Pressure self-balancing adiabatic protection device for liquid oxygen storage tank

Abstract

The utility model discloses a kind of liquid oxygen storage tank pressure self-balancing heat insulation protection devices, heat insulation tank, the control panel one side outer wall is fixedly installed with control panel by bolt, the inner wall of heat insulation tank front and back side is integrally provided with baffle, the inside of heat insulation tank is constituted two areas of pressure relief bin and booster bin by two baffle, the inside of heat insulation tank is filled with clean water;Liquid oxygen tank, the liquid oxygen tank is set in the inside of heat insulation tank, and liquid oxygen tank outer wall two sides respectively with two baffle outer wall contact, the upper end of liquid oxygen tank is fixedly installed with tank cover by bolt, when liquid oxygen tank internal pressure is too large, solenoid valve at heat exchange tube opens, liquid oxygen in liquid oxygen tank enters heat exchange tube inside at this time, liquid oxygen in heat exchange tube absorbs heat in water and rapidly vaporizes after, oxygen after vaporization reenters the inside of liquid oxygen tank by heat exchange tube, to carry out booster pressure in the inside of liquid oxygen tank, avoid liquid oxygen tank due to negative pressure deformation.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure self-balancing devices for liquid oxygen storage tanks, and in particular to a pressure self-balancing thermal insulation protection device for liquid oxygen storage tanks. Background Technology

[0002] Liquid oxygen, as a cryogenic industrial gas, is widely used in steel smelting, medical oxygen supply, and other fields. Its storage relies on specialized liquid oxygen storage tanks, which must simultaneously meet two major requirements: pressure self-balancing and thermal insulation. Regarding pressure self-balancing, liquid oxygen is prone to vaporization due to environmental heat leakage, leading to pressure increases. Depressurization is necessary to prevent overpressure, while continuous drainage or sudden drops in ambient temperature necessitate pressurization to prevent negative pressure deformation of the storage tank. For thermal insulation, methods such as vacuum perlite and polyurethane foaming are required to reduce external heat transfer into the tank and minimize liquid oxygen evaporation losses. As storage tank capacity continues to increase, the requirements for the synergy of these two aspects and energy efficiency become increasingly urgent.

[0003] Traditional liquid oxygen storage tanks operate as independent systems for pressure self-balancing and thermal insulation, resulting in high energy consumption. The pressure system relies on electrically heated vaporizers and booster pumps for pressurization, while the cryogenic cooling generated during depressurization is directly wasted. The insulation system requires vacuum pumps to maintain vacuum levels or electric heating tape to prevent localized icing on the tank's exterior, necessitating continuous operation of this equipment and further increasing energy consumption. The lack of energy exchange between the two systems creates a contradiction: "consuming energy to block heat on one side while wasting cooling energy on the other," leading to persistently high overall energy consumption for the storage tanks. Driven by dual-carbon goals, developing an integrated pressure self-balancing and thermal insulation device that recovers cooling energy to reduce energy consumption has become a pressing issue in this field.

[0004] Therefore, this application provides a pressure self-balancing thermal insulation protection device for liquid oxygen storage tanks. Utility Model Content

[0005] This invention provides a pressure self-balancing thermal insulation protection device for liquid oxygen storage tanks, which can solve the problem of high power consumption caused by the independent system of pressure self-balancing and thermal insulation protection in traditional liquid oxygen storage tanks.

[0006] This utility model provides a pressure self-balancing thermal insulation protection device for liquid oxygen storage tanks, comprising: An insulation tank is provided with a control panel fixed to one side of its outer wall by bolts. The inner walls of the front and rear sides of the insulation tank are integrally provided with partitions. The interior of the insulation tank is divided into two areas, a pressure relief chamber and a pressure boosting chamber, by two partitions. The insulation tank is filled with clean water. The liquid oxygen tank is located inside the insulated tank, and its outer walls are in contact with the outer walls of two partitions on both sides. The upper end of the liquid oxygen tank is fixed with a tank cover by bolts. The pressure balancing mechanism includes a pressure relief pipe fixedly installed on the upper wall of one side of the tank cover and a heat exchange pipe fixedly installed inside the pressurization chamber. The pressure relief pipe extends through the upper wall of one side of the insulated tank on the side away from the tank cover and extends to the top of the pressure relief chamber. The inlet and outlet of the heat exchange pipe are fixedly connected to the upper and lower ends of the outer wall of one side of the liquid oxygen tank, respectively. Solenoid valves are fixedly installed on the outer walls of both the pressure relief pipe and the heat exchange pipe. A pressure relief mechanism is provided on the upper wall of one side of the insulated tank.

[0007] In a liquid oxygen storage tank pressure self-balancing heat insulation protection device according to one embodiment of the present invention, multiple through-hole circulation holes are provided on the outer walls of both partitions.

[0008] In a liquid oxygen storage tank pressure self-balancing thermal insulation protection device according to one embodiment of the present invention, an electric heating tube is fixedly installed at the bottom of the insulated tank.

[0009] In a pressure self-balancing thermal insulation protection device for a liquid oxygen storage tank according to one embodiment of the present invention, the pressure relief mechanism includes a connecting seat disposed on the upper wall of one side of the thermal insulation tank. A sealing plate is slidably connected inside the connecting seat. Connecting rods are welded to the left and right sides of the lower end of the sealing plate. The two connecting rods are slidably connected to the inner walls of the connecting seat on both sides away from the lower end of the sealing plate. A spring is fixedly installed between the connecting rod and the connecting seat.

[0010] In a liquid oxygen storage tank pressure self-balancing thermal insulation protection device according to one embodiment of the present invention, multiple pressure sensors are fixedly installed on the lower wall of the tank cover.

[0011] In a liquid oxygen storage tank pressure self-balancing thermal insulation protection device according to one embodiment of the present invention, the control panel is provided with control buttons and display screen on the outside, and the control panel is provided with control circuit board and battery inside. The control panel is electrically connected to the electric heating tube and the solenoid valve.

[0012] In a liquid oxygen storage tank pressure self-balancing heat insulation protection device according to one embodiment of the present invention, the pressure relief pipe is fixedly installed with a heat tracing cable on the outer wall of the upper side of the pressure relief chamber.

[0013] The technical solution provided in this application embodiment may include the following beneficial effects: This application designs a pressure self-balancing thermal insulation protection device for liquid oxygen storage tanks. When the pressure inside the liquid oxygen tank is too high, the solenoid valve at the pressure relief pipe opens. At this time, the low-temperature gaseous oxygen inside the liquid oxygen tank enters the pressure relief chamber through the pressure relief pipe. On the one hand, this relieves the pressure in the liquid oxygen tank, and on the other hand, the released low-temperature gaseous oxygen can exchange heat with the water in the insulation tank. The water absorbs heat to reduce the temperature of the outer wall of the storage tank and enhance the insulation effect. When the pressure inside the liquid oxygen tank is too low, the solenoid valve at the heat exchange tube opens. At this time, the liquid oxygen inside the liquid oxygen tank enters the heat exchange tube. After absorbing heat from the water, the liquid oxygen in the heat exchange tube quickly vaporizes. The vaporized oxygen then re-enters the liquid oxygen tank through the heat exchange tube, thereby pressurizing the liquid oxygen tank and preventing the liquid oxygen tank from deforming due to negative pressure.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a structural schematic diagram of an embodiment of this application; Figure 2 is a cross-sectional view of an embodiment of this application; Figure 3 is a cross-sectional view of the insulated tank in an embodiment of this application; Figure 4 This is an embodiment of the present application. Figure 2 A magnified view of A in the middle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] Example like Figures 1 to 4 As shown, this application provides a pressure self-balancing thermal insulation protection device for liquid oxygen storage tanks, comprising: The insulation tank 10 has a control panel 11 fixed to one side of its outer wall by bolts. The inner walls of the front and rear sides of the insulation tank 10 are integrally provided with partitions 12. The interior of the insulation tank 10 is divided into two areas, a pressure relief chamber 14 and a pressure boosting chamber 15, by the two partitions 12. The insulation tank 10 is filled with clean water. Due to the high specific heat capacity of water, it can stably absorb the cold energy of gaseous oxygen. The insulation effect is achieved by storing the cold energy generated by oxygen release during pressure relief, without the need for additional insulation equipment.

[0021] In an optional embodiment, the outer walls of both partitions 12 are provided with a plurality of through-hole circulation holes 13. When the water in the pressure relief chamber 14 or the pressure boosting chamber 15 undergoes heat exchange, its temperature drops. After absorbing the cold energy of the exhaust gas, the cold water flows through the circulation holes 13 to the high-temperature water area, so that the water flows in the insulation tank 10 to improve the insulation effect.

[0022] In one optional embodiment, an electric heating tube 16 is fixedly installed at the bottom of the insulation tank 10. When the water temperature in the insulation tank 10 is too low, the electric heating tube 16 is energized to heat the water and prevent the water from freezing.

[0023] In one optional embodiment, the control panel 11 is provided with control buttons and a display screen on the outside, and the control panel 11 is provided with a control circuit board and a battery inside. The control panel 11 is electrically connected to the electric heating tube 16 and the solenoid valve 32. The control panel 11 controls the start and stop of the electric heating tube 16 and the solenoid valve 32 to realize automatic pressure relief and automatic pressure increase.

[0024] Liquid oxygen tank 20 is located inside the insulated tank 10, and the outer walls of the liquid oxygen tank 20 are in contact with the outer walls of two partitions 12 on both sides. The upper end of the liquid oxygen tank 20 is fixed with a tank cover 21 by bolts. Liquid oxygen is stored by the liquid oxygen tank 20 and the tank cover 21. In one alternative embodiment, a plurality of pressure sensors 22 are fixedly installed on the lower wall of the tank cover 21 to monitor the pressure inside the liquid oxygen tank 20.

[0025] The pressure balancing mechanism 30 includes a pressure relief pipe 31 fixedly installed on the upper wall of one side of the tank cover 21 and a heat exchange pipe 33 fixedly installed inside the pressurization chamber 15. The pressure relief pipe 31 extends through the upper wall of one side of the insulated tank 10 on the side away from the tank cover 21 and extends directly above the pressure relief chamber 14. The inlet and outlet of the heat exchange pipe 33 are fixedly connected to the upper and lower ends of the outer wall of one side of the liquid oxygen tank 20, respectively. Solenoid valves 32 are fixedly installed on the outer walls of both the pressure relief pipe 31 and the heat exchange pipe 33.

[0026] After adopting the above technical solution, when the pressure inside the liquid oxygen tank 20 is too high, the solenoid valve 32 at the pressure relief pipe 31 opens. At this time, the low-temperature gaseous oxygen inside the liquid oxygen tank 20 enters the pressure relief chamber 14 through the pressure relief pipe 31, which on the one hand relieves the pressure of the liquid oxygen tank 20, and on the other hand, the discharged low-temperature gaseous oxygen can exchange heat with the water in the insulation tank 10. The water absorbs heat to reduce the temperature of the outer wall of the storage tank and enhance the insulation effect. When the pressure inside the liquid oxygen tank 20 is too low, the solenoid valve 32 at the heat exchange pipe 33 opens. At this time, the liquid oxygen inside the liquid oxygen tank 20 enters the heat exchange pipe 33. After absorbing heat from the water, the liquid oxygen in the heat exchange pipe 33 quickly vaporizes. The vaporized oxygen re-enters the liquid oxygen tank 20 through the heat exchange pipe 33, thereby pressurizing the liquid oxygen tank 20 and preventing the liquid oxygen tank 20 from deforming due to negative pressure.

[0027] In an optional embodiment, a heat tracing cable is fixedly installed on the outer wall of the upper side of the pressure relief pipe 31 located at the pressure relief chamber 14. The heat tracing cable is used to heat the end of the pressure relief pipe 31 to prevent water vapor adhering to the pressure relief pipe 31 from freezing and affecting pressure relief in a low-temperature environment.

[0028] The pressure relief mechanism 40 is located on the upper wall of one side of the insulation tank 10. The pressure relief mechanism 40 includes a connecting seat 41 located on the upper wall of one side of the insulation tank 10. A sealing plate 42 is slidably connected inside the connecting seat 41. Connecting rods 43 are welded to the left and right sides of the lower end of the sealing plate 42. The two connecting rods 43 are slidably connected to the inner walls of the two sides of the connecting seat 41 on the side away from the lower end of the sealing plate 42. A spring 44 is fixedly installed between the connecting rods 43 and the connecting seat 41. When the air pressure inside the insulation tank 10 rises due to excessive oxygen discharge, the air pressure overcomes the elastic force of the spring 44 and pushes the sealing plate 42 upward. At this time, a gap is created between the sealing plate 42 and the connecting seat 41, and the excess oxygen is discharged through the gap. After the air pressure inside the insulation tank 10 decreases, the spring 44 rebounds and resets the sealing plate 42, resealing the insulation tank 10 and realizing automatic pressure relief.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A pressure self-balancing thermal insulation protection device for liquid oxygen storage tanks, characterized in that, include: An insulation tank is provided with a control panel fixed to one side of its outer wall by bolts. The inner walls of the front and rear sides of the insulation tank are integrally provided with partitions. The interior of the insulation tank is divided into two areas, a pressure relief chamber and a pressure boosting chamber, by two partitions. The insulation tank is filled with clean water. The liquid oxygen tank is located inside the insulated tank, and its outer walls are in contact with the outer walls of two partitions on both sides. The upper end of the liquid oxygen tank is fixed with a tank cover by bolts. The pressure balancing mechanism includes a pressure relief pipe fixedly installed on the upper wall of one side of the tank cover and a heat exchange pipe fixedly installed inside the pressurization chamber. The pressure relief pipe extends through the upper wall of one side of the insulated tank on the side away from the tank cover and extends to the top of the pressure relief chamber. The inlet and outlet of the heat exchange pipe are fixedly connected to the upper and lower ends of the outer wall of one side of the liquid oxygen tank, respectively. Solenoid valves are fixedly installed on the outer walls of both the pressure relief pipe and the heat exchange pipe. A pressure relief mechanism is provided on the upper wall of one side of the insulated tank.

2. The pressure self-balancing thermal insulation protection device for a liquid oxygen storage tank according to claim 1, characterized in that, Both partitions have multiple through-hole circulation holes on their outer walls.

3. The pressure self-balancing thermal insulation protection device for a liquid oxygen storage tank according to claim 1, characterized in that, An electric heating element is fixedly installed at the bottom of the insulation tank.

4. The pressure self-balancing thermal insulation protection device for a liquid oxygen storage tank according to claim 1, characterized in that, The pressure relief mechanism includes a connecting seat disposed on the upper wall of one side of the insulated tank. A sealing plate is slidably connected inside the connecting seat. Connecting rods are welded to the left and right sides of the lower end of the sealing plate. The two connecting rods are slidably connected to the inner walls of the connecting seat on the sides away from the lower end of the sealing plate. A spring is fixedly installed between the connecting rod and the connecting seat.

5. The pressure self-balancing thermal insulation protection device for a liquid oxygen storage tank according to claim 1, characterized in that, Multiple pressure sensors are fixedly installed on the lower wall of the can lid.

6. The pressure self-balancing thermal insulation protection device for a liquid oxygen storage tank according to claim 3, characterized in that, The control panel is equipped with control buttons and a display screen on its outer side, and a control circuit board and a battery are installed inside the control panel. The control panel is electrically connected to the electric heating element and the solenoid valve.

7. The pressure self-balancing thermal insulation protection device for a liquid oxygen storage tank according to claim 1, characterized in that, The pressure relief pipe is located on the outer wall of one side of the upper end of the pressure relief chamber and is fixedly installed with a heat tracing cable.

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