High-temperature dynamic sealing device for combustible explosive gas

The invention provides a high-temperature dynamic sealing device for combustible explosive gas, and belongs to the technical field of mechanical sealing. The device comprises a front flange, a weldedcorrugated pipe, graphite bearings, intermediate rings, guide rods and a rear flange. According to the device, a copper gasket seal of the front flange is arranged to be used for being connected witha high-temperature seal of a combustible explosive gas device, so that the combustible explosive gas is prevented from being leaked; and the high-temperature dynamic sealing function is realized by the characteristics of compressible elongation, high temperature resistance and the like of the welded corrugated pipe. The high-temperature dynamic sealing device has the advantages of being simple andreasonable in structure, low in leakage rate, high in temperature resistance, high in pressure resistance, high in corrosion resistance, strong in mechanical performance and long in service life. 种用于可燃易爆气体的高温动密封装置，属于机械密封技术领域。本