Concentration analyzer automatic cleaning system for explosion-proof area and control method

Abstract

The invention provides a concentration analyzer automatic cleaning system for an explosion-proof area and a control method.The concentration analyzer automatic cleaning system comprises a brush cleaning unit, a high-pressure water cleaning unit, an ultrasonic cleaning unit, a cleaning pollution judging unit and a data interaction interface, and a brush assembly arranged in the brush cleaning unit is installed on one side of an optical window of a refractometer; a brush assembly is arranged in the window to ensure that the brush covers the surface of the window, a driving unit of the brush assembly performs data interaction with the data interaction interface, a plurality of parameters are built in the driving unit, the driving unit controls the movement speed and driving pressure of the brush in the brush assembly, and adjustment is performed by receiving a control instruction of the data interaction interface; a high-pressure pump, nozzles and a connecting pipeline are arranged in the high-pressure water cleaning unit, the nozzles are arranged around an optical window of the refractometer and connected with the high-pressure pump through the connecting pipeline, a control unit is arranged on the high-pressure pump, and water pump pressure parameters and time interval parameters are preset in the control unit.

Description

Technical Field

[0001] The invention belongs to the field of special equipment cleaning, and in particular relates to an automatic cleaning system and a control method for a concentration analyzer used in explosion-proof areas. Background Art

[0002] The chemical industry needs to set up explosion-proof areas because of the presence of flammable substances: the chemical industry often involves the processing, production or storage of flammable substances such as flammable gases, vapors, liquids or dust. These substances may cause explosions under certain conditions (such as sufficient oxygen, fire sources, etc.). Safety assurance: In order to prevent accidental explosions, setting up explosion-proof areas is a safety measure. The establishment of these areas is intended to reduce environmental conditions that may cause explosions, thereby reducing the risk of explosion accidents and ensuring the safety of workers and equipment. Industrial operation requirements: During the chemical production process, there may be some operations or equipment that may generate sparks or high temperatures, such as electrical equipment, mechanical friction, etc. These factors may become ignition sources for the explosion of flammable substances. In order to prevent possible explosion accidents in the chemical industry, it is very important to set up explosion-proof areas and take corresponding explosion-proof measures. These measures include using equipment that meets explosion-proof standards, implementing strict safety operating procedures, and providing employees with relevant safety training to ensure safe operation during the chemical production process.

[0003] In flammable and explosive environments such as petrochemicals, coal mines, and natural gas, concentration analyzers are important instruments for monitoring the composition and concentration of gases and liquids, and are of great significance for ensuring production safety and process control. However, due to the harsh environment in explosion-proof areas, the analyzer is prone to problems such as dirt clogging and crystallization during long-term operation, affecting the measurement accuracy and service life. Traditional manual cleaning methods have many shortcomings: first, professional personnel are required to enter the explosion-proof area to operate, which poses a safety hazard; second, the cleaning process is cumbersome and time-consuming, affecting production efficiency; third, manual cleaning is difficult to ensure the consistency and reliability of cleaning quality. To solve these problems, automatic cleaning systems came into being, but the existing automatic cleaning systems still have some limitations; smart instruments play a key role in the explosion-proof areas of the chemical industry. They need to meet specific explosion-proof standards and safety requirements and have highly accurate monitoring and control capabilities.

[0004] These smart instruments usually have the following features: Explosion-proof design: Comply with relevant explosion-proof standards and can operate safely and reliably in explosive environments. High-precision monitoring: Able to monitor temperature, pressure, flow, concentration and other parameters in real time and provide accurate data. Remote monitoring and control: With remote access function, operators can remotely monitor and control equipment, thereby reducing the need to enter dangerous areas. Self-diagnosis and alarm: Able to automatically identify faults and alarm in time to ensure the normal operation of the equipment. Adaptability and flexibility: Able to adapt to different environmental conditions and process requirements, with certain flexibility and scalability.

[0005] The application scope of smart instruments covers all aspects of chemical production, including but not limited to storage tank monitoring, pipeline flow control, temperature and pressure monitoring, chemical reaction process control, etc. Through these smart instruments, chemical companies can improve production efficiency, reduce safety risks, and manage the entire production process more intelligently. Summary of the invention

[0006] The present invention proposes an automatic cleaning system and control method for a concentration analyzer for explosion-proof areas. The system improves the cleaning effect and adaptability by integrating multiple cleaning methods. The system optimizes the cleaning process and improves efficiency by intelligent control and real-time monitoring. The system automatically determines the degree of contamination, realizes on-demand cleaning, reduces unnecessary cleaning operations, provides a data interaction interface, facilitates operation and monitoring, is suitable for explosion-proof areas, and improves safety.

[0007] The technical solution of the present invention is implemented as follows: an automatic cleaning system for a concentration analyzer used in explosion-proof areas, comprising a brush cleaning unit, a high-pressure water cleaning unit, an ultrasonic cleaning unit, a cleaning pollution determination unit and a data interaction interface, wherein a brush assembly built into the brush cleaning unit is installed on one side of an optical window of a refractometer to ensure that the brush covers the window surface, a driving unit of the brush assembly performs data interaction with the data interaction interface, the driving unit has several built-in parameters, and the movement speed and driving pressure of the brush in the brush assembly are controlled by the driving unit, and are adjusted by receiving control instructions from the data interaction interface;

[0008] The high-pressure water cleaning unit is built with a high-pressure pump, a nozzle and a connecting pipe, wherein the nozzle is arranged around the optical window of the refractometer and connected to the high-pressure pump through the connecting pipe, and a control unit is arranged on the high-pressure pump, and the water pump pressure parameter and time interval parameter are preset in the control unit. The control unit exchanges data with the data interaction interface, cleans the optical window of the refractometer through the nozzle according to the set water pump pressure and interval time, and adjusts by receiving control instructions from the data interaction interface;

[0009] The ultrasonic cleaning unit includes an ultrasonic generator, an ultrasonic transducer, a cleaning tank, a cleaning liquid supply unit and an ultrasonic control unit, wherein the ultrasonic transducer is installed at the bottom or side of the cleaning tank and connected to the ultrasonic generator, the ultrasonic generator generates high-frequency electrical energy, and converts the high-frequency electrical energy into mechanical vibration through the ultrasonic transducer, a cleaning liquid supply unit is provided on one side of the cleaning tank, and the cleaning liquid in the cleaning tank is circulated and filtered through the cleaning liquid supply unit, the ultrasonic frequency, power and cleaning time are set in the ultrasonic control unit, and data is interacted with the data interaction interface, and adjustment is performed by receiving control instructions from the data interaction interface;

[0010] The cleaning contamination determination unit is built with an optical sensor, a light source, a data processing unit and a warning unit, wherein the optical sensor measures the light intensity or spectrum in the optical window of the refractometer, the light source is used to transmit or reflect the sapphire window, the data processing unit receives and analyzes the data transmitted by the optical sensor to determine the degree of contamination of the optical window of the refractometer, and feeds back the determined data to the user interaction interface, and the warning unit sends a warning to the user interaction interface when detecting that the contamination exceeds a set threshold, and simultaneously feeds back instructions to the brush cleaning unit, the high-pressure water cleaning unit and the ultrasonic cleaning unit.

[0011] This system integrates a variety of cleaning methods, including brush cleaning, high-pressure water cleaning and ultrasonic cleaning. This diversified cleaning solution can effectively deal with different types and degrees of pollution, greatly improving the cleaning effect and adaptability. The system introduces an intelligent cleaning pollution judgment unit, which monitors the pollution degree of the refractometer optical window in real time through an optical sensor, realizes on-demand cleaning, avoids unnecessary cleaning operations, improves cleaning efficiency and reduces resource consumption. Each unit of the system is connected to the data interaction interface, realizing real-time adjustment and optimization of parameters. This dynamic adjustment capability makes the cleaning process more accurate and efficient. In addition, the brush cleaning unit of the system adopts adjustable driving pressure and movement speed, the high-pressure water cleaning unit can adjust the water pump pressure and cleaning interval, and the ultrasonic cleaning unit can adjust the frequency, power and cleaning time. These flexible and adjustable parameter settings make the cleaning process more refined and personalized. The system is equipped with a warning unit. When the pollution exceeds the set threshold, it not only sends an alarm to the user interface, but also automatically triggers the corresponding cleaning unit, realizing the automation and intelligence of the cleaning process. Finally, the system is specially designed for explosion-proof areas. While ensuring the cleaning effect, it fully considers the safety requirements, which is ignored by many existing technologies.

[0012] This automatic cleaning system significantly improves the cleaning effect, efficiency and safety of concentration analyzers in explosion-proof areas through innovative features such as diversified cleaning methods, intelligent contamination judgment, real-time parameter adjustment, automated operation and explosion-proof design. It solves problems in existing technologies such as single cleaning method, poor effect, low intelligence and insufficient safety, and represents an important technological breakthrough in this field.

[0013] As a preferred embodiment, the driving unit in the brush cleaning unit is driven by an air motor or an electric motor, and the brush in the brush assembly is driven by the air motor or the electric motor to perform reciprocating motion. The brush assembly includes a brush and a bracket, wherein the bracket is arranged on the optical window of the refractometer.

[0014] As a preferred embodiment, the brush sets a cleaning path according to the shape and size of the refractometer optical window to ensure coverage of the window surface, moves the brush head to the surface of the refractometer optical window to ensure the correct initial position, and dynamically adjusts the movement parameters of the brush head through the drive unit.

[0015] As a preferred embodiment, the light source in the cleaning pollution judgment unit includes any one of a laser, an LED or a halogen lamp. The light source emits a beam of stable and specific wavelength light, which passes through or is reflected on the optical window of the refractometer. The optical sensor receives the transmitted or reflected light signal and converts it into an electrical signal. The data processing unit receives the electrical signal of the sensor in real time, and performs signal processing and analysis. By comparing the current light signal intensity or spectral characteristics with the initial calibration data, the attenuation degree of the light signal is judged. If the light signal intensity or spectrum changes significantly, the optical window of the refractometer is contaminated. The controller judges whether the contamination degree exceeds a preset threshold based on the analysis result of the data processing unit.

[0016] A control method for an automatic cleaning system of a concentration analyzer for explosion-proof areas, the method comprising the following steps:

[0017] The light intensity data collected by the optical sensor, and the standard sampling frequency is set in the optical sensor, the optical window of the refractometer is collected in real time by the optical sensor, the reference light intensity is recorded during the initial calibration, and the relative change rate of the current light intensity and the reference value is calculated after the collection;

[0018] The preset contamination level threshold value, when the detected light intensity change rate exceeds the set contamination threshold value, it is considered that the refractometer optical window is contaminated, and the corresponding cleaning unit is selected to perform the cleaning operation;

[0019] Preset cleaning parameters in the cleaning unit, and adaptively adjust the cleaning mode based on historical data of contamination conditions, adaptively adjust the cleaning parameters in the cleaning unit, and start the optical sensor for detection after cleaning is completed;

[0020] By detecting the change in light intensity before and after cleaning, the cleaning effect is evaluated and the cleaning time and frequency are optimized. If the detected contamination level exceeds the set contamination threshold, the cleaning unit is switched to repeat the cleaning process.

[0021] This method uses real-time light intensity data collection and analysis to determine the degree of contamination, which is more accurate and timely than traditional fixed-time cleaning or simple visual inspection. By setting a standard sampling frequency and calculating the relative rate of change of light intensity, the system can accurately capture the occurrence and degree of contamination, thereby achieving precise cleaning triggering.

[0022] This method introduces the concept of preset pollution thresholds. The cleaning operation is initiated only when the pollution level exceeds the set threshold. This on-demand cleaning method avoids unnecessary cleaning and saves resources and time. This method has the ability to adaptively adjust the cleaning mode and dynamically adjust the cleaning time and parameters according to historical pollution data. This intelligent adjustment mechanism makes the cleaning process more efficient and personalized, and can adopt the most suitable cleaning strategy for different types and degrees of pollution.

[0023] This method evaluates the cleaning effect after each cleaning, and judges the cleaning effect by comparing the change in light intensity before and after cleaning, and optimizes the cleaning time and frequency accordingly. This closed-loop feedback mechanism ensures continuous improvement in cleaning quality. This method also includes a cleaning unit switching mechanism. When one cleaning method cannot effectively remove contamination, the system will automatically switch to other cleaning units. This flexible cleaning strategy greatly improves the success rate of cleaning. This control method achieves a more accurate, efficient and reliable automatic cleaning process through a series of innovative mechanisms such as real-time monitoring, intelligent judgment, adaptive adjustment, effect evaluation and flexible switching, which significantly improves the performance and maintenance efficiency of concentration analyzers in explosion-proof areas, and represents an important breakthrough in control technology in this field.

[0024] After adopting the above technical scheme, the beneficial effects of the present invention are: the cleaning effect is significantly improved: it integrates three cleaning methods of brush, high-pressure water and ultrasonic wave, which can effectively deal with various types of dirt and greatly improve the cleaning quality and efficiency. High degree of intelligence: the pollution degree is monitored in real time through the cleaning pollution judgment unit, and on-demand cleaning is realized, unnecessary cleaning operations are avoided, resources are saved and the life of the equipment is extended. Strong flexibility: the parameters of each cleaning unit can be adjusted in real time through the data interaction interface to adapt to different working conditions and pollution conditions and optimize the cleaning effect. High level of automation: cleaning is automatically triggered when the pollution exceeds the threshold, reducing manual intervention and improving work efficiency and safety. Improved safety: specially designed for explosion-proof areas to ensure safe and reliable operation in high-risk environments. Reduced maintenance costs: intelligent and automated features reduce the need for manual maintenance and reduce operating costs. Analyzer performance optimization: keep the measurement window clean, improve measurement accuracy and stability, and extend the service life of the analyzer. Wide applicability: it can be applied to various types of concentration analyzers and has good versatility. Remote monitoring and management: remote operation and monitoring are realized through the data interaction interface to improve management efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 is a flow chart of the method of the present invention;

[0027] Figure 2 This is a cleaning timing diagram in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example:

[0030] like Figures 1-2As shown, an automatic cleaning system for a concentration analyzer used in explosion-proof areas includes a brush cleaning unit, a high-pressure water cleaning unit, an ultrasonic cleaning unit, a cleaning contamination determination unit, and a data interaction interface. The brush assembly built into the brush cleaning unit is installed on one side of the optical window of the refractometer to ensure that the brush covers the window surface. The driving unit of the brush assembly performs data interaction with the data interaction interface. The driving unit has several built-in parameters. The movement speed and driving pressure of the brush in the brush assembly are controlled by the driving unit, and are adjusted by receiving control instructions from the data interaction interface.

[0031] The high-pressure water cleaning unit is built with a high-pressure pump, a nozzle and a connecting pipe, wherein the nozzle is arranged around the optical window of the refractometer and connected to the high-pressure pump through the connecting pipe, and a control unit is arranged on the high-pressure pump, and the water pump pressure parameter and time interval parameter are preset in the control unit. The control unit exchanges data with the data interaction interface, cleans the optical window of the refractometer through the nozzle according to the set water pump pressure and interval time, and adjusts by receiving control instructions from the data interaction interface;

[0032] The ultrasonic cleaning unit includes an ultrasonic generator, an ultrasonic transducer, a cleaning tank, a cleaning liquid supply unit and an ultrasonic control unit, wherein the ultrasonic transducer is installed at the bottom or side of the cleaning tank and connected to the ultrasonic generator, the ultrasonic generator generates high-frequency electrical energy, and converts the high-frequency electrical energy into mechanical vibration through the ultrasonic transducer, a cleaning liquid supply unit is provided on one side of the cleaning tank, and the cleaning liquid in the cleaning tank is circulated and filtered through the cleaning liquid supply unit, the ultrasonic frequency, power and cleaning time are set in the ultrasonic control unit, and data is interacted with the data interaction interface, and adjustment is performed by receiving control instructions from the data interaction interface;

[0033] The cleaning contamination determination unit is built with an optical sensor, a light source, a data processing unit and a warning unit, wherein the optical sensor measures the light intensity or spectrum in the optical window of the refractometer, the light source is used to transmit or reflect the sapphire window, the data processing unit receives and analyzes the data transmitted by the optical sensor to determine the degree of contamination of the optical window of the refractometer, and feeds back the determined data to the user interaction interface, and the warning unit sends a warning to the user interaction interface when detecting that the contamination exceeds a set threshold, and simultaneously feeds back instructions to the brush cleaning unit, the high-pressure water cleaning unit and the ultrasonic cleaning unit.

[0034] The working principle and process of this automatic cleaning system for concentration analyzers in explosion-proof areas are as follows: the system integrates three cleaning methods: brush cleaning, high-pressure water cleaning, and ultrasonic cleaning, and cooperates with the cleaning pollution judgment unit and data interaction interface to achieve all-round intelligent cleaning of the refractometer optical window. First, the system monitors the degree of contamination of the refractometer optical window in real time through the optical sensor and light source in the cleaning pollution judgment unit. The data processing unit analyzes the sensor data to determine whether the degree of contamination exceeds the preset threshold.

[0035] When the contamination level exceeds the threshold, the warning unit sends an alarm to the user interface and triggers the cleaning process. The cleaning process first starts the brush cleaning unit, and the drive unit controls the brush to mechanically clean the measurement window at a preset speed and pressure. If the brush cleaning effect is not good, the system will start the high-pressure water cleaning unit. The high-pressure pump sprays high-pressure water flow to the measurement window through the nozzle according to the preset pressure and time interval for flushing. If the high-pressure water cleaning still cannot completely remove the contamination, the system will start the ultrasonic cleaning unit. The ultrasonic generator generates high-frequency electrical energy, which is converted into mechanical vibration through the transducer, producing a cavitation effect in the cleaning liquid, and deeply cleaning the measurement window. During the entire cleaning process, the parameters of each cleaning unit (such as brush speed, water pressure, ultrasonic frequency, etc.) can be adjusted in real time through the data interaction interface to adapt to different contamination conditions. After the cleaning is completed, the cleaning contamination judgment unit will detect the window contamination level again to ensure that the cleaning effect meets the standard. If it still does not meet the standard, the system will repeat the above cleaning process or issue an alarm for manual intervention.

[0036] The pneumatic brush cleaning unit and the electric brush cleaning unit in this application document both mechanically remove contaminants from the surface of the refractometer optical window. The main difference is the power source: the pneumatic brush is driven by compressed air, while the electric brush is driven by an electric motor. The working principles of the two are as follows: Pneumatic brush cleaning unit: compressed air drives the brush to rotate or reciprocate, and removes contaminants through mechanical friction. Electric brush cleaning unit: the electric motor drives the brush to rotate or reciprocate, and removes contaminants through mechanical friction.

[0037] Install the brush assembly next to the refractometer optical window, making sure the brush covers the entire window surface. Install the drive system (pneumatic or electric), making sure it is properly connected to the brush assembly. Connect the control system to the drive system and the sensor.

[0038] Set the cleaning cycle in the control system, and adjust the frequency according to actual needs. If using sensors, calibrate the sensitivity of the sensors to ensure accurate detection of the degree of contamination. The control system starts the drive system according to the preset time interval or sensor detection results. The brush begins to rotate or reciprocate to remove contaminants from the window surface. Check the brush assembly regularly to ensure that the bristles are intact and replace them in time if they are worn. Check the working status of the drive system to ensure that the air pressure of the pneumatic system is normal or the power supply of the electric system is stable. Clean and check the sensor regularly to ensure that it can accurately detect the degree of contamination.

[0039] The advantages of pneumatic brush cleaning units are no spark risk and are suitable for flammable and explosive environments. They are driven by compressed air and are suitable for existing pneumatic systems in industrial environments. They are easy to maintain and have high reliability of pneumatic systems. The disadvantage is that they require a stable supply of compressed air, which may increase costs.

[0040] The advantages of electric brush cleaning units are precise motor control and stable cleaning effect. The noise is relatively small. No compressed air supply is required and it is suitable for various environments. The disadvantage is that the electric system may generate sparks and is not suitable for flammable and explosive environments. A reliable power supply is required and additional electrical protection may be required.

[0041] Compared with the existing technology, this system has the following significant advantages: Integration of multiple cleaning methods: By combining mechanical scrubbing, high-pressure water washing and ultrasonic cleaning, it can deal with various types of pollutants and improve cleaning efficiency and effect. Intelligent pollution detection: Using optical sensors to monitor the degree of pollution in real time, realize on-demand cleaning, avoid unnecessary cleaning operations, and extend the life of the equipment. Strong parameter adjustability: The key parameters of each cleaning unit can be adjusted in real time through the data interaction interface, which is more adaptable. High degree of automation: The entire cleaning process can be carried out automatically, reducing manual intervention, and is particularly suitable for use in explosion-proof areas. Feedback on cleaning effects: The system can evaluate and feedback the cleaning effect in real time to ensure the cleaning quality. Modular design: Each functional unit is relatively independent, which is easy to maintain and upgrade. This innovative cleaning system not only improves the measurement accuracy and reliability of the concentration analyzer, but also greatly reduces maintenance costs and manpower investment. It is particularly suitable for use in dangerous or inaccessible explosion-proof areas and has broad application prospects.

[0042] The high-pressure water cleaning unit uses high-pressure water flow impact and shear force to remove contaminants from the surface of the refractometer optical window. This method is particularly suitable for removing stubborn dirt and deposits that are difficult to remove mechanically. The high-pressure water flow can effectively penetrate between the contaminant and the window surface and peel it off through strong impact force. The ultrasonic cleaning unit uses the cavitation effect generated by high-frequency sound waves in the liquid to clean the refractometer optical window. The ultrasonic transducer converts electrical energy into high-frequency sound waves. When these sound waves pass through the cleaning liquid, a large number of tiny bubbles are generated in the liquid. These bubbles generate strong impact force and tiny flow during the rapid formation and rupture process, which can effectively remove contaminants attached to the window surface.

[0043] The driving unit in the brush cleaning unit is driven by an air motor or an electric motor, and the air motor or the electric motor drives the brush in the brush assembly to reciprocate. The brush assembly includes a brush and a bracket, wherein the bracket is arranged on the optical window of the refractometer.

[0044] Using pneumatic motors or electric motors as drive units provides greater flexibility and adaptability. Pneumatic motors have a natural advantage in explosion-proof environments and can effectively avoid safety hazards caused by electrical sparks, while electric motors provide higher efficiency and precise control in non-explosion-proof environments. This dual-selection drive mode enables the cleaning system to be optimally configured according to different application environments, significantly improving the system's versatility and scope of application.

[0045] The design of the drive unit controlling the brush to perform reciprocating motion can more comprehensively cover the surface of the measuring window than the traditional one-way rotation cleaning method, effectively avoiding the generation of cleaning dead corners. The reciprocating motion can also simulate the action of manual wiping, which is more effective in removing stubborn stains. In addition, the reciprocating motion can reduce the wear of the brush on the window surface and extend the service life of the measuring window. The design of the brush assembly, including the brush and the bracket, also reflects a number of technological innovations. The bracket is directly set on the optical window of the refractometer. This compact structural design not only saves space, but also ensures a fixed relative position between the brush and the measuring window, improving the accuracy and consistency of cleaning.

[0046] This design also facilitates the rapid disassembly and replacement of the brush assembly, greatly improving the maintainability of the system. The presence of the bracket can also protect the measuring window from accidental damage that may occur during the cleaning process. Compared with traditional fixed cleaning devices, this detachable brush assembly design is more flexible, and brushes of different hardness or materials can be selected according to different contamination conditions, further improving the cleaning effect. Another significant advantage is that this design can achieve precise control of the cleaning force. By adjusting the output power of the pneumatic motor or electric motor, the pressure and speed of the brush can be precisely controlled to adapt to different degrees of contamination and different materials of measuring windows, which can ensure the cleaning effect and avoid unnecessary damage to the window surface. This precise control is especially important when dealing with precision optical instruments.

[0047] This design also has good scalability. For example, sensors can be integrated into the drive unit to monitor the pressure and speed of the brush in real time, and the data can be fed back to the control system to achieve closed-loop control and further improve the intelligent level of cleaning. In general, the design of this brush cleaning unit has significant innovations in terms of drive mode, motion mode, structural layout and control accuracy, which not only improves the cleaning efficiency and effect, but also enhances the adaptability, reliability and maintainability of the system, representing an important technological advancement in the automatic cleaning system of the concentration analyzer.

[0048] The brush sets a cleaning path according to the shape and size of the refractometer optical window to ensure that the window surface is covered, moves the brush head to the refractometer optical window surface to ensure that the initial position is correct, and dynamically adjusts the movement parameters of the brush head through the drive unit.

[0049] like Figure 2 As shown, set the cleaning control parameters of the cleaning control system in the concentration analyzer, such as the cleaning interval (T1), cleaning duration (T2), cleaning times (n), etc. The factory will have default values, and the cleaning sequence is shown in the figure below. When the cleaning effect of the concentration analyzer is not good according to image diagnosis, the system will automatically adjust parameters such as T1 / T2 / n according to the internal algorithm to improve the cleaning efficiency.

[0050] Setting the cleaning path according to the shape and size of the refractometer optical window is a significant improvement. Traditional cleaning systems often use fixed cleaning patterns and cannot be optimized for measurement windows of different shapes and sizes. This customized cleaning path design ensures that the cleaning process covers every corner of the window, greatly improving the efficiency and thoroughness of cleaning. This method is not only suitable for conventional round or rectangular windows, but can also easily cope with irregularly shaped windows, showing strong adaptability.

[0051] The system's precision and intelligence are reflected in the practice of moving the brush head to the surface of the refractometer optical window and ensuring the correct initial position. This precise positioning can avoid blind spots or repeated cleaning that may occur during the cleaning process, and improve the uniformity and efficiency of cleaning. Compared with traditional fixed cleaning devices, this movable brush head design greatly increases the flexibility of the system and can adapt to measurement windows with different installation positions and angles. More importantly, the system achieves real-time optimization of the cleaning process by dynamically adjusting the movement parameters of the brush head through the drive unit. This dynamic adjustment capability is not available in traditional cleaning systems. It can adjust the pressure, speed and movement trajectory of the brush in real time according to multiple factors such as the degree of contamination, window material, ambient temperature, etc., to ensure the best cleaning effect in different situations.

[0052] For light contamination, the system may choose lower pressure and faster speed, while for stubborn stains, it may increase pressure and reduce speed to increase cleaning time. This intelligent cleaning process not only improves the cleaning effect, but also maximizes the protection of the measuring window and prolongs its service life. In addition, this design also provides the possibility for further optimization of the system.

[0053] Machine learning algorithms can be combined to continuously optimize cleaning paths and parameters by analyzing historical cleaning data to achieve continuous improvement in system performance. For another example, visual sensors can be integrated to monitor the cleaning effect in real time, and the cleaning strategy can be adjusted accordingly to achieve closed-loop control. This design also has good scalability. For example, multiple brush heads can be easily added to achieve parallel cleaning and further improve cleaning efficiency. Or different types of brush heads can be integrated to deal with different types of pollutants.

[0054] This brush cleaning design shows obvious technical advantages in cleaning path planning, initial positioning, dynamic parameter adjustment, etc., and represents the trend of the concentration analyzer automatic cleaning system towards more intelligent, precise and efficient development. It can not only provide better cleaning effects, but also adapt to more complex application environments, making important contributions to improving the reliability and measurement accuracy of analytical instruments.

[0055] The light source in the cleaning pollution judgment unit includes any one of a laser, an LED or a halogen lamp. A beam of stable and specific wavelength light is emitted by the light source, passing through or reflecting on the optical window of the refractometer. The optical sensor receives the transmitted or reflected light signal and converts it into an electrical signal. The data processing unit receives the electrical signal of the sensor in real time, and performs signal processing and analysis. By comparing the current light signal intensity or spectral characteristics with the initial calibration data, the attenuation degree of the light signal is judged. If the light signal intensity or spectrum changes significantly, the optical window of the refractometer is contaminated. The controller judges whether the contamination degree exceeds a preset threshold based on the analysis result of the data processing unit.

[0056] The diverse selection of light sources (laser, LED or halogen lamp) greatly improves the adaptability and flexibility of the system. Different types of light sources have different characteristics, such as lasers are highly focused and monochromatic, LEDs have low power consumption and long life, and halogen lamps have a wide spectral range. This diverse selection allows the system to select the most suitable light source according to the specific application environment and measurement requirements, thereby optimizing the effect of pollution detection. Compared with the traditional single light source design, this approach significantly improves the versatility and performance of the system. Secondly, the use of a stable light beam of a specific wavelength for pollution detection is an important innovation. By precisely controlling the wavelength of the light source, the system can optimize the detection of specific types of pollutants.

[0057] Certain wavelengths of light may be particularly sensitive to certain types of contaminants, thereby increasing the sensitivity and accuracy of detection. This method is far superior to the traditional simple light intensity measurement and can more accurately identify and quantify different types of contamination. In addition, the system uses two optical path designs, either through or reflected, which further increases the flexibility and applicability of detection. Through detection is suitable for windows with higher transparency, while reflective detection is more suitable for the detection of surface contamination. This dual-mode design enables the system to adapt to different types of refractometer optical windows and contamination conditions, greatly expanding the scope of application. The design of the optical sensor converting light signals into electrical signals, combined with real-time data processing and analysis, realizes a high degree of automation and intelligence in contamination detection. The data processing unit can accurately quantify the degree of contamination by comparing the current light signal with the initial calibration data. This method can not only detect the presence of contamination, but also assess the severity of contamination, providing an accurate basis for subsequent cleaning operations. This is far superior to the traditional simple threshold judgment method and can achieve more sophisticated contamination management. Spectral feature analysis is another significant innovation. By analyzing spectral changes, the system can not only detect the degree of contamination, but also identify the type of contaminant. This capability is particularly important in complex industrial environments and can help the system select the most suitable cleaning method and parameters. Compared with traditional techniques, this method provides richer contamination information, which helps improve cleaning efficiency and effectiveness. The design of preset thresholds increases the flexibility and customizability of the system. Users can adjust the thresholds according to specific application requirements and environmental conditions to achieve refined control of contamination detection. This adjustability allows the system to maintain optimal performance in different working environments.

[0058] Light sources and sensors with multiple wavelengths can be integrated to achieve multi-parameter pollution detection. Alternatively, machine learning algorithms can be introduced to continuously optimize the accuracy of pollution judgment by analyzing historical data. In general, the design of this cleaning pollution judgment unit shows obvious technical advantages in terms of light source selection, detection methods, data analysis and judgment criteria, and represents the trend of the concentration analyzer automatic cleaning system towards a more precise, intelligent and flexible direction. It can not only provide more accurate pollution detection, but also provide more valuable information for the cleaning process, thereby significantly improving the efficiency and reliability of the entire system.

[0059] A control method for an automatic cleaning system of a concentration analyzer for explosion-proof areas, the method comprising the following steps:

[0060] The light intensity data collected by the optical sensor, and the standard sampling frequency is set in the optical sensor, the optical window of the refractometer is collected in real time by the optical sensor, the reference light intensity is recorded during the initial calibration, and the relative change rate of the current light intensity and the reference value is calculated after the collection;

[0061] The preset contamination level threshold value, when the detected light intensity change rate exceeds the set contamination threshold value, it is considered that the refractometer optical window is contaminated, and the corresponding cleaning unit is selected to perform the cleaning operation;

[0062] Preset cleaning parameters in the cleaning unit, and adaptively adjust the cleaning mode based on historical data of contamination conditions, adaptively adjust the cleaning parameters in the cleaning unit, and start the optical sensor for detection after cleaning is completed;

[0063] By detecting the change in light intensity before and after cleaning, the cleaning effect is evaluated and the cleaning time and frequency are optimized. If the detected contamination level exceeds the set contamination threshold, the cleaning unit is switched to repeat the cleaning process.

[0064] The method of collecting light intensity data through optical sensors and setting standard sampling frequencies enables real-time and continuous monitoring of the contamination status of the refractometer optical window. This method is more accurate and efficient than traditional periodic inspections or manual observations. By calculating the relative rate of change between the current light intensity and the reference light intensity recorded during initial calibration, the system can accurately quantify the degree of contamination. This quantitative analysis method greatly improves the accuracy and sensitivity of contamination detection.

[0065] The design of presetting the pollution level threshold and automatically triggering the cleaning operation according to the light intensity change rate realizes the intelligence and automation of the cleaning process. This method avoids unnecessary cleaning, saves resources, and reduces potential damage to the measurement window. Compared with the cleaning method with fixed time intervals, this on-demand cleaning method is more flexible and efficient. The system can select the corresponding cleaning unit according to the pollution situation. This intelligent selection mechanism ensures that the cleaning method matches the pollution type and improves the cleaning efficiency. The design of presetting the cleaning parameters in the cleaning unit and adaptively adjusting the cleaning mode according to historical data reflects the learning and optimization capabilities of the system. This adaptive mechanism can dynamically adjust the cleaning parameters such as cleaning time, pressure, frequency, etc. according to different pollution types and degrees, so as to achieve the best cleaning effect. This method far exceeds the traditional fixed parameter cleaning mode and can adapt to complex and changing industrial environments. The design of starting the optical sensor for detection immediately after cleaning is completed realizes the instant evaluation of the cleaning effect. This closed-loop control mechanism ensures the effectiveness of each cleaning operation and avoids the problem of insufficient or excessive cleaning. The method of evaluating the cleaning effect by comparing the light intensity changes before and after cleaning and optimizing the cleaning time and frequency accordingly reflects the continuous improvement ability of the system. This self-optimization mechanism can continuously improve the cleaning efficiency and effect of the system and adapt to various changes that may occur in long-term operation. If the pollution level is still above the set threshold, the design of switching the cleaning unit to repeat the cleaning reflects the multiple protection mechanisms of the system. This design ensures that the expected cleaning effect can be achieved under complex pollution conditions, greatly improving the reliability of the system.

[0066] This control method also has good scalability and adaptability. Machine learning algorithms can be introduced to predict pollution trends and achieve preventive cleaning by analyzing a large amount of historical data. Or a variety of sensors, such as temperature, pressure, flow, etc., can be integrated to comprehensively evaluate the pollution status and cleaning effect, and further improve the intelligence level of the system. This control method shows obvious technical advantages in real-time monitoring, intelligent triggering, adaptive adjustment, effect evaluation and continuous optimization, and represents the trend of the automatic cleaning system of the concentration analyzer towards more intelligence, precision and efficiency. It can not only provide more reliable cleaning effects, but also adapt to complex and changeable industrial environments, making important contributions to improving the reliability and measurement accuracy of analytical instruments. This method is particularly suitable for use in explosion-proof areas, which not only ensures the cleaning effect, but also minimizes manual intervention and improves safety.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic cleaning system for concentration analyzers in explosion-proof areas, characterized in that: It includes a brush cleaning unit, a high-pressure water cleaning unit, an ultrasonic cleaning unit, a cleaning pollution determination unit and a data interaction interface. The brush cleaning unit has a built-in brush assembly installed on one side of the optical window of the refractometer to ensure that the brush covers the window surface. The driving unit of the brush assembly interacts with the data interaction interface. The driving unit has several built-in parameters. The movement speed and driving pressure of the brush in the brush assembly are controlled by the driving unit and adjusted by receiving control instructions from the data interaction interface. The high-pressure water cleaning unit is built with a high-pressure pump, a nozzle and a connecting pipe, wherein the nozzle is arranged around the optical window of the refractometer and connected to the high-pressure pump through the connecting pipe, and a control unit is arranged on the high-pressure pump, and the water pump pressure parameter and time interval parameter are preset in the control unit. The control unit exchanges data with the data interaction interface, cleans the optical window of the refractometer through the nozzle according to the set water pump pressure and interval time, and adjusts by receiving control instructions from the data interaction interface; The ultrasonic cleaning unit includes an ultrasonic generator, an ultrasonic transducer, a cleaning tank, a cleaning liquid supply unit and an ultrasonic control unit, wherein the ultrasonic transducer is installed at the bottom or side of the cleaning tank and connected to the ultrasonic generator, the ultrasonic generator generates high-frequency electrical energy, and converts the high-frequency electrical energy into mechanical vibration through the ultrasonic transducer, a cleaning liquid supply unit is provided on one side of the cleaning tank, and the cleaning liquid in the cleaning tank is circulated and filtered through the cleaning liquid supply unit, the ultrasonic frequency, power and cleaning time are set in the ultrasonic control unit, and data is interacted with the data interaction interface, and adjustment is performed by receiving control instructions from the data interaction interface; The cleaning contamination determination unit is built with an optical sensor, a light source, a data processing unit and a warning unit, wherein the optical sensor measures the light intensity or spectrum in the optical window of the refractometer, the light source is used to transmit or reflect the sapphire window, the data processing unit receives and analyzes the data transmitted by the optical sensor to determine the degree of contamination of the optical window of the refractometer, and feeds back the determined data to the user interaction interface, and the warning unit sends a warning to the user interaction interface when detecting that the contamination exceeds a set threshold, and simultaneously feeds back instructions to the brush cleaning unit, the high-pressure water cleaning unit and the ultrasonic cleaning unit.

2. The automatic cleaning system for a concentration analyzer used in explosion-proof areas according to claim 1, characterized in that: The driving unit in the brush cleaning unit is driven by an air motor or an electric motor, and the air motor or the electric motor drives the brush in the brush assembly to reciprocate. The brush assembly includes a brush and a bracket, wherein the bracket is arranged on the optical window of the refractometer.

3. The automatic cleaning system for a concentration analyzer used in explosion-proof areas according to claim 2, characterized in that: The brush sets a cleaning path according to the shape and size of the refractometer optical window to ensure that the window surface is covered, moves the brush head to the refractometer optical window surface to ensure that the initial position is correct, and dynamically adjusts the movement parameters of the brush head through the drive unit.

4. The automatic cleaning system for a concentration analyzer used in explosion-proof areas according to claim 2, characterized in that: The light source in the cleaning pollution judgment unit includes any one of a laser, an LED or a halogen lamp. A beam of stable and specific wavelength light is emitted by the light source, passing through or reflecting on the optical window of the refractometer. The optical sensor receives the transmitted or reflected light signal and converts it into an electrical signal. The data processing unit receives the electrical signal of the sensor in real time, and performs signal processing and analysis. By comparing the current light signal intensity or spectral characteristics with the initial calibration data, the attenuation degree of the light signal is judged. If the light signal intensity or spectrum changes significantly, the optical window of the refractometer is contaminated. The controller judges whether the contamination degree exceeds a preset threshold based on the analysis result of the data processing unit.

5. A control method for an automatic cleaning system of a concentration analyzer used in explosion-proof areas, characterized in that: The method comprises the following steps: The light intensity data collected by the optical sensor, and the standard sampling frequency is set in the optical sensor, the optical window of the refractometer is collected in real time by the optical sensor, the reference light intensity is recorded during the initial calibration, and the relative change rate of the current light intensity and the reference value is calculated after the collection; The preset contamination level threshold value, when the detected light intensity change rate exceeds the set contamination threshold value, it is considered that the refractometer optical window is contaminated, and the corresponding cleaning unit is selected to perform the cleaning operation; Preset cleaning parameters in the cleaning unit, and adaptively adjust the cleaning mode based on historical data of contamination conditions, adaptively adjust the cleaning parameters in the cleaning unit, and start the optical sensor for detection after cleaning is completed; By detecting the change in light intensity before and after cleaning, the cleaning effect is evaluated and the cleaning time and frequency are optimized. If the detected contamination level exceeds the set contamination threshold, the cleaning unit is switched to repeat the cleaning process.

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