CN112923624A

CN112923624A - Storage device

Info

Publication number: CN112923624A
Application number: CN202110198196.XA
Authority: CN
Inventors: 刘增乾; 邱文星; 张健; 张哲峰
Original assignee: Institute of Metal Research of CAS
Current assignee: Institute of Metal Research of CAS
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-06-08

Abstract

The application provides a storage device, which comprises a storage body, a liquid inlet and a liquid outlet; the storage body is provided with a storage chamber; the liquid inlet is communicated with the storage chamber; the liquid inlet is used for guiding the cooling medium to continuously enter the storage chamber; the liquid outlet is communicated with the storage chamber; the liquid outlet is used for discharging the cooling medium above the preset liquid level in the storage chamber. According to the storage device of the application, the liquid level stability of the cooling medium can be effectively guaranteed.

Description

Storage device

Technical Field

The application belongs to the technical field of storage, and particularly relates to a storage device.

Background

At present, with the rapid development of scientific technology, refrigeration and low-temperature technology have been developed very rapidly, and especially in recent years, research and application thereof are extremely active, so that the technology has penetrated into many fields such as military, energy, environment, transportation, medical treatment, industry and agriculture, and becomes one of indispensable pillar forces for promoting social development. Refrigeration and cryogenic technology are widely applied, and particularly in large-scale cryogenic engineering, objects to be cooled need to be kept at a very low temperature for a long time, and then the objects need to be soaked in a cryogenic liquid cooling medium. In addition, the ice template method, material physical property measurement, superflow experiment, astronomical observation and the like all need to create a low-temperature environment by using a low-temperature liquid cooling medium.

The cooling medium adopted in the prior art is a liquid cooling medium, such as liquid nitrogen, low-temperature ethanol and the like. When the liquid cooling medium is used for obtaining low temperature, the liquid level of the cooling medium can directly influence the temperature of a substance to be cooled, and further influence the reliability of characterization data and the structure and performance of a manufactured material, so that the stability of the liquid level of the cooling medium is very important, and the storage device in the prior art cannot guarantee the stability of the liquid level of the cooling medium.

Therefore, how to provide a storage device capable of effectively ensuring the stability of the liquid level of the cooling medium is a problem to be solved by those skilled in the art.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing a storage device, can effectively guarantee cooling medium liquid level stability.

In order to solve the above problem, the present application provides a storage device, including:

a storage body; the storage body is provided with a storage chamber;

a liquid inlet; the liquid inlet is communicated with the storage chamber; the liquid inlet is used for guiding the cooling medium to continuously enter the storage chamber;

and a liquid outlet; the liquid outlet is communicated with the storage chamber; the liquid outlet is used for discharging the cooling medium above the preset liquid level in the storage chamber.

Preferably, the liquid outlet is located at a preset liquid level; and/or the liquid inlet is positioned below the liquid outlet.

Preferably, the storage device further comprises a liquid inlet channel; the outlet end of the liquid inlet channel forms a liquid inlet;

and/or the inlet end of the inlet channel is located above the outlet end of the inlet channel.

Preferably, the storage device further comprises a liquid outlet channel; the inlet end of the liquid outlet channel forms a liquid outlet;

and/or the inlet end of the liquid outlet channel is positioned above the outlet end of the liquid outlet channel.

Preferably, the storage body comprises a box; the box body forms a storage chamber inside.

Preferably, the storage body further comprises a lid; the box body is provided with an opening; the cover body is arranged at the opening; the cover body is provided with a cover body opening.

Preferably, the storage device further comprises a liquid storage part; the liquid inlet is communicated with the liquid storage part; and/or the liquid outlet is communicated with the liquid storage part; and/or the liquid inlet is communicated with the bottom of the storage chamber.

Preferably, the storage body has a housing; a storage chamber is formed inside the shell; the shell comprises an insulating layer; when the storage device further comprises a liquid inlet channel, the liquid inlet channel is arranged in the heat preservation layer;

and/or when the storage device further comprises a liquid outlet channel, the liquid outlet channel is arranged in the heat preservation layer.

Preferably, the housing further comprises an outer shell; the heat preservation layer is arranged on the inner surface of the shell.

Preferably, the insulating layer is made of polystyrene foam or phenolic foam; and/or the housing is made of metal or plastic.

According to the storage device provided by the application, the liquid inlet can guide the cooling medium to continuously enter the storage chamber; the liquid outlet discharges the cooling medium above the preset liquid level in the storage chamber, and the liquid level stability of the cooling medium can be effectively ensured.

Drawings

FIG. 1 is a cross-sectional view of a storage device according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a storage device according to an embodiment of the present disclosure;

FIG. 3 is a graph showing the temperature of slurry at different positions during the preparation process by the ice template method according to the first embodiment of the present invention;

FIG. 4 is a graph showing the temperature of slurry at different positions during the preparation process by the ice template method according to the second embodiment of the present application;

FIG. 5 shows the micro-morphology of a sample prepared by the ice-templating method according to one embodiment of the present invention;

FIG. 6 shows the micro-morphology of a sample prepared by the ice-templating method according to example II of the present application;

FIG. 7 shows the micro-morphology of the sample prepared by the ice-templating method in example III of the present application.

The reference numerals are represented as:

1. a storage chamber; 11. a liquid inlet channel; 111. a liquid inlet; 12. a liquid outlet channel 121 and a liquid outlet; 2. a box body; 21. an opening; 3. a cover body; 31. the cover body is provided with an opening; 41. a housing; 42. and (7) an insulating layer.

Detailed Description

Referring to fig. 1-2 in combination, according to an embodiment of the present application, a storage apparatus includes a storage body, a liquid inlet 111 and a liquid outlet 121; the storage body has a storage chamber 1; the liquid inlet 111 is communicated with the storage chamber 1; the liquid inlet 111 is used for guiding the cooling medium to continuously flow into the storage chamber 1; the liquid outlet 121 is communicated with the storage chamber 1; the liquid outlet 121 is used for discharging a cooling medium above a preset liquid level in the storage chamber 1, and the liquid inlet 111 can guide the cooling medium to continuously enter the storage chamber 1; the liquid outlet 121 discharges the cooling medium above the preset liquid level in the storage chamber 1, so that the liquid level stability of the cooling medium can be effectively ensured; the cooling medium continuously enters the storage chamber 1 through the liquid inlet 111, and is discharged out of the storage chamber 1 through the liquid outlet 121, so that the liquid level is stably maintained at the preset liquid level, and the liquid level of the liquid cooling medium in the container can be effectively kept constant. The storage device is a heat-insulating container, and the storage device can accurately control the liquid level position, reduce the fluctuation of the liquid level of the cooling medium, save the consumption of the low-temperature cooling medium, save the cost of manpower and material resources, and has important significance for improving the stability of production and experiments and improving the efficiency. The automatic liquid supplementing device can effectively solve the problems that in the prior freezing technology, the fluctuation of the liquid level of a cooling medium is large, the liquid level is difficult to control accurately, the manual liquid supplementing times are many, the automatic liquid supplementing device needs to be watched by people all the time, the structure of the automatic liquid supplementing device is complex, the cost is high, the liquid level of a metal contact position is boiling, the consumption of the cooling medium is large, and time, labor and money are wasted.

The application also discloses some embodiments, liquid outlet 121 is located predetermineeing liquid level department, and liquid outlet 121 sets up on the lateral wall of apotheca 1 it has certain height, and liquid in apotheca 1 highly reaches liquid outlet 121 position when predetermineeing the liquid level promptly, can follow liquid outlet 121 position and discharge.

The present application also discloses embodiments in which the inlet 111 is located below the outlet 121. Under the action of gravity or an external force of a pump body such as a liquid nitrogen pump, the liquid cooling medium continuously enters the storage chamber 1 from the liquid inlet 111, liquid in the storage chamber 1 continuously increases, the liquid level in the storage chamber 1 continuously rises, and when the liquid level reaches a preset liquid level, namely the liquid outlet 121, the liquid flows out from the liquid outlet 121, so that the liquid level is always maintained at the preset position. In this dynamic process, the liquid level is always maintained at the liquid outlet 121, the position of the liquid outlet 121 is higher than the position of the liquid inlet 111, and when the liquid inlet 111 is at the bottom of the storage chamber 1, the distance between the liquid outlet 121 and the liquid inlet 111 is the height of the liquid in the storage chamber 1.

The application also discloses embodiments in which the storage device further comprises a liquid inlet channel 11; the outlet end of the liquid inlet channel 11 forms a liquid inlet 111.

The application also discloses embodiments in which the inlet end of the inlet channel 11 is located above the outlet end of the inlet channel 11.

The application also discloses embodiments, the storage device further comprises a liquid outlet channel 12; the inlet end of the outlet channel 12 forms an outlet opening 121.

The application also discloses embodiments where the inlet end of the outlet channel 12 is located above the outlet end of the outlet channel 12. The inlet end of the liquid outlet channel 12 forms a liquid outlet 121, and the inlet end of the liquid outlet channel 12 is positioned below the outlet end of the liquid outlet channel 12; the liquid cooling medium can sequentially enter the liquid inlet channel 11 from the inlet end of the liquid inlet channel 11 under the action of gravity, and then continuously enter the storage chamber 1 from the outlet end of the liquid inlet channel 11, namely the liquid inlet 111, the liquid in the storage chamber 1 is continuously increased, the liquid level in the storage chamber 1 continuously rises, and when the liquid level reaches the preset liquid level, namely the liquid outlet 121, the liquid flows out from the liquid outlet 121 and continuously flows out through the liquid outlet channel 12 under the action of gravity; during this dynamic process, the liquid level is maintained at the preset position at all times. Such a mode of setting for liquid cooling medium directly flows in and flows out under the effect of gravity, then only need not coolant pump or other modes through gravity and just can make in coolant constantly flows into apotheca 1, and the inlet liquid pipe can directly insert inlet 111 vertically simultaneously, need not extra fixed mode, easily dismantles, and the operation is simple and easy.

The application also discloses embodiments, wherein the storage body comprises a box body 2; the case 2 internally forms a storage chamber 1. The inlet end of the liquid inlet channel 11 can be arranged at the top of the box body 2, when the cooling medium is introduced, the inlet end of the liquid inlet channel 11 can be directly externally connected with a liquid inlet pipe, and liquid can be directly added by using gravity or by using liquid cooling medium pumps and other modes.

The inlet end of the liquid inlet channel 11 can also be arranged on the side surface of the box body 2, and after the liquid inlet pipe is inserted into the inlet end of the liquid inlet channel 11, the liquid inlet pipe is additionally fixed by adopting a fixing structure, so that the connection is firmer, the sealing and heat-insulating performance is better, and the consumption of cooling media is less.

The application also discloses embodiments, the storage body further comprises a cover body 3; the case 2 has an opening 21; the cover body 3 is arranged at the opening 21; the lid 3 is provided with a lid opening 31. The lid opening 31 may serve as a sample inlet, viewing port, operating window, and the like.

The application also discloses some embodiments, the storage device further comprises a liquid storage part; the liquid inlet 111 is communicated with the liquid storage part. The cooling medium flowing out of the liquid outlet 121 flows back into the liquid reservoir; the cooling medium in the liquid storage part flows into the storage chamber 1 through the liquid inlet 111 to form a circulating flow path, thereby saving resources.

The application also discloses some embodiments, the storage device further comprises a recovery device, and the recovery device is communicated with the liquid outlet 121 and the liquid storage part; the cooling medium flowing out of the liquid outlet 121 continuously enters the recovery device for recovery, and then the cooling medium in the recovery device flows back to the liquid storage part for standby.

The application also discloses embodiments in which the liquid outlet 121 is in communication with a liquid reservoir;

the present application also discloses embodiments in which the liquid inlet 111 communicates to the bottom of the reservoir 1.

The present application also discloses embodiments in which the storage body has a housing; a storage chamber 1 is formed inside the shell; the housing includes an insulating layer 42; when the storage device further comprises the liquid inlet channel 11, the liquid inlet channel 11 is arranged in the heat insulation layer 42; the shell is of an integrated structure, an additional fixing mode is not needed, the connection is firm, liquid nitrogen is easy to recover and disassemble, the operation is simple and easy, and the sealing and heat-insulating performance is good. The liquid level of the liquid cooling medium of assurance low temperature is stable under the state that can be unattended, and this container simple structure, no metal connection department, no cooling medium liquid level bumping phenomenon, the liquid level is undulant little for the liquid level is close to stably unchangeable, makes the result more reliable, makes the staff need not pay close attention to the cooling medium problem of volatilizing, needn't manual fluid infusion again, labour saving and time saving, the cost of manufacture is lower simultaneously, the convenient preparation installation, the quality is light, easy transportation transport.

The application also discloses embodiments where the storage device further comprises a liquid outlet channel 12, the liquid outlet channel 12 is arranged in the insulation layer 42.

The present application also discloses embodiments, the housing further comprising a shell 41; the insulating layer 42 is provided on the inner surface of the case 41. The shape of the case 2 and the storage chamber 1 may be one of a cylinder, a rectangular parallelepiped, and the like.

The present application also discloses embodiments in which the insulation layer 42 is made of polystyrene foam or phenolic foam;

the present application also discloses embodiments where the housing 41 is made of metal or plastic; the material strength of the housing 41 is higher than that of the insulating layer 42.

Example one

Product information: a storage device comprises a box body 2 and a cover body 3, wherein heat preservation layers 42 of the box body 2 and the cover body 3 are made of polystyrene heat preservation foam materials. The case 41 of the box body 2 and the cover body 3 are both made of plastic materials and are fixed by the case 41. The box body 2 is a cylinder with the outer diameter of 35cm and the height of 30cm, the storage chamber 1 is a cylindrical cavity with the diameter of 20cm and the height of 25cm, and the liquid inlet channel 11 and the liquid outlet channel 12 are cylindrical channels with the diameter of 2 cm. The cover body 3 is provided with a cover body opening 31, and the shape of the cover body opening 31 is a cuboid, and the size is 4cm x 2 cm. The box body 2 is provided with a storage chamber 1 for containing a cooling medium; the liquid inlet channel 11 and the liquid outlet channel 12 are arranged in the heat insulation layer 42 of the shell. The storage chamber 1 is communicated with the liquid inlet channel 11 and the liquid outlet channel 12. The liquid inlet channel 11 is positioned at the upper side part of the foam box body 2, the liquid inlet channel 11 is connected with the bottom of the storage chamber 1 through a liquid inlet 111, namely the liquid inlet 111 is arranged at the bottom of the storage chamber 1; the liquid outlet channel 12 is positioned at the other side of the foam box body 2, and the liquid outlet channel 12 is communicated with the storage chamber 1 through a liquid outlet 121. The liquid inlet channel 11 is arranged opposite to the liquid outlet channel 12. The inlet end of the liquid inlet channel 11 and the outlet end of the liquid outlet channel 12 are both arranged at the side part of the box body 2. The inlet end of the liquid inlet channel 11 is higher than the outlet end of the liquid inlet channel 11; the inlet end of the outlet channel 12 is higher than the outlet end of the outlet channel 12. The distance of the liquid outlet 121 from the bottom of the storage chamber 1 is 18cm, i.e. the height of the cooling medium in the storage chamber 1 is 18 cm.

And (3) product testing: in the process of an ice template experiment, liquid nitrogen is used as a cooling medium, the ice template experiment device is placed on a platform, liquid nitrogen in a liquid nitrogen tank is pumped in from a liquid inlet 111 by a cryogenic pump, the flow rate of the liquid nitrogen pump is 0.5L/min, the liquid nitrogen flows through a liquid inlet channel 11 and is stored in a storage chamber 1, the height of the liquid nitrogen in the storage chamber 1 is continuously increased along with the continuous pumping of the liquid nitrogen, and when the liquid level reaches a certain height, the liquid nitrogen flows out through a liquid outlet channel 12 communicated with the storage chamber 1 and flows into a liquid nitrogen recovery device through a liquid outlet 121 for recovery treatment.

And (3) testing results:

by observation: the liquid nitrogen continuously flows into the storage chamber 1 from the liquid inlet 111 through the liquid inlet channel 11, and after reaching a certain height, the liquid nitrogen continuously flows out from the liquid outlet channel 12 and continuously flows into the recovery tank through the liquid outlet 121, and the liquid level is always positioned at the lowest end of the liquid outlet channel 12 in the process, so that the liquid level fluctuation is small, and the liquid level is kept in a stable state. The flow rate of the cryogenic pump can be adjusted at any time, so that the amount of liquid nitrogen pumped into the storage chamber 1 in unit time is slightly larger than the volatile amount of the liquid nitrogen, and the liquid outlet 121 is ensured to flow out of the liquid nitrogen all the time.

By observation: the device has no metal joint, no liquid nitrogen bumping phenomenon, stable liquid level and less liquid nitrogen volatilization.

Under the action of the automatic servo mechanism, a sample with a sample size of 3cm by 12cm enters the storage chamber 1 from the cover opening 31 on the cover 3 at a speed of 0.8mm/min, and is frozen under the action of liquid nitrogen with a smooth interface.

Under the condition, the sample prepared by the ice template method has a complete structure and no crack, which indicates that the liquid level fluctuation is small in the freezing process.

Referring to fig. 5, in the microstructure of the sample prepared by the ice template method under the condition, the sample has a layered structure, and the layered structure is uniform, which indicates that the temperature gradient inside the sample is kept uniform overall and the liquid level fluctuation of liquid nitrogen is small when the sample is frozen.

See also fig. 3 for a combination: under the condition, the temperature of the slurry at different positions in the process of preparing the sample by using an ice template method changes along with time, in the preparation process, the temperature of the slurry at a position 7-9cm away from the liquid nitrogen liquid level changes less than 4 ℃ within one hour, the whole temperature is kept stable, the temperature of the slurry at each position is reduced linearly along with time, and the cooling effect of the device is ideal, and the liquid nitrogen liquid level does not fluctuate greatly.

Example two

Product information: a storage device comprises a box body 2 and a cover body 3, wherein heat preservation layers 42 of the box body 2 and the cover body 3 are made of polystyrene heat preservation foam materials. The case 41 of the box body 2 and the cover body 3 are both made of stainless steel fixed cases 41. The box body 2 is a cylinder, the outer diameter of the box body is 35cm, the height of the box body is 40cm, the storage chamber 1 is a cylindrical cavity with the diameter of 20cm and the height of 30cm, and the liquid inlet channel 11 and the liquid outlet channel 12 are cylindrical channels with the diameter of 2 cm. The cover body 3 is provided with a cover body opening 31, and the shape of the cover body opening 31 is a cuboid, and the size is 4cm x 2 cm. The box body 2 is provided with a storage chamber 1 for containing a cooling medium; the liquid inlet channel 11 and the liquid outlet channel 12 are arranged in the heat insulation layer 42 of the shell. The storage chamber 1 is communicated with the liquid inlet channel 11 and the liquid outlet channel 12. The liquid inlet channel 11 is positioned at the upper side part of the foam box body 2, the liquid inlet channel 11 is communicated with the bottom of the storage chamber 1 through a liquid inlet 111, and the liquid outlet channel 12 is positioned at the other side of the foam box body 2. The inlet end of the liquid inlet channel 11 is higher than the outlet end of the liquid inlet channel 11; the inlet end of the outlet channel 12 is higher than the outlet end of the outlet channel 12. The distance of the liquid outlet 121 from the bottom of the storage chamber 1 is 25cm, i.e. the height of the cooling medium in the storage chamber 1 is 25 cm.

And (3) product testing: in the process of an ice template experiment, liquid nitrogen is used as a cooling medium, the ice template device is placed on a platform, a liquid nitrogen recovery tank is placed below the platform, a hole is formed in the platform, the diameter of the hole is larger than that of a liquid outlet 121 of the ice template device, and a liquid outlet nozzle penetrates through the hole and is opposite to an inlet of the liquid nitrogen recovery tank below the hole.

Utilize cryogenic pump to go into liquid nitrogen in the liquid nitrogen container from inlet 111, liquid nitrogen pump flow rate is 1L/min, and the liquid nitrogen flows through inlet channel 11 and stores in storage chamber 1, and along with the liquid nitrogen is constantly being pumped into, the liquid nitrogen height in the storage chamber 1 constantly risees, and after the liquid level reached certain height, the liquid nitrogen flowed out through outlet channel 12 that is linked together with storage chamber 1 again, flowed into liquid nitrogen recovery unit through liquid outlet 121 and carries out recovery processing.

And (3) testing results:

the liquid nitrogen continuously flows into the storage chamber 1 from the liquid inlet 111 through the liquid inlet channel 11, and after reaching a certain height, the liquid nitrogen continuously flows out from the liquid outlet channel 12 and continuously flows into the recovery tank through the liquid outlet 121, and the liquid level is always positioned at the lowest end of the liquid outlet channel 12 in the process, so that the liquid level is kept in a stable state with small liquid level fluctuation.

Meanwhile, the flow rate of the cryogenic pump can be adjusted at any time, so that the amount of liquid nitrogen pumped into the storage chamber 1 in unit time is slightly larger than the volatile amount of the liquid nitrogen, and the liquid outlet 121 is ensured to always flow out of the liquid nitrogen.

The observation shows that the device has no metal connection part on the whole, no bumping phenomenon of liquid nitrogen, stable liquid level and less volatilization of liquid nitrogen.

Under the action of the automatic servo mechanism, a sample with a sample size of 3cm by 18cm enters the storage chamber 1 from the cover opening 31 on the cover 3 at a speed of 0.2mm/min, and is frozen under the action of liquid nitrogen with a smooth interface.

Referring to fig. 6, the microstructure of the sample prepared by the ice template method under the condition has a layered structure, and the layered structure is uniform, which indicates that the temperature gradient inside the sample is kept uniform overall and the liquid level fluctuation of liquid nitrogen is small when the sample is frozen.

Referring to fig. 4, the temperature change of the slurry at different positions in the sample preparation process by using the ice template method under the condition is less than 2 ℃ within 50 minutes, the temperature of the slurry at the position 3-7cm away from the liquid nitrogen liquid level is basically kept stable, and the temperature of the slurry at each position is basically kept unchanged along with the time change, so that the cooling effect of the device is ideal, and the liquid nitrogen liquid level does not fluctuate greatly. Compared with the graph in fig. 3, it can be known that the liquid nitrogen flow is increased, and the speed of the sample entering the liquid nitrogen is reduced, so that the liquid level of the liquid nitrogen is kept stable.

EXAMPLE III

Product information: a storage device comprises a box body 2 and a cover body 3, wherein heat preservation layers 42 of the box body 2 and the cover body 3 are made of polystyrene heat preservation foam materials. The cover body 3 is provided with a cover body opening 31, and the shape of the cover body opening 31 is a cuboid, and the size is 3cm x 2 cm. Wherein, the box body 2 is a cylinder, the outer diameter is 20cm, the height is 20cm, the storage chamber 1 is a cylinder cavity with the diameter of 20cm and the height of 18cm, and the liquid inlet channel 11 and the liquid outlet channel 12 are cylindrical channels with the diameter of 2 cm. The box body 2 is provided with a storage chamber 1 for containing a cooling medium; the liquid inlet channel 11 and the liquid outlet channel 12 are arranged in the heat insulation layer 42 of the shell. The storage chamber 1 is communicated with the liquid inlet channel 11 and the liquid outlet channel 12. The liquid inlet channel 11 is positioned at the upper side part of the foam box body 2, the liquid inlet channel 11 is connected with the bottom of the storage chamber 1 through a liquid inlet 111, the liquid outlet channel 12 is positioned at the other side of the foam box body 2, and the liquid outlet channel 12 is communicated with the storage chamber 1 through a liquid outlet 121. The box body 2 is also provided with a liquid inlet 111 and a liquid outlet 121, the liquid inlet 111 and the liquid outlet 121 are both positioned at the outer side part of the box body 2, the liquid inlet 111 is communicated with the liquid inlet channel 11, and the liquid outlet 121 is communicated with the liquid outlet channel 12. The distance of the liquid outlet 121 from the bottom of the storage chamber 1 is 16cm, i.e. the height of the cooling medium in the storage chamber 1 is 16 cm.

And (3) product testing: in the process of an ice template experiment, liquid nitrogen is used as a cooling medium, the ice template experiment device is placed on a platform, liquid nitrogen in a liquid nitrogen tank is pumped in from a liquid inlet 111 by a cryogenic pump, the flow rate of the liquid nitrogen pump is 0.7L/min, the liquid nitrogen flows through a liquid inlet channel 11 and is stored in a storage chamber 1, the height of the liquid nitrogen in the storage chamber 1 is continuously increased along with the continuous pumping of the liquid nitrogen, and when the liquid level reaches a certain height, the liquid nitrogen flows out through a liquid outlet channel 12 communicated with the storage chamber 1 and flows into a liquid nitrogen recovery device through a liquid outlet 121 for recovery treatment.

And (3) testing results:

liquid nitrogen continuously flows into the storage chamber 1 from the liquid inlet 111 through the liquid inlet channel 11, and after reaching a certain height, the liquid nitrogen continuously flows out from the liquid outlet channel 12 and continuously flows into the recovery tank through the liquid outlet 121, the liquid level is always positioned at the lowest end of the liquid outlet 121 in the process, and the liquid level with small liquid level fluctuation keeps a stable state.

In the process, the flow rate of the cryogenic pump can be adjusted at any time, so that the amount of liquid nitrogen pumped into the storage chamber 1 in unit time is slightly larger than the volatile amount of the liquid nitrogen, and the liquid outlet 121 is ensured to always flow out of the liquid nitrogen.

Under the action of the automatic servo mechanism, a sample with a sample size of 3cm by 15cm enters the storage chamber 1 from the cover opening 31 on the cover 3 at a speed of 0.1mm/min, and is frozen under the action of liquid nitrogen with a smooth interface.

Referring to fig. 7, the sample prepared by the ice template method under the condition has a complete structure and no cracks, which indicates that the liquid level fluctuation is small in the freezing process.

In the microstructure of the sample prepared by the ice template method under the condition, the sample has a layered structure which is uniform, which indicates that the temperature gradient in the sample is kept uniform and the liquid level fluctuation of liquid nitrogen is small when the sample is frozen.

To sum up, this application storage device's heat preservation is sealed effectual, device simple structure, and the cost of manufacture is lower, makes things convenient for the installation, and the quality is light, easily transports the transport, can guarantee under unmanned guard's state that the liquid level of the liquid cooling medium of low temperature in preparation technologies such as ice mold board is stable unchangeable, avoids the big fluctuation to appear in the cooling medium interface, avoids artifical manual fluid infusion, labour saving and time saving.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. A storage device, comprising:

a storage body; the storage body has a storage chamber (1);

a liquid inlet (111); the liquid inlet (111) is communicated with the storage chamber (1); the liquid inlet (111) is used for guiding a cooling medium to continuously enter the storage chamber (1);

and a liquid outlet (121); the liquid outlet (121) is communicated with the storage chamber (1); the liquid outlet (121) is used for discharging the cooling medium above a preset liquid level in the storage chamber (1).

2. Storage device as claimed in claim 1, characterized in that said outlet (121) is located at said preset level; and/or the liquid inlet (111) is positioned below the liquid outlet (121).

3. A storage device according to claim 1, characterized in that it further comprises a liquid intake channel (11); the outlet end of the liquid inlet channel (11) forms the liquid inlet (111);

and/or the inlet end of the liquid inlet channel (11) is positioned above the outlet end of the liquid inlet channel (11).

4. A storage device as claimed in claim 1, characterized in that the storage device further comprises a tapping channel (12); the inlet end of the liquid outlet channel (12) forms the liquid outlet (121);

and/or the inlet end of the liquid outlet channel (12) is positioned above the outlet end of the liquid outlet channel (12).

5. A storage device as claimed in claim 1, characterized in that said storage body comprises a box (2); the storage chamber (1) is formed inside the box body (2).

6. A storage device as claimed in claim 5, characterized in that said storage body further comprises a cover (3); the box body (2) is provided with an opening (21); the cover body (3) is arranged at the opening (21) in a covering manner; the cover body (3) is provided with a cover body opening (31).

7. The storage device of claim 1, further comprising a reservoir; the liquid inlet (111) is communicated with the liquid storage part; and/or the liquid outlet (121) is communicated with the liquid storage part; and/or the liquid inlet (111) is communicated to the bottom of the storage chamber (1).

8. A storage device as claimed in any of claims 3 to 4, wherein the storage body has a housing; the housing forming the storage chamber (1) inside; the housing includes an insulating layer (42); when the storage device further comprises a liquid inlet channel (11), the liquid inlet channel (11) is arranged in the heat insulation layer (42);

and/or, when the storage device further comprises a liquid outlet channel (12), the liquid outlet channel (12) is arranged in the heat insulation layer (42).

9. The storage device of claim 8, wherein the housing further comprises an outer shell (41); the heat insulation layer (42) is arranged on the inner surface of the shell (41).

10. The storage device of claim 9, wherein the insulation layer (42) is made of polystyrene foam or phenolic foam; and/or the housing (41) is made of metal or plastic.