JPH0435551Y2 - - 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 a constant rotational motion, 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. 4 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 operationally controlled 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.

Also, a giant transistor (hereinafter referred to as GTR) is used as a power semiconductor that constitutes the inverter 4 that converts the output of the generator 9 into alternating current.
Since the temperature of the inverter increases during operation, there is a risk that thermal damage may occur due to this temperature increase.

For this reason, in the conventional device, an oil cooler (not shown) for the inverter was provided in addition to the oil cooler for the gas turbine engine.

[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.

In addition, in order to prevent thermal damage due to temperature rise of power semiconductors, which are the main components of the inverter,
The oil cooler installed in the power generation unit is
Since piping and waste heat blowers are required, the volume and weight are large (approximately 10 to 15 kg).
This prevents the entire unit from becoming smaller and lighter. Furthermore, there is a problem in that battery power consumption also increases due to the power required for the oil pump and the like.

Purpose of the invention This invention was made to solve these problems, and it is possible to prevent heat deterioration of the controller etc. due to radiant heat from the gas turbine engine, efficiently prevent leakage of operating noise to the outside, and to improve the efficiency of the unit. An object of the present invention is to provide a soundproof gas turbine power generation unit that is small and lightweight.

[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 gas turbine engine to which an intake pipe and an exhaust pipe are connected. 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 the 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. At least the gas turbine engine is covered with a heat insulating and sound absorbing material, and the intake pipe extends from the first chamber through the intermediate partition wall into the second chamber, and a terminal end is provided on the housing wall on the second chamber side. Connected to the intake port, between the intermediate partition wall of the intake pipe and the intake port, there is a power semiconductor, which is a main component of the inverter, and a power semiconductor fixed to the semiconductor for dissipating heat from the power semiconductor. The inverter cooling cylinder part is formed by enclosing a heat dissipating member and having an inner surface covered with a sound-insulating material, and the power semiconductors are cooled by the low-temperature intake air of the intake pipe.

[Function] According to the above configuration, the heat insulation and sound insulation material covering the gas turbine engine reduces radiant heat and operational noise from the engine, and the sound insulation material covering the inner surface of the first chamber reduces the heat and sound insulation material around the engine. Absorbs and insulates transmitted noise and radiant heat.
The intermediate partition wall blocks heat transfer from the first chamber to the second chamber.

Furthermore, the present invention provides an inverter cooling tube section on the second chamber side portion of the intake pipe that extends to the intake port provided on the housing wall of the second chamber, so that low-temperature intake air from the intake port can be used to cool the inverter's GTR.
This eliminates the need to install an inverter oil cooler and its related components, making it possible to reduce the size and weight of the entire power generation unit.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described based on FIGS. 1, 2, and 3.

FIG. 1 shows a front vertical sectional view of a gas turbine power generation unit according to the present invention, and FIG. 2 shows a side sectional view of the second chamber of the gas turbine power generation unit according to the present invention. In the figure, a housing 10 that houses each element of a gas turbine power generator includes a frame 12, and the interior thereof is divided into a first chamber 100 and a second chamber 200 by an intermediate partition wall 14. A gas turbine engine 16 is arranged in the first chamber 100. A generator 18 is directly connected to the front side 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 is connected to the back side of the generator 18 for discharging combustion exhaust gas and heat to the outside.
are connected to each other.

Unlike the conventional device described above, 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
The outer circumferential surface of
Covered with 4.

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 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 the ventilation gear assembly 40 always provides good ventilation and heat dissipation. Because it is maintained in this condition, its characteristics do not deteriorate and it can fully demonstrate its original function.

Furthermore, a characteristic feature of the present invention is that the intake pipe 20 extends from the first chamber 100 side through the intermediate partition wall 14 to the intake port 42 provided in the housing wall of the second chamber 200 and communicating with the outside. , and intake pipe 2
The inverter cooling cylinder section 4 is located on the side of the second chamber 200 of 0.
4 was established.

In this embodiment, the intake pipe 20, one end of which is attached to the gas turbine engine 16, passes through the sound-insulating material 24 and the intermediate partition wall 14, and is connected to the second chamber 200.
It is expanding inward.

The intake flow path between the intermediate partition wall 14 and the intake port 42 opened in the front housing wall 10a of the second chamber (see FIG. 2) has a cross-sectional area larger than that of the intake pipe 20, and An inverter cooling cylinder section 44 whose inner surface is covered with a soundproof and heat insulating material 46 is provided.

Inside this inverter cooling cylinder section 44, a rectifier 3 is provided.
A cooling block 52 is provided with a GTR 48, which is a main component of the inverter that converts the output of 4 into alternating current, and a cooling block 52 that is fixed in contact with the GTR 48 and is provided with a plurality of cooling fins 50 that extend parallel to the intake flow direction in the intake flow path. ing.

Figure 3 shows the inverter cooling cylinder section 4 shown in Figure 2.
4, it can be seen that a plurality of cooling fins 50 are formed in the cooling block 52 to form a cooling fin row.

The function of this inverter cooling cylinder section 44 is to cool down the GTR 48 whose temperature has increased due to the operation of the inverter, and first, the heat from the GTR 48 is removed.
The heat is transmitted to the cooling block 52 that is fixed in contact with the GTR 48, and further transmitted to the cooling fins 50, where the heat is radiated.

Since the cooling fins 50 are cooled by low-temperature air drawn from the outside through the intake ports 42, heat can be dissipated more effectively.

Furthermore, in this embodiment, the cooling fins 50 are formed to extend parallel to the intake air flow direction, and are formed as a cooling fin row including a plurality of cooling fins, so that the contact area with low-temperature intake air is reduced. Heat dissipation efficiency is greatly improved.

Furthermore, the low-temperature intake air is also in direct contact with the GTR48, and it goes without saying that it also directly cools the GTR48.

Due to the action of this inverter laser cooling cylinder section 44, temperature rise during inverter operation is caused.
It is possible to prevent thermal damage to the GTR48 by efficiently cooling it with low-temperature intake air.

Therefore, compared to conventional devices, there is no need for an oil cooler for the inverter, a large amount of insulating oil, an oil pump, piping, a waste heat blower, etc., and furthermore, there is no need for the inverter box itself.

Furthermore, the soundproof and heat insulating material 46 coated inside the inverter cooling cylinder section 44 can also reduce intake noise.

[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.

Furthermore, the inverter cooling cylinder section provided in the intake pipe extending to the housing wall on the second chamber side can effectively cool the GTR, which is a main component of the inverter, and prevent its thermal damage.

This eliminates the need for an inverter oil cooler and its related components, and simplifies the internal structure of the soundproof gas turbine power generation unit.

[Brief explanation of the drawing]

Fig. 1 is a front longitudinal cross-sectional view of a soundproof gas turbine power generation unit according to the present invention, Fig. 2 is a side cross-sectional view of the second chamber according to the present invention, Fig. 3 is a partial cross-sectional view of the embodiment, and Fig. 4 1 is a front sectional view of a conventional gas turbine power generation unit. 10...Housing, 14...Intermediate partition wall, 1
6... Gas turbine engine, 18... Generator,
20...Intake pipe, 22...Exhaust pipe, 24, 46...
...Soundproofing insulation material, 32...Controller, 34...Rectifier, 38...Engine oil cooler, 42...Intake port, 44...Inverter cooling cylinder section, 48...
GTR, 50...cooling fin, 52...cooling block.

Claims (1)

[Claims for Utility Model Registration] (1) A gas turbine engine to which an intake pipe and an exhaust pipe are connected, a generator directly connected to the gas turbine engine, a rectifier for rectifying the output of the generator, and the rectifier an inverter that converts the output of the engine into alternating current, a controller that controls the gas turbine engine and the inverter, an engine oil cooler, and a housing that houses 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 the 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. At least the gas turbine engine is covered with a heat insulating and sound absorbing material, and the intake pipe extends from the first chamber through the intermediate partition wall into the second chamber, and a terminal end is provided on the housing wall on the second chamber side. Connected to the intake port, between the intermediate partition wall of the intake pipe and the intake port, there is a power semiconductor that is a main component of the inverter, and a power semiconductor that is fixed to the semiconductor in order to radiate heat from the power semiconductor. A soundproof gas turbine power generation unit characterized in that an inverter cooling cylinder part is formed, which includes a heat dissipating member and whose inner surface is covered with a soundproof heat insulating material, and the power semiconductors are cooled by the low temperature intake air of the intake pipe. . (2) Utility model registration In the soundproof gas turbine power generation unit according to claim 1, the heat dissipation member includes a plurality of heat dissipating members fixed in contact with the power semiconductor and extending in a direction parallel to the intake air flow in the intake pipe. A soundproof gas turbine power generation unit characterized by being formed as a cooling fin row consisting of cooling fins.