Heptafluoropropane
sophisticated infrastructure damage; able to fire a low concentration, reliable Fight B, C class fires and electrical fires; storage space, high critical temperature, critical pressure is low, can be liquefied at room temperature storage; release does not contain particles or oily residue without damaging the atmospheric ozone layer (ODP zero), residence time in the atmosphere for 31 to 42 years, in line with environmental requirements.
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heptafluoropropane About heptafluoropropane application fire extinguishing installations pipe fire extinguishing system, the system diagram system composition application places no pipeline (tank) fire extinguishing system Introduction application site system components heptafluoropropane - system design and construction should follow the norms of heptafluoropropane - a pipe network and the network's strengths and weaknesses without Heptafluoropropane About 1,1,1-2-3,3,3 - heptafluoropropane its CAS number is 431-89-0 [1 ], and its structure is F3CCHFCF3. Colorless, odorless gas is a state of the halogen carbon (halocarbon), also called HFC-227, HFC-227ea, FE-227, and FM-200, its chemical formula is C3HF7, slightly soluble in water (260 mg / l .) Application Heptafluoropropane Heptafluoropropane does not contain the chlorine or bromine, is not the role of the atmospheric ozone layer destruction occurs, it is harmful to the environment used to replace the Halon 1211 and Halon 1301 fire extinguishing agent as raw materials. Heptafluoropropane the life cycle in the atmosphere about 31 years to 42 years, but also in the release will not leave residue or grease, can be discharged through normal exhaust channel, so it is suitable as a central repository for data center or server extinguishing agent. Usually these places will put a can containing compressed heptafluoropropane cans installed in the floor at the top, when a fire occurs, heptafluoropropane from the tank outlet discharge, quickly fire place of oxygen to drain away, and cool fire place, and thus to fire fighting purposes. Heptafluoropropane Although relatively stable at room temperature, but will still break down at high temperatures, and produce hydrogen fluoride, resulting in pungent taste. Other combustion products include carbon monoxide and carbon dioxide. Contact with liquid can cause frostbite heptafluoropropane. Heptafluoropropane may be used as rocket wet agent (propellant). Heptafluoropropane measurement used in the dispensing of the drug inhalers, for example, used in the treatment of asthma inhalers. Fire extinguishing devices heptafluoropropane gaseous at room temperature, colorless, tasteless, non-conductive, non-corrosive, no environmental restrictions, a shorter atmospheric lifetime. Fire burning chain mechanism is interrupted, fire fast, which protect the rescue of sophisticated electronic equipment and valuables are beneficial. Heptafluoropropane non-toxicity (NOAEL) concentration of 9%, toxic reactions (LOAEL) of 10.5% concentration of sevoflurane concentration of propane is generally less than 10% of the design to human security. The characteristics of a good cleaning of the (completely vaporized in the atmosphere does not leave residue), good gas and good electrical insulation systems for the physical properties of fire. 20th century, early 90s, the industrial countries the preferred alternative to Halon with heptafluoropropane fire extinguishing systems and fire extinguishing success into a pipe network device and without the pipe network (cabinet) two. Of these, the pipeline system is divided into receptacles outside the stored pressure systems and pressure systems, the main difference between the transmission distance for the different fire fighting agents. Transmission system within the storage pressure is generally not more than 60 meters from the external storage system, the transmission distance of pressure up to 220 meters (to Shanghai Golden Shield Fire Safety Equipment Co., Ltd. product as an example). A pipeline fire extinguishing system pipe fire extinguishing system of the body extinguishing agent storage bottle usually placed in a special cylinder room, through the pipe network, the fire broke out, the fire extinguishing agent from the cylinder, the transmission of the need to fire protection district , through the spray nozzle to put out the fire. System diagram Heptafluoropropane a pipeline system map
heptafluoropropane Figure heptafluoropropane a pipe network system diagram
system components heptafluoropropane gas fire extinguishing system including: fire extinguishers, group, high-pressure hoses, fire extinguishing agent one-way valve, start the bottle group, safety relief valve, selector valve, pressure signal, injectors, high pressure pipe, pressure pipe fittings and other components. 1, fire extinguishers group
heptafluoropropane Figure heptafluoropropane bottle group QMP
Each group contains fire extinguishing agent fire extinguishers, storage bottles, flat head control valves, safety valves, manual valves, pressure gauge, fire extinguishing agents. According to the size of bottle storage capacity can be divided into different models. Bottle Group Type: QMP60-PL volume of 60L QMP70-PL volume of 70L QMP90-PL volume of 90L QMP100-PL volume of 100L QMP120-PL volume of 120L QMP150-PL volume of 150L QMP180-PL volume of 180L 2, high-pressure fire hose high pressure hose is connected extinguishing agent bottles of group and one-way valve device.
high-pressure hose PLRG
3, check valve fire extinguishing agent fire extinguishing agent check valve installed in the high-pressure hose with a device between the collecting pipe, to prevent gas backflow.
heptafluoropropane gas check valve PLYD
4, start the group in the bottle filling unit start nitrogen bottle, when a fire started bottles started when receiving the command group selection opened the gas valves, control valves first bottle, the release of fire agent. Start bottle group contained gas cylinders,
paul smith bag, bottles of the first control valve, solenoid starter, gas check valve, safety valve, manual valve, pressure gauge, start the gas.
start bottle group QQP-PL
5, safety relief valves safety relief valves to prevent system overpressure.
safety relief valve QLAQ
6, the network selector valve when fire extinguishing system to protect multiple partitions, select the valves used to control the fire extinguishing agent into the corresponding protected areas. Based on the calculated diameter size, select the appropriate choice of the valve diameter.
selector valve PLFPTF
Model: PLFPTF25 DN25 PLFPTF32 DN32 PLFPTF40 DN40 PLFPTF50 DN50 PLFPTF65 DN65 PLFPTF80 DN80 PLFPTF100 DN100 PLFPTF125 DN125 PLFPTF150 DN150 7, the signal pressure control pressure signal spraying extinguishing agent release the feedback signal.
pressure signal device PLXH
8, for the spray nozzle PLPT extinguishing agent release.
Heptafluoropropane head
9, high-pressure pipelines used to transport high-pressure pipeline fire extinguishing agent. 10, high pressure pipe fittings used to connect high-pressure pipelines. Application of places have pipelines heptafluoropropane gas fire extinguishing system is suitable for: computer rooms, libraries, archives, valuables libraries, power stations (transformer rooms), telecommunications centers, clean room and other key parts of the fire protection. No pipe network (cabinet) gas fire extinguishing system, fire extinguishing agent storage bottle through the packaging into the fire cabinets, beautiful appearance, usually on the protection area in need of protection in the event of fire, not through the pipeline, directly to the protection zone placed within the spray fire. Introduction no pipe network (cabinet) heptafluoropropane gas fire extinguishing system is lightweight portable automatic fire of modern fire fighting equipment, fire-fighting performance of its high fire speed, low toxicity, non-fouling of equipment, fire fighting equipment performance, its control section can be linked up with the fire control center.
tank fire extinguishing devices
Application of places heptafluoropropane gas tank for fire extinguishing system: computer rooms, libraries, archives, valuables libraries, power stations (transformer rooms), telecommunications centers, clean rooms, and other key parts of fire protection. No pipe network system components (tank) heptafluoropropane gas fire extinguishing systems, including storage bottles, starting devices, safety relief valve, pressure gauge, enclosure, pressure signal devices, spray a short pipe, sprinkler, fire extinguishing agents. According to the size of the storage bottle into different types, the following safety equipment in Changsha, Ltd Long Line Non-pipeline (tank) fire extinguishing system, for example: GQQ 60-PL volume storage bottle 60L GQQ 70-PL volume storage bottles 70L GQQ 90-PL storage bottle capacity 90L GQQ 100-PL storage bottle capacity 100L GQQ 120-PL storage bottle capacity 120L GQQ 150-PL storage bottle capacity 150L GQQ 180-PL storage bottle capacity 180L heptafluoropropane - system design and construction should be followed regulate gas fire extinguishing systems GB50370-2005 gas fire extinguishing systems and acceptance of GB50263-2007 heptafluoropropane or gas fire extinguishing system fire extinguishing agent, is in line with the National Fire Protection Association (NFPA) developed NFPA-2000 specification for clean gas fire extinguishing agent, which is characterized is for a permanent staff of protected areas. December 1996 after a national testing center testing, which replace Halon and carbon dioxide are the main products. Heptafluoropropane the FM200, fire extinguishing is the use of total flooding fire extinguishing design, cast fire, the way of the main chemical fire. Range of concentrations in the design of fire-free within the state of no harm to human body! (Standard is generally 10%), but first you have to understand how the system works, there is a problem Caihui targeted solutions, followed by the proposal that required fire fighting, whether the condition is automatically or manually, the staff must Xianrang withdrawal, and must consider the following three aspects: First, heptafluoropropane itself has toxicity, a concentration of 10% or more, does not feel there will be a long time, there will be life-threatening. The second is to consider heptafluoropropane decomposition at high temperatures generated by the danger of decomposition may have, this decomposition are the main extinguishing agent in fluoride, where the presence of hydrogen will produce a pungent odor of hydrogen fluoride (HF .) Even if its concentration is very small, will inflict a high degree of discomfort and injury. This depends on the amount of decomposition products and the size of the fire Heptafluoropropane heating surface exposed to fire or the length of time, if the fire extinguishing agent concentration levels accumulated rapidly to reach, then the fire was quickly extinguished, decomposition also very small. Third, biomass burning in protected areas possible injury to personnel of poison gas is not expected. Reference: Heptafluoropropane (HFC-227ea) clean gas fire extinguishing systems section 7.0.2 shall be based automatic fire extinguishing system control, manual control and mechanical emergency operation three starts. Set in the protection zone should be automatic fire extinguishing system pre-control and manual control between the two methods. In automatic control program, should be arranged 0 ~ 30s adjustable delay jet component. Set the delay time should be evacuated as soon as possible according to the safety of the needs of the protection zone; no work for the usual protection zone can be set to 0s. In the design concentration is greater than 9% of the fire protection district, should be added the conversion manual and automatic control device, when someone enters a protection area, the fire extinguishing system to the manual control position; when the man left, returned to automatic control bit. Article 7.0.3 of automatic control device shall receive two separate fires in the signal to start. Manual controls and manual and automatic switching device should be located in the evacuation of exports outside the protection zone to facilitate the operations of local. Mechanical emergency operating device should be located within the storage bottle or protective zone between the exit door for easy operation to evacuate the place; and its mode of operation should be completed by two steps. Article 7.0.4 and Article prefabricated fire extinguishing system operation and control devices should include the opening of the closure device to be linked, fans and fire dampers and other equipment operation and control. The place has a fire control center, fire control system of the protective action zone information should be sent to the fire control center. This information includes information capture of fire fighting action, manual and automatic conversion and system failures. Heptafluoropropane - a pipe network and the advantages and disadvantages of a non-pipe network, a pipeline system through the pipe network spurt, spray evenly, so Blow uniform, fire effect, but not the network are generally placed directly onto the nozzle box , Blow not uniform; 2, the cylinder pipe network requires a separate set, the set up the network, without the pipe network does not need, if only to protect an area from an economic point of view the high cost of a pipeline system. 3, if more than one region, there are pipe network system can be protected using the same system multiple protection zones. Different fire protection zone, targeted Blow, without the protection zone of the network need to be set individually for each cylinder and the fire extinguishing agent, this time without the price of the network is relatively high. 4, the pipe network system between the cylinders in the cylinder. Because of distance, so the required pressure is high, the general 4.2MPa. Some of 5.6MPa. 5, no pipeline system in the protection zone cylinder. Because in the protection zone, so the pressure is not too high, so the general election 2.5MPa. Atlas Atlas entry for more extended reading: 1
fire extinguishing system should be set up automatic control, manual control and mechanical emergency operation three starts. Open Category: chemical, fire me to improve the
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