CN111298331A - Intelligent fireproof power distribution cabinet - Google Patents
Intelligent fireproof power distribution cabinet Download PDFInfo
- Publication number
- CN111298331A CN111298331A CN201911314913.XA CN201911314913A CN111298331A CN 111298331 A CN111298331 A CN 111298331A CN 201911314913 A CN201911314913 A CN 201911314913A CN 111298331 A CN111298331 A CN 111298331A
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- module
- fire
- distribution cabinet
- power distribution
- circuit module
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- 238000009826 distribution Methods 0.000 title claims abstract description 46
- 239000000779 smoke Substances 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fire Alarms (AREA)
Abstract
The invention relates to an intelligent fireproof power distribution cabinet, which is used for preventing and alarming the fire in the power distribution cabinet and immediately extinguishing the fire. It includes single chip microcomputer control module, a weighing sensor and a temperature sensor, smoke transducer, naked light inductor, input circuit module, power module, output circuit module and fire extinguishing module, temperature sensor is used for gathering and monitors the temperature data in the switch board, smoke transducer is used for gathering and monitors the smog concentration in the switch board, naked light inductor is used for responding to whether there is naked light, and input circuit module is arrived data input respectively, when the singlechip detects the fire, put out a fire through output circuit module control fire extinguishing module immediately, realize the warning and putting out a fire of switch board fire from this.
Description
Technical Field
The invention relates to an intelligent fireproof power distribution cabinet, and belongs to the field of electricity.
Background
The power distribution cabinet is used as a main structure of a power distribution room, directly influences the power utilization safety of a power supply and distribution system and power consumers, and plays roles in monitoring, controlling, measuring, on-off protection and the like on power supply and distribution equipment in the power supply and distribution system. Along with the increase of social production and people's domestic power consumption demand, people also increase to the requirement of switch board security. And the switch board is often installed in there is the electric conductivity dust or produces the dangerous operation place of flammable explosive gas, in case the switch board is on fire, will cause the result that can't be retrieved.
The reason that the switch board was on fire generally has the electric leakage to be on fire: when leakage occurs, the leaked current flows into the ground, and when the current meets a part with high resistance, local high temperature is generated, so that nearby combustible materials are ignited, and a fire is caused. In addition, a leakage spark generated at a leakage point may also cause a fire; short circuit and fire: the resistance is suddenly reduced during short circuit, the current is suddenly increased, the instant heating value is very large and greatly exceeds the heating value of the circuit during normal operation, strong sparks and electric arcs are easily generated at a short circuit point, the insulating layer can be rapidly combusted, metal can be melted, and nearby inflammable and combustible materials are combusted to cause fire; overload ignition: when the wire is overloaded, the aging and deterioration of the insulating layer of the wire are accelerated. When the overload is serious, the temperature of the lead can be continuously increased, even the insulation of the lead can be burnt, and combustible substances near the lead can be ignited, so that a fire disaster is caused; contact resistance is too large and fire is started: on an electrical circuit through which a large current passes, if the contact resistance is too large at a certain position, great heat is generated in a local range with too large contact resistance, so that the metal is discolored or even melted, an insulating layer of a lead is burnt, and combustible substances nearby or dust, fibers and the like accumulated on the lead are burnt, thereby causing fire.
Consequently, the switch board can cause the loss because of all kinds of reasons are on fire, needs an intelligent fire prevention switch board, can report to the police immediately when switch board internal environment temperature is unusual, can self-extinguishing when the conflagration has taken place.
Disclosure of Invention
The invention aims to alarm when the temperature in the power distribution cabinet is too high, so as to prevent fire; automatic fire extinguishing when the conflagration has taken place in the switch board prevents that the conflagration from spreading to cause bigger loss.
The intelligent fireproof power distribution cabinet comprises a single-chip microcomputer control module, a temperature sensor, a smoke sensor, an open fire sensor, an input circuit module, a power supply module, an output circuit module and a fire extinguishing module.
The temperature sensor is used for collecting and monitoring temperature data in the power distribution cabinet, transmitting the temperature data to the single chip microcomputer control module through the input circuit module in real time, and immediately sending an alarm signal to an upper computer through the wireless information transmission module in the output circuit module when the single chip microcomputer detects that the temperature is higher than a normal value;
the smoke sensor is used for collecting and monitoring smoke concentration in the power distribution cabinet and transmitting data to the single chip microcomputer control module through the input circuit module;
the open fire sensor is used for sensing whether open fire exists or not and inputting data into the input circuit module;
when the singlechip detects fire, the fire extinguishing module is immediately controlled by the output circuit module to extinguish the fire;
the power module supplies power to each module of the system. The storage battery module is in a charging state under normal conditions, and when the power distribution cabinet is on fire and is powered off, the storage battery module supplies power to the system.
Furthermore, the temperature sensor and the smoke sensor output 4-20mA currents, and the output currents are converted into voltages which can be read by the singlechip control module through the input circuit module.
Further, the open fire sensor directly outputs a switching signal, and the current signal is converted into a high-low level voltage signal through the input circuit module.
Furthermore, the input circuit module comprises a current-to-voltage circuit and an amplifying circuit, and converts the input current signal into a stable voltage signal which can be read by a single chip.
Furthermore, the output circuit module comprises a relay module and a wireless information transmission module, the relay module is controlled by the single chip microcomputer, the electromagnetic valve of the fire extinguishing module is further controlled, and the single chip microcomputer can send an alarm signal to an upper computer through the wireless information transmission module.
Furthermore, the fire extinguishing module is characterized by comprising an electromagnetic valve and a fire extinguisher and is controlled by a relay module.
The invention has the advantages that: the invention has great safety significance and is easy to catch fire for the distribution box, and starts from two aspects of finding out temperature abnormity immediately before the fire happens and automatically extinguishing fire after the fire happens, thereby avoiding the fire of the distribution box or reducing the loss caused by the fire of the distribution box. And temperature sensor and smoke transducer can the environment in the real-time supervision block terminal to transmit the data of gathering to the host computer through wireless information transmission module, can in time discover that the insulating layer that the circuit insulating layer is ageing to lead to melts, the temperature rises, perhaps dust, fibre in the switch board gather the condition such as too much, avoid the emergence of conflagration from the source. In addition, the invention also comprises a storage battery module to supply power to the whole system after power failure.
Drawings
FIG. 1 is a block diagram of an intelligent fireproof power distribution cabinet according to the present invention;
fig. 2 is a schematic diagram of a data transmission process.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
The first embodiment is as follows: the following describes the present embodiment with reference to fig. 1 to 2, and the intelligent fire protection power distribution cabinet of the present embodiment includes a single chip microcomputer control module 1, a temperature sensor 2, a smoke sensor 3, an open fire sensor 4, an input circuit module 5, a power supply module 6, an output circuit module 7, and a fire extinguishing module 8; the structural block diagram is shown in fig. 1, data output by a temperature sensor 2, a smoke sensor 3 and an open fire sensor 4 are converted by an input circuit module 5, read in by a singlechip control module 1, and the read data are transmitted to an upper computer through a GSM wireless information transmission module, and the singlechip determines whether to alarm or extinguish fire according to the read data. The fire extinguishing module 8 is fixed inside the power distribution cabinet by a guide rail and a sliding block, various sensors are fixed at proper positions in the power distribution cabinet, and other modules of the system are placed outside the power distribution cabinet. A small hole is formed in the wall of the power distribution cabinet, and the sensor output circuit is connected with other modules of the system outside the power distribution cabinet through the small hole, so that the system is prevented from being influenced when a fire breaks out.
When the temperature is too high, the insulation layer of the wire may melt, which may cause a short circuit and fire. The melting temperatures of different wire insulating layers are different, such as 70 ℃ resistance of a PVC insulating layer, 90 ℃ resistance of a crosslinked polyethylene insulating layer, 180 ℃ resistance of a silicone rubber insulating layer and 260 ℃ resistance of a polytetrafluoroethylene insulating layer; therefore, a temperature sensor 2 with the maximum temperature sensing of about 260 ℃ needs to be selected; the selectable model is a pt100 temperature sensor 2, the sensor outputs 4-20mA current, the temperature sensing range is 0-300 ℃, the size is small, and the installation is convenient; the 4-20mA current output by the circuit can output 0-3.3V voltage after being converted by an input circuit so as to be read by a single chip machine.
The smoke sensor 3 can sense the concentration of dust or carbon dioxide in the power distribution cabinet. When smoke dust is generated in the power distribution cabinet but no open fire is generated, the signal output by the smoke sensor 3 changes, and meanwhile, the single chip microcomputer reads the signal and controls the fire extinguishing module 8 to extinguish fire; if a large amount of dust or fibers exist in the distribution box, the distribution box can be ignited; therefore, when the output of the smoke sensor 3 is larger than a certain threshold value due to overhigh dust concentration, the single chip microcomputer sends warning information to the upper computer through the GSM wireless information transmission module, so that workers can clean the distribution box in time, and the distribution box is prevented from being on fire due to excessive dust; the smoke sensor 3 can be selected from MQ-2 smoke sensors 3, can output 4-20mA current signals and has the advantages of small size, short response time and low price.
The open fire sensor 4 senses the open fire by sensing ultraviolet rays generated by the flame; the CF6002 open fire sensor 4 can be selected; the detector is internally provided with a singlechip, and an intelligent algorithm is adopted, so that quick alarm can be realized, the false alarm rate can be reduced, the detector adopts a relay type output mode (normally open, normally closed is optional), other equipment can be directly controlled, and the sensor adopts a high-performance inlet ultraviolet photosensitive tube, so that the detector has the advantages of high sensitivity, reliable performance, dust pollution resistance, moisture resistance, strong corrosion resistance and the like; the static current of the open fire inductor is less than 100uA, and the current is about 30mA during alarming; the current output of the open fire sensor can be input into the singlechip as the high and low levels of digital signals after being converted by the input circuit module 5, and when the singlechip detects the high level, the fire extinguishing module 8 is controlled to extinguish fire.
The input circuit module 5 comprises a current-voltage conversion circuit and a voltage amplification circuit, is a voltage-current conversion circuit consisting of an operational amplifier, a resistor, a capacitor and a diode, can convert the input current into voltage by selecting a proper resistor, and can convert the voltage into 0-3.3V by the amplification circuit so as to be read in by the singlechip; the amplifying circuit can also ensure that the input circuit has stronger load capacity.
STM32 is used as the main control chip of the single chip microcomputer control module 1. The STM32 has the advantages of high performance, low cost and low power consumption; the GPIO pin can be used as an input pin to read data transmitted by the front-stage circuit; when the signal value transmitted by the temperature sensor 2 or the smoke sensor 3 is larger than a certain threshold value, the STM32 sends an alarm signal to an upper computer through a GSM wireless information transmission module; when the smoke sensor 3 detects that the concentration of carbon dioxide and the concentration of smoke dust in the power distribution cabinet are too high, or the open fire sensor 4 detects that open fire occurs, the STM32 controls the fire extinguishing module 8 to extinguish fire through the output circuit; meanwhile, STM32 can transmit the read data into the upper computer in real time through the GSM wireless information transmission module, so as to realize the real-time monitoring of the environment in the power distribution cabinet.
The output circuit module 7 comprises a relay module controlled by a single chip microcomputer and a GSM wireless information transmission module; when fire is needed to be extinguished, the relay outputs a high level, then the electromagnetic valve of the fire extinguishing module 8 is opened, and the dry powder fire extinguisher starts to extinguish fire.
The fire extinguishing module 8 consists of an electromagnetic valve and a dry powder fire extinguisher. Because the power distribution cabinet is ignited electrically, a dry powder fire extinguisher is needed to extinguish fire; a guide rail is arranged on the cabinet body of the power distribution cabinet, a slide block is arranged at a proper position of the guide rail, and a fire-fighting spray head is arranged on the slide block; the fire extinguishing nozzle is controlled by a solenoid valve.
The following is the flow of data transmission:
as shown in fig. 2, if the outputs of the temperature sensor 2 and the smoke sensor 3 are less than the threshold, the data output by the sensors are sent to the upper computer through the single chip microcomputer by using the GSM wireless information transmission module; if the output data of the temperature sensor 2 is larger than the threshold value, the singlechip sends an alarm signal to the upper computer; if the data of the smoke sensor 3 is larger than the threshold value but the data of the temperature sensor 2 is smaller than the threshold value, an alarm signal is sent out to remind a worker to clean the power distribution cabinet; if the outputs of the temperature sensor 2 and the smoke sensor 3 are both larger than the threshold value, or the open fire sensor 4 senses open fire, the fire extinguishing module 8 is used for immediately extinguishing the fire of the power distribution cabinet and sending a fire signal to the upper computer.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are 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 claims.
Claims (6)
1. An intelligent fireproof power distribution cabinet comprises a single chip microcomputer control module (1), a temperature sensor (2), a smoke sensor (3), an open fire sensor (4), an input circuit module (5), a power supply module (6), an output circuit module (7) and a fire extinguishing module (8),
the temperature sensor (2) is used for collecting and monitoring temperature data in the power distribution cabinet, transmitting the temperature data to the single chip microcomputer control module (1) in real time through the input circuit module (5), and immediately sending an alarm signal to an upper computer through a wireless information transmission module in the output circuit module (7) when the single chip microcomputer detects that the temperature is higher than a normal value;
the smoke sensor (3) is used for collecting and monitoring smoke concentration in the power distribution cabinet, and transmitting data to the single chip microcomputer control module (1) through the input circuit module (5);
the open fire sensor (4) is used for sensing whether open fire exists or not and inputting data into the input circuit module (1);
when the singlechip detects fire, the output circuit module (7) immediately controls the fire extinguishing module (8) to extinguish the fire;
the power module (6) supplies power to each module of the system, the storage battery module is in a charging state under normal conditions, and when the power distribution cabinet is on fire to cause power failure, the storage battery module supplies power to the system.
2. The intelligent fireproof power distribution cabinet according to claim 1, wherein the temperature sensor (2) and the smoke sensor (3) output 4-20mA current, and the output current is converted into voltage which can be read by the single chip microcomputer control module (1) through the input circuit module (5).
3. The intelligent fireproof power distribution cabinet according to claim 1, wherein the open fire sensor (4) directly outputs a switching signal, and the current signal is converted into a high-low level voltage signal through the input circuit module (5).
4. The intelligent fireproof power distribution cabinet according to claim 2 or 3, wherein the input circuit module (5) comprises a current-to-voltage circuit and an amplifying circuit, and converts an input current signal into a stable voltage signal which can be read by a single chip microcomputer.
5. The intelligent fireproof power distribution cabinet according to claim 1, wherein the output circuit module (7) comprises a relay module and a wireless information transmission module, the relay module is controlled by a single chip microcomputer, so as to control the electromagnetic valve of the fire extinguishing module (8), and the single chip microcomputer can send an alarm signal to an upper computer through the wireless information transmission module.
6. The intelligent fireproof power distribution cabinet according to claim 5, wherein the fire extinguishing module (8) is characterized by comprising a solenoid valve and a fire extinguisher, and is controlled by a relay module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314913.XA CN111298331A (en) | 2019-12-19 | 2019-12-19 | Intelligent fireproof power distribution cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314913.XA CN111298331A (en) | 2019-12-19 | 2019-12-19 | Intelligent fireproof power distribution cabinet |
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| CN111298331A true CN111298331A (en) | 2020-06-19 |
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| CN201911314913.XA Pending CN111298331A (en) | 2019-12-19 | 2019-12-19 | Intelligent fireproof power distribution cabinet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037458A (en) * | 2020-07-31 | 2020-12-04 | 国网山东省电力公司诸城市供电公司 | Fire alarm system for electric power system |
| CN112985509A (en) * | 2021-03-19 | 2021-06-18 | 易秋元 | Electrical engineering fire prevention monitoring system and use method thereof |
| CN114243496A (en) * | 2021-12-30 | 2022-03-25 | 湖北襄开电力设备有限公司 | High-voltage cabinet monitoring method based on multiple parameters |
| CN115207785A (en) * | 2022-09-15 | 2022-10-18 | 四川瑞吉绿能科技有限公司 | Intelligent fireproof system and method for distribution box |
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| CN107425451A (en) * | 2017-08-07 | 2017-12-01 | 国网甘肃省电力公司经济技术研究院 | A kind of electrical engineering power distribution cabinet |
| CN109276828A (en) * | 2018-11-08 | 2019-01-29 | 国网江苏省电力有限公司南通供电分公司 | A kind of automatic fire extinguishing system and its extinguishing method based on transformation cabinet |
| CN208620179U (en) * | 2018-06-11 | 2019-03-19 | 广东成名轩照明工程有限公司 | It is a kind of can fire preventing pendent lamp |
| CN109786872A (en) * | 2019-03-18 | 2019-05-21 | 北京航空航天大学 | A kind of lithium ion battery thermal runaway early warning system and method |
| CN211912506U (en) * | 2019-12-19 | 2020-11-13 | 哈尔滨朗昇电气股份有限公司 | Intelligent fireproof power distribution cabinet |
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2019
- 2019-12-19 CN CN201911314913.XA patent/CN111298331A/en active Pending
Patent Citations (5)
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| CN107425451A (en) * | 2017-08-07 | 2017-12-01 | 国网甘肃省电力公司经济技术研究院 | A kind of electrical engineering power distribution cabinet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037458A (en) * | 2020-07-31 | 2020-12-04 | 国网山东省电力公司诸城市供电公司 | Fire alarm system for electric power system |
| CN112985509A (en) * | 2021-03-19 | 2021-06-18 | 易秋元 | Electrical engineering fire prevention monitoring system and use method thereof |
| CN114243496A (en) * | 2021-12-30 | 2022-03-25 | 湖北襄开电力设备有限公司 | High-voltage cabinet monitoring method based on multiple parameters |
| CN115207785A (en) * | 2022-09-15 | 2022-10-18 | 四川瑞吉绿能科技有限公司 | Intelligent fireproof system and method for distribution box |
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