CN111492194A - Sleeve structure for cylindrical furnace made of carbon/carbon composite material - Google Patents

Sleeve structure for cylindrical furnace made of carbon/carbon composite material Download PDF

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Publication number
CN111492194A
CN111492194A CN201880082157.XA CN201880082157A CN111492194A CN 111492194 A CN111492194 A CN 111492194A CN 201880082157 A CN201880082157 A CN 201880082157A CN 111492194 A CN111492194 A CN 111492194A
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carbon
sleeve structure
composite material
cylindrical furnace
plate members
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橘正晴
龟崎昭雄
长尾博孝
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Cfc Design KK
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Cfc Design KK
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/008—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of an organic adhesive, e.g. phenol resin or pitch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/10—Muffles
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/38—Fiber or whisker reinforced
    • C04B2237/385—Carbon or carbon composite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/82—Two substrates not completely covering each other, e.g. two plates in a staggered position

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The present invention addresses the problem of providing a sleeve structure for a cylindrical furnace (including a vertical cylindrical furnace and a horizontal cylindrical furnace) that has excellent durability, small heat capacity, does not require large-scale manufacturing equipment, and can significantly reduce the operating cost, the sleeve structure for the cylindrical furnace being configured from a plurality of plate members made of a carbon/carbon composite material and a plurality of connecting members made of a carbon/carbon composite material, and the plurality of plate members being joined together via the plurality of connecting members to form a polygonal cylindrical body.

Description

Sleeve structure for cylindrical furnace made of carbon/carbon composite material
Technical Field
The present invention relates to a sleeve structure made of a carbon/carbon composite material for a high-temperature cylindrical furnace, and more particularly, to a sleeve structure of a polygonal columnar body formed by joining plate members made of a carbon/carbon composite material.
Background
In a cylindrical furnace (including a vertical cylindrical furnace and a horizontal cylindrical furnace) which is one type of heat treatment equipment and which is a furnace of an indirect heating system (also referred to as an indirect heating furnace or a muffle furnace), a partition wall (sleeve) made of a refractory material having good thermal conductivity is provided between a heat source or a heating element and a firing chamber.
Conventionally, a metal material such as heat-resistant steel has been used for the partition wall structure (sleeve structure), but the metal sleeve structure has insufficient heat resistance and a large thermal expansion coefficient, and therefore has the following problems: in the process of repeating heating and cooling, the metal sleeve is largely deformed by thermal deformation, and cannot withstand long-term use.
Therefore, instead of the metal sleeve structure, a carbon or graphite sleeve structure (hereinafter, these are also referred to as graphite) is used (see patent document 1). Graphite materials have high heat resistance and chemical stability and a lower thermal expansion coefficient than metal materials, and therefore can be used repeatedly in a high-temperature environment.
However, since the graphite material is brittle and not so strong, there is a problem that it is necessary to use a graphite material having a very thick wall in order to use the graphite material as a sleeve structure. Therefore, the weight of the jacket structure becomes very large, and the heat capacity of the furnace becomes excessively large, and as a result, there are the following problems: the temperature rise of the furnace body needs a large amount of heat energy, and the heat efficiency of the furnace is greatly reduced.
In addition, when a graphite sleeve structure is employed in the cylindrical furnace, the sleeve structure needs to be formed in a cylindrical shape, and the sleeve structure integrally molded in a cylindrical shape is required for the reason of the characteristics (strength and brittleness) of the graphite material. This is because, in the case of a graphite material having insufficient strength and rigidity and brittle characteristics, it is difficult to construct a sleeve structure having sufficient strength and rigidity even if a cylindrical sleeve structure is constructed by mechanically joining several divided members.
Therefore, if the cylindrical furnace is enlarged, a large cylindrical graphite having a large wall thickness is required, and as a result, the following problems are also caused: the graphite production equipment is required to be large in size, and the cost of the sleeve structure is increased.
Patent document 1: japanese laid-open patent publication No. 9-101086
Disclosure of Invention
The present invention has been made in view of the above-described technical background, and an object thereof is to provide a sleeve structure for a cylindrical furnace (including a vertical cylindrical furnace and a horizontal cylindrical furnace) which has excellent durability, a small heat capacity, and no need for large-scale manufacturing equipment, and which can significantly reduce the operating cost.
In order to solve the above problems, a sleeve structure for a cylindrical furnace is designed, which is formed by mechanically joining a plurality of carbon/carbon composite materials, each of which has high heat resistance, strength, and rigidity and has sufficient toughness, and is formed into a flat plate-like basic form, so as to form a polygonal columnar body having a substantially cylindrical shape.
That is, the invention according to the first aspect is a sleeve structure for a cylindrical furnace, which is configured by a plurality of plate members made of a carbon/carbon composite material and a plurality of connecting members made of a carbon/carbon composite material, and which is formed into a polygonal columnar body by joining the plurality of plate members via the plurality of connecting members.
In the present invention according to the second aspect, the sleeve structure for the cylindrical furnace is configured by a plurality of shell structure units formed by rigidly coupling a plurality of plate members made of a carbon/carbon composite material to each other to form a shell structure having a cross-sectional mountain shape, and a plurality of connecting members made of a carbon/carbon composite material, and the plurality of shell structure units are coupled to each other via the plurality of connecting members to form a polygonal columnar body.
Further, according to the sleeve structure for a cylindrical furnace of the invention according to the first or second aspect, in the invention according to the third aspect, the sleeve structure for a cylindrical furnace is formed into a polygonal columnar body, and the plate thickness of at least one plate member of the plurality of plate members is different from the plate thicknesses of the other plate members.
Further, according to the sleeve structure for a cylindrical furnace of the invention according to any one of the first to third aspects, in the invention according to the fourth aspect, the sleeve structure for a cylindrical furnace is formed into a polygonal columnar body, and the circumferential length of the cross-sectional polygon of at least one of the plurality of plate members is different from the circumferential length of the cross-sectional polygon of the other plate member.
In the present invention, the sleeve structure for the cylindrical furnace, which is formed into the polygonal columnar body having the above-described configuration, can provide a sleeve structure for a cylindrical furnace that is excellent in durability, small in heat capacity, does not require large-scale manufacturing equipment, and can significantly reduce the operation cost.
In particular, the sleeve structure for a cylindrical furnace according to the present invention uses a plurality of plate members made of a carbon/carbon composite material, and the plurality of plate members are mechanically coupled to each other by a plurality of coupling members made of a carbon/carbon composite material to form a polygonal columnar body having a substantially cylindrical shape.
Further, since the carbon/carbon composite material has characteristics of high strength, high rigidity, and high toughness, the sleeve structure can be made thin and light, and the heat capacity of the sleeve structure can be minimized. As a result, the thermal inertia of the entire furnace body can be reduced, and the thermal efficiency of the furnace body can be significantly improved.
In the sleeve structure according to the present invention, since the flat plate-like carbon/carbon composite material is used as a main component, conventional manufacturing facilities can be used, and particularly large-scale manufacturing facilities are not required.
As a result, the sleeve structure according to the present invention can reduce not only the manufacturing cost of the sleeve structure but also the power consumption of the furnace body (the operating cost of the furnace body) and the repair cost of the furnace body (the replacement cost of the sleeve structure).
Drawings
Fig. 1 shows a sleeve structure for a cylindrical furnace formed into a polygonal columnar body according to a first embodiment of the present invention. Specifically, (a) of fig. 1 is a perspective view of a cylindrical furnace formed into a polygonal columnar body assembled with a sleeve structure, fig. 1 (b) is a view showing an arrow X of fig. 1(a), and fig. 1 (c) is a view showing an arrow Y of fig. 1 (a). Fig. 1(d) is an exploded perspective view of a sleeve structure for a cylindrical furnace formed into a polygonal columnar body, fig. 1 (e) is a view showing an arrow X of fig. 1(d), and fig. 1 (f) is a view showing an arrow Y of fig. 1 (d).
Fig. 2 shows a sleeve structure for a cylindrical furnace formed into a polygonal columnar body according to a second embodiment of the present invention. Specifically, (a) of fig. 2 is a perspective view of the assembly of the sleeve structure for the cylindrical furnace formed into the polygonal columnar body, fig. 2 (b) is a view showing an arrow X of fig. 2(a), and fig. 2 (c) is a view showing an arrow Y of fig. 2 (a). Fig. 2(d) is an exploded perspective view of the sleeve structure for a cylindrical furnace formed into a polygonal columnar body, fig. 2 (e) is a view showing an arrow X of fig. 2(d), and fig. 2 (f) is a view showing an arrow Y of fig. 2 (d).
Fig. 3 shows a sleeve structure for a cylindrical furnace formed into a polygonal columnar body according to a third embodiment of the present invention. Specifically, (a) of fig. 3 is a perspective view of the assembly of the sleeve structure for the cylindrical furnace formed into the polygonal columnar body, fig. 3 (b) is a view showing an arrow X of fig. 3(a), and fig. 3 (c) is a view showing an arrow Y of fig. 3 (a). Fig. 3(d) is an exploded perspective view of the sleeve structure for a cylindrical furnace formed into a polygonal columnar body, fig. 3 (e) is a view showing an arrow X of fig. 3(d), and fig. 3 (f) is a view showing an arrow Y of fig. 3 (d).
Detailed Description
The following describes a sleeve structure for a cylindrical furnace (including a vertical cylindrical furnace and a horizontal cylindrical furnace) formed into a polygonal cylindrical body made of a carbon/carbon composite material according to the present invention.
A carbon/carbon composite material (also referred to as a C/C composite material) is a fiber-reinforced composite material in which carbon fibers as reinforcing fibers are hardened with graphite or a matrix of carbon, and has several times higher strength and elastic modulus than conventional carbon materials or graphite materials, and is excellent in heat resistance, wear resistance, and toughness. Carbon/carbon composites are also known as materials having high specific strength and high specific stiffness because they have a small specific gravity and high strength and stiffness (elastic modulus).
Further, since the carbon/carbon composite material has high thermal conductivity and a small thermal expansion coefficient, when used as a structural member, it has high thermal stability, and even when heated and cooled repeatedly, it has characteristics of high thermal stability and being hardly deformed.
In the sleeve structure according to the present invention, a flat-plate-like carbon/carbon composite material is mainly used, and a material in which carbon fibers are oriented in two directions in a plane, a material in which carbon fibers (short fibers) are oriented at random in a plane, a material in which carbon fibers are woven fabrics (plain or satin) and laminated in a plate thickness direction, or the like can be used.
In addition, as a method for producing a carbon/carbon composite material, a method for producing a sheet-like intermediate material made of short-fiber carbon fibers, binder pitch powder, coke powder, and a binder can be used in addition to a resin carbonization method, a CVD method, a production method using a pre-made yarn, and the like.
Fig. 1 shows a sleeve structure 10 for a cylindrical furnace formed into a polygonal columnar body according to a first embodiment of the present invention.
The sleeve structure 10 is composed of eight plate members 11 made of a carbon/carbon composite material and eight connecting members 12 made of a carbon/carbon composite material.
Each plate member 11 is coupled at both side ends thereof to the coupling member 12 via fasteners. The connecting member 12 is a member for connecting the side end portions of the adjacent plate members 11 to each other, and extends in the axial direction of the sleeve structure 10. The cross-sectional shape of the coupling member 12 may be, for example, a triangle, but is not limited thereto.
As the fastening member for joining the plate members 11 and the coupling members 12, for example, a bolt or a nut made of heat-resistant steel may be used, and a bolt or a nut made of a carbon/carbon composite material may be used.
Further, a bolt, a nut, and a heat-resistant adhesive (e.g., a ceramic adhesive) may be used in combination, or may be combined with a heat-resistant adhesive alone. When bolts or nuts are used as the fasteners, a plurality of positions in a row or a plurality of positions in a row may be fixed to the joint portion between one plate member 11 and one coupling member along the central axis of the sleeve structure.
By constructing the sleeve structure in this manner, a substantially cylindrical sleeve structure along the inner diameter of the cylindrical furnace can be obtained. The sleeve structure 10 described here is an example of the sleeve structure of the present invention, and the number, size, and the like of the plate members 11 and the coupling members 12 can be freely selected.
Fig. 2 shows a sleeve structure 20 for a cylindrical furnace formed into a polygonal columnar body according to a second embodiment of the present invention.
The sleeve structure 20 includes four sets of a housing structure unit 100 made of a carbon/carbon composite material and four coupling members 22 made of a carbon/carbon composite material.
The case structural unit 100 according to the second embodiment of the present invention is configured by two plate members 21 made of a carbon/carbon composite material and one rigid joint member 23 made of a carbon/carbon composite material. The rigid joining member 23 is a member for rigidly joining the two plate members 21 made of a carbon/carbon composite material in a form abutting against each other at a predetermined angle, and extends in the axial direction of the sleeve structure 20.
The cross-sectional shape of the rigid joint member 23 of the case structure unit 100 may be, for example, a triangle, as in the case of the coupling member 22, but is not limited thereto. In order to rigidly couple the two plate members 21 to each other by the rigid coupling member 23, the width of the rigid coupling member 23 is preferably larger than the width of the coupling member 22. As shown in fig. 2, the rigid joint member 23 may include one or more beads 23-1 extending in the circumferential direction.
As the fastener for joining the two plate members 21 to the rigid joint member 23 and the reinforcing bead 23-1, for example, a bolt or a nut made of heat-resistant steel may be used, and a bolt or a nut made of a carbon/carbon composite material may be used.
Further, in order to make the joint of the two plate members 21, the rigid joint member 23, and the reinforcing ribs 23-1 more rigid, a bolt, a nut, and a heat-resistant adhesive (for example, a ceramic adhesive) may be used in combination. When bolts or nuts are used as the fasteners, a plurality of points in a row or a plurality of points in a row may be fixed to the joint portion between one plate member 21 and one rigid joint member 23 along the central axis of the sleeve structure.
The case structure unit 100 configured as described above has a cross-sectional mountain shape (triangular mountain shape).
Next, a method of constructing the sleeve structure 20 by joining the four sets of the case structure units 100 and the four coupling members 22 will be described.
Each housing structure unit 100 is coupled at both side ends thereof to the coupling member 22 via fasteners. The coupling member 22 is a member for coupling the side end portions of the plate members 21 of the adjacent housing structure units 100 to each other, and extends in the axial direction of the sleeve structure 20. The same connecting member 21 as used in the sleeve structure 10 according to the first embodiment can be used as the connecting member 22.
As the fastener for coupling the housing structure units 100 and the coupling member 22, for example, a bolt or a nut made of heat-resistant steel may be used, or a bolt or a nut made of a carbon/carbon composite material may be used.
Further, a bolt, a nut, and a heat-resistant adhesive (e.g., a ceramic adhesive) may be used in combination, or may be combined with a heat-resistant adhesive alone. The method of arranging the bolts and nuts when the bolts and nuts are used as the fasteners can be the same as the method described in the first embodiment.
By constructing the sleeve structure 20 in this manner, a substantially cylindrical sleeve structure 20 along the inner diameter of the cylindrical furnace can be obtained. In the sleeve structure 20 described here, since four sets of the housing structure units 100 are joined together and the two plate members 21 in each housing structure unit 100 are firmly (rigidly) joined by the rigid joining members 23, the cross section of the sleeve structure 20 has four corner portions, that is, characteristics equivalent to a four-corner structure in terms of mechanics, and has excellent structural stability.
Here, the sleeve structure 20 is described as a structure in which the four-unit housing structure units 100 are combined, but the present invention is not limited thereto. For example, the sleeve structure 20 may be constructed by combining three sets of the housing structure units 100 and three coupling members 22.
In this case, the cross section of the sleeve structure 20 has three corner portions, that is, has characteristics mechanically equivalent to a triangular structure, and has more excellent structural stability.
Fig. 3 shows a sleeve structure 30 for a cylindrical furnace formed into a polygonal columnar body according to a third embodiment of the present invention.
The sleeve structure 30 includes three sets of a case structure unit 200 made of a carbon/carbon composite material and three coupling members 32 made of a carbon/carbon composite material.
The case structural unit 200 according to the third embodiment of the present invention is configured by three plate members 31 made of a carbon/carbon composite material and two rigid joint members 33 made of a carbon/carbon composite material. The rigid joining member 33 is a member for rigidly joining two adjacent carbon/carbon composite plate members 31 in a state of abutting against each other at a predetermined angle, and extends in the axial direction of the sleeve structure 30.
The cross-sectional shape of the rigid joint member 33 of the case structure unit 200 may be, for example, a triangle, as in the case of the coupling member 32, but is not limited thereto. In order to rigidly couple the two adjacent plate members 31 by the rigid coupling member 33, the width of the rigid coupling member 33 is preferably larger than the width of the coupling member 32. As shown in fig. 3, the rigid-joint member 33 may be provided with one or more beads 33-1 extending in the circumferential direction, and the beads 33-1 may be arranged so as to straddle two adjacent rigid-joint members 33.
As the fastener for joining the three plate members 31 to the two rigid joint members 33 and the reinforcing beads 33-1, for example, a bolt or a nut made of heat-resistant steel may be used, and a bolt or a nut made of a carbon/carbon composite material may be used.
Further, in order to make the joint of the three plate members 31, the two rigid joint members 33, and the reinforcing ribs 33-1 more rigid, bolts, nuts, and a heat-resistant adhesive (for example, a ceramic adhesive) may be used in combination. When bolts or nuts are used as the fasteners, a plurality of points in a row or a plurality of points in a row may be fixed to the joint portion between one plate member 31 and one rigid joint member 33 along the central axis of the sleeve structure.
The case structure unit 200 configured as described above has a cross-sectional mountain shape (a trapezoidal mountain shape).
Next, a method of constructing the sleeve structure 30 by combining the three sets of the housing structure units 200 and the three coupling members 32 will be described.
Each housing structure unit 200 is coupled to the coupling member 32 at both side ends thereof via fasteners. The coupling member 32 is a member for coupling the side end portions of the plate members 31 of the respective case structure units 200 to each other, and extends in the axial direction of the sleeve structure 30. The same coupling member 21 as used in the sleeve structure 10 according to the first embodiment can be used as the coupling member 32.
As the fastener for coupling each housing structure unit 200 and the coupling member 32, for example, a bolt or a nut made of heat-resistant steel may be used, and a bolt or a nut made of a carbon/carbon composite material may be used.
Further, the heat-resistant adhesive may be used in combination with a bolt, a nut, and a heat-resistant adhesive (for example, a ceramic adhesive), or may be used alone. The method of arranging the bolts and nuts when the bolts and nuts are used as the fasteners can be the same as the method described in the first embodiment.
By constructing the sleeve structure 30 in this manner, a substantially cylindrical sleeve structure 30 along the inner diameter of the cylindrical furnace can be obtained. In the sleeve structure 30 described herein, since three sets of the housing structure units 200 are joined together and the three plate members 31 in each housing structure unit 200 are firmly (rigidly) joined together by the rigid joining members 33, the sleeve structure 30 has three corner portions in cross section, in other words, has characteristics that are mechanically equivalent to a triangular structure, and has excellent structural stability.
Here, the sleeve structure 30 is described as a structure in which the three sets of the housing structure units 200 are coupled to each other, but the present invention is not limited to this. For example, the sleeve structure 30 may be constructed by combining the four sets of the housing structure units 200 and the four coupling members 32.
In this case, the cross section of the sleeve structure 30 has four corner portions, that is, has characteristics equivalent to a four-corner structure in terms of mechanics, and has excellent structural stability.
The plate thicknesses and circumferential lengths (width dimensions) of the plate members 11, 21, 31 used in the sleeve structures 10, 20, 30 according to the first to third embodiments described above are all shown to be the same, but are not limited thereto. At least one of the plate members 11, 21, 31 among the plurality of plate members 11, 21, 31 used in the same sleeve structures 10, 20, 30 may be configured to have a plate thickness and/or a circumferential length of a cross-sectional polygon different from those of the other plate members 11, 21, 31.
Thus, by changing the plate thickness of the plate members 11, 21, 31 in the circumferential direction of the sectional polygon of the sleeve structures 10, 20, 30 to increase the strength of a part of the region, it is possible to receive a non-target load acting on the sleeve structures 10, 20, 30, or by changing the circumferential length of the sectional polygon of the plate members 11, 21, 31 to flatten the shape of the sectional polygon of the sleeve structures 10, 20, 30 to some extent, and it is possible to avoid interference with a structure or the like existing outside the sleeve structures 10, 20, 30 and inside the cylindrical furnace.
Description of the reference numerals
10. 20, 30 … sleeve construction; 11. 21, 31 … plate members; 12. 22, 32 … connecting members; 23. 33 … rigid engagement member; 23-1, 33-1 … reinforcing ribs; 100. 200 … the housing constitutes a unit.

Claims (4)

1. A sleeve structure for a cylindrical furnace, wherein,
the sleeve structure for a cylindrical furnace is composed of a plurality of plate members made of a carbon/carbon composite material and a plurality of connecting members made of a carbon/carbon composite material,
the plurality of plate members are joined to each other via the plurality of connecting members to form a polygonal columnar body.
2. A sleeve structure for a cylindrical furnace, wherein,
comprising a plurality of shell structure units and a plurality of connecting members made of carbon/carbon composite material,
the shell structure unit is formed by rigidly connecting a plurality of plate members made of carbon/carbon composite material, and has a shell structure with a cross-sectional mountain shape,
the plurality of housing structure units are joined to each other via the plurality of coupling members to form a polygonal columnar body.
3. The sleeve structure for a cylindrical furnace according to claim 1 or 2, which is formed into a polygonal columnar body,
at least one of the plurality of plate members has a plate thickness different from plate thicknesses of the other plate members.
4. The sleeve structure for a cylindrical furnace according to any one of claims 1 to 3, which is formed into a polygonal columnar body,
the circumferential length of the cross-sectional polygon of at least one of the plurality of plate members is different from the circumferential length of the cross-sectional polygons of the other plate members.
CN201880082157.XA 2017-12-21 2018-12-19 Sleeve structure for cylindrical furnace made of carbon/carbon composite material Pending CN111492194A (en)

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JP2017244906A JP6960845B2 (en) 2017-12-21 2017-12-21 Muffle structure for cylindrical furnaces made of carbon / carbon composite material
JP2017-244906 2017-12-21
PCT/JP2018/046884 WO2019124466A1 (en) 2017-12-21 2018-12-19 Cylindrical furnace muffle structure made of carbon/carbon composite material

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WO (1) WO2019124466A1 (en)

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CN115677371B (en) * 2022-11-18 2024-02-20 浙江超探碳素新材料有限公司 Carbon-carbon muffle and manufacturing method thereof

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JPH0590298U (en) * 1992-05-15 1993-12-10 株式会社アクロス Box made of carbon fiber carbon composite material
CN201695108U (en) * 2010-04-27 2011-01-05 王敬 Heat shield and ingot casting furnace with same
CN104347454A (en) * 2013-07-26 2015-02-11 光洋热系统股份有限公司 Chamber for heat treatment equipment and heat treatment equipment

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JP6960845B2 (en) 2021-11-05
JP2019113211A (en) 2019-07-11
KR20200087246A (en) 2020-07-20
KR102418743B1 (en) 2022-07-07
DE112018005977T5 (en) 2020-08-06

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