【 Weak current College 】 ultra-fine powder extinguishing technology in the storeroom of---Power By 【 China power house network 】

Preface archives is the cultural heritage, carrying large amounts of information on human activities, is the practice of authentic record, is a valuable asset, is mankind the important historical and cultural heritage. Maintain historical archives is the true face of eternal cause, along with the improvement of the social civilization, in economic development, technological progress, civilization play an increasingly important role. That year, crazy war fire wind, burned me much precious artifacts and archives, the national liberation, our archives, the Museum has grown substantially, especially since the reform and opening up, with economic development, more and more in the archives, museums and all levels of Government by the party and the attention; however, the daily fire still eroding precious archives left by the history, how to strengthen heritage and archives system for fire prevention, improve storeroom extinguishing technology, from fire losses to us, is a new stage on fire industry a new topic. China is currently applied to the storeroom was mainly to halon fire-extinguishing agent, but it is causing serious damage to the ozone, the main culprit in September 1987, representatives of 24 countries in Canada Montreal Protocol on substances that Deplete the ozone layer and the Montreal Protocol, including halons to atmospheric ozone damaging material production and consumption limits. China in 1991 and became a party to the Protocol, in 2005 year round out of Halon 1211, halon 1301 2010 phase-out. Therefore, developers can completely replace Halon fire extinguishing agent for new fire extinguishing agent, became the international fire science and technology the most hilarious one of research subjects; currently there have been many new fire extinguishing agent, there have been seven IG-541, perfluoropropane, three fluorine methane, aerosols, water mist, and other new products come out. These products have their own strength, but the archives are different warehouse fire, does not completely replace halon. At this point, the Wuhan green fire equipment co., Ltd. developed ultra-fine powder extinguishing products and Johnny, and using the "fire-fighting the most efficient and fastest, low cost, non-toxic and harmless" but a matter of concern. It marks a new era for fire fighting products. The first chapter of ultra-fine powder extinguishing technology development course traditional powder extinguishing agent is a dry, good flowability of solid powder, mainly consists of one or more have fire-fighting capability of inorganic compounds and hydrophobic components, inert fillers. Fire component is the core of dry powder fire extinguishing agent, hydrophobic components are silicone and hydrophobic fumed silica, with a wide variety of inert fillers, mainly up anti-caking, tap, improve campaign performance, catalytic dry silicone aggregate functions. Mainly used in the fight of solid, liquid, gas and electrical equipment, fire, etc. The main advantages of powder are: fire high efficiency and speed. The area of the fight combustible liquid fire extinguishant to compare, dry powder fire extinguishing with maximum efficiency, dry quickly control the fire and fire-fighting fires, often in a few seconds or 10 seconds and less vulnerable to fire terrain, temperature, and other environmental conditions. On human and animal drug-free or low-toxic effects on the environment is very small; thus in the phase-out of halons after extinguishing agent and has become the main force of fire fighting products. Dry powder extinguishing mechanism: fire, fire extinguishing agent with chemical fire extinguishing agent role, and have the physical characteristics of inhibitors, fire-fighting mechanism is as follows: (1) chemical inhibition: combustion process is a chain reaction process, OH and H radicals is key to maintaining combustion chain reaction free radicals, they have a very high energy, very lively, but life is short, once generated, immediately throw next reaction, generate more free radicals, the continuity and the combustion process. Components of fire extinguishing agent is burning non-active substances, when the powder extinguishing agent into the combustion zone and flame after mixing, dry chemical powder and flame free radicals, free radicals are transient absorption in powder surface, through this reaction, with powder, consume a combustion reaction of radical OH and H. When a large amount of powder to fog forms when the flame spraying, flame of radical transformation in the large-scale adsorption and so radical, leading to a drastic reduction in combustion of chain reaction, eventually the flame is extinguished. (2) the isolation effect: emit burning solid powder overlay surface, causing obstructions burning insulation layer. Especially when the powder overlay reaches a certain thickness, it can also serve to prevent recurrence. (3) the effects of cooling and suffocation: powder at high temperatures will evolve crystal water or factoring, these are endothermic reaction and decomposition gases generated not lively and diluted oxygen concentration on combustion zone to play a role in cooling and suffocation. Powder extinguishing agent of dry powder particle size on the fire performances have a significant effect. Unit extinguishing efficiency and fire particle diameter is closely related to each fire particles are present, the upper critical diameter is less than the critical diameter of particles play a role, all fire is greater than the critical diameter of particle fire extinguishing efficiency dramatically lower, less than the critical diameter of the larger fire particle fraction, the extinguishing effect is better. Common powder extinguishing agent granularity in 20 µ m-75 µ m, this particle dispersion of relatively poor, specific surface area is relatively low. Thus, quantitative powder has a total surface area is relatively small, each particle of mass settlement of larger, more quickly, and its thermal decomposition is slow, so its capture free radicals or activity groups, fire-fighting capability is very limited; then normal ABC powder principal component is the ammonium salt, easy caking, moisture and certain corrosive, thereby limiting the scope of the use of extinguishing agent. Therefore, the preparation in the burning space can evenly, suspension of ultra-fine powder fire extinguishing, guaranteed to reduce particle activity components unit space agent usage is to improve the effectiveness of extinguishing fire extinguishing an efficient means; however, because ordinary ammonium salts powder extinguishing agent must be carried out using silicone coated Technics, anti-caking treatment is moisture-proof, it cannot be processed into 10 µ m following the dry powder production technology for a long time no new breakthroughs. Superfine powder technology is the contemporary powder engineering technology development, is a high-techBasis of its application is constantly expanding. Superfine powder technology is a very important one for science and technology, United Kingdom KIDD company used spray-drying technique developed diameter < 5 µ m potassium hydrogen carbonate of ultra high-efficiency powder extinguishing agent, all submerged fire experiments show: fire extinguishing efficiency is 10 times the normal extinguishing agents; because of the required equipment and technological requirements of complex application, have been unable to. Wuhan green fire equipment co., Ltd, it was against this backdrop, after six years, $ 10 million, successfully developed a full intellectual property rights of ultra-fine powder extinguishing agent, and in August 2002 with Hubei Provincial Archives within the share of national release of "Superfine powder extinguishing agent and automatic fire extinguishing devices applied to the storeroom of" scientific and technological research projects; after a year of process improvement, hundreds of times of trial and error, success, and through national organizations of science and technology achievement appraisal, specified as a storeroom dedicated fire fighting products. Superfine powder extinguishing agent may be suspended for a long time, and be able to get around obstructions, spread to every corner of the drowned in a full or partial application by way of fire extinguishing technology, expanded to the automatic fire fighting, it is a dry powder fire extinguishing technology and nanotechnology development Crystal, represents at present extinguishing the highest level and direction of development. Chapter II Archives Depot fire technical requirements and application status for a, storeroom fire on fire technical requirements of the extinguishing agent storeroom with special requirements, such as: fire extinguishing agent is not on paper, silk cloth, film, tape, optical, etc files vector corrosive, not increase paper, silk and other night moisture content archives carrier cannot file vector of physical and chemical properties. Storeroom for use of extinguishing agent requires non-corrosive, non-toxic, harmless, except in compliance with the safety requirements for file management, also in line with the national environmental protection requirements. Storeroom for fire-fighting mode also has the special request, the request promptly fight early fire occurred to prevent fire spreading greater losses, thus requiring the use of automatic fire suppression equipment, sensitive and reliable. Storeroom always have staff that require fire extinguishing agent innocuous to human body, and so on. Second, the storeroom fire protection technology of halon fire extinguishing agent from the last century since the 1970s to its fire-extinguishing efficiency high and clean and so superior performance in the provincial Treasury large archives, universal application in the use of halon fire extinguishing agent is stopped, the currently available selection of transitional storeroom fire products have the following: 1, FM200 heptafluoropropane fire extinguishing system. It and fire-fighting mechanism of halon fire extinguishing agent, belonging to the category of chemical fire extinguishing, fire extinguishing efficiency is lower than halon, and, after a lot of experimental proof, heptafluoro at fire scene of high temperatures will produce large amounts of hydrogen fluoride (HF) gas, combined with the gaseous water to form hydrofluoric acid; hydrofluoric acid is corrosive strong acid, the skin, paper, glass, precision instruments have a strong corrosive effect. 2. carbon dioxide fire extinguishing system (CO2). Carbon dioxide fire extinguishing mechanism is a physical fire, on the dilution of the protected space of oxygen, smothering effects; its fire extinguishing efficiency low, relatively closed protection space, in time it is difficult to put out the fire early fire, usually uses the high-voltage or low voltage storage, high pressure system needs more storage cylinder group, occupying an area between the bottle, strict environmental temperature and low pressure systems you need peripherals refrigeration equipment, the cost of higher; for pipeline installation and maintenance requirements are more stringent, later maintenance costs, in particular, can make the withdrawal from the protection zone of suffocation death. (3) of the aerosol fire suppression equipment. Aerosol is a smoke fire extinguishing agent, also belongs to the chemical fire suppression, it relies on combustion smoke fire extinguishing, and also with the "hot" outlet temperature reaction in more than 80 degrees, and the generation of hazardous gases; because it is itself a source of ignition, and therefore not suitable for explosion and inerting; Sol fire extinguishing technology cannot make the pipe network system design for big space fire extinguishing, fire-fighting remnants of corrosive and very difficult to clear in recent years, many industry disable Sol for fire protection. 4, inert gases (LG541) fire-fighting system. Its disadvantage is when sprayed on noise, store multiple, store cylinder group pressure at room temperature (21 ° c) when, for 15MPa injection nozzle for minimum pressure 2.24MPa. High pressure increases very dangerous, but also relatively easy to leak, pipe fitting materials, installation, maintenance of high level requirements; as with carbon dioxide, its fire extinguishing mechanism to dilute oxygen, smothering, fire-fighting slow is the Achilles ' heel. Upfront costs and maintenance costs too high it is difficult to have one of the reasons for the extension and application. 5, water mist system. The fire-fighting mechanism is physical, use water particles absorb heat from the fire, the lower the temperature, and asphyxia combustion, water mist fire protection technology is not mature, mainly produces the droplet is too large, it does not apply to our paper, silk is affected by humidity such as destruction of the archives. 6, ultra-fine powder extinguishing systems. Wuhan green fire equipment co., Ltd. invented "Superfine powder extinguishing agent", average particle size < 20 µ m for storeroom-fighting is a cutting-edge technology. The extinguishing agent is a green-friendly fire extinguishing agent, through the Ministry of foreign identification is the domestic origination and obtained the national patent and is now in the world leading level. It on atmospheric ozone depletion potential (ODP) of zero global warming potentials (GWPs) is zero, no stimulation for skin and body, on the protection of non-corrosive, non-toxic and harmless. Fire residues is easy to clean up after, developed over a series of automatic fire suppression equipment, applied to the national archives of the storeroom was strongly recommended for fire. The extinguishing agent and equipment at the end of 2003 was issued by the national science and technology achievement appraisal certificate; 2004 Director of the second prize of scientific and technological achievements; is the only access to the national archives of the national science and technology award of fire protection products. Chapter 3 Superfine powder extinguishing agent applied to the storeroom of the experiment and effect of archival carrier Superfine powder extinguishing systems applied to the storeroom fire testing of archives to the Treasury because the storage of large amounts of paper files, audio, photographs, film, disks, and other special carrier, thusStoreroom with A class of fire (i.e. solid fire); a large number of tests have proven that ultrafine powder extinguishing A fire extinguishing system and prevent recurrence is very effective. (A) wipe out A test method for fire tests of class: will a ZFCX-5 (5 kg) hanging fire suppression equipment installed in indoor top central location, distance from the ground level is not less than 3 meters; testing of wood crib for a total of 112 root 40MM×40MM×635MM dry pine Batten, 16 layers, each layer 7 root, moisture content for 9-13% each layer Batten spaced placed with Iron nails, in test outdoor lighted up of gasoline, ignite wood crib on the bracket, simmering 5-6 minutes, then add burned wood crib and brackets are placed at the laboratory floor Centre, close the door on fire laboratory, carrying out of wood crib, fire extinguishing success! (2) off B class fire (liquid) pilot test methods: will a ZFCX-5 (5 kg) hanging fire suppression equipment installed in indoor top central location, distance from the ground level is not less than 3 meters; test area 1.63M2 of pans, diameter: 1.44M deep inside, bottom and Clearwater 0.15M for cushion, poured into 55 l 93, gasoline, and lighted pans are placed at the laboratory floor Centre, close the door on fire laboratory, carrying out pans, fire extinguishing success! (3) analog archives Depot fire testing of fire test selection ZFCX-4/10-Ⅱ (0.8 kg) micro hanging fire suppression equipment, laboratory built a file cabinet, place the books, and other paper products, Cabinet mounted micro hanging fire suppression equipment, books-on gasoline, artificial lighting books, close observation of fire doors, fire extinguishing success! (4) automatic alarm control fire testing of electronic control, ultrafine powder extinguishing devices can and market-ready any fire alarm controller interface, automatic control mode, with fire detectors, sound and light alarm, gas release door lamp, manual control box, enter the module, such as the composition of ultra-fine powder no storeroom network automatic fire extinguishing system. When the reserve there is a fire, smoke detector and heat detector will detect the signal into the control host, host and reserve entrance of sound and light alarm immediately to the police, when a host at the same time receive the same protection area 2 road signal, if the controller is set to auto, the alarm automatically after 30 seconds delay start of fine dry powder fire extinguishing device, if the status is set to manually, you need artificial press reserve the gate manually control box's emergency startup switches, the implementation of the fire. Now lit indoor experiment, automatic observation of the entire pans alarm control, alarm, fire alarm, start, success!, ultra-fine powder extinguishing agent on a carrier of test Archives Archives is a single, non-renewable resources, select the application to the archives of the fire extinguishing system, the Treasury, on the one hand, requirements for fire-extinguishing effect is good, fast extinguishing system, on the other hand requires extinguishing agent does not have to file vector corrosion and destruction in order to facilitate the preservation of archives of long-term security. Wuhan green fire equipment co., Ltd. production of ultra-fine powder extinguishing agent, is a completely different from ordinary powder's new patent product, by the national authorities and numerous experiments have proven that the extinguishing agent to file no corrosion and damage to the carrier. 1. test equipment: low temperature test instrument: control range-40 ° c ~ 130 ° c, accuracy 1 ° c to 2 ° c in test container: enamel tray 300mm×200mm3 a specimen: 30mm×50mm, thick 1 ~ 2 mm copper plate, aluminum plate and all three; printing paper 6, film, 4 volumes, optical point. 2, the test will be fine dry powder into a container, the Guinea pig separately ultra-fine powder extinguishing agent buried, and placed in a low-temperature test instrument boxes and press the test temperature and time through a loop, and do a comparative analysis of the blank test. After the 24-hour test, now check out the sample, copper and aluminum sheet with no rust, paper no color, no glue, no printing and writing do not thicken, fade; and extinguishing agent no discoloration, test qualified, fully comply with the requirements of chapter IV of the archives custody! Superfine powder extinguishing agent and common extinguishing agent price through the above description, we understand the ultra-fine powder extinguishing agent development process and principles, know the ultra-fine powder is powder extinguishing agent development of the latest technology. Please look at this picture, we will adopt this picture for all details of ultra-fine powder extinguishing agent and other current common gas fire extinguishing installations, where advantages.
The product name of ultra-fine powder, aerosol Halon 1211 fire-extinguishing efficiency high and low 1301IG-541CO2FM-200 low in storage conditions normal pressure storage atmospheric storage tank for storage of high-voltage special cylinder storage and high-pressure dedicated special cylinder storage and high-pressure steel cylinders for the storage of works dedicated to low cost and high maintenance of high school in simple easy complex complex complex complex toxicity no low toxicity and low toxicity and low toxicity without choking on protection of secondary damage no big no no no no ozone depletion potential (ODP) 0010000 use security good a good is not good there are better ways to install a network or network without network has a network with network have networks have network development phase is developing is developing a ban on the use of moulding and gradually reduce the use of transitions products
At present in the domestic market of fire extinguishing products: ultra fine powder, aerosol, Halon 1211, 1301, IG-541, high and low pressure CO2, heptafluoropropane several products. To select one among them the best product of integrated indicators is not difficult. Of these, aerosol on protection from harm is large, this is what we covered earlier, so here you can exclude this type. And halon fire extinguishing agent ODP value is 10, severe loss of ozone, countries have already banned the use of, and therefore can also be excluded. Carbon dioxide fire extinguishing system, eruption will make the suffocating, greater damage to the human body, the country is gradually reducing its use may also be excluded. Now, only three products can be used. Which of these two parameters are the same, we can observe the remaining key indicators, to discover the Superfine powder extinguishing agent.
Product name targets fine dry powder fire extinguishing efficiency IG-541FM-200In storage conditions normal pressure storage cylinder with pressure dedicated storage cylinder with pressure dedicated storage engineering cost low high school maintenance status of simple and complex complex
First, fire extinguishing and high efficiency.
Product name-fine dry powder fire extinguishing concentration 50 ~ IG-541FM-200 70g/m3 37.5%-42.8% 7%-10%
This table, we can see that in the same volume of space, the desired IG-541 extinguishing agent and protected space of the volume ratio of 37.5%-42.8% FM-200 7%-10% of the minimum fine dry powder, to protect the volume calculated per cubic metre of just 50 ~ 70 grams. Visible for its fire works best. Secondly, low cost, easy maintenance. In addition, ultra-fine powder extinguishing agent, FM-200 are IG-541 high pressure cylinders of compressed or liquefied storage. While Superfine powder extinguishing agent for solid low pressure storage, omitting a lot of complex equipment, significantly reducing costs. In maintenance, fine dry powder fire extinguishing device simply observe the barometer checking whether buck, driven by gas is very simple and reliable, low cost, without the need like other gas fire extinguishing agent, every year whether the leak detection of bottle, the valve is normal, but also to try to spray, procedures are complex and prone to leakage, and must be returned to the manufacturer before filling. Whether from a fire effect, installation costs, or a maintenance perspective, ultra-fine powder has incomparable advantages. It is precisely because these ultra-fine powder extinguishing agent advantages and, therefore, advocated the use of fine dry powder fire extinguishing device replacement of halon product is a general trend. In particular, apply to the storeroom fire, in the country's strong support of ultra-fine powder extinguishing products quality, technology breakthrough. It can provide efficient and reliable fire-fighting, safety and environmental performance as well as on future technological development of forward-looking, will no doubt make it the industry's most ideal choice. Appendix: current market other types of ultra-fine powder extinguishing device in the domestic market, apart from the Wuhan green production Superfine powder series products, Russia El Potosi GmbH "Blizzard" of fine dry powder fire extinguishing installations, Beijing century UNPROFOR company of century Star "pulse" of fine dry powder fire extinguishing installations, Shaanxi RAND senmao "lightning" fine dry powder fire extinguishing equipment and other products. The main characteristics of these products: a) using gas-driven. Place the powder box, fire extinguishing appliances occurs within the Flash built-in gunpowder to produce gases driven, therefore this type of fire extinguishing device starts with a tremendous explosion. A bowl-shaped 500g vehicle fire suppression equipment startup sound similar to a grenade explosion of sound, a 2kg fire extinguishing device startup noise is even greater. More than you put out the fire at startup, its noise and impact is very large, on the protection and the late withdrawal may cause harm. B) itself is the source of fire, it is inappropriate for the site, such as explosion suppression: gas station, gas station, etc. C) extinguishing device in ABC powder filling, the fire main components are the ammonium salt powder 90 per cent of diameter 20 μm. And chemical fire extinguishing agent, its particle size is inversely with fire extinguishing efficiency, that is, the smaller the particle size, the more efficient extinguishing fire. Therefore, the fire extinguishing efficiency is only really Superfine powder extinguishing agent of 1/4-1/6. D) because this kind of fire extinguishing device injection time is very short (< 1s), flame burning machine better fire effect for combustion of solid surfaces, such as paper of smoldering wood, cable, fire effect. Fire release after combustion despite the fight, but this kind of smoldering often soon developed into a flame burn. Archives are the cultural heritage, bears a great deal of information on human activities, has documented, extended the functionality of human culture. A unit of archives, record the history and present important information. File is a single, non-renewable resources. Therefore the choice of fire-extinguishing system storeroom, on the one hand, requirements for fire extinguishing effect is good, effective in extinguishing a fire, preventing the spread of the fire; on the other hand, requires extinguishing agent does not have to file vector corrosion, fire-fighting equipment in the release of fire extinguishing agent is not a physical damage to the archives of the carrier, in order to facilitate the preservation of archives of long-term security. In the past in the storeroom of the fire extinguishing system with the use of halon (halides) fire-fighting system, heptafluoropropane (FM200) fire-fighting system, carbon dioxide (CO2) fire-fighting system, water mist fire protection systems. By my Government to develop the Chinese ODS phase-out provisions of the national programme, China is 31 December 2005, Halon 1211 fire-extinguishing agent to a full stop of production and use. Several other extinguishing agent and system also has its inherent flaws: heptafluoro in fire generated a lot of hydrofluoric acid, there are serious archives carrier acid etching; carbon dioxide extinguishing systems easily personnel asphyxia, and the system for warehouse doors, Windows, and other technical requirements; water mist systems for warehouse space to put out the fire, you need to build a private pool and large capacity dedicated pump, not only to use high cost, fire extinguishing system release will bring to archive large amounts of water, the carrier to file security management risk. In recent years, also in the archives of the Treasury used the "pulse" of ultra-fine powder extinguishing devices. This class is used to fire suppression equipment storeroom there its inherent flaws: a) archives, there is a wide range of warehouse storage of paper archives, audiovisual, photographic, film, disks, and other special carriers for archives, and archival storage of fire have the characteristics of A class of fire. One of its characteristics is the storeroom of the fire begin often surface burning (smoldering), and then develop into a flame burn. The "pulse" of the class of fire suppression equipment due to the use of gas explosive-driven, fire extinguishing agent injection time of less than 1 second, due to the injection time very short, for fighting a fire flame burning machine better results, and for smoldering fire effect. Storeroom of smoldering fires cannot exterminate, soon will become flaming combustion fire, to store archives greater losses. B) because the fire suppression equipment by lit interior of gunpowder resulting gases driven, fire extinguishing device startup accompanied and grenade-like explosions and impact, more than at the start of its explosion and the impact is even greater. The Archives library facilities, archives and personnel carriersAre vulnerable to harm. C) class fire extinguishing device boot disk is actually an igniter. When the indoor temperature reaches the set temperature, the startup disk in the igniter movement (similar to a hand grenade in La fire Sola fire), light to all fire suppression equipment fuse of ignition by fuse and extinguishing of gunpowder and driven fire extinguishing agent. A boot disk when the action is, in itself is the source of fire, easy to ignite paper archives. D) class fire extinguishing device in filling of the normal ABC powder extinguishing compositions, mainly for the attached ammonium phosphate, eruption, the archives on paper carrier of whiteness, pH, and other indicators of impact is very large, on CD, copper, aluminum products have corrosion. Chapter 5: Superfine powder applied to the storeroom case ultra-fine powder extinguishing systems already in Wuhan, Wuhan qiaokou district archives, archives, Shanghai far East Corporation, State of cwrc archives, archives of Yanzhou, Shandong province etc, good customer response, both from a technical performance characteristics or project cost considerations, ultra-fine powder is a storeroom, the best choice for fire extinguishing. By green fire equipment co., Ltd., Wuhan, Hubei Fire Corps participated in the drafting of the Ministry of public security of the ultra-fine powder extinguishing agent "GA578-2005 and the dry powder fire extinguishing device" GA602-2006 industry standard has been promulgated, this marks the ultra-fine powder extinguishing agent in the national wide spread application of the time had come; we can proudly announce that the Superfine powder in technology, China has to walk in the forefront of the world, China has played a world leader. We firmly believe that ultrafine powder extinguishing agent will lead the world dry powder extinguishing development direction, to the development of the cause of the motherland archives escort!