JPS6319754B2 - - Google Patents
Info
- Publication number
- JPS6319754B2 JPS6319754B2 JP55136270A JP13627080A JPS6319754B2 JP S6319754 B2 JPS6319754 B2 JP S6319754B2 JP 55136270 A JP55136270 A JP 55136270A JP 13627080 A JP13627080 A JP 13627080A JP S6319754 B2 JPS6319754 B2 JP S6319754B2
- Authority
- JP
- Japan
- Prior art keywords
- split joint
- valve
- stopper
- shutoff
- angle valve
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 28
- 238000005553 drilling Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
- Safety Valves (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、主管に割継手を気密状に取付け、そ
の割継手に気密状に取付けた穿孔機によつて、前
記主管に前記割継手と連通させる分岐口を形成
し、前記割継手に連通させた遮断用バルブからの
流体流出を阻止した状態で、その遮断用バルブに
引込み管を接続する方法に関する。Detailed Description of the Invention [Industrial Application Field] The present invention provides a method for attaching a split joint to a main pipe in an airtight manner, and using a drilling machine airtightly attached to the split joint to attach the split joint to the main pipe. The present invention relates to a method of connecting a lead-in pipe to a shutoff valve in a state where a branch port for communication is formed and fluid outflow from the shutoff valve communicated with the split joint is prevented.
従来、実公昭48−26173号公報に示されるよう
に、一体化された割継手と遮断用バルブと穿孔機
を用い、弁箱にネジ止めされた弁体に一体形成し
たホールソーによつて、弁体のネジ込みに伴つて
主管に分岐口を形成し、さらに弁体をネジ込んで
遮断用バルブを閉じ、遮断用バルブの出口に引込
み管を接続した後、遮断用バルブを開き、主管に
よる流体輸送を継続しながら、遮断用バルブ付の
引込み管を設置していた。
Conventionally, as shown in Japanese Utility Model Publication No. 48-26173, valves have been manufactured by using an integrated split joint, a shutoff valve, and a drilling machine, and a hole saw integrally formed on a valve body screwed to a valve body. As the body is screwed in, a branch port is formed in the main pipe, and the valve body is screwed in to close the shutoff valve.After connecting the lead-in pipe to the outlet of the shutoff valve, the shutoff valve is opened and the fluid flowing through the main pipe is closed. While transport continued, a service pipe with a shutoff valve was installed.
しかし、高圧の大口径管、可燃性ガスのように
安全面から流体漏洩を完全に防止しなければらな
い流体の輸送管などにおいては、実用が不可能で
あつた。
However, it has not been practical for high-pressure, large-diameter pipes, and pipes for transporting fluids such as flammable gases, which must be completely prevented from leaking from a safety standpoint.
つまり、ホールソーで主管に孔を穿けた直後か
ら遮断用バルブが完全に閉じられるまでに、分岐
口を形成しながら弁体をネジ込まなければならな
いのでかなりの時間を要し、その間に遮断用バル
ブの出口から大量の流体が噴出するからである。 In other words, it takes a considerable amount of time to completely close the shutoff valve after drilling a hole in the main pipe with a hole saw, as the valve body must be screwed in while forming the branch port. This is because a large amount of fluid is ejected from the outlet.
さらに、遮断用バルブが弁体のネジ嵌合部で閉
じる構造であるために完全な遮断を確実に行うこ
とは不可能であり、そのための流体漏洩が問題に
なるからである。 Furthermore, since the shut-off valve has a structure in which it is closed by a screw-fitting portion of the valve body, it is impossible to ensure complete shut-off, and fluid leakage thereby becomes a problem.
本発明の目的は、施工途中での流体漏洩、及
び、施工後における遮断用バルブの閉弁時の流体
漏洩をほぼ完全に防止できるようにし、たとえ主
管が高圧の大口径管であつても、あるいは、事故
のおそれのある流体の輸送管であつても、主管に
よる流体輸送を継続しながらの遮断用バルブ付引
込み管の設置を実際に施工できるようにする点に
ある。 The purpose of the present invention is to almost completely prevent fluid leakage during construction and when the shutoff valve is closed after construction, even if the main pipe is a high-pressure large-diameter pipe. Another object of the present invention is to make it possible to actually install a lead-in pipe with a shutoff valve while continuing fluid transport through the main pipe, even in the case of a fluid transport pipe where there is a risk of an accident.
本発明の特徴手段は、
(イ) 主管に気密状に取付けた割継手と、主管に割
継手と連通させる分岐口を形成するための穿孔
機との間に、開閉自在な遮断装置を気密状に取
付け、
(ロ) 穿孔機のホールソーを分岐口形成後に遮断装
置の外側に引出し、
(ハ) 遮断装置を閉じた後で穿孔機を遮断装置から
取外し、
(ニ) 膨張式ストツパーを収納したストツパー装着
治具を遮断装置に気密状に取付け、
(ホ) 遮断装置を開いた後、膨張式ストツパーを割
継手内に入れて膨張させて割継手内を遮断し、
(ヘ) 遮断装置とストツパー装着治具を割継手から
取外し、
(ト) 遮断用バルブとしてのプラグ式アングルバル
ブを割継手に気密状に取付けると同時に、膨張
式ストツパーに取付けた流体給排用ホースを、
アングルバルブの出口から導出する状態にセツ
トし、
(チ) ホースを気密貫通させた盲板でアングルバル
ブの出口を閉じ、
(リ) 膨張式ストツパーを収縮させてアングルバル
ブの出口側に引出し、アングルバルブの閉子を
回転で閉じ、
(ヌ) 盲板と膨張式ストツパーをアングルバルブか
ら取外し、
(ル) 引込み管をアングルバルブの出口に接続し
た後、アングルバルブを開く
ことにあり、その作用効果は次の通りである。
The characteristic means of the present invention is as follows: (a) A shutoff device that can be opened and closed is installed in an airtight manner between the split joint that is airtightly attached to the main pipe and a drilling machine for forming a branch port that communicates with the split joint in the main pipe. (b) Pull out the hole saw of the drilling machine to the outside of the blocking device after forming the branch port, (c) Remove the drilling machine from the blocking device after closing the blocking device, and (d) Install the stopper in which the inflatable stopper is stored. Attach the installation jig to the isolation device in an airtight manner, (E) After opening the isolation device, insert the inflatable stopper into the split joint and inflate it to isolate the inside of the split joint, (F) Attach the isolation device and the stopper. Remove the jig from the split joint, (g) Attach the plug-type angle valve as a shutoff valve to the split joint in an airtight manner, and at the same time, connect the fluid supply and discharge hose attached to the inflatable stopper.
Set the valve so that it is led out from the outlet of the angle valve, (h) close the outlet of the angle valve with a blind plate through which the hose is passed airtight, and (li) deflate the inflatable stopper and pull it out to the outlet side of the angle valve. The operation and effect are to close the valve closure by rotation, (j) remove the blind plate and inflatable stopper from the angle valve, and (l) connect the lead-in pipe to the outlet of the angle valve, then open the angle valve. is as follows.
つまり、上記(イ)項に示すように、主管に割継
手、遮断装置、穿孔機をその順に気密連通させた
状態で取付けて、主管に割継手と連通させる分岐
口を形成するから、分岐口形成に際して分岐口か
らの流体が外部流出することを、割継手、遮断装
置、穿孔機によつて防止できる。
In other words, as shown in item (a) above, a split joint, a shutoff device, and a perforator are installed in that order on the main pipe in an airtight manner to form a branch port that communicates with the split joint. During formation, fluid from the branch port can be prevented from flowing out to the outside by using a split joint, a shutoff device, and a punching machine.
上記(ロ)項及び(ハ)項に示すように、穿孔機を取外
す前に遮断装置を閉じるから、穿孔機の取外し時
における流体の外部流出を防止できる。 As shown in items (b) and (c) above, since the shutoff device is closed before removing the drilling machine, it is possible to prevent fluid from flowing out when the drilling machine is removed.
上記(ニ)項及び(ホ)項に示すように、ストツパー装
着治具で流体の外部流出が無いようにして膨張式
ストツパーをセツトし、その後で遮断装置を開い
て膨張式ストツパーで割継手を遮断するから、割
継手の遮断における流体の外部流出を防止でき、
また、膨張式ストツパーは遮断機能が優れている
から、上記(ヘ)項に示すように遮断装置とストツパ
ー装着治具を取外すに際しても、上記(ト)項の示す
ようにアングルバルブを割継手に取付けるに際し
ても、上記(チ)項に示すように盲板をアングルバル
ブに取付けるに際しても、膨張式ストツパーによ
り流体の外部流出を確実に防止できる。 As shown in items (d) and (e) above, set the inflatable stopper using the stopper installation jig to prevent fluid from flowing out, then open the shutoff device and use the inflatable stopper to secure the split joint. Since it is shut off, it is possible to prevent the fluid from flowing out when the split joint is shut off.
In addition, since the inflatable stopper has an excellent shutoff function, when removing the shutoff device and stopper mounting jig as shown in item (f) above, the angle valve can be attached to the split joint as shown in item (g) above. When installing the blind plate to the angle valve as shown in item (H) above, the inflatable stopper can reliably prevent fluid from flowing out.
アングルバルブと盲板によつて割継手の出口側
を密閉した状態で、上記(リ)項に示すように膨張式
バツグの収縮と引出しを行うから、膨張式バツグ
の取外しに伴なう流体の外部流出を防止できる。 Since the inflatable bag is deflated and pulled out as shown in item (i) above while the outlet side of the split joint is sealed with the angle valve and blind plate, fluid leakage occurs when the inflatable bag is removed. External leakage can be prevented.
上記(リ)項に示すように、回転閉子を備えた遮断
機能の優秀なプラグ式アングルバルブを閉じ、そ
の後で、上記(ヌ)項に示すように盲板と膨張式スト
ツパーを取外し、さらに、上記（ル）項に示すよ
うに引込み管をアングルバルブに接続するから、
盲板と膨張式ストツパーの撤去及び引込み管設置
に際しての流体の外部流出を防止できる。 As shown in item (i) above, close the plug-type angle valve with a rotary closure and excellent shutoff function, then remove the blind plate and inflatable stopper as shown in item (v) above, and then , since the service pipe is connected to the angle valve as shown in item (l) above,
It is possible to prevent fluid from flowing out when removing the blind plate and inflatable stopper and installing the lead-in pipe.
要するに、施工に際して常に流体の外部流出を
防止でき、しかも、遮断機能に優れた膨張式スト
ツパーとプラグ式アングルバルブで流体の外部流
出をその危険性が大きい時に防止するから、極め
て信頼性の高い漏洩防止を図れ、さらに、施工後
における引込み管の緊急遮断をプラグ式アングル
バルブで確実に行えるのである。 In short, it is possible to always prevent fluid from leaking outside during construction, and the inflatable stopper and plug-type angle valve with excellent shutoff function prevent fluid from leaking to the outside when there is a high risk of leakage, making it extremely reliable. In addition, the plug-type angle valve can be used to reliably shut off the service pipe after construction.
その結果、たとえ主管が高圧の大口径管であつ
ても、事故のおそれのある流体の輸送管であつて
も、主管による流体輸送を継続しながら遮断用バ
ルブ付引込み管を主管に分岐接続する工事を、確
実に流体漏洩を防止して実行できるようになつ
た。
As a result, even if the main pipe is a high-pressure, large-diameter pipe, or a pipe for transporting fluid that is at risk of an accident, the service pipe with a shutoff valve can be branched and connected to the main pipe while fluid transportation continues through the main pipe. It is now possible to carry out construction work while reliably preventing fluid leaks.
次に実施例を示す。 Next, examples will be shown.
第１図及び第２図に示すように、都市ガス導管
などの流体輸送用主管１に割継手２を気密状に取
付け、シヤツター式やボールバルブ型式の遮断装
置３を割継手２に気密状に取付け、穿孔機４を遮
断装置３に気密孔に取付け、ホールソー４ａで主
管１に分岐口１ａを形成しても流体の外部流出を
防止できる状態にする。その後、ホールソー４ａ
を回転させながら主管１側に移動させて分岐口１
ａを形成し、主管１に割継手２を連通させ、そし
て、ホールソー４ａを遮断装置３の外側に引出
し、遮断装置３を閉じて、穿孔機を遮断装置から
取外す。 As shown in Figures 1 and 2, a split joint 2 is airtightly attached to a main pipe 1 for transporting a fluid such as a city gas pipe, and a shutoff device 3 of the shutter type or ball valve type is attached to the split joint 2 in an airtight manner. Attachment: The perforator 4 is attached to the shutoff device 3 in an airtight hole, so that even if a branch port 1a is formed in the main pipe 1 with a hole saw 4a, fluid can be prevented from flowing out. After that, hole saw 4a
While rotating, move it to the main pipe 1 side and connect it to the branch port 1.
a, the split joint 2 is communicated with the main pipe 1, the hole saw 4a is pulled out to the outside of the blocking device 3, the blocking device 3 is closed, and the drilling machine is removed from the blocking device.
第３図に示すように、膨張式ストツパー５を収
縮状態で収納したストツパー装置治具５′を遮断
装置３に気密状に取付け、遮断装置３を開いた
後、膨張式ストツパー５の割継手２内入れて膨張
させ、膨張したストツパー５で割継手２を遮断す
る。その後、遮断装置３とストツパー装着治具
５′を割継手２から取外す。 As shown in FIG. 3, the stopper device jig 5' containing the inflatable stopper 5 in a contracted state is attached to the shutoff device 3 in an airtight manner, and after opening the shutoff device 3, the split joint 2 of the inflatable stopper 5 is opened. It is inserted and expanded, and the expanded stopper 5 blocks the split joint 2. Thereafter, the shutoff device 3 and the stopper mounting jig 5' are removed from the split joint 2.
第４図に示すように、プラグ式アングルバルブ
７を開弁状態で割継手２に気密状に取付けると同
時に、膨張式ストツパー５に取付けた流体給排用
ホース６を、回転式閉子８のＬ片流路８ａを通し
た状態でアングルバルブ７の出口から導出させ
る。 As shown in FIG. 4, while the plug type angle valve 7 is airtightly attached to the split joint 2 in an open state, the fluid supply/discharge hose 6 attached to the inflatable stopper 5 is connected to the rotary closure 8. It is led out from the outlet of the angle valve 7 while passing through the L-piece flow path 8a.
第５図に示すように、ホース６をパツキン１０
により気密貫通させた盲板１１でアングルバルブ
７の出口を閉じ、膨張式ストツパー５を閉子６ａ
の開操作で収縮させてアングルバルブ７の出口側
に引出す。 As shown in Figure 5, connect the hose 6 to the packing 10.
The outlet of the angle valve 7 is closed with a blind plate 11 passed through airtightly, and the inflatable stopper 5 is closed with a closing member 6a.
It is contracted by the opening operation and pulled out to the outlet side of the angle valve 7.
第６図に示すように、操作軸９による回転で閉
子８を閉じ、盲板１１と膨張式ストツパー５をア
ングルバルブ７から取外し、押し輪１３とパツキ
ン１４によつて引込み管１２をアングルバルブ７
の出口に接続する。 As shown in FIG. 6, the closing member 8 is closed by rotation by the operating shaft 9, the blind plate 11 and the inflatable stopper 5 are removed from the angle valve 7, and the lead-in pipe 12 is connected to the angle valve by the push ring 13 and packing 14. 7
Connect to the outlet.
引込み管１２に対する所要工事を完了した後、
アングルバルブ７を開いて主管１から引込み管１
２に流体を供給し、また、その後において引込み
管１２の緊急遮断にアングルバルブ７を利用す
る。 After completing the necessary construction work on the service pipe 12,
Open the angle valve 7 and connect the main pipe 1 to the service pipe 1.
The angle valve 7 is used for the emergency shutoff of the lead-in pipe 12.
第１図ないし第６図は本発明の施工手順を示
し、第１図は平面図、第２図ないし第６図は断面
図である。
１……主管、１ａ……分岐口、２……割継手、
３……遮断装置、４……穿孔機、４ａ……ホール
ソー、５……膨張式ストツパー、５′……ストツ
パー装着治具、６……流体給排用ホース、７……
アングルバルブ（遮断用バルブ）、８……閉子、
１１……盲板、１２……引込み管。
1 to 6 show the construction procedure of the present invention, with FIG. 1 being a plan view and FIGS. 2 to 6 being sectional views. 1... Main pipe, 1a... Branch port, 2... Split joint,
3... Shutoff device, 4... Drilling machine, 4a... Hole saw, 5... Inflatable stopper, 5'... Stopper installation jig, 6... Fluid supply/discharge hose, 7...
Angle valve (shutoff valve), 8...closer,
11... Blind plate, 12... Leading pipe.
Claims (1)
継手２に気密状に取付けた穿孔機４によつて、前
記主管１に前記割継手２と連通させる分岐口１ａ
を形成し、前記割継手２に連通させた遮断用バル
ブ７からの流体流出を阻止した状態で、その遮断
用バルブ７に引込み管１２を接続する方法であつ
て、前記割継手２と穿孔機４の間に開閉自在な遮
断装置３を気密状に取付け、前記穿孔機４のホー
ルソー４ａを前記分岐口１ａ形成後に前記遮断装
置３の外側に引出し、前記遮断装置３を閉じた後
で前記穿孔機４をその遮断装置３から取外し、膨
張式ストツパー５を収納したストツパー装着治具
５′を前記遮断装置３に気密状に取付け、前記遮
断装置３を開いた後、前記膨張式ストツパー５を
前記割継手２内に入れて膨張させてその割継手２
内を遮断し、前記遮断装置３とストツパー装着治
具５′を前記割継手２から取外し、前記遮断用バ
ルブ７としてのプラグ式アングルバルブを前記割
継手２に気密状に取付けると同時に、前記膨張式
ストツパー５に取付けた流体給排用ホース６を、
前記アングルバルブ７の出口から導出する状態に
セツトし、前記ホース６を気密貫通させた盲板１
１で前記アングルバルブ７の出口を閉じ、前記膨
張式ストツパー５を収縮させて前記アングルバル
ブ７の出口側に引出し、前記アングルバルブ７の
閉子８を回転で閉じ、前記盲板１１と膨張式スト
ツパー５を前記アングルバルブ７から取外し、前
記引込み管１２を前記アングルバルブ７の出口に
接続した後、そのアングルバルブ７を開く遮断用
バルブ付引込み管の流体輸送用主管に対する分岐
接続方法。1 A split joint 2 is airtightly attached to the main pipe 1, and a branch port 1a is made to communicate with the split joint 2 through the main pipe 1 using a punching machine 4 airtightly attached to the split joint 2.
A method of connecting a lead-in pipe 12 to a shutoff valve 7 in a state where fluid is prevented from flowing out from the shutoff valve 7 communicated with the split joint 2, the method comprising: 4, the hole saw 4a of the drilling machine 4 is pulled out to the outside of the blocking device 3 after forming the branch port 1a, and after the blocking device 3 is closed, the drilling is completed. The machine 4 is removed from its shutoff device 3, and the stopper mounting jig 5' containing the inflatable stopper 5 is airtightly attached to the shutoff device 3. After opening the shutoff device 3, the inflatable stopper 5 is attached to the shutoff device 3. Put it in the split joint 2 and expand it to make the split joint 2.
At the same time, the shutoff device 3 and the stopper mounting jig 5' are removed from the split joint 2, and a plug-type angle valve serving as the shutoff valve 7 is airtightly attached to the split joint 2. The fluid supply/discharge hose 6 attached to the type stopper 5,
A blind plate 1 is set to lead out from the outlet of the angle valve 7 and has the hose 6 passed through it in an airtight manner.
1 closes the outlet of the angle valve 7, contracts the inflatable stopper 5 and pulls it out to the outlet side of the angle valve 7, closes the closure 8 of the angle valve 7 by rotation, and connects the blind plate 11 with the inflatable stopper 5. After the stopper 5 is removed from the angle valve 7 and the lead-in pipe 12 is connected to the outlet of the angle valve 7, the angle valve 7 is opened.A method of branching and connecting a lead-in pipe with a shutoff valve to a main fluid transport pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13627080A JPS5761893A (en) | 1980-09-29 | 1980-09-29 | Setting of emergency interruption valve for service pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13627080A JPS5761893A (en) | 1980-09-29 | 1980-09-29 | Setting of emergency interruption valve for service pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5761893A JPS5761893A (en) | 1982-04-14 |
| JPS6319754B2 true JPS6319754B2 (en) | 1988-04-25 |
Family
ID=15171259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13627080A Granted JPS5761893A (en) | 1980-09-29 | 1980-09-29 | Setting of emergency interruption valve for service pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5761893A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159782U (en) * | 1983-04-09 | 1984-10-26 | 株式会社明電舎 | Fuel injection pump injection amount measuring device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826173U (en) * | 1971-08-03 | 1973-03-29 | ||
| JPS49133923A (en) * | 1973-04-29 | 1974-12-23 | ||
| JPS51336A (en) * | 1974-06-19 | 1976-01-06 | Olympus Optical Co | DOJIROKUONSATSUEISOCHI |
-
1980
- 1980-09-29 JP JP13627080A patent/JPS5761893A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826173U (en) * | 1971-08-03 | 1973-03-29 | ||
| JPS49133923A (en) * | 1973-04-29 | 1974-12-23 | ||
| JPS51336A (en) * | 1974-06-19 | 1976-01-06 | Olympus Optical Co | DOJIROKUONSATSUEISOCHI |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761893A (en) | 1982-04-14 |
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