JPH0435548Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a soundproof gas turbine power generation unit, and particularly to its heat insulation and sound insulation and heat dissipation structure.

[Prior Art] A gas turbine power generation device is well known, which uses a gas turbine engine to obtain constant rotational operation, and uses this rotation to drive a generator to perform a desired power generation operation, and is suitable for use in areas where commercial power is not available. In addition, the value of its use as an emergency power source during power outages in hospitals and the like has increased significantly in recent years.

Normally, a power generation device using a gas turbine engine can be configured to be smaller and lighter than a power generation device using a diesel engine, but on the other hand, the noise generated by the operation of the engine is high frequency and loud. There was a problem that the information could leak outside and cause harm. Especially when used in facilities such as hospitals, it is necessary to suppress this noise to a minimum.

For this reason, in conventional devices, the housing housing the gas turbine engine is lined with a sound absorbing material to prevent noise from leaking outside.

FIG. 3 shows a longitudinal sectional view of a conventional soundproof gas turbine power generation unit. In the figure, a gas turbine engine 1 to which a generator 9 is directly connected and an intake pipe 2a and an exhaust pipe 2b are connected is operated together with the generator 9 by a controller 3. The output of the generator 9 is converted into alternating current by an inverter 4. Further, an engine oil cooler 5 is provided to cool the engine oil, and cooling air is forcedly circulated by an oil cooler blower 5a.
Heat generated within the unit is dissipated to the outside by a heat exhaust blower 6, and each of the above-mentioned elements is housed in a housing 8, the entire surface of which is lined with sound absorbing material 7.

With this configuration, the operating noise of the gas turbine engine 1 is shielded by the sound absorbing material 7, and leakage to the outside is prevented.

[Problems to be solved by the invention] In the conventional device described above, as shown in the figure,
The entire housing 8 is lined with a sound absorbing material 7, and as a result, due to the heat insulating effect of the sound absorbing material 7, heat generated from the gas turbine engine 1 is trapped inside the housing 8 without escaping to the outside. However, there was a problem in that the temperature inside the housing 8 was significantly increased.

In the conventional device, the gas turbine engine 1 serving as the heat source and other components such as the controller 3, the rectifier, and the inverter 4 are arranged in a mixed manner, and these devices with low heat resistance are placed inside the housing. There was a problem in that it was easily destroyed or its properties deteriorated due to the intense heat.

The sound-absorbing material lining 7 of the housing 8 has a significant adverse effect on the cooling performance of the oil cooler 5 used as a cooler for the gas turbine engine 1.
This had the disadvantage of significantly reducing its cooling efficiency.

Of course, in the conventional device, the housing 8
As mentioned above, the exhaust heat blower 6 and the oil cooler blower 5a are provided to dissipate the heat inside the engine, but as mentioned above, in the conventional equipment, the gas turbine engine and other components are arranged in a mixed manner. However, the dissipation of internal heat and intake of cooling air by the blower simultaneously causes the problem of leaking noise generated from the gas turbine engine to the outside. Conventionally, the mutually contradictory issues of heat dissipation and soundproofing have been solved. The problem was that I couldn't do it.

Purpose of the invention This invention was made to solve these problems, and its purpose is to prevent damage to controllers and inverters caused by temperature rise inside the unit due to radiant heat from the gas turbine engine, and leakage of operating noise to the outside. An object of the present invention is to provide a soundproof gas turbine power generation unit that can efficiently prevent the above.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a gas turbine engine to which an intake pipe and an exhaust pipe are connected, a generator directly connected to the gas turbine engine, and a generator connected to the gas turbine engine. A rectifier that rectifies the output of the generator, an inverter that converts the output of the rectifier into alternating current, a controller that controls the gas turbine engine and the inverter, an engine oil cooler, and a housing that houses each of these elements. A soundproof gas turbine power generation unit in which at least a part of the inside of the housing is provided with a heat-insulating and sound-insulating material, wherein the housing is divided into two chambers by an intermediate partition wall, and the first chamber contains the gas which is a source of thermal noise. A turbine engine and a generator are housed in a second chamber, and the controller, an inverter, a rectifier, and an engine oil cooler having low heat resistance are housed in the second chamber, and the turbine engine and the generator are housed in the inner surface of the first chamber and in the first chamber. the first gas turbine engine intake pipe is coated with at least a gas turbine engine heat insulating and sound absorbing material;
A sub-intake hole was provided in the tube wall in the room for sucking air from the first room, and a vent hole was provided through the intermediate partition wall for letting air from the second room flow into the first room. It is characterized by

[Embodiment] A preferred embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows a front vertical sectional view of a gas turbine power generating unit according to the present invention, and FIG. 2 shows a side sectional view of the first chamber of the gas turbine power generating unit according to the present invention. In the figure, a housing 10 that accommodates each element of a gas turbine power generator includes a frame 12, and an intermediate partition wall 14 inside the frame 12.
It is divided into two parts, a first chamber 100 and a second chamber 200. A gas turbine engine 16 is arranged in the first chamber 100. A generator 18 is directly connected to the front of the gas turbine engine 16, an intake pipe 20 is connected to the upper part of the generator 18, and an exhaust pipe 22 (FIG. 2) is connected to the back of the engine for discharging combustion exhaust gas and heat to the outside. It is connected.

Unlike the above-mentioned conventional device in which the entire surface of the housing is lined with sound absorbing material, the first chamber 1
00 and the gas turbine engine 16
And the exhaust pipe 22 is covered with a heat insulating and sound absorbing material 24.

Therefore, the gas turbine engine 16, the generator 18, and the exhaust pipe 22, which are sources of thermal noise, are protected from the heat-insulating and sound-insulating material 24 by the controller 32a, which has poor heat resistance.
32b, 32c, rectifier and inverter 34, and engine oil cooler 38.

As a result, the members disposed in the second chamber 200 are not adversely affected by the heat from the gas turbine engine 16 in the first chamber 100, and are always kept in a state of good ventilation and heat dissipation due to the ventilation gear gallery 38. Because it is maintained at a high temperature, its characteristics do not deteriorate and it can fully demonstrate its original function.

Furthermore, the present invention is characterized in that a sub-intake hole is provided in the wall of the intake pipe 20 and that the first chamber 1
Intermediate partition wall 1 separating 00 and the second room 200
The reason is that an air hole is provided that passes through the hole.

In this embodiment, a sub-intake hole 26 is provided near the upper intake hole 21 of the intake pipe 20, and the housing 10
A ventilation hole 28 is inserted through the intermediate partition wall 14 near the bottom of the intermediate partition wall 14 .

By providing these auxiliary intake holes 26 and ventilation holes 28, when air is taken in from the intake pipe 20, air in the first chamber 100 that is heated by radiant heat from the engine 10, etc., is simultaneously discharged from the auxiliary intake holes 26. It is drawn into the intake pipe 20.

As a result, the inside of the first chamber 100 becomes negative pressure, and unheated air inside the second chamber 200 flows through the ventilation hole 28 provided in the intermediate partition wall 14 .

For example, when the sub-intake hole 26 and the ventilation hole 28 are not provided, the inner surface of the first chamber 100 is covered with the heat-insulating material 24, and the interior of the chamber is in a sealed state, so the gas turbine engine 16
The radiant heat is transmitted through the heat insulating material around the engine and released, and the temperature inside the first chamber 100 becomes extremely high, which adversely affects the power generator 18 due to the heat.

However, the temperature inside the first chamber 100 can be lowered by providing the sub-intake holes 26 and the air holes 28 and discharging high-temperature air and introducing low-temperature air.

In this embodiment, the auxiliary intake hole 26 is provided so that about 4% of the air taken in from the intake pipe 28 and sent to the gas turbine engine 16 is taken in from the auxiliary intake hole 26. temperature is 180
℃ to 110℃, and the temperature at the lower part of the first chamber 100 decreases from 140℃ to 80℃.

In this way, the controller 3 in the second chamber 200
2. The rectifier and inverter 34 can operate without being adversely affected by radiant heat from the gas turbine engine 16, and the cooling air used for the engine oil cooler 36 also has unheated external air suitable for cooling. The ventilation gear 38
It can be taken in at any time via the , which greatly improves cooling efficiency. These heat dissipation functions do not conflict with each other, and at the same time, leakage of engine operating noise to the outside can be effectively prevented.

[Effects of the invention] As explained above, according to the soundproof gas turbine power generation unit according to the invention, the controller, rectifier, and inverter, which have poor heat resistance, are thermally isolated from the gas turbine engine and are prevented from being damaged due to temperature rise. This also improves the cooling performance of the engine oil cooler.

Moreover, the effect of discharging the first room air and sucking the second room air into the first room through the sub-intake hole and the ventilation hole makes it possible to effectively lower the temperature of the first room when the gas turbine engine is running. This makes it possible to avoid adverse effects of heat on the generator directly connected to the gas turbine engine.

[Brief explanation of the drawing]

Fig. 1 is a front longitudinal cross-sectional view of a soundproof gas turbine power generating unit according to the present invention, Fig. 2 is a side cross-sectional view of the first chamber according to the present invention, and Fig. 3 is a front cross-sectional view of a conventional gas turbine power generating unit. It is. 10...Housing, 14...Intermediate partition wall, 1
6... Gas turbine engine, 18... Generator,
20...Intake pipe, 22...Exhaust pipe, 24...Soundproofing insulation material, 26...Sub-intake hole, 28...Vent hole, 3
2...controller, 34...rectifier and inverter,
36...Engine oil cooler.

Claims (1)

[Claims for Utility Model Registration] A gas turbine engine to which an intake pipe and an exhaust pipe are connected, a generator directly connected to the gas turbine engine, and a rectifier that rectifies the output of the generator.
an inverter that converts the output of the rectifier into alternating current;
A soundproof gas turbine power generator comprising: a controller that controls the gas turbine engine and the inverter; an engine oil cooler; and a housing that houses these elements, and at least a portion of the inside of the housing is provided with heat-insulating and sound-insulating material. In the unit, the housing is divided into two chambers by an intermediate partition wall, the first chamber houses the gas turbine engine and generator, which are sources of thermal noise, and the second chamber houses the controller, inverter, and the like, which have low heat resistance. A rectifier and an engine oil cooler are respectively housed and arranged, and the intake pipe of the gas turbine engine is covered with at least a gas turbine engine heat-insulating and sound-absorbing material disposed on the inner surface of the first chamber and in the first chamber. Said first
A sub-intake hole was provided in the tube wall in the room for sucking air from the first room, and a vent hole was provided through the intermediate partition wall for letting air from the second room flow into the first room. A soundproof gas turbine power generation unit characterized by: