Double-layer sliding type chemical pipeline safety cover

The utility model relates to the technical field of chemical pipeline tools, in particular to a double-layer sliding type chemical pipeline safety cover. The utility model provides a double-layer sliding type chemical pipeline safety cover which is characterized in that an inner cylinder is sleeved on a chemical pipeline and wraps a connecting end, so that a closed cavity is formed; the inner cylinder is sleeved with the outer cylinder, and the inner cylinder is locked; the sealing cavity is filled with water and other solvents, so that the connecting end is subjected to water sealing; if the connecting end leaks, the chemical can be dissolved into the solvent and cause the change of the solvent, so that the PH detector is controlled to monitor the PH value of the solvent in the closed cavity, and once the change occurs, the leakage occurs; the safety cover structure is suitable for detecting liquid and gas leakage, and is good in universality. 本实用新型涉及化工管道用具技术领域，具体涉及一种双层滑动式化工管道安全罩；本实用新型提供了一种双层滑动式化工管道安全罩，采用内筒套