Water Pump Development Trend

The requirements for the development of agricultural water pumps are to improve efficiency, reduce energy consumption and make full use of natural energy. Replacing many small pumps with one large pump can improve unit efficiency, save materials, reduce energy consumption and project cost, and facilitate automatic management. Therefore, various large-scale axial flow pumps and mixed flow pumps have developed rapidly, with the largest impeller diameters reaching 4.6 meters and 6.2 meters respectively, and the supporting power 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 deep well water extraction, submersible electric pumps are mainly developed, and their maximum diameter has reached 1 meter. Some use 6,000-volt high-voltage motors with a maximum power of 2,500 kilowatts. Water wheel pumps, wind tie rod pumps, screw pumps, various human and animal driven diaphragm pumps, 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 has become the main content of China's economic development planning outline, and more stringent emission reduction targets have been put forward especially for high energy consumption in industrial fields such as electric power, steel, non-ferrous metals, petrochemicals, and water treatment. As an industrial core fluid transport equipment, water pump occupies an important part of energy consumption, and has become the main problem to be solved in energy saving work.
The most commonly used driving method for water pumps is driven by electric motors. The energy-saving method of the pump is mainly to make the pump unit (pump, prime mover and conversion part) run at the highest power, so that the power consumption of the external input is reduced to the lowest point. The energy saving of the pump is a comprehensive technology, which involves the energy saving of the pump itself, the energy saving of the system, and application management and operation.
The energy saving of the pump is of great significance: the pump is a large power consumer. According to the calculation of the General Machinery Industry Association, the power consumption of the pump accounts for about 20% of the national power generation. The improvement of the pump power is of great significance to energy saving and emission reduction.
Article 4 of the State Council's "Property Management Regulations" "The state encourages the adoption of new technologies and 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 promotion of urbanization in China, there are more and more high-level communities and properties, and high-efficiency energy-saving water pumps that ensure energy-saving rates in the market have become hot-selling products.
In order to respond to the country's demand for building a resource-saving society, photovoltaic water pumps have become a new research trend. The photovoltaic water pump system uses the sun's long-lasting energy to work at sunrise and rest at sunset. . The system can be matched with modern energy-saving irrigation facilities such as drip irrigation, sprinkler irrigation, infiltration irrigation, and micro-moisture irrigation to solve the problems of drinking water, farmland irrigation, water and soil conservation, and desert control in remote and arid areas. The photovoltaic water pump system effectively saves water and electricity, greatly reduces the input of traditional energy sources, and completely realizes zero CO2 emissions, which is truly in line with the country's "resource-saving" and "environment-friendly" social development strategy. Solar water pumps, also known as photovoltaic water pumps, are the most attractive way of water supply in sunny areas in the world, especially in remote areas without electricity. Using the solar energy that is available everywhere and inexhaustible, the system automatically operates at sunrise It is an ideal green energy system integrating economy, reliability and environmental protection benefits. Photovoltaic water pump system is another new energy application system after photovoltaic (wind power) power station, photovoltaic building integration and photovoltaic lighting system of China Electric Solar Energy Research Institute.