CN111035879B - Double-medium high-pressure water mist fire extinguishing system and fire extinguishing method thereof - Google Patents
Double-medium high-pressure water mist fire extinguishing system and fire extinguishing method thereof Download PDFInfo
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- CN111035879B CN111035879B CN201911297710.4A CN201911297710A CN111035879B CN 111035879 B CN111035879 B CN 111035879B CN 201911297710 A CN201911297710 A CN 201911297710A CN 111035879 B CN111035879 B CN 111035879B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
Abstract
The invention discloses a double-medium high-pressure fine water mist fire extinguishing system which comprises a control center, a main fire fighting pipe and a plurality of fire fighting branch pipes connected with the main fire fighting pipe, wherein the control center is connected with the main fire fighting pipe; a water supply system of a high-pressure water mist pump set and a foam adding system are sequentially arranged on the main fire fighting pipe; the fire branch pipes are connected to each subarea needing fire extinguishing, and provide fire-fighting water supply for the subarea fire-fighting equipment; each subarea is also provided with a fire detector; a branch control system for controlling the on-off of the fire branch pipe is arranged on the fire branch pipe; the control center is respectively connected with a water supply system of a high-pressure water mist pump set of the main fire fighting pipe, a foam adding system, branch control systems on all the fire fighting branch pipes and a fire detector through cables; and the control center acquires a detection signal of the fire detector and respectively controls the water supply system of the high-pressure water mist pump set, the foam adding system and the branch control system to work.
Description
Technical Field
The invention relates to a double-medium high-pressure water mist fire extinguishing system and a fire extinguishing method of the double-medium high-pressure water mist fire extinguishing system, and belongs to the technical field of fire fighting equipment.
Background
At present, a high-pressure water mist fire extinguishing system adopts pure water as a fire extinguishing medium, the fire extinguishing mechanism mainly comprises suffocation, cooling and oxygen isolation, and the high-pressure water mist fire extinguishing system is widely applied to various fields. The fire disaster water-saving device has the advantages of low water consumption, temperature reduction and dust fall, capability of providing escape passages for people, low secondary loss of fire disasters and the like. However, the traditional high-pressure water mist pure water fire extinguishing system cannot meet the requirement of areas requiring rapid fire extinguishing. The existing foam fire extinguishing system has the advantage of quick fire extinguishing, but has the defects of large secondary loss of fire and environmental pollution.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the technical problem of providing a double-medium high-pressure water mist fire extinguishing system which can automatically start foam addition fire extinguishing or pure water fire extinguishing according to different regional fire types and meet the requirements of different conditions.
The technical problem to be solved by the invention is to provide a fire extinguishing method of the double-medium high-pressure water mist fire extinguishing system.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a double-medium high-pressure water mist fire extinguishing system comprises a control center, a main fire fighting pipe and a plurality of fire fighting branch pipes connected with the main fire fighting pipe; a water supply system of a high-pressure water mist pump set and a foam adding system are sequentially arranged on the main fire fighting pipe; the fire branch pipes are connected to each subarea needing fire extinguishing, and provide fire-fighting water supply for the subarea fire-fighting equipment; each subarea is also provided with a fire detector; a branch control system for controlling the on-off of the fire branch pipe is arranged on the fire branch pipe; the control center is respectively connected with a water supply system of a high-pressure water mist pump set of the main fire fighting pipe, a foam adding system, branch control systems on all the fire fighting branch pipes and a fire detector through cables; and the control center acquires a detection signal of the fire detector and respectively controls the water supply system of the high-pressure water mist pump set, the foam adding system and the branch control system to work.
The water supply system of the high-pressure water mist pump set comprises a high-pressure pump set and a pressure sensor which are connected to a fire main pipe, and further comprises a pump set controller and a frequency converter; the control end of the frequency converter is connected with the high-pressure pump set; the signal acquisition end of the pump set controller is connected with the pressure sensor, the frequency conversion control end of the pump set controller is connected with the frequency converter, and the controlled end of the pump set controller is connected with the control center through a communication cable.
The foam adding system comprises a foam adding controller, a water supply flow sensor connected to a fire main pipe and a foam adding device; the signal acquisition end of the foam adding controller is connected with the water supply flow sensor, the control output end of the foam adding controller is connected with the foam adding device, and the controlled end of the foam adding controller is connected with the control center through a communication cable.
The branch control system comprises a regional control box and a control valve connected with the regional control box, and the control valve is connected to the fire branch; and the controlled end of the area control box is connected with the control center through a cable.
The foam adder comprises a mixing cavity, wherein a water inlet and a water outlet which are used for connecting a fire-fighting main pipe are formed in two ends of the mixing cavity; the foam adder also comprises a foam box for storing foam extinguishing agent, and the foam box is connected with the mixing cavity through a foam conveying pipeline; a foam delivery pump and a foam flowmeter are arranged on the foam delivery pipeline; and the controlled end of the foam delivery pump and the signal output end of the foam flowmeter are respectively connected with the foam adding controller through cables.
The fire extinguishing method of the double-medium high-pressure water mist fire extinguishing system specifically comprises the following steps:
(1) the fire control center detects the fire conditions of all the regions through communication with the fire detectors of all the sub-regions; each area is divided into a rapid fire extinguishing area and a secondary loss reducing area according to the characteristics of the area; when a fire disaster does not happen, the water supply system of the high-pressure water mist pump set and the foam adding system do not work, and meanwhile, the control valve on the fire branch is ensured to be closed through the branch control system of the fire branch pipe;
(2) when the fire control center detects that the fire detector gives an alarm, firstly, judging the type of the area to which the alarm fire detector belongs, and when the type of the area to which the alarm fire detector belongs is a region for reducing secondary loss, controlling a water supply system of a high-pressure water mist pump set to work by the fire control center through a cable; meanwhile, a branch control system on a fire branch corresponding to the fire area is controlled to work, the control valve on the branch is ensured to be opened, and the fire branch provides fire-fighting water supply for the area to realize pure water fire extinguishing;
(3) and (3) when the area belongs to the quick fire extinguishing area, continuing to execute the step (2), controlling the foam adding system to work by the fire control center through the communication cable, and adding a foam extinguishing agent into the fire main pipe by the foam adding system to realize foam fire extinguishing.
In the step (2), when the water supply system of the high-pressure water mist pump set works, the pump set controller collects signals of the water supply flow sensor in real time and carries out PID calculation, and the output of the frequency converter is controlled through the PID calculation result, so that the output water pressure of the high-pressure pump set is controlled.
In the step (3), the foam adding system adds a foam extinguishing agent into the fire main pipe, the foam adding controller collects output signals of the water supply flow sensor and the foam flowmeter in real time and controls the foam delivery pump according to a preset foam proportion, and a PID algorithm is adopted as a control algorithm; under the control of the foam adding controller, the foam delivery pump delivers the foam extinguishing agent in the foam box to the mixing cavity through the foam delivery pipeline, and the foam extinguishing agent is mixed with the high-pressure water flow in the mixing cavity and then flows out from the water outlet to realize foam fire extinguishing.
Has the advantages that: the system of the invention puts out a fire by linking high-pressure water mist pure water and foam addition, and can automatically start foam addition fire extinguishing or pure water fire extinguishing according to fire types in different areas. When a fire area has a requirement for rapid fire extinguishing, such as an oil depot fire, the system automatically starts the foam adding system, and the foam additive is automatically added according to a preset proportion to meet the requirement for rapid fire extinguishing; when a fire area has a requirement of small secondary loss of fire, the pure water fire extinguishing system is automatically started, temperature is rapidly controlled, dust is reduced, fire is controlled, personnel are rapidly evacuated, the pure water fire extinguishing system can be started firstly according to the fire, and after the personnel are safely evacuated, the foam feeding system is started by starting the foam delivery pump.
Drawings
FIG. 1 is a schematic diagram of the system structure of the dual-medium high-pressure water mist fire extinguishing system of the present invention;
FIG. 2 is a schematic structural diagram of a foam adding system in the dual-medium high-pressure water mist fire extinguishing system according to the present invention;
FIG. 3 is a schematic diagram of a PID algorithm for controlling the output of a frequency converter by a pump set controller through a PID calculation result in the operation of a water supply system of a high-pressure water mist pump set.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.
As shown in figures 1-3, the double-medium high-pressure water mist fire extinguishing system comprises a control center 1, a main fire fighting pipe 2 and a plurality of fire fighting branch pipes 3 connected with the main fire fighting pipe 2. A water supply system of a high-pressure water mist pump set and a foam adding system are sequentially arranged on the main fire fighting pipe 2; the fire-fighting branch pipes 3 are connected to all sub-areas needing fire fighting and provide fire-fighting water supply for fire-fighting equipment in the sub-areas, fire detectors 7 are further installed in the sub-areas, and branch control systems used for controlling the on-off of the fire-fighting branch pipes are installed on the fire-fighting branch pipes 3; the control center 1 is respectively connected with a water supply system and a foam adding system of a high-pressure water mist pump set of the main fire fighting pipe 2, a branch control system on the branch fire fighting pipe 3 and a fire detector 7 through cables; the control center 1 obtains detection signals of the fire detector 7 and respectively controls the water supply system of the high-pressure water mist pump set, the foam adding system and the branch control system to work.
The water supply system of the high-pressure water mist pump set comprises a high-pressure pump set 41 and a pressure sensor 42 which are connected to the fire main 2, and further comprises a pump set controller 43 and a frequency converter 44. The control end of the frequency converter 44 is connected with the high-pressure pump unit 41; the signal acquisition end of the pump group controller 43 is connected with the pressure sensor 42, the frequency conversion control end of the pump group controller 43 is connected with the frequency converter 44, and the controlled end of the pump group controller 43 is connected with the control center 1 through a communication cable.
The foam adding system comprises a foam adding controller 51, a water supply flow sensor 52 connected to the fire main 2 and a foam adding device 53. The signal acquisition end of the foam adding controller 51 is connected with the water supply flow sensor 52, the control output end is connected with the foam adding device 53, and the controlled end of the foam adding controller 51 is connected with the control center 1 through a communication cable. The foam adder 53 comprises a mixing cavity 531, and a water inlet 532 and a water outlet 533 which are connected to the fire main pipe 2 are arranged at two ends of the mixing cavity 531; the foam adder 53 further includes a foam tank 534 for storing a foam extinguishing agent, the foam tank 534 being connected to the mixing chamber 531 through a foam feed pipe 535; a foam delivery pump 536 and a foam flow meter 537 are arranged on the foam delivery pipeline 535; the controlled end of the foam delivery pump 536 and the signal output end of the foam flow meter 537 are respectively connected with the foam adding controller 51 through cables.
The branch control system comprises a regional control box 61 and a control valve 62 connected with the regional control box 61, and the control valve 62 is connected on a fire branch; the controlled end of the zone control box 61 is connected to the control center 1 by a cable.
The invention relates to a fire extinguishing method of a double-medium high-pressure water mist fire extinguishing system, which comprises the following steps:
step one, a fire control center 1 detects fire conditions of all regions through communication with fire detectors 7 of all sub-regions; each area is divided into a rapid fire extinguishing area and a secondary loss reducing area according to the characteristics of the area; when a fire disaster does not happen, the water supply system and the foam adding system of the high-pressure water mist pump set are controlled not to work, and meanwhile, a branch control system of a fire branch is controlled to ensure that a control valve 62 on the branch is closed;
step two, when detecting that the fire detector 7 with the region gives an alarm, the fire control center 1 firstly judges the region type of the fire detector 7 giving the alarm, and when the region belongs to the region with the reduced secondary loss, the fire control center 1 controls a water supply system of the high-pressure water mist pump set to work through a cable; meanwhile, a branch control system on a fire branch corresponding to the fire area is controlled to work, the control valve 62 on the branch is ensured to be opened, and at the moment, the fire branch provides fire-fighting water supply for the area to realize pure water fire extinguishing;
and step three, when the area belongs to a quick fire extinguishing area, continuing to execute the step two, simultaneously controlling the foam adding system to work by the fire control center 1 through a communication cable, and adding a foam extinguishing agent into the fire main pipe 2 by the foam adding system to realize foam fire extinguishing.
When the water supply system of the high-pressure water mist pump set works, the pump set controller 43 acquires signals of the water supply flow sensor 52 in real time and performs PID calculation, and the output of the frequency converter 44 is controlled through the PID calculation result, so that the output water pressure of the high-pressure pump set 41 is controlled.
Wherein, the foam adding system adds foam extinguishing agent into the fire main pipe 2, the foam adding controller 51 collects the output signals of the water supply flow sensor 52 and the foam flow meter 537 in real time, and controls the foam delivery pump 536 according to the preset foam proportion, and the control algorithm adopts PID algorithm; under the control of the foam adding controller 51, the foam delivery pump 536 delivers the foam in the foam tank 534 to the mixing cavity 531 through the foam delivery pipeline 535, the foam is mixed with the high-pressure water flow in the mixing cavity 531 and then flows out from the water outlet 533 to realize foam fire extinguishing (the foam fire extinguishing agent is automatically added into the fire main 2 of the pump group according to the preset proportion, and is fully mixed with the water through the high-pressure water flow flowing fast, and is directly delivered to the corresponding area through the high-pressure pipeline to spray and extinguish the fire).
Claims (1)
1. A two-medium high-pressure water mist fire extinguishing system is characterized in that: the double-medium high-pressure water mist fire extinguishing system comprises a control center, a main fire fighting pipe and a plurality of fire fighting branch pipes connected with the main fire fighting pipe; a water supply system of a high-pressure water mist pump set and a foam adding system are sequentially arranged on the main fire fighting pipe; the fire branch pipes are connected to each subarea needing fire extinguishing, and provide fire-fighting water supply for the subarea fire-fighting equipment; each subarea is also provided with a fire detector; a branch control system for controlling the on-off of the fire branch pipe is arranged on the fire branch pipe; the control center is respectively connected with a water supply system of a high-pressure water mist pump set of the main fire fighting pipe, a foam adding system, branch control systems on all the fire fighting branch pipes and a fire detector through cables; the control center acquires a detection signal of the fire detector and respectively controls a water supply system of the high-pressure water mist pump set, a foam adding system and a branch control system to work; the foam adding system comprises a foam adding controller, a water supply flow sensor connected to the fire main pipe and a foam adding device; the signal acquisition end of the foam adding controller is connected with the water supply flow sensor, the control output end of the foam adding controller is connected with the foam adding device, and the controlled end of the foam adding controller is connected with the control center through a communication cable; the foam adder comprises a mixing cavity, and a water inlet and a water outlet which are used for connecting a fire-fighting main pipe are formed in two ends of the mixing cavity; the foam adder also comprises a foam box for storing foam extinguishing agent, and the foam box is connected with the mixing cavity through a foam conveying pipeline; a foam delivery pump and a foam flowmeter are arranged on the foam delivery pipeline; the controlled end of the foam delivery pump and the signal output end of the foam flowmeter are respectively connected with the foam adding controller through cables; the water supply system of the high-pressure water mist pump set comprises a high-pressure pump set and a pressure sensor which are connected to a fire main pipe, and further comprises a pump set controller and a frequency converter; the control end of the frequency converter is connected with the high-pressure pump set; the signal acquisition end of the pump set controller is connected with the pressure sensor, the frequency conversion control end of the pump set controller is connected with the frequency converter, and the controlled end of the pump set controller is connected with the control center through a communication cable; the branch control system comprises a regional control box and a control valve connected with the regional control box, and the control valve is connected to the fire-fighting branch; the controlled end of the area control box is connected with the control center through a cable;
the fire extinguishing method of the double-medium high-pressure water mist fire extinguishing system specifically comprises the following steps:
(1) the fire control center detects the fire conditions of all the regions through communication with the fire detectors of all the sub-regions; each area is divided into a rapid fire extinguishing area and a secondary loss reducing area according to the characteristics of the area; when a fire disaster does not happen, the water supply system of the high-pressure water mist pump set and the foam adding system do not work, and meanwhile, the control valve on the fire branch is ensured to be closed through the branch control system of the fire branch pipe;
(2) when the fire control center detects that the fire detector gives an alarm, firstly, judging the type of the area to which the alarm fire detector belongs, and when the type of the area to which the alarm fire detector belongs is a region for reducing secondary loss, controlling a water supply system of a high-pressure water mist pump set to work by the fire control center through a cable; meanwhile, a branch control system on a fire branch corresponding to the fire area is controlled to work, the control valve on the branch is ensured to be opened, and the fire branch provides fire-fighting water supply for the area to realize pure water fire extinguishing; when a water supply system of the high-pressure water mist pump set works, a pump set controller collects signals of a water supply flow sensor in real time and carries out PID calculation, and the output of a frequency converter is controlled through the PID calculation result, so that the output water pressure of the high-pressure pump set is controlled;
(3) when the area belongs to the quick fire extinguishing area, the step (2) is continuously executed, meanwhile, the fire control center controls the foam adding system to work through the communication cable, and the foam adding system adds foam extinguishing agent into the fire main pipe to realize foam fire extinguishing; the foam adding system adds a foam extinguishing agent into the fire-fighting main pipe, the foam adding controller collects output signals of the water supply flow sensor and the foam flowmeter in real time and controls the foam delivery pump according to a preset foam proportion, and the control algorithm adopts a PID algorithm; under the control of the foam adding controller, the foam delivery pump delivers the foam extinguishing agent in the foam box to the mixing cavity through the foam delivery pipeline, and the foam extinguishing agent is mixed with the high-pressure water flow in the mixing cavity and then flows out from the water outlet to realize foam fire extinguishing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911297710.4A CN111035879B (en) | 2019-12-16 | 2019-12-16 | Double-medium high-pressure water mist fire extinguishing system and fire extinguishing method thereof |
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| CN201911297710.4A CN111035879B (en) | 2019-12-16 | 2019-12-16 | Double-medium high-pressure water mist fire extinguishing system and fire extinguishing method thereof |
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| CN111035879B true CN111035879B (en) | 2021-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5033554B2 (en) * | 2007-09-18 | 2012-09-26 | 株式会社モリタホールディングス | Oil tank fire extinguishing method, oil tank fire extinguishing system, fire extinguishing nozzle and oil tank with fire extinguishing equipment |
| CN201578786U (en) * | 2009-11-23 | 2010-09-15 | 公安部上海消防研究所 | Gas-foam spraying fire-extinguishing device |
| CN102606189B (en) * | 2012-04-06 | 2014-07-16 | 中国矿业大学 | Fire extinguishing and cooling system for coal cavities and loose areas in fire district of coal field |
| CN203102030U (en) * | 2012-12-24 | 2013-07-31 | 广东永强奥林宝国际消防汽车有限公司 | Foam mixing control system based on CAN (controller area network) bus for fire-fighting truck |
| CN208710870U (en) * | 2018-07-10 | 2019-04-09 | 佰薪（厦门）科技有限公司 | A kind of environmental protection water system automatic fire extinguishing system |
| CN109523759A (en) * | 2018-11-22 | 2019-03-26 | 广州大学 | A kind of intelligent fire-proofing monitoring system and method for logistics warehouse |
| CN110448847A (en) * | 2019-07-02 | 2019-11-15 | 上海鲲哥无人机科技有限公司 | A kind of control system and control method of fire-fighting fire extinguishing platform |
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