JP2016138609A5 - - Google Patents

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Publication number
JP2016138609A5
JP2016138609A5 JP2015014295A JP2015014295A JP2016138609A5 JP 2016138609 A5 JP2016138609 A5 JP 2016138609A5 JP 2015014295 A JP2015014295 A JP 2015014295A JP 2015014295 A JP2015014295 A JP 2015014295A JP 2016138609 A5 JP2016138609 A5 JP 2016138609A5
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JP
Japan
Prior art keywords
ball
trunnion
seat
ball valve
inner diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2015014295A
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Japanese (ja)
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JP2016138609A (en
JP6474262B2 (en
Filing date
Publication date
Application filed filed Critical
Priority claimed from JP2015014295A external-priority patent/JP6474262B2/en
Priority to JP2015014295A priority Critical patent/JP6474262B2/en
Priority to ES15855254T priority patent/ES2813378T3/en
Priority to EP15855254.7A priority patent/EP3098491B1/en
Priority to PCT/JP2015/074234 priority patent/WO2016067737A1/en
Priority to US15/108,685 priority patent/US10018276B2/en
Priority to KR1020167017726A priority patent/KR101956090B1/en
Priority to CN201580059196.4A priority patent/CN107110385B/en
Priority to TW105101556A priority patent/TWI650501B/en
Publication of JP2016138609A publication Critical patent/JP2016138609A/en
Publication of JP2016138609A5 publication Critical patent/JP2016138609A5/ja
Publication of JP6474262B2 publication Critical patent/JP6474262B2/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Claims (6)

ボデー内に設けた貫通孔を有するボールの少なくとも上流側にボールシートを装着したシートリテーナを設け、前記ボールをステムを介して回動可能に設けたボールバルブにおいて、前記ボールシートを前記シートリテーナに形成した装着溝内にフリーな状態で装着し、前記ボールシートの背面シールの支点位置であるＡ部の内径寸法を前記ボールシートのシール部位よりも内径寄りに設け、高圧時におけるボールシートがＡ部を支点として開くように弾性変形して前記シール部位を外径側より内径側に向けて少なくとも面接触状態にシールするようにしたことを特徴とするトラニオン型ボールバルブ。   In a ball valve provided with a seat retainer mounted with a ball seat on at least the upstream side of a ball having a through-hole provided in a body, and the ball is rotatably provided via a stem, the ball seat is attached to the seat retainer. It is mounted in a free state in the formed mounting groove, and the inner diameter dimension of the A portion, which is the fulcrum position of the back seal of the ball seat, is provided closer to the inner diameter than the seal portion of the ball seat. A trunnion-type ball valve characterized in that it is elastically deformed so as to open as a fulcrum and seals the seal portion from the outer diameter side to the inner diameter side at least in a surface contact state. 前記支点位置であるＡ部と前記シール部位である封止部Ｂ及び封止部Ｃの位置関係を、内径寸法に対してＡ＜Ｃ＜Ｂとした請求項１に記載のトラニオン型ボールバルブ。   2. The trunnion type ball valve according to claim 1, wherein a positional relationship between the A portion that is the fulcrum position and the sealing portion B and the sealing portion C that are the sealing portions is A <C <B with respect to the inner diameter dimension. 請求項２において、組立初期及び流体圧力が低圧の場合、前記封止部Ｂが線接触状態を保持し、かつ前記封止部Ｃがボール面に非接触状態としたトラニオン型ボールバルブ。   3. The trunnion-type ball valve according to claim 2, wherein when the assembly is initial and the fluid pressure is low, the sealing portion B maintains a line contact state and the sealing portion C is not in contact with the ball surface. 前記ボールシートのシール部位を球状面に形成し、この球状面は、その中心を前記ボールの中心と同様に前記ボデー内の流路軸芯上に配置すると共に、その内径を前記ボールの球形よりも縮径して形成した請求項１乃至３の何れか１項に記載のトラニオン型ボールバルブ。 The ball seat seal portion is formed in a spherical surface, and the spherical surface is arranged on the flow axis in the body in the same manner as the center of the ball, and its inner diameter is smaller than the spherical shape of the ball. The trunnion-type ball valve according to any one of claims 1 to 3, wherein the trunnion-type ball valve is also formed with a reduced diameter. 前記装着溝の内周面と前記ボールシートのシール面側の外周面との間に所定のクリアランスを設け、高圧時にボールシートが開くようにすると共に、開き過ぎを抑制するようにした請求項１に記載のトラニオン型ボールバルブ。   2. A predetermined clearance is provided between an inner peripheral surface of the mounting groove and an outer peripheral surface on the seal surface side of the ball seat so that the ball seat is opened at a high pressure and excessive opening is suppressed. Trunnion type ball valve as described in 1. 前記装着溝に形成した係止部内周面と前記ボールシートの外周面側との間にクリアランスを設けた請求項５に記載のトラニオン型ボールバルブ。   The trunnion-type ball valve according to claim 5, wherein a clearance is provided between an inner peripheral surface of the engaging portion formed in the mounting groove and an outer peripheral surface side of the ball seat.
JP2015014295A 2014-10-28 2015-01-28 Trunnion type ball valve Active JP6474262B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2015014295A JP6474262B2 (en) 2015-01-28 2015-01-28 Trunnion type ball valve
CN201580059196.4A CN107110385B (en) 2014-10-28 2015-08-27 Fixed ball valve
EP15855254.7A EP3098491B1 (en) 2014-10-28 2015-08-27 Trunnion-type ball valve
PCT/JP2015/074234 WO2016067737A1 (en) 2014-10-28 2015-08-27 Trunnion-type ball valve
US15/108,685 US10018276B2 (en) 2014-10-28 2015-08-27 Trunnion-type ball valve
KR1020167017726A KR101956090B1 (en) 2014-10-28 2015-08-27 Trunnion-type ball valve
ES15855254T ES2813378T3 (en) 2014-10-28 2015-08-27 Trunnion type ball valve
TW105101556A TWI650501B (en) 2015-01-28 2016-01-19 Trunnion type ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015014295A JP6474262B2 (en) 2015-01-28 2015-01-28 Trunnion type ball valve

Publications (3)

Publication Number Publication Date
JP2016138609A JP2016138609A (en) 2016-08-04
JP2016138609A5 true JP2016138609A5 (en) 2018-03-08
JP6474262B2 JP6474262B2 (en) 2019-02-27

Family

ID=56559062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015014295A Active JP6474262B2 (en) 2014-10-28 2015-01-28 Trunnion type ball valve

Country Status (2)

Country Link
JP (1) JP6474262B2 (en)
TW (1) TWI650501B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6426435B2 (en) * 2014-10-28 2018-11-21 株式会社キッツ Trunnion type ball valve
CN107725802A (en) * 2017-11-02 2018-02-23 苏州丹顿机电有限公司 A kind of anti-leakage valve
JP6710254B2 (en) * 2018-10-24 2020-06-17 株式会社キッツ Trunnion type ball valve
CN113864477A (en) * 2021-10-09 2021-12-31 欧维克集团有限公司 High-pressure duplex floating ball valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269693A (en) * 1965-05-24 1966-08-30 Acf Ind Inc Ball valve seat
GB1142441A (en) * 1967-04-14 1969-02-05 Masheder Design Studies Ltd Improvements in ball valves
US4410165A (en) * 1982-02-16 1983-10-18 Whitey Co. Ball valve and seat assembly
JPS58148365U (en) * 1982-03-30 1983-10-05 日立金属株式会社 ball valve
TWI230770B (en) * 2003-12-19 2005-04-11 Metal Ind Res & Dev Ct Positive-action and anti-leak structure of a ball valve
JP5096285B2 (en) * 2008-10-27 2012-12-12 株式会社キッツ Ball valve
US8002237B2 (en) * 2008-11-12 2011-08-23 Velan Inc. Seat arrangement with cavity pressure relief for a ball valve
TWM472782U (en) * 2013-11-15 2014-02-21 Transworld Steel Entpr Co Ltd Ball pad pressure relief structure of ball valve

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