Sealing device for two ends of pipeline of pressure testing machine

The utility model discloses a sealing device for two ends of a pipeline of a pressure testing machine, which comprises a mounting frame, a fixing frame is arranged on the mounting frame, a placing mechanism used for placing the pipeline is arranged in the mounting frame, the placing mechanism comprises two testing pipes arranged on the mounting frame, placing cylinders are arranged on the testing pipes, sealing rings are arranged in the placing cylinders, and the two ends of the pipeline are sealed by the sealing rings. Two air cylinders are installed at the top in the fixing frame, the output ends of the two air cylinders are jointly and fixedly connected with a movable plate connected with the adjacent testing pipe, and the other testing pipe is fixedly connected with the installation frame. Due to the arrangement of the placing mechanism and the adoption of a vertical pipeline sealing mode, the number of horizontally-sealed driving equipment can be reduced, the production cost of the device can be reduced,