Helping green manufacturing, open three-dimensional wound core dry transformation won the award

      The opening ceremony of the 2015 China Mechanical Engineering Society Annual Conference and the 5th Green Manufacturing Science and Technology Progress Award Ceremony was held in Nanning, Guangxi on November 20. Mr. Liang Qingning, Deputy General Manager and Chief Technical Engineer of Haihong Electric Co., Ltd. attended the ceremony on behalf of the company At this meeting, he took the stage to accept the award on behalf of the company.

      The Green Manufacturing Science and Technology Progress Award was funded and established in 2011 by Mr. Pan Letao, an honorary member of the Chinese Mechanical Engineering Society and chairman of the Hong Kong Anle Engineering Group, and his mother, Ms. Huang Muzhen. One of the earliest and largest engineering societies. There are currently 31 professional branches and 180,000 members. It is a very important external communication channel for my country's machinery industry and has undertaken a large number of international exchange and cooperation tasks entrusted by the industry and government departments. China The Society of Mechanical Engineering has joined 11 international organizations on behalf of China, and signed bilateral cooperation agreements with 45 first-class academic groups and professional organizations in 26 countries), aiming to commend and reward electromechanical equipment in mainland China according to the development direction of the national economy Manufacturing enterprises, air-conditioning and refrigeration industries, energy-saving design of houses, thermal power systems, low-carbon technology and other green manufacturing fields, manufacturing enterprises that have made outstanding achievements in energy conservation and environmental protection.

   "Open three-dimensional wound core dry-type transformer" is independently developed, designed and manufactured by Haihong Electric Co., Ltd. All core technologies are independent intellectual property rights, with nearly 100 patents. Combining the world's leading three-dimensional wound core technology of Haihong Electric Co., Ltd., using advanced VPI equipment and vacuum pressure impregnation technology, a mixed insulation system composed of NOMEX? Class H or C, can operate stably for a long time at a temperature of 220°C, and can withstand short-term operation at a temperature of 350°C, suitable for transmission and transformation in high-rise buildings, commercial centers, industrial and mining enterprises, oil platforms, subways and tunnels, etc. electrical system. Compared with traditional dry-type transformers, the iron cores are arranged in a three-dimensional equilateral triangle, the three-phase magnetic circuits are symmetrical and equal, and the three-phases are balanced. Compared with GB/T10228-2008 "Technical Parameters and Requirements for Dry-type Transformers", the no-load loss decreases on average 30%, the no-load current drops by 66% on average, and the load loss drops by 20% on average. Compared with the industry standard JB∕T 10088-2004 "6 ~ 500 kV class transformer sound level", the noise level is reduced by 8 ~ 10 dB; the core material utilization rate is 100%, the core cross section is nearly circular structure, and the filling factor can reach 0.95 ~ 0.96 , Compared with the traditional open-type laminated core dry-type transformer, it can save about 15% of copper material, save about 5% of silicon steel sheet, and reduce the cost of the whole machine by 10% to 15%. Reduce 5-6 production processes, save more than 10 hours of production time compared with conventional products; the coil adopts a positive and negative section winding design, with higher mechanical strength and stronger short-circuit resistance, compared with traditional positive section winding coils , can save about 15% of the amount of copper wire, and because the non-encapsulated coil is completely open, it can be repaired in time when there is a problem with the coil, reducing the loss caused by downtime. When the transformer’s operating life ends, the coil copper is easy to recycle. Moreover, NOMEX? paper can be degraded and has no pollution to humans, animals and the environment.

      The open three-dimensional wound core dry-type transformer is a green and environmentally friendly product that saves material and energy in use. Recently, the Ministry of Industry and Information Technology, the General Administration of Quality Supervision, Inspection and Quarantine, and the Development and Reform Commission jointly issued the "Distribution Transformer Energy Efficiency Improvement Plan (2015-2017)" to accelerate the development and promotion of high-efficiency distribution transformers, comprehensively improve the energy efficiency of distribution transformers, and promote Distribution transformer industrial structure upgrade. Open dry transformation will surely shine in the background of the national strategy of energy-saving and emission-reduction green development, ushering in a broader stage.