Balance Principle and Failure Causes of Multistage Centrifugal Pumps
The axial balance of an ordinary multistage centrifugal pump is performed by a balancing disk device, so the balancing disk and balancing ring play a significant role in a multistage centrifugal pump. The stability of the balancing disk of a multistage centrifugal pump is related to the normal operation and use of the multistage pump. The structure of the balance disk device for mining multistage centrifugal pumps consists of a balance disk, a balance seat, and an adjustment sleeve (some balance disks and adjustment sleeves are integrated).
Forecast and Analysis of China's Electrical Machinery Export Prospect in 2012
Currently, the National Gear Reducer Standardization Committee has discussed and approved the 12th Five Year Plan of the National Gear Reducer Standardization Committee, clarifying the outline of the 12th Five Year Plan: effectively implement the outline of the 12th Five Year Plan for the development of the national economy and the development and revitalization goals of China's equipment manufacturing industry, and strive to improve the standardized management level of the national gear reducer enterprises and even the entire industry, To adapt domestic transmission equipment to the development needs of China's key and major equipment manufacturing industry in the construction of the modern national economy, and to escort the transition of China's equipment manufacturing industry from a major production country to a strong R&D and manufacturing country.
"New Generation High Efficiency Motor Test Power Supply" Successfully Developed
In order to meet the market demand in the field of motor testing, Shandong Xinfengfeng Electronic Technology Development Co., Ltd. has recently developed a "new generation of high-efficiency motor test power supply". The experimental power supply can meet the factory inspection requirements of various types of motors, and has the advantages of environmental protection, energy conservation, multi-purpose, and convenient operation. Its technical indicators reach the advanced level of similar international products.
Six wind power CDM projects in Heilongjiang have been approved by the National Development and Reform Commission
On June 15th, six clean development mechanism projects of wind farms affiliated to Heilongjiang Company, including Heping Wind Farm, Aobao Wind Farm, Xinli Wind Farm, Wukeshu Wind Farm, Linjiang Wind Farm, and Jiangsheng Wind Farm, were approved by the National Development and Reform Commission at one time.
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