Device for measuring height of liquid nitrogen in liquid nitrogen tank

Abstract

The utility model relates to the technical field of liquid nitrogen tanks, in particular to a device for measuring the height of liquid nitrogen in a liquid nitrogen tank, which comprises a liquid nitrogen tank body and an upper cover, the upper cover is arranged at the top of the liquid nitrogen tank body, one side of the top of the upper cover is fixedly connected with a first L-shaped plate, and the top of the upper cover is rotatably connected with a threaded rod. The top of the threaded rod extends to the position above the first L-shaped plate and is fixedly connected with an adjusting handle, the outer portion of the threaded rod is in threaded connection with a supporting plate, the bottom of the supporting plate is fixedly connected with a connecting rod, and the bottom of the connecting rod penetrates through the upper cover and is fixedly connected with a connecting plate. The liquid nitrogen tank has the beneficial effects that the residual amount of the liquid nitrogen can be accurately known, sufficient supply of the liquid nitrogen is ensured, the situation that the liquid nitrogen is insufficient at a critical moment is avoided, and the monitoring of the liquid nitrogen amount is beneficial to better maintenance and management of the liquid nitrogen tank, for example, the condition of the tank body is supplemented or checked in time, the service life of equipment is prolonged, and the operation efficiency is improved; compared with a traditional device, the operation quality and the use efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen tanks, in particular to a device for measuring the height of liquid nitrogen in a liquid nitrogen tank. Background Art

[0002] Liquid nitrogen tank is a container specially used for storing and transporting liquid nitrogen. It is designed to maintain low temperature for a long time to prevent liquid nitrogen from evaporating too quickly. The liquid nitrogen height measuring device in the liquid nitrogen tank is mainly used to monitor and manage the storage amount of liquid nitrogen to ensure the effective use and replenishment of liquid nitrogen.

[0003] After searching, a Chinese patent discloses a liquid nitrogen tank bucket (authorization announcement number CN220536360U) including a barrel body, two semicircular barrel covers are hinged on the barrel body, and a fixing hook is provided on one side of the barrel body. The characteristics are: a bag assembly is provided inside the barrel body, an auxiliary assembly is provided on the barrel body, the bag assembly includes a bag body, a retractable rope is provided at the upper end of the bag body, and a label is provided on the outer side wall of the bag body. The sample specimen is placed inside the bag body, closed by the retractable rope, and the upper end of the retractable rope is tied to the end of the fixing hook. Although the above patent technology can make it more convenient to take the sample specimen, it can quickly distinguish multiple types of samples such as feces and serum;

[0004] However, in the actual application of this patented technology, the above-mentioned liquid nitrogen tank cannot measure the height of liquid nitrogen when in use. On the one hand, it is impossible to monitor the remaining amount of liquid nitrogen in real time, resulting in the depletion of liquid nitrogen at a critical moment, affecting the experiment or production process. On the other hand, in scientific research and industrial applications, the accurate amount of liquid nitrogen is very important for the experiment and production process. The lack of accurate monitoring of the liquid nitrogen amount may lead to interruption of the experiment or work flow, affecting the overall efficiency. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a device for measuring the height of liquid nitrogen in a liquid nitrogen tank.

[0006] The technical solution of the utility model is as follows: a device for measuring the height of liquid nitrogen in a liquid nitrogen tank, comprising a liquid nitrogen tank body and an upper cover, wherein the upper cover is arranged on the top of the liquid nitrogen tank body, a first L-shaped plate is fixedly connected to one side of the top of the upper cover, a threaded rod is rotatably connected to the top of the upper cover, the top of the threaded rod extends to the top of the first L-shaped plate and is fixedly connected to an adjustment handle, the outer thread of the threaded rod is connected to a support plate, the bottom of the support plate is fixedly connected to a connecting rod, the bottom of the connecting rod passes through the upper cover and is fixedly connected to the connecting plate, and the bottom of the connecting plate is fixedly connected to a contact sensor.

[0007] Through the above technical solution, the core parts are the liquid nitrogen tank body and the upper cover. The upper cover is located on the top of the liquid nitrogen tank body. This design cooperates with the first L-shaped plate on one side of the top of the upper cover and the threaded rod rotatably connected to the top. The top of the threaded rod extends and is connected with an adjustment handle. The support plate is driven to move vertically through the action of the thread, so as to adjust the position of the connecting rod and the connecting plate. The contact sensor at the bottom of the connecting plate is used to measure the height of liquid nitrogen. By manually adjusting the threaded rod, the user can flexibly adjust the position of the contact sensor to adapt to the measurement needs of liquid nitrogen at different heights, thereby improving the flexibility and accuracy of the measurement.

[0008] As a preferred embodiment, a first fixing plate is fixedly connected to the outer side of the liquid nitrogen tank body, a second L-shaped plate is fixedly connected to the outer side of the first fixing plate, a screw is rotatably connected to the top of the first fixing plate, the top of the screw is rotatably connected to the bottom of the second L-shaped plate, the external thread of the screw is connected to the second fixing plate, the second fixing plate is fixedly connected to the outer side of the upper cover, a motor is fixedly connected to the top of the second L-shaped plate, and the output shaft of the motor passes through the second L-shaped plate and is fixedly connected to the top of the screw.

[0009] Through the above technical solution, through the screw connection at the top of the first fixed plate, the top of the screw is connected to the output shaft of the motor, and the motor adjusts the position of the second fixed plate by rotating the screw, thereby realizing a close connection between the upper cover and the liquid nitrogen tank body. The connection mechanism controlled by the motor makes the connection between the upper cover and the liquid nitrogen tank body faster and more stable, ensuring the sealing during the measurement process and reducing the evaporation loss of liquid nitrogen.

[0010] As a preferred embodiment, the top of the first fixed plate and both sides of the screw rod are fixedly connected to the limiting rod, the top of the limiting rod is fixedly connected to the bottom of the second L-shaped plate, and the second fixed plate is slidably connected to the limiting rod.

[0011] Through the above technical solution, the second fixing plate can limit the lifting trajectory of the upper cover by being slidably connected to the limiting rod.

[0012] As a preferred embodiment, a T-shaped groove is formed on one side of the first L-shaped plate, a T-shaped block is slidably connected inside the T-shaped groove, and one side of the T-shaped block is fixedly connected to the outer side of the support plate.

[0013] Through the above technical solution, the support plate can maintain balance when adjusting the height, ensuring the stability and accuracy of the contact sensor when measuring the height of liquid nitrogen, and improving the reliability of the measurement result.

[0014] As a preferred implementation, a sealing gasket is fixedly connected to the bottom of the upper cover, a sealing groove is provided on the top of the liquid nitrogen tank body, and the sealing gasket is used in conjunction with the sealing groove.

[0015] Through the above technical solution, the design of the sealing gasket and the sealing groove effectively prevents the leakage of liquid nitrogen, ensures the safe storage and use of liquid nitrogen, and at the same time reduces the evaporation of liquid nitrogen and saves resources.

[0016] As a preferred embodiment, a liquid discharge pipe is fixedly connected to the outer side of the liquid nitrogen tank body, one end of the liquid discharge pipe extends to the inside of the liquid nitrogen tank body, and a control switch is arranged outside the liquid discharge pipe.

[0017] Through the above technical solution, the design of the liquid discharge pipe and the control switch provides a convenient and quick way to discharge liquid nitrogen, so that the user can easily control the release of liquid nitrogen when needed, thereby improving the convenience of use.

[0018] As a preferred implementation, three supporting legs are fixedly connected to the bottom of the liquid nitrogen tank body.

[0019] Through the above technical solution, the support legs improve the stability of the device, protect the bottom from direct contact with the ground, reduce wear and tear, and extend the service life of the equipment.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] In the utility model, when the above-mentioned liquid nitrogen tank is in use, the adjusting handle is manually rotated so that the support plate is driven to rise and fall through the rotation of the threaded rod, so that the contact sensor is driven by the connecting rod to measure the height of the liquid nitrogen inside the liquid nitrogen tank body. On the one hand, the remaining amount of liquid nitrogen can be accurately understood to ensure sufficient supply of liquid nitrogen and avoid the situation of insufficient liquid nitrogen at a critical moment. On the other hand, monitoring the amount of liquid nitrogen helps to better maintain and manage the liquid nitrogen tank, such as timely replenishment or inspection of the tank condition, extending the service life of the equipment, and improving the operating efficiency. Compared with traditional devices, the operation quality and use efficiency are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a first-perspective stereogram of the present invention;

[0023] Figure 2 It is a second perspective stereogram of the utility model;

[0024] Figure 3 This is a schematic diagram of the second L-shaped plate structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the liquid nitrogen tank body of the utility model;

[0026] Figure 5 It is an exploded view of the local structure of the utility model;

[0027] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0028] Legend: 1. Liquid nitrogen tank body; 2. Upper cover; 3. First L-shaped plate; 4. Threaded rod; 5. Adjustment handle; 6. Support plate; 7. Connecting rod; 8. Connecting plate; 9. Contact sensor; 10. First fixed plate; 11. Second fixed plate; 12. Second L-shaped plate; 13. Screw rod; 14. Motor; 15. Limit rod; 16. T-shaped block; 17. T-shaped slot; 18. Sealing pad; 19. Sealing slot; 20. Liquid discharge tube; 21. Support leg. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a device for measuring the height of liquid nitrogen in a liquid nitrogen tank, comprising a liquid nitrogen tank body 1 and an upper cover 2, the upper cover 2 is arranged on the top of the liquid nitrogen tank body 1, a first L-shaped plate 3 is fixedly connected to one side of the top of the upper cover 2, a threaded rod 4 is rotatably connected to the top of the upper cover 2, the top of the threaded rod 4 extends to the top of the first L-shaped plate 3 and is fixedly connected to an adjustment handle 5, the outer thread of the threaded rod 4 is connected to a support plate 6, the bottom of the support plate 6 is fixedly connected to a connecting rod 7, the bottom of the connecting rod 7 passes through the upper cover 2 and is fixedly connected to a connecting plate 8, and the bottom of the connecting plate 8 is fixedly connected to a contact sensor The core parts of the above device are the liquid nitrogen tank body 1 and the upper cover 2. The upper cover 2 is located at the top of the liquid nitrogen tank body 1. This design cooperates with the first L-shaped plate 3 on one side of the top of the upper cover 2 and the threaded rod 4 rotatably connected to the top. The top of the threaded rod 4 extends and is connected with an adjustment handle 5. The support plate 6 is driven to move vertically through the thread action, so as to adjust the position of the connecting rod 7 and the connecting plate 8. The contact sensor 9 at the bottom of the connecting plate 8 is used to measure the height of liquid nitrogen. By manually adjusting the threaded rod 4, the user can flexibly adjust the position of the contact sensor 9 to meet the measurement needs of liquid nitrogen at different heights, thereby improving the flexibility and accuracy of the measurement.

[0033] Among them, the outside of the liquid nitrogen tank body 1 is fixedly connected with a first fixing plate 10, the outside of the first fixing plate 10 is fixedly connected with a second L-shaped plate 12, the top of the first fixing plate 10 is rotatably connected with a screw rod 13, the top of the screw rod 13 is rotatably connected to the bottom of the second L-shaped plate 12, the external thread of the screw rod 13 is connected with a second fixing plate 11, the second fixing plate 11 is fixedly connected to the outside of the upper cover 2, and the top of the second L-shaped plate 12 is fixedly connected with a motor 14, the output shaft of the motor 14 passes through the second L-shaped plate 12 and is fixedly connected to the top of the screw rod 13, the above-mentioned device is connected through the screw rod 13 at the top of the first fixing plate 10, the top of the screw rod 13 is connected to the output shaft of the motor 14, the motor 14 adjusts the position of the second fixing plate 11 by rotating the screw rod 13, thereby realizing a close connection between the upper cover 2 and the liquid nitrogen tank body 1, and the connection mechanism controlled by the motor 14 makes the connection between the upper cover 2 and the liquid nitrogen tank body 1 faster and more stable, ensuring the sealing during the measurement process and reducing the evaporation loss of liquid nitrogen.

[0034] Among them, the top of the first fixed plate 10 and both sides of the screw rod 13 are fixedly connected with the limiting rod 15, the top of the limiting rod 15 is fixedly connected to the bottom of the second L-shaped plate 12, and the second fixed plate 11 is slidably connected to the limiting rod 15. The second fixed plate 11 of the above-mentioned device can limit the lifting and lowering trajectory of the upper cover 2 through the sliding connection with the limiting rod 15.

[0035] Among them, a T-shaped groove 17 is opened on one side of the first L-shaped plate 3, and a T-shaped block 16 is slidably connected inside the T-shaped groove 17. One side of the T-shaped block 16 is fixedly connected to the outer side of the support plate 6. The above device enables the support plate 6 to maintain balance when adjusting the height, ensures the stability and accuracy of the contact sensor 9 when measuring the liquid nitrogen height, and improves the reliability of the measurement result.

[0036] Among them, a sealing gasket 18 is fixedly connected to the bottom of the upper cover 2, and a sealing groove 19 is opened on the top of the liquid nitrogen tank body 1. The sealing gasket 18 and the sealing groove 19 are used in conjunction with each other. The design of the sealing gasket 18 and the sealing groove 19 of the above device effectively prevents liquid nitrogen leakage, ensures the safe storage and use of liquid nitrogen, and at the same time reduces the evaporation of liquid nitrogen and saves resources.

[0037] Among them, a liquid discharge pipe 20 is fixedly connected to the outside of the liquid nitrogen tank body 1, one end of the liquid discharge pipe 20 extends to the inside of the liquid nitrogen tank body 1, and a control switch is arranged on the outside of the liquid discharge pipe 20. The design of the liquid discharge pipe 20 and the control switch of the above device provides a convenient and quick way to discharge liquid nitrogen, so that the user can easily control the release of liquid nitrogen when needed, thereby improving the convenience of use.

[0038] Among them, three supporting legs 21 are fixedly connected to the bottom of the liquid nitrogen tank body 1. The supporting legs 21 of the device improve the stability of the device, protect the bottom from directly contacting the ground, reduce wear and tear, and extend the service life of the equipment.

[0039] Working principle:

[0040] like Figure 1-Figure 6 As shown, when the above-mentioned liquid nitrogen tank body 1 is in use, liquid nitrogen is first added to the inside of the liquid nitrogen tank body 1, and then the motor 14 is started to drive the screw rod 13 to rotate. When the screw rod 13 rotates, the second fixed plate 11 is driven to lift up and down, and the second fixed plate 11 is fixed to the upper cover 2, and the upper cover 2 is connected to the liquid nitrogen tank body 1. Through the cooperation of the sealing gasket 18 and the sealing groove 19, the liquid nitrogen tank body 1 and the upper cover 2 can be well sealed, and then the adjusting handle 5 is manually rotated to drive the threaded rod 4 to rotate. When the threaded rod 4 rotates, the support plate 6 will be driven to lift up and down. At the same time, the contact sensor 9 is driven to descend to the inside of the liquid nitrogen tank body 1 through the connecting rod 7 and the connecting plate 8. The height of the liquid nitrogen in the liquid nitrogen tank body 1 is measured, and the remaining amount of liquid nitrogen can be accurately understood, ensuring that the liquid nitrogen supply is sufficient, avoiding the situation of insufficient liquid nitrogen at a critical moment, and greatly improving the operation quality and use efficiency compared with the traditional device.

[0041] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A device for measuring the liquid nitrogen level in a liquid nitrogen tank, comprising a liquid nitrogen tank body (1) and an upper cover (2), characterized in that: The upper cover (2) is arranged on the top of the liquid nitrogen tank body (1); a first L-shaped plate (3) is fixedly connected to one side of the top of the upper cover (2); a threaded rod (4) is rotatably connected to the top of the upper cover (2); the top of the threaded rod (4) extends to the top of the first L-shaped plate (3) and is fixedly connected to an adjustment handle (5); the outer thread of the threaded rod (4) is connected to a support plate (6); the bottom of the support plate (6) is fixedly connected to a connecting rod (7); the bottom of the connecting rod (7) passes through the upper cover (2) and is fixedly connected to a connecting plate (8); the bottom of the connecting plate (8) is fixedly connected to a contact sensor (9).

2. The device for measuring the height of liquid nitrogen in a liquid nitrogen tank according to claim 1, characterized in that: The outer side of the liquid nitrogen tank body (1) is fixedly connected to a first fixing plate (10), the outer side of the first fixing plate (10) is fixedly connected to a second L-shaped plate (12), the top of the first fixing plate (10) is rotatably connected to a screw rod (13), the top of the screw rod (13) is rotatably connected to the bottom of the second L-shaped plate (12), the outer side of the screw rod (13) is threadedly connected to a second fixing plate (11), the second fixing plate (11) is fixedly connected to the outer side of the upper cover (2), the top of the second L-shaped plate (12) is fixedly connected to a motor (14), the output shaft of the motor (14) passes through the second L-shaped plate (12) and is fixedly connected to the top of the screw rod (13).

3. The device for measuring the height of liquid nitrogen in a liquid nitrogen tank according to claim 2, characterized in that: The top of the first fixed plate (10) and both sides of the screw rod (13) are fixedly connected to the limiting rod (15), the top of the limiting rod (15) is fixedly connected to the bottom of the second L-shaped plate (12), and the second fixed plate (11) is slidably connected to the limiting rod (15).

4. The device for measuring the height of liquid nitrogen in a liquid nitrogen tank according to claim 1, characterized in that: A T-shaped groove (17) is provided on one side of the first L-shaped plate (3), a T-shaped block (16) is slidably connected inside the T-shaped groove (17), and one side of the T-shaped block (16) is fixedly connected to the outer side of the support plate (6).

5. The device for measuring the height of liquid nitrogen in a liquid nitrogen tank according to claim 3, characterized in that: A sealing gasket (18) is fixedly connected to the bottom of the upper cover (2), a sealing groove (19) is provided on the top of the liquid nitrogen tank body (1), and the sealing gasket (18) is used in conjunction with the sealing groove (19).

6. The device for measuring the liquid nitrogen height in a liquid nitrogen tank according to claim 1, characterized in that: A liquid discharge pipe (20) is fixedly connected to the outside of the liquid nitrogen tank body (1), one end of the liquid discharge pipe (20) extends to the inside of the liquid nitrogen tank body (1), and a control switch is arranged outside the liquid discharge pipe (20).

7. The device for measuring the liquid nitrogen height in a liquid nitrogen tank according to claim 1, characterized in that: Three supporting legs (21) are fixedly connected to the bottom of the liquid nitrogen tank body (1).

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