| 摘要 |
The present invention relates to a screw connection device for connecting two pipes (1,2). The present invention relates to a screw connection device including two pipes having a flange type pipe end part (3, 4), a bolt (5), a nut (6), and a spacer (7). The nut (6) includes an accommodation space (8). The space is stably fixed to the inside of the accommodation space (8). The space (7) stably maintains a first pipe (1) in the nut (6). A second pipe (2) can be combined with the nut (6) by the bolt (5). The outer surface of the spacer (7) has at least one cylindrical section. The space (7) has a first end surface (10) and a second end surface (11). A first protrusion part (12) combined with the nut (6) is provided for the space (7) in the accommodation space (8). Therefore, the space (7) is stably accommodated in the accommodation space (8). |
