低氧文物实验舱的环境控制方法研究

The Research on Methods Control Mionectic Environment of the Cabin for Cultural Relic Study

提出用于考古现场的低氧文物实验舱,在舱内搭建低氧富氮环境用于文物的存储和现场研究。对抽气-充气以及充气-排气两种舱内环境控制方式进行了对比。根据管道一维定常等熵理论建立了系统的流体模型。以调节舱内氧气浓度为目标,同时保证舱内压力的变化趋势,综合舱体设计考虑得出了合适的过程控制方式。最终实验表明,设计过程在较短时间内使实验舱达到了误差范围内目标结果。控制过程可靠,操作简便,设备在考古现场具备可行的操作性和实用性。

It presents an experimental cabin with low oxygen concentration,which is used to deposit the cultural relic in the field of archaeology.Making the comparison of the two different ways that control the mionectic environment,pump air-inflate and exhaust air-inflate.Then built the fluid model base on the One-dimensional Steady Isentropic Theory.Adjusting the oxygen co-centration as the goal,meanwhile ensuring the cabin’s pressure changing in a stable and controlled way.Integrating with the considerations of design derived a suitable process control method.The finally experiment results indicate the process can reach the target within the error range in a short time.The whole control process is reliable and easy to operate,the equipment is feasible and practical.