An oxygen-generating cold box structure
By optimizing the structure of the oxygen-generating cold box and adopting a stainless steel inner box and condenser box working in tandem, the problems of insufficient insulation and suboptimal space layout of the cold box were solved, achieving efficient condensation and remote monitoring, and improving the operating efficiency and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CANGZHOU CHINA RAILWAY EQUIP MFG MATERIALS CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-26
AI Technical Summary
The existing oxygen production cold box structure has insufficient insulation, resulting in large loss of cooling capacity, inconvenience in equipment installation and maintenance, and the internal space layout of the cold box is not optimized.
An oxygen-generating cold box structure was designed, which includes components such as an outer shell, an inner box, a condenser, an observation window, and a Bluetooth module. By optimizing the spatial layout, using stainless steel materials and small partitions for heat insulation, adding an observation window for real-time monitoring, utilizing the condenser and the condensing box to work together to improve condensation efficiency, and realizing remote monitoring through the Bluetooth module.
It improves condensation efficiency, reduces energy consumption, enhances equipment monitorability and ease of operation, extends the service life of the inner casing, reduces manual inspection workload, and ensures safe and efficient equipment operation.
Smart Images

Figure CN224285132U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold box devices, and in particular to an oxygen-generating cold box structure. Background Technology
[0002] In the oxygen production industry, the oxygen production cold box plays a key role in the oxygen production system. The performance of the cold box has a significant impact on the oxygen production efficiency, cost and safety. The existing oxygen production cold box structure has many problems, and the cooling efficiency of the cold box is limited by its internal heat conduction.
[0003] Traditional cold box structures have insufficient insulation, resulting in significant loss of cooling capacity and increased oxygen production costs. The internal space layout of the cold box is not optimized, lacking flexibility in accommodating and installing oxygen production-related equipment, making equipment installation, maintenance, and replacement inconvenient.
[0004] Therefore, this utility model provides an oxygen-generating cold box structure to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an oxygen-generating cold box structure. The observation window allows operators to easily monitor the internal conditions of the equipment during operation, such as whether the condensation process is normal or whether there are any abnormalities in the components, without having to open the equipment. This reduces interference with the internal environment of the equipment and helps to detect problems in a timely manner and take appropriate measures.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an oxygen-generating cold box structure, comprising a main structure, the main structure including an outer shell, a top plate snapped around the upper end face of the outer shell, a condensing structure fixedly disposed on one side of the inner wall of the outer shell, the condensing structure including a condenser, an vent valve fixedly disposed on one side of the upper end face of the top plate, a safety valve fixedly disposed at the center of the upper end face of the top plate, upper positioning plates fixedly disposed around the lower end face of the top plate, a connecting post threadedly connected to the upper positioning plate on the other side of the lower end face of the top plate, a mounting seat slidably connected to the outer surface of the connecting post, an observation window fixedly disposed at the center of one side of the outer shell, and a drain valve fixedly disposed at the edge of the front end face of the outer shell;
[0007] Through the above technical solution, the outer shell protects the internal structure, the top plate protects the upper part of the device, the condenser performs condensation, the vent valve is used during oxygen generator maintenance or cold box evacuation to facilitate the discharge of gas from the cold box, the safety valve automatically opens when the internal pressure of the cold box exceeds the set safety value to release pressure and ensure the safety of the cold box, the upper positioning plate is used to position the upper internal parts of the device, the connecting column connects the upper and lower internal parts and provides support, the mounting base is used to install the oxygen generator, the observation window is used to observe the internal condition of the device, and the drain valve is used to drain the liquid that needs to be drained.
[0008] Furthermore, a lower positioning plate is bolted to one edge of the outer surface of the connecting column, and a base plate is fixedly installed on the lower end face of the lower positioning plate;
[0009] With the above technical solution, the lower positioning plate is used to fix the lower part of the device, and the bottom plate is used to fix the bottom position of the device.
[0010] Furthermore, an inner box is fixedly provided at the edge of the upper surface of the base plate. The inner box is made of stainless steel and there is a small partition between the inner box and the outer shell.
[0011] Through the above technical solution, the inner box is used to protect the internal temperature, the stainless steel material is easy to insulate and prevent the temperature from dropping, and the small partition can better insulate the temperature.
[0012] Furthermore, a partition is fixedly installed on one side of the condenser, and a controller is fixedly installed at the center of one side of the partition;
[0013] Through the above technical solution, the partition is used to separate the condenser from other components, and the controller is used to control the start-up and shutdown of the internal structure of the device.
[0014] Furthermore, a Bluetooth module is fixedly installed below the controller on one side of the partition, and a condensation box is fixedly installed at the edge of one side of the partition;
[0015] Through the above technical solution, the Bluetooth module enables the device to connect remotely, and the condenser box is used in conjunction with the condenser.
[0016] Furthermore, a liquid collection tank is fixedly installed below the condenser, and a drain outlet is provided in the liquid collection tank near the drain valve;
[0017] With the above technical solution, the function of the liquid collection tank is to collect liquid, and the function of the drain outlet is to drain the liquid in the liquid collection tank.
[0018] Furthermore, all connections of the main structure are made using connecting bolts;
[0019] Through the above technical solution, the connecting bolt is used for threaded connection to achieve a fixing effect.
[0020] This utility model has the following beneficial effects:
[0021] 1. This utility model proposes an oxygen-generating cold box structure. The condenser and condensing chamber in the condensation structure work together to effectively convert gaseous substances into liquids, improving condensation efficiency and ensuring that the working medium can quickly and fully complete the phase change process to meet the equipment's operational requirements. The controller monitors and controls the condensation structure in real time, adjusting parameters such as temperature and pressure during the condensation process according to actual conditions to further optimize the condensation effect, improve equipment efficiency, and reduce energy consumption. The Bluetooth module enables wireless data transmission. Operators can remotely monitor the equipment's operating status through external devices, including data such as temperature, pressure, and liquid level during the condensation process. This not only improves the monitorability of equipment operation but also facilitates timely problem detection and adjustment by operators, reducing the workload of manual on-site inspections.
[0022] 2. The oxygen-generating cold box structure proposed in this utility model has an inner box made of stainless steel. Stainless steel has good corrosion resistance and can resist the erosion of the working medium or other possible corrosive substances, thus extending the service life of the inner box. The small partition between the inner box and the outer shell has multiple functions, including heat insulation, reducing the impact of the external environment on the internal condensation process, buffering the equipment in case of minor leaks, and preventing direct contact between the inner and outer layers from causing greater damage. The observation window allows operators to observe the internal situation at any time during equipment operation, such as whether the condensation process is normal or whether there are any abnormalities in the components, without having to open the equipment, reducing interference with the internal environment of the equipment, and helping to detect problems in a timely manner and take corresponding measures. Attached Figure Description
[0023] Figure 1 This is the first axonometric drawing of this utility model;
[0024] Figure 2 This is the second axonometric drawing of the present invention;
[0025] Figure 3 This is the third axonometric drawing of this utility model;
[0026] Figure 4 This is a schematic diagram of the first internal structure of the present invention;
[0027] Figure 5 This is a schematic diagram of the second internal structure of the present invention.
[0028] Legend:
[0029] 1. Main structure; 101. Outer shell; 102. Top plate; 103. Bottom plate; 104. Inner chamber; 2. Vent valve; 3. Safety valve; 4. Connecting bolts; 5. Connecting column; 6. Condensation structure; 601. Condenser; 602. Partition plate; 603. Condensation box; 604. Bluetooth module; 605. Controller; 606. Liquid collection tank; 607. Drain outlet; 7. Lower positioning plate; 8. Upper positioning plate; 9. Drain valve; 10. Observation window; 11. Mounting base. Detailed Implementation
[0030] 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.
[0031] Example
[0032] Reference Figure 1-5This utility model provides an embodiment of an oxygen-generating cold box structure, including a main structure 1, which includes an outer shell 101. The outer shell 101 is the external enclosure of the main structure 1, providing a space for other internal components. A top plate 102 is snapped around the upper surface of the outer shell 101. The top plate 102 and the outer shell 101 together form a relatively enclosed space, protecting the internal equipment and structure. A condensing structure 6 is fixedly installed on one side of the inner wall of the outer shell 101. The condensing structure 6 includes a condenser 601, which typically converts gaseous substances into liquid substances. A vent valve 2 is fixedly installed on one side of the upper surface of the top plate 102. The main function of the vent valve 2 is to release the internal gas to the external environment during equipment operation. A safety valve 3 is fixedly installed at the center of the upper surface of the top plate 102. The safety valve 3 is a safety protection device that automatically deactivates when the internal pressure of the equipment exceeds a set safety pressure value. The device is automatically opened to release excess pressure, preventing explosions or other damage due to excessive pressure and ensuring the safety of equipment and personnel. Upper positioning plates 8 are fixedly installed around the lower end face of the top plate 102. These plates determine the installation positions of other components on the upper part of the device and serve a positioning function. A connecting column 5 is threadedly connected to the upper positioning plate 8 on the other side of the lower end face of the top plate 102. The connecting column 5 serves as a connection and support. A mounting seat 11 is slidably connected to the outer surface of the connecting column 5. The mounting seat 11 is used to install the oxygen generator. An observation window 10 is fixedly installed at the center of one side of the outer casing 101. The observation window allows operators to easily observe the internal working conditions during equipment operation without opening the equipment, reducing the possibility of damage to the internal environment and enabling timely detection of potential problems. A drain valve 9 is fixedly installed at the edge of the front end face of the outer casing 101. The drain valve 9 is used to remove liquid or solid impurities from inside the equipment.
[0033] A lower positioning plate 7 is bolted to one edge of the outer surface of the connecting column 5. The lower positioning plate 7 serves to further position and support the structure. A base plate 103 is fixedly installed on the lower end face of the lower positioning plate 7. The base plate 103 is the bottom support part of the entire structure. An inner box 104 is fixedly installed on the upper edge of the base plate 103. The inner box 104 is made of stainless steel and has a small partition between it and the outer shell 101. The inner box 104 is made of stainless steel and is located on the upper edge of the base plate 103. Stainless steel has good corrosion resistance, strength, and cleanability, making it suitable for the inner box 104. A small partition exists between the inner casing 104 and the outer casing 101. This partition may serve multiple functions, such as heat insulation, buffering, or preventing wear caused by direct contact between the inner and outer layers. A partition 602 is fixedly installed on one side of the condenser 601. The partition 602 separates the internal space of the condensing structure 6, separating components with different functions to prevent mutual interference, and also provides installation positions for other components. A controller 605 is fixedly installed at the center of one side of the partition 602. The controller 605 controls and regulates the working state of the condenser 601, adjusting the condensation process according to the equipment's operating requirements to ensure normal operation and achieve the expected condensation effect. A Bluetooth module 604 is fixedly installed below the controller 605 on one side of the partition 602. The Bluetooth module 604 is likely for enabling wireless communication with external devices, facilitating remote monitoring by operators. The equipment's operating status, acquisition of operating data, and remote control are all controlled by the equipment. A condenser 603 is fixedly installed on one edge of the partition 602. The condenser 603 is the main location where the condensation process occurs. It works in conjunction with the condenser 601. After initial cooling in the condenser 601, gaseous substances may enter the condenser 603 to further complete the condensation phase change process. A liquid collection tank 606 is fixedly installed below the condenser 601. The liquid collection tank 606 is used to collect the liquid generated during the condensation process. A drain outlet 607 is opened near the drain valve 9 in the liquid collection tank 606. When the liquid in the liquid collection tank 606 reaches a certain amount, the liquid can be discharged through the drain outlet 607. All connections of the main structure 1 are made by connecting bolts 4. The connecting bolts 4 have the advantages of strong connection, detachability, and easy installation and maintenance. They can ensure the tight connection between various components and make the entire main structure 1 a stable whole.
[0034] Working Principle: When the device starts up, the controller 605 first performs an initialization operation. It detects various sensors within the device to obtain initial status information. The Bluetooth module 604 initializes, preparing to pair and connect with external devices for subsequent transmission of device operation data. The operator opens the vent valve 2 to expel internal air or other unwanted gases, helping to create a suitable working environment for the device's formal operation. The working medium enters the condensation structure 6, where it undergoes initial cooling in the condenser 601. The condenser 601 uses heat exchange to remove heat from the gaseous substance, lowering its temperature. After initial cooling in the condenser 601, the gaseous substance enters the condensation chamber 603 for further cooling, eventually undergoing a phase change to liquid. The coordinated operation of the condensation chamber 603 and the condenser 601 enables more efficient condensation. During the condensation process, the controller 605 monitors parameters such as temperature and pressure in the condensation structure 6 in real time. If the temperature is too high or the pressure is abnormal, the controller 605 will adjust the working state of the condenser 601, such as adjusting the flow rate or temperature of the cooling medium, to ensure that the condensation process proceeds normally. The liquid substance flows into the collection tank 606 under gravity for collection. The Bluetooth module 604 transmits the equipment operation data acquired by the controller 605 to external monitoring equipment. Operators can remotely monitor the equipment's operating status in real time on external devices. The internal positioning structures, such as the upper positioning plate 8 and lower positioning plate 7, ensure the relative position stability of each component during equipment operation. The sliding connection structure between the connecting column 5 and the mounting base 11 may provide some support and positioning during equipment operation, ensuring the normal operation of related components. During equipment operation, the safety valve 3 provides safety protection. If the internal pressure of the equipment exceeds the set pressure value of the safety valve 3, the safety valve 3 will automatically open to release excess pressure, preventing damage or danger to the equipment due to excessive pressure. When the liquid in the collection tank 606 reaches a certain amount, the liquid needs to be drained. At this time, the drain valve 9 can be opened, and the liquid in the collection tank 606 will be discharged from the equipment through the drain port 607. When the equipment needs to be shut down, the controller 605 will gradually stop the operation of each component, first stopping the cooling operation of the condenser 601, and then disabling operations such as Bluetooth connection with external devices. The operator can check the internal condition of the equipment through the observation window 10 to ensure that the equipment is shut down normally and without any abnormalities. If equipment maintenance or repair is required, the top plate 102 can be removed from the outer casing 101 by disassembling the connecting bolts 4 for further inspection and maintenance of the internal components.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An oxygen producing cold box structure comprising a main body structure (1), characterized in that: The main structure (1) includes an outer shell (101), a top plate (102) is snapped around the upper end face of the outer shell (101), a condensing structure (6) is fixedly installed on one side of the inner wall of the outer shell (101), the condensing structure (6) includes a condenser (601), a vent valve (2) is fixedly installed on one side of the upper end face of the top plate (102), a safety valve (3) is fixedly installed at the center of the upper end face of the top plate (102), an upper positioning plate (8) is fixedly installed around the lower end face of the top plate (102), a connecting column (5) is threadedly connected to the upper positioning plate (8) on the other side of the lower end face of the top plate (102), a mounting base (11) is slidably connected to the outer surface of the connecting column (5), an observation window (10) is fixedly installed at the center of one side of the outer shell (101), and a drain valve (9) is fixedly installed at the edge of the front end face of the outer shell (101).
2. The oxygen cold box structure according to claim 1, characterized in that: The lower positioning plate (7) is bolted to one edge of the outer surface of the connecting column (5), and a base plate (103) is fixedly installed on the lower end face of the lower positioning plate (7).
3. The oxygen cold box structure of claim 2, wherein: An inner box (104) is fixedly installed at the edge of the upper surface of the base plate (103). The inner box (104) is made of stainless steel and there is a small partition between the inner box (104) and the outer shell (101).
4. The oxygen cold box structure of claim 1, wherein: A partition (602) is fixedly installed on one side of the condenser (601), and a controller (605) is fixedly installed at the center of one side of the partition (602).
5. The oxygen-generating cold box structure according to claim 4, characterized in that: A Bluetooth module (604) is fixedly installed below the controller (605) on one side of the partition (602), and a condenser box (603) is fixedly installed on one side edge of the partition (602).
6. The oxygen-generating cold box structure according to claim 1, characterized in that: A liquid collection tank (606) is fixedly installed below the condenser (601), and a drain outlet (607) is opened in the liquid collection tank (606) near the drain valve (9).
7. The oxygen-generating cold box structure according to claim 1, characterized in that: All the main structure (1) is connected by connecting bolts (4).