JPH0165493U

JPH0165493U -

Info

Publication number: JPH0165493U
Application number: JP1987156720U
Authority: JP
Priority date: 1987-10-15
Filing date: 1987-10-15
Publication date: 1989-04-26

Description

[Brief explanation of the drawing]

第１図ａはこの考案の一実施態様を示す縦断面
図、第１図ｂは電位を示す図、第２図はパイプラ
インのＢ部における電流分布図、第３図ａは従来
のパイプラインの一例を示す縦断面図、第３図ｂ
は電位を示す図である。図面において、Ａ……パイプライン、１……内管、２……外管
、３……電源、４……第１導線、５……第２導線
、６，６……電気絶縁管、７，７……短絡部、８
……給電機構、９……第１導線、１０……第２導
線、１１……絶縁および断熱層、１２……輸送流
体、１３……電気絶縁管、１４……給電部、１５
……接続部分、１６……短絡部。 Figure 1a is a longitudinal cross-sectional view showing one embodiment of this invention, Figure 1b is a diagram showing potential, Figure 2 is a current distribution diagram in section B of the pipeline, and Figure 3a is a conventional pipeline. A vertical cross-sectional view showing an example of Fig. 3b
is a diagram showing potential. In the drawings, A...Pipeline, 1...Inner tube, 2...Outer tube, 3...Power source, 4...First conductor, 5...Second conductor, 6, 6...Electrical insulation tube, 7 , 7... Short circuit part, 8
... Power feeding mechanism, 9... First conducting wire, 10... Second conducting wire, 11... Insulating and heat insulating layer, 12... Transport fluid, 13... Electrical insulation tube, 14... Power feeding unit, 15
...Connection part, 16...Short circuit part.

Claims

[Claims for Utility Model Registration] (1) An inner tube made of a ferromagnetic material for transporting fluid, and an inner tube provided outside the inner tube at a predetermined distance from the inner tube and concentrically with the inner tube. an outer tube made of a ferromagnetic material, and a short-circuit portion for electrically short-circuiting the inner tube and the outer tube at their ends;
One end is connected to the inner tube by a conducting wire for applying an alternating current to the inner tube and the outer tube to simultaneously generate heat in the inner tube and the outer tube to heat the fluid transferred within the inner tube. and a power supply mechanism consisting of a power source connected to the outer tube at the other end of the double-tube electric direct heating pipeline, wherein the short-circuit portion is provided at both ends of the pipeline, and the power supply mechanism is connected to the pipe. A double-pipe electric direct heating pipeline characterized by being installed in the middle of the line. (2) The double-pipe electric direct heating pipeline according to claim 1, wherein the power feeding mechanism is provided in the center of the pipeline.