| 摘要 |
oil and gas industry, well- head equipment. SUBSTANCE: suspension of tubing string is joined to pipe head and adapter flange. It has frame. Lower package of seals is made of supporting bushing and elastic ring, middle package of seals is composed of supporting rings, sealing H-shaped rings, two-way wedge-type expanding bushing, lower and upper wedge-type expanding rings. Upper package of seals consists of supporting rings, sealing H-shaped ring, upper and lower wedge-type expanding rings. Suspension frame has ring cavities on outside in point of mounting of sealing H-shaped rings. Number of supporting rings in upper and middle packages of seals should be two as minimum. EFFECT: invention ensures multiple usage of sealing rings if tubing string is arranged anew, increased operational reliability of suspension, reduced cost of usage of suspension. 1 cl, 1 dwg |
