JPH04353228A - Manufacture of intake silencer - Google Patents

Abstract

PURPOSE:To prevent entry of foreign matter into a gas turbine to lower the performance, entry of weld spatter whereby a fault is generated, and entry of foreign matter into a sound absorbing silencer, etc., which is caused by the use of a grinder, in a gas turbine or other various types of wind power machines, etc. CONSTITUTION:A sound absorbing part of an intake silencer is formed and assembled without welding and installed to manufacture a silencer. Multiple splitters 1 made individually in the same sound absorbing construction are positioned in parallel with each other in a silencer barrel body 2 made by laminating the sound absorbing material and a protective cloths on the inside walls of a perforated plate, and a barrel body upper cover 3 formed in the same sound absorbing construction as mentioned above is assembled. The end cap is fixed at both sides of the barrel body 2, and sealed by spot welding 5. The intake silencer thus constituted is constructed so that it can be disassembled for inspection of the interior of the sound absorbing part. Also, since the forming and assembling operations can be made without welding, the operation during which any foreign matter cannot be mixed is enabled.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an intake silencer used for sound absorption in gas turbines, blowers, blowers, compressors, gas expanders, and the like.

0002

2. Description of the Related Art An example of a conventional method for manufacturing an intake silencer is shown in FIGS. 8 to 11. In these figures, conventional intake silencers use a fibrous sound-absorbing material 03 inside the body body 02 to obtain a sound-absorbing effect, and a protective cloth 04 (cloth) is placed inside the material to prevent the fibers from scattering due to flow velocity, etc. ,
Further, a perforated plate 05 is superimposed and fixed thereon by spot welding 06 at the end.

A plurality of splitters 01 are installed in parallel inside the body 02 of the intake silencer. The splitter 01 is similarly constructed by filling the inside of a perforated plate with a sound absorbing material and a protective cloth.

[0004] Conventionally, an intake silencer having such a configuration has been manufactured through the following steps. (1) Process of welding sound absorbing parts (sound absorbing materials, protective cloth, perforated plates, etc.) when molding and assembling them to the main body. (2) A process of removing welding spatter generated on the surface of the perforated plate using a grinder or the like. (3) Various cleaning steps are performed after the shape is completed to prevent foreign matter from entering the holes and underside of the perforated plate.

[0005]

[Problems to be Solved by the Invention] However, the conventional manufacturing method for intake silencers as described above has the following defects, which cause performance degradation and failure due to foreign matter getting inside the gas turbine. . (1) Welding spatter gets into the holes and underside of the perforated plate when forming the sound absorbing part and assembling the main body. (2) After the sound absorbing part is assembled, a grinder or the like is used to remove welding spatter and defective welding parts attached to the surface of the perforated plate, so foreign matter gets into the holes and underside of the perforated plate. (3) Once foreign matter enters the perforated plate, it cannot be completely removed.

It is an object of the present invention to provide a new method for manufacturing an intake silencer that eliminates the above-mentioned problems, prevents deterioration in the performance of gas turbines, etc., and prevents failures.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the method for manufacturing an intake silencer of the present invention includes a method of manufacturing an intake silencer in which a sound absorbing material, a protective cloth, and a U-shaped perforated plate are placed inside a body body having a U-shaped cross section. A first step of placing the main body in order, then a second step of mounting the splitter inside the placed main body, and then attaching the upper cover of the main body to the U-shaped opening side of the main body. The device is characterized in that it is sequentially assembled and manufactured by a third step and a fourth step of covering and fixing a cap from the outside of the side surface of the main body and the main body upper cover.

[0008]

[Operation] According to the method of manufacturing an intake silencer of the present invention,
By molding and assembling the sound absorbing part inside the intake silencer individually without welding and then assembling it, a product without foreign objects can be manufactured, so the intake silencer that does not have a negative impact on the gas turbine can always be stably produced. It can be manufactured.

[0009] Furthermore, by constructing the silencer body so that it can be disassembled, it becomes possible to inspect the inside of the sound absorbing section.

Furthermore, since no welding work is required,
It can be constructed in a place with a good working environment, and there is almost no need for internal cleaning.

[0011]

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. Figs. 1 to 7 schematically show an intake silencer manufactured by the same method as the method of manufacturing the intake silencer of the present invention. A plurality of splitters 1 are shown to be installed in parallel inside the silencer body, and each splitter 1 is made by independently manufacturing a perforated plate 10 by pressing or the like, and has a sound absorbing material 11 inside and a protective cloth 12 surrounding it. Surround and fill to complete a single item.

FIG. 2 shows a silencer body 2. The body 2 is manufactured as a single piece, and like the splitter 1, its shape is formed using a perforated plate, and then it is filled with a sound absorbing material and a protective cloth to complete the body as a single piece.

FIG. 3 shows the upper cover 3 of the trunk body 2. Like the splitter 1 and the trunk body 2, the upper cover 3 is also filled with sound absorbing material and protective cloth, and the inside thereof is fixed with a perforated plate. ing.

FIGS. 4 and 5 show the front and side views of both end caps 4 to be assembled on both sides of the trunk body 2, and these are also produced as a single piece.

[0015] Next, the torso body 2 was manufactured individually,
Figure 6 shows the splitter 1, upper cover 3, and both end caps 4.
As shown in FIG. 7, when assembling the entire unit, first set the plurality of splitters 1 in parallel at predetermined positions on the main body 2, then attach the upper cover 3 to the main body, and then assemble the caps 4 at both ends. .

After the both end caps 4 are assembled, the openings are covered with vinyl sheets at both ends, and then the body 2 and the cap 4 are sealed 5 by bolting or spot welding.

[0017] This completes the assembly of the intake silencer, and as shown in Fig. 7, air flows through the silencer in the direction indicated by the arrow.

[0018]

As described above, according to the method of manufacturing an intake silencer of the present invention, the following effects can be obtained. (1) By using a weld-free structure for forming and assembling the sound-absorbing part of the intake silencer, it is possible to perform construction without contaminating foreign matter during the work, and since there is no welding work, the work can be done in a place with a good working environment. Construction is now possible. (2) By making the silencer body a structure that can be disassembled, the inside of the sound absorption part can be inspected. (3) According to the method for manufacturing an intake silencer of the present invention, assembly can be performed that eliminates the possibility of foreign matter getting inside the intake silencer, thereby eliminating damage to the inside of the gas turbine.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a splitter used in the present invention.

FIG. 2 is a sectional view of the body of the intake silencer of the present invention.

FIG. 3 is a sectional view showing how the upper cover of the body of the intake silencer of the present invention is attached.

FIG. 4 is a front view of both end caps of the intake silencer.

FIG. 5 is a side view of the both end caps.

FIG. 6 is a sectional view of the intake silencer according to the present invention in an assembled state.

FIG. 7 is a sectional view showing the action of the intake silencer.

FIG. 8 is a side sectional view of a conventional intake silencer.

FIG. 9 is a front sectional view of a conventional intake silencer.

10 is an enlarged view of section C in FIG. 9. FIG.

11 is an enlarged perspective view of section D in FIG. 8. FIG.

[Explanation of symbols]

1 Splitter 2 Trunk body 3 Upper body cover 4 Both end caps 5 Seal part after spot welding 10 Porous plate 11 Sound absorbing material 12 Protective cloth

Claims (1)

[Claims] Claim 1: A first step of sequentially placing a sound absorbing material, a protective cloth, and a U-shaped perforated plate inside a trunk body having a U-shaped cross section; The second step is to form the outer wall with a perforated plate and install a splitter filled with sound absorbing material and protective cloth inside, and then the third step is to attach the main body upper cover to the U-shaped opening side of the main body. A method for producing an intake silencer, characterized in that the intake silencer is sequentially assembled by the step of (1) and (4) of covering and fixing a cap from the outside of the side surface of the body and the upper cover of the body.