Anti-freezing and blocking structure of purified argon cold box

Abstract

The utility model relates to the technical field of argon purification cold box freeze -out, and disclose a kind of freeze -out prevention structure of argon purification cold box, including the sensor module cooperation of cold box body top, on -line moisture analysis table and differential pressure gauge, can real -time monitoring internal moisture content and pressure difference, provide basis for freeze -out prevention measure, the pipe body of the side of cold box has multiple design: wall installs chamber's heating wire and heating gas pipeline cooperation, can be frozen when together dredging, guarantee circulation;Pipe body inner guide groove and molecular sieve guide seat sliding connection, for its movement guide;Motor drives rotary disc rotation, boss drives molecular sieve vibration, elastic support platform auxiliary vibration, and the structure of rotating roller, coil spring and movement plate, utilize coil spring elastic force to enhance vibration effect. This vibration can avoid molecular sieve filling when " segregation ", improve adsorption efficiency, by observing moisture table can judge molecular sieve adsorption saturation degree and switch in time, ensure that production is not interrupted.

Description

Technical Field

[0001] This utility model relates to the field of freezing blockage technology for cold boxes for argon purification, and in particular to an anti-freezing blockage structure for cold boxes for argon purification. Background Technology

[0002] In the crude argon purification process, the cold box, as the core equipment, is responsible for the cryogenic liquefaction and separation of refined argon. Its stable operation directly affects the efficiency and continuity of crude argon purification. Currently, crude argon purification is mainly achieved using argon purification deoxygenation skids. These skids react hydrogen with oxygen in the crude argon to generate water, thereby removing oxygen and purifying the argon. However, in actual operation, the argon purification deoxygenation skids have a significant defect: they cannot completely remove the generated water during the regeneration stage, resulting in a certain amount of moisture remaining in the refined argon. When refined argon enters the cold box for cryogenic liquefaction, the residual moisture will quickly freeze due to the extremely low temperature inside the cold box. These ice crystals will adhere to the heat exchanger channels of the cold box. As the operating time goes by, the ice layer gradually thickens, eventually causing the heat exchanger to freeze and blockage. This seriously hinders the normal operation of the cold box, making it impossible for the ordinary argon purification unit to produce continuously. This not only reduces production efficiency but also increases equipment maintenance costs. Utility Model Content

[0003] The technical problem to be solved by this invention is that the heat exchanger in the cold box in the prior art is prone to freezing and blockage. To address this, we propose an anti-freezing and blockage structure for a cold box for argon purification.

[0004] To achieve the above objectives, this application adopts the following technical solution: an anti-freezing and anti-blocking structure for a cold box for argon purification, comprising a cold box body, a sensor module installed on the top of the cold box body, a tube fixedly connected to one side of the cold box body, an installation chamber opened inside the tube wall, an electric heating wire installed in the installation chamber, an anti-freezing component built into the tube, the anti-freezing component comprising a molecular sieve, a rotating disk arranged on one side of the molecular sieve, multiple protrusions fixedly connected around the rotating disk, a motor arranged on one side of the rotating disk, and multiple elastic support platforms arranged on the side of the molecular sieve away from the rotating disk.

[0005] Preferably, the inner wall of the tube is provided with a plurality of evenly distributed guide grooves, and a plurality of guide seats are fixedly connected around the molecular sieve, the guide seats being slidably connected to the walls of the guide grooves.

[0006] Preferably, the protrusion is slidably connected to the molecular sieve.

[0007] Preferably, the output end of the motor is fixedly connected to the rotating disk.

[0008] Preferably, a fixing plate is sleeved and fixed on the surface of the motor, and the end of the fixing plate away from the motor is fixedly connected to the inner wall of the tube.

[0009] Preferably, the inner wall of the tube is provided with a plurality of mounting grooves, and a rotating roller is built into the mounting groove, with both ends of the rotating roller rotatably connected to the inner wall of the mounting groove.

[0010] Preferably, coil springs are sleeved at both ends of the rotating roller, one end of the coil spring is fixedly connected to the rotating roller, and the other end of the coil spring is fixedly connected to the wall of the mounting groove.

[0011] Preferably, a moving plate is sleeved and fixed on the surface of the rotating roller, and the end of the moving plate away from the rotating roller is fixedly connected to the support platform.

[0012] The technical effects and advantages of this utility model are as follows: This utility model introduces an anti-freezing and anti-blocking structure for the argon purification cold box, which effectively ensures the operation of the cold box. The sensor module on the top of the cold box, in conjunction with an online moisture analyzer and differential pressure gauge, can monitor the internal moisture content and pressure difference in real time, promptly detect anomalies, and provide a basis for anti-freezing and anti-blocking measures. The tube body on one side of the cold box features multiple design elements: heating wires installed in the wall chamber work in conjunction with the heating gas pipeline to clear blockages and ensure smooth flow in case of freezing; the built-in anti-freeze components utilize molecular sieves, which are crucial for reducing moisture at the deoxygenation skid outlet. A guide groove inside the tube slides into the molecular sieve guide seat, guiding its movement; a motor drives a rotating disk, a convex seat causes the molecular sieve to vibrate, and an elastic support platform assists in the vibration. Furthermore, the structure consisting of rotating rollers, coil springs, and a moving plate utilizes the elastic force of the coil springs to enhance the vibration effect. This vibration prevents "segregation" during molecular sieve filling, reduces voids, prevents gas "deviation," and improves adsorption efficiency. By observing the moisture meter, the saturation level of molecular sieve adsorption can be determined and timely switching can be made to ensure uninterrupted production; it can avoid increased compressor load caused by slight freezing blockage in the cold box, thus achieving energy saving; it can also prevent safety accidents such as pipe bursting caused by freezing blockage in the heat exchanger, extending equipment life. It has great application value and market prospects. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a schematic diagram of the antifreeze component structure of this utility model; Figure 4For the present utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the molecular sieve and electric motor assembly structure of this utility model.

[0014] Legend: 1. Cold box body; 2. Sensor module; 3. Tube body; 301. Mounting chamber; 302. Heating wire; 4. Antifreeze component; 401. Molecular sieve; 402. Guide groove; 403. Guide seat; 404. Rotating disk; 405. Boss; 406. Motor; 407. Fixing plate; 408. Mounting groove; 409. Rotating roller; 410. Coil spring; 411. Moving plate; 412. Support platform. Detailed Implementation

[0015] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0016] Reference Figures 1 to 5 As shown, this utility model provides a technical solution: an anti-freezing and anti-blocking structure for a cold box for argon purification, including a cold box body 1, with a sensor module 2 installed on the top of the cold box body 1. In conjunction with an online moisture analyzer and a cold box differential pressure gauge, it can monitor the moisture content and differential pressure inside the cold box in real time, promptly detect any abnormal states that may occur in the cold box, and provide accurate basis for the implementation of subsequent anti-freezing and anti-blocking measures.

[0017] A pipe body 3 is fixedly connected to one side of the cold box body 1. An installation chamber 301 is opened inside the wall of the pipe body 3. An electric heating wire 302 is installed in the installation chamber 301. The electric heating wire 302 installed in the chamber works in conjunction with the added heating gas pipeline. When the cold box freezes and becomes blocked, the electric heating wire 302 can generate heat, and the heating gas pipeline delivers heating gas. Together they act on the frozen and blocked part to effectively clear the blockage after the cold box freezes and ensure smooth flow inside the pipe body 3.

[0018] The tube body 3 has an internal antifreeze component 4, which includes a molecular sieve 401. The inner wall of the tube body 3 has multiple evenly distributed guide grooves 402. Multiple guide seats 403 are fixedly connected around the molecular sieve 401. The guide seats 403 are slidably connected to the walls of the guide grooves 402. A rotating disk 404 is provided on one side of the molecular sieve 401. Multiple protrusions 405 are fixedly connected around the rotating disk 404. The protrusions 405 are slidably connected to the molecular sieve 401. A motor 406 is provided on one side of the rotating disk 404. The output end of the motor 406 is fixedly connected to the rotating disk 404. A fixing plate 407 is sleeved and fixed on the surface of the motor 406. The end of the fixing plate 407 away from the motor 406 is fixedly connected to the inner wall of the tube body 3. Multiple elastic support platforms 412 are provided on the side of the molecular sieve 401 away from the rotating disk 404. The molecular sieve 401 plays a key role in reducing the moisture at the outlet of the deoxygenation skid.

[0019] Multiple guide grooves 402 on the inner wall of the tube 3 are slidably connected to guide seats 403 around the molecular sieve 401, providing stable guidance for the movement of the molecular sieve 401. A rotating disk 404 on one side of the molecular sieve 401 rotates under the drive of a motor 406. Protrusions 405 around the rotating disk 404 slide in contact with the molecular sieve 401, thereby causing the molecular sieve 401 to vibrate. The motor 406 is securely mounted on the inner wall of the tube 3 via a fixing plate 407, ensuring stable power output. Multiple elastic support platforms 412 are provided on the side of the molecular sieve 401 away from the rotating disk 404, further coordinating with the vibration of the molecular sieve 401.

[0020] Multiple mounting grooves 408 are provided on the inner wall of the tube body 3. A rotating roller 409 is installed in the mounting groove 408. Both ends of the rotating roller 409 are rotatably connected to the inner wall of the mounting groove 408. A coil spring 410 is sleeved on both ends of the rotating roller 409. One end of the coil spring 410 is fixedly connected to the rotating roller 409, and the other end of the coil spring 410 is fixedly connected to the groove wall of the mounting groove 408. A moving plate 411 is sleeved and fixed on the surface of the rotating roller 409. One end of the moving plate 411 away from the rotating roller 409 is fixedly connected to the support platform 412. One end of the coil spring 410 is fixed to the rotating roller 409, and the other end is fixed to the groove wall of the mounting groove 408, providing a restoring force for the rotating roller 409. The moving plate 411 fixed on the surface of the rotating roller 409 is connected to the support platform 412. When the molecular sieve 401 vibrates, the support platform 412 drives the moving plate 411 to rotate the rotating roller 409, and the coil spring 410 deforms accordingly. The elastic force of the coil spring 410 helps the support platform 412 and the molecular sieve 401 to achieve a better vibration effect.

[0021] This vibration effect is crucial for the filling of molecular sieve 401. If the particles simply accumulate naturally during filling, the inconsistent speed and direction of particle fall can easily lead to segregation, resulting in excessively large local voids or over-compaction within the bed. Vibration, however, allows the molecular sieve 401 particles to rearrange under the combined action of gravity and vibration, reducing irregular voids and making the bed filling more uniform and with a more consistent density. This effectively prevents "flow deviation" when gas flows through, meaning the gas does not preferentially flow through areas with large voids, preventing some molecular sieve 401 from being underutilized and causing a decrease in adsorption efficiency. It ensures sufficient contact between the gas and the molecular sieve 401, improving the overall adsorption effect. This structure enables uninterrupted production. By observing the moisture meter, the adsorption saturation level of molecular sieve 401 can be determined, allowing for timely switching. This allows for intervention before the cold box becomes completely blocked, ensuring continuous production without interruption due to equipment problems. Regarding energy saving, when the cold box experiences slight blockage, resistance increases, leading to increased compressor load and higher power consumption. This anti-blockage structure effectively prevents cold box blockage, thereby reducing compressor load, lowering power consumption, and achieving energy savings.

[0022] From a safety perspective, severe freezing and blockage inside the heat exchanger can lead to pipe rupture and cryogenic liquid leakage. A leaking cryogenic liquid will cause a dramatic increase in vaporization volume, potentially resulting in sandblasting or even an explosion within the cold box. This structure prevents severe freezing and blockage, avoiding such accidents and ensuring production safety. The anti-freezing structure of this argon purification cold box reduces energy consumption, enables long-term stable operation, and extends equipment lifespan, demonstrating significant application value and market potential.

[0023] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A structure for preventing freezing and clogging of a purification cold box for protactinium, characterized by comprising: The device includes a cold box body, a sensor module mounted on the top of the cold box body, a tube fixedly connected to one side of the cold box body, an installation chamber inside the tube wall, a heating wire installed in the installation chamber, an antifreeze component inside the tube, the antifreeze component including a molecular sieve, a rotating disk on one side of the molecular sieve, multiple protrusions fixedly connected around the rotating disk, a motor on one side of the rotating disk, and multiple elastic support platforms on the side of the molecular sieve away from the rotating disk.

2. The anti-fouling structure of the purification cold box according to claim 1, characterized in that: The inner wall of the tube is provided with multiple evenly distributed guide grooves, and multiple guide seats are fixedly connected around the molecular sieve. The guide seats are slidably connected to the walls of the guide grooves.

3. The anti-fouling structure of the purification cold box according to claim 1, characterized in that: The boss is slidably connected to the molecular sieve.

4. The anti-fouling structure of the purification cold box according to claim 1, characterized in that: The output end of the motor is fixedly connected to the rotating disk.

5. The anti-fouling structure of the purification cold box according to claim 4, characterized in that: A fixing plate is fitted and fixed to the surface of the motor, and the end of the fixing plate away from the motor is fixedly connected to the inner wall of the tube.

6. The anti-fouling structure of the purification cold box according to claim 1, characterized in that: The inner wall of the tube is provided with multiple mounting grooves, and a rotating roller is installed in each mounting groove. The two ends of the rotating roller are rotatably connected to the inner wall of the mounting groove.

7. The anti-freezing and anti-blocking structure of the argon purification cold box according to claim 6, characterized in that: The rotating roller is fitted with coil springs at both ends. One end of the coil spring is fixedly connected to the rotating roller, and the other end of the coil spring is fixedly connected to the wall of the mounting groove.

8. The anti-fouling structure of the purification cold box according to claim 7, characterized in that: A moving plate is fixedly fitted onto the surface of the rotating roller, and the end of the moving plate away from the rotating roller is fixedly connected to the support platform.

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