Nitrogen liquefaction storage system for horizontal Stirling cryocooler process
The nitrogen liquefaction and storage system using a horizontal Stirling refrigeration unit solves the problems of inconvenient liquid nitrogen transportation and leakage by liquefying and storing nitrogen using a refrigeration unit, thus achieving efficient and safe liquid nitrogen storage and use.
Patent Information
- Application Number
- CN202520325884.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-27
AI Technical Summary
The transportation and storage of liquid nitrogen in the laboratory is inconvenient, resulting in high transportation costs and the risk of leakage.
The nitrogen liquefaction and storage system, which uses horizontal Stirling refrigeration technology, liquefies and stores nitrogen by adding multiple refrigeration units to the tank. The tank is seamlessly welded to improve its sealing performance, and the connecting pipes are installed quickly using ring buckles and bolts.
This enables the direct use of liquid nitrogen, avoiding increased transportation costs and leakage problems, and improving the safety and convenience of storage.
Smart Images
Figure CN223882643U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to nitrogen liquefied storage field especially relates to a nitrogen liquefied storage system of horizontal Stirling refrigerating machine technology. BACKGROUND
[0002] Liquid nitrogen refers to inert, colorless, odorless, non-corrosive, non-flammable nitrogen in the environment of extremely low temperature and obtained liquid. Liquid nitrogen is inert, colorless, odorless, low viscosity, non-corrosive, non-flammable, extremely low temperature transparent liquid, and a large amount of heat absorption is caused when vaporizing, resulting in frostbite. Nitrogen constitutes most of the atmosphere. At normal pressure, the boiling point of nitrogen is -196.56 DEG C, and 1 cubic meter of liquid nitrogen can expand to 696 cubic meters of pure gaseous nitrogen. If pressurized, liquid nitrogen can be obtained at a higher temperature. If the human body contacts liquid nitrogen without protective measures, the skin may be severely frostbitten. If the nitrogen gas generated by vaporization at normal pressure is excessive, it may cause the oxygen partial pressure in the air to drop, causing oxygen deficiency asphyxia.
[0003] At present, when liquid nitrogen is used in the laboratory, the liquid nitrogen bottle and tank containing liquid nitrogen are usually purchased by purchasing. Each order needs to be transported back and forth, which is inconvenient and increases the transportation cost. In addition, the liquid nitrogen bottle and tank in storage are prone to leakage, causing environmental pollution.
[0004] Therefore, it is necessary to invent a nitrogen liquefied storage system of horizontal Stirling refrigerating machine technology to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a nitrogen liquefied storage system of horizontal Stirling refrigerating machine technology to solve the problems in the background art.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a nitrogen liquefied storage system of horizontal Stirling refrigerating machine technology, comprising a tank body, the left and right sides of the tank body are provided with end covers, the end covers and the tank body are formed by seamless welding, the top of the tank body is provided with three refrigeration pipelines, the top of the tank body is connected with a plurality of fixing frames, the fixing frames are installed with mounting frames, the mounting frames are installed with refrigerators, the refrigerators are provided with three groups, the refrigerators are connected with the refrigeration pipelines through flanges, the top of the tank body is provided with three connecting pipelines, the three connecting pipelines are sequentially distributed on the side walls of the three refrigeration pipelines, the outer sides of the three connecting pipelines are provided with connecting ends, and the outer sides of the connecting pipelines are provided with connecting assemblies.
[0007] Preferably, the side wall of one of the end covers is provided with a vacuumizing port, and the vacuumizing port is sealed by a threaded sealing cover.
[0008] Preferably, the side walls of the two end covers are connected with lifting lugs.
[0009] Preferably, the bottom of the tank body is connected with a support frame.
[0010] Preferably, the connecting assembly further comprises two annular buckles, the two annular buckles are rotatably arranged with each other, a clamping groove corresponding to the connecting pipeline connecting end is formed in each of the two annular buckles, a side wall of one of the annular buckles is connected with a bolt, a side wall of the other annular buckle is provided with a through hole corresponding to the bolt, and an outer wall of the bolt is threadedly connected with a pushing cylinder.
[0011] The technical effects and advantages of the present application are as follows:
[0012] By additionally arranging a plurality of refrigerators on the tank body, the nitrogen separated from air during use can be liquefied by the refrigerators, and the liquefied liquid nitrogen can be stored in the tank body, so that the just liquefied liquid nitrogen can be directly used, the problem of increased transportation cost caused by repeated transportation is avoided, and the tank body is formed by seamless welding, the liquid nitrogen is directly compressed in the tank body, the sealing property of the tank body to the liquid nitrogen is improved, and leakage is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the present application;
[0014] Figure 2 It is a schematic diagram of the front view structure of the present application; Figure 1
[0015] Figure 3 It is a schematic diagram of the rear side structure of the present application; Figure 1
[0016] Figure 4 It is a schematic diagram of the side view structure of the present application; Figure 1
[0017] Figure 5 It is a schematic diagram of the enlarged structure of part A of the present application. Figure 1 In the drawing: 1, tank body; 2, end cover; 3, refrigeration pipeline; 4, fixing frame; 5, mounting frame; 6, refrigerator; 7, connecting pipeline; 8, connecting assembly; 81, annular buckle; 82, bolt; 83, pushing cylinder; 9, vacuumizing port; 10, lifting lug; 11, support frame.
[0018] DETAILED DESCRIPTION
[0019] 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.
[0020] This utility model provides, for example Figures 1-5 The illustrated nitrogen liquefaction and storage system using a horizontal Stirling chiller process includes a tank 1. End caps 2 are provided on both the left and right sides of the tank 1, seamlessly welded to the tank 1. Three refrigeration pipes 3 are installed on the top of the tank 1. Multiple mounting brackets 4 are connected to the top of the tank 1, and mounting frames 5 are installed on the mounting frames 4. A chiller 6 is installed within the mounting frames 5. Three sets of chillers 6 are provided, connected to the refrigeration pipes 3 via flanges. Three connecting pipes 7 are provided on the top of the tank 1, sequentially distributed along the side walls of the three refrigeration pipes 3. The three connecting pipes 7 are respectively connected to the liquid nitrogen outlet pipe, the liquid level gauge, and the vent valve. By connecting the nitrogen inlet pipe to the refrigeration unit 6, the nitrogen can be liquefied using the refrigeration unit 6. The liquefied liquid nitrogen is stored inside the tank 1, and the freshly liquefied liquid nitrogen can be used directly, avoiding the problem of increased transportation costs caused by repeated transportation. Furthermore, since the tank 1 is made of seamless welding, the liquid nitrogen is directly compressed inside the tank 1, which increases the sealing of the tank 1 for liquid nitrogen and prevents leakage. The outside of each of the three connecting pipes 7 is provided with a connecting end, and the outside of the connecting pipes 7 is provided with a connecting component 8.
[0021] One of the end caps 2 has a vacuum port 9 on its side wall, and the vacuum port is sealed by a threaded sealing cap.
[0022] Both end caps 2 are connected to lifting lugs 10 on their side walls, which facilitates the lifting and transportation of the tank body 1.
[0023] The bottom of the tank 1 is connected to a support frame 11, which can conveniently support the tank 1 and prevent the tank 1 from directly contacting the ground.
[0024] The connecting assembly 8 further comprises two annular buckles 81 which are rotatably arranged between each other, and a clamping groove corresponding to the connecting end of the connecting pipeline 7 is formed in each of the annular buckles 81, a side wall of one of the annular buckles 81 is connected with a bolt 82, a through hole corresponding to the bolt 82 is formed in the side wall of the other annular buckle 81, a pushing cylinder 83 is threadedly connected to the outer wall of the bolt 82, the liquid nitrogen outlet pipe, the liquid level meter and the vent valve are attached to the connecting pipeline 7, and the two annular buckles 81 are clamped on the connecting end of the connecting pipeline 7 and the connecting end of the liquid nitrogen outlet pipe, the liquid level meter and the vent valve, the other annular buckle 81 is pushed by rotating the pushing cylinder 83 and by the principle of threaded movement, so that the two annular buckles 81 are close to each other, and the liquid nitrogen outlet pipe, the liquid level meter and the vent valve can be quickly installed and connected.
[0025] Principle of the utility model:
[0026] The nitrogen inlet pipe is connected with the refrigerating machine 6, so that the refrigerating machine 6 can be used to liquefy nitrogen, and the liquefied liquid nitrogen can be stored in the tank body 1, and the just liquefied liquid nitrogen can be directly used, avoiding the problem of increased transportation cost caused by repeated transportation, and because the tank body 1 is formed by seamless welding, the liquid nitrogen is directly compressed in the tank body 1, the sealing property of the tank body 1 to the liquid nitrogen is improved, and leakage is avoided, the liquid nitrogen outlet pipe, the liquid level meter and the vent valve are attached to the connecting pipeline 7, and the two annular buckles 81 are clamped on the connecting end of the connecting pipeline 7 and the connecting end of the liquid nitrogen outlet pipe, the liquid level meter and the vent valve, the other annular buckle 81 is pushed by rotating the pushing cylinder 83 and by the principle of threaded movement, so that the two annular buckles 81 are close to each other, and the liquid nitrogen outlet pipe, the liquid level meter and the vent valve can be quickly installed and connected.
[0027] Finally, it should be pointed out that: the above only for preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A nitrogen liquefaction storage system for a horizontal Stirling cryogenic process comprising a tank, characterised in that: The left and right sides of the tank body are provided with end covers, the end covers and the tank body are connected through seamless welding, the top of the tank body is provided with three refrigeration pipelines, the top of the tank body is connected with multiple fixing frames, the fixing frames are installed with mounting frames, the mounting frames are installed with refrigerators, the refrigerators are provided with three groups, the refrigerators are connected with the refrigeration pipelines through flanges, the top of the tank body is provided with three connecting pipelines, the three connecting pipelines are sequentially distributed on the side walls of the three refrigeration pipelines, the outer sides of the three connecting pipelines are provided with connecting ends, the outer sides of the connecting pipelines are provided with connecting assemblies.
2. A nitrogen liquefaction storage system for a horizontal Stirling cryogenic process according to claim 1, characterized in that: The side wall of one of the end covers is provided with a vacuumizing port, and the vacuumizing port is sealed by a threaded sealing cover.
3. A nitrogen liquefaction storage system for a horizontal Stirling cryocooler process according to claim 1, characterized in that: The side walls of the two end covers are connected with lifting lugs.
4. A nitrogen liquefaction storage system for a horizontal Stirling cryogenic process according to claim 1, characterized in that: The bottom of the tank body is connected with a support frame.
5. A nitrogen liquefaction storage system for a horizontal Stirling cryogenic process according to claim 1, characterized in that: The connecting assembly further comprises two annular buckles, the two annular buckles are rotatably arranged with each other, the two annular buckles are both provided with clamping grooves corresponding to the connecting ends of the connecting pipelines, the side wall of one of the annular buckles is connected with a bolt, the side wall of the other annular buckle is provided with a through hole corresponding to the bolt, and the outer wall of the bolt is threadedly connected with a pushing cylinder.