Anti-loosening top cover for low-pressure pressure vessel

The utility model relates to the technical field of anti-loosening top covers, in particular to an anti-loosening top cover for a low-pressure pressure container, which improves the operation convenience during fixing or opening, reduces the operation complexity of personnel, improves the working efficiency and improves the anti-loosening reliability. Comprising a container tank and a connecting pipe, the device further comprises a locking device, a sleeve, a top cover and two sets of positioning holes, the sleeve is installed at the top end of the container tank and covers the connecting pipe, the bottom end of the top cover covers an opening in the top end of the connecting pipe, the two sets of positioning holes are formed in the outer side walls of the left end and the right end of the sleeve respectively, and the locking device is arranged in the top cover. And the locking device fixes the top cover through the two groups of positioning holes. 本实用新型涉及防松动顶盖的技术领域，特别是涉及用于低压压力容器的防松动顶盖，其提高固定或开启时操作的便利性，降低人员操作复