JPS6014244B2 - Boiler earthquake resistance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an earthquake-resistant device that prevents horizontal shaking of a boiler.

Conventionally, a common problem in this type of seismic equipment has been how to absorb the thermal expansion of the boiler.

Figure 1 is a cross-sectional view showing the case of a suspended boiler;
The figure is a sectional view taken along the line A--A in FIG. 1. The boiler 1 is suspended from the apex of the frame 2 by a suspension member 3 via a spring 4, and each side 5 of the boiler 1 is connected to the frame 2 via a spring 7 by a horizontal member 6. This seismic device absorbs the thermal expansion of the spoiler (indicated by the dashed line in the figure) by the sagging of the spring 7.
The structure is complicated and the force acting on the spring 7 is large, so it is expensive. In addition, Fig. 3 is a cross-sectional view showing the case of a self-supporting boiler, and Fig. 4 is a cross-sectional view taken from B--
It is a sectional view taken along the B line.

The boiler 8 stands upright on the upper surface of the floor, and a protrusion 10 is provided on the backstay 9 on each side of the boiler 8. The stopper 11 that holds the protrusion 10 is connected to the cross beam 1 of the frame 12.
It is provided on the top surface of 3. This seismic device absorbs the thermal expansion of the poiler 8 through the gap T, but it is difficult to take account of thermal expansion such as adjusting the gap T, and since compressive force acts on the members, the size of the structure becomes large. There was a drawback. An object of the present invention is to solve these problems and provide an earthquake-resistant device that can easily absorb the heat expansion and cough of a boiler without using a spring and that has a simple structure.

The structure of the present invention is to form a link device by connecting a plurality of link plates swingably by one or more horizontal pins, and connect one end of each of the plurality of link devices to the side surface of the boiler. The boiler is fixed horizontally and radially by being connected to the frame by horizontal pins at appropriate positions, and each other end is connected to the frame by horizontal pins, and the boiler is fixed so as to be pulled horizontally and radially, and the thermal expansion of the boiler is controlled by the links. It is designed so that it can be absorbed by bending the device.

Embodiments of the present invention will be described below based on the drawings. FIG. 5 is a sectional view showing an embodiment of the present invention in a suspended boiler, and FIG. 6 is a sectional view taken along line C--C in FIG. 5.

Boiler 20', hanging member 2 from the top of frame 21
2 via a spring 23, and
Each corner 24 of the side surface of the boiler 20 is connected to the column 25 of the frame 21 facing the corner by a link device 26, and is fixed so as to be pulled horizontally and radially.

As shown in FIG. 7, the link device 26 includes a link plate 27.
and two link plates 28 that sandwich them are connected by a horizontal pin 29 so as to be swingable. It goes without saying that the link device 26 is not limited to such a configuration, and the number of link plates and pins may be increased as necessary. One end of the linkage 26 is a horizontal pin 30.
Bracket 3 fixed to pillar 25 of frame 21 with one strand
1, Ikebata also connects the boiler 20 with the horizontal pin 32.
are each swingably connected to a bracket 33 fixed to a corner 24 on the side surface of the frame. Since the boiler 2 is a suspended type, it thermally expands horizontally and downward during operation, as shown by the dashed line in FIG. Therefore, the bracket 33 on the boiler side is in the position shown by the dashed line in FIG. 7 with respect to the bracket 31 on the column side. At this time, if the length L of the link device 26 is set to be long enough so that the link plates 27 and 28 are bent at the pins 29, 30, and 32 as shown, the boiler 20 can freely expand thermally. Moreover, the horizontal shaking of the boiler 20 can be prevented by the horizontal tensile elastic resistance of the link plates 27 and 28. FIG. 8 is a front view showing an embodiment of the present invention in a self-supporting boiler.

In this figure, the same reference numerals as in FIG. 5 indicate the same or similar parts as in FIG. 5. Boiler 40'
Each corner 2 of the side of the boiler 40 stands upright on the upper surface of the floor.
4 is loosened by a link device 26 to the column 25 of the frame 21 facing these corner portions, and is fixed so as to be pulled horizontally and radially. Since the boiler 40 is a self-supporting type, hot air is emitted horizontally and upwardly during operation, as shown by the dashed line in FIG.

In this case, the bracket 33 on the boiler side in FIG.
This is the same as in the case of the hanging boiler, except that the bracket 31 is moved upward from the column side bracket 31. Therefore, the functions and effects of the link device 26 are also the same, so a detailed explanation thereof will be omitted. Since the present invention has the above-mentioned configuration, it exhibits the following excellent effects.

[11. Even without using a spring, the boiler can be moved freely.

[21 The structure is simple, so it can be made at low cost.

■ Since there is no need to pay special consideration to lengths, gaps, etc. for the boiler's thermal insulation, assembly and construction of the boiler is facilitated.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional earthquake-resistant device for a suspended boiler, Figure 2 is a cross-sectional view taken along line A-A in Figure 1, and Figure 3 is a cross-sectional view of a conventional earthquake-resistant device for a free-standing boiler. Sectional view shown, No. 4
The figure is a sectional view taken along the line B-B in Fig. 3, Fig. 5 is a sectional view showing an embodiment of the present invention in a suspended boiler, and Fig. 6 is a sectional view taken along the
FIG. 7 is an enlarged front view showing essential parts of the present invention, and FIG. 8 is a front view showing an embodiment of the present invention in a self-supporting boiler. 20... Hanging boiler, 21... Frame, 24...
... Corner part, 25 ... Pillar, 26 ... Link device, 27 ... Link board, 28 ... Link board, 29
...Pin, 30...Pin, 31...
...Column side placket, 32...Pin, 33...Boiler side placket, 40...Self-supporting boiler. Figure 6 Figure 7 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 8

Claims (1)

[Claims] 1 A link device is formed by connecting a plurality of link plates swingably with one or more horizontal pins, and one end of each of the plurality of link devices is horizontally connected at an appropriate position on the side of the boiler. The boiler is fixed so as to be pulled horizontally and radially by connecting each other end to the frame by a horizontal pin, and the thermal expansion of the boiler is controlled by bending the link device. Earthquake-resistant equipment for boilers designed to absorb earthquakes.