JPH0351476B2 - - Google Patents
Info
- Publication number
- JPH0351476B2 JPH0351476B2 JP63191008A JP19100888A JPH0351476B2 JP H0351476 B2 JPH0351476 B2 JP H0351476B2 JP 63191008 A JP63191008 A JP 63191008A JP 19100888 A JP19100888 A JP 19100888A JP H0351476 B2 JPH0351476 B2 JP H0351476B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- stopper
- plug
- gas flowing
- cleaning
- 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
Landscapes
- Cleaning In General (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はサンドブラスト法による管内クリーニ
ング装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a pipe cleaning device using a sandblasting method.
従来技術とその問題点
近時、老朽化した既設埋設管（例えば配水管、
都市ガス管）の再生工事に於ける管内クリーニン
グ手段として、従来のスクレパー、ワイヤブラシ
などによる掻取り手段に代え、サンドブラスト法
が採用されつつある。ところが既設埋設管の再生
工事は、作業能率を考慮して一般に50〜100ｍも
の長距離を一スパンとして実施されることが多
く、このような長距離の管路の全長に亘り管内ク
リーニングに必要な高速（例えば50〜100ｍ／秒）
のサンドブラスト流を形成するためには、どうし
ても高馬力のコンプレツサー（例えば300〜400馬
力、送風量30〜40m3／分、風圧５〜７Kg／cm2）の
設置が必要となり、装置容量が膨大なものとな
る。一般にコンプレツサーその他付属設備は、作
業車に搭載されるが、このように装置容量が膨大
になると作業車もそれだけ大型化し、例えば８ト
ン車（又は４トン車２台）を必要とし、これでは
作業現場によつて乗り入れできず不便である。ま
たこのように大型のコンプレツサーを設置する
と、設備費が高価なものとなるのみならず電力の
消費量も大きくなり、工事費の高騰を招くことに
もなる。更にブラスト流に随伴されて管内に噴入
された研摩用粒体は管内面との衝突を繰返すうち
に徐々に摩減して研摩性能を低下して行くので、
片側施工ではどうしてもクリーニング効果が不均
一となり、両側施工が必要となる不利があつた。Conventional technology and its problems Recently, aging existing underground pipes (e.g. water pipes,
Sandblasting is increasingly being adopted as a method for cleaning the inside of city gas pipes in reclamation work, in place of conventional scraping methods such as scrapers and wire brushes. However, in consideration of work efficiency, reclamation work for existing underground pipes is generally carried out over long distances of 50 to 100 meters as one span, and the cleaning required for pipe interior cleaning is carried out over the entire length of such long-distance pipes. High speed (e.g. 50-100m/sec)
In order to create a sandblasting flow of Become something. Compressors and other auxiliary equipment are generally mounted on work vehicles, but as the capacity of the equipment increases, the work vehicles also become larger.For example, an 8-ton vehicle (or two 4-ton vehicles) is required; It is inconvenient because it is not possible to enter the site depending on the site. Furthermore, installing such a large compressor not only increases equipment costs but also increases power consumption, leading to a rise in construction costs. Furthermore, as the abrasive particles injected into the tube along with the blast flow repeatedly collide with the inner surface of the tube, they are gradually worn away and the polishing performance deteriorates.
When applied to one side, the cleaning effect inevitably becomes uneven, and there is a disadvantage in that it requires installation on both sides.
本発明の目的は、クリーニング性能を何等低下
することなしに、之等従来の問題を一掃し得るよ
うな管内クリーニング装置を提供しようとするに
ある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a pipe cleaning device that can eliminate these conventional problems without any deterioration in cleaning performance.
問題点を解決するための手段
本発明は、サンドブラスト法により管内クリー
ニングされる管内に気体を強制流通するための通
風装置、上記管内に設置されて該管の内周面との
間で管内流通気体加速のための周〓を形成しつつ
管内流通気体を駆動源として管内移動される栓
体、及び上記栓体に管外より制動を与えるための
制動付与手段を具備し、上記栓体の管内移動方向
の前端側には、管外装置の研摩用粒体圧送装置よ
り圧送される研摩用粒体を加速された管内流通気
体内に噴入するための噴口が備えられていること
を特徴とする管内クリーニング装置に係る。Means for Solving the Problems The present invention provides a ventilation device for forcibly circulating gas in a pipe to be cleaned by sandblasting, and a ventilation device installed in the pipe to allow gas to flow through the pipe between the pipe and the inner circumferential surface of the pipe. A stopper is provided that is moved within the pipe using gas flowing in the pipe as a driving source while forming a circumference for acceleration, and a damping means for applying a brake to the stopper from outside the pipe, and the stopper is moved within the pipe. The front end side of the tube is equipped with a nozzle for injecting the abrasive grains pumped from the abrasive grains pumping device of the extratubular device into the accelerated gas flowing inside the tube. Related to pipe cleaning equipment.
実施例
以下に本発明の１実施例を添付図面にもとづき
説明すると次の通りである。Embodiment An embodiment of the present invention will be described below based on the accompanying drawings.
本発明装置に於ては、管ａ内に空気を強制流通
するために地上に送風機１が設置され、送風機１
は、送気ホール１１及び送気金具１２を通じて、
管ａの始端に連結される。送風機１を搭載する作
業車は図面では省略されている。送風機１として
は、例えば200mmφの管内のクリーニングいを実
施する場合に於て、空気を風量30〜40m3／分、風
圧１〜２Kg／cm2（ケージ圧）（管内流速８〜15
ｍ／秒程度）の条件で送気できる性能のもの、例
えば25〜50馬力（ルーツ型）のものが用いられ
る。 In the device of the present invention, a blower 1 is installed on the ground to forcefully circulate air inside the pipe a.
through the air supply hole 11 and the air supply fitting 12,
It is connected to the starting end of tube a. The work vehicle on which the blower 1 is mounted is omitted in the drawing. For example, when cleaning the inside of a 200 mmφ pipe, the blower 1 blows air at a flow rate of 30 to 40 m 3 /min and a wind pressure of 1 to 2 Kg/cm 2 (cage pressure) (flow rate in the pipe of 8 to 15 m 3 /min).
A type with a performance that can supply air at a speed of about 25 m/sec), for example, a 25 to 50 horsepower (roots type) is used.
管内流通気体の流速を加速するために、管ａ内
に船体２がその外周面と管内周面との間で周〓２
１を形成するように設置される。栓体２の形状と
しては管ａ内周面との間で周〓２１を形成したも
のであれば特に限定はなく、例えば図示するよう
なコーン型のものを有利に使用でき、図示のよう
にその外周面に翼部２２を螺旋状に形成しておけ
ば、これが栓体２と管ａとの間で間隔保持部材と
して機能し、栓体２の安定確実な管内設定状態を
確保し得るのみならず管内流通気体を感情周〓２
１より前方に向けて渦粒として噴出でき、その噴
出時の勢力をより長い距離に亘つて持続せしめ得
る利点が得られる。このような栓体２の設置個数
は、少なくとも一個あればよく、図には２個を連
係して設置した場合が示されている。この場合、
前側の栓体２′は渦粒発生機として機能する。全
体２（又は２′）の材質は任意であり、通常耐摩
耗性のよいゴム製のものが用いられる。周〓２１
の開口巾〔管ａの内径と船体２の直径との差の1/
２〕は、広い範囲から選択できるが、これがあま
りに大きいと流体加速の目的が充分に達せられな
くなり、また逆にあまりに小さいと加速流体の風
量が不足してこれに随伴させる下記の研摩用流体
の量が不当に制限される虞れがあるので、通常は
５〜30mm好ましくは10〜20mmの範囲内から管径、
研摩用粒体などによつて適宜決定される。 In order to accelerate the flow velocity of the gas flowing in the pipe, the hull 2 is placed inside the pipe a with a circumference of 2
1. The shape of the plug 2 is not particularly limited as long as it forms a periphery 21 between it and the inner peripheral surface of the tube a.For example, a cone-shaped plug as shown in the figure can be advantageously used; If the wing portion 22 is formed in a spiral shape on the outer circumferential surface, this will function as a spacing member between the plug body 2 and the pipe a, and it will only be possible to ensure a stable and reliable setting state of the plug body 2 in the pipe. Instead, the gas flowing in the pipe is used as an emotion 2
1, it can be ejected as vortex particles forward, and the advantage is that the force at the time of ejection can be sustained over a longer distance. The number of such plugs 2 to be installed is at least one, and the figure shows a case where two plugs are installed in conjunction with each other. in this case,
The front plug 2' functions as a vortex generator. The material of the whole 2 (or 2') is arbitrary, and usually rubber is used because it has good wear resistance. Zhou〓21
opening width [1/ of the difference between the inner diameter of pipe a and the diameter of hull 2]
2] can be selected from a wide range, but if it is too large, the purpose of fluid acceleration will not be fully achieved, and if it is too small, the air volume of the accelerating fluid will be insufficient, making it difficult to use the following polishing fluid to accompany it. Since the amount may be unduly restricted, the pipe diameter is usually within the range of 5 to 30 mm, preferably 10 to 20 mm.
It is appropriately determined depending on the polishing grains, etc.
加速された管内流通気体内に研摩用流体を噴入
し、サンドプラスト流を形成するために、栓体２
に噴口３が備えられる。噴口３は、後側の栓体３
の前端側に位置しており、翼部２２を設ける場合
は、該翼部２２と平方する方向に前方に向け開口
していることが好ましい。 In order to inject polishing fluid into the accelerated gas flowing in the pipe and form a sandplast flow, a plug body 2 is used.
is equipped with a spout 3. The spout 3 is a plug body 3 on the rear side.
If a wing section 22 is provided, it is preferable that the opening is opened forward in a direction square to the wing section 22.
噴口３より研摩用粒体を加速された管内流通体
内に噴入するために、該噴口３は、栓体２内に形
成された通孔３１、栓体２の制動手段を兼ねて地
上設置のウインチのドラム３３に巻取られた急速
ホース３２、該ホース３２の後端と接続されたド
ラム３３の中空回転軸３４及び該回転軸３４とス
イベル（図示せず）介して接続された給送導管３
５を順次経て、研摩用粒体の圧送装置４に連結さ
れている。圧送装置４はコンプレツサー４１と研
摩用粒体のポツト４２を具備し、コンプレツサー
４１より送気される圧縮空気の一部を分岐管３６
を通じてポツト４２を通過させることにより、研
摩用粒体の所定量を圧縮空気に随伴させて圧送し
得るようになつている。コンプレツサー４１は単
に研摩用粒体の圧送に使用されるにすぎないもの
であり、例えは10摩陸程度の小型のもので充分で
ある。 In order to inject the abrasive particles from the nozzle 3 into the accelerated flow inside the pipe, the nozzle 3 is connected to a through hole 31 formed in the plug body 2 and a ground-mounted hole that also serves as a braking means for the plug body 2. A rapid hose 32 wound around a drum 33 of a winch, a hollow rotating shaft 34 of the drum 33 connected to the rear end of the hose 32, and a feeding conduit connected to the rotating shaft 34 via a swivel (not shown). 3
5, and is connected to a pumping device 4 for abrasive particles. The pressure feeding device 4 is equipped with a compressor 41 and a pot 42 for abrasive particles, and a part of the compressed air sent from the compressor 41 is sent to a branch pipe 36.
By passing the pot 42 through the pot 42, a predetermined amount of abrasive grains can be pumped entrained with compressed air. The compressor 41 is simply used for pumping the abrasive particles, and a small compressor of about 10 mm is sufficient, for example.
管ａの終端側には、情報通り連結ダクト５１を
経て集塵機５が備えられる。 A dust collector 5 is provided at the terminal end of the pipe a via a connecting duct 51 as described above.
管内クリーニングを実施するに際しては、送風
機１から管ａ内に空気が送風され、その送気量及
び送気圧は、例えば200mmφの管内をクリーニグ
する場合に於て、30〜40m3／分、１〜２Kg／cm2
（管内風速約10ｍ／秒）程度が適当であり、この
ような送気条件は、例えば25〜50馬力程度の比較
的小型の送風機１（ルーツ型）を用いて容易に作
出できる。 When cleaning the inside of a pipe, air is blown into the pipe a from the blower 1, and the air flow rate and pressure are, for example, 30 to 40 m 3 /min, 1 to 40 m 3 /min when cleaning the inside of a 200 mmφ pipe. 2Kg/ cm2
(in-pipe wind speed of about 10 m/sec) is appropriate, and such air supply conditions can be easily created using a relatively small blower 1 (roots type) with, for example, about 25 to 50 horsepower.
管ａ内に送風された空気は、栓体２と管ａ内周
面との間に形成された周〓２１よりその前方へ噴
出され、加速される。この加速の度合は周〓２１
の大きさにもよるが通常５〜10倍程度に達し、上
記のような比較的低圧の送気であつても、サンド
ブラストに必要な高速の管内流通気体が形成でき
る。 The air blown into the tube a is ejected forward from the periphery 21 formed between the plug body 2 and the inner peripheral surface of the tube a, and is accelerated. The degree of this acceleration is 〓21
Although it depends on the size of the pipe, it usually reaches about 5 to 10 times, and even with the above-mentioned relatively low-pressure air supply, the high-speed gas flowing in the pipe necessary for sandblasting can be formed.
而して、この加速された管内流通気体中に噴口
３より研摩用粒体を噴入しつつ、栓体２を管内流
通気体を駆動源とし且つ上記供給ホース３２を利
用して制動を与えつつ徐々に前方へ移動して行く
ことにより、サンドブラスト流を管内全長に亘つ
て高速に保持しつつ且つ研摩用粒体の噴入個所を
管軸方向に徐々に移動しつつ管内をクリーニグで
きる。尚管ａの始端部は、予備操作として適宜の
手段を適用してクリーニングされる。 While injecting polishing particles from the nozzle 3 into the accelerated gas flowing in the pipe, the stopper 2 is driven by the gas flowing in the pipe and the supply hose 32 is used to apply braking. By gradually moving forward, the inside of the pipe can be cleaned while maintaining the sandblasting flow at high speed over the entire length of the pipe and gradually moving the injection point of the abrasive grains in the axial direction of the pipe. The starting end of the pipe a is cleaned by applying appropriate means as a preliminary operation.
発明の効果
このように本発明に於ては、管内への送気が低
圧（例えば１〜２Kg／cm2）であるに拘らず、従来
の高圧送気（５〜７Kg／cm2）と変らない管内流速
を確保でき、従つて送風装置としては、例えば25
〜50馬力程度の送風機というような比較的装置容
量の小さいものでよい。また研摩用粒体の圧送に
適用される手段も先に述べたように例えば10馬力
程度の小型のコンプレツサーでよい。このような
装置であれば、通常１〜1.5トンの作業車１台に
容易に搭載でき、作業現場への乗り言入れが、従
来法よりも遥かに容易となる。更に装置容量が小
さくなるとそれだけ設定よ安価となりまた電力の
消費量も少なくなり、全体として工費を節減し得
る利点がある。Effects of the Invention As described above, in the present invention, although the air supplied into the pipe is at a low pressure (for example, 1 to 2 Kg/cm 2 ), it is different from the conventional high pressure air supplied (5 to 7 Kg/cm 2 ). Therefore, as a blower device, for example, 25
A relatively small equipment capacity, such as a blower with ~50 horsepower, may be sufficient. Furthermore, as mentioned above, the means used to pump the abrasive particles may be, for example, a small compressor of about 10 horsepower. Such a device can be easily mounted on a single work vehicle, which normally weighs 1 to 1.5 tons, making it much easier to get onto a work site than with conventional methods. Furthermore, the smaller the device capacity, the cheaper it will be to set up and the less power it will consume, which has the advantage of reducing construction costs as a whole.
更に栓体２の管内移動につれて、研摩用粒体の
噴入個所が管内を移動して行くので、片側施工に
よつて管全長に亘り均一にクリーニングでき、時
に50〜100ｍもの長尺の管内クリーニングに適用
して有用である。 Furthermore, as the stopper 2 moves inside the pipe, the injection point of the abrasive grains moves inside the pipe, so by applying it on one side, it is possible to clean uniformly over the entire length of the pipe, sometimes cleaning inside long pipes as long as 50 to 100 meters. It is useful when applied to
更に研摩用粒体は、栓体の前端側の位置で噴口
を通じ栓体より下流側の高速流通気体内に直接噴
入されるので全量が管壁より研摩除去されたスケ
ールと共に管内前方に向け搬送される。従つて栓
体の上流側の管内には、研摩用粒体並びに除去ス
ケールが残存することがなく、２次的な仕上げ除
去を全く必要としない。 Furthermore, since the abrasive particles are injected directly into the high-speed flowing gas downstream from the plug through the nozzle at the front end of the plug, the entire amount is transported forward into the pipe along with the scale that has been polished away from the pipe wall. be done. Therefore, no abrasive particles or removed scale remain in the pipe on the upstream side of the plug, and no secondary finishing removal is required.
更にサンドブラスト流は船体の下流側で作出さ
れるので、栓体がサンドブラスト流により損傷さ
れるという危険性がなく、栓体の繰返しの使用が
可能になる。 Furthermore, since the sandblasting flow is created downstream of the hull, there is no risk of the plug being damaged by the sandblasting flow, allowing repeated use of the plug.
図面は本発明の一実施例を示す縦断面図であ
る。
図に於て、１は送風機、２は栓体、３は噴口、
４は研摩用粒体の圧送装置である。
The drawing is a longitudinal sectional view showing an embodiment of the present invention. In the figure, 1 is the blower, 2 is the plug, 3 is the nozzle,
4 is a pumping device for abrasive particles.
Claims (1)
れる管内に気体を強制流通するための通風装置、
上記管内に設置されて該管の内周面との間で管内
流通気体加速のための周〓を形成しつつ管内流通
気体を駆動源として管内移動される栓体及び上記
栓体に管外より制動を与えるための制動付与手段
を具備し、上記栓体の管内移動方向の前端側に
は、管外設置の研摩用粒体圧送装置より圧送され
る研摩用粒体を加速された管内流通気体内に噴入
するための噴口が備えられていることを特徴とす
る管内クリーニング装置。1. A ventilation device for forcing gas into the pipe that is to be cleaned by sandblasting,
A stopper that is installed in the pipe and moves within the pipe using the gas flowing within the pipe as a driving source while forming a circumference between it and the inner peripheral surface of the pipe for accelerating the gas flowing within the pipe, and a plug that is attached to the stopper from outside the pipe. The stopper is equipped with a brake application means for applying a brake, and the front end side of the stopper in the direction of movement within the pipe is provided with abrasive particles pumped by an abrasive particle pumping device installed outside the tube, and an accelerated circulating air inside the pipe. A pipe cleaning device characterized by being equipped with a nozzle for injecting water into the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191008A JPS6480484A (en) | 1988-07-29 | 1988-07-29 | Apparatus for cleaning the interior of duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191008A JPS6480484A (en) | 1988-07-29 | 1988-07-29 | Apparatus for cleaning the interior of duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6480484A JPS6480484A (en) | 1989-03-27 |
| JPH0351476B2 true JPH0351476B2 (en) | 1991-08-06 |
Family
ID=16267339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63191008A Granted JPS6480484A (en) | 1988-07-29 | 1988-07-29 | Apparatus for cleaning the interior of duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6480484A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008016911A1 (en) * | 2008-03-26 | 2009-10-01 | Karl Storz Gmbh & Co. Kg | Medical cleaning device for cleaning internal surfaces of hollow shafts |
| KR101674459B1 (en) * | 2016-04-27 | 2016-11-09 | 박재은 | The apparatus of drainage conduit cleaning for using temperature difference and turbulence spray |
| CN111482420A (en) * | 2020-05-27 | 2020-08-04 | 殷朝杉 | Descaling device for petroleum machinery pipeline and application method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4933848A (en) * | 1972-07-29 | 1974-03-28 | ||
| JPS5535985A (en) * | 1978-09-08 | 1980-03-13 | Hitachi Plant Eng & Constr Co | Piping washing method |
| JPS55142574A (en) * | 1979-04-23 | 1980-11-07 | Chiyuunichi Kuriinaa Kogyo Kk | Method of descaling wall surface of inside of pipe |
| JPS57187596A (en) * | 1981-05-13 | 1982-11-18 | Hitachi Ltd | Method of removing soil in pipe line |
-
1988
- 1988-07-29 JP JP63191008A patent/JPS6480484A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6480484A (en) | 1989-03-27 |
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