JPS6129723Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention consists of a container coated with enamel,
For example, it relates to a sleeve device for repairing a nozzle part of a tank.

Containers coated with enamel are widely used in various chemical industries to treat various liquids due to their excellent corrosion resistance and heat resistance. Compared to other inner surfaces of the container, the nozzle section, which is provided to take out liquid from inside the container, is subject to corrosion earlier than other parts due to its harsh usage conditions. is well known.

That is, for example, as shown in FIGS. 1 and 2 of the accompanying drawings, a tank 2 with an enamel coating 1 is provided.
etc., the nozzle portion 3 is subject to corrosion during its effective use period due to mechanical, thermal shock or leakage of liquid gas, etc., as indicated by numerals 4, 5 and 6 in the figure. However, once this corrosion occurs, it becomes impossible to continue using it in that state. Conventionally, repair in such cases has been carried out by applying acid-resistant cement or resin to these areas, but no significant extension of the service life could be expected.

The present applicant aims to eliminate these drawbacks of conventional repair methods and provide a repair device that can be easily repaired with a simple device, has reliable operation after repair, and has a long service life. For this purpose, we have already proposed a ``sleeve device for repairing the nozzle part coated with enamel'' in Utility Application No. 51-145778 (publication of Utility Model Publication No. 55-4289). We provide a sleeve device suitable for repairing parts. However, previously provided devices, such as 5 or 6 shown in FIGS.
This is not applicable to repairing a corroded location at the base of the nozzle portion 3.

Therefore, the main purpose of the present invention is to provide a sleeve device suitable for repairing corrosion points that occur on the surface of containers coated with enamel, such as tanks, especially near the base of the nozzle. It is something to do.

In order to achieve this objective, the present invention inserts a sleeve body having a flange at the lower end from outside the tank into the nozzle part, and the lower end surface of the nozzle part,
A packing is interposed between the upper surface of the flange of the sleeve body, and the sleeve body is firmly attached to the tank using the flange formed at the lower end of the nozzle part. Insert a square packing between the inner surface of the nozzle part, or fill it with acid-resistant cement, etc. without fitting it, and tighten the upper surface of the seal plate to the sleeve body to firmly press the nut. It is characterized by:

Hereinafter, the present invention will be explained based on FIGS. 3 to 11 of the accompanying drawings showing embodiments thereof.

First, as shown in FIG. 3, the nozzle part 3 of the tank 2 is coated with the enamel coating 1 shown in FIG.
A sleeve body 12 is made up of a cylindrical member 10 having an outer diameter smaller than the inner diameter and slightly longer than the length of the nozzle part 3, and a flange 11 integrally formed at the lower end of the cylindrical member 10.
is prepared, and the cylindrical member 10 of this sleeve body 12 is
A male thread 13 is provided on the outer periphery of the upper portion of the housing.
Separately, a tightening nut 16 (FIG. 4) has a female thread 15 on its inner surface that engages with this male thread 13 and has an outer diameter slightly smaller than the inner diameter of the nozzle portion 3, and similarly engages with the male thread 13 of the sleeve body 12. A tightening nut 18 (fifth
), the upper end surface of the nut 16 has four round holes 20 equally spaced apart for rotating it, and the outer peripheral surface of the nut 18 has round holes 20 for rotating it. Several notches for 2
1 are provided at equal intervals. Furthermore, as shown in FIG.
As shown in FIG. 7, a seal plate 23 having an outer diameter larger than the inner diameter of the seal plate 23 and a spacer 25 having an inner diameter 24 of similar dimensions and a slightly smaller outer diameter are prepared.

The present invention thus includes the sleeve body 12,
The main components are two tightening nuts 16 and 18, a seal plate 23 and a spacer 25, and these parts are used to repair a corroded part of the nozzle part of a tank coated with enamel. The method is explained as follows.

First, as shown in FIG. 1, if the corrosion points of the nozzle part 3 are 4, 5 and 6, then
As shown in the figure, first, the nozzle part 3 to be repaired
Acid-resistant cement 30, 3 on corrosion points 4, 5 and 6
1 and 32, insert the sleeve main body 12 from the outside of the nozzle part 3 with the gasket 40 placed on the upper surface of the flange 11, and then interpose another gasket 41 on the lower surface of the flange 11. In addition, a suitable mounting flange 43 having an opening 42 in the center is applied from below, and this is placed in advance on the upper surface of the flange 3' formed integrally with the lower end of the nozzle part 3. The flange 11 of the lower end of the sleeve body 12 is tightened via several bolts 45 to the appropriate mounting flange 44 of the sleeve body 12
are firmly fastened to the flange 3' of the nozzle part 3 via the mounting flanges 43, 44, and are kept liquid-tight by the gaskets 40, 41 interposed between them.

In this way, the cylindrical member 1 of the sleeve body 12 fixed to the flange 3' of the nozzle part 3 of the tank 2
0 and the inner circumferential surface of the nozzle part 3 from the inside of the tank 1. 13, insert the tip of the tightening jig 50 into the hole 20 drilled on the upper surface of the tightening nut 16, and rotate the tightening nut 16 through the jig 50 to attach the square punching fitting 33. Tighten firmly, square punching packing 33
is tensioned between the inner circumferential surface of the nozzle portion 3 and the outer circumferential surface of the cylindrical member 10 of the sleeve body 12.
Thereafter, as shown in FIG.
acid-resistant cement 31 applied to the upper surface and its outer peripheral surface, the base of the nozzle part 3, and the corroded areas 5 and 6;
Acid-resistant cement 34 is filled to cover the outer surface of the sleeve body 12, and then, as shown in FIG.
3 and place the spacer 25 thereon, screw the tightening nut 18 into the external thread 13 of the cylindrical member 10 of the sleeve body 12 using the notch groove 21 provided on its outer circumferential surface, and apply the acid-resistant cement 47. is firmly pressed through the seal plate 23, and in this way, the corroded areas 4, 5 and 6 are
Complete the repairs.

Next, as a modified embodiment of the present invention, as shown in FIG. 2, an embodiment suitable for application when the only corroded parts of the nozzle part 3 of the tank 2 are the parts indicated by 5 and 6. will be explained with reference to FIG.

In the case of this embodiment, unlike the previous embodiment, the use of the corner packing 33 and the tightening nut 16 is omitted, and as shown in FIG.
After applying the acid-resistant cement 31 and 32 to the sleeve body 12 and the nozzle part 3, the acid-resistant cement 34 is filled between the sleeve body 12 and the nozzle part 3, and the seal plate 23 and spacer 25 are sequentially placed on the upper surface thereof and tightened. Screw in the nut 18 using the notch 21 provided around it, and then screw in the acid-resistant cement 3.
All you need to do is tighten 4 firmly.

In these embodiments, the material of the sleeve body 12 varies depending on the conditions of use, but in general, tetrafluoroethylene resin, corrosion-resistant metal, or the like can be used.

As described above, in the device of the present invention, the main part of the sleeve body is passed through the nozzle part of a tank or the like coated with enamel after applying acid-resistant cement to the corroded areas. It can be firmly attached to the flange formed at the lower end of the nozzle part, and can be installed without or without inserting a square punch between the outer peripheral surface of the sleeve body and the inner peripheral surface of the nozzle part. Since it is filled with acid-resistant cement, it is possible to guarantee semi-permanent use of the tank even if the corroded parts of the nozzle are repaired.
At the same time, the corroded areas near the base of the nozzle part of the tank, which could not be repaired using the "sleeve device" previously proposed by the applicant, can be effectively brought into repair. Therefore, according to the present invention, it is possible to continue using the tank without completely renewing or creating a new coating due to corrosion of the nozzle part, so its practical effect is extremely large. It is something.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views illustrating locations where repairs are carried out using the repair sleeve device of the present invention; FIG. 3 is a cross-sectional view of the sleeve main body that forms the main body of the sleeve device of the present invention; The figure is a longitudinal cross-sectional view showing two types of tightening nuts, which are other constituent members of the sleeve device according to the present invention, and FIGS. 6 and 7 are longitudinal cross-sectional views showing the seal plate and spacer as well.
Figures 8 and 9 are explanatory diagrams of the process of repairing a corroded part of a tank nozzle using the device of the present invention;
The figure is a vertical cross-sectional view showing the state in which the repair has been completed.
The figure is a longitudinal sectional view showing another repair situation according to the present invention. 3... Nozzle part; 4, 5, 6... Corrosion location;
11...Flange; 10...Sleeve body; 13
... Male thread part; 16, 18 ... Tightening nut; 2
3... Seal plate; 25... Spacer; 3
0, 31, 32, 34...Acid-resistant cement; 33...
… Square punch; 40, 41 … Gasket; 4
3,44...Mounting flange.

Claims (1)

[Claims for Utility Model Registration] 1. It has an outer diameter such that it can be charged from the outside of the container 1 into the nozzle part 3 of the container 2 coated with enamely, and has a flange at one end. 11 and a male thread 13 formed on the outer surface of the other end thereof, and a hole 22 having an inner diameter approximately equal to the outer diameter of the portion of the sleeve main body 12 where the male thread 13 is formed, and a hole 22 of the nozzle portion 3. For repairing the nozzle part of an enamel coated container, which is composed of a seat plate 23 having an outer diameter larger than the inner diameter, and a tightening nut 18 having a female thread 17 that engages with a male thread 13 of a sleeve body 12. Sleeve device. 2 Square punching packing 33 divided into several pieces so as to have a cross-sectional shape corresponding to the gap between the inner diameter of the nozzle part 3 and the outer diameter of the sleeve body 12
and a tightening nut 16 having an internal thread 15 that engages with an external thread 13 of the sleeve body 12.