JPH0871520A - Intratube cleaning device - Google Patents
Intratube cleaning deviceInfo
- Publication number
- JPH0871520A JPH0871520A JP6238471A JP23847194A JPH0871520A JP H0871520 A JPH0871520 A JP H0871520A JP 6238471 A JP6238471 A JP 6238471A JP 23847194 A JP23847194 A JP 23847194A JP H0871520 A JPH0871520 A JP H0871520A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- head
- pipe
- heat transfer
- tube
- 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.)
- Pending
Links
Landscapes
- Cleaning In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は管内洗浄装置に係り、特
に熱交換器の伝熱管やプラント配管等の内面洗浄を行わ
せるのに好適な管内洗浄装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cleaning device, and more particularly to a pipe cleaning device suitable for cleaning the inner surfaces of heat transfer pipes of heat exchangers and plant pipes.
【０００２】[0002]
【従来の技術】熱交換器の伝熱管や化学プラント等にお
ける配管は、内部を流通する媒体によって汚れるため定
期的な清掃を必要としている。このような清掃を必要と
する配管には、特に運転を開始した供用中の原子力プラ
ント１次系における管式熱交換器の伝熱管があり、この
伝熱管の内面には汚染された放射性物質が組成されて付
着する。このような付着物が管内壁面に付着すると、伝
熱管の伝熱効率を著しく損なう他、熱交換器周囲の雰囲
気放射線当量率が増加し、プラント運転中のパトロール
員や定期点検作業時の従事者に無駄な放射線を被曝させ
ることになる。したがって、特に熱交換器の供用期間中
の検査や、熱交換器の補修または交換、解体、切断等の
作業を実施する前には、放射線発生源となるこれらの付
着物を伝熱管から完全に除去することが必要である。2. Description of the Related Art Heat transfer pipes of heat exchangers and pipes in chemical plants and the like need to be cleaned regularly because they are contaminated by a medium flowing inside. The pipes that require such cleaning include the heat transfer pipes of the tube heat exchanger in the primary system of the nuclear power plant that has started operation, and the inside of the heat transfer pipes contains contaminated radioactive materials. Be composed and adhere. If such deposits adhere to the inner wall surface of the pipe, the heat transfer efficiency of the heat transfer pipe will be significantly impaired, and the radiation equivalent rate of the atmosphere around the heat exchanger will increase, which may cause patrol personnel during plant operation and workers performing regular inspection work. This is a waste of radiation. Therefore, especially before inspecting the heat exchanger during its service period and before performing work such as repair or replacement of the heat exchanger, dismantling, and cutting, completely remove these deposits, which are radiation sources, from the heat transfer tubes. It needs to be removed.
【０００３】従来、この種の伝熱管等への管内洗浄作業
の必要性から、種々の洗浄法が実施されている。例え
ば、上述した熱交換器の通常運転中の系統内流速を若干
高めて行う系統フラッシング洗浄が知られている。しか
し、系統内流速を高めても管内壁面への付着物への衝撃
力は極めて小さく、したがって除去効率が低いという欠
点があることから、薬剤注液フラッシングによる溶解処
理方法も考えられている。この薬剤注液フラッシングの
場合には、使用後の薬剤の廃液処理に多大の労力と費用
を費やす問題があり、更に付着物が完全に除去され難い
問題を抱えていた。Conventionally, various cleaning methods have been carried out because of the necessity of cleaning the inside of the heat transfer tubes of this type. For example, system flushing cleaning is known in which the flow velocity in the system during normal operation of the heat exchanger described above is slightly increased. However, even if the flow velocity in the system is increased, the impact force to the deposits on the inner wall surface of the pipe is extremely small, and therefore the removal efficiency is low. Therefore, a dissolution treatment method by chemical injection flushing is also considered. In the case of this chemical injection flushing, there is a problem that a great amount of labor and cost are spent for waste liquid treatment of the chemical after use, and further, there is a problem that it is difficult to completely remove deposits.
【０００４】このような観点から、管内壁面への付着物
を機械的に除去する方法としてブラシ洗浄方式や高圧水
による衝撃エネルギを利用した方法が試みられている。
前者は細長い棒の先端にブラシ等の磨き具を取付け、こ
れを伝熱管内部に挿入し、機械的に擦り落として取り除
く方法であり、後者は伝熱管内部にノズルを挿入し、ノ
ズルから高圧水を管内壁面に衝突させて付着異物を破壊
しながら洗浄する方法である。From such a point of view, as a method for mechanically removing the deposits on the inner wall surface of the pipe, a brush cleaning method and a method utilizing impact energy of high pressure water have been tried.
The former is a method in which a polishing tool such as a brush is attached to the tip of an elongated rod, and it is inserted into the heat transfer tube and mechanically scraped off to remove it.The latter is a nozzle inserted inside the heat transfer tube and the high pressure water Is a method of colliding with the inner wall surface of the pipe to destroy adhered foreign substances and cleaning.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記ブ
ラシ洗浄方式は前述したフラッシング法より管内付着物
を良く除去できる点では優れているものの、ブラッシン
グによって除去された付着物のほとんどは塵埃になり、
特にブラシ等の磨き具を次の伝熱管へ挿入替えする際、
塵埃を大気中に飛散させ、作業場所の空気中放射能濃度
を上昇させてしまう問題を抱えている。また、後者の高
圧水洗浄方式では、ブラシ洗浄方式に比較して付着物の
除去能力が低く、したがって高圧水洗浄を行った後でブ
ラシ洗浄を行うという併用方式とせざるを得ず、２度手
間を要して洗浄作業効率が悪い欠点がある。洗浄作業時
間が長ければ特に原子力発電用熱交換器を洗浄対象とす
ると被曝線当量も多くなり安全性で問題となる。However, although the brush cleaning method is superior to the above-described flushing method in that it can remove the deposits in the pipe better, most of the deposits removed by the brushing become dust,
Especially when replacing polishing tools such as brushes with the next heat transfer tube,
There is a problem that dust is scattered into the atmosphere and the radioactivity concentration in the air at the work place is increased. In addition, the latter high-pressure water cleaning method has a lower ability to remove adhered substances than the brush cleaning method, and therefore the combination method of performing high-pressure water cleaning and then brush cleaning is inevitable. Therefore, there is a drawback that cleaning work efficiency is poor. If the cleaning work time is long, especially if the heat exchanger for nuclear power generation is to be cleaned, the radiation equivalent becomes large and there is a problem in safety.
【０００６】本発明は、上記従来の問題点に着目してな
されたもので、伝熱管等の配管内壁面への付着物の洗浄
除去作業に好適であり、洗浄作業を効率的に行うことが
できるとともに、洗浄作業に際して除去付着物が飛散す
ることを防止でき、特に放射性付着物を洗浄除去する場
合には作業時間の短縮による被曝低減と塵埃発生の抑制
による汚染拡大防止、および体内摂取防止を図ることが
できる管内洗浄装置を提供することを目的とするもので
ある。The present invention has been made by paying attention to the above-mentioned conventional problems, and is suitable for the work of cleaning and removing the deposits on the inner wall surface of the pipe such as the heat transfer pipe, and the cleaning work can be carried out efficiently. At the same time, it is possible to prevent scattered deposits from scattering during cleaning work.Especially when cleaning and removing radioactive deposits, it is possible to reduce exposure by reducing work time and prevent contamination from spreading by suppressing dust generation and ingestion in the body. It is an object of the present invention to provide a pipe cleaning device that can be designed.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る管内洗浄装置は、洗浄対象の管内部に
挿入可能に形成されるとともに洗浄流体が内部に供給さ
れるヘッドを有し、このヘッドには前記洗浄流体の流れ
により回転するフィン付き回転体を取り付け、この回転
体の外面に前記管内を洗浄するブラシ等の洗浄体を設
け、前記フィン通過後の洗浄流体を前記洗浄体より前方
で管内面に向けて噴射するノズル部をヘッドの先端部に
形成した構成とした。In order to achieve the above object, an in-pipe cleaning apparatus according to the present invention has a head that is insertable into a pipe to be cleaned and has a cleaning fluid supplied therein. Then, a rotating body with a fin that rotates by the flow of the cleaning fluid is attached to this head, and a cleaning body such as a brush for cleaning the inside of the pipe is provided on the outer surface of this rotating body, and the cleaning fluid after passing through the fin is cleaned. A nozzle portion for ejecting toward the inner surface of the tube in front of the body is formed at the tip of the head.
【０００８】[0008]
【作用】上記構成によれば、管内にヘッドを挿入した状
態で高圧水をヘッド内部に供給すると、ヘッド内流路に
おかれたフィンが流水エネルギにより回転される。これ
によりフィンと一体になった回転体が回転駆動されるこ
とになり、回転体の外周に設けたブラシ等の洗浄体が管
内壁面を擦って洗浄作業をなす。同時にヘッドにはフィ
ンを通過した洗浄流体の噴射ノズルが設けられているた
め、ブラシ等の洗浄体による洗浄領域の前方内壁面に洗
浄流体が高圧噴射される。これにより高圧水の衝撃力に
よる付着物の破壊除去が行われるのである。噴射洗浄と
ブラッシング湿式洗浄が同時に行われ、かつブラッシン
グ回転駆動のための動力を高圧洗浄流体エネルギを利用
して行うので、作業効率とともにエネルギ効率が高い洗
浄装置とすることができる。According to the above construction, when high-pressure water is supplied to the inside of the head with the head inserted in the pipe, the fins in the flow path inside the head are rotated by the flowing water energy. As a result, the rotary body integrated with the fins is driven to rotate, and a cleaning body such as a brush provided on the outer periphery of the rotary body rubs the inner wall surface of the pipe to perform cleaning work. At the same time, since the head is provided with a nozzle for spraying the cleaning fluid that has passed through the fins, the cleaning fluid is sprayed at a high pressure onto the front inner wall surface of the cleaning region by the cleaning body such as a brush. As a result, the debris is destroyed and removed by the impact force of the high-pressure water. Since the jet cleaning and the wet cleaning by brushing are performed at the same time and the power for rotationally driving the brushing is performed by using the high pressure cleaning fluid energy, it is possible to obtain a cleaning apparatus having high working efficiency and energy efficiency.
【０００９】[0009]
【実施例】以下に、本発明に係る管内洗浄装置の具体的
実施例を図面を参照して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of the pipe cleaning apparatus according to the present invention will be described below in detail with reference to the drawings.
【００１０】図１は本発明に係る管内洗浄装置の要部断
面図であり、図２は使用状態の全体構成を示す概念図で
ある。まず、図２に示すように、この実施例に係る洗浄
装置は、熱交換器１０の伝熱管１２を洗浄することを目
的としており、伝熱管１２の内部に挿入可能なフレキシ
ブル管１４を有し、その先端にあって伝熱管１２への挿
入先端となる洗浄ヘッド１６を備えている。フレキシブ
ル管１４の後端部には耐圧ホース１８等を介して水圧発
生装置２０に接続され、この水圧発生装置２０は洗浄液
などを収容したタンク等の洗浄流体供給源（図示せず）
から洗浄液を前記洗浄ヘッド１６に向けて圧送するもの
としている。したがって、洗浄液は高圧で洗浄ヘッド１
６に供給されるようになっている。一方、洗浄ヘッド１
６が挿入される伝熱管１２の出口側には止水栓２２を介
して排水管２４が接続され、排水管２４はドレンファン
ネル２６から廃液処理システムに送水され、あるいはフ
ィルタ２８を介装した循環管路３０に接続されて水圧発
生装置２０に導かれ、再利用できるようになっている。
排水管２４から分岐されるファンネル側排水管２４Ａと
循環管路３０とにはそれぞれ開閉弁３２、３４が設けら
れ、流路を切り換え可能としている。FIG. 1 is a sectional view of an essential part of an in-pipe cleaning device according to the present invention, and FIG. 2 is a conceptual diagram showing the overall construction in use. First, as shown in FIG. 2, the cleaning apparatus according to this embodiment is intended to clean the heat transfer tube 12 of the heat exchanger 10, and has a flexible tube 14 that can be inserted into the heat transfer tube 12. The cleaning head 16 is provided at the tip of the cleaning head 16 and serves as a tip for insertion into the heat transfer tube 12. A water pressure generator 20 is connected to the rear end of the flexible pipe 14 through a pressure-resistant hose 18 and the like, and the water pressure generator 20 is a cleaning fluid supply source (not shown) such as a tank containing a cleaning liquid.
The cleaning liquid is pressure-fed toward the cleaning head 16. Therefore, the cleaning liquid is at high pressure and the cleaning head 1
6 is supplied. On the other hand, the cleaning head 1
The drainage pipe 24 is connected to the outlet side of the heat transfer pipe 12 into which the drainage pipe 6 is inserted via the water stop plug 22, and the drainage pipe 24 is fed from the drain funnel 26 to the waste liquid treatment system or is circulated through the filter 28. It is connected to the pipeline 30 and guided to the water pressure generator 20 so that it can be reused.
The funnel side drain pipe 24A branched from the drain pipe 24 and the circulation pipeline 30 are provided with opening / closing valves 32 and 34, respectively, so that the flow paths can be switched.
【００１１】ここで、前記伝熱管１２に挿入され管内壁
面の洗浄作業の主体となる洗浄ヘッド１６の具体的構成
を図１を参照して説明する。図１は伝熱管１２の内部に
挿入された洗浄ヘッド１６の縦横断面図であり、図示の
ように、このヘッド１６は全体外観をほぼ長円形状とさ
れたもので、フレキシブル管１４との接続側には洗浄液
が導入されるチャンバ３６を有するとともに、このチャ
ンバ３６の前端壁３８の中心部から支持軸４０を突出さ
せており、当該支持軸４０の先端にきのこ型キャップ４
２を取付けた構造とされている。そして、チャンバ前端
壁３８とキャップ４２との間に位置して前記支持軸４０
の回りを回転できるようにフィン付き回転体４４を装着
している。Here, the concrete construction of the cleaning head 16 which is inserted into the heat transfer tube 12 and is a main body for cleaning the inner wall surface of the tube will be described with reference to FIG. FIG. 1 is a vertical and horizontal cross-sectional view of a cleaning head 16 inserted into the heat transfer tube 12. As shown in the figure, the head 16 has a substantially oval shape as a whole and is connected to a flexible tube 14. The chamber 36 has a chamber 36 into which the cleaning liquid is introduced, and the support shaft 40 is projected from the center of the front end wall 38 of the chamber 36. The mushroom-shaped cap 4 is attached to the tip of the support shaft 40.
2 is attached. The support shaft 40 is located between the chamber front end wall 38 and the cap 42.
A rotating body with fins 44 is attached so as to be able to rotate around.
【００１２】前記洗浄液導入チャンバ３６はフラスコ型
容器状に形成されており、開口部をフレキシブル管１４
への接続口４６とし、この接続口４６から内径を拡大し
た室を形成し、前端壁３８部分で最大直径となるように
形成されている。前端壁３８は前記接続口４６に対面し
てヘッド１６の中心線を横断するように配置されてい
る。前端壁３８の外面側には上記中心線に沿って前述し
た支持軸４０が一体的に突設されている。この支持軸４
０には、これを回転軸としてその周囲を自由回転できる
回転体４４が装着されている。回転体４４は上記チャン
バ３６における前端壁３８とほぼ同等の外径寸法を有す
る円環リング４８と、この円環リング４８の内周面に支
持軸４０に向けて突出する複数枚のフィン５０とによっ
て構成され、フィン５０の先端部で支持軸４０に回転摺
動するようになっている。フィン５０は支持軸４０のラ
ジアル平面に対して斜交しており、支持軸４０に沿った
流体により回転されるようになっている。この回転のた
めの流体は前記チャンバ３６から導入され、このため前
記チャンバ前端壁３８には円環リング４８の内部側であ
ってフィン５０の後端面に向けて開口する複数の通流穴
５２から供給されるようになっている。これにより、フ
レキシブル管１４からチャンバ３６に導入された高圧洗
浄液は通流穴５２を通じて円環リング４８の内部に噴射
され、フィン５０に回転エネルギを与えて支持軸４０に
沿って流れ、回転体４４を回転駆動するのである。The cleaning liquid introducing chamber 36 is formed in the shape of a flask-type container, and has an opening at the flexible tube 14.
Is formed as a connection port 46 to the front end wall 38, and a chamber having an enlarged inner diameter is formed from the connection port 46. The front end wall 38 is arranged so as to face the connection port 46 and cross the center line of the head 16. On the outer surface side of the front end wall 38, the above-mentioned support shaft 40 is integrally projectingly provided along the center line. This support shaft 4
A rotary body 44, which can freely rotate around its axis as a rotation axis, is attached to 0. The rotating body 44 includes an annular ring 48 having an outer diameter dimension substantially equal to that of the front end wall 38 of the chamber 36, and a plurality of fins 50 projecting toward the support shaft 40 on the inner peripheral surface of the annular ring 48. The fins 50 are adapted to rotate and slide on the support shaft 40. The fins 50 are oblique to the radial plane of the support shaft 40 and are rotated by the fluid along the support shaft 40. The fluid for this rotation is introduced from the chamber 36, so that the chamber front end wall 38 is provided with a plurality of flow holes 52 that are open to the rear end surface of the fin 50 on the inner side of the annular ring 48. It is being supplied. As a result, the high-pressure cleaning liquid introduced from the flexible pipe 14 into the chamber 36 is jetted into the inside of the annular ring 48 through the flow holes 52, imparts rotational energy to the fins 50 and flows along the support shaft 40, and the rotor 44 Is driven to rotate.
【００１３】上記回転体４４を保持するように前述した
キャップ４２が設けられ、これは支持軸４０の先端部を
固定取付面とするもので、キャップ取付け軸に設けたボ
ルト５４を支持軸４０に螺着することで固定させてい
る。このキャップ４２の内部には前記回転体４４のフィ
ン５０の端面部分に対面する環状凹部５６が形成され、
ここでフィン５０部分から流出する洗浄液を受けるよう
にしている。そして、キャップ周端部は回転体４４の円
環リング４８の前端面に対面されて円環リング４８と回
転接触できるようにされている。回転体４４の円環リン
グ４８はこのキャップ周端部と、前記チャンバ前端壁３
８とを回転摺動面としているが、摺動面部にはシール５
８Ｒ、５８Ｆが設けられ、液洩れを防止している。回転
体４４はフィン５０の形成方向によりスラスト力を発生
するため、一方のシール５８Ｒはスプリング６０を内蔵
した構造とし、回転体４４の軸方向移動を許容しつつ、
シール性を確保している。The above-mentioned cap 42 is provided so as to hold the rotating body 44, and the tip end portion of the support shaft 40 serves as a fixed mounting surface. The bolt 54 provided on the cap mounting shaft is mounted on the support shaft 40. It is fixed by screwing. An annular recess 56 facing the end face portion of the fin 50 of the rotating body 44 is formed inside the cap 42,
Here, the cleaning liquid flowing out from the fin 50 is received. The peripheral edge of the cap faces the front end surface of the annular ring 48 of the rotating body 44 so that the cap can be in rotational contact with the annular ring 48. The annular ring 48 of the rotating body 44 is provided on the peripheral edge of the cap and the chamber front end wall 3
8 is used as a rotary sliding surface, but the sliding surface has a seal 5
8R and 58F are provided to prevent liquid leakage. Since the rotating body 44 generates a thrust force depending on the direction in which the fins 50 are formed, one of the seals 58R has a structure in which the spring 60 is built in, and while allowing the rotating body 44 to move in the axial direction,
The sealing property is secured.
【００１４】更に、前記キャップ４２は前述したように
きのこ型とされ、外面が円錐形状の傾斜面となっている
が、この傾斜面部６２に複数のノズル穴６４を穿設して
おり、これを環状凹部５６に連通させている。これによ
りフレキシブル管１４から供給され最終的にキャップ４
２の環状凹部５６に達した洗浄液は、ノズル穴６４を通
じてヘッド１６の外部に噴射される。ノズル穴６４は傾
斜面部６２に形成されているため、ヘッド１６が挿入さ
れている伝熱管１２の内壁面に向けて噴射されるのであ
る。Further, the cap 42 has a mushroom shape as described above, and the outer surface thereof is a conical inclined surface. The inclined surface portion 62 is provided with a plurality of nozzle holes 64. It communicates with the annular recess 56. As a result, it is supplied from the flexible pipe 14 and finally the cap 4
The cleaning liquid that has reached the second annular recess 56 is jetted out of the head 16 through the nozzle hole 64. Since the nozzle hole 64 is formed in the inclined surface portion 62, it is jetted toward the inner wall surface of the heat transfer tube 12 in which the head 16 is inserted.
【００１５】ここで、前記回転体４４の外周面にはブラ
シユニット６６が装着されている。前記ブラシユニット
６６は伝熱管１２の内径寸法、材質および仕上げ程度に
よって任意に選択することができ、必要に応じて交換で
きるようになっている。このため、ブラシユニット６６
は回転体４４に装着されるスリーブ６８と、このスリー
ブ６８の外表面に植設された多数のブラシ繊維７０とか
ら構成している。スリーブ６８は円環リング４８の一端
から軸方向に沿って挿入することにより着脱するように
構成され、円環リング４８の端部に形成した菊型溝７２
を形成するとともに、スリーブ６８の端部に菊型爪７４
を形成し、両者のはめ合いによりブラシユニット６６が
回転体４４とともに回転するようになっている。スリー
ブ６６の抜け止めを図るため、スリーブ６６の端部を押
える金具７６を円環リング４８に螺着するようにしてい
る。もちろん、押え金具７６は周知のワンタッチ装着構
造とすれば交換作業が容易になる。ワンタッチ交換構造
とすれば、例えば遮蔽ボックス内において遠隔操作でも
取替え交換の着脱を簡単かつ容易に行うことができる。A brush unit 66 is mounted on the outer peripheral surface of the rotating body 44. The brush unit 66 can be arbitrarily selected depending on the inner diameter of the heat transfer tube 12, the material, and the degree of finishing, and can be replaced if necessary. Therefore, the brush unit 66
Is composed of a sleeve 68 mounted on the rotating body 44, and a large number of brush fibers 70 planted on the outer surface of the sleeve 68. The sleeve 68 is configured to be attached and detached by being inserted from one end of the annular ring 48 along the axial direction, and the chrysanthemum groove 72 formed at the end of the annular ring 48.
And a chrysanthemum-shaped claw 74 at the end of the sleeve 68.
And the brush unit 66 rotates together with the rotating body 44 by the fitting of the two. In order to prevent the sleeve 66 from coming off, a metal fitting 76 for pressing the end portion of the sleeve 66 is screwed to the annular ring 48. Of course, if the pressing metal fitting 76 has a known one-touch mounting structure, the replacement work becomes easy. With the one-touch replacement structure, the replacement replacement can be easily and easily performed by remote control in the shielding box, for example.
【００１６】なお、ブラシユニット６６のブラシ繊維７
０に代えて、スポンジその他の磨き具を洗浄体として用
いることができ、伝熱管１２の内壁面に回転接触して払
拭する構造のものを用いることができる。The brush fiber 7 of the brush unit 66
Instead of 0, a sponge or other polishing tool can be used as the cleaning body, and a structure having a structure in which the inner wall surface of the heat transfer tube 12 is rotated to contact and wiped can be used.
【００１７】このように構成された管内洗浄装置では、
水圧発生装置２０で発生した高圧洗浄液はフレキシブル
管１４を介して洗浄ヘッド１６に供給される。ヘッド１
６に導入された洗浄液は最初チャンバ３６に入り、通流
穴５２を通じて前端壁３８より吐出され、支持軸４０の
周囲に装着された回転体４４のフィン５０を通過し、キ
ャップ４２の傾斜面部６２に穿設しているノズル穴６４
から伝熱管１２の内壁面に向けて噴射される。ノズル穴
６４は放射状に穿設されており、高圧洗浄液は管内面に
噴出し、この衝撃エネルギによって管内面の付着物を破
壊し、伝熱管１２の前方に押し流しつつ、高圧水噴出湿
式洗浄を行うのである。In the in-pipe cleaning device thus constructed,
The high-pressure cleaning liquid generated by the water pressure generator 20 is supplied to the cleaning head 16 via the flexible pipe 14. Head 1
The cleaning liquid introduced into the chamber 6 first enters the chamber 36, is discharged from the front end wall 38 through the flow hole 52, passes through the fins 50 of the rotating body 44 mounted around the support shaft 40, and the inclined surface portion 62 of the cap 42. Nozzle hole 64 drilled in
Is ejected toward the inner wall surface of the heat transfer tube 12. The nozzle holes 64 are radially provided, and the high-pressure cleaning liquid is ejected to the inner surface of the pipe, and the impact energy destroys the adhered matter on the inner surface of the pipe and causes it to flow toward the front of the heat transfer pipe 12 while performing high-pressure water ejection wet cleaning. Of.
【００１８】なお、ノズル穴６４には一般に噴射方向を
決めるアタッチメントノズルを取付けるようにすればよ
い。It should be noted that an attachment nozzle for generally determining the ejection direction may be attached to the nozzle hole 64.
【００１９】チャンバ３６からキャップ４２に至るヘッ
ド内の通流路に上記した回転体４４のフィン５０が置か
れており、したがってチャンバ３６の通流穴５２から吐
出された高圧洗浄水がフィン５０に回転動力を与える。
フィン５０はその傾斜角度、および高圧水の流量、流速
に応じた回転速度で自動的に回転され、これと一体の円
環リング４８を回転させる。このフィン付き回転体４４
の外周面にはブラシユニット６６が取付けられているた
め、前述した高圧洗浄液で濡らした伝熱管１２の内面を
ブラシ繊維７０が磨き落とし、この際、塵埃の飛散を発
生させることがない。The fin 50 of the rotating body 44 is placed in the flow passage in the head from the chamber 36 to the cap 42. Therefore, the high pressure cleaning water discharged from the flow hole 52 of the chamber 36 is supplied to the fin 50. Gives rotational power.
The fin 50 is automatically rotated at a rotation speed according to its inclination angle, the flow rate of high-pressure water, and the flow velocity, and the annular ring 48 integrated with this is rotated. This finned rotating body 44
Since the brush unit 66 is attached to the outer peripheral surface of the, the brush fibers 70 scrub the inner surface of the heat transfer tube 12, which has been wetted with the high-pressure cleaning liquid, and at this time, dust is not scattered.
【００２０】そして、洗浄ヘッド１６から噴射され除去
付着物を含む洗浄液は、当該ヘッド１６が挿入された伝
熱管１２の他端に流出され、排水管２４からドレンファ
ンネル２６に導かれ、廃液処理システムに送水され、あ
るいは開閉弁３２、３４の操作により、循環管路３０に
導かれてフィルタ２８で浄化して 水圧発生装置２０へ
給水して再利用されるのである。Then, the cleaning liquid ejected from the cleaning head 16 and containing the removed deposits flows out to the other end of the heat transfer pipe 12 in which the head 16 is inserted, is guided from the drain pipe 24 to the drain funnel 26, and the waste liquid treatment system. The water is supplied to the water pressure generator 20 or is supplied to the circulation pipe 30 to be purified by the filter 28 and supplied to the water pressure generation device 20 for reuse.
【００２１】このような実施例では、高圧洗浄液を供給
することにより、ノズル噴射による衝撃エネルギ破壊洗
浄と、ブラシユニット６６の回転による湿式ブラシ洗浄
を同時に行い、自動的に清掃作業を継続することができ
る。また、伝熱管１２の内部での密閉された領域内で洗
浄するため、作業場所の大気中に放射性物質などを撒き
散らすことがない。In such an embodiment, by supplying the high-pressure cleaning liquid, the impact energy destruction cleaning by the nozzle injection and the wet brush cleaning by the rotation of the brush unit 66 can be simultaneously performed to automatically continue the cleaning work. it can. Further, since the cleaning is performed in the sealed area inside the heat transfer tube 12, radioactive substances are not scattered in the atmosphere of the work place.
【００２２】また、洗浄ヘッド１６に装着されたフィン
付き回転体４４は、その円環リング４８部分がチャンバ
前端壁３８とキャップ４２の周端部とに摺動接触してい
るが、ここにはシール５８Ｒ、５８Ｆが介装され、高圧
水の水洩れを防止しながら高速摺動可能としている。こ
の摺動面のシール取付け面側には高圧水が外側に貫通す
る細い溝（図示省略）を付けており、高圧水は潤滑と冷
却の作用を行う。これによって焼き付きの発生を防止し
ている。Further, in the finned rotary member 44 mounted on the cleaning head 16, an annular ring 48 portion thereof is in sliding contact with the chamber front end wall 38 and the peripheral end portion of the cap 42. Seals 58R and 58F are provided to enable high speed sliding while preventing leakage of high pressure water. A thin groove (not shown) through which high-pressure water penetrates is provided on the seal mounting surface side of this sliding surface, and the high-pressure water performs the functions of lubrication and cooling. This prevents the occurrence of image sticking.
【００２３】高圧洗浄液を供給しつつ、この高圧洗浄液
を利用してブラシユニット６６を回転させて伝熱管１２
の内壁面に接触させるため、噴射に供した洗浄液がフレ
キシブル管１４側に逆流することを阻止し、清掃領域を
密閉化することができるとともに、伝熱管１２の延長方
向がどのような方向に伸びた場合にも、その延長方向に
かかわらず洗浄開始でき、伝熱管１２の方向や姿勢に無
関係に洗浄作業を行わせることができる。While supplying the high-pressure cleaning liquid, the brush unit 66 is rotated by using this high-pressure cleaning liquid to rotate the heat transfer tube 12
Since the cleaning liquid supplied to the jet is prevented from flowing backward to the flexible pipe 14 side so as to seal the cleaning area, the extension direction of the heat transfer pipe 12 extends in any direction. In this case, the cleaning can be started regardless of the extension direction, and the cleaning work can be performed regardless of the direction or the posture of the heat transfer tube 12.
【００２４】上記実施例では熱交換器の伝熱管に適用し
た場合について説明したが、同じ原子力プラントや放射
性物質を含まない火力、化学プラント等の各種配管等に
利用できる。In the above embodiment, the case where the invention is applied to the heat transfer tube of the heat exchanger has been described, but it can be used for various pipes of the same nuclear power plant, thermal power not containing radioactive substances, chemical plant and the like.
【００２５】[0025]
【発明の効果】以上説明したように、本発明に係る管内
洗浄装置によれば、大気中に除去付着物を飛散すること
がなく、噴射洗浄と湿式払拭洗浄を同時にかつ自動的に
行うことができるので、短時間で効率的に管内洗浄作業
を行うことができる。特に、洗浄対象が原子力プラント
の伝熱管などである場合には、放射性物質を大気に飛散
することがなく、放射線被曝量を低減でき汚染拡大防止
を図ることができるという優れた効果が得られる。As described above, according to the pipe cleaning apparatus of the present invention, it is possible to automatically and simultaneously perform the jet cleaning and the wet wiping cleaning without scattering the removed deposits in the atmosphere. Therefore, the pipe cleaning work can be efficiently performed in a short time. In particular, when the object to be cleaned is a heat transfer tube of a nuclear power plant, there is an excellent effect that the radioactive material is not scattered into the atmosphere, the radiation exposure amount can be reduced, and the spread of pollution can be prevented.
【図１】実施例の管内洗浄装置の洗浄ヘッド部の横断面
図および縦断面図である。FIG. 1 is a horizontal cross-sectional view and a vertical cross-sectional view of a cleaning head portion of an in-pipe cleaning device according to an embodiment.
【図２】実施例に係る管内洗浄装置の使用状態の全体構
成を示す説明図である。FIG. 2 is an explanatory diagram showing an overall configuration of a pipe cleaning apparatus according to an embodiment in use.
１０ 熱交換器 １２ 伝熱管 １４ フレキシブル管 １６ 洗浄ヘッド ２０ 水圧発生装置 ２４ 排水管 ３６ チャンバ ３８ 前端壁 ４０ 支持軸 ４２ きのこ型キャップ ４４ フィン付き回転体 ４６ 接続口 ４８ 円環リング ５０ フィン ５２ 通流穴 ５６ 環状凹部 ６２ 傾斜面部 ６４ ノズル穴 ６６ ブラシユニット ６８ スリーブ ７０ ブラシ繊維 ７６ 押え金具 10 Heat Exchanger 12 Heat Transfer Pipe 14 Flexible Pipe 16 Cleaning Head 20 Water Pressure Generator 24 Drain Pipe 36 Chamber 38 Front End Wall 40 Support Shaft 42 Mushroom Cap 44 Rotator with Fin 46 Connection Port 48 Annular Ring 50 Fin 52 Through Hole 56 annular recessed part 62 inclined surface part 64 nozzle hole 66 brush unit 68 sleeve 70 brush fiber 76 holding metal fitting
Claims (1)
るとともに洗浄流体が内部に供給されるヘッドを有し、
このヘッドには前記洗浄流体の流れにより回転するフィ
ン付き回転体を取り付け、この回転体の外面に前記管内
を洗浄するブラシ等の洗浄体を設け、前記フィン通過後
の洗浄流体を前記洗浄体より前方で管内面に向けて噴射
するノズル部をヘッドの先端部に形成したことを特徴と
する管内洗浄装置。1. A head, which is formed so that it can be inserted into a pipe to be cleaned and into which a cleaning fluid is supplied,
A rotating body with a fin that rotates by the flow of the cleaning fluid is attached to this head, and a cleaning body such as a brush for cleaning the inside of the pipe is provided on the outer surface of the rotating body, and the cleaning fluid that has passed through the fin is discharged from the cleaning body. An in-pipe cleaning device, characterized in that a nozzle portion for ejecting toward the inner surface of the pipe in front is formed at a tip portion of a head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6238471A JPH0871520A (en) | 1994-09-06 | 1994-09-06 | Intratube cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6238471A JPH0871520A (en) | 1994-09-06 | 1994-09-06 | Intratube cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0871520A true JPH0871520A (en) | 1996-03-19 |
Family
ID=17030735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6238471A Pending JPH0871520A (en) | 1994-09-06 | 1994-09-06 | Intratube cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0871520A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007029895A (en) * | 2005-07-28 | 2007-02-08 | Kurita Engineering Co Ltd | High-pressure cleaning apparatus |
| JP2007146502A (en) * | 2005-11-29 | 2007-06-14 | Kubota Corp | Pipeline interior cleaning device |
| JP2007154461A (en) * | 2005-12-02 | 2007-06-21 | Tsumarinuki 24:Kk | Cleaning auxiliary implement in cleaning device for drain pipe |
| JP2009285521A (en) * | 2008-05-27 | 2009-12-10 | Turboblade:Kk | Pipeline cleaning apparatus |
| KR100957910B1 (en) * | 2007-11-23 | 2010-05-13 | 주식회사 포스코 | Apparatus for gringing inner surface of pipe |
| JP2013085380A (en) * | 2011-10-11 | 2013-05-09 | Chugoku Electric Power Co Inc:The | Auxiliary device for removing cable-in-pipe and cable-in-pipe removal system equipped with the same |
| JP2014079695A (en) * | 2012-10-16 | 2014-05-08 | Nippon Telegr & Teleph Corp <Ntt> | Cleaning device |
| KR20170000847A (en) | 2015-06-24 | 2017-01-04 | 한전원자력연료 주식회사 | Degreasing device and degreasing method for the inner surface of steam generator tube |
| KR20170000849A (en) | 2015-06-24 | 2017-01-04 | 한전원자력연료 주식회사 | Degreasing system and degreasing method for steam generator tubes in nuclear power plants |
| CN110935699A (en) * | 2019-12-03 | 2020-03-31 | 黄德贵 | Hydraulic engineering dredging equipment |
| KR20220070871A (en) * | 2020-11-23 | 2022-05-31 | 한국생산기술연구원 | Selective polishing device for irregular internal channels |
-
1994
- 1994-09-06 JP JP6238471A patent/JPH0871520A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007029895A (en) * | 2005-07-28 | 2007-02-08 | Kurita Engineering Co Ltd | High-pressure cleaning apparatus |
| JP2007146502A (en) * | 2005-11-29 | 2007-06-14 | Kubota Corp | Pipeline interior cleaning device |
| JP2007154461A (en) * | 2005-12-02 | 2007-06-21 | Tsumarinuki 24:Kk | Cleaning auxiliary implement in cleaning device for drain pipe |
| KR100957910B1 (en) * | 2007-11-23 | 2010-05-13 | 주식회사 포스코 | Apparatus for gringing inner surface of pipe |
| JP2009285521A (en) * | 2008-05-27 | 2009-12-10 | Turboblade:Kk | Pipeline cleaning apparatus |
| JP2013085380A (en) * | 2011-10-11 | 2013-05-09 | Chugoku Electric Power Co Inc:The | Auxiliary device for removing cable-in-pipe and cable-in-pipe removal system equipped with the same |
| JP2014079695A (en) * | 2012-10-16 | 2014-05-08 | Nippon Telegr & Teleph Corp <Ntt> | Cleaning device |
| KR20170000847A (en) | 2015-06-24 | 2017-01-04 | 한전원자력연료 주식회사 | Degreasing device and degreasing method for the inner surface of steam generator tube |
| KR20170000849A (en) | 2015-06-24 | 2017-01-04 | 한전원자력연료 주식회사 | Degreasing system and degreasing method for steam generator tubes in nuclear power plants |
| CN110935699A (en) * | 2019-12-03 | 2020-03-31 | 黄德贵 | Hydraulic engineering dredging equipment |
| CN110935699B (en) * | 2019-12-03 | 2021-11-05 | 宁夏玺程建设工程有限公司 | Hydraulic engineering dredging equipment |
| KR20220070871A (en) * | 2020-11-23 | 2022-05-31 | 한국생산기술연구원 | Selective polishing device for irregular internal channels |
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