JP2001056114A - Chimney unit and chimney system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chimney unit resistant to rapid temperature rise and capable of being raised to a target temperature in a short time by winding a heat insulation layer around an internal cylinder composed of a compound material of steel, carbon fiber and carbon matrix and the like and providing an external cylinder around the outer periphery of the heat insulation layer with an air layer therebetween. SOLUTION: The chimney unit 10 is composed of an internal cylinder body 11, a heat insulation layer 13 wound around the outer periphery of the internal cylinder body 11 through an adhesive layer 12 of heat-resistant inorganic adhesive and the like, and an external cylinder body 14 provided at the outer periphery of the heat insulation layer 13 through an air layer 15 and the like. The internal cylinder body 11 composed of steel material having excellent heat- resistance to high temperature and acid- and corrosion-resistance against acid gas or moisture residing in the exhaust gas, a compound material of carbon fiber and carbon matrix, a ceramics material or the like, is formed in a shape of, for example, a cylinder or a rectangular cylinder. The heat insulation layer 13 is composed of, for example, a heat insulating material made of an inorganic fiber or an inorganic porous heat insulating material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chimney unit to be embedded and a chimney device using the chimney unit.

[0002]

2. Description of the Related Art Conventionally, a chimney installed in a building is provided with a space between the chimney, a vehicle, and a wall to form an air layer, thereby improving a heat insulating effect. However, the conventional embedded chimney unit uses the heat insulating material to a certain thickness and uses it up to about 600 degrees without considering the adverse effect of temperature on the vehicle body. The present applicant has disclosed a steel chimney unit for a building in which a heat insulating layer is wound around an outer peripheral portion of a tubular body made of a heat-resistant and corrosion-resistant steel material, and a coating layer is provided on a surface of an outer peripheral portion of the heat insulating layer. We proposed a chimney device that used a slab.

[0003]

The above-mentioned chimney unit made of steel for a building and a chimney device using the same can solve the problem of peeling of the inner lining surface, withstand the temperature rise and raise the temperature to the target temperature in a short time. The service life can be extended, and it is suitable for installing a small-diameter chimney for buildings at relatively low temperatures.However, when the temperature is high and the diameter becomes large, the temperature inside the There is a possibility that the thermal stress on the concrete may have an adverse effect such as cracking.

[0004] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a chimney unit and a chimney device capable of withstanding a rapid temperature increase, raising the temperature to a target temperature in a short time, extending the service life, and preventing the adverse effect of heat on surrounding concrete.

[0005]

[Means for Solving the Problems]

In order to achieve the above object, a chimney unit according to the present invention comprises a heat-resistant, acid-resistant and corrosive steel material, a composite material of carbon fiber and carbon matrix or a ceramic material having a fixed length. An inner cylinder main body formed in, and a heat insulation layer wound around the outer peripheral portion of the inner cylinder main body,
An outer cylinder body provided on an outer peripheral portion of the heat insulating layer with an air layer interposed therebetween is provided. By using a heat-resistant, acid-resistant and corrosion-resistant material for the inner cylinder body, it can withstand a sudden temperature rise and rise to the target temperature in a short time, and its service life can be extended, and the inner cylinder body By providing a heat insulating layer and an air layer between the double pipe structure and the outer cylinder main body, it is possible to prevent adverse effects due to heat on surrounding concrete.

The inner cylinder main body and the outer cylinder main body each include a connecting member for connecting members projecting from the outer peripheral surface of the upper and lower inner cylinder main bodies and the inner peripheral surface of the outer cylinder main body to each other. It is possible to absorb expansion and contraction due to thermal expansion 2
This is preferable because a heavy pipe structure can be easily realized.

In order to achieve the above object, a chimney unit according to the present invention connects a chimney unit in a vertical direction via a packing, wraps a stop band around the outer cylinder main body at the connection part, and embeds it. It is characterized by becoming. By using a double-pipe chimney unit having a heat insulating layer and an air layer, the heat insulating effect can be increased and the adverse effect of heat on concrete can be prevented.

In order to achieve the above object, another chimney unit according to the present invention is a cylindrical fixed length made of steel, carbon fiber and carbon matrix composite material or ceramic material having heat resistance, acid resistance and corrosion resistance. An inner cylinder main body, a first heat insulation layer wound around the outer periphery of the inner cylinder main body, and a second heat insulation layer disposed on the outer periphery of the first heat insulation layer via an air layer. A heat insulating layer and an outer cylinder main body provided on an outer peripheral portion of the second heat insulating layer are provided. By using a heat-resistant, acid-resistant and corrosion-resistant material for the inner cylinder body, it can withstand a sudden temperature rise and rise to the target temperature in a short time, and its service life can be extended, and the inner cylinder body By providing the first and second heat insulating layers and the air layer between the double tube structure and the outer cylinder main body, it is possible to prevent the adverse effect of heat on concrete.

The inner cylinder main body and the outer cylinder main body each include a connecting member that connects members projecting from the outer peripheral surface of the upper and lower inner cylinder main bodies and the inner peripheral surface of the outer cylinder main body to each other. It is possible to absorb expansion and contraction due to thermal expansion 2
This is preferable because a heavy pipe structure can be easily realized.

According to another aspect of the present invention, there is provided a chimney unit in which a chimney unit is connected in a vertical direction via a packing, and a stop band is wound around the outer periphery of the outer cylinder body at the connection portion and embedded. The feature is that it becomes. By using the double-pipe chimney unit having the first and second heat insulating layers and the air layer, the heat insulation effect can be further increased and the adverse effect of heat on the surrounding concrete can be prevented.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. 1 to 3 are diagrams illustrating a chimney unit according to a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along line AA of the chimney unit in FIG.
FIG. 2 is a view of the chimney unit in FIG.

In these figures, a chimney unit 10 of the first embodiment has an inner cylinder main body 11 formed in a tubular shape with a predetermined length, and an inorganic adhesive having heat resistance attached to an outer peripheral portion of the inner cylinder main body 11. A heat insulation layer 13 wound around an adhesive layer 12 made of an agent or the like, and an air layer 1 around the heat insulation layer 13.
5, and is used, for example, in the construction of a reinforced concrete building or installation of an independent chimney.

The inner cylinder body 11 is made of a steel material such as stainless steel having a heat resistance excellent in high-temperature strength and an acid resistance and a corrosion resistance to an acid gas or moisture present in exhaust gas, or a composite material of carbon fiber and carbon matrix. Or a ceramic material or the like, and is formed in, for example, a cylindrical shape or a rectangular cylindrical shape, and the shape, dimensions, and height, inner diameter, and thickness are determined according to design conditions. For example, when the inner cylinder body 11 is a cylindrical steel material such as stainless steel, the height is 1000
~ 1400mm, inner diameter 500 ~ 600mm, thickness 5
The thickness is determined in consideration of the service life and the corrosion allowance of the steel material. On the inner surface on the lower side of the inner cylinder main body 11, a stopper 20 made of an iron plate or the like in a tubular shape is attached by welding or the like so as to slightly protrude downward.

The heat insulating layer 13 is made of, for example, a heat insulating material obtained by processing an inorganic fibrous material or an inorganic porous heat insulating material, and has a predetermined thickness on the outer peripheral portion of the inner cylinder body 11 via the adhesive layer 12. It is wound around. The thickness of the heat insulating layer 13 is determined by the thermal conductivity of the material and the internal and external temperature conditions. The outer peripheral portion of the heat insulating layer 13 is covered with a metal lath or a cloth or the like, and is pressed by a heat insulating material retainer 17 attached to a plurality of (four in the embodiment) outer peripheral portions of the upper portion and the central portion. Locations (4 locations in the embodiment)
Is supported by a heat insulator receiving member 19 attached to the second member. The upper insulating material retainer 17 is connected to the connecting member 1 described later.
6 is made of a plate material provided along the outer peripheral portion of the heat insulating layer 13, and the heat insulating material retainer 17 at the center is provided with a heat insulating layer 13 attached to an end of the plate material protruding from the outer peripheral portion of the inner cylinder body 11. The heat insulating material receiver 19 is formed of a plate material provided at a lower end portion of the inner cylinder main body 11 along a lower end portion of the heat insulating material 13 and an outer peripheral portion thereof.

The outer cylinder body 14 is a cylindrical body made of a material such as an iron plate having a sufficiently large inner diameter capable of covering the periphery of the heat insulating layer 13. Are arranged so as to form the air layer 15. The outer cylinder main body 14 has the same height and thickness when the inner cylinder main body 11 is cylindrical and has the above-described shape and dimensions. For the inner diameter, for example, the thickness of the air layer 15 is reduced. 90-11
It is determined to be about 0 mm. This outer cylinder body 14
And the inner cylinder body 11 are connected by connecting members 16 and 18 provided on the upper side and the lower side. These connecting members 16 and 18 are protruded at a plurality of locations (the outer peripheral portions on the upper and lower sides of the inner cylinder body 11 and the inner peripheral portions on the upper and lower sides of the outer cylinder body 14, respectively). In the embodiment, the upper and lower plate members (four locations each) are configured to be fastened to each other with bolts 21. The upper connecting member 16 is connected to the inner cylinder body 1 as described above.
A heat insulating material retainer 17 is attached to a plate protruding from the outer peripheral side of the first cylindrical member 1, and an insertion hole of the bolt 21 is elongated so as to absorb a difference in thermal expansion between the inner cylinder main body 11 and the outer cylinder main body 14 in the longitudinal direction. Is formed.

FIG. 4 is a diagram showing a chimney device in which the chimney unit of the first embodiment is embedded in concrete.

In the figure, when the chimney unit 25 is installed by being embedded in concrete 26, the required number of chimney units 10 of the first embodiment are prepared, and one of the chimney units 10 is arranged on the upper side. The shift stopper 20 protruding downward is disposed on the lower side of the other chimney unit 10 and fitted to the upper part of the inner cylinder body 11, and a packing 22 made of a thermal expansion absorbing material such as ceramic wool is provided between the respective end faces. Are connected so as to be stacked, and a stop band 23 such as bolting is wound around the outer peripheral portion of the connection portion so as to prevent kneading water or mortar from entering during concrete casting, and embedded in the concrete 26 according to the construction. The gap stopper 20 can prevent infiltration of rainwater or the like that enters the inside of the inner cylinder main body 11 by attaching the lower inner surface of the inner cylinder main body 11 to the upper side by welding.

In the chimney unit 10 having the above structure, the inner cylinder body 11 is made of a steel material such as stainless steel or carbon fiber having heat resistance excellent in high-temperature strength, and acid resistance and corrosion resistance to acidic gas and moisture present in exhaust gas. And since it is made of a composite material of carbon matrix or ceramic material, the problem of peeling like a steel chimney with a conventional lining or a stack of fire-resistant bricks inside the cylindrical body is eliminated, and it withstands a sudden rise in temperature and reaches the target temperature. It can be raised in a short time and its service life can be extended. Further, the chimney unit 10 has a double-pipe structure, in which the heat insulating layer 13 and the air layer 15 are formed between the inner cylinder main body 11 and the outer cylinder main body 14, so that the chimney unit 10 is not provided when only the heat insulating layer 13 is provided. It can improve the heat insulation effect and is suitable for medium-sized chimney units. Therefore, using such a chimney unit 10, the chimney device 2 installed by embedding in concrete 26 according to the construction
No. 5 has a heat-insulating effect of the heat insulation layer 13 and the air layer 15, so that the surrounding concrete 26 embedded in the building does not have an adverse effect such as cracks due to heat. In addition, in the chimney device 25 in which the chimney units 10 are stacked, since the air layer 15 is communicated from the lower side to the upper side, opening the lower side and the upper side allows air to flow and release heat to the outside. Therefore, adverse effects due to heat can be further prevented. Further, a difference in thermal expansion between the inner cylinder main body 11 and the outer cylinder main body 14 can be absorbed by a long hole through which the bolt 21 formed in the connecting member 16 passes, so that no excessive force is applied.

5 to 7 are views for explaining a chimney unit according to a second embodiment of the present invention. FIG. 5 is a longitudinal sectional view, FIG. 6 is a sectional view taken along line CC of FIG. 5, and FIG. FIG. 6 is a view of the chimney unit in FIG.

In these figures, a chimney unit 30 according to the second embodiment has an inner cylinder main body 31 formed in a tubular shape with a predetermined length, and an inorganic adhesive having heat resistance attached to an outer peripheral portion of the inner cylinder main body 31. A first heat insulating layer 33 wound around a first adhesive layer 32 made of an agent or the like, and the first heat insulating layer 33
, An air layer 37 provided on the outer peripheral portion, a second heat insulation layer 36 surrounding the air layer 37, and a second heat insulation layer 36.
And an outer cylinder main body 34 provided around a second adhesive layer 35 made of a heat-resistant inorganic adhesive or the like. The chimney unit 30 is used, for example, when constructing a concrete building or installing an independent chimney.

The inner cylinder main body 31 is made of a steel material such as stainless steel or the like, which has the same high-temperature strength and high heat resistance as the first embodiment, and the acid resistance and corrosiveness to the acidic gas and moisture present in the exhaust gas. It is made of a composite material of fibers and a carbon matrix, a ceramic material, or the like, and is formed in, for example, a cylindrical shape or a rectangular cylindrical shape, and the shape, dimensions, and height, inner diameter, and thickness are determined according to design conditions. For example, when the inner cylinder main body 31 is a cylindrical steel material such as stainless steel, the height is 1000 to 1400 mm and the inner diameter is 600 mm.
The thickness is about 700 mm and the thickness is about 5 to 6 mm. The thickness is determined in consideration of the service life and the corrosion allowance of the steel material. A shift stopper 44 is attached to the lower inner surface of the inner cylinder main body 11 so as to slightly protrude downward as in the first embodiment.

The first and second heat insulating layers 33 and 36 are
Similar to the first embodiment, the first heat insulating layer 33 is wound around the outer peripheral portion of the inner cylinder main body 11 with a certain thickness via the adhesive layer 32, and the second heat insulating layer 36 is It is provided at a constant thickness on the inner peripheral portion of the tube main body 34. These insulation layers 33, 36
Is determined by the thermal conductivity of the material and the internal and external temperature conditions. The outer peripheral portion of the first heat retaining layer 33 and the inner peripheral portion of the second heat retaining layer 36 are respectively covered with a metal lath or a cloth, and attached to a plurality of locations (four locations in the embodiment) of the upper and central outer peripheral portions. Insulation material foot 39,4
0, and the lower end is supported by heat insulating material receivers 42 and 43 attached to a plurality of locations (four locations in the embodiment). The upper heat insulating material retainers 39 and 40 are made of a plate material provided on the connecting member 38 described later along the outer peripheral portion of the first heat insulating layer 33 and the inner peripheral portion of the second heat insulating material 36, and have a central portion. The heat insulating material retainers 39 and 40 are attached to ends of a plate material protruding from an outer peripheral portion of the inner cylinder main body 31 and an inner peripheral portion of the outer cylinder main body 34, respectively. The heat insulating layer 36 is made of a plate material provided along the inner peripheral portion, and the heat insulating material receivers 42 and 43 are made of L-shaped plate materials provided on the inner cylinder main body 31 and the outer cylinder main body 34.

The outer cylinder body 34 is provided with a second heat insulating layer 36 on the inner surface side, and is made of a material such as an iron plate having a sufficiently large inner diameter that can cover the periphery of the first heat insulating layer 36. The first heat insulating layer 33 and the inner surface of the second heat insulating layer 36 are arranged such that an air layer 37 having a certain thickness is formed between the outer surface of the first heat insulating layer 33 and the inner surface of the second heat insulating layer 36. When the inner cylinder main body 31 is cylindrical and has the above-described shape and dimensions, the outer cylinder main body 34 has the same height and thickness.
The thickness of the air layer 37 is determined so as to be about 90 to 110 mm. Between the outer cylinder main body 34 and the inner cylinder main body 31, connection members 38, 4 provided on the upper side and the lower side are provided.
1 attached. These connecting members 38,
Reference numeral 41 denotes a plurality of portions (upper and lower portions in the embodiment) protruding facing the outer peripheral portions on the upper and lower sides of the inner cylinder main body 31 and the inner peripheral portions on the upper and lower sides of the outer cylinder main body 34, respectively. (Four places) plate members are fastened to each other with bolts 45. The upper connecting member 38 is connected to the outer peripheral side of the inner cylinder main body 31 and the outer cylinder main body 3.
4 are respectively provided with heat insulator holders 39 and 40 protruding from the inner peripheral portion.
In order to absorb the difference in thermal expansion between the longitudinal direction and the radial direction orthogonal to the longitudinal direction, an insertion hole of the bolt 45 is formed in the longitudinal direction and the radial direction in a long hole. In the lower connecting member 41, similarly, the insertion hole of the bolt 45 is formed as a long hole in the radial direction so as to absorb the difference in the thermal expansion in the radial direction.

FIG. 8 is a view showing a chimney device in which the chimney unit of the second embodiment is embedded in concrete.

In the figure, when the chimney device 50 is installed by being embedded in concrete 51, the required number of chimney units 30 of the second embodiment are prepared, and one of the chimney units 30 is arranged on the upper side. The shift stopper 44 protruding downward is disposed on the lower side of the other chimney unit 30 and fitted to the upper part of the inner cylinder main body 11, and between the respective end faces from the same thermal expansion absorbing material as in the first embodiment. Are connected so as to be stacked via packings 52 and 53, and a stop band 55 such as a bolt is used to prevent kneading water or mortar from infiltrating into the outer peripheral portion of the connecting portion when concrete is poured.
And embed it in the concrete 51 according to the construction.

In the chimney unit 30 having the above-described structure, the inner cylinder main body 31 is made of a steel material such as stainless steel or carbon fiber having heat resistance excellent in high-temperature strength, and acid resistance and corrosion resistance to acid gas and moisture present in exhaust gas. And since it is made of a composite material of carbon matrix or ceramic material, the problem of peeling like a steel chimney with a conventional lining or a stack of fire-resistant bricks inside the cylindrical body is eliminated, and it withstands a sudden rise in temperature and reaches the target temperature. It can be raised in a short time and its service life can be extended. The chimney unit 30 has a double pipe structure, and a first heat insulation layer 33, an air layer 37, and a second heat insulation layer 36 are sequentially formed between the inner cylinder main body 31 and the outer cylinder main body 34. Therefore, the heat insulation effect can be further improved as compared with the first embodiment, and it is suitable for a large-diameter chimney unit. Therefore, using such a chimney unit 30, the chimney device 50 installed by embedding in the concrete 51 in accordance with the construction makes the first heat insulation layer 33, the air layer 37, and the second heat insulation layer 36 the same. Due to the heat insulation effect, there is no adverse effect such as cracks due to heat on the concrete 51 embedded in the building. Further, in the chimney device 50 in which the chimney units 30 are stacked, since the air layer 37 is communicated from the lower part to the upper part, the air is circulated by opening the lower part and the upper part and the heat is released to the outside. Can be prevented from being adversely affected. Further, the difference in thermal expansion between the inner cylinder main body 31 and the outer cylinder main body 34 can be absorbed by the elongated holes through which the bolts 45 formed in the connecting members 38 and 41 pass, so that no excessive force is applied.

The chimney unit 1 of each of the above embodiments
The cross-sectional shapes and dimensions of the inner cylinder main bodies 11 and 31 of 0 and 30 can be arbitrarily determined according to the building, the overall height of the chimney, and the like.
It is not limited to the embodiment. In addition, between the inner cylinder main bodies 11, 31 and the outer cylinder main bodies 31, 34 constituting the double pipe structure,
Although the example in which the connecting members 16, 17, 38, and 41 are connected has been described, at least the members protruding from the outer peripheral surface of the inner cylinder main body and the inner peripheral surface of the outer cylinder main body on the upper and lower sides are mutually connected. Any structure may be used as long as they are connected, and the shape and number of the members are not limited to the embodiment.

[0029]

As described above, in the chimney unit of the present invention, the inner cylinder main body is formed of a material having high temperature strength and excellent heat resistance and corrosion resistance, and the outer cylinder is provided around the inner cylinder main body and the heat insulating material. By attaching the main body and providing an air layer,
It is possible to withstand a rapid temperature rise and to raise the temperature to the target temperature in a short time, extend the service life, and improve the heat insulation effect by the heat insulating layer and the air layer. A chimney device embedded in concrete using such a chimney unit can prevent adverse effects of heat on surrounding concrete.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a chimney unit according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of the chimney unit of FIG.

FIG. 3 is a view of the chimney unit in FIG.

FIG. 4 is a diagram showing a chimney device in which the chimney unit of the first embodiment is embedded in concrete.

FIG. 5 is a longitudinal sectional view of a chimney unit according to a second embodiment of the present invention.

6 is a sectional view of the chimney unit of FIG. 5 taken along line CC.

FIG. 7 is a view of the chimney unit as viewed in the direction of arrow D.

FIG. 8 is a view showing a chimney device in which a chimney unit according to a second embodiment is embedded in concrete.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Chimney unit 11 Inner cylinder main body 12 Adhesive layer 13 Heat insulation layer 14 Outer cylinder main body 15 Air layer 16, 18 Connection member 17 Heat insulation material press 19 Heat insulation material receiving 20 Displacement prevention 21 Bolt 22 Packing 23 Stop band 25 Chimney device 26 Concrete 30 Chimney unit 31 Inner cylinder main body 32 First adhesive layer 33 First heat insulating layer 34 Outer cylinder main body 35 Second adhesive layer 36 Second heat insulating layer 37 Air layer 38, 41 Connecting member 39, 40 Heat insulator holding member 42, 43 Insulation material holder 44 Slip stopper 45 Bolt 50 Chimney device 51 Concrete 52, 53 Packing 55 Stop band

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahide Kizumi 1-7-1, Hamamatsucho, Minato-ku, Tokyo Tsubozaka Kogyo Co., Ltd. Tokyo Branch (72) Inventor Tsujiharu Tsubozaka Hamamatsucho, Minato-ku, Tokyo 1-7-1 Tsubozaka Kogyo Co., Ltd. Tokyo branch F-term (reference) 3K070 AC01 AC15 AC36

Claims (6)

[Claims] 1. An inner cylindrical body formed of a fixed length of a cylindrical shape made of a heat-resistant, acid-resistant and corrosive steel material, a composite material of carbon fiber and a carbon matrix, or a ceramic material, and the inner cylindrical body. A heat insulation layer wound around the outer periphery of the
A chimney unit comprising: an outer cylinder main body provided on an outer peripheral portion of the heat insulating layer via an air layer. 2. The inner cylinder body and the outer cylinder body are connected to each other by connecting members projecting from the outer peripheral surface of the upper and lower inner cylinder bodies and the inner peripheral surface of the outer cylinder body. The chimney unit according to claim 1, further comprising a member. 3. A chimney device, wherein the chimney unit according to claim 1 is vertically connected via a packing, and a stop band is wound around and embedded around the outer cylinder main body at the connecting portion. 4. An inner cylinder main body formed of a heat-resistant, acid-resistant and corrosive steel material, a composite material of carbon fiber and carbon matrix, or a ceramic material and having a fixed length in the form of a cylinder. A first heat insulation layer wound around the outer periphery of the first heat insulation layer, a second heat insulation layer arranged on the outer periphery of the first heat insulation layer through an air layer, and an outer periphery of the second heat insulation layer. A chimney unit comprising: an outer cylinder main body provided. 5. The inner cylinder body and the outer cylinder body are connected to each other by connecting members projecting from the outer peripheral surface of the upper and lower inner cylinder bodies and the inner peripheral surface of the outer cylinder body. The chimney unit according to claim 4, wherein a member is provided. 6. A chimney device comprising the chimney unit according to claim 4, which is vertically connected via a packing, and a stop band is wound around and embedded around the outer cylinder body at the connection portion.