JPH03217510A - Temporary blocking device for outlet pipe - Google Patents
Temporary blocking device for outlet pipeInfo
- Publication number
- JPH03217510A JPH03217510A JP2013972A JP1397290A JPH03217510A JP H03217510 A JPH03217510 A JP H03217510A JP 2013972 A JP2013972 A JP 2013972A JP 1397290 A JP1397290 A JP 1397290A JP H03217510 A JPH03217510 A JP H03217510A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- inlet
- discharge pipe
- outlet pipe
- bag
- 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
Links
- 230000000903 blocking effect Effects 0.000 title 1
- 239000012530 fluid Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 230000008439 repair process Effects 0.000 description 6
- 230000009189 diving Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はダムなどの放流管を補修点検するための放流管
仮締切装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a temporary closure device for a discharge pipe for repairing and inspecting a discharge pipe such as a dam.
従来の技術
たとえばダムの放流管を所定期間経過後に補修点検する
場合、流漢調整ゲートの下流側は流量調整ゲートを締切
り人が放流管内に入って作業することができるが、ｉｉ
ｉ調整ゲート上流側入口部は潜水による補修作業に頼っ
ていた。また、池に鉄納ケーソン等による仮細切もめる
。Conventional technology For example, when repairing and inspecting a dam's discharge pipe after a predetermined period of time, the downstream side of the flow adjustment gate is closed off so that a person can enter the discharge pipe and work.
The upstream entrance of the i-adjustment gate had to be repaired by diving. In addition, the pond will be temporarily cut into small pieces using iron caissons, etc.
発明が解決しまうとする課題
そのため、入口部の桶修作業は危険な作業となり、しか
も３０ｍ以上の水深では潜水作業ができ丁、補修を行う
ことができなかった。鉄鋼ケーソンの場合には、数１０
ｔ〜３００ｔの設備を取扱い、工期も６ケ月以上必要と
する。Problems to be Solved by the Invention As a result, repair work on the tub at the entrance is dangerous work, and furthermore, diving work cannot be performed at depths of 30 meters or more, and repairs cannot be performed. In the case of steel caissons, the number 10
The company handles equipment that weighs between 300 and 200 tons, and requires a construction period of more than 6 months.
本発明は上記問題点を解決して、高水深であっても安全
かつ短期間で放流管入口部の補修、点検作業が行える放
流管仮締切装置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a temporary closure device for a discharge pipe that allows repair and inspection of the discharge pipe inlet safely and in a short period of time even at high water depths.
課題を解決するための手段
上記問題点を解決するために本発明は、昇降自在に吊り
下げられて放流管入口に係止可能なアンカーフレームに
、放流管側に突出して入口Ｃこ嵌合可能な位置決めガイ
ドを設け、位置決めガイド内側のアンカーフレームに、
放流管内径よりも大径に膨張可能な柱状耐圧袋を連結し
、この圧力袋に圧力流体供給管を接続したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an anchor frame that is suspended vertically and can be locked to the inlet of the discharge pipe, and that protrudes toward the discharge pipe side and can be fitted to the inlet C. A positioning guide is provided, and the anchor frame inside the positioning guide is
A columnar pressure bag that can be expanded to a diameter larger than the inner diameter of the discharge pipe is connected, and a pressure fluid supply pipe is connected to this pressure bag.
作用
上記構成において、耐圧袋を折りたたんで固定したアン
カーフレームを吊り下げて放流管入口面方まで下降し、
放旅管入口偏に移動して位置決めカイドを人口に嵌合し
、圧力泥体供給管から圧力流体を耐圧袋内に注入して耐
圧袋を膨ませ放乳管入口部を閉塞する。そして、放流管
への耐圧袋の接触圧を止水に要する圧力Ｅこまで扁める
ことにより、放流管入口部を止水することができる。こ
れ｛こより、容易に放流管の補一点検作菜か行える。Effect In the above configuration, the anchor frame on which the pressure bag is folded and fixed is suspended and lowered to the side of the outlet pipe inlet,
Move toward the entrance of the discharge tube, fit the positioning guide to the breast, and inject pressure fluid into the pressure bag from the pressure mud supply pipe to inflate the pressure bag and close the entrance of the discharge tube. Then, by reducing the contact pressure of the pressure bag to the discharge pipe to a pressure E required for stopping water, it is possible to shut off water at the inlet of the discharge pipe. This makes it easier to carry out supplementary inspections of the discharge pipe.
実施例 以下本発明の一実施例を図面に基づいて説明する。Example An embodiment of the present invention will be described below based on the drawings.
第２図において、１はダム２の底部に貫通された放ゐ管
で、中間部に２機の流諷調整ゲー１− （ＵＶバルブ）
３Ａ，３Ｂが配設される。４は放旅管１の入口１ａを仮
締切りする仮締切装賑で、たとえばクレーン車５にワイ
ヤロープ６を介して昇降自在に吊り下げられて放施管１
の入口周囲の周壁２ａに係止される鋼製のアンカーフレ
ーム７と、このアンカーフレーム５に連結されて入口１
ａを閉塞する耐圧袋８とを備えている。In Figure 2, 1 is a release pipe penetrated through the bottom of the dam 2, and two flow adjustment gauges 1- (UV valves) are installed in the middle.
3A and 3B are arranged. Reference numeral 4 denotes a temporary cofferdam for temporarily closing the entrance 1a of the release pipe 1. For example, the release pipe 1 is suspended from a crane vehicle 5 via a wire rope 6 so as to be able to rise and fall freely.
An anchor frame 7 made of steel is fixed to the peripheral wall 2a around the entrance of
It is equipped with a pressure-resistant bag 8 that closes a.
すなわら、弟１図、第３図、第４図に示すように、仮締
切装置４のアンカーフレーム７は正面視が３角形状の枠
組部７ａと、その各コーナ一部から放射方向に伸びる係
止部７ｂからなり、上端に位置する係止部７ｂに吊下用
ワイヤローブ６取付用の吊下フック９が取付けらロる。In other words, as shown in Figures 1, 3, and 4, the anchor frame 7 of the temporary cofferdam 4 has a triangular frame part 7a when viewed from the front, and a frame part 7a that extends radially from each corner of the frame part 7a. It consists of an extending locking portion 7b, and a hanging hook 9 for attaching the hanging wire robe 6 is attached to the locking portion 7b located at the upper end.
このアンカーフレーム７の各コーナ一部背四には放丘管
人口１ａに嵌合する位置決ガイド１０がそれぞｎ突設さ
れ、位置決めガイド１０の内側で枠組部７ａ背向には複
数本のアンカーワイヤーｌ１を介して耐圧袋８を連結す
る複数の連結フック１２が取付けられる。前記耐圧袋８
は、たとえば放流管１の断面に対応して円柱状（角柱状
でもよい）に形成され、局面部ｓａＯ）＠端はｎ面部８
ｂより前方に伸びる連結リング部８ｃが形成さｎてアン
カーワイヤー１１が連結されるとともに、この連結リン
グ部８Ｃと含０曲部８ｂとで受圧部８ｄが形成される。Positioning guides 10 that fit into the conduit tubes 1a are protruded from a portion of the back of each corner of the anchor frame 7, and a plurality of A plurality of connecting hooks 12 are attached to connect the pressure bags 8 via anchor wires l1. The pressure bag 8
is formed, for example, in a cylindrical shape (or may be a prismatic shape) corresponding to the cross section of the discharge pipe 1, and the curved surface part saO) @ the end is the n-face part 8
A connecting ring portion 8c extending forward from b is formed to which the anchor wire 11 is connected, and a pressure receiving portion 8d is formed by this connecting ring portion 8C and the bent portion 8b.
また、後間部８ｅ手前の周而部８ａには放流管１の内面
に圧接されるゴム製の止水リング１３が固着され、この
止水リング１３は、第５図に示すように、外周面に突条
部１３ａが形成されている。さら〔こ、この耐圧袋８は
外径か放流管入口部１ａの内径より大きく膨張可能に形
成され、材質は高強度鎮雑（ケブラー繊維）からなる。Further, a rubber water stop ring 13 that is pressed against the inner surface of the discharge pipe 1 is fixed to the peripheral part 8a in front of the rear part 8e. A protrusion 13a is formed on the surface. Furthermore, this pressure-resistant bag 8 is formed to be able to expand so that its outer diameter is larger than the inner diameter of the discharge pipe inlet portion 1a, and is made of a high-strength material (Kevlar fiber).
なお前記アンカーワイヤー１１も高強度繊維からなり高
強度を有している。Note that the anchor wire 11 is also made of high-strength fiber and has high strength.
この耐圧袋８には前面部８ｂ中央に可撓性の圧力水供給
ホース１４が接続され、この圧力水供給ホース１４の基
端部はダム２の頂部に配設された圧力水供給ユニノト１
５に接続さロる。A flexible pressure water supply hose 14 is connected to the center of the front part 8b of the pressure bag 8, and the base end of this pressure water supply hose 14 is connected to a pressure water supply unit 1 disposed at the top of the dam 2.
Connected to 5.
次に、弟６図（ａ）〜（ｄ）に基づいてこの仮締切装置
４の使用方法を説明する。Next, a method of using this temporary closing device 4 will be explained based on FIGS. 6(a) to 6(d).
１．耐圧袋８を第４図に芙線で示すようにその局面部８
ａを折りたたんでアンカーフレーム７に公知の手段（図
示せす）で固定し、そしてクレーン車５のクレーンによ
りワイヤローブ６を介して吊り下げ降下する。この時、
流量調整ゲート３Ａ．３Ｂは閉止してある。〔第６図（
ａ）〕
２アンカーフレーム７を放流管入口ｌａｆｒｒＪ方まで
下ろし、アンカーフレーム７を入口ｌａ側移動して位置
決めガイド１０を入口１ａに嵌入させるとともに耐圧袋
８を仮固定状態とする。〔第６図（ｂ）〕３．圧力水供
給ユニッ｝１５から圧力水供給ホース１４を介して圧力
水を耐圧袋８内に注入してアンカーフレームと耐圧袋８
の仮固定を解除し、さらに耐圧袋８を膨ませる。そして
、ある程度耐圧袋８が膨んだ状態で流量調整ゲート３Ａ
，３Ｂを少し開けて放流管１内に流れを発生させる。そ
して、この流れによる圧力差を利用し受圧部８ｄで水圧
を受けさせて耐圧袋８を下流側に移動させ、アンカーワ
イヤ１ｌを緊張させる。〔第６図（Ｃ）〕↓さらに、耐
圧袋８内に注水を続け、耐圧袋８と放流管１との接触面
圧を止水可能な囲圧にまで高める。そして、扼Ｎ調整ゲ
ート３Ａ，３Ｂを一いて排水した後、放派管１円に作業
員が入り、放流管１やゲート設備の点検や補修を行う。1. The curved part 8 of the pressure bag 8 is shown in FIG.
A is folded and fixed to the anchor frame 7 by known means (not shown), and then suspended and lowered via the wire lobes 6 by the crane of the mobile crane 5. At this time,
Flow rate adjustment gate 3A. 3B is closed. [Figure 6 (
a)] 2 Lower the anchor frame 7 to the discharge pipe entrance lafrrJ side, move the anchor frame 7 toward the entrance la, fit the positioning guide 10 into the entrance 1a, and temporarily fix the pressure bag 8. [Figure 6(b)] 3. Pressure water is injected into the pressure bag 8 from the pressure water supply unit 15 through the pressure water supply hose 14 to connect the anchor frame and the pressure bag 8.
The temporary fixation is released, and the pressure bag 8 is further inflated. Then, with the pressure bag 8 inflated to some extent, the flow rate adjustment gate 3A
, 3B are slightly opened to generate a flow inside the discharge pipe 1. Then, by utilizing the pressure difference caused by this flow, the pressure receiving part 8d receives water pressure, moves the pressure bag 8 downstream, and tensions the anchor wire 1l. [Figure 6 (C)] ↓Furthermore, water is continued to be poured into the pressure bag 8 to increase the contact surface pressure between the pressure bag 8 and the discharge pipe 1 to an ambient pressure that can stop water. After draining the water through the N adjustment gates 3A and 3B, a worker enters the discharge pipe 1 and inspects and repairs the discharge pipe 1 and the gate equipment.
なお、アンカーフレーム７の位置決めや耐圧袋８の離脱
、放流管１内への装填、袖修作業中は水中点検用ロボッ
トなどに取付けたテレビカメラ１６によって監視するこ
とにより、作業性や安全性をより向上できる。In addition, during the positioning of the anchor frame 7, detachment of the pressure bag 8, loading into the discharge pipe 1, and repair work, work efficiency and safety are monitored by monitoring with a television camera 16 attached to an underwater inspection robot, etc. You can improve even more.
発明の効果
以上に述べたごとく本発明によＣば、アンカーフレーム
を放ｔＡｉ管入口に位置決めして耐圧袋を放施管入口部
内に挿入し、耐圧袋内に圧力流体を注入して耐圧袋を膨
ませ、放流管入口部内を閉塞して耐圧袋の内圧を、耐圧
袋と放沌管との接触圧を止水司能なまでに高めることに
より、放流管入口部を確実ζこ仮締切できる。Effects of the Invention As described above, according to the present invention, the anchor frame is positioned at the entrance of the release pipe, the pressure bag is inserted into the entrance of the release pipe, and the pressure fluid is injected into the pressure bag to create the pressure bag. By inflating the inlet of the discharge pipe and closing the inlet of the discharge pipe to increase the internal pressure of the pressure bag and the contact pressure between the pressure bag and the Chaos pipe to the point where water can be stopped, the inlet of the discharge pipe can be securely temporarily closed off. can.
したかって、（１）放流管入口都に開閉ゲートがなかっ
たり、また囲閉ゲートが腐食して閉止できない場合にも
、放流管の点検が可能となる。Therefore, (1) the discharge pipe can be inspected even if there is no opening/closing gate at the discharge pipe entrance or if the enclosure gate is corroded and cannot be closed.
（２）潜水による作業がないので、安全性か向上できる
とともに、３０ ｍ以上の大深度でも補修作業が可能と
なる。（３冫仮締切装置をきわめてコンパクトで軽斌に
できるので、放流管の規模や設置場所にルリ約かなく使
用できる。また、工期も短期間（２週間程度）ですむ。(2) Since there is no need for diving work, safety can be improved and repair work can be carried out at depths of 30 m or more. (The temporary cofferdam system is extremely compact and easy to use, so it can be used without any restrictions on the size or installation location of the discharge pipe. Also, the construction period is short (about two weeks).
図ｍｌは本発明の一実施例を示し、第１図は仮締切装置
の斜視図、第２図は同便用状態図、第３図は同正面図、
第４図は第３図に示丁１−１断面図、第５囚は止水リン
グの断面図、第６図（ａ）〜（ｄ）は仮締切装置の使用
状態説明図である。
１・・・放汎管、１ａ・・・入口、２・・・ダム、３Ａ
，３Ｂ・・・流量調整ゲート、４・・・仮締切装置、５
・・・クレーン車、６・・ワイヤロープ、７・・・アン
カーフレーム、８−・・耐圧袋、１０・・・位置決めカ
イド、１ｌ・・・アンカーワイヤ、１３・・・止水リン
グ、ｌ４・・・圧力水供給ホース、ｌ５・・圧力水供給
ユニット。Figure ml shows one embodiment of the present invention, Figure 1 is a perspective view of the temporary closing device, Figure 2 is a diagram of the same state for convenience, Figure 3 is a front view of the same,
4 is a sectional view taken along line 1-1 shown in FIG. 3, the fifth figure is a sectional view of the water stop ring, and FIGS. 6(a) to 6(d) are explanatory diagrams of the use state of the temporary closing device. 1... Radiation pipe, 1a... Inlet, 2... Dam, 3A
, 3B...Flow rate adjustment gate, 4...Temporary closing device, 5
...Crane truck, 6..Wire rope, 7..Anchor frame, 8..Pressure bag, 10..Positioning guide, 1l..Anchor wire, 13..Water stop ring, 1.4. ...Pressure water supply hose, l5...Pressure water supply unit.
Claims (1)
アンカーフレームに、放流管側に突出して入口に嵌合可
能な位置決めガイドを設け、位置決めガイド内側のアン
カーフレームに、放流管内径よりも大径に膨張可能な柱
状耐圧袋を連結し、この圧力袋に圧力流体供給管を接続
したことを特徴とする放流管の仮締切装置。1. A positioning guide that protrudes toward the discharge pipe side and can fit into the inlet is provided on the anchor frame that can be hung up and down freely and can be locked at the discharge pipe inlet. 1. A temporary closure device for a discharge pipe, characterized in that a columnar pressure bag that can be expanded to a large diameter is connected to the pressure bag, and a pressure fluid supply pipe is connected to the pressure bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013972A JPH07122255B2 (en) | 1990-01-24 | 1990-01-24 | Temporary shut-off device for discharge pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013972A JPH07122255B2 (en) | 1990-01-24 | 1990-01-24 | Temporary shut-off device for discharge pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03217510A true JPH03217510A (en) | 1991-09-25 |
| JPH07122255B2 JPH07122255B2 (en) | 1995-12-25 |
Family
ID=11848138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013972A Expired - Lifetime JPH07122255B2 (en) | 1990-01-24 | 1990-01-24 | Temporary shut-off device for discharge pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07122255B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015017395A (en) * | 2013-07-10 | 2015-01-29 | 前澤工業株式会社 | Cut-off device of water intake |
| CN105421313A (en) * | 2015-12-28 | 2016-03-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and device for water filling and pressure balance of extra-high-head gate |
-
1990
- 1990-01-24 JP JP2013972A patent/JPH07122255B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015017395A (en) * | 2013-07-10 | 2015-01-29 | 前澤工業株式会社 | Cut-off device of water intake |
| CN105421313A (en) * | 2015-12-28 | 2016-03-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and device for water filling and pressure balance of extra-high-head gate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07122255B2 (en) | 1995-12-25 |
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