Membrane separation nitrogen generator capable of precise temperature control

Abstract

The utility model belongs to the field of nitrogen making machine, specifically is a kind of membrane separation nitrogen making machine of precision temperature control, including gas tank;The top of gas tank is connected with L-shaped pipe through, one end of L-shaped pipe is connected with two filter tanks, and one of filter tanks is connected with U-shaped pipe through, one end of U-shaped pipe is connected with heating pipe;The inner wall of heating pipe is provided with graphene coating for heating gas, and the top surface of heating pipe is provided with equipment box;The structural design of the combination of graphene coating set on the inner wall of heating pipe and temperature control module on equipment box realizes the precision, efficient control of the gas temperature before entering membrane group, solves the technical problem that water vapor condensation in membrane separation process is caused by environmental temperature fluctuation and affects nitrogen purity, the stability and high efficiency of gas heating are guaranteed by the rapid heating and uniform heat conduction characteristics of graphene coating, improves the efficiency and product purity of membrane separation nitrogen making.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen generators, specifically a membrane separation nitrogen generator capable of precise temperature control. Background Technology

[0002] A membrane nitrogen generator is an industrial device that separates nitrogen from the air using physical methods. Its core principle is to use the difference in permeation rate of different gas molecules through a hollow fiber membrane to achieve oxygen-nitrogen separation. After compressed air enters the membrane module, small molecules such as oxygen, carbon dioxide, and water vapor are preferentially discharged through the fiber membrane wall due to their fast permeation rate, while nitrogen molecules are enriched on the other side of the membrane due to their slow permeation rate, resulting in a high concentration of nitrogen output.

[0003] In existing technologies, during membrane separation nitrogen generation, the air undergoes continuous compression and filtration, and is affected by ambient temperature. This results in water vapor condensation during membrane separation, which affects the purity of the nitrogen generated. Additionally, the air contains trace amounts of oily impurities, making the filtration device difficult to clean and maintain after continuous filtration. Therefore, this paper proposes a membrane separation nitrogen generator capable of precise temperature control to address these issues. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, during membrane nitrogen generation, the air undergoes continuous compression and filtration, and is affected by the ambient temperature. This results in water vapor condensation during membrane separation, which affects the purity of nitrogen generated by membrane separation. At the same time, the air contains trace amounts of oily impurities, which, after continuous filtration, makes cleaning and maintenance of the filter device difficult. This invention proposes a membrane nitrogen generator capable of precise temperature control.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The membrane separation nitrogen generator with precise temperature control described in this utility model includes a gas tank; an L-shaped tube is connected through the top of the gas tank, and two filter tanks are connected through one end of the L-shaped tube. One of the filter tanks is connected through a U-shaped tube, and a heating tube is connected through one end of the U-shaped tube. The inner wall of the heating tube is provided with a graphene coating for heating the gas. An equipment box is provided on the top surface of the heating tube. A battery module is provided inside the equipment box, and a temperature control module is provided on the surface. The heating tube is provided with a conductive column electrically connected to the graphene coating, and the temperature control module is electrically connected to the conductive column through a wire to regulate the heating temperature of the graphene coating. A carbon tank is connected through the heating tube, and a membrane group for separating nitrogen is connected through the carbon tank.

[0006] Preferably, the surface of the carbon canister is provided with a plurality of arc-shaped grooves, an arc-shaped plate is movably connected inside the arc-shaped grooves, and an activated carbon filter plate is provided on the side of the arc-shaped plate.

[0007] Preferably, the activated carbon filter plate has an elastic sealing ring at its edge, and the diameter of the activated carbon filter plate is the same as the inner diameter of the carbon canister.

[0008] Preferably, a buckle is provided on the surface of one end of the arc-shaped plate, and a slot adapted to the buckle is provided on the surface of one end of the arc-shaped groove.

[0009] Preferably, there are two conductive pillars, which are respectively disposed at the top of both ends of the heating tube.

[0010] Preferably, the carbon canister is connected to the bottom of one end of the heating tube, and the membrane group is connected to one side of the top of the carbon canister.

[0011] The advantages of this utility model are: 1. This utility model achieves precise and efficient control of the gas temperature before it enters the membrane group by combining the graphene coating on the inner wall of the heating tube with the temperature control module on the equipment box. It solves the technical problem that water vapor condensation during membrane separation caused by ambient temperature fluctuations affects the purity of nitrogen. Through the rapid heating and uniform thermal conductivity of the graphene coating, the stability and efficiency of gas heating are ensured, thereby improving the efficiency and purity of nitrogen production by membrane separation. 2. This utility model, through its structural design of several arc-shaped grooves on the surface of the carbon canister and an arc-shaped plate with an activated carbon filter plate that can be movably inserted into them, achieves multi-stage adsorption filtration of oily impurities in the gas. It also makes cleaning and maintenance of the activated carbon filter plate convenient and efficient, solving the technical problem of difficult maintenance caused by the fixed structure of traditional filtration devices. The pull-out design of the arc-shaped plate facilitates quick removal of the activated carbon filter plate from the carbon canister for cleaning or replacement, ensuring continuous and efficient filtration and improving the maintainability and operational stability of the equipment. The matching structure of the buckle at one end of the arc-shaped plate and the groove at the end of the arc-shaped groove ensures reliable fixation of the activated carbon filter plate in its working position, guaranteeing the sealing of the filtration process. The elastic sealing ring on the edge of the activated carbon filter plate further enhances the sealing effect between it and the inner wall of the carbon canister, preventing gas short-circuiting and ensuring the effective removal of oily impurities, thereby further improving the purity of nitrogen production. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the membrane grouping structure of this utility model; Figure 3 This is a schematic diagram of the carbon canister structure of this utility model; Figure 4 This is a schematic diagram of the heating tube structure of this utility model.

[0014] In the diagram: 1. Gas tank; 2. L-shaped tube; 3. Filter tank; 4. U-shaped tube; 5. Heating tube; 6. Graphene coating; 7. Conductive column; 8. Equipment box; 9. Battery module; 10. Temperature control module; 11. Carbon tank; 12. Membrane group; 13. Arc groove; 14. Arc plate; 15. Activated carbon filter plate; 16. Elastic sealing ring; 17. Buckle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] Please see Figures 1-4 As shown, a membrane separation nitrogen generator capable of precise temperature control includes a gas tank 1; an L-shaped tube 2 is connected through the top of the gas tank 1, and two filter tanks 3 are connected through one end of the L-shaped tube 2, one of which is connected through a U-shaped tube 4, and a heating tube 5 is connected through one end of the U-shaped tube 4; a graphene coating 6 for heating the gas is provided on the inner wall of the heating tube 5, an equipment box 8 is provided on the top surface of the heating tube 5, a battery module 9 is provided inside the equipment box 8 and a temperature control module 10 is provided on the surface, a conductive column 7 electrically connected to the graphene coating 6 is provided on the heating tube 5, and the temperature control module 10 is electrically connected to the conductive column 7 through a wire to regulate the heating temperature of the graphene coating 6, a carbon canister 11 is connected through the heating tube 5, and a membrane group 12 for separating nitrogen is connected through the carbon canister 11. During operation, an L-shaped tube 2 is connected to the top of the gas tank 1 to guide the gas flow. One end of the L-shaped tube 2 is connected to two filter tanks 3 to perform preliminary filtration of the gas to remove larger particulate impurities. The gas then enters the heating tube 5 through a U-shaped tube 4 on the side of one of the filter tanks 3. The heating tube 5 is a key component for precise temperature control; its inner wall is coated with a graphene coating 6, which generates heat when current passes through it. A battery module 9 is installed in the device box 8 on the top of the heating tube 5 to power the system. A temperature control module 10 on its surface is connected to a conductive post 7 on the heating tube 5 via wires. The conductive post 7 is electrically connected to the graphene coating 6, thus forming a closed-loop control system. This allows the temperature control module 10 to precisely adjust the heating power of the graphene coating 6, achieving rapid and uniform heating of the flowing gas. After being heated and stabilized, the gas then enters the carbon canister 11 through the heating tube 5 for deep purification. Finally, the fully pretreated gas is sent to the membrane module 12 connected to the top of the carbon canister 11 for high-efficiency separation of nitrogen and oxygen. By integrating the heating tube 5 and its precise temperature control system between the filter canister 3 and the carbon canister 11, the gas entering the membrane module 12 is ensured to be at the optimal temperature, effectively preventing the membrane module from generating condensate due to temperature fluctuations or excessively low temperatures. This ensures and improves the nitrogen separation efficiency and product purity.

[0017] Furthermore, the surface of the carbon canister 11 is provided with several arc-shaped grooves 13, and an arc-shaped plate 14 is movably connected inside the arc-shaped grooves 13. An activated carbon filter plate 15 is provided on the side of the arc-shaped plate 14. During operation, several arc-shaped grooves 13 are formed on the surface of the carbon canister 11 from top to bottom. An arc-shaped plate 14 is movably inserted into each arc-shaped groove 13, and an activated carbon filter plate 15 is fixedly installed on the side of the arc-shaped plate 14. The diameter of these activated carbon filter plates 15 matches the inner diameter of the carbon canister 11. When the arc-shaped plate 14 is pushed into place, multiple activated carbon filter plates 15 form a multi-stage adsorption and filtration layer inside the carbon canister 11 to efficiently remove oily impurities from the gas.

[0018] Furthermore, an elastic sealing ring 16 is provided on the edge of the surface of the activated carbon filter plate 15, and the diameter of the activated carbon filter plate 15 is the same as the inner diameter of the carbon canister 11. During operation, to ensure the filtration effect of the activated carbon filter plate 15, an elastic sealing ring 16 is provided at the edge of its circular surface. When the arc-shaped plate 14 containing the activated carbon filter plate 15 is fully pushed into the arc-shaped groove 13 of the carbon canister 11, the elastic sealing ring 16 will fit tightly against the inner wall of the carbon canister 11 under pressure.

[0019] Furthermore, a buckle 17 is provided on the surface of one end of the arc plate 14, and a slot adapted to the buckle 17 is provided on the surface of one end of the arc groove 13. During operation, in order to prevent the arc plate 14 from accidentally slipping off during equipment operation, a buckle 17 is provided on the surface of the arc plate 14 located outside the carbon canister 11, and a groove matching its shape is machined on the end face corresponding to the arc groove 13.

[0020] Furthermore, there are two conductive posts 7, which are respectively located at the top of both ends of the heating tube 5; During operation, the conductive pillars 7 are arranged in two pairs, located at the top of both ends of the heating tube 5. This symmetrical arrangement introduces current into the graphene coating 6.

[0021] Furthermore, the carbon canister 11 is connected to the bottom of one end of the heating tube 5, and the membrane group 12 is connected to one side of the top of the carbon canister 11. During operation, the carbon canister 11 is connected to the bottom of one end of the heating tube 5, while the membrane module 12 is connected to one side of the top of the carbon canister 11. This connection method defines the flow path of the gas flowing out from the bottom of the heating tube 5, passing through the carbon canister 11 from bottom to top, and finally entering the membrane module 12 from its top.

[0022] Working principle: When the nitrogen generator is working, the gas enters the gas tank 1 through the L-shaped tube 2 and then enters the two filter tanks 3 for preliminary dust removal and filtration. Subsequently, the gas enters the heating tube 5 through the U-shaped tube 4. The graphene coating 6 on the inner wall of the heating tube 5 is energized and heated under the precise control of the temperature control module 10, which heats the gas quickly and evenly to eliminate the influence of temperature fluctuations on the separation efficiency. The heated gas enters the carbon tank 11 from the bottom of the heating tube 5 and penetrates multiple activated carbon filter plates 15 from bottom to top to adsorb and remove oily impurities. Finally, the purified and temperature-controlled gas enters the membrane group 12 from the top of the carbon tank 11. The difference in the permeation rate of the gas in the membrane is used to achieve efficient separation of nitrogen and oxygen, thereby obtaining high-purity nitrogen.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A membrane separation nitrogen generator capable of precise temperature control, characterized in that: Includes a gas tank (1); the top of the gas tank (1) is connected to an L-shaped tube (2), one end of the L-shaped tube (2) is connected to two filter tanks (3), one of the filter tanks (3) is connected to a U-shaped tube (4), one end of the U-shaped tube (4) is connected to a heating tube (5). The inner wall of the heating tube (5) is provided with a graphene coating (6) for heating gas. The top surface of the heating tube (5) is provided with a device box (8). The inside of the device box (8) is provided with a battery module (9) and the surface is provided with a temperature control module (10). The heating tube (5) is provided with a conductive post (7) electrically connected to the graphene coating (6), and the temperature control module (10) is electrically connected to the conductive post (7) through a wire to regulate the heating temperature of the graphene coating (6). The heating tube (5) is connected through a carbon canister (11), and the carbon canister (11) is connected through a membrane group (12) for separating nitrogen gas.

2. The membrane separation nitrogen generator capable of precise temperature control according to claim 1, characterized in that: The surface of the carbon canister (11) is provided with several arc-shaped grooves (13), and an arc-shaped plate (14) is movably connected inside the arc-shaped grooves (13). An activated carbon filter plate (15) is provided on the side of the arc-shaped plate (14).

3. The membrane separation nitrogen generator capable of precise temperature control according to claim 2, characterized in that: An elastic sealing ring (16) is provided on the edge of the surface of the activated carbon filter plate (15), and the diameter of the activated carbon filter plate (15) is the same as the inner diameter of the carbon canister (11).

4. A membrane separation nitrogen generator capable of precise temperature control according to claim 2, characterized in that: The surface of one end of the arc plate (14) is provided with a buckle (17), and the surface of one end of the arc groove (13) is provided with a slot that matches the buckle (17).

5. A membrane separation nitrogen generator capable of precise temperature control according to claim 1, characterized in that: The number of conductive pillars (7) is two, and they are respectively set at the top of both ends of the heating tube (5).

6. A membrane separation nitrogen generator capable of precise temperature control according to claim 1, characterized in that: The carbon canister (11) is connected to the bottom of one end of the heating tube (5), and the membrane group (12) is connected to one side of the top of the carbon canister (11).

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