Water Pump Development Trends

The requirements for the development of agricultural water pumps are to improve efficiency, reduce energy consumption and make full use of natural energy. Replacing multiple small pumps with one large pump can improve unit efficiency, save materials, reduce energy consumption and project costs, and facilitate automated management. Therefore, various large-scale axial flow pumps and mixed flow pumps have developed rapidly. The maximum impeller diameters have reached 4.6 meters and 6.2 meters respectively, and the supporting power can reach up to 12,500 kilowatts. Mixed flow pumps have replaced some high-lift axial flow pumps and low-lift centrifugal pumps. trend. In terms of water extraction from deep wells, submersible electric pumps are mainly developed. The maximum diameter has reached 1 meter. Some use 6000-volt high-voltage motors with a maximum power of 2500 kilowatts. Water wheel pumps, wind-driven rod pumps, screw pumps, various diaphragm pumps driven by human and animal power, piston pumps and water pumps specially used for supporting sprinkler irrigation equipment have also received varying degrees of attention in China and some other countries.
Energy conservation and emission reduction have become an important part of China's economic development planning outline. In particular, more stringent emission reduction policies have been put forward for high energy consumption in industrial fields such as electricity, steel, nonferrous metals, petrochemicals, and water treatment. As industrial core fluid transportation equipment, water pumps occupy an important part of energy consumption and have become the primary problem to be solved in energy-saving work.
The most commonly used driving method for water pumps is to be driven by an electric motor. The energy-saving method of the pump is mainly to make the pump unit (pump, prime mover and conversion part) operate at the highest power, so that the electric energy consumed by the outside world is reduced to the lowest point. Pump energy saving is a comprehensive technology, which involves various aspects such as energy saving of the pump itself, system energy saving and application management operation.
The energy saving of pumps is of great significance: Pumps are large energy consumers. According to the General Machinery Industry Association, pump power consumption accounts for about 20% of the country's power generation. The improvement of pump power is of great significance to energy saving and emission reduction.
Article 4 of the "Property Management Regulations" of the State Council "The state encourages the adoption of new technologies and new methods and relies on scientific and technological progress to improve property management and service levels." Energy saving has always been one of the key tasks of property equipment management. With the continuous advancement of urbanization in China, there are more and more high-end communities and properties. High-efficiency and energy-saving water pumps that ensure energy-saving rates have become a hot-selling product in the market.
In response to the country's need to build a resource-saving society, photovoltaic water pumps have become a new research trend. Photovoltaic water pump systems use the sun's lasting energy to work at sunrise and rest at sunset. They do not require personnel supervision or public power grids. They operate independently, are safe and reliable. . The system can be matched with modern energy-saving irrigation facilities such as drip irrigation, sprinkler irrigation, seepage irrigation, and micro-moistening irrigation to solve the problems of domestic drinking water, farmland irrigation, soil and water conservation, and desert control in remote and arid areas. The photovoltaic water pump system effectively saves water and electricity, greatly reduces the investment in traditional energy, and completely achieves zero CO2 emissions, truly in line with the national development strategy of building a "resource-saving" and "environment-friendly" society. Solar water pumps, also known as photovoltaic water pumps, are the most attractive water supply method in areas with abundant sunlight in the world today, especially in remote areas that lack electricity. Using the inexhaustible solar energy available everywhere, the system automatically operates at sunrise. , resting at sunset, without the need for personnel supervision, and the maintenance workload can be reduced to a minimum. It is an ideal green energy system that integrates economy, reliability and environmental protection benefits. The photovoltaic water pump system is another new energy application system developed by China Electrical Solar Energy Research Institute after photovoltaic (wind power) power stations, photovoltaic building integration, and photovoltaic lighting systems.