JPS638491U

JPS638491U -

Info

Publication number: JPS638491U
Application number: JP10249886U
Authority: JP
Priority date: 1986-07-02
Filing date: 1986-07-02
Publication date: 1988-01-20
Also published as: JPH0414694Y2

Description

[Brief explanation of drawings]

第１図〜第５図は本考案に係る管端防食コアの
一実施例を示す説明図で、第１図イは一部切欠正
面図、ロはイのロ―ロ断面図、第２図は管端防食
コアを装着した内面ライニング管同士の接続状態
を示す断面図、第３図〜第５図は拡径部の詳細説
明図、第６図〜第１１図は従来の管端防食コアと
その問題点を説明する図面であり、第６図は一部
切欠正面図、第７図〜第１１図はその問題点の説
明図である。１１は管端防食コア、１２は内面ライニング管
、１４は鍔部、１７，２０は環状壁面、１８は胴
部、１９は拡径部。 1 to 5 are explanatory diagrams showing one embodiment of the pipe end anticorrosion core according to the present invention, in which FIG. 1A is a partially cutaway front view, B is a Ro-Ro sectional view of A, and FIG. is a cross-sectional view showing the connection between inner lining pipes equipped with pipe end anti-corrosion cores, Figs. 3 to 5 are detailed explanatory views of the enlarged diameter section, and Figs. 6 to 11 are conventional pipe end anti-corrosion cores. FIG. 6 is a partially cutaway front view, and FIGS. 7 to 11 are diagrams illustrating the problems. 11 is a tube end anticorrosion core, 12 is an inner lining tube, 14 is a collar, 17 and 20 are annular wall surfaces, 18 is a body portion, and 19 is an enlarged diameter portion.

Claims

[Scope of utility model registration request]

a flange having an annular wall surface in contact with the end surface of the tube and forming a male thread on the outer periphery that is continuous with the male thread at the end of the inner lining tube; and a body of a required length that is continuous with the flange and is attached to the inner surface of the tube. In the pipe end corrosion-protective core, the outermost diameter of the enlarged diameter part is slightly larger than the maximum inner diameter of the inner lining pipe, and the wall thickness thereof is set to be smaller than the maximum inner diameter of the inner lining pipe. What is claimed is: 1. A pipe end corrosion-protecting core having substantially the same dimensions as the tube end, and having an annular wall surface perpendicular to the axis formed at the tip thereof, and a convexly curved inner circumferential surface portion having a predetermined length from the tip.