated with the upper end of the inner tank 39, and an air outlet end 421 of the air outlet pipeline 42 extends out of the outer tank 38.

Specifically, the gas outlet pipe 42 at the upper end of the inner tank 39 is used for discharging oxygen generated by volatilization of liquid oxygen when the liquid oxygen tank is used. Because the air outlet pipeline 42 is arranged spirally, the stroke of the volatilized oxygen in the air outlet pipeline 42 can be increased, so that the effect of reducing evaporation is achieved, and the running time of the equipment is longer. Furthermore, by arranging the gas inlet end 422 of the gas outlet pipeline 42 at the upper end of the inner tank 39, when the liquid oxygen tank is toppled, the liquid oxygen cannot be discharged from the gas outlet pipeline 42, and the toppling prevention effect is further achieved.

The vacuum-pumping port of the vacuum layer 41 is arranged at the lower end of the liquid oxygen tank body, namely the lower end of the outer tank body 38, and the structural strength of the inner tank body 39 and the outer tank body 38 can meet the requirement of achieving higher vacuum degree. In order to further improve the vacuum degree of the vacuum layer 41, a radiation-proof coating, a molecular adsorption film and a heat insulation film are sequentially arranged on the outer side of the inner tank body 39, the radiation-proof coating can eliminate partial molecule hiding space and reduce radiation transmission, the molecular adsorption film can adsorb partial free molecules in the vacuum layer 41, the heat insulation film can reduce the heat conduction of the inner tank body 39, and the heat conductivity of the vacuum layer 41 can be further reduced through the structure.

As shown in fig. 6 to 7, the inner side of the inner tank 39 is provided with a ceramic anti-oxidation coating, so that the aluminum profile can be isolated from being oxidized by liquid oxygen, and the equipment can have an ultra-high service life.

As shown in fig. 6 to 7, the lower ends of the inner tank 39 and the outer tank 38 are provided with a plurality of reinforced protruding points, so that reasonable structural strength is achieved, in the design, under the condition of adopting an aluminum profile, through various stress analysis, the lower protruding points adopt a concentrated force dispersion principle, the equipment can be vacuumized, the pressure of the tank body can be dispersed, and the overall mechanical stability of the equipment is achieved.

As shown in fig. 6 to 7, the upper end of the inner tank 39 is connected to the upper end of the outer tank 38 through the connecting member 43, so that the inner tank 39 is suspended, and compared with the case that both ends of the inner tank 39 are connected to the outer tank 38 in the related art, the present embodiment only connects the upper end of the inner tank 39 to the outer tank 38, thereby reducing the connection point between the inner tank 39 and the outer tank 38 and effectively reducing the temperature transfer. Both ends of the connecting member 43 may be fixedly coupled by bolts. To further reduce the thermal conductivity, the connecting member 43 is made of a material with low thermal conductivity, and specifically, the connecting member 43 is made of glass fiber reinforced plastic.

As shown in fig. 7, 11 to 17, a capacitance liquid level meter 55 is further included, and a measuring end of the capacitance liquid level meter 55 extends into the inner tank 39;

the capacitance level meter 55 includes: the measuring terminal comprises an insulating separator 4 and a polar plate main body 1, wherein the insulating separator 4 and the polar plate main body 1 form a measuring terminal; wherein the content of the first and second substances,

the polar plate main body 1 is provided with two and is arranged on two sides of the insulating separator 4 relatively, a plurality of temperature cut-off gaps 102 are arranged on the polar plate main body 1 at intervals, and the temperature cut-off gaps 102 divide the polar plate main body 1 into a temperature cut-off part 101 and a plate body part 103 which are arranged at intervals.

In this embodiment, the plate-type high-precision capacitance liquid level meter mainly comprises an insulating separator 4 and a plate body 1. The plate body 1 is provided in two and mounted on opposite sides of the insulating separator 4, for example, on the upper and lower sides or the left and right sides of the insulating separator 4. The insulating isolation piece 4 plays a role in mounting and supporting the two pole plate main bodies 1, and a capacitor can be formed between the two pole plate main bodies 1, so that the purpose of liquid level measurement is achieved. More specifically, insulating spacers 4 are mounted at both ends of each plate body portion 103. In order to solve the problem of large heat conductivity of a capacitor plate in the conventional liquid level meter, a plurality of temperature cut-off notches 102 are formed in a plate main body 1 at intervals, and the plate main body 1 is divided into a temperature cut-off part 101 and a plate body part 103 which are arranged at intervals by the temperature cut-off notches 102. The temperature-cutoff notch 102 is deeper, so that the section of the formed temperature-cutoff part 101 is smaller, the heat conduction quantity of the plate body 1 in the temperature-cutoff part 101 is reduced, and the heat conduction quantity of the whole plate body 1 is further reduced. Due to the formation of the plurality of plate body portions 103, the plate body 1 forms a multi-stage capacitor plate, and the capacitance can be increased. Because the plate body part 103 and the temperature cut-off part 101 are formed by forming the temperature cut-off notch 102 on the plate body 1, the plate body part 103 and the temperature cut-off part 101 are still of an integral structure, so that the production and the manufacture are convenient, and the use stability of the plate body 1 can be improved.

This embodiment has reached and has been kept apart two polar plate main parts 1 by insulating barrier member 4, and form the less disconnected warm portion 101 of sectional area on polar plate main part 1, reduce the purpose of disconnected warm portion 101 heat conduction, thereby realized reducing the heat conduction of polar plate main part 1 in the level gauge, reduce the transmission speed of heat source, reduce jar interior liquid evaporation capacity, and then solved the level gauge among the correlation technique and leaded to forming reliable heat bridge for integral conductor mode because of its structure when ultra-low temperature liquid measurement, the heat conduction increases, thereby improve the problem of liquid evaporation rate greatly.

In addition, in the present embodiment, the plate body 1 has multiple stages of capacitors by forming the plate body portions 103 on the plate body 1, and the measurement capacitance is 20-30% higher than that of a conventional insertion-type liquid level meter, so that the accuracy and the sensitivity are relatively high.

As shown in fig. 11 to 17, the insulating spacer 4 is provided in plurality and corresponds to the plate body portion 103; the insulating spacers 4 are formed in a square shape, and each plate body portion 103 is fixed to the corresponding insulating spacer 4.

Specifically, it should be noted that, since each of the plate main bodies 1 is composed of a plurality of plate portions 103 and the temperature cutoff portion 101, the width of the temperature cutoff portion 101 is much smaller than that of the plate portion 103, and the length of the temperature cutoff portion 101 is also much smaller than that of the plate portion 103, the mounting positions for the plate main bodies 1 are mainly concentrated on the plate portion 103. The number of the insulating spacers 4 in this embodiment may correspond to the number of the plate portions 103, and the plate portions 103 may be fixed to the insulating spacers 4 by screws. The insulating spacers 4 are not directly connected between the adiabatic regions 101 of the two plate bodies 1.

Since the plate portion 103 has a flat structure, in order to facilitate the connection between the plate portion 103 and the insulating spacer 4, the insulating spacer 4 in this embodiment is square, preferably rectangular in cross section, so as to provide a relatively flat mounting surface.

As shown in fig. 11 to 17, the heat exchanger further comprises a main support pipe 2 made of a material with low thermal conductivity, and the main support pipe 2 penetrates through each insulating spacer 4 in sequence.

Specifically, since the insulating spacer 4 is provided only on the plate body 103 of the plate body 1 and has no supporting and connecting function with respect to the adiabatic section 101, the adiabatic section 101 itself is easily deformed due to its small width when applied to a low-temperature environment. For further improving the overall structure intensity of this level gauge, avoid producing under low temperature environment and warp, add a main tributary stay tube 2 in this embodiment, main tributary stay tube 2 is as core skeleton texture, and it has better structural strength and structural stability, can still keep excellent physical properties under low temperature environment. In this embodiment, the insulating spacers 4 are disposed in a hollow manner, the main support pipe 2 can sequentially pass through the insulating spacers 4, and the insulating spacers 4 and the main support pipe 2 can be fixed by bolts.

And the main supporting pipe 2 is made of a material with low heat conductivity, so that the heat conduction of the liquid level meter is further reduced. Preferably, the insulating spacer 4 is made of teflon, and the main supporting tube 2 is made of glass fiber reinforced plastic. The glass fiber reinforced plastic and the polytetrafluoroethylene are high-breaking-temperature insulators, and the main support pipe 2 made of the glass fiber reinforced plastic also has high structural strength and can prevent the deformation of the pole plate main body 1 in a low-temperature environment.

Furthermore, the plate body part 103 is connected with a lead, one end of the main support pipe 2 extends out of the plate body part 103 and is provided with an insulating layer, the lead penetrates through the insulating layer and is electrically connected with the measurement control assembly, and a shielding silver wire is fixed at the joint of the lead and the plate body part 103, so that the influence of external interference signals on the measurement precision is reduced.

As shown in fig. 11 to 17, the adjacent plate portions 103 are connected by the adiabatic portion 101, and the adiabatic portion 101 is provided with a plurality of grooves 3 along the longitudinal direction thereof.

Specifically, as shown in fig. 1, in the present embodiment, one plate body 1 is provided with three spaced temperature interruption notches 102 to form four plate body portions 103 and temperature interruption portions 101, and both ends of the temperature interruption portions 101 are connected to the adjacent plate body portions 103 to form an integral structure. In order to increase the stroke of the heat source in the temperature cutoff portion 101 and improve the transmission deceleration and stability of the heat source in the temperature cutoff portion 101, in the embodiment, the temperature cutoff portion 101 is provided with a plurality of grooves 3, the grooves 3 are uniformly distributed along the length direction of the temperature cutoff portion 101, and the surface area of the temperature cutoff portion 101 is increased by the arrangement of the grooves 3, so that the stroke and stability of the heat source can be increased.

As shown in fig. 11 to 17, the grooves 3 are provided on both sides of the adiabatic part 101, and the grooves 3 are arc-shaped grooves.

Specifically, it should be noted that the groove 3 is a semicircular arc-shaped groove, as shown in the figure, the arc-shaped groove is opened on the upper and lower sides of the temperature cutoff portion 101, the distance between centers of adjacent arc-shaped grooves along the length direction of the temperature cutoff portion 101 is 10mm, the length of the temperature cutoff portion 101 is 50mm, and the diameter of the arc-shaped groove is 0.2mm to 0.8mm, preferably 0.5 mm. Each temperature-cutoff part 101 can be provided with 5 groups of arc-shaped grooves, and each group of arc-shaped grooves is two arc-shaped grooves which are oppositely arranged from top to bottom.

In order to further increase the surface area of the adiabatic section 101, the adiabatic section 101 is disposed in a wave shape or a zigzag shape.

Further, the length of the temperature cutoff portion 101 is half of the length of the plate body portion 103, so that the heat conduction amount can be reduced to the maximum extent while the structural strength required for the use of the plate body 1 is satisfied.

Further, the thickness of the adiabatic section 101 is 0.1mm to 0.3mm, preferably 0.2mm, as that of the plate body section 103. The thickness of the whole polar plate main body 1 is thinned through the arrangement, the whole sectional area of the polar plate main body 1 can be reduced, and the heat conduction quantity is reduced.

Further, the width of the temperature cutoff portion 101 is one fifth to one tenth, preferably one ninth, of the width of the plate body portion 103, so that the width of the temperature cutoff portion 101 is sufficiently small with respect to the width of the plate body portion 103, so that the heat conduction amount of the heat source at the temperature cutoff portion 101 is significantly reduced with respect to the heat conduction amount at the plate body portion 103, thereby greatly reducing the heat conduction amount of the plate body 1.

When the temperature-cutoff capacitor plate is applied to liquid oxygen temperature monitoring, in order to avoid the reaction between the plate main body 1 and liquid oxygen, the plate main body 1 is made of medical 304 stainless steel, so that the plate main body can be prevented from reacting with the liquid oxygen, and the loss of the liquid oxygen is reduced.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A portable liquid oxygen apparatus, comprising: the shell, the liquid oxygen storage tank and the integrated functional valve; wherein the content of the first and second substances,

2. The portable liquid oxygen supply device according to claim 1, wherein the breather valve comprises a pulse breathing channel and a direct current breathing channel which are communicated with the air outlet end of the balance valve, and a pulse regulating piece and a direct current regulating piece are respectively arranged on the pulse breathing channel and the direct current breathing channel;

3. The portable liquid oxygen supply device according to claim 2, wherein the balance valve comprises a balance valve body fixedly arranged on the valve seat, a first channel is arranged in the balance valve body, a first end of the first channel is communicated with a second end of the gas using pipeline, and a second end of the first channel is communicated with a gas inlet end of the breather valve;

4. The portable liquid oxygen supply apparatus of claim 1, wherein the blow valve comprises: the air release valve body, the air rod, the pressure release handle and the sealing assembly are arranged; wherein the content of the first and second substances,

and the gas rod is sleeved with a return spring.

5. A portable liquid oxygen supply apparatus according to any one of claims 1 to 4, wherein a filling tube is further arranged in the valve seat, a first end of the filling tube is communicated with a filling pipeline of the liquid oxygen storage tank, and a second end of the filling tube extends out of the valve seat and is connected with a filling valve;

6. The portable liquid oxygen supply apparatus of claim 5, wherein the liquid oxygen storage tank comprises: the vacuum tank comprises an outer tank body, an inner tank body and a vacuum layer arranged between the outer tank body and the inner tank body; wherein the content of the first and second substances,

7. The portable liquid oxygen supply device of claim 6, wherein the liquid outlet end of the filling pipeline extends into the inner tank body from the lower end of the inner tank body, and the liquid inlet end of the filling pipeline extends out of the outer tank body from the upper end of the inner tank body;

8. The portable liquid oxygen supply device as claimed in claim 7, wherein the upper end of the inner tank is connected with the upper end of the outer tank through a connecting piece so as to suspend the inner tank; the connecting piece is made of a material with low thermal conductivity.

9. The portable liquid oxygen supply apparatus of claim 8, further comprising a capacitance level gauge, a measuring end of the capacitance level gauge extending into the inner tank;

10. The portable liquid oxygen supply device according to claim 9, wherein the plurality of insulating spacers are provided to correspond to the plate body portions; the insulating isolation pieces are arranged in a square shape, and each plate body part is fixed on the corresponding insulating isolation piece;