Yan’an Energy Chemical Electrical and Instrumentation Center of Yanchang Petroleum: Solving **troubles at low cost

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Yan’an Energy Chemical Electric and Instrumentation Center of Yanchang Petroleum: Solving **problems at low cost Author/Source: Yan’an Energy Chemical, Yanchang Petroleum Date: 2022-11-18 Clicks: 22 Recently, the Electric and Instrumentation Center carried out the modification of the frequency converters for 4 salt slurry centrifuges in the zero-emission evaporation unit at a cost of less than 100 yuan, effectively addressing the safety risks posed by salt powder to those frequency converters. The four zero-emission evaporation units, which are salt slurry centrifuges, function by rotating the salt slurry at high speeds to separate water from salt. However, due to design limitations, a large amount of salt powder escapes during operation, causing corrosion to surrounding equipment; therefore, it is necessary to adjust the speed of the centrifuges in order to reduce the amount of salt powder produced. This centrifuge is designed with only two speed settings, medium and high; it cannot meet the requirements for precise speed adjustment. The only way to adjust the speed is by opening the electrical control cabinet and modifying the frequency on the inverter. During this process, salt powder can enter the cabinet, causing irreversible corrosion and damage to components such as the inverter. “After analysis and evaluation by the center, a potentiometer costing less than 100 yuan was installed on the inverter to adjust the frequency. Holes and slots were made in the cabinet door to allow the knob of the potentiometer and the display screen of the inverter to extend outside the cabinet, which not only facilitates frequency adjustment and data monitoring but also ensures the sealing of the cabinet, thereby eliminating potential safety hazards. ”As introduced by Zhang Bin, the head of the center. Next, the center will conduct inspections and modifications for similar issues throughout the plant, thereby providing strong support for the stable operation of the company’s electrical equipment.