JPH0744956Y2 - Insulation structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating structure having a structure for connecting a ceramic fiber laminated body and a supporting body supporting the laminated ceramic fiber by means of supporting metal fittings provided with a large number of tooth-shaped projections.

[0002]

2. Description of the Related Art Conventionally, ceramic fibers have been widely used as a heat insulating material for industrial furnaces due to their excellent characteristics such as light weight, high heat resistance and low thermal conductivity.

There are various products made of ceramic fibers, but sheet products such as blankets and felts have been mainly used as heat insulating materials for industrial furnaces.

When a blanket or felt is used as a heat insulating material for a furnace wall, it is usually pierced while being piled on a heat-resistant metal pin previously attached to a furnace casing until it has an appropriate thickness, and fixed with a washer or a nut.
This method is commonly referred to as the layer lining method.

However, in recent years, the block lining method has been widely adopted in order to cope with high temperature furnaces and shorten the time required for construction. The block lining method is different from the layer lining method, in which a block-shaped heat insulating material made by cutting a blanket into an appropriate size in advance and laminating it is attached to the furnace casing by an appropriate attaching means,
It has the feature that the furnace wall can be constructed in a short time.

Such a heat insulating structure is shown in FIGS. 9 to 11.
A heat insulating structure as shown in is known.

The heat insulating structure shown in FIG. 9 is obtained by bonding a ceramic fiber laminate 2 and a support 1 attached to a furnace casing with an adhesive 3.

In the heat insulating structure shown in FIG. 10, a support rod 5 inserted into a ceramic fiber laminate 2 is supported by a support metal fitting 4 previously attached to the support 1.

The heat insulating structure shown in FIG. 11 is formed by piercing the L-shaped pin 1a attached to the support 1 with the strip blanket 6 while laminating the ceramic fiber laminate 2.

[0010]

The conventional heat insulating structure as described above has the following problems.

The heat insulating structure shown in FIG. 9 has a simple structure, is easy to manufacture, and is inexpensive, while the ceramic fiber laminate 2 is supported on the support 1 only by the adhesive 3, and therefore the adhesive is adhered. The adhesive agent 3 and the ceramic fiber laminate 2 are easily peeled off at the adhesive surface, and there is a problem in reliability during use.

With respect to the heat insulating structure shown in FIG. 10, it is difficult to form long holes at precise positions in the ceramic fiber laminate 2 which is easily deformed. Further, in this heat insulating structure, when the supporting metal fitting 4 enters the ceramic fiber laminated body 2, it cannot be seen from the outside.
Difficult to connect with. For this reason, it can be mechanically strongly supported and the reliability at the time of use is satisfied, but it has problems that it is difficult and expensive to manufacture and construct.

The heat insulating structure shown in FIG. 11 is simpler in structure than the case shown in FIG. 10 and satisfies the reliability in use, but like the heat insulating structure shown in FIG. 10, it is difficult and expensive to manufacture. .

Further, the common drawback of FIGS. 10 and 11 is that the support rod 5 and the L-shaped pin 1a must be inserted over the entire length of the ceramic fiber laminate 2 in the laminating direction, or otherwise. This does not mean that all of the strip blankets 6 forming the ceramic fiber laminate 2 are supported.

If this condition is not satisfied, the strip blanket 6 that is not supported during use may fall off. Similarly, the support bar 5 and the L-shaped pin 1a are easily bent by their own weight during use, and as a result, the heat insulating structure is easily deformed. Especially when it is used for the ceiling part, a gap is created on the inner surface of the ceramic fiber laminate 2 inside the furnace, and a high-temperature flame penetrates into the inside of the furnace to reduce the heat insulation effect. The body itself deteriorates from the inside, leading to the dropout. In order to avoid this, the support rod 5 and the L-shaped pin 1a
Has the disadvantage of being as thick as possible and expensive.

The purpose of the present invention is to make up for these drawbacks of the prior art. As a means for connecting the ceramic fiber laminate and its support, the strip-shaped blanket forming the ceramic fiber laminate is attached to the mouth end surface of the strip blanket. An object of the present invention is to provide a heat insulating structure in which a part of a support fitting is pierced and the support fitting is fixed to a support body so that it cannot be freely attached or detached.

[0017]

Therefore, in order to achieve this object, the present invention proposes a plurality of strip-shaped blankets in which a plurality of tooth-shaped projections provided on a support fitting constitute a ceramic fiber laminate. The support metal fittings, which are pierced by the wood facings facing each other, are provided on the support that supports the ceramic fiber laminate, and the direction in which the dents pierce and the force that supports the laminate differ between 45 and 135 degrees. The gist is a heat insulating structure characterized in that the laminated body is supported from both sides by support metal fittings at the mouth end.

The preferred embodiment of the present invention is as follows. (1) The support fitting and the support are fixed by a detaching mechanism. (2) The support overlaps so as to cover the support fitting. (3) The ceiling part and the side part of the support are connected by a hinge,
Also, the angle is kept at an arbitrary angle of 0 degree or more and 180 degrees or less by the force of the spring. (4) The support and the support fitting are integrally formed.

[0019]

EXAMPLES Next, examples of the present invention will be described in detail.

Embodiment 1 FIG. 1 shows an example of the present invention in which the support body and the support metal fitting attached to the furnace casing cannot be detached.

The ceramic fiber laminated body 35 is obtained by cutting strip brackets 16 each having a length and width of 300 mm from a large blanket having a thickness of 25 mm, for example.
In the illustrated example, 14 sheets are laminated and bound with a thread while being compressed so that each side is 300 mm.

Each strip-shaped bracket 16 constituting the ceramic fiber laminated body 35 has a wood mouth surface 30 formed by the wood mouth, for example, 300 × 300 mm. A large number of tooth-shaped projections 9 of the support fitting 8 are pierced into the wood mouth surface 30. Then, a support body 7 made of an iron plate or punching metal is placed on the support metal fitting 8 and is joined and fixed by electric welding or eyelet at a joint portion 12. Of course, an adhesive may be used in combination to fix the support 7 and the ceramic fiber laminate 35, and the attachment to the furnace casing may be performed by a conventionally known method.

The support 7 and the support fitting 8 may be made separately and later joined at the joining portion 12, or they may be integrally punched in the joined portion 12 of the support 7 and the support fitting 8. Alternatively, the toothed projections 9 can be formed by piercing the tooth-shaped projections 9 into the ceramic fiber laminated body 35 while bending them at right angles along a line corresponding to the joint portion 12.

In FIG. 2, the support fitting 8 is a side surface portion 1.
3 and 14 teeth 14 in the illustrated example having a height of 40 mm, for example. Angle α made by these two parts
Is 90 degrees. The angle α is 90 °, which is most effective for supporting the ceramic fiber laminate 35, and 45 °
A range of degrees to 135 degrees is desirable.

The longer the length of the tooth-like projection 9 is, the larger the holding effect of the ceramic fiber is, but the longer the length of the tooth-like projection 9 is, the more easily it bends and the shorter the length of half of the side in the insertion direction of the ceramic fiber laminate 35 is. Is preferred, but more can be done.

The number of tooth-shaped projections 9 is set to be equal to or larger than the number of strip-shaped blankets 16 constituting the ceramic fiber laminated body 35, and at least one tooth-shaped projection 9 is stabbed in each strip-shaped blanket 16. Is preferred, but is not necessarily limited.

FIG. 3 shows an example of another supporting metal fitting, and the supporting metal fitting 11 is obtained by integrally punching a plurality of rows of tooth-shaped projections 10 from a single metal plate. The tooth-shaped projections 10 of the support fitting 11 are also set at an angle α, like the support fitting 8.

Embodiment 2 Embodiment 2 is an example in which the support body and the support metal fitting attached to the furnace casing are fixed by a simple attachment / detachment mechanism.

In FIGS. 4 and 5, the groove 15 of the support 14 is shown.
The protrusion 17a of the support metal fitting 17 can be fitted inside along. The ceramic fiber laminated body 35 is, for example, 14 pieces of 25 mm strip blankets 16 which are stacked and compressed and bound with a thread so that one side is 300 mm.

300 produced by the mouth of the strip blanket 16 which constitutes the ceramic fiber laminate 35.
Fourteen tooth-like projections 18 of the support fitting 17 are pierced on the wood opening surface 30 of × 300 mm. Then, the support 14 is overlapped so as to cover it from above, and the protrusion 17 of the support fitting 17 is provided.
a is fitted into the groove 15 of the support 14 and fixed integrally.

Example 3 Example 3 is an example having a desorption mechanism different from that of Example 2. 6 and 7, the protrusion 22 provided on the support fitting 20 is a return protrusion, and the window-like opening 23 is formed so that the protrusion 22 fits exactly into the support 19.
Is provided.

The materials are selected so that the support 19 and the support fitting 20 have appropriate deflections. For example, when it is made of an iron plate having a thickness of 1.5 mm, it is possible to form a structure in which the projection 22 and the opening 23 are fitted to each other by the force of human being and are not separated from each other spontaneously.

The tooth-like projections 21 of the support metal fitting 20 are pierced into the wood mouth surface 30 formed by the wood mouth of the strip-shaped blanket 16 which constitutes the ceramic fiber laminate 35, and the support body 19 is pushed over the wood mouth surface 30 to push the wood surface. The support 19 and the support fitting 20 are easily fixed.

Embodiment 4 The support 33 attached to the furnace casing is the support fitting 3.
This is an example in which the structure is fixed by a simple attachment / detachment mechanism so as to cover 2 and the side surface of the support body 33 can be arbitrarily opened and closed.

In FIG. 8, the support 33 is the ceiling portion 2
4 and side parts 27, and two side parts 27
At least one of them is joined by a hinge 40 at a joint portion 25 with the ceiling portion 24. The angle θ formed by the two is maintained at an arbitrary angle of 0 ° or more and 180 ° or less, preferably about 80 ° or more and 180 ° or less by the force of a spring (not shown).

The side surface portion 27 joined by this hinge 40
Can be easily opened at an arbitrary angle from 0 degree to θ or less by an external force, and returns to the original angle θ again when the external force is released.

At this time, if the arbitrary angle is smaller than the angle θ, the side surface portion 27 spreads outward, and when this is applied as a heat insulating material for the furnace, a gap is formed between the adjacent heat insulating materials. The angle θ is optimally 90 degrees. If the angle θ is larger than this angle, there is the inconvenience that the side fitting 27 cannot be inserted unless the side portion 27 is manually opened when the support fitting 32 is pushed into the support 33, but this is functionally different. Absent.

A hole 26 is formed in the side surface portion 27, and the size of the hole 26 is such that the projection 28 provided on the support fitting 28 fits snugly therein. Further, the tip end portion 31 of the side surface portion 27 and the tip end portion 38 of the support fitting 32 are bent to the outside and the inside by, for example, about 20 degrees,
By doing so, when the support 33 and the support fitting 32 are fixed, the operation becomes even easier.

A large number of protrusions 29 of the support fitting 28 are stuck into the mouth of the strip-shaped blanket.

[0040]

[Effect of the Invention] As is clear from the above explanation,
This device has the remarkable effects described below. (1) Since each strip blanket forming the ceramic fiber laminate is supported by a large number of tooth-shaped projections, the support is reliable and there is no fear of falling off during use. (2) Since the tooth-shaped protrusions are pierced into the wood openings of the strip-shaped blanket to support the strip-shaped blanket, even relatively short tooth-shaped protrusions can be effectively supported. (3) Furthermore, since the length of the tooth-like projection is short, there is little risk of bending due to its own weight even during heat, material costs are easy, and it can be used safely on the ceiling or the like. (4) The short tooth projection has another advantage that it is easy to pierce, and the tooth projection can be easily pierced at an accurate position of the ceramic fiber laminate. (5) When the support and the support metal can be freely attached and detached, the support and the support metal can be separated in advance, and the support can be attached to the furnace casing while visually checking the support first. It is possible to eliminate inefficient and incomplete work such as mounting work in a state of being groped while being blocked by the ceramic fiber laminated body integrated with. (6) By attaching the support in advance by an appropriate means and then attaching the ceramic fiber laminate pierced by the support fitting to the support, accurate and efficient construction can be performed. (7) Similarly, even in the case of repairing, the supporting metal fitting integrated with the ceramic fiber laminated body can be easily separated from the supporting body from the inside of the furnace, so that the required repairing can be performed at a minimum and quickly. It can be carried out. (8) The piercing direction of the tooth-like projections and the direction of the force that supports the laminated body are different in the range of 45 to 135 degrees, and the laminated body is supported by the tooth-like projections from both side surfaces, so the hooking portion and the tip end are opened. It is possible to support the laminated body on the entire wide surface of the tooth projection without requiring a curved shape. Further, the strength of the laminated body portion to which the supporting force is applied does not decrease even when the tooth-like projection is pierced. For these reasons, the supporting force can be very strong. As a result, it can be used safely on the ceiling.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing the support fitting of FIG.

FIG. 3 is a perspective view showing an example of another support fitting.

FIG. 4 is a front view showing a second embodiment of the present invention.

5 is a side view of the second embodiment shown in FIG.

FIG. 6 is a front view showing a third embodiment of the present invention.

7 is a side view of the third embodiment shown in FIG.

FIG. 8 is an exploded perspective view showing a fourth embodiment of the present invention.

FIG. 9 is a side view showing a conventional example.

FIG. 10 is a side view showing a conventional example.

FIG. 11 is a side view showing a conventional example.

[Explanation of symbols]

8, 17, 20, 32 Support metal fittings 9, 10, 18, 21, 29 Teeth 35 Ceramic fiber laminate 16 Strip blanket 7, 14, 19, 33 Support

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic references Sho 58-120499 (JP, U) Edited by the Ceramic Data Book “Ceramic Data Book '82” (Show 57-3-5) Industrial Products Technology Association P ． 346-347

Claims (1)

[Scope of utility model registration request] 1. A large number of tooth-shaped projections provided on a support fitting are pierced on the facing mouths of a plurality of strip-shaped blankets forming a ceramic fiber laminate,
Supporting metal is provided on the support that supports the ceramic fiber laminated body, and the direction of the piercing of the tooth projection and the direction of the force that supports the laminated body differ between 45 degrees and 135 degrees,
A heat insulating structure characterized in that the laminated body is supported by supporting metal fittings from both sides at the mouth end.