CN114360195A - Fire prevention and extinguishing optical fiber monitoring system and method for mining belt conveyor - Google Patents
Fire prevention and extinguishing optical fiber monitoring system and method for mining belt conveyor Download PDFInfo
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Abstract
The mine belt conveyor fire prevention and extinguishing optical fiber monitoring system comprises an aboveground monitoring part and an underground monitoring part, wherein the aboveground monitoring part and the underground monitoring part realize signal exchange through a network switch, remote monitoring is realized, management difficulty is reduced, and monitoring efficiency is improved, the aboveground monitoring part comprises a ground detection server host, the underground monitoring part comprises a distributed optical fiber temperature measurement host, a first temperature sensing optical cable group connected with the distributed optical fiber temperature measurement host, a fire prevention and extinguishing control box, a detection unit and an execution unit connected with the fire prevention and extinguishing control box, the distributed optical fiber temperature measurement host is connected with the control box, the first temperature sensing optical cable group is arranged along a belt conveyor, the detection unit comprises a sensor group, the execution unit comprises a voice alarm, an electric control aqueous medium spraying unit and an electric control dry powder medium spraying unit, and a double-medium spraying unit is adopted, so that the step-by-step fire prevention and extinguishing monitoring work can be carried out according to the collocation among different detection signals, the selection diversity and the functionality of the system are increased.
Description
Technical Field
The invention relates to the technical field of fire prevention and extinguishment of roadway mechanical devices, in particular to a fire prevention and extinguishment optical fiber monitoring system and method for a mine belt conveyor.
Background
The automatic water spraying fire extinguishing system for the coal mine becomes the first technical means for fire prevention and extinguishing of coal mine belt conveyors in China from the 20 th century to the 90 th year, and is used up to now, at present, the deployment of fire prevention and extinguishing of coal mines in China is relatively lagged, infrastructure construction and intelligent development of coal mines are asynchronous, supporting equipment is not perfect enough, most of coal mine belt conveyors depend on monitoring information to carry out manual fire extinguishing, a large time difference exists from fire finding to fire extinguishing, the fire becomes more difficult to control, large dangerousness and low working efficiency exist, artificial missed detection hidden dangers are large, and the intensity required for management is high.
Chinese patent CN200710129802.2 just discloses a belt feeder monitored control system that puts out a fire, adopt surveillance camera machine in this system, temperature sensor and smoke transducer constitute detecting system, detect belt feeder operational environment, constitute the execution module by the solenoid valve, when the sensor detects that the surrounding environment is unusual, the conveyer stall, the solenoid valve is opened, the shower nozzle water spray is put out a fire to cooling down to the surrounding environment, because the device uses point type temperature sensor, it is that measured is that ambient temperature does not have direct contact with equipment under test, lead to the unable accurate timely early warning of system monitoring point condition hidden danger.
In addition, in practical application, the temperature rising frequency is high due to continuous work of the conveying belt of the conveyor equipment, and the system can only be stopped for multiple times to cool down when the temperature is too high, so that the working efficiency of the conveyor is seriously influenced; in the equipment heating process, the ambient environment is inevitably driven to heat up, the spraying system of the system only can cool down the equipment, and the ambient environment still has higher temperature, so that the heating period of the equipment is greatly shortened, the ambient high-temperature environment accelerates the heating speed of the equipment, the shutdown cooling frequency of the equipment is further improved, and the working efficiency of the conveyor is seriously reduced.
Meanwhile, the working mode of the belt conveyor fire extinguishing monitoring system is single, when open fire occurs, because the conveying belt and the rollers are made of rubber, the pure spray head is low in water spraying fire extinguishing efficiency, the conveying belt is seriously damaged, the work of accurately and quickly extinguishing the open fire cannot be achieved, and therefore the fire preventing and extinguishing monitoring work on the conveying machine cannot be completed reasonably and efficiently.
Disclosure of Invention
The invention provides an anti-fire optical fiber monitoring system and an anti-fire optical fiber monitoring method for a mining belt conveyor, aiming at solving the problems that most of the existing anti-fire monitoring systems still rely on manual inspection, specially-assigned monitoring sites, the monitoring system has few monitoring and firing index parameters, cannot realize full-coverage fire hazard point monitoring along the belt conveyor, and meanwhile, the installation of an anti-fire spraying unit is complicated, and the spraying medium and the spraying mode are single and uncontrollable.
The technical scheme of the invention is as follows:
mining belt conveyor fire prevention optical fiber monitoring system, including aboveground monitoring part and monitoring part in the pit, monitoring part in the pit is used for carrying out real-time supervision to the environment in the pit to with information transfer to aboveground monitoring part, make things convenient for people to look over, realized the remote monitoring of environment in the pit.
Further, the on-ground monitoring part includes ground detection server host computer and the first network switch who is connected with it, first network switch is connected with monitoring part in the pit, and passes through first network switch can be with monitoring signal transmission to ground detection server host computer of monitoring part in the pit, install monitored control system software on the ground detection server host computer, monitored control system software can collect the real-time data of monitoring part transmission in the pit, and according to this data, people can self-define early warning algorithm and remote transmission to monitoring part in the pit and carry out automatic control.
Further, the underground monitoring part comprises a second network switch, a temperature monitoring module and an anti-fire control module, the second network switch is connected with the first network switch and can transmit monitoring signals of the underground monitoring part to the first network switch, the temperature detection module comprises a distributed optical fiber temperature measurement host and a first temperature-sensing optical cable group connected with the distributed optical fiber temperature measurement host, the optical fiber temperature measurement host can receive a pre-warning algorithm defined by the monitoring system and control the underground monitoring part to perform anti-fire work, the first temperature-sensing optical cable group is arranged along a conveyor belt of the belt conveyor, the anti-fire control module comprises an anti-fire control box and a detection unit and an execution unit connected with the anti-fire control box, the anti-fire control box is further connected with the optical fiber temperature measurement host and is used for receiving detection signals of the detection unit and transmitting the signals to the optical fiber temperature measurement host, and then controlling an execution unit to perform fire prevention and extinguishing work according to the group definition early warning algorithm.
Furthermore, the detecting unit comprises a sensor group, the executing unit comprises a voice alarm and a spraying unit group, the spraying unit group comprises an electric control aqueous medium spraying unit and an electric control dry powder medium spraying unit, and due to the design of the double spraying units, the monitoring system can select different fire prevention and extinguishing modes according to needs, so that the selection diversity of the system is increased, and the practicability of the system is further increased.
Preferably, the fire prevention and extinguishing control modules are provided with a plurality of groups, mine tunnels are divided into a plurality of groups by taking 210m as one group, each group comprises a group of fire prevention and extinguishing control modules, the plurality of groups are divided into a plurality of subareas by taking 30-70m as one subarea, each subarea comprises a group of sensor groups and an electric control water medium spraying unit, subarea control is realized, and the fire prevention and extinguishing work can be accurately carried out by the abnormal system in any subarea.
According to the mining belt conveyor fire prevention and extinguishing optical fiber monitoring system, the temperature detection module further comprises a thermal imager, and the sensor group comprises a smoke sensor, a carbon monoxide sensor and a flame sensor which are respectively used for detecting smoke, CO and open fire in a mine roadway.
According to the mining belt conveyor fire prevention and extinguishing optical fiber monitoring system, the thermal imager and the electronic control dry powder medium spraying unit are respectively provided with two groups, one group of thermal imager and the electronic control dry powder medium spraying unit are located above the head part of the belt conveyor and used for monitoring the state of a machine head, the other group of thermal imager and the electronic control dry powder medium spraying unit are arranged along a mine roadway and used for monitoring the running state of a conveying belt of the belt conveyor, the coverage of the monitoring point on the whole equipment is really realized, and a system with any monitoring point having problems can be accurately positioned and selectively perform fire prevention and extinguishing work.
As above-mentioned mining belt conveyor fiber monitoring system that prevents putting out a fire, electrically controlled aqueous medium sprays unit includes the trunk line, it is equipped with pipeline pressure sensor to connect on the trunk line for detect the real-time water pressure in the trunk line, when making the abnormal conditions take place, have sufficient water source in the trunk line to carry out the work of preventing putting out a fire, electrically controlled aqueous medium sprays unit still includes the auxiliary line, auxiliary line and trunk line intercommunication are followed the auxiliary line is equipped with a plurality of branch road pipelines, the branch road pipeline is arranged along mine tunnel direction, is equipped with the solenoid valve on the auxiliary line between branch road pipeline and the trunk line, the solenoid valve is connected with the control box, be equipped with a plurality of shower nozzle groups on the branch road pipeline, the control box can send control signal to the solenoid valve, controls the work of shower nozzle group.
Further, be equipped with three branch road pipelines on the auxiliary line at least, two of them are located mine tunnel both sides respectively, and another branch road pipeline is located mine tunnel top, realizes the cover to the conveyer belt, when making unusual, can solve unusually in the very first time, has guaranteed that equipment can continue to move, and is a plurality of shower nozzle group arranges along the branch road pipeline, and shower nozzle group interval is 7-12m, and when the distance was too little, it is higher to branch road pipeline size and inside water pressure requirement, the difficult water source distribution that realizes different shower nozzle groups, and when the distance was too big, the centre produced the space easily, influences the efficiency of preventing and putting out a fire work.
As the main part, shower nozzle group includes fire sprinkler and water spray nozzle, water spray nozzle is used for the spraying cooling dust fall work when temperature and smoke and dust concentration are too high, the fire sprinkler can make the temperature begin to burst and spray the work of putting out a fire, has increased the maneuverability of system, makes the system can carry out different work of putting out a fire according to different temperature environment.
According to the mining belt conveyor fire prevention and extinguishing optical fiber monitoring system, the distributed optical fiber temperature measurement host is further connected with a second temperature sensing optical cable group, the second temperature sensing optical cable group is wound at the head of the belt conveyor and can monitor the temperature of the head part, and smooth operation of the belt conveyor is guaranteed.
Furthermore, still be connected with third temperature sensing optical cable group on the distributed optical fiber temperature measurement host computer, third temperature sensing optical cable group arranges along the mine tunnel, and can monitor conveyer belt operational environment temperature, can carry out the mist cooling when ambient temperature is higher, and the side has reduced the programming rate of conveyer belt, has guaranteed the effective operation of device.
As above-mentioned mining belt conveyor fire prevention optical fiber monitoring system that puts out a fire, still include first detection portion, first detection portion includes temperature detection module and carbon monoxide sensor, works as when first detection portion detects unusually, control box control start-up solenoid valve, and the spraying water shower nozzle carries out the spraying cooling.
Furthermore, monitored control system still includes second detection portion, second detection portion includes smoke transducer, and if and only if when second detection portion detects unusually, the control box does not have the response action, works as when first detection portion and second detection portion detect unusually jointly, control box control starts the solenoid valve, and the water spray nozzle that sprays cooling, dust fall to the time delay is closed.
Further, monitored control system still includes third detection portion, third detection portion includes flame sensor, works as and only works as when third detection portion detects unusually or third detection portion detects unusually with arbitrary one in first detection portion, the second detection portion, and the control box does not have the response action, works as when first detection portion, second detection portion and third detection portion detect unusually jointly, control box control starts solenoid valve and automatically controlled dry powder medium spray unit, and the fire sprinkler head is heated and bursts the automatically controlled dry powder medium spray unit of cooperation and sprays and put out a fire, and the water sprinkler head that sprays carries out the spraying and puts out a fire, cooling, dust fall to the time delay is closed, simultaneously, control box control starts the voice alarm and carries out the audio alert.
The monitoring method of the fire prevention and extinguishing optical fiber monitoring system for the mining belt conveyor comprises the following steps:
(1) the combination condition of the temperature value measured by the carbon monoxide sensor and the distributed optical fiber temperature measurement host and the temperature field value measured by the thermal imager is used as a primary condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box;
(2) the control box (3) controls the starting of the electromagnetic valve, the atomizing water spray nozzle carries out atomizing cooling at the moment, and when the gas and the temperature disappear, the control box closes the electromagnetic valve;
(3) the combined condition of the temperature value measured by the smoke sensor, the carbon monoxide sensor and the distributed optical fiber temperature measurement host and the temperature field value measured by the thermal imager is used as a secondary condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box;
(4) the control box controls the starting of the electromagnetic valve, the water spraying nozzle carries out spraying cooling at the moment, and when gas, smoke and temperature disappear, the control box delays to close the electromagnetic valve;
(5) the temperature value measured by the smoke sensor, the carbon monoxide sensor and the distributed optical fiber temperature measurement host, the combined condition of the temperature field value measured by the thermal imager and the flame sensor are used as the highest condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box;
(6) the control box controls and starts the electromagnetic valve and the electric control dry powder medium spraying unit, the fire-fighting spraying head bursts under the action of open fire and is matched with the electric control dry powder medium spraying unit to spray and extinguish fire, and when gas, smoke, temperature and open fire disappear, the control box delays to close the electromagnetic valve and the electric control dry powder medium spraying unit;
(7) after the step (6) is finished, the control box starts a voice alarm to periodically broadcast the concentration of the toxic gas in the environment in real time;
(8) and (7) after the step (7) is finished, the system enters a pending state and waits for the next trigger condition.
The invention has the beneficial effects that: (1): by means of information exchange between the first network switch of the underground monitoring system and the second network switch of the underground monitoring system, real-time online monitoring of fire hazards in the operation process of the underground belt conveyor is achieved, the problem that most mines need manual inspection and special person monitoring is solved, management difficulty is reduced, and monitoring efficiency is improved;
(2): the control box and the optical fiber distributed temperature measurement host are fully fused from the hardware angle and the software angle, compared with the method that data are fused on the well in the traditional scheme, and the mode that the data are analyzed, judged and then transmitted by a server is adopted, the requirements on network speed, reliability and dependency are lower;
(3): the grouping and partitioning mode is adopted for monitoring and fire prevention and extinguishing work, so that full coverage is realized in a real sense, and the fire risk is reduced;
(4): by adopting the double-medium spraying unit, the step-by-step fire prevention and extinguishing monitoring work can be carried out according to the collocation of different detection signals, and the selection diversity and the functionality of the system are increased;
(5): the mode that shower nozzle group adopted atomizing water shower and fire sprinkler to combine together makes when temperature and smoke and dust concentration are too high, can carry out the spray cooling dust fall, makes the conveyer belt can move under the safety ring border, has guaranteed work efficiency, and when the conflagration took place, fire sprinkler can in time carry out the spray work of putting out a fire prevention again simultaneously, need not artifically put out a fire, has improved the security, has guaranteed that the conflagration initial stage can realize the work of putting out a fire prevention, has effectively reduced the conflagration risk.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
FIG. 1 is a schematic system diagram of a monitoring system in an embodiment;
FIG. 2 is a diagram illustrating a real-time monitoring status of a ground detection server host in an embodiment;
FIG. 3 is a layout view of a downhole monitoring portion of the monitoring system of the embodiment;
FIG. 4 is a schematic view of the downhole installation of FIG. 3;
FIG. 5 is a schematic structural diagram of a system of a downhole monitoring part in an embodiment;
FIG. 6 is a schematic structural diagram of a system of an electrically controlled aqueous medium spray unit in the embodiment;
FIG. 7 is a schematic view of a top mounting structure of the head block according to the embodiment;
FIG. 8 is a schematic side view of a nozzle group according to an embodiment;
the components represented by the reference numerals in the figures are:
1. the system comprises a belt conveyor, 11, a machine head, 12, a roller, 13, a conveying belt, 2, a distributed optical fiber temperature measurement host, 21, a first temperature-sensing optical cable group, 22, a second temperature-sensing optical cable group, 23, a third temperature-sensing optical cable group, 3, a control box, 4, a voice alarm, 5, a carbon monoxide sensor, 6, a smoke sensor, 7, an electronic control dry powder medium spraying unit, 8, an electronic control aqueous medium spraying unit, 81, a main pipeline, 82, an auxiliary pipeline, 821, an electromagnetic valve, 822, a filter, 83, a branch pipeline, 84, a spray head group, 841, a fire sprinkler head, 842, a spray water spray head, 85, a clamping hoop, 86, an encircling hoop, 9, a thermal imager, 10 and a flame sensor.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
Examples
This embodiment provides mining belt conveyor fire prevention optical fiber monitoring system, see figure 1, including aboveground monitoring part and monitoring part in the pit, monitoring part is located the mine in the pit for the temperature abnormal conditions that produces among the real-time detection and the 1 operation of handling belt conveyor, aboveground monitoring part be with subaerial, its and monitoring part in the pit pass through the ethernet and be connected the communication, and monitoring information of monitoring part in the pit can transmit to aboveground monitoring part in real time, can the regional equipment operational aspect of remote monitoring transfinite, and information feedback is more timely, has realized the remote monitoring of environment in the pit, has avoided patrolling and examining the extravagant phenomenon of labour that causes because of regularly.
In this embodiment, with reference to fig. 2, the above-ground monitoring part includes a ground detection server host, the monitoring system software of the ground server host adopts a browser/server (B/S) framework, and the JavaBean technology is utilized to collect real-time data of the underground monitoring part, the system software can visually display various parameters monitored by the underground monitoring part, and can automatically download the parameters to the underground monitoring part in a customized early warning algorithm remote manner, so that the underground monitoring part can automatically process abnormal information according to monitoring, automation of detection and control is realized, manual fire extinguishing work is not needed, time difference from fire finding to fire extinguishing work execution is greatly reduced, the fire can be better controlled in the initial stage, and the system has higher safety compared with manual inspection and fire extinguishing.
Further, the ground detection server host computer adopts the first power supply of AC220V to supply power, the detection server host computer still is connected with the printer, prints in real time to the monitoring information of monitoring part in the pit, conveniently archives and the contrast of later stage data.
In this embodiment, combine fig. 3, the aboveground monitoring part still includes first network switch, the monitoring part includes second network switch and rather than the temperature monitoring module and the fire prevention control module of being connected in the pit, first network switch passes through the ethernet with second network switch, ground detection server host computer and is connected, first network switch adopts mining flame proof and intrinsically safe type direct current regulated power supply to supply power, second network switch adopts mining flame proof and intrinsically safe type direct current regulated power supply to supply power, temperature monitoring module and fire prevention control module's monitoring information can transmit to second network switch to transmit to ground detection server host computer via first network switch, accomplish the exchange transmission work of information.
In this embodiment, with reference to fig. 4, the temperature detection module includes a distributed optical fiber temperature measurement host 2 and a first temperature-sensing optical cable group 21 connected to the distributed optical fiber temperature measurement host, the belt conveyor 1 includes a machine head 11, a drum 12 is disposed on one side of the machine head, a conveyor belt 13 is connected to the drum 12, the first temperature-sensing optical cable group 21 includes two temperature-sensing optical cables, and the two temperature-sensing optical cables are respectively located on two sides of the lower portion of the conveyor belt 13 of the belt conveyor 1 and are arranged along the direction of the conveyor belt 13 for monitoring the operating temperature condition of the conveyor belt 13 in real time.
Preferably, the distributed optical fiber temperature measurement host 2 is further connected with a second temperature sensing optical cable group 22 and a third temperature sensing optical cable group 23, the second temperature sensing optical cable group 22 comprises a temperature sensing optical cable, one end of the temperature sensing optical cable is connected with the distributed optical fiber temperature measurement host 2, the other end of the temperature sensing optical cable is coiled below the machine head 11 of the belt conveyor 1 and used for monitoring the temperature environment of the machine head 11, the third temperature sensing optical cable group 23 comprises a temperature sensing optical cable, one end of the temperature sensing optical cable is connected with the distributed optical fiber temperature measurement host 2, the other end of the temperature sensing optical cable is arranged along the side wall of the mine roadway and used for detecting the working environment temperature of the belt conveyor 1, and the three temperature sensing optical cables are divided and matched with each other to detect the environment temperature, so that the detection result is more accurate, and the possibility of fire occurrence is reduced.
Further, the distributed optical fiber temperature measurement host 2 is connected with a second switch, the user-defined early warning algorithm of the server host monitoring system can be transmitted to the optical fiber temperature measurement host, and monitoring and control of the underground monitoring part are achieved through the optical fiber temperature measurement host.
In this embodiment, combine fig. 5, the control module that prevents putting out a fire includes the control box that prevents putting out a fire 3 and rather than the detecting element and the execution unit who is connected, distributed optical fiber temperature measurement host computer 2 cascades through the RS485 bus with control box 3, and distributed optical fiber temperature measurement host computer 2 is responsible for patrolling and examining a plurality of control box 3 states of preventing putting out a fire for the bus host computer in real time, and this structure has realized that control system fuses in the hardware in the pit and not fuses through server software, even if the industry looped netowrk is unusual in the pit, but control system independent operation in the pit.
Further, the detection unit comprises a sensor group, the execution unit comprises a voice alarm 4 and a spraying unit, the sensor group is used for detecting the running state and running environment information of the equipment and then is transmitted to the distributed optical fiber temperature measurement host 2 through the control box 3, the monitoring system software of the ground server host can define the early warning algorithm and remotely and automatically downloads the early warning algorithm to the distributed optical fiber temperature measurement host 2, the distributed optical fiber temperature measurement host 2 transmits the processing signal to the execution unit through the control box 3 through the signal received by the control box 3 and combining the defined early warning algorithm, and the underground monitoring part can automatically process the monitored abnormal information.
Further, the sensor group includes smoke transducer 6, carbon monoxide sensor 5 and flame sensor 10, monitors belt conveyor 1 running state jointly, the unit of spraying includes that automatically controlled aqueous medium sprays unit 8 and automatically controlled dry powder medium and sprays unit 7 for belt conveyor 1's fire prevention and extinguishing work, and the design of two units of spraying makes this monitored control system can select different fire prevention and extinguishing modes as required, has increased the selection variety of system, and then has increased the practicality of system.
It should be noted that, in the mine roadway, 400 meters is used as a group to be provided with a plurality of groups, each group is provided with a group of temperature control modules, each group is provided with eight partitions by using 50 meters as a partition, each partition comprises a smoke sensor 6, a carbon monoxide sensor 5 and a flame sensor 10, the first partition and the fifth partition are respectively provided with a voice alarm 4, certainly, the groups and the partitions are determined according to actual conditions, the number of the groups and the partitions is not limited in the embodiment, and the multi-stage partition management and control is realized by the design mode of the groups and the partitions, so that the system can accurately perform fire prevention and extinguishing work when any partition is abnormal.
Further, the temperature detection module still includes thermal imaging system 9, thermal imaging system 9 is equipped with two sets ofly, and one of them is used for the detection achievement of 1 aircraft nose 11 part of belt conveyor, and another group is used for the detection achievement of monitoring conveyer belt 13 part, temperature detection module and carbon monoxide sensor 5 constitute first monitoring portion jointly, smoke transducer 6 constitutes the second monitoring portion jointly with first monitoring portion, flame sensor 10 constitutes the third monitoring portion jointly with second monitoring portion, control box 3 can control automatically controlled aqueous medium spray unit 8 and automatically controlled dry powder medium spray unit 7 and carry out the work of putting out a fire of preventing and putting out a fire step by step according to the information of different monitoring portion transmissions, makes this system can carry out different work of putting out a fire according to the different situations, has increased the functionality of system.
In this embodiment, the electronic control dry powder medium spraying unit 7 comprises an electronic control dry powder fire extinguisher and a control valve, the control valve is connected with the control box 3, and the electronic control dry powder fire extinguisher can be controlled to work through the control valve, as an optimal option, a dry powder fire extinguisher is also arranged at the head 11 of the belt conveyor 1 and is used for extinguishing fire at the head 11, and the design of three temperature sensing optical cable groups is combined, so that the whole equipment is covered by the monitoring point in a real sense, and when any monitoring point goes wrong, the system can be accurately positioned and selectively perform fire prevention and extinguishing work.
In this embodiment, referring to fig. 6, the electrically-controlled aqueous medium spraying unit 8 includes a main pipe 81 and an auxiliary pipe 82, the main pipe 81 is a water supply pipe and is disposed along the top of a mine roadway, the auxiliary pipe 82 is arc-shaped, the arc-shaped opening is downward, of course, the auxiliary pipe 82 is matched with the top of the mine roadway in shape, the arc-shaped is taken as an example and not considered as limiting the shape of the auxiliary pipe 82, the auxiliary pipe 82 is provided with a plurality of branch pipes 82 which are all disposed perpendicular to the mine roadway, each sub-area is provided with one auxiliary pipe 82, the auxiliary pipe 82 is further connected with branch pipes 83, the branch pipes 83 are provided with three branch pipes 83, the three branch pipes 83 are all disposed along the mine roadway, two branch pipes are respectively disposed on two sides of the mine roadway and connected with two ends of the auxiliary pipe 82, the other branch pipe is disposed at the top of the mine roadway and connected with the middle of the auxiliary pipe 82, be equipped with a plurality of shower nozzle groups 84 on the branch road pipeline 83, the auxiliary pipeline 82 is close to trunk line 81 one end and is equipped with solenoid valve 821, solenoid valve 821 is connected with control box 3, can control the switching of solenoid valve 821 through control box 3, and then control shower nozzle group 84's water spray work, on the trunk line 81, still be equipped with pipeline pressure sensor for trunk line 81 hydraulic real-time supervision work has sufficient water source in the trunk line 81 when guaranteeing that the conflagration takes place.
Preferably, with reference to fig. 7 and 8, a water filter 822 is disposed on the sub-pipeline 82 between the solenoid valve 821 and the main pipeline 81 to prevent impurities from blocking the nozzle groups 84 to affect the spraying effect, the nozzle groups 84 on any of the branch pipelines 83 are uniformly distributed at an interval of 10m, the nozzle groups 84 include fire-fighting nozzles 841 and atomizing nozzles 842, the fire-fighting nozzles 841 are used for spraying in case of fire, the atomizing nozzles 842 are used for atomizing, cooling and dust-settling in case of high temperature or large smoke, so as to increase the operability of the system, so that the system can perform different fire prevention and extinguishing operations according to different temperature environments, the branch pipelines 83 at the nozzle groups 84 at the top of the mine roadway are connected with the main pipeline 81 at the top of the mine roadway through encircling hoops 86, supporting vertical steels are disposed at two sides of the mine roadway, the branch pipelines 83 at the nozzle groups 84 at two sides of the mine roadway are connected with the supporting vertical steels through hoops 85, it is ensured that the branch pipes 83 have good connection strength.
The monitoring method of the fire prevention and extinguishing optical fiber monitoring system of the mining belt conveyor in the embodiment comprises the following steps:
(1): customizing an early warning algorithm on the distributed optical fiber temperature measurement host 2, namely, the three-level condition of system operation, and transmitting the customized early warning algorithm to the optical fiber temperature measurement host;
(2): the combination condition of the temperature value measured by the carbon monoxide sensor 5 and the distributed optical fiber temperature measurement host 2 and the temperature field value measured by the thermal imager 9 is used as a primary condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box 3;
(3): the control box 3 transmits the received information to the distributed optical fiber temperature measurement host 2, and the distributed optical fiber temperature measurement host 2 transmits a control signal to the control box 3 according to the received signal and by combining a self-defined early warning algorithm;
(4): the control box 3 receives the control signal and controls to start the electric control aqueous medium spraying unit 8, and when the gas and the temperature disappear, the electric control aqueous medium spraying unit 8 is closed;
(5): the combination condition of the temperature value measured by the smoke sensor 6, the carbon monoxide sensor 5 and the distributed optical fiber temperature measurement host 2 and the temperature field value measured by the thermal imager 9 is used as a secondary condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box 3;
(6): the control box 3 transmits the received information to the distributed optical fiber temperature measurement host 2, and the distributed optical fiber temperature measurement host 2 transmits a control signal to the control box 3 according to the received signal and by combining a self-defined early warning algorithm;
(7): the control box 3 receives the control signal and controls to start the electric control aqueous medium spraying unit 8, and when the gas, the smoke and the temperature disappear, the electric control aqueous medium spraying unit 8 is closed after half an hour of delay;
(8): the combination condition of the temperature value measured by the smoke sensor 6, the carbon monoxide sensor 5 and the distributed optical fiber temperature measurement host 2, the temperature field value measured by the thermal imager 9 and the flame sensor 10 is used as the highest condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box 3;
(9): the control box 3 transmits the received information to the distributed optical fiber temperature measurement host 2, and the distributed optical fiber temperature measurement host 2 transmits a control signal to the control box 3 according to the received signal and by combining a self-defined early warning algorithm;
(10): the control box 3 receives the control signal and controls to start the electric control aqueous medium spraying unit 8 and the electric control dry powder medium spraying unit 7, and when gas, smoke, temperature and open fire disappear, the electric control aqueous medium spraying unit 8 and the electric control dry powder medium spraying unit 7 are closed after one hour of delay;
(11): after the step (10) is finished, the control box 3 starts the voice alarm 4 to periodically broadcast the concentration of the toxic gas in the environment in real time, wherein the interval time of one broadcast period is 10-30min, and 3-5 broadcast periods are broadcast in total;
(12): and (5) after the step (11) is finished, the system enters a pending state and waits for the next trigger condition.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The mine belt conveyor fire prevention and extinguishing optical fiber monitoring system is characterized by comprising an aboveground monitoring part and an underground monitoring part;
the underground monitoring system comprises an underground monitoring part, an underground monitoring part and an underground monitoring part, wherein the underground monitoring part comprises an underground monitoring server host and a first network switch connected with the underground monitoring part, and monitoring signals of the underground monitoring part can be transmitted to the ground monitoring server host through the first network switch;
the underground monitoring part comprises a second network switch, a temperature monitoring module and an anti-fire control module, wherein the temperature monitoring module and the anti-fire control module are connected with the second network switch, the second network switch is connected with the first network switch and can transmit monitoring signals of the underground monitoring part to the first network switch, the temperature detecting module comprises a distributed optical fiber temperature measuring host (2) and a first temperature sensing optical cable group (21) connected with the distributed optical fiber temperature measuring host, the first temperature sensing optical cable group (21) is arranged along a conveying belt (13) of a belt conveyor (1), and the anti-fire control module comprises an anti-fire control box (3) and a detecting unit and an executing unit which are connected with the anti-fire control box;
the distributed optical fiber temperature measurement host (2) is connected with the control box (3), the detection unit comprises a sensor group, the execution unit comprises a voice alarm (4) and a spraying unit group, and the spraying unit group comprises an electric control aqueous medium spraying unit (8) and an electric control dry powder medium spraying unit (7);
the fire prevention and extinguishing control module is provided with a plurality of groups, the mine roadway comprises a plurality of groups, each group comprises a group of fire prevention and extinguishing control modules, each group comprises a plurality of subareas, and each subarea comprises a group of sensor groups and an electric control aqueous medium spraying unit (8).
2. The mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 1, characterized in that the temperature detection module further comprises a thermal imager (9), and the sensor group comprises a smoke sensor (6), a carbon monoxide sensor (5), and a flame sensor (10).
3. The mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 2, characterized in that the electrically-controlled aqueous medium spraying unit (8) comprises a branch pipeline (83) and a plurality of nozzle groups (84) arranged thereon, wherein an electromagnetic valve (821) is arranged on the branch pipeline (83), and the electromagnetic valve (821) is connected with the control box (3).
4. The mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 3, characterized in that the branch pipes (83) comprise at least three, two of which are respectively located at two sides of a mine roadway, and the other branch pipe (83) is located at the top of the mine roadway.
5. The mining belt conveyor fire protection and suppression fiber optic monitoring system of claim 4, wherein the nozzle group (84) includes fire sprinkler heads (841) and atomized water nozzles (842).
6. The mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 5, further comprising a first detection portion, wherein the first detection portion comprises a temperature detection module and a carbon monoxide sensor (5), and when the first detection portion detects an abnormality, the control box (3) controls the starting of the electromagnetic valve (821) and the atomized water spray nozzle (842) to perform spray cooling.
7. The mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 6, further comprising a second detection portion, wherein the second detection portion comprises a smoke sensor (6), the control box (3) does not respond when the second detection portion detects abnormality, and when the first detection portion and the second detection portion detect abnormality together, the control box (3) controls to start the electromagnetic valve (821), and the atomized water spray nozzle (842) performs spray cooling and dust settling and is closed in a delayed mode.
8. The mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 7, further comprising a third detection portion, wherein the third detection portion comprises a flame sensor (10), the control box (3) has no response action if and only if the third detection portion detects an abnormality or the third detection portion detects an abnormality with any one of the first detection portion and the second detection portion, when the first detection portion, the second detection portion and the third detection portion detect an abnormality together, the control box (3) controls to start the electromagnetic valve (821) and the electronic control dry powder medium spraying unit (7), the fire sprinkler head (841) is heated and burst to cooperate with the electronic control dry powder medium spraying unit (7) to spray and extinguish fire, and the atomized water sprinkler head (842) performs spray fire extinguishing, cooling and dust settling and is closed in a delayed manner.
9. The mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 8, wherein when the first detection part, the second detection part and the third detection part detect abnormality together, the control box (3) controls the voice alarm (4) to be started for voice alarm.
10. The monitoring method of the mining belt conveyor fire prevention and extinguishing optical fiber monitoring system according to claim 5, characterized by comprising the following steps:
(1) the combination condition of the temperature value measured by the carbon monoxide sensor (5) and the distributed optical fiber temperature measurement host (2) and the temperature field value measured by the thermal imager (9) is used as a primary condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box (3);
(2) the control box (3) controls the starting of the electromagnetic valve (821), the spraying water nozzle (842) carries out spraying cooling at the moment, and when the gas and the temperature disappear, the control box (3) closes the electromagnetic valve (821);
(3) the combined condition of the temperature value measured by the smoke sensor (6), the carbon monoxide sensor (5) and the distributed optical fiber temperature measurement host (2) and the temperature field value measured by the thermal imager (9) is used as a secondary condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box (3);
(4) the control box (3) controls the starting of the electromagnetic valve (821), the spraying water nozzle (842) carries out spraying cooling at the moment, and when gas, smoke and temperature disappear, the control box (3) closes the electromagnetic valve (821) in a delayed mode;
(5) the temperature value measured by the smoke sensor (6), the carbon monoxide sensor (5) and the distributed optical fiber temperature measurement host (2), the combined condition of the temperature field value measured by the thermal imager (9) and the flame sensor (10) are used as the highest-level condition of the subarea abnormity early warning, and abnormity early warning information is transmitted to the control box (3);
(6) the control box (3) controls and starts the electromagnetic valve (821) and the electric control dry powder medium spraying unit (7), the fire-fighting spray header (841) bursts under the action of open fire and is matched with the electric control dry powder medium spraying unit (7) to spray and extinguish fire, and when gas, smoke, temperature and open fire disappear, the control box (3) delays to close the electromagnetic valve (821) and the electric control dry powder medium spraying unit (7);
(7) after the step (6) is finished, the control box (3) starts the voice alarm (4) to periodically report the concentration of the toxic gas in the environment in real time;
(8) and (7) after the step (7) is finished, the system enters a pending state and waits for the next trigger condition.
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| CN202210023633.9A CN114360195A (en) | 2022-01-10 | 2022-01-10 | Fire prevention and extinguishing optical fiber monitoring system and method for mining belt conveyor |
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| CN202210023633.9A CN114360195A (en) | 2022-01-10 | 2022-01-10 | Fire prevention and extinguishing optical fiber monitoring system and method for mining belt conveyor |
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