CN112190851A

CN112190851A - Fire-fighting system

Info

Publication number: CN112190851A
Application number: CN202011059843.0A
Authority: CN
Inventors: 娄越; 王劲峰; 葛秀方; 李小瓯; 李玉榛; 孙林; 曹卉; 孟一凡
Original assignee: Hefei Detefeisi Information Technology Co ltd
Current assignee: Hefei Detefeisi Information Technology Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-01-08
Also published as: WO2022068692A1

Abstract

The invention provides a fire fighting system, which comprises a power supply unit, a control unit, a fire extinguishing unit and a fire detecting unit which are mutually independent; the power supply unit is electrically connected with the control unit, the control unit is respectively in communication connection with the fire extinguishing unit and the fire detection unit, the fire extinguishing medium is stored in the fire extinguishing unit, and the control unit is further in communication connection with a manual alarm and a manual controller. The invention has the advantages that: the fire-fighting operation is realized only through the closed-loop control of the fire-fighting system, the external detection, control and fire-fighting medium generation and conveying system participation are not needed, the fire-fighting system can be popularized and used in the scene with poor conditions, fire information can be sent out through manual instructions when necessary, the fire-fighting system is controlled to extinguish fire or alarm is relieved, and therefore the flexible management and control fire-fighting system is relatively independent in all constituent units, convenient to detect and replace, capable of being distributed and arranged, and free of influence on the original space distribution.

Description

Fire-fighting system

Technical Field

The invention relates to the technical field of fire safety, in particular to a fire fighting system.

Background

There is a large amount of conflagration hidden dangers in the production life, along with the development of science and technology, more and more scenes rely on fire extinguishing system to carry out conflagration prevention and control, and current fire extinguishing system mostly relies on the sensor to detect fire information, supplies with fire-fighting medium through the pipeline, and it is higher to produce fire-fighting medium and transmission system's dependence, is unsuitable to build fire extinguishing system in narrow and small space, remote area.

For electronic equipment, rack-mounted installation becomes the mainstream of machine room design and construction, and due to the high-density characteristic of rack installation, more than ten servers and magnetic disk storage with the capacity of hundreds of TB (transport block) are often installed in one cabinet, or network communication in a whole park or even a larger area is controlled. Once a fire accident occurs in the cabinet, the damage of software and hardware systems can cause high direct economic loss, and the indirect economic loss caused by loss of precious data, service stop and communication interruption caused by the direct economic loss can not be measured; therefore, the design of the fire-fighting system is always an indispensable important link in the design of an electronic information machine room.

The utility model discloses a utility model with publication number CN203861824U discloses a fire extinguishing device, comprises a box bod, the box body lower part has the sealed appearance chamber of storing liquid fire extinguishing agent, sets up control module, fire detector, control chip and power on sealed appearance chamber's basis to detect the conflagration, sealed appearance intracavity portion's top sets up the gas generator who is connected with control module, sealed appearance intracavity portion is provided with the honeycomb duct that extends to sealed appearance chamber bottom, and the honeycomb duct tip extends to the fire extinguishing device outside and is provided with the nozzle, is provided with the sealing membrane on the nozzle. When a fire breaks out, the gas generator generates high-pressure gas to spray the fire extinguishing agent out of the flow guide pipe, and the fire extinguishing agent is sprayed out of the nozzle to extinguish the fire after the sealing film is broken. The fire extinguishing device is built into a whole based on the box body, is convenient to directly put in a specific area for extinguishing fire, but has higher difficulty in testing and maintaining and can only be integrally replaced. In addition, the fire extinguishing agent is directly stored in the sealed containing cavity in the box body, the sealed containing cavity needs to be welded with the partition plate arranged in the box body, so that the sealing effect is poor, the flow guide pipe penetrates through the partition plate to cause the problem of tightness, and liquid can overflow or volatilize in the transportation and use processes, possibly corrode and damage various electrical devices on the upper portion of the box body. The sealing film is a disposable product, the product quality cannot be detected before use, and the sealing film cannot be broken when being subjected to certain pressure, and if the sealing film cannot be broken when used, the whole device loses effectiveness. When the fire extinguishing agent is used, the fire extinguishing agent firstly breaks the sealing film and then is sprayed out of the nozzle, and fragments of the sealing film can block the nozzle. In addition, this utility model's gas generator work back, gaseous direct and the fire extinguishing agent contact will put out a fire the agent from the honeycomb duct extrusion, however when in-service use, inside gaseous meeting entering liquid fire extinguishing agent, can follow the honeycomb duct blowout before the fire extinguishing agent even to lead to the fire extinguishing agent can't be according to the state blowout of hopeing, whole fire extinguishing work is uncontrollable, can't be used for actual fire control work.

Disclosure of Invention

The invention aims to provide a fire fighting system which is characterized in that all the components are independently distributed in a working space and fire fighting media do not need to be provided from the outside.

The invention solves the technical problems through the following technical scheme: a fire fighting system comprises a power supply unit, a control unit, a fire extinguishing unit and a fire detecting unit which are mutually independent; the power supply unit is electrically connected with the control unit, the control unit is respectively in communication connection with the fire extinguishing unit and the fire detection unit, the fire extinguishing medium is stored in the fire extinguishing unit, and the control unit is further in communication connection with a manual alarm and a manual controller.

According to the invention, the detection value in a scene is acquired by the fire detection unit and is transmitted to the control unit, and when the control unit judges that a fire exists, the fire extinguishing unit is controlled to carry out fire extinguishing work, so that fire fighting operation is realized only through closed-loop control of the fire fighting system, external detection and control are not needed, and a fire fighting medium generation and conveying system is not needed to participate, so that the fire fighting system can be widely used in scenes with poor conditions; the relatively independent setting of each component unit makes things convenient for solitary detection and change, reduces fortune dimension cost, can be in the space in the setting of distributing type under the narrow and small condition in space, can not influence original spatial distribution.

Preferably, the power supply unit, the control unit, the fire extinguishing unit and the fire detecting unit are arranged in a space needing fire fighting operation independently.

Preferably, the power supply unit, the control unit, the fire extinguishing unit and the fire detecting unit are mutually independent and arranged in the case, and the case can be directly fixed in the cabinet.

Preferably, the surface of the case is provided with a through hole, and the fire detection unit fixed in the case is arranged at the position of the through hole.

Preferably, the unit of putting out a fire is including jar and the nozzle of putting out a fire, the inside liquid storage pot that is provided with of jar of putting out a fire, the storage pot internal storage has liquid perfluor hexanone, and the one end that the nozzle was kept away from to the liquid storage pot is provided with gas generator, is provided with the piston between gas generator and the liquid storage pot, gas generator and the control unit communication connection, when the control unit started the unit of putting out a fire, gas generator produced gas, and the perfluor hexanone in the liquid storage pot is extruded to gaseous promotion piston, with perfluor hexanone from nozzle atomizing blowout, be provided with the check valve that allows perfluor hexanone.

Preferably, the fire detection unit comprises at least two different types of temperature and smoke integrated detectors.

Preferably, the power supply unit comprises a switching power supply and a storage battery which are respectively electrically connected with the control unit, and the switching power supply is electrically connected with the storage battery.

Preferably, the control unit is also connected with an audible and visual alarm in a communication way.

Preferably, the surface of the case is further provided with a display control panel, the control unit is in communication connection with the display control panel, and when the fire detection unit detects a fire condition, the control unit displays alarm information through the display control panel.

Preferably, the control unit sends out a fire alarm signal based on a detection signal of the fire detection unit or a control command of the manual alarm, and executes the control command if receiving the control signal sent out by the manual controller; if the control instruction sent by the manual controller is not received, judging whether the duration time of the abnormal signal reaches the delay time or not; if the duration time of the abnormal signal does not reach the delay time, closing the fire alarm signal, continuously acquiring the detection signal of the fire detection unit, and if the delay time is reached, starting the fire extinguishing unit;

after the fire extinguishing unit is started, the control unit carries out self-checking on the fire fighting system under the condition that fire alarm is relieved, and if the signal received by the control unit is abnormal, a fault warning is sent out; and in the case of no fire, the control unit periodically performs system self-check.

The fire fighting system provided by the invention has the advantages that: the fire detection unit is used for acquiring detection values in a scene and transmitting the detection values to the control unit, and when the control unit judges that a fire exists, the control unit is used for controlling the fire extinguishing unit to carry out fire extinguishing work, so that fire fighting operation is realized only through closed-loop control of the fire fighting system, external detection, control, fire fighting medium generation and conveying system participation is not needed, the fire fighting system can be widely used in scenes with poor conditions, a manual alarm and a manual controller are further arranged, fire information can be sent out through manual instructions when necessary, or the fire fighting system is controlled to carry out fire extinguishing work or alarm relieving, so that the fire fighting system is more flexibly controlled and controlled, and testing and detection are facilitated; the relatively independent setting of each component unit makes things convenient for solitary detection and change, reduces fortune dimension cost, can be in the space in the setting of distributing type under the narrow and small condition in space, can not influence original spatial distribution. The perfluorohexanone is used as a fire-fighting medium, so that the temperature can be quickly reduced, free radicals generated by chain reaction in the combustion process are inhibited, the fire is quickly extinguished, the using amount is small, the effect is quick, the perfluorohexanone is liquid, the insulating property is good, the power can not be cut off during the fire extinguishing, and the loss caused by the shutdown of a server is avoided; the power supply unit is provided with a standby power supply, so that the whole fire extinguishing device can be normally used under the condition of accidental power failure; through set up the display control unit on quick-witted case, conveniently operate and show alarm information, through audible-visual annunciator, can effectually remind the staff to handle and keep away dangerous measure, can with the interconnection of current all kinds of fire control monitored control systems, the unified management of being convenient for.

Drawings

FIG. 1 is a schematic diagram of a perfluorohexanone-based fire suppression system provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a fire suppression unit of a perfluorohexanone-based fire suppression system provided by an embodiment of the present invention;

FIG. 3 is a functional schematic diagram of a perfluorohexanone-based fire suppression system provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fire extinguishing system based on perfluorohexanone according to a second embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below in detail and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1, the embodiment provides a fire fighting system, including power supply unit 2, the control unit 4, the unit 3 of putting out a fire and the unit 5 of detecting a fire according to the mutually independent setting of scene adaptation in the space that needs fire control operation, the extinguishing medium is stored to the unit 3 of putting out a fire, power supply unit 2 is connected with the control unit 4 electricity, the control unit 4 respectively with the unit 3 of putting out a fire and the unit 5 communication connection of detecting a fire, the control unit 4 is still communication connection has manual alarm and manual controller.

The working principle of the fire fighting system provided by the embodiment is as follows: according to the selection fire detection unit 5 of application scene adaptability and the type of unit 3 of putting out a fire, acquire the detection value in the scene through fire detection unit 5, and transmit for control unit 4, when control unit 4 judges that there is the condition of a fire, control unit 3 carries out the work of putting out a fire, thereby only realize the fire control operation through the closed-loop control of fire extinguishing system self, do not need outside detection, control and fire control medium production and conveying system participate in, can use widely under the relatively poor scene of condition, like remote communication base station, because lack the condition of supplying with the fire control medium, fire control safety becomes the intractable problem, the fire extinguishing system that this embodiment provided can be fine solution its problem of carrying out the fire control operation under unmanned on duty's condition. The embodiment is further provided with a manual alarm and a manual controller, so that fire information can be sent out through manual instructions when necessary, or the fire extinguishing system is controlled to extinguish fire or alarm is relieved, the fire extinguishing system is controlled more flexibly, and testing and detection are facilitated; the relatively independent setting of each component unit makes things convenient for solitary detection and change, reduces fortune dimension cost, can be in the space in the setting of distributing type under the narrow and small condition in space, can not influence original spatial distribution.

Although the fire fighting system provided by the embodiment can meet the fire fighting requirements under the crude conditions, the fire fighting system is not limited to special scenes, and can be used in any scenes, for example, for places such as shopping malls, office buildings and crowded places, a general water-based fire extinguisher or a dry powder fire extinguisher can be selected from the fire fighting unit 3, but the fire fighting using water and dry powder has a large using amount and needs to cover the whole space, and the fire fighting media can cause certain losses to people and property, especially for power facility scenes such as libraries, archives, museums or electric cabinets, communication base stations and the like, and the fire fighting media can cause irreparable losses.

On this basis, this embodiment preferably uses perfluorohexanone as fire-fighting medium to build extinguishing unit 3, refer to fig. 2, extinguishing unit 3 includes fire extinguishing tank 31 and nozzle 32, fire extinguishing tank 31 is inside to be provided with and to communicate with nozzle 32 for the liquid storage pot 33 of storage liquid perfluorohexanone, the one end that nozzle 32 was kept away from to liquid storage pot 33 is provided with gas generator 35, has the piston between gas generator 35 and the liquid storage pot 33, gas generator 35 and the communication connection of control unit 4. The fire detection unit 5 transmits the monitored signal to the control unit 4, when the signal of the fire detection unit 5 exceeds a preset threshold value, the control unit 4 provides a strong current for the gas generator 35, substances in the gas generator 35 generate a large amount of gas through chemical reaction at high temperature, the gas pushes the piston 34 to move to extrude liquid perfluorohexanone, and the perfluorohexanone is atomized and sprayed out from the nozzle 32, so that a fire extinguishing medium is sprayed to the environment. The nozzle 32 is provided with a one-way valve which seals the nozzle through a spring, the one-way valve is extruded to release the nozzle under the pressure action of the perfluorohexanone in the liquid storage tank 33, and when the pressure returns to normal, the spring automatically presses the one-way valve back to the initial position to seal the nozzle.

The perfluorohexanone serving as a fire-fighting medium can be rapidly cooled and inhibit free radicals generated by chain reaction in the combustion process, so that the fire is rapidly extinguished, the dosage is small, the effect is fast, the perfluorohexanone can be completely volatilized, is harmless to a human body, does not damage articles, and is suitable for being used in most scenes; besides, the perfluorohexanone is liquid, but has good insulating property, and can work without power failure when being used for extinguishing fire in a power equipment scene, so that the loss caused by the shutdown of a power system is avoided; compared with the traditional fire extinguishing medium, the perfluorohexanone can extinguish fire rapidly in a small space, and cannot influence other spaces, so that the fire condition can be controlled to be enlarged, and the influence on the space where the fire condition does not occur is reduced.

The power supply unit 2 includes switching power supply 21 and the battery 22 of being connected with the control unit 4 electricity respectively, switching power supply 21 inserts alternating current power supply, and switching power supply 21 still is connected with battery 22 electricity, and switching power supply 21 carries out step-down processing to the alternating current, supplies with the control unit 4, supports whole fire extinguishing system's work, when unexpected circumstances such as conflagration take place, if the outage circumstances takes place, can be through the timely whole system work of support of battery 22, carry out the fire control operation, guarantee that fire extinguishing system can normal operating under the special circumstances. The accumulator 22 is preferably a lead-acid battery with stable service performance, so that fire caused by accidents of the accumulator 22 is avoided.

The fire detection unit 5 selects a temperature and smoke integrated detector capable of monitoring temperature and smoke simultaneously, a temperature sensing cable (not shown) can be added according to needs by technicians in the field, so that the temperature detection range is enlarged, the control unit 4 controls the control unit 4 according to the numerical value of the fire detection unit 5, any numerical value meets the trigger condition, and the control unit 4 controls the air generator 35 to work to extinguish fire and cool. In the preferred embodiment, the temperature and smoke integrated detector with at least two different models is arranged, so that the false alarm rate can be reduced, the detection precision is improved, and the normal operation of the system is ensured.

The control unit 4 is also in communication connection with an audible and visual alarm, and the control unit 4 sends out fire alarm signals when judging that a fire occurs, wherein the fire alarm signals comprise audible and visual signals sent out by the audible and visual alarm. After sometimes a fire occurs, the control unit 4 is damaged, so that the fire extinguishing work cannot be performed, and management personnel cannot be notified timely to process the fire extinguishing work, in the preferred embodiment, the audible and visual alarm can be directly connected to the fire detection unit 5 in a communication mode, when the detection value exceeds the threshold value, the audible and visual alarm can be directly controlled to give an alarm, the control unit 4 is not required to send an instruction, and for convenience of distinguishing, the audible and visual alarm controlled by the fire detection unit 5 and the control unit respectively can be configured with alarm signals of different types.

Referring to fig. 3, the working principle of the fire fighting system provided by the embodiment is as follows: after the fire fighting system is started, the control unit 4 judges whether a fire exists or not based on a detection signal of the fire detection unit 5, when a worker finds the fire, the worker can manually send a fire signal through the manual alarm before the control unit 4 does not make a corresponding judgment, the control unit 4 sends a fire alarm signal after receiving the fire signal, and if the worker receives a control signal sent by the manual controller, the fire extinguishing unit 3 is started or the fire alarm signal is closed according to a manual control instruction; if the control instruction sent by the manual controller is not received, the control unit 4 judges whether the duration time of the abnormal signal reaches the delay time, and if the duration time of the abnormal signal judged according to the data acquired by the fire detection unit 5 does not reach the delay time, the fire alarm signal is closed, and the fire monitoring is continued; if the duration of the abnormal signal reaches the delay time, the fire extinguishing unit 3 is started to extinguish fire, and the delay time is set to 28S in the embodiment, so that the delay time can be flexibly adjusted in specific use.

If the fire alarm is not released after the fire extinguishing unit 3 extinguishes the fire, the control unit 4 continuously conducts the fire extinguishing work, sends a signal to remind people to participate in the fire extinguishing work or emergency danger avoidance, and controls the working state according to a manual instruction; if the fire alarm is released, the system self-check is started, the control unit 4 judges whether the abnormal condition exists according to the parameters of the fire detection unit 5, the fire extinguishing unit 4 and the like, for example, whether the data of the fire detection unit 5 is obviously wrong or disappears, if the abnormal condition exists, a fault alarm is sent out to remind a worker to process; in the normal working process, the control unit 4 periodically starts the system self-check, checks whether the parameters of each part are normal if the self-check time is up, and gives a warning when a fault exists.

Wherein, artifical alarm and manual control ware can be the warning button and the control button of setting at the scene, and if the staff can in time report to the police and handle through the button if discovering unusually when patrolling and examining at the scene, also can give control center with the on-the-spot condition reflection and send out alarm information and control operation by control center's managers operation, refer to fig. 1 again, control unit 4 still communication connection has thing networking transmission unit, and thing networking transmission unit can upload the data that control unit 4 obtained to comprehensive control system in real time to make things convenient for managers in time to look over the state at the scene, to complicated scene, may set up a lot of extinguishing device, through uploading data in real time, can confirm the abnormal point position fast, thereby carry out quick response. Meanwhile, the administrator can send an instruction through the integrated control system and send the instruction to the control unit 4 through the transmission unit of the internet of things, so that the control unit 4 sends an alarm signal or carries out fire fighting operation, and the alarm signal can be timely closed during false alarm. The transmission unit of the internet of things can communicate in a wired or wireless mode, such as communication modes of Ethernet, RS485, WiFi, RS232, 4G, 5G and the like.

Example two

Referring to fig. 4, the difference between this embodiment and the first embodiment is that the power supply unit 2, the control unit 4, the fire extinguishing unit 3, and the fire detecting unit 5 are independently disposed in the chassis 1, the chassis 1 can be directly fixed in the cabinet, and the chassis 1 is connected to the control system of the cabinet, a through hole is disposed on the surface of the chassis 1 to facilitate smoke and temperature detection of the fire detecting unit 5, in this embodiment, two different fire detecting units 5 are disposed in the chassis 1, and the two fire detecting units 5 are respectively in communication connection with the control unit 3. The whole fire fighting system is integrated in the case 1, so that the fire fighting system is conveniently and directly installed in a cabinet, the fire extinguishing unit 3 adopts perfluorohexanone as a fire extinguishing medium, and a plurality of fire extinguishing units 3 can be arranged in combination with the cabinet space according to the effective range of the fire extinguishing unit 3 so as to extinguish fire of the whole cabinet in case of fire; or a plurality of mutually independent fire fighting systems are arranged, and each fire fighting system independently carries out fire fighting operation so as to reduce the influence of the area without fire.

Audible-visual annunciator sets up in the front surface of quick-witted case 1, can conveniently observe. The front surface of the chassis 1 is further provided with a display control panel (not shown) in communication connection with the control unit 4, and the display control panel can display system status and fire information, issue control instructions, and define functions thereof as required. When fire exists, the fire alarm signal comprises an acousto-optic signal sent by an acousto-optic alarm and fire information displayed by a display control panel.

The fire extinguishing tank 31 is of a substantially cylindrical structure, the nozzle 32 is arranged towards the tail of the case 1, and the tail of the case 1 is provided with a through hole allowing the nozzle 32 to pass through so as to release a fire-fighting medium conveniently; the fire extinguishing tank 31 is fixed inside the case 1 through the clamp 36, and further, each component part such as the power supply unit 2, the control unit 4, the fire extinguishing unit 4, the fire detection unit 5, the audible and visual alarm, the display control panel and the like is fixed inside the case 1 through the bolt detachable, so that any part can be independently disassembled and replaced, and the maintenance is convenient.

The tail part of the case 1 is also provided with a power interface 23, and an alternating current power supply is provided for the switching power supply 21 through the power interface 23; thereby for the system power supply, conveniently regard as whole direct mount in the rack with quick-witted case 1.

The surface of the case 1 can be provided with a debugging interface, a power key and the like according to requirements. The case 1 is a 19-inch 2U case and is fixed in the cabinet in a conventional case fixing mode such as a hanging lug or a guide rail, and hanging lugs 11 are arranged at two ends of the front surface of the case 1.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A fire fighting system, characterized in that: comprises a power supply unit, a control unit, a fire extinguishing unit and a fire detecting unit which are mutually independent; the power supply unit is electrically connected with the control unit, the control unit is respectively in communication connection with the fire extinguishing unit and the fire detection unit, the fire extinguishing medium is stored in the fire extinguishing unit, and the control unit is further in communication connection with a manual alarm and a manual controller.

2. A fire fighting system as defined in claim 1, wherein: the power supply unit, the control unit, the fire extinguishing unit and the fire detecting unit are mutually independent and are arranged in a space needing fire fighting operation.

3. A fire fighting system as defined in claim 1, wherein: the power supply unit, the control unit, the fire extinguishing unit and the fire detecting unit are mutually independent and arranged in the case, and the case can be directly fixed in the cabinet.

4. A fire fighting system as defined in claim 3, wherein: the surface of the case is provided with a through hole, and the fire detection unit fixed in the case is arranged at the position of the through hole.

5. A fire fighting system as defined in any one of claims 1-3, characterized in that: the fire extinguishing unit comprises a fire extinguishing tank and a nozzle, a liquid storage tank is arranged inside the fire extinguishing tank, liquid perfluorohexanone is stored in the liquid storage tank, one end, away from the nozzle, of the liquid storage tank is provided with a gas generator, a piston is arranged between the gas generator and the liquid storage tank, the gas generator is in communication connection with a control unit, when the control unit starts the fire extinguishing unit, the gas generator generates gas, the gas pushes the piston to extrude the liquid storage tank, the perfluorohexanone is atomized and sprayed out from the nozzle, and a check valve allowing the perfluorohexanone to leave the liquid storage tank is arranged on the nozzle.

6. A fire fighting system as defined in any one of claims 1-3, characterized in that: the fire detection unit comprises at least two temperature and smoke integrated detectors with different models.

7. A fire fighting system as defined in any one of claims 1-3, characterized in that: the power supply unit comprises a switch power supply and a storage battery which are respectively electrically connected with the control unit, and the switch power supply is electrically connected with the storage battery.

8. A fire fighting system as defined in any one of claims 1-3, characterized in that: the control unit is also in communication connection with an audible and visual alarm.

9. A fire fighting system as defined in claim 3, wherein: the fire detection device is characterized in that a display control panel is further arranged on the surface of the case, the control unit is in communication connection with the display control panel, and when the fire detection unit detects fire, the control unit displays alarm information through the display control panel.

10. A fire fighting system as defined in any one of claims 1-3, characterized in that: the control unit sends out a fire alarm signal based on a detection signal of the fire detection unit or a control instruction of the manual alarm, and executes the control instruction if receiving the control signal sent out by the manual controller; if the control instruction sent by the manual controller is not received, judging whether the duration time of the abnormal signal reaches the delay time or not; if the duration time of the abnormal signal does not reach the delay time, closing the fire alarm signal, continuously acquiring the detection signal of the fire detection unit, and if the delay time is reached, starting the fire extinguishing unit;