JPH047179Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Technical Field" The present invention relates to a hanging panel applied to a heating furnace or the like.

"Prior art and its problems" In heating furnaces that heat objects such as steel with a flow of high-temperature gas, radiation of the high-temperature gas is primarily used as a means of heat transfer. Due to the low heat transfer efficiency of the furnace. Therefore, in recent years, it has been proposed to improve heat utilization efficiency by installing a radiant panel inside the furnace. It has also been proposed to use a breathable plate-like body as such a radiant panel.

In Utility Model Application No. 60-45362, the present applicant proposed a radiant panel that is suspended and installed within a heating furnace. This radiant panel includes at least two hanging rods suspended from the upper furnace wall at a predetermined interval;
A bottom plate connected to the lower part of the hanging rod, a plurality of vertical frames whose lower ends are supported by the bottom plate, stand parallel to each other, and have guides formed on their inner surfaces; The apparatus includes ceramic blocks supported by the vertical frame and arranged between the vertical frames, and a horizontal frame connected to the upper part of the hanging rod and supporting the upper part of the vertical frame.

However, in the above-mentioned radiant panel, a guide groove with a U-shaped cross section is formed on the top surface of the bottom plate and the bottom surface of the horizontal frame, and the vertical frame is supported by simply inserting the upper and lower ends of the vertical frame into this guide groove. Ta.

This leaves room for the vertical frame to slide left and right along the longitudinal direction of the guide groove, which tends to cause the vertical frame to shift from its designated position or tilt within the panel surface. When assembling, replacing damaged ceramic blocks, installing panels, etc., the upper and lower ends of the vertical frame may come off the guide grooves of the bottom plate and horizontal frame, causing the frame to come apart, reducing work efficiency. It was bad. Further, the vertical frame is made of ceramics, but since ceramics shrink when fired, it is difficult to maintain sufficient dimensional accuracy. Therefore, if the length of the vertical frame varies, the vertical frame may come off from the guide groove of the horizontal frame even in the assembled state, and the frame may come apart.

Furthermore, inside such heating furnaces, ceramic plates are used not necessarily to improve heat transfer efficiency through solid radiation, but simply to partition the inside of the furnace or to form a lining layer along the side walls of the furnace. There are also cases where panels are hung, but similar problems arose in this case as well.

``Purpose of the invention'' In view of the above-mentioned problems with conventional hanging panels, the purpose of the invention is to ensure that the upper part of the vertical frame is firmly held by the horizontal frame, so that even if the length of the vertical frame varies, the vertical frame To provide a hanging panel which is prevented from coming off from a horizontal frame.

"Structure of the invention" The hanging panel according to the invention includes at least two hanging rods suspended from the upper part of the furnace at a predetermined interval, and a bottom plate connected to the lower part of the hanging rods.
A plurality of vertical frames whose lower ends are supported by the bottom plate and are erected parallel to each other and have guides formed on their inner surfaces, and a plurality of vertical frames whose both side edges are supported by the guides and are arranged between the vertical frames. It comprises a ceramic plate-like body and a horizontal frame that is connected to the upper part of the hanging rod and supports the upper part of the vertical frame, and the upper end of the vertical frame is inserted into a through hole formed in the horizontal frame. It is characterized by

As described above, in the present invention, since the upper end of the vertical frame is inserted through the through hole of the horizontal frame, the vertical frame is firmly held by the horizontal frame and is difficult to come off. Also,
In the above-mentioned conventional technology, it was necessary to ensure high accuracy so that the dimensional error in the length of the vertical frame was smaller than the depth of the guide groove on the lower surface of the horizontal frame, but in the present invention, the length of the vertical frame Even if a larger variation occurs in the method, the vertical frame can be prevented from coming off the horizontal frame.

"Embodiment of the invention" As shown in FIG. 1, a pair of hanging rods 12, 12 are suspended in parallel through an upper furnace wall 11. A mounting fitting 13 is provided at the upper end of each hanging rod 12, and the length of the lower end of the hanging rod 12 can be adjusted by means of bolts 10 of the fitting 13. The hanging rod 12 is preferably formed of high-strength ceramic such as pressureless sintered body of silicon carbide or silicon nitride.

A bottom plate 17 is attached to the lower part of the hanging rods 12, 12. As shown in FIG. 2, the bottom plate 17 has holes 15 at both ends through which the hanging rods 12 pass, and a guide groove 16 is formed in the upper surface along the longitudinal direction. Then, the hanging rod 12 is inserted into the hole 15, and as shown in FIG. It's starting to engage. The bottom plate 17 is preferably made of high-strength ceramics similar to the suspension rod 12.

The plurality of vertical frames 19 connect their lower ends to the bottom plate 1.
7 (see FIG. 2) and are supported, and are erected substantially perpendicularly to the bottom plate 17 and parallel to each other at a predetermined interval. Vertical frame 19
The rib 19a is formed on the side edge along the longitudinal direction, and has a U-shaped or H-shaped cross section.
A guide groove 18 is formed between 9a. This guide groove 18 is open toward the adjacent vertical frame 19. These vertical frames 19 can be formed by extrusion molding, casting molding, etc. of mullite, alumina, silicon carbide, silicon nitride, or the like.

In FIG. 2, the vertical frame 19 closest to the hole 15 has a U-shaped cross section, but it may have an H-shaped cross section. Also, the vertical frame 1 that is distant from the hole 15
Although 9 has an H-shaped cross section, it is also possible to have U-shaped cross sections arranged back to back.

Between each vertical frame 19 is a ceramic plate-like body 20.
are arranged in multiple stages in the vertical direction. In this case, the ceramic plate-like body 20 may have, for example, 10 to 20
Preferably used is a honeycomb body having a square size of 1 cm to 3 cm in thickness, with a number of square holes of about 5 mm square having hole walls of 0.5 mm and openings on the square surface. This ceramic plate-like body 20 is supported by inserting its both sides into the guide groove 18 of each vertical frame 19, and is arranged in multiple stacks in the vertical direction between each vertical frame 19 to form a panel surface. do.

The horizontal frame 22 has both ends thereof penetrated by the hanging rod 12 and is connected to the upper part of the hanging rod, so that the horizontal frame 22 can be slid up and down. Further, as shown in FIGS. 4, 5, and 6, the horizontal frame 22 has ribs 22a formed on both side edges along the longitudinal direction, and has an H-shaped cross section. Furthermore, the upper end portion 19b of the vertical frame 19
is reduced in diameter into a prismatic shape, and its upper end portion 19b is inserted into and supported by a through hole 22b formed in the horizontal frame 20. Further, a stepped portion 19c is formed at the lower part of the upper end portion 19b of the vertical frame 19 (see FIG. 6).
The ribs 22a of the horizontal frame 22 are placed on this stepped portion 19c, and therefore the horizontal frame 22 is placed on the vertical frame 19.

In the above configuration, the hanging rod 12 suspended from the upper furnace wall 11 supports the bottom plate 17, and
The horizontal frame 22 is supported so as to be vertically slidable. The vertical frame 19 has its lower end fitted into the guide groove 16 of the bottom plate 17, and its upper end inserted into the through hole 22b of the horizontal frame 22 to be supported. In addition, the ceramic plate-like body 20
is supported by inserting its both sides into the guide grooves 18 of each vertical frame 19, thereby forming a panel surface. Therefore, a plurality of ceramic plates 20 can be tightly assembled to form a hanging panel having a wide area. In this case, the ceramic plate-like body 20 has, for example, a honeycomb shape and has air permeability, so that high-temperature gas can easily flow therethrough, heat can be easily transferred, and radiation performance is also good. Most of the load of each ceramic plate-like body 20 is applied to the bottom plate 17,
Since it is not applied to the vertical frame 19 or the horizontal frame 22, and almost no bending stress is applied, the vertical frame 19 or the horizontal frame 2
2 has a structure that is difficult to damage. Furthermore, when assembling this hanging panel, the ceramic plate-like bodies 20 can be inserted between the vertical frames 19 and arranged vertically, resulting in good workability.

Furthermore, a feature of the present invention is that the upper end 19b of the vertical frame 19 is inserted and supported in the through hole 22b of the horizontal frame 22. This ensures the positioning and fixing of the vertical frame 19 when assembling the hanging panel, and it becomes easy to stack the ceramic plates 20. Moreover, since the vertical frame 19 is less likely to come off than the horizontal frame 22 when assembling the hanging panel or repairing the ceramic plate-like body 20, it is possible to prevent the frame from coming apart during the work. Further, even if the dimensions of the vertical frame 19 vary to some extent, the vertical frame 19 will not come off the horizontal frame 22, and there is also the advantage that the dimensional accuracy of the vertical frame does not have to be strict.

Incidentally, in the above embodiment, the horizontal frame 22 is placed on the stepped portion 19c formed at the top of the vertical frame 19, but as shown in FIG. The portion 19b may be inserted and supported by the horizontal frame 22 as it is without being reduced in diameter. In this case, in order to prevent the horizontal frame 22 from falling downward along the hanging rod 12 or to prevent the weight of the horizontal frame 22 from being applied to the ceramic plate-shaped body 20,
A slit 24 may be formed in the upper part of the hanging rod 12, and the locking piece 23 may be inserted into the slit 24 to support the lower part of the horizontal frame 22.

In the above embodiment, the lower end of the vertical frame 19 is simply fitted into the guide groove 16 of the bottom plate 17, but by reducing the diameter of the lower end of the vertical frame 19, the bottom plate 1
A through hole or a recessed hole may be formed in 7 to prevent the lower end of the vertical frame 19 from shifting in the guide groove 16 of the bottom plate 17.

In the present invention, the number of hanging rods may be three or more as necessary. In addition, in the above embodiment, the vertical frame 1
Both side edges of the ceramic plate 20 are inserted into the guide grooves 18 of the vertical frame 19.
A protrusion is formed on the inner surface of the ceramic plate-shaped body 2.
Guide grooves may be formed on both side edges of the groove. Further, the horizontal frame 22 is not limited to an H-shaped cross section, but may have a U-shaped cross section, a prismatic cross section, or the like. Another advantage of the present invention is that a ceramic material having a shape that can be easily manufactured by extrusion molding can be used for the horizontal frame 22 without casting or casting molding. In that case, the through holes 22b can be provided by machining before or after firing.

Furthermore, as the ceramic plate-like body 20, a honeycomb-shaped one is preferable because it is lightweight and has low air permeability resistance, and among them, those made of cordierite, mullite, silicon carbide, silicon nitride, alumina, etc. are highly preferable. It is more preferable to have radioactivity and/or high heat resistance. However, the breathable ceramic plate-like body 20 is not limited to a honeycomb shape, and may have, for example, a three-dimensional network of ventilation holes. Moreover, although it is preferable that the ceramic plate-like body 20 has air permeability, it may be non-air permeable.

When applying the hanging panel according to the present invention to a heating furnace as a radiant panel, it is efficient to suspend it perpendicular to the flow of high-temperature gas; however, the present invention is not limited to this. A plurality of hanging panels may be installed in parallel at predetermined intervals along the direction. Moreover, when the width inside the heating furnace is wide, a plurality of hanging panels as described above may be installed adjacent to each other in the horizontal direction.

As mentioned above, this hanging panel is preferably installed so as to be suspended almost perpendicular to the hot gas flow, but is not necessarily limited to this, and it may be hung obliquely or parallel to the hot gas flow. It may be installed lowered.

"Effects of the Invention" As explained above, according to the present invention, the upper end of the vertical frame is inserted and supported through the through hole formed in the horizontal frame, so that the vertical frame is firmly held by the horizontal frame. This prevents the frame from coming apart during assembly or repair work. Further, even if the dimensions of the vertical frame vary, the vertical frame can be prevented from coming off the horizontal frame, and the dimensional accuracy of the length of the vertical frame can be considerably relaxed.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the hanging panel according to the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a sectional view taken along line A-A in Fig. 1.
4 is an enlarged front view of portion C in FIG. 1, and FIG. 5 is a sectional view taken along the line D-D in FIG.
A plan view along the line, FIG. 6, is E- in FIG.
FIG. 7 is a sectional view taken along line E and a partial plan view showing another example of the connection structure between the upper part of the vertical frame and the horizontal frame in the hanging panel according to the present invention. In the figure, 11 is an upper furnace wall, 12 is a hanging rod, 17 is a bottom plate, 18 is a guide groove, 19 is a vertical frame, 19a is a rib, 19b is an upper end, 20 is a ceramic plate, 22 is a horizontal frame, 22a is a rib, and 22b is a through hole.

Claims (1)

[Scope of utility model registration request] A hanging panel installed in a furnace, comprising at least two hanging rods hanging at a predetermined interval from the upper part of the furnace, and a bottom plate connected to the lower part of the hanging rods. , a plurality of vertical frames whose lower ends are supported by the bottom plate and are erected in parallel to each other and have guides formed on their inner surfaces; and a plurality of vertical frames having both side edges supported by the guides and arranged between the vertical frames and a horizontal frame that is connected to the upper part of the hanging rod and supports the upper part of the vertical frame, and the upper end of the vertical frame is inserted into a through hole formed in the horizontal frame. A hanging panel characterized by: