CN216726679U - Hollow fiber membrane bubble point pressure testing device and testing system - Google Patents
Hollow fiber membrane bubble point pressure testing device and testing system Download PDFInfo
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- CN216726679U CN216726679U CN202220178753.1U CN202220178753U CN216726679U CN 216726679 U CN216726679 U CN 216726679U CN 202220178753 U CN202220178753 U CN 202220178753U CN 216726679 U CN216726679 U CN 216726679U
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Abstract
The utility model provides a hollow fiber membrane bubble point pressure testing device and a testing system, wherein the hollow fiber membrane bubble point pressure testing device comprises: the device comprises a shooting unit, an identification unit and a statistic unit; the shooting unit is used for shooting the hollow fiber membrane module which is contained in the test liquid and connected with the gas supply unit and the adjacent area of the hollow fiber membrane module; the identification unit is respectively in communication connection with the shooting unit and the statistic unit and is used for identifying whether the image shot by the shooting unit contains bubbles or not; the identification unit sends out a trigger signal when identifying that the image contains bubbles; and the statistical unit acquires gas pressure data provided by the gas supply unit to the hollow fiber membrane module when receiving the trigger signal. The configuration has the advantages of high testing speed, accurate testing result and high automation degree.
Description
Technical Field
The utility model relates to the technical field of filter equipment, in particular to a hollow fiber membrane bubble point pressure testing device and a testing system.
Background
The membrane separation technology has the characteristics of high efficiency, energy conservation, no phase change, simple process, economy, environmental protection, easy control and the like, and the hollow fiber membrane has the unique advantages of large specific surface area, small occupied volume, self-support of the membrane, low production cost, low investment economy and the like, and is widely applied to the fields of sewage treatment, preparation of ultrapure water, hemodialyzer, separation of Chinese and western medicines, semiconductor industry, seawater desalination, artificial lung, organic solvent dehydration and the like.
In the practical application process, the bubble point pressure of the hollow fiber membrane is an important parameter, generally, nitrogen is adopted to gradually increase the pressure, and the pressure value generated by the bubble is observed and is defined as the bubble point pressure. However, the test method has limitations, and the measured bubble point pressure is inaccurate because the instantaneous pressure value of the generated bubbles cannot be well and synchronously observed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hollow fiber membrane bubble point pressure testing device and a testing system, and aims to solve the problems that the existing hollow fiber membrane bubble point pressure testing has limitation and is inaccurate in measurement.
In order to solve the above technical problem, the present invention provides a hollow fiber membrane bubble point pressure testing apparatus, which includes: the device comprises a shooting unit, an identification unit and a statistic unit;
the shooting unit is used for shooting the hollow fiber membrane module which is contained in the test liquid and connected with the gas supply unit and the adjacent area of the hollow fiber membrane module;
the identification unit is respectively in communication connection with the shooting unit and the statistical unit and is used for identifying whether the image shot by the shooting unit contains bubbles or not; the identification unit sends out a trigger signal when identifying that the image contains bubbles; and the statistical unit acquires gas pressure data provided by the gas supply unit to the hollow fiber membrane module when receiving the trigger signal.
Optionally, the hollow fiber membrane bubble point pressure testing device further comprises a flow regulating unit; the flow regulating unit is arranged between the gas supply unit and the hollow fiber membrane module and is used for regulating the gas pressure supplied to the hollow fiber membrane module.
Optionally, the hollow fiber membrane bubble point pressure testing device further comprises a logic unit; the logic unit is respectively in communication connection with the identification unit and the flow regulation unit; and the logic unit is used for driving the flow regulating unit to gradually increase the gas pressure provided for the hollow fiber membrane module according to a preset change rate before receiving the trigger signal.
Optionally, in the device for testing bubble point pressure of a hollow fiber membrane, the logic unit is configured to drive the flow rate adjustment unit to gradually decrease the gas pressure provided to the hollow fiber membrane module after receiving the trigger signal.
Optionally, in the hollow fiber membrane bubble point pressure testing apparatus, the predetermined change rate is selected from 1KPa/10s to 50KPa/10 s.
Optionally, in the device for testing bubble point pressure of a hollow fiber membrane, the logic unit is further configured to drive the flow rate adjustment unit to gradually increase the gas pressure provided to the hollow fiber membrane module to a predetermined maximum pressure, and then drive the flow rate adjustment unit to stop increasing the gas pressure provided to the hollow fiber membrane module, and send out warning information.
Optionally, the hollow fiber membrane bubble point pressure testing device further comprises a pressure detection unit; the pressure detection unit is in communication connection with the statistical unit; the pressure detection unit is used for detecting the gas pressure provided by the gas supply unit to the hollow fiber membrane module and sending real-time gas pressure data to the statistical unit.
Optionally, the hollow fiber membrane bubble point pressure testing device further includes a test slot for accommodating a testing liquid and a hollow fiber membrane assembly to be tested, the side wall of the test slot has a transparent area, and the shooting unit is disposed outside the test slot and shoots the hollow fiber membrane assembly through the transparent area.
Optionally, in the hollow fiber membrane bubble point pressure testing apparatus, the side wall of the test slot has more than two transparent regions arranged circumferentially, the hollow fiber membrane bubble point pressure testing apparatus includes more than two shooting units, and each shooting unit is aligned to one of the transparent regions.
In order to solve the above technical problem, the present invention further provides a hollow fiber membrane bubble point pressure testing system, which includes: the device comprises a hollow fiber membrane module, a test liquid, an air supply unit and the hollow fiber membrane bubble point pressure test device.
In summary, in the hollow fiber membrane bubble point pressure testing apparatus and the testing system provided by the present invention, the hollow fiber membrane bubble point pressure testing apparatus includes: the device comprises a shooting unit, an identification unit and a statistic unit; the shooting unit is used for shooting the hollow fiber membrane module which is contained in the test liquid and connected with the gas supply unit and the adjacent area of the hollow fiber membrane module; the identification unit is respectively in communication connection with the shooting unit and the statistic unit and is used for identifying whether the image shot by the shooting unit contains bubbles or not; the identification unit sends out a trigger signal when identifying that the image contains bubbles; and the statistical unit acquires gas pressure data provided by the gas supply unit to the hollow fiber membrane module when receiving the trigger signal.
With the configuration, the shooting unit is used for shooting the hollow fiber membrane module and the adjacent area thereof, when bubbles appear in the hollow fiber membrane module, the recognition unit recognizes that the images contain the bubbles and sends out the trigger signal, and the statistical unit can synchronously acquire the trigger signal and the gas pressure data, so that the bubble point pressure of the hollow fiber membrane module can be accurately measured. The test process is easy to operate, the measurement sensitivity is high, the test speed is high, the test result is accurate, and the automation degree is high.
Drawings
It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the utility model and do not constitute any limitation to the scope of the utility model. Wherein:
FIG. 1 is a schematic diagram of a hollow fiber membrane bubble point pressure test system according to an embodiment of the present invention.
In the drawings:
1-a test slot; 2-an air supply unit; 3-a shooting unit; 4-an identification unit; 51-a statistical unit; 52-a logic unit; 6-test solution; 7-a hollow fiber membrane module; 8-a flow regulating unit; 9-pressure detection unit.
Detailed Description
To further clarify the objects, advantages and features of the present invention, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are intended to be part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
As used in this application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a" and "an" are generally employed in a sense including "at least one," the terms "at least two" are generally employed in a sense including "two or more," and the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, which include not only the end points, but also the terms "mounted", "connected" and "connected" should be understood broadly, e.g., as a fixed connection, as a detachable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Furthermore, as used in the present invention, the disposition of an element with another element generally only means that there is a connection, coupling, fit or driving relationship between the two elements, and the connection, coupling, fit or driving relationship between the two elements may be direct or indirect through intermediate elements, and cannot be understood as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation inside, outside, above, below or to one side of another element, unless the content clearly indicates otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The utility model aims to provide a hollow fiber membrane bubble point pressure testing device and a testing system, and aims to solve the problems that the existing hollow fiber membrane bubble point pressure testing has limitation and is inaccurate in measurement.
Referring to fig. 1, an embodiment of the utility model provides a hollow fiber membrane bubble point pressure testing apparatus, which includes: an imaging unit 3, a recognition unit 4, and a statistic unit 51; the shooting unit 3 is used for shooting the hollow fiber membrane module 7 which is contained in the test solution 6 and connected with the gas supply unit 2 and the adjacent area of the hollow fiber membrane module 7; the identification unit 4 is in communication connection with the shooting unit 3 and the statistic unit 51 respectively, and the identification unit 4 is used for identifying whether bubbles are contained in the image shot by the shooting unit 3; the identification unit 4 sends out a trigger signal when identifying that the image contains bubbles; the statistical unit 51 obtains gas pressure data provided by the gas supply unit 2 to the hollow fiber membrane module 7 when receiving the trigger signal. In an example, the hollow fiber membrane bubble point pressure testing device further comprises a test slot 1, wherein the test slot 1 is used for accommodating a test solution 6 and a hollow fiber membrane assembly 7 to be tested.
With this arrangement, the imaging unit 3 images the hollow fiber membrane module 7 and the adjacent region thereof, and when the hollow fiber membrane module 7 emits a bubble, the recognition unit 4 recognizes that the image contains a bubble and sends a trigger signal, and the statistical unit 51 can acquire the trigger signal and the gas pressure data in synchronization with each other, thereby accurately measuring the bubble point pressure of the hollow fiber membrane module 7. The test process is easy to operate, the measurement sensitivity is high, the test speed is high, the test result is accurate, and the automation degree is high. The principle of the recognition unit 4 recognizing whether the image contains the bubble may include, for example: the steps of modeling, contour recognition, bubble determination, etc. can be understood according to the image processing and recognition principle in the prior art, and this embodiment will not be described again.
Optionally, the side wall of the test slot 1 has a transparent area, and the shooting unit 3 is disposed outside the test slot 1 and shoots the hollow fiber membrane module 7 through the transparent area. In some embodiments, the test slot 1 may be made entirely of a transparent material, e.g., the test slot 1 is a glass slot. The shooting unit 3 is arranged outside the test slot 1, so that the shooting unit 3 can be prevented from being immersed by the test solution 6, and the structure of the shooting unit 3 is simplified. In an exemplary embodiment, the statistical unit 51 may include a statistical control circuit board having a statistical control chip thereon or a statistical control program stored thereon. The photographing unit 3 may be a camera or a video camera as commonly used in the art.
Further, the side wall of the test slot 1 is provided with more than two transparent areas which are circumferentially arranged, the hollow fiber membrane bubble point pressure testing device comprises more than two shooting units 3, and each shooting unit 3 is aligned with one transparent area. With this arrangement, the hollow fiber membrane module 7 can be imaged in all directions in the circumferential direction, thereby further improving the accuracy of bubble point pressure measurement.
In an exemplary embodiment, the gas supply unit 2 includes a nitrogen cylinder with a certain pressure, and the testing solution 6 may be isopropyl alcohol or ethanol, for example, and those skilled in the art can select a suitable gas supply unit 2 and testing solution 6 according to the actual application.
Optionally, the hollow fiber membrane bubble point pressure testing device further includes: a flow rate adjusting unit 8; the flow rate adjusting unit 8 is disposed between the gas supply unit 2 and the hollow fiber membrane module 7, and is configured to adjust a gas pressure supplied to the hollow fiber membrane module 7. In an alternative example, the flow regulating unit 8 may for example comprise an electromagnetic flow valve, such as a proportional-integral valve.
Optionally, the hollow fiber membrane bubble point pressure testing apparatus further includes: further comprises a pressure detection unit 9; the pressure detection unit 9 is in communication connection with the statistic unit 51; the pressure detection unit 9 is configured to detect the gas pressure provided by the gas supply unit 2 to the hollow fiber membrane module 7, and send real-time gas pressure data to the statistics unit 51. In an alternative example, the pressure detecting unit 9 may include an electronic pressure gauge, for example, which is provided on the pipe between the flow rate adjusting unit 8 and the hollow fiber membrane module 7.
Further, the hollow fiber membrane bubble point pressure test device further comprises a logic unit 52; the logic unit 52 is in communication connection with the identification unit 4 and the flow regulating unit 8, respectively; the logic unit 52 is configured to drive the flow rate adjusting unit 8 at a predetermined change rate to gradually increase the pressure of the gas supplied to the hollow fiber membrane module 7 before receiving the trigger signal. The logic unit 52 may include a logic control circuit board having a logic control chip or a logic control program stored thereon, for example, and the logic unit 52 may be connected to the control end of the flow rate adjusting unit 8 through a wire, and sends a control signal to the control end of the flow rate adjusting unit 8, so as to drive the opening degree of the flow rate adjusting unit 8 to adjust, and thus adjust the gas pressure supplied to the hollow fiber membrane module 7. The predetermined rate of change may be a linear rate of change or a curvilinear rate of change, and the present embodiment is not particularly limited thereto. In one example, the predetermined rate of change is selected between 1KPa/10s and 50KPa/10 s. For example, the predetermined change rate is selected to be 10KPa/10s and is kept constant, that is, the pressure of the gas supplied to the hollow fiber membrane module 7 is linearly changed. In other embodiments, the predetermined rate of change may be configured to increase the gas pressure quickly first and then slowly, i.e., initially, to save testing time; and then the speed is gradually reduced and increased to ensure the testing precision during final bubble generation. In one example, the logic unit 52 and the statistic unit 51 may be integrated in a controller.
Optionally, the logic unit 52 is further configured to drive the flow rate adjusting unit 8 to stop increasing the gas pressure provided to the hollow fiber membrane module 7 and send an alarm message after driving the flow rate adjusting unit 8 to gradually increase the gas pressure provided to the hollow fiber membrane module 7 to a predetermined maximum pressure. The warning information can be a sound-light alarm signal and the like. The predetermined maximum pressure may be selected according to various specifications of the hollow fiber membrane module 7, and may be set to 1MPa, for example. With such a configuration, after the gas pressure rises to the predetermined maximum pressure, if no bubble is emitted from the hollow fiber membrane module 7, the pressure is stopped from being continuously increased, and a warning message is sent to prompt an operator to perform an inspection. In some special cases, sudden impact of the continuously increased gas pressure breaking through the hollow fiber membrane module 7 can be avoided.
Optionally, the logic unit 52 is configured to drive the flow rate adjusting unit 8 to gradually decrease the pressure of the gas supplied to the hollow fiber membrane module 7 after receiving the trigger signal. After receiving the trigger signal, it indicates that the statistic unit 51 has completed the test statistics on the bubble point pressure at this time, the pressure of the hollow fiber membrane assembly 7 may be gradually removed, so as to remove the hollow fiber membrane assembly 7 from the test slot 1, and then another hollow fiber membrane assembly 7 to be tested may be installed in the test slot 1. Alternatively, the logic unit 52 may drive the flow rate adjustment unit 8 to decrease the pressure of the gas supplied to the hollow fiber membrane module 7 to 0 (i.e., one atmosphere).
Based on the hollow fiber membrane bubble point pressure testing device, the present embodiment further provides a hollow fiber membrane bubble point pressure testing system, which includes the hollow fiber membrane module 7, the testing liquid 6, the air supply unit 2, and the hollow fiber membrane bubble point pressure testing device. Since the hollow fiber membrane bubble point pressure test system includes the hollow fiber membrane bubble point pressure test device as described above, it also has the advantageous effects of the hollow fiber membrane bubble point pressure test device as described above. Other structures and principles of the hollow fiber membrane bubble point pressure testing device can be referred to by those skilled in the art, and the description thereof in this embodiment is omitted.
In summary, in the hollow fiber membrane bubble point pressure testing apparatus and the testing system provided by the present invention, the hollow fiber membrane bubble point pressure testing apparatus includes: the device comprises a shooting unit, an identification unit and a statistic unit; the shooting unit is used for shooting the hollow fiber membrane module which is contained in the test liquid and connected with the gas supply unit and the adjacent area of the hollow fiber membrane module; the identification unit is respectively in communication connection with the shooting unit and the statistic unit and is used for identifying whether the image shot by the shooting unit contains bubbles or not; the identification unit sends out a trigger signal when identifying that the image contains bubbles; and the statistical unit acquires gas pressure data provided by the gas supply unit to the hollow fiber membrane module when receiving the trigger signal. With the configuration, the shooting unit is used for shooting the hollow fiber membrane module and the adjacent area thereof, when bubbles appear in the hollow fiber membrane module, the recognition unit recognizes that the images contain the bubbles and sends out the trigger signal, and the statistical unit can synchronously acquire the trigger signal and the gas pressure data, so that the bubble point pressure of the hollow fiber membrane module can be accurately measured. The test process is easy to operate, the measurement sensitivity is high, the test speed is high, the test result is accurate, and the automation degree is high.
It should be noted that, several of the above embodiments may be combined with each other. The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A hollow fiber membrane bubble point pressure test device, comprising: the device comprises a shooting unit, an identification unit and a statistic unit;
the shooting unit is used for shooting the hollow fiber membrane module which is contained in the test liquid and connected with the gas supply unit and the adjacent area of the hollow fiber membrane module;
the identification unit is respectively in communication connection with the shooting unit and the statistical unit and is used for identifying whether the image shot by the shooting unit contains bubbles or not; the identification unit sends out a trigger signal when identifying that the image contains bubbles; and the statistical unit acquires gas pressure data provided by the gas supply unit to the hollow fiber membrane module when receiving the trigger signal.
2. The hollow fiber membrane bubble point pressure test device of claim 1, further comprising a flow regulating unit; the flow regulating unit is arranged between the gas supply unit and the hollow fiber membrane module and is used for regulating the gas pressure supplied to the hollow fiber membrane module.
3. The hollow fiber membrane bubble point pressure test device of claim 2, further comprising a logic unit; the logic unit is respectively in communication connection with the identification unit and the flow regulation unit; and the logic unit is used for driving the flow regulating unit to gradually increase the gas pressure provided for the hollow fiber membrane module according to a preset change rate before receiving the trigger signal.
4. The hollow fiber membrane bubble point pressure testing device according to claim 3, wherein the logic unit is configured to drive the flow regulating unit to gradually decrease the gas pressure provided to the hollow fiber membrane module after receiving the trigger signal.
5. The hollow fiber membrane bubble point pressure test apparatus of claim 3, wherein the predetermined rate of change is selected between 1KPa/10s and 50KPa/10 s.
6. The hollow fiber membrane bubble point pressure test device according to claim 3, wherein the logic unit is further configured to drive the flow rate adjustment unit to stop increasing the gas pressure supplied to the hollow fiber membrane module and to issue an alarm message after driving the flow rate adjustment unit to gradually increase the gas pressure supplied to the hollow fiber membrane module to a predetermined maximum pressure.
7. The hollow fiber membrane bubble point pressure test device of claim 1, further comprising a pressure detection unit; the pressure detection unit is in communication connection with the statistical unit; the pressure detection unit is used for detecting the gas pressure provided by the gas supply unit to the hollow fiber membrane module and sending real-time gas pressure data to the statistical unit.
8. The hollow fiber membrane bubble point pressure testing device of claim 1, further comprising a test slot for accommodating a testing liquid and a hollow fiber membrane assembly to be tested, wherein a side wall of the test slot has a transparent area, and the shooting unit is disposed outside the test slot and shoots the hollow fiber membrane assembly through the transparent area.
9. The hollow fiber membrane bubble pressure testing device of claim 8, wherein the side walls of the test slot have more than two circumferentially arranged transparent regions, the hollow fiber membrane bubble pressure testing device comprising more than two of the camera units, each camera unit being aligned with one of the transparent regions.
10. A hollow fiber membrane bubble point pressure test system, comprising: a hollow fiber membrane module, a test liquid, an air supply unit, and the hollow fiber membrane bubble point pressure test apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220178753.1U CN216726679U (en) | 2022-01-21 | 2022-01-21 | Hollow fiber membrane bubble point pressure testing device and testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220178753.1U CN216726679U (en) | 2022-01-21 | 2022-01-21 | Hollow fiber membrane bubble point pressure testing device and testing system |
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| Publication Number | Publication Date |
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| CN216726679U true CN216726679U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220178753.1U Active CN216726679U (en) | 2022-01-21 | 2022-01-21 | Hollow fiber membrane bubble point pressure testing device and testing system |
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| CN (1) | CN216726679U (en) |
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- 2022-01-21 CN CN202220178753.1U patent/CN216726679U/en active Active
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Address after: Room 1015, building 1, No. 1601, Zhangdong Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201203 Patentee after: Chuangmai Medical Technology (Shanghai) Co.,Ltd. Patentee after: Zhejiang Maitong Intelligent Manufacturing Technology (Group) Co.,Ltd. Address before: Room 1015, building 1, No. 1601, Zhangdong Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201203 Patentee before: Chuangmai Medical Technology (Shanghai) Co.,Ltd. Patentee before: MAITONG MEDICAL TECHNOLOGY (JIAXING) Co.,Ltd. |
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