关键词: S Zorb装置, 程控阀, 故障分析, 振动, 开关超时, 卡涩, 磨损

Abstract:

The program control valve of S Zorb lock hopper is used to isolate the high-pressure hydrogen and low-pressure oxygen containing environment. The large temperature difference and pressure difference, frequent switching between hydrogen and oxygen environment, severe operating conditions, and high switching action frequency, it easy to occur such as switch timeout, wear, jamming, internal leakage and other problems. High failure rate, high maintenance cost and high risk have always been the thorny problems affecting the long-term operation of the unit. In this paper, the above problems are deeply analyzed and optimized. Through the reduction of the pressure relief hole of the instrument air, the transformation of the valve structure, the use of two position five-way switching mode and the use of fork cylinder valves, the frequent faults of the program control valves are effectively solved. The shortest service life of the valves is increased from 7 months in the previous cycle to 18 months in this cycle. Most valves have been in normal use for more than 31 months. It effectively prevents the internal leakage of the valve. Save about 6 tons adsorbent every year, and saved more than 1.2 million yuan of adsorbent cost every year.

Key words: S Zorb unit, program control valves, fault analysis, vibration, switch timeout, jamming, wear