With the design and manufacturing technology and application technology of pump continue to improve, the pump manufacturing and production is along the large-scale, large capacity, high-lift, high-speed, serialization, universal, standardized direction. The automatic control level of pump station is higher and higher.
1. Large-scale, large-capacity
In recent years, the development of large-scale water pump technology very quickly, giant axial pump impeller diameter has reached 7m, submersible pump impeller diameter has reached lm. The new centrifugal submersible pump pumping flow has reached 1800m3 / h, the corresponding head llOm, the maximum water output of 28800m3 / h, the maximum capacity of the water pump up to 60000kW; H, and a further expansion of the trend. In the pump station, there have been a number of new large-scale structure of the pump station, such as “egg” structure pump station, out of the water pipe, pool construction pump station. With the promotion of the use of submersible pumps in the drainage, the corresponding emergence of a number of small space, investment, structure of the new large and medium-sized pump station, such as steel or reinforced concrete constructed wet well pump house structure.
2. High-lift, high-speed
With the pump cavitation, material strength and other issues continue to improve, the pump speed is also faster. In the 20th century, 80 years, the international level of multi-stage centrifugal centrifugal pump speed of 7500r / min, has now increased to 10000r / min. Increasing the speed of the pump will inevitably raise the lift. In 2009, the boiler feed pump single-stage head has broken the record of 1000m, multi-stage pump head can reach more than 2000m. To further achieve high-lift, is bound to improve the pump speed. Later, with the continuous progress of technology, pump speed to further high-speed direction. In the pump industry, this high-speed development trend is a worldwide.
3. Serialization, generalization, standardization
Product serialization, generalization, standardization is a modern industrial production process of the inevitable requirement. In 1975 the International Standardization Association has developed a rated pressure of 720kPa single-stage centrifugal pump main dimensions and specifications (ISO 2858-1975E). The standard pump performance range: flow rate of 6.3 ~ 400m3 / h, head 25 ~ 125m. In 2009, in Europe where the pump to meet this specification have been sold as a standard pump. China since 1958, in the unified model, series classification, size, etc. has also done a lot of work, water pump bracket, suspension, bearing frame and other major components have been a series of standards, the product of the “three “The degree of continuous improvement.
4. Pump station automation level rises progressively
In recent years, the pump station automation equipment more and more perfect, automatic control level is higher and higher. Modern pump station from the unit start, monitor operation, shut down to the multi-stage pumping station system regulation, optimal scheduling and so can achieve automatic control, computer technology and network systems in the automatic control of pumping station applications are increasingly widespread, the management level In the gradual increase.
With the development of science and technology, such as atomic energy and combustion industry, it will further require the development of a variety of special pump products with high speed, high temperature and high pressure, high efficiency and large capacity, and also constantly improve the quality of existing conventional products. Level. To achieve this goal, must be in the basic theory, computing technology, model testing, measurement methods and materials selection, processing technology and a series of links to innovation. In pumping station design and operation management, should take active measures to maximize the efficiency of the work of the pump to improve the level of automation and control of pumping stations.
