JPS5825196B2 - Corrosion prevention method for transport pipes with T-type connecting pipes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing corrosion of a transport pipe with a T-shaped connecting pipe, which ensures reliable connection and corrosion protection between T-shaped connecting pipes and connecting pipes by a simple construction method.

To explain with reference to the drawings, the three-sided opening 2 of the T-shaped connecting pipe 1,
Connect connecting pipes 3 and 3.3 to 2 and 2, and apply a paste-like anti-corrosion primer 4 containing more petrolatum and less inert silica to the upper surface, and then connect with T-shaped connecting pipe 1. tube 3
, 3.3 is coated with a filling anti-corrosion 6, 6.6 which contains more inert silica than the anti-corrosion primer 4 and has stronger clay properties, on the upper surface of the joining step 5, 5.5 with the anti-corrosion primer 4, Furthermore, several sewing threads 1 made of strong synthetic fibers such as nylon are attached in the longitudinal direction of the non-woven fabric tape 15 made of strong synthetic fibers such as nylon.
6 is sewn to form a tape cloth 17, and the main component is petrolatum, inert silica for viscosity adjustment is mixed into the petrolatum, and a small amount of tannin and a rust inhibitor are further mixed and stirred. The formed clay-like adhesive 18 is permeated to form a permeable layer 19, and an anticorrosion tape 7 formed by providing adhesive layers 20 on both ends of the permeable layer 190 and on the front and back surfaces is applied to the rear surface of the T-shaped connecting pipe 1. A first coating layer 11 is formed by winding the first coating layer 11 from 8 to the rear surface portion 8 via one corner portion 9 and further to the rear surface portion 8 via the other corner portion 10, and then the anti-corrosion tape 7
A second coating layer 13 is formed by pasting the centrally protruding tube 12 of the T-shaped connecting tube 1 from the back surface to the rear surface 8, and then a part of the first coating layer 11 and the second coating layer 13 is pasted. At the same time, the anti-corrosion tape 7 is wrapped around the respective connecting pipes 3, 3.3 from the T-shaped connecting pipe 1 while being strongly pulled to form the third coating layer 1.
This relates to a method for preventing corrosion of a transport pipe with a T-shaped connecting pipe, which is characterized in that the entire surface of the transport pipe is smoothed.

Note that before applying the anticorrosion primer 4, the surface is polished with a wire brush and moisture is wiped off.

The width of the anti-corrosion tape 7 is determined depending on the area to be pasted, and according to experiments, the tape cloth 17 is about 8%, petrolatum is about 60%, inert silica is about 30%, tannin, carbon dioxide, etc. It is suitable for use that contains a rust inhibitor in a small volume ratio.

This invention has the above-described structure, and includes anticorrosion tape, 7
A tape cloth 17 is formed by sewing several threads 16 made of a strong synthetic fiber such as nylon in the longitudinal direction of a non-woven fabric tape 15 made of a strong synthetic fiber such as nylon, and a tape cloth 17 made of mainly petrolatum. Inert silica for viscosity adjustment is mixed into the petrolatum, and a small amount of tannin and a rust inhibitor are mixed in and stirred to form a clay-like adhesive 18, which is then infiltrated to form a permeable layer 19. In addition, since the adhesive layer 20 is formed on both ends of the permeable layer 190 as well as on the front and back surfaces, the adhesive layer 20 has petrolatum as its main component, so it does not evaporate or harden semi-permanently and always maintains its viscosity to form an anti-corrosion layer. is formed semi-permanently to prevent the harmful effects of surface corrosion, and because it contains a rust inhibitor, it changes red rust to black rust and suppresses the progress of rust.

In addition, by incorporating inert silica, the adhesive has a clay-like viscosity that does not change, and it always maintains a viscous adhesion to the surface and will not peel off from the surface due to vibrations, shocks, etc. It does not allow moisture or air to enter into the gaps, and it maintains its viscosity semi-permanently and can adhere tightly.

In addition, by mixing a small amount of tannin, the adhesive 18 forms a hard, dense film of iron tannate on the metal surface, and this film prevents the progress of rust, and in combination with the anticorrosive effect of petrolatum, has the effect of inhibiting the progress of rust. The adhesive layer lasts semi-permanently, and the adhesive layer has acid, alkali, and salt resistance, as well as excellent chemical resistance.
Connecting pipes 3, 3.3 are connected to the three-way openings 2, 2.2 of the 3-sided openings 2, 2.2, and a glue-like barrier with a thinner viscosity and easier application is created by increasing the amount of petrolatum on the top surface and reducing the amount of inert silica used as a hardening agent. An edible primer 4 is applied, and then more inert silica than the anticorrosion primer 4 is applied to the upper surface of the joint step 5, 5.5 between the T-shaped connecting pipe 1 and the connecting pipes 3, 3, 3. Filled with corrosion-resistant corrosion 6, 6.6, which has a strong clay consistency, is applied, and an anti-corrosion tape 7 is applied from the rear part 8 of the T-shaped connecting pipe 1 through one corner part 9 to the rear part 8, and then to the other part. A first coating layer 11 is formed by wrapping it around the rear surface part 8 through the corner part 10, and then an anti-corrosion tape 7 is applied from the back surface of the central protruding pipe 12 of the T-shaped connecting pipe 1 through the rear surface part 8. forming a second coating layer 13 adhered over the
Next, the anti-corrosion tape 7 is polymerized with a part of the first coating layer 11 and the second coating layer 13, and is wrapped around each of the connecting tubes 3, 3.3 from the T-shaped connecting tube 1 while strongly pulling it. Covering layer 1
4゜14.14 is formed and the entire surface is smoothed from the state shown in Fig. 3 as shown in Fig. 4 to ensure coverage of the transport pipe with T-type connecting pipe. This ensures the connection with the pipe and the anti-corrosion coating, thereby promoting the anti-corrosion effect.

Furthermore, it is extremely economical as it provides corrosion protection over a long period of time, and it is also a simple construction method that provides good workability and reduces labor costs.

[Brief explanation of drawings]

Figures 1, 2, 3, and 4 are explanatory drawings showing the process, Figure 5 is a partially cutaway side view of the finished product, and Figure 6 is a partially cutaway front view of the anticorrosive tape. FIG. 7 is a sectional view of the anticorrosion tape. 1... T-shaped connecting pipe, 2... Three-way opening, 3... Connecting pipe, 4... Anti-corrosion primer, 5... ...Joining step part, 6...Filling anti-corrosion, 7...Anti-corrosion tape, 8...Rear surface part, 9...One corner part, 10...Other corner portion, 11...First coating layer, 12...
Central protruding tube, 13... Second coating layer, 14...
...Third coating layer, 15...Nonwoven tape, 1
6... Sewing thread, 17... Tape cloth, 18
...adhesive, 19...penetration layer, 20.
...adhesive layer.

Claims (1)

[Claims] 1 Connecting pipe 3 to the three-way opening 2, 2, 2 of T-shaped connecting pipe 1,
Connect 3 and 3 and add more petrolatum on the top surface,
A paste-like anti-corrosion primer 4 with a reduced amount of inert silica is applied, and then the anti-corrosion primer is applied to the upper surface of the joint step 5, 5, 5 between the T-shaped connecting pipe 1 and the connecting pipes 3, 3.3. Filled anti-corrosive material 6, 6. which has more inert silica than primer 4 and has stronger clay properties.
6 is applied, and several sewing threads 16 made of strong synthetic fibers such as nylon are sewn in the longitudinal direction of the non-woven fabric tape 15 made of strong synthetic fibers such as nylon to form tape cloth 17. And a clay-like adhesive 18 formed by mixing petrolatum as a main component, mixing inert silica for viscosity adjustment with the petrolatum, and further mixing and stirring a small amount of tannin and a rust inhibitor is penetrated. At the same time, adhesive layers 20 are formed on both ends of the permeable layer 190 and on the front and back surfaces.
The anticorrosion tape 7 formed by providing the T-shaped connecting pipe 1 is wrapped around the rear surface 8 of the T-shaped connecting pipe 1 through one corner 9 to the rear surface 8, and further through the other corner 10 to the rear surface 8. 1 coating layer 11
Then, a second coating layer 13 is formed by pasting the anticorrosion tape 7 from the back surface of the central protruding tube 12 of the T-shaped connecting tube 1 to the rear surface 8, and then the first coating layer 13 is formed. The anti-corrosion tape 7 is polymerized with a part of the layer 11 and the second coating layer 13, and is wrapped around each of the connecting tubes 3, 3.3 from the T-shaped connecting tube 1 while being strongly pulled to form the third coating layer 14, 14. A method for preventing corrosion of a transport pipe with a T-shaped connecting pipe, characterized in that the entire surface is smoothed.