JPH07328576A - Washing of piping - Google Patents
Washing of pipingInfo
- Publication number
- JPH07328576A JPH07328576A JP6141088A JP14108894A JPH07328576A JP H07328576 A JPH07328576 A JP H07328576A JP 6141088 A JP6141088 A JP 6141088A JP 14108894 A JP14108894 A JP 14108894A JP H07328576 A JPH07328576 A JP H07328576A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- pipe
- washing
- water
- piping
- 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
Landscapes
- Cleaning In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地域冷暖房装置等にお
ける配管内の洗浄を行うための配管洗浄方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cleaning method for cleaning the inside of a pipe in a district heating and cooling device or the like.
【０００２】[0002]
【従来の技術】配管、例えば地域冷暖房装置における配
管は、その施工時における配管溶接やシール剤を用いた
配管接続等によって、内部に溶接スラグやカス、亜鉛ス
ラッジ等の汚物（異物）が多く存在することになる。し
たがって、配管完了直後からすぐに地域冷暖房の運転を
そのまま開始したのでは、配管途中にあるストレ−ナが
目詰まりしたり、配管途中にある各種弁の機能が損なわ
れることになる。2. Description of the Related Art Piping, for example, piping in a district heating and cooling system, contains a large amount of waste slag, dust, zinc sludge, and other foreign matter (foreign matter) due to welding of pipes and connection of pipes using a sealant during construction. Will be done. Therefore, if the district heating and cooling operation is started immediately after the completion of the piping, the strainer in the middle of the piping will be clogged, and the functions of various valves in the middle of the piping will be impaired.
【０００３】このため、従来は、配管完了後に、洗浄対
象となる洗浄配管を含む洗浄水の循環系路を構成すると
共に、この循環系路途中に汚物のトラップを設けるよう
にしていた（フラッシング）。しかしながら、このよう
な洗浄水の循環による配管洗浄は、水張り→エア抜き→
循環→水抜きの工程を何回も繰り返し行わなければなら
ないので、洗浄対象となる配管の全容積の数倍ないし数
十倍というように極めて多量の洗浄水を必要とし、しか
も２〜４週間程度というように極めて長期間要するもの
となる。For this reason, conventionally, after the completion of piping, a circulation path for cleaning water including a cleaning pipe to be cleaned is constructed, and a trap for waste is provided in the middle of the circulation path (flushing). . However, pipe cleaning by circulating such cleaning water is water filling → air bleeding →
Since the process of circulation → drainage must be repeated many times, an extremely large amount of cleaning water is required, such as several times to several tens of times the total volume of the pipe to be cleaned, and about 2 to 4 weeks. So it takes a very long time.
【０００４】配管洗浄を短時間でおこなうため、洗浄液
として酸を用いることもおこなわれているが、この場合
も酸を多量に必要とするばかりでなく、酸の取り扱いと
いう点を十分考慮する必要がある（酸による配管系路の
損傷可能性や洗浄後の酸の処理というものを考慮する必
要がある）。Acid is used as a cleaning liquid in order to clean the pipes in a short time. In this case, too, not only a large amount of acid is required, but also the point of handling the acid needs to be fully considered. Yes (possible consideration of acid damage to pipelines and acid treatment after cleaning).
【０００５】[0005]
【発明が解決しようとする課題】本発明は以上のような
事情を勘案してなされたもので、洗浄液の使用が少なく
てすみ、しかも短時間で洗浄を行うことができるように
した配管の洗浄方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and requires less cleaning liquid, and the cleaning of pipes can be performed in a short time. The purpose is to provide a method.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明にあっては次のような構成としてある。すな
わち、洗浄対象となる洗浄配管の一端部側から真空引き
して該洗浄配管内の圧力を大きな負圧としつつ、該洗浄
配管の他端部側から空気と洗浄液とを供給する、ような
構成としてある。上記構成を前提とした好ましい態様
は、特許請求の範囲における請求項２〜請求項７に記載
のとおりである。In order to achieve the above object, the present invention has the following configuration. That is, a structure in which air and a cleaning liquid are supplied from the other end side of the cleaning pipe while a vacuum is drawn from one end side of the cleaning pipe to be cleaned to make the pressure in the cleaning pipe a large negative pressure. There is. Preferred modes based on the above configuration are as described in claims 2 to 7 in the claims.
【０００７】また、本発明のより具体的な構成として
は、次のようにされる。すなわち、洗浄対象となる洗浄
配管の一端部側にポンプを接続すると共に、該洗浄配管
の他端部側に空気と洗浄水との供給装置を接続する準備
工程と、前記ポンプを運転して、前記洗浄配管内の圧力
を大きな負圧とする負圧生成工程と、前記ポンプの運転
を継続して前記洗浄配管内を大きな負圧に維持しつつ、
前記供給装置を作動させて該洗浄配管内に空気と洗浄水
とを供給する洗浄工程と、を備えて、前記洗浄水の供給
が、該洗浄水が洗浄配管内壁に激しく衝突しならがら該
洗浄配管の一端部側へと流れるように、少しづつ行われ
る、ような構成とされる。A more specific structure of the present invention is as follows. That is, a pump is connected to one end side of the cleaning pipe to be cleaned, and a preparation step of connecting a supply device of air and cleaning water to the other end side of the cleaning pipe, and the pump is operated, While maintaining a large negative pressure in the cleaning pipe by continuing the operation of the pump and a negative pressure generation step of making the pressure in the cleaning pipe a large negative pressure,
A cleaning step of operating the supply device to supply air and cleaning water into the cleaning pipe, the cleaning water being supplied when the cleaning water violently collides with the inner wall of the cleaning pipe. It is constructed so that it is performed little by little so that it flows toward one end of the pipe.
【０００８】[0008]
【発明の作用】真空引きされた洗浄配管内に空気と洗浄
液とが供給されることにより、洗浄配管内はあたかも暴
風雨のような雰囲気、つまり洗浄液が洗浄配管の内壁に
激しく衝突しつつ洗浄配管の一端部側へと流れていき、
洗浄配管が効果的に洗浄されることになる。By supplying air and cleaning liquid into the vacuumed cleaning pipe, the interior of the cleaning pipe is as if it were a storm, that is, the cleaning liquid collides violently against the inner wall of the cleaning pipe. It flows to one end side,
The cleaning pipe will be effectively cleaned.
【０００９】[0009]
【発明の効果】請求項１に記載された発明によれば、空
気と洗浄液とを供給している時間、つまり実質的に洗浄
を行っている時間は通常であれば数１０分ですみ、洗浄
時間が極めて短いものとなる。また、洗浄効果が高いの
で、使用する洗浄液の量も少なくてすむものとなる。さ
らに、作業労力もかなり軽減されたものとなる。なお、
洗浄は、洗浄液が洗浄配管の内壁に激しく衝突するとい
う物理的な作用によって効果的に行われるので、洗浄液
として特別に酸のようなものを用いる必要はことさら生
じないものである。According to the invention described in claim 1, the time during which the air and the cleaning liquid are supplied, that is, the time during which the cleaning is substantially performed is normally several tens of minutes. The time is extremely short. Also, since the cleaning effect is high, the amount of cleaning liquid used can be small. In addition, the work labor is considerably reduced. In addition,
The cleaning is effectively performed by the physical action of the cleaning liquid violently colliding with the inner wall of the cleaning pipe, so that it is not necessary to use an acid as the cleaning liquid.
【００１０】請求項２に記載したような構成とすること
により、洗浄配管の洗浄が完了したか否かを、透視配管
内の流れが汚れているか清浄であるかを見ることによっ
て、容易に知ることができる。With the configuration as described in claim 2, whether or not the cleaning of the cleaning pipe is completed can be easily known by checking whether the flow in the transparent pipe is dirty or clean. be able to.
【００１１】請求項３に記載したような構成とすること
により、洗浄配管からの汚物を気液分離装置に貯溜して
おくことができ、また、ポンプへこの汚物が到達するの
を防止してポンプの損傷を防止する上で好ましいものと
なる。With the construction as described in claim 3, it is possible to store the waste from the cleaning pipe in the gas-liquid separation device and prevent the waste from reaching the pump. This is preferable in preventing damage to the pump.
【００１２】請求項４に記載したような構成とすること
により、特に配管内の汚物の存在が問題となる地域冷暖
房用の配管を洗浄する上で効果的である。また、請求項
５に記載したような構成とすることにより、地域冷暖房
装置の運転開始後における配管内の汚物に起因した異常
事態発生を未然に防止することができる。特に、地域冷
暖房装置は、複数のビルが対象になる等極めて大がかり
であり、したがって、配管内の汚物に起因する異常事態
発生を未然に防止するということは、この異常事態発生
に起因する地域冷暖房装置の運転停止という影響の大き
さを考えると極めて効果的である。[0012] With the structure as described in claim 4, it is particularly effective for cleaning the district cooling and heating pipes in which the presence of dirt in the pipes poses a problem. Further, with the configuration as described in claim 5, it is possible to prevent the occurrence of an abnormal situation due to the waste in the pipe after the operation of the district heating and cooling apparatus is started. In particular, district heating and cooling systems are extremely large, such as targeting multiple buildings. Therefore, preventing the occurrence of abnormal situations due to waste in pipes means that district heating and cooling systems are caused by such abnormal situations. This is extremely effective when considering the magnitude of the effect of stopping the operation of the device.
【００１３】請求項６に記載したような構成とすること
により、洗浄液として水を用いることにより、本発明を
安価にかつ容易に実施化する上で好ましいものとなる。With the structure as described in claim 6, the use of water as the cleaning liquid is preferable in implementing the present invention at low cost and easily.
【００１４】請求項７に記載したような構成とすること
により、洗浄液の消費を極力抑制しつつ、洗浄液の洗浄
配管内壁に対する激しい衝突を十分確保する上で好まし
いものとなる。With the structure as described in claim 7, it is preferable in that the consumption of the cleaning liquid is suppressed as much as possible and the violent collision of the cleaning liquid with the inner wall of the cleaning pipe is sufficiently secured.
【００１５】請求項８に記載された発明によれば、請求
項１、請求項６、請求項７に対応した効果を得ることが
できる。According to the invention described in claim 8, it is possible to obtain the effects corresponding to claims 1, 6, and 7.
【００１６】[0016]
【実施例】以下本発明の実施例を添付した図面に基づい
て説明する。図１の説明 先ず、図１を参照しつつ、本発明の原理的な事項につい
て説明する。この図１において、１は洗浄対象となる洗
浄配管であり、洗浄配管１の一端部１ａには、真空引き
用のポンプ２が接続される。このポンプ２と洗浄配管１
の一端部１ａとの間には、洗浄配管１側から順次、内部
が透視可能な透視配管３、圧力計４、吸引ホ−ス５、気
液分離装置６が接続される。なお、透視配管３は、全体
的に透明あるいは半透明であってもよいが、部分的に透
視部分（透視窓）を設けた構成であってもよい。Embodiments of the present invention will be described below with reference to the accompanying drawings. Description of FIG. 1 First, the principle of the present invention will be described with reference to FIG. In FIG. 1, reference numeral 1 denotes a cleaning pipe to be cleaned, and a pump 2 for vacuuming is connected to one end 1a of the cleaning pipe 1. This pump 2 and cleaning pipe 1
A transparent pipe 3, a pressure gauge 4, a suction hose 5, and a gas-liquid separation device 6 that allow the inside to be seen are sequentially connected to the one end 1a of the cleaning pipe 1 from the cleaning pipe 1 side. The transparent pipe 3 may be wholly transparent or translucent, or may be partially provided with a transparent portion (a transparent window).
【００１７】洗浄配管１の他端部１ｂには、３方ソケッ
ト１０の第１接続部１０ａが接続されている。この３方
ソケット１０の第２接続部１０ｂには、手動式のボ−ル
バルブ１１、圧力計１２を介して、洗浄水の供給ホ−ス
１３が接続される。供給ホ−ス１３は、給水源に接続さ
れるが、洗浄配管１の口径にもよるが毎分５０リットル
以上の洗浄水を供給できるように設定される。近くに適
当な給水源がないときは、供給ホ−ス１３を、別途用意
した小型の水道水貯溜タンク（供給ポンプ付きであって
もよい）に接続すればよい。３方ソケット１０の第３接
続部１０ｃには、圧力計（負圧計）１４を介して、手動
式のボ−ルバルブ１５が接続される。このバルブ１５は
空気吸引用である。The other end 1b of the cleaning pipe 1 is connected to the first connecting portion 10a of the three-way socket 10. A wash water supply hose 13 is connected to the second connection portion 10b of the three-way socket 10 via a manual ball valve 11 and a pressure gauge 12. The supply hose 13 is connected to a water supply source and is set so as to be able to supply 50 liters or more of cleaning water per minute depending on the diameter of the cleaning pipe 1. When there is no suitable water supply source nearby, the supply hose 13 may be connected to a separately prepared small-sized tap water storage tank (which may be equipped with a supply pump). A manual ball valve 15 is connected to the third connecting portion 10c of the three-way socket 10 via a pressure gauge (negative pressure gauge) 14. This valve 15 is for air suction.
【００１８】以上のような構成において、洗浄配管１の
洗浄に際しての準備として、図１に示すように、当該洗
浄配管１に対して、各種機器類２〜６、１０〜１５が接
続される。次に、バルブ１１、１５を閉じた状態で、ポ
ンプ２を運転することにより、洗浄配管１内を真空引き
する。圧力計１４を見ることにより、洗浄配管１内が所
定負圧以上の高負圧になったことを確認した後、バルブ
１１および１５を開いて、洗浄配管１内に洗浄水と空気
とを供給する。このとき、洗浄完了するまでは、ポンプ
２の運転は継続される。In the above-mentioned structure, as shown in FIG. 1, various equipments 2 to 6 and 10 to 15 are connected to the cleaning pipe 1 as a preparation for cleaning the cleaning pipe 1. Next, the inside of the cleaning pipe 1 is evacuated by operating the pump 2 with the valves 11 and 15 closed. After confirming that the inside of the cleaning pipe 1 has become a high negative pressure equal to or higher than a predetermined negative pressure by looking at the pressure gauge 14, the valves 11 and 15 are opened to supply the cleaning water and the air into the cleaning pipe 1. To do. At this time, the operation of the pump 2 is continued until the cleaning is completed.
【００１９】供給された空気と洗浄水とは、洗浄配管１
の他端部１ｂから一端部１ａへと流れるが、このとき、
洗浄配管１内が高負圧であるため、洗浄配管１内の雰囲
気はあたかも暴風雨のような状態となる。つまり、洗浄
水は、洗浄配管１内を流れる間に、その内壁に激しく衝
突して、当該内壁を洗浄する。このとき、上記暴風雨の
状態が十分に維持されるように、洗浄水の供給は少しず
つ行われる。つまり、洗浄水は、洗浄配管１の断面全体
を洗浄水で覆うことのないような状態で、液滴の状態で
洗浄配管１の内壁に衝突するような状態で供給するのが
好ましい。また、空気の供給は、圧力計１４を見つつ、
負圧が一定以上低下しないように（大気圧に近付かない
ように）、つまり洗浄水の洗浄配管内壁への衝突エネル
ギが所定以上となるように、行なわれる。The supplied air and cleaning water are used for cleaning pipe 1
Flows from the other end 1b to the one end 1a. At this time,
Since the inside of the cleaning pipe 1 has a high negative pressure, the atmosphere inside the cleaning pipe 1 is as if it were a storm. That is, the wash water violently collides with the inner wall of the wash pipe 1 while flowing through the wash pipe 1 to wash the inner wall. At this time, the cleaning water is supplied little by little so that the above-mentioned stormy condition is sufficiently maintained. That is, it is preferable that the cleaning water be supplied in a state where the entire cross section of the cleaning pipe 1 is not covered with the cleaning water and in a state of colliding with the inner wall of the cleaning pipe 1 in the state of droplets. In addition, as for the air supply, looking at the pressure gauge 14,
It is performed so that the negative pressure does not decrease more than a certain level (not approaching the atmospheric pressure), that is, the collision energy of the cleaning water with the inner wall of the cleaning pipe becomes a predetermined value or more.
【００２０】洗浄により、洗浄配管１内の汚物は、空気
および洗浄水と共に、その一端部１ａ側へと流れる。洗
浄配管１の一端部１ａを通過した空気と洗浄水と汚物と
は、気液分離装置６によって、空気と洗浄水および汚物
とに分離されて、空気のみがポンプ２へ吸引されて大気
へ放出され、洗浄水と汚物とは気液分離装置６に貯溜さ
れる。By the cleaning, the dirt in the cleaning pipe 1 flows to the one end 1a side together with the air and the cleaning water. The air, cleaning water, and dirt that have passed through one end 1a of the cleaning pipe 1 are separated into air, cleaning water, and dirt by the gas-liquid separation device 6, and only air is sucked into the pump 2 and released to the atmosphere. Then, the cleaning water and the dirt are stored in the gas-liquid separation device 6.
【００２１】透視配管３を外部から目視したとき、内部
の流れが汚れていれば、洗浄未完了ということで、前述
した洗浄作業が継続される。透視配管３内の流れがきれ
いになったことを確認した段階で、洗浄配管１の洗浄が
完了ということになる。洗浄完了が確認された後は、ポ
ンプ２の運転が停止され、洗浄水と空気の供給も停止さ
れる。そして、洗浄配管１は、各種機器類２〜６、１０
〜１５の接続が外されて、正規の使用接続状態へと復帰
される。When the transparent pipe 3 is visually inspected from the outside, if the internal flow is dirty, it means that the cleaning is not completed, and the above-mentioned cleaning work is continued. When it is confirmed that the flow inside the transparent pipe 3 is clean, the cleaning of the cleaning pipe 1 is completed. After the completion of cleaning is confirmed, the operation of the pump 2 is stopped and the supply of cleaning water and air is also stopped. Then, the cleaning pipe 1 includes various devices 2 to 6 and 10
The connection of ~ 15 is disconnected and the normal use connection state is restored.
【００２２】本発明の効果を確認するため、２本の冷温
水配管（３５０Ａで長さ１８７ｍのものと、３００Ａで
長さ１７８ｍのもの）を洗浄配管１として洗浄を行った
ところ、洗浄結果は極めて良好であった。各種機器類の
接続開始から、洗浄完了して各種機器類の取り外しまで
の時間を含めて、要した作業時間は、約４時間であっ
た。この洗浄に際して、洗浄配管１内の風速が４０ｍ／
ｓ以上となるように負圧の大きさを維持し、使用した洗
浄水の量は約４ｔ（４０００リットル）であった。な
お、真空引き開始から、所定負圧になる（洗浄水と空気
との供給開始可能状態になる）までの時間は、各配管共
に約１０分であった。In order to confirm the effect of the present invention, two cold and hot water pipes (350 A, length 187 m and 300 A, length 178 m) were used as the cleaning pipe 1, and the cleaning results were as follows. It was extremely good. The work time required was about 4 hours including the time from the start of connection of various devices to the completion of cleaning and removal of various devices. At the time of this cleaning, the wind speed in the cleaning pipe 1 is 40 m /
The magnitude of the negative pressure was maintained so as to be s or more, and the amount of washing water used was about 4 t (4000 liters). The time from the start of evacuation to the predetermined negative pressure (the state in which the supply of cleaning water and air can be started) was about 10 minutes for each pipe.
【００２３】ここで、使用する洗浄水の量は、洗浄配管
１の全容積の数分の１ないし数十分の１（１／５〜１／
２０程度）でよく、通常は１／１０前後（１／８〜１／
１２）の洗浄水を用意しておけば十分である。勿論、使
用する洗浄水の量は、洗浄配管１の汚れがひどいほど多
くなる傾向にある。Here, the amount of washing water used is a fraction of the total volume of the washing pipe 1 to a few tens of minutes (1/5 to 1/1).
20), usually around 1/10 (1/8 to 1 /)
It is enough to prepare the washing water of 12). Of course, the amount of cleaning water used tends to increase as the cleaning pipe 1 becomes more contaminated.
【００２４】図２の説明 図２は、図１に示されるポンプ２、吸引ホ−ス５および
気液分離装置６を搭載した自動車を示し、実施例では、
兼松エンジニアリング株式会社製の商品名パワ−プロペ
スタ−（ＳＰ−０４ＢＨＰで、ポンプ駆動馬力９８馬
力、最大風量４１ｍ3 、最大負圧−７００ｍｍＨｇ）を
用いてある。この図２において、気液分離装置６は、吸
引ホ−ス５が接続された大きな容量を有するタンク２１
と、タンク２１に連なるサイクロン２２と、サイクロン
２２に連なるウオ−タクリ−ニング２３とから構成され
ている。また、ポンプ２は、湿式ル−ツブロアとされ、
４次キャッチャ−２４で湿式ポンプ２の循環水が確保さ
れている。なお、空気の流れが、図中矢印で示される。
このように、ポンプ２等を自動車に搭載した形式として
おくことにより、洗浄の現場への移動を、他の機器類の
搬送と共に容易に行うことができる。この自動車には、
洗浄水を貯溜する圧送ポンプ付きのタンクを搭載してお
くこともできる。 Description of FIG . 2 FIG . 2 shows an automobile equipped with the pump 2, the suction hose 5 and the gas-liquid separator 6 shown in FIG.
Kanematsu Engineering Co., Ltd. trade name Power Propeller (SP-04BHP, pump drive horsepower 98 horsepower, maximum air volume 41 m 3 , maximum negative pressure -700 mmHg) is used. In FIG. 2, the gas-liquid separation device 6 includes a tank 21 having a large capacity to which the suction hose 5 is connected.
And a cyclone 22 connected to the tank 21, and a water cleaning 23 connected to the cyclone 22. Further, the pump 2 is a wet roots blower,
Circulating water of the wet pump 2 is secured by the fourth catcher 24. The flow of air is indicated by arrows in the figure.
As described above, by providing the pump 2 and the like in the form of being mounted on the automobile, the cleaning can be easily moved to the site along with the transportation of other devices. This car has
It is also possible to install a tank with a pump for storing cleaning water.
【００２５】図３の説明 図３は、地域冷暖房装置において、ビル内の配管例と、
この配管を本発明により洗浄する場合の具体例を示すも
のである。この図３において、冷暖房用の冷温水（蒸気
の場合もあり）は、地域用共通配管３０に連なる供給配
管３１から、第１サプライヘッダ３２に供給され、この
第１サプライヘッダ３２から、ポンプ３３が接続された
配管３４を経て第２サプライヘッダ３５に供給される。
冷温水は、第２サプライヘッダ３５から、複数の各独立
配管３６を経て、各空調装置３７に供給される。 Description of FIG. 3 FIG. 3 shows an example of piping in a building in a district heating and cooling system.
It shows a specific example in the case of cleaning this piping according to the present invention. In FIG. 3, cold / hot water for cooling / heating (may be steam) is supplied to a first supply header 32 from a supply pipe 31 connected to a regional common pipe 30, and a pump 33 is supplied from the first supply header 32. Is supplied to the second supply header 35 via the pipe 34 connected to.
The cold / hot water is supplied from the second supply header 35 to each air conditioner 37 via each of the plurality of independent pipes 36.
【００２６】各空調装置３７からの戻り冷温水は、独立
配管４１からリタ−ンヘッダ４２へ戻され、リタ−ンヘ
ッダ４２から戻り配管４３を経て、地域用共通戻り配管
４４へ戻される。なお、リタ−ンヘッダ４２からの冷温
水の一部が、配管４５を経て、第２サプライヘダ３５へ
戻される。なお、図中符合５１は圧力計、５２はＹスト
レ−ナ、５３は圧力調整弁、５４は電磁流量計である。
また、図中一点鎖線よりも右方側が、ビル内の配管を示
す。The return cold / hot water from each air conditioner 37 is returned from the independent pipe 41 to the return header 42, from the return header 42 to the return pipe 43, and then to the common return pipe 44 for the region. It should be noted that part of the cold / hot water from the return header 42 is returned to the second supply header 35 via the pipe 45. In the figure, reference numeral 51 is a pressure gauge, 52 is a Y strainer, 53 is a pressure adjusting valve, and 54 is an electromagnetic flow meter.
The right side of the dashed line in the figure shows the piping inside the building.
【００２７】前記配管系の洗浄を、配管施工後で、かつ
地域冷暖房の運転開始前におこなうため、例えば３つの
バイパス配管６１〜６３が設けられる。このバイパス配
管６１〜６３は、あらかじめ施工しておくのが好ましい
ものであるが、施工されていないときは、洗浄時に、別
途配管することになる。In order to wash the pipe system after the pipe construction and before the start of the district heating and cooling operation, for example, three bypass pipes 61 to 63 are provided. It is preferable to construct the bypass pipes 61 to 63 in advance. However, when the bypass pipes 61 to 63 are not constructed, the bypass pipes 61 to 63 are separately provided at the time of cleaning.
【００２８】図３に示す状態において、洗浄すべき配管
系統毎に、吸引口つまりポンプ２の接続口と、注入口つ
まり洗浄水および空気の供給位置とを示すこととする。
なお、洗浄に際しては、洗浄系路以外の弁は全て閉じら
れ、圧力計５１やＹストレ−５２、圧力調整弁５３、お
よび流量計５４に関する弁は全て閉じられる。In the state shown in FIG. 3, the suction port, that is, the connection port of the pump 2 and the injection port, that is, the supply position of the cleaning water and the air are shown for each piping system to be cleaned.
At the time of cleaning, all the valves except the cleaning system passage are closed, and the valves related to the pressure gauge 51, the Y-strain 52, the pressure adjusting valve 53, and the flow meter 54 are all closed.
【００２９】(1)ポンプ２の接続口が第２サプライヘッ
ダ３５の予備フランジＫ１で、洗浄水と空気の注入口が
リタ−ンヘッダ４２の予備フランジＴ１としたとき。こ
のときの洗浄系路は、戻り配管４３、バイパス配管６
１、６２、６３、供給配管３１、第１サプライヘッダ３
２、配管３４、第２サプライヘッダ３５となる。 (2)ポンプ２の接続口と洗浄水の注入口との位置を上記
(1)と同じとして、開閉弁の開閉状態の切換えにより、
リタ−ンヘッダ４２から配管４５を経て、第２サプライ
ヘッダ３５という系路の洗浄を選択し得る。(1) When the connection port of the pump 2 is the spare flange K1 of the second supply header 35 and the inlet for the cleaning water and air is the spare flange T1 of the return header 42. The cleaning system path at this time includes the return pipe 43 and the bypass pipe 6.
1, 62, 63, supply pipe 31, first supply header 3
2, the pipe 34, and the second supply header 35. (2) The position of the connection port of pump 2 and the injection port of washing water is as above.
Same as (1), by switching the open / close state of the open / close valve,
It is possible to select the cleaning of the system line of the second supply header 35 from the return header 42 through the pipe 45.
【００３０】(3)ポンプ２の接続口を第２サプライヘッ
ダ３５の予備フランジＫ１とし、洗浄水の注水口を、配
管４１のうち空調装置３７に近いＴ２位置とする。この
ときは、配管４１の洗浄が行われる。 (4)ポンプ２の接続口をＴ１とし、洗浄水の注入口を、
配管３６のうち空調装置３７に近いＴ３位置とする。こ
のときは、配管３６の洗浄が行われる。(3) The connection port of the pump 2 is the spare flange K1 of the second supply header 35, and the washing water injection port is at the position T2 of the pipe 41 near the air conditioner 37. At this time, the pipe 41 is washed. (4) T1 is the connection port of pump 2 and
The position of the pipe 36 is T3, which is close to the air conditioner 37. At this time, the pipe 36 is washed.
【００３１】以上実施例について説明したが、本発明
は、地域冷暖房装置用の配管の洗浄に限らず、他の配管
の洗浄、例えば給水管における本管の洗浄（新設時での
洗浄が好ましい）、雑用水（中水）管における本管や揚
水管の洗浄、スラリ−管の洗浄等にも適用して好適とな
る。勿論、地域冷暖房装置において、ビル内の配管に限
らず、各ビルに共通の共通配管の洗浄を行う場合にも本
発明は効果的である。Although the embodiments have been described above, the present invention is not limited to cleaning pipes for district heating and cooling systems, but cleaning other pipes, for example, cleaning main pipes in water supply pipes (cleaning at the time of new installation is preferable). It is also suitable for application to washing of main pipes and pumping pipes for miscellaneous water (medium water) pipes, washing of slurry pipes and the like. Of course, in the district heating and cooling apparatus, the present invention is effective not only for cleaning the piping in the building but also for cleaning the common piping common to each building.
【００３２】また、用いる洗浄液としては、安価かつ容
易に入手できるという点で水を用いるのが好ましいが、
洗浄対象となる配管やこれに接続された機器類との関係
で問題がなければ、酸を含めて従来既知の水以外の洗浄
液を適宜利用することができる。As the cleaning liquid to be used, it is preferable to use water because it is inexpensive and easily available.
If there is no problem in relation to the pipe to be cleaned and the equipment connected to it, a conventionally known cleaning liquid other than water can be appropriately used, including acid.
【図１】本発明の一実施例を示す系統図。FIG. 1 is a system diagram showing an embodiment of the present invention.
【図２】ポンプ等を搭載した自動車の一例を示す図。FIG. 2 is a diagram showing an example of an automobile equipped with a pump and the like.
【図３】地域冷暖房装置におけるビル内の配管例を示す
系統図。FIG. 3 is a system diagram showing an example of piping in a building in a district heating and cooling system.
【符合の説明】 １：洗浄配管 １ａ：一端部 １ｂ：他端部 ２：ポンプ ３：透視可能配管 ６：気液分離装置 １３：洗浄水供給ホ−ス １４：圧力計（負圧計） １５：空気供給バルブ[Description of References] 1: Washing pipe 1a: One end 1b: Other end 2: Pump 3: Transparent pipe 6: Gas-liquid separator 13: Wash water supply hose 14: Pressure gauge (negative pressure gauge) 15: Air supply valve
Claims (8)
空引きして該洗浄配管内の圧力を大きな負圧としつつ、
該洗浄配管の他端部側から空気と洗浄液とを供給する、
ことを特徴とする配管の洗浄方法。1. A vacuum is evacuated from one end side of a cleaning pipe to be cleaned to make a large negative pressure in the cleaning pipe,
Air and a cleaning liquid are supplied from the other end side of the cleaning pipe,
A method for cleaning a pipe, which is characterized in that
部が透視可能な透視配管が接続されているもの。2. The transparent pipe according to claim 1, wherein a transparent pipe through which the inside can be seen is connected between the pump for vacuuming and the cleaning pipe.
続されているもの。3. The gas-liquid separator according to claim 1, wherein a gas-liquid separator is connected between the pump and the cleaning pipe.
もの。4. The pipe according to claim 1, wherein the cleaning pipe is a pipe for a district cooling and heating device.
行われるもの。5. The pipe cleaning according to claim 4, wherein the pipe cleaning is performed before the operation of the district heating and cooling apparatus is started.
おいて、 前記洗浄液が、水であるもの。6. The cleaning liquid according to any one of claims 1 to 5, wherein the cleaning liquid is water.
おいて、 前記洗浄液の供給が、該洗浄液が該洗浄配管内壁に激し
く衝突しならがら該洗浄配管の一端部側へと流れるよう
な雰囲気となるように、少しずつ行われるもの。7. The cleaning liquid according to any one of claims 1 to 6, wherein the cleaning liquid is supplied to one end of the cleaning pipe while the cleaning liquid violently collides with the inner wall of the cleaning pipe. It is done little by little to create an atmosphere.
プを接続すると共に、該洗浄配管の他端部側に空気と洗
浄水との供給装置を接続する準備工程と、 前記ポンプを運転して、前記洗浄配管内の圧力を大きな
負圧とする負圧生成工程と、 前記ポンプの運転を継続して前記洗浄配管内を大きな負
圧に維持しつつ、前記供給装置を作動させて該洗浄配管
内に空気と洗浄水とを供給する洗浄工程と、を備えて、 前記洗浄水の供給が、該洗浄水が洗浄配管内壁に激しく
衝突しならがら該洗浄配管の一端部側へと流れるよう
に、少しづつ行われる、ことを特徴とする配管の洗浄方
法。8. A preparatory step of connecting a pump to one end side of a cleaning pipe to be cleaned and connecting a supply device of air and cleaning water to the other end side of the cleaning pipe; and operating the pump. Then, a negative pressure generating step of setting the pressure in the cleaning pipe to a large negative pressure, and maintaining the inside of the cleaning pipe at a large negative pressure by continuing the operation of the pump to operate the supply device, A cleaning step of supplying air and cleaning water into the cleaning pipe, and the supply of the cleaning water flows to one end side of the cleaning pipe while the cleaning water violently collides with the inner wall of the cleaning pipe. The method for cleaning pipes is characterized by being carried out little by little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06141088A JP3134668B2 (en) | 1994-05-31 | 1994-05-31 | How to clean piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06141088A JP3134668B2 (en) | 1994-05-31 | 1994-05-31 | How to clean piping |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000175381A Division JP2001038315A (en) | 2000-01-01 | 2000-06-12 | Rinsing of pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07328576A true JPH07328576A (en) | 1995-12-19 |
| JP3134668B2 JP3134668B2 (en) | 2001-02-13 |
Family
ID=15283930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06141088A Expired - Lifetime JP3134668B2 (en) | 1994-05-31 | 1994-05-31 | How to clean piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3134668B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010264336A (en) * | 2009-05-12 | 2010-11-25 | Shirokatsu Ura | Method of washing drain pipe connected to disposer |
| CN109759406A (en) * | 2019-03-01 | 2019-05-17 | 广州检验检测认证集团有限公司 | A kind of Quick cleaning device and its working method for complicated porous absorbent bottle |
| KR102250595B1 (en) * | 2020-12-31 | 2021-05-11 | 최병선 | Pipe washing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49116867A (en) * | 1973-03-09 | 1974-11-08 | ||
| JPS5758477U (en) * | 1980-09-19 | 1982-04-06 | ||
| JPS59184911U (en) * | 1983-05-30 | 1984-12-08 | 三菱重工業株式会社 | Line filter for flushing |
| JPS6178482A (en) * | 1984-09-27 | 1986-04-22 | ネポン株式会社 | Method for cleaning pipe |
| JPH0411980A (en) * | 1990-05-01 | 1992-01-16 | Ken Tanaka | Method for cleaning inside of pipe with different kinds of detergents |
-
1994
- 1994-05-31 JP JP06141088A patent/JP3134668B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49116867A (en) * | 1973-03-09 | 1974-11-08 | ||
| JPS5758477U (en) * | 1980-09-19 | 1982-04-06 | ||
| JPS59184911U (en) * | 1983-05-30 | 1984-12-08 | 三菱重工業株式会社 | Line filter for flushing |
| JPS6178482A (en) * | 1984-09-27 | 1986-04-22 | ネポン株式会社 | Method for cleaning pipe |
| JPH0411980A (en) * | 1990-05-01 | 1992-01-16 | Ken Tanaka | Method for cleaning inside of pipe with different kinds of detergents |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010264336A (en) * | 2009-05-12 | 2010-11-25 | Shirokatsu Ura | Method of washing drain pipe connected to disposer |
| CN109759406A (en) * | 2019-03-01 | 2019-05-17 | 广州检验检测认证集团有限公司 | A kind of Quick cleaning device and its working method for complicated porous absorbent bottle |
| KR102250595B1 (en) * | 2020-12-31 | 2021-05-11 | 최병선 | Pipe washing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3134668B2 (en) | 2001-02-13 |
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