Oxygen production equipment device with improved VPSA (Vacuum Pressure Swing Adsorption) pressure equalizing control process

Abstract

The embodiment of the utility model provides a VPSA (Vacuum Pressure Swing Adsorption) pressure-equalizing control process improved oxygen production equipment device, which comprises an adsorption tower body used for accommodating and supporting an adsorbent used in a VPSA oxygen production process and simultaneously providing a channel for inlet and outlet airflow; the pressure-equalizing gas distributor is connected with the adsorption tower body through a flange and is used for guiding and dispersing gas flow into the adsorption tower, the pressure-equalizing gas distributor is of a sectional structure to optimize a flowing path, and a porous net layer is arranged on the inner surface of the pressure-equalizing gas distributor to promote gas distribution; a steady flow baffle is mounted in the pressure-equalizing gas distributor to reduce turbulent flow; and the gas collecting chamber is arranged at the lower part of the adsorption tower body, is used for collecting the adsorbed high-concentration oxygen, and is hermetically connected with the bottom of the adsorption tower body. Through the scheme of the embodiment of the invention, uniform flowing of gas can be ensured, and pressure drop can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial gas separation, in particular to an improved VPSA pressure equalization control process oxygen production equipment device. BACKGROUND

[0002] The improved VPSA pressure equalization control process oxygen production equipment device is an oxygen production equipment designed based on the principle of pressure swing adsorption. Through the optimization of the pressure equalization control process, the oxygen purity, gas production efficiency and equipment operation stability are improved. However, in actual application, the device faces the problem of how to ensure uniform gas flow in the system and reduce unnecessary pressure drop, which may affect the operation efficiency and economy of the entire equipment, and thus adversely affect the gas separation effect and energy consumption control. SUMMARY

[0003] Therefore, the present disclosure provides an improved VPSA pressure equalization control process oxygen production equipment device to at least partially solve the problems in the prior art.

[0004] The improved VPSA pressure equalization control process oxygen production equipment device of the present application comprises:

[0005] The adsorption tower body is used to accommodate and support the adsorbent used in the VPSA oxygen production process, and to provide a passage for the inlet and outlet gas flow.

[0006] The pressure equalization gas distributor is connected to the adsorption tower body through a flange, and is used to guide and disperse the gas flow into the adsorption tower. The pressure equalization gas distributor has a segmented structure to optimize the flow path. The inner surface of the pressure equalization gas distributor is provided with a porous mesh layer to promote gas distribution. A flow stabilizing baffle is installed inside the pressure equalization gas distributor to reduce turbulence.

[0007] The gas collection chamber is installed at the lower part of the adsorption tower body and is used to collect high-concentration oxygen after adsorption. The gas collection chamber is sealingly connected to the bottom of the adsorption tower body.

[0008] The flow regulating valve is placed on the gas inlet to control the gas flow and is connected to the inlet flange of the adsorption tower body.

[0009] The exhaust valve assembly is installed at the exhaust gas discharge position to discharge the remaining exhaust gas and is connected to the side wall interface of the adsorption tower body through a pipeline.

[0010] Preferably, the segmented structure of the pressure equalization gas distributor is of the diverging type, so that the flow cross section of each segment of the segmented structure gradually increases.

[0011] Preferably, the porous mesh layer is stacked by multiple layers of metal wire meshes with different mesh sizes, and the mesh size of each layer changes in a gradient manner.

[0012] Preferably, the flow stabilizing baffle is composed of multiple layers of staggered plate-like structures.

[0013] Preferably, the pressure equalizing gas distributor further includes internal spiral guide vanes for guiding the airflow along a spiral path.

[0014] Preferably, the adsorption tower is provided with a support frame for supporting the pressure equalizing gas distributor and the adsorbent, and the support frame is connected with reinforcing ribs to improve structural stability.

[0015] Preferably, an elastic sealing ring is provided at the connection between the adsorption tower body and the pressure equalizing gas distributor to prevent leakage.

[0016] Preferably, the gas collection chamber is equipped with an airflow equalizer at the top to make the outflowing gas more stable.

[0017] Preferably, the exhaust valve assembly includes a quick-release valve.

[0018] Preferably, the gas collection chamber is provided with a drying layer, and the drying layer is filled with a desiccant.

[0019] Preferably, a differential pressure sensor is provided on the side of the adsorption tower body to monitor the internal and external pressure difference.

[0020] This disclosure provides an oxygen production equipment device with improved VPSA pressure equalization control process, comprising: an adsorption tower body for housing and supporting the adsorbent used in the VPSA oxygen production process, and providing channels for inlet and outlet airflow; a pressure equalization gas distributor connected to the adsorption tower body via a flange for guiding and dispersing airflow into the adsorption tower, wherein the pressure equalization gas distributor has a segmented structure to optimize the flow path, a porous mesh layer on the inner surface of the pressure equalization gas distributor to promote gas diversion, and a flow stabilizing baffle installed inside the pressure equalization gas distributor to reduce turbulence; a gas collection chamber installed at the lower part of the adsorption tower body for collecting high-concentration oxygen after adsorption, the gas collection chamber being sealed to the bottom of the adsorption tower body; a flow regulating valve placed on the inlet to control the intake air volume and connected to the inlet flange of the adsorption tower body; and an exhaust valve assembly installed at the tail gas discharge position for discharging residual waste gas and connected to the side wall interface of the adsorption tower body via a pipeline. The solution of this disclosure can solve the problem of ensuring uniform gas flow and reducing pressure drop. Attached Figure Description

[0021] In order to more clearly illustrate the technical solutions in the exemplary embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present disclosure, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative effort based on these drawings.

[0022] Figure 1 is a structural schematic diagram of the oxygen production equipment device of the VPSA pressure equalization control process improvement according to the present disclosure;

[0023] Figure 2 is a structural schematic diagram of the internal structure of the adsorption tower body in the oxygen production equipment device of the VPSA pressure equalization control process improvement according to the present disclosure;

[0024] Figure 3 is a structural schematic diagram of the internal structure of the pressure equalization gas distributor in the oxygen production equipment device of the VPSA pressure equalization control process improvement according to the present disclosure;

[0025] Figure 4 is a structural schematic diagram of the gas collection chamber in the oxygen production equipment device of the VPSA pressure equalization control process improvement according to the present disclosure; Figure 1 is an enlarged view of position A in the above figure;

[0026] Figure 5 is a structural schematic diagram of the internal structure of the gas collection chamber in the oxygen production equipment device of the VPSA pressure equalization control process improvement according to the present disclosure.

[0027] In the figure: 1, pressure equalization gas distributor; 11, sectional structure; 12, porous mesh layer; 13, steady flow baffle; 14, spiral guide vane; 2, adsorption tower body; 21, support frame; 22, reinforcing rib; 3, gas collection chamber; 31, gas flow equalizer; 4, flow regulating valve; 5, exhaust valve assembly; 51, quick relief valve; 6, elastic sealing ring; 7, drying layer; 8, differential pressure sensor DETAILED DESCRIPTION

[0028] It is to be understood that the terminology used herein such as first and second, and the like, is only intended to distinguish one entity or action from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0029] The "VPSA" in the utility model is the abbreviation of vacuum pressure swing adsorption technology.

[0030] As shown in Figure 1 , the VPSA pressure equalization control process improved oxygen production equipment device of the application includes: pressure equalization gas distributor 1, adsorption tower body 2, gas collection chamber 3, flow regulating valve 4 door and exhaust valve assembly 5. Through the specific setting and structure optimization of these parts, more uniform gas flow and efficient oxygen production in the VPSA process can be realized.

[0031] The pressure equalization gas distributor 1 is used to guide and disperse the airflow to the inside of the adsorption tower, so that the airflow flows more uniformly into the adsorption material. The pressure equalization gas distributor 1 adopts a segmented structure 11 design, which can adjust the local flow field state according to the needs of different heights in the adsorption tower, further improving the uniformity of the airflow. Its surface is covered with a porous mesh layer 12, and the small openings of the porous mesh layer 12 can effectively shunt the airflow, avoiding the problem of airflow concentration caused by a single air inlet point. At the same time, it is also installed with steady flow baffles 13 inside, which are designed according to the aerodynamic principle, reducing airflow turbulence without changing the total flow, so as to ensure smooth airflow input.

[0032] The adsorption tower body 2 is used to contain and support the adsorbent used in the VPSA oxygen production process, and at the same time provides an access channel for the airflow. Its main body is a cylindrical or square sealed container, which is connected with the pressure equalization gas distributor 1 through a flange interface. This connection method not only improves the sealing performance, but also facilitates equipment installation and maintenance. In addition, the tower body is provided with a support structure to maintain the stable distribution of the adsorbent packing, preventing the packing from sinking due to compression during long-term operation and affecting the gas flow path.

[0033] The gas collection chamber 3 is located at the lower part of the adsorption tower, mainly used for collecting high-concentration oxygen generated after oxygen production by the adsorption tower, and delivering it to the end-use link. The gas collection chamber 3 is sealed and connected with the adsorption tower through the base, which ensures that there is no risk of external leakage in the collection chamber, and a buffer zone can be designed inside to slow down transient fluctuations, such as pressure pulse effects during gas flow. Such technical details ensure that the quality of oxygen from collection to delivery is not lost.

[0034] The flow regulating valve 4 door is installed on the gas inlet pipe, mainly used for precise control of the gas flow rate, so as to realize fine adjustment of gas distribution and pressure in the whole VPSA system. The valve contains a regulating rod and an accurately openable gate, and its opening and closing process is controlled by an electric or pneumatic actuator, which can be adjusted in real time according to the preset flow standard. For example, if the initial stage detects that the inlet gas flow is too high, causing the pressure drop to be too fast, the regulating valve can reduce the opening size accordingly, to stabilize the parameter range in the system and ensure the stability of the process flow.

[0035] The exhaust valve assembly 5 is designed to discharge waste gas left after the completion of the VPSA oxygen production process. It is placed at the exhaust gas discharge position and connected to the adsorption tower body 2 side wall interface through the pipeline. This assembly is composed of a valve unit and an exhaust pipeline, and can be optionally equipped with a filter unit to further process the residual particles or other components in the tail gas. In the working process, the exhaust valve opens and closes according to the set program, for example, by time interval or monitoring the pressure signal of the adsorption tower outlet to determine the action time point. This helps to effectively process by-products without affecting the main process flow.

[0036] Based on the above structure and component arrangement, the device can effectively solve the problem of how to ensure uniform gas flow and reduce pressure drop. Specifically, by designing a segmented pressure-equalizing gas distributor 1 and configuring corresponding flow-stabilizing baffles 13 and porous mesh layers 12, the gas entering the adsorption tower can be distributed in each adsorption area with a small degree of turbulence, thereby achieving consistency in overall flow rate and pressure distribution. At the same time, precise control of the opening amount of the flow regulating valve 4 door can balance the gas flow relationship between the inlet and outlet under different working conditions, prevent excessive compression in local areas from causing additional energy consumption, and ultimately achieve uniform and stable gas supply output under low pressure drop conditions.

[0037] As Figure 3As shown, in one embodiment, the equalization gas distributor 1 of the improved VPSA equalization control process oxygen production equipment device of the present application adopts a segmented structure 11, which realizes the gradually expanding characteristics of gradually expanding flow cross-section through step-by-step optimization design. Specifically, this segmented design divides the gas flow path into several independent parts, and the flow cross-section of each part gradually expands according to the predetermined rules. The design is installed at the inlet of the adsorption tower, which can be stably connected with the adsorption tower body 2 through flanges, and combined with the effects of the porous mesh layer 12 and the internal flow stabilizing baffle 13, so that the gas distribution into the adsorption tower is more uniform.

[0038] For example, it can be selected to be stacked by several ring-shaped components, the inner diameter and outer diameter of each ring-shaped component are adjusted step by step according to the gas flow characteristics to meet the gradually expanding requirements, and at the same time these ring-shaped components are assembled as a whole through welding or bolt fixation to ensure the structural strength and reliability. Specifically, the design can further optimize the shape and angle of each section by combining computational fluid dynamics simulation, thereby minimizing gas flow resistance and improving distribution uniformity.

[0039] As shown, Figure 3 In one embodiment, the porous mesh layer 12 of the improved VPSA equalization control process oxygen production equipment device of the present application is located on the surface of the equalization gas distributor 1 and is stacked by multiple layers of metal wire meshes with different mesh counts. The mesh size of each layer of metal wire mesh changes in a gradient along the gas flow direction, forming a layer-by-layer transition structure to realize the step-by-step flow distribution and uniform diffusion of the gas flow. This design not only effectively reduces the local turbulence phenomenon of the gas flow caused by a single mesh size, but also ensures that the gas flow can be more uniformly distributed to the inside of the adsorbent material when entering the adsorption tower, improving the contact consistency of the gas flow and the adsorbent. Specifically, each layer of metal wire mesh is assembled by spot welding or other fixation methods, ensuring its stable position and preventing displacement.

[0040] For example, technically, this feature can be realized by selecting appropriate metal materials (such as stainless steel or nickel-based alloy) and combining precise punching to make metal wire meshes with different mesh counts. Then, according to the actual gas flow characteristics, determine the appropriate mesh diameter gradient arrangement order, and then fix these metal wire meshes on the outer surface of the equalization gas distributor 1 by welding or mechanical assembly, so that the device adapts to the complex VPSA process requirements, while ensuring stable and reliable overall operation.

[0041] As shown, Figure 3As shown, in one embodiment, the flow stabilizing baffle 13 of the improved VPSA equalization control process oxygen generation equipment device of the present application is located inside the equalization gas distributor 1, which plays a role in stabilizing the airflow and reducing the pressure drop. Specifically, the flow stabilizing baffle 13 is a specially designed component composed of multiple layers of staggered plate structures, for example, the flow stabilizing baffle is composed of two layers of blades, the blades of different layers are arranged in a staggered manner, the upper layer of blades is staggered at a certain angle with the lower layer of blades in the horizontal projection plane, forming an asymmetric flow channel, its main function is to suppress the generation of turbulent flow by adjusting the airflow path. The installation position of the flow stabilizing baffle 13 in the equalization gas distributor 1 is optimized to ensure that it can minimize the interference with the overall fluid flow while not affecting the gas distribution performance of the equalization gas distributor 1 itself.

[0042] For example, the flow stabilizing baffle 13 with appropriate material and thickness is selected, combined with precise geometric shape design to match the working environment in the adsorption tower. Specifically, these baffles can be modularly spliced according to actual working condition requirements, and fixed to specific areas of the equalization gas distributor 1 through bolts, thereby ensuring the stability and adaptability of the overall structure. In this process, the flow stabilizing baffle 13 cooperates with the porous mesh layer 12 in the equalization gas distributor 1 to form a more smooth gas guiding path.

[0043] As shown, Figure 3 In one embodiment, the equalization gas distributor 1 of the improved VPSA equalization control process oxygen generation equipment device of the present application is also provided with a spiral guide vane 14 for effectively guiding the airflow before entering the adsorption tower. The spiral guide vane 14 is installed inside the equalization gas distributor 1 and firmly combined with the inner wall of the equalization gas distributor 1. Specifically, the spiral guide vane 14 is a continuous curved structure that can force the gas to move along a set spiral path. In addition, the surface of the spiral guide vane 14 is designed in a smooth transition form to reduce airflow resistance and ensure its smoothness. Through this special guiding mechanism, the gas can be fully mixed when entering the adsorption tower, ensuring the uniform distribution of airflow in the adsorption tower.

[0044] For example, the spiral guide vane 14 can be made of metal or composite material with appropriate elasticity and strength, which is fixed to the inner wall of the equalization gas distributor 1 and further reinforced at the connection points by adhesives or fasteners. Then, the completed equalization gas distributor 1 is connected to the adsorption tower body 2 through a flange, so that all airflows in the entire system must pass through the range of the spiral guide vane 14 during operation to achieve the expected mixing effect.

[0045] As shown, Figure 2As shown, in one embodiment, the adsorption tower body 2 of the improved VPSA equalization control process oxygen production equipment device of the present application is provided with a support frame 21 for providing a stable installation and bearing environment for the equalization gas distributor 1 and the adsorbent. The support frame 21 is arranged at the center position inside the adsorption tower body 2 through reasonable structural design, and surrounds the space boundary of the adsorption tower body 2 to play the role of dispersing load and stabilizing the overall structure. At the same time, a plurality of reinforcing ribs 22 are arranged in the adsorption tower body 2 to connect and fix the support frame 21 to the inner wall surface of the adsorption tower body 2, so that the support frame 21 can remain firm and reliable under complex gas dynamic conditions, thereby improving the operation stability of the entire device.

[0046] The design of the above-mentioned support frame 21 and reinforcing rib 22 will not hinder the gas flow path in the adsorption tower. Specifically, by optimizing the directional layout of the reinforcing rib 22, interference areas with the main gas flow channel are avoided, so that the gas entering the adsorption tower can still flow freely to the working space formed between the equalization gas distributor 1 and the adsorbent. For example, in terms of technical implementation, the reinforcing rib 22 can be uniformly arranged between the support frame 21 and the inner wall surface of the adsorption tower body 2 by welding or mechanical fixation, and appropriate material and size specifications can be selected to meet the mechanical performance requirements, so as to enhance the overall rigidity without affecting the original function of the device.

[0047] As shown, Figure 4 In one embodiment, the adsorption tower body 2 of the improved VPSA equalization control process oxygen production equipment device of the present application is provided with an elastic sealing ring 6 at the connection position of the equalization gas distributor 1 to enhance the air tightness between the two and reduce the additional pressure loss caused by the connection. Specifically, the elastic sealing ring 6 is located at the part of the adsorption tower body 2 close to the flange end surface, and generates a tight compression deformation when the equalization gas distributor 1 is assembled to the adsorption tower body 2, so that the combination of the two is more stable and reliable. In addition, this structural design is not limited to simple fixed form connection, but also includes adjusting the compression degree for special working conditions to meet the needs of specific use environment.

[0048] The elastic sealing ring 6 is composed of high-performance elastic material, has excellent characteristics such as high pressure resistance and aging resistance, and can maintain stable performance under frequent pressure changes and high temperature working conditions. For example, during installation, the initial sealing pressure can be adjusted by pre-pressing the elastic sealing ring 6, so that it meets the required conditions for the operation of the adsorption tower body 2, and does not cause excessive stress to affect the service life of the parts.

[0049] Specifically, a circle of precisely processed embedding grooves can be designed on the flange surface of the adsorption tower body 2, and the elastic sealing ring 6 is embedded in the embedding grooves before assembly. At the same time, ensure that the flange connection bolts are tightened in order, so that the sealing ring can uniformly distribute pressure and effectively prevent the formation of leakage channels.

[0050] As Figure 1 and Figure 2 shown, in one embodiment, the gas collection chamber 3 of the improved VPSA equalization control process oxygen production equipment device of the present application is additionally provided with a gas flow equalizer 31 at the top, which is used to adjust the state of the outflowing gas. The gas flow equalizer 31 is installed at the top of the gas collection chamber 3, forming an integrated or assembled connection structure with the gas collection chamber 3, which can optimize the flow state of the gas discharged from the adsorption tower body 2. The gas flow equalizer 31 is composed of multiple layers of grid plates, flow stabilizing plates or other specific shape flow regulating components, which are arranged in a certain pattern to ensure that the gas flow tends to be stable when leaving the device. In addition, the gas flow equalizer 31 also reduces the local pressure fluctuations caused by the sudden release of gas flow through reasonable spatial layout.

[0051] For example, a gas flow equalizer 31 can be made of a structure composed of multiple layers of perforated flow stabilizing plates made of stainless steel or aluminum alloy, which is fixed to the top edge of the gas collection chamber 3 and communicates with the internal space. Specifically, the spacing between the flow stabilizing plates is precisely calculated to adapt to the gas flow rate under different flow conditions, and the gas flow equalizer 31 is firmly assembled to the gas collection chamber 3 by means of bolt connection, thereby ensuring the structural stability and sealing performance.

[0052] As Figure 4 shown, in one embodiment, the flow regulating valve 4 door of the improved VPSA equalization control process oxygen production equipment device of the present application is placed on the gas inlet pipe and tightly connected with the adsorption tower body 2 inlet flange. This design enables the flow regulating valve 4 door to accurately adjust the inlet flow during system operation, adapting to the needs under different working conditions. By optimizing the internal valve core structure and selecting appropriate material combinations, the flow regulating valve 4 door can achieve low pressure loss, high precision gas supply in a large range, while ensuring the stability and consistency of the entire system.

[0053] For example, the flow regulating valve 4 door can achieve the above-mentioned goals by increasing multiple stages of throttle orifice plates and spring feedback mechanisms. Specifically, this combined design can reduce the impact of gas flow on the pipe wall while adjusting the inlet flow, thereby reducing unnecessary energy loss and improving the overall equalization effect. In addition, the flow regulating valve 4 door is installed using independent fixed supports to ensure its precise docking with the adsorption tower body 2 inlet flange, ensuring the normal operation of the system.

[0054] As Figure 1 and Figure 2As shown, in one embodiment, the exhaust valve assembly 5 of the improved VPSA equalization control process oxygen generation device of the present application includes a rapid relief valve 51. The rapid relief valve 51 is installed at the tail gas discharge position, and its specific structure is composed of a valve body, a pressure relief channel, and an opening and closing control unit. During installation, the rapid relief valve 51 is tightly connected with the pipeline at the interface between the adsorption tower body 2 and the side wall, so that excessive pressure gas can be discharged in time to avoid interference with system operation caused by excessive back pressure. In this way, the valve can ensure that the remaining gas is quickly released at the end of the equalization stage, thereby maintaining the overall balance of gas flow.

[0055] For example, the pressure relief channel with a certain cross-sectional size can be pre-set in the pipeline, and an electronic controller can be configured to adjust the opening time and opening degree of the valve core. When the system detects an excessive pressure signal, the opening and closing control unit quickly responds to drive the valve core to open, completely releasing the excess pressure within a set time while ensuring that it does not affect subsequent process steps. Specifically, the valve material needs to pay attention to corrosion resistance and reliability to adapt to the use requirements under different working conditions.

[0056] As shown, Figure 5 As shown, in one embodiment, the gas collection chamber 3 of the improved VPSA equalization control process oxygen generation device of the present application is optimized in internal structure to realize the drying treatment function. Specifically, a special drying layer 7 is arranged in the gas collection chamber 3, which is filled with a drying agent with good moisture absorption performance. Its installation position is located on the path before the high-concentration oxygen stream from the adsorption tower body 2 enters the storage stage, which can directly contact the high-concentration oxygen stream flowing out of the adsorption tower body 2, thereby ensuring that water vapor and other condensate are fully absorbed at this stage. The drying layer 7 is nested inside the gas collection chamber 3 as an independent structure, usually supported by a mesh frame and fixed by a sealing device to ensure air tightness.

[0057] The composition structure of the drying layer 7 needs to consider efficient removal of moisture while avoiding affecting the target gas components. The drying agent selection should meet the needs of high adsorption capacity and long-term stable operation, for example, using molecular sieves or other chemically inert porous materials for filling to prevent the generation of by-products and interfere with the oxygen generation process. In terms of connection form, the drying layer 7 and the gas collection chamber 3 are firmly combined through buckles or threaded fasteners for easy replacement and maintenance in the later stage. In addition, the drying layer 7 is provided with ventilation gaps around to ensure smooth gas flow while uniformly contacting the surface of the drying medium.

[0058] For example, the installation can be completed by pre-processing modular drying components. That is, after the prefabricated drying layer 7 is installed in the designated space of the gas collection chamber 3, a sealing test is performed to ensure that there is no gas bypass leakage during the operation of the entire system.

[0059] Referring backFigure 1 In one embodiment, the VPSA pressure equalization control process improved oxygen production equipment device of the present application is characterized in that a differential pressure sensor 8 for real-time detection of the change in the internal and external pressure difference is installed on the side of the adsorption tower body 2. The installation position of the differential pressure sensor 8 is optimized to ensure accurate monitoring of the pressure conditions inside and outside the adsorption tower body 2. The component is fixed to the side shell of the adsorption tower body 2 by fasteners, and the specific installation orientation should avoid direct interference of the gas flow path with the sensitive detection area. Its structure generally includes a sensing probe and a signal processing unit connected thereto, which can sense the small pressure difference between the internal and external media of the adsorption tower and convert the collected data into electrical signal output. The signal processing unit performs preliminary analysis and transmission of the raw data to facilitate the control system to quickly adjust the parameters based on the actual measurement results.

[0060] For example, the stability of the differential pressure sensor 8 in a high temperature or vibration environment can be ensured by selecting appropriate mounting brackets and sealing materials, such as using elastic rubber pads to reduce the influence of external vibration force transmission on sensing accuracy. Specifically, a high-precision MEMS differential pressure chip can be used as the core detection element, and it is connected to the main control system interface through a data cable, thereby realizing the effective combination of pressure information feedback and automatic control function.

[0061] In actual operation, when the device is in use, the gas flow into the adsorption tower is controlled by the flow regulating valve 4 door to ensure that the gas inlet quantity meets the process requirements; the pressure equalization gas distributor 1 guides and disperses the gas flow, optimizes the flow path by using its segmented structure 11, and realizes gas distribution by means of the surface porous mesh layer 12; at the same time, the internal steady flow baffle 13 can reduce gas turbulence and ensure that the gas is evenly introduced into the adsorbent material in the adsorption tower; in this process, the adsorbent selectively adsorbs the gas to separate the target oxygen from the remaining components; then, the high-concentration oxygen is collected through the gas collection chamber 3 to provide pure oxygen output for the subsequent process flow; and the tail gas is discharged through the exhaust valve assembly 5 to complete the gas circulation in the entire oxygen production process.

[0062] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present disclosure, and it should be understood that the above description is only a specific embodiment of the present disclosure and does not limit the protection scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the embodiments of the present disclosure shall be included in the protection scope of the embodiments of the present disclosure.

Claims

1. An oxygen production equipment device with improved VPSA pressure equalization control process, characterized in that, include: The adsorption tower body (2) is used to contain and support the adsorbent used in the VPSA oxygen production process, and at the same time provides a channel for the inlet and outlet airflow. A pressure equalizing gas distributor (1) is connected to the adsorption tower body (2) via a flange and is used to guide and disperse the gas flow into the adsorption tower. The pressure equalizing gas distributor (1) has a segmented structure (11) to optimize the flow path. The inner surface of the pressure equalizing gas distributor (1) is provided with a porous mesh layer (12) to promote gas diversion. A flow stabilizing baffle (13) is installed inside the pressure equalizing gas distributor (1) to reduce turbulence. A gas collection chamber (3) is installed at the bottom of the adsorption tower body (2) to collect high-concentration oxygen after adsorption. The gas collection chamber (3) is sealed to the bottom of the adsorption tower body (2). A flow regulating valve (4) is placed on the air inlet to control the air intake and is connected to the inlet flange of the adsorption tower body (2); An exhaust valve assembly (5) is installed at the exhaust gas discharge position to discharge the remaining waste gas and is connected to the side wall interface of the adsorption tower body (2) through a pipe.

2. The oxygen production equipment device with improved VPSA pressure equalization control process according to claim 1, characterized in that: The segmented structure (11) of the equalizing gas distributor (1) is gradually expanding, so that the flow cross section of each segment in the segmented structure (11) gradually expands.

3. The oxygen production equipment device with improved VPSA pressure equalization control process according to claim 1, characterized in that: The porous mesh layer (12) is composed of multiple layers of metal wire mesh with different mesh counts stacked together, and the mesh size of each layer varies in a gradient.

4. The oxygen production equipment device with improved VPSA pressure equalization control process according to claim 1, characterized in that: The flow stabilizing baffle (13) is composed of multiple layers of staggered plate-like structures.

5. An oxygen production equipment device with improved VPSA pressure equalization control process according to claim 1, characterized in that: The equalizing gas distributor (1) also includes a spiral guide vane (14) located inside, which is used to guide the airflow along the spiral path.

6. An oxygen production equipment device with an improved VPSA pressure equalization control process according to claim 1, characterized in that: The adsorption tower body (2) is provided with a support frame (21) for supporting the pressure equalizing gas distributor (1) and the adsorbent. The support frame (21) is connected with reinforcing ribs (22) to improve structural stability.

7. An oxygen production equipment device with improved VPSA pressure equalization control process according to claim 1, characterized in that: An elastic sealing ring (6) is provided at the connection between the adsorption tower body (2) and the pressure equalizing gas distributor (1) to prevent leakage.

8. An oxygen production equipment device with improved VPSA pressure equalization control process according to claim 1, characterized in that: The gas collection chamber (3) is equipped with an airflow equalizer (31) at the top to make the outflowing gas more stable.

9. An oxygen production equipment device with an improved VPSA pressure equalization control process according to claim 1, characterized in that: The exhaust valve assembly (5) is equipped with a quick-release valve (51).

10. An oxygen production equipment device with an improved VPSA pressure equalization control process according to claim 1, characterized in that: The gas collection chamber (3) is provided with a drying layer (7), which is filled with a desiccant.

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