A region-based oxygen reduction assembly shell and hollow fiber membrane assembly

Abstract

The utility model discloses a kind of oxygen reduction assembly shell and hollow fiber membrane assembly based on area division, it is related to gas filtering technical field, the oxygen reduction assembly shell includes shell, shell is divided into following three areas according to length proportion along gas flow direction: proximal end area, transition area and distal end area;The proximal end area is the area within 15% of shell length from gas inlet, multiple circular orifices are provided in the proximal end area;The transition area is the area between 15% and 40% of shell length, multiple elliptical holes are provided in the transition area;The distal end area is the area more than 40% of shell length to end, flow guide louver type orifice structure is used in the distal end area.The oxygen reduction assembly shell of the utility model solves the technical problems that existing hollow fiber membrane assembly shell orifice mode is single, airflow is unevenly distributed, local airflow impact is strong, flow resistance is big and lack dynamic control ability, can effectively improve membrane assembly separation efficiency and prolong service life.

Description

Technical Field

[0001] This application relates to the field of gas filtration technology, specifically to a region-division-based oxygen reduction component housing and a hollow fiber membrane component. Background Technology

[0002] In existing hollow fiber membrane modules, the shell typically employs a uniformly distributed circular perforation structure with consistent perforation diameter, failing to consider the uneven distribution of airflow within the shell. Particularly in the feed gas inlet area and areas far from the inlet, the gas flow resistance differs significantly, leading to uneven airflow distribution and impacting the membrane module's separation efficiency and lifespan. Furthermore, the uniform perforation design is prone to creating localized jets under high-pressure gas flow, impacting the membrane surface and causing damage to the membrane fibers or performance degradation.

[0003] Therefore, existing technologies suffer from problems such as uneven airflow distribution, high flow resistance, insufficient shear force on the membrane surface, and poor system adaptability. There is an urgent need for a shell that can achieve adaptive airflow control and improve airflow stability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a region-division-based oxygen reduction component housing and a hollow fiber membrane module, which solves the technical problems of existing hollow fiber membrane module housings having a single opening method, uneven airflow distribution, strong local airflow impact, high flow resistance, and lack of dynamic control capabilities.

[0005] The present invention adopts the following technical solution.

[0006] The first aspect of this utility model discloses an oxygen reduction component housing based on regional division, including a housing, which is divided into the following three regions along the gas flow direction according to the length ratio: a proximal region, a transition region and a distal region; The proximal region is the area from the gas inlet to within 15% of the shell length, and multiple circular openings are provided in the proximal region; the transition region is the area between 15% and 40% of the shell length, and multiple elliptical holes are provided in the transition region; the distal region is the area beyond 40% of the shell length to the end, and a flow-guiding louver-type opening structure is adopted in the distal region.

[0007] Preferably, the diameter of the circular opening is 1.5-2.5 mm, the opening density is 15-20 holes / cm², and the guide angle is 0°.

[0008] Preferably, the edge of the elliptical hole has a corrugated structure, and the ratio of the major axis to the minor axis of the elliptical hole is 2:1.

[0009] Preferably, the elliptical hole has an opening density of 3-5 holes / cm² and a flow guide angle of 0° to 30°.

[0010] Preferably, the flow-guiding louver-type opening structure includes louver holes and blades, the length-to-width ratio of the louver holes is 5:1, and the opening density of the louver holes is 1 hole / 10cm².

[0011] Preferably, the blade tilt angle in the louver hole varies from 0° to 90°, and the blade opening angle near the transition zone is greater than the blade opening angle away from the transition zone.

[0012] Preferably, the housing is further provided with an adjustment device, which includes a pressure sensor and a micro actuator; The pressure sensor is communicatively connected to the micro actuator. The pressure sensor transmits pressure data to the micro actuator, which adjusts the opening and closing angle of the louver holes in the distal area or the guiding angle of the elliptical holes in the transition area based on the collected pressure data.

[0013] Preferably, the micro actuator includes: a stepper motor and a piezoelectric ceramic slider; The piezoelectric ceramic slider is embedded in the elliptical hole in the transition zone, and the stepper motor is mounted on the blade of the louver hole in the far end zone.

[0014] Preferably, the piezoelectric ceramic expands and contracts, causing the slider to move, thereby deflecting the major axis of the elliptical hole by an angle of 0° to 30°; the stepper motor rotates, thereby causing the blade tilt angle to change by an angle of 0° to 90°.

[0015] The second aspect of this utility model discloses a hollow fiber membrane assembly including the oxygen reduction component housing described in the first aspect.

[0016] Compared with the prior art, the beneficial effects of this utility model include at least the following: By dividing the housing into a proximal zone, a transition zone, and a distal zone along the airflow direction, and employing different opening structures and parameter designs for each zone, the airflow achieves suitable guiding and dispersing effects in different areas. This effectively reduces flow resistance, improves airflow stability, and reduces membrane surface shear force, thereby enhancing membrane module separation efficiency and extending service life. Furthermore, by integrating a regulating device, the airflow control acquires dynamic response capabilities, thus improving the system's adaptability and operational stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the oxygen reduction component housing structure in this utility model; Figure 2 This is a schematic diagram of the proximal region of the oxygen-reducing component housing in this utility model; Figure 3 This is a schematic diagram of the transition zone in the housing of the oxygen reduction component in this utility model; Figure 4This is a schematic diagram of the distal region of the oxygen-reducing component housing in this utility model; In the picture: 1. Shell; 2. Proximal region; 3. Transition zone; 4. Remote area; 5. Circular opening; 6. Oval hole; 7. Venetian blind openings. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The embodiments described in this application are merely some embodiments of this utility model, and not all embodiments. Based on the spirit of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

[0023] like Figure 1-4 As shown, Embodiment 1 of this utility model proposes an oxygen reduction component housing based on region division, which is suitable for the optimized design of the housing structure of hollow fiber membrane modules, including housing 1; Based on the structural division method, the shell 1 is divided into the following three regions along the direction of raw gas flow according to the length ratio: the near end region 2, the transition region 3, and the far end region 4; The proximal region 2 is the area within 15% of the length of the shell 1 from the inlet; the transition region 3 is the area between 15% and 40% of the length of the shell 1; and the distal region 4 is the area extending beyond 40% of the length of the shell 1 to the end.

[0024] In the proximal region 2, standard circular openings 5 ​​are used, with a diameter of 1.5-2.5 mm and an opening density of 15-20 openings / cm². The guide angle is 0° to ensure that the high-pressure airflow can be evenly dispersed after entering the housing 1, avoiding local jet impact on the membrane surface, thereby protecting the membrane filament structure and improving the uniformity of the initial airflow distribution.

[0025] In transition zone 3, an elliptical hole 6 is designed with a corrugated edge. The ratio of the major axis to the minor axis of the hole is 2:1. The major axis is 2-4mm and the minor axis is 1-2mm. The hole density is controlled at 3-5 holes / cm². The guide angle can be automatically adjusted from 0° to 30°.

[0026] This structure further disperses the airflow by disturbing it through the corrugated edges, reduces turbulence formation, improves airflow stability and membrane surface shear force, and helps to improve separation efficiency.

[0027] In the far end area 4, a flow-guiding louver-type opening structure is adopted, including louver holes 7 and blades. The length-to-width ratio of the louver hole 7 is 5:1, the length is 5cm, the width is 1cm, and the density is controlled at 1 hole / 10cm². The blade angle in the louver opening 7 changes from 0° to 90°, with the external opening angle being larger than the internal opening angle. When the external opening is larger, airflow resistance is reduced, while the internal opening is smaller, preventing airflow from directly impacting the hollow fiber membrane, thus providing protection. This structure ensures smooth airflow while effectively reducing flow resistance in the distal region 4 and improving overall airflow balance.

[0028] The exterior is the side of the louver opening 7 closest to the transition zone, which is the side where the airflow first contacts and enters the distal zone 4. Here, the blade angle of the louver opening 7 is larger, allowing the larger opening to make it easier and smoother for the airflow to initially enter, avoiding severe throttling and pressure drop at the entrance of the distal zone 4.

[0029] The interior features louvered openings 7 on the side closest to the hollow fiber membrane. The opening angle is relatively small here to prevent direct airflow impact on the membrane. According to the principle of continuity in fluid mechanics, at the same flow rate, a smaller opening area leads to a decrease in airflow velocity. The blade angle of the louvered openings 7 changes from 0° to 90°, gradually altering the airflow direction from parallel to perpendicular to the blades. This creates a more uniform and gentle airflow, avoiding direct impact on the fragile hollow fiber membrane and thus extending its service life.

[0030] This application divides the hollow fiber membrane module housing into a near-end region, a transition region, and a far-end region along the airflow direction, and each region adopts a suitable perforation structure. The near-end region uses standard circular perforations with a guide angle of 0° to achieve uniform dispersion of high-pressure airflow. The transition region uses elliptical perforations with corrugated edges to improve airflow stability by utilizing the disturbance effect of the corrugated edges. The far-end region uses guide louver holes with large external openings to reduce resistance and small internal openings to protect the hollow fibers.

[0031] Embodiment 2 of this utility model discloses a housing for an oxygen reduction component based on regional division. Based on Embodiment 1, an improved scheme is proposed to address the characteristics of the transition zone 3 using elliptical holes 6 with corrugated edges and the distal zone 4 using louvered holes 7. An adjustment device is integrated in the housing 1. The adjustment device includes a pressure sensor and a micro actuator, and the pressure sensor and the micro actuator are communicatively connected.

[0032] The pressure sensor monitors the airflow pressure in different areas inside the housing in real time. The pressure sensor transmits the pressure data to the micro actuator, which dynamically adjusts the opening and closing angle of the louver holes in the distal area or the guiding angle of the elliptical holes in the transition area based on the collected data. This achieves adaptive adjustment of airflow guidance, thereby improving the system's operational stability and adaptability under different operating conditions.

[0033] The micro actuator includes: a micro stepper motor and a piezoelectric ceramic slider; Two pressure sensors are arranged on the wall of the housing 1 to monitor the pressure difference between the two sides in real time. The piezoelectric ceramic slider is embedded in the elliptical hole 6 in the transition zone 3. The micro stepper motor is installed on the blade of the louver hole 7 in the far end zone 4.

[0034] The flow angle adjustment of the elliptical hole 6 in the transition zone 3: The elliptical hole 6 is embedded with a piezoelectric ceramic slider. The expansion and contraction of the ceramic causes the slider to move, thus deflecting the major axis of the elliptical hole 6 by 0° to 30°. When the pressure sensor detects a change in airflow pressure, the piezoelectric ceramic slider automatically adjusts the opening and closing angle of the elliptical hole 6, thereby changing the degree of airflow disturbance and achieving dynamic optimization of airflow distribution. This can further improve the stability of airflow in the transition zone and the shear force on the membrane surface, enhancing the adaptability and separation efficiency of the membrane module.

[0035] The remote area has 4 louvered openings at 7 angles: a miniature stepper motor is installed behind the blades. The rotation of the stepper motor drives the blades to change their tilt angle, which changes from 0° to 90°.

[0036] In summary, by dividing the area and designing differentiated openings, combined with an intelligent adjustment device, this application effectively improves the uniformity of airflow distribution, flow efficiency, and operational stability of hollow fiber membrane modules.

[0037] Embodiment 3 of this utility model discloses an oxygen reduction component housing based on region division, including housing 1; Based on the structural division method, the shell 1 is divided into the following three regions along the direction of raw gas flow according to the length ratio: the near end region 2, the transition region 3, and the far end region 4; The proximal region 2 is the area within 15% of the length of the shell 1 from the inlet; the transition region 3 is the area between 15% and 40% of the length of the shell 1; and the distal region 4 is the area extending beyond 40% of the length of the shell 1 to the end.

[0038] In the proximal region 2, a standard circular opening 5 is used with a diameter of 2mm, the opening density is controlled at 15-20 openings / cm², and the guide angle is 0°.

[0039] In transition zone 3, an elliptical hole 6 is designed with a corrugated edge. The major axis is 3mm and the minor axis is 1.5mm. The hole density is controlled at 3-5 holes / cm². The guide angle can be automatically adjusted, with an adjustment range of 0°→30°.

[0040] In the far end area 4, a flow-guiding louver-type opening structure is adopted, including louver holes 7 and blades. The louver holes 7 are 5cm long and 1cm wide, and the density is controlled at 1 hole / 10cm². The blade tilt angle in the louver hole 7 changes from 0° to 90°, and the external opening angle is greater than the internal opening angle.

[0041] The oxygen reduction component housing also includes a pressure sensor, a piezoelectric ceramic slider, and a stepper motor; The pressure sensors are respectively located at the midpoint of the transition zone 3 and the midpoint of the distal zone 4; the piezoelectric ceramic slider is embedded in the elliptical hole 6 of the transition zone 3, and the micro stepper motor is installed on the blade of the louver hole 7 in the distal zone 4.

[0042] During implementation, pressure sensors are used to monitor pressure values ​​in real time. When the pressure difference ΔP in the distal zone 4 is less than 0. When the pressure is 0.12 kPa, i.e. < 1.08 kPa, the micro stepper motor rotates, which drives the blades to rotate, increasing the opening angle of the louver hole 7, thereby reducing resistance; When the pressure difference ΔP in the transition zone 3 is greater than +0.225 kPa, i.e., the pressure is greater than 1.725 kPa, the piezoelectric ceramic slider moves, thereby adjusting the opening and closing angle of the elliptical hole 6 to reduce the flow, thereby enhancing the flow guidance, suppressing the airflow overshoot, and avoiding fiber damage.

[0043] The opening angle The dynamic formula is calculated as follows:

[0044] in, Based on the base angle (45°). The adjustment coefficient is 0.8° / Pa. The local pressure deviation is the difference between the value measured by the pressure sensor and the reference pressure. The reference pressure of the distal region 4 is 1.2 kPa, and the reference pressure of the transition region is 1.5 kPa.

[0045] Embodiment 4 of this utility model discloses a hollow fiber membrane module, including an oxygen reduction module shell based on region division as described in any of Embodiments 1-3.

[0046] Compared with the prior art, the beneficial effects of this utility model include at least the following: By dividing the housing into a proximal zone, a transition zone, and a distal zone along the airflow direction, and employing different opening structures and parameter designs for each zone, the airflow achieves suitable guiding and dispersing effects in different areas. This effectively reduces flow resistance, improves airflow stability, and reduces membrane surface shear force, thereby enhancing membrane module separation efficiency and extending service life. Furthermore, by integrating a regulating device, the airflow control acquires dynamic response capabilities, thus improving the system's adaptability and operational stability.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A housing for an oxygen reduction component based on region division, characterized in that: Including the shell (1), the shell (1) is divided into the following three regions along the gas flow direction according to the length ratio: the proximal region (2), the transition region (3) and the distal region (4); The proximal region (2) is the area within 15% of the length of the housing (1) from the gas inlet, and a plurality of circular openings (5) are provided in the proximal region (2); the transition region (3) is the area between 15% and 40% of the length of the housing (1), and a plurality of elliptical holes (6) are provided in the transition region (3); the distal region (4) is the area beyond 40% of the length of the housing (1) to the end, and a flow-guiding louver-type opening structure is adopted in the distal region (4).

2. The oxygen reduction component housing based on region division according to claim 1, characterized in that: The diameter of the circular opening (5) is 1.5-2.5 mm, the opening density is 15-20 holes / cm², and the guide angle is 0°.

3. The oxygen reduction component housing based on region division according to claim 1, characterized in that: The edge of the elliptical hole (6) has a corrugated structure, and the ratio of the major axis to the minor axis of the elliptical hole (6) is 2:

1.

4. The oxygen reduction component housing based on region division according to claim 3, characterized in that: The elliptical hole (6) has an opening density of 3-5 holes / cm² and a flow guide angle of 0° to 30°.

5. The oxygen reduction component housing based on region division according to claim 1, characterized in that: The flow-guiding louver type opening structure includes louver holes (7) and blades. The length-to-width ratio of the louver hole (7) is 5:1, and the opening density of the louver hole (7) is 1 hole / 10cm².

6. The oxygen reduction component housing based on region division according to claim 5, characterized in that: The blade tilt angle in the louver hole (7) varies from 0° to 90°, and the blade opening angle near the transition zone (3) is greater than the blade opening angle away from the transition zone (3).

7. The oxygen reduction component housing based on region division according to claim 1, characterized in that: An adjustment device is also provided inside the housing (1), the adjustment device including: a pressure sensor and a micro actuator; The pressure sensor is connected to the micro actuator. The pressure sensor transmits the pressure data to the micro actuator. The micro actuator adjusts the opening angle of the louver hole (7) in the distal area (4) or the guide angle of the elliptical hole (6) in the transition area (3) according to the collected pressure data.

8. The oxygen reduction component housing based on region division according to claim 7, characterized in that: The micro actuator includes: a stepper motor and a piezoelectric ceramic slider; The piezoelectric ceramic slider is embedded in the elliptical hole (6) of the transition zone (3), and the stepper motor is mounted on the blade of the louver hole (7) in the distal zone (4).

9. The oxygen reduction component housing based on region division according to claim 8, characterized in that: The piezoelectric ceramic stretches and extends, causing the slider to move, thereby deflecting the major axis of the elliptical hole (6) by an angle of 0° to 30°; the stepper motor rotates, thereby causing the blade tilt angle to change by 0° to 90°.

10. A hollow fiber membrane assembly comprising the oxygen reduction assembly housing as described in any one of claims 1-9.

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