Take a direct look at the interior and use time to prove why the Woff oil cooled permanent magnet governor is the correct choice

Permanent magnet transmission device is an emerging industrial energy-saving technology, based on the application of electromagnetic Lenz's law, and a revolutionary transmission equipment that transmits torque through the air gap. In many fields such as electricity, metallurgy, chemical engineering, cement, coal, steel, and military industry, there are many high-power motors with a power of over 1000kW. Traditional permanent magnet speed controllers have a power of less than 2000kW, but their heat dissipation can only reach 300kW. When the power reaches 5000kW, the heat generation reaches 750kW, which increases the heat dissipation requirements by 1.5 times. This requires physical cooling of the permanent magnet governor.

In the early development and design of water-cooled permanent magnet speed controllers, the equipment was mainly composed of two chambers, a water chamber and an oil chamber, which were sealed internally by a water oil seal in the middle. Due to the easy leakage of cooling water into the bearings, lubrication failure or oil carbonization of the bearings can occur, making them susceptible to damage; At the same time, water and oil cannot achieve complete dynamic sealing. Water will leak into the oil, and oil will also leak into the water. Butter is prone to emulsification. These issues have resulted in lower safety and reliability of water-cooled permanent magnet governors. After continuous improvement, Wofu innovatively invented an oil cooled permanent magnet governor, using thin oil as the cooling medium. Its advantage is that it effectively controls the temperature of the disc body while lubricating the bearings of the speed control mechanism. It not only reduces bearing wear, but also plays a role in surface rust prevention, effectively ensuring the overall operational stability and service life of the equipment.

　　Recently, Wofu Permanent Magnet received an oil cooled permanent magnet governor WF-TW670 with a manufacturing date of September 2017, and returned it to the factory for maintenance. Let's take a look at the internal condition of this 6-year-old oil cooled permanent magnet governor

　　The outer shell of the oil cooled permanent magnet governor WF-TW670 can be seen, and the nameplate has been weathered by wind and rain for 6 years, with obvious signs of erosion. However, the main body of the internal speed control mechanism and the inner wall of the box are still clean as new.

Continuing the disassembly, it can be seen that the permanent disk body, bearings, speed control mechanism, and housing are still clean as new, without any signs of rust, cracking, or other damage.

Coincidentally, at a certain maintenance site, a water-cooled permanent magnet speed controller with a manufacturing date of August 2015 was found to have multiple internal rusts and cracked disc bodies after disassembly.

　　The Wofu oil cooled permanent magnet governor uses thin oil as the cooling medium, which has the advantage of effectively controlling the temperature of the disc body while lubricating the bearings of the speed control mechanism. It can not only reduce the wear of the bearings, but also play a role in surface rust prevention, effectively ensuring the overall operational stability and service life of the equipment.

　　Since its successful research and development, the Wofu oil cooled permanent magnet governor has been recognized by the Ministry of Industry and Information Technology as a "leading domestic" scientific and technological achievement evaluation (certificate number: 202034ZK4474), and has won multiple provincial patent awards. It has also been awarded the National Industrial Energy saving Technology by the Ministry of Industry and Information Technology, the National Excellent Recommended Product Technology for Electronic Energy saving and Environmental Protection, the first set of major technical equipment in Anhui Province, the "Five Hundred" Promotion Catalogue for Energy saving and Environmental Protection Industry in the Industrial Field, and the Military Civilian Integration Product Technology Recommendation Catalogue. It is widely used in energy-saving technology upgrades of high-power motors in many fields such as electricity, metallurgy, chemical industry, cement, coal, steel, and military industry, with an energy-saving rate generally reaching 20-50%, and has been highly recognized and praised by various owner units.