Intelligent monitoring system for photostability of organic solution standard substances in methanol

Abstract

The present invention discloses an intelligent monitoring system for the photostability of standard substances of organic solutions in methanol, relates to the field of sampling monitoring technology, comprises a base and a circulating pump 2, a light source mechanism is installed on the base, a disc box is installed on the light source mechanism, one end of the circulating pump 2 is connected to the right side of the top of the box cavity of the disc box through a deoxidation component, the other end of the circulating pump 2 is connected to the left side of the top of the box cavity of the disc box through a temperature control component, the upper and lower centers of the disc box are connected by a pipe 1, a valve 1 and a circulating pump 1 are respectively provided on the pipe 1, and the pipe 1 is also connected to a monitoring mechanism, the top of the disc box cavity is provided with an arc-shaped guide plate, the center of the disc box bottom is also provided with a bubbling mechanism, the disc box disk surface is also provided with a temperature control disc, and the upper end of the disc box is connected with a liquid guide port. The present invention can improve the uniformity and stability of the solution, automatically adjust the nitrogen supplement, maintain pressure and temperature compensation, and cooperate with the monitoring mechanism to complete the absorbance, pH and other parameter detection online.

Description

Technical Field

[0001] The invention relates to the technical field of sampling monitoring, in particular to an intelligent monitoring system for the photostability of standard substances in organic solutions in methanol. Background Art

[0002] In the fields of chemistry, pharmaceuticals, and materials science, the photostability of reference materials requires evaluation and quality control. Methanol, a common solvent, is susceptible to photodegradation and photooxidation reactions in organic solutions and photosensitive reference materials under illumination. This can lead to changes in the concentration or chemical properties of the reference materials, directly impacting the reliability of experimental data. Currently, most traditional photostability monitoring systems rely solely on static illumination testing, lacking dynamic control of key factors such as oxygen and temperature. These systems are unable to simulate real-world reaction conditions (e.g., sealed storage or open environments). During illumination, solutions are prone to uneven distribution due to local temperature differences or material sedimentation. Traditional stirring or circulation methods can introduce bubbles or disturbances, interfering with optical monitoring accuracy. Existing deoxygenation techniques (e.g., inert gas replacement) struggle to maintain a continuous oxygen-free environment within the circulation system and are not integrated with temperature control or light intensity regulation, resulting in residual oxygen interfering with photochemical reactions. Furthermore, these methods rely on manual sampling and offline analysis (e.g., HPLC), which can lead to data lag and cumbersome operations, making real-time monitoring and early warning difficult.

[0003] Therefore, it is necessary to provide an intelligent monitoring system for the photostability of standard substances in organic solutions in methanol to solve the problems raised in the above background technology. Summary of the Invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an intelligent monitoring system for the photostability of standard substances of organic solutions in methanol, comprising a base and a circulating pump 2, a light source mechanism being installed on the base, a disk box being installed on the light source mechanism, one end of the circulating pump 2 being connected to the right side of the top of the disk box cavity through a deoxidation component, and the other end of the circulating pump 2 being connected to the left side of the top of the disk box cavity through a temperature control component, the upper and lower centers of the disk box being connected by a pipe 1, a valve 1 and a circulating pump 1 being respectively provided on the pipe 1, and a monitoring mechanism being further connected to the pipe 1, an arc-shaped guide plate being provided at the top of the disk box cavity, a bubbling mechanism being further provided at the center of the bottom of the disk box, a temperature control disk being further provided on the disk box surface, and a liquid guide port being connected to the upper end of the disk box.

[0005] Furthermore, the deoxidation component includes a tank 1, a collecting box 1 is installed at the upper end of the tank cavity of the tank 1, the upper end of the collecting box 1 is connected to an inlet 1, a collecting pipe 1 is installed in the center of the tank cavity of the tank 1, the upper end of the collecting pipe 1 is connected to an outlet 1, a lower end of the collecting box is connected to multiple branch pipes 1 connected to the lower end of the collecting pipe, the lower end of the tank is connected to the right side of the top of the tank cavity of the disk box through an inlet pipe 1, the upper end of the tank 1 is connected to one end of a circulating pump 2 through an outlet pipe 1, and the lower end of the tank is also connected to the top of the tank cavity of the disk box through a return pipe, an iron wire is installed in the outlet pipe 1, and a controller 1 connected to the iron wire is provided on the outer wall of the outlet pipe 1.

[0006] Furthermore, a temperature control tube is installed in the return pipe, and a second controller connected to the temperature control tube is provided on the outer wall of the return pipe.

[0007] Furthermore, the temperature control component includes tank two, and a collecting box two is installed at the upper end of the tank cavity of tank two, and the upper end of the collecting box two is connected to an inlet two, and a collecting pipe two is installed in the center of the tank cavity of tank two, and the upper end of the collecting pipe two is connected to an outlet two, and the lower end of the collecting box two is connected to a plurality of branch pipes connected to the lower end of the collecting pipe two, the upper end of the tank two is connected to the other end of the circulating pump two through the inlet pipe two, and the lower end of the tank two is connected to the left side of the top of the disk box cavity through the outlet pipe two, and an exhaust valve is also provided on the tank two.

[0008] Furthermore, the second tank cavity is connected to a nitrogen tank.

[0009] Furthermore, the arc-shaped end surface of the guide plate is provided with a plurality of flow holes.

[0010] Furthermore, a temperature and pressure sensor is provided on the top of the disk box cavity.

[0011] Furthermore, the foaming mechanism includes a connecting plate and an arc-shaped orifice plate. The connecting plate is installed on the outside of the lower end of the disk box, and the orifice plate is installed at the bottom center of the disk box cavity. The two ends of the orifice plate are connected to the disk box wall through flexible sheets respectively. A sliding hole is also provided on the box wall of the disk box, and a sliding rod slides on the sliding hole. The upper end of the sliding rod is connected to the orifice plate, and the lower end of the sliding rod is connected to the connecting plate through a spring.

[0012] Furthermore, the monitoring mechanism includes a pipe 2 connected to the pipe 1, a valve 2 is provided on the pipe 2, a carrier connected to the pipe 2 is provided on the base, a motor is provided at the center of the carrier, a carrier plate is provided at the lower end of the motor, the carrier plate is provided with a sampling cup corresponding to the pipe 2, and a monitor corresponding to the sampling cup is also provided on the carrier.

[0013] Compared with the prior art, the present invention provides an intelligent monitoring system for the photostability of standard substances of organic solutions in methanol, which has the following beneficial effects: the present invention directly removes oxygen from the circulating gas by adopting a high-temperature iron wire reactor, combines condensation dehydration with nitrogen compensation, realizes dynamic control of oxygen concentration, avoids interference from photooxidation reaction, ensures the stability of solution and gas temperature through the temperature control disk, temperature control assembly and temperature control tube in the reflux pipe, reduces the influence of thermal effect on photodegradation rate, and enables precise temperature control.

[0014] In the present invention, the arc-shaped guide plate and the narrow upper arc cavity are designed to guide the solution to flow smoothly into the box cavity of the disk box, reducing the circulation impact; the flow is dispersed by the flow holes to avoid bubble generation and ensure uniform distribution of the substance. Microbubbles are periodically released through the orifice plate to achieve solution mixing when the light source is turned off, which not only improves uniformity but also avoids the scattering interference of bubbles on light, thereby improving the uniformity and stability of the solution.

[0015] In the present invention, the closed-loop flow of solution and gas is achieved by linking the first and second circulating pumps. In combination with the real-time feedback of the temperature and pressure sensors, the nitrogen replenishment is automatically adjusted to maintain pressure and temperature compensation. The automatic sampling of the carrier plate is driven by a motor, and the absorbance, pH and other parameters are detected in conjunction with the online monitor, thereby reducing human operation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the monitoring system of the present invention;

[0017] Figure 2 Schematic diagram of the structure of the temperature and pressure sensor of the present invention;

[0018] Figure 3 Schematic diagram of the structure of the sliding hole in the present invention;

[0019] Figure 4 Schematic diagram of the structure of the foaming mechanism of the present invention;

[0020] Figure 5 Schematic diagram of the structure of the flow hole in the present invention;

[0021] Figure 6 Schematic diagram of the structure of the monitoring mechanism in the present invention;

[0022] Figure 7 Schematic diagram of the structure of the nitrogen tank in the present invention;

[0023] Figure 8 Schematic diagram of the structure of the deoxidation component and the temperature control component in the present invention;

[0024] In the figure: 1, base; 2, light source mechanism; 3, tray box; 4, temperature control tray; 5, pipeline 1; 6, monitoring mechanism; 7, liquid guide port; 8, circulation pump 2; 9, bubbling mechanism; 10, temperature and pressure sensor; 11, guide plate; 31, sliding hole; 51, circulation pump 1; 52, valve 1; 61, pipeline 2; 62, valve 2; 63, carrier; 64, motor; 65, carrier tray; 66, sampling cup; 67, monitor; 81, deoxidation component; 82, temperature control component; 811, tank 1; 812, collecting box 1; 813, inlet 1; 814, collecting pipe 1; 815, Branch pipe one; 816, outlet one; 817, inlet pipe one; 818, outlet pipe one; 819, reflux pipe; 8181, controller one; 8182, iron wire; 8191, controller two; 8192, temperature control tube; 821, tank two; 822, collecting box two; 823, inlet two; 824, collecting pipe two; 825, branch pipe two; 826, outlet two; 827, inlet pipe two; 828, outlet pipe two; 829, nitrogen tank; 8210, exhaust valve; 91, orifice plate; 92, flexible sheet; 93, connecting plate; 94, sliding rod; 95, spring; 111, flow hole. DETAILED DESCRIPTION

[0025] Reference Figures 1-8 , an intelligent monitoring system for the photostability of standard substances of organic solutions in methanol, comprising a base 1 and a circulation pump 8, a light source mechanism 2 being installed on the base 1, a disk box 3 being installed on the light source mechanism 2, one end of the circulation pump 8 being connected to the right side of the top of the box cavity of the disk box 3 through a deoxidation component 81, the other end of the circulation pump 8 being connected to the left side of the top of the box cavity of the disk box 3 through a temperature control component 82, the upper and lower centers of the disk box 3 being connected through a pipe 5, a valve 52 and a circulation pump 51 being respectively provided on the pipe 5, and a monitoring mechanism 6 being further connected to the pipe 5, an arc-shaped guide plate 11 being provided at the top of the box cavity of the disk box 3, a bubbling mechanism 9 being further provided at the bottom center of the disk box 3, a temperature control disk 4 being further provided on the disk surface of the disk box 3, and a liquid guide port 7 being connected to the upper end of the disk box 3.

[0026] In this embodiment, one disk surface of the disk box 3 is in positive correspondence with the light source mechanism 2 and has a transparent structure, so that the light from the light source mechanism 2 is vertically emitted into the box cavity of the disk box 3. The other disk surface of the disk box 3 covers the temperature control disk 4, and the temperature of the solution in the box cavity of the disk box 3 is regulated and maintained by the temperature control disk 4.

[0027] In this embodiment, a methanol organic solution containing a standard substance is introduced into the disc box 3 through the liquid guide port 7, and the solution introduction height in the disc box 3 is higher than the two ends of the guide plate 11 and lower than the top of the disc box 3 cavity, so that a certain cavity is formed on the top of the disc box 3 cavity, and the guide plate 11 and the disc box 3 cavity form a narrow upper arc cavity and a wide air cavity, and the lower end of the liquid guide port 7 is connected to the upper arc cavity, and the upper end of the pipe 15 is also connected to the upper arc cavity. That is to say, when the circulation pump 151 drives the pipe 15 to drain from bottom to top, the solution in the disc box 3 is drained and circulated from bottom to top, wherein, through the arrangement of the arc-shaped guide plate 11, the solution flowing out of the upper end of the pipe 15 can be immediately The liquid flows toward the upper end surface of the guide plate 11 and is dispersed to both ends by the upper end surface of the guide plate 11, thereby reducing the impact and fluctuation effect on the solution in the disk box 3. Through the setting of the narrow upper arc cavity, the solution can quickly and completely fill the upper arc cavity to enter the solution in the disk box 3 for circulation, thereby avoiding the occurrence of bubbles when the upper end of the solution circulates stably for a long time. In this way, while the solution can circulate, the uniformity of the stable distribution of the substance inside the solution in the disk box 3 is improved, and at the same time, the activity of the substance inside the solution during the circulation is reduced, and the overlap of substances is avoided, so that the substance in the solution can be stably and evenly irradiated by the light source mechanism 2, thereby improving the uniformity of the light received by the substance in the solution.

[0028] In this embodiment, the deoxidation component 81 includes a tank 811, a collecting box 812 is installed at the upper end of the tank cavity of tank 811, the upper end of the collecting box 812 is connected to an inlet 813, a collecting pipe 814 is installed in the center of the tank cavity of tank 811, the upper end of the collecting pipe 814 is connected to an outlet 816, the lower end of the collecting box 812 is connected to multiple branch pipes 815 connected to the lower end of the collecting pipe 814, the lower end of the tank 811 is connected to the right side of the top of the tank cavity of the disk box 3 through an inlet pipe 817, the upper end of the tank 811 is connected to one end of the circulation pump 28 through an outlet pipe 818, and the lower end of the tank 811 is also connected to the top of the tank cavity of the disk box 3 through a return pipe 819, an iron wire 8182 is installed in the outlet pipe 818, and the outer wall of the outlet pipe 818 is provided with a controller 8181 connected to the iron wire 8182.

[0029] In this embodiment, the inlet end of the inlet pipe 817 is connected to the air cavity, and the outlet end of the return pipe 819 is connected to the upper arc cavity.

[0030] In this embodiment, the iron wire 8182 is controlled by the controller 8181 to be in a high temperature state, so that the iron wire 8182 can react with oxygen, thereby removing the oxygen component in the gas, preventing oxygen from participating in the reaction, and reducing the monitoring accuracy.

[0031] In this embodiment, a cold fluid is introduced into an inlet 813 and sequentially passes through a branch pipe 815, a collecting pipe 814, and an outlet 816 to condense the gas entering the tank 811 through an inlet pipe 817, thereby removing water molecules from the gas and preventing the water molecules from participating in the reaction between the iron wire and oxygen. The condensed liquid flows into the disk box 3 through the return pipe 819.

[0032] In this embodiment, a temperature control tube 8192 is installed in the reflux pipe 819, and a second controller 8191 connected to the temperature control tube 8192 is provided on the outer wall of the reflux pipe 819. The temperature of the condensed liquid is controlled by the second controller 8191 to be consistent with the temperature of the solution in the disk box 3, thereby maintaining the temperature condition of the solution in the disk box 3.

[0033] In this embodiment, the temperature control component 82 includes a tank 2 821, and a collecting box 2 822 is installed at the upper end of the tank cavity of the tank 2 821. The upper end of the collecting box 2 822 is connected to an inlet 2 823. A collecting pipe 2 824 is installed in the center of the tank cavity of the tank 2 821. The upper end of the collecting pipe 2 824 is connected to an outlet 2 826. The lower end of the collecting box 2 822 is connected to a plurality of branch pipes 2 825 connected to the lower end of the collecting pipe 2 824. The upper end of the tank 2 821 is connected to the other end of the circulation pump 2 8 through the inlet pipe 2 827, and the lower end of the tank 2 821 is connected to the left side of the top of the tank cavity of the disk box 3 through the outlet pipe 2 828. An exhaust valve 8210 is also provided on the tank 2 821.

[0034] In this embodiment, the outlet end of the second outlet pipe 828 is connected to the air cavity.

[0035] In this embodiment, by introducing cold fluid into the second inlet 823 and passing through the second branch pipe 825, the second collecting pipe 824, and the second outlet 826 in sequence, the high-temperature gas entering the second tank 821 through the second inlet pipe 827 is cooled to the same temperature as the gas in the disk box 3, thereby maintaining the temperature conditions of the gas in the disk box.

[0036] In this embodiment, the exhaust valve 8210 is used to discharge the gas, so as to maintain the purity and pressure stability of the gas in the disk box 3.

[0037] In this embodiment, the chamber of the second tank 821 is connected to a nitrogen tank 829 so that the solution in the tray box 3 is in an oxygen-free condition.

[0038] In this embodiment, the arc-shaped end surface of the guide plate 11 is further provided with a plurality of flow holes 111, and the flow holes 111 are in contact with the wall of the disk box 3. When the solution passes through the flow holes 111, it can flow along the wall of the disk box 3, reducing the impact effect on the solution. At the same time, it is used to connect the upper arc cavity and the air cavity.

[0039] In this embodiment, a temperature and pressure sensor 10 is further provided on the top of the cavity of the disk box 3 to monitor the temperature and pressure in the cavity of the disk box 3 so as to make timely adjustments so that the solution can be photosensitively monitored under the required stable temperature, pressure and light conditions.

[0040] In this embodiment, the foaming mechanism 9 includes a connecting plate 93 and an arc-shaped orifice plate 91. The connecting plate 93 is installed outside the lower end of the disk box 3, and the orifice plate 91 is installed at the bottom center of the box cavity of the disk box 3. The two ends of the orifice plate 91 are connected to the box wall of the disk box 3 through flexible sheets 92 respectively. A sliding hole 31 is also provided on the box wall of the disk box 3, and a sliding rod 94 slides on the sliding hole 31. The upper end of the sliding rod 94 is connected to the orifice plate 91, and the lower end of the sliding rod 94 is connected to the connecting plate 93 through a spring 95.

[0041] In this embodiment, at regular intervals, when the circulation flow of pipe 15 from top to bottom is regulated by circulating pump 151, pipe 15 draws the gas in the air cavity into the bottom of the solution, and the gas impacts and lifts up the orifice plate 91. The gas passes through the orifice of the orifice plate 91 to form tiny bubbles, and the tiny bubbles float up, thereby playing the effect of mixing the substances in the solution, thereby improving the uniform distribution of the substances in the solution. As a preferred embodiment, during the bubbling mixing process, the light source mechanism 2 is turned off. After the bubbling is completed, the light source mechanism 2 is turned on again after the solution is stabilized.

[0042] In this embodiment, the monitoring mechanism 6 includes a pipe 2 61 connected to the pipe 1 5, a valve 2 62 is provided on the pipe 2 61, a carrier 63 connected to the pipe 2 61 is provided on the base 1, a motor 64 is provided at the center of the carrier 63, a carrier plate 65 is provided at the lower end of the motor 64, the carrier plate 65 is provided with a sampling cup 66 corresponding to the pipe 2 61, and a monitor 67 corresponding to the sampling cup 66 is also provided on the carrier 63.

[0043] In this embodiment, when sampling is performed, the motor 64 controls the carrier plate 65 to rotate so that the sampling cup 66 is aligned with the outlet end of the second pipe 61, and the second valve 62 is opened to perform sampling.

[0044] In specific implementation, it includes the following steps:

[0045] Step 1: Introduce a methanol organic solution containing a standard substance into the tray box 3 through the liquid guide port 7, so that an upper arc cavity and an air cavity are formed on the top of the tray box 3;

[0046] Step 2: Start the circulation pump 2 8 to circulate the gas in the air cavity and the upper arc cavity. At the same time, nitrogen is replenished through the nitrogen tank 829. The exhaust valve 8210 is opened to fill the gas in the air cavity and the upper arc cavity with pure nitrogen. The exhaust valve 8210 is then closed.

[0047] Step 3: Setting the operating interval of the foaming mechanism 9;

[0048] Step 4: Start the circulation pump 51 to circulate the solution in the tray 3. At the same time, start the deoxidation component 81 and the temperature control component 82.

[0049] Step 5: Monitor the temperature and pressure through the temperature and pressure sensor 10 so as to provide feedback to the temperature control panel 4 for temperature control and the nitrogen tank 829 for nitrogen compensation and pressure control;

[0050] Step 6: Regular sampling and monitoring by monitoring agency 6.

[0051] The above description is only a preferred specific embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An intelligent monitoring system for photostability of standard organic solution substances in methanol, comprising a base station (1) and a second circulating pump (8), characterized in that: A light source mechanism (2) is mounted on the base (1), a disk box (3) is mounted on the light source mechanism (2), one end of a second circulating pump (8) is connected to the right side of the top of the disk box (3) through a deoxidation component (81), the other end of the second circulating pump (8) is connected to the left side of the top of the disk box (3) through a temperature control component (82), the upper and lower centers of the disk box (3) are connected through a pipe (5), a valve (52) and a circulation pump (51) are respectively provided on the pipe (5), and the pipe (5) is also connected to a monitoring mechanism (6), an arc-shaped guide plate (11) is provided at the top of the disk box (3), a bubbling mechanism (9) is also provided at the center of the bottom of the disk box (3), a temperature control plate (4) is also provided on the disk surface of the disk box (3), and a liquid guide port (7) is connected to the upper end of the disk box (3); The deoxidation assembly (81) includes a tank (811), a collecting box (812) is installed at the upper end of the tank cavity of the tank (811), the upper end of the collecting box (812) is connected to an inlet (813), a collecting pipe (814) is installed in the center of the tank cavity of the tank (811), the upper end of the collecting pipe (814) is connected to an outlet (816), the lower end of the collecting box (812) is connected to a plurality of branch pipes (815) connected to the lower end of the collecting pipe (814), and the tank (811) is provided with a plurality of branch pipes (815) connected to the lower end of the collecting pipe (814). The lower end of (811) is connected to the right side of the top of the chamber of the disc box (3) through an inlet pipe (817), the upper end of the tank (811) is connected to one end of the circulation pump (8) through an outlet pipe (818), and the lower end of the tank (811) is also connected to the top of the chamber of the disc box (3) through a return pipe (819). An iron wire (8182) is installed in the outlet pipe (818), and a controller (8181) connected to the iron wire (8182) is provided on the outer wall of the outlet pipe (818); A temperature control tube (8192) is installed inside the return pipe (819), and a second controller (8191) connected to the temperature control tube (8192) is provided on the outer wall of the return pipe (819); The temperature control assembly (82) includes a second tank (821), a second collecting box (822) is installed at the upper end of the tank cavity of the second tank (821), the upper end of the second collecting box (822) is connected to the second inlet (823), a second collecting pipe (824) is installed at the center of the tank cavity of the second tank (821), the upper end of the second collecting pipe (824) is connected to the second outlet (826), the lower end of the second collecting box (822) is connected to a plurality of branch pipes (825) connected to the lower end of the second collecting pipe (824), the upper end of the second tank (821) is connected to the other end of the second circulating pump (8) through the second inlet pipe (827), the lower end of the second tank (821) is connected to the left side of the top of the tank cavity of the disk box (3) through the second outlet pipe (828), and the second tank (821) is also provided with an exhaust valve (8210); The chamber of tank 2 (821) is connected to a nitrogen tank (829).

2. The intelligent monitoring system for photostability of standard organic solution substances in methanol according to claim 1, characterized in that: The arc-shaped end surface of the guide plate (11) is further provided with a plurality of flow holes (111).

3. The intelligent monitoring system for photostability of standard organic solution substances in methanol according to claim 1, characterized in that: A temperature and pressure sensor (10) is also provided on the top of the chamber of the disk box (3).

4. The intelligent monitoring system for photostability of standard organic solution substances in methanol according to claim 1, characterized in that: The foaming mechanism (9) includes a connecting plate (93) and an arc-shaped orifice plate (91). The connecting plate (93) is installed on the outside of the lower end of the disk box (3). The orifice plate (91) is installed at the bottom center of the box cavity of the disk box (3). The two ends of the orifice plate (91) are connected to the box wall of the disk box (3) through flexible sheets (92). A sliding hole (31) is also provided on the box wall of the disk box (3). A sliding rod (94) slides on the sliding hole (31). The upper end of the sliding rod (94) is connected to the orifice plate (91), and the lower end of the sliding rod (94) is connected to the connecting plate (93) through a spring (95).

5. The intelligent monitoring system for photostability of standard organic solution substances in methanol according to claim 1, characterized in that: The monitoring mechanism (6) comprises a second pipe (61) connected to the first pipe (5), a second valve (62) is provided on the second pipe (61), a carrier (63) connected to the second pipe (61) is provided on the base (1), a motor (64) is provided at the center of the carrier (63), a carrier plate (65) is provided at the lower end of the motor (64), the carrier plate (65) is provided with a sampling cup (66) corresponding to the second pipe (61), and a monitoring instrument (67) corresponding to the sampling cup (66) is also provided on the carrier (63).

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