| 摘要 |
A flowline branch structure has at least one inner branch assembly comprising an inner flowline branch 30 and at least one inner flowline pipe 26 attached to and communicating with the inner flowline branch 32, 36. At least one outer branch assembly of the flowline branch structure comprises an outer branch housing disposed around the inner flowline branch 32, 36 and at least one outer pipe disposed around the inner flowline pipe 26 and attached to the outer branch housing.A generally annular space is defined between the inner and outer branch assemblies. At least one wiring element 28 including an electrical heating element is disposed in the sealed space on an outer side of the inner branch assembly. The, or each, wiring element extends in one continuous length across an interface (fig.12, 54) between the inner flowline pipe 26 and the inner flowline branch 32, 36. This reduces the number of connections necessary to create the flowline branch structure. |
