JP3404073B2 - Cleaning method for the inner surface of existing pipes - Google Patents
Cleaning method for the inner surface of existing pipesInfo
- Publication number
- JP3404073B2 JP3404073B2 JP14079993A JP14079993A JP3404073B2 JP 3404073 B2 JP3404073 B2 JP 3404073B2 JP 14079993 A JP14079993 A JP 14079993A JP 14079993 A JP14079993 A JP 14079993A JP 3404073 B2 JP3404073 B2 JP 3404073B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- pig
- abrasive
- cleaning
- powdery
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、粉状研磨剤を気流によ
り吸引して管内を移動させ、管内を移動するピグの外周
と管内面との狭い間隙を研磨剤流が通過するときに管内
面を清掃するようにした既設管の管内面クリーニング工
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder abrasive which is sucked by an air flow to move inside the pipe and when the abrasive flow passes through a narrow gap between the outer circumference of the pig moving inside the pipe and the inner surface of the pipe. The present invention relates to a method for cleaning the inner surface of an existing pipe whose surface is to be cleaned.
【０００２】[0002]
【従来の技術】従来、地下に埋設されているガス管路な
どの既設管を補修する際、特に管内面に樹脂ライニング
を施すような場合には、ライニング施工に先だって管内
をクリーニングする必要があり、そのクリーニング工法
として各種のものが知られている。その工法として、例
えば高圧空気流に研磨剤を混入して管内を一方から他方
に向けて流動させる工法、高圧水流に研磨剤を混入して
管内を一方から他方に向けて流動させる工法、などがあ
る。2. Description of the Related Art Conventionally, when repairing an existing pipe such as a gas pipe buried underground, it is necessary to clean the inside of the pipe prior to lining, especially when resin lining is applied to the inner surface of the pipe. Various cleaning methods are known. As the construction method, for example, a construction method in which an abrasive is mixed in a high-pressure air stream to flow in the pipe from one side to the other, a construction method in which an abrasive is mixed in a high-pressure water stream to flow in the pipe from one to the other, etc. is there.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記従来技
術の工法にあっては、空気流及び水流がそれぞれ高圧で
あるため、管路そのものの耐圧性が乏しい場合には、管
路自体を破損する恐れがある。上記両工法とも研磨能力
が過大であり、管内面の汚れを除去し清掃するほか、管
内壁そのものを研磨してしまう可能性がある。これらの
ことから、硅砂等の研磨剤を低圧空気流または水流で流
動させて清掃する場合には、管内壁を研磨してしまう可
能性は少なくなるが、管壁付着物を除去する清掃能力が
劣ることになる、といった各種の問題点があった。本発
明は、上記の問題点を解決することを目的になされたも
のである。By the way, in the above-mentioned prior art construction method, since the air flow and the water flow are at high pressure respectively, if the pressure resistance of the pipeline itself is poor, the pipeline itself is damaged. There is a fear. Both of the above methods have excessive polishing ability, and there is a possibility that the inner wall of the pipe itself may be polished, in addition to removing dirt and cleaning the inner surface of the pipe. For these reasons, when cleaning with sand sand or other abrasives using a low-pressure air stream or water stream, the possibility of polishing the inner wall of the pipe is reduced, but the cleaning ability to remove deposits on the pipe wall is reduced. There were various problems such as being inferior. The present invention is intended to solve the above problems.
【０００４】[0004]
【課題を解決するための手段】上記の目的を達成するた
めに本発明は、
(1) 既設配管の一端側に粉状研磨剤をほぼ所定量ずつ供
給し、この粉状研磨剤を管の他端側から吸引して管内を
気流により移動させ、粉状研磨剤が移動する管内に、管
内面と狭い間隙を有するピグを管の一方に移動させ、ピ
グと管内面との狭い間隙を粉状研磨剤流が集中移動する
ことにより管内面を清掃するクリーニング工法であっ
て、ピグの後部と胴部の表面に連続して螺旋部を形成
し、ピグの外周面と管内面との狭い間隙を集中移動する
紛状研磨剤流に、渦流を発生させるようにしたこと、Means for Solving the Problems The present invention to achieve the above object, (1) is supplied to one end of the existing piping powdery abrasive by nearly a predetermined amount, the tube the powdery abrasive Of the other end of the pipe is moved by the air flow in the pipe, and a pig having a narrow gap with the pipe inner surface is moved to one of the pipes in the pipe where the powdery abrasive moves, so that the narrow gap between the pig and the pipe inner surface is reduced. It is a cleaning method that cleans the inner surface of the pipe by the concentrated movement of the powdery abrasive flow.
Form a spiral part continuously on the back of the pig and the surface of the body
The concentrated movement in the narrow gap between the outer surface of the pig and the inner surface of the pipe.
A vortex flow was generated in the powder abrasive flow ,
【０００５】(2) 既設配管の一端側に粉状研磨剤をほぼ
所定量ずつ供給し、この粉状研磨剤を管の他端側から吸
引して管内を気流により移動させ、粉状研磨剤が移動す
る管内に、管内面と狭い間隙を有するピグを管の一方に
移動させ、ピグと管内面との狭い間隙を粉状研磨剤流が
集中移動することにより管内面を清掃するクリーニング
工法であって、ピグの胴部の前後位置に支持脚を設け、
ピグを、その外周面と管内面との間隙をほぼ一定にして
移動させるようにしたこと、をそれぞれ特徴とする。(2) Almost all of the powdery abrasive is applied to one end of the existing pipe.
Supply a specified amount at a time, and absorb this powdery abrasive from the other end of the pipe.
Pull to move inside the pipe by air flow, and powder abrasive moves
A pig with a narrow gap with the inner surface of the pipe
Move the powder and the powdery abrasive flow through the narrow gap between the pig and the inner surface of the pipe.
Cleaning to clean the inner surface of the pipe by moving intensively
It is a construction method, providing support legs at the front and rear positions of the body of the pig,
The pig, it has be moved to a substantially constant gap between the outer peripheral surface and the inner surface, and wherein, respectively.
【０００６】[0006]
【作用】上記の手段により本発明の既設管の管内面クリ
ーニング工法は、以下の作用を行う。
管の一端側に粉状研磨剤をほぼ所定量ずつ供給し、
この粉状研磨剤を管の他端側から吸引して管内を気流に
より移動させ、粉状研磨剤が移動する管内に、管内面と
狭い間隙を有するピグを管の一方に移動させ、ピグと管
内面との狭い間隙を粉状研磨剤流が集中移動することに
より管内面を清掃するようにしたので、粉状研磨剤流は
ピグの前後では比較的低速、低密度で移動し、ピグと管
内面との狭い間隙を集中移動するときにのみ研磨剤の密
度が高まると共に、高速で移動して効率のよい清掃が行
われる。According to the above-mentioned means, the method for cleaning the inner surface of the existing pipe according to the present invention has the following effects. Supply the powdered abrasive to the one end side of the tube by a predetermined amount,
This powdery abrasive is sucked from the other end side of the tube and moved by the air flow in the tube, and a pig having a narrow gap between the tube inner surface and the tube is moved to one side of the tube in the tube where the powdery abrasive moves. Since the powdery abrasive flow is concentrated in the narrow gap with the inner surface of the pipe to clean the inner surface of the pipe, the powdery abrasive flow moves at a relatively low speed and low density before and after the pig. The density of the abrasive increases only when it is intensively moved in a narrow gap with the inner surface of the pipe, and it moves at high speed for efficient cleaning.
【０００７】 ピグを、その外周面と管内面との間隔
をほぼ一定にして移動させるようにしたので、研磨剤流
は管の内面とほぼ均等に接し、管の全周をムラなく掃除
する。 ピグの外周面と管内面との狭い間隙を集中移
動する研磨剤流に、渦流を発生させるようにしたので、
研磨剤流が長い距離にわたって管内面と接することにな
り、効率よく清掃する。 Since the pig is moved with a substantially constant distance between the outer peripheral surface and the inner surface of the pipe, the abrasive flow contacts the inner surface of the pipe almost uniformly, and the entire circumference of the pipe is uniformly cleaned. /> you. The narrow gap between the outer peripheral surface and the inner surface of the pin grayed the abrasive flow to focus movement, since so as to generate vortices,
Will be in contact with the inner surface abrasive flow over long distances, it cleaned efficiently.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面に基づいて具体
的に説明する。図１において、符号１は地下に埋設され
ているガス管路のような既設管で、この既設管１は、補
修すべき管路の両端部を地上から掘削して露出させ、そ
の一端側に硅砂等の固形粉末からなる粉状研磨剤Ｋを収
容する研磨剤収容タンク２を接続し、研磨剤Ｋをほぼ所
定量ずつ連続あるいは間欠に供給するようにしている。
既設管１の他端側には、真空吸引装置兼粉状研磨剤・清
掃屑回収装置３が接続され、粉状研磨剤Ｋを吸引して管
内を空気流により移動させるようにしている。真空吸引
装置兼粉状研磨剤・清掃屑回収装置３には真空ポンプと
共にダストトラップを備えている。Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1, reference numeral 1 is an existing pipe such as a gas pipe buried underground, and the existing pipe 1 is formed by excavating both ends of the pipe to be repaired from the ground and exposing it to one end side thereof. The polishing agent storage tank 2 for storing the powdery polishing agent K made of solid powder such as silica sand is connected so that the polishing agent K is continuously or intermittently supplied in substantially predetermined amounts.
A vacuum suction device and a powdery abrasive / cleaning debris recovery device 3 are connected to the other end of the existing pipe 1, and the powdery abrasive K is sucked and moved in the pipe by an air flow. The vacuum suction device and the powdery abrasive / cleaning dust collecting device 3 are equipped with a vacuum pump and a dust trap.
【０００９】上記吸引気流により粉状研磨剤Ｋが流動す
る管内に、前後にワイヤ４を接続してワイヤ挿通孔４
ａ，４ｂを通って管外から一方に牽引されて管内を一方
に移動するクリーニング用ピグ５が設けられている。こ
のクリーニング用ピグ５は、図２及び図３に示すよう
に、ワイヤ４に縒り戻し６を介して連結され、円筒状の
胴部７の前後に、円錐状の後部先鋭部８と前部先鋭部９
とを一体的に結合して構成し、胴部７の外周面と管内面
との間に狭い間隙Ｓを有している。そして、この狭い間
隙Ｓを粉状研磨剤Ｋ流が集中移動することにより管内面
に付着している付着物Ｄを除去し、清掃するようにして
いる。The wire 4 is connected to the front and rear of the inside of the tube in which the powdery abrasive K flows by the suction airflow, and the wire insertion hole 4 is inserted.
A cleaning pig 5 is provided which is pulled from the outside of the pipe to one side through a and 4b and moves to the inside of the pipe to one side. As shown in FIGS. 2 and 3, the cleaning pig 5 is connected to the wire 4 through a twisting back 6, and is provided with a conical rear sharpened portion 8 and a front sharpened portion before and after the cylindrical body portion 7. Part 9
Are integrally connected to each other, and a narrow gap S is provided between the outer peripheral surface of the body portion 7 and the inner surface of the tube. Then, the powdery abrasive K flow intensively moves through the narrow gap S to remove and clean the adhering matter D adhering to the inner surface of the pipe.
【００１０】クリーニング用ピグ５は、後部先鋭部と胴
部の表面に、連続して螺旋部１０，１０…を形成し、ピ
グ５の外周面と管内面との狭い間隙Ｓを集中移動する研
磨剤Ｋ流に渦流を発生させるようにしている。 [0010] pig cleaning 5, the surface after part sharpened tip and the body, the spiral portion 10, 10 ... to the continuously formed, focus moves a narrow gap S between the outer peripheral surface and the inner surface of the pig 5 abrasives K streams that are so as to generate vortices.
【００１１】また、クリーニング用ピグ５には、図４及
び図５に示すように、その胴部の外周面と既設管１の内
面との間隔をほぼ一定にして移動させるために、胴部の
前後位置から四方に支持脚１６，１６…を設けている。
この支持脚１６，１６…は図４に示すように、ワイヤ４
により矢印方向の一方のみに移動するように設けられて
いるが、この支持脚１６，１６…に代えて、図６に示す
双方向移動支持脚１７，１７…にしてもよいものであ
る。この双方向移動支持脚１７，１７…を設けると図６
に示すように、既設管１に対して前後いずれの方向にも
移動可能となる。 Further, as shown in FIG. 4 and FIG. 5 , the cleaning pig 5 has a body portion for moving the outer peripheral surface of the body portion and the inner surface of the existing pipe 1 with a substantially constant distance. Support legs 16, 16 ... Are provided in four directions from the front-rear position.
As shown in FIG. 4 , the support legs 16, 16 ...
Are provided so as to move in only one direction of the arrow, but the bidirectional movement support legs 17, 17 shown in FIG. 6 may be used in place of the support legs 16, 16. When the two-way mobile support legs 17, 17 ... to provide 6
As shown in, that Do movable in either direction back and forth with respect to the existing pipe 1.
【００１２】次に、上記のように構成された実施例の作
用について説明する。既設管１の一端側に接続された研
磨剤収容タンク２から粉状研磨剤Ｋがほぼ所定量ずつ連
続あるいは間欠に排出，供給され、この研磨剤Ｋは、既
設管１の他端側に接続された真空吸引装置兼粉状研磨剤
・清掃屑回収装置３により吸引されて管内を空気流とな
って移動する。この研磨剤Ｋ流が流動する管内にはクリ
ーニング用ピグ５がワイヤ４により牽引され、縒り戻し
６，６により周方向に回転することなく矢印方向に移動
しており、研磨剤Ｋ流がピグ５位置に達すると、ピグ５
の胴部７の外周面と管内面との間の狭い間隙Ｓを集中通
過することにより、研磨剤Ｋの密度が高くなり、かつ流
速も早くなって管内面に付着している付着物Ｄを除去、
清掃する。ピグ５を通過した研磨剤Ｋ及び除去された付
着物Ｄは真空吸引装置兼粉状研磨剤・清掃屑回収装置３
により吸引されてダストトラップにより回収される。Next, the operation of the embodiment configured as described above will be described. The powdery polishing agent K is continuously or intermittently discharged and supplied from the polishing agent storage tank 2 connected to one end side of the existing pipe 1 by a predetermined amount, and the polishing agent K is connected to the other end side of the existing pipe 1. It is sucked by the vacuum suction device and the powdery abrasive / cleaning debris collecting device 3 that have been sucked, and moves as an air flow in the pipe. The cleaning pig 5 is pulled by the wire 4 in the pipe in which the abrasive K flow flows, and is moved in the arrow direction by the twisting backs 6 and 6 without rotating in the circumferential direction. When you reach the position, pig 5
By intensively passing through the narrow gap S between the outer peripheral surface of the body portion 7 and the inner surface of the pipe, the density of the abrasive K is increased and the flow velocity is increased, so that the deposit D adhering to the inner surface of the pipe is removed. Removal,
to clean. The abrasive K that has passed through the pig 5 and the adhered matter D that has been removed are the vacuum suction device and the powdery abrasive / cleaning dust collecting device 3
Is sucked by and collected by the dust trap.
【００１３】このような管内面クリーニング作業時に、
粉状研磨剤Ｋの材質，供給量及び供給方法（連続，間
欠）、クリーニング用ピグ５の材質，形状，寸法、ピグ
５の管内での支持方法及びピグ５の外周面と管内面との
間隙Ｓ、ピグ５の移動方法，速度、真空吸引装置兼粉状
研磨剤・清掃屑回収装置３の吸引力等を適宜変え、組み
合わせることにより、より効率的な清掃を行うことが可
能となる。真空吸引装置兼粉状研磨剤・清掃屑回収装置
３により吸引されてダストトラップに回収された粉状研
磨剤Ｋは、適当な処理を行って再利用が可能である。During such a cleaning operation of the inner surface of the pipe,
Material, supply amount and supply method (continuous, intermittent) of the powdery abrasive K, material, shape and size of the cleaning pig 5, support method of the pig 5 in the pipe, and gap between the outer peripheral surface of the pig 5 and the inner surface of the pipe. It is possible to perform more efficient cleaning by appropriately changing and combining S, the moving method and speed of the pig 5, the suction force of the vacuum suction device and the powdery abrasive / cleaning waste collection device 3, and the like. The powdery abrasive K, which is sucked by the vacuum suction device and powdery abrasive / cleaning debris collection device 3 and collected in the dust trap, can be reused by performing an appropriate treatment.
【００１４】クリーニング用ピグ５においては、後部先
鋭部から胴部の表面にかけて連続する螺旋部１０，１０
…を形成しているので、ピグ５の外周面と管内面との狭
い間隙Ｓを集中移動する研磨剤Ｋ流に渦流が発生し、研
磨剤Ｋ流が長い距離にわたって管内面と接することによ
り、効率のよい清掃作業を行う。 [0014] The spiral section 10 and 10 consecutive in the cleaning pig 5, after part pointed portion to the surface of the body portion
.. are formed, a vortex is generated in the abrasive K flow that intensively moves in the narrow gap S between the outer peripheral surface of the pig 5 and the inner surface of the pipe, and the abrasive K flow contacts the inner surface of the pipe over a long distance. It intends good line the cleaning work efficiency.
【００１５】また、クリーニング用ピグ５を管の径方向
ほぼ中央位置に支持するために、図４ないし図６のよう
に支持脚１６，１６…または双方向移動支持脚１７，１
７…を設けると、研磨剤Ｋ流がピグ５の外周面と管内面
との狭い間隙Ｓを管全周にわたってほぼ均等に通過し
て、ムラのない清掃作業が行われる。支持脚１６，１６
…を設けた場合には、図４に示すようにピグ５を矢印方
向にしか移動できないが、図６に示すように、双方向移
動支持脚１７，１７…を設けると、既設管１に対して前
後いずれの方向にも移動可能で、クリーニング用ピグ５
を前後の任意方向に移動させながら清掃作業を連続して
行うことができる。Further, in order to support the cleaning pig 5 in the radial direction substantially at the center position of the tube, the support legs 16, 16 or two-way mobile support legs as shown in FIGS. 4 to 6 17,1
7 is provided, the abrasive K flow passes through the narrow gap S between the outer peripheral surface of the pig 5 and the inner surface of the pipe almost uniformly over the entire circumference of the pipe, and uniform cleaning work is performed. Support legs 16, 16
... when a provided can not only move the pig 5 in the arrow direction as shown in FIG. 4, as shown in FIG. 6, the bi-direction movement support legs 17, 17 ... to provide, to the existing pipe 1 The cleaning pig 5
It is possible to continuously perform the cleaning work while moving the front and rear in any direction.
【００１６】以上、本発明の実施例について説明した
が、本発明はこれら実施例のみに限定されない。Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments.
【００１７】[0017]
【発明の効果】以上説明したように本発明の既設管の管
内面クリーニング工法によれば、以下の効果を奏するこ
とができる。
管１の一端側に収容タンク２から粉状研磨剤Ｋをほ
ぼ所定量ずつ供給し、この粉状研磨剤Ｋを、真空吸引装
置兼粉状研磨剤・清掃屑回収装置３により管１の他端側
から吸引して管内を気流により移動させ、粉状研磨剤Ｋ
が移動する管１内に、管内面と狭い間隙Ｓを有するピグ
５を管１の一方に移動させ、ピグ５と管内面との狭い間
隙Ｓを粉状研磨剤Ｋ流が集中移動することにより管内面
を清掃することになり、粉状研磨剤Ｋ流はピグ５の前後
では比較的低速、低密度で移動し、ピグ５と管内面との
狭い間隙Ｓを集中移動するときに研磨剤Ｋの密度が高ま
ると共に、高速で移動して、効率のよい管清掃作業を行
うことができる。As described above, according to the method for cleaning the inner surface of the existing pipe of the present invention, the following effects can be obtained. The powdery abrasive K is supplied to the one end of the pipe 1 from the storage tank 2 by a predetermined amount, and the powdery abrasive K is removed by the vacuum suction device and the powdery abrasive / cleaning dust collecting device 3 from the pipe 1 to the other side. The powdery polishing agent K is sucked from the end side and moved in the pipe by the air flow.
By moving the pig 5 having a narrow gap S between the inner surface of the pipe and one of the pipes 1 in the pipe 1 in which the powdery abrasive K flow concentrates in the narrow gap S between the pig 5 and the inner surface of the pipe. The inner surface of the pipe is cleaned, and the powdery abrasive K flow moves at a relatively low speed and low density before and after the pig 5, and when the concentrated abrasive moves in the narrow gap S between the pig 5 and the inner surface of the pipe. As the density of the pipes increases, the pipes can move at high speed to perform efficient pipe cleaning work.
【００１８】 ピグ５を、その外周面と管内面との間
隔を支持脚１６，１６または双方向移動支持脚１７，１
７…によりほぼ一定にして移動させることにより、研磨
剤Ｋ流は管１の内面とほぼ均等に接し、管１の全周をム
ラなく掃除することができる。 The pig 5 is provided with support legs 16 and 16 or bidirectional movable support legs 17 and 1 at a distance between the outer peripheral surface and the pipe inner surface.
By moving with a substantially constant by 7 ..., the abrasive K flow substantially uniformly in contact with the inner surface of the tube 1, Ru can clean the entire circumference of the tube 1 evenly.
【００１９】 ピグ５の外周面と管内面との狭い間隙
Ｓを集中移動する研磨剤Ｋ流に、螺旋部１０，１０…に
より渦流を発生させることにより、研磨剤Ｋ流が長い距
離にわたって管内面と接することになり、効率よい清掃
作業を行うことができる。 [0019] A narrow gap between the outer surface of the pig 5 and the inner surface of the pipe
The abrasive K flow that moves S intensively is applied to the spiral parts 10, 10 ...
By generating a more vortex flow, the polishing agent K flow has a longer distance.
Efficient cleaning by contacting the inner surface of the pipe over a distance
Can do the workIt
【図１】本発明による既設管の管内面クリーニング工法
の一実施例を示す概略側断面図である。FIG. 1 is a schematic side sectional view showing an embodiment of a method for cleaning an inner surface of an existing pipe according to the present invention.
【図２】同要部の側断面図である。FIG. 2 is a side sectional view of the main part.
【図３】ピグの側面図である。FIG. 3 is a side view of a pig.
【図４】管内面に対するピグの支持手段の実施例を示す
側面図である。FIG. 4 shows an embodiment of a pig supporting means for the inner surface of the pipe .
It is a side view .
【図５】同正面図である。FIG. 5 is a front view of the same .
【図６】管内面に対するピグの支持手段の他の実施例を
示す側面図である。FIG. 6 is another embodiment of the means for supporting the pig on the inner surface of the pipe .
It is a side view shown .
【図７】管内面に対するピグの支持手段の他の実施例を
示す側面図である。FIG. 7 is a side view showing another embodiment of the pig supporting means for the inner surface of the pipe.
【図８】（ａ）ないし（ｄ）は管内面に対するピグの支
持手段及び移動方向を示す側面図である。8A to 8D are side views showing a supporting means and a moving direction of a pig with respect to an inner surface of a pipe.
１ 既設管 ２ 研磨剤収容タンク ３ 真空吸引装置兼粉状研磨剤・清掃屑回収装置 ４ ワイヤ ４ａ，４ｂ ワイヤ挿通孔 ５ クリーニング用ピグ ６ 縒り戻し ７ 円筒状の胴部 ８，１１，１４ 後部先鋭部 ９，１１ 前部先鋭部 １０ 螺旋部 １２，１３，１５ 胴部 １６ 支持脚 １７ 双方向移動支持脚 Ｋ 粉状研磨剤 Ｓ 狭い間隙 Ｄ 付着物 1 Existing pipe 2 Abrasive storage tank 3 Vacuum suction device and powdery abrasive / cleaning waste collection device 4 wires 4a, 4b wire insertion holes 5 Cleaning Pig 6 twist back 7 Cylindrical body 8, 11, 14 Rear sharpened part 9,11 Sharpened front part 10 spiral part 12, 13, 15 body 16 Support legs 17 Two-way moving support leg K powdery abrasive S narrow gap D Adhesion
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−299683（ＪＰ，Ａ) 特開 昭60−232285（ＪＰ，Ａ) 特開 昭64−80484（ＪＰ，Ａ) 特開 昭61−280397（ＪＰ，Ａ) 特開 昭61−263685（ＪＰ，Ａ) 特開 昭55−159882（ＪＰ，Ａ) 特開 昭55−54072（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B08B 9/02 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-1-299683 (JP, A) JP-A-60-232285 (JP, A) JP-A-64-80484 (JP, A) JP-A-61- 280397 (JP, A) JP 61-263685 (JP, A) JP 55-159882 (JP, A) JP 55-54072 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) B08B 9/02
Claims (2)
定量ずつ供給し、この粉状研磨剤を管の他端側から吸引
して管内を気流により移動させ、粉状研磨剤が移動する
管内に、管内面と狭い間隙を有するピグを管の一方に移
動させ、ピグと管内面との狭い間隙を粉状研磨剤流が集
中移動することにより管内面を清掃するクリーニング工
法であって、ピグの後部と胴部の表面に連続して螺旋部
を形成し、ピグの外周面と管内面との狭い間隙を集中移
動する紛状研磨剤流に、渦流を発生させるようにしたこ
とを特徴とする既設管の管内面クリーニング工法。1. A substantially fed by a predetermined amount a powdery abrasive on one end of the existing piping, pipe and is moved by a gas stream by sucking the powdery abrasive from the other end of the tube, powdered abrasives A cleaning worker that moves a pig having a narrow gap with the inner surface of the pipe to one side of the pipe inside the pipe in which the powder moves, and the powder abrasive flow concentrates in the narrow gap between the pig and the inner surface of the pipe to clean the inner surface of the pipe.
The spiral part that is continuous on the back of the pig and on the surface of the body
To form a narrow gap between the outer surface of the pig and the inner surface of the pipe.
A method for cleaning the inner surface of an existing pipe, characterized in that a swirl is generated in the moving powdery abrasive flow .
定量ずつ供給し、この粉状研磨剤を管の他端側から吸引
して管内を気流により移動させ、粉状研磨剤が移動する
管内に、管内面と狭い間隙を有するピグを管の一方に移
動させ、ピグと管内面との狭い間隙を粉状研磨剤流が集
中移動することにより管内面を清掃するクリーニング工
法であって、ピグの胴部の前後位置に支持脚を設け、ピ
グを、その外周面と管内面との間隙をほぼ一定にして移
動させるようにしたことを特徴とする既設管の管内面ク
リーニング工法。2. A powdery polishing agent is provided almost at one end of the existing pipe.
Supply a fixed amount at a time and suck this powdery abrasive from the other end of the tube
Then, the air in the pipe is moved, and the powdery abrasive moves.
Move the pig with a narrow gap between the pipe inner surface and one side of the pipe.
The powdery abrasive flow in a narrow gap between the pig and the inner surface of the pipe.
A cleaning worker who cleans the inside of the pipe by moving it inside
A law, the support legs provided at the front and rear position of the pig in the barrel, pig and already設管characterized in that so as to move in a substantially constant gap between the outer peripheral surface and the inner surface Pipe inner surface cleaning method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14079993A JP3404073B2 (en) | 1993-06-11 | 1993-06-11 | Cleaning method for the inner surface of existing pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14079993A JP3404073B2 (en) | 1993-06-11 | 1993-06-11 | Cleaning method for the inner surface of existing pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07935A JPH07935A (en) | 1995-01-06 |
| JP3404073B2 true JP3404073B2 (en) | 2003-05-06 |
Family
ID=15277018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14079993A Expired - Fee Related JP3404073B2 (en) | 1993-06-11 | 1993-06-11 | Cleaning method for the inner surface of existing pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3404073B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4451539B2 (en) | 1999-05-11 | 2010-04-14 | シスメックス株式会社 | Automatic analyzer and container supply device for automatic analyzer |
| JP2002066423A (en) * | 2000-08-30 | 2002-03-05 | Yuushin Kk | Instrument and method for renewing piping |
| KR100866116B1 (en) * | 2007-02-07 | 2008-10-30 | 임경진 | Conduit piercing mandrill with cleaning function |
| DE102008016911A1 (en) * | 2008-03-26 | 2009-10-01 | Karl Storz Gmbh & Co. Kg | Medical cleaning device for cleaning internal surfaces of hollow shafts |
| JP4861453B2 (en) * | 2009-06-15 | 2012-01-25 | 株式会社東京トルネード | Drain pipe cleaning equipment |
| JP5277097B2 (en) * | 2009-07-21 | 2013-08-28 | 株式会社▲吉▼▲崎▼商会 | In-pipe cleaning method and pipe rehabilitation method |
| JP6068788B2 (en) * | 2011-10-04 | 2017-01-25 | 野崎 淳夫 | Pollutant cleaning device and pollutant cleaning control system using the same |
-
1993
- 1993-06-11 JP JP14079993A patent/JP3404073B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07935A (en) | 1995-01-06 |
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