Fireproof intelligent monitoring and automatic disposal system for belt conveyor

Abstract

The invention discloses an intelligent monitoring and automatic handling system for fire prevention of a belt conveyor, and relates to the technical field of fire prevention of belt conveyors. A fireproof intelligent monitoring and automatic handling system for a belt conveyor comprises a sensing monitoring module used for collecting state signals of key parts of the belt conveyor; and the central processing module is in signal connection with the sensing monitoring module and is used for receiving and analyzing the state signal, comparing the state signal with a preset threshold value, performing intelligent judgment and generating a control instruction. According to the fireproof intelligent monitoring and automatic handling system for the belt conveyor, all-weather and all-directional state monitoring of key parts of the belt conveyor is achieved by deploying various sensor arrays, the limitation of manual inspection on time, space and energy is overcome, monitoring blind areas are eliminated, and the safety of the belt conveyor is improved. The system carries out judgment and action completely based on objective data, so that missing detection, misjudgment and treatment delay caused by poor responsibility, insufficient experience or fatigue negligence of personnel are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of belt conveyor fire prevention, and particularly relates to a belt conveyor fire prevention intelligent monitoring and automatic disposal system. BACKGROUND

[0002] Currently, the belt conveyor conveying system faces some fire hazards, and the main reasons are as follows: 1, the rotating part of the equipment cannot rotate due to bearing failure, and the belt and the drum rub and generate heat; 2, the heat source brought by red-hot raw materials and the heat source brought by abnormal surrounding production equipment; 3, the accumulated materials are not cleaned in time, and the friction with the return belt ignites, or the raw materials are coal powder, and the friction generates heat to cause spontaneous combustion; 4, the heat of the deflection roller bearing cannot be dissipated in time when the machine stops, and is conducted to the contact belt to cause a fire; 5, the fire during maintenance operation is not standardized, and the equipment is not installed in place.

[0003] Currently, the fire prevention of the belt conveyor mainly relies on manual inspection and system management, such as regular inspection, cleaning of accumulated materials, etc. This method has obvious disadvantages: first, the number and energy of personnel are limited, and it is impossible to realize 24-hour uninterrupted monitoring; second, the belt conveyor is usually very long, and the inspection personnel cannot timely discover the abnormalities in hidden positions in the early stage of fire; finally, the response speed of manual operation is slow, and the measures such as water cooling taken after discovering the hidden danger are inefficient, and in some cases, the measures may even accelerate the occurrence of fire. SUMMARY

[0004] The purpose of the present application is to provide a belt conveyor fire prevention intelligent monitoring and automatic disposal system, which realizes all-weather and all-around state monitoring of the key parts of the belt conveyor by deploying various sensor arrays, overcomes the limitations of manual inspection in time, space and energy, and eliminates the monitoring blind area, so as to solve the problems in the above background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a belt conveyor fire prevention intelligent monitoring and automatic disposal system, comprising:

[0006] A sensing and monitoring module for collecting state signals of key parts of the belt conveyor;

[0007] A central processing module connected with the sensing and monitoring module for receiving, analyzing and comparing the state signals with preset threshold values and intelligently judging to generate control instructions;

[0008] An alarm module connected with the central processing module for receiving the control instructions and executing multi-level alarms;

[0009] An execution disposal module connected with the central processing module for receiving the control instructions and executing automatic disposal operations on the fire hazard points.

[0010] Preferably, the sensing and monitoring module comprises an infrared temperature sensor array, which is arranged at one or more of the following key positions: bearing seat of the drive roller and the redirection roller, head / middle / tail of the belt surface, area prone to material accumulation, electrical wiring slot, and electrical control cabinet, for real-time monitoring of temperature data.

[0011] Preferably, the sensing and monitoring module comprises a material level monitoring sensor, which is an ultrasonic radar or laser sensor, arranged at the area prone to material accumulation of the belt conveyor, for detecting the material accumulation height.

[0012] Preferably, the sensing and monitoring module comprises a running state sensor and a current sensor for monitoring the running current of the drive motor; the running state sensor comprises a photoelectric sensor or a limit switch for monitoring the belt deviation.

[0013] Preferably, the execution and treatment module comprises an automatic spray cooling device, which is composed of a solenoid valve and a control pipeline, and is arranged at a position corresponding to the monitoring point of the infrared temperature sensor array.

[0014] Preferably, the execution and treatment module comprises a dedicated fire extinguishing agent automatic injection device, which is arranged in the electrical wiring slot or the electrical control cabinet, for automatically injecting the electrical fire extinguishing agent when a fire is detected.

[0015] Preferably, the execution and treatment module further comprises a sensor purging device, which is installed beside the sensor in a heavy dust area, for periodic purging to keep the sensor detection window clean.

[0016] Preferably, the central processing module is built-in with an algorithm program, which performs trend analysis on the received state signals, and is provided with multiple levels of early warning and alarm thresholds; the central processing module is further connected with a database for storing historical data, operation records, and alarm events for query and fault tracing.

[0017] Preferably, the alarm module comprises at least one of the following alarm modes: sound alarm, light alarm, and graphical alarm on the control room screen; the alarm module is further provided with an interface linked with the factory fire control center, for sending a linkage signal in the case of serious alarm.

[0018] Preferably, the belt conveyor comprises a belt body, the belt body is sequentially provided with an inlet main roller fireproof device, an inlet redirection roller fireproof device, at least one middle redirection roller fireproof device, an outlet redirection roller fireproof device and an outlet main roller fireproof device along a material conveying direction, the inlet main roller fireproof device and the outlet main roller fireproof device both comprise a main frame and an extension frame, the main frame is provided with a first temperature sensor and a first spray head, the extension frame is provided with a material position radar, a second temperature sensor and a second spray head, and the inlet redirection roller fireproof device, the middle redirection roller fireproof device and the outlet redirection roller fireproof device all comprise a main frame.

[0019] Compared with the prior art, the belt conveyor fireproof intelligent monitoring and automatic disposal system provided by the application has the beneficial effects that: the system realizes all-weather and all-around state monitoring of key positions of the belt conveyor by deploying various sensor arrays, overcomes the limitations of manual inspection in time, space and energy, eliminates monitoring blind spots, makes judgments and actions based on objective data, avoids missed inspection, misjudgment and disposal delay caused by personnel's lack of responsibility, insufficient experience or fatigue negligence, and once the fire risk is confirmed, the system can immediately start a graded response, automatically sprays cooling water and special extinguishing agent to accurately and efficiently dispose of the hidden danger point, avoids the poor effect or secondary damage caused by manual watering, effectively controls the development of the situation and prevents small fires from becoming major disasters. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural diagram of the belt conveyor of the application;

[0021] Figure 2 It is a structural diagram of the inlet main roller fireproof device of the application;

[0022] Figure 3 It is a structural diagram of the outlet main roller fireproof device of the application;

[0023] Figure 4 It is a structural diagram of the middle redirection roller fireproof device of the application;

[0024] Figure 5 It is an alarm interface diagram of the belt conveyor fireproof intelligent monitoring and automatic disposal system of the application;

[0025] Figure 6 It is an alarm query interface diagram of the belt conveyor fireproof intelligent monitoring and automatic disposal system of the application.

[0026] In the figure: 1, the belt body; 11, the material conveying belt; 12, the return belt; 2, the main roller fireproof device of the inlet; 21, the main frame; 211, the first temperature sensor; 212, the first spray head; 22, the extension frame; 221, the material position radar; 222, the second temperature sensor; 223, the second spray head; 3, the fireproof device of the reversing roller of the inlet; 4, the fireproof device of the reversing roller of the middle; 5, the fireproof device of the reversing roller of the outlet; 6, the main roller fireproof device of the outlet. 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 those skilled in the art without creative work fall within the protection scope of the present application.

[0028] Please refer to Figures 1-6 A fireproof intelligent monitoring and automatic disposal system of a belt conveyor, comprising a sensing and monitoring module, a central processing module, an alarm module and an execution disposal module.

[0029] The sensing and monitoring module is used for collecting state signals of key positions of the belt conveyor, and specifically comprises the following sensors:

[0030] An infrared temperature sensor array is arranged at the bearing seat of the driving roller and the reversing roller, the key positions of the belt surface, the area prone to material accumulation, the electrical circuit slot and the electrical control cabinet, and is used for monitoring temperature data in real time.

[0031] A material level monitoring sensor is arranged at the material falling point and the material guide groove of the belt conveyor, and is used for detecting the material accumulation height.

[0032] A running state sensor comprises a photoelectric sensor or a limit switch for monitoring the deviation of the belt.

[0033] A current sensor is used for monitoring the running current of the driving motor in the driving system equipped with a frequency converter.

[0034] In the embodiment, the belt conveyor comprises a belt body 1, which is sequentially provided with a fireproof device 2 of a feeding port main roller, a fireproof device 3 of a feeding port redirection roller, a fireproof device 4 of a middle redirection roller, a fireproof device 5 of a discharging port redirection roller and a fireproof device 6 of a discharging port main roller from the feeding port end to the discharging port end. The fireproof device 2 of the feeding port main roller, the fireproof device 3 of the feeding port redirection roller, the fireproof device 4 of the middle redirection roller, the fireproof device 5 of the discharging port redirection roller and the fireproof device 6 of the discharging port main roller are sequentially arranged on the feeding port main roller, the feeding port redirection roller, the middle redirection roller, the discharging port redirection roller and the discharging port main roller. The belt body 1 above the feeding port main roller and the discharging port main roller is a material conveying belt 11 for receiving and transporting materials. The belt body 1 below the material conveying belt 11 is in contact with the redirection rollers and is a return belt 12. Three middle redirection rollers are arranged at the middle position of the return belt 12. The bearing seat of each of the three middle redirection rollers is provided with the fireproof device 4 of the middle redirection roller.

[0035] Specifically, the fireproof device 2 of the feeding port main roller and the fireproof device 6 of the discharging port main roller each comprise a main frame 21 and an extension frame 22. The extension frame 22 is arranged on the side wall of the main frame 21 close to the end of the belt body 1. The main frame 21 of the fireproof device 2 of the feeding port main roller and the fireproof device 6 of the discharging port main roller is provided with a bearing seat on the side close to the redirection roller. The extension frame 22 is arranged at the two end positions above the feeding port main roller and the discharging port main roller. The main frame 21 is provided with a first temperature sensor 211 and a first spray head 212. The end of the extension frame 22 away from the main frame 21 is provided with a material position radar 221, a second temperature sensor 222 and a second spray head 223. The fireproof device 3 of the feeding port redirection roller, the fireproof device 4 of the middle redirection roller and the fireproof device 5 of the discharging port redirection roller each comprise a main frame 21, which is also provided with a first temperature sensor 211 and a first spray head 212.

[0036] More specifically, the main frame 21 is provided with at least three first temperature sensors 211. The first temperature sensors 211 form an infrared temperature sensor array for real-time monitoring of the head, middle and tail of the bearing seat of the driving roller and the surface of the belt. The material position radar 221 on the extension frame 22 is a material level monitoring sensor for detecting the material accumulation height. The second temperature sensor 222 is used for real-time monitoring of the temperature of the material accumulation prone area.

[0037] The execution treatment module is also connected with the central processing module and receives the control instructions sent by the central processing module. The execution treatment module specifically comprises the following structure:

[0038] The automatic spray cooling device is composed of an electromagnetic valve and a control pipeline and is arranged at the monitoring point corresponding to the infrared temperature sensor for automatically spraying water to cool down when the temperature exceeds the limit. In the embodiment, the first spray head 212 on the main frame 21 is provided with at least two, which correspond to the two sides of the material conveying belt 11, respectively. The second spray head 223 on the extension frame 22 corresponds to the material accumulation prone area.

[0039] Special fire extinguishing agent automatic injection device: laid in the electrical circuit slot and other areas not suitable for water fire extinguishing, used for automatic injection of electrical fire extinguishing agent when monitoring fire, such as perfluorocyclohexanone automatic fire extinguishing device, composed of liquid tank, driving gas, electromagnetic valve and spray head, when starting, the driving gas extrudes the perfluorocyclohexanone liquid and sprays it through the spray head; aerosol automatic fire extinguishing device, by igniting the aerosol generating agent in the aerosol bag, generating aerosol smoke rich in fire extinguishing particles to extinguish fire, the discharge rate is controlled by the speed reducing valve and electromagnetic valve; superfine dry powder automatic fire extinguishing device, filled with superfine dry powder fire extinguishing agent in the device, which is sprayed out by nitrogen or other driving gas, using rotary spray head, using the reaction force of spraying to make the spray head rotate, realizing large range uniform coverage.

[0040] Sensor blowing device: installed beside the sensor in heavy dust area, regularly blowing, ensuring the cleanliness of the sensor detection window, ensuring the accuracy of monitoring data, the sensor blowing device can use compressed air automatic blowing device, using air pump to generate compressed air, controlled by pipeline and electromagnetic valve, spraying and blowing the sensor probe at regular intervals or on demand, spraying compressed air to clean the detection window of the key sensor, ensuring the long-term stable operation of the system in harsh environment.

[0041] The alarm module is connected with the central processing module and receives the alarm instructions sent by the central processing module. The alarm mode includes sound alarm, light alarm and graphical signal alarm on the control room screen, and the serious alarm signal can be uploaded to the factory fire center for linkage.

[0042] Specifically, according to the judgment result of the central processing module, the system starts the hierarchical response mechanism:

[0043] Primary warning: data close to threshold or showing abnormal trend, such as mild temperature rise, accumulated material reaching warning height; display warning signal on the control room operation screen, such as yellow flashing, and give specific position and hazard type prompt, remind the operator to pay attention to observation or prepare for preventive maintenance, at this time, do not start sound and light alarm and disposal device;

[0044] Intermediate alarm and automatic disposal: data exceeds safety alarm threshold, such as temperature exceeding 75℃, accumulated material blocking, belt serious deviation; immediately trigger sound alarm and light alarm, the corresponding position on the control room screen becomes red alarm signal, and the disposal suggestion pops up, the central processing module sends opening instruction to the electromagnetic valve of the first spray head 212 or the second spray head 223 at the corresponding position, and sprays water to cool down, the spraying lasts for a preset time or until the temperature falls to the safety range; if the temperature sensor in the electrical control cabinet alarms, start perfluorocyclohexanone or aerosol automatic fire extinguishing device to accurately put out electrical fire;

[0045] High-level linkage alarm: when the temperature rises sharply, multiple sensors alarm at the same time, or the situation is not controlled after primary treatment, the system judges that it is a fire, and continues and may increase the spraying or extinguishing agent injection intensity, through the communication interface, the highest level of fire signal and location information is forced to send to the factory fire center, and the automatic start of the whole factory fire linkage plan, such as starting the regional fire pump, cutting off the upper power supply, evacuation alarm, etc.

[0046] The core of the central processing module is an industrial computer or a programmable logic controller, which is connected with the signal of the sensing and monitoring module, used for receiving, analyzing the state signal, and comparing with the preset threshold value and intelligent judgment, generating control instructions, the central processing module has algorithm program built-in, continuously receiving and analyzing the real-time data transmitted by each sensor, comparing the real-time data with the preset safety threshold value, such as temperature threshold value, material level threshold value, current fluctuation range, based on the trend analysis, pattern recognition algorithm to analyze and judge the data, identify potential hazards, such as temperature rising, temperature trend abnormality, material accumulation exceeding limit, etc., the central processing module is also connected with a database, all operation records, alarm data and sensor historical data are stored into the database, used for fault tracing and historical inquiry, all sensor data, alarm events, operation instructions and execution results in the whole working process are recorded completely by the database, generating operation log, used for after-fault tracing, optimization of maintenance period and accident analysis, after each alarm disposal is completed, whether it is a true alarm or a false alarm, its whole process data will be marked and stored into the database, through the learning of this batch of new data regularly, the system can dynamically adjust the parameters of the trend prediction model, optimize the threshold value of the expert rule base, or retrain the machine learning model, so as to continuously improve the diagnosis accuracy and reduce the false alarm.

[0047] Working process: after the system is powered on and started, each sensing and monitoring module begins to work continuously, the infrared temperature sensor array continuously scans the temperature of the driving roller, the bearing seat of the direction-changing roller, the surface of the belt, the area prone to material accumulation and the electrical control cabinet, the material accumulation radar 221 continuously detects the material accumulation height of the key positions such as the falling point and the guide chute, and the running state sensor real-time monitors the running track of the belt and the current load of the motor; all collected state signals are transmitted to the central processing module in real time, the central processing module compares the real-time data with the preset safety threshold value quickly, and the module uses the built-in advanced algorithm to analyze the data deeply; intelligently judges whether there is a risk of belt and rack friction; when the temperature of the material accumulation area presents a slow rising trend without heat source input, it may indicate that the coal powder and other materials have a tendency to self-ignite; when the data exceeds the warning value, a warning signal is sent; when the data exceeds the alarm threshold value, the alarm module is started and the execution disposal module is linked to automatically dispose; when it is judged as a serious fire, a linkage alarm signal is sent to the fire center.

[0048] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A belt conveyor fireproof intelligent monitoring and automatic disposal system, characterized in that, The application relates to a fire hazard monitoring and extinguishing system for a belt conveyor. The system comprises a sensing and monitoring module for collecting state signals of key positions of the belt conveyor; a central processing module connected with the sensing and monitoring module for receiving, analyzing and intelligently judging the state signals in comparison with preset threshold values and generating control instructions; an alarm module connected with the central processing module for receiving the control instructions and executing multi-stage alarms; and an execution and treatment module connected with the central processing module for receiving the control instructions and executing automatic treatment operations on fire hazard points. The sensing and monitoring module comprises an infrared temperature sensor array arranged at one or more key positions, such as bearing seats of driving rollers and redirection rollers, head / middle / tail positions of a belt surface, an area prone to material accumulation, an electrical circuit slot and an electrical control cabinet, for monitoring temperature data in real time. The sensing and monitoring module comprises a material level monitoring sensor, which is an ultrasonic radar or laser sensor, arranged at an area prone to material accumulation of the belt conveyor for detecting material accumulation height. The sensing and monitoring module comprises a running state sensor and a current sensor for monitoring running current of a driving motor; the running state sensor comprises a photoelectric sensor or a limit switch for monitoring belt deviation.

2. The fireproof intelligent monitoring and automatic handling system of the belt conveyor according to claim 1, characterized in that: The execution and treatment module comprises an automatic spraying and cooling device, which is composed of an electromagnetic valve and a control pipeline and is arranged at positions corresponding to monitoring points of the infrared temperature sensor array.

3. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 2, characterized in that: The execution and treatment module comprises a special fire extinguishing agent automatic spraying device arranged in the electrical circuit slot or the electrical control cabinet for automatically spraying electrical fire extinguishing agent when a fire is monitored.

4. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 3, characterized in that: The execution and treatment module further comprises a sensor purging device installed beside a sensor in a heavy dust area for regularly purging to keep a sensor detection window clean.

5. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 4, characterized in that: The central processing module is internally provided with an algorithm program for trend analysis of received state signals and is provided with multi-stage early warning and alarm threshold values; the central processing module is further connected with a database for storing historical data, operation records and alarm events for query and fault tracing.

6. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 5, characterized in that: The alarm module comprises at least one of sound alarm, light alarm and graphical alarm on a control room screen, and is further provided with an interface linked with a factory fire center for sending a linkage signal when a serious alarm occurs.

7. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 6, characterized in that: ​ 8. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 1, characterized in that: ​ 9. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 1, characterized in that: ​ 10. The fireproof intelligent monitoring and automatic handling system of a belt conveyor according to claim 1, characterized in that: The belt machine comprises a belt body (1), the belt body (1) is sequentially provided with a material inlet main roller fireproof device (2), a material inlet redirection roller fireproof device (3), at least one middle redirection roller fireproof device (4), a material outlet redirection roller fireproof device (5) and a material outlet main roller fireproof device (6) along a material conveying direction, the material inlet main roller fireproof device (2) and the material outlet main roller fireproof device (6) both comprise a main frame (21) and an extension frame (22), the main frame (21) is provided with a first temperature sensor (211) and a first spray head (212), the extension frame (22) is provided with a material position radar (221), a second temperature sensor (222) and a second spray head (223); the material inlet redirection roller fireproof device (3), the middle redirection roller fireproof device (4) and the material outlet redirection roller fireproof device (5) all comprise a main frame (21).

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