332 enterprises such as the hottest water pump are

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332 enterprises such as water pump are subject to special supervision! "Energy conservation" can no longer be delayed

the storm of major industrial special energy conservation supervision in 2019 is coming! On June 28, the Ministry of industry and information technology issued the notice on Issuing the 2019 national major industrial special energy conservation supervision task (hereinafter referred to as the "notice"). The notice shows that according to the key work plan of industrial energy conservation supervision in 2019, local organizations have declared that the storm of major industrial special energy conservation supervision in 2019 is coming

on June 28, the Ministry of industry and information technology issued a notice on Issuing the 2019 national major industrial special energy conservation supervision task (hereinafter referred to as the "notice")

the notice shows that according to the 2019 key work plan for industrial energy conservation supervision, all localities have organized and applied for the 2019 national major industrial special energy conservation supervision tasks. After overall consideration of industry characteristics, enterprise scale, location, supervision content and other factors, the Ministry of industry and information technology has determined the task of energy conservation supervision in various regions

according to the task, the total number of major industrial special energy-saving monitoring tasks in 2019 was 4655, including 332 special monitoring enterprises for the production and use of key general-purpose equipment such as motors, transformers, water pumps, fans, air compressors, etc. In 2018, 190 enterprises in violation of regulations were specially monitored for the implementation of rectification

among them, the water pump is a machine that transports or pressurizes liquid. According to different working principles, water pumps can be divided into volumetric pumps, vane pumps and other types. Positive displacement pump uses the change of its working chamber volume to transmit energy; Vane pump uses the interaction between rotating blades and water to transfer energy, including centrifugal pump, axial flow pump and mixed flow pump. At present, pumps are widely used in water treatment, food, pharmaceutical, chemical and other fields

Evolution of water pump energy saving technology

energy saving is a concept that every industry needs to attach great importance to. At present, the energy-saving technology of water pump has been applied in China for many years, and the overall technology continues to progress. The water pump on the market has the characteristics of low noise, high efficiency and low power consumption, and some products can even be comparable to imported water pumps

from the process of improvement, at first, China's water pump industry reduced power consumption by closing valves and reducing output. This method is artificially manipulated and relatively uncontrollable

At the end of the 1980s, China began to introduce the "frequency converter" control technology, which made a breakthrough in the power-saving technology of water pumps. By the end of the 1990s, the "water pump economizer" control technology began to develop rapidly, and the products with fishy eyes also began to appear in the market, which hindered the high-quality development of the whole water pump industry

after entering the new century, with the development of automation and intelligent technology, "intelligent control system of water pump" began to be favored by the market. The application of PLC, man-machine interface, filtering and other elements makes the water pump power saving more scientific and intelligent

the concept of energy saving promotes the upgrading of water pump products

in recent years, with the improvement of environmental protection requirements for buffer loss psionics, as well as the improvement of industry concentration, the market competition has become increasingly fierce, and water pump enterprises have to transform their products

for example, some enterprises have adopted "low wear technology of fluid variable spiral case", "three-dimensional flow impeller", "Nano fine grinding of impeller" and other high-tech technologies to improve the efficiency of circulating water pumps. The optimized pump efficiency has been significantly improved compared with the traditional method design, and the energy-saving effect can reach 15%-60%

there are also enterprises that actively absorb the good technology of similar products at home and abroad, innovate and develop optimized high-efficiency and energy-saving products, which have a wide range of types, good hydraulic performance, high efficiency and energy saving and other significant advantages

in terms of innovative design, the enterprise adopts the integrated design of three-dimensional hydraulic structure. In addition to the comprehensive analysis and calculation of hydraulics, structure, mechanics and vibration, the design process also takes into account the reasonable structural layout and high operation reliability

in addition, according to the on-site working conditions, many enterprises can also "Customize" pumps with different specifications and speeds for customers, so as to ensure that the pumps operate in the high-efficiency area, which changes the situation that the general pump impeller is affected by the pump manufacturing, it is difficult to meet the on-site demand, and causes a waste of water and energy

in the future, nu will adopt the method of force direction specified by conditions in the project

in the past, people have a one-sided understanding of water pump energy conservation, which is to improve the efficiency indicators of water pumps. In fact, in addition to the efficiency index, the stability, service life, materials, service environment and other factors of the pump performance need to be considered, including the sealing performance, hydraulic performance, high temperature resistance and so on. Pump enterprises need to carry out targeted design according to different environments and different uses

from the perspective of enterprises, designers should establish energy-saving awareness and design according to their own enterprise standards higher than the national machinery standards before design; Carry out reliability test and material selection test of products during the design process; During manufacturing, all processes are strictly controlled, so as to improve the use efficiency of water pump products

in addition to paying attention to the use of thermoplastic plastics (such as PVC) in the water pump itself, it is also necessary to pay attention to the relevant supporting facilities. The industry said that enterprises should focus on carrying out system engineering design from the perspective of energy conservation, so that all links of the system can achieve a good matching effect, including the connection of water pumps and motors, the design of pipes, the connection and coordination of relevant accessories, so as to achieve the purpose of energy conservation and efficiency improvement

from the perspective of users, the process flow and process parameters should be flexibly adjusted according to the needs of the environment and production during the use of the water pump. The industry suggests that the ideal way is frequency conversion speed regulation, which has high efficiency and wide speed regulation range, but the cost is relatively high

in addition, users should regularly maintain the water pump system to keep it in good running condition, regularly check and find out the existing problems, and timely repair and maintain, so as to prolong the service life of the water pump and achieve energy-saving benefits

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