JP2003322030A - Gas turbine device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas turbine device capable of reducing cost by decreasing the number of parts in simple structure, preventing leak of high-temperature gas, and restricting heat loss. <P>SOLUTION: In a casing 17, an air compressor 11, a circular combustor 12, and a turbine 13 are coaxially disposed. Inside a case 19, a regenerator 15 to heat-exchange between compression air fed from the air compressor 11 to the circular combustor 12 and exhaust gas emitted from the turbine 13 is contained. The case 19 is coaxially provided with an outer cylinder 20, a middle cylinder 21, and an inner cylinder 22. The case 19 is connected to the casing 17 in such a way as to form three passages of a first passage connecting the air compressor 11 to the regenerator 15, a second passage connecting the regenerator 15 to the circular combustor 12, and a third passage connecting the turbine 13 to the regenerator. Flow of exhaust gas in the regenerator 15 is set to be roughly perpendicular to a rotation shaft 16 of the turbine 13. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine device, and more particularly to a gas turbine device used in a micro gas turbine power generator or the like.

[0002]

2. Description of the Related Art Conventionally, an air compressor for compressing air, a combustor for burning compressed air compressed by the air compressor, a turbine for receiving combustion gas generated in the combustor, and a turbine, A gas turbine device including a regenerator that heats compressed air supplied to a combustor by utilizing heat of exhaust gas that is discharged is known.

In such a gas turbine apparatus, the air compressed by the air compressor is sent to the low temperature side flow path inlet of the regenerator through a pipe connecting the air compressor and the regenerator. While passing through the regenerator, the compressed air is heated by exchanging heat with the exhaust gas discharged from the turbine.
The compressed air heated in the regenerator is supplied to the combustor through a pipe connecting the regenerator and the combustor, and mixed with the fuel gas. The mixture of compressed air and fuel gas is combusted inside the combustor, and the turbine is rotated at high speed by the combustion gas generated by the combustion of the mixture. The exhaust gas discharged from the turbine is sent to the high temperature side passage inlet of the regenerator through a pipe connecting the turbine and the regenerator. The exhaust gas flowing through the high temperature side passage in the regenerator heats the compressed air flowing through the low temperature side passage in the regenerator, and is then exhausted.

This type of gas turbine device is applied to, for example, a micro gas turbine power generator. This micro gas turbine power generator is configured to operate at a high speed of, for example, about 100,000 revolutions per minute by directly connecting a micro-miniature generator to a micro-miniature turbine and supplying combustion gas to the turbine. According to such a gas turbine power generator,
Since it is possible to supply generated power of, for example, about 50 to 100 kW even though it is a very small facility, it has recently attracted particular attention as one of the locally distributed power sources.

[0005]

However, in the conventional gas turbine apparatus, the pipe connecting the air compressor and the regenerator, the pipe connecting the regenerator and the combustor,
Since the pipes that connect the turbine and the regenerator are separately provided, the number of parts increases, the cost increases, and the pipes are required to be routed, and the structure is complicated.

Further, in order to suppress the heat loss due to heat dissipation and to seal the fluid flowing inside the pipes, it is necessary to provide a heat insulating material and a sealing structure in each pipe, which further increases the number of parts and the cost. Is invited. In addition, it is conceivable that the degree of thermal deformation will differ due to the temperature difference of the air passing through the inside of the pipe, and hot air and exhaust gas may leak out from the pipe connection where strength is weak. To prevent this, a complicated structure was required for the pipe connection.

The present invention has been made in view of the above problems of the prior art, and has a simple structure in which the number of parts can be reduced and the cost can be reduced, and leakage of high temperature gas can be prevented. An object of the present invention is to provide a gas turbine device capable of suppressing heat loss.

[0008]

In order to solve the problems in the prior art, the first aspect of the present invention is
Inside the casing, an air compressor that compresses air, a combustor that burns the compressed air compressed by the air compressor, and a turbine that rotates by receiving the combustion gas generated in the combustor are arranged, and a casing Inside the body, a regenerator that exchanges heat between the compressed air supplied from the air compressor to the combustor and the exhaust gas discharged from the turbine is housed, and the casing is an outer cylinder. An intermediate cylinder located on the inner peripheral side of the outer cylinder and an inner cylinder located on the inner peripheral side of the intermediate cylinder are coaxially provided, and are formed by the outer cylinder, the intermediate cylinder, and the inner cylinder. The three flow paths are a first flow path connecting the air compressor and the regenerator, a second flow path connecting the regenerator and the combustor, the turbine and the regenerator. The casing to the casing so as to form a third flow path connecting Continued to a gas turbine apparatus which is characterized in that a substantially vertical flow of the exhaust gas with respect to the rotation axis of the exhaust direction substantially the same direction as or the turbine of the turbine in the regenerator.

According to a second aspect of the present invention, an air compressor for compressing air, a combustor for burning compressed air compressed by the air compressor, and a combustion generated in the combustor are provided inside a casing. A regenerator in which a turbine that receives gas and rotates is disposed, and heat is exchanged between the compressed air supplied from the air compressor to the combustor and the exhaust gas discharged from the turbine inside the casing. And the housing includes an outer cylinder, an intermediate cylinder located on the inner peripheral side of the outer cylinder,
An inner cylinder located on the inner peripheral side of the intermediate cylinder is coaxially provided, and three flow paths formed by the outer cylinder, the intermediate cylinder, and the inner cylinder form the air compressor and the regenerator. The casing so as to be a first flow path connecting the regenerator, a second flow path connecting the regenerator and the combustor, and a third flow path connecting the turbine and the regenerator. Is connected to the casing, and an exhaust port for discharging the exhaust gas to the outside is arranged on the exhaust direction side of the turbine with respect to the third flow path.

According to the present invention, since the flow path can be formed between the casing containing the regenerator and the casing by the triple pipe structure, it is not necessary to provide a plurality of pipes and the structure is simple. Can be Therefore, the number of parts can be reduced and the cost can be reduced. Moreover, since the number of heat insulating materials and flanges attached to the pipes can be reduced, the number of parts can be reduced and the cost can be reduced. Further, the coaxial triple tube structure can absorb the thermal expansion due to the high temperature gas.

For example, when the exhaust gas discharged from the turbine is turned 180 degrees and introduced into the regenerator, such turning of the exhaust gas causes a great ventilation loss resistance, and as a result, the back pressure of the turbine rises. As a result, the output efficiency of the gas turbine becomes low. According to the present invention, the flow of the exhaust gas in the regenerator is substantially the same as the exhaust direction of the turbine or substantially perpendicular to the rotation axis of the turbine, or
By arranging the exhaust port that discharges the exhaust gas to the outside on the exhaust direction side of the turbine with respect to the third flow path, the 180-degree turn of the exhaust gas as described above is avoided, and the flow path through which the exhaust gas flows is simple. Can be Therefore, the ventilation loss of the exhaust gas is reduced, the back pressure of the turbine can be reduced, and the output efficiency of the gas turbine can be increased. here,
The “exhaust direction of the turbine” means the direction in which exhaust gas is discharged from the turbine, and does not include the opposite direction. Also,
The phrase “arranged on the exhaust direction side of the turbine with respect to the third flow path” means that it is on the exhaust direction side of the turbine with respect to the third flow path in the rotational axis direction of the turbine, and is defined as a direction perpendicular to the rotational axis of the turbine. The positional relationship does not matter.

[0012] A preferred aspect of the present invention is characterized in that the exhaust port discharges the exhaust gas in a direction substantially the same as the flow direction of the exhaust gas in the regenerator. With such a configuration, the exhaust gas flowing through the inside of the regenerator is discharged in the same direction, so that the ventilation loss of the exhaust gas can be further reduced and the output efficiency of the gas turbine can be further increased.

In a preferred aspect of the present invention, the flow path formed between the outer cylinder and the intermediate cylinder is the first flow path,
The flow path formed between the intermediate cylinder and the inner cylinder is the second flow path, and the flow path formed inside the inner cylinder is the third flow path.

The pressure in the first flow path connecting the air compressor and the regenerator, the pressure in the second flow path connecting the regenerator and the combustor,
Comparing the pressures of the third flow path connecting the turbine and the regenerator, the pressure of the first flow path is the highest, the pressure of the second flow path is the highest, and the pressure of the third flow path is the lowest. Therefore, if the above-mentioned configuration is adopted, the pressure in the outer peripheral side flow passage is higher than that in the inner peripheral side passage, so if the outermost peripheral side passage is sealed enough, It is possible to prevent air or exhaust gas flowing through the side flow path from leaking to the outer peripheral side. Therefore,
The seal structure of the entire device can be simplified.

The temperature of the air flowing through the first flow path, the second temperature
Comparing the temperature of the air flowing through the flow passage and the temperature of the exhaust gas flowing through the third flow passage, the temperature of the air flowing through the first flow passage is the lowest, and the temperature of the air flowing through the second flow passage is next low. The temperature of the exhaust gas flowing through the flow path becomes highest. Therefore, with the above-described configuration, it is possible to arrange air or exhaust gas having a higher temperature on the inner peripheral side having a smaller surface area and to make it difficult to radiate heat to the outside, and thus suppress heat loss due to heat radiation. Is possible.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a gas turbine power generation system using a gas turbine device according to the present invention will be described in detail below with reference to FIGS. 1 to 6. The gas turbine power generation system described below also includes a micro gas turbine power generation device that uses a micro turbine to generate power.

FIG. 1 is a system diagram schematically showing the overall configuration of a gas turbine power generation system according to the first embodiment of the present invention. As shown in FIG. 1, a gas turbine power generation system includes a gas turbine device 1 that generates power by burning a mixture of compressed air and fuel gas, and a natural gas or liquefied petroleum gas (LPG) in the gas turbine device 1. And a hot water boiler 3 that recovers exhaust heat from the exhaust gas discharged from the gas turbine apparatus 1.

FIG. 2 is a sectional view schematically showing a part of the gas turbine system 1 of FIG. As shown in FIGS. 1 and 2, a gas turbine device 1 includes an air compressor 11 that compresses air sucked from an air suction port 10, compressed air compressed by the air compressor 11, and the gas compressor device 2. Annular combustor 12 for combusting a mixture with fuel gas from
And a turbine 13 having a plurality of rotating blades that receive combustion gas generated in the annular combustor 12 and rotate at high speed,
Generator 14 for generating power by high-speed rotation of turbine 13
And a regenerator 15 that heats the compressed air supplied to the annular combustor 12 by utilizing the heat of the exhaust gas discharged from the turbine 13. Regenerator 15 in this embodiment
Is a plate fin type heat exchanger in which a low temperature side flow path and a high temperature side flow path are formed by plate fins.

As shown in FIG. 2, the air compressor 11, the annular combustor 12, the turbine 13, and the generator 14 are coaxially arranged inside the casing 17 via a rotary shaft 16, and the turbine 13 The air compressor 11 is rotatably supported in the casing 17. Casing 17
A flow passage 18 through which the compressed air discharged from the air compressor 11 flows is formed in the outer peripheral portion of the annular combustor 1 between the flow passage 18 and the gas discharge port 13a of the turbine 13.
2 are arranged. The generator 1 is provided at one end of the rotary shaft 16.
4 (see FIG. 1) are connected to each other, and the turbine 13, the air compressor 11, and the power generator 14 are integrally rotated via the rotating shaft 16.

A casing 19 containing the regenerator 15 therein is connected to the casing 17 via flanges 17a and 19a. The regenerator 15 exchanges heat between the compressed air supplied from the air compressor 11 to the annular combustor 12 and the exhaust gas discharged from the turbine 13. An outer cylinder 20, an intermediate cylinder 21 located on the inner peripheral side of the outer cylinder 20, and a connection part with the casing 17 in the housing 19.
The inner cylinder 22 located on the inner peripheral side of the intermediate cylinder 21 is arranged coaxially. In addition, the regenerator 15 is provided on the top of the housing 19.
An exhaust port 23 for discharging the exhaust gas emitted from the high temperature side flow path outlet to the outside is formed. The outer flow passage 24, the intermediate flow passage 25, and the inner flow passage 2 are respectively provided between the outer cylinder 20 and the intermediate cylinder 21, between the intermediate cylinder 21 and the inner cylinder 22, and inside the inner cylinder 22.
6 is formed and has a triple tube structure.

Here, the outer flow path 24 is connected to the low temperature side flow path inlet of the regenerator 15, the intermediate flow path 25 is connected to the low temperature side flow path outlet of the regenerator 15, and the inner flow path 26 is. Is connected to the inlet of the high temperature side channel. When the housing 19 is connected to the casing 17, the outer flow passage 24 communicates with the flow passage 18 of the casing 17, the intermediate flow passage 25 is connected to the annular combustor 12, and the inner flow passage 26 is the turbine. Thirteen
It is adapted to communicate with the gas discharge port 13a. Therefore, the outer flow path 24 allows the air compressor 11 and the regenerator 1 to operate.
5, a flow path (first flow path) that connects the regenerator 15 and the annular combustor 12 is configured by the intermediate flow path 25, and an inner flow path is formed. 26 to connect the turbine 13 and the regenerator 15.
Flow path).

With this structure, the air intake port 1
The air sucked from 0 is supplied to the air compressor 11 via the pipe 41 (see FIG. 1) and is compressed by the air compressor 11 to be compressed air. The air compressed by the air compressor 11 is sent to the low temperature side flow path of the regenerator 15 through the flow path 18 in the casing and the outer flow path 24 in the housing 19. The compressed air is heated by the heat of the exhaust gas flowing through the high temperature side passage of the regenerator 15 while passing through the low temperature side passage of the regenerator 15. The compressed air heated in the regenerator 15 is supplied to the annular combustor 12 through the intermediate flow passage 25 in the housing 19, and is mixed with the fuel gas supplied from the gas compression device 2. As a result, a mixture of compressed air and fuel gas is formed inside the annular combustor 12. The mixture of compressed air and fuel gas is combusted inside the annular combustor 12, and combustion of this mixture produces high-temperature, high-pressure combustion gas.

The turbine 13 is rotated at a high speed by receiving the combustion gas generated by the combustion in the annular combustor 12, and the generator 14 and the air compressor 11 are rotationally driven at a high speed as the turbine 13 rotates at a high speed. . The alternating current generated in the generator 14 is adjusted so that it can be used as a commercial alternating current by a not-shown direct current converter, booster, inverter device, etc., and then output to the outside.

The exhaust gas discharged from the turbine 13 is
It is sent to the high temperature side flow path inlet of the regenerator 15 through the inside flow path 26 in the housing 19. The exhaust gas flowing through the high temperature side passage in the regenerator 15 heats the compressed air flowing through the low temperature side passage in the regenerator 15, and then is supplied to the hot water boiler 3 from the exhaust port 23.

As shown in FIG. 1, the hot water boiler 3 is provided with an exhaust heat recovery heat exchanger 30 for exchanging heat between the exhaust gas from the turbine 13 and the hot water, and circulates in the hot water pipe 42. The hot water to be heated is heated by the heat of the exhaust gas from the turbine 13 to recover the exhaust heat. The exhaust gas that has exchanged heat with the hot water in the exhaust heat recovery heat exchanger 30 is exhausted to the outside from the exhaust port 31 of the hot water boiler 3.

Thus, according to the present invention, the regenerator 15
Since the flow paths 24, 25, and 26 can be formed between the housing 19 housing the housing and the casing 17 by a triple pipe structure, it is not necessary to provide a plurality of pipes, and a simple structure can be obtained. it can. Therefore, the number of parts can be reduced and the cost can be reduced. Moreover, since the number of heat insulating materials and flanges attached to the pipes can be reduced, the number of parts can be reduced and the cost can be reduced.

Here, the pressure of the air compressed by the air compressor 11 is about 0.4 MPa, but the compressed air receives some pressure loss due to the fins in the regenerator 15, and the pressure is 0.4 MPa or less. Become. In addition, turbine 1
Exhaust gas pressure from 3 is close to atmospheric pressure and is about 0.10
It becomes about 5 MPa. Thus, the pressure in the first flow path connecting the air compressor 11 and the regenerator 15, the pressure in the second flow path connecting the regenerator 15 and the annular combustor 12, and the turbine 1
Comparing the pressures of the third flow path connecting 3 and the regenerator 15, the pressure of the first flow path is the highest, the pressure of the second flow path is the highest, and the pressure of the third flow path is the lowest. Therefore, as in the present embodiment, the first flow path is formed by the outer flow path 24, the second flow path is formed by the intermediate flow path 25, and the third flow path is formed by the inner flow path 26. For example, since the pressure on the outer peripheral side flow passage is higher than that on the inner peripheral side passage, air or exhaust gas flowing through the inner peripheral side passage can be obtained if only the outermost peripheral side passage is sufficiently sealed. Gas is prevented from leaking to the outer peripheral side. Therefore, the seal structure of the entire device can be simplified.

The temperature of the air compressed by the air compressor 11 is about 200.degree. C., but the compressed air is heated in the regenerator 15 to a temperature of about 550.degree. Further, the temperature of the exhaust gas from the turbine 13 is about 610 ° C. Thus, the temperature of the air flowing through the first flow path, the second
Comparing the temperature of the air flowing through the flow passage and the temperature of the exhaust gas flowing through the third flow passage, the temperature of the air flowing through the first flow passage is the lowest, and the temperature of the air flowing through the second flow passage is next low. The temperature of the air flowing through the flow path is the highest. Therefore, as in the present embodiment, the first flow path is formed by the outer flow path 24,
If the second flow path is formed by the intermediate flow path 25 and the third flow path is formed by the inner flow path 26, air or exhaust gas having a higher temperature is arranged on the inner peripheral side having a small surface area and is outside. Since a structure that does not easily dissipate heat can be provided, heat loss due to heat dissipation can be suppressed.

Further, in this embodiment, as shown in FIG. 2, in the high temperature side passage in the regenerator 15, the exhaust gas flows in a direction substantially perpendicular to the rotating shaft 16 of the turbine 13, and the inner passage 26 Is discharged from the exhaust port 23 arranged on the exhaust direction side of the turbine 13. Here, "Turbine 1
"3 exhaust direction" means the gas discharge port 13a of the turbine 13
Means the direction in which exhaust gas is discharged from. With such a configuration, the flow path of the exhaust gas can be simplified, the exhaust loss of the exhaust gas can be reduced, the back pressure of the turbine can be reduced, and the output efficiency of the gas turbine can be increased.

FIG. 3 is a sectional view schematically showing a part of a gas turbine according to the second embodiment of the present invention. In the present embodiment, the exhaust port 123 is formed at the top of the housing 19, and the exhaust gas is exhausted from this exhaust port 123 in the substantially same direction as the flow direction of the exhaust gas in the regenerator 15. Other configurations are similar to those of the above-described first embodiment. In the present embodiment, the exhaust gas flowing inside the regenerator 15 is discharged in the same direction, so that the ventilation loss of the exhaust gas can be further reduced and the output efficiency of the gas turbine can be further increased. Further, by providing the exhaust port 123 at the top of the casing 19, when the exhaust heat recovery heat exchanger 30 is used in the hot water boiler 3 on the downstream side, the exhaust heat recovery heat exchanger 30 is provided with respect to the casing 19. It can be connected in series and the loss in the connection can be reduced.

FIG. 4 is a sectional view schematically showing a part of a gas turbine according to the third embodiment of the present invention. The regenerator 115 in the present embodiment is the regenerator 15 in the first embodiment placed horizontally. Regenerator 115
In the internal high temperature passage, the exhaust gas flows in the substantially same direction as the exhaust direction of the turbine, and is exhausted from the exhaust port 23 arranged on the exhaust direction side of the turbine 13 with respect to the inner passage 26. Further, the exhaust gas is discharged from the exhaust port 23 in a direction substantially the same as the flow direction of the exhaust gas in the regenerator 115. Other configurations are similar to those of the above-described first embodiment. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

FIG. 5 is a sectional view schematically showing a part of a gas turbine according to the fourth embodiment of the present invention. The present embodiment is different from the third embodiment in that the exhaust port 223 is formed at the top of the housing 19, and other configurations are the same as those in the third embodiment. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

FIG. 6 is a sectional view schematically showing a part of a gas turbine according to the fifth embodiment of the present invention. In the present embodiment, the casing 17 and the casing 19 in the above-described first embodiment are integrated, and the casing 117
Inside the air compressor 11, annular combustor 12, turbine 1
3, a generator 14, and a regenerator 15 are housed. Other configurations are the same as those in the first embodiment. Further, also in the above-described second to fourth embodiments, the casing 17 and the housing 19 may be similarly integrated.

In each of the above-described embodiments, the outer flow path 24 is the first flow path connecting the air compressor 11 and the regenerator 15 (or 115), and the intermediate flow path 25 is the regenerator 15 (or 115). And the annular combustor 12 as a second flow path, and the inner flow path 26 is used as the turbine 13 and the regenerator 15 (or 1
Although the example in which the third flow path is connected to 15) has been described, the present invention is not limited to this. That is, any of the outer flow path 24, the intermediate flow path 25, and the inner flow path 26 may be the first flow path, the second flow path, and the third flow path.

Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above embodiment and may be implemented in various different forms within the scope of the technical idea thereof.

[0036]

As described above, according to the present invention, since a flow path can be formed by the triple pipe structure between the casing containing the regenerator and the casing, a plurality of pipes are provided. There is no need, and the structure can be simple.
Therefore, the number of parts can be reduced and the cost can be reduced. Moreover, since the number of heat insulating materials and flanges attached to the pipes can be reduced, the number of parts can be reduced and the cost can be reduced. Further, the coaxial triple tube structure can absorb the thermal expansion due to the high temperature gas.

[Brief description of drawings]

FIG. 1 is a system diagram showing an overall configuration of a gas turbine power generation system according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view schematically showing a part of a gas turbine of the gas turbine power generation system in FIG.

FIG. 3 is a sectional view schematically showing a part of a gas turbine according to a second embodiment of the present invention.

FIG. 4 is a sectional view schematically showing a part of a gas turbine according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view schematically showing a part of a gas turbine according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view schematically showing a part of a gas turbine according to a fifth embodiment of the present invention.

[Explanation of symbols]

1 gas turbine 2 gas compressor 3 hot water boiler 10 Air intake port 11 air compressor 12 Annular combustor 13 turbine 14 generator 15,115 regenerator 16 rotation axes 17,117 casing 18 channels 19 housing 20 outer cylinder 21 Intermediate tube 22 Inner cylinder 23,123,223 Exhaust port 24 Outer channel (first channel) 25 Intermediate channel (second channel) 26 inner channel (third channel) 30 Exhaust heat recovery heat exchanger 31 exhaust port 41 plumbing 42 Hot water pipe

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ identification code FI theme code (reference) F02C 7/00 F02C 7/00 B (72) Inventor Naoyuki Hasegawa 11-1 Haneda Asahi-cho, Ota-ku, Tokyo In the EBARA CORPORATION (72) Inventor Yasushi Furuya 11-1 Haneda Asahi-cho, Ota-ku, Tokyo Inside the EBARA CORPORATION (72) Masafumi Kataoka 11-1 Haneda-Asahi-cho, Ota-ku, Tokyo EBARA CORPORATION (72) Inventor Yoshiro Takemura 11-1 Haneda-Asahicho, Ota-ku, Tokyo Ebara Corporation (72) Inventor Hideshi Marui 11-1 Haneda-Asahi-cho, Ota-ku, Tokyo Ebara Corporation

Claims (4)

[Claims] 1. An air compressor for compressing air, a combustor for combusting compressed air compressed by the air compressor, and a turbine rotating by receiving combustion gas generated in the combustor inside a casing. And a regenerator that exchanges heat between the compressed air supplied from the air compressor to the combustor and the exhaust gas discharged from the turbine is housed inside the casing, Is coaxially provided with an outer cylinder, an intermediate cylinder located on the inner peripheral side of the outer cylinder, and an inner cylinder located on the inner peripheral side of the intermediate cylinder. The outer cylinder, the intermediate cylinder, and the Three flow paths formed by an inner cylinder, a first flow path connecting the air compressor and the regenerator, a second flow path connecting the regenerator and the combustor, and the turbine The casing so that there is a third flow path connecting the regenerator and the regenerator. Connected to the casing, the gas turbine device being characterized in that a substantially vertical flow of the exhaust gas in the regenerator relative to the rotational axis of the exhaust direction substantially the same direction or the turbine of the turbine. 2. An air compressor for compressing air, a combustor for combusting the compressed air compressed by the air compressor, and a turbine which receives combustion gas generated in the combustor and rotates inside a casing. And a regenerator that exchanges heat between the compressed air supplied from the air compressor to the combustor and the exhaust gas discharged from the turbine is housed inside the casing, Is coaxially provided with an outer cylinder, an intermediate cylinder located on the inner peripheral side of the outer cylinder, and an inner cylinder located on the inner peripheral side of the intermediate cylinder. The outer cylinder, the intermediate cylinder, and the Three flow paths formed by an inner cylinder, a first flow path connecting the air compressor and the regenerator, a second flow path connecting the regenerator and the combustor, and the turbine The casing so that there is a third flow path connecting the regenerator and the regenerator. Connected to the casing, the exhaust an exhaust port for discharging to the outside the gas, the gas turbine apparatus for the third passage, characterized in that arranged on the exhaust side of the turbine. 3. The gas turbine apparatus according to claim 2, wherein the exhaust port discharges the exhaust gas in a direction substantially the same as a flow direction of the exhaust gas in the regenerator. 4. The flow path formed between the outer cylinder and the intermediate cylinder is the first flow path, and the flow path formed between the intermediate cylinder and the inner cylinder is the second flow path. The gas turbine device according to any one of claims 1 to 3, wherein the gas passage is formed as a passage, and the passage formed inside the inner cylinder is the third passage.