Four giant vacuum manufacturing giants gather
China's production of vacuum equipment began in the 1930s and experienced nearly 70 years of development. It has formed an industrial system with a complete range of types and a complete structure, and shoulders the heavy responsibility of carrying out technical equipment in various fields of the national economy. Over the years, industry enterprises have made significant improvements in the level of management, technology, and product quality through technology introduction, technological transformation, and joint ventures and cooperation. From the aspect of product output, variety, specification and quality, it can basically meet the needs of various sectors of the national economy and people’s lives. At present, the global vacuum pump market has annual sales of approximately US$2 billion, with an annual growth rate of approximately 7%. With the steady development of annual economic growth in China, China’s vacuum equipment manufacturing industry has also gained corresponding development space and is managed by Chinese chemical companies. The 7th China (Shanghai) International Chemical Technology Equipment Exhibition jointly organized by the association and Zhenwei Exhibition Group will be held on August 26-28, 2015 at Shanghai New International Expo Center. It will focus on the display of vacuum equipment manufacturing in China. The latest products and technologies. As the largest exhibition of chemical equipment in China, the exhibition set up a vacuum equipment company exhibition area in 2015 and attracted many vacuum equipment manufacturing companies. It is reported that in order to better promote the corporate brand and complete the rapid expansion of the market, China's four major vacuum equipment giants Shandong Bozhong, Shanghai vacuum pump, Zibo vacuum pump, Dalian Danai have all registered to participate in this exhibition. Shandong Bozhong Vacuum Equipment Co., Ltd. was established in March 2002. It mainly produces water (liquid) ring vacuum pumps, Roots vacuum pumps, screw vacuum pumps, helium vacuum dryers, vacuum pump closed-loop systems and vacuum units. At present, the company has obtained 8 national utility model patent certificates. On September 8, 2011, Bozhong Vacuum was successfully listed at the Qilu Equity Exchange. In 2012, he obtained the "High-tech Enterprise Certificate." Mr. Chen Zongwu, the manager of the technical department of the company, said that Bo Zhong was invited to attend the 7th Shanghai Chemical Equipment Exhibition in 2015 because there were many peers and related customers at the exhibition site. The combination of the company's exhibits and the exhibition was also very high. Choosing a good display platform is an important bridge for the company to open up the market, so we are honored to participate in this exhibition. Shanghai Vacuum Pump Factory Co., Ltd. was founded in 1934 and is the birthplace of China's first vacuum pump. For more than 70 years, after several generations of hard work, the company has become China's base for research, development and production of vacuum equipment. Products are widely used in aviation, aerospace, atomic energy, military, electronics, chemical, metallurgy, textile, food, medicine, environmental protection and other high-tech fields. Many new products have won many awards in national key construction projects. Some of these products are used on China's nuclear submarines. Ultra-high vacuum ion pumps are used in Beijing's positive and negative electron collider project. They have won award certificates and special award certificates issued personally by the Premier of the State Council. Yang Jianhua, deputy general manager of the company, stated that with the platform of CTEF Shanghai Chemical Equipment Exhibition, we can bring the most advanced products, technologies and solutions to the market, allowing Chinese and international customers to know more about us through the exhibition and let us The company has a good brand promotion throughout the chemical industry. It is understood that in order to improve the company's technical level and grasp the needs of industry development, the organizing committee will jointly hold the "2015 China Chemical Industry Corporation 500" in conjunction with the Chinese Academy of Sciences, China Chemical Industry Environmental Protection Association, Shanghai Chemical Industry (China) Council, East China University of Technology and other institutions. Strong forums and big enterprise summit forums, “Chinese chemical companies business opportunities under the new environmental protection lawâ€, “Assisting green chemical industry and environmental protectionâ€, “Study and application of high-efficiency centrifugal compressor localization†and other industry forums Technical Seminar. It is reported that the exhibition will also hold the 7th China (Shanghai) International Exhibition on Pumps, Valves and Pipelines and the 7th China (Shanghai) International Chemical Environmental Protection Technology and Equipment Exhibition in the same period.
The first type is the bare pipe water wall. This is the simplest structure of the water wall. The advantage is that ordinary seamless steel pipes can be used, and it is more convenient to replace the water wall pipe. The disadvantage is that the temperature of the furnace wall is still high, and heavy refractory bricks are required. The steel frame of the corresponding boiler should be strengthened. , The air leakage of the furnace wall is relatively large. Old-fashioned high-pressure boilers and medium and small boilers are used more frequently.
The second tupe is the membrane water wall. The membrane water wall is welded by seamless steel tubes with fins. The Water Wall Tubes are connected by fins to make the water wall into a whole. This kind of water wall is called a membrane water wall. Its function is to strengthen the heat transfer of the water wall and greatly reduce the temperature of the furnace wall. The furnace wall does not need refractory bricks, but only requires thermal insulation materials. Compared with the conventional heavy furnace wall, the weight can be reduced by 60% ~ 70%, the furnace wall heat storage is reduced by 80%, the start and stop time is shortened, and the fuel consumption is reduced. The load of the furnace steel frame is greatly reduced, saving refractory materials and steel.
The third type is the pierced pipe water wall. The barbed pipe water wall pipe is made by welding many grab nails with a length of 20 to 26 mm and a diameter of 6 to 12 mm on the water wall pipe. It is mainly used to lay the gas belt. Generally, for boilers that burn fuel with low calorific value and low volatile content, in order to stabilize the fire, pierced pipe water walls are often used for laying the fire protection belt.
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The boiler water wall is the main radiation heat surface, arranged inside the boiler chamber and proceeds the heat exchange directly with the high temperature flame. The convection tubes are the convection heat surface of the boiler, arranged between the boiler chamber outlet and the end heat surface and proceed the heat exchange directly with the high temperature fume. The water wall and convection tubes are the main heat surface of the boiler, the tubes diameter for both generally usedΦ 51-60mm boiler steel tubes, also as the request.