High-efficiency remanufacturing of electric motors
In March this year, in order to speed up the elimination of high-energy-poor backward mechanical and electrical equipment (products), according to the "Energy Conservation Law of the People's Republic of China" and the Ministry of Industry and Information Technology and other departments on the issuance of distribution transformer energy efficiency improvement plan (2015-2017) Notice: (Notice of the Ministry of Industry and Information Technology  No. 269), "Notice on Organizing the Implementation of the Motor Energy Efficiency Improvement Plan (2013-2015)" (Ministry of Industry and Information Technology Department  No. 226), the Ministry of Industry and Information Technology combined with industrial energy conservation and emission reduction work The actual situation, through the declaration of manufacturers and industrial users, relevant industry associations and experts review, put forward the "high energy-consuming backward mechanical and electrical equipment (products) phase-out catalogue (fourth batch)", and publicized. The catalogue consists of 127 specifications of three-phase distribution transformers, electric motors and electric arc welders. It aims to speed up the elimination of high-energy-poor backward mechanical and electrical equipment (products) and continuously improve the energy efficiency of key energy-using equipment. Remanufacturing in the fields of mechanical and electrical products, such as construction machinery, electromechanical equipment, machine tools, office equipment, etc., has begun to take shape in the Chinese market, especially represented by a number of remanufacturers such as Caterpillar, Komatsu and Volvo Construction Machinery. It has accumulated mature remanufacturing experience and is at the forefront of the remanufacturing industry. With the increasing demand for remanufactured products in the field of electromechanical products in China, more and more manufacturers will join the ranks of remanufacturing. I believe that in the near future, China's construction machinery remanufacturing industry chain will become more mature and remanufactured. The quality and service of the products are favored by more customers.
First, China's motor remanufacturing market has great potential
1. China's motor ownership is large, China's motor holdings are about 1.7 billion kilowatts. Among them, small and medium-sized asynchronous motors have a total of 1.325 billion kilowatts in 2014.
From the perspective of power consumption, the largest mechanical equipment used in China is pumps, compressors and fans. The motor consumption of these three types of equipment accounts for 74.2% of the total motor consumption. In addition to these three types of equipment, the motor is also widely used. Mixers, conveyors, crushers, etc.
From the number of units used, the largest mechanical equipment used in China is pumps, conveyors, fans, compressors and mixers, which account for 76.3% of the total number of motors used. Among them, the motors used in various types of pumps account for 50.2% of the total number of motors used.
2. China's motor power consumption in 2014, China's motor system total power consumption reached 3.553 billion kWh, accounting for 64% of total social electricity consumption. Among them, the total electricity consumption of industrial system motors is 2,872.7 billion kWh, accounting for 71.9% of the total electricity consumption of industrial systems.
3. Low operating efficiency of the motor system The operating efficiency of the motor system in China is generally low and the energy consumption is high, which is 20%~30% lower than the international advanced level. The efficiency of the unit itself is 3-5 percentage points lower than that of the developed countries.
4. Wasteful serious big horse-drawn car phenomenon is serious. Many users consider the safety factor to be large in the selection, generally take 10%~15% of the margin, "the big horse-drawn car phenomenon is serious" low-load operation, causing great Waste. Therefore, the industry generally believes that low-efficiency motors have a 50% energy saving potential, and industrial energy conservation must start with improving the efficiency of the motor.