Zibo Zhong Shi Shenlong Machinery Manufacturing Co., Ltd.   

China stone dragon Machinery Manufacturing Co., Ltd. is a Sino Hong Kong cooperation enterprise focusing on the marketing of heat exchange products and the heating of urban and rural areas. It is Sweden's general agent of northern Poland, and has deep cooperation with thermal power, steam and hot water products from Poland Seth international group and the US Armstrong International Inc. Shenlong machinery has formed a set of solutions and optimization services for thermal, steam, hot water and heating systems through cooperation with Chinese and foreign well-known thermal equipment manufacturers and independent exploration and innovation, and has been committed to continuously optimizing the operation and research and development of production and production to achieve the best performance by providing products, education, training and services. At the same time, the Shenlong SB spiral screwed tube heat exchanger developed by the company imported from foreign technology is the Shenlong SB heat exchanger developed by using Erwin turbulence buffeting frequency principle, acoustic resonance application criteria and advanced technologies such as CFD and FEM. Because of its unique structure, the heat transfer coefficient reaches the highest temperature of 13600W/M2. The Shenlong SB heat exchanger is a complete set of district heating equipment which integrates the Shenlong SB heat exchanger, steam trap, circulating pump, water pump, thermometer, pressure gauge, various sensors, pipelines and valves, and industrial control. The frequency conversion and water supply constant pressure system, water treatment system, flow control system, calorimeter and network communication control system are installed. Combined with the company's leading technology and rich experience, standardized and modular design is taken into consideration, so as to tailor a set of heat exchanger with better performance for users, which is more suitable for user conditions, and enjoys a high reputation in the heat transfer domain and has Chinese patents. Our company develops and produces spiral screwed tube heat exchanger independently. It has a national patent, the patent number: ZL200720027232.1 and the appearance patent number: ZL200730021204.4. There are two types of dismantling and non detachable, the shell is all stainless steel (304), the heat exchange tube has copper tube and stainless steel tube (316L), to adapt to different working conditions, it can provide users with excellent solutions. The spiral screwed tube heat exchanger is well made, with high heat exchange efficiency, reliable performance, wide application, convenient installation, beautiful appearance, small size and long service life. It is one of the best domestic shell and tube heat exchangers. The spiral spiral pipe heat exchanger shell is made of 304 stainless steel without considering the corrosion allowance, so that the weight is greatly reduced. The heat exchanger tube is made of 316L high quality stainless steel (micro carbon stainless acid resistant steel with good corrosion resistance and intergranular corrosion resistance, which can be used in chemical industry, fertilizer industry, and chemical fiber industry important corrosion resistant material). Design concept: for asymmetric flow design, the spiral tube winding process in the shell is 4~6 times longer than that in the shell. The gaseous medium stays longer in the heat exchanger tube and condenses more fully, and the effect is good. The shell volume is 4 times the volume of the tube, which can increase the flow velocity of the fluid outside the tube to enhance the heat transfer coefficient of the shell side of the heat exchanger. The flow velocity of the fluid is generally 3m/s to 5.5m/s. Inside the heat exchanger, the spiral spiral pipe with positive and reverse spiral wound is used. The clearance between the tube and the tube is 1 ~ 2mm, which enhances the turbulence effect of the fluid. The heat exchange has no dead angle, so that the fluid is involved in the heat transfer process. The heat transfer coefficient can reach up to 13600W/m2 K.