JP3548455B2 - Construction method of heat resistant block - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is an improvement in a method of installing a heat-resistant block in which a heat-resistant block is mounted on the inner surface of a furnace wall of various industrial furnaces such as an incinerator, a melting furnace, a heating furnace, or a heat treatment furnace, and further, on the inner surface of a wall requiring a heat-resistant structure. About.
[0002]
[Prior art]
Conventionally, in the above-mentioned industrial furnace, in order to protect the steel shell forming the furnace wall, an inorganic fiber blanket having excellent heat resistance such as ceramic fiber, alumina fiber, silica fiber or the like is provided on the inner surface of the furnace wall (iron shell). Are laminated.
[0003]
As a furnace wall lining structure of the heat-resistant block, Japanese Patent Laid- Open Publication No. Hei 8-26159 discloses an anchor member in which a heat-resistant block is provided with a hook member projecting from the surface thereof, and the hook member is fixed to the furnace wall inner surface by welding. A structure has been proposed in which a heat-resistant block is lined with a hook.
[0004]
JP-B-60-53270 discloses a heat-resistant block provided with a receiving member having a bolt hole, and a bolt inserted into the bolt hole of the receiving member in a threaded socket member fixed to the inner surface of the furnace wall by welding. A structure has been proposed in which the members are screwed together and the bolt member is tightened using a wrench member, thereby firmly lining the heat-resistant block.
[0005]
[Problems to be solved by the invention]
The former heat-resistant block furnace wall lining structure mentioned above is easy to attach the heat-resistant block itself, but in order to enhance the adhesion between the heat-resistant block and the furnace wall, a separate inorganic fiber is used as a backup material on the furnace wall inner surface. It has to be provided and covered, resulting in poor workability as a whole and high cost.
[0006]
On the other hand, the furnace wall lining structure of the heat-resistant block has the same problems as the former, and the structure is complicated, so that the cost is increased. Also, the workability when lining the heat-resistant block is poor.
[0007]
An object of the present invention is to provide a method for constructing a heat-resistant block that has solved the above-mentioned problems.
[0008]
[Means for Solving the Problems]
Construction method of heat block according to the invention, a large number of inorganic fiber blanket a method of constructing the heat block formed by laminating by penetrating the rod-like bracket, hook-like provided on the wall side to the blanket layered clearance of the heat block The heat-resistant block is pressed against the inner surface of the wall in a state where the receiving metal fitting is embedded, and in this state, the rod-shaped metal fitting in the heat-resistant block is supported by the hook-shaped receiving metal fitting, and the heat-resistant block is repelled from a compressed state. The gist of the present invention is to bring the furnace into close contact with the furnace wall by compressive elastic force .
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
As a preferred embodiment of the present invention, as shown in FIGS. 1 and 2, a heat-resistant block B is used in which a large number of inorganic fiber blankets 1 are passed through a rod-shaped metal fitting 2 and laminated and compressed. The heat-resistant block B is pressed against the inner surface of the furnace wall in a state where the hook-shaped receiving metal fitting 3 provided on the furnace wall A is sunk into the blanket gap, and in this state, the bar-shaped metal fitting 2 in the heat-resistant block is attached to the hook-shaped receiving metal fitting 3. The heat-resistant block is repelled from a compressed state, and is brought into close contact with the furnace wall by its compressive elastic force.
In this state, the rod-shaped metal fitting 2 is supported by the hook-shaped receiving metal fitting 3 while the heat-resistant block B is pressed against the furnace wall A, so that the block B is brought into close contact with the furnace wall A by its own compressive elastic force. It becomes.
[0010]
【Example】
1 and 2 show an embodiment of the present invention.
1 and 2, A is a furnace wall (iron shell), and B is a heat-resistant block lined with the furnace wall.
[0011]
The heat-resistant block B is obtained by penetrating a large number of inorganic fiber blankets 1 having excellent heat resistance, such as ceramic fibers, alumina fibers, and silica fibers, through the rod-shaped metal fittings 2 and compressing them. Although not shown in the drawings, a large number of blankets 1 stacked and compressed in this manner are, for example, abutted against a side plate of a material such as a corrugated cardboard or a plastic plate on both side end surfaces, and the whole is a string such as a plastic tape. Tighten tightly with the material and keep it compressed. These caul plates and cords are burned off and removed by high heat during furnace operation.
[0012]
On the other hand, a hook-shaped receiving metal member 3 is fixed to the inner surface of the furnace wall lined with the heat-resistant block B by welding at a base end thereof.
[0013]
FIG. 3 shows a construction procedure for lining the heat-resistant block B on the furnace wall A.
That is, as shown in FIG. 3A, the heat-resistant block B has its blanket lamination gap facing the furnace wall A, and the rod-shaped metal fitting 2 in the block is located at a position higher than the hook-shaped receiving metal fitting 3 on the furnace wall side. So to hold.
[0014]
Next, as shown in FIG. 3B, the heat-resistant block B is pressed against the inner wall of the furnace wall while the hook-shaped receiving metal fitting 3 on the furnace wall side is inserted into the blanket lamination gap of the heat-resistant block. At this time, the heat-resistant block B repels from the compressed state, and comes into close contact with the furnace wall by its compression elastic force.
Also, during the operation of the furnace, the string material that has tied up the entire heat-resistant block burns away, so that the entire heat-resistant block rebounds from the compressed state, and the state in which the heat-resistant block adheres to the furnace wall due to its compression elastic modulus has the above effect. In addition, it can be obtained even stronger.
[0015]
Next, the heat-resistant block B is lowered while being pressed against the furnace wall A, thereby supporting the rod-shaped metal fitting 2 in the heat-resistant block B so as not to come off from the hook-shaped receiving metal fitting 3.
[0016]
According to the furnace wall lining structure of the heat resistant block configured as described above, the following effects can be obtained.
1) The rod-shaped bracket in the heat-resistant block is supported by hooking a bar-shaped bracket in the heat-resistant block on the furnace wall side hooked into the gap of the blanket of the heat-resistant block. It can be pressed and held on the inner surface. Therefore, a backup material of inorganic fibers is not necessarily required on the inner surface of the furnace wall.
2) The structure of the heat-resistant block is simple.
3) The number of parts is small as a whole, and the reliability is high.
4) Workability is extremely easy.
[0017]
In the above embodiment, an example is shown in which one heat-resistant block is supported by one hook-shaped receiving member, but a structure in which a plurality of hook-shaped receiving members support the heat-resistant block may be adopted. According to this, the support stability of the heat-resistant block can be further improved.
[0018]
The blanket lamination joint may be filled with mortar or the like as necessary, or a mortar layer may be provided between the heat-resistant block and the furnace wall.
[0019]
【The invention's effect】
As described above, according to the method for constructing a heat-resistant block of the present invention , a wall lining structure of a heat-resistant block that can significantly reduce material costs and construction costs can be obtained.
The present invention is optimally applied to the furnace walls of various furnaces, but can be applied to walls requiring a heat-resistant structure in addition to the furnace walls.
[Brief description of the drawings]
FIG. 1 is a perspective view of a furnace wall lining structure of a heat-resistant block showing one embodiment of the present invention.
FIG. 2 is a cross-sectional view of FIG.
FIG. 3 is an explanatory view showing a procedure for lining a furnace wall of a heat-resistant block.
[Explanation of symbols]
A Furnace wall B Heat-resistant block 1 Blanket 2 Bar-shaped bracket 3 Hook-shaped bracket

Claims (1)

A method for constructing a heat-resistant block in which a large number of inorganic fiber blankets are pierced through a rod-shaped bracket and laminated, wherein a hook-shaped receiving bracket provided on a wall side is embedded in a blanket lamination gap of the heat-resistant block. The heat-resistant block is pressed against the inner surface of the wall, and in this state, the rod-shaped metal fitting in the heat-resistant block is supported by the hook-shaped receiving metal, and the heat-resistant block is repelled from a compressed state, and is brought into close contact with the furnace wall by its compression elastic force. A method of constructing a heat-resistant block characterized by the following.

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