电解槽用新型节能打壳气缸系统设计

Design of a New Type of Energy Saving Crust Breaker Cylinder System for Electrolytic Cell

打壳气缸作为电解铝生产过程中必不可少的重要设备,同时也是电解铝行业中高耗能的部分。目前,打壳气缸气动系统存在两个问题需要解决,一是工作环境温度高、磁场强,易造成电磁换向阀的工作稳定性变差;二是待工期间的供气压力高,造成打壳气缸因密封不良引起的能源泄漏加剧。为提高打壳气缸系统工作的稳定性和减少压缩空气的消耗量,论文采用带延时环节的纯气动回路替代电磁力换向,通过减少电磁铁的数量来提高气动系统工作的稳定性;采用减压模块,降低待工期间的供气压力来减少压缩空气的泄漏量。经实验证明该新型打壳气缸气动系统,提高了系统工作的稳定性,明显地降低了系统的耗气量。

In the electrolytic aluminum industry,the crust breaker cylinders are not only essential devices but also the main parts of high energy consumption. At present,there are two problems need to be solved in the crust breaker cylinder pneumatic system. Firstly,due to the high temperature and strong magnetic fields in the working environment,the stability of the electromagnetic valve becomes worse; secondly,in idle time the energy leakage of the crust breaker system caused by poor sealing is increased because of the high pressure compressed air. In this paper,in order to improve the stability and reduce the consumption of compressed air in the crust breaker cylinder system,the pure pneumatic circuit with time delay valve is used to replace the electromagnetic valve,and the stability of the pneumatic system is improved by reducing the number of the electromagnet valve; and the decompression module is used to reduce the consumption of compressed air. The experimental results show that the stability of the new crust breaker pneumatic system is improved and the air consumption is reduced significantly.