JPH10246422A - Structure and method for covering construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the resistance of a covering structure of a construction to corrosive atmosphere and a high-temperature environment by providing a plate-shaped member constituted of a carbon-fiber-reinforced carbon composite material formed of a reinforcing member made of carbon fibers and support means for supporting the plate-shaped member on a covering surface being the surface of the construction to be covered. SOLUTION: A covering structure 101 of the inner wall of a funnel is equipped with a covering board 11, a joining bolt 21 and a joint covering member 31 and it is so fitted as to cover the whole surface of the inner wall surface W of the funnel being the inner surface of the funnel C shaped like a cylindrical conduit. The inner wall surface W of the funnel is constructed of a continuously placed concrete surface or by laying blocks of ceramic or the like in layers. The covering board 11 is constituted of a carbon-fiber-reinforced carbon composite material formed by providing a fiber member constituted of carbon C in a base material constituted of the carbon C and it is formed in the shape of a plate, while the joining bolts 21 in appropriate numbers are provided near the edge thereof. When these items are used for the covering structure, according to this constitution, the cost of maintenance of the construction can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for covering a structure using a plate-like member made of carbon fiber reinforced carbon composite material,
More particularly, the present invention relates to a coating structure and a coating method suitable for coating an inner surface or an outer surface of a structure in a corrosive atmosphere or a high-temperature environment.

[0002]

2. Description of the Related Art Conventionally, in boilers, thermal power plants, waste incineration plants and the like, coal, liquefied natural gas (LN
G) Burning various fuels such as heavy oil or incinerating various wastes to obtain thermal energy and dispose of wastes. However, depending on the components of the fuel or waste to be burned or incinerated, corrosive components are generated after the combustion and are mixed into the exhaust gas to form a smoke-like gas. For example, when the fuel is heavy oil, because it contains sulfur, sulfur dioxide (SO ₂₎ is generated in the exhaust gas after combustion. Further, when the fuel is coal, hydrogen fluoride gas (HF) may be generated in the exhaust gas after combustion. And
When vinyl chloride is contained in the waste, hydrogen chloride (HCl) is generated in the exhaust gas after combustion.

The sulfurous acid (SO 2) generated as described above
₂ ) The gas is further oxidized to sulfuric anhydride (SO ₃ ) and, when combined with water (H ₂ O), becomes sulfuric acid (H ₂ SO ₄ ). Hydrogen fluoride (HF) becomes hydrofluoric acid when combined with water (H ₂ O). In addition, hydrogen chloride (HC
l) becomes hydrochloric acid when combined with water (H ₂ O). All of these are strong acids with high chemical reactivity, and if they adhere to the inner wall of a flue such as an exhaust gas pipe or a chimney, they will cause a violent chemical reaction with the inner wall material, possibly causing "corrosion" to the inner wall material. There is.

For this reason, conventionally, measures have been taken to cover the inner wall of a flue or the like with a lining material made of a material having high corrosion resistance. As such a “lining” structure, various types of blocks or tiles made of concrete or ceramics are attached or stacked on the inner wall of the flue, or an acid-resistant enamel, water glass (sodium silicate: Na ₂ SiO ₃ ) or the like to coat the flue inner wall, or fiber reinforced plastics (FRP:
A fiber lining material made of Fiber Reinforced Plastics) has been used on the inner wall.

[0005]

However, in the above-mentioned conventional flue, etc., in addition to the corrosive atmosphere,
The temperature of the exhaust gas was also high, sometimes reaching several hundred degrees Celsius. For this reason, in the case of the conventional lining material, any of the materials, the synergistic effect of corrosion and high temperature causes severe deterioration such as cracking and spalling, and requires inspection and repair every predetermined period. For example, the “Standards for Chimney Structure Design and Construction” (November 2, 1982)
0th day, publisher: Nippon Building Center, supervision: Ministry of Construction, Housing Bureau, Building Guidance Section), "(5) Maintenance / Inspection (pages 22 to 22 of the above guidelines) in" 2.1 Common Items " 24
Page) ”,“ Table 2.1-3 Inspection Items ”specifies“ inspection time ”as“ in principle, once every two years ”.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a coating structure for a building having a high resistance to a corrosive atmosphere or a high-temperature environment, and a method for coating the building. Is to provide.

[0007]

In order to solve the above problems, a coating structure of a structure according to the present invention is formed by disposing a carbon fiber reinforcing member made of carbon fiber in a base material made of carbon. A plate member made of carbon fiber reinforced carbon composite material, and support means for supporting the plate member on a coating surface which is a surface of a building to be coated.

[0008] In the above-mentioned structure for covering a structure, preferably, the plate-shaped member is a single sheet-shaped member formed by woven or entangled carbon fibers, or a plurality of the sheet-shaped members are laminated. The reinforcing member made of carbon fiber is pressurized at a predetermined pressure while being heated at a first temperature, is subjected to a molding process, and then is heated at a second temperature to be subjected to a carbonizing process. Is formed at a third temperature in accordance with the above-mentioned temperature, thereby performing a graphitization process.

In the above-mentioned structure for covering a building, preferably, the covering surface includes at least a part of a curved surface, and the plate-like member may be in a specific direction of a developing direction of the surface of the sheet. The bending strength in the bending direction is configured to be lower than the bending strength in the other directions, and the bending strength can follow the curved surface.

[0010] In the above-mentioned construction covering structure, preferably, the supporting means includes any one of an adhesive and a mechanical connector, or an appropriate combination thereof, and directly connects the plate-like member to the covering surface. It has joining means for joining directly or indirectly.

In the above-mentioned structure for covering a building, preferably, the supporting means includes a base member fixed to the covering surface and the plate-like member in a state where at least a part of the covering surface can be covered. The frame-shaped member is attached and attached to the base member, and the plate-shaped member is previously attached to the frame-shaped member to form a covering unit, and the covering unit is attached to the base member.

Further, in the above-mentioned structure covering structure, preferably, the support means has a seam covering member for covering the covering surface in a seam portion formed between the adjacent plate-like members.

In the above-mentioned structure for covering a structure, preferably, the structure is formed in a substantially pipe-like shape or a substantially chamber-like shape, and the covering surface is an inner surface of the structure, and
The plate-shaped member is a gas to be protected including a corrosive component or high-temperature smoke, which flows inside the structure or comes into contact with the gas to be protected staying inside the structure.

Further, in the above-mentioned structure for covering a building, preferably, at least the plate-like member is used within a temperature range from room temperature to 650 degrees Celsius.

[0015] The method of coating a structure according to the present invention comprises:
A plate member made of carbon fiber reinforced carbon composite material formed by disposing a carbon fiber reinforced member made of carbon fiber in a base material made of carbon is supported on a coating surface which is a surface of a building to be coated. It is characterized by being supported by means.

[0016]

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

(1) First Embodiment FIG. 1 is a view showing a configuration of a chimney inner wall coating structure according to a first embodiment of the present invention, and FIG. 1 (A) shows an entire configuration of the chimney inner wall coating structure. 1B is a partially cutaway perspective view, FIG. 1B is an enlarged side view of a portion where the covering board is joined to the chimney inner wall surface, and FIG. 1C is a portion where the covering board is joined to the chimney inner wall surface. Are respectively shown in enlarged cross-sectional views.

As shown in FIGS. 1A to 1C, this chimney inner wall covering structure 101 is provided with a covering board 11, a joining bolt 21, and a joint covering member 31, and has a substantially cylindrical shape. It is attached so as to cover the entire surface of the chimney inner wall surface W which is the inner surface of the pipe-shaped chimney C. Chimney inner wall surface W
Are constructed by stacking blocks made of continuous concrete or ceramics.

The above-mentioned coated board 11 is a carbon fiber reinforced carbon composite material (hereinafter referred to as "C / C") formed by disposing a fiber member made of carbon (C) in a base material made of carbon (C). This is called a “composite.” The details will be described later.), And is formed in a rectangular or square plate shape. In the vicinity of the edge of the covering board 11, a bolt hole 11a in which a female screw into which the joining bolt 21 can be screwed is formed.
Are set up at appropriate places in appropriate numbers.

The joining bolt 21 is made of a C / C composite, and has a substantially hexagonal column-shaped head portion 21a and a shaft portion 21b having a male screw formed on an outer surface. The joint covering member 31 is made of a C / C composite, and is formed in an elongated plate shape. In this seam covering member 31,
An appropriate number of bolt holes 31a in which female screws into which the joining bolts 21 can be screwed are formed at appropriate locations.

Next, a method of applying the chimney inner wall covering structure 101 will be described. First, a bolt hole H1 is formed in the chimney inner wall surface W. On the inner wall surface of the bolt hole H1, a female screw into which the above-mentioned joining bolt 21 can be screwed is formed (see FIG. 1C). Next, the seam covering member 31 is applied to the chimney inner wall surface W, and the covering board 11 is further applied to the seam covering member 31 so as to conform to the curvature of the substantially cylindrical chimney inner wall surface W. Bending, bolt holes H1,3
After adjusting so that 1a and 11a are coaxial, the joining board 21 is screwed in to fix the covering board 11 on the chimney inner wall surface W. At this time, the bolt holes 31a of the joint covering member 31 are arranged so that the edges of the adjacent covering boards 11 are located substantially near the center of the joint covering member 31.

Next, the operation of the chimney inner wall covering structure 101 will be described. As described above, in the chimney inner wall covering structure 101, the entire surface of the chimney inner wall surface W is covered with the C / C composite covering board 11. C / C composite is a carbon matrix (substrate or matrix)
The reinforcing member is a fiber member including carbon fiber (carbon fiber), a tape-like member made of carbon fiber, a sheet-like member, a woven fabric member woven of carbon fiber, or a non-woven fabric member made of carbon fiber. It is a composite material formed by providing.

Thus, the C / C composite, like carbon itself, is very chemically stable and hardly corroded by other substances. For this reason, it has high corrosion resistance to corrosive gas such as smoke passing through the chimney, and has less corrosion than the conventional chimney inner wall material.
It takes a long time to produce the same level of corrosion.

Further, the C / C composite has high strength and toughness without being brittle like graphite alone because carbon is reinforced by a fiber member, and has a high temperature (for example, 2000 ° C. or higher). ) Does not decrease its strength. Furthermore, the C / C composite can withstand rapid heating and cooling, and can be used without any problem even under severe fluctuations in temperature conditions. In addition, the C / C composite has a small coefficient of thermal expansion and a small distortion due to a temperature change. Therefore, it has high heat resistance in a high-temperature environment such as in a chimney, is less damaged by heat than a conventional chimney inner wall material, and has a longer period of time until the same degree of thermal damage occurs.

In particular, when a flexible C / C composite sheet described later is used as a material for the covering board, the sheet is more flexible than a sheet made of another C / C composite. For this reason, even in the case of a chimney having a circular cross section, it is easy to bend following the curved surface shape, and there is no risk of breakage due to bending.

The C / C composite is lighter than the conventional lining material. For this reason, it can be easily attached to the inner wall of the chimney, the load applied to the chimney main body is not large, and the influence on the strength of the chimney main body is small.

In the above-described chimney inner wall coating structure 101, only the C / C composite coating board 11 and the joining bolts 21 are exposed on the side that comes into contact with the chimney exhaust gas. These are entirely covered with these. Further, a seam covering member 31 is disposed below the board seam J1 between the adjacent covered boards 11 (see FIG. 1C).

Therefore, even if the chimney exhaust gas is corrosive or high temperature, the cover board 11 and the joining bolt 21 do not corrode due to the advantage of the C / C composite described above. Further, the chimney inner wall surface W is covered by the covering board 11 and the joining bolts 21. Even if there is a gap between the board joints J1 of the adjacent covering boards 11, the seam covering member 31 is disposed below the joint J1. ing.
Therefore, the chimney inner wall surface W does not come into contact with the chimney exhaust gas, so that the chimney inner wall surface W is not affected by corrosion or the like. Also, the seam covering member 31 does not cause corrosion or the like even if the chimney exhaust gas is corrosive or high temperature due to the advantages of the C / C composite.

A modification of the chimney inner wall covering structure 101 of the first embodiment will be described below with reference to FIG. FIG. 2 is a diagram showing a configuration of a variation of the chimney inner wall covering structure of the first embodiment of the present invention shown in FIG. First, FIG. 2A is a cross-sectional view illustrating a configuration of an example of the seam covering member when the inner wall surface of the chimney is bent at a substantially right angle.

As shown in the figure, when the chimney (not shown) is formed in a substantially rectangular cylindrical shape, the chimney inner wall surface W 'has a gently curved surface like the above-described substantially cylindrical surface. There is an approximately right-angled slightly steep bent portion different from that of FIG. For such a substantially right-angled bent portion, a seam covering member 31A as shown in the figure is used. This seam covering member 31A is made of a C / C composite, is formed in a bent shape as shown in the figure, and has an appropriate number of bolt holes 31b formed with female screws that can be screwed into the joining bolts 21 at appropriate positions. Have.

Next, a description will be given of a construction method of a modification of the chimney inner wall covering structure 101 shown in FIG. First, a bolt hole H1 'having a female screw is formed in the chimney inner wall surface W'. Next, the seam covering member 31A is placed on the chimney inner wall surface W '.
, And the covering board 1 is further placed on the seam covering member 31A.
1 and adjusting the bolt holes H1 ', 31b, and 11a to be coaxial, and then screwing the joining bolt 21, thereby fixing the covering board 11 on the chimney inner wall surface W'. In this way, as in the case shown in FIG. 1C, the chimney inner wall surface W 'does not come into contact with the chimney exhaust gas, and the chimney inner wall surface W' is not affected by corrosion or the like.
In addition, even if the chimney exhaust gas is corrosive or has a high temperature, the seam covering member 31A is not corroded due to the advantage of the C / C composite.

Further, the covering board 11 is formed by using a seam covering member 31B having another structure as shown in FIG.
It can be fixed to a chimney inner wall surface W having a substantially circular cross section as shown in FIG. As shown in FIG.
1B is formed of a C / C composite and has an upper flange 3
It has a substantially “H” -shaped cross section having 1c, a web 31d, and a lower flange 31e, and has a beam-like configuration extending from the near side to the far side of the paper surface of FIG. 2B. Also,
The upper flange 31c and the lower flange 31e are provided with appropriate numbers of bolt holes 31f and 31g formed with female threads into which the above-described joining bolts 21 can be screwed. Also, the lower surface of the upper flange 31c and the lower flange 3
The distance from the upper surface of 1e is set to a value slightly larger than the thickness of the covering board 11.

Next, a description will be given of a construction method of a modification of the chimney inner wall covering structure 101 shown in FIG. Using the seam covering member 31B having the above-described configuration, the lower flange 31e of the seam covering member 31B is put on the chimney inner wall surface W, and the covering board 1 is placed between the upper and lower flanges of the seam covering member 31B.
1 and the bolt holes H1, 31g, 11a and 31f are adjusted so as to be coaxial.
By screwing the coating board 11, the coating board 11
Can be fixed on top.

In this way, for example, even when the radius of curvature of the cylindrical surface of the substantially cylindrical chimney inner wall surface W is small and the chimney inner wall surface W is sharply bent, the gap between the upper and lower flanges of the seam covering member 31B can be reduced. The edge of the covering board 11 can be held by a "face" instead of a "point" as shown in FIG. Therefore, stress does not concentrate near the joining bolt 21, and the risk of damage such as cracking of the covering board 11 can be avoided.

In the case where the joint between the edges of the covering board 11 is connected by the joint covering member 31B described above, the joint covering member 31C as shown in FIG. The members 31B are separated from each other by
Can also be connected at the corners of. As shown in the figure, the connecting member 31C is formed of a C / C composite, and has a substantially square upper flange 31h and a substantially “+”.
It has a U-shaped web 31i and a substantially square lower flange (not shown), and has a substantially "H" -shaped cross section. Further, in the upper flange 31h and the lower flange, an appropriate number of bolt holes 31k and the like into which the above-described joining bolts 21 can be screwed are provided at appropriate locations. Also, the upper flange 31
The distance between the lower surface of h and the upper surface of the lower flange is the
It is set to a value slightly larger than the thickness of 1.

Next, a description will be given of a construction method of a variation of the chimney inner wall covering structure 101 shown in FIG. Using the seam covering member 31C having the above-described configuration, a lower flange (not shown) of the seam covering member 31C is put on the chimney inner wall surface W, and a corner of each of the covering boards 11 is placed between upper and lower flanges of the seam covering member 31C. Insert around the corner and tighten the bolt holes H1,
31k, etc., and 11a are adjusted to be coaxial, and then the joining bolt 21 is screwed in.
Can be fixed on the chimney inner wall surface W.

In this way, the chimney inner wall surface does not come into contact with the chimney exhaust gas even at the corners of each coating board 11, and the chimney inner wall surface is not affected by corrosion or the like. In addition, even if the stack exhaust gas is corrosive or high temperature, the connection member 31C does not cause corrosion or the like due to the advantage of the C / C composite.

(2) Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a side view showing an overall configuration of a chimney inner wall covering structure according to a second embodiment of the present invention.
FIG. 4 is a diagram showing a more detailed configuration of the chimney inner wall covering structure of the second embodiment of the present invention shown in FIG.
4A is a partial cross-sectional view showing the relationship and configuration of a chimney inner covering structure, a covering unit, and a chimney inner wall surface, and FIG. 4B is a perspective view showing the configuration of a frame used for the covering unit. .

As shown in FIG. 3, in the chimney inner wall coating structure 102 of the second embodiment, a coating unit 62 manufactured in advance is attached to a chimney inner wall surface W which is an inner surface of a substantially pipe-shaped chimney C by an anchor 52. The base member 42 made of steel or the like fixed by the above is joined by mounting bolts 72 made of steel or the like, and a plurality of the members are mounted in the chimney axial direction.

The above-described covering unit 62 includes the covering board 12, the joining bolts 22, the seam covering member 32, and the frame 33, is formed in a substantially cylindrical shape, and covers the entire surface of the substantially cylindrical chimney inner wall surface W. It is attached to be.

The above-mentioned covering board 12 is made of a C / C composite and is formed in a rectangular or square plate shape. In the vicinity of the edge of the covering board 12, a joining bolt 2
An appropriate number of bolt holes 12a in which female screws into which the screws 2 can be screwed are formed are provided at appropriate locations (see FIG. 4A).

The joining bolt 22 is made of a C / C composite, and has a substantially hexagonal column-shaped head and a shaft having a male screw formed on the outer surface (see FIG. 4A). . The seam covering member 32 is made of a C / C composite, and is formed in an elongated plate shape. This seam covering member 3
2, a suitable number of bolt holes 32a into which the joining bolts 21 can be screwed are provided at appropriate places (see FIG. 4A).

As shown in FIG. 4B, the frame 33 is made of steel or the like, and connects the annular upper ring portion 33a, middle ring portion 33b, and lower ring portion 33c with each other. It has a vertical connecting portion 33d which is a plurality of vertical members. In addition, each of the ring portions 33a to 33c
The bolt holes 33e into which the above-mentioned joining bolts 22 can be screwed in the horizontal direction are provided at appropriate positions. Further, in each of the ring portions 33a to 33c, an appropriate number of bolt holes 33f capable of vertically screwing a mounting bolt 72 to be described later are provided at appropriate positions.

As shown in FIG. 4A, the anchor 52 is a metal-expandable anchor composed of an anchor body 52a made of metal or the like and a mandrel 52b. The anchor main body 42a is a substantially cylindrical member, and a plurality of slit-shaped cuts are provided at the distal end thereof along the longitudinal direction of the cylinder. The diameter of the tip of the mandrel 52b is larger than the diameters of the other rods.

As shown in FIG. 4A, the base member 42 is a partially circular or annular member made of steel or the like. The base member 42 has a substantially “L” -shaped cross section, and one of the perpendicular portions is a chimney fixing flange 42 a and the other is a unit mounting flange 42.
C. The chimney fixing flange 42a has
An opening 42b is provided. In the unit mounting flange 42c, an appropriate number of bolt holes 42d having an internal thread into which the mounting bolt 72 can be screwed are formed at appropriate locations. Also, a base member 42 'having no bolt hole 42d is prepared.

Next, a method of applying the chimney inner wall covering structure 102 will be described. First, an anchor hole H2 (see FIG. 4A) having the same diameter as or slightly smaller than the outer diameter of the anchor main body 52a is drilled in the chimney inner wall surface W using a drill (not shown) or the like. Next, on the inner wall W of the chimney,
The second chimney fixing flange 42a is applied to adjust the opening 42b of the chimney fixing flange 42a to be coaxial with the anchor hole H2, and the anchor main body 52a is inserted into the opening 42b of the chimney fixing flange 42a and set. Thereafter, the mandrel 52b is driven into the anchor main body 52a with a hammer or another hitting tool. Thereby, the anchor body 52
The leading end of a is pushed and expanded by the enlarged diameter portion at the leading end of the mandrel 52b, and bites into the hole wall of the anchor hole H2. Thus, the base member 42 is fixed to the chimney inner wall surface W (FIG. 4).
(A)). Similarly, the base member 42 'having no bolt hole 42d is also fixed to the chimney inner wall surface W. These base members 42 and 42 'are arranged alternately in the extending direction of the chimney (see FIG. 3).

Next, the coating unit 62 is suspended from above the chimney by a crane (not shown) or the like, and the upper ring portion 33a of the frame 33 is positioned on the unit mounting flange 42c of the base member 42, and Foundation member 42 '
Is adjusted so that the lower ring portion 33c of the frame 33 is located above the unit mounting flange 42c. Next, the bolt holes 42d of the base member 42 and the bolt holes 33f of the upper ring portion 33a of the frame 33 are adjusted to be coaxial.
Thereafter, the covering unit 62 is attached to the base member 42 by screwing the mounting bolts 72 into the bolt holes 33f provided in the upper ring portion 33a and the bolt holes 42d provided in the unit mounting flange 42c.

Subsequently, the chimney inner wall surface W is sequentially covered with the plurality of covering units 62 by the same procedure as described above. At this time, as shown in FIG.
A joint covering member 82 made of a C / C composite is disposed inside the joint J2 between the two units, and a joining bolt 92 made of a C / C composite and a joint covering member 8 are formed.
2, a bolt hole 82a provided with a female screw formed in the cover board 12 and a female screw formed in the cover board 12.
b, the joint is formed by screwing a bolt hole 32b provided in the seam covering member 32 and formed with a female screw.
The seam covering member 82 is formed in an elongated plate shape by a flexible C / C composite sheet to be described later, and the surface of the sheet is developed so as to be easily bent in the circumferential direction of each of the ring portions 33a, 33b, and 33c of the frame 33. The internal carbon fiber reinforced member is configured such that the bending strength in a flexible direction, which is a specific one of the directions, is lower than the bending strength in other directions.

The chimney inner wall covering structure 102 has the same function as the chimney inner wall covering structure 101 of the first embodiment. Furthermore, by unitizing, the coating unit 62 may be manufactured in advance in a factory or the like, and the coating unit 62 may be fixed at the site. This has the advantage that the construction period can be significantly reduced.

Even if there is a gap in the unit seam J2, the seam inner wall W does not come into contact with the chimney exhaust gas due to the seam covering member 82, so that the chimney inner wall W is not affected by corrosion or the like. Also, the seam covering member 82 does not corrode due to the advantage of the C / C composite even if the chimney exhaust gas is corrosive or high temperature.

Next, the above-mentioned covering boards 11 and 12
Joining bolts 21, 22 and seam covering members 31, 32, 8
A more detailed configuration of the C / C composite as the material No. 2 and a method for manufacturing the same will be described below.

First, regarding the configuration of the C / C composite, “one-way material” and “one-way material” depend on the extending direction of carbon fibers in the carbon fiber reinforcing member made of carbon fibers provided in the matrix made of carbon. Bidirectional material "and" isotropic material ".

The above-mentioned unidirectional material is one in which the extending direction of the carbon fibers is aligned in one direction, and has a very high strength in the extending direction of the carbon fibers. In order to form such a unidirectional material, a unidirectional carbon fiber reinforced member such as a tape-like member or a sheet-like member formed by arranging carbon fibers in parallel is arranged alone in a carbon matrix. Alternatively, a plurality of the above unidirectional carbon fiber reinforced members are laminated so as to have the same carbon fiber direction and arranged in a carbon matrix.

The two-way material is one in which the carbon fibers extend in two different directions. Although the two extending directions can be any directions, particularly, they are often arranged so as to be orthogonal to each other. In this two-way material, the strength in each direction is determined by the amount of carbon fibers arranged in each direction and the like. Generally, the strength in one direction is excellent, but the amount of carbon fibers is appropriately adjusted. In this case, the strength in both directions can be made equal. In order to form such a two-way material, a method of laminating a plurality of the unidirectional carbon fiber reinforcing members such that the carbon fiber extends in two predetermined directions and arranging the members in a carbon matrix is described. And a method of forming a woven cloth-like bidirectional carbon fiber reinforced member by plain weaving the carbon fibers in two predetermined directions to each other, and arranging them in the carbon matrix as a single body or a laminate.

The isotropic material is one in which the extending direction of the carbon fiber is random. Further, the random direction may be two-dimensionally random or three-dimensionally random. In this isotropic material, the strength in each direction is determined by the amount of carbon fibers arranged in each direction and the like. Generally, the strength in either one direction is excellent, but the amount of carbon fibers is appropriately adjusted. If adjusted, it is possible to obtain an isotropic material having the same strength in any three-dimensional directions. In order to form such an isotropic material,
There is a method in which carbon fibers are randomly entangled to form a reinforcing member made of a nonwoven fabric (felt shape) made of isotropic carbon fiber and arranged in a carbon matrix as a single body or a laminate.

Among the carbon fiber reinforced members made of carbon fibers as described above, those in which a sheet-like unidirectional carbon fiber reinforced member (hereinafter, referred to as a “preformed sheet”) is laminated are laminated. By changing the fiber direction of at least one of the plurality of preformed sheets from the other, or by arranging the preformed sheet in the laminate of the nonwoven sheet member, it is possible to specify the direction of development of the sheet surface. The bending strength in the flexible direction, which is the direction of, is configured to be lower than the bending strength in the other direction,
A “flexible C / C composite sheet” having high flexibility in a specific direction can be formed. If the flexible C / C composite sheet is used for a covering board that covers a curved surface such as a chimney inner wall having a circular cross section, it can be bent and deformed to follow the shape of the chimney inner wall, and has a small curvature. Then there is no destruction.

The carbon fiber used for the carbon fiber reinforced member is a PAN (polyacrylonitrile), coal (coal tar) pitch, petroleum pitch or the like as a precursor, and a cross-linked structure by air oxidation for stabilization. Process, a carbonization process, and a product produced by performing a graphitization process, a glassy carbon fiber produced by spinning, curing, and carbonizing a thermosetting resin, and a vapor phase grown from vapor phase carbon. Growth carbon fiber (VGCF) or the like can be used.

The method for producing the C / C composite includes “hot pressing method”, “impregnation method”, and “CVD method”.
Etc. can be adopted. The “hot press method” means that a carbon fiber reinforced member made of carbon fiber is laminated, and then heated to a first temperature (for example, about 300 to 900 ° C.) by a hot press and a predetermined pressure (for example, normal pressure to 300kg /
cm ² ) to perform a molding process, and heat to a second temperature (for example, about 700 to 1200 ° C.) to carbonize.
Thereafter, if necessary, a third temperature (for example, about 1
(About 500 to 3000 ° C.) for graphitization. The `` impregnation method '' means that a carbon fiber reinforced member made of carbon fiber is molded and carbonized, and then impregnated with pitch.
This is a method of graphitizing after repeating the carbonization step. The “CVD method” is a method in which a carbon fiber reinforced member made of carbon fiber is formed and carbonized, and then carbon from a hydrocarbon-based gas is deposited on the surface by CVD (chemical vapor deposition).

In the above description, the chimney inner wall covering structure 1
01 and 102 correspond to the covering structure of the building. The covering boards 11 and 12 correspond to plate members. The chimney C corresponds to a building, and the chimney inner wall surface W corresponds to a surface of the building. Further, the joining bolt 21 and the joint covering member 31, the joining bolt 21 and the joint covering member 31A, the joining bolt 21 and the joint covering member 31B, the joining bolt 21 and the joint covering member 31B and the connecting member 31C, or the joining bolt 22 and the frame 33 are formed. The mounting bolt 72, the base member 42, and the anchor 52 correspond to supporting means. Further, the joining bolts 21 and 22 correspond to joining means or a mechanical joining tool. The frame 33 corresponds to a frame member. The chimney exhaust gas such as smoke passing through the chimney C corresponds to the gas to be protected.

The present invention is not limited to the above embodiments. Each of the above-described embodiments and each of the following examples are exemplifications, and those having substantially the same configuration as the technical idea described in the claims of the present invention and exhibiting the same function and effect are described below. Anything is included in the technical scope of the present invention.

For example, in each of the embodiments described above, the chimney is taken as an example of the structure, but the present invention is not limited to this. Buildings including facilities, bridges or tunnels, or civil engineering structures including facilities for disaster prevention, etc. Or a container including a container for storing gas or a container for storing various devices, a line including a line for transferring or discharging various liquids or gases, or a room provided in various factories or facilities or various structures or civil engineering structures. Cavities excavated in rock, etc., as space for electricity, power-related facilities, space for storing various objects, etc., or an appropriate combination of these. It may be equal. The surface to be coated may be not only the inner surface but also the outer surface of the building.
Further, the environment inside the structure may be a corrosive atmosphere or a high temperature environment. The structure to be covered may be an existing structure that has already been constructed, or may be a newly constructed structure that is newly constructed at about the same time as the covering structure.

Therefore, a structure (hereinafter referred to as a “smoke-related structure”) through which a gas to be protected containing a corrosive component or high-temperature smoke is passed (hereinafter referred to as “smoke-related structure”) is described in each of the above embodiments. In addition to the chimney,
The so-called "flue" is also included. Also, smoke related structures
It is not limited to a substantially pipe-like structure such as a chimney or a chimney, and may have another structure, for example, a substantially chamber-like structure. Furthermore, in addition to the structure in which the gas to be protected including smoke is guided to another place by flowing inside the smoke-related structure or discharged to the outside, the gas to be protected is temporarily or temporarily stored inside the smoke-related structure. It may be configured to stay for a period.

Further, in each of the above embodiments, the joint bolt and the seam covering member have been described as examples of the support means. However, the present invention is not limited to this, and it is the surface of the building to be covered. Any structure may be used as long as it supports the plate-shaped member on the covering surface, and other forms and structures of support means, such as bolting the plate-shaped member directly to the covering surface without using a seam covering member It may be a structure to be joined by a mechanical joining tool including an adhesive or an adhesive.

Alternatively, the support means may support the plate-like member on the covering surface by other mechanical action or mechanical force, in addition to “screw-in” by a bolt or an anchor. For example, engagement, locking, fitting, gripping, winding,
It may be nailed, clipped, tied with a wire or the like, suspended by a chain (chain-like member or rope-like member), or the like. Further, it may be a supporting means for supporting by utilizing elastic force, plastic deformation by caulking or the like, magnetic force, electrostatic force, negative pressure by air suction, and the like. Further, an appropriate combination of these may be used.

In the above description, the means for supporting the existing building on the covering surface has been described. However, when the construction is to be carried out at substantially the same time as the construction of the new construction, the construction In the case of constructing a structure with reinforced concrete, for example, one end of one of the reinforcing bars is projected from the covering surface, and this reinforcing bar end is used as a support means, and the plate member is supported on the covering surface. Is also good. Furthermore, concrete is cast in such a manner that one end of a metal fitting or the like is embedded in the concrete in addition to the reinforcing bar end, and the other end of the metal fitting is used as a support means to support the plate member on the covering surface. You may do so. When the covering surface is formed by stacking the block-shaped members, a hook-shaped member or a metal fitting is formed so as to protrude on the covering surface side of a specific block-shaped member among these block-shaped members. The plate-shaped member may be supported on the covering surface by using the protruding portion or the vicinity of the protruding end of the metal fitting as the support means.

As shown in FIG. 5A, a covering board 13 which is a plate-like member made of a C / C composite is covered with a “roof material” on a covering surface such as the chimney inner wall surface W. It may be installed as follows. In this case, while sequentially overlapping both ends of the covering board 13 adjacent to each other,
By screwing bolt holes H3 formed in appropriate numbers at appropriate locations on the chimney inner wall surface W serving as a coating surface, bolt holes 13a and 13b provided in the coating board 13, and joining bolts 23 made of a C / C composite. It is fixed to the chimney inner wall surface W. As shown in FIG. 5 (A), the direction in which the covering board 13 is overlapped with the gas G such as smoke progressing in the direction of the leftward arrow in the drawing is the covering board 13.
Are set not to face each other. With this configuration, even if corrosive gas is contained in the smoke or the like, it does not directly enter the inside of the overlapped portion of the covering board 13, and the chimney inner wall surface inside the covering board 13 does not. W can be protected from corrosive gas.

In addition to the plate-like seam covering member 31 having a substantially “-” cross section shown in FIG.
As shown in (B), a seam covering member 34 made of a C / C composite and having a substantially “convex” cross section may be used. This seam covering member 34 is formed of an elongated plate-shaped substrate 34.
A projection 34b is formed at the center of the upper surface of a. In this case, the seam covering member 34 includes a bolt hole H4 formed in an appropriate number on a chimney inner wall surface W as a covering surface, a bolt hole 34c provided in the seam covering member 34, and a plate-like member. The covering board 14 is fixed to the chimney inner wall surface W by screwing a bolt hole 14a provided in a certain covering board 14 and a joining bolt 23 as joining means. With this configuration, even if there is a gap between the covering board 14 and the projecting portion 34b of the seam covering member 34, the substrate 34a of the seam covering member 34 is disposed below the seam. Since W does not come into contact with the chimney exhaust gas, there is no influence of the corrosive gas in the chimney exhaust gas on the chimney inner wall surface W.

Alternatively, as shown by reference numeral 82 in FIG. 4A, a surface opposite to the chimney inner wall surface W which is a coating surface of the coating board 12 which is a plate-like member (a side which contacts the chimney exhaust gas). A surface covering member may be attached to the joint surface to cover the gap between the joints, and the joint covering member may be fixed to the covering surface with a mechanical joining tool including a joining bolt as an joining means, an adhesive, or the like. With this configuration, even if there is a gap between the adjacent plate-like members, the joint covering member is disposed above the joint, so that the covering surface is in contact with the chimney exhaust gas or the like. There is no influence of the corrosive gas in the chimney exhaust gas on the coating surface.

Further, as described above, the plate-shaped member is not limited to a mechanical joint including a joint bolt or the like.
They may be joined by being adhered to a covering surface or a seam covering member with an adhesive. Alternatively, a structure in which the joining with an adhesive and the joining with a mechanical joining tool including a joining bolt or the like are appropriately combined may be employed. As described above, if the bolt holes are eliminated by directly attaching the plate-shaped member to the covering surface using the adhesive, leakage of corrosive gas or the like from the bolt holes to the covering surface can be prevented.

The above-mentioned adhesive has at least a capability of adhering a plate member made of a C / C composite or the like to a coating surface made of concrete or ceramics or a seam coating material made of a C / C composite or the like. It is necessary to have heat resistance. Hereinafter, such an adhesive is referred to as a “heat-resistant adhesive”. The heat-resistant adhesive may have corrosion resistance. Such a heat-resistant adhesive includes an organic heat-resistant adhesive and an inorganic heat-resistant adhesive.

As the organic heat resistant adhesive, first, a polyimide adhesive can be used. For example, it includes polyimide for norbornene-2,3-dicarboxylic acid, BT resin, imide silicone resin, imide epoxy resin, aromatic polyimide, thermosetting polyimide, aromatic polyimide varnish, PSP modified imide resin, addition polymerization type polyimide and the like. Examples thereof include a resin composition obtained by polymerizing an epoxy resin with a polyimide resin, a polyamide resin, a polyamideimide resin, an IO resin, a bismaleimide resin, or the like, and a composition including an amine-terminated oligomer and a bismaleide resin.
In addition, epoxy resin-based resins can also be used. For example, general-purpose epoxy resin, polyfunctional amino epoxy resin,
CTBN-modified epoxy resin, imide-modified epoxy resin in which heat-resistant bone nucleus is introduced into epoxy resin, amide-imide-modified epoxy resin, mixture of heat-resistant oligomer having terminal functional group and epoxy resin, heat-resistant oligomer in which epoxy group is introduced into terminal, etc. No.

Next, as the inorganic heat resistant adhesive, a chemical reaction type ceramic adhesive can be used. The chemically reactive ceramic adhesive is composed of a binder, a curing agent, and an aggregate, and if necessary, a modifier, a heat-resistant pigment, and the like are blended, and kneaded with water to form a slurry.
When heated to about 150 to 300 ° C. together with the evaporation of moisture, a chemical reaction occurs, and the adhesive is cured by this. There are silicate-based adhesives, phosphate-based adhesives, and colloidal silica-based adhesives.

In the silicate adhesive, as a binder,
(Here M represents a metal atom) general formula _{M 2 O · XSiO 2 · YH} 2 O alkali metal silicate is used which is represented by. The adhesion performance in this case differs depending on the type and the molar ratio (SiO ₂ / M ₂ O) of the alkali metal M, and the adhesiveness according to the metal type is in the order of Na>K> Li when the molar ratio is about 3. The highest adhesiveness is obtained. As the curing agent, ZnO, MgO
Metal oxides, hydroxides, phosphates, borates, silicon fluorides, and the like are used. The aggregate is compounded for the purpose of improving heat resistance and adhesive strength, adjusting the coefficient of thermal expansion, and the like, and includes alumina (Al ₂ O ₃ ) and silica (SiO ₂ ).
₂ ), zirconia (ZrO ₂ ), spinel, and other oxides, nitrides, and carbides having good heat resistance are used. In the curing of the silicate-based adhesive, a siloxane bond is generated by dehydration and condensation of silanol groups with evaporation of water, and the reaction is further promoted by heating at about 150 ° C.

[0074] In the phosphate-based adhesives, as binders, the general formula phosphoric acid metal salt _{MO · XP 2 O 5 · YH} 2 O ( the M here represents a metal atom) represented by, for example, aluminum phosphate , Magnesium phosphate and the like are used.
The adhesion performance in this case depends on the type of metal M and the molar ratio (M /
The adhesion differs depending on the type of metal, and is in the order of Al>Mg>Ca>Cu> Zn. The highest adhesion is obtained when the molar ratio is about 0.25 to 1. As the curing agent, magnesium silicate, strontium titanate, or the like is used in addition to the metal oxide. In addition, as the aggregate, the same one as in the case of the silicate-based adhesive described above is used. This phosphate-based adhesive is acidic and therefore corrosive to metals, and has cautions such as a curing temperature of about 200 to 300 ° C. However, the adhesiveness to ceramic materials is superior to that of silicate-based adhesives. ing.

In the colloidal silica-based adhesive, a colloidal silica having a particle size of about 10 to 100 μm is used as a binder, a curing agent and an aggregate are mixed and dispersed in water or alcohol. is there. In this colloidal silica-based adhesive, after the bonding, the solvent is volatilized and heated, whereby a dehydration-condensation reaction of silanol groups on the silica surface occurs, and the silica is cured by forming a siloxane structure. This colloidal silica-based adhesive does not contain an alkali component and thus has good heat resistance, but the adhesive strength is slightly lower because of the predominantly van der Waals force.

In the first embodiment described above,
As a joining means or a mechanical joining tool, joining bolts shown in FIGS. 1, 2, and 4, and in the second embodiment, FIG.
Although described as an example of a metal-expandable anchor as shown in the example, the present invention is not limited to this, the plate-like member including any one of an adhesive or a mechanical connector or an appropriate combination thereof Any type that can be directly or indirectly bonded to the covering surface may be used, and other types of mechanical connectors, as well as mechanical connectors using a screw such as a bolt, For example, a mechanical connector that is driven into the covering surface like a nail and supports the workpiece by resisting the pulling force due to the frictional force of the peripheral surface may be used.

Further, as a joining means or a mechanical joining tool,
As shown in FIG. 5 (C), it is made of a C / C composite, and has a truncated cone-shaped dish-shaped head 24a and a cylindrical shaft portion 24.
A countersunk bolt 24 having b may be used. As shown in FIG. 5 (D), a groove 24c is formed in the head portion 24a of the countersunk bolt 24, for example, in a substantially "-" shape. If a driver-like tool having a tip protruding in a substantially “-” shape is applied to the groove 24c and rotated to screw and fasten, as shown in FIG. Countersunk bolt 2 above the covering board 11
The fourth head 24a does not protrude. Therefore, when the above-described coating structure is used on the inner wall surface of a chimney or the like, the movement of smoke or the like is not hindered, and the deposition of corrosive substances and the like can be prevented.

The substantially "-" shaped groove 2 as described above
5c as well as the countersunk bolt 24 having the upper surface 4c
As shown in (D), a countersunk bolt 24 'made of a C / C composite and having a concave portion 24d formed in a substantially hexagonal column shape at the center of the upper surface of a frustoconical dish-shaped head 24a' can also be used. . In this case, if a tool including a hexagon wrench or the like having a tip protruding substantially in the shape of a hexagonal prism is fitted into the recess 24b and screwed in by rotating the tool, the plate-like member is similarly formed. The head 24a 'of the countersunk bolt 24' does not protrude above the covering board 11 which is the above. Therefore, when the covering structure of this structure is used on the inner wall surface of a chimney or the like, the movement of smoke or the like is not hindered, and the deposition of corrosive substances and the like can be prevented.

The anchor may be of another structure or type. For example, even if it is a metal-expandable anchor, unlike the one shown in FIG. It may be of a type in which the distal end is expanded and fixed. Further, a “clamping anchor” may be used in which either the main body or the mandrel is tightened with a nut or the like to extrude the tip portion to expand the diameter and fix it to the inner wall surface of the hole.

Alternatively, not only the anchor utilizing mechanical action or mechanical force as described above, but also an organic adhesive such as a polyester adhesive, an epoxy acrylate adhesive, an epoxy adhesive, or the like is encapsulated. An “adhesive anchor” may be used in which the capsule is crushed by being enclosed, inserted into the anchor hole and driven into the anchor to break the capsule, and the anchor is fixed by bonding. In the case of an adhesive anchor, even if an inorganic adhesive containing a cement-based substance or the like is used as the adhesive to be encapsulated in the capsule, or an adhesive is injected into the anchor hole to fix the anchor, etc. Good. Alternatively, in FIG. 3 and FIG.
Instead of fixing with an anchor, a bolt hole or the like may be formed in the chimney inner wall surface W, and a bolt may be screwed into this bolt hole to join the frame 33 to the chimney inner wall surface.

In each of the above embodiments, the bolt holes (for example, H1, H1
', H2), and joining bolts (eg, 21 and 22) are screwed into these bolt holes.
The present invention is not limited to this, and other configurations, for example, opening a blind hole, fixing a pipe member having a female screw in the hole by driving or bonding, etc., to the female screw of the pipe member You may make it screw a joining bolt.

FIG. 1C, FIG. 2A and FIG.
4B, or the connecting bolts 22 and 92 and the mounting bolt 72 in FIG. 4A, or the connecting bolts 23 and 24 in FIGS. 5A to 5C.
In the above, the covering boards 11 to 14 and the seam covering member 3
1, 31A, 31B, 32, 34, 82 and the upper ring portion 33a have bolt holes 11a,
a, 12b, 13a, 13b, 31a, 31b, 31
f, 31g, 32a, 32b, 33f, 34c, 82a
Although the example in which the bolt is provided has been described, it is sufficient to fasten the bolt if the female screw is formed only in the member that is the most distal end side with respect to the bolt, that is, FIG.
In the case of FIG. 2B, the bolt hole H1 of the chimney inner wall surface W is used.
In the case of FIG. 2A, the bolt hole H1 in the chimney inner wall surface W 'is used.
4A, the bolt hole 33e for the joint bolt 22, and the bolt hole 4 for the mounting bolt 72.
2d, bolt hole 32b for joint bolt 82, FIG.
5A to 5C, only the bolt holes H3 and H4 are sufficient for the joint bolt 23 and only the bolt hole H1 is sufficient for the joint bolt 24, and each bolt is inserted into the other holes. Possible circular apertures may be used.

In each of the above embodiments, the seam covering members 31, 31A, 31B, 32,
Although an example in which 1C is formed of a C / C composite has been described, the present invention is not limited to this. Any material can be used as long as it is resistant to corrosion, including other materials such as silicon carbide (SiC) or silicon nitride (Si ₃ N ₄ ) or titanium dioxide (TiO ₂ ). Alternatively, the joint covering member may be formed of a heat-resistant ceramic material.

Alternatively, the joint portion is sealed with a sealing material having at least heat resistance (hereinafter referred to as a “heat-resistant sealing material”).
32, 34, etc. may be omitted. The heat-resistant sealing material may have corrosion resistance. As the heat-resistant sealing material, first, a silicone-based sealing material can be used. Silicone-based sealing materials include one-component silicone and two-component silicone, and are thermosetting (HT).
V) and room temperature curing type (RTV). Among them, RTV curing is achieved by the hydrolysis of dimethylsiloxane intermediates and their condensation to form polysiloxanes. Reticulated condensation occurs when trifunctional organosilane is condensed by the catalysis of an organometallic soap such as dibutyltin dilaurate. Polysiloxanes containing vinyl groups are reticulated by organic peroxides.

The one-component silicone described above has a liquid silicone prepolymer composed of a methyl-substituted polysiloxane having two or more blocked, hydrolyzable terminal groups. These terminal groups are acetoxy,
It refers to ketoxime, alkylamino, benzamide and the like. Further, as the filler, titanium dioxide, silica, calcium carbonate, dried clay and the like can be used. In the two-component silicone described above, the larger one of the two components contains a hydroxyl-terminated polysiloxane and a crosslinking agent such as ethyl orthosilicate. The curing agent is a paste of an organometallic catalyst, for example, dibutyl dibutylate. When these two components are mixed, the entire curing is started.

As another example of the heat-resistant sealing material, a fluoropolymer will be described below. The fluoroelastomer used as the material is a copolymer of vinyldene fluoride and hexafluoropropane. It is believed that the curing is achieved by a two-component system that reacts a diamine, such as hexamethylene diamine carbamate, with activation of magnesium oxide or dibasic lead phosphite to extract HF.

Further, the seam covering members 31, 31A, 31
B, 32, 34 and the main body of the connecting member 31C are C / C
Metal materials including composite, steel, etc., heat insulation and corrosion resistance
Formed of ceramic material that does not have
With silicon carbide (SiC) having heat insulation and corrosion resistance or
Silicon nitride (Si_ThreeN_Four) Or titanium dioxide (TiO 2)
_Two ) Etc. by using a thin film of ceramic material
May be used. Has the heat insulation and corrosion resistance described above.
The ceramic material not used is alumina (Al_TwoO_Three) 、 Ma
Gnesia (MgO), Zirconia (ZrO_Two ) 、 Murai
(3Al_TwoO_Three・ 2SiO_Two ) 、 Aluminum titanate
(Al_TwoTiO_FiveOr Al_TwoO_Three・ TiO_Three ), LAS (L
i_TwoO-Al_TwoO_Three-SiO_Two), Cordierite or M
AS (2MgO.2Al_TwoO_Three・ 5SiO_Two ) 、 Housing nitride
Element (BN), aluminum nitride (AlN) and the like.

Alternatively, the cover board 11 which is a plate-like member
To 14 and seam covering members 31, 31A, 31B, 32, 3
The above-described heat-resistant adhesive or heat-resistant sealing material may be applied to the contact surface with the heat-resistant adhesive 4. If the bolt holes are eliminated by directly attaching the plate member to the covering surface with an adhesive, leakage of corrosive gas or the like from the bolt holes to the covering surface can be prevented.

In each of the above embodiments, the cover boards 11 to 14 as plate-like members are formed by using the joining bolts 21 to 23 and the countersunk bolts 24 as mechanical joining tools and the chimney inner wall surface W as the covering surface. , W ′, the bolt holes or the circular holes are formed near the edges of the covering boards 11 to 14. However, the present invention is not limited to this. Alternatively, the covering board may be supported by the joint covering member only by mechanical action or mechanical force including fitting or the like.

For example, in the case shown in FIG. 6A, a seam covering member 35 having a substantially “T” -shaped cross section is used. This seam covering member 35 is formed of an elongated plate-shaped substrate 35.
A lower part 35a is provided with a ridge-shaped hanging part 35b at the center of the lower surface. In this case, the seam covering member 35 is provided with a bolt hole H5 formed in the chimney inner wall surface W, which is a covering surface, and a bolt provided so as to pass through the center of the substrate 35a and the hanging portion 35b of the seam covering member 35. By screwing the hole 35c and the joining bolt 25 as joining means, the seam covering member 3
5 is fixed to the chimney inner wall surface W, and the covering board 15 as a plate-like member is sandwiched and supported in a space between the lower surface of the substrate 35a of the seam covering member 35 and the surface of the chimney inner wall surface W.

With this configuration, since the cover board 15 does not need any bolt holes or holes, the processing of the cover board can be omitted, and the cracks from around the holes can be eliminated by eliminating the holes that are the stress concentration points. Etc. can be prevented. The above-described seam covering member 35 may be formed of a C / C composite, or may include silicon carbide (SiC) or silicon nitride (Si ₃ N ₄ ) or titanium dioxide (TiO ₂ ) having heat insulation and corrosion resistance. It may be formed of a ceramic material. Alternatively, the main body portion of the seam covering member 35 is formed of a metal material including C / C composite, steel or the like, or a ceramic material having no heat insulation or corrosion resistance, and the surface thereof is formed of silicon carbide (SiC) having heat insulation or corrosion resistance. ) Or a thin film of a ceramic material containing silicon nitride (Si ₃ N ₄ ) or titanium dioxide (TiO ₂ ). Ceramic materials that do not have the above-mentioned heat insulation and corrosion resistance include alumina (Al ₂ O ₃ ), magnesia (MgO), and zirconia (Z
rO ₂ ), mullite (3Al ₂ O ₃ .2SiO ₂ ), aluminum titanate (Al ₂ TiO ₅ or Al ₂ O ₃ .TiO ₂ )
₃ ), LAS (Li ₂ O—Al ₂ O ₃ —SiO ₂ ), cordierite or MAS (2MgO.2Al ₂ O ₃ .5Si)
O ₂ ), boron nitride (BN), aluminum nitride (Al
N) and the like.

FIG. 6B shows another example of a structure in which the covering board, which is a plate-like member, is supported by the joint covering member only by mechanical action or mechanical force including fitting or the like. No. In this case, a seam covering member 36 having a substantially “H” -shaped cross section is used. This seam covering member 36 has a substantially "H" -shaped cross section having an upper flange 36a, a web 36b, and a lower flange 36c.
It has a beam-like configuration extending from the near side to the far side of the paper surface of (B). The seam covering member 36 is provided so as to penetrate through a bolt hole H6 formed in the chimney inner wall surface W as a covering surface and the center of the upper flange 36a, the web 36b, and the lower flange 36c of the seam covering member 36. The seam covering member 36 is fixed to the chimney inner wall surface W by screwing the bolt holes 36d and the joining bolts 26 as joining means, and a plate-like member is provided in a space between the upper and lower flanges of the seam covering member 36. The covering board 15 is sandwiched and supported.

With this configuration, since the cover board 15 does not need any bolt holes or holes, the processing of the cover board can be omitted, and cracks and the like are prevented by eliminating the holes that are stress concentration points. be able to. The above-described seam covering member 36 may be formed of a C / C composite, or silicon carbide (SiC) having heat insulation and corrosion resistance.
Or silicon nitride (Si ₃ N ₄ ) or titanium dioxide (T
It may be formed of a ceramic material containing iO ₂ ) or the like. Alternatively, the main body of the seam covering member 36 is
It is formed of a metal material including C composite, steel or the like, or a ceramic material having no heat insulation or corrosion resistance, and the surface thereof is formed of silicon carbide (SiC), silicon nitride (Si ₃ N ₄ ), or titanium dioxide having heat insulation or corrosion resistance. (TiO
₂ ) It may be coated with a thin film of a ceramic material including the above. Ceramic materials having no heat insulation and corrosion resistance include alumina (Al ₂ O ₃ ), magnesia (MgO), zirconia (ZrO ₂ ), mullite (3Al ₂ O ₃ .2SiO ₂ ), and aluminum titanate (Al ₂ TiO ₂ ). ₅ or Al ₂ O ₃ .TiO ₃ ), LAS (L
_{i 2 O-Al 2 O 3} -SiO 2), cordierite, or M
AS (2MgO.2Al ₂ O ₃ .5SiO ₂ ), boron nitride (BN), aluminum nitride (AlN), and the like.

FIG. 6 shows still another example of a structure in which a covering board, which is a plate-like member, is supported by a joint covering member only by mechanical action or mechanical force including fitting or the like.
(C). In this case, a joint covering member 37 and a supporting member 38 are used. The seam covering member 37 has a substantially “H” -shaped cross section having an upper flange 37a, a web 37b, and a lower flange 37c, and has a beam-like configuration extending from the near side to the far side of the drawing of FIG. Have. Further, the support member 38 includes a substrate 38a and a vertical portion 38b erected upward from the left and right sides of the upper surface of the substrate 38a.
And a horizontal section 38c provided so as to bend from the upper end of the vertical section 38b toward the center, and has an inverted “Π” cross section, and extends from the near side to the far side of the paper surface of FIG. It has a beam-like configuration. And the support member 38 is
Bolt holes H7 drilled in the chimney inner wall surface W which is the coating surface
And a bolt hole 3 provided in the substrate 38a of the support member 38.
It is fixed on the chimney inner wall surface W by screwing 8d and a joining bolt 27 as joining means. The lower flange 37c of the joint covering member 37 is connected to the substrate 38a of the support member 38.
Are supported by fitting in a space formed between the upper surface of the horizontal portion 38b and the lower surface of the horizontal portion 38b. The cover board 15 as a plate-like member is sandwiched and supported by a space between the upper surface of the horizontal portion 38c of the support member 38 and the lower surface of the upper flange 37a of the joint cover member 37.

With this configuration, since the cover board 15 does not need any bolt holes or openings, the processing of the cover board can be omitted, and cracks and the like can be prevented by eliminating the openings, which are stress concentration points. be able to. In particular, the covering board 15 and the seam covering member 3 exposed on the side of the chimney exhaust gas or the like.
Since there is no opening in 7, the corrosive gas is almost completely shut off and does not enter the chimney inner wall surface W side.

The above-mentioned seam covering member 37 may be formed of a C / C composite, or may be made of silicon carbide (SiC) or silicon nitride (SiC) having heat insulation and corrosion resistance.
_It may be formed of a ceramic material containing 3N ₄ ) or titanium dioxide (TiO ₂ ). Alternatively, the main body of the seam covering member 37 is formed of a metal material including C / C composite, steel or the like, or a ceramic material having no heat insulation or corrosion resistance, and the surface thereof is formed of silicon carbide (SiC) having heat insulation and corrosion resistance. ) Or silicon nitride (Si
_It may be coated with a thin film of a ceramic material containing ₃ N ₄ ) or titanium dioxide (TiO ₂ ). Ceramic materials which do not have the above-mentioned heat insulation and corrosion resistance include alumina (Al ₂ O ₃ ), magnesia (Mg
O), zirconia (ZrO ₂ ), mullite (3Al ₂ O ₃₎
.2SiO ₂ ), aluminum titanate (Al ₂ TiO ₅₎
Or Al ₂ O ₃ .TiO ₃ ), LAS (Li ₂ O—Al ₂ O)
_3- SiO ₂ ), cordierite or MAS (2MgO
2Al ₂ O ₃ .5SiO ₂ ), boron nitride (BN), aluminum nitride (AlN) and the like.

The support member 38 may be formed of a C / C composite, or may have heat insulation and corrosion resistance such as silicon carbide (SiC), silicon nitride (Si ₃ N ₄ ), titanium dioxide (TiO ₂ ), or the like. It may be formed of a ceramic material containing. Alternatively, the main body of the support member 38 is formed of a metal material including C / C composite, steel or the like, or a ceramic material having no heat insulation or corrosion resistance, and the surface thereof is formed of silicon carbide (SiC) having heat insulation or corrosion resistance. Alternatively, it may be coated with a thin film of a ceramic material containing silicon nitride (Si ₃ N ₄ ) or titanium dioxide (TiO ₂ ). Ceramic materials having no heat insulation and corrosion resistance include alumina (Al ₂ O ₃ ), magnesia (MgO), zirconia (ZrO ₂ ), mullite (3Al ₂ O ₃ .2SiO ₂ ),
Aluminum titanate (Al ₂ TiO ₅ or Al ₂ O ₃ .T
iO ₃ ), LAS (Li ₂ O—Al ₂ O ₃ —SiO ₂ ), cordierite or MAS (2MgO.2Al ₂ O ₃ .5)
SiO ₂ ), boron nitride (BN), aluminum nitride (AlN), and the like. In addition, the entire surface of the side exposed to the side such as the stack exhaust gas is covered with the covering board 15 and the seam covering member 37.
6C, the support member 38 is
6C may not be a beam-shaped configuration extending from the near side to the far side of the paper surface of FIG. 6. For example, a substantially block-shaped structure having a short length in the direction from the near side to the far side of the paper surface of FIG. It may be a member.

Further, in each of the above-described embodiments, examples have been described in which the processing is not performed near the heads of the joining bolts 21 to 23 and the countersunk bolt 24, particularly around the bolt holes, which are joining means or mechanical joining tools. However, the present invention is not limited to this. Even if the mechanical connector is exposed to the inner surface side of the structure (for example, the side of the chimney inner wall surface W that comes into contact with exhaust gas or the like), the connector cover member may be attached. Good.

For example, as shown in FIGS. 6 (D) and 6 (E), the periphery of the hexagonal column-shaped head (eg, 21a) of the joining bolt (eg, 21) as the joining means is a bolt cap 3
9. As shown in FIG. 6D, the bolt cap 39 is made of a C / C composite or silicon carbide (Si) having heat insulation and corrosion resistance.
C) or a ceramic material containing silicon nitride (Si ₃ N ₄ ) or titanium dioxide (TiO ₂ ), etc., is formed in a substantially cylindrical shape, and a bolt head fitting hole 39a, which is a substantially hexagonal pillar-shaped blind hole, is provided near the center. Has been drilled. Each dimension of the bolt head fitting hole 39a is set slightly smaller than each dimension of the hexagonal column-shaped head (eg, 21a) of the joining bolt (eg, 21).

With this configuration, as shown in FIG. 6 (E), after the covering board (eg, 11) as a plate-like member is joined to the inner wall surface of the chimney as the covering surface with joining bolts (eg, 21), The bolt head fitting hole 39a is directed downward to the head of the bolt, the hexagonal sides of both are set so as to correspond to each other, and the bolt cap 39 is hit with a hammer or the like to thereby attach the bolt cap 39 to the head of the bolt. Part (for example, 21
a). If such a joint covering member is used, when the covering structure of this structure is used for an inner wall surface of a chimney or the like, corrosive gas or corrosive substance contained in smoke or the like is removed from the bolt holes (or holes) 11a. It is possible to prevent reaching the upper end, and it is possible to more effectively prevent corrosion of the coating surface inside the plate-shaped member.

FIG. 6F shows a substantially cylindrical concave portion 16 on the surface.
a and the cover board 16 which is a plate-like member having the bolt holes 16b formed thereon is joined to the inner wall surface of the chimney which is the covering face by joining bolts (for example, 21). 39 is a bolt head (for example, 21
FIG. 3A shows a state fitted to FIG. in this case,
The inner diameter of the recess 16a is set slightly smaller than the outer diameter of the bolt head fitting hole 39a.

When such a joint covering member is used, when the covering structure of this structure is used for an inner wall surface such as a chimney,
The path through which the corrosive gas or corrosive substance contained in the smoke or the like reaches the upper end of the bolt hole (or opening) 11a is further complicated, and the corrosive gas or corrosive substance on the inner coating surface of the plate-like member. Can be more effectively prevented. Further, since the head of the bolt cap 39 does not protrude above the covering board 16 which is a plate-shaped member and is flush with the surface of the covering board 16, it does not hinder the movement of smoke and the like, and Deposition of substances and the like can be prevented, and also in this respect, the corrosion prevention effect of the coating surface inside the plate-like member is enhanced.

The external shape of the above-mentioned bolt cap 39 is not only a columnar shape but also an n-sided prism shape (n: an integer of 3 or more).
And so on. In addition, the above-mentioned bolt cap 39
Is formed of a metal material including C / C composite, steel or the like, or a ceramic material having no heat insulation or corrosion resistance, and its surface is formed of silicon carbide (SiC) or silicon nitride (Si) having heat insulation or corrosion resistance. _It may be coated with a thin film of a ceramic material containing ₃ N ₄ ) or titanium dioxide (TiO ₂ ). Ceramic materials having no heat insulation and corrosion resistance include alumina (Al ₂ O ₃ ), magnesia (MgO), zirconia (ZrO ₂ ), mullite (3Al ₂ O ₃ .2SiO ₂ ),
Aluminum titanate (Al ₂ TiO ₅ or Al ₂ O ₃ .T
iO ₃ ), LAS (Li ₂ O—Al ₂ O ₃ —SiO ₂ ), cordierite or MAS (2MgO.2Al ₂ O ₃ .5)
SiO ₂ ), boron nitride (BN), aluminum nitride (AlN), and the like.

Further, any one or both of the inner surface and the bottom surface of the bolt cap 39 in FIG. 6 (E), or any one of the inner surface, the bottom surface and the outer surface of the bolt cap 39 in FIG. 6 (F). Alternatively, the above-mentioned ceramic adhesive or the like may be applied to two or all surfaces so that the bolt cap 39 does not fall off the bolt head 21a. In the case of such a configuration, the bolt cap 39 shown in FIG.
Including an adhesive containing a ceramic adhesive applied to the bottom surface of the bolt cap 39, or a ceramic adhesive applied to one or both of the bottom surface and the outer surface of the bolt cap 39 in FIG. The adhesive can also function as a sealing material that prevents leakage of corrosive gas and the like from the bolt holes to the covering surface.

When the seam covering member is a C / C composite, the heat conductivity is good. Therefore, when the above-described structure of the structure is used for the inner wall surface of the chimney, heat from the high-temperature gas in the chimney is transferred to the inside of the chimney. It is easily transmitted to the coating surface such as the wall surface W, which causes thermal distortion and the like, and the inner wall surface of the chimney may be damaged by fatigue or the like. For this reason, a material having a high heat insulating property between the seam covering member and the covering surface, for example, silicon carbide (SiC)
Or silicon nitride (Si ₃ N ₄ ) or titanium dioxide (T
A member made of a ceramic material containing iO ₂ ) or the like may be sandwiched, or the joint covering member itself may be formed of such a ceramic material so as to block the transmission of heat from the plate member to the covering surface. In addition, the joint bolts and the countersunk bolts for joining the plate member to the covering surface may be formed of a ceramic material having a high heat insulating property.

Alternatively, a body portion such as a seam covering member, a joint bolt, or a countersunk bolt is formed of a metal material including C / C composite, steel, or the like, or a ceramic material having no heat insulating property or corrosion resistance, and the surface thereof is formed. Alternatively, it may be coated with a thin film of a ceramic material containing silicon carbide (SiC) or silicon nitride (Si ₃ N ₄ ) or titanium dioxide (TiO ₂ ) having heat insulation and corrosion resistance. Ceramic materials that do not have the above-mentioned heat insulation and corrosion resistance include alumina (Al ₂ O ₃ ), magnesia (MgO), zirconia (ZrO ₂ ), and mullite (3A).
l ₂ O ₃ · 2SiO ₂ ), aluminum titanate (Al ₂ T)
iO ₅ or _{Al 2 O 3 · TiO 3)} , LAS (Li 2 O-A
l ₂ O 3 —SiO ₂ ), cordierite or MAS (2
MgO.2Al ₂ O ₃ .5SiO ₂ ), boron nitride (B
N), aluminum nitride (AlN) and the like.

Further, the cover boards 11 to 1 which are plate-like members
For example, a boric acid-based antioxidant coating may be applied to the surface of the sheet 6 that comes into contact with smoke or the like. This is because the coating boards 11 to 16 on the side contacting with smoke or the like become hot, but the C / C composite material generally has a temperature of about 400 ° C. when placed in air (in an oxygen atmosphere). When the temperature reaches 550 ° C
If the ratio exceeds, oxidation becomes remarkable, and the material is deteriorated. When a boric acid-based coating is applied to the surface of the C / C composite material, oxidation can be prevented even at a temperature higher than 550 ° C. described above. It is considered that the reason is that the boric acid-based coating film is vitrified or preferentially oxidized to cover the carbon portion, reduce the diffusion rate of oxygen, and prevent oxidation of the surface.

On the other hand, regarding the upper limit of the temperature of gas such as smoke in a chimney, see, for example, the above-mentioned “Chimney Structure Design and Construction Guidelines (issued on November 20, 1982, publisher: Nippon Building Center, supervision: Ministry of Construction) Housing Bureau Building Guidance Section)
"Table 2.1-1 List of chimney lining specifications" in "(3) Lining (page 13 of the above guidelines)" in "2.1 Common Items" (pages 16 to 19 of the above guidelines) "
As the “usable temperature limit” in the above, “fire-resistant brick: room temperature to 300 ° C. (page 17 of the above guidelines)”, “Portland cement system: room temperature to 250 ° C. (17th of the above guidelines)
Page) "," Alumina-cement castable (for high-temperature insulation): room temperature to 650 ° C ", and" 5) Design constant table (indicated above in "2.2 Reinforced concrete chimney") Pp. 29) ”,“ Body concrete: room temperature to 100 ° C. ”,“ firebrick: room temperature to 3 ° C ”
00 ° C ”,“ Portland cement system: room temperature to 250
° C ”,“ Alumina cement castable (high temperature):
From room temperature to 650 ° C ”. Further, “5) Design constant (page 58 of the above guideline)” of “2.3 Steel chimney” of the above guideline stipulates that the above-mentioned design constant value of the reinforced concrete chimney is applied mutatis mutandis. I have.
From these facts, the temperature range that the chimney lining made of the C / C composite material can withstand is from normal temperature to 650
It is considered that a value up to about ° C should be considered. When the temperature is from normal temperature to about 400 ° C., the C / C composite material can sufficiently withstand the surface without applying a boric acid-based coating, and has a temperature range of about 400 ° C. to about 650 ° C. It is considered that by applying a boric acid-based coating, the function of the lining can be achieved while preventing the oxidation of the surface of the C / C composite material.

In the second embodiment described above,
As the frame-shaped member, the frame 33 having a substantially cylindrical shape has been described as an example. However, the present invention is not limited to this. Framed member. Further, the coating unit is not only a cylindrical shape, a half-shape of a cylinder, a three-shape, a four-shape, or a half-shape such as a square tube, a hexagonal tube, or a polygonal tube,
The shape may be a three-part shape, a four-part shape, or the like.

Further, in the second embodiment described above,
As the base member, a substantially annular member having a substantially L-shaped cross section as shown in FIG. 4A has been described as an example, but the present invention is not limited to this, and is fixed to the covering surface. Any member may be used as long as it can attach a frame-shaped member, and a base member having another shape, for example, a cross section having a substantially “I” shape, a substantially “H” shape, or a substantially “U” shape. The shape may be a letter shape, a substantially “b” shape, or the like.

[0111]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1) First Embodiment First, an example in which a coating unit for a chimney inner wall coating structure, which is an example of the above-described structure of a building according to the present invention, is actually manufactured will be described in detail below. In manufacturing the chimney inner wall covering structure, a C / C composite covering board was first produced. In order to produce this C / C composite coated board, a preformed sheet having the above-described configuration was produced. Next, a plurality of the prepared preformed sheets were laminated and heated and baked by using a hot press method to prepare a coated board. After that, the obtained covering board is subjected to a bolt hole forming process, a cutting process as necessary, and the like. (Not shown) and attaching bolts to form a coating unit (not shown).

In the above-mentioned manufacturing process, first, an example of manufacturing a preformed sheet will be described. FIG. 7 is a perspective view showing the configuration of a preformed sheet manufactured in Example 1 of the method for manufacturing a C / C composite coated board used in the structure of a building according to the present invention.

As shown in the figure, the preformed sheet 201 includes a preformed yarn 202 and a thermoplastic resin fiber yarn 203. Further, the preformed yarn 202 and the thermoplastic resin fiber yarn 203 are plain-woven such that the thermoplastic resin fiber yarn 203 becomes a warp (warp) and the preformed yarn 202 becomes a weft (weft). .

Of these, preformed yarn 20
No. 2 is constituted by incorporating an inert ultrafine powder into a carbon fiber bundle produced from an acrylonitrile copolymer and coating the same with a thermoplastic resin.

The above-mentioned carbon fiber bundle is composed of 12,000 carbon fiber filaments, the density of the carbon fiber bundle is 1.76 g / cm ³ , and the tensile strength is 360 kgf / cm ^3.
mm ² and the tensile modulus is 23.5 × 10 ³ kgf /
mm ² and the elongation was 1.5%. As a thermoplastic resin for covering the carbon fiber bundle, polyphenylene sulfide (hereinafter, referred to as “PPS”) was used. The density of this PPS is 1.37 g / cm ³ ,
Flexural strength was 12.7kgf / mm ^2, a flexural modulus of 350 kgf / mm ^2. Carbon black was used as the inert ultrafine powder. The density of this carbon black was 1.83 g / cm ³ , and the average specific surface area diameter was 0.07 μm. Using the above materials, carbon black was included in the carbon fiber bundle by air jet, and then the carbon fiber bundle was coated with a PPS resin to produce a preformed yarn 202. The diameter of the obtained preformed yarn was about 1.8 mm.

Further, as the thermoplastic resin fiber yarn 203, a PPS fiber yarn was used. This PPS fiber yarn 203
Has one filament and 180 denier
(Diameter: about 140 μm).

Next, the above-described PPS fiber yarn 203 is set as a warp in a rapier loom, and the above-described preformed yarn 202 is woven as a weft, so that the strength of the preformed yarn 202 in the extending direction is reduced. An excellent one-way preformed sheet 201 was produced. At this time, the tension acting on the PPS fiber yarn 203 is 12 gf
And the tension acting on the preformed yarn 202 was 450 gf.

In the obtained one-way preformed sheet 201, the total amount of carbon fiber, PPS resin (the one coated with the preformed yarn and the one used as the thermoplastic resin fiber yarn) is used. ) And carbon black were 50.0: 49.9: 0.1.

2) Example 2 Next, Example 2 in which the preformed sheets obtained as described above were laminated and fired to produce a coated board will be described. The second embodiment will be described in detail with reference to FIG. FIG. 8 is a perspective view showing the configuration of a preformed sheet laminate manufactured in Example 2 of the method of manufacturing a C / C composite coated board used for the structure of a building according to the present invention.

As shown in the figure, this preformed sheet laminate 301 is constituted by laminating three unidirectional preformed sheets 201A, 201B and 201C manufactured as described above. In FIG. 8, the parallel lines illustrated in each preformed sheet indicate that the extending direction of the lines is the carbon fiber reinforcing direction of the sheet.

Therefore, in the second embodiment, the preformed sheets 201A and 201B are set such that the carbon fiber reinforcing direction of the preformed sheet 201A is orthogonal to the carbon fiber reinforcing direction of the preformed sheet 201B.
Are laminated, and the preformed sheets 201B and 201C are laminated such that the carbon fiber reinforcing direction of the preformed sheet 201B and the carbon fiber reinforcing direction of the preformed sheet 201C are orthogonal to each other. That is, the carbon fiber reinforced directions of the preformed sheets 201A and 201C are the same, and
A and the carbon reinforcing direction of the preformed sheet 201B sandwiched between 201C
The direction is perpendicular to the carbon fiber reinforcement directions of 1A and 201C.

The preformed sheet laminate 301 having a three-layer structure laminated as described above had a width of 640 mm and a length of 1100 mm. Next, the preformed sheet laminate 301 was fired at 2000 ° C. by a hot press method. As a result, a sheet-shaped coated board made of a C / C composite was obtained. This coated board has a density of 1.6 g / cm ³ , a thickness of 1.2 mm, a bending strength of 33 kgf / mm ² , a flexural modulus of 8000 kgf / mm ² and a maximum bending curvature (limit The curvature of the curved surface of the sheet when it is bent to
m. The flexural strength and flexural modulus of the C / C composite coated board were measured according to JIS K7014.

As described above, when a laminate is formed by laminating a plurality of preformed sheets and the laminate is baked by hot press to produce a C / C composite sheet-shaped cover board, the laminate is laminated. By performing a treatment such as changing the fiber direction of at least one of the plurality of preformed sheets from the other, the bending of the obtained C / C composite sheet in a specific direction in the developing direction of the surface of the C / C composite sheet is performed. The strength was set lower than the bending strength in other directions, and a C / C composite coated board having high flexibility in a specific direction could be produced.

It was confirmed in other examples that the flexible C / C composite coated board as described above can be obtained by a method other than the above-described example. Although not shown, for example, in the case where five unidirectional preformed sheets are laminated, a preformed sheet laminate in which carbon fiber reinforced directions are alternately arranged so as to be orthogonal to each other, a unidirectional preformed sheet When five are laminated, the first two carbon fiber reinforcement directions are matched, the next two carbon fiber reinforcement directions are matched, and the first two carbon fiber reinforcement directions are orthogonal to the last one. Preformed sheet laminate in which the direction of carbon fiber reinforcement is set to match the direction of the first two carbon fiber reinforcements, and two carbon fiber reinforcements in the case of laminating five unidirectional preformed sheets A preformed sheet product in which two sets with matching directions are made and arranged so that one preformed sheet whose carbon fiber reinforced direction is orthogonal is sandwiched therebetween. The body is arranged so that the strength in any one direction is excellent by laminating n sheets (n: an integer of 2 or more) of bidirectional preformed sheets having the strength in any one direction. A reformed sheet laminate, a preformed sheet laminate in which a unidirectional preformed sheet is interposed between isotropic preformed sheets such as a nonwoven fabric, and the like are produced, and a 2,000 °
C was fired by a hot press method to obtain a flexible C / C composite coated board. These flexible C / C
In any of the composite coated boards, the bending strength in a specific direction among the development directions of the board surface is lower than the bending strength in other directions, and the flexibility in a specific direction is increased. It was confirmed that.

3) Example 3 Next, Example 3 in which a coated unit was produced using the coated board obtained as described above will be described. Although not shown, the width 640 mm,
Twenty-five flexible C / C composite coated boards having a length of 1100 mm were prepared, and five of them were cut so as to have a length of 624 mm. In addition, bolt holes were appropriately formed near the edges of these boards. In addition, in order to manufacture the coating unit, the coating unit shown in FIG.
A frame (not shown) having the same configuration as that shown in FIG. The inner diameter of this frame is 1600 mm,
The length from the upper end of the upper ring to the lower end of the lower ring is 2
It was 560 mm. Next, while bending the above-mentioned 25 coated boards into a curved surface, on the inner surface of the frame,
It is attached with a joint covering member (not shown) and a joint bolt (not shown) having the same configuration as that shown in FIG.
A coating unit (not shown) was produced. At this time, the covering board was easily bent, and could easily follow the curvature of each ring portion of the frame. The inner wall of the frame was covered with four 1100 mm covering boards and one 624 mm covering board without any gap in the circumferential direction of the frame. The length of the coating unit thus manufactured in the cylindrical axis direction (length of the coating board portion) is 3
It was 200 mm.

[0126]

As described above, according to the present invention,
A plate member made of carbon fiber reinforced carbon composite material formed by disposing a carbon fiber reinforced member made of carbon fiber in a base material made of carbon, and a plate on a coating surface which is a surface of a building to be coated. Since the support means for supporting the shaped member is provided, even in the case of the inside of the building in a corrosive atmosphere or a high-temperature environment, the resistance is high, and deterioration and damage do not occur. For this reason, for example, when used as a coating structure on the inner wall surface of a chimney, the period of inspection and repair can be lengthened, and the maintenance cost of such a structure can be reduced. In addition, since it is lightweight, there is an advantage that a load such as a load applied to the structure is small.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a chimney inner wall coating structure according to a first embodiment of the present invention, and FIG. 1 (A) is a partially cutaway perspective view showing the entire configuration of the chimney inner wall coating structure. (B) is an enlarged side view of a portion where the covering board is joined to the chimney inner wall surface, and FIG. 1 (C) is an enlarged cross-sectional view of a portion where the covering board is joined to the chimney inner wall surface. I have.

FIG. 2 is a view showing a configuration of a modification of the chimney inner wall covering structure of the first embodiment of the present invention shown in FIG. 1; FIG. 2 (A) shows that the inner wall surface of the chimney is bent at substantially a right angle; FIG. 2 (B) is an enlarged cross-sectional view of a joint portion of a covering board in another joint covering member, and FIG. 2 (C) is FIG. 2 (B). Are side views of connecting members for connecting the seam covering members shown in FIG.

FIG. 3 is a side view showing an overall configuration of a chimney inner wall covering structure according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a more detailed configuration of the chimney inner wall covering structure of the second embodiment of the present invention shown in FIG. 3, and FIG.
FIG. 4B is a partial cross-sectional view showing the relationship and configuration of the chimney inner wall coating structure, the coating unit and the chimney inner wall surface, and FIG. 4B is a perspective view showing the configuration of a frame used for the coating unit.

FIG. 5 is a diagram (1) showing a configuration of a chimney inner wall covering structure according to another embodiment of the present invention.

FIG. 6 is a diagram (2) illustrating a configuration of a chimney inner wall covering structure according to another embodiment of the present invention.

FIG. 7 shows C / C used for the covering structure of the construct according to the present invention.
It is a perspective view showing composition of a preformed sheet manufactured in Example 1 of a manufacturing method of a covering board made of composite.

FIG. 8 shows C / C used for the covering structure of the construct according to the present invention.
It is a perspective view which shows the structure of the preformed sheet laminated body manufactured in Example 2 of the manufacturing method of the cover board made from a composite.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Cover board 11a Bolt hole 11b Hole for countersunk bolt 12 Cover board 12a, 12b Bolt hole 13 Cover board 13a, 13b Bolt hole 14 Cover board 14a Bolt hole 15 Cover board 16 Cover board 16a Recess 16b Bolt hole 21 Joint bolt 21a Head 21b Shaft part 22, 23 Joint bolt 24, 24 'Countersunk bolt 24a, 24a' Head part 24b Shaft part 24c Groove 24d Concave part 25-28 Joint bolt 31, 31A, 31B Joint covering member 31C Connecting member 31a, 31b Bolt hole 31c Flange 31d Web 31e Lower flange 31f, 31g Bolt hole 31h Upper flange 31i Web 31k Bolt hole 32 Seam covering member 32a, 32b Bolt hole 33 Frame 33a Upper ring portion 33b Middle ring portion 33c Lower ring portion 3d Vertical connection part 33e, 33f Bolt hole 34 Seam covering member 34a Substrate 34b Projecting part 34c Bolt hole 35 Seam covering member 35a Substrate 35b Hanging part 35c Bolt hole 36 Seam covering member 36a Upper flange 36b Web 36c Lower flange 36d Bolt hole 37 Joint Covering member 37a Upper flange 37b Web 37c Lower flange 38 Supporting member 38a Substrate 38b Vertical portion 38c Horizontal portion 38d Bolt hole 39 Bolt cap 39a Bolt head fitting hole 42, 42 'Base member 42a Chimney fixing flange 42b Opening 42c Unit mounting Flange 42d Bolt hole 52 Anchor 52a Anchor body 52b Mandrel 62 Coating unit 72 Mounting bolt 82 Seam coating member 82a Bolt hole 92 Joint bolt 101, 102 Chimney inner wall coating structure 2 01, 201A to 201C Preformed sheet 202 Preformed yarn 203 PPS fiber yarn 301 Preformed sheet laminate C Chimney G Gas H1, H1 'Bolt hole H2 Anchor hole H3 to H7 Bolt hole J1 Board seam J2 Unit seam W, W ′ Chimney inner wall

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mihoko Yamashita 2-16-27 Nishikicho, Warabi City, Saitama Prefecture Inside (72) Inventor Yoshio Yoshihara 2-16-27 Nishikicho Warabi City, Saitama Prefecture (72) Inventor Shunji Motoki 1-24-14 Nishi-Shimbashi, Minato-ku, Tokyo Nishi-Shimbashi Mitsui Building Inside Daido Kogyo Co., Ltd. Mitsui Building Daido Kogyo Co., Ltd.

Claims (9)

[Claims] 1. A plate-like member made of a carbon fiber-reinforced carbon composite material formed by disposing a carbon fiber-reinforced member made of carbon fiber in a base material made of carbon; A covering structure for a building, comprising: a supporting means for supporting the plate-like member on a certain covering surface. 2. The covering structure for a building according to claim 1, wherein the plate-shaped member is a single sheet-shaped member formed by woven or entangled carbon fibers, or a plurality of the sheet-shaped members. The carbon fiber reinforced member formed by lamination is subjected to a molding process by being pressed at a predetermined pressure while being heated at a first temperature, and then subjected to a carbonization process by being heated at a second temperature. A coating structure for a building, which is formed by being subjected to a graphitization treatment by being heated at a third temperature as required. 3. The covering structure for a building according to claim 2, wherein the covering surface includes a curved surface at least in part, and the plate-like member may be a specific direction among the developing directions of the sheet surface. A covering structure for a building, wherein a bending strength in a bending direction is lower than a bending strength in another direction, and the structure can follow the curved surface by bending deformation. 4. The covering structure for a building according to claim 1, wherein the supporting means is an adhesive or a mechanical connector, or an appropriate combination thereof. And a joining means for directly or indirectly joining the plate-like member to the covering surface. 5. The covering structure for a building according to claim 1, wherein the support means includes: a base member fixed to the covering surface; and at least one of the covering surface. A frame-shaped member that is mounted on the base member while the plate-shaped member is mounted in a state where the portion can be covered, and the plate-shaped member is mounted in advance on the frame-shaped member to form a coating unit. And a covering structure for a building, wherein the covering unit is attached to the base member. 6. The covering structure for a building according to claim 1, wherein the support means is provided at a seam portion formed between the adjacent plate members. A covering structure for a building, comprising a seam covering member for covering a covering surface. 7. The covering structure of a building according to claim 1, wherein the building is formed in a substantially pipe-like shape or a substantially chamber-like shape, and the covering surface is formed of the building. An inner surface, and wherein the plate-shaped member is a gas to be protected containing a corrosive component or containing high-temperature smoke and flows inside the building, or comes into contact with the gas to be protected staying inside the building. A covering structure for a building, characterized in that: 8. The coating structure for a building according to claim 1, wherein at least the plate-shaped member is used in a temperature range from room temperature to 650 degrees Celsius. A covering structure for a construct, characterized by the fact that: 9. A plate member made of a carbon fiber reinforced carbon composite material formed by disposing a carbon fiber reinforced member made of carbon fiber in a base material made of carbon on a surface of a building to be coated. A method of coating a construction, wherein the coating is supported on a coating surface by a support means.