Absorbent interface identification device and CO2 two-phase absorbent interface identification system

Abstract

The utility model relates to an absorbent interface recognition device and a CO2 two-phase absorbent interface recognition system, the absorbent interface recognition device is used for performing interface recognition on a reaction container containing a CO2 absorbent solution, the reaction container is provided with a recognition window, and the absorbent interface recognition device comprises an imaging unit, a light supplementing unit and a control unit; the imaging unit comprises a camera and a camera light shield, the camera light shield covers the side wall of the reaction container and completely shields the identification window, and the camera is used for photographing the boundary position of the identification window for image acquisition; the light supplementing unit comprises a light supplementing lamp installed in the camera light shield, the irradiation direction of the light supplementing lamp faces the recognition window, and the light supplementing lamp is used for photographing light supplementing. The camera and the light supplementing lamp are electrically connected with the control unit. Effective and reliable collection of interface image data can be ensured, meanwhile, the accuracy of the image data is ensured, and a stable image basis is provided for analysis and detection.

Description

Technical Field

[0001] This application relates to the technical field of interface level recognition, and more specifically, to an absorbent interface level recognition device and a CO2 two-phase absorbent interface level recognition system. Background Art

[0002] Among carbon dioxide absorbents, the chemical absorption method is the most widely used carbon dioxide capture technology at present, and mixed amine absorbents are the mainstream. For example, monoethanolamine absorbents are widely used, but their regeneration energy consumption is relatively high. To reduce energy consumption, new types of two-phase absorbents have emerged continuously, such as solid-liquid two-phase absorbents, which generate powdery products after absorbing carbon dioxide and are easy to separate, but the products have high viscosity and are difficult to separate, so they are less used. Liquid-liquid two-phase absorbents are the development trend of technology and are widely promoted due to their advantages such as high absorption efficiency, low energy consumption, and convenient operation and management.

[0003] Currently, in the industrial production process, it is often necessary to accurately detect the interface positions of different media, such as liquid levels and material levels. Traditional detection methods include contact sensors such as float sensors, and non-contact sensors such as laser or ultrasonic detection. There are often problems such as low accuracy, slow response speed, susceptibility to environmental interference, and limited application range.

[0004] Contact sensors are susceptible to medium corrosion and have high installation and maintenance costs. The existing interface position detection devices on the market have poor application effects in the interface level recognition of CO2 two-phase absorbents. Therefore, in view of the above problems, a non-contact interface level analysis and detection system based on AI recognition has been proposed in the prior art. Through a deep learning model, adaptive interface level recognition in multiple scenarios is realized, and a hardware linkage system is introduced to achieve alarm and control actions, so as to achieve high-precision, real-time detection and early warning processing of different media interfaces. An industrial machine vision device for interface level recognition of reactants in a kettle under extremely harsh working conditions.

[0005] However, although the non-contact interface level analysis and detection based on AI recognition is an effective interface level recognition method, without the support of a corresponding hardware system, how to ensure the accuracy, reliability, and stability of image data collection during the detection process is a technical problem that needs to be considered. Summary of the Utility Model

[0006] The purpose of this application is to provide an absorbent interface level recognition device and a CO2 two-phase absorbent interface level recognition system, which can provide hardware system support for non-contact interface level analysis and detection based on AI recognition, ensure the effective and reliable collection of interface level image data, and at the same time ensure the accuracy of the image data, providing a stable image basis for analysis and detection.

[0007] To achieve the above object, in a first aspect, the present utility model provides an absorbent liquid level identification device for identifying the liquid level of a reaction vessel filled with a CO2 absorbent solution. An identification window is provided on the reaction vessel, and the absorbent liquid level identification device includes an imaging unit, a supplementary lighting unit, and a control unit;

[0008] The imaging unit includes a camera and a camera light shield. The camera light shield is snap-fitted and installed on the side wall of the reaction vessel and completely shields the identification window. The camera is used to take pictures of the liquid level of the identification window for image acquisition;

[0009] The supplementary lighting unit includes a supplementary light lamp installed inside the camera light shield. The irradiation direction of the supplementary light lamp is set towards the identification window for supplementary lighting during photographing;

[0010] The camera and the supplementary light lamp are respectively electrically connected to the control unit, enabling the control unit to control the camera to take pictures of the identification window and enabling the camera to transmit the obtained liquid level image signal to the control unit.

[0011] In an optional embodiment, the identification window includes a long strip-shaped window arranged along the height direction of the reaction vessel, and a fixing member for installing the camera light shield is provided on the side wall of the reaction vessel.

[0012] In an optional embodiment, the camera light shield includes a square conical structure. The camera is installed at the tapered port of the camera light shield, and the tapered port of the camera light shield is closed and snap-fitted on the side wall of the reaction vessel.

[0013] In an optional embodiment, a camera waterproof chamber is connected to the tapered port of the camera light shield, and the camera is installed inside the camera waterproof chamber.

[0014] In an optional embodiment, the camera waterproof chamber includes a waterproof chamber bottom shell and a waterproof chamber outer cover. The waterproof chamber bottom shell is connected to the tapered port of the camera light shield. The waterproof chamber outer cover is detachably connected to the waterproof chamber bottom shell. The waterproof chamber bottom shell is connected with a camera fixing bracket for installing the camera, and the camera fixing bracket is installed inside the camera waterproof chamber.

[0015] In an optional embodiment, the supplementary light lamp includes a photographing supplementary light lamp and a light-transmitting supplementary light lamp. The photographing supplementary light lamp is installed inside the camera light shield;

[0016] On the other side of the reaction vessel relative to the identification window, a light-transmitting window is provided. The light-transmitting supplementary light is arranged at the position of the light-transmitting window, and a supplementary light shading cover is installed by buckling on the outside of the light-transmitting supplementary light. The supplementary light shading cover is hermetically buckled on the side wall of the reaction vessel.

[0017] In an alternative embodiment, there are two paired photo-taking supplementary lights, which are symmetrically arranged on the left and right sides of the identification window. The irradiation direction of the photo-taking supplementary lights is inclined relative to the central plane of the camera shading cover, and the inclination directions intersect at the position of the identification window.

[0018] In an alternative embodiment, the axes of the light-transmitting window, the identification window, and the camera are located in the same plane.

[0019] In an alternative embodiment, the plane coincides with the central plane of the camera shading cover.

[0020] In a second aspect, the present utility model provides a CO2 two-phase absorbent interface level identification system, including the absorbent interface level identification device described in any one of the foregoing embodiments.

[0021] The absorbent interface level identification device in the present utility model is mainly used for identifying the interface level of a reaction vessel filled with a CO2 absorbent solution.

[0022] By providing an identification window on the reaction vessel, and setting an imaging unit, a supplementary light unit, and a control unit, it is possible to respectively take pictures of the two-phase absorbent interface level at the position of the identification window inside the reaction vessel for image acquisition, supplement light to ensure the accuracy of the acquired images, and transmit the image data obtained by taking pictures, which can be processed by a non-contact interface level analysis and detection system based on AI recognition, so that the analysis and detection system can be used as an effective interface level identification means to ensure accurate detection of the positions of different medium interfaces.

[0023] The present utility model can serve as a reliable hardware support for a non-contact interface level analysis and detection system based on AI recognition, thereby ensuring the accuracy and reliability of the acquired images, and providing effective and reliable image data support for the analysis and detection system.

[0024] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of the split structure of the absorbent interface level identification device in the present application;

[0027] Figure 2 It is a schematic diagram of the three-dimensional angle structure of the absorbent interface level identification device;

[0028] Figure 3 It is a schematic diagram of the side view structure of the absorbent interface level identification device.

[0029] Icon:

[0030] 1 - Reaction vessel; 11 - Identification window; 12 - Auxiliary window;

[0031] 2 - Camera;

[0032] 3 - Camera light shield; 31 - Tapered port; 32 - Flared port;

[0033] 4 - Fill light; 41 - Photograph fill light; 42 - Translucent fill light; 43 - Fill light shield;

[0034] 5 - Camera waterproof housing; 51 - Waterproof housing bottom shell; 52 - Waterproof housing outer cover; 53 - Camera fixing bracket. Detailed implementation manners

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present application, it should also be noted that, unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0038] The absorbent interface level identification device in the present application mainly serves as the hardware support structure of the non-contact interface level analysis and detection system based on AI recognition in the prior art. By arranging necessary imaging, light supplementing, and control structures, etc., it ensures the accurate acquisition of the interface level image of the two-phase absorbent inside the reaction vessel, and ensures the authenticity and effectiveness of the image data during the analysis and detection process.

[0039] In the prior art, there is a form of real-time detection of the position of the two-phase liquid-liquid interface by recognizing the dynamic image of the two-phase liquid-liquid interface based on AI recognition, so as to perform high-precision real-time detection and early warning processing on different medium interfaces.

[0040] The key improvement in the present utility model lies in highlighting the structural composition of image acquisition, specifically for identifying the interface level of the reaction vessel filled with CO2 absorbent solution, and is used in the carbon dioxide capture system to realize the process control during the carbon dioxide absorption process by monitoring the interface of the liquid-liquid two-phase absorbent inside the reaction vessel.

[0041] See Figure 1 and in combination with Figures 2 - 3 Specifically speaking, the absorbent interface level identification device in the present application is mainly used to collect images of the identification window 11 provided on the reaction vessel 1. Based on the fact that the reaction vessel 1 is filled with CO2 absorbent solution, the position of the liquid-liquid two-phase interface can be directly displayed at the identification window 11.

[0042] Through the imaging unit, light supplementing unit, and control unit included in the absorbent interface level identification device, the dynamic real-time monitoring of the liquid-liquid two-phase interface level is carried out, including respectively taking pictures of the liquid-liquid two-phase interface level at the identification window 11 and collecting the image data of different liquid-liquid two-phase interface levels during dynamic changes; supplementing light during the picture-taking process to maintain the clarity and accuracy of the collected images; controlling the picture-taking action of the camera 2 and the opening and closing states of the light supplementing lamp 4 through the control unit, and realizing the acquisition and transmission of image data, and transmitting the image data to the analysis and detection system for processing.

[0043] Based on this, the imaging unit includes a camera 2 and a camera hood 3. The camera 2 is used to collect images of the liquid-liquid two-phase interface at the window 11. The camera hood 3 is used to completely seal the shooting space and area of ​​the camera 2 to prevent external light from affecting the image obtained by shooting.

[0044] The camera hood 3 is buckled and installed on the side wall of the reaction container 1, and completely covers the identification window 11, forming a dark closed space in a completely closed state. At the same time, based on the setting of the fill light unit, the camera 2 is supplemented with light independently, so that the camera 2 can collect images of the liquid-liquid two-phase boundary at the identification window 11 in an independent closed space and with independent light supplement, thereby ensuring the accuracy and reliability of the collected images.

[0045] The camera 2 is supplemented with light based on the fill light unit. The fill light unit includes a fill light 4 installed inside the camera hood 3. The irradiation direction of the fill light 4 is set toward the identification window 11 for supplementary light for photographing. By irradiating the identification window 11 with the fill light 4, the clarity of the liquid-liquid two-phase interface at the identification window 11 can be ensured, while preventing the light of the fill light 4 from affecting the photographing of the camera 2.

[0046] The camera 2 and the fill light 4 are electrically connected to the control unit respectively, so that the control unit can control the shooting action of the camera 2 and the on / off state of the fill light 4, and then the camera 2 can transmit the interface image signal obtained by shooting to the control unit for further analysis and processing.

[0047] Based on the CO2 absorbent solution contained in the reaction container 1, in order to ensure the direct display of the interface in the identification window 11, the identification window 11 includes a long strip window arranged along the height direction of the reaction container 1, which can directly display the height change of the liquid-liquid two-phase interface through the long strip window structure.

[0048] At the same time, in order to enable the camera hood 3 to completely shield the identification window 11, a fixing piece is provided on the side wall of the reaction container 1 where the identification window 11 is located, for mounting the camera hood 3, so as to ensure complete shielding of the identification window 11. Specifically, a straight-edge flange is provided at the edge of the camera hood 3, and the fixing piece includes a bolt connected to the side wall of the reaction container 1, and a plurality of mounting holes are provided on the straight-edge flange. Through the docking of the straight-edge flange and the bolt, the camera hood 3 can be mounted on the side wall of the reaction container 1 through fasteners such as nuts.

[0049] The camera hood 3 includes a square cone structure, which can be conducive to forming an installation space for the fill light 4, while ensuring the cover area on the side wall of the reaction container 1, and also avoiding the installation of the fill light 4 from causing spatial obstruction to the camera 2 when taking pictures.

[0050] The camera light shield 3 includes a tapered port 31 and a flared port 32. Based on the structure of the trumpet-shaped camera light shield 3, the camera 2 is installed at the tapered port 31 of the camera light shield 3, with the photographing direction of the camera 2 facing the recognition window 11, ensuring accurate image acquisition of the liquid-liquid two-phase interface position at the window part.

[0051] The flared port 32 of the camera light shield 3 is hermetically covered on the side wall of the reaction vessel 1, ensuring the enclosed area and ensuring that the recognition window 11 can be completely enclosed.

[0052] To ensure the reliability of the camera 2 during use, a camera waterproof chamber 5 is connected to the tapered port 31 of the camera light shield 3, and the camera 2 and the necessary switching power supply are installed inside the camera waterproof chamber 5.

[0053] In the present utility model, the lateral spanning distance of the camera light shield 3 relative to the reaction vessel 1 is small, so the camera light shield 3 can be directly covered and installed on the reaction vessel 1. At the same time, based on the connection between the two and the loading weight of the absorbent solution in the reaction vessel 1, the overall structural stability of the camera light shield 3, the camera waterproof chamber 5, and the necessary equipment can be ensured.

[0054] From this perspective, the camera waterproof chamber 5 includes a waterproof chamber bottom shell 51 and a waterproof chamber outer cover 52. The waterproof chamber bottom shell 51 is directly connected to the tapered port 31 of the camera light shield 3, reducing the additional support structure.

[0055] It should be noted that for different structural forms of the camera light shield 3 and the camera waterproof chamber 5, necessary support columns can also be set, and the camera waterproof chamber 5 is installed on the support columns, which can combine the connection between the camera waterproof chamber 5 and the camera light shield 3, and the connection between the camera waterproof chamber 5 and the reaction vessel 1 to achieve the effect of stable and balanced support.

[0056] From the perspective of facilitating the maintenance of the camera 2, the waterproof chamber outer cover 52 is detachably connected to the waterproof chamber bottom shell 51 through a connector. The waterproof chamber bottom shell 51 is connected with a camera fixing bracket 53 for installing the camera 2 to maintain the stability of the installation of the camera 2. Combining the installation of the camera fixing bracket 53 inside the camera waterproof chamber 5, the camera 2 can be stably installed in the enclosed space formed by the waterproof chamber bottom shell 51 and the waterproof chamber outer cover 52.

[0057] During the image acquisition process, in order to more clearly highlight the interface position in the reaction vessel 1, a light-transmitting window (not shown in the figure) needs to be set on the other side opposite to the recognition window 11. At the same time, necessary supplementary lights 4 are set to irradiate at the light-transmitting window part, making the boundary of different two-phase liquid-liquid interfaces more obvious and direct under the simultaneous contrast of the front and back windows.

[0058] The supplementary light 4 includes a photographing supplementary light 41 and a light-transmitting supplementary light 42, which are respectively used for normal photographing and light transmission on the other side.

[0059] The photographing supplementary light 41 is installed inside the camera lens hood 3, specifically on the inner walls of the inclined cover plates on the left and right sides of the camera lens hood 3. It includes two pairs arranged symmetrically on the left and right sides of the recognition window 11, which can avoid blocking the photographing range of the camera 2.

[0060] The irradiation direction of the photographing supplementary light 41 is inclined relative to the central plane of the camera lens hood 3, and the inclined directions intersect at the part of the recognition window 11.

[0061] During specific operation, both of the two photographing supplementary lights 41 can irradiate and supplement light to the part of the recognition window 11. They can be in the form of one on and one standby, or can be turned on simultaneously to ensure sufficient light.

[0062] From the perspective of light transmission, a light-transmitting window is provided on the other side of the reaction vessel 1 relative to the recognition window 11. The light-transmitting supplementary light 42 is arranged at the position of the light-transmitting window, and a supplementary light hood 43 is installed outside the light-transmitting supplementary light 42. The supplementary light hood 43 is hermetically covered on the side wall of the reaction vessel 1.

[0063] Through this setting method, the light of the light-transmitting supplementary light 42 can be irradiated into the reaction vessel 1 through the narrow light-transmitting window, and irradiate the absorbent solution in the reaction vessel 1 at the position opposite to the recognition window 11. At the same time, based on the hermetic covering of the supplementary light hood 43, excessive light of the light-transmitting supplementary light 42 can be prevented from passing through the recognition window 11, reducing the impact on photographing.

[0064] In the present utility model, the axes of the light-transmitting window, the recognition window 11 and the camera 2 are located in the same plane, which can ensure that the photographing part of the camera 2 is directly opposite to the light-transmitting window and the recognition window 11. Combining the dual effects of light supplement and light transmission of the photographing supplementary light 41 and the light-transmitting supplementary light 42, it ensures the clarity and effectiveness of the photographed image.

[0065] Furthermore, the plane where the axes of the light-transmitting window, the recognition window 11 and the camera 2 are located coincides with the central plane of the camera lens hood 3, which can ensure that the camera lens hood 3 and the two windows are maintained in the photographing direction of the camera 2.

[0066] The control unit further includes a control cabinet, which is provided with a touch screen, an indicator light, a computer interface and a control switch to keep the normal control of the control unit during photographing.

[0067] In the present utility model, an auxiliary window 12 located outside the camera light shield 3 is further provided on the reaction vessel 1, which is conducive to the operator visually observing the interface level at the on-site inspection, so as to perform auxiliary control in a timely manner in case of emergencies.

[0068] The camera waterproof bin 5, the camera light shield 3, and the fill light shield 43 can be processed by stainless steel plates with a thickness of 1-2 mm. The photograph fill light 41 and the light-transmitting fill light 42 can be tubes with a power of 30 W and a length of about 1 m for illumination. At the connection part between the light shield and the reaction vessel 1 and at the assembly parts with different structures of the camera waterproof bin 5, necessary sealing components are provided to ensure effective and reliable sealing.

[0069] During use, start the fill light 4 to provide appropriate light source for the camera 2 to take pictures. Start the switch through the control cabinet, set the program, and turn on the camera 2. The camera 2 takes pictures of the liquid phase situation in the reaction vessel 1 at the frequency set by the program. The captured picture materials are converted into image signals and transmitted to the non-contact interface analysis and detection system for AI recognition. A database is established and data iteration is carried out through the AI deep learning model. After the picture information captured by the camera 2 is transferred, the AI quickly compares it with the previously photographed reactant interface. The AI combines experience to give the accurate interface position, and manual confirmation is carried out according to the cycle set by the program, and continuous learning is carried out until the automatic detection of the interface level can be carried out.

[0070] The camera 2 takes pictures and feeds back image information according to the frequency set by the program. The analysis and detection system makes comparisons and judgments, and feeds back the judged interface information to the process control module of the reaction vessel 1 at any time. The process control module makes real-time adjustments to the operating equipment.

[0071] When the interface level of the adsorbent solution exceeds the preset boundary and reaches the warning standard, the alarm system is started. The alarm system is linked with the equipment control system to suspend the system operation and control the reactants inside the reaction vessel 1. During the operation of the equipment, all photos are saved for the continuous learning of the AI large model and the comparison by on-site personnel, and the real-time reactant interface level situation of the reaction vessel 1 can be viewed by clicking on the control cabinet screen.

[0072] The above process is only for explaining the overall process. The description related to algorithms is not within the technical scope of the present utility model and is explained here.

[0073] The present utility model also provides a CO2 two-phase absorbent interface recognition system, including the absorbent interface recognition device described above, which can avoid the problems of contact corrosion and easy aging of the contact detection device, as well as the strict requirements for the material of the detection device under acid-base or corrosive conditions, and meet the process requirements of the carbon dioxide capture system.

[0074] It should be noted that, without conflict, the features in the embodiments of the present application may be combined with each other.

[0075] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An absorbent liquid level identification device for identifying the liquid level of a reaction vessel filled with a CO2 absorbent solution, characterized in that An identification window is provided on the reaction vessel, and the absorbent level identification device includes an imaging unit, a supplementary lighting unit, and a control unit; The imaging unit includes a camera and a camera light shield. The camera light shield is snap-fitted and installed on the side wall of the reaction vessel and completely shields the identification window. The camera is used to take pictures of the level of the identification window for image acquisition; The supplementary lighting unit includes a supplementary light lamp installed inside the camera light shield. The irradiation direction of the supplementary light lamp is set towards the identification window for supplementary lighting during photographing; The camera and the supplementary light lamp are respectively electrically connected to the control unit.

2. The absorbent interface level identification device according to claim 1, characterized in that, The identification window includes a long strip-shaped window arranged along the height direction of the reaction vessel, and a fixing member for installing the camera light shield is provided on the side wall of the reaction vessel.

3. The absorbent interface level identification device according to claim 1, characterized in that The camera light shield includes a square conical structure. The camera is installed at the tapered port of the camera light shield, and the tapered port of the camera light shield is closed and snap-fitted on the side wall of the reaction vessel.

4. The absorbent interface level identification device according to claim 3, wherein, A camera waterproof chamber is connected to the tapered port of the camera light shield, and the camera is installed inside the camera waterproof chamber.

5. The absorbent interface level identification device according to claim 4, characterized in that, The camera waterproof chamber includes a waterproof chamber bottom shell and a waterproof chamber outer cover. The waterproof chamber bottom shell is connected to the tapered port of the camera light shield, the waterproof chamber outer cover is detachably connected to the waterproof chamber bottom shell, the waterproof chamber bottom shell is connected with a camera fixing bracket for installing the camera, and the camera fixing bracket is installed inside the camera waterproof chamber.

6. The absorbent interface level identification device according to claim 1, characterized in that The supplementary light lamp includes a photographing supplementary light lamp and a light-transmitting supplementary light lamp. The photographing supplementary light lamp is installed inside the camera light shield; On the other side of the reaction vessel relative to the identification window, a light-transmitting window is provided. The light-transmitting supplementary light lamp is arranged at the position of the light-transmitting window, and a supplementary light lamp light shield is snap-fitted and installed outside the light-transmitting supplementary light lamp. The supplementary light lamp light shield is closed and snap-fitted on the side wall of the reaction vessel.

7. The absorbent interface level identification device according to claim 6, characterized in that, The photographing supplementary light lamps include two arranged in pairs and symmetrically arranged on the left and right sides of the identification window. The irradiation direction of the photographing supplementary light lamp is inclined relative to the central plane of the camera light shield, and the inclined directions intersect at the position of the identification window.

8. The absorbent interface level identification device according to claim 6, characterized in that, The axes of the light-transmitting window, the identification window, and the camera are located in the same plane.

9. The absorbent interface level identification device according to claim 8, characterized in that, This plane coincides with the central plane of the camera light shield.

10. A CO2 two-phase absorbent interface level identification system, characterized in that, It includes the absorbent level identification device according to any one of claims 1-9.

Images