JPH02298388A - Method for painting branched pipeline - Google Patents
Method for painting branched pipelineInfo
- Publication number
- JPH02298388A JPH02298388A JP11566789A JP11566789A JPH02298388A JP H02298388 A JPH02298388 A JP H02298388A JP 11566789 A JP11566789 A JP 11566789A JP 11566789 A JP11566789 A JP 11566789A JP H02298388 A JPH02298388 A JP H02298388A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- painting
- main pipe
- branch
- branch pipe
- 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
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010422 painting Methods 0.000 title claims abstract description 27
- 239000003973 paint Substances 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
〈産業上の利用分野〉
本発明は管の更生工事等に於いて分岐管路の内面を塗装
するための方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] <Industrial Application Field> The present invention relates to a method for painting the inner surface of a branch pipe in pipe rehabilitation work and the like.
〈従来の技術〉
管の更生工法として、管の内面をサンドブラスト等によ
り研磨した倶に、エポキシ系樹脂等によりその内面を塗
装することにより、例えば水道管等として用いられるこ
のような管を更生する技術が知られている。しかるに、
実際の水道管は、主管及びそれから分岐する多数の枝管
とからなり、その内部に塗料を均一に到達させることが
困難であった。例えば、特公昭６２−８２３３号に記載
されているように、塗料を塗装されるべき管内に一時に
投入する方法に於いては、塗料が枝管側に向けて過剰に
流入しがちであることから、各枝管の末端に於いて、塗
料の流出が見られ、同枝管の塗装が完了したと判断され
る時点から、同枝管の末端から空気を吹き込むことによ
り塗料を主管に戻すことにより、塗料が枝管側に片寄る
のを防止する技術が提案されている。しかしながら、こ
の工法によれば、最初に投入された塗料が、各枝管に導
入され再び主管に戻されるという運動を反復して行なっ
た後に始めて主管の下流端に到達するため、その間に塗
料の硬化が進行し、主管の下流端の塗装が不十分となっ
たり、逆に主管の下流端の塗膜厚さが過大になる等の問
題を生じ得る。<Prior art> As a pipe rehabilitation method, the inner surface of the pipe is polished by sandblasting etc., and then the inner surface is painted with epoxy resin etc. to rehabilitate such pipes, which are used for example as water pipes. The technology is known. However,
Actual water pipes consist of a main pipe and a large number of branch pipes branching from the main pipe, and it has been difficult to uniformly apply paint to the inside of the pipe. For example, as described in Japanese Patent Publication No. 62-8233, in a method in which paint is poured into a pipe to be painted all at once, paint tends to flow excessively toward the branch pipe side. From the point at which paint is seen flowing out at the end of each branch pipe, and it is determined that the painting of the branch pipe is complete, the paint is returned to the main pipe by blowing air from the end of the branch pipe. Accordingly, a technique has been proposed to prevent paint from being biased towards the branch pipe side. However, according to this construction method, the paint initially introduced into each branch pipe and returned to the main pipe is repeated until it reaches the downstream end of the main pipe. As the curing progresses, problems may occur, such as insufficient coating at the downstream end of the main pipe or, conversely, an excessive coating thickness at the downstream end of the main pipe.
特開昭６０−７９７４号公報には、第２発明として、レ
ジユース管からなる主管と、それから分岐した多数の枝
管を有する管の塗装方法が開示されているが、この方法
によれば、塗料をレジユース管の中間部から導入し、各
枝管あるいは主管の各異径部分を順次塗装するに際して
、不足がちとなる空気を主管の小径端側から導入するよ
うにしている。この方法によれば、一般に最も長い主管
の中間部から塗料を導入するため、塗料の移動距離が小
さくなるという利点が得られるものの、分岐管の異径部
分おるいは各枝管を塗装するのに必要ａ ｍ Ｍ’；ｌ
の爪を各時点に於いて正確に供給する必要があり、その
作業性に難がある。JP-A-60-7974 discloses, as a second invention, a method for painting a pipe having a main pipe made of a reuse pipe and a large number of branch pipes branching from the main pipe. Air is introduced from the middle of the reuse pipe, and air, which tends to be insufficient when sequentially painting each branch pipe or each different diameter portion of the main pipe, is introduced from the small diameter end of the main pipe. According to this method, the paint is generally introduced from the middle of the longest main pipe, which has the advantage of reducing the distance the paint travels, but it is difficult to paint the different diameter parts of the branch pipe or each branch pipe. necessary for a m M';l
It is necessary to accurately feed the nails at each point, which poses a problem in workability.
〈発明が解決しようとする課題〉
このような従来技術の問題点に鑑み、本発明の主な目的
は、容易に実施可能であって、しかも高品質の塗装結果
が得られる分岐管路の塗装方法を提供することにある。<Problems to be Solved by the Invention> In view of the problems of the prior art, the main purpose of the present invention is to provide a coating method for branch pipes that is easy to implement and can provide high-quality coating results. The purpose is to provide a method.
［発明の構成］
く課題を解決するための手段〉
このような課題は、本発明ににれば、主管及び該主管か
ら分岐する複数の枝管からなる管路の内面を硬化性樹脂
を含む気液混合体により塗装するための方法であって、
前記枝管の末端を閉鎖し、前記主管をその一端から他端
に向けて塗装する過程と、前記主管の前記他端を閉鎖し
、かつ最も前記１１！！端側に位置する枝管を開放し、
前記主管の一端から前記枝管の末端に向けて塗装する過
程と、最も前記他端側の前記枝管の末端を閉鎖し、それ
よりも前記一端側に位置する枝管の末端に向けて前記主
管の前記一端から塗装する過程と、前記過程を繰り返し
、全ての枝管の塗装が終了した後に、前記主管の前記一
端及び前記各枝管の末端から前記主管の他端に向けて空
気を送給する過程とを有することを特徴とする管路の塗
装方法を提供することにより達成される。[Structure of the Invention] Means for Solving the Problems According to the present invention, such problems can be solved by using a method in which the inner surface of a pipe line consisting of a main pipe and a plurality of branch pipes branching from the main pipe contains a curable resin. A method for coating with a gas-liquid mixture, the method comprising:
closing the end of the branch pipe and painting the main pipe from one end to the other; closing the other end of the main pipe; ! Open the branch pipe located on the end side,
A process of painting from one end of the main pipe to an end of the branch pipe, and a process of closing the end of the branch pipe closest to the other end, and applying the paint to the end of the branch pipe located closer to the one end than that. The process of painting from the one end of the main pipe and the process described above are repeated, and after all the branch pipes have been painted, air is sent from the one end of the main pipe and the end of each branch pipe to the other end of the main pipe. This is achieved by providing a method for painting a pipe, which comprises the steps of:
〈作用〉
このように、本発明によれば、管路仝体を塗装するのに
必要と考えられる量の塗料を、ある時間をかけて管路内
に供給するのみで、塗料が管路仝体に向けてくまなく供
給され、しかも最終的な空気送給過程を備えていること
により、塗料溜りの形成等も解消でき、簡単にしかも高
品質な塗装が可能となる。<Operation> As described above, according to the present invention, the amount of paint considered necessary for painting the pipe body is simply supplied into the pipe line over a certain period of time, and the paint is applied to the pipe line body. By supplying air all over the body and having a final air supply process, it is possible to eliminate the formation of paint pools, and it is possible to easily and high-quality paint.
〈実施例〉
以下に添付の図面を参照して本発明を特定の実施例につ
いて詳細に説明する。Embodiments The present invention will now be described in detail with reference to specific embodiments with reference to the accompanying drawings.
第１図〜第５図は、本発明に基づく管内の塗装方法を示
すもので、その対象となる管路は、小径部２、中径部３
、大径部４からなる主管１と、これら各部分から分岐す
る枝管５．６．７とからなる。一般に、例えば中・高層
住宅に於いては、主管１が上下に延設され、各階毎に枝
管が主管から分岐している。この場合、塗料は、２液性
のエポキシ樹脂からなるもので、例えば同一出願人によ
る特願昭６２−０２３５４１Ｎ明細書に開示されている
ような定量ポンプを備える樹脂混合装置８から供給され
る硬化性樹脂を、例えば同一出願人による実願昭６２−
０６９８７０号に記載されているような装置を用いて微
粒化した状態で圧縮空気とともに管路内に導入する。Figures 1 to 5 show the method for painting inside a pipe according to the present invention, and the target pipes are a small diameter part 2, a medium diameter part 3
, a main pipe 1 consisting of a large diameter part 4, and branch pipes 5.6.7 branching from each of these parts. Generally, for example, in medium- and high-rise residential buildings, a main pipe 1 is installed vertically, and a branch pipe branches off from the main pipe for each floor. In this case, the paint is made of a two-component epoxy resin, and is cured by being supplied from a resin mixing device 8 equipped with a metering pump, such as the one disclosed in Japanese Patent Application No. 62-023541N filed by the same applicant. For example, in a patent application filed in 1982 by the same applicant,
Using a device such as that described in No. 069870, it is atomized and introduced into the pipeline together with compressed air.
管内の塗装を行なうに際して、先ず各枝管の末端をプラ
グ１５．１６．１７により閉塞した状態で、主管１の各
異径部分を、小径部２から大径部４に向けて塗装する。When painting the inside of the pipe, first, with the ends of each branch pipe closed with plugs 15, 16, and 17, the different diameter portions of the main pipe 1 are painted from the small diameter portion 2 to the large diameter portion 4.
この際、小径部２の側の管路に於いては、管内流速が高
いことから、同部分に於ける塗膜厚さは比較的小さく、
逆に大径部４に於ける塗膜厚さは比較的大きくなる。At this time, since the flow velocity inside the pipe is high in the pipe on the side of the small diameter part 2, the coating film thickness in this part is relatively small.
On the contrary, the coating film thickness in the large diameter portion 4 is relatively large.
大径部４の末端から塗料が流出するのが確認されれば、
主管１の塗装が概ね完了したものと判断され、第２図に
示すように、大径部４の末端をプラグ１４により閉塞し
、大径部４の側の枝管７のプラグ１７を取り外して塗装
を再開する。このようにして、枝管７の末端から塗料の
流出が確認されると、枝管７の塗装が完了する。If it is confirmed that the paint flows out from the end of the large diameter part 4,
It is judged that the painting of the main pipe 1 is almost completed, and as shown in FIG. Resume painting. In this way, when it is confirmed that the paint has flowed out from the end of the branch pipe 7, the painting of the branch pipe 7 is completed.
続いて、第３図に示すように、枝管７の末端をプラグ１
７により再び閉塞するとともに、枝管６の末端のプラグ
１６を取り外し、枝管６の塗装を同様にして行なう。更
に第４図に示されたように前記と同様にして枝管５の塗
装を行なう。Next, as shown in FIG. 3, plug the end of the branch pipe 7 into the plug 1.
7, the plug 16 at the end of the branch pipe 6 is removed, and the branch pipe 6 is painted in the same manner. Furthermore, as shown in FIG. 4, the branch pipe 5 is painted in the same manner as described above.
この際、小径部２に対しては塗装が繰返し行われるため
、第１図に示されて過程に於いて小径部２に於ける塗膜
厚さが小さかった点を補償することとなり、結果的に、
全体として均一な塗装が行われる。また、導入される空
気量は、各過程に於いて空気が流通するべき管路の最大
径部分に応じて定めると良く、本実施例の場合に於いて
も、第１図〜第４図の各過程に於ける空気の流量を順次
低減させると良い。At this time, since the coating is repeated on the small diameter part 2, it is necessary to compensate for the fact that the coating film thickness on the small diameter part 2 was small during the process shown in Figure 1, and as a result, To,
The coating is uniform throughout. In addition, the amount of air to be introduced should be determined according to the maximum diameter portion of the pipe through which air should flow in each process, and in the case of this example as well, the amount of air introduced in Figs. It is preferable to sequentially reduce the air flow rate in each process.
最後に、第５図に示されたように、プラグ１４〜１７を
全て取り外し、主管１の小径ｑ（及び各枝管５〜７の末
端から適宜な風速をもって乾燥用空気を導入し、塗料溜
り等を除去するとともに、樹脂の硬化を促進する。Finally, as shown in Fig. 5, all the plugs 14 to 17 are removed, and drying air is introduced at an appropriate speed from the small diameter q of the main pipe 1 (and from the ends of each branch pipe 5 to 7) to remove the paint stagnation. etc., and accelerates the curing of the resin.
このように本発明によれば、各部分の末端からの塗料の
流出を確認することにより各部分の塗装の完了を判断す
ることができるため、塗装不足を回避することができ、
しかも塗料の管内に於ける滞溜時間が短いため、塗料の
硬化が進行する前に所要の塗装が完了することから、塗
膜厚さが過大となったり、過小となることがなく、更に
最終的に微風乾燥により塗膜厚の均一化が好適に達成さ
れる。As described above, according to the present invention, it is possible to judge whether the painting of each part is completed by checking the outflow of paint from the end of each part, and therefore it is possible to avoid insufficient painting.
Moreover, since the residence time of the paint in the tube is short, the required coating is completed before the paint hardens, so the coating thickness will not be too large or too small, and the final Uniform coating film thickness is preferably achieved by drying with gentle air.
［発明の効果］
本発明によれば、比較的単純な手順をもって管の内面を
均一に塗装することができ、その効果は極めて大である
。[Effects of the Invention] According to the present invention, the inner surface of the pipe can be uniformly coated using a relatively simple procedure, and the effect is extremely large.
第１図〜第５図は本発明に基づく塗装方法の手順を示す
ための各塗装過程を示す配管図である。
１・・・主管 ２・・・小径部３・・・中径
部 ４・・・大径部５〜７・・・枝管
８・・・混合装置１４〜１７・・・プラグ
特許出願人 株式会社 ニーアール設備代 理
人 弁理士 大 島 陽 −第５図1 to 5 are piping diagrams showing each painting process to show the procedure of the painting method based on the present invention. 1... Main pipe 2... Small diameter section 3... Medium diameter section 4... Large diameter section 5-7... Branch pipe
8...Mixing device 14-17...Plug patent applicant NIR Equipment Co., Ltd. Agent
Person Patent Attorney Yo Oshima - Figure 5
Claims (2)
管路の内面を硬化性樹脂を含む気液混合体により塗装す
るための方法であって、 前記枝管の末端を閉鎖し、前記主管をその一端から他端
に向けて塗装する過程と、 前記主管の前記他端を閉鎖し、かつ最も前記他端側に位
置する枝管を開放し、前記主管の一端から前記枝管の末
端に向けて塗装する過程と、最も前記他端側の前記枝管
の末端を閉鎖し、それよりも前記一端側に位置する枝管
の末端に向けて前記主管の前記一端から塗装する過程と
、前記過程を繰り返し、全ての枝管の塗装が終了した後
に、前記主管の前記一端及び前記各枝管の末端から前記
主管の他端に向けて空気を送給する過程とを有すること
を特徴とする管路の塗装方法。(1) A method for coating the inner surface of a pipeline consisting of a main pipe and a plurality of branch pipes branching from the main pipe with a gas-liquid mixture containing a curable resin, the method comprising: closing the end of the branch pipe; a process of painting the main pipe from one end to the other end; closing the other end of the main pipe and opening the branch pipe located closest to the other end; starting from one end of the main pipe to the end of the branch pipe; a step of closing the end of the branch pipe closest to the other end, and painting from the one end of the main pipe toward the end of the branch pipe located closer to the one end; The method further comprises a step of repeating the above process and, after finishing painting all the branch pipes, supplying air from the one end of the main pipe and the end of each of the branch pipes to the other end of the main pipe. How to paint pipes.
ることを特徴とする特許請求の範囲第１項に記載の管路
の塗装方法。(2) The method for painting a pipe line according to claim 1, characterized in that the amount of air fed is sequentially reduced in each of the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11566789A JPH02298388A (en) | 1989-05-09 | 1989-05-09 | Method for painting branched pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11566789A JPH02298388A (en) | 1989-05-09 | 1989-05-09 | Method for painting branched pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02298388A true JPH02298388A (en) | 1990-12-10 |
Family
ID=14668319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11566789A Pending JPH02298388A (en) | 1989-05-09 | 1989-05-09 | Method for painting branched pipeline |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02298388A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001241593A (en) * | 2000-03-01 | 2001-09-07 | Nihon Setsubi Kogyo Co Ltd | Rehabilitation method for miscellaneous drainage piping in apartment house |
| JP7100340B1 (en) * | 2022-03-17 | 2022-07-13 | 株式会社タイコー | How to paint inside the sovent joint |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813227A (en) * | 1981-07-14 | 1983-01-25 | Bando Chem Ind Ltd | Oilless bearing |
| JPS607974A (en) * | 1983-06-28 | 1985-01-16 | Nippon Plant Service Center:Kk | Method for lining inside wall of reducing piping |
| JPS6021792A (en) * | 1983-07-19 | 1985-02-04 | グンゼ株式会社 | Fabric stitching apparatus |
-
1989
- 1989-05-09 JP JP11566789A patent/JPH02298388A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813227A (en) * | 1981-07-14 | 1983-01-25 | Bando Chem Ind Ltd | Oilless bearing |
| JPS607974A (en) * | 1983-06-28 | 1985-01-16 | Nippon Plant Service Center:Kk | Method for lining inside wall of reducing piping |
| JPS6021792A (en) * | 1983-07-19 | 1985-02-04 | グンゼ株式会社 | Fabric stitching apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001241593A (en) * | 2000-03-01 | 2001-09-07 | Nihon Setsubi Kogyo Co Ltd | Rehabilitation method for miscellaneous drainage piping in apartment house |
| JP7100340B1 (en) * | 2022-03-17 | 2022-07-13 | 株式会社タイコー | How to paint inside the sovent joint |
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