JPS6132473B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a soundproofing device surrounding one or more noise sources, and in particular to a method of assembling a soundproofing wall.

Recently, noise has been cited as a problem in factories that have a large number of various power sources and manufacturing machines, and both existing and new construction are struggling to deal with the noise. As an example, considering a boiler that is a steam power station, as shown in Figure 1, the noise sources include a forced air blower 1 that is a rotating machine that supplies combustion air, a blower for recirculating gas 2, a coal crusher 3, and a coal crusher 3. There is a soot blower device 5 for a transport station 3a, a water supply pump 4, a primary superheater, a secondary superheater, an evaporator tube, a reheater, etc. The power plant also has turbine equipment housed in a separate building. Soundproofing these noise sources individually is important from a maintenance standpoint, as well as various pipes,
This is extremely difficult due to the relationship between beams, wiring, etc.

Also, the noise frequency (kilocycles/second KC/
A diagram showing the relationship between S) and sound pressure level (dB decibel) is shown in the reference diagram, Figure 1. In other words, the noise is a composite of various cycles, and both the air outlet and the suction port show similar distributions. Furthermore, depending on the shape and arrangement of the air conduit, it may resonate with the air flow and become a source of noise.

It is an object of the present invention to propose a method for assembling a device for enclosing and soundproofing various noise sources, particularly a method for assembling a soundproof wall.

In short, this invention supports the pillars forming the soundproof wall by extending support members from the steel frame of the structure, and the soundproof wall pillars can be used to assemble a device that surrounds multiple noise sources all at once or an entire building. The present invention is characterized in that the horizontal beam, ceiling beam, and unit soundproof wall are installed using positioning protrusions and bolt tightening.

The structure of the device according to the present invention will be explained below with reference to the drawings. In Figure 1, the boiler equipment is surrounded by a building that is a structure with an outer panel attached to a steel frame 6, but it has various openings, and the outer wall of the building itself is not intended for soundproofing, so Noise dissipation cannot be prevented. Another problem is that the sound waves exiting from the building openings have the effect of diffraction and are spread over a wide range.

In this invention, a support member 8 supporting the soundproof wall support column 7 is extended from the steel frame 6 or the cross beam 6a, and the steel frame 6 and the soundproof wall support column 7 are connected by means such as welding. Regarding the ceiling part, a support member 8b is extended from the ceiling beam 6b to hold the cross beam 7b. The soundproof wall support 7 is preferably a steel frame with an H-shaped cross section, and the flange of this H-shaped steel is used to connect the flange of the soundproof board 9 with bolts, and the soundproof boards can be stacked and installed. be.

The structure and assembly method of the soundproof wall will be explained with reference to FIGS. 3 to 5. The soundproofing board 9, which is a unit soundproofing member, is U
It is formed by attaching two plates 12 to the flange 11a of the channel 11 of the mold, and filling the space 13 with a soundproof buffer plate 14. To attach this to the H-shaped channel, insert the end of the soundproof plate 9 into the groove of the H-shaped steel as shown by the broken line in Figure 4, and then insert the other end into the groove of the other H-shaped steel. be able to. For example, if one side is inserted into the groove of the soundproof wall support ₇₁ in FIG. 3, the other side can be easily inserted into the groove of another soundproof wall support ₇₂ . Thereafter, the flange of the soundproof wall support and the flange of the soundproof board can be connected and tightened using the bolts 15.

That is, in order to fit this unit soundproof wall into the groove of the H-shaped steel (indicated by the reference numeral 19 in FIG. 4 and referred to as a U-shaped groove) and attach it to the soundproof wall supports 7 ₁ and 7 ₂ , the soundproof wall support 7
It is necessary that the distance between the opposing left and right edges of Nos _{. 1} and ₇₂ plus the depth d of the U-shaped groove 19 be greater than the width of the unit soundproof wall.

Regarding the vertical edges of the soundproof board, the upper edge of the lower soundproof board ₉₂ is provided with a hole 16 for receiving a protrusion, and the upper soundproof board ₉₁ is provided with a protrusion 17 to form a protrusion connection part. It is easy to set the position to align the plate surfaces. In this case, when the plate 12 of the soundproof board ₉₁ hangs down so as to contact the channel flange surface of the lower soundproof board ₉₂ and the packing 18 is used, the effect of the soundproof seal is further enhanced. In this way, the soundproof boards 9 can be stacked one after another and attached to the soundproof board supports 7 to form a soundproof wall. Furthermore, the soundproof plate can be easily removed by removing the bolts 15. The cross section of the soundproof wall support is not limited to an H-shape, but may be an angle type or one in which two channels are connected.

By carrying out this invention, stacking and assembling the soundproof plates can be done by simply tightening bolts, which makes it extremely easy and quick, and it is possible to form a soundproof wall without noise leakage.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a boiler device equipped with a soundproofing device according to the present invention, Fig. 2 is a partial perspective view of a supporting member portion of a soundproof wall support, and Fig. 3 is a partial view showing the external appearance of the soundproof wall. A perspective view with a cutout; Figure 4 is a partially enlarged cross-sectional view showing the connection between the soundproof board and the soundproof wall support;
FIG. 5 is a partial cross-sectional view showing a protrusion at the opposing connection portion of the upper and lower edges of the soundproof board. 7...Soundproof wall support, 9,9 _{1,9 2} ...Soundproof board, 11...Channel, 12...Plate, 13...
Space, 14... Soundproof cushioning material, 15... Bolt, 1
6... Hole, 17... Protrusion, 18... Packing.

Claims (1)

[Claims] 1. In a method of assembling a soundproof wall for a boiler building by inserting and fixing the edge of a soundproofing member into a U-shaped groove of a support, the soundproofing member extends from a support of the boiler building that surrounds a boiler and a noise source of the boiler. A soundproofing wall column having a U-shaped groove is supported by a supporting member, and the distance between the edge of one soundproofing wall column and the parallel edge of another soundproofing wall column plus the depth of the U-shaped groove is measured. The width of the soundproofing unit is larger than the width of the unit soundproofing member with a metal frame, and after inserting the unitary soundproofing member into the U-shaped groove of two parallel soundproofing wall supports, fixing each insertion part to the two soundproofing wall supports, and A method for assembling a soundproof wall, which comprises forming a soundproof wall by connecting upper and lower edges of soundproofing members, piling them up and fixing them. 2. The method for assembling a soundproof wall according to claim 1, characterized in that positioning protrusion connecting portions are provided on upper and lower opposing edge contact surfaces of the unit soundproof walls for positioning.