JP2019105388A - chimney - Google Patents

Abstract

To provide a chimney with a chimney unit where, though production is easily performed to reduce production cost, smoke leakage prevention performance is increased, and further, noise caused by exhaust pulsation can be prevented.SOLUTION: The outer face of a square cylindrical adiabatic wall 3 in the chimney unit of a chimney 1 is covered with a square cylindrical outer tube 4 made of a steel sheet, the inside face of the square cylindrical adiabatic wall 3 is lined with a square cylindrical inner tube 5 made of a steel sheet, and the inside face of the square cylindrical adiabatic wall 3 is shielded from an exhaust gas to increase smoke leakage prevention performance. Further, the square cylindrical adiabatic wall 3 is divided into respective parts of adiabatic walls 30a to 30d in all directions lined with lining steel sheets 50 to 53 in all directions, the square cylindrical outer tube 4 made of a steel sheet is divided into respective parts of steel sheets 40 to 43 in all directions, the divided parts are assembled in a prescribed process, and the outer face of the square cylindrical adiabatic wall 3 can be coated with the square cylindrical outer tube 4 made of a steel sheet without gaps.SELECTED DRAWING: Figure 2

Description

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

  Conventionally, for example, as a chimney that guides and dissipates the exhaust gas from gas turbine engines and diesel engines that drive emergency generators installed in buildings, the exhaust gas from boilers, the exhaust gas from industrial waste incinerators, etc. The one described in 1 is provided.

  The chimney described in Patent Document 1 has a plurality of square cylindrical chimney units 10 partially shown in FIG. 11 with their axes oriented vertically (however, the chimney units in FIG. 11 have their axes oriented horizontally). ) Are constructed by stacking and connecting up and down. Each chimney unit 10 includes a square cylindrical heat insulation wall 11 having a vertical axis, and a square frame 12 partially surrounding and constraining four outer surfaces of the square cylindrical heat insulation wall 11.

  The rectangular cylindrical heat insulating wall 11 is formed into a rectangular cylindrical shape by combining the respective widthwise end portions of the four panels 11a, 11b, 11c and 11d at right angles with each other in an engaged / butted structure engaged with each other. ing. The rectangular frame 12 includes four L-shaped steels 12A, 12B, 12C, 12D which form four corner portions and extend in the vertical direction, and a plurality of horizontal members 12E.

  Each of the L-shaped steels 12A to 12D has the L-shaped steels 12A and 12D opposed to each other on one diagonal line, with the inner angles formed by the two sides 12a, 12a, 12b, 12b, 12c, 12c, 12d and 12d inward. The L-shaped steels 12B and 12C are disposed opposite to each other on the other one diagonal to form four corner portions.

The horizontal members 12E are horizontally joined by welding at a pair of L-shaped steels 12A and 12B on the front side (the lower side in FIG. 11) at upper and lower (in FIG. 11 diagonally in FIG. 11) The pair of L-shaped steels 12C and 12D (upper side in FIG. 11) are horizontally extended at intervals of upper and lower (diagonally horizontal in FIG. 11) and joined by welding, and the left pair of L-shaped steels 12A and 12C In the upper and lower (in FIG. 11 diagonally in FIG. 11), it is bridged horizontally (vertically in FIG. 11) and joined by welding, to the right pair of L-shaped steels 12B and 12D. They are joined horizontally by welding at intervals (vertically in FIG. 11). For example, flanges 13 are provided at both axial ends (one end in the axial direction in FIG. 11) of the chimney unit 10. The flange 13 is fastened by fastening means (not shown) formed of a plurality of bolts and nuts with a packing (not shown) interposed when connecting the chimney units 10 facing each other directly above and directly below. Therefore, a plurality of bolt holes 13a through which bolts of fastening means are inserted are provided.
The chimney units 10 facing each other directly above and directly below are connected with each other by connecting the L-shaped steels 12A to 12D and the square cylindrical heat insulation wall 11 in the lower chimney unit 10 to the flanges on the upper end side of the lower chimney units 10. A quadrilateral annular joint which projects each L-shaped steel 12A to 12D protruding upward more than (not shown) and projects further upward than the upper ends of the respective L-shaped steels 12A to 12D and the rectangular cylindrical heat insulation wall 11 Surround the lower part (not shown) and project the L-shaped steels 12A to 12D and the square cylindrical heat insulating wall 11 in the upper chimney unit 10 further downward than the flange 13 on the lower end of the chimney unit 10 The chimney units 10 facing each other may be connected directly above and directly below by fitting the part into the square annular joint part

  The four outer surfaces of the square cylindrical heat insulating wall 11 in each chimney unit 10 of the above-described configuration are partially surrounded by the rectangular frame 12, and most of them are exposed to the atmosphere. Moreover, the four inner surfaces of the square cylindrical heat insulating wall 11 are exposed to high temperature exhaust gas. Therefore, with the passage of time, a naturally occurring exhaust gas leak (referred to as a smoke in the following description) occurs in which the exhaust gas (smoke) leaks from the exposed four outer surfaces of the square cylindrical heat insulation wall 11. Furthermore, when a strong external force such as a large shaking due to an earthquake or a large vibration caused by some cause is applied to the rectangular cylindrical heat-insulation wall 11 or deterioration due to aging progresses, cracks occur and the smoke is expanded and It will adversely affect the atmosphere.

  On the other hand, the chimney unit 10 is manufactured by the procedure of assembling the square frame 12 and inserting the square cylindrical heat insulation wall 11 into the square frame 12. Here, in order to allow insertion of the rectangular cylindrical heat insulation wall 11 into the rectangular frame 12, the inner method of the rectangular frame 12 is slightly enlarged with a margin to the outer law of the rectangular cylindrical heat insulation wall 11. It is Then, for example, when pulsating gas such as exhaust gas from a diesel engine is exhausted, each panel 11a, 11b, 11c, 11d of the square cylindrical heat insulating wall 11 is bent due to the influence of the exhaust gas pulsation and high noise such as cancan .

  On the other hand, since the horizontal members 12E of the rectangular frame 12 are respectively joined to the L-shaped steels 12A to 12D by welding, there are many welding points. Therefore, the production of the rectangular frame 12 takes a long time, the production cost is increased, and the cost of each chimney unit 10 is increased.

Patent No. 5798676 gazette

  The present invention has been made in view of the above-described circumstances, and is easy to manufacture and can reduce the manufacturing cost while improving the smoke leakage prevention performance and preventing noise due to the influence of exhaust pulsation. It aims at providing a chimney provided with the chimney unit which can also be possible.

In order to achieve the above object, a chimney according to the present invention is a chimney constructed by vertically laminating a plurality of square tubular chimney units whose axes are directed vertically,
Each chimney unit has a square cylindrical heat insulation wall having a vertical axis, a steel plate square cylindrical outer cylinder having a vertical axis and covering the square cylindrical heat insulation wall, and an inner surface of the square cylindrical heat insulation wall It is characterized in that it comprises a steel plate square cylindrical inner cylinder that is lined and shields the inner surface from exhaust gas.

  According to the chimney of the above configuration, the square cylindrical heat insulation wall in each chimney unit is covered with a steel steel square cylindrical outer cylinder, and the inner surface of the square cylindrical heat insulation wall is lined with a steel steel square cylindrical inner cylinder Since it is shielded from exhaust gas, its smoke prevention performance is enhanced, and naturally occurring smoke due to aging, as well as the load of a strong external force such as an earthquake or unwanted large vibration, or the aged deterioration etc. Even if a crack occurs in the heat insulation wall, there is no leak.

The steel plate square cylindrical outer cylinder is configured by combining a front steel plate and a rear steel plate facing each other in the front and back, and a left steel plate and a right steel plate facing each other in the square cylinder shape. A pair of left and right bent pieces that are bent forward and opposite to each other are formed extending in the vertical direction at the left and right ends of the front steel plate of the cylinder, and at the rear steel plate left and right ends of the steel plate square cylindrical outer cylinder, A pair of left and right bent pieces that are bent backward and opposed to each other are formed extending in the vertical direction,
A first contact portion is formed in which the front end portion inner surface of the left steel plate and the left end surfaces of the left bent pieces of the front steel plate abut each other to extend in the vertical direction, and the inner surface of the rear end portion of the left steel plate and the rear The left end faces of the left bent pieces of the steel plate abut each other to form a second contact portion extending in the vertical direction, and the inner surface of the front end portion of the right steel plate and the right end face of the right bent piece of the front steel plate A third contact portion is formed which abuts each other to extend in the vertical direction, and the inner surface of the rear end portion of the right steel plate and the right end face of the right bent piece of the rear steel plate abut each other and extend in the vertical direction The fourth contact portion is configured,
The respective contact portions are fastened and joined by a plurality of fastening members at an interval in the vertical direction.

  As described above, the steel plate square cylindrical outer cylinder can be easily manufactured by fastening and connecting each of the first contact portion to the fourth contact portion with a plurality of fastening members at an interval in the vertical direction. Therefore, for example, compared with the method of welding the front steel plate and rear steel plate, and the left steel plate and the right steel plate by welding, the manufacturing time can be greatly shortened and the manufacturing cost can be reduced. Therefore, the manufacturing cost of the chimney unit can be reduced.

The square cylindrical heat insulation wall includes an inner square cylindrical hard heat insulation wall, and a square cylindrical soft heat insulation wall covering the square cylindrical hard heat insulation wall,
The square cylindrical hard insulation wall is made of calcium silicate panel and is a square tube of a hard front insulation wall and a hard rear insulation wall facing each other at the front and back and a hard left insulation wall and a hard right insulation wall facing each other at the left and right It is composed of a combination of shapes,
The soft heat insulation wall is made of a heat insulation fiber material, and is formed of a combination of a square tube shape of a soft front heat insulation wall and a soft rear heat insulation wall facing each other and a soft left heat insulation wall and a soft right heat insulation wall facing each other on the left and right. It will be done.

  According to this, since the calcium silicate panel is heavy, by setting the thickness of the panel thin, weight reduction of the square cylindrical hard insulating wall can be effectively achieved. This facilitates the manufacture and handling of the chimney unit and facilitates the construction of the chimney. Moreover, since the calcium silicate panel is high in rigidity, even if its thickness is set thin, it is possible to manufacture a strong chimney unit having high rigidity. On the other hand, since the decrease in the insulation performance of the square cylindrical hard insulation wall due to the thin thickness of the calcium silicate panel being set is compensated by the square cylindrical soft insulation wall having high thermal insulation, the square cylinder The heat insulating wall can exhibit excellent heat insulating effect.

In the chimney according to the present invention, the soft front heat insulation wall is attached to the inner surface of the front steel plate, and the soft rear heat insulation wall is bonded to the inner surface of the rear steel plate. The heat insulation wall is stuck and the soft right heat insulation wall is stuck on the inner surface of the right steel plate,
According to the configuration of the steel-plate-made square-cylindrical outer cylinder formed by combining the steel-plate-shaped square-cylindrical-shaped steel plates, the soft-insulation walls are combined with each other to form a square-cylindrical soft-insulation wall. Covering the square cylindrical hard insulation wall with a wall,
The steel plate-made square cylindrical inner cylinder is a pre-lined steel plate lined on the inner surface of the hard front insulation wall of the square cylindrical hard insulation wall, an inner steel plate lined on the inner surface of the hard rear insulation wall, and an inner surface of the hard left insulation wall And a lined right steel plate lined on the inner surface of the hard right heat insulation wall.

according to this,
Step 1: Place the front steel sheet horizontally with the soft front insulation wall facing upward.
Step 2: The hard pre-insulation wall is horizontally laid on the soft pre-insulation wall with the pre-lined steel sheet facing upward.
Step 3: A hard left heat insulation wall is erected vertically on the left end top surface of the hard front heat insulation wall with the lining left steel plate facing right, and a hard right right steel sheet facing left on the top surface of the hard front heat insulation wall Set up the insulation wall vertically.
Step 4: Place the steel plate facing down on the top surface of the hard left heat insulation wall and the top surface of the hard right heat insulation wall with the steel plate facing downward, bridging the hard heat insulation wall, and forming a square cylindrical hard heat insulation wall on the soft front heat insulation wall . Along with this, a steel plate square cylindrical inner cylinder is lined on the inner surface of the square cylindrical hard insulation wall.
Step 5: Place the back steel plate horizontally with the soft post-insulation wall facing downward on the upper surface of the rigid post-insulation wall of the square cylindrical hard insulation wall.
Step 6: Join the front end of the left steel plate and the left end of the front steel plate to each other with the soft left thermal insulation wall facing to the right, join the rear end of the left steel plate to the left end of the rear steel plate, and soft right insulation The front end of the right steel plate and the right end of the front steel plate are joined to each other with the wall facing left, and the rear end of the right steel plate and the right end of the rear steel plate are joined to each other. A steel plate square cylindrical inner cylinder is constructed.
The front steel plate to which the soft front insulation wall is stuck, the steel plate after the soft rear insulation wall is stuck, the left steel plate to which the soft left heat insulation wall is stuck, the right steel plate to which the soft right heat insulation wall is stuck, A hard front insulation wall lined with a steel sheet before lining, a rigid back insulation wall lined with a steel plate after lining, a hard left insulation wall lined with a lining left steel plate, a hard right insulation wall lined with a lining right 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. In addition, it is not necessary to make the inner method of the square cylindrical soft insulating wall stuck to the inner surface of the steel plate square cylindrical outer cylinder larger than the outer law of the rectangular cylindrical hard insulating wall, The four outer surfaces of the cylindrical rigid thermal insulation wall can be covered without gaps by the square cylindrical soft thermal insulation wall. Therefore, even if the 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 heat insulation walls before and after the rectangular cylindrical hard heat insulation wall and the heat insulation walls on the left and right is suppressed, Can also be prevented.

  The inner steel plates are respectively divided into front, rear, left and right hard heat insulation walls, and the respective hard steel walls are each made by the head of a plurality of screws screwed into the respective hard heat insulation walls from the inner steel plates side. It is pressed and lined with the inner surface of the heat insulation wall.

  According to this, each inner lining of each steel plate coated on the inner surface of each hard heat insulation wall separates and positions each steel inner steel plate on each inner surface of the front, rear, left and right hard heat insulation walls, It is easily done by the operation of screwing the shaft of the screw from the inner steel plate side to the opposite hard heat insulation wall. In addition, since the inner steel plate is strongly lined by the strong pressing force of the screw head, it is possible to prevent the steel plate from falling off and to prevent the steel plate square cylindrical inner cylinder from being broken.

  According to the chimney according to the present invention, the outer surface of the square cylindrical heat insulation wall in the chimney unit is covered with a steel steel square cylindrical outer cylinder, and the inner surface of the square cylindrical heat insulation wall is lined with a steel steel square cylindrical inner cylinder. Because it is shut off from the exhaust gas, the smoke prevention performance is enhanced, and naturally occurring smoke due to aging, as well as the load of strong external force such as an earthquake or unwanted large vibration, or the square due to aging deterioration, etc. Even if a crack occurs in the cylindrical heat insulation wall, the smoke does not leak.

It is a front view which shows partially the embodiment of the chimney which concerns on this invention. It is the expansion explanatory view which looked at the plane shape of a 1st embodiment of the chimney unit from the II-II line of FIG. FIG. 3 is an enlarged exploded view of FIG. 2; It is a perspective view which falls horizontally and shows 1st Embodiment of a chimney unit. It is a disassembled perspective view of FIG. It is a front view of 1st Embodiment of a chimney unit. It is a right side view of a 1st embodiment of a chimney unit. (A)-(f) is an explanatory view showing a manufacturing process of a chimney unit of a 1st embodiment. It is a perspective view which falls horizontally and shows 2nd Embodiment of a chimney unit. It is explanatory drawing which looked at the planar shape of 2nd Embodiment of the chimney unit from the II-II line of FIG. It is a perspective view which falls over horizontally the conventional chimney unit and shows a part.

Hereinafter, a preferred embodiment of a chimney according to the present invention will be described based on 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 plane shape of the first embodiment of the chimney unit as viewed from line II-II in FIG. 4 is a perspective view showing the first embodiment of the chimney unit horizontally by tilting, FIG. 5 is an exploded perspective view of FIG. 4, FIG. 6 is a front view of the first embodiment of the chimney unit, FIG. 7 is a right side view of the first embodiment of the chimney unit, and FIGS. 8 (a) to 8 (f) are explanatory views showing manufacturing steps of the chimney unit of the first embodiment.

  In FIG. 1, the chimney 1 has a plurality of square cylindrical chimney units 1A, 1B, 1C,... With their axes vertically oriented, stacked vertically up to a predetermined height by a butt structure, The cylindrical chimney units 1A and 1B and 1B and 1C are fastened and constructed by fastening and connecting means 2 composed of, for example, a plurality of bolts and nuts.

  The chimney 1 is installed in a vertical posture in a stairwell provided in the enclosure of a building (not shown), and its upper end is exposed to the roof of the building, and the lower end is installed inside the building. An exhaust system of an exhaust gas source such as a gas turbine engine or a diesel engine that drives a generator, or a boiler or an industrial waste incinerator is connected.

  In FIG. 2, FIG. 3, FIG. 4 and FIG. 5, each square cylindrical chimney unit 1A, 1B, 1C has a square cylindrical thermal insulation wall 3 having a vertical axis and a rectangular cylindrical thermal insulation wall 3 having a vertical axis. A steel plate square cylindrical outer cylinder 4 covering the outer surface, and a steel plate square cylindrical inner cylinder 5 lined with the inner surface of the square cylindrical heat insulation wall 3 to shield the inner surface from exhaust gas are provided. On the other hand, a flange F constituted by a framework of four welded L-shaped steels L1, L2, L3 and L4 is provided on the outer periphery in the axial direction of both ends of the steel plate square cylindrical outer cylinder 4. The flanges F sandwich the packing (not shown) made of a high heat resistant and high elastic seal material when connecting the chimney units 1A and 1B and 1B and 1C facing each other directly above and directly below. It is fastened by fastening connection means 2 (see FIG. 1) consisting of a bolt and a nut. Therefore, a plurality of bolt holes 9 for inserting the bolts of the fastening connection means 2 are provided.

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

  According to the chimney 1 of the said structure, the outer surface of the square cylindrical heat insulation wall 3 in each chimney unit 1A-1C, ie, the outer surface of the square cylindrical soft heat insulation wall 31, is covered with the steel plate square cylindrical outer cylinder 4. And since the inner surface of square cylindrical heat insulation wall 3, that is, the inner surface of square cylindrical hard insulation wall 30, is lined with steel plate square cylindrical inner cylinder 5 and shielded from exhaust gas, the leakage prevention performance is enhanced. . Therefore, even if a crack is generated in the rectangular cylindrical hard insulating wall 30 due to the load of a strong external force such as an earthquake or an unwanted large vibration, or aged deterioration as well as naturally occurring smoke due to aging, leakage occurs. There is no smoke.

  The square cylindrical hard insulation wall 30 is made of calcium silicate panel, and the front hard insulation wall 30a and the rear hard insulation wall 30b opposite to each other at the front and back, the hard left insulation wall 30c opposite to each other at the left and right and the right right insulation wall The four heat insulating walls 30a to 30d of 30d are provided, and the widthwise ends of the rigid front thermal insulation wall 30a, the rigid rear thermal insulation wall 30b and the rigid left thermal insulation wall 30c, and the rigid right thermal insulation wall 30d are engaged with each other The square cylindrical soft heat insulation wall 31 is made of a heat insulation fiber material including rock wool, glass wool and carbon cloth, and is a soft front heat insulation wall 31a facing each other at the front and back. And the soft rear insulation wall 31b and the four soft insulation walls 31a to 31d of the soft left insulation wall 31c and the soft right insulation wall 31d facing each other on the left and right It is configured together.

  With such a configuration, since the calcium silicate panel is heavy, weight reduction of the square cylindrical hard insulating wall 30 is effectively achieved by setting the thickness of the panel thin. Thereby, the manufacture and handling of the chimney units 1A, 1B, 1C,... Become easy, and the construction of the chimney 1 is made easy. Moreover, since the calcium silicate panel is high in rigidity, even if its thickness is set thin, it is possible to manufacture a strong chimney unit 1A, 1B, 1C... Having high rigidity. On the other hand, the decrease in the insulation performance of the square cylindrical hard insulation wall 30 due to the thin thickness of the calcium silicate panel being set is compensated by the square cylindrical soft insulation wall 31 having high insulation properties, The rectangular cylindrical heat insulating wall 3 can exhibit an excellent heat insulating effect.

  In FIGS. 2 to 7, the steel plate square cylindrical outer cylinder 4 is a front steel plate 40 and a rear steel plate 41 facing each other at the front and back, and four steel plates 40 to 43 of left steel plate 42 and right steel plate 43 facing each other at left and right. The soft front heat insulation wall 31a of a predetermined thickness is affixed to the inner surface of the front steel plate 40 so as not to move relatively, and the soft post heat insulation wall 31b of a predetermined thickness is relative movement to the inner surface of the rear steel plate 41. The soft left heat insulation wall 31c of a predetermined thickness is stuck relative to the inner surface of the left steel plate 42 while the relative movement of the soft right heat insulation wall 31d of a predetermined thickness is impossible relative to the inner surface of the right steel plate 43 The soft thermal insulation walls 31a to 31d are combined with each other in accordance with the configuration of the steel plate square cylindrical outer cylinder 4 made by combining the four steel plates 40 to 43 with each other. wall 1 is configured, and the square cylindrical hard insulating wall 30 is covered with the square cylindrical soft insulating wall 31, and the steel plate square cylindrical inner cylinder 5 is a hard front insulating wall 30 a of the square cylindrical hard insulating wall 30. Pre-lined steel plate 50 lined on the inner surface of the inner surface, after-lined steel plate 51 lined on the inner surface of the hard post heat insulation wall 30b and inner left steel plate 52 lined on the inner surface of the hard left heat insulation wall 30c, hard right heat insulation wall 30d It is comprised by the lining right steel plate 53 lined on the inner surface of.

Next, assembly of each of the rectangular tubular chimney units 1A to 1C will be described.
The front steel plate 40 to which the soft front heat insulation wall 31a is stuck, the back steel plate 41 to which the soft rear heat insulation wall 31b is stuck, the left steel plate 42 to which the soft left heat insulation wall 31c is stuck, and the soft right heat insulation wall 31d Right steel plate 43, hard front heat insulation wall 30a lined with pre-lining steel plate 50, hard back heat insulation wall 30b lined with back steel plate 51, hard left heat insulation wall 30c lined with left steel plate 52, inner right In the 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 insulation wall 31a facing upward [Fig. 8 (a)].
Step 2: The hard pre-insulation wall 30a is horizontally laid on the soft pre-insulation wall 31a with the pre-lining steel plate 50 facing upward [FIG. 8 (b)].
Step 3: The hard left heat insulation wall 30c is erected vertically on the left end upper surface of the hard front heat insulation wall 30a with the inner left steel plate 52 facing right, and the inner right steel plate 53 on the upper end of the hard front heat insulation wall 30a A rigid right heat insulation wall 30d is vertically provided so as to face left [FIG. 8 (c)].
Step 4: Place the steel plate 51 after lining downward on the upper surface of the hard left heat insulation wall 30c and the upper surface of the hard right heat insulation wall 30d, and place the hard post heat insulation wall 30b over the soft front heat insulation wall 31a. The heat insulating wall 30 is configured [FIG. 8 (d)]. Along with this, a steel plate square cylindrical inner cylinder 5 is lined on the inner surface of the square cylindrical hard heat insulation wall 30.
Step 5: The back steel plate 41 is placed horizontally with the soft post heat insulation wall 31b facing downward on the upper surface of the hard post heat insulation wall 30b of the square cylindrical hard heat insulation wall 30 [FIG. 8 (e)].
Step 6: With the soft left thermal insulation wall 31c facing right, the front end of the left steel plate 42 and the left end of the front steel plate 40 are fastened and joined together, and the rear end of the left steel plate 42 and the left end of the rear steel plate 41 are mutually The front end portion of the right steel plate 43 and the right end portion of the front steel plate 40 are fastened and connected together with the soft right heat insulation 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 together to form a steel plate square cylindrical outer cylinder 4 and a steel plate square cylindrical inner cylinder 5 [FIG. 8 (d)].

  Thus, in each chimney unit 1A, 1B, 1C, the front steel plate 40 to which the soft front heat insulation wall 31a is stuck, the back steel plate 41 to which the soft rear heat insulation wall 31b is stuck, and the soft left heat insulation wall 31c Left steel plate 42, right steel plate 43 with soft right heat insulation wall 31d affixed, hard front heat insulation wall 30a lined with front steel plate 50, hard back heat insulation wall 30b with back steel plate 51, inner left Each part such as the hard left heat insulation wall 30c lined with the steel plate 52 and the hard right heat insulation wall 30d lined with the lined right steel plate 53 can be easily manufactured by assembling from the above steps 1 to 6 Therefore, the manufacturing cost of each chimney unit 1A, 1B, 1C can be reduced. In addition, it is necessary to make the inner method of the square cylindrical soft insulating wall 31 stuck to the inner surface of the steel plate square cylindrical outer cylinder 4 larger than the outer method of the square cylindrical hard insulating wall 30, The four outer surfaces 3a to 3d of the rectangular cylindrical hard insulating wall 30 can be surrounded by the rectangular cylindrical soft insulating wall 31 without a gap. Thereby, even if the pulsating gas such as the exhaust gas of a diesel engine is exhausted, the deflection under the influence of the exhaust pulsation of the heat insulating walls 30a and 30b before and after the square cylindrical hard heat insulating wall 30 and the left and right heat insulating walls 30c and 30d. Can be suppressed and high noise such as can can be prevented.

  In FIG. 2 to FIG. 7 and FIG. 8 (d), at the left end of the front steel plate 40 in the steel plate square cylindrical outer cylinder 4, a bent piece 40a bent forward is formed extending in the vertical direction, and A bent piece 40b bent forward is formed in the vertical direction at the right end of the steel plate 40 so that they 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 cylindrical outer cylinder 4 The bending pieces 41a bent in the backward direction are formed extending in the vertical direction, and the bending pieces 41b bent in the backward direction are formed extending in the vertical direction at the right end portion of the rear steel plate 41. A first contact portion 4A is formed, which is opposite each other on the left and right, and the front end inner surface of the left steel plate 42 and the left end surfaces of the left bent piece 40a of the front steel plate 40 abut each other to extend in the vertical direction A second contact portion 4B is formed in which the rear end portion inner surface of the steel plate 42 and the left end surfaces of the left bent piece 41a of the rear steel plate 41 abut each other to extend in the vertical direction. And a third contact portion 4C in which the right end surfaces of the right bent piece 40b of the front steel plate 40 abut each other to extend in the vertical direction, and the inner surface of the rear end portion of the right steel plate 43 and the right bending of the rear steel plate 41 A fourth contact portion 4D in which the right end faces of the piece 41b contact each other to extend in the vertical direction is configured, and the contact portions 4A to 4D are bolted and fixed at an interval in the vertical direction. It is fastened and joined by a plurality of fastening members 6 (but illustration of a nut is omitted).

  As described above, the steel plate square cylindrical outer cylinder 4 can be easily joined by fastening the first contact portion 4A to the fourth contact portion 4D with the plurality of fastening members 6 at intervals in the vertical direction. Therefore, for example, compared with the method of welding the front steel plate 40 and the rear steel plate 41 and the left steel plate 42 and the right steel plate 43 and manufacturing the steel plate square cylindrical outer cylinder 4, the manufacturing time is significantly shortened. Production cost can be reduced. Therefore, it becomes possible to manufacture each chimney unit 1A-1C at low cost.

Here, steel girders are installed at predetermined intervals in the vertical direction in the frame of the above-mentioned building, and a plurality of holding members near the upper end portions of the chimney units 1A, 1B, 1C are attached to these steel girders Are connected to each other to prevent the chimney 1 from falling down. Each holding member has its tip end fastened to a steel girder, and its base end is joined near the upper end of each chimney unit 1A to 1C so as to be horizontal near the steel girder and the upper end of each chimney unit 1A to 1C. Be erected.
Since the chimney units 1A to 1C of the chimney 1 according to the present invention have the first contact portion 4A to the fourth contact portion 4D formed in the steel sheet square cylindrical outer cylinder 4, the position of the steel girder Forming a bolt hole horizontally near the upper end portions of the first contact portion 4A to the fourth contact portion 4D by site alignment, each holding member fastens its tip to the steel girder, and The steel girder and chimney units 1A are fastened and connected near the upper end portions of the first contact portion 4A to the fourth contact portion 4D by fastening the bolt whose base end portion is inserted into the bolt hole and nut-tightened. The work of erecting horizontally near the top end of 1 C can be easily performed.

  Each of the pre-lined steel plate 50 and the post-lined steel plate 51, and the left-lined left steel plate 52 and the right-handed steel plate 53, which constitute the steel plate square cylindrical inner cylinder 5, is made of a stainless steel plate. Then, the pre-lining steel plate 50 is the head 8 b of each of the plurality of screws 8 in which the shaft portion 8 a is screwed from the pre-lining steel plate 50 side with respect to the inner surface of the hard pre-insulation wall 30 a in the square cylindrical hard insulation wall 30. The inner steel plate 51 is pressed against the inner surface of the hard post-insulation wall 30b by the head 8b of each of the plurality of screws 8 into which the shaft 8a is screwed from the inner steel plate 51 side. And the inner left steel plate 52 is pressed against the inner surface of the hard left heat insulation wall 30c by the head 8b of each of the plurality of screws 8 into which the shaft 8a is screwed from the inner left steel plate 52 side. The inner lined right steel plate 53 is pressed against the inner surface of the hard right heat insulation wall 30d by the respective head portions 8b of the plurality of screws 8 in which the shaft portion 8a is screwed from the inner right steel plate 53 side. . In the first embodiment, a strong fastening force is obtained by screwing the screw 8 into a stainless steel abutment plate (not shown) whose tip is disposed on the outer surface of each rectangular cylindrical hard heat insulating wall 30. ing.

  According to this, the inner linings of the inner steel plates 50 to 53 on the inner surfaces of the hard heat insulating walls 30a to 30d separately distribute the inner steel plates 50 to 53 on the inner surfaces of the front hard insulating walls 30a to 30d. After positioning and stacking, it is easily done by an operation of screwing the shaft portion 8a of the screw 8 into the opposite hard heat insulation wall from each of the inner steel plates 50 to 53 side. In addition, since the inner steel plates 50 to 53 are strongly lined by the strong pressing force of the head 8b of the screw 8, the falling is prevented, and the steel plate square cylindrical inner cylinder 5 can be prevented from being broken.

  In other words, the respective linings of the inner steel plates 50 to 53 on the hard heat insulation walls 30a to 30d position the front steel plate 50 on the inner surface of the hard front heat insulation wall 30a and overlap, and then from the front steel plate 50 side. After screwing the shaft 8a of the screw 8 into the hard front heat insulation wall 30a and positioning and stacking the post-lined steel plate 51 on the inner surface of the hard post heat insulation wall 30b, the shaft 8a of the screw 8 is made hard from the inner back steel plate 51 side After screwing the rear left steel plate 52 on the inner surface of the hard left heat insulation wall 30c and screwing the shaft portion 8a of the screw 8 from the inner left steel plate 52 side to the hard left heat insulation wall 30c; After the inner right steel plate 53 is positioned and stacked on the inner surface of the hard right heat insulation wall 30d, the shaft 8a of the screw 8 is screwed from the inner right steel plate 53 into the hard right heat insulation wall 30d. It is. In addition, since each of the inner steel plates 50 to 53 is made of a stainless steel plate having high corrosion resistance, corrosion due to 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 in a horizontal position, and FIG. 10 is an explanatory view of a plane shape of the second embodiment of the chimney unit as viewed from line II-II in FIG.
The same parts as those in the first embodiment are denoted by the same reference numerals, and the description of the structure and operation of overlapping members is omitted.

  In FIGS. 9 and 10, the chimney units 1A, 1B, 1C,... Of the second embodiment are square cylindrical soft heat insulation walls 31 used in the chimney units 1A, 1B, 1C,. Is omitted. The chimney units 1A, 1B, 1C of the second embodiment in which one member (square cylindrical soft insulating wall 31) is reduced as described above are similar to the chimney units 1A, 1B, 1C of the first embodiment. High smoke prevention performance is obtained. Here, the chimney 1 for dissipating the high temperature exhaust gas may be constructed by the chimney units 1A, 1B, 1C of the first embodiment, and the chimney 1 for dissipating the low temperature exhaust gas is the chimney unit 1A of the second embodiment. , 1B, 1C... In the second embodiment, a strong fastening force is obtained by screwing the end of the screw 8 into the steel sheet square cylindrical outer cylinder 4.

  The chimney 1 which concerns on this invention is not limited only to said each embodiment, A structure deformation | transformation is possible if it is the range which does not deviate from the meaning and technical thought.

  The chimney of the present invention is useful as a chimney for diffusing the exhaust gas of a gas turbine engine or diesel engine that drives an emergency generator, the exhaust gas of a boiler, the exhaust gas of an industrial waste incinerator, etc. outdoors.

1 chimney 1A chimney unit 1B chimney unit 1C chimney unit 3 square cylindrical heat insulation wall 30 square cylindrical hard insulation wall 30a rigid front insulation wall 30b rigid post thermal insulation wall 30c rigid left thermal insulation wall 30d rigid right thermal insulation wall 31 square cylindrical soft insulation Wall 31a Soft front heat insulation wall 31b Soft rear heat insulation wall 31c Soft left heat insulation wall 31d Soft right heat insulation wall 4 Steel plate square cylindrical outer cylinder 40 Front steel plate 40a Forward bending piece 40b Forward bending piece 41 Back steel plate 41a Backward bending piece 41b Bent back piece 4A first contact portion 4B second contact portion 4C third contact portion 4D fourth contact portion 5 steel plate square cylindrical inner cylinder 50 pre-tensioned steel plate 51 post-tensioned steel plate 52 tensioned left steel plate 53 Lined right steel plate

8 screw 8a shaft 8b head

Claims (5)

A chimney constructed by vertically stacking a plurality of square tubular chimney units with their axes directed vertically,
Each chimney unit has a square cylindrical heat insulation wall having a vertical axis, a steel plate square cylindrical outer cylinder having a vertical axis and covering the square cylindrical heat insulation wall, and an inner surface of the square cylindrical heat insulation wall A chimney comprising: a steel plate square cylindrical inner cylinder that is lined and shields the inner surface from exhaust gas. In the chimney described in claim 1,
The steel plate square cylindrical outer cylinder is configured by combining a front steel plate and a rear steel plate facing each other at the front and back, and a left steel plate and a right steel plate facing each other at the left and right in a square cylinder shape.
A pair of left and right bent pieces that are bent forward and face each other are formed extending in the vertical direction at the left and right end portions of the front steel plate of the steel plate square cylindrical outer cylinder, and after the steel steel square cylinder outer cylinder At the left and right ends of the steel plate, a pair of left and right bent pieces that are bent backward and opposed to each other are formed extending in the vertical direction,
A first contact portion is formed in which the front end portion inner surface of the left steel plate and the left end surfaces of the left bent pieces of the front steel plate abut each other to extend in the vertical direction, and the inner surface of the rear end portion of the left steel plate and the rear The left end faces of the left bent pieces of the steel plate abut each other to form a second contact portion extending in the vertical direction, and the inner surface of the front end portion of the right steel plate and the right end face of the right bent piece of the front steel plate A third contact portion is formed which abuts each other to extend in the vertical direction, and the inner surface of the rear end portion of the right steel plate and the right end face of the right bent piece of the rear steel plate abut each other and extend in the vertical direction The fourth contact portion is configured,
Each of the contact portions is a chimney which is fastened and connected by a plurality of fastening members at an interval in the vertical direction. In the chimney described in claim 1 or claim 2,
The square cylindrical heat insulation wall includes an inner square cylindrical hard heat insulation wall, and a square cylindrical soft heat insulation wall covering the square cylindrical hard heat insulation wall,
The square cylindrical hard insulation wall is made of calcium silicate panel and is a square tube of a hard front insulation wall and a hard rear insulation wall facing each other at the front and back and a hard left insulation wall and a hard right insulation wall facing each other at the left and right It is composed of a combination of shapes,
The soft heat insulation wall is made of a heat insulation fiber material, and is formed of a combination of a square tube shape of a soft front heat insulation wall and a soft rear heat insulation wall facing each other and a soft left heat insulation wall and a soft right heat insulation wall facing each other on the left and right. The chimney to be done. In the chimney described in claim 3,
The soft front heat insulation wall is stuck to the inner surface of the front steel plate, the soft rear heat insulation wall is stuck to the inner surface of the rear steel plate, and the soft left heat insulation wall is stuck to the inner surface of the left steel plate The soft right insulation wall is stuck on the inner surface of the steel plate,
According to the configuration of the steel-plate-made square-cylindrical outer cylinder formed by combining the steel-plate-shaped square-cylindrical-shaped steel plates, the soft-insulation walls are combined with each other to form a square-cylindrical soft-insulation wall. Covering the square cylindrical hard insulation wall with a wall,
The steel plate-made square cylindrical inner cylinder is a pre-lined steel plate lined on the inner surface of the hard front insulation wall of the square cylindrical hard insulation wall, an inner steel plate lined on the inner surface of the hard rear insulation wall, and an inner surface of the hard left insulation wall A chimney made up of a lined left steel plate lined on the inside and a lined right steel plate lined on the inner surface of the hard right heat insulation wall. 5. The chimney according to claim 4, wherein the lining steel plates are respectively divided into front, rear, left and right hard thermal insulation walls, and a plurality of screws in which shaft portions are screwed into the respective hard thermal insulation walls from the respective lining steel plates The chimney which is pressed and lined with the inner surface of each said rigid heat insulation wall by the head of a.

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