| 摘要 |
A ventilation pipeline includes ventilation pipes the ends of which are equipped with elements for connection to each other with use of sealing element made of elastic material. The tubes have round cross section, and one end of the tube has conical inner surface, and the other end – conjugate conical outer surface depth of which is determined depending on the length of the tube and the pressure of air flow in it, besides that the tightening element is arranged as permanent through application of a layer of elastic material to the inner conical surface of the pipe. |
