CN118053258A - Fire detection system - Google Patents
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- CN118053258A CN118053258A CN202410195453.8A CN202410195453A CN118053258A CN 118053258 A CN118053258 A CN 118053258A CN 202410195453 A CN202410195453 A CN 202410195453A CN 118053258 A CN118053258 A CN 118053258A
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
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Abstract
The application discloses a fire detection system. The system comprises: the gas circuit gating subsystem and pyrolysis particle monitoring subsystem, wherein, the gas circuit gating subsystem includes: the gas path gating and positioning device is connected with electrical equipment in a preset area through the gas suction pipe, and is used for collecting air in an inner cavity of the electrical equipment to obtain sampled air and conveying the sampled air to the pyrolyzed particle monitoring subsystem; and the pyrolytic particle monitoring subsystem is used for acquiring the sampling air conveyed by the gas path gating subsystem, carrying out compensation treatment on the sampling air according to the environmental data in the inner cavity of the electrical equipment to obtain the content of pyrolytic particles in the inner cavity of the electrical equipment, and determining whether the electrical equipment has a fire disaster or not according to the content of pyrolytic particles in the inner cavity of the electrical equipment. The application solves the technical problem that the related technology cannot accurately detect the electrical equipment which is likely to generate the fire before the fire occurs, thereby giving out a delay alarm to the fire.
Description
Technical Field
The application relates to the technical field of electric fire detection, in particular to a fire detection system.
Background
The very early stage of thermal runaway of the electrical equipment is shown as object heating, after any object heating exceeds the thermal collapse point, chemical reactions such as oxidative degradation, cyclization and the like can be carried out, small particles containing aromatic high molecular compounds and small molecular hydrocarbons are released, the diameters of the small particles are small and only between 2nm and 300nm, the small particles are called pyrolysis particles, are typical substances released first after the object is heated to exceed the bearing capacity of the small particles, are the smallest substance components which can exist in a free state, and the dispersed pyrolysis particles perform Brownian operation in the surrounding space of the electrical equipment and rapidly and uniformly diffuse every corner of the space.
Because the pyrolysis particles are very small, the particle size is only 2nm-300nm, the particle size of smoke is 500nm-1200nm, the particle size of dust is more than or equal to 1200nm, however, the fire smoke detector generally adopts a laser or LED light source, the particle is detected by adopting the light scattering principle, but the concentration of the particles which can be detected by the fire smoke detector is limited by the wavelength (about 650 nm) of the detection light source used by the detector, if the length of the light wave is larger than the diameter of the particle, the existence of the particles smaller than the light wave cannot be detected, so the laser type or LED type fire detector adopting the light scattering principle cannot detect the existence of the pyrolysis particles.
The electrical equipment, particularly the high-voltage power distribution equipment, has strict operation rule requirements, is totally closed and not allowed to be opened in the operation process, and further causes that other detection equipment and daily manual inspection cannot accurately and timely find fire hazards, thereby causing fire accidents. The related technology cannot accurately detect electrical equipment which is likely to generate fire at an extremely early stage before the fire occurs, so that delay alarm for the fire is caused.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a fire detection system, which at least solves the technical problem that the related technology cannot accurately detect electrical equipment which possibly generates a fire before the occurrence of the fire, so as to delay and alarm the fire.
According to an aspect of an embodiment of the present application, there is provided a fire detection system including: the gas circuit gating subsystem includes: the gas path gating and positioning device is connected with electrical equipment in a preset area through the gas suction pipe, and is used for collecting air in an inner cavity of the electrical equipment to obtain sampled air and conveying the sampled air to the pyrolyzed particle monitoring subsystem; and the pyrolytic particle monitoring subsystem is used for acquiring the sampling air conveyed by the gas path gating subsystem, carrying out compensation treatment on the sampling air according to the environmental data in the inner cavity of the electrical equipment to obtain the content of pyrolytic particles in the inner cavity of the electrical equipment, and determining whether the electrical equipment has a fire disaster or not according to the content of pyrolytic particles in the inner cavity of the electrical equipment.
Optionally, the gas path gating positioning device is connected to m x spatial positions of each of x electrical devices in the preset area through n gas suction pipes, and is configured to collect air in m x spatial positions of each electrical device, obtain n sampled air, and convey the n sampled air to the pyrolyzed particle monitoring subsystem, where x and m are positive integers, and x×m x =n.
Optionally, the pyrolyzed particle monitoring subsystem is configured to obtain n pieces of sampling air, respectively perform compensation processing on each piece of sampling air in the n pieces of sampling air, obtain the content of pyrolyzed particles in m x spatial positions of each piece of electrical equipment in the x pieces of electrical equipment, and determine whether a fire disaster occurs in the spatial positions according to the content of pyrolyzed particles in m x spatial positions of each piece of electrical equipment.
Optionally, the pyrolyzed particle monitoring subsystem includes: and the display device is used for displaying the identification information corresponding to the target space position under the condition that the content of the pyrolyzed particles in the target space position is determined to be larger than the preset threshold value, and is also used for displaying the environmental data in the inner cavity of the electrical equipment, the content of the pyrolyzed particles in the inner cavity of the electrical equipment and the running state of the electrical equipment.
Optionally, the gas circuit gating positioning device includes: air current conditioning equipment, drive feedback circuit, motor, gas circuit gating subsystem still includes: the air flow regulating device comprises n air inlets and an air outlet, wherein each air inlet of the n air inlets is connected with each air suction pipe of the n air suction pipes respectively, and the air outlet is connected with the vacuum device; the driving feedback circuit is used for receiving and responding to a first control instruction sent by the pyrolyzed particle monitoring subsystem so as to drive the motor to drive the airflow regulating device to rotate, so that the airflow regulating device rotates until the air outlet is in a parallel state with a target air inlet in the n air inlets, wherein the target air inlet is connected with a target space position through an air suction pipe; the vacuum equipment is connected with the pyrolytic particle monitoring subsystem and the target air inlet respectively and is used for receiving a second control instruction sent by the pyrolytic particle monitoring subsystem so as to extract air in the target space position.
Optionally, the gas circuit gating subsystem further comprises: and the gas treatment device is connected with the vacuum equipment and is used for receiving the gas input by the vacuum equipment, removing harmful substances of the gas input by the vacuum equipment and discharging the treated gas.
Optionally, the gas circuit gating subsystem further comprises: and the filtering device is positioned in a pipeline between the gas path gating and positioning device and the electrical equipment and is used for filtering target particles in the sampled air, wherein the target particles are particles with the particle size larger than a preset threshold value.
Optionally, the pyrolyzed particle monitoring subsystem further comprises: the device comprises a pyrolytic particle capturing device and a data processing device, wherein the pyrolytic particle capturing device is used for acquiring sampling air; the data processing device is used for carrying out compensation processing on the sampling air according to the environmental data in the inner cavity of the electrical equipment to obtain the content of pyrolysis particles in the inner cavity of the electrical equipment, and determining whether the electrical equipment is in fire disaster or not according to the content of pyrolysis particles in the inner cavity of the electrical equipment, wherein the environmental data in the inner cavity of the electrical equipment comprises at least one of the following: temperature data and humidity data.
Optionally, the pyrolyzed particle monitoring subsystem further comprises: and the alarm device is used for generating alarm information and sending the alarm information to the alarm equipment under the condition that the data processing device determines that the electrical equipment has a fire disaster.
Optionally, the pyrolyzed particle monitoring subsystem further comprises: and the communication device is used for sending the data generated by the pyrolytic particle monitoring subsystem to the cloud platform and receiving an instruction sent by the cloud platform.
In the embodiment of the application, the gas path gating subsystem comprises: the gas path gating and positioning device is connected with electrical equipment in a preset area through the gas suction pipe, and is used for collecting air in an inner cavity of the electrical equipment to obtain sampled air and conveying the sampled air to the pyrolyzed particle monitoring subsystem; the system comprises a pyrolysis particle monitoring subsystem, a gas path gating subsystem and a gas path gating subsystem, wherein the pyrolysis particle monitoring subsystem is used for acquiring sampling air conveyed by the gas path gating subsystem, carrying out compensation treatment on the sampling air according to environmental data in an inner cavity of an electric device to obtain the content of pyrolysis particles in the inner cavity of the electric device, determining whether the electric device is in fire or not according to the content of pyrolysis particles in the inner cavity of the electric device by acquiring the air in the inner cavity of the electric device and further acquiring the content of pyrolysis particles in the inner cavity of the electric device, and achieving the aim of accurately detecting the electric device which is in fire before the fire occurs, thereby realizing the technical effect of timely alarming the electric device which is in fire, and further solving the technical problem that the electric device which is in fire can not be in the very early stage before the fire occurs due to related technology, and further causing delay alarming of the fire.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
Fig. 1 is a block diagram of a fire detection system according to an embodiment of the present application;
Fig. 2 is a block diagram of another fire detection system according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to better understand the embodiments of the present application, technical terms related to the embodiments of the present application are explained as follows:
fig. 1 is a block diagram of a fire detection system according to an embodiment of the present application, as shown in fig. 1, the system including: the gas path gating subsystem and the pyrolyzed particle monitoring subsystem, wherein,
The gas circuit gating subsystem includes: the gas path gating and positioning device is connected with electrical equipment in a preset area through the gas suction pipe, and is used for collecting air in an inner cavity of the electrical equipment to obtain sampling air and conveying the sampling air to the pyrolyzed particle monitoring subsystem.
And the pyrolytic particle monitoring subsystem is used for acquiring the sampling air conveyed by the gas path gating subsystem, carrying out compensation treatment on the sampling air according to the environmental data in the inner cavity of the electrical equipment to obtain the content of pyrolytic particles in the inner cavity of the electrical equipment, and determining whether the electrical equipment has a fire disaster or not according to the content of pyrolytic particles in the inner cavity of the electrical equipment.
Preferably, the environmental data in the electrical device lumen includes, but is not limited to: temperature data and humidity data. For example, the compensation processing is performed on the sampled air according to the environmental data in the inner cavity of the electrical equipment, so as to obtain the content of pyrolysis particles in the inner cavity of the electrical equipment, which can be achieved by the following method: first, an air sample is collected, and then temperature data and humidity data are recorded. And secondly, comparing the acquired temperature data with a standard temperature (such as 25 ℃), calculating a temperature deviation, and adjusting the content of pyrolysis particles according to the temperature deviation so as to enable the measured values at different temperatures to be compared. Again, the humidity data collected is compared to a standard humidity (e.g., 50%) to calculate humidity deviation. And the content of the pyrolysis particles is adjusted according to the humidity deviation, so that the comparability of measured values under different humidities is ensured. Further calibration and correction is then required to ensure accuracy of the measurement results, based on known standard data, after temperature and humidity compensation has been performed. And finally, after compensation treatment, obtaining the relatively accurate pyrolysis particle content.
For example, determining whether an electrical device is in fire may be accomplished by: first, the pyrolyzed particle monitoring subsystem sets a threshold value of pyrolyzed particle content according to historical data and experimental study. This threshold should be based on the pyrolytic particle content of the electrical device in the event of a fire. For example, if it is found that electrical equipment is more likely to fire when the pyrolyzed particle content exceeds a certain value. Next, the detected pyrolyzed particle content is compared with a set threshold value. If the pyrolyzed particle content is above the threshold value, the electrical equipment may be considered to be at risk of fire or have a fire; if it is below the threshold value, the electrical device is considered to be currently in a safe state. Further, according to the judgment result, corresponding measures are taken. For equipment with fire risk, precautions such as power supply shutdown, personnel evacuation and the like should be immediately taken; for equipment that has a fire, a fire extinguishing sequence should be initiated and the fire department notified.
According to some optional embodiments of the present application, the air path gating and positioning device is connected to m x spatial positions of each of x electrical devices in the preset area through n air suction pipes, and is configured to collect air in m x spatial positions of each electrical device, obtain n sampled air, and send the n sampled air to the pyrolyzed particle monitoring subsystem, where x and m are positive integers, and x×m x =n. And the pyrolysis particle monitoring subsystem is used for acquiring n pieces of sampling air, respectively carrying out compensation treatment on each piece of sampling air in the n pieces of sampling air to obtain the content of pyrolysis particles in m x spatial positions of each piece of electrical equipment in the x pieces of electrical equipment, and determining whether fire disasters occur in the spatial positions according to the content of pyrolysis particles in m x spatial positions of each piece of electrical equipment.
The above-mentioned spatial positions may be the air outlet/vent/air outlet of the electrical apparatus, or may be the front, rear, left, right sides of the electrical apparatus, or may be other positions than the air outlet. The air outlet of the electrical device is an opening in the device for discharging hot air, and is usually arranged at the top or side of the device. The design of the air outlet needs to fully consider the heat dissipation requirement of the equipment and the air flowing path so as to ensure that the hot air can be effectively discharged and prevent the equipment from overheating. In the high-voltage power distribution cabinet, the air outlet is mainly used for discharging heat generated in the operation of equipment so as to ensure the normal operation of the equipment. The number and the positions of the air outlets are designed according to the heat dissipation capacity of the equipment and the ventilation requirement of a power distribution room, and the parameters such as air quantity, air speed, air flow path and the like are usually required to be calculated to determine. The air outlet of the uninterruptible power supply (Uninterruptible Power Supply, UPS) is typically located at the side or top of the device and is primarily used to remove heat generated during operation of the device. The UPS can generate certain heat in the operation process, so that an air outlet is required to be designed for heat dissipation so as to ensure the normal operation of equipment.
For example, the preset area is a data machine room, 1 electrical device is arranged in the data machine room, and the air path gating and positioning device can be connected with the air outlet of the electrical device through 1 air suction pipe under the condition that the electrical device has 1 air outlet, so as to collect air at the air outlet of the electrical device; the air channel gating and positioning device can be connected with the air outlet of the electrical equipment and the back and/or side surface where the air outlet is not located through a plurality of air suction pipes to collect air in the inner cavity of the electrical equipment. Under the condition that the electrical equipment is provided with a plurality of air outlets, the air passage gating and positioning device is connected with the plurality of air outlets of the electrical equipment one by one through a plurality of air suction pipes, and air at the plurality of air outlets of the electrical equipment is collected.
Under the condition that 1 modularized UPS is arranged in the data machine room, wherein the modularized UPS comprises 10 modules, the gas path gating and positioning device can be respectively connected with the 10 modules one by one through 10 gas suction pipes, namely, the labels of the 10 gas suction pipes are respectively: 1. 2, 3, 4, 5, 6, 7, 8, 9, 10 and 10 modules are respectively numbered as follows: A. b, C, D, E, F, G, H, I, J, suction pipe 1 is connected with module A, suction pipe 2 is connected with module B, suction pipe 3 is connected with module C, suction pipe 4 is connected with module D, suction pipe 5 is connected with module E, suction pipe 6 is connected with module F, suction pipe 7 is connected with module G, suction pipe 8 is connected with module H, suction pipe 9 is connected with module I, and suction pipe 10 is connected with module J.
In the case of x high voltage power distribution cabinets arranged in a data room, for any one high voltage power distribution cabinet, it includes, but is not limited to: and a switch cabinet: the power distribution and protection device is used for power system and comprises an incoming line cabinet, an outgoing line cabinet, a metering cabinet and the like; a transformer: for increasing or decreasing the voltage to meet the user's demand; mutual inductor: for converting high voltage or high current into low voltage or low current for measurement and protection; an arrester: the lightning protection device is used for absorbing lightning stroke energy and protecting power distribution equipment from being damaged by lightning stroke; capacitor cabinet: the reactive power compensation device is used for compensating reactive power and improving power factor; and (3) relay protection device: the power supply monitoring and protecting device is used for monitoring and protecting a power system, and can timely cut off a power supply or send an alarm signal when an abnormal situation occurs; an intelligent monitoring system: the method is used for monitoring the running state and parameters of the high-voltage power distribution cabinet and realizing remote monitoring and fault diagnosis.
For any high-voltage distribution cabinet, the gas circuit gating and positioning device can be connected with the inlet wire cabinet, the outlet wire cabinet and the relay protection device of the high-voltage distribution cabinet through a plurality of gas suction pipes so as to collect air in the inner cavities of the inlet wire cabinet, the outlet wire cabinet and the relay protection device of the high-voltage distribution cabinet, obtain a plurality of sampling air and convey the sampling air to the pyrolysis particle monitoring subsystem.
Further, the pyrolyzed particle monitoring subsystem respectively acquires n pieces of sampling air within a target duration of a preset interval; under the condition that the content of pyrolysis particles in the ith sampling air is larger than a preset threshold value, determining a sampling tube corresponding to the ith sampling air, wherein i is 1,2, … … and n; and determining the corresponding space position of the sampling tube, thereby realizing the accurate positioning of fire hidden danger.
Illustratively, the pyrolyzed particle monitoring subsystem acquires 5 samples of air every 5 minutes, within 5 seconds, respectively. For example, sample air 1 is taken within 0 to 1 second of any one of 5 seconds; sampling air 2 is obtained within 1 to 2 seconds of any one of 5 seconds; sampling air 3 is obtained within 2 to 3 seconds of any one of 5 seconds; sampling air 4 is obtained within 3 to 4 seconds of any one of 5 seconds; the sampling air 5 is taken within 4 to 5 seconds of any one of 5 seconds. Wherein the sampled air 1 is collected in the spatial position 1 through the air suction pipe 1; the sampled air 2 is collected in the spatial location 2 through the suction pipe 2; the sampled air 3 is collected in the spatial location 3 through the suction pipe 3; the sampled air 4 is collected in the spatial location 4 through the suction pipe 4; the sampled air 5 is collected in a spatial location 5 through an air suction duct 5. The spatial positions 1 to 5 may be different spatial positions of the same electrical device, or may be different spatial positions of a plurality of different electrical devices.
Further, in any one of 0 to 1 second of 5 seconds, determining whether the content of the pyrolysis particles in the sampling air 1 is greater than a preset threshold value, and determining that the fire disaster occurs in the space position 1 under the condition that the content of the pyrolysis particles in the sampling air 1 is greater than the preset threshold value; determining whether the content of pyrolytic particles in the sampling air 2 is greater than a preset threshold value within 1 to 2 seconds of any one of 5 seconds, and determining that the fire disaster occurs in the space position 2 under the condition that the content of pyrolytic particles in the sampling air 2 is greater than the preset threshold value; determining whether the content of pyrolytic particles in the sampling air 3 is greater than a preset threshold value within any one of 2 to 3 seconds of 5 seconds, and determining that the fire disaster occurs in the space position 3 under the condition that the content of pyrolytic particles in the sampling air 3 is greater than the preset threshold value; determining whether the content of pyrolytic particles in the sampling air 4 is greater than a preset threshold value within 3 to 4 seconds of any one of 5 seconds, and determining that the fire disaster occurs in the space position 4 under the condition that the content of pyrolytic particles in the sampling air 4 is greater than the preset threshold value; in any one of 4 to 5 seconds, it is determined whether the content of the pyrolysis particles in the sampling air 5 is greater than a preset threshold, and in the case that the content of the pyrolysis particles in the sampling air 5 is greater than the preset threshold, it is determined that the fire disaster occurs at the spatial location 5.
It should be noted that, after obtaining a path of sampling air each time, the pipeline is also required to be cleaned by standard gas, so as to prevent the mutual interference of the sampling air.
As some alternative embodiments of the application, the air suction pipeline can adopt transparent polyethylene hoses with the outer diameter of 8mm, and the air sampling of each isolated chamber can be realized by only installing PFM8-01 standard quick connectors on the isolating plates of each chamber of the high-voltage power distribution cabinet through opening holes and inserting the air suction pipeline into the quick connectors.
Fig. 2 is a block diagram of another fire detection system according to an embodiment of the present application, and as shown in fig. 2, the pyrolyzed particle monitoring subsystem includes: a display device, wherein,
The display device is used for displaying the identification information corresponding to the target space position under the condition that the content of the pyrolysis particles in the target space position is larger than the preset threshold value, and is also used for displaying the environmental data in the inner cavity of the electrical equipment, the content of the pyrolysis particles in the inner cavity of the electrical equipment and the running state of the electrical equipment.
It can be understood that the display device can display the content of pyrolysis particles, the temperature and humidity value, the state of electrical equipment and other information in the space position in real time, and the display device can also generate a real-time curve and has operations such as silencing, resetting, self-checking, parameter setting and the like.
In combination with the above example, it can be understood that in any of 0 to 1 second of 5 seconds, when the content of the pyrolysis particles in the sampled air 1 is greater than the preset threshold, it is determined that the fire disaster occurs in the space position 1, and the display device is used to display the identification information corresponding to the space position 1, for example, the 3 rd module in the 2# modular UPS in the 1# data room.
Further, the gas path gating and positioning device comprises: air current conditioning equipment, drive feedback circuit, motor, gas circuit gating subsystem still includes: a vacuum apparatus, wherein,
Vacuum equipment such as: a vacuum pump, wherein a vacuum pump is a device for pumping air or gas inside a container or system. The vacuum pump generates negative pressure mechanically or electrically to pump out the gas in the container to make it in air or vacuum state.
Motors such as: a stepper motor, wherein the stepper motor is a motor that converts an electrical pulse signal into a mechanical displacement. A stepper motor is a discrete motor that drives a mechanical system, typically in a fixed angle of step motion. A stepper motor is typically comprised of a stator, a rotor, and a drive circuit. The movement of the stepper motor is accomplished by applying current pulses to the stator such that the rotor rotates at a step angle. Stepper motors have many advantages such as precise position control, high torque and speed, etc.
The air flow regulating device comprises n air inlets and an air outlet, wherein each air inlet of the n air inlets is connected with each air suction pipe of the n air suction pipes respectively, and the air outlet is connected with the vacuum device; the driving feedback circuit is used for receiving and responding to a first control instruction sent by the pyrolyzed particle monitoring subsystem so as to drive the motor to drive the airflow regulating device to rotate, so that the airflow regulating device rotates until the air outlet is in a parallel state with a target air inlet in the n air inlets, wherein the target air inlet is connected with a target space position through an air suction pipe; the vacuum equipment is connected with the pyrolytic particle monitoring subsystem and the target air inlet respectively and is used for receiving a second control instruction sent by the pyrolytic particle monitoring subsystem so as to extract air in the target space position.
For example, the airflow adjustment device includes: the four air inlets are respectively connected with each air suction pipe of the 4 air suction pipes, the 4 air suction pipes are respectively butted with four space positions of the front, the rear, the left and the right of the electrical equipment, and the air outlet is connected with the vacuum air suction pump. In the working process of the system, the driving feedback circuit drives the stepping motor according to a control command sent by the pyrolyzed particle monitoring subsystem to drive the airflow adjusting equipment (the air-through rotating box) to rotate, so that the air outlets correspond to the air inlets corresponding to the space positions to be sampled one by one, the position information of the space positions to be sampled is recorded, and the position information is fed back to the pyrolyzed particle monitoring subsystem through the feedback circuit. The air ventilation rotary box is equipment for ventilation and exhaust, and discharges air in the equipment through natural wind power or a mechanical device, and meanwhile fresh air is allowed to enter, so that air circulation and indoor air quality are maintained. The air ventilation rotating box is usually designed in a round or square shape, and can rotate 360 degrees, so that the air ventilation rotating box can be automatically adjusted according to the wind direction, and the ventilation effect is improved.
Preferably, the vacuum pump may receive control instructions sent by the pyrolyzed particle monitoring subsystem to start or stop pumping.
Further, the gas circuit gating subsystem further comprises: the gas treatment device is connected with the vacuum equipment and is used for receiving the gas input by the vacuum equipment, removing harmful substances of the gas input by the vacuum equipment and discharging the treated gas.
Further, the gas circuit gating subsystem further comprises: the filtering device is positioned in a pipeline between the gas path gating and positioning device and the electrical equipment and is used for filtering target particles in the sampled air, wherein the target particles are particles with the particle size larger than a preset threshold value.
Preferably, the filtering device adopts a ZFC200-08B standard vacuum negative pressure filter which is connected in series in the suction pipeline to filter large particles such as mosquitoes or dust sucked from each chamber. The vacuum negative pressure filter is a device for filtering solid particles and liquid particles in air, and can filter the air in a vacuum state. Vacuum negative pressure filters are typically comprised of a filter body, a vacuum pump, a filter media, and a control system. Air passes through the filter body, solid particles and liquid particles are captured by the filter media, and clean air is drawn out. The vacuum pump is used to create a negative pressure environment that assists in the passage of air through the filter. The principle of vacuum negative pressure filters is to use a vacuum pump to reduce the pressure to a negative pressure state so that air can be more easily captured and cleaned as it passes through the filter media. The vacuum negative pressure filter can effectively remove solid particles and liquid particles in the air, improve the air quality and protect production equipment and product quality.
Further, the pyrolyzed particle monitoring subsystem further includes: a pyrolytic particle capture device and a data processing device, wherein,
The pyrolysis particle capturing device is used for acquiring sampling air; the data processing device is used for carrying out compensation processing on the sampling air according to the environmental data in the inner cavity of the electrical equipment to obtain the content of pyrolysis particles in the inner cavity of the electrical equipment, and determining whether the electrical equipment is in fire disaster or not according to the content of pyrolysis particles in the inner cavity of the electrical equipment, wherein the environmental data in the inner cavity of the electrical equipment comprises at least one of the following: temperature data and humidity data.
Specifically, the pyrolytic particle capturing device is further used for sending a first control instruction to drive the motor to drive the airflow regulating device to rotate, so that the airflow regulating device rotates until the air outlet is in a parallel state with a target air inlet in the n air inlets; and is also used for sending a second control instruction to start and stop the vacuum equipment. Notably, pyrolysis particle capturing device can catch pyrolysis particle, can control the rotation position of gas circuit gate positioner, confirms the pyrolysis particle of which cavity is caught now through the positional information of feedback to realize the accurate location of cavity conflagration hidden danger, can control the break-make of vacuum aspiration pump as required.
In addition, the data processing device can also process and analyze the particle information output by the pyrolytic particle capturing device, and comprehensively compensate the data by combining the temperature and humidity and other related environmental information, so that the content of pyrolytic particles in the current detection space position is calculated.
Further, the pyrolyzed particle monitoring subsystem further includes: and the alarm device is used for generating alarm information and sending the alarm information to the alarm device when the data processing device determines that the electrical device has a fire disaster.
An alarm device such as an audible and visual alarm device is a device for emitting audible and visual alarms for alerting or alerting people to the condition of an electrical device in which a fire has occurred. The alarm device can be composed of an audible alarm and a flash lamp, when a dangerous signal or an emergency is detected, the audible alarm can give out high-sounding alarm sound, and meanwhile, the flash lamp can flash to attract people.
Further, the pyrolyzed particle monitoring subsystem further includes: the communication device is used for sending data generated by the pyrolyzed particle monitoring subsystem to the cloud platform and receiving instructions sent by the cloud platform.
It can be understood that the communication system is provided with a plurality of communication interfaces such as RS485, lora, 4G, RJ network ports and the like, all data information, alarm information signals, fault alarm records and state information in the pyrolyzed particle monitoring subsystem can be transmitted to the cloud platform, and instructions of the cloud platform can be issued to the operation monitoring system, so that uploading and issuing of information and instructions are realized.
For the fire detection system shown in fig. 2, the pyrolyzed particle monitoring subsystem is taken as a core, the gas path gating subsystem is driven to be matched with the current gas path channel in turn, and the current sampled electrical equipment (or the spatial position of the electrical equipment) is determined according to the position information of the gas path channel. Air at the space position of the electrical equipment is extracted through the vacuum equipment, and the extracted air is sampled and pyrolyzed particles are detected. After data processing, the content, temperature and humidity data, equipment state and other information of the pyrolysis particles of each sampling point are displayed on a display device in real time, the spatial position (cavity) exceeding the alarm threshold is accurately positioned, an audible and visual alarm is sent, all data information is remotely transmitted to the cloud platform through a communication interface, and meanwhile, the remote operation and the local operation of the cloud platform are accepted.
In summary, the application provides a system capable of detecting the content of thermal particles in electrical equipment in real time, and the system can not delay alarm due to blocking and shielding of a cabinet shell, an equipment shell or parts, and can accurately position a chamber with fire hazard, so as to provide enough time to prevent the occurrence of fire accidents of the electrical equipment. The application has the following advantages: 1. the fire disaster detection device can detect fire disaster symptoms from the nature of combustion, capture pyrolysis particles generated by electrical equipment, accurately detect and timely early warn in the extremely early stages of overheating, smoldering, low heat radiation, electrical ignition, arc discharge and the like before a fire disaster occurs, and can not generate false alarms due to environmental influences (such as dust, temperature and humidity changes). 2. The position generating fire hidden trouble can be accurately positioned. 3. The air in the inner cavity of the electrical equipment is actively pumped and sampled, and the air does not contact any electrical accessory in the cabinet, so that the safety is high. 4. And (3) carrying out live monitoring in real time, providing a 5G internet of things communication function, sending monitoring data information to a cloud platform, and providing a mobile phone client and a cloud platform client. 5. The maintenance work is simple and easy, and no consumable material is needed to be added.
In addition, compared with the prior art, the application has the following technical effects: firstly, the monitoring of related electric fires is also concentrated in the fields of temperature measurement, residual current, combustible gas monitoring and the like, the temperature measurement is only spot temperature measurement, the temperature distribution condition of the whole space/conductor cannot be reflected, and the temperature measurement in a cabinet is very difficult due to large space limitation; residual current monitoring cannot truly reflect the actual condition of an electrical fire; the combustible gas is generally produced after combustion. However, the technology for measuring the pyrolysis particles to early warn the electric fire is based on the nature of combustion, the accurate early warn of the electric fire is generated only after exceeding the thermal breakdown point of the material, and the pyrolysis particles do Brownian motion in the air after being generated. The application is not limited by the shielding of the cabinet body and the influence of local temperature change, and can accurately early warn before the electric fire disaster occurs, and compared with the prior early warning technology, the application has the advantages of more accuracy, more sensitivity, more convenience and no limitation. Secondly, the pyrolysis particles are tiny particles generated before the smoke is generated, the particle size of the pyrolysis particles is only 2-300 nm (the particle size of the smoke is 500-1200 nm), and a common smoke detector cannot identify the pyrolysis particles. Again, the related art focuses on detecting the content of pyrolyzed particles in a limited space, and does not measure pyrolyzed particles in multiple spaces at the same time. The application not only can measure multiple spaces at the same time, but also can accurately position the space position where the electric fire disaster occurs.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the related art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (10)
1. A fire detection system, comprising: the gas path gating subsystem and the pyrolyzed particle monitoring subsystem, wherein,
The gas circuit gating subsystem includes: the gas path gating and positioning device is connected with electrical equipment in a preset area through the gas suction pipe, and is used for collecting air in an inner cavity of the electrical equipment to obtain sampling air and conveying the sampling air to the pyrolyzed particle monitoring subsystem;
The pyrolysis particle monitoring subsystem is used for acquiring the sampling air conveyed by the gas path gating subsystem, carrying out compensation treatment on the sampling air according to the environmental data in the inner cavity of the electrical equipment to obtain the content of pyrolysis particles in the inner cavity of the electrical equipment, and determining whether fire disaster occurs in the electrical equipment according to the content of pyrolysis particles in the inner cavity of the electrical equipment.
2. A fire detection system according to claim 1, wherein,
The gas path gating and positioning device is connected with m x spatial positions of each of x electrical devices in the preset area through n gas suction pipes, and is used for collecting air in m x spatial positions of each electrical device to obtain n sampled air, and conveying the n sampled air to the pyrolyzed particle monitoring subsystem, wherein x and m are positive integers, and x is m x =n.
3. A fire detection system according to claim 2, wherein,
The pyrolysis particle monitoring subsystem is used for acquiring n pieces of sampling air, respectively carrying out compensation treatment on each piece of sampling air in the n pieces of sampling air to obtain the content of pyrolysis particles in m x space positions of each piece of electrical equipment in x pieces of electrical equipment, and determining whether fire disasters occur in the space positions according to the content of pyrolysis particles in m x space positions of each piece of electrical equipment.
4. A fire detection system according to claim 3, wherein the pyrolyzed particle monitoring subsystem comprises: a display device, wherein,
The display device is used for displaying the identification information corresponding to the target space position under the condition that the content of the pyrolysis particles at the target space position is determined to be larger than a preset threshold value,
And the device is also used for displaying the environmental data in the inner cavity of the electrical equipment, the content of pyrolytic particles in the inner cavity of the electrical equipment and the running state of the electrical equipment.
5. A fire detection system according to claim 3, wherein,
The gas path gating and positioning device comprises: the air current conditioning equipment, drive feedback circuit, motor, the gas circuit gating subsystem still includes: a vacuum apparatus, wherein,
The air flow regulating device comprises n air inlets and an air outlet, wherein each air inlet of the n air inlets is respectively connected with each air suction pipe of the n air suction pipes, and the air outlet is connected with the vacuum device;
The driving feedback circuit is used for receiving and responding to a first control instruction sent by the pyrolyzed particle monitoring subsystem so as to drive the motor to drive the airflow regulating device to rotate, so that the airflow regulating device rotates until the air outlet is in a parallel state with a target air inlet in the n air inlets, wherein the target air inlet is connected with a target space position through the air suction pipe;
The vacuum equipment is respectively connected with the pyrolytic particle monitoring subsystem and the target air inlet and is used for receiving a second control instruction sent by the pyrolytic particle monitoring subsystem so as to extract air in the target space position.
6. The fire detection system of claim 5, wherein the air circuit gating subsystem further comprises:
A gas treatment device, wherein,
The gas treatment device is connected with the vacuum equipment and is used for receiving the gas input by the vacuum equipment, removing harmful substances of the gas input by the vacuum equipment and discharging the treated gas.
7. The fire detection system of claim 1, wherein the air circuit gating subsystem further comprises:
A filter device, wherein,
The filtering device is positioned in a pipeline between the gas path gating and positioning device and the electrical equipment and is used for filtering target particles in the sampled air, wherein the target particles are particles with the particle size larger than a preset threshold value.
8. The fire detection system of claim 1, wherein the pyrolyzed particle monitoring subsystem further comprises: a pyrolytic particle capture device and a data processing device, wherein,
The pyrolytic particle capturing device is used for acquiring the sampling air;
the data processing device is used for carrying out compensation processing on the sampling air according to the environmental data in the inner cavity of the electrical equipment to obtain the content of pyrolysis particles in the inner cavity of the electrical equipment, and determining whether the electrical equipment is in fire disaster or not according to the content of pyrolysis particles in the inner cavity of the electrical equipment, wherein the environmental data in the inner cavity of the electrical equipment comprises at least one of the following: temperature data and humidity data.
9. The fire detection system of claim 8, wherein the pyrolyzed particle monitoring subsystem further comprises: an alarm device, wherein,
The alarm device is used for generating alarm information and sending the alarm information to the alarm equipment under the condition that the data processing device determines that the electrical equipment is in fire.
10. The fire detection system of claim 1, wherein the pyrolyzed particle monitoring subsystem further comprises: a communication device, wherein,
The communication device is used for sending data generated by the pyrolysis particle monitoring subsystem to the cloud platform and receiving an instruction sent by the cloud platform.
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