JPH02204635A - Package for gas turbine power generating set - Google Patents

Abstract

PURPOSE:To lower the overall height of a generating set by installing a partition wall which partitions off the inside of a package into an upper passage space and a generator setup room at the lower side, forming a ventilating inlet passage and a ventilating outlet passage being interconnected to this generator setup room in the upper passage space, while installing a duct at the longitudinal direction side of a side wall, and also installing a fan, feeding ventilating air, in the inner part of this duct. CONSTITUTION:Air taken in a generator room 12 from a ventilating inlet passage 22 by a fan 72 flows into a passage part 61 from an opening 60 after cooling every part of a generator set 3, and then it is discharged out of a ventilating outlet 68 after passing through an opening 62, passage parts 63, 65 and 66. When a part of a ventilating outlet passage 26 is formed as being projected to each side of package side walls 8, 9, any possible increase in the overall height of a generating set can be prevented in this way. Therefore even in such a room that is low in a ceiling and projected of its beam from the ceiling, the generating set can be installed. Since the ventilating outlet passage 26 is constituted of plural numbers of bent passage parts, it has a silencing function, thus a ventilating noise and other noises are effectively abated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power generation device of the type in which a generator is driven by a gas turbine engine, and more specifically to a power generation device in which such an engine and generator are housed. This relates to a package (outer wall structure) with a soundproof structure.

[Prior Art] This type of power generation device is described in Japanese Patent Application Laid-open No. 186019/1982 and Japanese Patent Application No. 81081/1983, and generally,
It is installed inside a high-rise building for private power generation. In such generators, a ventilation passageway and a ventilation outlet passageway with an electric fan are provided to ventilate the interior of the package. In addition, since such devices are placed indoors, noise standards are set strictly, and as a result,
The ventilation outlet passage is provided with a noise reduction part such as a curved passage part on the downstream side of the electric fan.

[Problems to be Solved by the Invention] However, in the conventional device, the fan is provided above the generator installation room in an upward position, and a relatively long passage portion having a noise-reducing function is provided further above the fan. . Therefore, the total height of the device increases, and it may become impossible or difficult to install the device due to obstacles such as beams on the ceiling of the building.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a generator set including a generator and a gas turbine engine that drives the generator, and a package for accommodating the generator set. The package has a pair of left and right side walls extending in the front-rear direction,
A generally rectangular parallelepiped-shaped outer wall portion including a pair of front end walls and rear end walls extending in the left-right direction and an upper wall extending horizontally, and the inside of the package is divided into an upper passage space and a generator installation room below. The generator set is installed in the generator room with the engine adjacent to the front end wall with the central axis of the generator set generally extending in the longitudinal direction, and the generator set is installed in the generator room. A communicating ventilation passage and a ventilation outlet passage are formed in the upper passage space, a first opening for a ventilation outlet is provided at the front end of the partition, and a first portion of the ventilation outlet passage communicating with the first opening is provided. formed at the front end of the upper passage space,
A second opening communicating with the first passage portion is formed in the front end of at least one side wall, a duct is provided on the left-right direction outer side of the side wall in which the second opening is provided, and the second opening is provided inside the duct. The present invention is characterized in that a second passage portion extending rearward from the rear is provided, a fan is provided in the second passage portion to send ventilation air rearward, and a rear end of the second passage portion is communicated with a ventilation outlet.

[Embodiment] FIG. 1 is a schematic vertical cross-sectional view of a power generation device according to an embodiment of the present invention. FIG. 2 is a schematic horizontal cross-sectional view of the device shown in FIG. 1. Specifically, the upper half of FIG. 2 shows the mA-IIA cross section of FIG. The IIB-JIB cross section of the figure is shown. FIG. 3 is a sectional view taken along the line ■-■ in FIG.

In FIG. 1, a generator set 3 consisting of a generator 1 and a gas turbine engine 2 that drives it is installed inside a package 5, and their center line 0-. 0 (for example, the center line of the drive shaft of the generator 1) extends horizontally, and is installed on a mounting base on the foundation.

In the following description, a direction parallel to the center line O-0 will be referred to as a vertical direction or a front-back direction, and a direction perpendicular to and horizontal to the center line O-0 will be referred to as a horizontal direction or a left-right direction.

The package 5 has a generally rectangular parallelepiped shape, and has a section 1 extending in the horizontal direction.
It comprises a pair of (front and rear) vertical end walls 6.7, a pair of (left and right) vertical side walls 8.9 (FIG. 2) extending in the longitudinal direction, and a horizontal top wall 10 located at the top. ing. Furthermore, a horizontal partition wall 11 is arranged above the package 5. The internal space of the package 5 is divided by the partition wall 11 into an upper passage space and a generator installation chamber 12 below the passage space, and the generator set 3 is installed in the generator installation chamber 12.

A silencer 15 is located adjacent to the front end wall 7 of the package 5.
is located. The muffler 15 is a box-like structure having an exhaust muffling passage therein, and an outlet 16 is connected to another exhaust passage (not shown).

The above-mentioned power generation device is provided with an intake inlet passage 20, a ventilation passage 22, an outlet opening 24, and a ventilation outlet passage 26 as main passage sections, and in order to form these passages, a hood is provided in the package 5. 30.32 and duct 33.34 (
(Fig. 3) is also installed. Furthermore, the upper wall 10 and the partition wall 11
In between are vertical partition walls 35 (FIG. 2), 36, 37 for forming an intake inlet passage 20 and a ventilation inlet passage 22.

As shown in FIGS. 1 and 2, the hood 30 extends rearward from the end wall 6 over the same width as the end wall 6, and forms the upstream portions of the intake inlet passage 20 and the ventilation inlet passage 22 therein, The lower end is open and the intake inlet is 50 and the ventilation population is 51.
is formed. The upper end of the hood 30 is at the same height as the upper wall 10, and in the illustrated embodiment, the lower end is located somewhat lower than the partition wall 11.

As shown in FIG. 2, the passage inside the hood 30 is divided into three passages by two partition walls 38 spaced apart from each other in the left and right direction, and the passages on both sides are connected to the ventilation inlet passage 22. , and the middle passage portion is an intake inlet passage 20.
is formed.

The partition walls 35, 36 are orthogonal to each other, and the hood 30
A passageway connected to a ventilation passageway inside is formed at the rear and both sides of the upper passageway space (the space between the upper wall 10 and the partition wall 11). Openings 52 are provided on both sides of the rear portion of the upper wall 11.
The ventilation inlet passage 22 communicates with the rear part of the generator installation room 12 via the front end opening 52.

Said partition 37 extends laterally between the front parts of the side walls 8.9. The space between the partition wall 37 and the partition wall 36 extending in the horizontal direction constitutes an intake inlet passage 20, and the intake population in the hood 30 is opened through the passage space between the pair of partition walls 35 extending in the vertical direction. It communicates with the passage portion and also communicates with the inside of the hood 32 via the opening 55.

The opening 55 is provided in the side wall 8.9 in front of the partition 36. The hood 32 is attached to the side wall 8.9 so as to cover this opening 55. In the illustrated embodiment, the lower end of the hood 32 opens downward at a position slightly below the partition wall 11 to form an intake inlet 56 .

Near the rear of the partition wall 37, the partition wall 11 is provided with an opening 58 through which the downstream end of the intake inlet passage 20 communicates. As shown in FIG. 1, the intake inlet passage 20 is connected to the intake passage of the engine 2 via an opening 58. Further, although not shown, a silencer is provided in the middle of the intake inlet passage 20.

The silencer is configured, for example, by arranging a plurality of vertical plate-like members extending in the front-rear direction and spaced apart from each other in the left-right direction.

The outlet opening 24 shown in FIG. 1 is provided in the lower half of the end wall 7, through which the exhaust pipe 40 of the engine 2 extends to the muffler 15.

The ventilation outlet passage 26 is configured as follows by a plurality of passage sections and openings. First, at the rear end of the partition wall 11, two first openings 60 are provided at intervals in the lateral direction. The space between the end wall 7 and the partition wall 37 is divided into two left and right spaces (61) by a partition wall 59 arranged between both walls, and each of these spaces is a first passage section 6.
1 is formed. Each passage section 61 communicates with the rear part of the installation chamber 12 via an opening 60. A second opening 62 is provided at the rear end of the side wall 8.9 and communicates with the passage section 61. The duct 33 shown in FIG. 2 is arranged on the left-right outer side of the rear half of each side wall 8.9 and covers the opening 62. A second passage portion 63 extending rearward from the opening 62 is formed inside the duct 33 . The rear end of the passage portion 63 is located approximately in the middle of the package in the front-rear direction.

The duct 34 is integrated with the duct 33 and fixed to the upper wall 10 etc., is located above the duct 33 and the upper wall 10, and extends to the rear of the package 5. A third passage portion 65 extending in the left-right direction is provided at the front portion of the duct 34. Both end portions of the passage portion 65 are located above both passage portions 63 and communicate with them.

Similarly to the duct 33, the wall forming the passage portion 65 of the duct 34 projects outward from the side wall 8.9 and the top wall 10, but the other portion 7° (Fig. 2) extends upward. wall 1
It protrudes backward over the same width as 0.

A fourth passage portion 66 communicating with the passage portion 65 is formed inside the rearward projecting portion 70 . Passage part 6
In the illustrated embodiment, the ventilation outlet 6 opens rearward approximately in the upper vicinity of the partition wall 36 to form a ventilation outlet 68 .

Furthermore, a fan 72 is provided in the second passage portion 63. Fan 72 is a motor-driven axial fan in the illustrated embodiment and is located in the middle of passageway section 63, and more specifically in the middle of passageway section 63.
It is provided behind the passage portion 61 and in front of the passage portion 65, and acts to forcibly discharge the air in the passage portion 63 to the downstream side.

According to the above structure, the air flowing into the generator room 12 from the artificial passage 22 cools each part of the generator set 3, and then flows into the passage part 61 from the opening 60.
3.65.66 and is discharged from outlet 68. Of course, the fan 72 facilitates the exhaust of the ventilation air. In addition, as mentioned above, the ventilation outlet passage 26 is composed of a plurality of bent passage parts, so it has a noise reduction function.
Therefore, ventilation noise and other noises in the passageway 26 can be effectively reduced.

[Effect of the invention] As explained above, according to the present invention, the ventilation outlet passage 26
By forming a portion of the package side wall 8.9 in a laterally projecting position, it is possible to prevent the overall height of the device from increasing due to the ventilation outlet passage 26. Therefore, the power generation device can be installed without any problem even in a room with a low ceiling or a room with a beam protruding from the ceiling.

Further, in the structure of the present invention, the duct 33 for the ventilation outlet passage protrudes laterally as shown in FIG. 3, but this is not a drawback. That is, although not shown, the side wall 8.
9 is provided with a door for carrying out maintenance and inspection of the generator set, and the space 74 (Fig. 3) outside the side wall 8.9 is used for maintenance and inspection by workers through the door opening. It is a space of In other words, in the power generation plant it is essential to provide such a working space outside the side wall 8.9. The duct 33 is placed in the space above the work space 74 (a space that is not used in conventional equipment), and therefore, compared to the conventional equipment, the duct 33 is the cause of the installation of the equipment. There is no increase in the required dimensions of the chamber.

[Another Embodiment] In the illustrated structure, the duct 33.
However, in applications where noise regulations are not strict, the upwardly protruding duct 34 can be eliminated and the duct 33
The outlet of the exhaust outlet passage may be provided at the rear end so as to open rearward.

Also, the duct 33 and the opening 62 can be connected to either side wall 8.9.
It may also be provided only for

[Brief explanation of the drawing]

Fig. 1 is a schematic vertical cross-sectional view of a power generation device according to an embodiment of the present invention;
The figures are IIA-IIA and IIB-IIB sectional views in FIG. 1, and FIG. 3 is a III-m sectional view in FIG. 2. 1... Generator, 2... Gas turbine engine, 3.
... Generator set, 5... Package, 12... Generator installation room, 22... Ventilation inlet passage, 26... Ventilation outlet passage, 33... Duct, 60... First opening ,6
1... First passage portion, 62... Second opening, 63...
・Second passage section, 68...Ventilation outlet, 72...Fan

Claims (1)

[Claims] A generator set including a generator and a gas turbine engine for driving the generator, and a package for accommodating the generator set, the package having a pair of left and right side walls extending in the front-rear direction, and a pair of left and right side walls extending in the left-right direction. A generally rectangular parallelepiped outer wall portion including a pair of front and rear end walls and a horizontally extending upper wall, and a partition wall that partitions the inside of the package into an upper passage space and a generator installation room below. The generator set is installed in the generator room with the engine adjacent to the front end wall with the central axis of the generator set generally extending in the longitudinal direction, and a ventilation inlet communicating with the generator installation room. A passage and a ventilation outlet passage are formed in the upper passage space, a first opening for a ventilation outlet is provided at the front end of the partition, and a first portion of the ventilation outlet passage communicating with the first opening is formed in the upper passage space. a second opening communicating with the first passage portion is formed in the front end of at least one of the side walls, a duct is provided outside in the left-right direction of the side wall in which the second opening is provided, A second passage portion extending rearward from the second opening is provided inside, a fan for sending ventilation air to the rear is provided in the second passage portion, and a rear end of the second passage portion is communicated with a ventilation outlet. A package for a gas turbine power generation device characterized by: