It was learned from the Science and Technology Department of Guangdong Province that after six years of technical research by Chinese scientists and technicians, "Low-voltage motor fully automatic phase-control and power-saving technology" recently passed the expert group identification led by Li Bohu, an academician of the Chinese Academy of Engineering in Beijing, and believed that the results filled The domestic blank has significant power saving performance and has broad application prospects.
The motor is the main power machine in the electrification era, and it is also the main energy-consuming equipment of the power grid. At present, there are about 1 billion motors in operation in China, which consume 60% of the total load of the power grid and 70% of the total industrial power. Due to the bottleneck of energy shortage, about 60% of the motors in China are currently operating at a load below 60% of the rated load, resulting in up to 30% of the electricity being wasted. Due to the long-term low-voltage operation, the number of burned-out motors in the country is more than 200,000 times per year. Therefore, the repair cost is about 2 billion yuan, resulting in a loss of up to 10 billion yuan. Therefore, research and development and promotion of low-voltage motor energy-saving technology in the absence of electricity is an important focus of China's current energy-saving society.
It is reported that "Low-voltage motor fully automatic phase-control and power-saving technology" is jointly established by Guangdong Heshan Doppler High-tech Power Saving Co., Ltd., the Institute of Electrical Engineering of the Institute of Science and Technology, and the Electrical Engineering Department of Tsinghua University. The production, research and research cooperation mode has lasted for 6 years. The technical breakthrough is completed. Wang Xiangyu, a professor of electrical engineering at Tsinghua University, said that the principle of the technology is to improve the external operating environment of the motor to achieve dynamic power management and achieve frequency conversion power saving. In the specific operation, it is to install high-performance digital processing circuit and exclusive development in the motor. The automatic phase control chip technology equipment automatically detects the external voltage signal and the power factor signal fed back by the motor for conversion processing, so that the motor can achieve optimal operation under low pressure.
At present, the motor power-saving products have obtained three utility model patents and invention patents, and passed the inspection of the State Administration of Quality and Technical Supervision. Tests show that the average power saving rate of the product is 15 to 55%, and the service life of the motor is prolonged. At present, the technology product has been mass-produced by Guangdong Heshan Doppler High-tech Power Saving Co., Ltd. The product has been put into the market in Foshan, Nanhai, Shenzhen, Guangzhou, Kaiping and Xinhui, and has been well received.
The expert appraisal team headed by Li Bohu, an academician of the Chinese Academy of Engineering and a researcher of the China Aerospace Science and Industry Group, agreed that the result is a fully automatic motor power-saving product with independent intellectual property rights. It is the first in China and the technology is at the international advanced level and can be widely used. Clothing, ceramics, furniture, hardware, electrical appliances, injection molding, automotive and other industries and fields. The expert group suggested that for this new energy technology that is the first in China and can generate huge economic and social benefits, the relevant state should take the lead to promote this technology and deepen it, and industrialize and promote this technology as soon as possible. The pace of application will make it play a constructive role in alleviating the current national power shortage.
The motor is the main power machine in the electrification era, and it is also the main energy-consuming equipment of the power grid. At present, there are about 1 billion motors in operation in China, which consume 60% of the total load of the power grid and 70% of the total industrial power. Due to the bottleneck of energy shortage, about 60% of the motors in China are currently operating at a load below 60% of the rated load, resulting in up to 30% of the electricity being wasted. Due to the long-term low-voltage operation, the number of burned-out motors in the country is more than 200,000 times per year. Therefore, the repair cost is about 2 billion yuan, resulting in a loss of up to 10 billion yuan. Therefore, research and development and promotion of low-voltage motor energy-saving technology in the absence of electricity is an important focus of China's current energy-saving society.
It is reported that "Low-voltage motor fully automatic phase-control and power-saving technology" is jointly established by Guangdong Heshan Doppler High-tech Power Saving Co., Ltd., the Institute of Electrical Engineering of the Institute of Science and Technology, and the Electrical Engineering Department of Tsinghua University. The production, research and research cooperation mode has lasted for 6 years. The technical breakthrough is completed. Wang Xiangyu, a professor of electrical engineering at Tsinghua University, said that the principle of the technology is to improve the external operating environment of the motor to achieve dynamic power management and achieve frequency conversion power saving. In the specific operation, it is to install high-performance digital processing circuit and exclusive development in the motor. The automatic phase control chip technology equipment automatically detects the external voltage signal and the power factor signal fed back by the motor for conversion processing, so that the motor can achieve optimal operation under low pressure.
At present, the motor power-saving products have obtained three utility model patents and invention patents, and passed the inspection of the State Administration of Quality and Technical Supervision. Tests show that the average power saving rate of the product is 15 to 55%, and the service life of the motor is prolonged. At present, the technology product has been mass-produced by Guangdong Heshan Doppler High-tech Power Saving Co., Ltd. The product has been put into the market in Foshan, Nanhai, Shenzhen, Guangzhou, Kaiping and Xinhui, and has been well received.
The expert appraisal team headed by Li Bohu, an academician of the Chinese Academy of Engineering and a researcher of the China Aerospace Science and Industry Group, agreed that the result is a fully automatic motor power-saving product with independent intellectual property rights. It is the first in China and the technology is at the international advanced level and can be widely used. Clothing, ceramics, furniture, hardware, electrical appliances, injection molding, automotive and other industries and fields. The expert group suggested that for this new energy technology that is the first in China and can generate huge economic and social benefits, the relevant state should take the lead to promote this technology and deepen it, and industrialize and promote this technology as soon as possible. The pace of application will make it play a constructive role in alleviating the current national power shortage.
Designed to perform the shearing and removal of the excess of metal accumulated during the welding, leveling in a homogeneous way the portion of the welded rail. It consists of a powerful hand pump which moves two hydraulic cylinders with the mobile shearing blade applied on, that, during the removing of the material, leans against the fixed cutting blades. The cutting blades are easily replaceable so as to adapt the tool to the rail profile to be processed. Two handles are placed in a well-balanced point, allowing an easy movement of the machine.
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