JP3245067U - chimney - Google Patents

Abstract

The present invention provides a chimney having a configuration that is particularly useful when using a large chimney unit. A chimney unit 10 has an outer cylinder 20, an inner cylinder 30, and a heat insulating layer 40. The chimney unit is divided into two vertically divided members 11 and 16. Two vertically divided members 11 and 16 combined into a cylindrical shape are connected by a fastening mechanism 50. The two vertically divided members 11 and 16 have a symmetrical shape. [Selection diagram] Figure 2

Description

The present invention relates to a chimney constructed by connecting a plurality of cylindrical chimney units in a stacked manner.

This type of chimney is constructed in the chimney space of the building frame by connecting multiple chimney units, each several meters long, in a stacked manner from the bottom. Exhaust gas ducts from gas turbines, diesel engines, boilers, and waste incinerators are connected to the duct, and the upper end protrudes onto the roof of the building.

On the other hand, a chimney is constructed using a large chimney unit with an internal space that serves as a flue having a width of 2 m or more and a vertical length (length of one unit) of around 4 m (for example, 3.7 m). If you are required to carry the chimney unit to the chimney construction site using a large truck, there is a limit to the width of the loading platform, so it is recommended to safely load the chimney unit onto the loading platform of the truck. It is difficult to transport.

In the prior example, the chimney unit is constructed by connecting a plurality of cylindrical chimney units in a stacked manner, and the chimney unit includes a cylindrical outer cylinder made of steel plate, a cylindrical inner cylinder, and the outer cylinder. There is a description of a chimney having a heat insulating layer interposed between a cylinder and an inner cylinder (see Patent Document 1).

Utility model registration No. 3227871

The present invention has been made in view of the above circumstances, and aims to provide a chimney with a particularly useful configuration when using a large chimney unit with a large internal space as described above. The purpose is

The chimney according to the present invention is constructed by connecting a plurality of cylindrical chimney units in a stacked manner, and the chimney unit includes a cylindrical outer cylinder made of a steel plate, a cylindrical inner cylinder, It has a heat insulating layer interposed between the outer cylinder and the inner cylinder. The chimney unit is divided into two vertically divided members at two locations in the circumferential direction, and these vertically divided members combined into a cylindrical shape are connected by a fastening mechanism.

With this configuration, the two vertically divided members before being combined into a cylindrical shape can be loaded onto the truck bed and safely transported to the construction site, and the two vertically divided members that have been delivered can be assembled into a cylindrical shape at the construction site. , it becomes possible to combine them by a fastening mechanism to form a chimney unit. A chimney is constructed by connecting these chimney units in a stacked manner.

In the present invention, the above-mentioned fastening mechanism is configured to include flanges provided on the above-mentioned outer cylinder made of steel plate provided on each of the two vertically divided members, and a fastening means for fastening these flanges together. It is possible to adopt. According to this, it is possible to construct the chimney unit by simply tightening the flanges provided on the steel plate outer cylinders provided on each of the two vertically divided members using the tightening means.

In the present invention, it is desirable that the two vertically divided members have symmetrical shapes. According to this, when manufacturing the vertically divided member in a factory, there is an advantage that only one type of shape of the vertically divided member is required to be manufactured.

In the present invention, even if the flange is formed of an L-shaped steel fixed to the outer cylinder made of a steel plate provided on each of the two vertically divided members, the end of the outer cylinder can be bent outward. It may be an ear rim formed by. In the former case, as a means for fixing the L-shaped steel to the outer cylinder, it is possible to employ means using bolts and nuts or means using welding. Moreover, the latter has the advantage that the flange can be formed without using an extra member such as an L-shaped steel.

In the present invention, a hard layer is provided between the outer cylinder and the inner cylinder so as to overlap the end face of the heat insulating layer formed by dividing the chimney unit into two vertically divided members at two points in the circumferential direction. It is possible to adopt a configuration in which spacers are provided and a packing is interposed between the spacers provided on two vertically divided members. According to this, even if a flexible material such as rock wool is used for the heat insulating layer, not only will the material not protrude from between the outer cylinder and the inner cylinder, but the sealing effect of the packing will This makes it difficult for exhaust smoke passing through the flue to infiltrate the heat insulating layer or leak out to the outside of the outer cylinder.

As described above, according to the chimney according to the present invention, even when using a large chimney unit, it is possible to divide the chimney unit into two vertically divided members and safely transport them to the construction site. It becomes possible to construct a chimney unit by combining the two vertically divided members delivered into a cylinder at the construction site. This makes it possible to provide a particularly useful chimney configuration in cases where it is required to construct a chimney using a large chimney unit.

It is a schematic perspective view of the chimney unit used for the chimney based on this invention. It is a cross-sectional plan view of the same chimney unit. 3 is an enlarged view of part III in FIG. 2. FIG. It is a partial sectional view showing a modification of a fastening mechanism. FIG. 3 is a cross-sectional plan view illustrating a procedure for assembling vertically divided members into a square cylindrical chimney unit. FIG. 7 is a cross-sectional plan view explanatory of a procedure for assembling two vertically divided members into a rectangular cylindrical chimney unit with respect to a chimney unit according to another embodiment. FIG. 3 is a cross-sectional plan view of a quadrangular cylindrical packing. FIG. 2 is a cross-sectional plan view of a quadrangular columnar packing. FIG. 3 is an explanatory diagram illustrating division positions of a square cylindrical chimney unit. FIG. 3 is an explanatory diagram illustrating division positions of an oval chimney unit.

FIG. 1 is a schematic perspective view of a chimney unit 10 used in a chimney according to the present invention, and FIG. 2 is a cross-sectional plan view of the chimney unit 10.

The chimney unit 10 shown in FIGS. 1 and 2 includes a rectangular outer cylinder 20 made of steel plate, a rectangular inner cylinder 30, and a heat insulating layer interposed between the outer cylinder 20 and the inner cylinder 30. 40. The outer cylinder 20 is divided into four flat plates 21 that overlap each of the four flat outer surfaces of the heat insulating layer 40, and each of the two adjacent plates 21, 21 is provided separately. The overlapping parts of the ear edges 22, 22 are connected by bolts and nuts 23 at a plurality of places in the vertical direction. An insertion part 24 is provided at the lower end of the upper chimney unit 10, and the insertion part 24 is connected to a sheath tube (not shown) provided at the upper end of the lower chimney unit (not shown). By inserting and connecting the chimney units 10 in the upper and lower stages, the chimney units 10 are connected to each other. For the connection of the upper and lower chimney units 10, it is also possible to employ a flange connection using a flange instead of the above-mentioned plug-in connection.

As can be seen from FIGS. 1 and 2, the chimney unit 10 is divided into two vertically divided members 11 and 16 at two locations in the circumferential direction. In this embodiment, the division is made in the middle of two opposing sides in the cross section of the chimney unit 10 having a rectangular cylindrical shape. These two vertically divided members 11 and 16 are combined into a rectangular cylindrical shape, and the two divided parts are connected by fastening mechanisms 50 and 50.

FIG. 3 is an enlarged view of section III in FIG. 2, and the configuration of the fastening mechanism 50 is shown in this figure. In the following description, a fastening mechanism 50 that connects one of the two divided locations will be described. The fastening mechanism 50 that connects the divided portions on the other side has the same configuration as the fastening mechanism 50 that connects the divided portions on one side.

The fastening mechanism 50 includes flanges 51, 51 formed of L-shaped steel fixed to the outer cylinders 20, 20 made of steel plates provided on each of the two vertically divided members 11, 16, and these flanges 51. , 51 and a tightening means 55 for tightening them together. In the example shown in FIG. 3, the tightening means 55 includes a headed bolt 53 inserted into the holes 52, 52 of the flanges 51, 51, and a nut 54 screwed into the headed bolt 53. The two vertically divided members 11 and 16 are connected by tightening the nut 54. It is also possible to employ a clamp or the like as the tightening means. In addition, as a means for fixing the L-shaped steel forming the flanges 51, 51 to the outer cylinders 20, 20 made of steel plates, the L-shaped steel is attached to the outer cylinder 20 at a location near the end of each vertically divided member 11, 16. , 20 are used. Bolts 56 and nuts 57 are used. In addition, as a means for fixing the L-shaped steel to the outer cylinders 20, 20 made of steel plates, it is also possible to employ a means of welding the L-shaped steel to the outer cylinders 20, 20.

FIG. 4 is a partial sectional view showing a modification of the fastening mechanism 50. In this case, the flanges 51, 51 are edges formed by bending outward the ends of outer cylinders 20, 20 made of steel plates provided on the two vertically divided members 11, 16, respectively. The tightening means 55, similar to that shown in FIG. The two vertically divided members 11 and 16 are connected by tightening the bolts 53 and nuts 54.

In the chimney unit 10 having the above configuration, if a transportation method is adopted in which the two vertically divided members 11 and 16 manufactured in a factory are loaded horizontally onto the bed of a truck and transported to the chimney construction site, the vertically divided members 11 and 16 are transported to the chimney construction site. Since the size of the chimney unit 16 is smaller than the chimney unit 10, the chimney unit 10 can be transported safely. Even in cases where it is necessary to construct a chimney using a large chimney unit 10 that cannot be loaded onto the bed of a truck or is difficult to load, this transportation method provides two After transporting the vertically divided members 11 and 16 to the chimney construction site, it is easily possible to assemble the two vertically divided members 11 and 16 into a rectangular cylindrical chimney unit 10 at the chimney construction site to construct a chimney. Become.

FIG. 5 is a cross-sectional plan view illustrating the procedure for assembling the two vertically divided members 11 and 16 into the square cylindrical chimney unit 10. As can be seen from the figure, when assembling the two vertically divided members 11 and 16 into the square cylindrical chimney unit 10, the two vertically divided members 11 and 16 are made to face each other and the flanges 51 and 51 provided thereon are Tighten using the tightening means 55. In this way, the chimney unit 10 shown in FIGS. 1 and 2 is assembled.

In the chimney unit 10 shown in FIGS. 1 and 2, a rectangular cylindrical outer cylinder 20 is divided into four flat plates 21 that overlap each of the four flat outer surfaces of the heat insulating layer 40. However, in a chimney unit (not shown) according to another embodiment, the outer cylinder 20 may be manufactured by bending a flat plate into a square cylinder shape.

FIG. 6 is a cross-sectional plan view illustrating a procedure for assembling the two vertically divided members 11 and 16 into a square cylindrical chimney unit in relation to the chimney unit according to the other embodiment described above. In this embodiment, the outer cylinder 20 is manufactured by bending a flat plate into a U-shape. As can be seen from the figure, when assembling the two vertically divided members 11 and 16 into a rectangular cylindrical chimney unit, the two vertically divided members 11 and 16 are made to face each other and the flanges 51 and 51 provided thereon are tightened. Tighten using means 55. In this way, the chimney unit according to the other embodiments described above is assembled. The tightening means 55 has the same structure as that described with reference to FIGS. 4 and 5.

In the example shown in FIG. 3, the outer cylinder 20 and the inner cylinder 30 are attached to the end face of the heat insulating layer 40, which is formed by dividing the chimney unit 10 into two vertically divided members 11 and 16 at two points in the circumferential direction. Hard spacers 60 are arranged in an overlapping manner. This spacer 60 is connected to the outer tube 20 and the inner tube 30 by bolts 56 and nuts 57, which are used as means for fixing the L-shaped steel forming the flanges 51, 51 to the outer tubes 20, 20 made of steel plates. is tightened. In addition, in the example shown in FIG. 4, a spacer 60 interposed between the outer cylinder 20 and the inner cylinder 30 and provided on the end face of the heat insulating layer 40 is connected to the outer cylinder 20 and the inner cylinder by bolts 58 and nuts 59. It is tightened to 30. In this way, even if a flexible material such as rock wool is used for the heat insulating layer 40, the material will not protrude from between the outer cylinder 20 and the inner cylinder 30.

Furthermore, in each case shown in FIGS. 3 and 4, a packing 70 is interposed between the spacers 60, 60 provided in the two vertically divided members 11, 16. According to this, the sealing effect of the packing 70 makes it difficult for exhaust smoke passing through the flue to infiltrate the heat insulating layer 40 or leak out to the outside of the outer cylinder 20. As is clear from FIGS. 5 and 6, the packing 70 is formed by a spacer 60 provided on each vertically divided member 11, 16 when the two vertically divided members 11, 16 are assembled into the square cylindrical chimney unit 10. , 60.
FIG. 7 is a cross-sectional plan view of the spacer 60 having a rectangular cylindrical shape, and FIG. 8 is a cross-sectional plan view of the spacer 60 having a rectangular column shape. The rectangular cylindrical spacer 60 shown in FIG. 7 is made of, for example, a thin stainless steel plate, and is provided with a bolt insertion hole 61. Further, the square columnar spacer 60 shown in FIG. 8 is made of, for example, calcium silicate, and is provided with a bolt insertion hole 62.

It is desirable that the two vertically divided members 11 and 16 that are combined with each other to constitute the chimney unit 10 have a symmetrical shape. There is an advantage that only one shape of the vertically divided members 11 and 12 is required. When dividing the chimney unit 10 into two vertically divided members 11 and 16, any two circumferential points can be selected as the dividing points, but a preferable dividing point is when the two vertically divided members 11 and 16 are divided. This is the part that becomes the target shape. In the examples of FIGS. 1, 2 and 5, or 6, the center position of the opposite side of the chimney unit 10 is selected as the dividing point, but it is also possible to select other positions.

FIG. 9 is an explanatory diagram illustrating the division position C of the square cylindrical chimney unit 10, and FIG. 10 is an explanatory diagram illustrating the division position C of the oval chimney unit 10. For example, as shown in FIG. 9, it is possible to select a location near a corner as the division position C for the square cylindrical chimney unit 10. Moreover, in the oval-shaped chimney unit 10, it is possible to select the boundary part between the circular arc part and the straight part as the division position C, as shown in FIG. The division positions illustrated in FIGS. 9 and 10 are locations where the two vertically divided members 11 and 16 have symmetrical shapes.

Note that in FIGS. 1 to 10, the same or corresponding elements are given the same reference numerals for the purpose of simplifying the explanation.

10 chimney unit 11, 16 vertically divided member 20 outer cylinder 30 inner cylinder 40 heat insulating layer 50 fastening mechanism 51 flange 55 fastening means 60 spacer 70 packing

Claims (6)

It is constructed by connecting a plurality of cylindrical chimney units in a stacked manner, and the chimney unit includes a cylindrical outer cylinder made of a steel plate, a cylindrical inner cylinder, and these outer cylinders and inner cylinders. A chimney comprising: a heat insulating layer interposed between the chimney and the chimney;
A chimney characterized in that the chimney unit is divided into two vertically divided members at two positions in the circumferential direction, and these vertically divided members combined in a cylindrical shape are connected by a fastening mechanism. 2. The chimney according to claim 1, wherein the fastening mechanism comprises flanges provided on the outer cylinder made of steel plate provided on each of the two vertically divided members, and a fastening means for fastening these flanges together. The chimney according to claim 1 or claim 2, wherein the two vertically divided members have symmetrical shapes. The chimney according to claim 2, wherein the flange is formed of an L-shaped steel fixed to the outer cylinder made of a steel plate provided on each of the two vertically divided members. 3. The chimney according to claim 2, wherein the flange is an edge formed by bending outward an end of the outer cylinder made of a steel plate provided on each of the two vertically divided members. A hard spacer is provided between the outer cylinder and the inner cylinder so as to overlap the end face of the heat insulating layer formed by dividing the chimney unit into two vertically divided members at two points in the circumferential direction. 2. The chimney according to claim 1, wherein a packing is interposed between the spacers provided on the two vertically divided members.

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