Gas phase liquid nitrogen tank

Abstract

The embodiment of the utility model discloses a gas-phase liquid nitrogen tank, and relates to but is not limited to a biological sample preservation technology. The gas phase liquid nitrogen tank comprises a tank body provided with a cavity, a neck tube and an injection hole, a rotating assembly comprising a rotating shaft and a storage rack, and a detection mechanism. The detection mechanism comprises a capacitor plate and a rod piece. The capacitor plate is contained in the cavity and electrically connected with the neck tube, the rod piece is contained in the hollow cavity of the rotating shaft and the neck tube and electrically connected with the capacitor plate through the neck tube, and the rod piece is arranged to be capable of transmitting capacitance change signals between the capacitor plate and the rod piece to the outside of the gas phase liquid nitrogen tank. In this way, the detection mechanism and the neck tube can form a capacitive liquid level rod sensor, the neck tube is used as a one-pole design of the capacitive liquid level rod sensor, the requirement for high-precision liquid level monitoring can be met, the original structure and functional integrity of equipment are reserved, maximum reservation and minimum transformation of an existing equipment structure are achieved, and the cost is reduced. The method is economical and efficient.

Description

Technical Field

[0001] This disclosure relates to, but is not limited to, biological sample preservation technology, and in particular to a gas phase liquid nitrogen tank. Background Technology

[0002] In the medical field, a stable supply of liquid nitrogen is an indispensable part of the production process. Liquid nitrogen, with its extremely low temperature characteristics, is widely used in various applications, including biological sample preservation. Therefore, real-time monitoring of liquid nitrogen capacity to ensure a continuous and sufficient supply is crucial. The reduction of liquid nitrogen in a gas-phase liquid nitrogen tank is a gradual and imperceptible process. Even slight oversights can lead to overlooking this subtle change, resulting in supply delays. This can not only affect the normal operation of the production line but also potentially cause irreparable damage to biological samples. While capacitive level gauges, as a common contact measurement method, offer convenience, they often fail to meet high-precision requirements due to environmental sensitivity and accuracy limitations. This is especially true when dealing with the unique medium of liquid nitrogen, whose low-temperature characteristics and volatile nature further exacerbate the measurement challenges. Utility Model Content

[0003] This disclosure provides a gaseous liquid nitrogen tank, comprising:

[0004] The tank body is provided with a cavity, a neck tube communicating with the cavity, and an injection port, wherein the injection port is configured to inject liquid nitrogen;

[0005] A rotating assembly includes a rotating shaft and a shelf. The rotating shaft passes vertically through the cavity, and its two ends are respectively connected to the neck tube and the tank body. The rotating shaft has a hollow cavity and communicates with the neck tube. The shelf is housed in the cavity and is rotatably connected to the tank body and the neck tube via the rotating shaft.

[0006] The detection mechanism includes a capacitor plate and a rod. The capacitor plate is housed in the cavity and electrically connected to the neck tube. The rod is housed in the neck tube and the hollow cavity and electrically connected to the capacitor plate through the neck tube. The rod is configured to transmit the capacitance change signal between the capacitor plate and the rod to the outside of the gas phase liquid nitrogen tank.

[0007] In some embodiments of the gas phase liquid nitrogen tank, the rod includes a body, an elastic component, and a conductive component. The body is provided with a hollow groove extending along the axial direction of the body. The elastic component is disposed on the circumferential outer side of the body. The body is housed within the neck tube and the hollow cavity. The elastic component is elastically clamped between the neck tube and the body, spaced apart from the body, the rotating shaft, and the neck tube. The conductive component is at least partially housed within the hollow groove. The conductive component is electrically connected to the body and sequentially electrically connected to the capacitor plates through the elastic component and the neck tube, and is capable of transmitting the capacitance change signal outside the gas phase liquid nitrogen tank.

[0008] In some embodiments of the gas phase liquid nitrogen tank, the body has a first end and a second end arranged vertically upwards and downwards, the hollow groove can form a slot at the first end, the conductive component is exposed at the slot, the second end is provided with a base, the base is made of non-metallic material, and the second end is connected to the tank body through the base.

[0009] The neck tube is connected to the cavity via the hollow cavity and the base in sequence.

[0010] In some embodiments of the gas phase liquid nitrogen tank, the body includes a first rod segment and a second rod segment connected in sequence, wherein the first rod segment is made of metal and the second rod segment is made of non-metal.

[0011] The base is disposed on the first rod segment, and the elastic component is disposed on the second rod segment;

[0012] The hollow groove penetrates the second rod segment and extends to the first rod segment, and the conductive element is electrically connected to the first rod segment.

[0013] In some embodiments of the gaseous liquid nitrogen tank, the elastic component includes a sleeve portion and a plurality of elastic arms, the sleeve portion being sleeved on the second rod segment and electrically connected to the conductive element;

[0014] The plurality of elastic arms are evenly arranged around the second rod segment in the sleeve portion and elastically abut against the neck tube.

[0015] In some embodiments of the gaseous liquid nitrogen tank, the outer circumferential side of the second rod segment is provided with an annular groove arranged around the axial direction of the second rod segment and a plurality of guide grooves extending along the axial direction of the second rod segment;

[0016] The sleeve portion is annular and is at least partially embedded in the annular groove;

[0017] The plurality of elastic arms are provided in a one-to-one correspondence with the plurality of guide grooves. Each elastic arm includes a connecting part, an arc-shaped part and a guide part connected in sequence. The connecting part is provided on the sleeve part and partially embedded in the guide groove. The arc-shaped part protrudes away from the second rod segment and elastically abuts against the neck tube. The guide part is embedded in the guide groove and can slide relative to the guide groove according to the degree of deformation of the arc-shaped part.

[0018] In some embodiments of the gas phase liquid nitrogen tank, the gas phase liquid nitrogen tank further includes a first temperature sensor, which is housed in the hollow tank and electrically connected to the sleeve portion, and the first temperature sensor is configured to monitor the temperature change of the sleeve portion.

[0019] In some embodiments of the gaseous liquid nitrogen tank, the gaseous liquid nitrogen tank further includes a second temperature sensor, and a mounting groove is provided on the axial outer side of the first rod segment. The second temperature sensor is mounted in the mounting groove and electrically connected to the conductive element.

[0020] In some embodiments of the gaseous liquid nitrogen tank, the rod further includes a cover that covers the slot opening;

[0021] The cover is provided with a first through hole and a second through hole that are mutually isolated. The conductive element passes through the first through hole, and the second through hole is configured to provide space for a tool to enter the hollow groove for temperature measurement.

[0022] In some embodiments of the gaseous liquid nitrogen tank, the first rod segment and the second rod segment partially overlap, and the size of the overlap position can be adjusted in the vertical direction.

[0023] In some embodiments of the gaseous liquid nitrogen tank, the circumferential outer side of the neck tube is wrapped with an insulating element, and the capacitor plates are integrated into the insulating element.

[0024] This disclosure includes a tank with a cavity, a neck tube, and an injection port, a rotating assembly including a rotating shaft and a shelf, and a detection mechanism. The detection mechanism includes a capacitor plate and a rod. The capacitor plate is housed in the cavity and electrically connected to the neck tube. The rod is housed in the hollow cavity of the rotating shaft and the neck tube, and is electrically connected to the capacitor plate through the neck tube. The rod is configured to transmit the capacitance change signal between the capacitor plate and the rod to the outside of the gaseous liquid nitrogen tank. This allows the detection mechanism and the neck tube to form a capacitive liquid level sensor. Utilizing the neck tube as one pole of the capacitive liquid level sensor not only meets the requirements for high-precision liquid level monitoring but also preserves the original structure and functional integrity of the equipment. This achieves maximum preservation and minimal modification of the existing equipment structure, making it both economical and efficient.

[0025] As a cryogenic storage device, the neck of a gaseous liquid nitrogen tank plays a crucial role in supporting and controlling the rotation of the shaft, connecting the internal and external components, and maintaining pressure balance. Capacitive level sensors, with their advantages of high precision, high stability, and non-contact measurement, are widely favored in the field of level monitoring. The two are cleverly combined, with the neck becoming the core component of the capacitive level sensor, achieving capacitance measurement without increasing heat conduction or evaporation.

[0026] This disclosed embodiment not only enables accurate measurement of liquid nitrogen levels but also effectively avoids the additional drilling or modification requirements associated with traditional level gauge installations, reducing maintenance costs and operational complexity. Simultaneously, the high sensitivity and long lifespan of the capacitive level sensor ensure the accuracy of monitoring data and the stability of equipment operation, providing reliable assurance for production.

[0027] Furthermore, the integrated rod, serving as the other pole of the capacitive level sensor, eliminates the drawbacks of traditional level rods, such as separate assembly and complex interfaces. It avoids loosening and wear between components, thus improving the service life and reliability of the capacitive level sensor. The integrated molding process achieves a compact and stable structure. The integrated rod not only facilitates installation, reducing the difficulty and risk of on-site construction, but also greatly simplifies subsequent maintenance and improves work efficiency.

[0028] Other features and advantages of this disclosure will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the disclosure. Other advantages of this disclosure may be realized and obtained by means of the methods described in the description and the accompanying drawings. Attached Figure Description

[0029] The accompanying drawings are used to provide an understanding of the technical solutions of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure.

[0030] Figure 1 This is a schematic diagram of a gaseous liquid nitrogen tank in an embodiment of this disclosure;

[0031] Figure 2 for Figure 1 Sectional view along line AA;

[0032] Figure 3 for Figure 2 Enlarged structural diagram of section B in the middle;

[0033] Figure 4 for Figure 2 Enlarged structural diagram of section C;

[0034] Figure 5 This is a schematic cross-sectional view of the rod in an embodiment of this disclosure;

[0035] Figure 6 This is an exploded view of the rod in an embodiment of this disclosure;

[0036] Figure 7 for Figure 6 Enlarged structural diagram of section D in the middle;

[0037] Figure 8 for Figure 6 Enlarged structural diagram of section E in the middle;

[0038] Figure 9 for Figure 6 Enlarged structural diagram of section F in the middle;

[0039] Figure 10 for Figure 6 Enlarged structural diagram of the middle G section;

[0040] Figure 11 for Figure 6 Enlarged structural diagram of the middle H section;

[0041] Figure 12 This is a schematic diagram showing the connection between the body, conductive components, and control system in an embodiment of this disclosure.

[0042] Explanation of icon numbers:

[0043] 10. Tank body; 11. Inner cylinder; 12. Outer cylinder; 20. Rotating assembly; 21. Rotating shaft; 22. Shelf; 30. Detection mechanism; 31. Rod; 311. Body; 3111. First rod segment; 3112. Second rod segment; 312. Elastic assembly; 3121. Sleeve part; 3122. Elastic arm; 31221. Connecting part; 31222. Arc-shaped part; 31223. Guide part; 313 314. Conductive component; 315. Base; 316. Cover; 40. Neck tube; 41. Insulating component; 50. Control system; 60. First temperature sensor; 70. Second temperature sensor; 100. Cavity; 200. Injection hole; 300. Hollow cavity; 400. Hollow groove; 401. Groove opening; 500. Annular groove; 600. Guide groove; 700. Mounting groove; 800. First through hole; 900. Second through hole. Detailed Implementation

[0044] This disclosure describes several embodiments, but these descriptions are exemplary and not limiting, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0045] This disclosure includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features, and elements disclosed in this disclosure may also be combined with any conventional features or elements to form unique inventive solutions. Any feature or element of any embodiment may also be combined with features or elements from other inventive solutions to form another unique inventive solution. Therefore, it should be understood that any feature shown and / or discussed in this disclosure may be implemented individually or in any suitable combination. Therefore, the embodiments are not limited except by the limitations imposed by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

[0046] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described in this disclosure to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims relating to the method and / or process should not be limited to the steps performed in the order written, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this disclosure.

[0047] In the medical field, a stable supply of liquid nitrogen is an indispensable part of the production process. Liquid nitrogen, with its extremely low temperature characteristics, is widely used in various applications, including biological sample preservation. Therefore, real-time monitoring of liquid nitrogen capacity to ensure a continuous and sufficient supply is crucial. The reduction of liquid nitrogen in a gas-phase liquid nitrogen tank is a gradual and imperceptible process. Even slight oversights can lead to overlooking this subtle change, resulting in supply delays. This can not only affect the normal operation of the production line but also potentially cause irreparable damage to biological samples. While capacitive level gauges, as a common contact measurement method, offer convenience, they often fail to meet high-precision requirements due to environmental sensitivity and accuracy limitations. This is especially true when dealing with the unique medium of liquid nitrogen, whose low-temperature characteristics and volatile nature further exacerbate the measurement challenges.

[0048] Please combine them together Figures 1 to 6 The present invention will now describe a gaseous liquid nitrogen tank according to an embodiment of the present disclosure. The gaseous liquid nitrogen tank includes a tank body 10, a rotating assembly 20, and a detection mechanism 30.

[0049] The tank body 10 is provided with a cavity 100, a neck tube 40 communicating with the cavity 100, and an injection port 200, which is configured for injecting liquid nitrogen. The tank body 10 includes an inner cylinder 11 and an outer cylinder 12. Both the inner cylinder 11 and the outer cylinder 12 have mounting holes at their top center positions. The mounting holes of the outer cylinder 12 and the inner cylinder 11 are fixedly connected to the neck tube 40. A vacuum cavity exists between the inner cylinder 11 and the outer cylinder 12. Reinforcing ribs are also provided between the outer cylinder 12 and the neck tube 40 to improve the load-bearing capacity of the outer cylinder 12.

[0050] The rotating assembly 20 includes a rotating shaft 21 and a shelf 22. The rotating shaft 21 is vertically inserted into the cavity 100, and its two ends are connected to the neck tube 40 and the tank 10, respectively. The rotating shaft 21 has a hollow cavity 300 and communicates with the neck tube 40. The shelf 22 is housed in the cavity 100 and is rotatably connected to the tank 10 and the neck tube 40 via the rotating shaft 21. The rotating shaft 21 can be fixedly connected to the tank 10 and the neck tube 40. In this case, the shelf 22 can be rotatably connected to the rotating shaft 21, allowing the shelf 22 to rotate relative to the tank 10 and the neck tube 40. Alternatively, the rotating shaft 21 can be rotatably connected to the tank 10 and the neck tube 40. In this case, the shelf 22 can be fixedly connected to the rotating shaft 21, allowing the shelf 22 to rotate relative to the tank 10 and the neck tube 40 with the rotating shaft 21. The shelf 22 can hold biological samples and inject liquid nitrogen into the cavity 100 through the injection port 200 to protect the biological samples.

[0051] In this embodiment, the rotating shaft 21 can be rotatably connected to the inner cylinder 11 and the neck tube 40 via bearings. A guide groove is provided at the center of the bottom of the inner cylinder 11, into which the rotating shaft 21 can be inserted and rotatably connected to the inner cylinder 11. The guide groove restricts the swing of the rotating shaft 21 via the inner cylinder 11.

[0052] The detection mechanism 30 includes a capacitor plate and a rod 31. The capacitor plate is housed in the cavity 100 and electrically connected to the neck tube 40. The rod 31 is housed in the neck tube 40 and the hollow cavity 300, and is electrically connected to the capacitor plate through the neck tube 40. The rod 31 is configured to transmit the capacitance change signal between the capacitor plate and the rod 31 to the outside of the gas phase liquid nitrogen tank. When the liquid nitrogen level changes within the cavity 100, the dielectric constant between the capacitor plate and the rod 31 changes accordingly, resulting in a change in capacitance. This change is converted into a capacitance change signal by a circuit and transmitted to the outside of the gas phase liquid nitrogen tank through the rod 31. After the capacitance change signal is received, real-time monitoring of the liquid nitrogen level can be achieved. Figure 12 As shown, the lever 31 can transmit the capacitance change signal to the control system 50 located outside the gas phase liquid nitrogen tank. The control system 50 can collect the capacitance change signal and also supply electrical energy to the two poles of the capacitive liquid level lever sensor.

[0053] The detection mechanism 30 can measure and report the liquid nitrogen level in the chamber 100 in real time. Within the chamber 100, as liquid nitrogen is consumed or replenished, the interface position between liquid nitrogen and vapor changes. This change is precisely captured and converted into a measurable capacitance change signal through a change in capacitance value. The lever 31 acts as a bridge between the capacitor plates and the control system 50, bearing the crucial responsibility of signal transmission. The lever 31 transmits the capacitance change signal to the control system 50, which rapidly analyzes, processes, and makes decisions based on the received capacitance change signal. When the detection mechanism 30 detects an abnormal liquid level, this information is quickly transmitted to the control system 50 via the lever 31. The control system 50 then initiates corresponding measures, such as activating an alarm device or performing other emergency operations, to ensure the safe operation of the liquid nitrogen tank.

[0054] This embodiment includes a tank 10 with a cavity 100, a neck tube 40, and an injection port 200; a rotating assembly 20 including a rotating shaft 21 and a shelf 22; and a detection mechanism 30. The detection mechanism 30 includes a capacitor plate and a rod 31. The capacitor plate is housed in the cavity 100 and electrically connected to the neck tube 40. The rod 31 is housed in the hollow cavity 300 of the rotating shaft 21 and the neck tube 40, and is electrically connected to the capacitor plate through the neck tube 40. The rod 31 is configured to transmit the capacitance change signal between the capacitor plate and the rod 31 to the outside of the gaseous liquid nitrogen tank. This allows the detection mechanism 30 and the neck tube 40 to form a capacitive liquid level sensor. Using the neck tube 40 as one pole of the capacitive liquid level sensor not only meets the requirements for high-precision liquid level monitoring but also preserves the original structure and functional integrity of the equipment, achieving maximum preservation and minimal modification of the existing equipment structure, making it both economical and efficient.

[0055] As a cryogenic storage device, the neck tube 40 of the gaseous liquid nitrogen tank supports and controls the rotation of the shaft 21, undertaking the important task of connecting the internal and external parts and maintaining pressure balance. Meanwhile, capacitive level sensors, with their advantages of high precision, high stability, and non-contact measurement, are widely favored in the field of level monitoring. The two are cleverly combined, with the neck tube 40 becoming the core component of the capacitive level sensor, achieving capacitance measurement without increasing heat conduction or evaporation.

[0056] This disclosed embodiment not only enables accurate measurement of liquid nitrogen levels but also effectively avoids the additional drilling or modification requirements associated with traditional level gauge installations, reducing maintenance costs and operational complexity. Simultaneously, the high sensitivity and long lifespan of the capacitive level sensor ensure the accuracy of monitoring data and the stability of equipment operation, providing reliable assurance for production.

[0057] Furthermore, the integrated rod 31, serving as the other pole of the capacitive level sensor, eliminates the drawbacks of traditional level rods, such as separate assembly and complex interfaces. It avoids loosening and wear between components, thus improving the service life and reliability of the capacitive level sensor. The integrated molding process achieves a compact and stable structure. The integrated rod 31 not only facilitates installation, reducing the difficulty and risk of on-site construction, but also greatly simplifies subsequent maintenance and improves work efficiency.

[0058] In the exemplary embodiments, please refer to Figures 3 to 6 and Figure 9 The rod 31 includes a body 311, an elastic component 312, and a conductive component 313. The body 311 has a hollow groove 400 extending axially along its axis, and the elastic component 312 is disposed on the circumferential outer side of the body 311. The body 311 is housed within the neck tube 40 and the hollow cavity 300. The elastic component 312 is elastically clamped between the neck tube 40 and the body 311, spaced apart from the rotating shaft 21 and the neck tube 40. This arrangement of the elastic component 312 utilizes its elastic deformation capability to fix the body 311 and the neck tube 40, ensuring the positional stability of the rod 31. Furthermore, it allows for detachable connection between the rod 31 and the neck tube 40, facilitating disassembly, assembly, replacement, and maintenance of the rod 31. The conductive component 313 acts as a bridge between the body 311 and the control system 50, bearing the crucial responsibility of signal transmission.

[0059] The conductive element 313 is at least partially housed in the hollow tank 400. The conductive element 313 is electrically connected to the body 311 and sequentially connected to the capacitor plates via the elastic component 312 and the neck tube 40, enabling the transmission of capacitance change signals outside the gaseous liquid nitrogen tank. This allows the elastic component 312 to not only connect the rod 31 to the neck tube 40 but also to conduct electricity, leading out one electrode of the capacitive liquid level sensor. The elastic deformation capability of the elastic component 312 ensures both mechanical connection stability and electrical connection stability, simplifying the circuit layout and ensuring stable operation of the capacitive liquid level sensor.

[0060] In the exemplary embodiments, please refer to Figure 6 , Figure 7 and Figure 11 The main body 311 has a first end and a second end arranged vertically. A hollow groove 400 forms a slot 401 at the first end, through which a conductive component 313 is exposed for easy lead-out. A base 314, made of non-metallic material, is provided at the second end. The second end is connected to the tank 10 via the base 314, effectively isolating the rod 31 from the tank 10. This ensures measurement accuracy and stabilizes the rod 31, enhancing its stability and avoiding potential thermal conductivity issues associated with metallic materials, thus further guaranteeing the storage efficiency of liquid nitrogen.

[0061] The neck tube 40 is connected to the cavity 100 via the hollow cavity 300 and the base 314. Liquid nitrogen may enter the hollow cavity 300 through the hole in the base 314 and come into contact with the rod 31.

[0062] In the exemplary embodiments, please refer to Figure 5 and Figure 6 The main body 311 includes a first rod segment 3111 and a second rod segment 3112 connected in sequence. The first rod segment 3111 is made of metal. The first rod segment 3111 and the neck tube 40 can serve as the two poles of a capacitive liquid level rod sensor. The second rod segment 3112 is made of non-metallic material. The base 314 is disposed on the first rod segment 3111.

[0063] An elastic component 312 is disposed on the second rod segment 3112, enabling the first rod segment 3111 and the capacitor plate to form the two poles of a capacitive liquid level rod sensor. A hollow groove 400 penetrates the second rod segment 3112 and extends to the first rod segment 3111, with a conductive element 313 electrically connected to the first rod segment 3111. Furthermore, the use of rod segments of different materials in the body 311 allows for reduced heat loss in the upper part of the body 311 (made of non-metallic materials, such as plastic), while ensuring the overall rigidity of the body 311 in the lower part (made of metallic materials, such as stainless steel). This combined upper and lower material design ensures the robustness and durability of the body 311 while effectively reducing the evaporation rate of liquid nitrogen and minimizing unnecessary waste.

[0064] In an exemplary embodiment, such as Figure 9 As shown, the elastic component 312 includes a sleeve portion 3121 and a plurality of elastic arms 3122. The sleeve portion 3121 is sleeved on the second rod segment 3112 and electrically connected to the conductive member 313. In this way, the sleeve portion 3121 increases the connection surface area between the elastic component 312 and the second rod segment 3112, thereby improving the connection stability.

[0065] Multiple elastic arms 3122 are evenly arranged around the second rod segment 3112 along the axial direction of the sleeve portion 3121 and elastically abut against the neck tube 40. This makes the force of the second rod segment 3112 more evenly distributed by the multiple elastic arms 3122, thereby ensuring the positional stability of the rod 31.

[0066] In the exemplary embodiments, please refer to Figure 8 and Figure 9 The second rod segment 3112 is provided with an annular groove 500 surrounding the second rod segment 3112 and a plurality of guide grooves 600 extending along the axial direction of the second rod segment 3112 on its outer circumferential side.

[0067] The sleeve portion 3121 is annular and is at least partially embedded in the annular groove 500. This can further improve the connection stability between the sleeve portion 3121 and the second rod segment 3112, and prevent the sleeve portion 3121 from moving along the axial direction of the second rod segment 3112, which would cause the connection between the rod 31 and the neck tube 40 to be unstable.

[0068] Multiple elastic arms 3122 are correspondingly arranged with multiple guide grooves 600. Each elastic arm 3122 includes a connecting portion 31221, an arc-shaped portion 31222, and a guide portion 31223 connected in sequence. The connecting portion 31221 is disposed on the sleeve portion 3121 and partially embedded in the guide groove 600 to ensure the positional accuracy of the connecting portion 31221 relative to the second rod segment 3112, and to cooperate with the second rod segment 3112 to restrict the sleeve portion 3121 from rotating along the axial direction of the second rod segment 3112.

[0069] The arc-shaped portion 31222 protrudes away from the second rod segment 3112 and elastically abuts against the neck tube 40. The arc-shaped portion 31222 ensures the elastic deformation performance of the elastic arm 3122, thereby ensuring that the elastic arm 3122 can generate a large elastic force and ensuring the connection stability between the rod 31 and the neck tube 40.

[0070] The guide portion 31223 is embedded in the guide groove 600 and can slide relative to the guide groove 600 according to the degree of deformation of the arc-shaped portion 31222. In this way, the setting of the guide portion 31223 can ensure the positional stability and deformation stability of the elastic arm 3122, and prevent the elastic arm 3122 from rotating relative to the sleeve portion 3121 during elastic deformation, which would cause the connection between the rod 31 and the neck tube 40 to be unstable.

[0071] In the exemplary embodiments, please refer to Figure 5 , Figure 6 , Figure 9 and Figure 10 The gas phase liquid nitrogen tank also includes a first temperature sensor 60, which is housed in a hollow tank 400 and electrically connected to a sleeve 3121. The first temperature sensor 60 is configured to monitor the temperature change of the sleeve 3121.

[0072] The gas phase liquid nitrogen tank also includes a second temperature sensor 70. A mounting groove 700 is provided on the outer side of the first rod segment 3111. The second temperature sensor 70 is mounted in the mounting groove 700 and is electrically connected to the conductive component 313.

[0073] The arrangement of the first temperature sensor 60 and the second temperature sensor 70 further enhances the monitoring accuracy. The first temperature sensor 60 and the second temperature sensor 70 are located at the top and bottom of the shelf 22, respectively. This layout fully considers the differences in type and height of different gaseous liquid nitrogen tanks, making temperature measurement more accurate and allowing for flexible adjustment according to different situations. At the same time, this also ensures that gaseous liquid nitrogen tanks of the same type maintain a consistent measurement position when monitoring temperature, enhancing the comparability and reliability of the data.

[0074] In an exemplary embodiment, such as Figure 7 As shown, the rod 31 also includes a cover 315. The cover 315 covers the slot 401. The cover 315 is provided with a first through hole 800 and a second through hole 900 that are mutually isolated. The conductive element 313 passes through the first through hole 800, so that the conductive element 313 can be limited by the cover 315, ensuring the stability of the conductive element 313's connection with the outside world. The second through hole 900 is configured to provide space for tools to enter the hollow slot 400 for temperature measurement, so that users or third parties can perform temperature calibration and measurement, further improving the ease of use of the product.

[0075] In this embodiment, the conductive component 313 can be a cable, which may have multiple conductors that are electrically connected to the capacitor plate, the first rod segment 3111, the first temperature sensor 60, and the second temperature sensor 70, respectively, and can provide electrical energy and transmit electrical signals. The cable can be a coaxial cable, which not only has excellent low-temperature resistance but also effectively resists electromagnetic interference to ensure the accuracy and stability of the signal during transmission.

[0076] In an exemplary embodiment, such as Figure 9 As shown, the first rod segment 3111 and the second rod segment 3112 partially overlap, and the dimensions of the overlapping position can be adjusted vertically to achieve flexible adaptation to gaseous liquid nitrogen tanks of different heights. Regardless of the height of the gaseous liquid nitrogen tank, the rod 31 can be perfectly adapted through simple adjustments, eliminating the need for re-preparation of materials and greatly improving the versatility and practicality of the rod 31. In this embodiment, the overlapping position of the first rod segment 3111 and the second rod segment 3112 is connected by a thread, which not only enhances the stability of the connection between the first rod segment 3111 and the second rod segment 3112 but also gives the rod 31 a certain degree of height adjustment capability.

[0077] In an exemplary embodiment, an insulating member 41 is wrapped around the circumferential outer side of the neck tube 40 to provide thermal insulation and prevent heat from being transferred outward through the neck tube 40, especially if the neck tube 40 is made of metal (high thermal conductivity). The capacitor plates are integrated into the insulating member 41. The insulating member 41 can be made of glass fiber. The capacitor plates can be interference-fitted with the insulating member 41.

[0078] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0079] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of those features.

[0080] In the description of this disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0081] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0082] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A gaseous liquid nitrogen container, characterized in that, include: The tank body is provided with a cavity, a neck tube communicating with the cavity, and an injection port, wherein the injection port is configured to inject liquid nitrogen; A rotating assembly includes a rotating shaft and a shelf. The rotating shaft passes vertically through the cavity, and its two ends are respectively connected to the neck tube and the tank. The rotating shaft has a hollow cavity and communicates with the neck tube. The shelf is housed in the cavity and is rotatably connected to the tank and the neck tube through the rotating shaft. and The detection mechanism includes a capacitor plate and a rod. The capacitor plate is housed in the cavity and electrically connected to the neck tube. The rod is housed in the neck tube and the hollow cavity and electrically connected to the capacitor plate through the neck tube. The rod is configured to transmit the capacitance change signal between the capacitor plate and the rod to the outside of the gas phase liquid nitrogen tank.

2. The gas phase liquid nitrogen tank according to claim 1, characterized in that, The rod includes a body, an elastic component, and a conductive component. The body has a hollow groove extending along its axial direction. The elastic component is disposed on the circumferential outer side of the body. The body is housed within the neck tube and the hollow cavity. The elastic component is elastically clamped between the neck tube and the body, spacing the body from the rotating shaft and the neck tube. The conductive component is at least partially housed within the hollow groove. The conductive component is electrically connected to the body and sequentially electrically connected to the capacitor plates through the elastic component and the neck tube, enabling the transmission of the capacitance change signal outside the gas phase liquid nitrogen tank.

3. The gaseous liquid nitrogen tank according to claim 2, characterized in that, The body has a first end and a second end arranged vertically. The hollow groove can form a slot at the first end, and the conductive component is exposed at the slot. The second end is provided with a base, which is made of non-metallic material. The second end is connected to the tank through the base. The neck tube is connected to the cavity via the hollow cavity and the base in sequence.

4. The gaseous liquid nitrogen tank according to claim 3, characterized in that, The main body includes a first rod segment and a second rod segment connected in sequence. The first rod segment is made of metal, and the second rod segment is made of non-metal. The base is disposed on the first rod segment, and the elastic component is disposed on the second rod segment; The hollow groove penetrates the second rod segment and extends to the first rod segment, and the conductive element is electrically connected to the first rod segment.

5. The gaseous liquid nitrogen tank according to claim 4, characterized in that, The elastic component includes a sleeve portion and a plurality of elastic arms, wherein the sleeve portion is sleeved on the second rod segment and electrically connected to the conductive element; The plurality of elastic arms are evenly arranged around the second rod segment in the sleeve portion and elastically abut against the neck tube.

6. The gaseous liquid nitrogen tank according to claim 5, characterized in that, The second rod segment is provided with an annular groove surrounding the axial direction of the second rod segment and a plurality of guide grooves extending along the axial direction of the second rod segment on its outer circumferential side. The sleeve portion is annular and is at least partially embedded in the annular groove; The plurality of elastic arms are provided in a one-to-one correspondence with the plurality of guide grooves. Each elastic arm includes a connecting part, an arc-shaped part and a guide part connected in sequence. The connecting part is provided on the sleeve part and partially embedded in the guide groove. The arc-shaped part protrudes away from the second rod segment and elastically abuts against the neck tube. The guide part is embedded in the guide groove and can slide relative to the guide groove according to the degree of deformation of the arc-shaped part.

7. The gaseous liquid nitrogen tank according to claim 6, characterized in that, The gaseous liquid nitrogen tank also includes a first temperature sensor, which is housed in the hollow tank and electrically connected to the sleeve. The first temperature sensor is configured to monitor the temperature change of the sleeve.

8. The gaseous liquid nitrogen tank according to claim 6 or 7, characterized in that, The gaseous liquid nitrogen tank also includes a second temperature sensor. A mounting groove is provided on the outer side of the first rod segment, and the second temperature sensor is installed in the mounting groove and electrically connected to the conductive component.

9. The gaseous liquid nitrogen tank according to claim 8, characterized in that, The rod also includes a cover, which is disposed over the slot. The cover is provided with a first through hole and a second through hole that are mutually isolated. The conductive element passes through the first through hole, and the second through hole is configured to provide space for a tool to enter the hollow groove for temperature measurement.

10. The gaseous liquid nitrogen tank according to claim 4, characterized in that, The first and second segments partially overlap, and the size of the overlap position can be adjusted vertically.

11. The gaseous liquid nitrogen tank according to claim 1, characterized in that, The neck tube is wrapped with an insulating component on its circumferential outer side, and the capacitor plates are integrated into the insulating component.

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