METHOD FOR FASTENING FLANGES TO EACH OTHER

PROBLEM TO BE SOLVED: To provide a method for fastening fluid devices to each other for tightly sealing a bolt hole as well, and reducing objection due to interference of nut with surrounding units while reducing cost.SOLUTION: As a bolt, a double-end stud 2 having a non-grooved side surface 2c at i...

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Bibliographic Details
Main Authors SAKAI ATSUSHI, TOTSUGI AKITO
Format Patent
LanguageEnglish
Japanese
Published 15.06.2017
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
JOINTS OR FITTINGS FOR PIPES
LIGHTING
MEANS FOR THERMAL INSULATION IN GENERAL
MECHANICAL ENGINEERING
PIPES
SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a method for fastening fluid devices to each other for tightly sealing a bolt hole as well, and reducing objection due to interference of nut with surrounding units while reducing cost.SOLUTION: As a bolt, a double-end stud 2 having a non-grooved side surface 2c at its central part is applied and the double-end stud 2 is inserted into a bolt hole 15 in such a way that the non-grooved side surface 2c is exposed from a flange surface 16 of at least one flange part 12f toward outside in an axial direction. Then, a ring-shaped elastic seal member 4 is placed between it and the flange surface 16 and nuts 3 are fastened to both end parts of the double-end stud 2. In this case, when the non-grooved side surface 2c is exposed from the flange surface 16, an open nut 30 is applied and fastened under a state in which an inner peripheral surface 4a of the elastic seal member 4 is being contacted with the non-grooved side surface 2c and in turn when the non-grooved side surface 2c is not exposed from the flange surface 16, a cap nut 31 is applied to fasten under a state in which the elastic seal member 4 is contacted with the flange surface 16 and the cap nut 31.SELECTED DRAWING: Figure 2C 【課題】ボルト孔を密封することはもとより、コストを抑制しつつナットが周辺機器と干渉する不具合を低減する流体機器同士の締結方法を提供する。【解決手段】ボルトとして、溝無し側面２ｃを中央部に有する両ネジボルト２を用い、溝無し側面２ｃが少なくとも一方のフランジ部１２ｆのフランジ面１６から軸方向外側へ露出するように、両ネジボルト２をボルト孔１５に通す。次に、リング状の弾性シール部材４をフランジ面１６との間に介在させてナット３を両ネジボルト２の両端部に締着する。この際に、溝無し側面２ｃがフランジ面１６から露出している場合には、貫通ナット３０を用い、弾性シール部材４の内周面４ａを溝無し側面２ｃに接触させた状態で締着する一方、溝無し側面２ｃがフランジ面１６から露出していない場合には、袋ナット３１を用い、弾性シール部材４をフランジ面１６及び袋ナット３１に接触させた状態で締着する。【選択図】図２Ｃ
Bibliography:Application Number: JP20170039540