JPS6314313Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a ceiling support device in a heating furnace such as an electric furnace.

[Prior art and its problems]

With the recent development of heat-resistant materials, various heat-resistant materials have come to be used in heating furnaces instead of conventional heat-resistant bricks. Among them, ceramic fiber products are attracting attention as industrial high-temperature heat-resistant materials. Ceramic fiber is advantageous in terms of construction because it can be processed into a panel and used as it is for the ceiling plate of the furnace body, and there is no need to construct it in an arched manner as in the case of using refractory bricks. However, when the temperature inside the furnace reaches a high temperature of around 1,700℃, cracks cannot be avoided. In order to maintain the strength of the ceiling board and prevent it from falling off, alumina or mullite rods are installed inside the ceiling, but if only the edges of the ceiling board are supported, the ceiling board will sag due to its own weight, so due to weight constraints, the ceiling material cannot be used. There was a limit to the thickness and, by extension, the insulation effect.

[Purpose of invention]

The present invention solves the above problems and provides a support device that maintains the shape of the ceiling plate supported by the upper edge of the furnace wall by suspending it from above.

[Structure of the idea]

In other words, the present invention includes a first piece-shaped ceiling unit made of heat-resistant material and provided with bar insertion holes that are opened on both sides at regular intervals, and in addition to the insertion holes, there are holes that reach the insertion holes from the top surface. It has a combination arrangement with a second ceiling unit having an open side groove cut out in a concave shape over a range, and a hanging device suspended from a beam above the furnace main body is connected to the groove of the second ceiling unit. This is a ceiling support device for a heating furnace, characterized in that key points of a bar inserted between the insertion holes of each of the units are supported through the inside.

[Explanation of Examples]

Embodiments of the present invention will be described below using figures. FIG. 1 is a diagram showing the structure of a heating furnace using a heat-resistant material such as ceramic fiber. A ceiling member 3 is installed across the upper edges of the side walls 2, 2 of the furnace body 1, and supports 4, 4 are installed near the furnace body 1.
A beam 5 is placed horizontally between them.

In this case, the ceiling member 3 is suspended from an upper beam 5 using a hanging tool 6. The structure of the ceiling member 3 is shown in FIGS. 2 and 3. In FIG. 2, the ceiling member 3 is made by processing a heat-resistant material such as ceramic fiber into a rectangular piece-shaped molded body, which is then assembled into a ceiling unit 3a.
A plurality of them are arranged in parallel, and each unit 3a,
A rod 7 made of a heat-resistant material such as alumina or mullite is inserted between each unit 3a.
a, 3a... are integrally connected, and the bar 7
It is held in a single plate shape.
Therefore, as shown in FIG. 3, each unit 3a has insertion holes 8 for the rods 7 which are opened on both sides at regular intervals and at fixed positions. In Fig. 2, 9 and 10 are heater insertion holes and temperature measurement holes, which are cut out with a certain width on the opposing sides of specific units 3a and 3a arranged adjacent to each other and penetrated in the vertical direction. This is what I did. 11 is a groove into which the hanging tool 6 is inserted. The grooves 11 are provided to be distributed over the entire area of the ceiling member 3, and the details will be explained in the fourth section.
As shown in Fig. 5. That is, the groove 11 is a side-open groove 11 cut out in a concave shape on the side surface of a specific unit 3a from the upper surface thereof to the insertion hole 8.
It has been established. Although the groove 11 is open to the side surface of the unit 3a, it can be used for two or more units 3a,
When the units 3a are combined, they are closed at the sides of the adjacent units 3a. One end of the hanging tool 6 is attached around the bar 7 that is passed through the insertion hole 8 and projected into the groove 11, and the hanging tool 6 is pulled out through the groove 11 to the upper surface of the unit 3a, and its upper end is shown in FIG. It is supported by the beam 5. The structure of the hanging tool 6 is not particularly limited, and in the embodiment, it is made of heat-resistant wire material (for example, Ni
- Cr-based wire) is stretched between the bar 7 and the beam 5,
An example is shown in which it is used as a hanging tool by binding both ends. Of course, it is also possible to use a dedicated hanging tool that has locking edges such as hooks at both ends. The hanging tools 6 attached to the bars 7 from within the grooves 11 provided in the other units 3a are similarly pulled upward and supported by the beams 5. As a result, the ceiling member 3 is supported at its peripheral edge on the side wall 2 of the furnace with its upper surface suspended from the beam 5. Note that the support for attaching the upper end of the hanger is not necessarily limited to the form of a beam, and may be any suitable structure, and may also be a beam of an existing building.

[Effect of idea]

As described above, in this project, the ceiling member of the furnace body is suspended from a beam placed above it, which increases the allowable range of deflection due to its own weight. The heat insulation effect can be further enhanced. Moreover, by using a combination of a first ceiling unit having an insertion hole and a second ceiling unit having an insertion hole and a side-open groove, the rod material inserted between the units can be made by selecting a combination of both units. Since key points of the unit are suspended using hanging tools, it is possible to effectively use a part of the bar that spans between each unit for hanging.Moreover, by forming an open groove on the side of each unit that reaches the insertion hole. The hanging tools can be easily attached and removed, making construction work and post-construction maintenance, repair, and unit replacement extremely easy.

As described above, according to the present invention, the characteristics of ceramic fibers and the like can be effectively utilized to improve the performance of the furnace, and at the same time, it is possible to reduce energy consumption.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an example of a heating furnace to which the present device is applied, Fig. 2 is a plan view showing an example of a ceiling member, Fig. 3 is a side view of a ceiling unit, and Fig. 4 is a mounting structure of a hanging fixture. FIG. 5 is a front view of the same. 1...Furnace body, 2...Side wall, 3...Ceiling member,
3a...Ceiling unit, 5...Beam, 6...Hanging tool,
7... Bar material, 8... Insertion hole, 11... Groove.

Claims (1)

[Scope of utility model registration request] A first piece-shaped ceiling unit made of heat-resistant material and provided with bar insertion holes opening on both sides at regular intervals; A second ceiling unit having a groove with a concave cutout and an open side is arranged in combination with the second ceiling unit. A ceiling support device for a heating furnace, characterized in that a rod inserted between the insertion holes of each unit is supported at key points.