BELLOWS Russian patent published in 2003 - IPC

FIELD: construction engineering; erection of pipe lines; devices for compensation for vibration and temperature fluctuations. SUBSTANCE: body of bellows is made in form of narrow corrugations and at least two wide corrugations whose walls are engageable by convex and concave surfaces which are made in form of arcs of circle in longitudinal section. Ratio of height H between convex surface of wide corrugation and concave surface of narrow corrugation engageable with it to height h between convex and concave surfaces of narrow corrugation ranges from 0.5 to 0.8. Ratio of radius R of convex surface of wide corrugation to radius r of convex surface of narrow corrugation ranges from 2.6 to 5.0; height H is lesser than radius R . Wide corrugations are located over edges of bellows. EFFECT: enhanced serviceability of bellows. 2 cl, 2 dwg