JPH0326277Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a gas turbine power generation device in which a gas turbine engine and a generator are housed in a substantially box-shaped soundproof bonnet.

(Prior Art and its Problems) In this type of gas turbine power generator, intake air for combustion of the gas turbine engine and ventilation for cooling the gas turbine engine, generator, etc. are sucked into the inside of the soundproof bonnet.

However, it is necessary to house a control equipment box and the like within the soundproof bonnet, and it is difficult to reduce the size of the soundproof bonnet while reducing the intake noise of the gas turbine engine.

(Purpose of the invention) An object of the invention is to provide a gas turbine power generation device that can reduce the intake noise of a gas turbine engine and also reduce the size of the soundproof bonnet.

(Structure of the invention) (1) Technical means The present invention is a gas turbine power generation system in which a gas turbine engine and a generator are housed in a roughly box-shaped soundproof bonnet. A partition is provided to form an intake inlet and connect the intake inlet to the intake port of the gas turbine engine, and the intake air flowing from the intake inlet in a direction that intersects with the central axis of the gas turbine engine is connected to the central axis of the gas turbine engine. A horizontal splitter is provided near the intake inlet in the bulkhead, a control equipment box is provided above the generator in the soundproof bonnet, and a ventilation inlet is formed on the side of the soundproof bonnet facing the control equipment box. A downward splitter is provided to guide the ventilation flowing in from the ventilation inlet downward, and a partition plate is formed continuously on the gas turbine engine side end face of the control equipment box to partition the space inside the soundproof bonnet, and the air intake of the partition plate is A gas turbine power generating device characterized by having a ventilation hole formed at a position away from the inlet, and sucking the intake air while changing its direction with a horizontal splitter to reduce intake noise and prevent the intake air and ventilation from mixing. be.

(2) Effect By changing the direction of the intake air flowing in from the intake inlet using the horizontal splitter, intake noise of the gas turbine engine is reduced.

The control equipment box is placed facing the ventilation inlet to effectively cool the control equipment box and the generator, and the partition plate guides the flow of ventilation to prevent intake air and ventilation from mixing.

(Embodiment) In FIG. 1 showing a gas turbine power generating apparatus employing the present invention, numeral 10 is a package housing a gas turbine engine, a generator, etc. therein. package 1
Exhaust silencer 1 adjacent to soundproof bonnet 12 of
4 is provided. Doors 16, 18 are provided on the front side (operation side) of the soundproof bonnet 12, and doors 20, 22, etc. shown by broken lines are provided on the back side (anti-control side) of the soundproof bonnet 12. door 20,
Above 22, there is an intake inlet 33, which will be described in detail later.
A ventilation inlet 40 is formed.

In FIG. 2, which shows the - cross section of FIG.
are arranged, and a generator 31 is arranged at the right end. 32 is a coupling. Gas turbine engine 30 on the non-control side side of the soundproof bonnet 12
An intake inlet 33 is open nearby. A partition wall 35 is provided above the gas turbine engine 30 in the soundproof bonnet 12 to connect the intake port 33 and the air intake port 34 of the gas turbine engine 30.
The inside of 5 serves as an intake passage 36.

Near the intake inlet 33 of the intake passage 36, there is an arrow A.
A slit-shaped horizontal splitter 37 is provided to change the direction of the intake air flowing in from the intake inlet 33 in the direction shown by the arrow B. This horizontal splitter 37 changes the inflow direction of intake air to the side, thereby reducing intake noise. Further, the horizontal splitter 37 is made of a sound absorbing material 38 and has a high sound absorbing effect.

Note that the sound absorbing material 38 is also provided on the inner surface of the partition wall 35 and at key points of the soundproof bonnet 12.

A ventilation inlet 40 is opened at the upper right end of the side surface opposite to the control side of the soundproof bonnet 12.
A downward splitter 41 is provided in which the ventilation flowing in the direction of arrow C flows downward. A control equipment box 42 is arranged above the generator 31 facing the ventilation inlet 40. A partition plate 44 is provided on the end face of the control equipment box 42 facing the generator 31, and a ventilation hole 45 is opened in a portion of the partition plate 44 remote from the intake inlet 33.

The ventilation flowing into the soundproof bonnet 12 from the ventilation inlet 40 cools the control equipment box 42 and the generator 31, and then flows into the gas turbine engine 30 from the ventilation hole 45, etc.
and cools the gas turbine engine 30. On the other hand, the exhaust gas of the gas turbine engine 30 is routed from the exhaust duct 50 at the left end to the ejector duct 51.
The ventilation flows into the exhaust muffler 14 through the exhaust muffler 14, but with negative pressure generated by the exhaust gas of the gas turbine engine 30, ventilation is sucked into the ejector duct 51 from the suction port 52 of the ejector 51 along the arrow D, and the exhaust muffler 14 Exhaust air and ventilation are discharged together. In Fig. 3 showing the − cross section of Fig. 2,
The partition wall 35 is located above the generator 31, and the control equipment box 42 is provided above the generator 31. A ventilation hole 45a is formed below the partition plate 44. Therefore, the ventilation flowing in from the ventilation inlet 40 flows downward in the direction of arrow E through the downward splitter 41, cools the control equipment box 42 and the generator 31, and then flows through the ventilation holes 45, 45a of the partition plate 44 and the generator ventilation. It flows from the port 45b around the gas turbine engine 30, and as described above, flows from the intake port 52 to the exhaust muffler 1.
Discharge to 4.

In the above embodiment, as shown in FIG.
By changing the direction laterally along the direction of arrow B, intake noise leaking to the outside from the intake inlet 33 is reduced. Furthermore, the sound absorbing material 38 on the surface of the horizontal splitter 37 suppresses intake noise.

The ventilation flowing in from the ventilation inlet 40 is separated from the intake air flowing inside the partition wall 35 into the control equipment box 42 inside the soundproof bonnet 12, the generator 31, and the gas turbine engine 3.
The 0 etc. are discharged from the suction port 52 of the ejector duct 51 while being cooled.

(Another Embodiment) (1) The present invention is not limited to the embodiment shown in FIG. 1, but as shown in FIG.
The height H of the ceiling 65 may be reduced by supplying intake air and ventilation together to the package 10 through the duct 62, and discharging the ventilation and exhaust air from the passage 63 to the exhaust silencer 64.

In the case of FIG. 4, as shown in FIG. 4a, a single exhaust system is used in which only the exhaust gas is discharged from the passage 63.

(Effect of the invention) As explained above, in the gas turbine power generating apparatus according to the invention, the horizontal splitter 37 is provided near the intake inlet 33 to guide the intake air to the intake port 34. It is possible to change the direction of the intake air flowing in from the engine, reducing the intake noise of the gas turbine engine.

Since the ventilation inlet 40 is placed above the generator 31 on the non-control side side of the soundproof bonnet 12 and the partition plate 44 is provided, the control equipment box is placed facing the ventilation inlet and the gas turbine engine 30, generator 31 , while effectively cooling the control equipment box, the intake air and ventilation can flow so as not to mix.

Since the partition wall 35 is disposed above the gas turbine engine 30 and the control equipment box 42 is disposed above the generator 31, the internal space of the soundproof bonnet 12 can be used effectively, and the soundproof bonnet 12 can be made smaller. .

[Brief explanation of drawings]

Fig. 1 is a front view of a gas turbine power generation device employing the present invention, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 is a cross-sectional view of Fig. 2, and Fig. 4 shows another embodiment. The structural diagram shown in FIG. 4a is a sectional view taken along the line a-a in FIG. 4. 12...Soundproof bonnet, 14...Exhaust silencer, 3
0... Gas turbine engine, 31... Generator, 33... Intake inlet, 35... Partition wall, 37... Lateral splitter,
40...package, 41...downward splitter, 4
4...Dividing board, 51...Ejecta duct.

Claims (1)

[Scope of utility model registration request] In a gas turbine power generation system in which a gas turbine engine and a generator are housed in a roughly box-shaped soundproof bonnet, an intake inlet is formed at the upper side of the soundproof bonnet near the gas turbine engine, and the intake inlet and the intake air of the gas turbine engine are connected to each other. A lateral splitter is installed to guide the intake air flowing from the intake inlet in a direction perpendicular to the central axis of the gas turbine engine in a direction along the central axis of the gas turbine engine. A control equipment box is provided near the entrance, and a control equipment box is provided above the generator in the soundproof bonnet.
A ventilation inlet is formed on the side of the soundproof bonnet facing the control equipment box, and a downward splitter is provided to guide the ventilation flowing in from the ventilation inlet downward. Forming a partition board that partitions the space of
A gas characterized in that a ventilation hole is formed in a position away from the intake inlet of the partition plate, and the intake air is inhaled while changing its direction with a horizontal splitter to reduce intake noise and prevent the intake air and ventilation from mixing. Turbine generator.