| 摘要 |
A pipeline includes a pair of pipe sections with ends (20, 22), connected together by thread the pipe ends having axial and radial abutments lying beyond the ends of the thread, The abutments ere located to stabilize a nib sealing arrangement and to enhance the capacity to resist bending while using a shorter thread length. The shorter threads (24, 26) enable pipe ends of smaller wall thicknesses to be used. At the abutments, each pipe end has a nib (40A, 40B) that is deflected to enter a groove as the pipe ends mate. |
| 主权项 |
1. A pipe assembly that includes first and second pipe sections (12, 14) connected in series along a pipeline axis (16), said pipe sections having pipe ends (20, 22) with each pipe end having a pair of axially and radially-facing abutments (30, 34 and 32, 36, 66, 67 and 68, 69) wherein one abutment of each pipe section is engaged with an abutment of another pipe section, and each pipe end has a thread (24, 26) engaged with the thread of the other pipe section wherein said threads each lies between a pair of abutments, and wherein there are a pair of spaces (50, 52) between said pipe sections with each space lying between an end of said thread and an abutment of the same pipe section, wherein:
the axial length (L) of each of said threads is less than 60% of the distance (M) between two axially-facing abutments (30, 32) of the same pipe section. |
