JPS5918211B2 - 114/1. Corrosion prevention method for elbows - Google Patents
114/1. Corrosion prevention method for elbowsInfo
- Publication number
- JPS5918211B2 JPS5918211B2 JP5969676A JP5969676A JPS5918211B2 JP S5918211 B2 JPS5918211 B2 JP S5918211B2 JP 5969676 A JP5969676 A JP 5969676A JP 5969676 A JP5969676 A JP 5969676A JP S5918211 B2 JPS5918211 B2 JP S5918211B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- tube
- coated
- elbow
- adhesive
- 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
Links
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【発明の詳細な説明】 この発面は、１１１０エルボの防食方法に関する。[Detailed description of the invention] This disclosure relates to a corrosion protection method for 1110 elbows.
従来、塗覆装鋼管のＩＩＸ゜エルボの防食方法は、第１
図及び第２図で示すようにして行なつている。すなわち
、塗覆装鋼管１、１’の管端末被覆部３、３’とこれら
を連結する１１ェの角度でわん曲したエルボ２に２枚の
粘着剤付熱収縮性プラスチックチューブ４、５を被せ、
このチューブ４、５を加熱収縮させて防食する。しかし
、上記方法では作業環境の悪い敷設現場・ で複数の粘
着剤付熱収縮性プラスチックチューブ４、５を１個づつ
加熱収縮させる必要があるので、作業工数が多く作業性
も極めて悪い。Conventionally, the first corrosion prevention method for IIX° elbows of coated steel pipes was
This is done as shown in FIG. That is, two adhesive-coated heat-shrinkable plastic tubes 4, 5 are attached to the tube end coating portions 3, 3' of the coated steel tubes 1, 1' and the elbow 2, which is bent at an angle of 11, to connect them. Cover,
The tubes 4 and 5 are heat-shrinked to prevent corrosion. However, in the above method, it is necessary to heat-shrink the plurality of adhesive-coated heat-shrinkable plastic tubes 4 and 5 one by one at the installation site where the working environment is poor, which requires a large number of man-hours and has extremely poor workability.
また、エルボ２に粘着剤付熱収縮性プラスチックチュー
ブ４、５相互のラップ部６が生じ、そのラップ部６から
０ 水がエルボ２に侵入する恐れがある。この発明は、
上述のような観点からＩＩＴエルボを１枚の粘着剤付熱
収縮性プラスチックチューブで効率良く防食作業を行な
えるようにするとともに防食性能を向上させることを目
的としたもの５ で、前記粘着剤付熱収縮性プラスチッ
クチューブを、これを矩形に折り畳み、この両短辺をそ
のほぼ１のところから１１１０の約半分の角度をもつて
傾斜して切断し、両隅部を切欠いた形状のものとしたこ
とに特徴を有するものである。Furthermore, there is a possibility that a lapped portion 6 between the adhesive-coated heat-shrinkable plastic tubes 4 and 5 is formed in the elbow 2, and water may enter the elbow 2 from the lapped portion 6. This invention is
From the above-mentioned point of view, the purpose of this project is to make it possible to efficiently perform anti-corrosion work on IIT elbows using a single adhesive-coated heat-shrinkable plastic tube and to improve the anti-corrosion performance. A heat-shrinkable plastic tube was folded into a rectangular shape, and both short sides thereof were cut at an angle of about half 1110 from approximately 1 to create a shape with both corners cut out. It has particular characteristics.
’０ この発明を実施例により図面とともに説明する。'0 This invention will be explained by way of examples and with drawings.
第３図及び第４図は、この発明の実施例の防食方法を示
す正面図である。図示されるように、この発明の防食方
法は、塗覆装鋼管１、１’の管端未１・被覆部３、３’
とこれらを連結する１１−ｊエルボ２ｊ５に、前記鋼管
１、１’の被覆とラップするように、図示されるような
形状の１枚の粘着剤付熱収縮性プラスチックチューブ７
を被せ、後に前記チューブ７を加熱収縮させるものであ
る。FIGS. 3 and 4 are front views showing a corrosion prevention method according to an embodiment of the present invention. As shown in the figure, the corrosion prevention method of the present invention includes the pipe ends 1 and coated portions 3 and 3' of coated and coated steel pipes 1 and 1'.
and 11-j elbow 2j5 that connects these, a piece of adhesive-coated heat-shrinkable plastic tube 7 having a shape as shown in the figure so as to wrap with the covering of the steel pipes 1 and 1'.
The tube 7 is then heat-shrinked.
この状態が第４図に示されている。■０ 前記粘着剤付
熱収縮性プラスチックチューブ７は、これを矩形に折り
畳み、この折り畳んだ矩形のチューブの両短辺をそのほ
ぼ一のところから１１１０の約半分の角度（θ）をもつ
て傾斜して切断し、両隅部を切欠いだ形状をしていて、
その一方の長Ｊ５辺（図中上部）の長さは、エルボ２の
外側の長さと、塗覆装鋼管１、１’の管端未被覆部３、
３’の長さと、前記鋼管１、１’の被覆部とのラップ代
及び熱収縮代とを合わせた長さになつている。This state is shown in FIG. (1) The heat-shrinkable plastic tube 7 with adhesive is folded into a rectangular shape, and both short sides of the folded rectangular tube are inclined at an angle (θ) of about half of 1110 from approximately one point. It has a shape with both corners cut out.
The length of one long side J5 (upper part in the figure) is the outer length of the elbow 2, the uncoated pipe end portion 3 of the coated steel pipe 1, 1',
The length is the sum of the length of 3' and the wrap allowance and heat shrinkage allowance for the covered portions of the steel pipes 1 and 1'.
なお、粘着剤付熱収縮性ププスチツクチユーブ７の両隅
部を上記のように切欠いだのは、加熱収縮後塗覆装鋼管
１，１′の被覆とのラツプ部を均一にするためである。The reason why both corners of the adhesive-coated heat-shrinkable plastic tube 7 are cut out as described above is to make the overlap with the coating of the coated steel pipes 1 and 1' uniform after heat-shrinking. It is.
以上説明したようにこの発明によれば従来の複数の粘着
剤付熱収縮性チユーブを用いた防食法の作業性、防食性
及び経済性の問題が解決できる。As explained above, according to the present invention, the problems of workability, corrosion resistance, and economy of the conventional anticorrosion method using a plurality of adhesive-coated heat-shrinkable tubes can be solved.
すなわち、１枚の粘着剤付熱収縮性プラスチツクチユー
ブを用いることにより、加熱収縮作業が１回で済み、作
業工程が半分以下に減少する。また、前記チユーブ相互
のラツプ部がなくなることにより、ラツプ部からの水の
侵入等の心配がなくなり、防食性能も向上する。さらに
、ラツプ部のむだがなくなりチユーブのコストも減少し
経済性が向上するなど産業上有用な効果かもたらされる
。That is, by using one adhesive-coated heat-shrinkable plastic tube, only one heat-shrinking operation is required, reducing the number of work steps by more than half. Furthermore, since there is no lap between the tubes, there is no need to worry about water entering from the lap, and the anti-corrosion performance is improved. Furthermore, there are industrially useful effects such as the elimination of waste in the lap portion, the cost reduction of the tube, and improved economic efficiency.
第１図及び第２図は、従来の１１−エルボの防ゝ
４食方法を示す正面図、第３図及び第４図は、この
発明の実施例の防食方法を示す正面図である。Figures 1 and 2 show the conventional 11-elbow protection.
FIGS. 3 and 4 are front views showing the four-meal method, and FIGS. 3 and 4 are front views showing the corrosion prevention method according to the embodiment of the present invention.
Claims (1)
ボに、前記鋼管の被覆とラップするように１枚の粘着剤
付熱収縮性プラスチックチューブを覆せ、該チューブを
加熱収縮させるとともに、前記チューブは、これを矩形
に折り畳み、この折り畳んだ矩形のチューブの両短辺を
そのほぼ１／３のところから１１（１／４）°の約半分
の角度をもつて傾斜して切断し、両隅部を切欠いだ形状
のものとしたことを特徴とする１１（１／４）°エルボ
の防食方法。1. Cover the uncoated end of the coated steel pipe and the 11 (1/4)° elbow with a heat-shrinkable plastic tube coated with adhesive so as to wrap it with the coating of the steel pipe, and heat-shrink the tube. At the same time, the tube is folded into a rectangular shape, and both short sides of the folded rectangular tube are inclined at an angle of approximately half of 11 (1/4) degrees from approximately 1/3 of the length. A method for preventing corrosion of an 11 (1/4) degree elbow, characterized by cutting the elbow into a shape with notches at both corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5969676A JPS5918211B2 (en) | 1976-05-25 | 1976-05-25 | 114/1. Corrosion prevention method for elbows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5969676A JPS5918211B2 (en) | 1976-05-25 | 1976-05-25 | 114/1. Corrosion prevention method for elbows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52142778A JPS52142778A (en) | 1977-11-28 |
| JPS5918211B2 true JPS5918211B2 (en) | 1984-04-26 |
Family
ID=13120620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5969676A Expired JPS5918211B2 (en) | 1976-05-25 | 1976-05-25 | 114/1. Corrosion prevention method for elbows |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5918211B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426122U (en) * | 1977-07-26 | 1979-02-20 |
-
1976
- 1976-05-25 JP JP5969676A patent/JPS5918211B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52142778A (en) | 1977-11-28 |
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