JP2002071277A - Heat-resistant block and its formation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-resistant block for simplifying working efficiency for laminating a number of inorganic fiber blankets so that they can be retained in a compressed state. SOLUTION: In the heat-resistant block A where the inorganic fiber blanket 1 is laminated and is retained in a compressed state, a pin member C consisting of an axis section 4 having length being equivalent to the total compression length of the lamination blanket in a compressed state, and head sections 5 and 5 projecting in a radius direction from both the ends is used, and the lamination blanket is retained in a compressed state by the pin member C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an incinerator, a melting furnace,
The present invention relates to a heat-resistant block to be mounted on the inner surface of a furnace wall of various industrial furnaces such as a heating furnace or a heat treatment furnace, and furthermore, an improvement of a method of forming the heat-resistant block which is mounted on an inner surface of a wall requiring a heat-resistant structure.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned industrial furnace, in order to protect the steel shell forming the furnace wall, heat resistance of ceramic fiber, alumina fiber, silica fiber, etc. is applied to the inner surface of the furnace wall (steel shell). A heat-resistant block made by laminating excellent inorganic fiber blankets is installed as a lining material.

FIG. 9 shows a typical structure example of a conventional heat-resistant block. In the figure, A is a heat-resistant block,
Reference numeral 1 denotes a heat-resistant inorganic fiber blanket forming a heat-resistant block, and reference numeral B denotes a support bracket for skewering and integrating a large number of laminated blankets 1 and attaching the heat-resistant block itself to a furnace wall side. The laminated blanket 1 is held in a compressed state in the laminating direction by being tied using a flammable material backing plate member 2 and a cord member 3 such as a tape.

[0004] The heat-resistant block A holding the fiber blanket in a compressed state as described above is mounted side by side along the inner wall of the furnace wall. Then, it repels and comes into close contact with an adjacent block by its repulsive elastic force, thereby constituting a furnace wall.

[0005]

The heat-resistant block having the above structure has the following problems. A large amount of labor is required for maintaining the laminated blanket in a compressed state, resulting in poor workability. At the time of tying, the tying surface bulges, the overall shape becomes a drum shape, and a gap is formed at the joint during construction. When a plate-shaped heat-resistant block having a small thickness is manufactured, it is difficult to bind the heat-resistant block. The present invention has been made in order to solve the above problems, and has simplified the workability of laminating a large number of inorganic fiber blankets and holding them in a compressed state, and the heat-resistant block does not have a drum shape. Another object of the present invention is to provide a heat-resistant block which can be easily manufactured even with a thinner heat-resistant block, and a method for molding the same.

[0006]

To achieve the above object, a heat-resistant block according to the present invention is a heat-resistant block in which a large number of inorganic fiber blankets are laminated, and is flammable in the laminating direction of the laminated blanket. A large number of pin members made of a conductive material are penetrated, and each pin member has a shaft portion having a length corresponding to the total compression thickness of the laminated blanket in a compressed state, and a shaft from both ends of the shaft portion. And a head that protrudes in a vertical direction and suppresses repulsion of the laminated blanket in a compressed state.

Further, according to a method of forming a heat-resistant block according to claim 2, a large number of inorganic fiber blankets are laminated,
A pin member having a shaft portion having a length corresponding to a total compressed thickness when the laminated blanket is in a compressed state, and a head member protruding from both ends of the shaft portion in a direction perpendicular to the shaft, Using a hollow needle member for guiding the pin member through the laminated blanket, and a push rod member for pushing the pin member into the hollow needle member and inserting it.
After penetrating the hollow needle member into the compressed blanket in a compressed state, one head of the pin member is inserted from the rear end of the hollow needle member, and the head is hooked by the push rod member. The pin member is inserted into the hollow needle member and the head is pushed out from the tip of the hollow needle member, and then the hollow needle member is pulled out of the laminated blanket while leaving the pin member, and the shaft of the pin member and its shaft The gist is to hold the laminated blanket in a compressed state by the heads at both ends.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As a preferred embodiment of the present invention, as shown in FIG. 1, in a heat-resistant block A in which inorganic fiber blankets 1 are laminated, the total compression thickness of the laminated blanket in a compressed state is reduced. Using a pin member C consisting of a shaft portion 4 having a corresponding length and heads 5 and 5 projecting from both ends thereof in the radial direction, the pin member C is attached to the laminated blanket using a jig prepared separately. The laminated blanket is held in a compressed state by the shaft portion 4 and the heads 5 and 5 at both ends.

[0009]

1 to 3 show an embodiment of the present invention. In the figure, A is a heat-resistant block, 1 is an inorganic fiber blanket forming the heat-resistant block, and B is a support fitting. A large number of inorganic fiber blankets 1 are held in a compressed state by a large number of pin members C penetrating in parallel in the laminating direction of the blankets. The pin member C is made of a flammable material having excellent tensile strength and bending strength and having good moldability and workability, such as a synthetic resin material such as polypropylene and nylon.

FIGS. 3A and 3B show examples of the shape of the pin member C. FIG. These pin members C are composed of a shaft portion 4 having a required length and head portions 5 and 5 projecting from both ends thereof in the radial direction, and the shaft portion 4 has a length corresponding to the total compression thickness of the laminated blanket. The heads 5, 5 serve as stoppers for holding the laminated blanket in a compressed state in cooperation with the shaft 4.

The head 5 is not particularly limited in its shape as long as it can function as a stopper, but the pin member C is smoothly passed through the laminated blanket via a jig described later. Therefore, at least one of the heads 5 has a rod shape.

Next, a method of forming a heat-resistant block for holding a laminated blanket in a compressed state using the pin member C will be described.
This will be described with reference to FIGS. 4 to 7 and FIGS. In this molding method, the hollow needle member D and the push rod member E are used as jigs for penetrating the pin member C through the laminated blanket. The hollow needle member D is
The needle has an opening 6 formed by cutting off the tip of the needle at an angle, a slit 7 extending over the entire length, and a receiving port 8 provided on the peripheral surface of the rear part. The push bar member E is for inserting the pin member C into the hollow needle member D.

In order to hold the laminated blanket in a compressed state by using the pin member C, the hollow needle member D is passed through the laminated blanket 1 in a compressed state as shown in FIG. The rod-shaped head 5 of C is inserted toward the rear port 8 of the hollow needle member D.

Next, the rod-shaped head 5
After the pin member C is inserted into the hollow needle member D while the rod-shaped head 5 is pushed out from the tip of the hollow needle member D, the push rod member E is pulled back. Shaft 4
As shown in FIG. 8B, the head 5 at the rear end is put out of the slit 7 of the hollow needle member D.

Thereafter, the hollow needle member D is pulled out of the laminated blanket. At this time, the shaft portion 4 comes off the slit 7, and the pin member C remains on the laminated blanket. Thus, the operation of forming the heat-resistant block is completed. Here, the pressing force for sandwiching and compressing the laminated blanket from both sides (FIG. 8)
Even if the pressing force in the direction of the arrow in (a) and (b) is released, as shown in FIG.
Is held in a compressed state by the shaft portion 4 and the heads 5 and 5 at both ends thereof. The method of forming the heat-resistant block for holding the laminated blanket in a compressed state by the pin member is not limited to the method of the above-described embodiment, but may be implemented by other appropriate methods. Here, the example of the heat-resistant block in which the support fitting B is provided in a buried state is described. However, the heat-resistant block having the structure without the support fitting B or the heat-resistant block having another type of support fitting is also applicable. The invention is applicable.

Further, in order to prevent generation of dust, the laminated blanket may be wrapped with a resin film of polyethylene or the like, and fixed with the pin member of the present invention from above. Further, the blanket may be fixed by the pin member via an appropriate contact member in order to prevent the pin member from being entangled in the blanket.

[0017]

According to the present invention, the operation of holding the laminated blanket in a compressed state can be easily performed, and a heat resistant block can be obtained with high workability. In addition, since the laminated blanket is fixed at a partial portion by the pin member, the surface of the heat-resistant block does not swell, and the problem that a gap is formed at the joint during construction can be solved. Further, it becomes easy to produce a heat-resistant block having a small thickness. Further, it is possible to cope with a case where blankets having various shapes or shapes having an opening formed in the center are laminated and fixed, so that a heat-resistant block having an irregular shape can be easily manufactured. further,
Restoration can be easily performed by cutting the pin member after construction. Further, since the pin member can be driven into an arbitrary position, it is possible to easily fix the laminated blanket using the pin member, for example, even if a support fitting or the like is arranged inside the heat-resistant block.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a heat-resistant block showing one embodiment of the present invention.

FIG. 2 is a rear perspective view of the heat-resistant block.

FIG. 3 is a side view showing an example of the shape of a pin member.

FIG. 4 is a side view of the hollow needle member.

FIG. 5 is a bottom view of the hollow needle member.

FIG. 6 is a plan view of the hollow needle member.

FIG. 7 is a sectional view of the hollow needle member.

FIG. 8 is an explanatory view of a method of forming a heat-resistant block.

FIG. 9 is a partially cut perspective view of a conventional heat-resistant block.

[Explanation of symbols]

 Reference Signs List A Heat-resistant block B Support bracket 1 Inorganic fiber blanket 2 Patch plate material 3 String material C Pin member 4 Pin member shaft 5 Pin member head D Hollow needle member 6 Opening 7 Slit 8 Receptacle E Push rod member

Claims (2)

[Claims] 1. A heat-resistant block formed by laminating a large number of inorganic fiber blankets, wherein a large number of pin members made of a flammable material penetrate in the laminating direction of the laminated blanket, and each pin member is compressed. A shaft having a length corresponding to the entire compressed thickness of the laminated blanket, and a head projecting from both ends of the shaft in a direction perpendicular to the axis to suppress the repulsive force of the laminated blanket in a compressed state. And a heat-resistant block. 2. Laminating a large number of inorganic fiber blankets,
A pin member having a shaft portion having a length corresponding to a total compressed thickness when the laminated blanket is in a compressed state, and a head member protruding from both ends of the shaft portion in a direction perpendicular to the shaft, Using a hollow needle member for guiding the pin member through the laminated blanket, and a push rod member for pushing the pin member into the hollow needle member and inserting it.
After penetrating the hollow needle member through the laminated blanket in a compressed state, one head of a pin member is inserted from the rear end of the hollow needle member, and the head is hooked by the push rod member. The pin member is inserted into the hollow needle member and the head is pushed out from the tip of the hollow needle member, and then the hollow needle member is pulled out of the laminated blanket while leaving the pin member, and the shaft portion of the pin member and its shaft A method of forming a heat-resistant block, wherein a laminated blanket is held in a compressed state by heads at both ends.