JP3196016B2 - Branch pipe fitting - Google Patents
Branch pipe fittingInfo
- Publication number
- JP3196016B2 JP3196016B2 JP05044497A JP5044497A JP3196016B2 JP 3196016 B2 JP3196016 B2 JP 3196016B2 JP 05044497 A JP05044497 A JP 05044497A JP 5044497 A JP5044497 A JP 5044497A JP 3196016 B2 JP3196016 B2 JP 3196016B2
- Authority
- JP
- Japan
- Prior art keywords
- branch pipe
- seal
- seal plug
- plug
- screwed
- 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.)
- Expired - Lifetime
Links
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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
- F16L41/06—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Surface Heating Bodies (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、分岐管継手に関
し、詳しくは、ガス等の流体が流通している既設本管か
ら分岐管を取出すために使用する分岐管継手であって、
緊急時に遮断するためのシールプラグを備えた分岐管継
手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch pipe joint, and more particularly, to a branch pipe joint used for taking out a branch pipe from an existing main pipe through which a fluid such as gas flows.
The present invention relates to a branch pipe joint provided with a seal plug for shutting off in an emergency.
【０００２】[0002]
【従来の技術】ガス等の流体が流通している既設本管か
ら分岐管を取出す場合の分岐管継手として、本管内の流
体の流通を止めることなく施工することができ、しか
も、緊急時には分岐管への流体の流通を遮断するための
シールプラグを備えた分岐管継手が広く用いられている
（実公平４−７４３８号公報参照）。2. Description of the Related Art A branch pipe joint for taking out a branch pipe from an existing main pipe through which a fluid such as gas flows can be constructed without stopping the flow of the fluid in the main pipe. A branch pipe joint provided with a seal plug for blocking the flow of fluid to a pipe is widely used (see Japanese Utility Model Publication No. 4-7438).
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の分岐管
継手のシールプラグは、大口径のものには適用し難く、
大口径の分岐管継手においては、シールキャップを含め
て、よりシール性能を高める必要があった。However, the conventional seal plug of the branch pipe joint is difficult to apply to a large diameter one.
In a large diameter branch pipe joint, it was necessary to further enhance the sealing performance including the seal cap.
【０００４】そこで本発明は、シールキャップやシール
プラグのシール性能を高め、大口径のものにも対応可能
な分岐管継手を提供することを目的としている。Accordingly, an object of the present invention is to provide a branch pipe joint capable of improving the sealing performance of a seal cap or a seal plug and adapting to a large-diameter pipe.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明の分岐管継手は、本管の側面に溶融接着され
るサドル部と、該サドル部から突出した分岐管部とを備
え、前記分岐管部内にシールプラグを内蔵し、かつ、分
岐管部の先端部にシールキャップを螺着した分岐管継手
であって、前記シールプラグは、円柱状のシールプラグ
本体と該シールプラグ本体に装着される筒状のシールパ
ッキンとからなり、前記シールプラグ本体は、胴部周面
に前記分岐管部の内周面の略全長にわたって設けられた
雌ネジに螺合する雄ネジを有し、前記本管側に前記シー
ルパッキンを装着する小径部を有するとともに、前記分
岐管部先端側に、該シールプラグを回転させる工具に係
合する係合部を有しており、前記シールキャップは、前
記分岐管部の先端部外周と先端面とに、それぞれＯリン
グを介して気密に装着され、前記小径部に装着されたシ
ールパッキンは、前記シールプラグがねじ込まれること
によって記分岐管部の最奥部内面に気密に接触するとと
もに、前記本管に穿設された開口を閉塞可能に形成され
ていることを特徴としている。In order to achieve the above object, a branch pipe joint according to the present invention comprises a saddle portion fused to a side surface of a main pipe, and a branch pipe portion protruding from the saddle portion. A branch pipe joint in which a seal plug is built in the branch pipe section, and a seal cap is screwed onto a tip end of the branch pipe section, wherein the seal plug includes a cylindrical seal plug body and the seal plug body. The seal plug main body has a male screw that is screwed into a female screw provided over substantially the entire length of the inner peripheral surface of the branch pipe portion on the body peripheral surface, The main pipe side has a small-diameter portion for mounting the seal packing, and the branch pipe portion tip side has an engaging portion that engages with a tool for rotating the seal plug, and the seal cap includes: Tip of the branch pipe In the periphery and the distal end surface, is mounted airtight via the O-ring, respectively, shea <br/> Rupakkin mounted on the small-diameter portion, said sealing plug is screwed
Serial contacts with hermetically deepest inner surface of the branch pipe portion, is characterized by being capable of closing to form a drilled opening in the main pipe by.
【０００６】[0006]
【発明の実施の形態】図１は本発明の分岐管継手の一形
態例を示す分解斜視図、図２は分岐管継手を本管に装着
した通常の使用状態を示す断面図である。また、図３乃
至図７は分岐管継手を本管に装着する手順を説明するた
めの断面図、図８は遮断時の状態を示す断面図である。FIG. 1 is an exploded perspective view showing an embodiment of a branch pipe joint according to the present invention, and FIG. 2 is a sectional view showing a normal use state in which the branch pipe joint is mounted on a main pipe. 3 to 7 are cross-sectional views for explaining a procedure for mounting the branch pipe joint to the main pipe, and FIG. 8 is a cross-sectional view showing a state at the time of interruption.
【０００７】まず、図１及び図２に示すように、本形態
例に示す分岐管継手１０は、本管１１の側面に溶融接着
されるサドル部１２と、該サドル部１２から突出した分
岐管部１３と、該分岐管部１３の側方に突出した分岐口
１４とを有するもので、前記サドル部１２には、内周面
に発熱線１５が埋設されるとともに、通電用の端子１６
が設けられている。また、分岐管部１３の先端部外周面
には、シールキャップ１７を螺着するための雄ネジ１８
と、該雄ネジ１８より先端側に第一のＯリング１９を装
着するための周溝２０とが設けられ、内周面には、分岐
管部１３の略全長にわたって雌ネジ２１が設けられてい
る。First, as shown in FIGS. 1 and 2, a branch pipe joint 10 according to this embodiment includes a saddle portion 12 melt-bonded to a side surface of a main pipe 11, and a branch pipe protruding from the saddle portion 12. The saddle portion 12 has a heat generating wire 15 embedded in an inner peripheral surface thereof and a current-carrying terminal 16.
Is provided. A male screw 18 for screwing the seal cap 17 is provided on the outer peripheral surface of the distal end portion of the branch pipe portion 13.
A peripheral groove 20 for mounting a first O-ring 19 is provided on the distal end side of the male screw 18. A female screw 21 is provided on the inner peripheral surface over substantially the entire length of the branch pipe portion 13. I have.
【０００８】また、分岐管部１３の先端部に螺着される
シールキャップ１７は、その内周面に前記雄ネジ１８に
螺合する雌ネジ２２と、前記第一のＯリング１９に接触
する平滑面２３とを有するとともに、天板部内面に、第
二のＯリング２４を装着する環状溝２５を有している。
したがって、このシールキャップ１７を分岐管部１３に
装着すると、第一，第二Ｏリング１９，２４により周方
向と軸方向との二方向で気密にシールされるとともに、
雄ネジ１８と雌ネジ２２との螺合部分によってもシール
されることになる。The seal cap 17 screwed to the distal end of the branch pipe portion 13 contacts the female screw 22 screwed to the male screw 18 and the first O-ring 19 on the inner peripheral surface. It has a smooth surface 23 and an annular groove 25 for mounting a second O-ring 24 on the inner surface of the top plate.
Therefore, when the seal cap 17 is mounted on the branch pipe portion 13, the first and second O-rings 19 and 24 provide airtight sealing in two directions, the circumferential direction and the axial direction.
Sealing is also performed by a threaded portion between the male screw 18 and the female screw 22.
【０００９】前記分岐管部１３内に挿入されるシールプ
ラグ２６は、胴部周面に前記分岐管部１３の雌ネジ２１
に気密に螺合する雄ネジ２７を有する円柱状のシールプ
ラグ本体２８と、該シールプラグ本体２８に装着される
筒状のシールパッキン２９とからなるもので、シールプ
ラグ本体２８の本管側（図において下方）には、前記シ
ールパッキン２９を装着する小径部３０及び抜止め用の
鍔３１が設けられ、分岐管部先端側（図において上方）
には、シールプラグ２６を回転させる工具を係合させる
ための六角形の穴からなる係合部３２が設けられてい
る。The seal plug 26 inserted into the branch pipe 13 is provided with a female screw 21 of the branch pipe 13 on the peripheral surface of the body.
And a cylindrical seal packing 29 mounted on the seal plug main body 28. The main body side of the seal plug main body 28 (see FIG. 1). In the lower part of the figure, a small diameter part 30 for mounting the seal packing 29 and a flange 31 for retaining are provided, and the tip side of the branch pipe part (the upper part in the figure).
Is provided with an engaging portion 32 formed of a hexagonal hole for engaging a tool for rotating the seal plug 26.
【００１０】上記構成の分岐管継手１０は、通常時は、
図２に示すように、シールプラグ２６を分岐管部先端側
に位置させて本管１１内と分岐口１４とを連通させた状
態になっている。この状態では、シールプラグ２６の雄
ネジ２７とシールパッキン２９とが分岐管部１３に対し
て接触し、さらに、前述のように、シールキャップ１７
が気密に装着されているので、分岐管部１３からガス等
が漏洩することがない。The branch pipe joint 10 having the above configuration is normally
As shown in FIG. 2, the seal plug 26 is located on the distal end side of the branch pipe portion, and the inside of the main pipe 11 and the branch port 14 are in communication. In this state, the male screw 27 of the seal plug 26 and the seal packing 29 come into contact with the branch pipe portion 13, and further, as described above, the seal cap 17
Are airtightly mounted, so that gas and the like do not leak from the branch pipe section 13.
【００１１】次に、図３乃至図７に基づいて、上記構造
の分岐管継手１０を、ガス等の流体が流通している既設
の本管１１に取付ける手順を説明する。まず、図３に示
すように、本管１１の所定位置に前記サドル部１２をセ
ットした状態で前記発熱線１５に通電し、サドル部１２
の内周面を溶融してサドル部１２を本管１１に溶融接着
する。また、前記分岐口１４に所定の分岐配管（図示せ
ず）を接続するとともに、分岐管部１３に、継手３３を
介してボール弁３４を有する作業管３５を装着する。な
お、このボール弁３４の通孔部及び作業管３５の内径
は、分岐管部１３の内径と略同じ内径を有している。ま
た、作業管３５は、分岐管部１３の雄ネジ１８にねじ込
んで装着するようにしてもよい。Next, a procedure for attaching the branch pipe joint 10 having the above structure to the existing main pipe 11 through which a fluid such as gas flows will be described with reference to FIGS. First, as shown in FIG. 3, the heating wire 15 is energized while the saddle portion 12 is set at a predetermined position of the main pipe 11, and the saddle portion 12 is turned on.
Is melted and the saddle portion 12 is melt-bonded to the main pipe 11. Further, a predetermined branch pipe (not shown) is connected to the branch port 14, and a working pipe 35 having a ball valve 34 is attached to the branch pipe section 13 via a joint 33. The inner diameter of the through hole of the ball valve 34 and the inner diameter of the working pipe 35 are substantially the same as the inner diameter of the branch pipe 13. Further, the working pipe 35 may be screwed into the male screw 18 of the branch pipe section 13 and mounted.
【００１２】そして、前記作業管３５の端部開口から、
作業管３５及び分岐管部１３に対して気密性を有するカ
ッター３６を挿入し、図４に示すように、カッター３６
を回転させながら押込むことにより本管１１の穿孔を行
う。次いで、図５に示すように、カッター３６を作業管
３５の先端部まで戻した後、前記ボール弁３４を閉じ
る。これにより、本管１１の開口１１ａを介して本管１
１内と分岐口１４とが連通した状態になる。From the opening at the end of the working tube 35,
An airtight cutter 36 is inserted into the working pipe 35 and the branch pipe section 13, and as shown in FIG.
The main pipe 11 is pierced by pushing while rotating. Next, as shown in FIG. 5, after returning the cutter 36 to the tip of the working tube 35, the ball valve 34 is closed. Thereby, the main pipe 1 is opened through the opening 11a of the main pipe 11.
1 and the branch port 14 are in communication.
【００１３】次に、カッター３６を作業管３５から抜取
った後、図６に示すように、作業管３５内にシールプラ
グ２６を挿入してボール弁３４を開き、前記係合部３２
に係合させた工具によりシールプラグ２６を分岐管部１
３にねじ込んでいく。そして、シールプラグ２６が所定
位置に達した後、図７に示すように、作業管３５を分岐
管部１３から取外す。その後、分岐管部１３にシールキ
ャップ１７を装着することにより、前記図２に示した通
常の使用状態となる。Next, after extracting the cutter 36 from the working tube 35, as shown in FIG. 6, the seal plug 26 is inserted into the working tube 35 to open the ball valve 34, and the engaging portion 32 is opened.
The seal plug 26 is connected to the branch pipe part 1 by the tool
Screw into 3. Then, after the seal plug 26 reaches a predetermined position, the working pipe 35 is removed from the branch pipe section 13 as shown in FIG. Thereafter, by attaching the seal cap 17 to the branch pipe section 13, the normal use state shown in FIG. 2 is obtained.
【００１４】また、分岐配管の修理等で流体を遮断する
必要が生じた場合は、図８に示すように、シールキャッ
プ１７を取外し、前記係合部３２に係合させた工具によ
りシールプラグ２６を分岐管部１３の最奥部にまでねじ
込んでいく。これにより、シールパッキン２９が本管１
１の開口１１ａ部分に圧着してシールするとともに、シ
ールパッキン２９の外周面が分岐管部１３の内周面と気
密に接触して二重にシールし、本管１１内と分岐口１４
とを遮断し、本管１１内の流体が漏洩することを防止す
る。また、シールプラグ２６におけるシールパッキン２
９と雄ネジ２７との寸法を、分岐口１４の径に応じて設
定しておくことにより、シールプラグ２６をねじ込む際
に、シールパッキン２９か雄ネジ２７のいずれかが分岐
管部１３の内周面に接触している状態になるので、シー
ルプラグ２６のねじ込み作業中に本管１１内の流体が外
部に漏洩するのを防止することができる。If it becomes necessary to shut off the fluid for repairing the branch pipe, etc., the seal cap 17 is removed and the seal plug 26 is engaged with the engagement portion 32 as shown in FIG. Is screwed into the innermost part of the branch pipe part 13. Thereby, the seal packing 29 is attached to the main pipe 1.
1, the outer peripheral surface of the seal packing 29 is airtightly contacted with the inner peripheral surface of the branch pipe portion 13 to seal double, and the inside of the main pipe 11 and the branch port 14 are sealed.
To prevent the fluid in the main pipe 11 from leaking. Further, the seal packing 2 in the seal plug 26 is used.
When the seal plug 26 is screwed in, either the seal packing 29 or the male screw 27 is set inside the branch pipe portion 13 by setting the dimensions of the male screw 9 and the male screw 27 in accordance with the diameter of the branch port 14. Since the state is in contact with the peripheral surface, it is possible to prevent the fluid in the main pipe 11 from leaking to the outside during the screwing operation of the seal plug 26.
【００１５】なお、前記カッター３６やシールプラグ２
６を回転させるための工具等は、従来と同様のものを同
様にして用いることができるので、その詳細な説明は省
略する。The cutter 36 and the seal plug 2
The same tool as that used in the related art can be used in the same manner as the tool for rotating the wheel 6, and a detailed description thereof will be omitted.
【００１６】図９は、本発明の分岐管継手の他の形態例
を示す断面図であって、本管１１の補修工事を行う際等
に用いられるものである。この分岐管継手４０は、前記
同様のサドル部４１と、該サドル部４１から突出した分
岐管部４２とを有しており、分岐管部４２の先端に所定
のバイパス配管（図示せず）を接続したりして使用さ
れ、通常、本管の補修終了後には、分岐管部４２は閉塞
された状態となる。FIG. 9 is a sectional view showing another embodiment of the branch pipe joint according to the present invention, which is used when repairing the main pipe 11 is performed. The branch pipe joint 40 has a saddle part 41 similar to the above and a branch pipe part 42 protruding from the saddle part 41, and a predetermined bypass pipe (not shown) is provided at the tip of the branch pipe part 42. The branch pipe 42 is normally closed after the main pipe has been repaired.
【００１７】上記分岐管部４２には、前記同様に、前記
シールキャップ１７を螺着するための雄ネジ１８とＯリ
ング１９を装着するための周溝２０とが外周面に設けら
れるとともに、前記シールプラグ２６が螺合する雌ネジ
２１が内周面に設けられている。In the same manner as described above, the branch pipe portion 42 is provided with an external thread 18 for screwing the seal cap 17 and a peripheral groove 20 for mounting the O-ring 19 on the outer peripheral surface. A female screw 21 with which the seal plug 26 is screwed is provided on the inner peripheral surface.
【００１８】したがって、分岐管部４２の閉塞は、分岐
管部４２の先端側から前記シールプラグ２６を分岐管部
４２の最奥部にまでねじ込み、次いで、分岐管部４２の
先端にシールキャップ１７を装着することにより行うこ
とができる。これにより、シールパッキン２９と第一，
第二Ｏリング１９，２４とで分岐管部４２を確実にシー
ルすることができる。なお、本形態例に示す分岐管継手
４０を用いた工事手順の説明は省略する。Therefore, when the branch pipe section 42 is closed, the seal plug 26 is screwed from the distal end side of the branch pipe section 42 to the deepest portion of the branch pipe section 42, and then the seal cap 17 is attached to the distal end of the branch pipe section 42. Can be carried out by attaching the. Thereby, the seal packing 29 and the first,
The branch pipe portion 42 can be reliably sealed with the second O-rings 19 and 24. The description of the construction procedure using the branch pipe joint 40 shown in the present embodiment will be omitted.
【００１９】[0019]
【発明の効果】以上説明したように、本発明の分岐管継
手によれば、分岐管継手部分のシール性能を大幅に高め
ることができるので、大口径の分岐管を取出す際にも安
全に使用することができる。As described above, according to the branch pipe joint of the present invention, the sealing performance of the branch pipe joint can be greatly improved, so that it can be used safely even when taking out a large-diameter branch pipe. can do.
【図１】 本発明の分岐管継手の一形態例を示す分解斜
視図である。FIG. 1 is an exploded perspective view showing one embodiment of a branch pipe joint according to the present invention.
【図２】 分岐管継手の通常の使用状態を示す断面図で
ある。FIG. 2 is a sectional view showing a normal use state of the branch pipe joint.
【図３】 分岐管継手を本管に溶融接着した状態を示す
断面図である。FIG. 3 is a cross-sectional view showing a state where a branch pipe joint is melt-bonded to a main pipe.
【図４】 本管穿孔時の状態を示す断面図である。FIG. 4 is a sectional view showing a state at the time of main pipe perforation.
【図５】 本管穿孔後の状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state after main pipe perforation.
【図６】 シールプラグを挿入する状態を示す断面図で
ある。FIG. 6 is a sectional view showing a state where a seal plug is inserted.
【図７】 シールプラグを所定位置にねじ込んだ状態を
示す断面図である。FIG. 7 is a sectional view showing a state where the seal plug is screwed into a predetermined position.
【図８】 遮断時の状態を示す断面図である。FIG. 8 is a sectional view showing a state at the time of interruption.
【図９】 本発明の分岐管継手の他の形態例を示す断面
図である。FIG. 9 is a sectional view showing another embodiment of the branch pipe joint according to the present invention.
１０…分岐管継手、１１…本管、１１ａ…開口、１２…
サドル部、１３…分岐管部、１４…分岐口、１５…発熱
線、１６…端子、１７…シールキャップ、１８…雄ネ
ジ、１９…Ｏリング、２０…周溝、２１…雌ネジ、２２
…雌ネジ、２３…平滑面、２４…Ｏリング、２５…環状
溝、２６…シールプラグ、２７…雄ネジ、２８…シール
プラグ本体、２９…シールパッキン、３０…小径部、３
１…鍔、３２…係合部、３３…継手、３４…ボール弁、
３５…作業管、３６…カッター10 branch pipe joint, 11 main pipe, 11a opening, 12
Saddle part, 13 ... branch pipe part, 14 ... branch port, 15 ... heating wire, 16 ... terminal, 17 ... seal cap, 18 ... male screw, 19 ... O-ring, 20 ... circumferential groove, 21 ... female screw, 22
... female screw, 23 ... smooth surface, 24 ... O-ring, 25 ... annular groove, 26 ... seal plug, 27 ... male screw, 28 ... seal plug body, 29 ... seal packing, 30 ... small diameter part, 3
DESCRIPTION OF SYMBOLS 1 ... Flange, 32 ... Engagement part, 33 ... Joint, 34 ... Ball valve,
35 ... working tube, 36 ... cutter
───────────────────────────────────────────────────── フロントページの続き (72)発明者 上田 浩史 大阪府大阪市中央区平野町四丁目１番２ 号 大阪瓦斯株式会社内 (72)発明者 飯塚 健二 大阪府大阪市中央区平野町四丁目１番２ 号 大阪瓦斯株式会社内 (72)発明者 清水 博 大阪府大阪市中央区平野町四丁目１番２ 号 大阪瓦斯株式会社内 (72)発明者 田中 孝裕 大阪府大阪市中央区平野町四丁目１番２ 号 大阪瓦斯株式会社内 (72)発明者 塩浜 裕一 埼玉県朝霞市根岸台三丁目15番１号 積 水化学工業株式会社東京工場内 (72)発明者 杉山 和人 山口県玖珂郡和木町和木六丁目１番２号 三井石油化学工業株式会社内 (72)発明者 松野 純雄 神奈川県平塚市真土2480番地 三菱樹脂 株式会社平塚工場内 (56)参考文献 実開 昭62−13291（ＪＰ，Ｕ) 実公 平４−7438（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 41/06 F16L 47/02 F16L 55/00 H05B 3/36 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Ueda 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka Inside Osaka Gas Co., Ltd. (72) Inventor Kenji Iizuka 4-chome, Hirano-cho, Chuo-ku, Osaka, Osaka No. 1-2 Inside Osaka Gas Co., Ltd. (72) Hiroshi Shimizu, Inventor 4-1-2 Hirano-cho, Chuo-ku, Osaka City, Osaka Prefecture Inside (72) Inventor Takahiro Tanaka, Takahiro Tanaka, Hirano-cho, Chuo-ku, Osaka City, Osaka 4-1-2, Osaka Gas Co., Ltd. (72) Inventor Yuichi Shiohama 3--15-1, Negishidai, Asaka-shi, Saitama Sekisui Chemical Co., Ltd.Tokyo Plant (72) Inventor Kazuto Sugiyama, Kuga, Yamaguchi Prefecture (1-2) Inventor Sumio Matsuno 2480 Mado, Hiratsuka City, Kanagawa Prefecture Mitsubishi Plastics Corporation Hiratsuka Plant (56) References JP-A 62-13291 (JP, U) JP 4-7438 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) F16L 41/06 F16L 47 / 02 F16L 55/00 H05B 3/36
Claims (1)
と、該サドル部から突出した分岐管部とを備え、前記分
岐管部内にシールプラグを内蔵し、かつ、分岐管部の先
端部にシールキャップを螺着した分岐管継手であって、
前記シールプラグは、円柱状のシールプラグ本体と該シ
ールプラグ本体に装着される筒状のシールパッキンとか
らなり、前記シールプラグ本体は、胴部周面に前記分岐
管部の内周面の略全長にわたって設けられた雌ネジに螺
合する雄ネジを有し、前記本管側に前記シールパッキン
を装着する小径部を有するとともに、前記分岐管部先端
側に、該シールプラグを回転させる工具に係合する係合
部を有しており、前記シールキャップは、前記分岐管部
の先端部外周と先端面とに、それぞれＯリングを介して
気密に装着され、前記小径部に装着されたシールパッキ
ンは、前記シールプラグがねじ込まれることによって前
記分岐管部の最奥部内面に気密に接触するとともに前記
本管に穿設された開口を閉塞可能に形成されていること
を特徴とする分岐管継手。1. A saddle portion which is melt-bonded to a side surface of a main pipe, and a branch pipe part protruding from the saddle part, a seal plug is built in the branch pipe part, and a tip end of the branch pipe part A branch pipe fitting in which a seal cap is screwed to
The seal plug includes a cylindrical seal plug main body and a cylindrical seal packing mounted on the seal plug main body. A tool that has a male thread that is screwed into a female screw provided over the entire length, has a small-diameter portion on which the seal packing is mounted on the main pipe side, and a tool that rotates the seal plug on the branch pipe tip end side. The seal cap has an engagement portion to be engaged, and the seal cap is air-tightly mounted on an outer periphery and an end surface of a distal end portion of the branch pipe portion via an O-ring, respectively, and a seal mounted on the small diameter portion. The packing is formed in such a manner that the sealing plug is screwed into the airtightly to contact the innermost surface of the innermost portion of the branch pipe portion and can close an opening formed in the main pipe. Feature Branch pipes joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05044497A JP3196016B2 (en) | 1997-03-05 | 1997-03-05 | Branch pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05044497A JP3196016B2 (en) | 1997-03-05 | 1997-03-05 | Branch pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10246379A JPH10246379A (en) | 1998-09-14 |
| JP3196016B2 true JP3196016B2 (en) | 2001-08-06 |
Family
ID=12859040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05044497A Expired - Lifetime JP3196016B2 (en) | 1997-03-05 | 1997-03-05 | Branch pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3196016B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101437665B1 (en) | 2013-01-10 | 2014-09-05 | 주식회사대한송유관공사 | Leakage blocking device for oil pipeline theft valve |
| KR20180000467U (en) * | 2016-08-09 | 2018-02-21 | 강남현 | Fitting device to be used line-stopping |
| EP4279790A3 (en) * | 2016-09-01 | 2024-03-13 | Oceaneering International, Inc. | System for and method of sealing a flowline with a metal seal after hot tapping |
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|---|---|---|---|---|
| JP4721250B2 (en) * | 2000-10-30 | 2011-07-13 | 日立金属株式会社 | Branch extraction fitting |
| JP2006258146A (en) * | 2005-03-15 | 2006-09-28 | Tokai Rubber Ind Ltd | Air bleeding pipe joint |
| JP4915148B2 (en) * | 2006-06-16 | 2012-04-11 | ダイキン工業株式会社 | Closing member of closing valve or branch joint |
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| JP5081569B2 (en) * | 2006-12-28 | 2012-11-28 | 積水化学工業株式会社 | Branch joint |
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| JP5409406B2 (en) * | 2010-01-13 | 2014-02-05 | Ｊｆｅ継手株式会社 | Branch extraction method from main pipe |
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1997
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101437665B1 (en) | 2013-01-10 | 2014-09-05 | 주식회사대한송유관공사 | Leakage blocking device for oil pipeline theft valve |
| KR20180000467U (en) * | 2016-08-09 | 2018-02-21 | 강남현 | Fitting device to be used line-stopping |
| EP4279790A3 (en) * | 2016-09-01 | 2024-03-13 | Oceaneering International, Inc. | System for and method of sealing a flowline with a metal seal after hot tapping |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10246379A (en) | 1998-09-14 |
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