Auxiliary sealing type butt joint positioning accessory for multi-specification special-shaped pipelines

The invention discloses an auxiliary sealing type butt joint positioning accessory for multi-specification special-shaped pipelines. The auxiliary sealing type butt joint positioning accessory comprises a pipeline body, a flow guide pipe, a liquid cavity and a communication channel, wherein the flow guide pipe is arranged between the inner sides of the ends of the pipeline body in a penetrating mode, and a fixing ring is fixedly arranged on the outer wall of the middle of the flow guide pipe. An outer ring is fixed to the outer wall of the end of a positioning sleeve, and a threaded sleeve and a rotating ring are rotationally connected to the positioning sleeve in the outer ring. A connecting pipe is fixed between the outer walls of the outer ring in a penetrating mode, and a rotating cap is arranged on the outer wall of the middle of the connecting pipe through a bearing. A first bolt rod is arranged in the threaded sleeve in a penetrating mode, and a pressing block is hinged to the lower end of the first bo