WO2013042575A1 - 管継手 - Google Patents
管継手 Download PDFInfo
- Publication number
- WO2013042575A1 WO2013042575A1 PCT/JP2012/073123 JP2012073123W WO2013042575A1 WO 2013042575 A1 WO2013042575 A1 WO 2013042575A1 JP 2012073123 W JP2012073123 W JP 2012073123W WO 2013042575 A1 WO2013042575 A1 WO 2013042575A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- joint
- screw member
- gasket
- joint members
- pipe joint
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
- F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
- F16L19/0286—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and being formed as a flange
Definitions
- the present invention relates to a pipe joint, and more particularly to a pipe joint suitable for applications requiring extremely high cleanliness, such as for manufacturing semiconductors.
- JP 2010-96329 A (FIG. 5)
- fine particles may be generated when the male screw member and the female screw member are screwed together.
- the fine particles enter the fluid passage, and high cleanliness can be ensured. There is a possibility of disappearing.
- An object of the present invention is to provide a pipe joint capable of preventing fine particles generated when a male screw member and a female screw member are screwed together from entering a fluid passage and maintaining high cleanliness. .
- the pipe joint according to the present invention includes a pair of tubular joint members, and an annular gasket interposed between the butted end surfaces of both joint members, and a male thread member provided on one of the joint members;
- the male screw member is provided with a cover portion that covers the outer peripheral surface of the butted portion of both joint members It is.
- the male screw member and the female screw member are screwed together, fine particles may be generated.
- the male screw member is provided with a cover portion that covers the outer peripheral surfaces of the butted portions of both joint members, the fine particles are It is prevented from entering the fluid passage, and high cleanliness can be maintained.
- Each joint member has the same shape consisting of a cylindrical sleeve body whose inner periphery serves as a fluid passage and a flange integrally provided at the abutting end thereof, and the sleeve bodies are opposed to each other via a gasket.
- the end faces of the flanges protrude from the sleeve body and are opposed to each other via an overtightening prevention gap.
- the overtightening prevention gap is set to almost zero when proper tightening is performed, and when further tightening is performed, the resistance to tightening is set to be large so that only fine particle intrusion can be prevented. It can also contribute to prevention of overtightening.
- the male screw member is provided with the cover portion that covers the outer peripheral surface of the butt portion of both joint members, and therefore may occur when the male screw member and the female screw member are screwed together. Fine particles are prevented from entering the fluid passage, and high cleanliness can be maintained.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a pipe joint according to the present invention.
- FIG. 2 is a perspective view showing a male screw member used in the pipe joint according to the present invention.
- FIG. 1 shows an embodiment of a pipe joint according to the present invention.
- the pipe joint (1) includes first and second tubular joint members (2) and (3) having fluid passages communicating with each other. And an annular gasket (4) interposed between the joint members (2) and (3), and a retainer (5) which holds the gasket (4) and is held by the first joint member (2)
- Each joint member (2) (3) is composed of a cylindrical sleeve body (11) (13) having an inner periphery serving as a fluid passage, and a flange (12) (14) integrally provided at the abutting end portion thereof. And have the same shape.
- the gasket (4) is made of a metal such as a nickel alloy, and this is plastically deformed between the butted end surfaces of both joint members (2) and (3) so as to obtain a sealing property.
- An annular gasket pressing protrusion (11a) (13a) is provided on the end face of the sleeve body (11) (13) of each joint member (2) (3).
- the inner diameter of the gasket (4) is made equal to the inner diameter of each joint member (2) (3).
- the gasket (4) has a shape having a smooth inner peripheral surface and a stepped outer peripheral surface by providing a large diameter portion (4a) having an outer diameter larger than that of the other portion and equal to the inner diameter at the right end portion. ing.
- the retainer (5) has a stepped portion corresponding to the stepped outer peripheral surface of the gasket (4) by providing a large diameter portion (5a) corresponding to the large diameter portion (4a) of the gasket (4) on the inner peripheral surface.
- the shape has an inner peripheral surface.
- the gasket (4) and the retainer (5) are fitted so that the large-diameter portion (4a) of the gasket (4) fits within the large-diameter portion (5a) of the retainer (5).
- the sleeve bodies (11) and (13) face each other via the gasket (4), and the flanges (12) and (14) face each other with their butt end faces protruding from the sleeve bodies (11) and (13), preventing overtightening. It is made to oppose through the use gap (G).
- Recesses (12a) and (14a) for accommodating the retainer (5) are formed on the abutting end faces of the flanges (12) and (14).
- the retainer (5) holds the gasket (4) and is fitted into the recesses (12a) and (14a) of the flanges (12) and (14), and a metal wire having a circular cross section is formed in a C shape.
- the snap ring (8) holds the first joint member (2).
- the male screw member (6) projects from the right end surface (butt end surface) of the main body (15) to the right (axial direction) to the right (axial direction). 2) A cylindrical cover part (16) covering the outer peripheral surface of the butting part of (3), a male thread part (17) provided on the outer periphery of the right end part (butting end part) of the main body (15), and a main body (15 ) And a hexagonal engagement portion (18) provided on the outer periphery of the left end portion (counter end portion).
- the male screw member (6) is fitted to the first joint member (2) from the left side, and the right side of the main body (15) abuts the left side of the flange (12) of the first joint member (2) from the left side. It has been made.
- the female screw member (7) is called a cap nut and is fitted to the second joint member (3) from the right side.
- a female screw portion (7a) that is screwed to the male screw portion (17) of the male screw member (6) is formed on the inner periphery of the left end portion of the female screw member (7).
- An inward flange (7b) is formed at the right end of the female thread member (7), and the inward flange (7b) is fitted around the sleeve body (13) of the second joint member (3).
- the second joint member (3) is brought into contact with the right surface of the flange (12) from the right side.
- the inner diameter of the cover part (16) of the male thread member (6) is slightly larger than the outer diameter of the flange (12) of the first and second joint members (2) and (3). It is made slightly smaller than the inner diameter of (7).
- a washer (9) for preventing co-rotation is interposed between the flange (14) of the second joint member (3) and the inward flange (7a) of the female screw member (7).
- FIG. 1 shows a state in which the male screw member (6) and the female screw member (7) are tightened by hand (the state before being completely tightened), and the tips of the gasket pressing projections (11a) and (13a) are shown. Is in contact with the gasket (4). After that, when tightened properly (predetermined torque value or predetermined nut rotation amount), the gasket pressing protrusions (11a) (13a)) bite into both sides of the gasket (4), so that strong sealing performance is obtained. As well as being secured, the portions of the sleeve bodies (11) and (13) where the gasket pressing protrusions (11a) and (13a) are not provided are in close contact with both surfaces of the gasket (4), thereby further improving the sealing performance. .
- the overtightening prevention gap (G) between the butted end faces of the flanges (12) and (14) is small, but is kept slightly.
- This overtightening prevention gap (G) is set to be almost zero when proper tightening is performed.In the proper tightening state, the butt end faces of the flanges (12) and (14) The force is not exerted or is not exerted. When further tightening is performed, the overtightening prevention gap (G) becomes negative, and forces are applied to each other between the butted end faces of the flanges (12) and (14), thereby increasing resistance to tightening. This prevents excessive tightening.
- the flanges (12) and (14) are made to face each other via the overtightening prevention gap (G), and the cover portion of the external thread member (6) Since the slight overtightening prevention gap (G) is closed by (16), a double intrusion prevention mechanism is configured, and the possibility that fine particles intrude is greatly reduced.
- the pipe joint of the present invention can prevent fine particles generated when the male screw member and the female screw member are screwed together from entering the fluid passage, it can be applied to various applications that require high cleanliness. It can contribute to ensuring high cleanliness.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims (1)
- 互いに連通する流体通路を有している一対の管状継手部材と、両継手部材の突合わせ端面の間に介在させられる円環状ガスケットとを備えており、いずれか一方の継手部材に設けられたおねじ部材と他方の継手部材に設けられためねじ部材とによって継手部材同士が結合される管継手において、
おねじ部材に、両継手部材の突き合わせ部外周面を覆うカバー部が設けられていることを特徴とする管継手。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SG11201400737YA SG11201400737YA (en) | 2011-09-22 | 2012-09-11 | Pipe joint |
US14/346,096 US9435470B2 (en) | 2011-09-22 | 2012-09-11 | Pipe joint |
CN201280046172.1A CN104011447B (zh) | 2011-09-22 | 2012-09-11 | 管接头 |
KR1020147010244A KR101658295B1 (ko) | 2011-09-22 | 2012-09-11 | 관 조인트 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-206749 | 2011-09-22 | ||
JP2011206749A JP5875306B2 (ja) | 2011-09-22 | 2011-09-22 | 管継手 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013042575A1 true WO2013042575A1 (ja) | 2013-03-28 |
Family
ID=47914346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/073123 WO2013042575A1 (ja) | 2011-09-22 | 2012-09-11 | 管継手 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9435470B2 (ja) |
JP (1) | JP5875306B2 (ja) |
KR (1) | KR101658295B1 (ja) |
CN (1) | CN104011447B (ja) |
SG (1) | SG11201400737YA (ja) |
TW (1) | TWI568960B (ja) |
WO (1) | WO2013042575A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019163832A (ja) * | 2018-03-20 | 2019-09-26 | 株式会社フジキン | 管継手 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150377390A1 (en) * | 2014-06-26 | 2015-12-31 | Kabushiki Kaisha Toshiba | Piping component and pipe |
WO2016014767A1 (en) * | 2014-07-24 | 2016-01-28 | Ags I-Prop, Llc | Universal tube fitting adaptable for different sized tubes |
BR112017013958B1 (pt) | 2014-12-31 | 2022-04-12 | Saint-Gobain Performance Plastics Corporation | Conjuntos de transferência de fluido moldados que têm pressões de trabalho e pressões de ruptura aumentadas |
US10808871B2 (en) | 2016-12-13 | 2020-10-20 | Cantex International, Inc. | High pressure flowline union |
KR101950739B1 (ko) * | 2017-05-29 | 2019-04-29 | (주)필택산업 | 관이음 커플러 |
WO2019009049A1 (ja) * | 2017-07-04 | 2019-01-10 | 日本ピラー工業株式会社 | 流体機器の接続構造 |
JP6488035B1 (ja) * | 2018-03-08 | 2019-03-20 | 大基産業株式会社 | 管接続構造 |
JP7050293B2 (ja) * | 2018-03-30 | 2022-04-08 | 株式会社フジキン | 管継手 |
KR102000670B1 (ko) * | 2018-04-11 | 2019-07-16 | 케이제이바스컬렉션 주식회사 | 길이 조절이 가능한 배관 연결 구조 |
CN111120655B (zh) * | 2018-10-30 | 2021-11-30 | 高铁工业股份有限公司 | 一种管材相接的防水结构 |
CN110829349A (zh) * | 2019-11-18 | 2020-02-21 | 武汉博腾电力工程有限公司 | 一种电缆管道连接结构 |
CN110848455A (zh) * | 2019-11-30 | 2020-02-28 | 嘉雷特(天津)科技有限公司 | 一种便于使用且具有防冻功能的电磁阀 |
WO2021182398A1 (ja) * | 2020-03-10 | 2021-09-16 | 株式会社フジキン | 管継手 |
CN112343173A (zh) * | 2020-11-03 | 2021-02-09 | 曹强 | 一种具有防火功能的保温形钢结构 |
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US5060987A (en) * | 1990-03-14 | 1991-10-29 | Vemco Corporation | Torsion isolation fitting |
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JPH0781656B2 (ja) * | 1989-06-30 | 1995-09-06 | エフ・エム・シー・コーポレーション | 管継手密封装置 |
US6547255B1 (en) * | 1999-10-05 | 2003-04-15 | Pamargan Products Limited | Fluid seals |
JP2007278341A (ja) * | 2006-04-04 | 2007-10-25 | Matsushita Electric Ind Co Ltd | 配管接続具および基板処理装置 |
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DE3105395A1 (de) * | 1981-02-14 | 1982-11-04 | Leonhard Schleicher Südmo-Armaturenfabrik GmbH, 7081 Riesbürg | "metallisch dichtende rohrverbindung, insbesondere fuer die lebensmittel- und pharmaindustrie" |
US5131692A (en) * | 1989-06-30 | 1992-07-21 | Fmc Corporation | Pipe connector with threaded seal in nonthreaded cavity |
US5066051A (en) * | 1990-01-23 | 1991-11-19 | Cajon Company | Anti-twist coupling assembly with biasing means |
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LU90201B1 (de) * | 1998-01-21 | 1999-07-22 | Ceodeux Ultra Pure Equipment T | Anschlussstutzen mit Dichtwulst |
US6685237B1 (en) * | 2002-11-27 | 2004-02-03 | Eric Robinson | Torque resistant retrofit for compression metal face seals |
US9068679B2 (en) * | 2008-04-22 | 2015-06-30 | Fujikin Incorporated | Fluid coupling and retainer for fluid coupling |
JP5213636B2 (ja) | 2008-10-20 | 2013-06-19 | 東京エレクトロン株式会社 | 継手用シール装置およびこれを備えた流体継手 |
-
2011
- 2011-09-22 JP JP2011206749A patent/JP5875306B2/ja active Active
-
2012
- 2012-09-11 WO PCT/JP2012/073123 patent/WO2013042575A1/ja active Application Filing
- 2012-09-11 SG SG11201400737YA patent/SG11201400737YA/en unknown
- 2012-09-11 CN CN201280046172.1A patent/CN104011447B/zh active Active
- 2012-09-11 US US14/346,096 patent/US9435470B2/en active Active
- 2012-09-11 KR KR1020147010244A patent/KR101658295B1/ko active IP Right Grant
- 2012-09-20 TW TW101134388A patent/TWI568960B/zh active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US3840257A (en) * | 1972-04-24 | 1974-10-08 | Locking Devices Corp | Sealed connector |
JPH0781656B2 (ja) * | 1989-06-30 | 1995-09-06 | エフ・エム・シー・コーポレーション | 管継手密封装置 |
US5060987A (en) * | 1990-03-14 | 1991-10-29 | Vemco Corporation | Torsion isolation fitting |
JPH04228989A (ja) * | 1990-04-23 | 1992-08-18 | Vemco Corp | 管状部分をシールするための方法及びその装置 |
US6547255B1 (en) * | 1999-10-05 | 2003-04-15 | Pamargan Products Limited | Fluid seals |
JP2007278341A (ja) * | 2006-04-04 | 2007-10-25 | Matsushita Electric Ind Co Ltd | 配管接続具および基板処理装置 |
Cited By (1)
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---|---|---|---|---|
JP2019163832A (ja) * | 2018-03-20 | 2019-09-26 | 株式会社フジキン | 管継手 |
Also Published As
Publication number | Publication date |
---|---|
JP5875306B2 (ja) | 2016-03-02 |
US20140312617A1 (en) | 2014-10-23 |
CN104011447B (zh) | 2016-07-06 |
JP2013068269A (ja) | 2013-04-18 |
SG11201400737YA (en) | 2014-06-27 |
KR101658295B1 (ko) | 2016-09-22 |
KR20140062166A (ko) | 2014-05-22 |
TWI568960B (zh) | 2017-02-01 |
CN104011447A (zh) | 2014-08-27 |
US9435470B2 (en) | 2016-09-06 |
TW201333351A (zh) | 2013-08-16 |
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