一种新型耐高温密封装置的设计

摘要

针对某型产品验收试验的高温密封问题（介质最高温度为300℃），在原有试验设备的基础上，设计一种新型耐高温密封装置，该装置主要由固定座、上下压紧螺盖和密封圈组组成，其中，关键零件密封圈材料选用一种可耐320℃高温的特种改性聚四氟乙烯材料。经实践检验，证明设计的密封装置起到良好的高温密封效果。%Aimed at the problem of high temperature sealing for a certain type of product acceptance test ( medium max⁃imum temperature of 300 ℃) , a new type of high⁃temperature sealing device was designed based on the original test equipment. The device was mainly composed of mounts,up/down clamping screw cap and sealing ring.The sealing ring was the key part,which was made of a new special modified PTFE material that can withstand a temperature of 320 ℃. The designed high temperature sealing device was proved to have a good high⁃temperature sealing effect by practice test.