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一、引言生理低压舱是一座多功能的实验装置,用来模拟高海拔大气环境(如图1),绝大多数生理实验在主舱内进行,而副舱则用作过渡舱。为了保证舱内人员的生理需求,主舱、副舱通过两组进风管道保持舱内一定的新鲜空气(新风)进入量,为了消除抽气及新风进入时产生的噪声,在管道上均装有消声装置,舱内气压高度的上升和下降是通过控制抽气量大于或小于新风量而达到的。
I. INTRODUCTION Physiological low-pressure cabin is a multi-functional experimental device used to simulate the high-altitude atmospheric environment (Figure 1). The vast majority of physiological experiments are carried out in the main cabin while the auxiliary cabin is used as a transitional cabin. In order to ensure the physiological needs of personnel in the cabin, the main cabin and the sub-cabin maintain a certain amount of fresh air (fresh air) entering the cabin through the two groups of air intake ducts. In order to eliminate the noise generated during air intake and fresh air entering, A muffler device, the cabin pressure rise and fall by controlling the exhaust volume is greater than or less than the amount of fresh air reached.