Discussion on 4 New Technologies of Building Fire Protection System

Abstract:The application of the 4 new technologies to building fire protection engineering can make future building fire protection facilities more and more intelligent, modern and efficient. This article focuses on the development and application of the four new technologies for building fire protection, and then focuses on the local government, related units and individuals, discussing what measures can be taken to promote the application of the four new technologies, and hope that the superficial opinions expressed will have useful effects.

Keywords

building fire protection, 4 new technologies, development and application, fire extinguishing agent, fire extinguishing technology, measures

As a part of construction engineering, building fire protection is responsible for fire alarm forecasting and fire fighting. In recent years, with the continuous emergence of new technologies, new products, new materials, and new crafts, building fire protection facilities are also changing with each passing day.

A. Development and application of 4 new technologies for building fire protection

1. Development of new fire protection technology and new technology
The progress of the times and the prosperity of the economy have made various new fire-fighting technologies and techniques have long-term development and are widely used in construction projects. First of all, as for sprinkler technology, it has developed from the old sprinkler heads to a variety of new products such as wet, dry, rain shower, water curtain, etc., and the latest sprinkler system and circulating open and close automatic sprinkler. Fire extinguishing system. Secondly, the XQKZ series of hydraulic and pneumatically controlled air pressurized water supply equipment can provide 10 minutes of fire-fighting water after a power failure, ensuring that all floors of high-rise buildings maintain the required pressure and flow. Furthermore, in the past few years, my country has built a high-rise building fire test tower, conducted fire smoke flow characteristics and smoke prevention and exhaust experiments, and obtained: "The best safety pressure of positive pressure air supply in the stairwell and the front room is 40pa, 30pa, there is no mechanical smoke exhaust system in the front room and the smoke exhaust in the aisle should be far away from the evacuation exit. The best conclusions such as "the new development of positive pressure air supply mechanical smoke exhaust technology is formed, but also the building fire protection belt It's so convenient. Finally, the automatic fire alarm and fire linkage system commonly used in building fire control centers nowadays, through computer bus communication and software programming, the filter cloth completes the alarm and linkage, and realizes the automatic fire alarm, automatic fire extinguishing, safe evacuation guidance, and operation display. Five functional modern automatic fire control systems such as computer image display and fire fighting management.

2. Development of new fireproof materials, fireproof accessories and components
With the improvement of the level of fire protection technology, various new fire protection materials, fire protection accessories and components that have emerged in recent years have also been developed by leaps and bounds, such as: gypsum building materials (paper-faced gypsum board, gypsum decorative board, fiber gypsum board, plaster Block and other gypsum products), rock wool products (rock wool board, rock wool tube shell, etc.), fire shutters (fire shutter doors, fire shutter windows, etc.), inorganic fire protection decorative panels, and fire dampers for ventilation and air conditioning systems, Smoke exhaust and fire dampers, smoke blocking walls, etc. all provide feasibility and convenience for the design and construction of fire protection systems in construction projects.

3. Development of new fire extinguishing agents.
The development of fire extinguishing agents has continued many functions, such as special fire extinguishing agents: there are special wet chemical fire extinguishing agents for extinguishing cooking oil fires or fat fires in buildings, as well as the "a type foam fire extinguishing agent" and compressed air foam fire extinguishing system developed in the United States. The YSP type A foam fire extinguishing agent developed by the Tianjin Fire Research Institute and the "cold fire" fire extinguishing agent capable of extinguishing type A, B, and D fires have also been introduced into the field of fire protection products in my country and have been widely used. There are also traditional fire extinguishing agents that are replaced by clean gases: traditional hydrogenated alkane fire extinguishing agents. With its use, people have found that this type of fire extinguishing tree has obvious damaging effects on the atmospheric oxygen layer. Therefore, there are problems to solve the problem. The newly developed gas fire extinguishing medium has been Put it on the agenda as a key research. At present, the ideal clean gas substitutes include hydrobromofluoroalkanes, hydrofluoroalkanes, perfluoroalkanes, chlorofluoroalkanes, fluoroiodo angstroms, emotional gases, etc. These new types of fire extinguishing doses will undoubtedly usher in A better tomorrow for building fire protection.

4. Application of new fire fighting technology

4.1 Water mist fire extinguishing technology. That is, the purpose of improving the fire extinguishing effect is achieved by changing the physical properties of the water. Since the particle size of the water mist is in the range of 40 to 200 μm, it can be completely evaporated in the fire field. Therefore, this technology has high heat absorption efficiency and good cooling effect. It has the advantages of fast extinguishing, water saving, and low water damage. Some products also have the effect of suppressing the concentration of fire smoke and improving the visibility of the fire field. Therefore, it has the advantages of Long-term promotion prospects.

4.2 Air suspension fire fighting system. The main component of the system is multiple air suspension generators. When the surrounding temperature of the air suspension generator reaches 100 to 120℃, the pyrotechnic agent in the generator will be ignited. Under the effect of the temperature and eruption of the pyrotechnic agent, the air The suspension generator can spray out the fire extinguishing powder inside. The average size of a single particle of this kind of fire extinguishing powder is only 1μm, which can fully cover the surface of the burning material and terminate the combustion reaction. In addition, the fire fighting system can work automatically in the event of a fire, and the fire extinguishing powder can stay in the air for several hours in the form of an air suspension, which can effectively inhibit the re-ignition of combustibles and increase the fire extinguishing effect by several times.

4.3 Nanometre fire extinguishing technology. The new type of solid micro-detection aerosol fire extinguishing agent newly developed by the use of rice technology not only overcomes the high aerosol spraying temperature of the existing aerosol fire extinguishing agent, weak light transmission, and the sediments are corrosive and extinguishing after moisture absorption. Class a fire has the disadvantages of poor performance, and has also researched and developed cold aerosol fire extinguishing agent, nanometre-level ultra-fine dry powder. Using its excellent chemical activity and catalytic performance, the fire extinguishing efficiency can be greatly improved.

4.4 Application of fire-fighting robot. I personally think that with the further development of fire fighting technology in the new century, the research and development of fire fighting robots will develop to the stage of practical application. Fire-fighting robots can not only perform fire field reconnaissance, chemical dangerous goods detection, fire extinguishing, cooling, decontamination, demolition, Rescuing people, opening and closing valves, moving objects, plugging leaks and other operations, you can also participate in fire service. For example, the security robot developed by Japan’s Temozak company can press the elevator switch by itself to patrol all floors of the building. When a fire is found, it can immediately use a fire extinguisher to extinguish the fire. The various sensors on the robot can sense smoke, heat and Suspicious people and other abnormal phenomena, and use the built-in communication device to report the abnormal situation to the security company. Once a fire occurs, the security company can switch the remote control system after receiving the information and instruct the robot to use the fire extinguisher installed on its body to extinguish the fire. Of course the application of firefighting robots.

The use cost is still relatively high, but I believe that with the advancement of technology and the changes of the times, one day it can be widely used.

B. Vigorously promote the application of the four new fire-fighting technologies

It can be seen from the above that the development and application of the four new technologies for fire protection have brought many conveniences to the construction field. In particular, the automatic fire alarm system is an important building automatic fire protection facility. Fire detection and alarm, networked alarm system, intelligentized fire-fighting linkage control, fire-fighting communication network technology and computerized alarm command and management are more advanced. In order to vigorously promote the application of the four new fire protection technologies and thoroughly implement the "Opinions of the State Council on Further Strengthening Fire Protection Work": Adhere to the advancement of science and technology, and rely on scientific and technological progress to continuously improve fire protection, fire fighting and rescue capabilities.
Promote the implementation of the strategy of strengthening the police with fire protection technology, and further enhance the internal and external fire prevention and control capabilities of buildings. It is recommended that the government organize relevant units to hold a fire protection technical specification exchange meeting, focusing on the promotion of new products and technologies, and relying on the progress of science and technology to do a good job Building fire protection work can achieve a multiplier effect with half the effort. Specifically, the design unit and the supervision unit can be required to promptly supervise and urge the new fire protection technology and equipment to use the new fire protection technology and new equipment and master the essentials in the work of the new construction, expansion, reconstruction, and fire hazard rectification , To be economical and safe, both legal and reasonable, always take the construction unit and the people’s life and property safety as the starting point, and vigorously promote popularization and application.

C. Specific application measures of the "four new technologies"

In addition to the government's active cooperation with vigorous promotion and application, the author believes that individuals and units should also take adequate measures to understand the importance of the "four new technologies", market-oriented, enterprise-oriented, and a combination of industry, academia and research. Focusing on high fire safety, reducing costs and costs, shortening the construction period, and aiming for higher quality and easier management, scientific and technological research is combined with construction projects. Specific measures: New technology: It is recommended that units attach great importance to timely participation in new technology release conferences or expositions, and timely review of relevant materials, organize the engineering department to hold seminars to learn new technologies together, and carefully study feasibility plans for actual fire protection projects. New technology: Technical personnel can be organized to inspect, learn advanced technology at home and abroad, and do more learning exchanges to make it smoothly applied in engineering. New materials: Material staff should keep abreast of industry trends, pay attention to the performance and application scope of new materials, and make fire protection projects safer, more environmentally friendly, healthier, and more efficient. New products: Long-term cooperative relations can be established with advanced manufacturers at home and abroad to keep abreast of new product releases so that they can be put into application as soon as possible. Conclusion: In short, through the promotion and application of new technologies, new materials, new processes and new products in the field of building fire protection, plus effective measures by local governments and related construction units and individuals, and the use of scientific management methods to supervise their effective implementation, I believe that achieving long-term, healthy, rapid, and safe and sustainable development in the field of building fire protection will be just around the corner.

References

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[2] Zhu Yongping;On the technical measures of fire protection for shopping mall buildings[j]; Yunnan Fire; 1999-04
[3] Li Rong; Talking about the new technology and development trend of fire safety [j]; Intelligent Building and Urban Information; 2011-04
[4] Zhou Yun; Research and Application of Modern Construction Engineering Technology [m]; South China University of Technology Press; 2001


Post time: Dec-08-2021