Deflation pipe compensation structure for directly-buried hot water pipeline

The utility model discloses a compensation structure for a vent pipe of a directly buried hot water pipeline, which comprises a hot water pipeline, a vent pipe arranged on the hot water pipeline and a first protection pipe buried in soil and sleeved outside the vent pipe, and the inner diameter of the first protection pipe is larger than the outer diameter of the vent pipe. In order to solve the technical problem that a weld joint cracks and leaks due to the fact that the connecting position of the deflation pipe and a buried hot water finished product heat preservation pipe is stressed, the deflation pipe compensation structure for the directly-buried hot water pipeline can eliminate horizontal displacement of the deflation pipe and protect the weld joint at the connecting position of the deflation pipe and a main pipe. 本实用新型公开了一种用于直埋热水管道放气管补偿结构，包括热水管道，以及设于所述热水管道上的放气管，还包括埋于土壤内且套设于所述放气管外的第一保护管，所述第一保护管的内径大于所述放气管的外径。针对放气管和埋地热水成品保温管连接处受力导致焊缝开裂泄露的技术问题，本实用新型提供了一种用于直埋热水管道放气管补偿结构，它能消纳了放气管的水平位移，保护了放气管与主管之间连接处的焊缝。