CN212829831U - Liquid hydrogen storage container capable of eliminating layering phenomenon - Google Patents

Abstract

The utility model provides a liquid hydrogen storage container for eliminating the layering phenomenon, which comprises a shell and an inner container, wherein the inner container is positioned inside the shell, and a composite material support ring is arranged between the shell and the inner container; a double-spiral heat exchange device is arranged in the inner container, the bottom of the double-spiral heat exchange device is close to the bottom of the inner container, and the top of the double-spiral heat exchange device is close to the bottom of a bottle opening of the inner container; the filling pipe is arranged at the container opening, the top end of the filling pipe extends out of the container opening, the bottom end of the filling pipe is connected with the inner container opening, a pipe opening valve is installed at the top end of the filling pipe, a protective cover is hinged to the outside of the container opening through a hinge, and a closing device is arranged at the lower end of the protective cover and the outer end of the container opening. The utility model provides a liquid hydrogen storage container can realize the inside rapid heat transfer between each layer along the vertical temperature difference of liquid hydrogen storage container, makes the liquid hydrogen temperature in the container unanimous.

Description

Liquid hydrogen storage container capable of eliminating layering phenomenon

Technical Field

The utility model relates to a liquid hydrogen storage technology field especially relates to an eliminate layering's liquid hydrogen storage container.

Background

The liquid hydrogen is liquid obtained by cooling hydrogen, and the boiling point of normal hydrogen is 20.37K under one atmospheric pressure. Liquid hydrogen is a colorless and tasteless high-energy low-temperature liquid fuel, and a double-component low-temperature liquid propellant consisting of hydrogen and liquid oxygen has extremely high energy, so that the liquid hydrogen is widely used for launching carrier rockets and space shuttles of communication satellites and space shuttles. The hydrogen energy is green and environment-friendly, and can meet the requirement of human on the technical revolution of new energy in the future. The hydrogen fuel automobile is green and efficient, has unique technical advantages, is expected to become the main force of a new generation of automobile, and has very wide development prospect. In addition, liquid hydrogen is widely applied in the fields of chemical industry, medicine and the like. However, liquid hydrogen has extremely low temperature and extremely low latent heat of vaporization and thermal conductivity, so that the storage and transportation technology is very difficult.

During long-term storage of liquid hydrogen, heat is difficult to conduct in the vertical direction due to low thermal conductivity, and thus temperature stratification may result from heat leak. The problem of stratification of the liquid hydrogen can cause rapid over-pressurization of the container, greatly shorten storage time, and cause the discharge of flammable and explosive hydrogen. This not only causes waste, but also creates a safety hazard.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a liquid hydrogen storage container that eliminates the delamination phenomenon in view of the above-mentioned technical problems.

A liquid hydrogen storage container for eliminating the layering phenomenon is characterized by comprising a shell and an inner container, wherein the inner container is positioned in the shell, and a composite material support ring is arranged between the shell and the inner container; a double-spiral heat exchange device is arranged in the inner container, the bottom of the double-spiral heat exchange device is close to the bottom of the inner container, and the top of the double-spiral heat exchange device is close to the bottom of a bottle opening of the inner container; the filling pipe is arranged at the container opening, the top end of the filling pipe extends out of the container opening, the bottom end of the filling pipe is connected with the inner container opening, a pipe opening valve is installed at the top end of the filling pipe, a protective cover is hinged to the outside of the container opening through a hinge, and a closing device is arranged at the lower end of the protective cover and the outer end of the container opening.

Further, the double-helix heat exchange device comprises a cooler and fluid pipes, and the fluid pipes and the cooler form a complete closed loop.

Further, the fluid pipe comprises a left spiral pipe, a bottom pipe and a right spiral pipe, two ends of the bottom pipe are respectively connected with lower ports of the left spiral pipe and the right spiral pipe, and upper ports of the left spiral pipe and the right spiral pipe are connected with the cooler.

Furthermore, a capillary structure is arranged in the fluid pipe, so that fluid flows anticlockwise in the double-helix heat exchange device.

Furthermore, the inner wall of the inner container is provided with a corrosion-resistant layer.

Furthermore, an anti-collision protection pad is arranged on the outer wall of the shell.

Furthermore, a temperature sensor is arranged on the orifice valve.

Further, the closing device comprises a closing bolt at the lower end of the protecting cover and a locking bolt at the outer end of the container opening.

Above-mentioned eliminate liquid hydrogen storage container of layering phenomenon, through two spiral heat transfer device of installation in the inner bag, can make inside quick heat transfer between each layer along vertical temperature difference of liquid hydrogen storage container, through making the inside quick heat transfer between each layer along vertical direction temperature difference of liquid hydrogen storage container, thereby eliminate the inside difference in temperature along vertical direction of liquid hydrogen, when producing temperature difference and layering between the inside not co-altitude of liquid hydrogen of storing, pass through the heat exchanger with cold volume and upwards transmit from the lower part liquid hydrogen of lower temperature, thereby make liquid hydrogen temperature unanimous reach the effect of eliminating liquid hydrogen layering in the container.

Drawings

FIG. 1 is a schematic structural view of a double-helix heat exchanger installed in the present invention;

fig. 2 is a schematic view of the structure of the middle protective cover of the present invention.

In the drawing, the liner 1, the filling pipe 11, the double-helix heat exchange device 2, the fluid pipe 21, the left spiral pipe 211, the bottom pipe 212, the right spiral pipe 213, the cooler 22, the protective cover 3, the pipe orifice valve 4, the container orifice 5, the closing device 6, the closing bolt 61 and the locking bolt 62 are arranged.

Detailed Description

In order to make the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, a liquid hydrogen storage container for eliminating the delamination phenomenon is provided, which comprises a housing and an inner container 1, wherein the inner container 1 is located inside the housing, and a composite material support ring is arranged between the housing and the inner container 1 for supporting and fixing the position of the inner container 1 inside the housing. A double-spiral heat exchange device 2 is arranged in the inner container 1, the bottom of the double-spiral heat exchange device 2 is close to the bottom of the inner container 1, and the top of the double-spiral heat exchange device 2 is close to the bottom of a bottle opening of the inner container 1. The container opening 5 is provided with a filling pipe 11, the top end of the filling pipe 11 extends out of the container opening 5, the bottom end of the filling pipe 11 is communicated with the bottle opening of the inner container 1, a pipe opening valve 4 is installed at the top end of the filling pipe 11, the pipe opening valve 4 is used for sealing the filling pipe 11, the container opening 5 is externally hinged with a protective cover 3 through a hinge, the lower end of the protective cover 3 and the outer end of the container opening 5 are provided with a closing device 6, and the closing device 6 is used for closing the whole container. The protective cover 3 can provide a dust protection for the filling tube 11 against dust and impurities adhering inadvertently into the container.

The double-helix heat exchange device 2 comprises a cooler 22 and a fluid pipe 21, the fluid pipe 21 and the cooler 22 form a complete closed loop, the fluid pipe 21 comprises a left helix pipe 211, a bottom pipe 212 and a right helix pipe 213, two ends of the bottom pipe 212 are respectively connected with lower ports of the left helix pipe 211 and the right helix pipe 213, and upper ports of the left helix pipe 211 and the right helix pipe 213 are connected with the cooler 22. Meanwhile, because the capillary structure is arranged in the fluid pipe 21, the capillary structure enables the fluid in the pipe to move in a single direction along the counterclockwise direction. The double helix heat exchange device 2 is filled with a fluid which is hydrogen (H) -neon (Ne) mixed gas and keeps reasonable pressure, the gas becomes liquid after passing through the cooler 22, the liquid flows downwards from the upper port of the left helix tube 211, when passing through the upper part of the inner container 1, the fluid absorbs heat from the liquid state to change into the gas state because the temperature of the upper layer in the inner container 1 is higher, the gas fluid continues to flow downwards under the action of the capillary structure, when the lower end of the left helix tube 211, namely the lower part of the inner container 1, the fluid releases heat from the gas state to change into the liquid because the temperature of the lower layer in the inner container 1 is lower, the liquid fluid enters the bottom tube 212 from the lower port of the left helix tube 211 under the action of the capillary structure, and simultaneously flows from the left end to the right end of the bottom tube 212 under the action of the capillary structure to enter the lower port of the right helix tube 213; the fluid flows from the lower port of the right spiral pipe 213 to the upper port of the right spiral pipe 213 by capillary action, and when the fluid flows from the lower portion of the liner 1 to the upper portion of the liner 1, the fluid changes from a liquid state to a gas state due to temperature rise, and absorbs heat, and the fluid enters the cooler 22 from the upper port of the right spiral pipe 213 in the gas state, changes to the liquid state again, and continues to circulate under the action of the capillary structure. Every circulation of the fluid can obviously reduce or even eliminate the temperature difference between the liquid hydrogen with different heights, so that the temperature of all the liquid hydrogen in the container is consistent, and the effect of eliminating liquid hydrogen stratification is achieved.

In one embodiment, the inner wall of the inner container 1 is provided with a corrosion-resistant layer for protecting the inner container 1 from corrosion of the liquid hydrogen stored therein.

In one embodiment, the outer wall of the shell is provided with an anti-collision protection pad, so that anti-collision protection can be provided for the whole container, and the container is prevented from being damaged by collision in the carrying and moving process.

In one embodiment, a temperature sensor is provided on the port valve 4 to monitor the temperature of the filling tube 11, and it can be noted in real time whether the port valve 4 is tightly closed to prevent air from entering.

In one embodiment, the closing device 6 comprises a closing bolt 61 at the lower end of the protecting cover 3 and a latch 62 at the outer end of the container opening 5, wherein the closing bolt 61 and the latch 62 can be closed to close the protecting cover 3 and the container opening 5, so that dust and the like are prevented from entering the container, and the container is ensured to be airtight. The closing device 6 may be in the form of a lock, that is, the locking bolt 61 is a lock catch, the locking bolt 62 is a lock slot, and the closing device 6 may also be in other airtight forms such as a hinge type.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (8)

1. A liquid hydrogen storage container for eliminating the layering phenomenon is characterized by comprising a shell and an inner container, wherein the inner container is positioned in the shell, and a composite material support ring is arranged between the shell and the inner container; a double-spiral heat exchange device is arranged in the inner container, the bottom of the double-spiral heat exchange device is close to the bottom of the inner container, and the top of the double-spiral heat exchange device is close to the bottom of a bottle opening of the inner container; the filling pipe is arranged at the container opening, the top end of the filling pipe extends out of the container opening, the bottom end of the filling pipe is connected with the inner container opening, a pipe opening valve is installed at the top end of the filling pipe, a protective cover is hinged to the outside of the container opening through a hinge, and a closing device is arranged at the lower end of the protective cover and the outer end of the container opening.

2. The liquid hydrogen storage vessel for eliminating stratification according to claim 1 wherein said double spiral heat exchange means comprises a cooler and fluid tubes, said fluid tubes forming a complete closed loop with the cooler.

3. The liquid hydrogen storage container for eliminating the delamination phenomenon as recited in claim 2, wherein the fluid pipe comprises a left spiral pipe, a bottom pipe and a right spiral pipe, wherein the two ends of the bottom pipe are respectively connected with the lower ports of the left spiral pipe and the right spiral pipe, and the upper ports of the left spiral pipe and the right spiral pipe are connected with the cooler.

4. The liquid hydrogen storage container according to claim 3, wherein a capillary structure is arranged in the fluid pipe to enable fluid to flow anticlockwise in the double-helix heat exchange device.

5. The liquid hydrogen storage container according to claim 1, wherein a corrosion-resistant layer is provided on an inner wall of the inner container.

6. The liquid hydrogen storage container for eliminating delamination as set forth in claim 1 wherein an outer wall of said outer shell is provided with a crash pad.

7. The liquid hydrogen storage container of claim 1 wherein a temperature sensor is provided on the port valve.

8. The liquid hydrogen storage container according to claim 1, wherein the closing means comprises a closing bolt at a lower end of the protecting cover, and a locking bolt at an outer end of the container mouth.

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