A high-efficiency marine nitrogen generator

Abstract

This invention belongs to the field of marine pressure swing adsorption (PSA) nitrogen generation equipment, specifically a high-efficiency marine nitrogen generation device. It includes an upper panel and a lower panel, which are respectively sealed to an upper housing and a lower housing. Multiple support rods are fixedly connected between the upper and lower panels. Multiple adsorption cylinders, communicating with the interiors of the upper and lower housings, are evenly spaced between the upper and lower panels. Each adsorption cylinder is detachably connected to both the upper and lower panels. Each adsorption cylinder contains a spiral baffle with a uniform pitch, and molecular sieve particles are filled in the spaces between the spiral baffles. The independently arranged multiple adsorption cylinders reduce space occupation while ensuring balanced nitrogen generation efficiency within each cylinder. Simultaneously, the spiral baffles reduce gas flow velocity, improving nitrogen generation efficiency while preventing wear and tear between the molecular sieve particles.

Description

Technical Field

[0001] This invention belongs to the field of marine pressure swing adsorption nitrogen generation equipment, specifically a high-efficiency marine nitrogen generation device. Background Technology

[0002] In the marine industry, pressure swing adsorption (PSA) nitrogen generators play a crucial role, for example, providing an inert gas environment in the cargo holds of oil and chemical tankers to prevent hazards from flammable and explosive materials. However, existing marine PSA nitrogen generators have many problems. From an external perspective, traditional equipment is often large, occupying too much valuable space in the limited space of a ship, which is detrimental to the rational layout of the vessel and the installation and use of other equipment. The special nature of the marine environment places stringent requirements on the spatial layout, performance, and stability of the equipment. Currently, marine PSA nitrogen generators have revealed a series of problems that urgently need to be solved in practical applications.

[0003] Because space inside ships is extremely limited, marine pressure swing adsorption (PSA) nitrogen generators are often designed to be short and stubby to fit the limited space. While this design solves the space occupation problem to some extent, it negatively impacts nitrogen production efficiency.

[0004] The short and thick adsorption tower results in a short residence time for the gas inside the tower, which prevents impurities such as oxygen and carbon dioxide in the compressed air from being fully adsorbed by the carbon molecular sieve. This significantly reduces the separation effect of nitrogen from impurities, ultimately leading to a nitrogen production efficiency far below expectations. In addition, the uneven airflow distribution in the existing equipment prevents the molecular sieve inside the nitrogen generator's adsorption tower from fully and evenly performing its adsorption function, further reducing nitrogen production efficiency.

[0005] As the ship operates on the sea, it is easily rocked by the waves. The nitrogen generation equipment, which is fixed in the ship's cabin, moves back and forth with the ship, causing the molecular sieves to collide and rub against each other. Since molecular sieves mainly utilize the small gaps within the molecular sieve particles to fully contact the air to generate nitrogen, if the molecular sieve particles break or even become powdered due to friction and collision, some molecular sieves will fail before reaching their service life, shortening the service life of the molecular sieves and increasing maintenance costs.

[0006] Furthermore, the sailing environment varies greatly. If a ship is sailing in a cold environment, such as on the Arctic route, the temperature inside the cabin is low and does not meet the optimal operating temperature range for pressure swing adsorption (PSA) nitrogen production. If the constant temperature cannot be effectively maintained, the nitrogen production efficiency will be affected. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention addresses the following technical problem: By using multiple adsorption cylinders, it reduces the height and space occupied compared to traditional pressure swing adsorption (PSA) nitrogen generators, making it suitable for the confined spaces of ship cabins. Furthermore, compared to simply shortening the molecular sieve sleeve, this solution utilizes multiple adsorption cylinders to distribute the gas, ensuring that the molecular sieve within each cylinder is fully and uniformly utilized, avoiding the problem of uneven gas distribution within the molecular sieve in shorter, thicker sleeves. The threaded, detachable connection between each adsorption cylinder and the upper and lower panels allows for independent disassembly and maintenance of individual cylinders. In case of blockages in a particular cylinder, targeted replacement is possible, facilitating maintenance and reducing costs. The use of spiral baffles further ensures that the gas passes through... Molecular sieves slow down the airflow velocity, and the granular molecular sieves can fully fill the gaps between the spiral baffles, allowing the gas to contact the molecular sieves more fully. This effectively improves nitrogen production efficiency while reducing volume. The spiral baffles effectively limit the axial up-and-down movement of the granular molecular sieves in the adsorption cylinder, and the sponge layer mitigates the collision of molecular sieve particles. At the same time, the elastic coating layer expands and fills the gaps between molecular sieves, thus preventing wear between molecular sieves and maintaining their good working condition, ensuring their service life. By setting up a heat exchanger, the temperature of the gas charged into the inner support tube can be adjusted, and the temperature is then conducted to the molecular sieves through the elastic coating layer. In cold environments, the heat exchanger can keep the molecular sieves in the optimal operating temperature range to ensure nitrogen production efficiency and effect.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency marine nitrogen generator, comprising an upper panel and a lower panel, wherein an upper cover and a lower cover are respectively sealed and connected to the upper panel and the lower panel, and a plurality of support rods are fixedly connected between the upper panel and the lower panel.

[0009] Furthermore, multiple adsorption cylinders that communicate with the interior of the upper and lower covers are evenly spaced between the upper and lower panels, and each adsorption cylinder is detachably connected to the upper and lower panels.

[0010] Furthermore, each of the adsorption cylinders is provided with a spiral baffle with a uniform pitch, and molecular sieve particles are filled in the space between the spiral baffles in each adsorption cylinder.

[0011] Furthermore, the lower panel surface has a circular groove for accommodating each adsorption cylinder at a corresponding position, and each circular groove has a set of through vent holes. A connecting sleeve is slidably connected to the upper panel at a corresponding position of each adsorption cylinder, and the connecting sleeve can be threadedly connected to the top of the adsorption cylinder.

[0012] Furthermore, a first sealing ring is provided in each of the circular grooves, and a third sealing ring is fitted on the outside of each of the connecting sleeves.

[0013] Furthermore, each of the connecting sleeves is fixedly connected to an annular spring seat at its top, and a tension spring surrounding the outside of the connecting sleeve is connected between the edge of each spring seat and the upper panel. Symmetrical flat grooves are provided on the outer wall of each adsorption cylinder.

[0014] Furthermore, each end of the adsorption cylinder is fixedly connected to a ventilated end cap, and a breathable mesh with fine mesh is placed between each ventilated end cap and the end of the adsorption cylinder.

[0015] Furthermore, a sponge layer is attached to both spiral surfaces of the spiral partition, and an elastic covering layer capable of inflation is inserted through the center of the spiral partition. A hollow inner support tube is sleeved inside the elastic covering layer, and multiple sets of expansion holes are evenly distributed on the surface of the inner support tube. The bottom ends of the inner support tube and the elastic covering layer pass through corresponding ventilation end caps.

[0016] Furthermore, each of the circular grooves is provided with a boss extending into the bottom end of the inner support tube at its center. A second sealing ring is fitted on the outside of each boss. Each boss has two vent holes that communicate with the inside of the inner support tube. The vent holes are divided into an air inlet end and an air return end. The bottom ends of the vent holes belonging to the air inlet end and the air return end of the several bosses are respectively connected to a gas distribution pipe.

[0017] Furthermore, the ends of the two air distribution pipes pass through the lower cover. An air pump is connected to the end of the air distribution pipe corresponding to the air inlet end, and a pressure regulating valve for regulating the air pressure in the inner support pipe is connected to the end of the air distribution pipe corresponding to the air return end. An air guide pipe is connected between the pressure regulating valve and the air pump.

[0018] Furthermore, a heat exchanger for regulating gas temperature is connected between the air pump and the gas distribution pipe, and heat-conducting grids are evenly distributed on the inner wall of each inner support pipe. A temperature sensor penetrating into the lower cover is provided on the outer wall of the lower cover.

[0019] In summary, compared with the prior art, the beneficial effects of the present invention are as follows: (1) By setting up multiple adsorption cylinders, the height and space occupied by the traditional pressure swing adsorption nitrogen generator are reduced, making it suitable for the small space of ship cabins. Compared with simply making the molecular sieve sleeve short and thick, this solution can use multiple adsorption cylinders to divert the gas, so that the molecular sieve in each adsorption cylinder can be fully and evenly used, avoiding the problem of uneven gas distribution in the molecular sieve in the short and thick molecular sieve sleeve.

[0020] (2) By using threaded detachable settings between each adsorption cylinder and the upper and lower panels, it is possible to independently disassemble and maintain a certain adsorption cylinder. When a certain adsorption cylinder is blocked or has other problems, it can be replaced locally, which facilitates inspection and maintenance and reduces maintenance costs.

[0021] (3) By setting up a spiral baffle, the gas flow rate is slowed down when passing through the molecular sieve, and the gas flow is further evenly distributed. The granular molecular sieve can fully fill the gaps of the spiral baffle, so that the gas can come into more full contact with the molecular sieve and increase the gas adsorption time. Thus, while reducing the volume, the nitrogen production efficiency can be effectively improved.

[0022] (4) The spiral baffle effectively restricts the granular molecular sieve from shaking up and down in the adsorption cylinder, and the sponge layer mitigates the collision of molecular sieve particles. At the same time, the elastic coating layer is inflated to fill the gaps between molecular sieves, thereby avoiding wear between molecular sieves, maintaining the good working condition of molecular sieves, and ensuring the service life of molecular sieves.

[0023] (5) By setting a heat exchanger, the temperature of the gas in the inner support tube can be adjusted, and the temperature can be transferred to the molecular sieve through the elastic coating layer. In a cold environment, the heat exchanger can keep the molecular sieve in the optimal working temperature range to ensure nitrogen production efficiency and nitrogen production effect. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the present patent.

[0025] Figure 2 This is a side view of the main structure of this patent.

[0026] Figure 3 for Figure 2 A three-dimensional sectional view at point AA.

[0027] Figure 4 for Figure 3 A magnified view of a section at point B.

[0028] Figure 5 This is a schematic diagram of the structure inside the lower cover in this patent.

[0029] Figure 6 This is a schematic diagram of the structure inside the adsorption cylinder in this patent.

[0030] Figure 7 This is a schematic diagram of the structure at the junction of the inner support tube and the elastic covering layer.

[0031] Figure 8 This is a schematic diagram of the lower panel.

[0032] Explanation of reference numerals in the attached drawings: Upper panel 10; Upper cover 11; Lower panel 12; Lower cover 13; Support rod 14; Adsorption cylinder 15; Circular groove 16; Vent hole 17; Vent end cap 18; Breathable mesh 19; First sealing ring 20; Second sealing ring 21; Third sealing ring 22; Connecting sleeve 23; Spring seat 24; Tension spring 25; Spiral partition 26; Sponge layer 27; Inner support tube 28; Elastic covering layer 29; Expansion vent 30; Heat-conducting grid 31; Vent hole 32; Air distribution pipe 33; Flat groove 34; Heat exchanger 35; Air pump 36; Air guide pipe 37; Pressure regulating valve 38; Boss 39; Temperature sensor 40. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] like Figures 1-8 As shown, a high-efficiency marine nitrogen generator includes an upper panel 10 and a lower panel 12. The top of the upper panel 10 is sealed and fixed with an upper cover 11, and the bottom of the lower panel 12 is sealed and fixed with a lower cover 13. Multiple support rods 14 are evenly distributed and fixedly connected between the edges of the upper panel 10 and the lower panel 12. Multiple circular grooves 16 are evenly spaced on the surface of each lower panel 12. An adsorption cylinder 15 with a molecular sieve is inserted into each circular groove 16. A connecting sleeve 23 is slidably connected to the upper panel 10 at the corresponding position of each adsorption cylinder 15. Each connecting sleeve 23 is threadedly connected to the top end of the corresponding adsorption cylinder 15. Both ends of each adsorption cylinder 15 are connected to the interior of the upper cover 11 and the lower cover 13.

[0035] By setting multiple adsorption cylinders 15, the height and space occupied by the traditional pressure swing adsorption nitrogen generator are reduced, making it suitable for the confined space of ship cabins. Compared with simply making the molecular sieve sleeve shorter and thicker, this solution can use multiple adsorption cylinders 15 to divert the gas, so that the molecular sieve in each adsorption cylinder 15 can be fully and evenly used, avoiding the problem of uneven gas distribution in the molecular sieve in the short and thick molecular sieve sleeve. At the same time, the threads of each adsorption cylinder 15 are detachable from the upper panel 10 and the lower panel 12, allowing for independent disassembly and maintenance of a single adsorption cylinder 15. If a blockage or other problem occurs in a particular adsorption cylinder 15, it can be replaced locally.

[0036] like Figures 1-8 As shown, each adsorption cylinder 15 is provided with a spiral baffle 26 with uniform pitch. The molecular sieve is in the form of particles and is filled in the space between the spiral baffles 26. Both ends of the adsorption cylinder 15 are fixedly connected with perforated venting end caps 18. A breathable mesh 19 with fine mesh is provided between the venting end caps 18 and the end of the adsorption cylinder 15.

[0037] By setting the spiral baffle 26, the gas flow rate is slowed down when passing through the molecular sieve, and the gas flow is further evenly distributed. The granular molecular sieve can fully fill the gaps of the spiral baffle 26, so that the gas can come into more full contact with the molecular sieve, increase the gas adsorption time, and thus improve the nitrogen production efficiency. In addition, the ventilation end cap 18 and the permeable mesh 19 can seal both ends of the adsorption cylinder 15, so as to ensure that the gas can flow in the adsorption cylinder 15 while preventing the molecular sieve particles from falling from both ends of the adsorption cylinder 15.

[0038] Furthermore, swaying is inevitable during ship navigation, and the spiral baffle 26 effectively restricts the granular molecular sieve from swaying up and down in the adsorption cylinder 15, thereby preventing wear between molecular sieves and maintaining their good working condition, thus ensuring the service life of the molecular sieve.

[0039] like Figures 1-8 As shown, each connecting sleeve 23 is fixedly connected to a ring-shaped spring seat 24 at its top end. A tension spring 25 is connected between the edge of each spring seat 24 and the upper panel 10, which surrounds the outside of the connecting sleeve 23. A set of flat grooves 34 is provided on the outer surface of each adsorption cylinder 15. A first sealing ring 20 that abuts against the edge of the vent end cap 18 is provided in each circular groove 16. A third sealing ring 22 for sealing the gap between the connecting sleeve 23 and the upper panel 10 is fitted on the outside of each connecting sleeve 23.

[0040] By setting a tension spring 25 and using the threaded connection between the adsorption cylinder 15 and the connecting sleeve 23, the connecting sleeve 23 rises after the adsorption cylinder 15 is screwed on, allowing the tension spring 25 to store elastic tension. The elasticity of the tension spring 25 is used to firmly press the adsorption cylinder 15 into the circular groove 16, ensuring a stable connection of the adsorption cylinder 15. The working gas pressure of pressure swing adsorption nitrogen generation is not too high, and the two ends of the adsorption cylinder 15 are open to allow gas to flow. Therefore, the tension spring 25 can be easily disassembled while its pressing force is sufficient to ensure sealing. The flat groove 34 allows operators to easily screw the adsorption cylinder 15 with tools such as pipe wrenches.

[0041] like Figures 1-8 As shown, ventilation holes 17 are respectively attached to the spiral surfaces on both sides of the spiral partition 26. An elastic covering layer 29 capable of inflation and expansion is provided in the center of the spiral partition 26. Multiple sets of expansion holes 30 are distributed on the inner support tube 28. A boss 39 extending into the bottom end of the inner support tube 28 is provided at the center of each circular groove 16. A second sealing ring 21 is sleeved on the outside of each boss 39. Two ventilation holes 32 that communicate with the inside of the inner support tube 28 are provided in each boss 39. The ventilation holes 32 are divided into an air inlet end and an air return end. The bottom ends of the ventilation holes 32 belonging to the air inlet end and the air return end of the several bosses 39 are respectively connected to the air distribution pipes 33.

[0042] By setting the sponge layer 27, the molecular sieve particles can be shock-absorbing and protected to prevent them from being bumped. At the same time, air can be injected into the inner support tube 28 to expand the elastic covering layer 29, which further fills the gaps between the molecular sieves, making the molecular sieves more tightly packed. This prevents the molecular sieves from rubbing and bumping against each other due to the swaying of the ship, thus ensuring the service life of the molecular sieves.

[0043] like Figures 1-8 As shown, the ends of the two gas distribution pipes 33 pass through the lower cover 13. An air pump 36 is connected to the end of the gas distribution pipe 33 corresponding to the air inlet end, and a pressure regulating valve 38 is connected to the end of the gas distribution pipe 33 corresponding to the air return end for regulating the air pressure inside the inner support pipe 28. A guide pipe 37 is connected between the pressure regulating valve 38 and the air pump 36. A heat exchanger 35 for regulating the gas temperature is connected between the air pump 36 and the gas distribution pipe 33. Heat-conducting grids 31 are evenly distributed on the inner wall of each inner support pipe 28. A temperature sensor 40 is installed on the outer wall of the lower cover 13 and penetrates into the lower cover 13.

[0044] The expansion of the elastic coating layer 29 is achieved by inflating it with air pump 36. The expansion degree is adjusted by regulating the air pressure in the inner support tube 28 and the elastic coating layer 29 through the pressure regulating valve 38. At the same time, the temperature of the gas in the inner support tube 28 can be adjusted by setting heat exchanger 35, so that the temperature is conducted to the molecular sieve through the elastic coating layer 29. In a cold environment, the heat exchanger 35 can keep the molecular sieve in the optimal operating temperature range to ensure nitrogen production efficiency and effect.

[0045] In this embodiment, during normal operation, the upper cover 11 and the lower cover 13 are respectively connected to the exhaust collection pipe and the air intake pipe, and the temperature sensor 40, the pressure regulating valve 38 and the heat exchanger 35 are connected to the power supply and control system. Air enters from the lower cover 13 and is diverted into each adsorption cylinder 15 through the vent 17. The gas flows through the molecular sieve in the adsorption cylinder 15 along the spiral direction of the spiral partition 26. The molecular sieve absorbs oxygen and other substances in the air and causes nitrogen to flow out, thus realizing nitrogen production.

[0046] During nitrogen production, the spiral baffle 26 restricts the vertical shaking and vibration of the molecular sieve, and is buffered by the vent 17. The air pump 36 works to fill air into each inner support tube 28 through the gas distribution pipe 33. The pressure regulating valve 38 generates resistance, causing the air in the inner support tube 28 to be trapped and forming air pressure, which causes the elastic coating layer 29 to expand. After the elastic coating layer 29 expands, it further fills the gaps between the molecular sieve particles, making the molecular sieve particles tightly packed together. This prevents the hull from shaking and causing friction and collision between the molecular sieve particles, which would affect their service life.

[0047] When the ship is sailing in a cold environment, in order to ensure that the molecular sieve maintains a stable and efficient nitrogen production state, it is necessary to control the temperature of the molecular sieve. The temperature sensor 40 can detect the intake temperature inside the lower cover 13 and feed it back to the control system in real time. The control system automatically controls the heat exchanger 35 to adjust to a suitable temperature. Then, the gas delivered by the gas pump 36 enters each inner support tube 28 and the elastic coating layer 29 through the gas distribution pipe 33 after the temperature is adjusted by the heat exchanger 35. Since the elastic coating layer 29 is in direct contact with the molecular sieve particles, it can transfer heat to the molecular sieve to maintain its optimal operating temperature.

[0048] Ships navigate through diverse environments, and the marine environment is highly variable, resulting in significant temperature variations. By employing the aforementioned method of constant-temperature control of the molecular sieve, the impact of temperature changes on the thermal expansion and contraction of the elastic coating layer 29 can be mitigated to some extent, ensuring the expansion state of 29. Furthermore, the gas within the elastic coating layer 29 is slowly returned to the air pump 36 via the adaptive dynamic control of the pressure regulating valve 38, achieving airflow circulation. By automatically and dynamically adjusting the pressure regulating valve 38, the influence of thermal expansion and contraction on the gas expansion rate can also be avoided, ensuring that the elastic coating layer 29 always remains in an expanded state.

[0049] After prolonged operation, the molecular sieve will be consumed until it is no longer sufficient to maintain high nitrogen production efficiency. At this time, the operator can first remove the lower panel 12 and the lower cover 13 from the support rod 14. Since the lower end of the adsorption cylinder 15 is inserted into the lower cover 13, the bottom end of the adsorption cylinder 15 can be directly detached from the lower panel 12 when removing the lower panel 12 and the lower cover 13.

[0050] Then, the tension spring 25 fully releases its elasticity, and the operator can use tools such as pipe wrenches to unscrew one or all of the adsorption cylinders 15 from the connecting sleeve 23. When replacing a new adsorption cylinder 15, the adsorption cylinder 15 is screwed back into the connecting sleeve 23 until it reaches its limit position. Then, the lower panel 12 and the lower cover 13 are reinstalled to the bottom of the support rod 14, and each adsorption cylinder 15 is inserted into the circular groove 16. Then, the operator uses pipe wrenches and other parts to screw the adsorption cylinder 15 in the opposite direction again, so that the connecting sleeve 23 is gradually pushed upward during this process. The tension spring 25 stores elastic potential energy to firmly and stably press the adsorption cylinder 15 into the circular groove 16. The first sealing ring 20, the second sealing ring 21, and the third sealing ring 22 can maintain the airtightness between the adsorption cylinder 15 and the upper panel 10 and the lower panel 12 to prevent gas leakage during operation.

[0051] Because the adsorption cylinders 15 are evenly spaced, space is reserved between each adsorption cylinder 15 for easy screwing of the adsorption cylinders 15 with pipe wrenches. The arrangement of the adsorption cylinders 15 shown in the attached figure is only one arrangement and is not limited to this arrangement. For example, the adsorption cylinders 15 can be arranged in a single row or a double row with intervals.

[0052] The heat exchanger 35, air pump 36, pressure regulating valve 38 and temperature sensor 40 mentioned above are mature existing technologies. The structures in the attached drawings are only for illustration and will not be described in detail here.

[0053] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0054] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0055] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A high-efficiency marine nitrogen generator, characterized in that, The high-efficiency marine nitrogen generator includes: The upper panel (10) and the lower panel (12) are respectively sealed and connected to an upper cover (11) and a lower cover (13), and multiple support rods (14) are fixedly connected between the upper panel (10) and the lower panel (12). A plurality of adsorption cylinders (15) that communicate with the interior of the upper cover (11) and the lower cover (13) are evenly spaced between the upper panel (10) and the lower panel (12). Each adsorption cylinder (15) is detachably connected to the upper panel (10) and the lower panel (12). Each of the adsorption cylinders (15) is provided with a spiral partition (26) with a uniform pitch, and molecular sieve particles are filled in the space between the spiral partitions (26) in each adsorption cylinder (15).

2. The high-efficiency marine nitrogen generator according to claim 1, characterized in that, The lower panel (12) has a circular groove (16) for accommodating each adsorption cylinder (15) at a corresponding position on its surface. Each circular groove (16) has a set of through ventilation holes (17). A connecting sleeve (23) is slidably connected to the upper panel (10) at a corresponding position on each adsorption cylinder (15). The connecting sleeve (23) can be threadedly connected to the top of the adsorption cylinder (15).

3. The high-efficiency marine nitrogen generator according to claim 2, characterized in that, Each of the circular grooves (16) is provided with a first sealing ring (20), and each of the connecting sleeves (23) is provided with a third sealing ring (22) on the outside.

4. The high-efficiency marine nitrogen generator according to claim 2, characterized in that, Each of the connecting sleeves (23) is fixedly connected to the top of an annular spring seat (24), and a tension spring (25) is connected between the edge of each spring seat (24) and the upper panel (10) and surrounds the outside of the connecting sleeve (23). Symmetrical flat grooves (34) are provided on the outer wall of each adsorption cylinder (15).

5. The high-efficiency marine nitrogen generator according to claim 2, characterized in that, The adsorption cylinder (15) is fixedly connected to both ends with ventilation end caps (18), and a breathable mesh (19) with fine mesh is placed between each ventilation end cap (18) and the end of the adsorption cylinder (15).

6. The high-efficiency marine nitrogen generator according to claim 2, characterized in that, A sponge layer (27) is attached to both sides of the spiral partition (26). An elastic covering layer (29) capable of being inflated is inserted through the center of the spiral partition (26). A hollow inner support tube (28) is sleeved inside the elastic covering layer (29). Multiple sets of expansion holes (30) are evenly distributed on the surface of the inner support tube (28). The bottom ends of the inner support tube (28) and the elastic covering layer (29) pass through the corresponding ventilation end cap (18).

7. The high-efficiency marine nitrogen generator according to claim 6, characterized in that, At the center of each of the circular grooves (16) is a boss (39) that extends into the bottom of the inner support tube (28). A second sealing ring (21) is fitted on the outside of each boss (39). Two vent holes (32) are opened in each boss (39) that communicate with the inside of the inner support tube (28). The vent holes (32) are divided into an air inlet end and an air return end. The bottom ends of the vent holes (32) belonging to the air inlet end and the air return end of the several bosses (39) are respectively connected to the air distribution pipes (33).

8. The high-efficiency marine nitrogen generator according to claim 7, characterized in that, The ends of the two air distribution pipes (33) pass through the lower cover (13). An air pump (36) is connected to the end of the air distribution pipe (33) corresponding to the air inlet end. A pressure regulating valve (38) for regulating the air pressure in the inner support pipe (28) is connected to the end of the air distribution pipe (33) corresponding to the air return end. An air guide pipe (37) is connected between the pressure regulating valve (38) and the air pump (36).

9. The high-efficiency marine nitrogen generator according to claim 8, characterized in that, A heat exchanger (35) for regulating gas temperature is provided between the air pump (36) and the gas distribution pipe (33), and heat-conducting grids (31) are evenly distributed on the inner wall of each inner support pipe (28).

10. The high-efficiency marine nitrogen generator according to claim 9, characterized in that, A temperature sensor (40) is provided on the outer wall of the lower cover (13) and penetrates into the lower cover (13).

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