Pipeline connecting structure

The utility model relates to a pipeline connecting structure. The adapter sleeve subassembly provides fastening power to the connecting pipe, sealed face roof pressure cooperation in the fitting surface that makes the connecting pipe upper end and the mounting hole that connects the body, sealed face with one in the fitting surface is the taper surface, another is the arcwall face, form the line contact when making sealed face with the fitting surface contact, just can guarantee the sealing load that can bear under less mounting torque, reduced and connected the mounting torque between body and the connecting pipe, adopt the line contact between two sealed fitting surfaces, the butt joint body requires lowerly with the manufacturing accuracy of connecting pipe, the problem of current pipeline connecting structure adopt that cone combined with is sealed to need the technique that manufacturing cost is high that higher manufacturing accuracy caused is solved. 本实用新型涉及种管路连接结构。连接套组件对连接管提供紧固力，使连接管上端部的配合面与接头本体的安装孔中的