JPS6044592B2 - Cooling system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device, and more particularly to a cooling device for protecting the furnace walls and the like of equipment used at relatively high temperatures.

Conventionally, when using fuels such as city gas, propane, or petroleum in cooking areas or kitchens, the high temperatures of the gas burners used to use the above fuels can cause walls to become scorched or burnt out, resulting in severe damage. It was dangerous. As a countermeasure to this problem, walls were protected by pasting iron plates on them or painting them with fireproof mortar, but although they were somewhat effective, they still corrode and peel. It could not be said to be sufficient. In addition, in steel factories and the like, for example, in heating furnaces for heat-treating steel, etc., temperatures reach temperatures of at least 10,000°C or higher,
In addition, because of the high heat generated, the furnace walls made of refractory materials could melt or peel off, putting them at serious risk.

To prevent this, constantly observe the inside of the heating furnace while it is in use, pay close attention to the condition of the furnace walls, and if there is melting or peeling, stop the operation of the heating furnace, wait for it to cool, and then repair. Or the walls of the furnace had to be replaced.

However, stopping the operation of the heating furnace in this way significantly deteriorates productivity, and therefore, it is extremely dangerous to operate the heating furnace to the limit. Furthermore, constantly observing the inside of the heating furnace is a complicated task, and it is also a dangerous task for the worker due to the high temperature. In addition, in order to extend the life of the refractory bricks on the furnace wall of the heating furnace as much as possible, as shown in Figure 1, a metal such as a heat-resistant metal S is attached to the surface of the refractory brick R that faces the inside of the furnace. There is also a heating furnace, but after a certain period of use, the heat-resistant metal R also oxidizes and becomes crumbly or melts, causing damage to the refractory bricks R on the furnace wall. As explained above, the present invention is a cooling device that can effectively protect surrounding objects, such as walls, in places where high temperatures and high heat are generated.

The cooling device according to the present invention is characterized in that a coating of aluminum or aluminum alloy is provided on both sides of the plate or strip body on which the pipes are provided, or on the surface on which the pipes are provided. .

The structure and materials used for each component of the cooling device according to the present invention will be explained.

First, the pipe is preferably made of Fe-based material, such as pure iron, iron alloy, stainless steel, etc., but also corrosion-resistant metal or alloy, such as Ti, Zr, Ta, MO, N
B, alloys such as Ti, Zr, Ta, MO, and Nb, as well as copper, copper alloys, aluminum, and aluminum alloys can be used. Either is fine.

Furthermore, the dual structure of the vibrator means that the outside is made of Fe-based material and the inside is made of corrosion-resistant metal or alloy, copper, copper alloy, etc.
Although it is preferable to use a material such as aluminum or an aluminum alloy, in this case, the various materials mentioned above can be appropriately selected and used. Next, the plate-shaped body or band-shaped body on which the vibrator is provided can be made of the same material as the above-mentioned vibrator, that is, Fe-based materials, corrosion-resistant metals, alloys, etc. are preferable.

This plate-like body or band-like body may have either a single-layer structure or a double-layer structure. Furthermore, the reason why aluminum or aluminum alloy is used for the coating is that it has good thermal conductivity, is resistant to corrosion, and can firmly adhere the vibrator to the plate or strip. It is something.

When this aluminum or aluminum alloy coating is applied to both sides of a plate or strip provided with a vibrator, it is mainly the case that the plate or strip is made of Fe-based material. It is essential to coat the exposed surfaces with aluminum or aluminum alloy.

This is to make the vibrator firmly adhere to the plate-shaped body or the band-shaped body. However, even if the plate or strip is made of a material other than Fe-based material, it is a matter of course that both sides or the surface on which the vibrator is provided may be coated with aluminum or aluminum alloy. . In this way, aluminum or aluminium. To apply the alloy coating, the aluminum or aluminum alloy is melted, a plate or strip with a vibrator lightly supported is immersed in the molten aluminum or molten aluminum alloy, and then pulled out and dried. It is. The above operation is then repeated until the desired thickness is achieved.If the desired thickness is obtained in one treatment, one immersion is sufficient, or it may be repeated multiple times to obtain the desired thickness. You can also do that. In addition to this method, the vibrator and the plate or strip are separately coated with aluminum or aluminum alloy as described above, the vibrator is lightly supported on the plate or strip, and the heating furnace is heated. The vibrator and the plate-shaped body or band-shaped body are brought into close contact by heating inside the vibrator.

In any of the above methods, the coated aluminum or aluminum alloy, the material constituting the vibrator, and the material constituting the plate-shaped body or band-shaped body can be further treated by heat treatment. During this process, an interdiffusion alloy layer is formed, and the vibrator, plate or strip, and aluminum or aluminum alloy coating are each tightly and tightly fixed.

Next, the cooling device according to the present invention will be specifically explained using an example shown in the drawings.

FIG. 2 is a perspective view of a cooling device according to the present invention, showing a plate-shaped body or a band-shaped body 1 (hereinafter referred to as a plate-shaped body).

) is provided with a vibrator 2 and a coating 3 (hereinafter referred to as coating) of aluminum or aluminum alloy. The plate-shaped body 1 is cooled by flowing a cooling medium such as water through the vibe 2. Although the vibrator 2 has a meandering shape in FIG. 2, the vibrator 2 may be provided in any shape as long as it can effectively cool the plate-shaped body 1. Also,
The vibrator 2 may have a double structure (composite tube), in which case the inner side is made of a corrosion-resistant metal or alloy and the outer side is made of Fe-based material, which is suitable when using a cooling medium other than water, such as seawater. be. FIG. 3 is a cross-sectional view of a case where a vibrator 2 is provided on a plate-shaped body 1 and a coating 3 is provided only on one side of the vibrator 2.

In FIG. 4, a vibrator 2 is provided on a plate-shaped body 1, and a coating 3 is attached to the plate-shaped body 1.
FIG. 2 is a cross-sectional view of the case where the vibrator 2 is provided on both sides, including the surface on which the vibrator 2 is provided.

FIG. 5 shows that the plate-like body 1 is composed of different materials 4 and 5,
FIG. 2 is a sectional view showing a case where a vibrator 2 is provided and a coating 3 is applied to a surface on which the vibrator 2 is provided. FIG. 6 is a cross-sectional view of the case where the vibrator 2 is provided on both sides of the plate-shaped body 1 and the coating 3 is applied to both sides.

In FIGS. 3 to 6, the vibrator 2 may have a double structure, that is, a so-called joint tube.

FIGS. 7, 8, and 9 are cross-sectional views showing examples in which the cooling device according to the present invention is applied to, for example, the protection of refractory bricks in high-temperature heating furnaces. FIG. 7 shows the surface of the refractory brick R that is not coated with the coating 3,
A vibrator 2 of the plate-shaped body 1 is provided, with the surface on which the coating 3 is applied facing the inside of the heating furnace, and the plate-shaped body 1 is cooled by passing cooling water through the vibrator 2. As a result, it is possible to protect the refractory brick R and make it durable for long-term use.

In Fig. 8, a recess R'' is provided in the refractory brick R, and the side of the plate-shaped body 1 on which the vibrator 2 is provided and the coating 3 is directed toward the refractory brick R, and the recess R'' is opened. This figure shows a case where the vibrator 2 is fitted into the vibrator 2, and cooling water is passed through the vibrator 2 to cool it.

FIG. 9 shows that the coating 3 is applied to both sides of the plate-shaped body 1, including the surface on which the vibrator 2 is provided, and the vibrator 2 contacts the refractory brick R with the surface on which the vibrator 2 is provided. In this case, since there is a gap, together with the cooling of the cooling water flowing inside the vibrator 2, the refractory brick R can be extremely effectively protected.

Further, as shown in FIGS. 7 and 9, since the coating 3 is inside the furnace, it also protects the plate-shaped body 1, so that the plate-shaped body 1 will not be damaged by melting or destroyed.

Furthermore, in Figures 7, 8, and 9, the cooling water turns into extremely high-temperature steam or boiling water, so the high-temperature steam can be used for power generation by rotating a turbine, and the hot water can also be used for various purposes.

As explained above, since the cooling device according to the present invention has the above configuration, it is possible to cool the refractory bricks with this cooling device and ensure the strength of the bricks. For example, it has the effect of protecting the refractory bricks of the heat treatment furnace, making it durable for long-term use, and furthermore allowing the high-temperature cooling water to be used for various purposes.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing conventional protection of refractory bricks, Fig. 2 is a perspective view of a cooling device according to the present invention, and Figs. 3, 4, 5, and 6 are according to the present invention. 7, 8, and 9 are sectional views showing examples of cooling devices in which the cooling device according to the present invention is applied to a heat treatment furnace. 1... Plate-shaped body (band-shaped body), 2... Vibrator, 3...
Coating, 4, 5... Different material, S... Heat resistant metal, R
...Refractory brick, T...Gap.

Claims (1)

[Claims] 1. A cooling device characterized in that a coating of aluminum or aluminum alloy is provided on both sides of a plate-like body or a band-like body on which a pipe is provided, or on the surface on which the pipe is provided.