CN110652673B - Automatic fire extinguishing system for single cabinet - Google Patents
Automatic fire extinguishing system for single cabinet Download PDFInfo
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- CN110652673B CN110652673B CN201910910380.5A CN201910910380A CN110652673B CN 110652673 B CN110652673 B CN 110652673B CN 201910910380 A CN201910910380 A CN 201910910380A CN 110652673 B CN110652673 B CN 110652673B
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- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire Alarms (AREA)
Abstract
The invention provides a single cabinet automatic fire extinguishing system, which comprises: a controller, a temperature sensor, at least one smoke sensor and a fire suppression device. When the controller determines that the concentration monitored by any one smoke sensor is abnormal, sampling the monitoring information at sampling intervals which can be divided by the calculation intervals of the controller, and judging whether to perform fire extinguishing operation or not based on the sampling results. The invention can reduce false alarm and improve the fire extinguishing accuracy.
Description
Technical Field
The invention relates to a single cabinet automatic fire extinguishing system which is used for extinguishing fires of small-medium-range equipment in fire-fighting work of a machine room.
Background
In the daily operation and maintenance process of a machine room, the condition that small-range equipment fires in the fire-fighting work of the machine room, such as internal fires of a cabinet, needs to be dealt with, the average distance between a fire-fighting probe arranged in the machine room and the cabinet is about 2m, and the small-range equipment fires which do not reach a threshold value cannot be found by a machine room fire monitoring device.
Therefore, there is a need to provide a fire extinguishing device capable of sensitively reacting in a small fire, avoiding the shutdown of air conditioning and fresh air equipment, and automatically spraying a fire extinguishing agent at a fire point for extinguishing a fire.
Disclosure of Invention
Aiming at the technical problems, the embodiment of the invention provides a single cabinet automatic fire extinguishing system which can sensitively react under a small fire condition, avoid closing air conditioning and fresh air equipment and automatically spray fire extinguishing agent at a fire point for extinguishing fire.
The invention adopts the technical scheme that:
the embodiment of the invention provides a single cabinet automatic fire extinguishing system, which comprises: the device comprises a controller, a temperature sensor, at least one smoke sensor and a fire extinguishing device, wherein the temperature sensor is arranged at a temperature sensing installation position in a cabinet and is used for monitoring the temperature in the cabinet and sending the monitored temperature information to the controller, and the temperature sensing installation position is a constant temperature or a basically constant temperature position of equipment in the cabinet in a normal running state; the smoke sensor is arranged at a smoke sensing installation position in the cabinet and is used for monitoring the smoke concentration in the cabinet and sending the monitored concentration information to the controller, and the smoke sensing installation position is a position where the smoke is easy to monitor; the fire extinguishing device is arranged at the top in the cabinet and comprises a frame fixed at the top, a fire extinguisher arranged on the frame and a pressing mechanism, wherein the pressing mechanism is used for pressing the fire extinguisher based on a spraying control instruction sent by the controller to spray the fire extinguishing agent in the fire extinguisher vertically downwards into the cabinet; the controller is configured to receive monitoring information and process the monitoring information according to a preset calculation interval, where the monitoring information includes a temperature value sent by the temperature sensor and a concentration value sent by the smoke sensor, and if a processing result at a certain calculation time indicates that an abnormality exists in the concentration value sent by any one smoke sensor, the controller enters an early warning control stage, and in the early warning control stage, the controller samples the monitoring information according to a preset sampling interval, and determines whether to send the spraying control instruction based on the sampling result, where the preset calculation interval is an integer multiple of the preset sampling interval.
Optionally, the controller determines whether to send the spray control instruction based on:
first case: if the collected monitoring information during sampling represents that all monitoring values are normal, not sending the spraying control instruction, and exiting the early warning control stage;
second case: if the monitoring information collected at the first sampling moment represents that all monitoring values or more than 80% of monitoring values are abnormal and the monitoring information is higher than the value of the calculation moment when the early warning control stage is confirmed, and the monitoring information collected at the second sampling moment represents that all monitoring values or more than 80% of monitoring values are abnormal and the monitoring information is higher than the value of the first sampling moment or the monitoring information of any one sensor cannot be collected at the second sampling moment, the spraying control instruction is sent and an alarm is given;
third case: and if any monitoring information cannot be acquired at the first sampling moment, sending the spraying control instruction and giving an alarm.
Optionally, the pressing mechanism includes motor, lead screw, travel switch and briquetting, lead screw one end with the motor shaft of motor is connected, and the other end is fixed the top of frame, the briquetting with screw connection, travel switch is used for right the briquetting is spacing, the motor is used for based on the spraying control instruction drive that the controller sent the lead screw, and then drives the briquetting moves down, when the briquetting moves down and supports travel switch, presses the handle of fire extinguisher.
Optionally, the travel switch sends a pressing signal to the controller while the pressing block abuts against the travel switch, and the controller controls the motor to rotate reversely after a preset spraying time based on the received pressing signal.
Optionally, the preset spraying time is 5s.
Optionally, when the concentration value is greater than an alarm concentration threshold value, the abnormality is indicated, and the alarm concentration threshold value is 0.65-15.5% FT.
Optionally, when the temperature value is greater than an alarm temperature threshold, the alarm temperature threshold is 55 ℃, indicating the presence of an abnormality.
Alternatively, the fire extinguisher is a conventional fire extinguisher of 20kg or less.
According to the single cabinet automatic fire extinguishing system provided by the embodiment of the invention, the temperature sensor and at least one smoke sensor are arranged in the cabinet, so that the fire condition in the cabinet can be accurately monitored in real time, and as long as any one of the smoke sensors monitors the fire condition, the fire extinguishing system enters an early warning control stage, in the early warning control stage, a controller can sample at sampling intervals which can be divided by the calculation intervals, and determine whether fire extinguishing operation is performed based on sampling results, rather than immediately performing the fire extinguishing operation once the early warning is determined, and misjudgment can be avoided and fire extinguishing accuracy can be improved.
Drawings
FIG. 1 is a schematic diagram of a single cabinet automatic fire extinguishing system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a fire extinguishing apparatus according to an embodiment of the present invention
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, an embodiment of the present invention provides a single cabinet automatic fire extinguishing system for extinguishing fires of small-scale high-value electronic devices in a cabinet, including: a controller 1, a temperature sensor 2, at least one smoke sensor 3 and a fire extinguishing device 4. The temperature sensor 2 is arranged at a temperature sensing installation position in the cabinet and is used for monitoring the temperature in the cabinet and sending the monitored temperature information to the controller 1, wherein the temperature sensing installation position is a constant temperature or a basically constant temperature position in a normal operation state of equipment in the cabinet, namely a position with little temperature change, and the basically constant temperature is the temperature obtained by measuring different positions for a plurality of times under the normal operation state of the equipment and observing the measurement result. The smoke sensor 3 is arranged at a smoke sensing installation position in the cabinet and is used for monitoring the smoke concentration in the cabinet and sending the monitored concentration information to the controller, wherein the smoke sensing installation position is a position where smoke is easy to monitor; the fire extinguishing device 4 is arranged at the top in the cabinet and comprises a frame 401 fixed at the top, a fire extinguisher 402 arranged on the frame 401 and a pressing mechanism, wherein the pressing mechanism is used for pressing the fire extinguisher based on a spraying control instruction sent by the controller to spray the fire extinguishing agent in the fire extinguisher vertically downwards into the cabinet; the controller 1 is configured to receive monitoring information and process the monitoring information according to a preset calculation interval, where the monitoring information includes a temperature value sent by the temperature sensor 2 and a concentration value sent by the smoke sensor 3, and if a processing result at a certain calculation time indicates that an abnormality exists in the concentration value sent by any one smoke sensor, the controller enters an early warning control stage, and in the early warning control stage, the controller samples the monitoring information according to a preset sampling interval and selectively sends a spraying control instruction based on the sampling result, where the preset calculation interval is an integer multiple of the preset sampling interval.
In the embodiment of the present invention, the controller 1 may be a controller having data receiving and processing capabilities, and may be disposed in a control room in communication with the temperature sensor 2, the smoke sensor 3, and the motor 403, respectively. The controller 1 stores therein an alarm concentration threshold, which may be 0.65-15.5% ft in one example, and an alarm temperature threshold, which may be 55 ℃. In one example, the controller 1 may process the received information at calculation intervals of 6s, i.e. the controller reads the smoke concentration and temperature values from the smoke sensor and the temperature sensor every 6s, compares the read concentration value and temperature value with the alarm concentration threshold and the alarm temperature threshold at each calculation time, determines whether there is an abnormality in the values based on the comparison result, and indicates that there is an abnormality in the values when the concentration value and the temperature value are greater than the alarm concentration threshold and the alarm temperature threshold, respectively, or else is normal. In the case where the calculation interval is 6s, in a preferred example, the sampling interval may be 2s. Further, if the controller 1 cannot read the values of the temperature sensor and the smoke sensor at a certain calculation time, an alarm signal is sent. If at a certain calculation time, the controller 1 determines that the concentration value monitored by any one of the plurality of smoke sensors is abnormal, the early warning control stage is started. At this stage, the controller 1 determines whether to send the spray control command based on the sampling result, specifically, the following 4 cases can be used:
first case: if the collected monitoring information during the sampling period indicates that all the monitoring values are normal, the spraying control instruction is not sent, the early warning control stage is exited, and the normal calculation time is recovered. Under the conditions that the calculation interval is 6s and the sampling interval is 2s, if the sampling is carried out after 2 seconds of the calculation time when the early warning control stage is entered, if the sampled values are recovered to be normal, namely all the monitoring values are normal, the sampling is carried out after 2 seconds, if the sampled values are still normal, the calculation time before the explanation belongs to false alarm, the early warning control is released, and the normal calculation time is recovered, namely the situation that the spraying control instruction is not sent is not alarmed.
Second case: and if the monitoring information collected at the first sampling moment represents that all monitoring values or more than 80% of monitoring values are abnormal and higher than the value of the corresponding calculation moment when the early warning control stage is determined to be entered, and the monitoring information collected at the second sampling moment represents that all monitoring values or more than 80% of monitoring values are abnormal and higher than the value of the first sampling moment, or the monitoring information of any one sensor cannot be collected at the second sampling moment, sending the spraying control instruction and giving an alarm. Under the conditions that the calculation interval is 6s and the sampling interval is 2s, if sampling is carried out after 2 seconds of the calculation time when the early warning control stage is entered, if all the sampled values or at least 80% of the values are super-threshold and higher than the value of the calculation time, then sampling is carried out after 2 seconds, if all the sampled values or at least 80% of the values are higher than the threshold and higher than the value of the previous sampling, or any one sensor cannot sample data, then the early warning is true, and then a spraying control instruction is sent, namely spraying after 4 seconds.
Further, in some cases, the on-site test results of the real environment show that, in some cases, the effective sampling interval, due to the relatively closed environment in the cabinet, the numerical variation distinction between the two samples of the smoke sensor will be small, i.e. the numerical variation distinction between the second sample and the first sample is small. Thus, in a preferred embodiment, in the second case it is determined that the condition "the monitoring information collected at the second sampling instant indicates that all the monitoring values or more than 80% of the monitoring values are abnormal and the value higher than the first sampling instant" is replaced by "the monitoring information collected at the second sampling instant indicates that all the monitoring values or more than 80% of the monitoring values are abnormal and only the monitoring values sampled by the temperature sensor are higher than the value of the first sampling instant". That is, in the second case, if the monitoring information collected at the first sampling timing indicates that all the monitoring values or more than 80% of the monitoring values are abnormal and higher than the value determined to enter the calculation timing corresponding to the early warning control stage, and the monitoring information collected at the second sampling timing indicates that all the monitoring values or more than 80% of the monitoring values are abnormal and all the values collected at the second sampling timing or the value of the collected temperature sensor is higher than the value at the first sampling timing or the monitoring information of any one of the sensors cannot be collected at the second sampling timing, the spraying control instruction is transmitted and an alarm is given.
Third case: and if any monitoring information cannot be acquired at the first sampling moment, sending the spraying control instruction and giving an alarm. Under the conditions that the calculation interval is 6s and the sampling interval is 2s, if sampling is carried out after 2 seconds of the calculation time when the early warning control stage is entered, if any one sensor cannot sample data, the situation that the site environment has influenced the sensor is indicated, a spraying control instruction is immediately sent, namely spraying is carried out after 2 seconds.
Fourth case: if other conditions than the second condition and the third condition occur during sampling, an alarm is raised but no spray control instruction is sent.
In the embodiment of the invention, the controller 1 can give an alarm by a self-contained alarm 2. In the embodiment of the present invention, the number of the temperature sensors 2 and the smoke sensors 3 may be set as required, and the present invention is not particularly limited as long as it is ensured that the fire condition can be monitored comprehensively and accurately. In one example, different numbers of smoke sensors may be provided according to the level of heat generation of the electronic devices in the cabinet, for example, more smoke sensors may be provided around the electronic devices with higher heat generation, for example, 3 to 5 smoke sensors may be provided around the electronic devices with lower heat generation, for example, 1 smoke sensor may be provided around the electronic devices with lower heat generation.
In the embodiment of the present invention, the frame 401 of the fire extinguishing device 4 may be fixed on the top of the cabinet by bolts, a base for placing the fire extinguisher 402 is formed, and the frame 401 may be made of an aluminum alloy material. The fire extinguisher 402 is fixed on the base of the frame 401, and can be a conventional fire extinguisher with the weight of less than 20kg which is sold in the market, and the conventional fire extinguisher such as carbon dioxide, dry powder and the like is used as fire extinguishing agent consumable. The pressing mechanism can be arranged at the side part of the frame 401 and comprises a motor 403, a travel switch 404, a screw rod 405 and a pressing block 406 which are arranged on the frame, the motor 403 can be fixed at the side part of the frame 401 through a connecting seat, one end of the screw rod 405 is connected with a motor shaft of the motor 403, the other end of the screw rod is fixed at the top end of the frame 401, one end of the pressing block 406 is connected with a nut of the screw rod 404, the other end of the pressing block is connected with a sliding block through a connecting rod, the sliding block is slidably arranged on a sliding rail between the top end of the frame and the connecting seat, the travel switch 404 is arranged on the connecting seat and is basically flush with the position of a lower handle of the fire extinguisher, the pressing block 406 is limited, the motor 403 is used for driving the screw rod based on a spraying control instruction sent by a controller, and then the pressing block is driven to move downwards, and when the pressing block 406 moves downwards to abut against the travel switch. Specifically, the pressing block 406 moves downwards under the drive of the screw rod 405, then presses the upper handle of the fire extinguisher downwards until the upper handle of the fire extinguisher contacts with the lower handle, and presses the handle, at this time, since the positions of the forming switch 405 and the lower handle are basically level, the pressing block 406 can prop against the travel switch 405, and cannot move downwards continuously, so that the handle of the fire extinguisher is always pressed. Meanwhile, when the pressing block 406 abuts against the travel switch 405, the travel switch 404 sends a pressing signal to the controller 1, the controller 1 controls the click 403 to rotate reversely after a preset spraying time based on the received pressing signal, specifically, when the pressing signal is received, the controller controls the motor 403 to continue driving, and after the pressing block 406 continuously presses the handle of the fire extinguisher for the preset spraying time, the motor 403 is controlled to rotate reversely, so that the pressing block 406 is driven to move upwards to finish the spraying action of the fire extinguisher. In one example, the preset spraying time may be 5s, i.e., the controller 1 delays 5s to control the motor to reverse after the press block 406 completely presses the handle of the fire extinguisher, so that the fire extinguishing agent in the fire extinguisher can be sprayed into the cabinet entirely, so that the fire can be completely extinguished, and the dead ash is prevented from being re-burned. In the embodiment of the present invention, the motor 403 may be a direct current motor, and the generated driving force can make the pressing force of the pressing block 406 be greater than the opening pressure of the fire extinguisher, so that the fire extinguishing agent of the fire extinguisher can be sprayed into the cabinet completely within the spraying time.
In summary, in the single cabinet automatic fire extinguishing system provided by the embodiment of the invention, the temperature sensor and at least one smoke sensor are arranged in the cabinet, so that the fire condition in the cabinet can be accurately monitored in real time, and as long as any one of the smoke sensors monitors the fire condition, the fire extinguishing system enters an early warning control stage, and in the early warning control stage, a controller can sample at sampling intervals which can be divided by the calculation intervals, and determine whether fire extinguishing operation is performed based on sampling results, rather than immediately performing the fire extinguishing operation once early warning is determined, so that misjudgment can be avoided and fire extinguishing accuracy can be improved. Moreover, the fire extinguisher that uses is the common fire extinguisher below 20kg, can place at the top in the rack, and this fire extinguisher uses common fire extinguisher such as carbon dioxide, dry powder as fire extinguishing agent consumptive material, and is with low costs and convenient change.
The above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be 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 (3)
1. A single cabinet automatic fire suppression system comprising: a controller, a temperature sensor, at least one smoke sensor and a fire extinguishing device,
the temperature sensor is arranged at a temperature sensing installation position in the cabinet and is used for monitoring the temperature in the cabinet and sending the monitored temperature information to the controller, and the temperature sensing installation position is a constant temperature or a basically constant temperature position of equipment in the cabinet in a normal running state;
the smoke sensor is arranged at a smoke sensing installation position in the cabinet and is used for monitoring the smoke concentration in the cabinet and sending the monitored concentration information to the controller, and the smoke sensing installation position is a position where the smoke is easy to monitor;
the fire extinguishing device is arranged at the top in the cabinet and comprises a frame fixed at the top, a fire extinguisher arranged on the frame and a pressing mechanism, wherein the pressing mechanism is used for pressing the fire extinguisher based on a spraying control instruction sent by the controller to spray the fire extinguishing agent in the fire extinguisher vertically downwards into the cabinet;
the controller is configured to receive monitoring information and process the monitoring information according to a preset calculation interval, where the monitoring information includes a temperature value sent by the temperature sensor and a concentration value sent by the smoke sensor, and if a processing result at a certain calculation time indicates that an abnormality exists in the concentration value sent by any one smoke sensor, the controller enters an early warning control stage, and in the early warning control stage, the controller samples the monitoring information according to a preset sampling interval, and determines whether to send the spraying control instruction based on the sampling result, where the preset calculation interval is an integer multiple of the preset sampling interval;
the controller determines whether to send the spray control instruction based on:
first case: if the collected monitoring information during sampling represents that all monitoring values are normal, not sending the spraying control instruction, and exiting the early warning control stage;
second case: if the monitoring information collected at the first sampling moment represents that all monitoring values or more than 80% of monitoring values are abnormal and the monitoring information is higher than the value of the calculation moment when the early warning control stage is confirmed, and the monitoring information collected at the second sampling moment represents that all monitoring values or more than 80% of monitoring values are abnormal and the monitoring value sampled by the temperature sensor is higher than the value of the first sampling moment only or the monitoring information of any one sensor cannot be collected at the second sampling moment, the spraying control instruction is sent and an alarm is given;
third case: if any monitoring information cannot be acquired at the first sampling moment, sending the spraying control instruction and giving an alarm;
the pressing mechanism comprises a motor, a screw rod, a travel switch and a pressing block, one end of the screw rod is connected with a motor shaft of the motor, the other end of the screw rod is fixed at the top of the frame, the pressing block is connected with the screw rod, the travel switch is used for limiting the pressing block, the motor is used for driving the screw rod based on a spraying control instruction sent by the controller, and then the pressing block is driven to move downwards, and when the pressing block moves downwards to prop against the travel switch, a handle of the fire extinguisher is pressed;
when the pressing block abuts against the travel switch, the travel switch sends a pressing signal to the controller, and the controller controls the motor to rotate reversely after the spraying time is preset based on the received pressing signal; the preset spraying time is 5s;
the fire extinguisher is a conventional fire extinguisher below 20 kg;
when the concentration value is larger than the alarm concentration threshold value, an abnormality is indicated;
and when the temperature value is larger than the alarm temperature threshold value, indicating that an abnormality exists.
2. The single cabinet automatic fire suppression system according to claim 1, wherein the alarm concentration threshold is 0.65-15.5% ft.
3. The single cabinet automatic fire suppression system according to claim 1, wherein the alarm temperature threshold is 55 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910910380.5A CN110652673B (en) | 2019-09-25 | 2019-09-25 | Automatic fire extinguishing system for single cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910910380.5A CN110652673B (en) | 2019-09-25 | 2019-09-25 | Automatic fire extinguishing system for single cabinet |
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| CN110652673A CN110652673A (en) | 2020-01-07 |
| CN110652673B true CN110652673B (en) | 2023-08-01 |
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| CN201910910380.5A Active CN110652673B (en) | 2019-09-25 | 2019-09-25 | Automatic fire extinguishing system for single cabinet |
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| CN113769303A (en) * | 2021-09-23 | 2021-12-10 | 北京中环博达环保科技有限公司 | Intelligence environmental protection water base type fire extinguisher |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005251826A (en) * | 2004-03-02 | 2005-09-15 | Hitachi Ltd | Stationary induction unit |
| CN106972353A (en) * | 2017-04-25 | 2017-07-21 | 合肥天盛自动化控制技术有限公司 | A kind of intelligent fire-proofing electric-control cabinet |
| CN206964920U (en) * | 2017-06-10 | 2018-02-06 | 人民电器集团上海有限公司 | A kind of automatic fire extinguisher for box-type substation |
| CN108785909A (en) * | 2018-04-18 | 2018-11-13 | 国网天津市电力公司电力科学研究院 | A kind of cable duct fireproof monitoring device |
| CN109269671B (en) * | 2018-09-18 | 2020-08-21 | 安徽宝龙电器有限公司 | Application method suitable for high-density temperature acquisition and processing system |
| 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 |
| CN109410505A (en) * | 2018-12-17 | 2019-03-01 | 观为监测技术无锡股份有限公司 | A kind of fire alarm prompt prevention fire extinguishing system |
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