JP3232521U - chimney - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chimney including a chimney unit capable of easily manufacturing and reducing a manufacturing cost, improving smoke leakage prevention performance, and also preventing noise due to the influence of exhaust pulsation. .. SOLUTION: The outer surface of a square tubular heat insulating wall 3 in a chimney unit 1B of a chimney is covered with a steel plate square tubular outer cylinder 4, and the inner surface of the square tubular heat insulating wall 3 is lined with a steel plate square tubular inner cylinder 5. Then, the inner surface of the square tubular heat insulating wall 3 is shielded from the exhaust gas to improve the smoke leakage prevention performance. Further, the square tubular heat insulating wall 3 is divided into front and rear and left and right heat insulating walls 30a to 30d lined with front and rear and left and right lining steel plates 50 to 53, and the steel plate square tubular outer cylinder 4 is front and rear and left and right. The left and right steel plates 40 to 43 can be divided into parts, and these divided parts can be assembled in a predetermined process to cover the outer surface of the square tubular heat insulating wall 3 with the steel plate square tubular outer cylinder 4 without gaps. It is configured. [Selection diagram] Fig. 2

Description

The present invention is suitable for guiding and dissipating the exhaust gas of a gas turbine engine or diesel engine that drives an emergency generator installed in a building, the exhaust gas of a boiler, or the exhaust gas of an industrial waste incinerator related to a chimney. About the chimney.

Conventionally, as a chimney that guides and dissipates exhaust gas from a gas turbine engine or diesel engine that drives an emergency generator installed in a building, exhaust gas from a boiler, or exhaust gas from an industrial waste incinerator to the outside of the building, for example, Patent Documents. The one described in 1 is provided.

The chimney described in Patent Document 1 has a plurality of square tubular chimney units 10 whose axes are oriented vertically (however, the chimney unit of FIG. 11 has its axes oriented horizontally). It is constructed by laminating and connecting the top and bottom. Each chimney unit 10 includes a square tubular heat insulating wall 11 having a vertical axis, and a quadrangular frame body 12 that partially surrounds and restrains the four outer surfaces of the square tubular heat insulating wall 11.

The square tubular heat insulating wall 11 is formed into a square tubular shape by combining both ends of each of the four panels 11a, 11b, 11c, and 11d in the width direction at right angles in an engaging / butt structure in which they are engaged and abutted against each other. ing. The quadrangular frame body 12 includes four L-shaped steels 12A, 12B, 12C, 12D forming four corners and extending in the vertical direction, and a plurality of horizontal members 12E.

In each of the L-shaped steels 12A to 12D, the L-shaped steels 12A and 12D face each other on one diagonal line with the internal angles formed by the two sides 12a, 12a, 12b, 12b, 12c, 12c, 12d, and 12d facing inward. Then, the L-shaped steels 12B and 12C are arranged so as to face each other on one diagonal line remaining to form four corner portions.

Each horizontal member 12E is horizontally bridged to a pair of L-shaped steels 12A and 12B (lower side in FIG. 11) on the front side with an interval of upper and lower (diagonal horizontal in FIG. 11) and joined by welding, and is joined by welding. A pair of L-shaped steels 12C, 12D (upper side in FIG. 11) are horizontally bridged at intervals of upper and lower (diagonal horizontal in FIG. 11) and joined by welding, and a pair of L-shaped steels 12A, 12C on the left side. It is laid horizontally (vertically in FIG. 11) at intervals of the top and bottom (diagonally horizontal in FIG. 11) and joined by welding, and is vertically (diagonally horizontal in FIG. 11) to the pair of L-shaped steels 12B and 12D on the right side. They are joined by welding across horizontally (vertical in FIG. 11) at intervals. For example, flanges 13 are provided at both ends of the chimney unit 10 in the axial direction (one end in the axial direction in FIG. 11). The flange 13 is fastened by a fastening means (not shown) composed of a plurality of bolts and nuts with a packing (not shown) sandwiched between the chimney units 10 directly above and directly below the chimney units 10 facing each other. Therefore, a plurality of bolt holes 13a through which the bolts of the fastening means are inserted are provided.
In addition, in the connection between the chimney units 10 directly above and directly below each other, the L-shaped steels 12A to 12D and the square tubular heat insulating wall 11 in the lower chimney unit 10 are connected to the flange on the upper end side of the lower chimney unit 10. A square annular joint that protrudes upward from (not shown) and projects each L-shaped steel 12A to 12D further upward from the upper end of each L-shaped steel 12A to 12D and the square tubular heat insulating wall 11. Each L-shaped steel 12A to 12D and the square tubular heat insulating wall 11 in the upper chimney unit 10 are projected downward from the flange 13 on the lower end side of the lower chimney unit 10 while being surrounded by a portion (not shown). By fitting the portion to the square annular joint portion, the chimney units 10 directly above and directly below may be connected to each other.

The four outer surfaces of the square tubular heat insulating wall 11 in each chimney unit 10 having the above configuration are only partially surrounded by the quadrangular frame body 12, and most of them are exposed to the atmosphere. Moreover, the four inner surfaces of the square tubular heat insulating wall 11 are exposed to high-temperature exhaust gas. Therefore, over time, spontaneous exhaust gas leakage (referred to as smoke leakage in the following description) occurs in which exhaust gas (smoke) leaks from the four exposed outer surfaces of the square tubular heat insulating wall 11. Further, when a strong external force such as a large shaking due to an earthquake or a large vibration generated by some cause is applied to the square tubular heat insulating wall 11 or deterioration due to aging progresses, cracks are generated and smoke leakage is expanded to surround the chimney. It will adversely affect the atmosphere.

On the other hand, the chimney unit 10 is manufactured by assembling the quadrangular frame body 12 and inserting the quadrangular tubular heat insulating wall 11 into the quadrangular frame body 12. Here, in order to allow the insertion of the quadrangular tubular heat insulating wall 11 into the quadrangular frame body 12, the inner method of the quadrangular frame body 12 is slightly enlarged with a margin with respect to the outer method of the square tubular heat insulating wall 11. There is. Then, when pulsating gas such as the exhaust gas of a diesel engine is exhausted, the panels 11a, 11b, 11c, and 11d of the square tubular heat insulating wall 11 are bent due to the influence of the exhaust pulsation, and high noise such as can-can is generated. ..

On the other hand, the horizontal member 12E of the quadrangular frame body 12 is joined to the L-shaped steels 12A to 12D by welding, so that there are many welded parts. Therefore, it takes a long time to manufacture the quadrangular frame body 12, and the manufacturing cost increases, which in turn increases the cost of each chimney unit 10.

Japanese Patent No. 5798676

The present invention was made in view of the above circumstances, and while it is possible to easily manufacture and reduce the manufacturing cost, the smoke leakage prevention performance is improved, and noise due to the influence of exhaust pulsation is prevented. The purpose is to provide a chimney with a chimney unit that can also be used.

In order to achieve the above object, the chimney according to the present invention is a chimney constructed by stacking a plurality of square tubular chimney units whose axes are oriented vertically, and each chimney unit has a vertical axis. A square tubular heat insulating wall having a vertical axis, a steel plate square tubular outer cylinder having a vertical axis and covering the square tubular heat insulating wall, and an inner surface of the square tubular heat insulating wall lined with exhaust gas. It is equipped with a square tubular inner cylinder made of steel plate that shuts off.

According to the chimney having the above configuration, the square tubular heat insulating wall in each chimney unit is covered with a steel plate square tubular outer cylinder, and the inner surface of the square tubular heat insulating wall is lined with a steel plate square tubular inner cylinder. Since it is shielded from exhaust gas, the smoke leakage prevention performance is improved, and not only spontaneous smoke leakage over time, but also a strong external force load such as an earthquake or unintentional large vibration, or a square cylinder due to aged deterioration, etc. Even if a crack occurs in the heat insulating wall, smoke will not leak.

Further, in the chimney according to the present invention, the steel plate square tubular outer cylinder is formed by combining four separate steel plates, front and rear and four separate steel plates on the left and right, into a square cylinder, and the square tubular heat insulating wall is front and rear. And four separate heat insulating walls on the left and right are combined in a square cylinder shape.

The steel plate square tubular inner cylinder is formed by combining four separate front and rear and left and right lining steel plates that overlap each other on the inner surface of each of the four separate heat insulating walls in a square cylinder shape. At the overlapping portion of each heat insulating wall and the lining steel plate, the lining steel plate is pressed against the inner surface of the heat insulating wall by the heads of a plurality of screws whose shafts are screwed into the heat insulating wall and is lined.

Further, in each of the four separate steel plates constituting the steel plate square tubular outer cylinder,
A pair of left and right bent pieces that are bent forward and face each other are formed on the left and right ends of the front steel plate extending in the vertical direction, and are bent backward and face each other on the left and right ends of the rear steel plate. A pair of bent pieces are formed by extending in the vertical direction.
The inner surface of the front end portion of the left steel plate and the left end surface of the bent piece on the left side of the front steel plate are in contact with each other to form a first contact portion extending in the vertical direction.
The inner surface of the rear end portion of the left steel plate and the left end surface of the bent piece on the left side of the rear steel plate are in contact with each other to form a second contact portion extending in the vertical direction.
A third contact portion is formed in which the inner surface of the front end portion of the right steel plate and the right end surface of the bent piece on the right side of the front steel plate are in contact with each other and extend in the vertical direction.
A fourth contact portion is formed in which the inner surface of the rear end portion of the right steel plate and the right end surface of the bent piece on the right side of the rear steel plate are in contact with each other and extend in the vertical direction.
Each of the first to fourth contact portions is fastened and joined by a plurality of fastening members at intervals in the vertical direction.
In addition, flanges made of L-shaped steel welded to both ends in the axial direction of each of the four separate square tubular outer cylinders made of steel plate form a framework, and chimneys facing each other directly above and below. The frameworks of the flanges of the unit are connected to each other by fastening connection means consisting of bolts and nuts.

In the chimney having the above configuration, the steel plate square tubular outer cylinder can be easily joined by fastening and joining each of the first contact portion to the fourth contact portion with a plurality of fastening members at intervals in the vertical direction. Compared to the method of manufacturing a square tubular outer cylinder made of steel plate by welding and joining the front steel plate and the rear steel plate and the left steel plate and the right steel plate, for example, the manufacturing time is greatly reduced and the manufacturing cost is reduced. Can be reduced. Therefore, it is possible to reduce the manufacturing cost of the chimney unit.

In the present invention, the four separate heat insulating walls on the front, back, left and right are attached to the hard heat insulating wall made of a calcium silicate panel in which the lining steel plate is lined on the inner surface, and the four separate steel plates. It is possible to adopt a configuration consisting of a soft heat insulating wall made of a fiber material laminated on the hard heat insulating wall.

According to this, since the calcium silicate panel is heavy, the weight reduction of the square tubular hard heat insulating wall can be effectively performed by setting the wall thickness of the panel thin. This facilitates the manufacture and handling of the chimney unit and facilitates the construction of the chimney. Moreover, since the calcium silicate panel has high rigidity, it is possible to manufacture a durable chimney unit having high rigidity even if the wall thickness is set to be thin. On the other hand, the deterioration of the heat insulating performance of the square tubular hard heat insulating wall due to the thinning of the calcium silicate panel is compensated by the square tubular soft heat insulating wall having high heat insulating properties. The shaped heat insulating wall can exert an excellent heat insulating effect.

In this invention, each separate lining of each lining steel plate on the inner surface of each hard heat insulating wall is formed by allocating and positioning each lining steel plate on each inner surface of the front, rear, left and right hard heat insulating walls, and then stacking them. This is facilitated by screwing the shaft of the screw from the lining steel plate side into the hard heat insulating wall on the other side. Moreover, since the lining steel plate is firmly lined by the strong pressing force of the screw head, it can be prevented from falling off, and the steel plate square tubular inner cylinder can be prevented from being broken.

according to this,
Step 1: Place the front steel plate horizontally with the soft front insulation wall facing up.
Step 2: The hard pre-insulation wall is laid horizontally on the soft pre-insulation wall with the pre-lining steel plate facing up.
Step 3: A hard left heat insulating wall is vertically erected on the upper surface of the left end of the hard front heat insulating wall with the left steel plate facing right, and a hard right steel plate is turned left on the upper surface of the right end of the hard front heat insulating wall. The insulation wall is erected vertically.
Step 4: A square tubular hard heat insulating wall is formed on the soft front heat insulating wall by placing the hard rear heat insulating wall on the upper surface of the hard left heat insulating wall and the upper surface of the hard right heat insulating wall with the steel plate after lining facing downward. .. Along with this, a steel plate square tubular inner cylinder is lined on the inner surface of the square tubular hard heat insulating wall.
Step 5: Place the rear steel plate horizontally on the upper surface of the hard rear insulation wall of the square tubular hard insulation wall with the soft rear insulation wall facing down.
Step 6: With the soft left heat insulating wall facing right, the front end of the left steel sheet and the left end of the front steel sheet are joined to each other, the rear end of the left steel sheet and the left end of the rear steel sheet are joined to each other, and the soft right heat insulating With the wall facing left, the front end of the right steel plate and the right end of the front steel plate are joined to each other, and the rear end of the right steel plate and the right end of the rear steel plate are joined to each other to form a square tubular outer cylinder made of steel plate. It constitutes a square tubular inner cylinder made of steel plate.
Front steel plate with a soft front insulation wall attached, rear steel plate with a soft rear insulation wall attached, left steel plate with a soft left insulation wall attached, right steel plate with a soft right insulation wall attached, etc. Hard front insulation wall lined with pre-lined steel plate, hard rear heat insulating wall lined with post-lined steel plate, hard left heat insulating wall lined with left lining steel plate, hard right heat insulating wall lined with right lining steel plate, etc. By assembling the parts from the steps 1 to 6, the chimney unit can be easily manufactured and the manufacturing cost can be reduced. Moreover, it is no longer necessary to increase the inner method of the square tubular soft heat insulating wall attached to the inner surface of the steel plate square tubular outer cylinder with a margin to the outer method of the square tubular hard heat insulating wall. The four outer surfaces of the tubular hard insulation wall can be covered without gaps by the square tubular soft insulation wall. Therefore, even if pulsating gas such as the exhaust gas of a diesel engine is exhausted, the deflection due to the influence of the exhaust pulsation of the front and rear heat insulating walls and the left and right heat insulating walls of the square tubular hard heat insulating wall is suppressed, and high noise such as can-can is suppressed. Can also be prevented.

According to the chimney according to the present invention, the outer surface of the square tubular heat insulating wall in the chimney unit is covered with a steel plate square tubular outer cylinder, and the inner surface of the square tubular heat insulating wall is lined with a steel plate square tubular inner cylinder. Since it is blocked from exhaust gas, the smoke leakage prevention performance is enhanced, and not only spontaneous smoke leakage over time, but also a strong external force load such as an earthquake or unintentional large vibration, or aged deterioration, etc. Even if a crack occurs in the tubular heat insulating wall, smoke will not leak.

It is a front view which shows the embodiment of the chimney which concerns on this invention partially. It is an enlarged explanatory view which looked at the planar shape of the 1st Embodiment of a chimney unit from the line II-II of FIG. FIG. 2 is an enlarged exploded explanatory view of FIG. It is a perspective view which shows the 1st Embodiment of a chimney unit horizontally tilted. It is an exploded perspective view of FIG. It is a front view of the 1st Embodiment of a chimney unit. It is a right side view of the 1st Embodiment of a chimney unit. (A) to (f) are explanatory views which show the manufacturing process of the chimney unit of 1st Embodiment. It is a perspective view which shows the 2nd Embodiment of a chimney unit horizontally tilted. It is explanatory drawing which looked at the planar shape of the 2nd Embodiment of a chimney unit from the line II-II of FIG. It is a perspective view which shows a part by tilting a conventional chimney unit horizontally.

Hereinafter, preferred embodiments of the chimney according to the present invention will be described with reference to the drawings.
FIG. 1 is a front view partially showing an embodiment of a chimney according to the present invention, FIG. 2 is an explanatory view of a planar shape of a first embodiment of a chimney unit as viewed from lines II-II of FIG. 1, and FIG. 3 is a diagram. 2 is an exploded explanatory view, FIG. 4 is a perspective view showing the first embodiment of the chimney unit horizontally tilted, FIG. 5 is an exploded perspective view of FIG. 4, and FIG. 6 is a front view and a view of the first embodiment of the chimney unit. 7 is a right side view of the chimney unit of the first embodiment, and FIGS. 8A to 8F are explanatory views showing a manufacturing process of the chimney unit of the first embodiment.

In FIG. 1, the chimney 1 has a plurality of square tubular chimney units 1A, 1B, 1C ... The tubular chimney units 1A and 1B and 1B and 1C are fastened to each other by, for example, a fastening connecting means 2 composed of a plurality of bolts and nuts.

The chimney 1 is installed in a vertical position in a stairwell provided inside the building's skeleton (not shown), the upper end of the chimney 1 is projected onto the roof of the building, and the lower end is an emergency installed inside the building. An exhaust system of an exhaust gas source such as a gas turbine engine or a diesel engine for driving a generator for use, or a boiler or an industrial waste incinerator is connected.

In FIGS. 2, 3, 4, and 5, each of the square tubular chimney units 1A, 1B, and 1C has a square tubular heat insulating wall 3 having a vertical axis and a square tubular heat insulating wall 3 having a vertical axis. It includes a steel plate square tubular outer cylinder 4 that covers the outer surface, and a steel plate square tubular inner cylinder 5 that is lined on the inner surface of the square tubular heat insulating wall 3 and shields the inner surface from exhaust gas. On the other hand, a flange F composed of four welded L-shaped steels L1, L2, L3, and L4 is provided on the outer periphery of both ends of the steel plate square tubular outer cylinder 4 in the axial direction. When the chimney units 1A and 1B and 1B and 1C facing each other directly above and below the flange F are connected to each other, the flange F sandwiches a packing (not shown) made of a highly heat-resistant and highly elastic sealing material. It is fastened by the fastening connecting means 2 (see FIG. 1) composed of bolts and nuts. Therefore, a plurality of bolt holes 9 through which the bolts of the fastening connection means 2 are inserted are provided.

The square tubular heat insulating wall 3 of each of the square tubular chimney units 1A, 1B, 1C according to the first embodiment covers the inner square tubular hard heat insulating wall 30 and the outer surface of the square tubular hard heat insulating wall 30. It is provided with a square tubular soft heat insulating wall 31. In each of the square tubular chimney units 1A, 1B, 1C of the first embodiment, the outer surface of the square tubular soft heat insulating wall 31 is covered with the steel plate square tubular outer cylinder 4, and the inner surface of the square tubular hard heat insulating wall 30 is covered. A steel plate square tubular inner cylinder 5 is lined.

According to the chimney 1 having the above configuration, the outer surface of the square tubular heat insulating wall 3 in each chimney unit 1A to 1C, that is, the outer surface of the square tubular soft heat insulating wall 31 is covered with the steel plate square tubular outer cylinder 4. Moreover, the inner surface of the square tubular heat insulating wall 3, that is, the inner surface of the square tubular hard heat insulating wall 30, is lined with a steel plate square tubular inner cylinder 5 to block out exhaust gas, so that the smoke leakage prevention performance is enhanced. .. Therefore, not only spontaneous smoke leakage due to aging, but also leakage even if a crack occurs in the square tubular hard heat insulating wall 30 due to a strong external force load such as an earthquake or unintentional large vibration, or aged deterioration. There is no smoke.

The square tubular hard heat insulating wall 30 is composed of a panel of calcium silicate, and has a hard front heat insulating wall 30a and a hard rear heat insulating wall 30b facing each other in the front and rear, and a hard left heat insulating wall 30c and a hard right heat insulating wall facing each other on the left and right. Four heat insulating walls 30a to 30d of 30d are provided, and both ends of the hard front heat insulating wall 30a, the hard rear heat insulating wall 30b, the hard left heat insulating wall 30c, and the hard right heat insulating wall 30d are engaged with each other and abutted against each other. The square tubular soft heat insulating wall 31 is made of a heat insulating fiber material containing rock wool, glass wool, and carbon cloth, and is composed of a combination of engagement and butt structures at right angles. It is composed of a combination of four soft heat insulating walls 31a to 31d, which are a soft rear heat insulating wall 31b, a soft left heat insulating wall 31c facing each other on the left and right sides, and a soft right heat insulating wall 31d.

With such a configuration, the calcium silicate panel is heavy, and by setting the wall thickness of the panel thin, it is possible to effectively reduce the weight of the square tubular hard heat insulating wall 30. This facilitates the manufacture and handling of the chimney units 1A, 1B, 1C ..., And facilitates the construction of the chimney 1. Moreover, since the calcium silicate panel has high rigidity, it is possible to manufacture durable chimney units 1A, 1B, 1C ... With high rigidity even if the wall thickness is set to be thin. On the other hand, the deterioration of the heat insulating performance of the square tubular hard heat insulating wall 30 due to the thinning of the calcium silicate panel is compensated by the square tubular soft heat insulating wall 31 having high heat insulating properties. The square tubular heat insulating wall 3 can exhibit an excellent heat insulating effect.

In FIGS. 2 to 7, the steel plate square tubular outer cylinder 4 has four steel plates 40 to 43: a front steel plate 40 and a rear steel plate 41 facing each other in the front-rear direction, and a left steel plate 42 and a right steel plate 43 facing each other on the left and right sides. A soft front heat insulating wall 31a having a predetermined thickness is attached to the inner surface of the front steel plate 40 so as not to move relative to each other, and a soft rear heat insulating wall 31b having a predetermined thickness moves relative to the inner surface of the rear steel plate 41. Along with being immovably attached, a soft left heat insulating wall 31c having a predetermined thickness is attached to the inner surface of the left steel plate 42 so as to be relatively immovable, and a soft right heat insulating wall 31d having a predetermined thickness is relatively immovable on the inner surface of the right steel plate 43. The soft heat insulating walls 31a to 31d are combined with each other in accordance with the configuration of the steel plate square tubular outer cylinder 4 which is attached to the above four steel plates 40 to 43 in combination with each other to form a square tubular soft heat insulating material. A wall 31 is formed, and the square tubular soft heat insulating wall 31 covers the square tubular hard heat insulating wall 30, and the steel plate square tubular inner cylinder 5 is a hard front heat insulating wall of the square tubular hard heat insulating wall 30. The lining front steel plate 50 lined on the inner surface of 30a, the lining back steel plate 51 lined on the inner surface of the hard rear heat insulating wall 30b, the lining left steel plate 52 lined on the inner surface of the hard left heat insulating wall 30c, and the hard right heat insulating wall. It is composed of a lining right steel plate 53 lined on the inner surface of 30d.

In other words, the square tubular heat insulating wall 3 shown in FIG. 2 is configured by combining four separate front and rear and left and right heat insulating walls in a square tubular shape, and four separate front and rear and left and right heat insulating walls. The wall is composed of a hard heat insulating wall and a soft heat insulating wall superposed on the hard heat insulating wall. Specifically, in FIG. 2, one heat insulating wall is formed by a hard heat insulating wall 31a and a soft heat insulating wall 30a superposed on the hard heat insulating wall 31a, and another is formed by the hard heat insulating wall 31b and the soft heat insulating wall 30b superposed on the hard heat insulating wall 31b. One heat insulating wall is constructed, and yet another heat insulating wall is formed by the hard heat insulating wall 31c and the soft heat insulating wall 30c superposed on the hard heat insulating wall 31d, and the hard heat insulating wall 31d and the soft heat insulating wall superposed on the hard heat insulating wall 31d. The remaining one insulating wall is further constructed by 30d.

Next, the assembly of each square tubular chimney unit 1A to 1C will be described.
The front steel plate 40 to which the soft front heat insulating wall 31a is pasted, the rear steel plate 41 to which the soft rear heat insulating wall 31b is pasted, the left steel plate 42 to which the soft left heat insulating wall 31c is pasted, and the soft right heat insulating wall 31d are pasted. Right steel plate 43, hard front heat insulating wall 30a lined with front steel plate 50, hard rear heat insulating wall 30b lined with back steel plate 51, hard left heat insulating wall 30c lined with left steel plate 52, right lining In a state where each part such as the hard right heat insulating wall 30d lined with the steel plate 53 is disassembled,

Step 1: The front steel plate 40 is placed horizontally with the soft front heat insulating wall 31a facing upward [FIG. 8 (a)].
Step 2: With the lining front steel plate 50 facing upward, the hard front heat insulating wall 30a is horizontally stacked on the soft front heat insulating wall 31a [FIG. 8 (b)].
Step 3: The hard left heat insulating wall 30c is vertically erected on the upper surface of the left end portion of the hard front heat insulating wall 30a with the lining left steel plate 52 facing right, and the lining right steel plate 53 is placed on the upper surface of the right end portion of the hard front heat insulating wall 30a. A rigid right heat insulating wall 30d is vertically erected with the wall facing left [FIG. 8 (c)].
Step 4: On the upper surface of the hard left heat insulating wall 30c and the upper surface of the hard right heat insulating wall 30d, the hard rear heat insulating wall 30b is placed over the upper surface of the hard right heat insulating wall 30d with the steel plate 51 facing downward, and the square tubular hard is placed on the soft front heat insulating wall 31a. The heat insulating wall 30 is configured [FIG. 8 (d)]. Along with this, a steel plate square tubular inner cylinder 5 is lined on the inner surface of the square tubular hard heat insulating wall 30.
Step 5: The rear steel plate 41 is placed horizontally on the upper surface of the hard rear heat insulating wall 30b of the square tubular hard heat insulating wall 30 with the soft rear heat insulating wall 31b facing downward [FIG. 8 (e)].
Step 6: The front end portion of the left steel plate 42 and the left end portion of the front steel plate 40 are fastened and joined to each other with the soft left heat insulating wall 31c facing right, and the rear end portion of the left steel plate 42 and the left end portion of the rear steel plate 41 are joined to each other. The front end portion of the right steel plate 43 and the right end portion of the front steel plate 40 are fastened and joined to each other with the soft right heat insulating wall 31d facing left, and the rear end portion of the right steel plate 43 and the right end portion of the rear steel plate 41 are fastened and joined. Are fastened and joined to each other to form a steel plate square tubular outer cylinder 4 and a steel plate square tubular inner cylinder 5 [FIG. 8 (d)].

In this way, each chimney unit 1A, 1B, 1C has a front steel plate 40 to which the soft front heat insulating wall 31a is attached, a rear steel plate 41 to which the soft rear heat insulating wall 31b is attached, and a soft left heat insulating wall 31c. Left steel plate 42, right steel plate 43 to which soft right heat insulating wall 31d is attached, hard front heat insulating wall 30a lined with pre-lining steel plate 50, hard rear heat insulating wall 30b lined with post-lined steel plate 51, lining left Each part such as the hard left heat insulating wall 30c lined with the steel plate 52 and the hard right heat insulating wall 30d lined with the right steel plate 53 can be easily manufactured by assembling from the steps 1 to 6. Therefore, the manufacturing cost of each chimney unit 1A, 1B, 1C can be reduced. Moreover, it is necessary to increase the inner method of the square tubular soft heat insulating wall 31 attached to the inner surface of the steel plate square tubular outer cylinder 4 with a margin for the outer method of the square tubular hard heat insulating wall 30. Therefore, the four outer surfaces 3a to 3d of the square tubular hard heat insulating wall 30 can be surrounded by the square tubular soft heat insulating wall 31 without any gap. As a result, even if pulsating gas such as the exhaust gas of a diesel engine is exhausted, the front and rear heat insulating walls 30a and 30b and the left and right heat insulating walls 30c and 30d of the square tubular hard heat insulating wall 30 are bent due to the influence of the exhaust pulsation. Can be suppressed and high noise such as pulsation can be prevented.

In FIGS. 2 to 7 and 8 (d), a bent piece 40a bent forward is formed at the left end of the front steel plate 40 in the steel plate square tubular outer cylinder 4 and extends in the vertical direction. At the right end of the steel plate 40, bent pieces 40b bent forward are formed so as to extend in the vertical direction, and these are opposed to each other on the left and right, and the left end of the rear steel plate 41 in the steel plate square tubular outer cylinder 4 is formed. A bent piece 41a bent backward is formed so as to extend in the vertical direction, and a bent piece 41b bent backward is formed at the right end portion of the rear steel plate 41 so as to extend in the vertical direction. The left end surface of the left steel plate 42 and the left end surface of the left bent piece 40a of the front steel plate 40 are in contact with each other to form a first contact portion 4A extending in the vertical direction, which are opposed to each other on the left and right sides, and are left. The inner surface of the rear end portion of the steel plate 42 and the left end surface of the bent piece 41a on the left side of the rear steel plate 41 are in contact with each other to form a second contact portion 4B extending in the vertical direction, and the inner surface of the front end portion of the right steel plate 43 is formed. And the right end faces of the right end face of the front steel plate 40 are in contact with each other to form a third contact portion 4C extending in the vertical direction, and the inner surface of the rear end portion of the right steel plate 43 and the right end surface of the rear steel plate 41 are bent. The right end faces of the pieces 41b are in contact with each other to form a fourth contact portion 4D extending in the vertical direction, and the contact portions 4A to 4D are bolts and nuts that are fastened at intervals in the vertical direction. (However, the illustration of the nut is omitted), and the fastening is joined by a plurality of fastening members 6.

As described above, the steel plate square tubular outer cylinder 4 can be easily joined by fastening and joining each of the first contact portion 4A to the fourth contact portion 4D with a plurality of fastening members 6 at intervals in the vertical direction. For example, compared with the method of welding and joining the front steel plate 40 and the rear steel plate 41 and the left steel plate 42 and the right steel plate 43 to manufacture the square tubular outer cylinder 4 made of steel plate, the manufacturing time is significantly shortened. It is possible to reduce the production cost. Therefore, each chimney unit 1A to 1C can be manufactured at low cost.

Here, steel girders are already installed in the skeleton of the building described above at predetermined intervals in the vertical direction, and a plurality of holding members near the upper ends of the chimney units 1A, 1B, and 1C are provided on these steel girders. They are connected to each other via the chimney 1 to prevent the chimney 1 from collapsing. The tip of each holding member is fastened to the steel girder, and the base end is joined near the upper end of each chimney unit 1A to 1C, and is horizontal to the steel girder and near the upper end of each chimney unit 1A to 1C. It is erected in.
In each chimney unit 1A to 1C of the chimney 1 according to the present invention, since the first contact portion 4A to the fourth contact portion 4D are formed in the steel plate square tubular outer cylinder 4, the position of the steel girder is controlled. Then, if the bolt holes are formed horizontally through the upper ends of the first contact portion 4A to the fourth contact portion 4D by adjusting the site, each holding member fastens the tip portion to the steel girder. By fastening the bolts that insert the base end into the bolt holes and tighten the nuts, they are fastened and joined near the upper ends of the first contact portion 4A to the fourth contact portion 4D, and the steel girder and each chimney unit 1A are fastened and joined. The work of erection horizontally near the upper end of ~ 1C can be easily performed.

Each of the lining front steel plate 50, the lining rear steel plate 51, the lining left steel plate 52, and the lining right steel plate 53 constituting the square tubular inner cylinder 5 made of steel plate is made of stainless steel plate. Then, the lining front steel plate 50 is the head 8b of each of the plurality of screws 8 in which the shaft portion 8a is screwed from the lining front steel plate 50 side with respect to the inner surface of the hard front heat insulating wall 30a in the square tubular hard heat insulating wall 30. The lining post-steel plate 51 is pressed against the inner surface of the hard rear heat insulating wall 30b by the heads 8b of the plurality of screws 8 into which the shaft portion 8a is screwed from the lining post-steel plate 51 side. The lining left steel plate 52 is pressed against the inner surface of the hard left heat insulating wall 30c by the heads 8b of the plurality of screws 8 into which the shaft portion 8a is screwed from the lining left steel plate 52 side. The lining right steel plate 53 is lined by being pressed against the inner surface of the hard right heat insulating wall 30d by the head 8b of each of the plurality of screws 8 into which the shaft portion 8a is screwed from the lining right steel plate 53 side. There is. In the first embodiment, the tip of the screw 8 is screwed into a stainless steel backing plate (not shown) arranged on the outer surface of each square tubular hard heat insulating wall 30 to obtain a strong fastening force. ing.

According to this, as for each separate lining of each lining steel plate 50 to 53 on the inner surface of each hard heat insulating wall 30a to 30d, each lining steel plate 50 to 53 is separately distributed to the inner surface of each hard front heat insulating wall 30a to 30d. After positioning and stacking, the work is facilitated by screwing the shaft portion 8a of the screw 8 from each lining steel plate 50 to 53 side into the hard heat insulating wall on the mating side. Moreover, since each of the lining steel plates 50 to 53 is firmly lined by the strong pressing force of the head portion 8b of the screw 8, it is possible to prevent the steel plate from falling off and prevent the steel plate square tubular inner cylinder 5 from being broken.

In other words, the separate linings of the lining steel plates 50 to 53 on the hard heat insulating walls 30a to 30d are formed by positioning the lining front steel plates 50 on the inner surface of the hard front heat insulating walls 30a and stacking them, and then from the lining front steel plate 50 side. After screwing the shaft portion 8a of the screw 8 into the hard front heat insulating wall 30a and positioning and stacking the lining rear steel plate 51 on the inner surface of the hard rear heat insulating wall 30b, the shaft portion 8a of the screw 8 is hard from the lining back steel plate 51 side. After screwing into the rear heat insulating wall 30b and positioning the lining left steel plate 52 on the inner surface of the hard left heat insulating wall 30c and stacking them, the work of screwing the shaft portion 8a of the screw 8 into the hard left heat insulating wall 30c from the lining left steel plate 52 side. The lining right steel plate 53 is positioned and stacked on the inner surface of the hard right heat insulating wall 30d, and then the shaft portion 8a of the screw 8 is screwed into the hard right heat insulating wall 30d from the lining right steel plate 53 side. Further, since each of the lining steel plates 50 to 53 is made of a stainless steel plate having high corrosion resistance, erosion by exhaust gas is prevented.

Next, a second embodiment of the chimney unit will be described.
FIG. 9 is a perspective view showing the second embodiment of the chimney unit tilted horizontally, and FIG. 10 is an explanatory view of the planar shape of the second embodiment of the chimney unit as viewed from line II-II of FIG.
The same parts as those in the first embodiment are designated by the same reference numerals, and the description of the structure and operation of the overlapping members will be omitted.

In FIGS. 9 and 10, the chimney units 1A, 1B, 1C ... Of the second embodiment are the square tubular soft heat insulating walls 31 used in the chimney units 1A, 1B, 1C ... Of the first embodiment described above. Is omitted. The chimney units 1A, 1B, 1C ... Of the second embodiment in which one member (square tubular soft heat insulating wall 31) is reduced in this way is the same as the chimney units 1A, 1B, 1C ... Of the first embodiment. High smoke leakage prevention performance can be obtained. Here, the chimney 1 that emits the high-temperature exhaust gas may be constructed by the chimney units 1A, 1B, 1C ... Of the first embodiment, and the chimney 1 that emits the low-temperature exhaust gas may be constructed by the chimney unit 1A of the second embodiment. , 1B, 1C ... In the second embodiment, the tip of the screw 8 is screwed into the steel plate square tubular outer cylinder 4 to obtain a strong fastening force.

The chimney 1 according to the present invention is not limited to each of the above-described embodiments, and can be structurally deformed as long as it does not deviate from the purpose and technical idea.

The chimney of the present invention is useful as a chimney that dissipates exhaust gas from a gas turbine engine or diesel engine that drives an emergency generator, exhaust gas from a boiler, or exhaust gas from an industrial waste incinerator to the outside.

1 Chimney 1A Chimney unit 1B Chimney unit 1C Chimney unit 3 Square tubular insulation wall 30 Square tubular hard insulation wall 30a Hard front insulation wall 30b Hard rear insulation wall 30c Hard left insulation wall 30d Hard right insulation wall 31 Square tube soft insulation Wall 31a Soft front insulation wall 31b Soft rear insulation wall 31c Soft left insulation wall 31d Soft right insulation wall 4 Steel plate square tubular outer cylinder 40 Front steel plate 40a Forward bending piece 40b Forward bending piece 41 Rear steel plate 41a Back bending piece 41b Backward bending piece 4A 1st contact part 4B 2nd contact part 4C 3rd contact part 4D 4th contact part 5 Steel plate square tubular inner cylinder 50 Front steel plate lining 51 Steel plate after lining 52 Left steel plate lining 53 Lined right steel plate 8 screws 8a shaft 8b head

Claims (2)

A chimney constructed by stacking multiple square tubular chimney units with their axes oriented vertically.
Each chimney unit has a square tubular heat insulating wall having a vertical axis, a steel plate square tubular outer cylinder having a vertical axis and covering the square tubular heat insulating wall, and an inner surface of the square tubular heat insulating wall. It is equipped with a steel plate square tubular inner cylinder that is lined and shields the inner surface from exhaust gas.
The steel plate square tubular outer cylinder is composed of four separate steel plates, front and rear and left and right, combined into a square cylinder.
The square tubular heat insulating wall is formed by combining four separate front and rear and left and right heat insulating walls in a square tubular shape.
The steel plate square tubular inner cylinder is composed of four separate front and rear and left and right lining steel plates overlapping each inner surface of each of the four separate heat insulating walls in a square tubular shape. At the overlapping point between the heat insulating wall and the lining steel plate, the lining steel plate is pressed against the inner surface of the heat insulating wall by the heads of a plurality of screws whose shafts are screwed into the heat insulating wall and is lined.
In each of the four separate steel plates constituting the steel plate square tubular outer cylinder,
A pair of left and right bent pieces that are bent forward and face each other are formed on the left and right ends of the front steel plate extending in the vertical direction, and are bent backward and face each other on the left and right ends of the rear steel plate. A pair of bent pieces are formed by extending in the vertical direction.
The inner surface of the front end portion of the left steel plate and the left end surface of the bent piece on the left side of the front steel plate are in contact with each other to form a first contact portion extending in the vertical direction.
The inner surface of the rear end portion of the left steel plate and the left end surface of the bent piece on the left side of the rear steel plate are in contact with each other to form a second contact portion extending in the vertical direction.
A third contact portion is formed in which the inner surface of the front end portion of the right steel plate and the right end surface of the bent piece on the right side of the front steel plate are in contact with each other and extend in the vertical direction.
A fourth contact portion is formed in which the inner surface of the rear end portion of the right steel plate and the right end surface of the bent piece on the right side of the rear steel plate are in contact with each other and extend in the vertical direction.
Each of the first to fourth contact portions is fastened and joined by a plurality of fastening members at intervals in the vertical direction.
Flange made of L-shaped steel welded to both ends in the axial direction of each of the four separate square tubular outer cylinders made of steel plate constitutes a frame, and flanges of chimney units directly above and directly below each other. A chimney characterized in that the frames of the above are connected by a fastening connecting means consisting of bolts and nuts. In the chimney according to claim 1.
The front and rear and four separate heat insulating walls on the left and right are a hard heat insulating wall made of a panel of calcium silicate having the lining steel plate lined on the inner surface, and the hard heat insulating wall attached to each of the four separate steel plates. A chimney consisting of a soft heat insulating wall made of fiber material stacked on the wall.

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