PIPING JOINT STRUCTURE

The purpose of the present invention is to prevent an increase in a pressure loss by preventing a decrease in an inner diameter of a front end of a pipe connected to a pipe joint structure even though a larger axial force is obtained. The pipe joint structure includes: the pipe wherein a first passa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KONDO MASAAKI, INAGI SHUSUKE, KOMIYA KENJI, HAYASHI HIDETSUGU, YAMASHITA AKIRA
Format: Patent
Sprache:eng ; kor
Schlagworte:
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Beschreibung
Zusammenfassung:The purpose of the present invention is to prevent an increase in a pressure loss by preventing a decrease in an inner diameter of a front end of a pipe connected to a pipe joint structure even though a larger axial force is obtained. The pipe joint structure includes: the pipe wherein a first passage is formed and having an opening of the first passage and a first seal surface on an outer surface; a connector wherein a second passage is formed and having an opening of the second passage, a second seal surface in an inner surface, a male screw unit on an outer surface; a nut having a female screw unit screw-coupled with the male screw unit, screw coupling the female screw unit with the male screw unit while the first seal surface comes into contact with the second seal surface, and connecting the pipe and the connector. In a side sectional view of the pipe joint structure including an axis of the second passage, a male screw unit section wherein the male screw unit is formed and a seal section where the first seal surface comes into contact with the second seal surface are separated in an axial direction of the second passage. 본 발명의 과제는 보다 큰 축력을 확보하는 경우라도, 접속되는 파이프의 선단부의 내경의 축소를 억제하여, 압력 손실의 증대를 억제하는 것이다. 배관용 조인트 구조는 제1 유로가 형성됨과 함께 제1 유로의 개구를 갖고, 외표면에 제1 시일면을 갖는 파이프와, 제2 유로가 형성됨과 함께 제2 유로의 개구를 갖고, 내표면에 제2 시일면을 갖고, 외표면에 수나사부를 갖는 커넥터와, 수나사부와 나사 결합하는 암나사부를 갖고, 제1 시일면과 제2 시일면을 접촉시킨 상태에서 수나사부에 암나사부가 나사 결합되고 파이프와 커넥터를 접속하는 너트를 구비한다. 배관용 조인트 구조를 제2 유로의 축을 포함하는 측단면도에서 보았을 때에, 수나사부가 형성되는 수나사부 영역과, 제1 시일면과 제2 시일면이 접하는 시일 영역이, 제2 유로의 축방향으로 이격되어 있다.