The fan pump is a large-volume, wide-ranging, power-consuming production machine driven by an AC motor. The shaft power of these machines is proportional to the cube of the speed. After the load is reduced, the speed of the motor can be reduced, and the shaft power of the motor that drives the fan and the water pump can be greatly reduced, and the electric power absorbed by the electric hijacker from the power grid is greatly reduced, thereby achieving the power saving effect. The fan and pump power saving mainly adopts the frequency conversion speed regulation technology. The basic working principle is: the AC power supply is rectified and inverted, and converted into a variable frequency AC power supply. The rotation speed of the three-phase asynchronous motor can be performed under a constant torque. Real-time control. According to incomplete statistics, the installed capacity of wind turbines and pumps in Central China is about 25.3 million kilowatts, about 1.4 million wind turbines, and about 5.6 million pumps. The water consumption of the pump fan accounts for more than 30% of the total electricity consumption.

Compared with the advanced level in foreign countries, the efficiency of the domestic fan pump class is 5-10% lower than the design level; the actual operating efficiency is 30% lower. According to the survey, the utilization rate of low-power fans in Central China is generally low, such as a 1 kW wind turbine, the energy utilization rate is 3.36%, a 40 kW blower, the energy utilization rate is 5.6%, and even one 215 kW. The air blower's power utilization rate is only 8-16%. At the same time, wind turbines with energy utilization above 50% account for only 54% of all wind turbines, and only 60% of wind turbines account for 36%. The efficiency of the fan and blower is less than 70%, and the efficiency of the centrifugal pump and axial pump is less than 60%. It should be modified and replaced immediately. At present, about 25% of the fan water pumps in the whole region have been reconstructed. If it is estimated to be 20% per year, it can save 530 million kWh per year.

The statistics on the power saving potential of lighting electricity show that the lighting power of the whole network in 1997 was about 11.2 billion kWh, accounting for 9.3% of the total electricity consumption of the whole network. In recent years, people's living standards have improved rapidly, household lighting and high-energy-consuming electrical appliances have increased significantly, the tertiary industry has developed rapidly, and the lighting design levels of catering and shopping venues have generally increased, and most of these lighting fixtures still use high power consumption. Incandescent lamps with poor illumination are less efficient. Generally speaking, the luminous flux of a 1 watt rare earth fluorescent lamp is equivalent to the luminous flux emitted by a 60 watt incandescent lamp, which can effectively save 8 "Yao, the power saving effect is very significant. According to the calculation of 1.5 lamps per person, there are about 390 million lamps. Even if one tenth of them are replaced with energy-saving lamps, there will be 39 million, which can be reduced by 30 watts per power saving. The load is nearly 1.18 million kilowatts. Another example is a high-pressure sodium lamp or a metal halide lamp, which is more than 5% efficient. It can be expected that the promotion of energy-saving lamps will not only have significant benefits, but also have great potential. In 197, Zhengzhou City and Luoyang City implemented the “five-one” green lighting demonstration project. According to statistics, Zhengzhou City's "five one" project invested a total of 1.27 million yuan, using 1901 energy-saving lamps, a total of 656.69 dry watts, the annual electricity consumption of 182.6 million kWh, the daily reduction of electricity more than 50,000 kW, equivalent Less construction of a power station with a capacity of about 100,000 kilowatts can save more than 10 million yuan in construction funds. Luoyang City uses a total of 3779 盏 energy-saving lamps, 2119 electronic ballasts, 1728 voice-activated switches, a total investment of 381,300 yuan, saving 734,400 kWh, and direct economic benefits of 273,000 yuan.

Power Saving Potential of Electric Motors Electric motors are energy conversion devices that convert electrical energy into mechanical energy. In industrial and mining enterprises, the application of electric motors is very extensive. According to statistics, the proportion of electric energy consumed by electric motors in China accounts for more than 60Ofo of industrial electricity, which is similar to that of developed countries. However, due to the relative backwardness of China's motor manufacturing industry, not only the performance index of the motor itself has a certain gap with the advanced level, but also the motor power level difference is large, and the research and development of special motors are few. Therefore, the motor and the production machinery do not match, the phenomenon of "large horse-drawn car" is quite common, so that most of the motors currently used are in an uneconomical state of light load, low efficiency, and high loss. Increasing the efficiency of the motor and its drive system, and keeping the efficiency curve of the motor in a higher operating range in the increased load range, becomes an important way for the motor to save energy and reduce consumption. Generally, the three-phase asynchronous motor power accounts for more than 70% of the motor load. How to improve the efficiency and economic operation level of the asynchronous motor can be said to be the key to the energy-saving work of the motor. The main technical measures for motor energy saving include: motor energy-saving retrofit (including reduction of copper consumption, iron loss, mechanical loss, impurity loss), motor voltage regulation and power saving, motor speed regulation and power saving. According to the statistics of Central China Power Grid, the capacity of the entire network of motor equipment in 1997 was about 4.9 million kilowatts. China's motor operating efficiency is generally 75% 5%, which is 3% lower than the foreign advanced level. Most of the energy consumption or conversion is carried out through electromechanical equipment. The efficiency of electromechanical equipment and the amount of energy consumption will directly affect energy consumption and utilization. If the operating efficiency of the whole network motor can be increased by 2 to 3%, the entire network can save about 2.3 billion kWh per year.

Conveying Equipment Series

The Conveying Equipment Series is a collection of machines designed to transport materials from one place to another. These machines are used in a variety of industries, including manufacturing, mining, agriculture, and construction. They are essential for moving materials efficiently and quickly, reducing labor costs, and improving productivity.

One of the most common types of conveying equipment is the conveyor belt. This machine consists of a belt that moves continuously, carrying materials from one end to the other. Conveyor belts are used to transport a wide range of materials, including grains, coal, rocks, and chemicals. They are available in different sizes and configurations, depending on the specific needs of the industry.

Another type of conveying equipment is the bucket elevator. This machine consists of a series of buckets attached to a chain or belt. The buckets are used to scoop up materials from one level and transport them to another level. Bucket elevators are commonly used in the agricultural industry to transport grain and other crops.

Screw conveyors are another type of conveying equipment. These machines consist of a rotating screw that moves materials along a trough or tube. Screw conveyors are used to transport bulk materials such as grain, cement, and chemicals. They are commonly used in the food processing industry for transporting ingredients and finished products.

Pneumatic conveying systems are also commonly used in many industries. These systems use air pressure to move materials through pipes or tubes. Pneumatic conveying systems are often used in the chemical industry to transport powders and other materials that are difficult to handle with other types of conveying equipment.

In addition to these types of conveying equipment, there are many other machines available for transporting materials. Some of these include belt conveyors, roller conveyors, vibrating conveyors, and chain conveyors. Each of these machines has its own advantages and disadvantages, depending on the specific needs of the industry.

Overall, the Conveying Equipment Series is an essential collection of machines for many industries. These machines are designed to move materials efficiently and quickly, reducing labor costs and improving productivity. With so many different types of conveying equipment available, it is important for industries to choose the right machine for their specific needs.

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