JP2003138909A - Supporting structure of soundproof enclosure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the supporting structure of a soundproof enclosure that is integrated with a frame, in which generation of noise from the enclosure is prevented. SOLUTION: This supporting structure of a soundproof enclosure is applied to a gas turbine generator, in which the soundproof enclosure 2 that covers the frame 1 and apparatuses installed thereon is supported by the frame 1 through an elastic member 17 such as rubber. Therefore, the enclosure 2 is integrated with the frame 1, and vibrations from the frame 1 are buffered by the elastic member 17, so that the vibrations are not directly transmitted to the enclosure and thereby generation of noise from the enclosure 2 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof enclosure support structure applied to a gas turbine power generator.

[0002]

2. Description of the Related Art A gas turbine power generator installed in a factory or the like to supply electric power is known. In this case, as shown in FIG. 9, usually, equipment (not shown) such as a gas turbine engine and a generator is installed on a gantry 101 made of H steel or the like, and all of these are installed as soundproof enclosures (hereinafter simply referred to as enclosures). It is covered with 102.
Particularly in the low noise type, the enclosure 102 is supported on the floor outside the gantry 101, and the gantry 101 and the entire device are completely housed in the enclosure 102 to minimize the leakage of vibration noise to the outside. I'm out.

[0003]

By the way, the installation work of the gas turbine power generator was an on-site work of installing each equipment such as a pedestal, an engine and the enclosure at an actual installation place. Therefore, a relatively long construction period of about 1 to 2 months was required, which was a problem.

On the other hand, in order to reduce the on-site work, all equipment and enclosures are assembled on a stand at another place such as a factory, and they are integrated into one unit, which is transported to the installation place by a vehicle and installed. It is desirable to just do it.

However, since the conventional enclosure as described above is not supported by the pedestal but supported by the floor, it cannot be integrated with the pedestal structurally and cannot be made into one unit. In addition, the maximum width that can be loaded and transported in a vehicle is stipulated by law to be 3000 mm, but the enclosure is located outside the pedestal, which is disadvantageous in terms of suppressing the maximum width. On the other hand, there are some enclosures that are supported on a pedestal, but since the mutual support parts are directly connected or metal touch, and the enclosure was directly supported by the pedestal, the vibration of the gantry is directly transmitted to the enclosure, The enclosure became a noise source like a resonance box, and the noise was rather loud.

Therefore, in view of the above problems, the present invention was devised, and its purpose is to integrate an enclosure with a gantry,
Another object of the present invention is to provide a support structure for a soundproof enclosure that can prevent the generation of noise from the enclosure.

[0007]

A support structure for a soundproof enclosure according to the present invention is applied to a gas turbine power generator, and a soundproof enclosure for covering a pedestal and equipment installed thereon is made of rubber or the like. It is supported on the gantry via a member.

According to this, the enclosure can be integrated with the gantry. Moreover, since the vibration of the gantry is buffered by the elastic member, it is not directly transmitted to the enclosure, and the generation of noise from the enclosure can be prevented.

Here, the side wall portion of the soundproof enclosure is positioned above the peripheral edge of the upper surface of the pedestal and flush with the outer end of the pedestal, and inside the side wall portion, the side wall portion and the side wall portion are provided. An anti-vibration support member is provided to connect with the gantry, the anti-vibration support member is provided between the bracket and the L-shaped bracket attached to the inside of the side wall portion, and the load of the soundproof enclosure is interposed between the bracket and the gantry. It is preferable to provide a flat rubber plate as the elastic member for supporting the.

According to this, the planar size of the enclosure and the gantry are the same, which is advantageous for suppressing the overall planar size, especially the width.

Further, it is preferable to provide a steadying means for limiting the swing of the soundproof enclosure with respect to the mount within a fixed amount.

Further, it is preferable that a sound insulating material is provided on the outer surface of the frame.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 8 schematically shows a support structure of the soundproof enclosure according to this embodiment. This support structure is applied to a gas turbine power generator, and equipment such as a gas turbine engine and a generator (not shown) is mounted on a flat base 1
Are installed, and the whole is covered with a soundproof enclosure (hereinafter also simply referred to as an enclosure) 2 from above. The gantry 1 is made of H steel or the like in a well shape and is installed on the concrete foundation F at the installation site. Enclosure 2
Is a rectangular parallelepiped box whose bottom is opened, and is vibration-proof supported on the gantry 1 via a plurality of vibration-proof support members 9. The anti-vibration support member 9 contains rubber as an elastic member, and this rubber damps the vibration of the gantry 1 and prevents the direct transmission of the vibration from the gantry 1 to the enclosure 2. The support structure will be described in detail below.

As shown in FIG. 1, FIG. 2 and FIG. 7, the enclosure 2 has a column member 4 and a beam member 5 which are hollow skeleton pipes and have a basic skeleton, and between the column member 4 and the beam member 5. It is integrally configured with the panel material 6 to be attached. The side wall portion 2a of the enclosure 2 is positioned along the upper surface peripheral edge portion 1a of the gantry 1 with a predetermined gap h above the rim 1 and does not protrude from the outer end 1b of the gantry 1 and is flush therewith. Is located.

As shown in FIG. 7, the side wall 2a is provided with a plurality of entrances 7 and doors 8 for allowing people to enter and exit at appropriate places. Further, an opening 8 for projecting the exhaust pipe 7 of the gas turbine engine is provided in the side wall portion 2a at one end in the longitudinal direction. Ce represents the centerline of the gas turbine engine and Cg represents the center of the generator. With this support structure, a total of eight anti-vibration support members 9 are provided, four on each side in the width direction.
In the same manner, a total of eight first steady rest members 10 provided on each side in the width direction and a total of four second steady rest members 11 provided on each side in the longitudinal direction are provided. All of these members are provided inside the enclosure side wall 2a. Each will be described below.

As shown in FIGS. 1 and 2, the vibration-proof support member 9 includes a bracket mounting seat 12 fixed to the beam member 5 at the bottom of the side wall 2a from the inside by welding or the like, and a bracket mounting seat 1
2, an L-shaped bracket 14 having a vertical portion 14b fixed by a plurality of bolts 13, a vibration-proof rubber mounting seat 15 fixed to the upper surface of the gantry 1 by welding or the like, and a bracket 14
And a vibration-proof rubber 16 which is interposed between the vibration-proof rubber mounting seats 15 and connects them. Beam 5 here
According to the height dimension of the vertical portion 14b of the bracket 14, there are two upper and lower stages.

The anti-vibration rubber 16 is provided with a flat rubber 17 and a pair of mounting plates 18a and 18b fixed to the upper and lower surfaces thereof, and a plurality of bolts 19 projecting upward are mounted on the upper mounting plate 18a. The mounting plate 18b is integrally provided with a plurality of holes through which the bolts 20 are inserted.
The upper bolt 19 is inserted into the horizontal portion 14a of the bracket 14, and the nut 21 is tightened to fix the anti-vibration rubber 16 and the bracket 14, and the lower mounting plate 18
The vibration-proof rubber 16 and the pedestal 1 are fixed by fastening b to the vibration-proof rubber mounting seat 15 with the bolt 20. The horizontal portion 14a of the bracket 14 is provided with a counterbore groove 22 for forming a seat for the nut 21.

In this way, the enclosure 2 is attached to the anti-vibration rubber 1
6, since it is supported on the gantry 1 via the rubber 17, it is possible to integrate the enclosure 2 with the gantry 1 into one unit. Further, the vibration of the gantry 1 can be buffered by the rubber 16, and the direct transmission of the vibration to the enclosure 2 and the noise generation from the enclosure 2 can be prevented. In the above structure, the rubber 16 supports the load of the enclosure 2.

A gap h is formed between the lower surface of the enclosure side wall portion 2a and the upper peripheral portion 1a of the gantry 1, and a rubber plate 23 as a seal member is inserted into this gap h. The rubber plate 23 is only for filling the gap h and does not support the load. The rubber plate 23 is provided for one turn along the enclosure side wall 2a, and all the gaps h are covered by the rubber plate 2.
Sealed at 3. This can prevent sound leakage to the outside.

The outer surface of the frame 1 is not covered with the enclosure 2. For this reason, as it is, the gantry 1 is exposed to the outside, and the vibration of the gantry 1 causes external noise. In particular, since the gantry 1 is made of H steel, a recess 24 is formed on the outer side surface portion, and the recess 24 causes a reverberant sound, which promotes noise. Therefore, to prevent this, mount 1
A sound insulating material 25 is provided on the outer side surface of the. The sound insulating material 25 is made of lagging here, and is provided by filling the recess 24. As a result, it is possible to prevent the generation of noise and reverberation from the outer surface of the gantry 1. Cover 26 for covering the sound insulating material 25
Is attached to the outer surface of the enclosure side wall 2a. This cover 26 is also advantageous in soundproofing. The sound insulating material 25 and the cover 26 are provided for one round of the gantry 1 like the rubber plate 23 (see FIGS. 3 to 6).

As shown in FIG. 3, the first steady rest 10
Is a movable piece mounting seat 27 fixed to the pillar member 4 and the beam member 5 at the bottom of the side wall portion 2a from the inside by welding or the like, and the movable piece mounting seat 2
7, a steady rest movable piece 30 attached by a plurality of bolts 29 with a liner 28 sandwiched between them, a fixed piece attachment seat 31 fixed to the upper surface of the gantry 1 by welding or the like, and a fixed piece attachment seat 31.
It is mainly composed of a steady rest fixing piece 34 which is attached by a plurality of bolts 33 with the liner 32 interposed therebetween.

The steady rest movable piece 30 is L-shaped and has a protruding portion 35 protruding inward at its lower end. The steady rest fixing piece 34 is fixed to the fixing piece mounting seat 31 so as to overlap the protrusion 35.
To the outside. Between the steady rest movable piece 30 and the steady rest piece 34, minute gaps h1 and h2 (largely drawn in the figure for easy understanding) are formed in the horizontal direction and the vertical direction, respectively.

When the enclosure 2 is elastically supported as described above, the enclosure 2 shakes (tilts) with respect to the gantry 1 due to an earthquake or the like, and therefore the first steadying member 10 is provided to limit the shake within a certain amount. . When the enclosure 2 swings with respect to the gantry 1, the steady rest movable piece 30
Comes into contact with the steady rest 34, preventing further runout. The amount of shake is limited within the elastic deformation area of the rubber 17 of the anti-vibration support member 9, and the gaps h1, h2
Is adjusted by the liners 28 and 32.

The second steadying member 11 shown in FIG. 6 has the same purpose and configuration, and the portions corresponding to the first steadying member 10 are designated by the same reference numerals in the figure. However, in this case, since the movable member mounting seat 27, the liner 28, and the steady rest movable member 30 are provided at a position where there is no pillar member 4 but only the beam member 5, the height dimension is such that the movable member mounting seat 27, the liner 28 and the steady rest movable member 30 can be mounted only on the beam member 5. The smaller one is used. A minute gap h3 in the horizontal direction is formed between the protruding portion 35 of the steady rest movable piece 30 and the steady rest fixing piece 34, and this gap h3 is the liner 2
It can be adjusted by changing the thickness of 8. There is no gap in the height direction and no liner for adjusting the gap.
When the tip of the protrusion 35 of the steady rest movable piece 30 comes into contact with the side surface of the steady rest fixing piece 34, the shake of the enclosure 2 is restricted. While the first steady rest member 10 limits the runout of the enclosure 2 in the width direction, the second steady rest member 1
1 limits the runout of the enclosure 2 in the longitudinal direction. Thus, these first and second steady rests 10 and 11 form a steady rest.

Since it is premised that the enclosure 2 is integrated with the pedestal 1 and is transported by a vehicle, the enclosure 2 is mounted on the pedestal 1 so that the enclosure 2 is not shaken and the rubber 17 is loaded during the transportation. It is preferable to fix it firmly to. Therefore, the movable piece mounting seat 27 and the fixed piece mounting seat 31 of the first steady member 10 can be used to fix the enclosure 2 and the pedestal 1. The rigid connection means for this will be described below.

That is, as shown in FIG. 4, the movable piece mounting seat 27 and the fixed piece mounting seat 31 are used before and during transportation by the vehicle.
The component parts of the first steadying member 10 are not attached to and, instead, the L-shaped transport bracket 36 is bolted to the movable piece mounting seat 27 and the fixed piece mounting seat 31 using the same bolt holes. It is attached by 37 and 38. The lock nut 3 is previously attached to the horizontal portion of the carrying bracket 36.
The jack bolt 40 to which 9 is screwed is screwed, and the jack bolt 40 is tightened to press it against the upper surface of the fixed piece mounting seat 31, and the lock nut 39 is tightened to lock the jack bolt 40. And 1 are firmly fixed. Accordingly, even if the enclosure 2 is elastically supported, the enclosure 2 does not swing during transportation, and the enclosure 2 can be accurately vertically supported on the gantry 1 by adjusting the position of the jack bolt 40.

On the other hand, after a certain period of time has passed after the enclosure 2 was installed at the actual installation location, the anti-vibration rubber 1
6 and the rubber plate 23 are deteriorated, it becomes necessary to replace them. Therefore, the movable piece mounting seat 27 and the fixed piece mounting seat 31 of the first steadying member 10 can be used to exchange them.

That is, as shown in FIG. 5, the movable piece mounting seat 2
7 and the component of the first steadying member 10 attached to the fixed piece mounting seat 31 are removed, and instead, the L-shaped push-up bracket 41 is attached to the movable piece mounting seat 27 in a part of the same bolt hole. Is attached by the bolt 42 and the push-up jack 43 is attached to the fixed piece attachment seat 31.

When exchanging the anti-vibration rubber 16 and the rubber plate 23, the nut 21 shown in FIG. 1 is removed in advance, the push-up jack 43 is extended upward, and the push-up bracket 41 is pushed up. Two
Raise the whole. At this time, since the nut 21 is removed, the bolt 19 of the vibration-proof rubber 16 is attached to the bracket 14
The enclosure 2 can be lifted up through the hole. Next, the bolt 20 is removed to remove the anti-vibration rubber 16, the rubber plate 23 is pulled out from the side and removed, and each is replaced with a new one, and the bolt 20 is tightened.
And the nut 21 is tightened to complete the replacement work. As described above, in the present embodiment, at least the rubber 17 is replaced, so that a raising means for raising the enclosure 2 is provided.

As described above, according to the present embodiment, since the enclosure 2 is supported on the gantry 1, it can be integrated into one unit and can be transported by a vehicle, which is very advantageous for reducing on-site work. Further, since the enclosure 2 is supported by the vibration proof via the rubber 17, the vibration of the gantry 1 is buffered by the rubber 17, and the vibration of the enclosure 2 is reduced.
It is possible to prevent direct transmission to the enclosure and generation of noise from the enclosure 2.

Further, the enclosure side wall 2a is attached to the pedestal 1
Since it does not stick out to the outer side, it is possible to reduce the planar size, especially the width, as compared with the conventional example shown in FIG. 9, which is also advantageous for transportation by vehicle. Further, since the enclosure side wall portion 2a is positioned so as to be flush with the outer end 1b of the gantry 1, the enclosure side wall portion 2a is positioned just outside and a maximum internal space can be secured.

Further, the first and second steady rests 10,
By 11, the shake of the enclosure 2 can be limited within a certain amount, safety can be ensured, and early deterioration of the rubber 17 due to repeated excessive shake can be prevented. Then, the sound insulating material 25 can prevent noise and reverberant sound from being generated from the outer surface of the gantry 1.

When the noise level of this embodiment was actually measured, it was the same level as that of the conventional low noise type shown in FIG. Therefore, the present embodiment can be downsized as a whole without impairing the soundproof performance.

Various other embodiments of the present invention are possible. In this embodiment, the elastic member is rubber, but it may be a spring, a spring, or the like. However, rubber is preferable because it has a damping effect due to internal friction and is also low in cost.

[0036]

In summary, according to the present invention, the excellent effect that the enclosure can be integrated with the gantry and the generation of noise from the enclosure can be prevented is exhibited.

[Brief description of drawings]

FIG. 1 is a side view showing a vibration isolation support member.

FIG. 2 is a front view of the same.

FIG. 3 is a side view showing a first steady rest.

FIG. 4 is a side view showing a case where a carrying bracket is attached to a position of a first steady rest.

FIG. 5 is a side view when a push-up bracket and a push-up jack are attached to the position of the first steady rest.

FIG. 6 is a side view showing a second steady member.

FIG. 7 is a cross-sectional plan view showing the support structure of the soundproof enclosure according to the present embodiment.

FIG. 8 is a schematic perspective view of the same.

FIG. 9 is a schematic perspective view showing a support structure of a conventional soundproof enclosure.

[Explanation of symbols]

1 stand 1a Top surface peripheral portion 1b outer edge 2 Soundproof enclosure 2a Side wall 9 Anti-vibration support member 10 First steady member 11 Second steady rest 14 bracket 17 rubber 25 sound insulation

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F01K 13/00 F01K 13/00 S F02C 7/00 F02C 7/00 E (72) Inventor Takao Hosoi Tokyo 1-15-18 Hyakunincho, Shinjuku-ku INC Engineering Co., Ltd.

Claims (4)

[Claims] 1. A soundproof enclosure, which is applied to a gas turbine power generator, and in which a soundproof enclosure covering a pedestal and a device installed thereon is supported on the pedestal through an elastic member such as rubber. Support structure for the enclosure. 2. A side wall portion of the soundproof enclosure is positioned on a peripheral edge of an upper surface of the pedestal and flush with an outer end of the pedestal, and the side wall portion and the pedestal are provided inside the side wall portion. Is provided between the bracket and the L-shaped bracket attached to the inside of the side wall, and the load of the soundproof enclosure is placed between the bracket and the frame. The support structure for a soundproof enclosure according to claim 1, further comprising a flat rubber plate as the elastic member for supporting. 3. The support structure for a soundproof enclosure according to claim 1, further comprising a steadying means for restricting a shake of the soundproof enclosure with respect to the mount within a predetermined amount. 4. The support structure for a soundproof enclosure according to claim 1, wherein a sound insulation material is provided on an outer surface portion of the gantry.