A filling device for liquid nitrogen production

Abstract

The utility model relates to liquid nitrogen production technical field, and disclose a kind of filling device for liquid nitrogen production, including bottom plate, still include: install in the even filling subassembly of conveying pipe bottom, the even filling subassembly includes intercommunication in the even piece of conveying pipe bottom, and install in the stabilizing piece of even piece inside, by the setting of even piece and stabilizing piece, effectively solved the problem that traditional liquid nitrogen filling device is unevenly distributed, shunt disc in even piece rotates autonomously under liquid nitrogen impact, and liquid nitrogen is evenly dispersed to each part of container, to avoid local supercooling;Stabilizing piece can reduce the influence of vibration generated when shunt disc rotates on filling process by the cooperation of telescopic link and wedge, ensure that filling process is stable, and both cooperate with each other, improve liquid nitrogen covering uniformity, also enhance equipment operation stability, significantly improve filling precision and work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen production technology, specifically to a liquid nitrogen production filling device. Background Technology

[0002] The liquid nitrogen generation and filling device is a specialized piece of equipment that integrates nitrogen preparation, storage, transportation, and filling. It uses air as raw material to generate high-purity liquid nitrogen through technologies such as cryogenic air separation. The nitrogen is maintained at low temperature by a vacuum insulated storage tank, and then safely and accurately transported and filled through components such as a cryogenic pump and filling port. It is widely used in scientific research, medical fields, and other fields. Its integrated control system can monitor parameters such as pressure and liquid level in real time to ensure efficient and safe operation.

[0003] Most existing liquid nitrogen filling devices use a direct injection method, which leads to uneven liquid nitrogen filling. During the filling process, liquid nitrogen is concentrated in localized areas of the container, causing uneven heating and potentially leading to container deformation or rupture. Furthermore, uneven liquid nitrogen distribution may reduce filling accuracy, and excessive liquid nitrogen in some areas can affect subsequent process effects. In addition, uneven liquid nitrogen coverage can reduce filling efficiency, requiring operators to repeatedly adjust the container position or add liquid nitrogen. This not only increases workload but may also cause wear and tear on the device due to frequent operation, shortening its service life. Utility Model Content

[0004] The purpose of this invention is to provide a liquid nitrogen production filling device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a liquid nitrogen production filling device, comprising a base plate, a turntable disposed on the top of the base plate, stabilizing devices mounted on both the left and right sides of the top of the base plate, a height adjustment device installed between the two stabilizing devices, a linkage plate detachably connected to the top of the height adjustment device, a liquid nitrogen tank mounted on the top of the linkage plate, a delivery pipe connected to the outer wall of the liquid nitrogen tank, and a solenoid valve installed in the inner cavity of the delivery pipe, characterized in that it further comprises:

[0006] A uniform dispensing assembly installed at the bottom of the delivery pipe includes a uniform dispensing element connected to the bottom of the delivery pipe and a stabilizing element installed inside the uniform dispensing element.

[0007] Preferably, the homogenizing component includes a guide pipe connected to the bottom of the delivery pipe, a fixing block is fixedly connected inside the guide pipe, a connecting block is fixedly connected to the top of the fixing block, a fixing rod is fixedly connected to the bottom of the connecting block, a flow divider is rotatably connected to the outer wall of the fixing rod, a filling head is fixedly connected to the bottom of the guide pipe, and a flow equalization hole is installed at the output end of the filling head.

[0008] Preferably, the stabilizing component includes a fixing plate fixedly connected to the outer wall of the fixing rod. The two protruding ends of the fixing plate are each horizontally provided with a sliding groove. The two protruding ends of the fixing plate are each vertically slidably connected to a telescopic rod. The interior of each of the two telescopic rods is provided with an inclined groove. A spring is provided at the bottom of the outer wall of each of the two telescopic rods. An anti-detachment block is fixedly connected to the bottom of each of the two telescopic rods. A wedge is slidably connected to the inner wall of the sliding groove. A limit plate is fixedly connected to the outer wall of the fixing rod.

[0009] Preferably, the bottom of the height adjustment device is mounted on the top of the base plate.

[0010] Preferably, the outer wall of the diverter is disposed at the bottom of the threaded groove of the guide tube.

[0011] Preferably, the inclined surfaces of the two inclined grooves are slidably connected to the inclined surfaces at both ends of the wedge block.

[0012] Preferably, the tops of both telescopic rods are connected to the bottom of the diverter plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention effectively solves the problem of uneven distribution in traditional liquid nitrogen filling devices by incorporating a uniform distribution component and a stabilizing component. The distribution plate in the uniform distribution component rotates autonomously under the impact of liquid nitrogen, evenly distributing the liquid nitrogen to all parts of the container and preventing localized overcooling. The stabilizing component, through the combined use of a telescopic rod and wedges, reduces the impact of vibrations generated when the distribution plate rotates on the filling process, ensuring a smooth filling process. The two components work together to improve the uniformity of liquid nitrogen coverage, enhance the stability of equipment operation, and improve filling accuracy and work efficiency. Attached Figure Description

[0015] Figure 1 The front view provided for this utility model;

[0016] Figure 2 A diagram of the uniform injection component provided by this utility model;

[0017] Figure 3 A structural diagram of the uniform component provided by this utility model;

[0018] Figure 4 A structural diagram of the stabilizing component provided by this utility model.

[0019] In the diagram: 1. Base plate; 2. Turntable; 3. Stabilizing device; 4. Height adjustment device; 5. Linkage plate; 6. Liquid nitrogen tank; 7. Delivery pipe; 8. Solenoid valve; 9. Uniform filling assembly; 91. Uniform filling component; 911. Guide pipe; 912. Fixing block; 913. Connecting block; 914. Fixing rod; 915. Diverter plate; 916. Filling head; 917. Flow equalization hole; 92. Stabilizing component; 921. Fixing plate; 922. Slide groove; 923. Telescopic rod; 924. Inclined groove; 925. Spring; 926. Anti-detachment block; 927. Wedge block; 928. Limiting plate. Detailed Implementation

[0020] 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 some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 As shown, a liquid nitrogen production filling device includes a base plate 1, which serves as the basic supporting component of the device, providing a stable installation foundation. A turntable 2 is installed on the top of the base plate 1, providing a stable support platform for the containers to be filled. The turntable 2 achieves continuous flow of containers through rotation, sequentially conveying the containers to the filling station. Stabilizing devices 3 are installed on both the left and right sides of the top of the base plate 1. Each stabilizing device 3 consists of a mounting base and a sliding rod. A height adjustment device 4 is installed between the two stabilizing devices 3. The bottom of the height adjustment device 4 is installed on the top of the base plate 1. The height adjustment device 4 consists of a mounting base and an electric push rod. The bottom of the height adjustment device 4 is installed on the top of the base plate 1, and the height is adjusted... The top of the section device 4 is detachably connected to a linkage plate 5. An external controller controls the height adjustment device 4 to activate an electric push rod. The push rod end can adjust the height of the linkage plate 5 and the top liquid nitrogen tank 6. The liquid nitrogen tank 6 is installed on the top of the linkage plate 5. A delivery pipe 7 is connected to the outer wall of the liquid nitrogen tank 6. A solenoid valve 8 is installed inside the delivery pipe 7. The solenoid valve 8 can precisely control the delivery and shut-off of liquid nitrogen. When liquid nitrogen needs to be added, the external controller opens the solenoid valve 8, allowing the liquid nitrogen in the liquid nitrogen tank 6 to flow smoothly through the delivery pipe 7 to the uniform addition component 9, thus completing the addition operation. When the addition reaches the preset amount or needs to be paused, the solenoid valve 8 quickly closes, cutting off the flow path of the liquid nitrogen. It also includes:

[0022] The uniform filling component 9 is installed at the bottom of the delivery pipe 7. The uniform filling component 9 includes a uniform element 91 connected to the bottom of the delivery pipe 7 and a stabilizing element 92 installed inside the uniform element 91. The uniform filling component 9 enables the liquid nitrogen to achieve uniform and stable output during the filling process, reducing local over- or under-distribution caused by uneven distribution.

[0023] The homogenizing component 91 includes a guide pipe 911 connected to the bottom of the delivery pipe 7. The upper end of the guide pipe 911 has a threaded groove to guide and buffer the flow of liquid nitrogen, preventing turbulent flow caused by disorderly collisions of liquid nitrogen within the guide pipe 911. A fixing block 912 is fixedly connected inside the guide pipe 911. A connecting block 913 is fixedly connected to the top of the fixing block 912. A fixing rod 914 is fixedly connected to the bottom of the connecting block 913. A flow divider 915 is rotatably connected to the outer wall of the fixing rod 914. The outer wall of the flow divider 915 is located at the bottom of the threaded groove of the guide pipe 911. A filling head 916 is fixedly connected to the bottom of the guide pipe 911. A homogenizing device is installed at the output end of the filling head 916. When liquid nitrogen flows from the delivery pipe 7 into the guide pipe 911, it first enters the threaded groove at the upper end of the guide pipe 911. After being buffered by the threaded groove, the liquid nitrogen flows downward and contacts the fixing rod 914, which is fixed inside the guide pipe 911 by the fixing block 912 and the connecting block 913. The blades of the distribution plate 915, which is rotatably connected to its outer wall, rotate under the impact of the liquid nitrogen. The centrifugal force generated by the rotation further disperses the liquid nitrogen evenly. The dispersed liquid nitrogen continues to flow downward along the inner wall of the guide pipe 911 and finally enters the filling head 916 at the bottom. Through the flow equalization hole 917 at the output end of the filling head 916, it is divided into multiple uniform streams, realizing the uniformity and stability of liquid nitrogen filling.

[0024] The stabilizer 92 includes a fixing plate 921 fixedly connected to the outer wall of the fixing rod 914. Each of the two protruding ends of the fixing plate 921 has a horizontally opening groove 922. Each of the two protruding ends of the fixing plate 921 is vertically slidably connected to a telescopic rod 923. The tops of both telescopic rods 923 are connected to the bottom of the diverter plate 915. Each of the two telescopic rods 923 has an inclined groove 924 inside. A spring 925 is provided at the bottom of the outer wall of each of the two telescopic rods 923. The bottom of each of the 23 components is fixedly connected to an anti-detachment block 926. A wedge block 927 is slidably connected to the inner wall of the slide groove 922. The inclined surfaces of the two inclined grooves 924 are slidably connected to the inclined surfaces at both ends of the wedge block 927. A limit plate 928 is fixedly connected to the outer wall of the fixing rod 914. When the diverter plate 915 rotates under the impact of liquid nitrogen, the two telescopic rods 923 connected to its bottom will slide vertically with the movement of the diverter plate 915. At this time, the inclined groove 924 inside the telescopic rod 923 and the slide groove 927 are slidably connected to the anti-detachment block 926. The inclined surfaces at both ends of the wedge 927 in the groove 922 cooperate with each other. During the up-and-down movement of the telescopic rod 923, the wedge 927 slides laterally along the groove 922. By adjusting the movement amplitude of the telescopic rod 923 in this linkage, the shaking of the distribution plate 915 caused by uneven force is effectively reduced, thereby reducing the vibration of the filling head 916 during the filling process. At the same time, the spring 925 at the bottom of the outer wall of the telescopic rod 923 will undergo elastic deformation with the displacement of the telescopic rod 923, using elasticity to buffer the impact force on the distribution plate 915 and further absorb vibration energy. The anti-detachment block 926 can prevent the telescopic rod 923 from detaching from the protruding end of the fixed plate 921, and the limiting plate 928 restricts the sliding range of the wedge 927. Ultimately, it ensures that the distribution plate 915 always rotates smoothly, providing a stable environment for uniform liquid nitrogen filling. It should be noted that the internal structure of the uniform filling component 9 is made of aluminum alloy. The low temperature resistant material can avoid embrittlement caused by direct contact with liquid nitrogen.

[0025] Working principle: When preparing for refilling, the electric push rod of the height adjustment device 4 is activated by the external controller to adjust the height of the linkage plate 5 and the top liquid nitrogen tank 6 to adapt to different working conditions. The stabilizing devices 3 on the left and right sides of the top of the base plate 1 help ensure the overall stability of the device. The container is placed on the turntable 2 at once. When the refilling operation begins, the external controller opens the solenoid valve 8 inside the delivery pipe 7. The liquid nitrogen in the liquid nitrogen tank 6 flows into the uniform refilling component 9 through the delivery pipe 7. The liquid nitrogen first enters the threaded groove at the upper end of the guide pipe 911. After being guided and buffered by the threaded groove and the flow rate is slowed down, it impacts the blades of the distribution plate 915 downwards, causing it to rotate around the fixed rod 914. The centrifugal force is used to further evenly disperse the liquid nitrogen. The dispersed liquid nitrogen flows downwards along the inner wall of the guide pipe 911 and enters the refilling head 916, and finally passes through... The equalizing orifice 917 forms multiple uniform flow streams to complete the filling process. During this process, the distribution plate 915 rotates, causing the telescopic rod 923 to slide vertically. The inclined groove 924 of the telescopic rod 923 cooperates with the wedge 927. The movement amplitude of the telescopic rod 923 is adjusted by the wedge 927 sliding laterally along the slide groove 922, which curbs the violent shaking of the distribution plate 915. The spring 925 buffers the impact force and absorbs the vibration energy. The anti-detachment block 926 and the limiting plate 928 respectively prevent the telescopic rod 923 from detaching and limit the sliding range of the wedge 927, ensuring that the distribution plate 915 rotates smoothly. When the filling reaches the preset amount or needs to be paused, the solenoid valve 8 closes quickly to cut off the liquid nitrogen flow and avoid overfilling or leakage. After completing one filling cycle, the turntable 2 transfers the container to the next stage, and the device enters the next round of operation.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid nitrogen production filling device, comprising a base plate (1), a turntable (2) disposed on the top of the base plate (1), stabilizing devices (3) installed on both the left and right sides of the top of the base plate (1), a height adjusting device (4) installed between the two stabilizing devices (3), a linkage plate (5) detachably connected to the top of the height adjusting device (4), a liquid nitrogen tank (6) installed on the top of the linkage plate (5), a delivery pipe (7) communicating with the outer wall of the liquid nitrogen tank (6), and a solenoid valve (8) installed in the inner cavity of the delivery pipe (7), characterized in that, Also includes: A uniform dispensing assembly (9) is installed at the bottom of the delivery pipe (7). The uniform dispensing assembly (9) includes a uniform dispensing member (91) connected to the bottom of the delivery pipe (7) and a stabilizing member (92) installed inside the uniform dispensing member (91).

2. The liquid nitrogen production filling device according to claim 1, characterized in that: The homogenizing component (91) includes a guide pipe (911) connected to the bottom of the delivery pipe (7). A fixing block (912) is fixedly connected inside the guide pipe (911). A connecting block (913) is fixedly connected to the top of the fixing block (912). A fixing rod (914) is fixedly connected to the bottom of the connecting block (913). A flow divider (915) is rotatably connected to the outer wall of the fixing rod (914). A filling head (916) is fixedly connected to the bottom of the guide pipe (911). A flow equalization hole (917) is installed at the output end of the filling head (916).

3. The liquid nitrogen production filling device according to claim 1, characterized in that: The stabilizer (92) includes a fixing plate (921) fixedly connected to the outer wall of the fixing rod (914). The two protruding ends of the fixing plate (921) are provided with horizontal sliding grooves (922). The two protruding ends of the fixing plate (921) are slidably connected to telescopic rods (923) vertically. The interior of the two telescopic rods (923) is provided with inclined grooves (924). The bottom of the outer wall of the two telescopic rods (923) is provided with springs (925). The bottom of the two telescopic rods (923) is fixedly connected with anti-detachment blocks (926). The inner wall of the sliding groove (922) is slidably connected with wedges (927). The outer wall of the fixing rod (914) is fixedly connected with a limit plate (928).

4. The liquid nitrogen production filling device according to claim 1, characterized in that: The bottom of the height adjustment device (4) is mounted on the top of the base plate (1).

5. A liquid nitrogen production filling device according to claim 2, characterized in that: The outer wall of the diverter plate (915) is located at the bottom of the threaded groove of the guide pipe (911).

6. A liquid nitrogen production filling device according to claim 3, characterized in that: The inclined surfaces of the two inclined grooves (924) are slidably connected to the inclined surfaces at both ends of the wedge (927).

7. A liquid nitrogen production filling device according to claim 3, characterized in that: The tops of both telescopic rods (923) are connected to the bottom of the diverter plate (915).

Images