JPS62108689U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の無推力伸縮継手の一実施例を
示す断面図、第２図は第１図の―線断面図、
第３図は従来例を示す図である。 図中、１ａ，１ｂは配管、３は継手部、７ａ，
７ｂは推力受つば部、８は外筒、９ａ，９ｂは端
板、１４ａ，１４ｂは圧力室、１５ａ，１５ｂは
導通孔である。 Fig. 1 is a sectional view showing an embodiment of the thrustless expansion joint of the present invention, Fig. 2 is a sectional view taken along the line - - in Fig. 1,
FIG. 3 is a diagram showing a conventional example. In the figure, 1a and 1b are pipes, 3 is a joint, 7a,
7b is a thrust receiving collar, 8 is an outer cylinder, 9a and 9b are end plates, 14a and 14b are pressure chambers, and 15a and 15b are through holes.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 同軸上に配置された配管を伸縮自在に接合する
伸縮継手において、両配管の端部を軸方向に伸縮
移動自在に接合する継手部を設け、該継手部の両
側の配管外周に、その配管内断面積と同一面積の
推力受つば部を設け、該推力受つば部を包囲する
と共に両配管に対して移動自在な外筒を設け、該
外筒の両側端板と推力受つば部間で圧力室を形成
すると共に、両配管に、その圧力室内に配管内流
体を供給する導通孔を設けたことを特徴とする無
推力伸縮継手。 In an expansion joint that expands and contracts coaxially arranged piping, a joint part is provided that joins the ends of both pipes so that they can expand and contract in the axial direction. A thrust-receiving flange having the same area as the cross-sectional area is provided, and an outer cylinder is provided that surrounds the thrust-receiving flange and is movable relative to both piping, and the pressure is reduced between both end plates of the outer cylinder and the thrust-receiving flange. A thrustless expansion joint characterized in that a chamber is formed and both pipings are provided with communication holes for supplying fluid in the piping into the pressure chambers.