Three-way switch for modularized cabin pressure regulation subsystem

The invention relates to the technical field of aviation cabin pressure regulation, in particular to a three-way switch for a modularized cabin pressure regulation subsystem. According to the modularized three-way switching mechanism, the reliability of gas circuit switching and sealing parts is improved. The mounting part is flexible, the assembly manufacturability is good, quick dismounting and replacement can be realized in an external field, and the reliability of gas path switching and sealing is improved. The modular structure enables installation parts to be more flexible, the handle can be pulled within the range of 40 degrees to switch three kinds of gas circuits, and therefore installation space is not limited. 本发明涉及航空座舱压力调节技术领域，尤其涉及一种模块化座舱压力调节子系统用三通开关。本发明模块化三通开关机构，提高气路切换及密封部位的可靠性。安装部位灵活，装配工艺性良好，能够在外场实现快速拆换，提高气路切换及密封的可靠性。模块化结构使得安装部位更灵活，手柄在40°范围内扳动即可切换三种气路，使得安装空间不受限制。