Ac Motor Speed Regulation Technology Of Modern Chemical Industry Has Become An Essential Technology

1 Introduction Shenzhen Huaneng Corporation is engaged in one of the first inverter technology

. The first application of a number of load frequency technology has Shenzhen Huaneng's participation, such as oil Pump (87 years of Daqing Oil Production Plant and Station 11 units), 20-ton bridge crane (89 years Dushanzi refinery), coking overhead crane (91 Maoming Petrochemical Company), 20 tons of converter tilting and oxygen gun down (93 Chengde Steel three years), acrylic fiber production line (94 in Daqing Chemical Fiber Factory), 2.8m 44m rotary kiln (90 years of non-ferrous metals Zhuzhou Smelter), 3.6m 30m calciner (92 years of Tangshan Alkali Factory), a large roll (93 medium-sized plant in Anshan Iron and evacuation process transformation frequency converter 50 sets), offshore platforms Power supply (92 Western oil companies in the South China Sea Equipment Department), 150HZ/160V200KW power (89 years, 9 sets of Shaoyang Chemical Fiber Factory, Jilin Chemical Fiber Factory 28 sets, 14 sets of Hubei Chemical Fiber Factory, Jiujiang Chemical Fiber Factory 12 sets, 8 sets of Yibin Chemical Fiber Factory), 1250KW / 6000V Electric Fan (Xinhua plant in Daqing two sets of 98), High pressure Ammonia pump (97 years Changling refinery, Liaohe fertilizer plants). In the chemical fiber industry, lots of their performance, the following one by one.

2 acrylic fiber production line Spinning process complex, multi-station require tension control, position control, some asked. Daqing Acrylic Fiber Plant 95 years of its introduction by the United States U.S. CHEMTEX ACC technology company's annual 50,000 tons of acrylic fiber production line frequency PLC Transformation. We use a "synchronous operation mode", set "no tension control link", "elastic frame synchronizer", "bus speed control mode", "Torque vector control" techniques, so that the entire production line of 20 tow processing unit synchronous operation, stable and reliable, drawing rate from 1.04 to 1.4-year yield up to 382 tons, reducing failures, saving maintenance costs 575,000 yuan, the annual increase product quality, improve economic efficiency grade pass rate up to 3.25 million, the annual Saving 580 000 kW. 97 years, the project appraisal by China Petrochemical Corporation, the experts concluded 90 years of international advanced level.

Lan of China Chemical Fiber Plant in 1965 from the UK exam Tao Scholz (Courtaulds) introduced the first set of 8000t / a acrylic fiber production plant, one-step production process using sodium thiocyanate.

Acrylic fiber production process is a very fine production process, speed accuracy is very high. In addition to fiber-forming and post-processing as well as directly dependent top processing speed, the spinning preparatory and liquid system, liquid level, pressure, flow control, and production of stationary, tow the quality of energy consumption are all related to speed performance directly or indirectly. The spinning production line up to 170m, the working procedure tow speed is set according to process requirements. The original design speed control system which is slip motor, DC motor and its matching Electronic System to achieve, but since the original British unit has been running 20 years, equipment is aging and failure rate, coupled with the device itself complex, maintenance of large, often a fluctuation in production will lead to volatility across the board, or even the whole line to stop production of stable poor, the number of unplanned shutdowns and more difficult to guarantee product quality.

1995 years spinning production line speed control system and major equipment, a comprehensive reform governor. A total of three spinning production line installed frequency converter 113 sets, all out of the slip motor and DC motor, significantly increase the stability of production, gradually reduced the number of unplanned shutdowns, silk waste, waste plastic was significantly reduced, product quality has significantly improved.

Frequency control technology, the 1995 annual output of 16000t / a, doubling the original design capacity. These achievements, in addition to equipment modification updates, aggressive wide frequency control technology are also key factors, to increase production only one, you can create effective year nearly 500 million yuan.

Frequency conversion technology because of its good stability, high reliability and greatly improve the operating cycle of the equipment, so that in the past due Electric Instrument causes a significant decline in the number of unplanned shutdowns, increase the output of nearly 150 tons per year, nearly one million additional benefits.

by: gaga

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