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针对阀体内腔结冰造成事故的实例，分析了驱动装置被损坏的原因，同时介绍了－20℃环境温度条件下对驱动装置进行的推力试验。提出阀门和驱动装置的制造单位、电动阀门的使用单位通过事故应接受的教训中改进方向，为管道的安全运行创造条件。
Aiming at the example of the accident caused by the ice in the valve cavity, the reason of the damage of the driving device is analyzed. At the same time, the thrust test of the driving device under -20 ℃ ambient temperature is introduced. Proposed valve and drive unit manufacturing units, the use of electric valve unit should be accepted through the accident to improve the direction of the lessons learned, to create conditions for the safe operation of the pipeline.