Bag-type dust collector control system

Abstract

According to the bag-type dust remover control system, in a dust removal box body assembly, the structural design of an air inlet chamber, a filtering chamber and an air purifying chamber is matched with control valves on an air inlet pipeline and an air outlet pipeline, air flow entering and exiting can be effectively controlled, an air flow distribution plate between the air inlet chamber and the filtering chamber can enable the air flow to be evenly distributed, and the dust removal efficiency is improved. A plurality of filter bags of the filter bag units in the filter chamber are ensured to be uniformly stressed, the dust filtering efficiency and effect are improved, in the dust cleaning assembly, an air storage tank, a pulse valve array and a blowing pipe are matched, the pulse valve array and the filter bag units are correspondingly arranged, accurate dust cleaning of the filter bag units can be achieved, a Venturi pipe at the tail end of the blowing pipe can enhance the airflow guiding effect, and the dust cleaning effect is improved. In the sensing assembly, a pressure difference transmitter is installed at an inlet and an outlet of a filter chamber, and the pressure difference is monitored in real time to reflect the blockage condition of the filter bag. The dust concentration sensor is located on the air inlet pipeline and monitors the air inlet dust concentration.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of industrial dust removal, in particular to a bag filter control system. BACKGROUND

[0002] The bag filter realizes efficient dust removal through the interception of dust particles on the surface of the filter bag, and is an important technical means to meet the environmental emission standards. At present, the pulse blowing ash removal technology is widely used in the industry. The traditional control system has the problems of shortening the service life of the filter bag, large fluctuation of the running resistance, and high ash removal energy consumption. Although the frequency conversion fan speed regulation and differential pressure feedback regulation energy-saving technologies have been gradually introduced in recent years, these improvements focus on the optimization of a single link, and lack of overall coordinated control strategy for the ash removal process, filtration efficiency and energy consumption.

[0003] The existing bag filter control system has the following problems: on the one hand, the structure design of the dust removal box is not reasonable, the airflow distribution is uneven, the filter bags in the filter chamber are subjected to inconsistent forces, some filter bags are overloaded, which not only affects the dust filtration efficiency and effect, but also shortens the service life of the filter bag; the design of the ash removal assembly may have defects, which cannot realize precise ash removal of each filter bag unit, the ash removal efficiency is not high, and the dust on the surface of the filter bag is easy to accumulate, affecting the air permeability of the filter bag; on the other hand, the monitoring of the system running state is not comprehensive and real-time, the key parameters such as filter bag blockage, damage or shedding state and inlet air temperature are not effectively monitored, it is difficult to accurately master the running state of the dust remover in time; the control assembly has defects in signal transmission and timing control, resulting in unstable control signal transmission and inaccurate action timing, low automation control level; the existing system lacks effective fault diagnosis and early warning mechanism, cannot timely find the faults such as damage, blockage and shedding of the filter bag, and is difficult to automatically adjust the operation strategy according to different working conditions and dust characteristics, so that the environmental adaptability of the system is poor and the operation cost is high, therefore a bag filter control system is proposed. SUMMARY

[0004] The present application provides the following technical scheme: a bag filter control system, comprising: A dust removal box assembly: The dust removal box assembly comprises an inlet chamber, a filter chamber and a clean gas chamber; the filter chamber is provided with a filter bag skeleton and a filter bag unit; the filter bag unit comprises a plurality of filter bags; the inlet chamber is connected with an inlet pipeline, and the inlet pipeline is provided with an inlet control valve; the clean gas chamber is connected with an outlet pipeline, and the outlet pipeline is provided with an outlet control valve; and a gas flow distribution plate is arranged between the inlet chamber and the filter chamber; An ash removal assembly: The gas storage tank, the pulse valve array and the blowing pipe; the pulse valve array is composed of multiple groups of high-speed pulse valves, and the high-speed pulse valve group corresponds to the filter bag unit; the blowing pipe is arranged above the filter bag unit and is connected with the high-speed pulse valve; a Venturi tube is arranged at the end of the blowing pipe; The sensing assembly: The differential pressure transmitter is installed at the inlet and outlet of the filter chamber; the dust concentration sensor is located in the air inlet pipeline; the vibration sensor is attached to the bottom of the filter bag; the sensing assembly further comprises a temperature sensor installed in the air inlet pipeline; The control assembly: The embedded controller is connected with the air inlet control valve, the air outlet control valve, the pulse valve array, the differential pressure transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor through the CAN bus; the control assembly further comprises a timing control module; The fault diagnosis and early warning module: The fault diagnosis and early warning module is used for comprehensive analysis of the signals of the vibration sensor, the differential pressure transmitter and the dust concentration sensor, to judge whether the filter bag has damage, blockage and shedding faults, and to send an early warning signal; The adaptive learning module: The adaptive learning module is used for recording the historical operation data of the dust collector, and optimizing the preset dust cleaning timing and control parameters according to the historical operation data, so that the control system can adapt to different working conditions and dust characteristics.

[0005] The differential pressure transmitter in the sensing assembly collects the differential pressure signals of the inlet and outlet of the filter chamber in real time, the dust concentration sensor obtains the dust concentration data in the air inlet pipeline, the vibration sensor monitors the vibration state of the bottom of the filter bag, and the temperature sensor collects the gas temperature information in the air inlet pipeline. The above multi-dimensional monitoring data is transmitted in real time to the embedded controller of the control assembly through the CAN bus; The embedded controller processes the received sensor data in real time, combines the dust cleaning timing and control parameters preset by the timing control module, and sends instructions to the air inlet control valve and the air outlet control valve to adjust the air inlet and air outlet flow. When the filter chamber pressure difference reaches the preset threshold or reaches the scheduled dust cleaning time, the embedded controller sends a trigger signal to the pulse valve array, the high-speed pulse valve corresponding to the filter bag unit is opened, the compressed air in the gas storage tank is blown to the filter bag unit through the blowing pipe and the Venturi tube at the end, and the pulse dust cleaning operation of the filter bag is realized; The fault diagnosis and early warning module continuously receives the signals of the vibration sensor, the differential pressure transmitter and the dust concentration sensor, judges whether the filter bag has damage, blockage and shedding faults by comprehensively analyzing the vibration amplitude anomaly, pressure difference mutation or dust concentration overrun, etc. If an abnormal state is detected, an early warning signal is immediately sent to prompt the operator to repair. The adaptive learning module records historical operation data of the dust collector in real time, including dust cleaning timing, sensor monitoring data and equipment operation parameters under different working conditions, etc. Through analysis and processing of the historical data, the preset dust cleaning timing and control parameters are automatically optimized, so that the control system can adaptively adjust according to different working conditions and dust characteristics, and continuously maintain an efficient operation state.

[0006] Preferably, the preset dust cleaning timing includes a plurality of dust cleaning periods. In each dust cleaning period, the pulse valve array opens each group of high-speed pulse valves in a preset order, and the opening time and interval time of each group of high-speed pulse valves are both preset values. The timing control module dynamically adjusts the length of the dust cleaning period according to the differential pressure signal.

[0007] In each dust cleaning period, the timing control module controls the pulse valve array to open each group of high-speed pulse valves in a preset order, and the opening time and interval time of each group of high-speed pulse valves are both preset values. Then, the timing control module receives the differential pressure signal from the differential pressure transmitter in real time, and dynamically adjusts the length of the dust cleaning period according to the differential pressure signal.

[0008] Preferably, the embedded controller is further configured to analyze the differential pressure signal detected by the differential pressure transmitter in real time, predict the blockage degree of the filter bag according to the change trend of the differential pressure signal, and adjust the dust cleaning timing in advance according to the prediction result. The embedded controller predicts the blockage degree by comparing the change rate of the current differential pressure signal with historical differential pressure data.

[0009] The embedded controller receives the differential pressure signal detected by the differential pressure transmitter in real time, and analyzes it in real time. Then, the blockage degree of the filter bag is predicted according to the change trend of the differential pressure signal, specifically by comparing the change rate of the current differential pressure signal with historical differential pressure data. Finally, the dust cleaning timing is adjusted in advance according to the prediction result.

[0010] Preferably, after the vibration sensor detects an abnormal vibration signal of the filter bag, the embedded controller further combines the detection signals of the differential pressure transmitter and the dust concentration sensor to judge the fault type of the filter bag. If it is judged that the filter bag is damaged, the intake control valve and the exhaust control valve are controlled to be closed, and the operation of the dust collector is stopped. The embedded controller judges whether the filter bag is damaged by analyzing the frequency characteristics of the vibration signal.

[0011] The vibration sensor detects the vibration signal of the filter bag in real time, and when an abnormal vibration signal is detected, the abnormal signal is transmitted to the embedded controller, and the embedded controller further combines the detection signals of the differential pressure transmitter and the dust concentration sensor to judge the fault type of the filter bag. Specifically, whether the filter bag is damaged is judged by analyzing the frequency characteristics of the vibration signal, and if it is judged that the filter bag is damaged, the intake control valve and the outlet control valve are controlled to be closed to stop the operation of the dust collector.

[0012] Preferably, when the dust concentration sensor detects that the dust concentration in the intake pipeline exceeds the preset concentration threshold, the embedded controller also sends a concentration overrun signal to the external monitoring system, so that the external monitoring system takes corresponding processing measures; the embedded controller also reduces the opening of the intake control valve to reduce the amount of dust-containing gas entering.

[0013] The dust concentration sensor detects the dust concentration in the intake pipeline in real time, and when it is detected that the dust concentration exceeds the preset concentration threshold, an over-limit signal is transmitted to the embedded controller. After receiving the signal, the embedded controller sends a concentration overrun signal to the external monitoring system, so that the external monitoring system takes corresponding processing measures; on the other hand, the opening of the intake control valve is reduced to reduce the amount of dust-containing gas entering.

[0014] Preferably, the embedded controller is provided with a storage module for storing historical detection data of the differential pressure transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor, and historical working state data of the intake control valve, the outlet control valve and the pulse valve array; the storage module also stores preset ash cleaning timing parameters and fault diagnosis rules.

[0015] The storage module built in the embedded controller stores the historical detection data of the differential pressure transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor in real time, and also stores the historical working state data of the intake control valve, the outlet control valve and the pulse valve array. In addition, the storage module also stores preset ash cleaning timing parameters and fault diagnosis rules.

[0016] Preferably, the control assembly further comprises a human-computer interaction interface connected with the embedded controller, for displaying the running state, detection data and fault information of the dust collector, and receiving input instructions of the operator to set the running parameters of the dust collector; the human-computer interaction interface comprises a touch display screen and operation buttons, and displays real-time data curves.

[0017] The human-computer interaction interface is connected with the embedded controller, and real-time receiving of the running state, detection data and fault information of the dust remover from the embedded controller is carried out, and display is carried out, the display content including real-time data curve, simultaneously, the human-computer interaction interface receives the input instruction of the operator, and transmits it to the embedded controller, so that the running parameter of the dust remover is set, the human-computer interaction interface includes a touch display screen and an operation button.

[0018] Preferably, the embedded controller is connected with the remote monitoring center through a wireless communication module, and can transmit the running data and fault information of the dust remover to the remote monitoring center in real time, and simultaneously receives the control instruction of the remote monitoring center to remotely control the dust remover, and the wireless communication module supports multiple communication protocols and can adaptively select the optimal communication link.

[0019] The embedded controller is connected with the remote monitoring center through a wireless communication module, and real-time transmission of the running data and fault information of the dust remover to the remote monitoring center is carried out, and simultaneously, the wireless communication module receives the control instruction of the remote monitoring center and transmits it to the embedded controller to realize remote control of the dust remover, and the wireless communication module supports multiple communication protocols and can adaptively select the optimal communication link.

[0020] Preferably, the control assembly further comprises a backup power supply connected with the embedded controller and each sensor and actuator, for providing temporary power supply for the control system when the main power supply is powered off, so as to ensure that the control system can normally operate in a short time; the backup power supply further comprises a power supply switching module which automatically switches back to the main power supply for power supply after the main power supply is restored.

[0021] The backup power supply is connected with the embedded controller and each sensor and actuator, and when the main power supply is powered off, the power supply switching module automatically switches the power supply to the backup power supply to provide temporary power supply for the control system, so as to ensure that the control system can normally operate in a short time, and when the main power supply is restored, the power supply switching module automatically switches back to the main power supply for power supply.

[0022] Preferably, the air inlet control valve and the air outlet control valve are both electric regulating valves, which can accurately adjust the opening degree of the valve according to the control signal of the embedded controller to realize accurate control of the air inlet amount and the air outlet amount; the electric regulating valve also has a manual adjustment function for manual operation when the control system fails.

[0023] The air inlet control valve and the air outlet control valve are electric regulating valves, which real-time receive the control signal of the embedded controller and accurately adjust the opening degree of the valve according to the control signal to realize accurate control of the air inlet amount and the air outlet amount, and the electric regulating valve has a manual adjustment function, and when the control system fails, the operator can manually adjust the opening degree of the valve.

[0024] Compared with the prior art, the cloth bag dust collector control system has the following beneficial effects: In the dust removal box assembly, the structure design of the air inlet chamber, the filter chamber and the clean air chamber cooperates with the control valves on the air inlet pipeline and the air outlet pipeline to effectively control the air flow in and out, and the air flow distribution plate between the air inlet chamber and the filter chamber can uniformly distribute the air flow to ensure that the plurality of filter bags in the filter bag unit in the filter chamber are uniformly stressed, thereby improving the dust filtration efficiency and filtration effect. In the dust removal assembly, the cooperation of the gas storage tank, the pulse valve array and the blowing pipe, especially the corresponding arrangement of the pulse valve array and the filter bag unit, can realize accurate dust removal of each filter bag unit, the Venturi tube at the end of the blowing pipe can enhance the air flow guiding effect during blowing, improve the dust removal efficiency, reduce the dust accumulation on the surface of the filter bag, and protect the air permeability of the filter bag. The differential pressure transmitter in the sensing assembly is installed at the inlet and outlet of the filter chamber to monitor the pressure difference before and after filtration in real time, reflecting the blockage of the filter bag; the dust concentration sensor is located in the air inlet pipeline to monitor the dust concentration of the inlet air, providing a basis for adjusting the system operation parameters; the vibration sensor is attached to the bottom of the filter bag to sense the vibration state of the filter bag and determine whether the filter bag is falling off or damaged; the temperature sensor is installed in the air inlet pipeline to monitor the inlet air temperature to prevent high-temperature gas from damaging the filter bag; the sensors work together to realize comprehensive real-time monitoring of the system operation state. The control assembly adopts an embedded controller to connect each component through a CAN bus, ensuring stable transmission and real-time response of the control signal, and the timing control module can accurately control the dust removal timing and the action timing of each valve and pulse valve, thereby improving the automatic control level of the system and making the system operation more orderly. The fault diagnosis and early warning module comprehensively analyzes the signals of the vibration sensor, the differential pressure transmitter and the dust concentration sensor to accurately determine whether the filter bag has damage, blockage and falling off faults in time and issue a warning signal, so that the staff can handle the fault in time to avoid the expansion of the fault and improve the reliability and safety of the system operation. The adaptive learning module records the historical operation data of the dust collector and optimizes the preset dust removal timing and control parameters according to the historical data, so that the control system can automatically adjust the operation strategy according to different working conditions and dust characteristics, enhance the environmental adaptability of the system, improve the dust removal efficiency, realize energy saving and optimization, and reduce the operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic block diagram of the system of the present application.

[0026] Figure 2 is a schematic diagram of the dust removal box assembly and the dust removal assembly of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0028] Please refer to Figure 1 With Figure 2 The present application provides a technical solution, a cloth bag dust collector control system, comprising: Dust removal tank assembly: It comprises an air inlet chamber, a filter chamber and a clean gas chamber. The filter chamber is provided with a filter bag skeleton and a filter bag unit. The filter bag unit comprises a plurality of filter bags. The air inlet chamber is connected with an air inlet pipeline, and an air inlet control valve is arranged on the air inlet pipeline. The clean gas chamber is connected with an air outlet pipeline, and an air outlet control valve is arranged on the air outlet pipeline. An air flow distribution plate is arranged between the air inlet chamber and the filter chamber. Ash removal assembly: It comprises a gas storage tank, a pulse valve array and a blowpipe. The pulse valve array is composed of a plurality of high-speed pulse valves, and the high-speed pulse valve groups correspond to the filter bag units. The blowpipe is arranged above the filter bag unit and is connected with the high-speed pulse valve. A Venturi tube is arranged at the end of the blowpipe. Sensing assembly: It comprises a differential pressure transmitter, a dust concentration sensor and a vibration sensor. The differential pressure transmitter is installed at the inlet and outlet of the filter chamber. The dust concentration sensor is located in the air inlet pipeline. The vibration sensor is attached to the bottom of the filter bag. The sensing assembly further comprises a temperature sensor installed in the air inlet pipeline. Control assembly: It comprises an embedded controller. The embedded controller is connected with the air inlet control valve, the air outlet control valve, the pulse valve array, the differential pressure transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor through a CAN bus. The control assembly further comprises a timing control module. Fault diagnosis and early warning module: The fault diagnosis and early warning module is used for comprehensive analysis of the signals of the vibration sensor, the differential pressure transmitter and the dust concentration sensor, to determine whether the filter bag has damage, blockage and shedding faults, and to send an early warning signal. Self-adaptive learning module: The self-adaptive learning module is used for recording the historical operation data of the dust collector, and optimizing the preset ash removal timing and control parameters according to the historical operation data, so that the control system can adapt to different working conditions and dust characteristics.

[0029] The differential pressure transmitter in the sensing assembly collects the differential pressure signal of the filter chamber inlet and outlet in real time, the dust concentration sensor obtains the dust concentration data in the air inlet pipeline, the vibration sensor monitors the vibration state of the filter bag bottom, and the temperature sensor collects the gas temperature information in the air inlet pipeline. The above multi-dimensional monitoring data is transmitted in real time to the embedded controller of the control assembly through the CAN bus; The embedded controller processes the received sensor data in real time, combines the preset cleaning timing and control parameters of the timing control module, and sends instructions to the air inlet control valve and the air outlet control valve to adjust the air inlet and air outlet flow. When the filter chamber pressure difference reaches the preset threshold or reaches the specified cleaning time, the embedded controller sends a trigger signal to the pulse valve array, and the high-speed pulse valve corresponding to the filter bag unit is opened. The compressed air in the gas storage tank is sprayed through the spray pipe and the end of the Venturi tube to the filter bag unit, realizing pulse cleaning operation of the filter bag. The fault diagnosis and early warning module continuously receives signals from the vibration sensor, differential pressure transmitter and dust concentration sensor, analyzes the vibration amplitude anomaly, pressure difference mutation or dust concentration overrun, and judges whether the filter bag has damage, blockage and shedding failure. If an abnormal state is detected, an early warning signal is immediately sent to prompt the operator to repair; The adaptive learning module records the historical operation data of the dust collector in real time, including the cleaning timing, sensor monitoring data and equipment operation parameters under different working conditions. Through analysis and processing of historical data, the preset cleaning timing and control parameters are automatically optimized, so that the control system can adaptively adjust according to different working conditions and dust characteristics, and continuously maintain an efficient running state. The sensing assembly integrates differential pressure transmitter, dust concentration sensor, vibration sensor and temperature sensor, realizes multi-parameter real-time monitoring of filter chamber pressure difference, air inlet dust concentration, filter bag vibration state and air inlet temperature, provides comprehensive operation data for the control system, and ensures that the embedded controller can accurately adjust the air inlet, air outlet control valve and pulse valve array according to the actual working condition, improving the automation control level of the dust removal process. The spray pipe in the cleaning assembly is arranged corresponding to the filter bag unit, and the end is configured with a Venturi tube, which can enhance the induction of the spray gas flow, improve the cleaning efficiency, and ensure that the dust on the surface of the filter bag falls off effectively. At the same time, through the synergistic effect of the timing control module and the adaptive learning module, the cleaning timing can be dynamically adjusted according to the dust characteristics and working condition changes, avoiding excessive cleaning or insufficient cleaning, ensuring the dust removal effect while reducing compressed air consumption, and realizing energy saving and consumption reduction. The fault diagnosis and early warning module can accurately judge the damage, blockage and shedding faults of the filter bag through comprehensive analysis of the vibration, pressure difference and dust concentration signals, changes the limitations of traditional single parameter diagnosis, improves the accuracy and timeliness of fault identification, provides a basis for equipment maintenance through early warning of potential faults, avoids the decrease of dust removal efficiency or system shutdown caused by filter bag faults, and ensures the safe and stable operation of the dust remover; The adaptive learning module automatically optimizes the ash removal timing and control parameters by recording and analyzing historical operation data, so that the control system can adapt to changes in factors such as dust concentration, particle size and temperature under different working conditions. This adaptive ability reduces the cost of manual debugging, improves the adaptability of the dust remover to complex working conditions, ensures efficient and stable dust removal effect in long-term operation, and prolongs the overall service life. The airflow distribution plate arranged between the inlet chamber and the filter chamber in the dust removal box assembly can uniformly distribute the dust-containing airflow entering the filter chamber, avoid excessive local airflow causing uneven load on the filter bag, and improve the overall filtering efficiency and service life of the filter bag. At the same time, the control valves on the inlet pipe and the outlet pipe cooperate with the adjustment of the embedded controller to flexibly control the inlet and outlet air volume, meeting the dust removal needs under different working conditions.

[0030] The preset ash removal timing includes multiple ash removal periods. In each ash removal period, the pulse valve array opens each group of high-speed pulse valves in a preset order, and the opening time and interval time of each group of high-speed pulse valves are both preset values. The timing control module dynamically adjusts the length of the ash removal period according to the pressure difference signal.

[0031] In each ash removal period, the timing control module controls the pulse valve array to open each group of high-speed pulse valves in a preset order, and the opening time and interval time of each group of high-speed pulse valves are both preset values. Then, the timing control module receives the pressure difference signal from the pressure difference transmitter in real time, and dynamically adjusts the length of the ash removal period according to the pressure difference signal. This working mode can make the pulse valve array perform ash removal operation in a reasonable order and time, ensure the stability of the ash removal effect, dynamically adjust the ash removal period length according to the pressure difference signal, avoid excessive ash removal or insufficient ash removal, improve the ash removal efficiency, and save energy consumption.

[0032] The embedded controller is also used for real-time analysis of the pressure difference signal detected by the pressure difference transmitter, prediction of the blockage degree of the filter bag according to the change trend of the pressure difference signal, and advance adjustment of the ash removal timing according to the prediction result. The embedded controller predicts the blockage degree by comparing the change rate of the current pressure difference signal with the historical pressure difference data.

[0033] The embedded controller receives the differential pressure signal detected by the differential pressure transmitter in real time, analyzes it in real time, then predicts the degree of filter bag blockage according to the change trend of the differential pressure signal, specifically by comparing the change rate of the current differential pressure signal with historical differential pressure data to predict the degree of blockage, and finally adjusts the timing of dust removal in advance according to the prediction result; Predicting the degree of filter bag blockage in advance and adjusting the timing of dust removal can make the dust removal work more forward-looking, and make corresponding adjustments before the filter bag blockage changes, avoiding the serious impact of filter bag blockage on the normal operation of the dust collector, and improving the stability and reliability of the operation of the dust collector.

[0034] After the vibration sensor detects an abnormal vibration signal of the filter bag, the embedded controller further combines the detection signals of the differential pressure transmitter and the dust concentration sensor to judge the fault type of the filter bag. If it is judged that the filter bag is damaged, the intake control valve and the exhaust control valve are controlled to be closed to stop the operation of the dust collector. The embedded controller judges whether the filter bag is damaged by analyzing the frequency characteristics of the vibration signal.

[0035] The vibration sensor detects the vibration signal of the filter bag in real time, and transmits the abnormal signal to the embedded controller when an abnormal vibration signal is detected. The embedded controller further combines the detection signals of the differential pressure transmitter and the dust concentration sensor to judge the fault type of the filter bag. Specifically, whether the filter bag is damaged is judged by analyzing the frequency characteristics of the vibration signal. If it is judged that the filter bag is damaged, the intake control valve and the exhaust control valve are controlled to be closed to stop the operation of the dust collector. Judging the fault type of the filter bag by combining multiple sensor detection signals can more accurately locate the fault condition of the filter bag, stop the operation of the dust collector in time when the filter bag is damaged, effectively prevent more serious problems caused by filter bag damage, protect the dust collector, and reduce equipment damage and maintenance costs.

[0036] When the dust concentration sensor detects that the dust concentration in the intake pipeline exceeds the preset concentration threshold, the embedded controller also sends a concentration overrun signal to the external monitoring system so that the external monitoring system takes appropriate handling measures. The embedded controller also reduces the opening of the intake control valve to reduce the amount of dust-containing gas entering.

[0037] The dust concentration sensor detects the dust concentration in the intake pipeline in real time. When it is detected that the dust concentration exceeds the preset concentration threshold, the over-limit signal is transmitted to the embedded controller. After receiving the signal, the embedded controller sends a concentration overrun signal to the external monitoring system on the one hand so that the external monitoring system takes appropriate handling measures. On the other hand, it also reduces the opening of the intake control valve to reduce the amount of dust-containing gas entering. The dust concentration is detected in time, and corresponding measures are taken, so that the dust concentration is quickly responded to, a signal is sent to an external monitoring system, multi-party cooperative processing is realized, the opening degree of the inlet control valve is reduced, the dust-containing gas is reduced, the dust collector is prevented from overloading due to high dust concentration, and the normal working environment of the dust collector is ensured.

[0038] The embedded controller is internally provided with a storage module for storing historical detection data of the differential pressure transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor, and historical working state data of the inlet control valve, the outlet control valve and the pulse valve array; the storage module also stores preset ash cleaning timing parameters and fault diagnosis rules.

[0039] The embedded controller is internally provided with a storage module for storing historical detection data of the differential pressure transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor, and historical working state data of the inlet control valve, the outlet control valve and the pulse valve array; the storage module also stores preset ash cleaning timing parameters and fault diagnosis rules. The storage of various historical detection data and working state data provides rich data support for subsequent analysis and fault diagnosis of the operation of the dust collector, and the storage of preset ash cleaning timing parameters and fault diagnosis rules provides a basis for the embedded controller to control ash cleaning and judge faults, thereby improving the intelligent level and accuracy of dust collector control.

[0040] The control assembly further comprises a human-computer interaction interface connected with the embedded controller, for displaying the running state, detection data and fault information of the dust collector, and receiving input instructions of the operator to set the operating parameters of the dust collector; the human-computer interaction interface comprises a touch display screen and operation buttons, and displays real-time data curves.

[0041] The human-computer interaction interface is connected with the embedded controller, and receives the running state, detection data and fault information of the dust collector from the embedded controller in real time, and displays the same; the display content includes real-time data curves, and the human-computer interaction interface receives input instructions of the operator and transmits the same to the embedded controller, so as to set the operating parameters of the dust collector; the human-computer interaction interface comprises a touch display screen and operation buttons. The human-computer interaction interface provides an intuitive display and a convenient operation mode for the operator, so that the operator can know the running condition of the dust collector in real time, and conveniently set parameters and handle faults, thereby improving the convenience and efficiency of human-computer interaction, and enabling the operator to more effectively monitor and manage the dust collector.

[0042] The embedded controller is connected with the remote monitoring center through the wireless communication module, can transmit the running data and fault information of the dust collector to the remote monitoring center in real time, receives the control instruction of the remote monitoring center at the same time, and controls the dust collector remotely; the wireless communication module supports multiple communication protocols and can adaptively select the optimal communication link.

[0043] The embedded controller is connected with the remote monitoring center through the wireless communication module, can transmit the running data and fault information of the dust collector to the remote monitoring center in real time, receives the control instruction of the remote monitoring center at the same time, and controls the dust collector remotely; the wireless communication module supports multiple communication protocols and can adaptively select the optimal communication link. Real-time communication between the dust collector and the remote monitoring center is realized, the remote monitoring center can timely master the running condition of the dust collector, centralized management and remote control are facilitated, the wireless communication module adaptively selects the optimal communication link, the stability and reliability of communication are ensured, and the remote control capability and management efficiency of the dust collector are improved.

[0044] The control assembly further comprises a backup power supply connected with the embedded controller and each sensor and actuator, for providing temporary power supply for the control system when the main power supply is powered off, so that the control system can normally operate in a short time; the backup power supply further comprises a power supply switching module which automatically switches back to the main power supply for power supply after the main power supply is restored.

[0045] The backup power supply is connected with the embedded controller and each sensor and actuator, when the main power supply is powered off, the power supply switching module automatically switches the power supply to the backup power supply to provide temporary power supply for the control system, so that the control system can normally operate in a short time, and when the main power supply is restored, the power supply switching module automatically switches back to the main power supply for power supply. When the main power supply is powered off, the backup power supply can ensure that the control system normally operates in a short time, avoids data loss and equipment failure caused by sudden power failure, provides protection for equipment state maintenance and data recording during the recovery of the main power supply, automatically switches back to the main power supply for power supply after the main power supply is restored, ensures the continuity and stability of power supply, and improves the reliability of the dust collector control system.

[0046] The inlet control valve and the outlet control valve are both electric regulating valves, which can accurately adjust the opening of the valve according to the control signal of the embedded controller, so as to accurately control the inlet air volume and outlet air volume; the electric regulating valve also has a manual adjustment function for manual operation when the control system fails.

[0047] The inlet control valve and the outlet control valve are electric regulating valves, which receive the control signal of the embedded controller in real time, and accurately adjust the opening degree of the valve according to the control signal, so as to realize the accurate control of the inlet and outlet air quantity. At the same time, the electric regulating valve has a manual adjustment function. When the control system fails, the operator can manually adjust the opening degree of the valve. The electric regulating valve can accurately adjust the opening degree of the valve according to the control signal, realize the accurate control of the inlet and outlet air quantity, make the operation parameters of the dust collector more meet the actual demand, improve the operation precision and efficiency of the dust collector, and provide a backup operation mode when the control system fails, so as to ensure that the valve can still be adjusted in special circumstances, and improve the flexibility and reliability of the equipment.

[0048] In the scheme, the differential pressure transmitter in the sensing assembly collects the differential pressure signals of the inlet and outlet of the filter chamber in real time, the dust concentration sensor obtains the dust concentration data in the inlet pipeline, the vibration sensor monitors the vibration state of the bottom of the filter bag, and the temperature sensor collects the gas temperature information in the inlet pipeline. The above multi-dimensional monitoring data is transmitted to the embedded controller of the control assembly in real time through the CAN bus. The storage module built in the embedded controller stores the historical detection data of the differential pressure transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor in real time, and stores the historical working state data of the inlet control valve, the outlet control valve and the pulse valve array. In addition, the storage module also stores the preset cleaning timing parameters and fault diagnosis rules. The embedded controller processes the received sensor data in real time, combines the cleaning timing and control parameters preset by the timing control module, and sends instructions to the inlet control valve and the outlet control valve to adjust the inlet and outlet flow. The inlet control valve and the outlet control valve are electric regulating valves, which receive the control signal of the embedded controller in real time, and accurately adjust the opening degree of the valve according to the control signal, so as to realize the accurate control of the inlet and outlet air quantity. At the same time, the electric regulating valve has a manual adjustment function. When the control system fails, the operator can manually adjust the opening degree of the valve. When it is detected that the differential pressure of the filter chamber reaches the preset threshold value or reaches the specified cleaning time, the embedded controller sends a trigger signal to the pulse valve array, the high-speed pulse valve corresponding to the filter bag unit is opened, the compressed air in the gas storage tank is blown to the filter bag unit through the blowing pipe and the end of the Venturi tube, and the pulse cleaning operation of the filter bag is realized. In each cleaning period, the timing control module controls the pulse valve array to open each group of high-speed pulse valves in a preset order, and the opening time and interval time of each group of high-speed pulse valves are preset values. Then, the timing control module receives the differential pressure signal transmitted by the differential pressure transmitter in real time, and dynamically adjusts the length of the cleaning period according to the differential pressure signal. The embedded controller is also used to perform real-time analysis of the differential pressure signal detected by the differential pressure transmitter. By comparing the rate of change of the current differential pressure signal with the historical differential pressure data, the filter bag blockage degree is predicted based on the trend of the differential pressure signal and the cleaning sequence is adjusted in advance based on the prediction results. The fault diagnosis and early warning module continuously receives signals from the vibration sensor, differential pressure transmitter and dust concentration sensor. The vibration sensor detects the vibration signal of the filter bag in real time. When an abnormal vibration signal is detected, the abnormal signal is transmitted to the embedded controller. The embedded controller further combines the detection signals of the differential pressure transmitter and the dust concentration sensor to judge the fault type of the filter bag by analyzing the frequency characteristics of the vibration signal. If it is judged that the filter bag is damaged, the air inlet control valve and the air outlet control valve are controlled to close and the operation of the dust collector is stopped. By comprehensively analyzing the abnormal vibration amplitude, sudden pressure difference or excessive dust concentration and other characteristics, it is judged whether the filter bag is damaged, blocked or falling off. If an abnormal state is detected, an early warning signal is immediately issued to prompt the operator to carry out maintenance. The dust concentration sensor detects the dust concentration in the air intake duct in real time. When it detects that the dust concentration exceeds the preset concentration threshold, it transmits an excess signal to the embedded controller. After receiving the signal, the embedded controller sends a concentration excess signal to the external monitoring system so that the external monitoring system can take appropriate treatment measures. At the same time, it reduces the opening of the air intake control valve to reduce the amount of dust-laden gas entering. The adaptive learning module records the dust collector's historical operating data in real time, including cleaning timing, sensor monitoring data, and equipment operating parameters under different operating conditions. By analyzing and processing historical data, it automatically optimizes the preset cleaning timing and control parameters, enabling the control system to adaptively adjust to different operating conditions and dust characteristics, maintaining continuous and efficient operation. The human-machine interaction interface is connected to the embedded controller, and receives and displays the dust collector operating status, detection data and fault information from the embedded controller in real time. The display content includes real-time data curves. At the same time, the human-machine interaction interface receives the operator's input instructions and transmits them to the embedded controller so as to set the dust collector operating parameters. The human-machine interaction interface includes a touch screen and operation buttons. The embedded controller establishes a connection with the remote monitoring center through the wireless communication module, and transmits the dust collector's operating data and fault information to the remote monitoring center in real time. At the same time, the wireless communication module receives the control instructions from the remote monitoring center and transmits them to the embedded controller to realize remote control of the dust collector. The wireless communication module supports multiple communication protocols and can adaptively select the optimal communication link. The standby power supply is connected with the embedded controller and each sensor and actuator. When the main power supply is powered off, the power supply switching module automatically switches the power supply to the standby power supply to provide temporary power supply for the control system, so that the control system can normally operate in a short time. When the main power supply is restored, the power supply switching module automatically switches back to the main power supply.

[0049] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A bag filter control system, characterized in that: include: Dust removal box components: It includes an air inlet chamber, a filter chamber and a clean air chamber; the filter chamber is provided with a filter bag frame and a filter bag unit; the filter bag unit contains a plurality of filter bags; the air inlet chamber is connected to an air inlet pipe, on which an air inlet control valve is provided; the clean air chamber is connected to an air outlet pipe, on which an air outlet control valve is provided; an air flow distribution plate is provided between the air inlet chamber and the filter chamber; Cleaning components: It includes an air storage tank, a pulse valve array and a blow pipe; the pulse valve array is composed of multiple groups of high-speed pulse valves, and the high-speed pulse valve groups correspond to the filter bag units; the blow pipe is arranged above the filter bag unit and connected to the high-speed pulse valve; a venturi tube is provided at the end of the blow pipe; Sensing components: It includes a differential pressure transmitter, a dust concentration sensor and a vibration sensor; the differential pressure transmitter is installed at the inlet and outlet of the filter chamber; the dust concentration sensor is located in the air intake duct; the vibration sensor is attached to the bottom of the filter bag; the sensor assembly also includes a temperature sensor, which is installed in the air intake duct; Control components: It includes an embedded controller; the embedded controller is connected to the air inlet control valve, the air outlet control valve, the pulse valve array, the pressure differential transmitter, the dust concentration sensor, the vibration sensor and the temperature sensor through the CAN bus; the control component also includes a timing control module; Fault diagnosis and early warning module: The fault diagnosis and early warning module is used to comprehensively analyze the signals of the vibration sensor, differential pressure transmitter and dust concentration sensor to determine whether the filter bag is damaged, blocked or falling off, and issue an early warning signal; Adaptive learning modules: The adaptive learning module is used to record the historical operating data of the dust collector and optimize the preset cleaning timing and control parameters based on the historical operating data, so that the control system can adapt to different working conditions and dust characteristics.

2. A bag filter control system according to claim 1, characterized in that: The preset cleaning sequence includes multiple cleaning cycles. In each cleaning cycle, the pulse valve array opens each group of high-speed pulse valves in sequence according to a preset order, and the opening time and interval time of each group of high-speed pulse valves are both preset values; the timing control module dynamically adjusts the duration of the cleaning cycle according to the pressure difference signal.

3. The bag filter control system according to claim 1, characterized in that: The embedded controller is also used to perform real-time analysis on the differential pressure signal detected by the differential pressure transmitter, predict the degree of filter bag clogging based on the changing trend of the differential pressure signal, and adjust the dust cleaning sequence in advance based on the prediction result; The embedded controller predicts the degree of blockage by comparing the change rate of the current pressure difference signal with the historical pressure difference data.

4. The bag filter control system according to claim 1, characterized in that: After the vibration sensor detects an abnormal vibration signal of the filter bag, the embedded controller further combines the detection signals of the differential pressure transmitter and the dust concentration sensor to determine the fault type of the filter bag. If it is determined that the filter bag is damaged, the air inlet control valve and the air outlet control valve are controlled to close, and the operation of the dust collector is stopped; the embedded controller determines whether the filter bag is damaged by analyzing the frequency characteristics of the vibration signal.

5. The bag filter control system according to claim 1, characterized in that: When the dust concentration sensor detects that the dust concentration in the air intake duct exceeds a preset concentration threshold, the embedded controller also sends a concentration excess signal to the external monitoring system so that the external monitoring system can take corresponding processing measures; the embedded controller also reduces the opening of the air intake control valve to reduce the amount of dust-laden gas entering.

6. The bag filter control system according to claim 1, characterized in that: The embedded controller has a built-in storage module for storing historical detection data of the differential pressure transmitter, dust concentration sensor, vibration sensor and temperature sensor, as well as historical working status data of the air intake control valve, air outlet control valve and pulse valve array; the storage module also stores preset cleaning timing parameters and fault diagnosis rules.

7. The bag filter control system according to claim 1, characterized in that: The control component also includes a human-computer interaction interface, which is connected to the embedded controller and is used to display the operating status, detection data and fault information of the dust collector, and at the same time receive input instructions from the operator to set the operating parameters of the dust collector; the human-computer interaction interface includes a touch display screen and operation buttons to display real-time data curves.

8. The bag filter control system according to claim 1, characterized in that: The embedded controller is connected to the remote monitoring center via a wireless communication module, and can transmit the dust collector's operating data and fault information to the remote monitoring center in real time, while receiving control instructions from the remote monitoring center to remotely control the dust collector; the wireless communication module supports multiple communication protocols and adaptively selects the optimal communication link.

9. The bag filter control system according to claim 1, characterized in that: The control component also includes a backup power supply, which is connected to the embedded controller and various sensors and actuators, and is used to provide temporary power to the control system when the main power is cut off, ensuring that the control system can operate normally in a short period of time; the backup power supply also includes a power switching module, which automatically switches back to the main power supply after the main power is restored.

10. The bag filter control system according to claim 1, characterized in that: The air intake control valve and the air outlet control valve are both electric regulating valves, which can accurately adjust the valve opening according to the control signal of the embedded controller to achieve precise control of the air intake and air outlet volumes; the electric regulating valve also has a manual adjustment function, which can be manually operated when the control system fails.

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