JP2002030942A - Vertical gas turbine device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical gas turbine device to reliably reduce the generation of noise of the lower part of a package, where reduction of the generation of noise is heretofore difficult to make. SOLUTION: A vertical gas turbine 14 and a vertical reduction gear 15 are vertically stored at the internal part of a soundproof enclosure 12 to cover an upper end and a periphery. The vertical reduction gear 16 is fixed at a package 18, an output shaft 28 of the vertical reduction gear 16 is protruded to a position below the package base 18 and packaged. A lower noise control system 40 having a flat plate-form noise insulation panel 44 to shield a space below a package is situated below or at the internal part of the package case 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaged vertical gas turbine device which can reduce the installation space by reducing the size and size of the device, for example.
In particular, the present invention relates to a vertical gas turbine device in which noise is reduced by taking soundproofing measures at a lower part of a package.

[0002]

2. Description of the Related Art For example, as a prime mover for driving a pump in a drainage plant, a gas turbine has recently been used because it is easy to maintain and manage and easily deal with environmental problems such as noise and vibration around the plant. is increasing. Further, in these facilities, since the entire apparatus is compact and the installation space in the drainage station can be reduced, the vertical gas turbine and the vertical reducer are vertically connected to each other. A pump device has been developed in which the main shaft of a vertical pump is connected to the lower end of an output shaft extending downward in the vertical direction.

FIG. 5 shows an example of a vertical pump device using a vertical gas turbine device 10. This vertical pump device is installed in, for example, a drainage pump station, and is soundproof covering the upper end and the surroundings. A vertical gas turbine device 10 is provided in which an upright gas turbine 14 and an upright speed reducer 16 are vertically connected and housed inside an enclosure 12, and the upright speed reducer 16 is fixed to a package base 18 and packaged. Is
It is installed on a gantry 22 mounted on a vertical pump 20. The vertical pump 20 is provided on the floor 24 of the building.
The main shaft 26 and an output shaft 28 extending downward from the speed reducer 16 are connected to each other via a coupling 30. Thus, when the gas turbine 14 is driven, the main shaft 26 of the vertical pump 20 is driven via the vertical reducer 16 and the coupling 30 to drain water.

[0004]

However, in a conventional package type vertical gas turbine device,
Since the reducer is firmly installed on the package base and the drive torque of the reducer is transmitted to the output shaft,
There has been a problem that vibrations from the gas turbine and the speed reducer are propagated through the package base to the installation gantry and driven equipment, and noise is generated below the package base. Here, ambient noise generated by the gas turbine and the reduction gear is reduced by the soundproof enclosure. However, it is generally difficult to take soundproof measures for the lower part of the package base, which is the transmission surface of the drive torque, due to structural restrictions. Was.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vertical gas turbine device which can surely reduce noise at the lower portion of a package, which has been difficult in the past.

[0006]

According to the first aspect of the present invention, there is provided a soundproof enclosure which covers an upper end and a periphery thereof.
A packaged vertical type in which a vertical gas turbine and a vertical reducer are housed vertically and this vertical reducer is fixed to a package base, and the output shaft of the vertical reducer projects below the package base. In the gas turbine device, a lower soundproof device having a flat soundproof panel that shields a lower portion of the package is provided below or inside the package base.

As a result, at the lower part of the package, transmitted sound is emitted from the entire lower surface of the reduction gear and transmitted through the package, and this transmitted sound is transmitted to the soundproof panel of the lower soundproofing device provided below or inside the package base. The noise transmitted to the lower part of the package by shielding can be reduced.

According to a second aspect of the present invention, a vertical gas turbine and a vertical reducer are vertically housed in a soundproof enclosure covering an upper end and a periphery thereof, and the vertical reducer is fixed to a package base. In a packaged vertical gas turbine device in which the output shaft of the vertical reducer is projected below the package base, a flat soundproof panel that shields below the package is provided below or inside the package base. A vertical gas turbine device comprising a lower soundproofing device having a cylindrical soundproofing cover surrounding the periphery of an output shaft.

As a result, in the lower part of the package, the transmitted sound emitted from the entire lower surface of the speed reducer and passing through the lower part of the package increases, and this transmitted sound is provided by the lower soundproofing device provided below or inside the package base. The sound can be shielded by the panel and the sound leaking from around the output shaft can be reduced by the soundproof cover, so that the noise transmitted below the package can be reduced.

According to a third aspect of the present invention, a vertical gas turbine and a vertical reducer are vertically housed in a soundproof enclosure that covers the upper end and the periphery thereof, and the vertical reducer is fixed to a package base. And a package support frame for supporting the entire package in contact with the package base and a peripheral edge of the package base in a packaged vertical gas turbine device in which the output shaft of the vertical reducer projects below the package base. Or, a vibration isolator is interposed between a base support plate and a base frame constituting the package base.

Thus, vibration transmitted by solid propagation from the package base to which the vertical speed reducer is fixed to the package support frame, or from the base support plate constituting the package base to the base frame is attenuated and reduced by the vibration-proof rubber to reduce noise. The effect can be improved. The vibration damping rubber has a different effect of attenuating the vibration depending on the degree of tightening.

According to a fourth aspect of the present invention, there is provided a method according to the present invention, wherein: between the support plate disposed on the lower surface of the package base and the package support frame; or between the base support plate and the support plate disposed on the upper surface of the base frame. 4. A vertical gas turbine apparatus according to claim 3, further comprising a pin for transmitting a driving torque downward. Thus, the driving torque can be transmitted downward with a mechanically strong structure by mechanical connection using pins without relying on the frictional force of the vibration isolating rubber.

According to a fifth aspect of the present invention, at least one of the support plate and the package support frame, or at least one of the support plate and the base frame body,
5. The vertical gas turbine device according to claim 3, wherein a stopper for regulating a tightening amount of the vibration isolating rubber is provided. This makes the anti-vibration rubber more free and enhances the effect of preventing vibration, and even if the anti-vibration rubber deteriorates, uneven distortion and axial displacement may occur in the package. Can be prevented.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall configuration of a vertical gas turbine device according to a first embodiment of the present invention. This vertical gas turbine device 10 has a soundproof enclosure that covers the upper end and surroundings and reduces peripheral noise. The vertical gas turbine 14 and the vertical reducer 16 are vertically connected and housed in the interior 12, the vertical reducer 16 is fixed to the package base 18, and the output shaft 28 is exposed downward. It is packaged.

A lower soundproofing device 40 for reducing noise at the lower part of the package is mounted below the vertical gas turbine device 10, and the vertical gas turbine device 10 is connected via the lower soundproofing device 40. A main shaft 26 such as a vertical pump (not shown) is connected via a coupling 30 to an output shaft 28 which is installed on the gantry 22 and extends downward from the vertical speed reducer 16.

The lower soundproofing device 40 has a cylindrical soundproof cover 42 surrounding the output shaft 28 and the coupling 30.
A sound-insulating panel 44 in the form of a rectangular flat plate arranged around the sound-insulating cover 42, a package support frame 48 with an anti-vibration rubber 46 attached to the upper surface, and a base frame 18 a and a package support frame 48 of the package base 18. Bolt 5 to connect
0 and a pin 52 spanned between the base frame 18a and the package support frame 48.

FIG. 2 is a view showing the details of the lower soundproofing device 40. A support plate 54 and a vibration-proof rubber 46 are vertically arranged between a base frame 18a and a package support frame 48, and the base frame 18a The base frame 18a and the package support frame 48 are connected vertically by bolts 50 extending from the package support frame 48 to the base frame 18a. And the pin 52
Has a bulge portion substantially equal to the thickness of the vibration-isolating rubber 46 at the middle along its length direction, and is fixed by driving its lower end into a through hole provided in the package support frame 48,
The lower end is loosely fitted in a through hole provided in the support plate 54.

Accordingly, the vibration transmitted by solid propagation from the package base 18 to which the vertical speed reducer 16 is fixed to the package support frame 48 is attenuated and reduced by the vibration isolating rubber 46, so that the soundproofing effect can be improved. On the other hand, the pins 52 are for transmitting the driving torque from the base frame 18a of the package base 18 to the package support frame 48 side via the support plate 54, and thus the support plate 54, the package support frame 48 The drive torque can be transmitted to the package support frame 48 side by a mechanically strong structure by the mechanical connection by the pins 52 without relying on the frictional force of the vibration isolating rubber 46 by mounting the pins 52 therebetween. it can.

The vibration damping rubber 46 has a different effect of attenuating the vibration depending on the degree of tightening, and the more free, the higher the effect of attenuating the vibration. For this reason, FIG.
As shown in FIG. 7, a stopper 56 composed of a bolt screwed to the package support frame 48 is disposed adjacent to the bolt 50, and a nut 58 for fixing the stopper 56 is provided on the stopper 56.
Is screwed. Then, the stopper 56 is fixed via a nut 58 with the tip of the stopper 56 lightly touching the support plate 54. Thereafter, the package base 18 and the package support frame 48 are fixed via the bolt 50 and the double nut 60. Are connected up and down.

That is, the bolt 50 is used to
This is for connecting the base frame body 18a and the package support frame 48 up and down without tightening, and the pin 52 mainly receives the shearing force. Moreover, by arranging the stopper 56 in this way, even if the vibration isolating rubber 46 contracts due to deterioration or aging, it is possible to prevent the package from sinking unevenly or causing abnormal axial displacement. Can be.

A base cover 62 having a flat soundproof panel 44 mounted on the upper surface thereof is provided on the inner peripheral surface of the package support frame 48. A cylindrical soundproof cover is provided on the inner peripheral surface of the base cover 62 at the inner peripheral end thereof. Coupling covers 64 to which are attached 42 are respectively attached.

Here, the package base 18 has a base frame 18a and a base support plate 18b, and the reduction gear 1 is mounted on an upper surface of the base support plate 18b via a mounting seat 16a.
6 are attached.

As a result, at the lower part of the package, the transmitted sound is emitted from the entire lower surface of the speed reducer 16 and transmitted through the lower part of the package. 44, and a soundproof cover 4 for preventing sound leaking from around the output shaft 28.
2, the noise transmitted below the package can be reduced.

The package support frame 48 is made of a mold steel, and a sound insulating material 66 is filled in the outer peripheral concave portion of the mold steel, and the opening is closed by a soundproof plate 68. Further, the sides of the package base 18 and the package support frame 48 that are placed on the upper ends are surrounded by an oil-proof cover 70.

FIG. 4 shows a main part of a vertical gas turbine device according to a second embodiment of the present invention, in which a lower soundproofing device is incorporated inside a package base 18. That is, the support plate 54 and the vibration-proof rubber 46 are vertically arranged between the base frame 18a and the base support plate 18b which constitute the package base 18, and the pin is inserted between the base support plate 18b and the support plate 54. 52, and a soundproof panel 44 is attached to the base frame 18a. Other configurations are the same as those of the first embodiment.

[0026]

As described above, according to the present invention,
The transmitted sound can be shielded by the soundproof panel of the lower soundproofing device provided below or inside the package base, and the sound leaking from around the output shaft can be reduced by the soundproof cover to reduce the noise transmitted below the package. . Also, by mounting a vibration-proof rubber between the package base and a package supporting frame that abuts on the periphery of the package base to support the entire package, or a base supporting plate and a base frame that constitute the package base. In addition, the vibration transmitted by the solid propagation downward can be attenuated and reduced by the vibration isolating rubber, and the soundproofing effect can be improved. Furthermore, by combining these,
Sound reduction can be effectively prevented by reducing both the solid propagation and the transmitted sound.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a vertical gas turbine device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the lower soundproofing device of FIG.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a diagram corresponding to FIG. 2 of a gas turbine device according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram of a vertical pump device using a vertical gas turbine device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vertical gas turbine apparatus 12 Soundproof enclosure 14 Vertical gas turbine 16 Vertical reducer 16a Mounting seat 18 Package base 18a Base frame material 18b Base support plate 22 Mount 26 Main shaft 28 Output shaft 30 Coupling 40 Lower soundproofing device 42 Soundproof cover 44 Soundproof panel 46 Anti-vibration rubber 48 Package support frame 50 Bolt 52 Pin 54 Support plate 56 Stopper 58 Nut 60 Double nut 62 Base cover 64 Coupling cover 66 Sound insulation material 68 Soundproof plate 70 Oilproof cover

Claims (5)

[Claims] 1. A vertical gas turbine and a vertical reducer are vertically housed inside a soundproof enclosure covering an upper end and a periphery thereof, and the vertical reducer is fixed to a package base, and the vertical reducer is fixed to a package base. In a packaged vertical gas turbine device having an output shaft protruding below a package base, a lower soundproof device having a flat soundproof panel that shields a lower portion of the package is provided below or inside the package base. A vertical gas turbine device characterized by the following. 2. A vertical gas turbine and a vertical reducer are vertically housed in a soundproof enclosure that covers the upper end and the periphery of the vertical reducer. A packaged vertical gas turbine device having an output shaft protruding below a package base, wherein a flat soundproof panel that shields a lower portion of the package and a periphery of the output shaft are enclosed below or inside the package base. A vertical gas turbine device provided with a lower soundproofing device having a cylindrical soundproofing cover. 3. A vertical gas turbine and a vertical reducer are vertically housed in a soundproof enclosure that covers the upper end and the periphery of the vertical reducer. In a packaged vertical gas turbine device having an output shaft protruding below a package base, the package base and a package support frame that abuts on a periphery of the package base to support the entire package,
Alternatively, an anti-vibration rubber is interposed between a base support plate and a base frame constituting the package base. 4. A drive torque is transmitted downward between a support plate disposed on the lower surface of the package base and the package support frame, or between the base support plate and a support plate disposed on the upper surface of the base frame body. The vertical gas turbine device according to claim 3, wherein a pin is mounted. 5. A stopper for regulating a tightening amount of the vibration-proof rubber is provided on at least one of the support plate and the package support frame or at least one of the support plate and the base frame. Claim 3
Or the vertical gas turbine device according to 4.