Principle and advantages of flanged pneumatic ball valve. Is port 2 open or closed- Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Principle and advantages of flanged pneumatic ball valve. Is port 2 open or closed?

Principle and advantages of flanged pneumatic ball valve. Is port 2 open or closed?

Introduction to Terminal 3 of Beijing Metropolitan International Airport:
Terminal 3 of Beijing Metropolitan International Airport, with a floor area of more than 900000 square meters and 99 new flights; A new runway with a length of 3800 meters and a width of 60 meters will be built. The world's largest passenger plane, the Airbus A380, can also take off and land smoothly. In addition, a new north cargo area will be built, with corresponding supporting facilities for the construction of on-site transportation system, water supply, power supply, gas supply, oil supply, communication, airline base and other facilities.
The scheme design of the main building of Terminal 3 (T3) of Beijing Metropolitan International Airport [1] is in the charge of NACO and Norman Forth Architects, the design management and construction drawing design of Beijing Architectural Design and Research Institute, and the special design of weak current/information system is in the charge of Electronic Engineering Design Institute of Civil Aviation Airport (Chengdu). In June 2000, the General Administration of Civil Aviation of China began to study the medium - and long-term planning of Beijing Metropolitan International Airport. On March 26, 2004, the construction and supervision bidding of Terminal 3 was completed, and the construction and supervision contract was officially signed The Development and Reform Commission approved the commencement of the expansion project on the same day, and the third phase of the expansion project of Chengdu Airport began. More than 22200 mu of land was requisitioned and 9 villages were relocated, involving 12000 people. The expansion project was fully completed at the end of 2007 and put into trial operation in February 2008, ensuring normal operation before the 2008 Beijing Olympic Games. Terminal 3 is located in the east of Beijing Dadu International Airport. T3 main building and its supporting works are located between the existing east runway and the new runway. Terminal 3 is the second largest single terminal in the world. Terminal 3 (T3) is composed of the main building, the domestic terminal and the international terminal. It is equipped with baggage system for automatic processing and high-speed transmission, rapid passenger rapid transit system and information system, with a total floor area of 986000 square meters. A new runway with a length of 3800 meters and a width of 60 meters will be built to meet the operating requirements of Class F aircraft. It is equipped with the world's advanced Class III precision automatic aircraft guidance system, which is China's current advanced takeoff and landing navigation system. Aircraft takeoff and landing can still be carried out under very low visibility. The world's largest aircraft, the Airbus A380, can take off and land smoothly. After successful runway test flight, it was put into trial use in October 2008. In addition, a new north cargo area will be built, with corresponding supporting facilities for the construction of on-site transportation system, water supply, power supply, gas supply, oil supply, communication, airline base and other facilities. The construction area of Terminal 3 of Beijing Metropolitan International Airport is more than 900000 square meters, with 99 new flights; A new runway with a length of 3800 meters and a width of 60 meters will be built. The world's largest aircraft, the Airbus A380, can also take off and land smoothly. In addition, a new north cargo area will be built, with corresponding supporting facilities for the construction of on-site transportation system, water supply, power supply, gas supply, oil supply, communication, airline base and other facilities. This is a huge project. In June 2000, the Civil Aviation Administration of China began to study the medium - and long-term planning of Lidu Airport. The overall appearance of the expansion project has been completed, 80% - 90% of the equipment installation and fine decoration have been completed, and the overall construction has entered the post sprint stage. The expansion project will be fully completed by the end of 2007 and put into trial operation in February 2008 to ensure normal operation before the 2008 Olympic Games. Among them, the runway of Terminal 3 will be put into trial use in October 2008 after successful test flight. Terminal 3 is composed of the main building, the domestic waiting corridor and the international waiting corridor. It is equipped with automatic processing and high-speed transmission baggage system, fast passenger rapid transit system and reliable information system. The total length of the automated passenger rapid transit system is 4 kilometers, and it runs every 2 minutes. At that time, when passengers come in and out of Terminal 3, the problem of long distance running in the airport with heavy loads, which is a headache for many passengers, will be solved.
Airport project: Introduction to the fire protection system of T3 terminal of Beijing Metropolitan Airport:
The multi wire control panel is the backup guarantee of the fire linkage system. Its function is to use the control panel when the alarm host fails to work normally for some reason and a fire is confirmed manually, and some equipment needs to be started. The control mode is one-to-one correspondence with the control equipment, and hard contact connection is adopted, which is equivalent to the on-site start and stop button of the equipment. Mainly for smoke exhaust fan, positive pressure blower, fire pump and other fire linkage control equipment. At present, the multi wire control panel on the market will be used together with a module, which is non coded and is mainly used to isolate the weak current of the fire alarm system from the strong current of the control equipment. Prevent the strong current from entering the alarm system and burning the alarm equipment when the equipment acts. But be sure to note that the module here is not replaced by the coding control module, otherwise the function of the multi line control panel will lose its effectiveness and the linkage equipment cannot be started when the host cannot work. The number of control points on the multi wire control panel is determined according to the number of smoke exhausters, positive pressure fans, fire pumps, spray pumps and other fire linkage control equipment.
DC uninterruptible power supply supplies power for linkage control module and controlled equipment in automatic fire alarm and fire linkage control system. The whole automatic fire alarm and fire linkage control system is the top priority. Once it goes wrong, the linkage system will be paralyzed. DC uninterruptible power supply is mainly composed of intelligent power supply panel and storage battery, with AC 220V as the main power supply and DC24V sealed lead battery as the backup power supply. The standby power supply shall be able to ensure the equipment to work for at least 8 hours after disconnecting the main power supply. The selected power panel shall have the functions of output overcurrent automatic protection, main and standby power automatic switching, standby power automatic charging and standby power over discharge protection. Shanghai Dongfeng Pump and Valve Factory assists in the infrastructure airport project, supporting the metal expansion joint product for the fire protection system of the T3 terminal building of Beijing Metropolitan Airport. This product mainly plays the role of vibration reduction and is widely used by many fire protection systems.

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