Model: 20L / 30L / 40L
External material: Ultra-thick 6mm steel body
Internal filling: heptafluoropropane
Starting conditions: electromagnetic start / mechanical emergency / manual start
Response time: ≤8 seconds
Fire extinguishing type: Class A, B, C fire
Heptafluoropropane automatic fire extinguishing system is a modern intelligent automatic fire extinguishing device integrating gas fire extinguishing, automatic control and fire detection. The system has advanced design, reliable performance, simple operation and good environmental protection.
（其物理性能见表1） ，其分子式为CF3CHFCF3，商标名为HFC-227ea，国外称FM-200 （其技术性能见表2） ，该灭火剂适用于全淹没灭火系统。 Heptafluoropropane is a colorless, odorless, pollution-free, non-conductive, low-pressure liquefiable storage gas extinguishing agent at room temperature. Its density is about 6 times the density of air (see Table 1 for its physical properties) . Its molecular formula is CF3CHFCF3, The trade name is HFC-227ea, and the foreign name is FM-200 (see Table 2 for its technical performance) . This fire extinguishing agent is suitable for full flood fire extinguishing systems. When the fire extinguishing agent is sprayed into the protective area, the fire extinguishing agent decomposes to generate active free radicals when it contacts the flame or high-temperature surface. The free radicals capture the active substances generated in the combustion chain reaction, destroy the chain transmission during the combustion process, and finally achieve the purpose of fire suppression. This method belongs to chemical fire extinguishing, with minimal physical effects such as cooling, diluting or isolating the air. Because it has the advantages of high fire extinguishing efficiency, no pollution to equipment, and no damage to the atmospheric ozone layer, it is currently the first choice for replacing halogenated fire extinguishing agents. It has been widely used in many countries and regions in the world; it has also been used by the Ministry of Public Security in China. As a recommended substitute for haloalkanes, it is widely used in the protection of various important places such as power, water conservancy, metallurgy, petrochemicals, telecommunications, industrial and mining enterprises, banks, civil aviation systems, such as computer rooms, telecommunications rooms, precision instrument rooms, and physical and chemical laboratories. , Flammable and flammable liquid rooms such as generator rooms, transformers, library, data library, archives, vaults, oil extraction platforms, hydraulic oil storages and places prone to electrical fire danger.
Hanging constant temperature heptafluoropropane fire extinguishing device is composed of fire extinguishing agent storage tank, glass ball nozzle, pressure gauge, safety valve and other components. The fire extinguishing agent storage tank is filled with heptafluoropropane (HFC-227ea) and pressurized ammonia, and the glass ball nozzle is installed at the outlet of the tank. Under normal circumstances, the temperature-sensitive glass ball on the nozzle is against the tank outlet. When a fire occurs, the increase in ambient temperature will continuously expand the liquid in the glass ball, eventually breaking the glass ball, and the fire extinguishing agent is sprayed through the tank outlet to extinguish the fire. The pressure gauge installed on the nozzle is used to check the pressure of the pressurized ammonia gas in the storage tank of the fire extinguishing agent, and reminds it to replenish the pressure in time.
①. Storage tank: It is used to store sevoflurane fire extinguishing agent. It has the functions of storage, release, gas filling, overpressure relief, pressure display and so on. As shown
②. Glass ball nozzle: It consists of a temperature sensing element, a sealed piston and a stainless steel base, which is installed on a storage tank to release the fire extinguishing agent.
Under high temperature conditions, heptafluoropropane undergoes physical and chemical reactions, decomposing fluorine-containing free radicals, and reacts with active radicals such as H +, OH-, etc. generated during the combustion process to generate gas phase interactions, interrupting the combustion chain and inhibiting the combustion reaction In addition, the chemical chain break in the chemical reaction of heptafluoropropane and a large amount of heat absorbed during the gas process can cool the fire.
Heptafluoropropane automatic fire extinguishing system has three starting modes: automatic, manual and mechanical emergency operation.
In the automatic state, if there is smoke (or temperature rise) in a protection area, the smoke (or temperature) fire detector in the protection area will act and send a single fire alarm signal to the fire alarm controller, and the controller will enter a single In the fire alarm state, the electric alarm bell is driven to issue a single fire alarm signal, and no control signal for starting the fire extinguishing system will be issued at this time. As the fire in this protection area spreads, the temperature continues to rise (or the smoke increases), and the temperature (or smoke) fire detector in the other circuit operates, sending another single fire alarm signal to the controller, and the controller immediately confirms When a fire occurs, a composite fire alarm signal and a linkage signal are also issued (turn off the air conditioner, air supply and exhaust device and fire valve, fire prevention, fire shutter, etc.). After a delay of 30 seconds, the controller outputs a signal to start the fire extinguishing system, and the fire extinguishing agent is released to the protective area through the pipe network to extinguish the fire. When the controller receives the feedback signal from the pressure annunciator, it illuminates the deflation indicator to prevent personnel from entering by mistake. In the manual state, the alarm controller only issues a fire alarm signal when a fire occurs, and does not generate a linkage.
In the automatic or manual state, after the fire attendant confirms the fire alarm, press the "emergency start" button on the panel of the alarm controller or on-site to start the fire extinguishing system immediately. Before the discharge control signal is output, press the "emergency stop" button on the alarm controller panel or on-site, the system will not output the discharge signal.
Huizhou Huiyang Dadi Fire Fighting Equipment Co., Ltd.
Enterprise QQ: 3437329544
Address: Huiyang Dadi Fire Fighting Equipment Co., Ltd.