Fluid vacuum cooling equipment capable of automatically monitoring operation

Abstract

The utility model discloses fluid vacuum cooling equipment capable of automatically monitoring operation, which comprises a vacuum cooling chamber adopting a double-layer stainless steel structure, and nano aerogel is filled in an interlayer of the vacuum cooling chamber for heat preservation. Porous nozzles which are annularly distributed are arranged at the top of the vacuum cooling chamber and are connected to a refrigerating unit to spray low-temperature airflow; and a magnetically-driven stirring impeller is arranged at the bottom to enhance the fluid mixing effect. The equipment is equipped with various monitoring devices such as an optical fiber temperature sensor, a capacitance film vacuum gauge and a Coriolis force mass flow meter, so that the temperature, the vacuum degree and the flow can be monitored in real time. The system further comprises a main and standby redundant vacuum pump set and a dry ice storage refrigeration mechanism, and the efficient, uniform and controlled fluid cooling process can be achieved. The equipment is widely suitable for meeting the requirements for high-purity and high-stability cooling environments in the fields of medicine, food, biological products and the like.

Description

Technical Field

[0001] This utility model relates to a fluid vacuum cooling device that can automatically monitor its operation. Background Technology

[0002] With the increasing demands for high efficiency, precision control, and green environmental protection in modern industry, fluid cooling, as a key step in many processes, is developing towards integration, intelligence, and high performance. In fields such as pharmaceutical manufacturing, biopharmaceutical processing, fine chemicals, and food preservation, fluid materials often require rapid cooling during processing to inhibit chemical reactions, byproduct formation, or bacterial growth, thereby ensuring product quality and process safety.

[0003] Traditional cooling methods typically employ shell-and-tube heat exchangers, plate heat exchangers, or chilled water cooling. While these methods are simple in structure and widely used, they suffer from the following problems:

[0004] Limited cooling efficiency: Traditional methods rely heavily on heat conduction for heat exchange, which results in slow cooling rates when dealing with high-temperature, high-viscosity fluids or large-volume processing, making it difficult to meet the demand for rapid cooling.

[0005] Low temperature control accuracy: Due to the lack of a real-time feedback mechanism, the system responds slowly to temperature changes, making it difficult to maintain a constant low temperature or temperature control within the set range.

[0006] High energy consumption and serious waste: low utilization rate of cooling medium, large heat loss, and high system operating costs.

[0007] Vacuum cooling applications are limited: Some special materials need to be cooled in a vacuum environment to avoid oxidation or volatilization, but traditional equipment often lacks vacuum function or has poor monitoring capabilities, resulting in insufficient stability and safety.

[0008] Outdated monitoring methods: Most cooling systems lack complete parameter monitoring methods, such as the inability to obtain key parameters like temperature distribution, vacuum level, and flow rate online in real time, which affects the overall automation and intelligence level of the system.

[0009] In recent years, vacuum cooling technology has been increasingly applied in the field of fluid processing due to its advantages such as rapid cooling, low-temperature evaporation, and oxidation inhibition. However, existing vacuum cooling equipment is mostly static in structure, with simple design and limited control methods. It lacks efficient heat exchange structures and intelligent monitoring systems, making it difficult to meet the demands of modern industry for process stability, process visualization, and energy optimization.

[0010] Therefore, there is an urgent need for a fluid vacuum cooling device with high thermal insulation performance, high efficiency cooling capacity and comprehensive automatic monitoring function to overcome the shortcomings of existing technologies and improve the efficiency, safety and intelligence of fluid processing. Utility Model Content

[0011] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fluid vacuum cooling device that can automatically monitor its operation.

[0012] A fluid vacuum cooling device capable of automatic monitoring operation includes a vacuum cooling chamber, which is a double-layer stainless steel structure. The space between the outer shell and the inner liner of the vacuum cooling chamber is filled with nano-aerogel. The top of the vacuum cooling chamber is provided with a ring-shaped multi-hole nozzle connected to a refrigeration unit for spraying low-temperature airflow. The bottom of the vacuum cooling chamber is provided with a magnetically driven stirring impeller. The vacuum cooling chamber is connected to an external vacuum pump unit. A temperature sensor is provided on the inner wall of the vacuum cooling chamber. Capacitive thin-film vacuum gauges are provided at the top and bottom of the vacuum cooling chamber. The vacuum cooling chamber is provided with a fluid inlet pipe and a fluid outlet pipe, and Coriolis mass flow meters are provided on the fluid inlet pipe and the fluid outlet pipe.

[0013] As a further improvement, the outer shell of the vacuum cooling chamber is made of 304L stainless steel, and the inner liner is made of 316L stainless steel, with the inner surface of the inner liner being mirror-polished.

[0014] As a further improvement, the temperature sensor is a fiber optic temperature sensor, and there are 12 fiber optic temperature sensors distributed in a ring array along the inner wall of the vacuum chamber.

[0015] As a further improvement, the vacuum pump set includes a main pump, a standby pump, and a vacuum pipeline. The main pump is a dry spiral vacuum pump, the standby pump is an oil rotary vane pump, and the vacuum pipeline is equipped with a pneumatic butterfly valve and a vacuum buffer tank.

[0016] As a further improvement, the refrigeration unit includes a dry ice storage chamber, which is equipped with a one-way air inlet valve. The dry ice storage chamber is connected to a multi-hole nozzle via a gas pipeline, and an air pump is provided on the gas pipeline.

[0017] As a further improvement, the central axis of the stirring impeller is set horizontally, and both ends of the stirring impeller are connected to the side wall of the vacuum cooling chamber and placed horizontally inside the vacuum cooling chamber. Beneficial effects

[0018] 1. High-efficiency thermal insulation performance: It adopts a double-layer stainless steel structure with nano-aerogel filling between the inner and outer layers, which greatly improves thermal insulation performance and reduces energy consumption.

[0019] 2. Precise environmental control: Low-temperature airflow is injected through annularly distributed multi-hole nozzles, combined with a bottom magnetic stirring impeller, which effectively improves cooling uniformity and efficiency.

[0020] 3. Fully automated monitoring: Equipped with fiber optic temperature sensors, capacitive thin-film vacuum gauges, and mass flow meters, it enables real-time and accurate monitoring of temperature, vacuum level, and flow rate during the cooling process.

[0021] 4. Reliable operation mechanism: The vacuum pump set adopts a main and backup redundant configuration to ensure that the equipment can still operate stably when the main pump fails, thus enhancing the reliability of the system.

[0022] 5. Green and environmentally friendly refrigeration: It adopts a dry ice refrigeration solution, which does not require traditional Freon refrigerants, making it environmentally friendly and pollution-free, and reducing maintenance costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of a fluid vacuum cooling device that can automatically monitor its operation.

[0024] 1. Vacuum cooling chamber 2. Aerogel 3. Porous nozzle 4. Stirring impeller 5. Temperature sensor 6. Vacuum pump assembly 7. Air pump 8. Dry ice storage chamber 9. One-way air inlet valve. Detailed Implementation

[0025] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0026] like Figure 1 As shown, a fluid vacuum cooling device capable of automatic monitoring of operation includes a vacuum cooling chamber 1, an aerogel 2, a porous nozzle 3, a stirring impeller 4, a temperature sensor 5, a vacuum pump assembly 6, an air pump 7, a dry ice storage chamber 8, and a one-way air inlet valve 9.

[0027] A fluid vacuum cooling device capable of automatically monitoring operation, comprising:

[0028] Vacuum Cooling Chamber 1: Features a double-layer structure; the outer shell is made of 304L stainless steel, and the inner liner is made of 316L stainless steel, both with a mirror-polished finish. Nano-aerogel 2 is filled between the inner and outer walls to enhance thermal insulation.

[0029] Cooling system: A ring of perforated nozzles 3 are evenly distributed on the top of the cooling chamber and connected to the dry ice storage and refrigeration mechanism via gas pipelines. The nozzles are used to spray dry ice gas to achieve rapid cooling.

[0030] Stirring device: A magnetically driven stirring impeller 4 is installed at the bottom of the cooling chamber. The central shaft of the impeller is set horizontally, and both ends are connected to the side wall of the chamber through sealed bearings to ensure stable operation in a vacuum environment.

[0031] Sensor system:

[0032] Temperature monitoring: A total of 12 fiber optic temperature sensors are arranged in a ring array on the inner wall of the cooling chamber for high-precision real-time temperature acquisition.

[0033] Vacuum monitoring: Capacitive thin-film vacuum gauges are installed at the top and bottom to reflect changes in vacuum level in real time.

[0034] Flow monitoring: Coriolis mass flow meters are installed on the fluid inlet and outlet pipes respectively to monitor the fluid inflow and outflow rates.

[0035] Vacuum system: Connected to external vacuum pump unit 6 via vacuum pipeline. Vacuum pump unit 6 includes one dry spiral vacuum pump as the main pump and one oil rotary vane pump as the backup pump. The system is equipped with a pneumatic butterfly valve and a vacuum buffer tank for adjusting pressure and maintaining vacuum stability.

[0036] Refrigeration mechanism: Dry ice storage chamber 8 is used in conjunction with air pump 7 to deliver cooling gas to nozzles through gas pipelines, forming a closed loop circulation.

[0037] Fluid channels: The equipment is equipped with independent fluid inlet and outlet pipes to facilitate the delivery and control of the fluid being cooled.

[0038] A fluid vacuum cooling device capable of automatic monitoring of operation includes a vacuum cooling chamber 1, which is a double-layer stainless steel structure. The space between the outer shell and the inner liner of the vacuum cooling chamber 1 is filled with nano-aerogel 2. The top of the vacuum cooling chamber 1 is provided with a ring-shaped distribution of porous nozzles 3, which are connected to a refrigeration unit for spraying low-temperature airflow. The bottom of the vacuum cooling chamber 1 is provided with a magnetically driven stirring impeller 4. The vacuum cooling chamber 1 is connected to an externally located vacuum pump unit 6. A temperature sensor 5 is provided on the inner wall of the vacuum cooling chamber 1. Capacitive thin-film vacuum gauges are provided at the top and bottom of the vacuum cooling chamber 1, respectively. The vacuum cooling chamber 1 is provided with a fluid inlet pipe and a fluid outlet pipe, and Coriolis mass flow meters are provided on the fluid inlet pipe and the fluid outlet pipe.

[0039] Thermal efficiency optimization: Nano-aerogel 2 filling reduces cold loss;

[0040] Cooling uniformity: The combined effect of top spraying and bottom magnetic stirring eliminates temperature stratification;

[0041] Monitoring reliability: The combination of a capacitive thin-film vacuum gauge and a temperature sensor 5 enables automatic monitoring operation.

[0042] The outer shell of the vacuum cooling chamber 1 is made of 304L stainless steel, and the inner liner is made of 316L stainless steel. The inner surface of the inner liner is mirror polished. The combination of 316L inner liner and mirror polishing improves corrosion resistance, reduces surface roughness, and reduces high-viscosity fluid residue.

[0043] The temperature sensor 5 is a fiber optic temperature sensor 5, and there are 12 fiber optic temperature sensors 5 arranged in a ring array along the inner wall of the vacuum chamber. The 12-point fiber optic sensor ring array is as follows:

[0044] The vacuum pump unit 6 includes a main pump, a standby pump, and a vacuum pipeline. The main pump is a dry screw vacuum pump, and the standby pump is an oil vane pump. The vacuum pipeline is equipped with a pneumatic butterfly valve and a vacuum buffer tank. The dry screw main pump + oil vane standby pump, with the pneumatic butterfly valve and buffer tank, reduces the vacuum fluctuation rate.

[0045] The refrigeration unit includes a dry ice storage chamber 8, which is equipped with a one-way air inlet valve 9. The dry ice storage chamber 8 is connected to a gas pipeline with a multi-hole nozzle 3. The gas pipeline is equipped with an air pump 7. Dry ice is directly injected for refrigeration, eliminating the need for a traditional refrigerant circulation system, improving the energy efficiency ratio, and the one-way valve prevents vacuum backflow.

[0046] The central axis of the stirring impeller 4 is set horizontally, and both ends of the stirring impeller 4 are connected to the side wall of the vacuum cooling chamber 1 and placed horizontally inside the vacuum cooling chamber 1. The horizontal axis double support of the impeller increases the torque, and the magnetic drive realizes dynamic sealing.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A fluid vacuum cooling device capable of automatically monitoring operation, characterized in that, The system includes a vacuum cooling chamber, which is a double-layered stainless steel structure. The space between the outer shell and the inner liner of the vacuum cooling chamber is filled with nano-aerogel. The top of the vacuum cooling chamber is equipped with a ring-shaped multi-hole nozzle connected to a refrigeration unit for spraying low-temperature airflow. The bottom of the vacuum cooling chamber is equipped with a magnetically driven stirring impeller. The vacuum cooling chamber is connected to an external vacuum pump unit. A temperature sensor is installed on the inner wall of the vacuum cooling chamber. Capacitive thin-film vacuum gauges are installed at the top and bottom of the vacuum cooling chamber. The vacuum cooling chamber is equipped with a fluid inlet pipe and a fluid outlet pipe, and Coriolis mass flow meters are installed on the fluid inlet pipe and the fluid outlet pipe.

2. The fluid vacuum cooling device with automatic monitoring operation according to claim 1, characterized in that, The outer shell of the vacuum cooling chamber is made of 304L stainless steel, and the inner liner is made of 316L stainless steel. The inner surface of the inner liner is mirror polished.

3. The fluid vacuum cooling device with automatic monitoring operation according to claim 1, characterized in that, The temperature sensor is a fiber optic temperature sensor, and there are 12 fiber optic temperature sensors arranged in a ring array along the inner wall of the vacuum chamber.

4. The fluid vacuum cooling device with automatic monitoring operation according to claim 1, characterized in that, The vacuum pump set includes a main pump, a standby pump, and vacuum pipelines. The main pump is a dry spiral vacuum pump, the standby pump is an oil rotary vane pump, and the vacuum pipelines are equipped with pneumatic butterfly valves and vacuum buffer tanks.

5. A fluid vacuum cooling device capable of automatic monitoring of operation according to claim 1, characterized in that, The refrigeration unit includes a dry ice storage chamber, which is equipped with a one-way air inlet valve. The dry ice storage chamber is connected to a multi-hole nozzle via a gas pipeline, and an air pump is installed on the gas pipeline.

6. The fluid vacuum cooling device with automatic monitoring operation according to claim 1, characterized in that, The central axis of the stirring impeller is set horizontally, and both ends of the stirring impeller are connected to the side wall of the vacuum cooling chamber and placed horizontally inside the vacuum cooling chamber.

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