


销售产品:进口DCS、PLC控制系统备品备件和大型进口系统模块备件公司
1.Allen-Bradley(美国AB)系列产品》
2.Schneider(施耐德电气)系列产品》
3.General electric(通用电气)系列产品》
4.Westinghouse(美国西屋)系列产品》
5.SIEMENS(西门子系列产品)》
6.销售ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic、Robots、MOTOMAN Robots。
7.estinghouse(西屋): OVATION系统、WDPF系统、MAX1000系统备件。
8.Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数据通信及处理等。Invensys Triconex: 冗余容错控制系统、基于三重模件冗余(TMR)结构的zui现代化的容错控制器。
9.Siemens(西门子):Siemens MOORE, Siemens Simatic C1,Siemens数控系统等。
10.Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
采购美国、德国、法国、意大利等欧盟国家工控产品、备品备件
impossible for the designer to completely judge which fire scene is more harmful or most likely to occur. Therefore, comprehensive, scientific and reasonable screening should be carried out when determining the fire scene, so as to avoid one sidedness of selection due to the limitations of the designer's own understanding of the fire law. The general design principles include the following three aspects: (1) objectively reflect the real fire. Although the design of fire scene can not completely repeat the real fire scene, it must be able to describe the main characteristics of real subway fire, and can not use a unified model to reflect all real fires. (2) Highlight the characteristics of fire source and be representative. According to the actual situation of subway fire, determine its fire source form, and then find out the fire source characteristics of subway fire through the full-scale experiment of fire source or the establishment of mathematical model, and this fire source characteristics can represent the most general fire characteristics, so as to adapt to the research of subway fire. (3) Fully consider the influence of subway building structure, use function and environment, and combine these different influencing factors as the boundary conditions of fire model into the study of fire source characteristics, so as to reflect the characteristics of subway fire development and spread. 3 Determination of subway fire scene during the determination of subway fire scene, it is necessary to determine the physical properties of combustible materials, fire load, location of fire point, etc. in subway fire scene based on the characteristics of fire source, combined with building structure, use function, environmental factors and other boundary conditions. 3.1 determination of subway fire load fire load refers to the total heat value generated by the combustion of all combustibles in the fire related space. The greater the fire load, the greater the risk of fire, and the more fire prevention measures are required [2]. Generally, it is expressed by the curve of heat release rate with time.The determination of subway fire load needs to consider two aspects: one is the fixed load, considering the combustibles of the subway carriage