Liquid nitrogen gasification compression equipment

Abstract

The utility model is applicable to the technical field of liquid nitrogen processing, and provides liquid nitrogen gasification compression equipment which comprises a support frame, the box body is installed at the top of the supporting frame, a high-pressure fan used for extracting air and a compressor used for compressing air are arranged in the box body, and the compressor is connected with the air exhaust end of the high-pressure fan; the liquid discharging pipe is installed at the liquid discharging end of the compressor, and the liquid discharging pipe extends out of the box body; the liquid storage tank is detachably mounted at the liquid discharging end of the liquid discharging pipe, and the liquid storage tank is used for storing the compressed liquid. According to the liquid nitrogen gasification compression equipment provided by the scheme, air to be compressed can be effectively filtered and purified, the nitrogen purity is increased, and the subsequent separation difficulty is reduced, so that the gasification loss is reduced, and the processing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid nitrogen processing, in particular to liquid nitrogen gasification and compression equipment. Background Art

[0002] Liquid nitrogen refers to liquid nitrogen. Liquid nitrogen is an inert, colorless, odorless, non-corrosive, non-flammable liquid with an extremely low temperature. When it vaporizes, it absorbs a large amount of heat and can cause frostbite on contact. Nitrogen makes up a large part of the atmosphere. In industry, liquid nitrogen is obtained by fractional distillation of air. After the air is purified, it is liquefied under a pressurized and cooled environment and separated by the different boiling points of the air components.

[0003] However, when air is extracted during liquid nitrogen processing, only solid impurities in the air are filtered out. Various gases are mixed together and compressed into liquid, and then separated based on their boiling points. Since the air composition is relatively mixed, separating liquid nitrogen requires multiple steps, a long process, and will also cause liquid loss, affecting production. Utility Model Content

[0004] The utility model provides a liquid nitrogen gasification and compression device, which aims to solve the problem in the background art that when extracting air during liquid nitrogen processing, only solid impurities in the air are filtered, resulting in inconvenience in liquid nitrogen separation.

[0005] To solve the above problems, the present invention is implemented as follows: a liquid nitrogen gasification and compression device, comprising: a support frame; a box body, the box body is installed on the top of the support frame, a high-pressure fan for extracting air and a compressor for compressing air are provided in the box body, and the compressor is connected to the exhaust end of the high-pressure fan; a drain pipe, the drain pipe is installed at the discharge end of the compressor, and the drain pipe extends to the outside of the box body; a liquid storage tank, the liquid storage tank is detachably installed at the discharge end of the drain pipe, and the liquid storage tank is used to store compressed liquid; a filter assembly, the filter assembly is arranged on the support frame, and the filter assembly is used to filter air.

[0006] Preferably, the filter assembly includes an air inlet pipe, a shell, a protective cover and a filter box. The air inlet pipe is installed at the air inlet end of the high-pressure blower and extends outside the box body. The shell is installed on the support frame and connected to the air inlet pipe. The protective cover is detachably installed at the bottom of the shell. The filter box is detachably installed at the bottom of the protective cover. The filter box is filled with filter material for isolating solid impurities.

[0007] Preferably, a filter membrane holder is installed on the top of the protective cover, the filter membrane holder is located in the shell, a polymer film is installed on the surface of the filter membrane holder, the air inlet pipe extends into the filter membrane holder, a vacuum pump is installed on one side of the shell, and the air inlet end of the vacuum pump extends into the shell and is located outside the filter membrane holder.

[0008] Preferably, a return pipe is installed on the top of the drain pipe, and the return pipe is used to assist gas reflux. The exhaust end of the return pipe is connected to the air inlet pipe. Valves are provided on the drain pipe, return pipe, air inlet pipe and protective cover. A one-way valve is provided at the exhaust end of the high-pressure blower, and multiple valves are all check valves.

[0009] Preferably, an isolation net for isolating the filter material is provided at the bottom of the filter box, and fixing rings are provided on the shell and the protective cover. The two fixing rings are fixedly connected by bolts, and a sealing ring is provided on the side where the two fixing rings are close to each other.

[0010] Preferably, an operation port is provided on one side of the box body, a protective door for closing the operation port is installed on one side of the box body, and an observation window for observing the operation of the machine is provided on the protective door.

[0011] Preferably, the filter membrane holder is provided with a threaded opening, the air inlet pipe is threadedly connected to the threaded opening, the air inlet pipe is provided with a silicone ring, and the silicone ring is in contact with the top outer wall of the threaded opening.

[0012] Compared with related technologies, the liquid nitrogen gasification and compression equipment provided by the present invention has the following beneficial effects:

[0013] Compared with the existing technology, the liquid nitrogen gasification compression equipment provided by this solution can compress the air by providing a high-pressure fan and a compressor, and can remove impurities from the air by providing a shell, a protective cover and a filter box. At the same time, it can separate the hydroxide ions in the air, increase the purity of the nitrogen, and reduce the difficulty of subsequent impurity separation, thereby reducing waste and increasing processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a liquid nitrogen gasification and compression device provided by the utility model;

[0015] Figure 2 This is a schematic diagram of the main cross-sectional structure of a liquid nitrogen gasification and compression device provided by the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the filter box in the utility model;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the protective cover and the filter membrane frame in the utility model.

[0018] Figure numerals: 1. Support frame; 2. Box body; 3. Compressor; 4. High-pressure fan; 5. Drain pipe; 6. Liquid storage tank; 7. Return pipe; 8. Inlet pipe; 9. Shell; 10. Protective cover; 11. Filter box; 12. Filter membrane rack; 13. Vacuum pump; 14. Valve; 15. Protective door; 16. Observation window. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the description of the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0020] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The present invention provides a liquid nitrogen gasification and compression device. Figure 1-4 As shown, the liquid nitrogen gasification compression equipment includes: a support frame 1; a box body 2, wherein the box body 2 is mounted on the top of the support frame 1, and a high-pressure fan 4 for extracting air and a compressor 3 for compressing air are provided in the box body 2, and the compressor 3 is connected to the exhaust end of the high-pressure fan 4; a drain pipe 5, wherein the drain pipe 5 is mounted at the discharge end of the compressor 3, and the drain pipe 5 extends to the outside of the box body 2; a liquid storage tank 6, wherein the liquid storage tank 6 is detachably mounted at the discharge end of the drain pipe 5, and the liquid storage tank 6 is used to store compressed liquid; a filter assembly, wherein the filter assembly is arranged on the support frame 1, and the filter assembly is used to filter air.

[0022] In this embodiment, the support frame 1 serves as the supporting foundation of the entire system, ensuring that other components such as the housing 2 and the compressor 3 can be stably installed and operated, thereby improving the stability and safety of the system and facilitating the overall installation and maintenance of the equipment. The housing 2 integrates the high-pressure fan 4 and the compressor 3, which is the main working area for air extraction and compression. It provides a closed working environment, reduces external interference, and improves the efficiency and quality of air processing. The high-pressure fan 4 is responsible for extracting external air and providing the original air source for the entire system. The strong suction force ensures sufficient air flow and is the basis for the compression and separation process. The compressor 3 compresses the air extracted by the high-pressure fan 4, reducing its volume and increasing its density. The compression process creates conditions for subsequent liquefaction separation and improves the processing efficiency. The discharge pipe 5 guides the liquid air (mixed gas) compressed by the compressor 3 to the liquid storage tank 6, ensuring the smooth flow of liquid air and avoiding the efficiency reduction or damage caused by accumulation inside the compressor 3. The liquid storage tank 6 stores the compressed liquid air in preparation for the subsequent separation process. As an intermediate storage container, it ensures the continuity and stability of the system and facilitates subsequent batch processing and transportation.

[0023] In a further preferred embodiment of the present invention, the filter assembly includes an air intake pipe 8, a shell 9, a protective cover 10 and a filter box 11, the air intake pipe 8 is installed at the air intake end of the high-pressure blower 4 and extends to the outside of the box 2, the shell 9 is installed on the support frame 1 and is connected to the air intake pipe 8, the protective cover 10 is detachably installed at the bottom of the shell 9, the filter box 11 is detachably installed at the bottom of the protective cover 10, and the filter box 11 is filled with filter material for isolating solid impurities.

[0024] In this embodiment, the air inlet pipe 8 serves as a channel for air to enter the high-pressure blower 4. It is installed at the air inlet end of the high-pressure blower 4 and extends to the outside of the box 2, ensuring that the external air can be smoothly extracted, ensuring a stable supply of the air source, and providing a basis for subsequent processing procedures. The shell 9 serves as a support and protection structure for the filter box 11 and its related components. The protective cover 10 facilitates the replacement and maintenance of the filter box 11 and its internal filter material, thereby improving the maintainability of the equipment and reducing maintenance costs and time. The filter box 11 effectively removes solid impurities in the air, such as dust, particulate matter, etc., protects the normal operation of subsequent processing equipment, and improves the purity of the final product.

[0025] In a further preferred embodiment of the present invention, a filter membrane holder 12 is installed on the top of the protective cover 10, and the filter membrane holder 12 is located in the shell 9. A polymer film is installed on the surface of the filter membrane holder 12, and the air inlet pipe 8 extends into the filter membrane holder 12. A vacuum pump 13 is installed on one side of the shell 9, and the air inlet end of the vacuum pump 13 extends into the shell 9 and is located outside the filter membrane holder 12.

[0026] In this embodiment, the membrane holder 12 serves as a supporting structure for the polymer film, ensuring that the film can be stably fixed on the filtration path. With the support of the membrane holder 12, the polymer film can more effectively intercept tiny particles and pollutants in the air, thereby improving the filtration accuracy and efficiency. By utilizing the special properties of the polymer material, oxygen and part of the hydrogen in the air are separated, and the nitrogen purity is increased. During the filtration process, negative pressure is generated to help accelerate the passage of air through the membrane holder 12 and the polymer film, thereby improving the filtration efficiency. The introduction of the vacuum pump 13 makes the filtration process more efficient, reduces the residence time of air in the filter assembly, and reduces energy consumption and costs.

[0027] In a further preferred embodiment of the present invention, a return pipe 7 is installed on the top of the drain pipe 5, and the return pipe 7 is used to assist gas reflux. The exhaust end of the return pipe 7 is connected to the intake pipe 8. The drain pipe 5, the return pipe 7, the intake pipe 8 and the protective cover 10 are all provided with valves 14. The exhaust end of the high-pressure blower 4 is provided with a one-way valve, and multiple valves 14 are all check valves.

[0028] In this embodiment, the return pipe 7 is used to assist in returning part of the gas to the intake pipe 8 under specific working conditions, such as when the exhaust pressure of the compressor 3 is too high or the gas balance in the system needs to be adjusted, so as to realize the recycling of the gas. Through the design of the return pipe 7, the flexibility and stability of the system are improved, and the adverse effects of pressure fluctuations on the system are reduced. At the same time, the recycling of gas also improves resource utilization and reduces energy consumption. The check valve can prevent gas or liquid from flowing back in the pipeline, ensure the correct direction of gas flow in the system, and maintain the stable operation of the system. The setting of valve 14 enables the system to flexibly adjust the gas flow path under different working conditions, thereby improving the controllability and safety of the system. The use of the one-way valve further enhances the stability and safety of the system and protects key equipment from damage.

[0029] In a further preferred embodiment of the present invention, an isolation net for isolating the filter material is provided at the bottom of the filter box 11, and a fixing ring is provided on the shell 9 and the protective cover 10. The two fixing rings are fixedly connected by bolts, and a sealing ring is provided on the side where the two fixing rings are close to each other.

[0030] In this embodiment, the isolation net is used to isolate the filter material to prevent the filter material from scattering or clogging the pipeline due to the impact of airflow during the filtration process. The design of the isolation net ensures the stability and filtration effect of the filter material, while reducing the equipment damage and maintenance costs caused by the scattering of the filter material. The fixing ring serves as a fixing structure connecting the shell 9 and the protective cover 10, and the two are tightly connected together by bolts. The combined use of the fixing ring and the bolts makes the connection between the shell 9 and the protective cover 10 more firm and reliable, preventing loosening or falling off due to vibration or external force. The design of the sealing ring improves the sealing performance of the system, ensures that the gas inside the filter component will not leak out, and also prevents external impurities from entering the filter component, ensuring the filtration effect and product quality.

[0031] In a further preferred embodiment of the present invention, an operation port is provided on one side of the box body 2, and a protective door 15 for closing the operation port is installed on one side of the box body 2, and an observation window 16 for observing the operation of the machine is provided on the protective door 15.

[0032] In this embodiment, the operation port provides maintenance personnel with a passage to enter the interior of the box 2 to inspect, maintain or replace equipment components. The protective door 15 protects the equipment inside the box 2 from the influence of the external environment and provides a safe operation entrance. The design of the protective door 15 ensures the cleanliness and safety of the interior of the box 2, prevents the invasion of external factors such as dust and moisture, and extends the service life of the equipment. In addition, it also provides a convenient operation entrance for maintenance personnel and improves maintenance efficiency. The observation window 16 allows the mechanical operation inside the box 2 to be observed through the transparent material without opening the protective door 15, so as to timely discover and deal with potential problems, thereby improving the safety and reliability of the equipment. It also reduces the energy loss and environmental pollution caused by frequent opening of the protective door 15.

[0033] In a further preferred embodiment of the present invention, a threaded opening is provided on the filter membrane holder 12, the air inlet pipe 8 is threadedly connected to the threaded opening, and a silicone ring is provided on the air inlet pipe 8, which contacts the top outer wall of the threaded opening.

[0034] In this embodiment, the threaded port provides an interface for threaded connection with the air inlet pipe 8, ensuring a stable connection between the two, reducing air leakage problems caused by loose connections, and improving the sealing and filtration efficiency of the system. The addition of the silicone ring further enhances the sealing of the connection, ensuring that the gas inside the filter component will not leak out, and also preventing external impurities from entering the filter component, ensuring the filtration effect and product quality.

[0035] In summary, compared with the relevant technology, the present device can compress the air by providing the high-pressure fan 4 and the compressor 3, and can remove impurities from the air by providing the shell 9, the protective cover 10 and the filter box 11, while separating the hydroxide ions in the air, increasing the purity of the nitrogen, and reducing the difficulty of subsequent impurity separation, thereby reducing waste and increasing processing efficiency.

[0036] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A liquid nitrogen gasification and compression device, characterized in that: include: Support frame; A box body, the box body is installed on the top of the support frame, and a high-pressure fan for extracting air and a compressor for compressing air are provided in the box body, and the compressor is connected to the exhaust end of the high-pressure fan; A liquid discharge pipe, the liquid discharge pipe being installed at the liquid discharge end of the compressor and extending outside the casing; A liquid storage tank, which is detachably mounted on the discharge end of the liquid discharge pipe and is used to store compressed liquid; A filter assembly is arranged on the support frame, and the filter assembly is used to filter air.

2. The liquid nitrogen gasification and compression equipment according to claim 1, characterized in that: The filter assembly includes an air inlet pipe, a shell, a protective cover and a filter box. The air inlet pipe is installed at the air inlet end of the high-pressure blower and extends outside the box body. The shell is installed on the support frame and connected to the air inlet pipe. The protective cover is detachably installed at the bottom of the shell. The filter box is detachably installed at the bottom of the protective cover. The filter box is filled with filter material for isolating solid impurities.

3. The liquid nitrogen gasification and compression equipment according to claim 2, characterized in that: A filter membrane holder is installed on the top of the protective cover, and the filter membrane holder is located in the shell. A polymer film is installed on the surface of the filter membrane holder. The air inlet pipe extends into the filter membrane holder. A vacuum pump is installed on one side of the shell, and the air inlet end of the vacuum pump extends into the shell and is located outside the filter membrane holder.

4. The liquid nitrogen gasification and compression equipment according to claim 2, wherein: A return pipe is installed on the top of the drain pipe, and the return pipe is used to assist gas reflux. The exhaust end of the return pipe is connected to the air inlet pipe. Valves are provided on the drain pipe, return pipe, air inlet pipe and protective cover. A one-way valve is provided at the exhaust end of the high-pressure blower, and multiple valves are all check valves.

5. The liquid nitrogen gasification and compression equipment according to claim 2, characterized in that: An isolation net for isolating filter materials is provided at the bottom of the filter box. A fixing ring is provided on the shell and the protective cover. The two fixing rings are fixedly connected by bolts. A sealing ring is provided on the side where the two fixing rings are close to each other.

6. The liquid nitrogen gasification and compression equipment according to claim 1, wherein: An operation port is provided on one side of the box body, a protective door for closing the operation port is installed on one side of the box body, and an observation window for observing the operation of the machine is provided on the protective door.

7. The liquid nitrogen gasification and compression equipment according to claim 3, characterized in that: The filter membrane holder is provided with a threaded opening, the air inlet pipe is threadedly connected to the threaded opening, and the air inlet pipe is provided with a silicone ring, which is in contact with the top outer wall of the threaded opening.

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