A VPSA oxygen production equipment pressure equalization tank structure optimization device

Abstract

The utility model relates to VPSA oxygen making equipment technical field, especially in kind of VPSA oxygen making equipment pressure equalizing tank structure optimization device, including pressure equalizing tank body, the upper end middle part of pressure equalizing tank body is fixedly connected with air inlet pipe and exhaust pipe respectively in lower end middle part, the upper surface one side of pressure equalizing tank body is provided with the access cover, be equipped with the cavity in pressure equalizing tank body, the inner tank wall of pressure equalizing tank body is fixedly connected with quartz sand coating, the lower tank wall middle part of pressure equalizing tank body is fixedly connected with pressure equalizing device, the outside all round of pressure equalizing tank body is fixedly connected with support leg. The utility model relates to a kind of VPSA oxygen making equipment pressure equalizing tank structure optimization device, by circular tank body structure and the multistage pressure equalizing of pressure equalizing device, flow prevention static electricity, wear-resistant coating design, realize gas efficient concentrated inflow and uniform stable outflow, improve pressure equalizing efficiency, improve oxygen making quality and equipment safety simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of VPSA oxygen generation equipment, and in particular to a device for optimizing the structure of the equalizing tank in VPSA oxygen generation equipment. Background Technology

[0002] In VPSA oxygen generation technology, the equalizing tank is a key component. Its function is to balance the gas pressure between adsorption towers, reduce energy loss, and improve oxygen generation efficiency. Currently, the equalizing tanks of traditional VPSA oxygen generation equipment have many shortcomings in practical applications. On the one hand, the structural design of existing equalizing tanks is not reasonable enough. For example, the layout of the inlet and outlet pipes is often not aligned with the central axis of the tank, which can easily cause airflow deviation during gas inflow and outflow, resulting in uneven local pressure and affecting the equalization effect. On the other hand, the tank shape of equalizing tanks is mostly cylindrical, which can easily form dead zones during gas diffusion. The corner area is not conducive to uniform gas distribution, thus reducing the pressure equalization efficiency. In addition, the pressure equalization device inside the traditional pressure equalization tank is relatively simple in design and lacks an effective multi-stage pressure equalization structure, making it difficult to fully equalize and rectify the gas. At the same time, there are no good anti-static measures, and the accumulation of static electricity generated during gas flow may affect the safe operation of the equipment and the quality of the gas. Moreover, the wear resistance of the inner wall of the existing pressure equalization tank is poor, and it is easily worn by gas flow during long-term use, affecting the service life of the equipment. Therefore, it is necessary to design a pressure equalization tank structure optimization device for VPSA oxygen production equipment to solve the above problems. Utility Model Content

[0003] The main purpose of this invention is to provide a device for optimizing the structure of the equalizing tank in a VPSA oxygen generator, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A device for optimizing the structure of a pressure equalization tank in a VPSA oxygen generator includes a pressure equalization tank body. An air inlet pipe and an exhaust pipe are fixedly connected to the middle of the upper and lower ends of the pressure equalization tank body, respectively. A maintenance cover is provided on one side of the upper surface of the pressure equalization tank body. A cavity is provided inside the pressure equalization tank body. A quartz sand coating is fixedly connected to the inner wall of the pressure equalization tank body. A pressure equalization device is fixedly connected to the middle of the lower wall of the pressure equalization tank body. Support legs are fixedly connected to all four sides of the outer side of the pressure equalization tank body.

[0006] Preferably, the pressure equalization device includes a conical cylinder, the outer surface of which is fixedly connected with multiple outer bands, and the inner wall of which is fixedly connected with a graphene-modified layer. From top to bottom, the inner wall of the conical cylinder is sequentially fixedly connected with a first airflow disk, a second airflow disk, a third airflow disk, a fourth airflow disk, and a fifth airflow disk. An airflow mesh is fixedly connected to the surfaces of the conical cylinder, the second airflow disk, the third airflow disk, the fourth airflow disk, and the fifth airflow disk. An intermediate rod is interwoven and fixedly connected to the upper middle portion of the conical cylinder, the upper middle portion of the second airflow disk, the upper middle portion of the third airflow disk, the upper middle portion of the fourth airflow disk, and the upper middle portion of the fifth airflow disk. The conical cylinder is fixedly connected inside the pressure equalization tank.

[0007] Preferably, the gas flow mesh has a honeycomb structure, and the mesh diameter decreases gradually from top to bottom along the gas flow direction.

[0008] Preferably, the central axis of the intake pipe coincides with the central axis of the pressure equalization tank, and the lower end of the intake pipe extends into the pressure equalization tank; the central axis of the exhaust pipe coincides with the central axis of the pressure equalization tank, and the upper end of the exhaust pipe extends into the pressure equalization tank; the pressure equalization tank has an elliptical structure.

[0009] Preferably, the outer bands are evenly distributed longitudinally along the outer surface of the conical cylinder, and the spacing between adjacent outer bands is 100mm, and the width of the outer bands is 30mm.

[0010] Preferably, the diameters of the first airflow disk, the second airflow disk, the third airflow disk, the fourth airflow disk, and the fifth airflow disk decrease sequentially from top to bottom.

[0011] Preferably, the conical cylinder has a frustum-shaped structure that is wider at the top and narrower at the bottom, with the diameter of the upper opening being larger than the diameter of the lower opening, and the central axis of the conical cylinder coinciding with the central axis of the pressure equalization tank.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the air inlet pipe and the exhaust pipe are aligned with the central axis of the pressure equalization tank, and the lower end of the air inlet pipe and the upper end of the exhaust pipe extend into the pressure equalization tank, so that the gas flows vertically along the central axis of the pressure equalization tank, avoiding local pressure unevenness caused by airflow deviation. Compared with the cylindrical shape, the elliptical pressure equalization tank structure reduces dead zone areas, promotes uniform gas distribution, shortens the gas flow path, reduces energy loss and turbulence generation, realizes efficient and concentrated gas inflow and uniform and stable outflow, and improves pressure equalization efficiency.

[0014] 2. In this utility model, the outer surface of the conical cylinder of the pressure equalization device is longitudinally and evenly distributed with outer bands to initially guide and disperse the gas flow. The graphene-modified layer on the inner cylinder wall improves the airflow characteristics and prevents static electricity, avoiding the accumulation of static electricity that affects the gas quality. The airflow disks with decreasing diameters inside the conical cylinder, together with the honeycomb-shaped surface and the gradient decreasing mesh diameter along the airflow direction of the airflow mesh, form a multi-stage pressure equalization structure, which equalizes and rectifies the gas flow step by step, making the gas pressure uniform and the flow stable, thus improving the gas treatment quality. The quartz sand coating inside the pressure equalization tank plays a role in wear resistance and stabilizing the gas flow environment, thereby improving the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a pressure equalization tank structure optimization device for VPSA oxygen production equipment according to this utility model;

[0016] Figure 2 This is a partial cross-sectional schematic diagram of the structure optimization device for the pressure equalization tank of a VPSA oxygen generator according to this utility model;

[0017] Figure 3 This is a schematic diagram of the disassembled structure of the pressure equalization device of the pressure equalization tank structure optimization device for VPSA oxygen generator according to this utility model;

[0018] Figure 4 This is a detailed enlarged structural diagram of section A of the pressure equalization tank structure optimization device for VPSA oxygen generator according to this utility model;

[0019] Figure 5 This is a detailed enlarged structural diagram of section B of the VPSA oxygen generator pressure equalization tank structure optimization device of this utility model.

[0020] In the diagram: 1. Pressure equalizing tank; 2. Inlet pipe; 3. Inspection cover; 4. Support leg; 5. Exhaust pipe; 6. Quartz sand coating; 7. Pressure equalizing device; 8. Cavity; 71. Conical cylinder; 72. First airflow disc; 73. Second airflow disc; 74. Third airflow disc; 75. Fourth airflow disc; 76. Fifth airflow disc; 77. Airflow mesh; 78. Outer band; 79. Graphene modified layer; 710. Intermediate rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-5 This utility model provides a technical solution:

[0025] A device for optimizing the structure of a pressure equalization tank in a VPSA oxygen generator includes a pressure equalization tank body 1. An air inlet pipe 2 and an exhaust pipe 5 are fixedly connected to the middle of the upper and lower ends of the pressure equalization tank body 1, respectively. A maintenance cover 3 is provided on one side of the upper surface of the pressure equalization tank body 1. A cavity 8 is provided inside the pressure equalization tank body 1. A quartz sand coating 6 is fixedly connected to the inner wall of the pressure equalization tank body 1. A pressure equalization device 7 is fixedly connected to the middle of the lower wall of the pressure equalization tank body 1. Support legs 4 are fixedly connected to all four sides of the outer side of the pressure equalization tank body 1.

[0026] In this embodiment, the pressure equalization device 7 includes a conical cylinder 71. Multiple outer bands 78 are fixedly connected to the outer surface of the conical cylinder 71. A graphene-modified layer 79 is fixedly connected to the inner wall of the conical cylinder 71. From top to bottom, a first airflow disk 72, a second airflow disk 73, a third airflow disk 74, a fourth airflow disk 75, and a fifth airflow disk 76 are sequentially fixedly connected to the inner wall of the conical cylinder 71. An airflow mesh 77 is fixedly connected to the surfaces of the conical cylinder 71, the second airflow disk 73, the third airflow disk 74, the fourth airflow disk 75, and the fifth airflow disk 76. An upper middle portion of the conical cylinder 71, the upper middle portion of the second airflow disk 73, the upper middle portion of the third airflow disk 74, the upper middle portion of the fourth airflow disk 75, and the fifth airflow disk 76 are connected to the first airflow disk 72, the second airflow disk 73, the third airflow disk 74, the fourth airflow disk 75, and the fifth airflow disk 76. A central rod 710 is fixedly connected to the upper middle part of the five-flow disc 76. The conical cylinder 71 is fixedly connected inside the pressure equalization tank 1. The flow nets 77 are all honeycomb structure. The diameter of the mesh of the flow net 77 decreases gradually from top to bottom along the gas flow direction. The outer bands 78 are evenly distributed longitudinally along the outer surface of the conical cylinder 71, and the distance between adjacent outer bands 78 is 100mm. The width of the outer bands 78 is 30mm. The diameters of the first flow disc 72, the second flow disc 73, the third flow disc 74, the fourth flow disc 75 and the fifth flow disc 76 decrease sequentially from top to bottom. The conical cylinder 71 has a frustum-shaped structure that is wider at the top and narrower at the bottom. The diameter of its upper opening is larger than the diameter of its lower opening, and the central axis of the conical cylinder 71 coincides with the central axis of the pressure equalization tank 1.

[0027] Through the above scheme: gas enters the equalizing device 7, whose conical cylinder 71 is frustum-shaped and coaxial with the equalizing tank 1. An outer band 78, evenly distributed longitudinally on the outer surface with a spacing of 100mm and a width of 30mm, initially guides and disperses the gas. A graphene-modified layer 79 on the inner wall improves airflow characteristics and provides antistatic properties. The conical cylinder 71 contains a first airflow disk 72, a second airflow disk 73, a third airflow disk 74, a fourth airflow disk 75, and a fifth airflow disk 76 with decreasing diameters. A honeycomb-shaped airflow mesh 77 is provided on the surface of the conical cylinder 71 and its surface, with the mesh diameter decreasing gradually along the airflow direction, in conjunction with the intermediate rod 71. The structure is stable, allowing the gas to be uniformly rectified and regulated step by step, and finally output through the exhaust pipe 5, which is coaxial with the equalization tank 1 and extends into the equalization tank 1 at the top. This structure achieves efficient airflow concentration by coaxially designing the inlet pipe 2, exhaust pipe 5, and conical cylinder 71 to coincide with the central axis of the equalization tank 1. The gradient mesh 77 and the decreasing first airflow disk 72, second airflow disk 73, third airflow disk 74, fourth airflow disk 75 and fifth airflow disk 76 form a multi-stage equalization. The outer band 78 enhances the flow guidance, and the graphene modified layer 79 prevents static electricity, which significantly improves the equalization efficiency and gas stability, and improves the oxygen production quality.

[0028] In this embodiment, the central axis of the intake pipe 2 coincides with the central axis of the pressure equalization tank 1, and the lower end of the intake pipe 2 extends into the pressure equalization tank 1. The central axis of the exhaust pipe 5 coincides with the central axis of the pressure equalization tank 1, and the upper end of the exhaust pipe 5 extends into the pressure equalization tank 1. The pressure equalization tank 1 has an elliptical structure.

[0029] Through the above scheme: gas enters the equalizing tank 1 from the inlet pipe 2 connected to the output end of the oxygen generator. Because the central axis of the inlet pipe 2 coincides with the central axis of the elliptical equalizing tank 1 and its lower end extends to the equalizing tank 1, the gas can flow vertically downward along the central axis of the tank, avoiding local pressure unevenness caused by airflow deviation. When the gas diffuses in the equalizing tank 1, the elliptical structure reduces dead zones compared to the cylindrical structure, promoting uniform gas distribution. The treated gas is discharged through the exhaust pipe 5, which coincides with the central axis of the equalizing tank 1 and its upper end extends to the equalizing tank 1. This coaxial design ensures that the inlet and exhaust paths are along the same central axis, shortening the gas flow path and reducing energy loss and turbulence generation. Through the coaxial design of the inlet pipe 2, exhaust pipe 5, and equalizing tank 1 with their central axes coincident and the structural optimization of the elliptical equalizing tank 1, this scheme achieves efficient and concentrated gas inflow and uniform and stable outflow, reduces airflow resistance and pressure fluctuations, and improves equalization efficiency and gas treatment quality.

[0030] It should be noted that this utility model is a structural optimization device for the equalization tank of a VPSA oxygen generator. The inlet pipe 2 is connected to the gas output end of the oxygen generator, and the exhaust pipe 5 is connected to the subsequent gas treatment equipment. Gas enters the cavity 8 inside the equalization tank 1 from the inlet pipe 2. Since the central axis of the inlet pipe 2 coincides with the central axis of the equalization tank 1 and its lower end extends into the tank, the gas can enter the equalization tank 1 in a more concentrated manner. The equalization tank 1 has an elliptical structure, which is beneficial for gas equalization. The tank body 1 has a uniformly distributed quartz sand coating 6 on the inner wall, which provides a certain degree of wear resistance and stabilizes the gas flow environment. As the gas flows downwards, it enters the pressure equalization device 7. The conical cylinder 71 of the pressure equalization device 7 has a frustum-shaped structure that is wider at the top and narrower at the bottom, with its central axis coinciding with the central axis of the tank body. Its outer surface has longitudinally distributed outer bands 78 with a spacing of 100mm and a width of 30mm, which can provide initial guidance and dispersion for the gas. The graphene-modified layer 79 on the inner wall of the conical cylinder 71 not only... It helps improve the flow characteristics of the gas and also plays an anti-static role, avoiding the accumulation of static electricity generated during the gas flow process from affecting the operation of the equipment or the gas quality. The conical cylinder 71 is provided with a first airflow disk 72, a second airflow disk 73, a third airflow disk 74, a fourth airflow disk 75 and a fifth airflow disk 76 with decreasing diameter from top to bottom. The surfaces of them and the surface of the conical cylinder 71 are fixedly connected with a honeycomb structure with a mesh diameter that decreases from top to bottom along the gas flow direction. The intermediate rod 710 is inserted and fixedly connected to the middle of the upper end of the conical cylinder 71 and each airflow disk, so that the pressure equalization device 7 is structurally stable. When the gas passes through these airflow meshes, due to the decreasing mesh diameter, the gas can be gradually equalized and rectified, making the gas pressure more uniform and the flow more stable. Finally, it flows out from the exhaust pipe 5. The central axis of the exhaust pipe 5 coincides with the central axis of the pressure equalization tank 1 and the upper end extends into the pressure equalization tank 1, ensuring that the equalized gas can be smoothly output to the subsequent equipment.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for optimizing the structure of a pressure equalization tank in a VPSA oxygen generator, comprising a pressure equalization tank body (1), characterized in that: An air inlet pipe (2) and an exhaust pipe (5) are fixedly connected to the middle of the upper end and the middle of the lower end of the pressure equalization tank (1), respectively. An inspection cover (3) is provided on one side of the upper surface of the pressure equalization tank (1). A cavity (8) is provided inside the pressure equalization tank (1). A quartz sand coating (6) is fixedly connected to the inner wall of the pressure equalization tank (1). A pressure equalization device (7) is fixedly connected to the middle of the lower wall of the pressure equalization tank (1). Support legs (4) are fixedly connected to the outer perimeter of the pressure equalization tank (1).

2. The device for optimizing the structure of the pressure equalization tank in a VPSA oxygen generator according to claim 1, characterized in that: The pressure equalization device (7) includes a conical cylinder (71), the outer surface of which is fixedly connected with multiple outer bands (78), and the inner wall of which is fixedly connected with a graphene modified layer (79). From top to bottom, the inner wall of the conical cylinder (71) is sequentially fixedly connected with a first airflow disk (72), a second airflow disk (73), a third airflow disk (74), a fourth airflow disk (75), and a fifth airflow disk (76). The surface of the conical cylinder (71) and the second airflow disk (73) are... The surfaces of the cone (71), the third airflow disk (74), the fourth airflow disk (75), and the fifth airflow disk (76) are all fixedly connected to an airflow mesh (77). The upper middle part of the cone (71), the upper middle part of the second airflow disk (73), the upper middle part of the third airflow disk (74), the upper middle part of the fourth airflow disk (75), and the upper middle part of the fifth airflow disk (76) are all connected to a central rod (710). The cone (71) is fixedly connected inside the equalizing tank (1).

3. The device for optimizing the structure of the equalizing tank in a VPSA oxygen generator according to claim 2, characterized in that: The airflow mesh (77) is honeycomb structure, and the mesh diameter of the airflow mesh (77) decreases gradually from top to bottom along the gas flow direction.

4. The device for optimizing the structure of the equalizing tank in a VPSA oxygen generator according to claim 1, characterized in that: The central axis of the intake pipe (2) coincides with the central axis of the pressure equalization tank (1), and the lower end of the intake pipe (2) extends into the pressure equalization tank (1). The central axis of the exhaust pipe (5) coincides with the central axis of the pressure equalization tank (1), and the upper end of the exhaust pipe (5) extends into the pressure equalization tank (1). The pressure equalization tank (1) has an elliptical structure.

5. The device for optimizing the structure of the equalizing tank in a VPSA oxygen generator according to claim 2, characterized in that: The outer bands (78) are evenly distributed longitudinally along the outer surface of the conical cylinder (71), and the spacing between adjacent outer bands (78) is 100mm, and the width of the outer bands (78) is 30mm.

6. The device for optimizing the structure of the equalizing tank in a VPSA oxygen generator according to claim 2, characterized in that: The diameters of the first airflow disk (72), the second airflow disk (73), the third airflow disk (74), the fourth airflow disk (75), and the fifth airflow disk (76) decrease sequentially from top to bottom.

7. The device for optimizing the structure of the equalizing tank in a VPSA oxygen generator according to claim 2, characterized in that: The conical cylinder (71) has a frustum-shaped structure that is wider at the top and narrower at the bottom. The diameter of the opening at the upper end is larger than the diameter of the opening at the lower end, and the central axis of the conical cylinder (71) coincides with the central axis of the pressure equalization tank (1).

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