Air separation engineering low-temperature cooling control system based on hydrogen refrigeration

Abstract

The application discloses a kind of low-temperature cooling control systems based on hydrogen refrigeration of air separation engineering, it is related to air separation engineering cooling technical field, including: frame;First hydrogen storage tank is fixed in the one end of frame, the other end is fixed with the symmetry second hydrogen storage tank, and both structures are same;Refrigerating machine is fixed in the top center of frame, is connected with first hydrogen storage tank and second hydrogen storage tank;Cooling device is fixed in the middle of frame, is below refrigerating machine, and is connected with refrigerating machine;Switching control device is fixed in the top of frame, is located in the front side of refrigerating machine, and respectively with first hydrogen storage tank and second hydrogen storage tank is connected.The application can accurately control hydrogen flow, automatically switch cooling circuit, integrate multi-mode cooling function, effectively improve air separation engineering cooling efficiency, reduce energy consumption and guarantee temperature stability.

Description

Technical Field

[0001] This invention relates to the field of air separation engineering cooling technology, and more specifically, to a cryogenic cooling control system for air separation engineering based on hydrogen refrigeration. Background Technology

[0002] In air separation engineering, cryogenic separation technology is the core component for achieving efficient gas separation, and the performance of its cooling system directly affects air separation efficiency and energy consumption. Traditional cryogenic cooling in air separation projects often employs liquid nitrogen or other single-medium refrigeration methods, which suffer from low cooling efficiency, lag in temperature regulation, and insufficient resource utilization. Furthermore, traditional cooling systems typically only support a single cooling mode (such as pure water cooling or pure air cooling), unable to flexibly switch according to actual operating conditions, resulting in limited heat exchange efficiency. This is especially problematic when air separation projects have varying requirements for cooling speed and precision at different operational stages, making it difficult for traditional technologies to balance efficiency and stability. In addition, while existing hydrogen refrigeration technology offers advantages such as environmental friendliness and high energy efficiency, it suffers from low hydrogen flow control precision and inconvenient cooling circuit switching. Lag in flow regulation or untimely circuit switching often leads to unstable cooling effects and even waste of hydrogen resources. Therefore, it is necessary to provide a hydrogen-based cryogenic cooling control system for air separation projects to address the problems mentioned in the background. Summary of the Invention

[0003] To achieve the above objectives, the present invention provides the following technical solution: a cryogenic cooling control system for air separation engineering based on hydrogen refrigeration, comprising:

[0004] Frame;

[0005] The first hydrogen storage tank is fixed at one end of the frame, and the other end is fixed with a second hydrogen storage tank that is symmetrical to it, and the two have the same structure.

[0006] The refrigeration unit is fixed at the top center of the frame and connected to the first hydrogen storage tank and the second hydrogen storage tank.

[0007] The cooling device is fixed in the middle of the frame, located below the refrigeration unit, and connected to the refrigeration unit;

[0008] The switching control device is fixed on the top of the frame, located on the front side of the refrigeration unit, and is connected to the first hydrogen storage tank and the second hydrogen storage tank respectively.

[0009] Furthermore, preferably, the first hydrogen storage tank includes:

[0010] The tank body is fixed to the frame.

[0011] The interface is fixed to the top of the tank.

[0012] A hydrogen compressor is connected to the side of the interface and is equipped with a recovery pipe, which connects to the refrigeration unit and the cooling device.

[0013] The centrifugal distribution assembly is fixed to the top of the interface and connected to the refrigeration unit.

[0014] Furthermore, preferably, the centrifugal dispensing assembly includes:

[0015] The housing is secured to the top of the interface;

[0016] A rotating circular surface is rotatably disposed within a limiting housing, and a toothed ring is provided on the outer side of the rotating circular surface. One side of the toothed ring passes through the limiting housing and is connected to the switching control device.

[0017] The flow channels are square in shape and have multiple circular distributions that run through the rotating circular surface;

[0018] The movable block is positioned within the flow channel, at one end near the center of the rotating circular surface.

[0019] Two blocking blocks are symmetrically distributed vertically, fixedly connected to the movable block, and slidably connected to the rotating circular surface;

[0020] A compression spring connects the inner wall of the flow channel and the moving block, and tough protective surfaces are provided on the upper and lower sides corresponding to the flow channel.

[0021] Furthermore, as a preferred embodiment, the refrigerator is provided with a hydrogen inlet pipe and a cooling outlet pipe. The hydrogen inlet pipe is connected to a first hydrogen storage tank through a first input pipe and to a second hydrogen storage tank through a second input pipe. The cooling outlet pipe is connected to a cooling device.

[0022] Furthermore, as a preferred embodiment, the first input pipe and the second input pipe are provided with limiting rings on the inner wall near the hydrogen inlet pipe, and a sealing circular surface is slidably provided between the limiting rings.

[0023] Furthermore, preferably, the cooling device includes:

[0024] Four lifting columns are arranged in a ring and fixed on the lower plane of the frame, located below the refrigeration unit;

[0025] The cooling water tank is vertically movable between the lifting columns and is connected to water cooling pipes;

[0026] The air-cooled box is slidably installed inside the cooling water tank, with its top fixedly connected to the frame and its bottom connected to the cooling water tank, and is also connected to air-cooling pipes.

[0027] The cooling assembly is fixed inside the air-cooled box by connecting columns, and its two ends are respectively connected to a first cooling pipe and a second cooling pipe. The first cooling pipe and the second cooling pipe are connected to the refrigerator and the corresponding hydrogen storage tank.

[0028] Furthermore, preferably, the cooling assembly includes:

[0029] Two cooling distribution plates are symmetrically distributed and connected to the first cooling pipe and the second cooling pipe respectively;

[0030] The heat exchange channels are arranged in a ring, with multiple channels, each spiral in shape, arranged laterally, and fixed between the cold energy distribution plates;

[0031] The heat exchange fins are fixed to the outer wall of the heat exchange channel.

[0032] Furthermore, preferably, the switching control device includes:

[0033] The forward and reverse drive mechanism is fixed to the top of the frame and located at the front of the refrigeration unit;

[0034] Two drive shafts are symmetrically distributed and connected to both ends of the forward and reverse drive mechanism;

[0035] The gear transmission assembly is configured corresponding to the drive shaft and connected to the corresponding hydrogen storage tank.

[0036] The transmission mechanism is connected to the middle of the forward and reverse drive mechanism, and two symmetrical three-way control components are provided on both sides. The three-way control components are connected to the refrigerator, the cooling device and the corresponding hydrogen storage tank.

[0037] Furthermore, preferably, the three-way control component includes:

[0038] A long gear, connected to the transmission mechanism;

[0039] The transmission gear meshes with the long gear;

[0040] The control tube is fixed at the connection point of the refrigeration unit, cooling device and corresponding hydrogen storage tank;

[0041] A threaded shaft, fixedly connected to the transmission gear and threadedly connected to the control pipe;

[0042] The right-angle switching component is movable within the control tube and rotatably connected to the threaded shaft.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] In this invention, the symmetrical arrangement of two hydrogen storage tanks and the design of two independent cooling lines achieve the effect of adapting to the cooling needs of different stages of the air separation project. In the initial pre-cooling stage, the first hydrogen storage tank is used to quickly output hydrogen to achieve efficient cooling. In the distillation temperature control stage, the second hydrogen storage tank is used to precisely adjust the hydrogen flow rate to stabilize the temperature.

[0045] By adjusting the centrifugal force between the rotating circular surface and the flow channel in the centrifugal distribution component, the hydrogen flow rate can be controlled steplessly and precisely, and the hydrogen delivery volume can be adjusted in real time.

[0046] By linking the forward and reverse drive mechanism and the three-way control component in the switching control device, the cooling line can be automatically switched. The transmission mechanism drives the right-angle switching component to move, quickly connecting or disconnecting the pipelines of the refrigerator, cooling device and hydrogen storage tank, reducing manual intervention and improving switching efficiency.

[0047] The integrated design of the lifting column and water / air cooling modes in the cooling device achieves the effect of adapting to the heat exchange requirements of different working conditions. The lifting column adjusts the position of the cooling water tank, flexibly switching the contact between cooling water or airflow and the cooling components, improving heat exchange efficiency and expanding the scope of application.

[0048] The sealing structure design of the sealing circular surface and the limiting ring in the input pipeline of the refrigeration unit achieves the effect of preventing hydrogen cross-flow, ensuring that the other input pipeline is reliably sealed when a single cooling line is running, and ensuring the stable delivery of hydrogen medium. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the overall structure of a cryogenic cooling control system for air separation engineering based on hydrogen refrigeration.

[0050] Figure 2 A top view of a cryogenic cooling control system for an air separation project based on hydrogen refrigeration;

[0051] Figure 3 A schematic diagram showing the connection between the hydrogen storage tank and the switching device;

[0052] Figure 4 This is a schematic diagram of the centrifugal dispensing component structure;

[0053] Figure 5 This is a schematic diagram of the refrigeration unit structure;

[0054] Figure 6 A schematic diagram of the cooling device and switching control device;

[0055] Figure 7 This is a schematic diagram of the cooling component structure;

[0056] Figure 8 This is a schematic diagram of the three-way control assembly.

[0057] Figure 9 This is a cross-sectional view of the three-way control assembly;

[0058] In the diagram: 1. Frame; 2. First hydrogen storage tank; 3. Second hydrogen storage tank; 4. Refrigeration unit; 5. Cooling device; 6. Switching control device; 21. Tank body; 22. Interface; 23. Hydrogen compressor; 24. Centrifugal distribution assembly; 41. Hydrogen inlet pipe; 42. First input pipe; 43. Second input pipe; 44. Cooling output pipe; 51. Lifting column; 52. Cooling water tank; 53. Air-cooled box; 54. Cooling assembly; 55. Connecting column; 56. First cooling pipe; 57. Second cooling pipe; 61. Forward and reverse rotation. 62. Drive mechanism; 63. Drive shaft; 64. Gear transmission assembly; 65. Transmission mechanism; 66. Three-way control assembly; 241. Restriction housing; 242. Rotating circular surface; 243. Flow channel; 244. Moving block; 245. Blocking block; 246. Compression spring; 421. Limiting ring; 422. Blocking circular surface; 541. Cold capacity distribution plate; 542. Heat exchange channel; 543. Heat exchange fins; 651. Long gear; 652. Transmission gear; 653. Control tube; 654. Threaded shaft; 655. Right-angle switching component. Detailed Implementation

[0059] Please see Figures 1-9 In this embodiment of the invention, a cryogenic cooling control system for air separation engineering based on hydrogen refrigeration includes:

[0060] Frame 1;

[0061] The first hydrogen storage tank 2 is fixed at one end of the frame 1, and the other end is fixed with a second hydrogen storage tank 3 that is symmetrical to it, and the two have the same structure.

[0062] The refrigeration unit 4 is fixed at the top center of the frame 1 and connected to the first hydrogen storage tank 2 and the second hydrogen storage tank 3.

[0063] The cooling device 5 is fixed in the middle of the frame 1, located below the refrigeration unit 4, and connected to the refrigeration unit 4;

[0064] The switching control device 6 is fixed on the top of the frame 1, located in front of the refrigerator 4, and is connected to the first hydrogen storage tank 2 and the second hydrogen storage tank 3 respectively.

[0065] In this embodiment, the first hydrogen storage tank 2 includes:

[0066] Tank 21 is fixed to frame 1;

[0067] Interface 22 is fixed to the top of the tank body 21;

[0068] A hydrogen compressor 23 is connected to the side of the interface 22 and is provided with a recovery pipe, which is connected to the refrigeration unit 4 and the cooling device 5.

[0069] Centrifugal distribution assembly 24 is fixed on top of interface 22 and connected to refrigeration unit 4.

[0070] In other words, this cooling control system has two cooling lines. The first hydrogen storage tank 2 supplies hydrogen to the second hydrogen storage tank 3 for initial pre-cooling, and the second hydrogen storage tank 3 supplies hydrogen to the first hydrogen storage tank 2 for distillation temperature control. Under the action of the centrifugal distribution component 24, the real-time supply of hydrogen in the hydrogen storage tank is controlled. The hydrogen enters the refrigerator 4 to form low-temperature cooled hydrogen, and then passes through the cooling device 5 for heat exchange to cool the air separation process. After heat exchange, the hydrogen is compressed by the hydrogen compressor 23 and then sent to another hydrogen storage tank for recycling.

[0071] In this embodiment, the centrifugal dispensing component 24 includes:

[0072] The housing 241 is fixed to the top of the interface 22;

[0073] The rotating circular surface 242 is rotatably disposed within the limiting housing 241, and a toothed ring is provided on the outer side of the rotating circular surface 242. One side of the toothed ring passes through the limiting housing 241 and is connected to the switching control device 6.

[0074] The flow channel 243 is square in shape and has multiple channels arranged in a ring, which penetrate the rotating circular surface 242.

[0075] The movable block 244 is movably positioned within the flow channel 243, located at one end near the center of the rotating circular surface 242;

[0076] Two blocking blocks 245 are symmetrically distributed vertically, fixedly connected to the movable block 244, and slidably connected to the rotating circular surface 242;

[0077] A compression spring 246 connects the inner wall of the flow channel 243 and the moving block 244, and a tough protective surface is provided on the upper and lower sides of the compression spring 246 corresponding to the flow channel 243.

[0078] In other words, under the action of the switching control device 6 and the restriction of the housing 241, the rotating circular surface 242 is rotated by the toothed ring on the outer side of the rotating circular surface 242. During the rotation, under the action of centrifugal force, the moving block 244 moves away from the center of the rotating circular surface 242 in the flow channel 243 and compresses the compression spring 246. At the same time, it drives the blocking block 245 to slide on the rotating circular surface 242, opening the flow channel 243. As the rotation speed of the rotating circular surface 242 increases, the opening of the flow channel 243 becomes larger, and thus the hydrogen delivery volume increases. Conversely, when the rotation speed of the rotating circular surface 242 decreases, the compression spring 246 rebounds and resets, pushing the moving block 244 and the blocking block 245 to move in the flow channel 243, making the opening of the flow channel 243 smaller, and thus the hydrogen delivery volume decreases. The cooling rate is controlled by controlling the hydrogen flow rate.

[0079] In this embodiment, the refrigerator 4 is provided with a hydrogen inlet pipe 41 and a cooling outlet pipe 44. The hydrogen inlet pipe 41 is connected to the first hydrogen storage tank 2 through a first input pipe 42 and to the second hydrogen storage tank 3 through a second input pipe 43. The cooling outlet pipe 44 is connected to the cooling device 5.

[0080] In this embodiment, the first input pipe 42 and the second input pipe 43 are provided with limiting rings 421 on the inner wall near the hydrogen inlet pipe 41, and the limiting rings 421 are provided with sealing circular surfaces 422.

[0081] In other words, taking the transfer from the first hydrogen storage tank 2 to the second hydrogen storage tank 3 as an example, under the action of the centrifugal distribution component 24, hydrogen is output from the first hydrogen storage tank 2 and flows from the first input pipe 42 to the hydrogen inlet pipe 41. Driven by the hydrogen, the sealing circular surface 422 moves towards the second input pipe 43 until it comes into contact with the inner limiting ring 421 of the second input pipe 43, thus sealing the second input pipe 43 to prevent hydrogen in the first input pipe 42 from entering the second input pipe 43. Then, the hydrogen is cooled in the refrigerator 4 through the hydrogen inlet pipe 41. The cooled hydrogen is output from the cooling output pipe 44 and enters the cooling device 5. After heat exchange, it is recovered to the second hydrogen storage tank 3 through the recovery pipe and the hydrogen compressor 23.

[0082] In this embodiment, the cooling device 5 includes:

[0083] The lifting columns 51 are arranged in a ring, with four columns fixed on the lower plane of the frame 1 and located below the refrigeration unit 4.

[0084] The cooling water tank 52 is vertically movable between the lifting columns 51 and is connected to a water cooling pipe;

[0085] The air-cooled box 53 is slidably disposed inside the cooling water tank 52, with its top fixedly connected to the frame 1 and its bottom connected to the cooling water tank 52, and is also connected to an air-cooling pipe.

[0086] The cooling assembly 54 is fixed inside the air-cooled box 53 by the connecting column 55, and its two ends are respectively connected to the first cooling pipe 56 and the second cooling pipe 57. The first cooling pipe 56 and the second cooling pipe 57 are connected to the refrigerator 4 and the corresponding hydrogen storage tank.

[0087] In other words, under the action of the lifting column 51, the cooling water tank 52 is driven to move up and down inside the air-cooled box 53. When the cooling water tank 52 moves up, the cooling water inside the cooling water tank 52 comes into contact with the cooling component 54. The cooling component 54 exchanges heat with the cooling water to cool it down, and then cools the air separation process through the water-cooling pipe. When the cooling water tank 52 moves down, the cooling water inside the cooling water tank 52 is separated from the cooling component 54. At this time, the air-cooling pipe can drive the gas flow, so that the airflow comes into contact with the cooling component 54 to exchange heat and cool the air separation process.

[0088] In this embodiment, the cooling component 54 includes:

[0089] Two cooling distribution plates 541 are symmetrically distributed and are respectively connected to the first cooling pipe 56 and the second cooling pipe 57;

[0090] Multiple heat exchange channels 542 are arranged in a ring shape, each spiral-shaped and horizontally fixed between the cold energy distribution plates 541;

[0091] The heat exchange fins 543 are fixed on the outer wall of the heat exchange channel 542.

[0092] In other words, taking the transfer of hydrogen from the first hydrogen storage tank 2 to the second hydrogen storage tank 3 as an example, the low-temperature hydrogen gas after passing through the refrigeration unit 4 flows to the first cooling pipe 56, is distributed to each heat exchange channel 542 via the cold energy distribution plate 541, and then exchanges heat with the cooling water in the cooling water tank 52 or the airflow in the air-cooled box 53 through the heat exchange fins 543. In turn, the air separation process is cooled down by water cooling or air cooling. The setting of the heat exchange channel 542 and the heat exchange fins 543 helps to improve the heat exchange efficiency and accelerate the temperature reduction of the cooling water or airflow.

[0093] In this embodiment, the switching control device 6 includes:

[0094] The forward and reverse drive mechanism 61 is fixed to the top of the frame 1 and located in front of the refrigerator 4;

[0095] Two drive shafts 62 are symmetrically distributed and connected to both ends of the forward and reverse drive mechanism 61;

[0096] Gear transmission assembly 63 is configured correspondingly to drive shaft 62 and connected to the corresponding hydrogen storage tank;

[0097] The transmission mechanism 64 is connected to the middle of the forward and reverse drive mechanism 61, and has two symmetrical three-way control components 65 on both sides. The three-way control components 65 are connected to the refrigerator 4, the cooling device 5 and the corresponding hydrogen storage tank.

[0098] In other words, when the forward and reverse drive mechanism 61 rotates in the forward direction, it drives the drive shaft 62 corresponding to the first hydrogen storage tank 2 to rotate, while the drive shaft 62 corresponding to the second hydrogen storage tank 3 remains fixed. Simultaneously, the transmission mechanism 64 drives the two three-way control components 65 to rotate. The three-way control component 65 corresponding to the first hydrogen storage tank 2 connects the cooling output pipe 44 and the first cooling pipe 56, and the three-way control component 65 corresponding to the second hydrogen storage tank 3 connects the second cooling pipe 57 to the recovery pipe at the hydrogen compressor 23 on the second hydrogen storage tank 3. The three-way control component 65... 5. After adjustment, the transmission mechanism 64 automatically disconnects from the forward and reverse drive mechanism 61. When the forward and reverse drive mechanism 61 switches directions, the transmission mechanism 64 reconnects with the forward and reverse drive mechanism 61. Then, the drive shaft 62 drives the centrifugal distribution component 24 to rotate through the gear transmission group 63, releasing the hydrogen in the first hydrogen storage tank 2. The hydrogen enters the refrigerator 4 through the first input pipe 42. Then, the low-temperature hydrogen enters the cooling component 54 through the cooling output pipe 44 and the first cooling pipe 56. Then, it is output through the second cooling pipe 57. After being compressed by the hydrogen compressor 23 through the recovery pipe, it is recovered into the second hydrogen storage tank 3.

[0099] In a preferred embodiment, under the action of the gear transmission group 63, the transmission ratio between the drive shaft 62 and the centrifugal distribution component 24 in the first hydrogen storage tank 2 is 1:1, and the transmission ratio between the drive shaft 62 and the centrifugal distribution component 24 in the second hydrogen storage tank 3 is 2:1. That is, at the same speed of the drive shaft 62, the speed of the centrifugal distribution component 24 in the second hydrogen storage tank 3 is slower. By using a higher transmission ratio, the output speed is reduced, thereby improving the control accuracy of the hydrogen delivery rate in the centrifugal distribution component 24. In other words, the cooling line from the first hydrogen storage tank 2 to the second hydrogen storage tank 3 is used for rapid cooling in the initial pre-cooling stage, and the cooling line from the second hydrogen storage tank 3 to the first hydrogen storage tank 2 is used for the distillation temperature control stage to precisely regulate the cooling temperature.

[0100] In this embodiment, the three-way control component 65 includes:

[0101] The long gear 651 is connected to the transmission mechanism 64;

[0102] The transmission gear 652 meshes with the long gear 651;

[0103] The control tube 653 is fixed at the connection between the refrigerator 4, the cooling device 5 and the corresponding hydrogen storage tank.

[0104] The threaded shaft 654 is fixedly connected to the transmission gear 652 and threadedly connected to the control tube 653;

[0105] The right-angle switching component 655 is movably disposed within the control tube 653 and is rotatably connected to the threaded shaft 654.

[0106] In other words, driven by the transmission mechanism 64, the long gears 651 on both sides rotate in opposite directions, driving the transmission gear 652 to rotate. Through the threaded shaft 654, the right-angle switching piece 655 moves in the control pipe 653 and the recovery pipe, respectively connecting the cooling output pipe 44 and the first cooling pipe 56, the second cooling pipe 57 and the recovery pipe, or the cooling output pipe 44 and the second cooling pipe 57, the first cooling pipe 56 and the recovery pipe, to assist in completing the flow of the cooling route.

[0107] In specific implementation, firstly, during the initial pre-cooling stage, when the forward and reverse drive mechanism 61 rotates forward, it drives the drive shaft 62 corresponding to the first hydrogen storage tank 2 to rotate, while the drive shaft 62 corresponding to the second hydrogen storage tank 3 remains fixed. Simultaneously, the transmission mechanism 64 drives the two three-way control components 65 to rotate. The three-way control component 65 corresponding to the first hydrogen storage tank 2 connects the cooling output pipe 44 and the first cooling pipe 56, and the three-way control component 65 corresponding to the second hydrogen storage tank 3 connects the second cooling pipe 57 to the recovery pipe at the hydrogen compressor 23 on the second hydrogen storage tank 3. After the three-way control components 65 are adjusted, the long gear 651 is restricted by the transmission gear 652 and the control pipe 653 and cannot rotate. Consequently, the transmission mechanism 64 automatically disengages from the forward and reverse drive mechanism 61, and the drive shaft... 62 drives the centrifugal distribution component 24 to rotate through the gear transmission group 63. The rotation speed of the rotating circular surface 242 is controlled by controlling the rotation speed of the drive shaft 62, thereby controlling the amount of hydrogen delivered. As the rotation speed of the centrifugal distribution component 24 increases, the amount of hydrogen delivered to the first hydrogen storage tank 2 increases, and the cooling effect is better. Then, the hydrogen pushes the sealing circular surface 422 through the first input pipe 42 to block the second input pipe 43, and then enters the refrigerator 4 through the hydrogen inlet pipe 41. Then, the low-temperature hydrogen enters the cooling component 54 through the cooling output pipe 44 and the first cooling pipe 56, where it exchanges heat with the cooling water in the cooling water tank 52 or the airflow in the air-cooled box 53. The air separation process is cooled by water cooling or air cooling. Then, the low-temperature hydrogen after heat exchange is output through the second cooling pipe 57, and after being compressed by the hydrogen compressor 23 through the recovery pipe, it is recovered into the second hydrogen storage tank 3.During the distillation temperature control stage, precise temperature control is required. At this time, the forward / reverse drive mechanism 61 rotates in the opposite direction, and the transmission mechanism 64 reconnects with the forward / reverse drive mechanism 61, thereby driving the drive shaft 62 corresponding to the second hydrogen storage tank 3 to rotate. The drive shaft 62 corresponding to the first hydrogen storage tank 2 remains fixed. Simultaneously, the transmission mechanism 64 drives the two three-way control components 65 to rotate. The three-way control component 65 corresponding to the second hydrogen storage tank 3 connects the cooling output pipe 44 and the second cooling pipe 57. The three-way control component 65 corresponding to the first hydrogen storage tank 2 connects the first cooling pipe 56 to the recovery pipe at the hydrogen compressor 23 on the first hydrogen storage tank 2. After the three-way control components 65 are adjusted, the long gear 651 is restricted by the transmission gear 652 and the control pipe 653 and cannot rotate. Therefore, the transmission mechanism 64... The drive mechanism 61 is disconnected from the forward and reverse rotation drive mechanism, and the drive shaft 62 drives the centrifugal distribution component 24 to rotate via the gear transmission group 63. By controlling the speed of the drive shaft 62, the speed of the rotating circular surface 242 is precisely adjusted to accurately control the hydrogen delivery volume and maintain the stable temperature conducted by the cooling component 54. Then, the hydrogen pushes the sealing circular surface 422 through the second input pipe 43 to seal the first input pipe 42, and then enters the refrigerator 4 through the hydrogen inlet pipe 41. Then, the low-temperature hydrogen enters the cooling component 54 through the cooling output pipe 44 and the second cooling pipe 57, where it exchanges heat with the cooling water in the cooling water tank 52 or the airflow in the air-cooled box 53. Water cooling or air cooling is used to dissipate heat from the air separation process. Then, the low-temperature hydrogen after heat exchange is output through the first cooling pipe 56, and after being compressed by the hydrogen compressor 23 through the recovery pipe, it is recycled back to the first hydrogen storage tank 2 for reuse.

[0108] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cryogenic cooling control system for air separation engineering based on hydrogen refrigeration, characterized in that: include: Frame (1); The first hydrogen storage tank (2) is fixed at one end of the frame (1), and the other end is fixed with a second hydrogen storage tank (3) that is symmetrical to it, and the two have the same structure; The refrigeration unit (4) is fixed at the top center of the frame (1) and connected to the first hydrogen storage tank (2) and the second hydrogen storage tank (3); The cooling device (5) is fixed in the middle of the frame (1), located below the refrigerator (4), and connected to the refrigerator (4); The switching control device (6) is fixed on the top of the frame (1), located in front of the refrigerator (4), and is connected to the first hydrogen storage tank (2) and the second hydrogen storage tank (3) respectively. The first hydrogen storage tank (2) includes: The tank body (21) is fixed to the frame body (1); Interface (22) is fixed to the top of the tank (21); A hydrogen compressor (23) is connected to the side of the interface (22) and is provided with a recovery pipe, which is connected to the refrigerator (4) and the cooling device (5). Centrifugal distribution assembly (24) is fixed on top of interface (22) and connected to refrigeration unit (4); The switching control device (6) includes: The forward and reverse drive mechanism (61) is fixed to the top of the frame (1) and located on the front side of the refrigerator (4); Two drive shafts (62) are symmetrically distributed and connected to both ends of the forward and reverse drive mechanism (61); The gear transmission assembly (63) is correspondingly provided with the drive shaft (62) and connected to the corresponding hydrogen storage tank; The transmission mechanism (64) is connected to the middle of the forward and reverse drive mechanism (61), and two symmetrical three-way control components (65) are provided on both sides. The three-way control components (65) are connected to the refrigerator (4), the cooling device (5) and the corresponding hydrogen storage tank.

2. The cryogenic cooling control system for air separation engineering based on hydrogen refrigeration according to claim 1, characterized in that: The centrifugal dispensing assembly (24) includes: The housing (241) is fixed to the top of the interface (22); The rotating circular surface (242) is rotatably disposed inside the limiting housing (241), and a toothed ring is provided on the outer side of the rotating circular surface (242). One side of the toothed ring passes through the limiting housing (241) and is connected to the switching control device (6). The flow channel (243) is square and has multiple channels arranged in a ring, passing through the rotating circular surface (242). The movable block (244) is movably positioned within the flow channel (243) at one end near the center of the rotating circular surface (242); Two blocking blocks (245) are symmetrically distributed vertically, fixedly connected to the moving block (244), and slidably connected to the rotating circular surface (242); A compression spring (246) connects the inner wall of the flow channel (243) and the moving block (244), and a tough protective surface is provided on the upper and lower sides corresponding to the compression spring (246) and the flow channel (243).

3. The cryogenic cooling control system for air separation engineering based on hydrogen refrigeration according to claim 1, characterized in that: The refrigerator (4) is provided with a hydrogen inlet pipe (41) and a cooling outlet pipe (44). The hydrogen inlet pipe (41) is connected to the first hydrogen storage tank (2) through the first input pipe (42) and to the second hydrogen storage tank (3) through the second input pipe (43). The cooling outlet pipe (44) is connected to the cooling device (5).

4. The cryogenic cooling control system for air separation engineering based on hydrogen refrigeration according to claim 3, characterized in that: The first input pipe (42) and the second input pipe (43) are provided with limiting rings (421) on the inner wall near the hydrogen inlet pipe (41), and sealing circular surfaces (422) are slidably provided between the limiting rings (421).

5. A cryogenic cooling control system for air separation engineering based on hydrogen refrigeration according to claim 1, characterized in that: The cooling device (5) includes: The lifting columns (51) are arranged in a ring, with four columns fixed on the lower plane of the frame (1) and located below the refrigeration unit (4); The cooling water tank (52) is installed between the lifting columns (51) and is connected to a water cooling pipe; The air-cooled box (53) is slidably installed inside the cooling water tank (52), with its top fixedly connected to the frame (1) and its bottom connected to the cooling water tank (52), and is also connected to an air-cooling pipe. The cooling assembly (54) is fixed inside the air-cooled box (53) by the connecting column (55), and the two ends are respectively connected to the first cooling pipe (56) and the second cooling pipe (57), and the first cooling pipe (56) and the second cooling pipe (57) are connected to the refrigerator (4) and the corresponding hydrogen storage tank.

6. A cryogenic cooling control system for air separation engineering based on hydrogen refrigeration according to claim 5, characterized in that: The cooling assembly (54) includes: Two cooling distribution plates (541) are symmetrically distributed and connected to the first cooling pipe (56) and the second cooling pipe (57) respectively; The heat exchange channels (542) are arranged in a ring, with multiple channels, each spiral in shape, arranged laterally, and fixed between the cold energy distribution plates (541); The heat exchange fins (543) are fixed on the outer wall of the heat exchange channel (542).

7. A cryogenic cooling control system for air separation engineering based on hydrogen refrigeration according to claim 1, characterized in that: The three-way control assembly (65) includes: A long gear (651) is connected to a transmission mechanism (64); The transmission gear (652) meshes with the long gear (651); The control tube (653) is fixed at the connection between the refrigerator (4), the cooling device (5) and the corresponding hydrogen storage tank; The threaded shaft (654) is fixedly connected to the transmission gear (652) and threadedly connected to the control tube (653); The right-angle switching element (655) is movably disposed within the control tube (653) and rotatably connected to the threaded shaft (654).

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