JPS6258435B2 - - Google Patents
Info
- Publication number
- JPS6258435B2 JPS6258435B2 JP54167100A JP16710079A JPS6258435B2 JP S6258435 B2 JPS6258435 B2 JP S6258435B2 JP 54167100 A JP54167100 A JP 54167100A JP 16710079 A JP16710079 A JP 16710079A JP S6258435 B2 JPS6258435 B2 JP S6258435B2
- Authority
- JP
- Japan
- Prior art keywords
- conduit
- elastic membrane
- rigging
- main body
- membrane body
- 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
- 239000012528 membrane Substances 0.000 claims description 45
- 230000008602 contraction Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 description 12
- 239000012530 fluid Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Description
〔産業上の利用分野〕
本発明は、輸送用導管内で移動させて、任意の
位置で導管を遮断する装置、詳しくは、移動操作
用索具を連結した本体の外周に、膨張収縮操作自
在な環状の弾性膜体をその前後の押え板で取付
け、前記弾性膜体の内部に連通する膨張収縮操作
用のホースを前記本体に連結し、前記弾性膜体を
膨張により輸送用導管の内面全周に圧接できるよ
うに形成した移動式導管遮断装置に関する。
〔従来技術〕
従来、第９図に示すように、導管Ｐ内で移動さ
せるための索具Ｗを連結した本体１に、環状の弾
性膜体２をホースH1による流体給排で膨張収縮
操作自在に押え板３ａ，４ａで取付けていた。
〔発明が解決しようとする問題点〕
しかし、弾性膜体２の一部が収縮時でも押え板
３ａ，４ａの外周縁よりも導管Ｐ側に突出してい
るため、導管Ｐ内での移動に際し弾性膜体２が導
管Ｐの内面にこすられ、弾性膜体２の摩損や突起
による切断損傷を生じやすい欠点があつた。
また、導管Ｐ内での移動に際し、導管Ｐの内面
に段差が存在すると、索具Ｗ側の押え板３ａが導
管Ｐに引つ掛かり、装置移動作業が困難になつた
り不可能になる危険性が大きい欠点があつた。
本発明の目的は、導管内移動に伴う弾性膜体の
損傷を十分に防止できると共に、たとえ導管内面
に段差が存在しても円滑確実に装置を牽引移動で
きるようにする点にある。
〔問題を解決するための手段〕
本発明の特徴構成は、索具に連結した本体の外
周に前後の押え板で取付けられた膨張収縮操作自
在な弾性膜体と前記両押え板を、その弾性膜体が
収縮により前記両押え板の外周縁よりも前記本体
側に引退するように相対配置し、段差乗り越え用
の弾性ガイドを、前記索具の延出側に突出する状
態で、かつその索具の周りに分散配置して、さら
に先端側ほど前記索具側に位置する姿勢で前記本
体に取付けことにあり、その作用効果は次の通り
である。
〔作用〕
つまり、索具による引つ張りにより導管内で移
動させるに際し、弾性膜体を収縮させて前後の押
え板の外周縁より引退させることができるから、
弾性膜体が導管にこすられることを両押え板のス
ペーサとしての作用によつて防止でき、弾性膜体
の摩損や突起による切断損傷を十分に防止でき、
弾性膜体の耐久性向上、弾性膜体による導管遮断
の信頼性向上を図れるようになつた。
また、導管内面に段差が存在しても、索具側に
突出すると共に、索具の周りに分散配置し、かつ
先端側ほど索具側になる姿勢にした弾性ガイドを
設けてあるから、ガイドの作用で段差を円滑確実
の乗り越えさせることができ、装置の管内移動作
業を容易迅速に行えるようになつた。
〔発明の効果〕
その結果、耐久性、導管遮断の信頼性、作業性
の全てにおいて一段と優れた、導管工事において
極めて有用な移動式導管遮断装置を提供できるよ
うになつた。
〔実施例〕
次に実施例を示す。
第１図及び第２図に示すように、筒状の本体１
にワイヤーなどの移動操作用索具Ｗを、本体１内
に対する仕切板９、ロツド１０、揺動自在な連結
具１１により連結し、索具Ｗの引つ張りで装置を
気体輸送用導管Ｐ内で移動できるように構成して
ある。
膨張収縮操作自在な弾性膜体２を本体１の外周
に前後の押え板３，４とボルト５，６で取付け、
流体供給及び排出で弾性膜体２を膨張収縮操作す
るための一対のホースH1を、リング１１ａで固
定した状態で仕切板９に連結し、本体１などに形
成した貫通孔１ａで弾性膜体２の内部に連通さ
せ、弾性膜体２を膨張により導管Ｐの内面全周に
圧接して、導管Ｐを遮断できるように構成してあ
る。
弾性膜体２の外周面にリング状の突条２ａを形
成して、遮断効果を向上できるように構成してあ
る。
弾性膜体２と両押え板３，４を、弾性膜体２が
収縮により両押え板３，４の外周縁より本体１側
に引退するように相対配置し、弾性膜体２を収縮
させて導管Ｐ内で移動させるに際し、両押え板
３，４の作用で弾性膜体２が導管Ｐにこすられな
いように構成してある。
ホースH1や連絡ホースH1′を接続するための継
手７、及び、気密テスト用ホースH2や連結ホー
スH2′を接続するための継手８を、夫々が前後に
２個づつ位置する状態で、かつ、前後に並ぶもの
どうしが互いに連通する状態で仕切板９に取付け
てある。
鋼線をＶ字形状に折曲げた段差乗り越え用の弾
性ガイド１２を、索具Ｗの延出方向に突出する状
態で、かつ、索具Ｗの周りに分散配置して、さら
に先端側ほど索具Ｗ側に位置する状態で、押え板
３を介して本体１に取付け、導管Ｐの内面の段差
をガイド１２の作用で円滑確実に通過するように
構成してあり、ガイド１２は長いものと短いもの
が交互に配置されている。
次に、上記移動式導管遮断装置の使用法を説明
する。
第３図に示すように、２個の導管遮断装置Ａを
腰折れ自在な連結具１３で連結して使用する。
尚、２個の弾性膜体２を連絡ホースH1′で接続し
て、前方の導管遮断装置Ａに接続したホースH1
による流体給排で両弾性膜体２を同時に膨張収縮
できるように準備しておき、また、後方の導管遮
断装置Ａにおいて後側に位置する継手７をプラグ
などで閉じておく。また、前方の導管遮断装置Ａ
の後側の継手８の一方と、後方の導管遮断装置Ａ
の前側の継手８の一方を連結ホースH2′で接続し
て、その前方の導管遮断装置Ａの前側の継手８に
接続したホースH2で、後方の導管遮断装置Ａの
後側における導管内圧を測定できるように準備し
ておく。さらに、後方の導管遮断装置Ａにおいて
他方の継手８をプラグなどで閉じて、前方の導管
遮断装置Ａの前側の継手８の他方に接続したホー
スH2で、前後の導管遮断装置Ａ間における導管
内への流体供給及び導管内圧測定を行えるように
準備しておく。
そして、導管Ｐのうち撤去導管部分の両側近く
の導管部分夫々をバルブ又はゴムバツグで遮断
し、撤去導管部分を撤去し、第４図に示すよう
に、残つた導管部分P′に新管P0を接続すると共
に、新管P0を膨張させた２個の弾性膜体２で遮断
し、他方の残つた導管部分P″をカツプで閉じ
る。
次に、ホースH2で両導管遮断装置Ａ間に流体
を供給して、例えば1500mmH2Oの流体を封入し、
その封入圧の変化をホースH2で測定して、両弾
性膜体２による遮断の良否を判定し、良好に遮断
されていればバルブを開くかゴムバツグを取外
す。尚、両導管遮断装置Ａ間の圧が上昇すれば後
方の弾性膜体２で、かつ、圧が下降すれば前方の
弾性膜体２で遮断不良がある。
次に、弾性膜体２を収縮させて新管P0の遊端側
に索具Ｗで移動させ、弾性膜体２を膨張させて新
管P0を遮断し、さらに、別の新管を接続し、この
工程の繰返しで必要本数の新管を接続していく。
第５図に示すように、最後の新管を接続した
後、その新管をカツプ１４で閉じ、バルブＶから
新管群の気密テストを行う。
最後に、カツプ１４を外し、導管遮断装置Ａを
取外し、導管部分P″と新管を接続する。
上記の工事において、第６図に示すように、新
管P0が彎曲していても、収縮状態の弾性膜体２が
前後の押え板３，４よりも引退すると共に、前後
中間部ほど引退量を大にして、弾性膜体２の新管
との摺接による摩損を生じないように構成してあ
る。
つまり、第８図に示すように、新管P0における
曲り部での対面交差角αが最大でも45度であるこ
とに鑑みて、両押え板３，４の管内接点間長さ
Ｌ、弾性膜体２の最大引退距離Ｘ、管径（150
mm，200mm，300mm）との相関を次表に示すように
設定すると、最大引退距離Ｘを小さくしながら曲
り部での弾性膜体２の新管P0との摺接を防止でき
る。
[Industrial Field of Application] The present invention is a device that can be moved within a transportation conduit and shut off the conduit at an arbitrary position, specifically, a device that can be freely inflated and deflated is attached to the outer periphery of a main body to which a moving operation rope is connected. A ring-shaped elastic membrane body is attached with press plates on the front and rear sides thereof, and a hose for inflation/deflation operation that communicates with the inside of the elastic membrane body is connected to the main body. The present invention relates to a mobile conduit interrupting device formed so as to be able to be pressed against the circumference. [Prior Art] Conventionally, as shown in FIG. 9, an annular elastic membrane 2 is inflated and contracted by supplying and discharging fluid through a hose H 1 to a main body 1 to which a rigging W for movement within a conduit P is connected. It was freely attached using presser plates 3a and 4a. [Problems to be Solved by the Invention] However, even when the elastic membrane body 2 is contracted, it protrudes toward the conduit P side beyond the outer peripheral edges of the holding plates 3a, 4a. The membrane body 2 is rubbed against the inner surface of the conduit P, and the elastic membrane body 2 has the drawback of being easily damaged by wear and tear due to the protrusions. Furthermore, when moving within the conduit P, if there is a step on the inner surface of the conduit P, there is a risk that the holding plate 3a on the rigging W side will get caught on the conduit P, making it difficult or impossible to move the equipment. However, there was a big drawback. An object of the present invention is to sufficiently prevent damage to the elastic membrane body due to movement within the conduit, and to enable the device to be pulled and moved smoothly and reliably even if there are steps on the inner surface of the conduit. [Means for Solving the Problems] The characteristic configuration of the present invention is that an elastic membrane body that can be freely expanded and contracted is attached to the outer periphery of a main body connected to a rigging by front and rear holding plates, and both holding plates are The membrane bodies are arranged relative to each other so that they are retracted from the outer peripheral edges of the holding plates toward the main body side due to contraction, and the elastic guide for getting over the step is in a state of protruding toward the extension side of the rigging and the rigging. They are distributed around the equipment and attached to the main body in such a manner that the distal end is located closer to the rigging, and the effects are as follows. [Operation] In other words, when the elastic membrane is moved within the conduit by tension from the rigging, the elastic membrane can be contracted and retracted from the outer periphery of the front and rear holding plates.
The elastic membrane body can be prevented from being rubbed against the conduit by the action of both presser plates as spacers, and the elastic membrane body can be sufficiently prevented from being abraded or damaged by cutting due to protrusions.
It has become possible to improve the durability of the elastic membrane and improve the reliability of conduit interruption using the elastic membrane. Furthermore, even if there is a step on the inner surface of the conduit, elastic guides are provided that protrude toward the rigging, are distributed around the rigging, and are oriented toward the rigging toward the tip, so the guide can be easily With this action, steps can be overcome smoothly and reliably, and the work of moving the device within the pipe can now be carried out easily and quickly. [Effects of the Invention] As a result, it has become possible to provide a mobile conduit disconnection device that is extremely useful in conduit construction and is even superior in all aspects of durability, reliability of conduit disconnection, and workability. [Example] Next, an example will be shown. As shown in FIGS. 1 and 2, a cylindrical main body 1
A moving operation rigging W such as a wire is connected to the inside of the main body 1 using a partition plate 9, a rod 10, and a swingable connector 11, and the tension of the rigging W allows the device to be moved into the gas transport conduit P. It is configured so that it can be moved. An elastic membrane body 2 that can be expanded and contracted is attached to the outer periphery of the main body 1 using front and rear press plates 3 and 4 and bolts 5 and 6.
A pair of hoses H1 for expanding and contracting the elastic membrane body 2 by supplying and discharging fluid are connected to the partition plate 9 while being fixed with a ring 11a, and the elastic membrane body 2, and the elastic membrane body 2 is configured to be in pressure contact with the entire inner circumference of the conduit P by expansion, so that the conduit P can be shut off. A ring-shaped protrusion 2a is formed on the outer peripheral surface of the elastic membrane 2 to improve the blocking effect. The elastic membrane body 2 and both presser plates 3 and 4 are arranged relative to each other so that the elastic membrane body 2 is retracted from the outer periphery of both presser plates 3 and 4 toward the main body 1 side due to contraction, and the elastic membrane body 2 is contracted. When moving within the conduit P, the elastic membrane body 2 is configured to be prevented from being rubbed against the conduit P by the action of both holding plates 3 and 4. A state in which two joints 7 for connecting the hose H 1 and the connecting hose H 1 ′ and two joints 8 for connecting the airtight test hose H 2 and the connecting hose H 2 ′ are located at the front and rear. And they are attached to the partition plate 9 in such a way that the ones lined up one after the other are in communication with each other. Elastic guides 12 made of steel wire bent into a V-shape for getting over a step are protruded in the extending direction of the rigging W and are distributed around the rigging W. It is attached to the main body 1 via the holding plate 3 while being located on the side of the tool W, and is configured to smoothly and reliably pass through the step on the inner surface of the conduit P by the action of the guide 12, and the guide 12 is long. Short ones are arranged alternately. Next, how to use the mobile conduit interrupter will be explained. As shown in FIG. 3, two conduit blocking devices A are connected by a bendable connector 13 for use.
In addition, the two elastic membrane bodies 2 are connected by a connecting hose H 1 ', and the hose H 1 is connected to the conduit cutoff device A in front.
Both elastic membrane bodies 2 are prepared so that they can be simultaneously expanded and contracted by supplying and discharging fluid, and the joint 7 located on the rear side of the rear conduit blocking device A is closed with a plug or the like. In addition, the front conduit blocking device A
One of the rear joints 8 and the rear conduit blocking device A
Connect one of the front fittings 8 of the unit with a connecting hose H 2 ′, and use the hose H 2 connected to the front fitting 8 of the conduit disconnection device A in front of the connecting hose H 2 ′ to check the internal pressure of the conduit at the rear side of the rear conduit disconnection device A. Be prepared to measure. Furthermore, the other joint 8 of the rear conduit breaker A is closed with a plug, etc., and the hose H 2 connected to the other of the front joint 8 of the front conduit breaker A is used to connect the conduit between the front and rear conduit breaker A. Prepare to supply fluid to the inside of the pipe and measure the internal pressure of the pipe. Then, each of the conduit sections near both sides of the removed conduit section of the conduit P is shut off with a valve or rubber bag, the removed conduit section is removed, and a new pipe P 0 is installed in the remaining conduit section P' as shown in Fig. 4. At the same time, the new pipe P 0 is cut off with the two expanded elastic membranes 2, and the other remaining pipe section P'' is closed with a cup. Next, the hose H 2 is used to connect the two pipe blocking devices A. Supply fluid to, for example, enclose a fluid of 1500 mmH 2 O,
The change in the sealing pressure is measured with the hose H2 to determine whether the two elastic membrane bodies 2 are blocking the water well or not. If the sealing pressure is good or not, the valve is opened or the rubber bag is removed. Note that if the pressure between the two conduit blocking devices A increases, there is a blocking failure in the rear elastic membrane 2, and if the pressure decreases, there is a blocking failure in the front elastic membrane 2. Next, the elastic membrane body 2 is contracted and moved to the free end side of the new pipe P 0 using the rigging W, the elastic membrane body 2 is expanded to block the new pipe P 0 , and then another new pipe is inserted. Connect the necessary number of new pipes by repeating this process. As shown in FIG. 5, after the last new pipe is connected, the new pipe is closed with a cup 14, and the new pipe group is tested for airtightness from the valve V. Finally, remove the cup 14, remove the conduit blocking device A, and connect the conduit section P'' to the new pipe. In the above construction, even if the new pipe P0 is curved as shown in Fig. 6, The elastic membrane body 2 in the contracted state is retracted more than the front and rear presser plates 3 and 4, and the amount of retraction is increased toward the front and rear middle portions to prevent wear and tear due to sliding contact between the elastic membrane body 2 and the new pipe. In other words, as shown in Fig. 8, considering that the face-to-face intersection angle α at the bend in the new pipe P 0 is 45 degrees at most, the Length L, maximum retirement distance X of elastic membrane 2, pipe diameter (150
mm, 200 mm, 300 mm) as shown in the table below, it is possible to prevent the elastic membrane body 2 from sliding against the new pipe P 0 at the bend while reducing the maximum retirement distance X.
【表】【table】
次に別実施例を説明する。
本発明による導管遮断装置は、気密テストを行
う必要のない場合、又は他の手段により気密テス
トを行う場合には、単独で用いてもよく、又、管
入替工法以外に用いてもよい。
移動を円滑化するため押え板３，４に夫々周方
向複数個のローラ群を設けてもよい。
弾性膜体２を膨張させるに、水、油などの各種
液体や空気などを利用できるが、万一漏れが生じ
たときの危険性、後処理を無難なものとするには
水が最も適しており、又、体積変化がなくて迅速
強力に気密遮断できる液体の方が気体よりも良
い。
Next, another embodiment will be described. The conduit interrupting device according to the present invention may be used alone when there is no need to perform an airtightness test or when an airtightness test is performed by other means, or may be used in a method other than the pipe replacement method. In order to facilitate the movement, a plurality of roller groups may be provided on each of the presser plates 3 and 4 in the circumferential direction. Various liquids such as water and oil, air, etc. can be used to inflate the elastic membrane 2, but water is most suitable in order to avoid the risk of leakage and to ensure safe post-treatment. Moreover, liquids are better than gases because they do not change volume and can provide a quick and strong hermetic seal.
第１図ないし第８図は本発明の実施例を示し、
第１図は導管遮断装置の断面図、第２図は導管遮
断装置の一部省略正面図、第３図は導管遮断装置
の使用状態の側面図、第４図及び第５図は導管遮
断装置の使用方法の説明図、第６図及び第７図は
導管遮断装置の導管内移動状態の説明図、第８図
は弾性膜体の寸法設定に対する説明図である。第
９図は従来例の断面図である。
１……本体、２……弾性膜体、３，４……押え
板、１２……弾性ガイド、H1……ホース、Ｐ…
…導管、Ｗ……索具。
1 to 8 show embodiments of the present invention,
Fig. 1 is a sectional view of the conduit breaker, Fig. 2 is a partially omitted front view of the duct breaker, Fig. 3 is a side view of the duct breaker in use, and Figs. 4 and 5 are the duct cutter. FIG. 6 and FIG. 7 are explanatory diagrams of how the conduit blocking device is moved within the conduit, and FIG. 8 is an explanatory diagram of how to set the dimensions of the elastic membrane body. FIG. 9 is a sectional view of a conventional example. 1...Main body, 2...Elastic membrane body, 3, 4...Press plate, 12...Elastic guide, H 1 ...Hose, P...
... Conduit, W... Rigging.
Claims (1)
に、膨張収縮操作自在な環状の弾性膜体２をその
前後の押え板３，４で取付け、前記弾性膜体２の
内部に連通する膨張収縮操作用のホースH1を前
記本体１に連結し、前記弾性膜体２を膨張により
輸送用導管Ｐの内面全周に圧接できるように形成
した移動式導管遮断装置であつて、前記弾性膜体
２と前記両押え板３，４を、その弾性膜体２が収
縮により前記両押え板３，４の外周縁よりも前記
本体１側に引退するように相対配置し、段差乗り
越え用の弾性ガイド１２を、前記索具Ｗの延出側
に突出する状態で、かつその索具Ｗの周りに分散
配置して、さらに先端側ほど前記索具Ｗ側に位置
する姿勢で前記本体１に取付けてある移動式導管
遮断装置。1. An annular elastic membrane body 2 that can be freely expanded and deflated is attached to the outer periphery of the main body 1 to which the moving operation rope W is connected, with press plates 3 and 4 on the front and rear thereof, and an inflatable membrane body 2 that communicates with the inside of the elastic membrane body 2 is attached. A movable conduit cutoff device in which a hose H1 for contraction operation is connected to the main body 1, and the elastic membrane body 2 is formed so that it can be pressed against the entire inner circumference of the transportation conduit P by expansion, the elastic membrane The body 2 and the presser plates 3 and 4 are arranged relative to each other so that the elastic membrane 2 is retracted toward the main body 1 side than the outer periphery of the presser plates 3 and 4 due to contraction. The guides 12 are attached to the main body 1 in a state in which they protrude toward the extension side of the rigging W, are distributed around the rigging W, and are positioned closer to the rigging W toward the tip. A mobile conduit interrupter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16710079A JPS5690187A (en) | 1979-12-21 | 1979-12-21 | Movable cuttoff device of conduit pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16710079A JPS5690187A (en) | 1979-12-21 | 1979-12-21 | Movable cuttoff device of conduit pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5690187A JPS5690187A (en) | 1981-07-22 |
| JPS6258435B2 true JPS6258435B2 (en) | 1987-12-05 |
Family
ID=15843418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16710079A Granted JPS5690187A (en) | 1979-12-21 | 1979-12-21 | Movable cuttoff device of conduit pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5690187A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8307856B2 (en) * | 2007-11-07 | 2012-11-13 | Tdw Delaware Inc. | Double block and bleed plug |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48102448A (en) * | 1972-04-13 | 1973-12-22 | ||
| JPS521533A (en) * | 1975-06-23 | 1977-01-07 | Ishikawajima Harima Heavy Ind | Method of cuttinggoff the fluid in pipes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53105029U (en) * | 1977-01-24 | 1978-08-24 |
-
1979
- 1979-12-21 JP JP16710079A patent/JPS5690187A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48102448A (en) * | 1972-04-13 | 1973-12-22 | ||
| JPS521533A (en) * | 1975-06-23 | 1977-01-07 | Ishikawajima Harima Heavy Ind | Method of cuttinggoff the fluid in pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5690187A (en) | 1981-07-22 |
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