JP2000193232A - Support structure for burner tile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide support structure for a burner tile which can suppress the drop of support capacity to a burner tile caused by the deflection by thermal expansion. SOLUTION: In support structure for a burner tile which has a bottom support means for supporting a burner tile from under so as to fix the burner tile to a vertical furnace wall and a side support means for supporting the burner tile from side, the bottom support means is composed of a center bracket 11 for supporting the center of the bottom of the burner tile and a pair of corner brackets 12 for severally supporting the under right and left angles of the burner tile, and these members are arranged apart from each other in width direction. Furthermore, this structure is arranged so that these several members may be fixed to a front plate 3 to attach and fix a burner to the furnace wall and that they may be supported by this in condition that they are placed on the auxiliary bracket 14 fixed directly to a casing plate 1 constituting the furnace wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner tile support structure for fixing a burner tile disposed around a burner to a furnace wall in a heating furnace such as a steam reforming furnace. .

[0002]

2. Description of the Related Art In a heating furnace such as a steam reforming furnace, when a radiant wall type in which a burner is disposed on a vertical furnace wall is employed, a relatively large and heavy-weight refractory brick is disposed around the burner. Conventionally, a burner tile support structure as shown in FIG. 6 is employed so that a certain burner tile is securely fixed to a furnace wall.

[0003] The burner tile 62 includes a heat insulating plate 63 provided by lower and side support members 64 and 65 fixed to a front plate 61 for attaching and fixing the burner 2 to a vertical casing plate 1 forming a furnace wall. It is supported with. The lower support member 64 that supports the burner tile 62 from below has a relatively strong structure in which the load of the burner tile 62 acts, while the side support member 65 that supports the burner tile 62 from the side has It has a function of maintaining the shape of the burner tile 62 which can be divided into a plurality of parts so that the burner tile 62 can be easily assembled, and a function of preventing the burner tile 62 from falling off.

[0004]

In such a structure for supporting a burner tile, the support members 64 and 65 are not directly exposed to the flame of the burner 2, but the heat is transferred from the burner tile 62 to a high temperature. It becomes a state and causes thermal expansion. In particular, the bending of the lower support member 64 extended in the width direction along the lower surface of the burner tile 62 is remarkable,
As a result, there is an inconvenience that the ability to support the burner tile 62 is reduced.

[0005] The present invention has been devised to solve such problems of the prior art, and its main objects are as follows.
An object of the present invention is to provide a burner tile support structure capable of suppressing a decrease in support ability for a burner tile due to deflection due to thermal expansion.

[0006]

In order to achieve the above object, according to the present invention, there is provided a lower supporting means for supporting a burner tile from below in order to fix the burner tile to a vertical furnace wall; In a support structure for a burner tile having side support means for supporting the burner tile from the side, the lower support means comprises a plurality of members arranged apart from each other in the width direction. According to this, it is possible to suppress the bending due to the thermal expansion, and it is possible to prevent the supporting ability for the burner tile from being greatly reduced due to the thermal expansion.

In particular, the plurality of members constituting the lower support means are a center bracket for supporting the lower surface center of the burner tile, and a pair of corner brackets for supporting left and right corners on the lower side of the burner tile. According to this, it is possible to reliably support the burner tile with a simple configuration.

[0008] The plurality of members constituting the lower support means include:
It may be fixed directly to the casing plate forming the furnace wall,
Alternatively, the burner may be fixed to a front plate for attaching and fixing the burner to the furnace wall, and the burner tile may be fixed to the furnace wall via the front plate.

Further, the plurality of members constituting the lower supporting means are fixed to the front plate and supported by the auxiliary bracket while being mounted on the auxiliary bracket directly fixed to the casing plate. According to this, the load of the burner tile acting on the front plate can be reduced, and the detachability of the front plate can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows a first embodiment of a burner tile support structure according to the present invention. Here, a burner tile 4 is supported together with two heat insulating plates 5 and 6 on a front plate 3 for attaching and fixing a burner 2 to a vertical casing plate 1 forming a furnace wall. . The burner 2 is fixed to the opening edge of the center hole 3a of the front plate 3 by bolting, and the front plate 3 is attached to the mounting hole 1a of the casing plate 1.
Is fixed to the opening edge portion by bolts.

The burner tile 4 has a center hole 4a into which the flame blowing portion 2a of the burner 2 is fitted, and is divided into four divided bodies by cuts extending vertically and widthwise from the center hole 4a. It has become. Burner tile 4
Grooves 7 are formed on the left and right sides of the burner tile 4 in the vertical direction, and grooves 8 are formed on the lower surface of the burner tile 4 in the width direction.

The heat insulating plate 5 on the burner tile 4 side is made of ceramic fiber, and the heat insulating plate 6 on the front plate 3 side.
Consists of calcium silicate. These two heat insulating plates 5 and 6 are provided with a center hole (not shown) so that the flame blowing part 2a of the burner 2 penetrates.

As shown in detail in FIG. 2, a center bracket 11 and a pair of left and right corner brackets 12 are provided below the front plate 3 as a lower support means. Further, two sets of side brackets 13 as side support means are provided vertically on both left and right sides of the front plate 3.

On the other hand, the mounting hole 1a of the casing plate 1
Center and corner brackets 11
An auxiliary bracket 14 that supports the underside 12 from below is secured in a manner protruding toward the core side. A total of four auxiliary brackets 14 are provided corresponding to the left and right ends of the center bracket 11 and the left and right corner brackets 12, respectively.

The center bracket 11 supports the center of the lower surface of the burner tile, and has a lower plate 11a whose inner surface (upper surface) is in contact with the lower surface of the burner tile, and an inner surface of the lower plate 11a. A turning plate portion 11b connected to a T-shaped cross section, and a locking portion 1 connected to the tip of the lower plate portion 11a to engage with a groove 8 (see FIG. 1) on the lower surface of the burner tile 4.
1c. When the front plate 3 is assembled to the casing plate 1, a pair of inner auxiliary brackets 14 abut on the left and right ends of the lower surface of the lower plate 11 a, and the center bracket 11 is placed on the auxiliary bracket 14. Supported by

The corner bracket 12 supports a pair of left and right corners on the lower side of the burner tile. A side plate portion 12a whose inner surface is in contact with the side surface of the burner tile, and an inner surface (upper surface) is a burner tile. Lower plate part 1 that contacts the lower surface of the tile
2b and a locking portion 12c which is coupled to the tip of the side plate portion 12a and the lower plate portion 12b and engages with the groove 8 (see FIG. 1) on the lower surface of the burner tile 4. The side plate portion 12a and the lower plate portion 12b are joined in a right-angle L-shape. In the assembled state, the lower plate portions 12b of the left and right corner brackets 12
A pair of outer auxiliary brackets 14 are in contact with the lower surfaces of the brackets, respectively, and the corner brackets 12 are supported on the auxiliary brackets 14 while being mounted on the auxiliary brackets 14.

The side bracket 13 supports the side surface of the burner tile. The side plate portion 13a whose inner surface is in contact with the side surface of the burner tile, and the shrinking plate portion joined to the inner surface of the side plate portion 13a in a T-shaped cross section. 13b and the side plate portion 13
and a locking portion 13c which is connected to the front end of a and engages with the groove 7 (see FIG. 1) on the side surface of the burner tile 4.

The burner tile 4 and the two heat insulating plates 5.6 shown in FIG. 1 are mounted in the mounting spaces inside the center, corner and side brackets 11 to 13 constructed as described above. At this time, the turning plate portions 11b and 13b of the center and side brackets 11 and 13 are provided.
Are assembled into the two heat insulating plates 5 and 6. In addition, the burner tiles 4 are assembled inside the brackets 11 to 13 from the lower side of the divided body,
At this time, the tip of the turning plate portion 11b of the center bracket 11 is sandwiched between the divided surfaces of the pair of lower divided bodies of the burner tile 4.

In such a structure for supporting a burner tile, relatively large thermal expansion occurs in the center bracket 11 in the width direction and in the front-rear direction. Causes significant thermal expansion. However, the thermal expansion in the front-rear direction does not greatly affect the support capacity of the burner tile, and the center bracket 1 and the corner brackets 11 and 12 are spaced apart from each other in the width direction.
1 does not affect the corner bracket 12 due to the thermal expansion in the width direction and does not lower the supporting ability.

FIG. 3 shows a second embodiment of a burner tile support structure according to the present invention. Here, similarly to the above embodiment, a center bracket 31 as a lower support means and a pair of left and right corner brackets 32,
Side brackets 33 as side support means are provided on the front plate 34.

The difference from the above embodiment is that the lower plate portion 13a of the center bracket 31 is formed to have a substantially T-shape in plan view. This lower plate portion 13a
Compared with the center bracket 11 shown in the above-described embodiment, the front bracket 34 has a rectangular shape in which the left and right sides of the front plate 34 are sandwiched between the turning plate portions 13b.

A pair of auxiliary brackets 35 fixed to the casing plate 1 are provided on the left and right sides corresponding to the left and right ends of the center bracket 31, and those corresponding to the corner brackets 32 are not provided. In addition,
The corner bracket 32 and the side bracket 33 are
It is the same as the corner bracket 12 and the side bracket 13 shown in the above embodiment, and the detailed description thereof will be omitted.

FIG. 4 shows a third embodiment of a burner tile support structure according to the present invention. Here, similarly to the above embodiments, a center bracket 41 as a lower support means and a pair of left and right corner brackets 42 are provided.
And two sets of upper and lower side brackets 43 and 44 as side support means are fixed to the front plate 45.

In comparison with the above embodiment, the lower portion 41a of the center bracket 41 is narrower,
2 in that the lower plate portion 42b is formed wider. Further, the side plate portion 42a and the lower plate portion 42b of the corner bracket 42 are formed in a square shape, as compared with those shown in the above-described embodiments in a tapered shape, and the tip of the side plate portion 42a is formed. An engaging portion 42c extends vertically along the edge and can be engaged with the groove 7 (see FIG. 1) on the side surface of the burner tile 4.

The upper and lower side brackets 43 and 44
The side plate portions 43a and 44a have different widths, and the side plate portion 44a of the lower side bracket 44 is formed to have substantially the same width as the side plate portion 42a of the corner bracket 42.

The turning plate portions 41b, 43b, 44b of the center bracket 41 and the side brackets 43, 44
Is formed in a square shape while the one shown in each of the above embodiments has a tapered shape. Then, the reversing plate portion 41b of the center bracket 41 is formed to have a length corresponding to the thickness of the heat insulating plate, like the reversing plate portions 43b and 44b of the side brackets 43 and 44, and is different from the above-described embodiment. It is not sandwiched between the divided surfaces of the burner tile.

The locking portions 41c, 43c, 44 of the center bracket 41 and the side brackets 43, 44
c can be engaged with the grooves 7.8 on the side surface and the lower surface of the burner tile 4 (see FIG. 1) as in the above embodiment. Four auxiliary brackets 46 are provided as in the first embodiment.

FIG. 5 shows a fourth embodiment of a support structure for a burner tile according to the present invention. Here, a center bracket 51 forming the lower supporting means is fixed to the casing plate 1, and a pair of left and right corner brackets 52 also forming the lower supporting means are fixed to the front plate 56. On the other hand, three sets of upper and lower side brackets 53 to 55 as side support means are fixed to the front plate 56 together with the corner bracket 52.

The lower plate portion 51a of the center bracket 51
It has a narrow band plate shape in the front and rear direction, and a lower surface is joined to a tip portion of a turning plate portion 51b fixed to a lower edge portion of the mounting hole 1a of the casing plate 1. A locking portion 51c that engages with the groove 8 (see FIG. 1) on the lower surface of the burner tile 4 is provided on the tip side of the lower plate portion 51a.

Lower plate portion 52 of corner bracket 52
a and the side plate portion 52b are connected to each other in an L-shape at right angles, and are connected to the side surface and the lower surface of the convex portion 57 of the front plate 56, respectively. This corner bracket 52
Is provided with a locking portion 52c which engages with the groove 8 on the lower surface of the burner tile 4. When the front plate 56 is assembled to the casing plate 1, an auxiliary bracket 58 fixed to the lower edge of the mounting hole 1 a of the casing plate 1 is provided on the lower surface of the lower plate 52 a, similarly to the turning plate 51 b of the center bracket 51. The corner bracket 52 abuts and is supported by the auxiliary bracket 58 in a state where the corner bracket 52 is placed on the auxiliary bracket 58.

Each side plate 53a, 54a, 55a of the side bracket 53, 54, 55
Is connected to the side surface of the convex portion 57. Locking portions 53b, 54b, 5 that engage with grooves 7 (see FIG. 1) on the side surfaces of the burner tile 4 are provided at the distal ends of the side brackets 53, 54, 55.
5b are provided respectively. An upper end of the upper side bracket 53 is provided with a locking portion 53c that can be engaged with the upper surface of the burner tile 4. In the assembled state, auxiliary brackets 59, 60 and 61 fixed to the side edges of the mounting holes 1a of the casing plate 1 abut against the outer surfaces of the side plate portions 53a, 54a and 55a, respectively.
a to 55a are prevented from deforming outward.

[0033]

As described above, according to the present invention, since the lower support means is composed of a plurality of members which are arranged apart from each other in the width direction, even if each member undergoes thermal expansion, no large bending occurs. In addition, a great effect is obtained in suppressing a decrease in the ability to support the burner tile due to thermal expansion.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a burner tile support structure according to the present invention.

FIG. 2 is a perspective view showing in detail a support structure of the burner tile shown in FIG. 1;

FIG. 3 is a perspective view showing a second embodiment of a support structure for a burner tile according to the present invention.

FIG. 4 is a perspective view showing a third embodiment of a burner tile support structure according to the present invention.

FIG. 5 is a perspective view showing a fourth embodiment of a support structure for a burner tile according to the present invention.

FIG. 6 is a perspective view showing a conventional burner tile support structure.

[Explanation of symbols]

Reference Signs List 1 casing plate 2 burner 3.34.45.56 front plate 11.31.41.51 center bracket 12.32.42.52 corner bracket 13.33.43.44.53-55 side bracket 14.35.46・ 58 Auxiliary bracket

Continuation of front page (72) Inventor Ryosuke Shimizu 2-12-1, Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside Chiyoda Chemical Works, Ltd.

Claims (3)

[Claims] 1. A burner tile comprising a lower support means for supporting a burner tile from below and a side support means for supporting a burner tile from a side so as to fix the burner tile to a vertical furnace wall. A support structure for a burner tile, wherein the lower support means comprises a plurality of members arranged apart from each other in a width direction. 2. A plurality of members constituting the lower support means are a center bracket supporting a lower surface center of the burner tile, and a pair of left and right corner brackets respectively supporting lower left and right corners of the burner tile. The burner tile support structure according to claim 1, wherein: 3. A plurality of members constituting the lower support means are fixed to a front plate for attaching and fixing a burner to a furnace wall, and an auxiliary bracket directly fixed to a casing plate forming the furnace wall. The burner tile support structure according to claim 1, wherein the burner tile is supported by the burner tile mounted thereon.