Liquid nitrogen tank cooling device

Abstract

The utility model discloses a liquid nitrogen tank cooling device. The positioning device comprises a positioning frame, the restraining part comprises a limiting table and is arranged on the positioning frame; the filling component comprises an adjusting rod which is vertically and slidably arranged in the limiting table in a penetrating manner, and the bottom of the adjusting rod extends into the tank body; the conveying pipe vertically penetrates through the adjusting rod and is rotationally connected with the adjusting rod, and a spray head is arranged at the bottom of the conveying pipe; the transmission assembly is arranged in the adjusting rod and connected with the conveying pipe; the adjusting part is arranged on the positioning frame and is connected with the adjusting rod; the pressure relief unit is arranged in the limiting table; according to the liquid nitrogen spraying device, after the limiting table blocks the opening of the tank body, the adjusting component drives the spray head to move to the preset position through the adjusting rod, then liquid nitrogen is conveyed into the spray head through the conveying pipe, and meanwhile the transmission assembly drives the conveying pipe to rotate so that the liquid nitrogen can be rotationally sprayed in the tank body, so that the inner wall of the tank body is cooled in the first time; and then the liquid nitrogen flows downwards and is accumulated, so that the cooling efficiency is improved, and the cryopreservation waiting time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen tank technology, and in particular to a liquid nitrogen tank cooling device. Background Technology

[0002] A liquid nitrogen tank is a cryogenic storage device that utilizes the extremely low temperature characteristics of liquid nitrogen to preserve biological samples for a long time. Its core function is to maintain the low temperature environment of liquid nitrogen through vacuum insulation technology. It is commonly used in the fields of biomedicine, aerospace industry and other technical fields.

[0003] The existing liquid nitrogen replenishment method usually involves pouring liquid nitrogen directly from the top opening of the liquid nitrogen tank. After replenishment, the liquid nitrogen tank usually needs to be left to stand for a period of time to allow the inner wall temperature of the liquid nitrogen tank to drop to a certain required temperature before the sample to be frozen is placed into the liquid nitrogen tank. The freezing time is relatively long and the cooling efficiency is limited.

[0004] Therefore, a liquid nitrogen tank cooling device that can reduce freezing waiting time and improve cooling efficiency is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a liquid nitrogen tank cooling device that improves cooling efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a liquid nitrogen tank cooling device, including a positioning frame;

[0007] A constraint component, including a limiting platform, is disposed on the positioning frame and located above the tank opening, for sealing the tank opening;

[0008] The filling component includes an adjusting rod that slides vertically through the limiting platform, with its bottom extending into the inner cavity of the can.

[0009] A delivery pipe is vertically inserted into the adjusting rod and rotatably connected to it, with its bottom extending into the cavity inside the tank and connected to a nozzle;

[0010] A transmission component is disposed in the adjusting rod, one end of which is connected to the conveying pipe and is used to drive the conveying pipe to rotate.

[0011] An adjustment component is mounted on the positioning frame, with one end connected to the adjustment rod, for driving the adjustment rod to move vertically up and down;

[0012] A pressure relief unit is installed in the limiting platform to release gas from the tank.

[0013] Furthermore, the extended end of the adjusting rod has a chamber, and the delivery pipe passes through the chamber;

[0014] The transmission assembly includes;

[0015] The first gear is coaxially mounted on the conveying pipe and located within the cavity;

[0016] The first power unit is disposed in the chamber and located on one side of the delivery pipe, and its moving end is provided with a second gear that meshes with the first gear.

[0017] Furthermore, a vertical rack is provided on one side of the adjusting rod;

[0018] The adjustment component includes;

[0019] The second power unit is mounted on the positioning frame, and its moving end is provided with a third gear that meshes with the rack.

[0020] Furthermore, the limiting platform has a telescopic structure;

[0021] The constraint component also includes:

[0022] A handle is vertically slidably inserted into the limiting platform and connected to its telescopic end, with the top of the handle extending out of the limiting platform;

[0023] An elastic unit is disposed between the fixed end and the telescopic end of the limiting platform, and is used to apply vertically downward pressure to its telescopic end.

[0024] Furthermore, a pressure relief channel is provided on the telescopic end of the limiting platform;

[0025] The pressure relief unit includes a one-way valve disposed in the pressure relief channel for discharging the gas inside the tank to the outside.

[0026] The beneficial effects of this utility model are reflected in:

[0027] This invention utilizes the cooperation between the filling component and the adjusting component. After the limiting platform seals the tank opening, the adjusting component moves the nozzle to a predetermined position via the adjusting rod. Liquid nitrogen is then transported into the nozzle through the conveying pipe. Simultaneously, the transmission component drives the conveying pipe to rotate, causing the liquid nitrogen to rotate and spray within the tank, ensuring that the liquid nitrogen is evenly sprayed onto the inner wall of the tank to cool the inner wall immediately. Subsequently, the liquid nitrogen flows downward and accumulates, continuously cooling the inner wall of the tank, thus improving cooling efficiency and reducing freezing waiting time. Attached Figure Description

[0028] Figure 1 This is a perspective view of the liquid nitrogen tank cooling device described in this utility model;

[0029] Figure 2 This is a cross-sectional view of the liquid nitrogen tank cooling device described in this utility model;

[0030] Figure 3 for Figure 2 A magnified view of point A in the middle.

[0031] In the picture:

[0032] 01. Tank body; 1. Positioning frame; 2. Restraining component; 21. Limiting platform; 211. Pressure relief channel; 22. Handle; 23. Elastic unit; 3. Filling component; 31. Adjusting rod; 311. Chamber; 32. Conveying pipe; 33. Transmission assembly; 331. First gear; 332. First power unit; 333. Second gear; 34. Nozzle; 4. Adjusting component; 41. Second power unit; 42. Third gear; 5. Rack; 6. Check valve. Detailed Implementation

[0033] 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 a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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 scope of protection of the present utility model.

[0034] Please see Figure 1-3 This utility model discloses a liquid nitrogen tank cooling device, including a positioning frame 1;

[0035] The constraint component 2 includes a limiting platform 21, which is set on the positioning frame 1 and located above the opening of the tank body 01, for sealing the tank opening;

[0036] The filling component 3 includes an adjusting rod 31, which is vertically slidably inserted into the limiting platform 21, with its bottom extending into the inner cavity of the tank body 01;

[0037] The conveying pipe 32 is vertically inserted into the adjusting rod 31 and rotatably connected to it. Its top extends out of the adjusting rod 31 and is connected to an external conveying component (not shown in the figure). The conveying component is used to convey liquid nitrogen into the conveying pipe 32. The bottom of the conveying pipe 32 extends into the inner cavity of the tank 01 and is connected to a nozzle 34.

[0038] The transmission component 33 is installed in the adjusting rod 31, and one end of it is connected to the conveying pipe 32 for driving the conveying pipe 32 to rotate.

[0039] Adjustment component 4 is mounted on positioning frame 1, with one end connected to adjustment rod 31, and is used to drive adjustment rod 31 to move vertically up and down;

[0040] The pressure relief unit, located in the limiting platform 21, is used to release gas from the tank.

[0041] In practice, when liquid nitrogen needs to be filled, the staff moves the liquid nitrogen tank to the bottom of the positioning frame 1 and aligns its opening with the limiting platform 21. Then, the staff opens the tank opening and the limiting platform 21 seals it to reduce the amount of liquid nitrogen vaporization and overflow. Then, the adjusting component 4 drives the adjusting rod 31 to move vertically until the adjusting rod 31 drives the nozzle 34 to the predetermined position. Then, the conveying component delivers the liquid nitrogen to the nozzle 34 through the conveying pipe 32. At the same time, the transmission component 33 works and drives the conveying pipe 32 to rotate, so that the liquid nitrogen is sprayed out to the inner wall of the tank 01. Then, the liquid nitrogen flows down along the inner wall of the tank 01 and accumulates, so as to cool the inner wall of the tank 01 in time. At the same time, the pressure relief unit discharges the excess gas in the tank 01 to ensure the stability of the gas pressure inside the tank.

[0042] In this invention, through the cooperation between the filling component 3 and the adjusting component 4, after the limiting platform 21 blocks the opening of the tank 01, the adjusting component 4 drives the nozzle 34 to move to the predetermined position via the adjusting rod 31. Then, liquid nitrogen is transported into the nozzle 34 through the conveying pipe 32. At the same time, the transmission component 33 drives the conveying pipe 32 to rotate, causing the liquid nitrogen to rotate and spray inside the tank 01, so that the liquid nitrogen is evenly sprayed onto the inner wall of the tank 01 to cool the inner wall of the tank 01 in the first time. Then, the liquid nitrogen flows downward and accumulates to continuously cool the inner wall of the tank 01, improves the cooling efficiency, and reduces the freezing waiting time.

[0043] In one embodiment, the extended end of the adjusting rod 31 has a chamber 311, and the top end of the conveying pipe 32 passes through the chamber 311;

[0044] The transmission assembly 33 includes a first gear 331 coaxially mounted on the conveying pipe 32 and located in the chamber 311. The chamber 311 also contains a first power unit 332 located on one side of the conveying pipe 32. The moving end of the first power unit 332 is provided with a second gear 333 that meshes with the first gear 331. The first power unit 332 is used to drive the second gear 333 to rotate.

[0045] With this design, when the conveying pipe 32 needs to be rotated, the first power unit 332 drives the second gear 333 to rotate, and the second gear 333 meshes with the first gear 331 to drive the conveying pipe 32 to rotate.

[0046] Preferably, the first power unit 332 can be an electric motor from the prior art.

[0047] In one embodiment, a groove is vertically provided on one side of the adjusting rod 31, and a rack 5 is vertically provided in the groove;

[0048] The adjustment component 4 includes a second power unit 41 mounted on the positioning frame 1, and a third gear 42 that meshes with the rack 5 on its moving end. The second power unit 41 is used to drive the adjustment rod 31 to move vertically up and down through the third gear 42.

[0049] With this design, when the height of the nozzle 34 needs to be adjusted, the operator drives the third gear 42 to rotate through the second power unit 41 and engages it with the rack 5, thereby driving the adjusting rod 31 to move vertically up and down to the predetermined position.

[0050] Preferably, the second power unit 41 can be a brake motor as used in the prior art.

[0051] It should be noted that since the second power unit 41 is a brake motor, when the third gear 42 stops rotating, the second power unit 41 can prevent the adjusting rod 31 from driving the third gear 42 to rotate in the opposite direction.

[0052] In one embodiment, the limiting platform 21 is a telescopic structure;

[0053] The constraint component 2 also includes a handle 22 that is vertically slidably inserted into the limiting platform 21 and connected to its telescopic end. The top of the handle 22 extends out of the limiting platform 21. An elastic unit 23 is also provided between the fixed end and the telescopic end of the limiting platform 21 to apply vertical downward pressure to its telescopic end.

[0054] With this design, when it is necessary to seal the can opening, the worker pulls up the handle 22 to raise the movable end of the limiting platform 21. At this time, the elastic unit 23 is compressed. Then, the worker moves the can body 01 below the limiting platform 21 and aligns the can opening with the telescopic end of the limiting platform 21. The worker releases the handle 22, the elastic unit 23 loses its constraint and drives the movable end of the limiting platform 21 to descend until it contacts the can opening and seals it. This design can accommodate can bodies 01 of different specifications and improve applicability. When it is necessary to remove the can body 01, the worker pulls up the handle 22 again to separate the limiting platform 21 from the pipe body.

[0055] Preferably, the elastic unit 23 can be a spring from the prior art.

[0056] In one embodiment, a pressure relief channel 211 is provided on the telescopic end of the limiting platform 21;

[0057] The pressure relief unit includes a one-way valve 6 built into the pressure relief channel 211 for discharging gas from the tank to the outside.

[0058] With this design, when the filling component 3 delivers liquid nitrogen into the tank 01, the excess gas in the tank 01 is compressed and discharged from the tank 01 through the pressure relief channel 211 via the one-way valve 6, so as to avoid excessive gas pressure in the tank 01.

[0059] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0060] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0061] Additionally, "multiple" refers to two or more.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid nitrogen tank cooling device, characterized in that, Including the positioning frame (1); The constraint component (2), including the limiting platform (21), is disposed on the positioning frame (1) and located above the opening of the tank (01) for sealing the opening of the tank (01); The filling component (3) includes an adjusting rod (31) that slides vertically through the limiting platform (21) and whose bottom extends into the inner cavity of the can body (01); The delivery pipe (32) is vertically inserted into the adjusting rod (31) and rotatably connected to it. Its bottom extends into the inner cavity of the tank (01) and is connected to a nozzle (34). A transmission assembly (33) is disposed in the adjusting rod (31), one end of which is connected to the conveying pipe (32) for driving the conveying pipe (32) to rotate; An adjusting component (4) is provided on the positioning frame (1), one end of which is connected to the adjusting rod (31) and is used to drive the adjusting rod (31) to move vertically up and down; The pressure relief unit is installed in the limiting platform (21) and is used to release the gas in the tank.

2. The liquid nitrogen tank cooling device according to claim 1, characterized in that: The extended end of the adjusting rod (31) has a cavity (311), and the conveying pipe (32) passes through the cavity (311); The transmission assembly (33) includes; The first gear (331) is coaxially mounted on the conveying pipe (32) and located inside the chamber (311); The first power unit (332) is disposed in the chamber (311) and located on one side of the delivery pipe (32), and its moving end is provided with a second gear (333) that meshes with the first gear (331).

3. The liquid nitrogen tank cooling device according to claim 1, characterized in that: A vertical rack (5) is provided on one side of the adjusting rod (31); The adjusting component (4) includes; The second power unit (41) is mounted on the positioning frame (1), and its moving end is provided with a third gear (42) that meshes with the rack (5).

4. The liquid nitrogen tank cooling device according to claim 1, characterized in that: The limiting platform (21) has a telescopic structure; The constraint component (2) further includes: A handle (22) is vertically slidably inserted into the limiting platform (21) and connected to its telescopic end, with the top of the handle (22) extending out of the limiting platform (21); An elastic unit (23) is disposed between the fixed end and the telescopic end of the limiting platform (21) to apply vertical downward pressure to its telescopic end.

5. The liquid nitrogen tank cooling device according to claim 1, characterized in that: The telescopic end of the limiting platform (21) is provided with a pressure relief channel (211); The pressure relief unit includes a one-way valve (6) disposed in the pressure relief channel (211) for discharging the gas inside the tank to the outside.

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