Gas turbine with heat regenerator

Abstract

The invention discloses a gas turbine with a heat regenerator, which belongs to the technical field of gas turbines, and comprises a shell, a combustion chamber, a core machine, a motor part and a heat regenerator part, the shell comprises a main body and an exhaust section on one side, the main body comprises a first shell connecting end face, a second shell connecting end face and a third shell connecting end face, and the exhaust section comprises a first guide vane, a smoke cavity, a fuel gas channel, a fourth shell connecting end face and a shell connecting terminal; the main body and the exhaust section are connected through a first connecting end face of the shell. By reasonably arranging the mounting structures and the mounting relations among the core machine assembly, the combustion chamber, the power generation assembly and the gas turbine shell, compared with the assembly steps and the maintenance steps of an existing gas turbine, the production efficiency and the maintenance efficiency are improved, the assembly time and the maintenance time are saved, and the production cost is reduced. And the consistency of all gas turbines in the assembling stage can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbines, and in particular to a gas turbine with a regenerator. Background Art

[0002] A gas turbine uses a continuously flowing gas as a working fluid to drive the impeller to rotate at high speed, converting the energy of the fuel into useful work. It is a rotating impeller heat engine. It mainly includes three parts: a compressor, a combustion chamber, and a turbine. The compressor inhales air from the external atmosphere and compresses it to increase the pressure, and the air temperature is also increased accordingly; the compressed air is sent to the combustion chamber to mix with the injected fuel and burn to generate high-temperature and high-pressure gas; then it enters the turbine to expand and do work, driving the turbine to drive the compressor (and the external load rotor) to rotate at high speed, which can realize the partial conversion of the chemical energy of the gas or liquid fuel into mechanical work and heat energy, and can also output electrical energy by connecting to a generator.

[0003] However, the current assembly and maintenance steps of gas turbines are relatively complicated, which is not conducive to improving production efficiency and maintenance efficiency, and affects the consistency of each complete machine. To this end, we propose a gas turbine with a regenerator to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a gas turbine with a regenerator. Through a new gas turbine, it has a more optimized installation structure, which is beneficial to improving production efficiency and maintenance efficiency, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: comprising a shell, a combustion chamber, a core engine, a motor part and a regenerator component;

[0006] The shell comprises a main body and an exhaust section on one side, the main body comprises a first connection end face of the shell, a second connection end face of the shell and a third connection end face of the shell, the exhaust section comprises a first guide vane, a smoke cavity, a gas duct, a fourth connection end face of the shell and a shell connection terminal, and the main body and the exhaust section are connected via the first connection end face of the shell;

[0007] The combustion chamber includes a combustion cavity, an exhaust air passage 1, a first connection end face of the combustion chamber, and a second connection end face of the combustion chamber. The shell and the combustion chamber are assembled through the first connection end face of the combustion chamber and the second connection end face of the shell that are connected to each other. The core engine includes a first rotating shaft, a compressor, a first turbine, a first stator component, a first end cover, and a second end cover. The stator component has a first connection end face of the core engine. The first end cover has a second connection end face of the core engine, a third connection end face of the core engine, and a core engine connection terminal. The first end cover and the second end cover can be fixedly connected or integrally formed through the core engine connection end face. The second end cover surrounds the air intake passage of the compressor;

[0008] The first connection end face of the core engine is connected and fixed to the second connection end face of the combustion chamber, the second connection end face of the core engine is connected and fixed to the third connection end face of the shell, and the core engine connection terminal is plugged into the shell connection terminal;

[0009] The motor part comprises a second rotating shaft, a second turbine, and a second stator component. The motor part and the housing are assembled via a first connecting end face of the motor part and a fourth connecting end face of the housing which are connected to each other.

[0010] In a preferred embodiment, the main body and the exhaust section are fixedly connected.

[0011] In a preferred embodiment, the main body and the exhaust section are detachably connected.

[0012] In a preferred embodiment, the regenerator component includes a regenerator and a regenerator, the exhaust section of the shell also includes an exhaust gas outlet and an exhaust gas outlet, the exhaust gas outlet is sealed and connected to the regenerator, the exhaust gas outlet is sealed and connected to the regenerator, the first heat exchange port and the second heat exchange port are respectively opened at the position of the main body corresponding to the regenerator, and the first heat exchange port and the second heat exchange port are respectively opened at the position of the main body corresponding to the regenerator.

[0013] In a preferred embodiment, the regenerator comprises a smoke channel and a compressed gas channel which are isolated from each other and can exchange heat with each other, and the smoke with a certain temperature in the smoke cavity is discharged through the exhaust port after heat exchange through the smoke channel of the regenerator;

[0014] The compressed air compressed by the compressor enters the compressed air channel of the regenerator through the first heat exchange port and absorbs heat from the flue gas. After being heated, the compressed air enters the combustion chamber through the second heat exchange port to participate in combustion.

[0015] In a preferred embodiment, the combustion chamber includes a combustion part and a volute, the combustion part is cylindrical and arranged outside the housing, the main body is provided with a combustion part opening at a position corresponding to the combustion part, and the volute is arranged in the housing and around the first rotating shaft;

[0016] The combustion part opening, the first heat exchange port and the first heat exchange port are located at different positions in the circumferential direction of the main body, and are respectively connected to the combustion part, the regenerator and the regenerator.

[0017] In a preferred embodiment, an air cavity is further provided between the main body and the volute, and the pressurized gas after absorbing heat inside the heat regenerator enters the air cavity through the second heat exchange port, and the pressurized gas inside the air cavity enters the combustion part through the opening of the combustion part to participate in combustion, and the combustion gas after combustion enters the interior of the volute.

[0018] In a preferred embodiment, the combustion part includes a combustion chamber, a pressure air chamber and a nozzle. The pressure air in the pressure air chamber enters the combustion chamber through an opening and mixes with the fuel sprayed from the nozzle and burns in the combustion chamber.

[0019] In a preferred embodiment, the volute includes a volute opening, a second exhaust gas passage and a guide cavity. The combustion gas enters the guide cavity from the volute opening and is guided to the second exhaust gas passage before being discharged.

[0020] In a preferred embodiment, the motor part is arranged on a side of the first shaft away from the first turbine, the exhaust section is arranged on the end side of the main body, and the exhaust section includes an inner cylinder section, which pushes the exhaust gas after the first turbine to be discharged through the inner cylinder section and enter the regenerator and the regenerator for heat exchange.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By reasonably setting the installation structure and installation relationship between the core engine components, combustion chamber and power generation components and the engine casing, compared with the assembly steps and maintenance steps of existing gas turbines, it is beneficial to improve production efficiency and maintenance efficiency, save assembly time and maintenance time, and improve the consistency of each engine in the assembly stage.

[0023] 2. With the gas turbine of this solution, the casing does not need to be disassembled during assembly and maintenance, which can reduce the risk of gas leakage due to disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the gas turbine applicable to Example 1 of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the shell applicable to embodiment 1 of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the combustion chamber applicable to Example 1 of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the core machine applicable to Example 1 of the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the motor part applicable to embodiment 1 of the present invention.

[0029] Figure 6 It is a schematic diagram of the structure when the shell, combustion chamber, core engine and motor part in Example 1 of the present invention are assembled.

[0030] Figure 7 It is a schematic diagram of the structure when assembling the shell and the heat regenerator assembly in Example 2 of the present invention.

[0031] Figure 8 It is a structural schematic diagram applicable to the assembly of the casing, combustion chamber and core engine in Example 2 of the present invention.

[0032] Fig. 9 It is a structural schematic diagram of the shell, combustion chamber, core engine and motor part applicable to Example 2 of the present invention.

[0033] Fig.10 It is a schematic diagram of the overall structure applicable to Example 3 of the present invention.

[0034] Fig.11 It is a schematic diagram of the structure of the combustion part applicable to Example 3 of the present invention.

[0035] Fig.12 Schematic diagram of the structure of the volute applicable to embodiment 3 of the present invention.

[0036] Fig.13 It is a schematic diagram of the internal structure applicable to Example 4 of the present invention.

[0037] Fig.14 It is a top view of the overall structure applicable to Example 4 of the present invention.

[0038] Fig.15 It is a schematic diagram of the overall structure applicable to Example 4 of the present invention.

[0039] In the figure:

[0040] 100, casing; 200, combustion chamber; 300, core engine; 400, motor unit;

[0041] 110, main body; 101, first connection end face of housing; 102, second connection end face of housing; 103, fourth connection end face of housing; 104, third connection end face of housing; 105, connection terminal of housing;

[0042] 111, first heat exchange port; 112, second heat exchange port; 113, third heat exchange port; 114, fourth heat exchange port; 115, combustion part opening; 116, air cavity;

[0043] 120, exhaust section; 121, smoke chamber; 122, first guide vane; 123, fuel gas duct; 124, tail gas outlet 1; 126, tail gas outlet 2; 128, inner tube section;

[0044] 200, combustion chamber; 210, combustion cavity; 220, exhaust air passage 1; 230, combustion part; 240, volute;

[0045] 201, first connection end face of combustion chamber; 202, second connection end face of combustion chamber; 203, connection end face of volute; 204, connection end face of combustion part;

[0046] 231. Combustion chamber; 232. Pressure air chamber; 233. Nozzle;

[0047] 241. Exhaust airway 2; 242. Guide cavity; 243. Volute opening;

[0048] 310, first rotating shaft; 320, compressor; 330, first turbine; 340, first stator component; 350, first end cover; 360, second end cover;

[0049] 301, first connection end face of the core engine; 302, second connection end face of the core engine; 303, third connection end face of the core engine; 304, connection terminal of the core engine;

[0050] 410, second rotating shaft; 420, second turbine; 430, second stator component; 401, first connecting end surface of the motor part;

[0051] 510. Regenerator 1; 520. Regenerator 2. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0053] Example 1

[0054] like Figure 1-6As shown, this embodiment provides a gas turbine, specifically including a casing 100, and a combustion chamber 200, a core engine 300 and a motor part 400 respectively mounted to the casing 100, and the casing 100, the combustion chamber 200, the core engine 300 and the motor part 400 can be connected to each other through different connection end faces.

[0055] Please refer to Figure 2 In this embodiment, the shell 100 includes a main body 110 and an exhaust section 120. The main body 110 is roughly cylindrical in shape, and the exhaust section 120 is roughly trumpet-shaped. The exhaust section 120 is installed at one end of the main body 110. The main body 110 and the exhaust section 120 are fixedly connected through the first connecting end face 101 of the shell, wherein the main body 110 and the exhaust section 120 can be connected in a detachable manner or in a non-detachable manner.

[0056] Non-detachable connection methods, such as welding, especially continuous sealing welding, can improve the sealing of the housing 100, especially in models with a regenerator, which can reduce air leakage and improve heat recovery efficiency.

[0057] Removable connection method: such as screw and nut connection with a sealing structure, which can improve maintainability and is conducive to detection and structural optimization design during the testing machine stage.

[0058] Continue to refer to Figure 2 The main body 110 includes a second shell connection end face 102 and a third shell connection end face 104. The exhaust section 120 includes a first guide vane 122, a smoke cavity 121, a gas duct 123, a fourth shell connection end face 103 and a shell connection terminal 105.

[0059] Please refer to Figure 3 The combustion chamber 200 includes a combustion chamber 210, an exhaust gas passage 220, a first connection end surface 201 of the combustion chamber, and a second connection end surface 202 of the combustion chamber.

[0060] In this embodiment, the connection method between the first connecting end face 201 of the combustion chamber and the second connecting end face 102 of the shell is a detachable connection, such as a screw and nut connection and is equipped with a sealing structure. This method can improve maintainability and facilitate replacement of the combustion chamber 200. In models with a regenerator, a sealing structure is required to separate the cavities on both sides to facilitate the compressed gas to enter the regenerator for heat exchange before entering the combustion chamber 200.

[0061] Please refer to Figure 4The core engine 300 includes a first rotating shaft 310, and a compressor 320 and a first turbine 330 mounted on the first rotating shaft 310. The core engine 300 also includes a first stator component 340, a first end cover 350, and a second end cover 360. The first stator component 340 may specifically include a first bearing seat, a second guide vane, etc. A bearing may be provided between the first bearing seat and the first rotating shaft 310, and the bearing may be a non-contact bearing, such as an air bearing, or a contact bearing such as a ball bearing.

[0062] The first end cover 350 and the second end cover 360 can be fixedly connected or integrally formed through the third connection end face 303 of the core engine. The second end cover 360 surrounds and forms the air intake passage of the compressor 320. The first stator component 340 has a first connection end face 301 of the core engine, and the first end cover 350 has a second connection end face 302 of the core engine and a connection terminal 304 of the core engine.

[0063] Please refer to Figure 5 The motor part 400 includes a second rotating shaft 410 and a second turbine 420 mounted at one end of the second rotating shaft 410. The motor part 400 also includes a second stator component 430, which may specifically include a second bearing seat and a motor stator. A bearing may be provided between the second bearing seat and the second rotating shaft 410, and the bearing may be a non-contact bearing, such as an air bearing, or a contact bearing such as a ball bearing.

[0064] The motor portion 400 further includes a motor portion first connection end surface 401 .

[0065] Reference Figure 1 , Figure 6 , the specific assembly process of this implementation is as follows:

[0066] Reference Figure 1 When the combustion chamber 200 is installed on the housing 100, the first connection end face 201 of the combustion chamber is fixedly connected to the second connection end face 102 of the housing;

[0067] After the combustion chamber 200 is installed in the casing 100, the first core engine connection end face 301 on the core engine 300 can be fixedly connected to the second combustion chamber connection end face 202 of the combustion chamber 200, and the second core engine connection end face 302 on the core engine 300 can be fixedly connected to the casing third connection end face 104 of the casing 100, and the core engine connection terminal 304 on the core engine 300 is plugged into the casing connection terminal 105 of the casing 100;

[0068] When the motor part 400 is mounted to the housing 100 , the first connection end surface 401 of the motor part may be fixedly connected to the fourth connection end surface 103 of the housing 100 .

[0069] Example 2

[0070] Please refer to the instruction manual Figure 7-9 This embodiment discloses a gas turbine with a regenerator. The difference between this embodiment and embodiment 1 is that, based on embodiment 1, the gas turbine is further equipped with a heat exchanger assembly, and the housing 100 is also changed to a certain extent, as follows:

[0071] The regenerator assembly includes a regenerator 1 510 and a regenerator 2 520. The exhaust section 120 of the shell 100 also includes an exhaust gas outlet 1 124 and an exhaust gas outlet 2 126. The exhaust gas outlet 2 126 and the exhaust gas outlet 1 124 are sealed and connected to the regenerator 1 510 and the regenerator 2 520 respectively. The main body 110 of the shell 100 includes a first heat exchange port 111 and a second heat exchange port 112 corresponding to the regenerator 1 510, and a third heat exchange port 113 and a fourth heat exchange port 114 corresponding to the regenerator 2 520.

[0072] The specific structure of the housing 100 in this embodiment can be further referred to in Figure 8 .

[0073] Continue to refer to the instruction manual Figure 7 , the regenerator assembly of this embodiment is specifically described. Since the structures of regenerator 1 510 and regenerator 2 520 are similar, taking regenerator 1 510 as an example, regenerator 1 510 includes a flue gas channel and a compressed gas channel which are isolated from each other and can exchange heat with each other. The flue gas with a certain temperature in the flue gas cavity 121 is discharged through the exhaust port after heat exchange through the flue gas channel of the regenerator 1 510. The compressed gas compressed by the compressor 320 enters the compressed gas channel of the regenerator 1 510 through the first heat exchange port 111 and absorbs heat from the flue gas. After heating, it enters the combustion chamber 200 through the second heat exchange port 112 to participate in combustion.

[0074] On the basis of Example 1, adding a regenerator assembly can further recover the heat in the flue gas to further improve the thermal efficiency of the gas turbine.

[0075] Example 3

[0076] Please continue to refer to the instruction manual Figure 10-12 This embodiment is another gas turbine with a regenerator, which is different from Embodiment 1-2 in that, based on the combustion chamber 200 provided in Embodiment 1-2, this embodiment is a single-tube combustion chamber, specifically adding a combustion section 230 and a volute 240.

[0077] The main body 110 of the housing 100 includes a combustion part opening 115 corresponding to the combustion part 230, the volute 240 is arranged in the housing 100 and around the first rotating shaft 310, and the combustion part 230 is cylindrical and arranged outside the housing 100. The combustion part opening 115, the first heat exchange port 111 and the third heat exchange port 113 are located at different positions on the circumference of the main body 110 to correspond to the combustion part 230, the regenerator 1 510 and the regenerator 2 520.

[0078] The single-tube combustion chamber engine in this embodiment may also be provided with only one regenerator, namely, regenerator 510.

[0079] There is an air cavity 116 between the main body 110 of the shell 100 and the volute 240. The pressurized gas after absorbing heat in the regenerator 1 510 or the regenerator 2 520 enters the air cavity 116 through the second heat exchange port 112 or the fourth heat exchange port 114, and enters the combustion section 230 through the combustion section opening 115 to participate in combustion, and the combustion gas enters the volute 240.

[0080] Please refer to the instruction manual Fig.11 , the combustion part 230 in this embodiment is specifically described. The combustion part 230 includes a combustion chamber 231, a pressure air chamber 232 and a nozzle 233. The pressure air in the pressure air chamber 232 enters the combustion chamber 231 through the opening and mixes with the fuel sprayed from the nozzle 233 to burn in the combustion chamber 231.

[0081] Please refer to the instruction manual Fig.12 The volute 240 in this embodiment is described in detail. The volute 240 includes a volute opening 243, a second exhaust gas passage 241, and a guide cavity 242. Different from the annular combustion chamber, the guide cavity 242 does not have air holes, so that the combustion gas entering from the volute opening 243 is guided in the guide cavity 242 and discharged from the second exhaust gas passage 241.

[0082] The combustion part 230 includes a combustion part connecting end face 204 , and the volute 240 includes a volute connecting end face 203 . The combustion part connecting end face 204 can be fixedly connected to the volute connecting end face 203 .

[0083] Example 4

[0084] Please refer to the instruction manual Figure 13-15 This embodiment provides a gas turbine with a regenerator, which is different from Embodiment 2 in that the motor part 400 is arranged on a side of the first rotating shaft 310 away from the first turbine 330, or no motor is arranged.

[0085] In this embodiment, the exhaust section 120 is not provided with the motor part 400, and the exhaust section 120 is provided at the end side of the main body 110, and the exhaust section 120 includes an inner cylinder section 128, and the exhaust gas after the turbine is pushed is discharged through the inner cylinder section 128 and enters the regenerator 1 510 and the regenerator 2 520 for heat exchange. In this embodiment, since the motor is not provided at the exhaust end, the exhaust section is simple in design and the exhaust flow rate and exhaust efficiency can be improved.

[0086] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0087] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0088] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas turbine with a regenerator, comprising a casing (100), a combustion chamber (200), a core engine (300), a motor unit (400) and a regenerator component, characterized in that: The shell (100) comprises a main body (110) and an exhaust section (120) on one side, the main body (110) comprises a first shell connection end surface (101), a second shell connection end surface (102) and a third shell connection end surface (104), the exhaust section (120) comprises a first guide vane (122), a smoke cavity (121), a gas duct (123), a fourth shell connection end surface (103) and a shell connection terminal (105), and the main body (110) and the exhaust section (120) are connected via the first shell connection end surface (101); The combustion chamber (200) comprises a combustion cavity (210), an exhaust gas passage 1 (220), a first combustion chamber connection end surface (201), and a second combustion chamber connection end surface (202); the shell (100) and the combustion chamber (200) are assembled via the first combustion chamber connection end surface (201) and the shell second connection end surface (102) which are connected to each other; The core engine (300) comprises a first rotating shaft (310), a compressor (320), a first turbine (330), a first stator component (340), a first end cover (350), and a second end cover (360); the first stator component (340) has a first core engine connection end face (301); the first end cover (350) has a second core engine connection end face (302), a third core engine connection end face (303), and a core engine connection terminal (304); The first connection end face (301) of the core engine is connected and fixed to the second connection end face (202) of the combustion chamber, the second connection end face (302) of the core engine is connected and fixed to the third connection end face (104) of the casing, and the core engine connection terminal (304) is plugged into the casing connection terminal (105); The motor part (400) comprises a second rotating shaft (410), a second turbine (420), and a second stator component (430); the motor part (400) and the housing (100) are assembled via a first connecting end face (401) of the motor part and a fourth connecting end face (103) of the housing which are connected to each other.

2. A gas turbine with a regenerator according to claim 1, characterized in that: The main body (110) and the exhaust section (120) are fixedly connected.

3. A gas turbine with a regenerator according to claim 1, characterized in that: The main body (110) and the exhaust section (120) are detachably connected.

4. A gas turbine with a regenerator according to claim 1, characterized in that: The regenerator component includes a regenerator one (510) and a regenerator two (520), and the exhaust section (120) of the shell (100) also includes an exhaust gas outlet one (124) and an exhaust gas outlet two (126), wherein the exhaust gas outlet two (126) is sealed and connected to the regenerator one (510), and the exhaust gas outlet one (124) is sealed and connected to the regenerator two (520), and the main body (110) is provided with a first heat exchange port (111) and a second heat exchange port (112) at a position corresponding to the regenerator one (510), and the main body (110) is provided with a first heat exchange port, a third heat exchange port (113) and a second heat exchange port and a fourth heat exchange port (114) at a position corresponding to the regenerator two (520).

5. A gas turbine with a regenerator according to claim 4, characterized in that: The regenerator 1 (510) comprises a smoke channel and a compressed gas channel which are isolated from each other and can exchange heat with each other, and the smoke with a certain temperature in the smoke chamber (121) is discharged through the exhaust port after heat exchange through the smoke channel of the regenerator 1 (510); The compressed air compressed by the compressor (320) enters the compressed air channel of the regenerator (510) through the first heat exchange port (111) and absorbs heat from the flue gas. After being heated, the compressed air enters the combustion chamber (200) through the second heat exchange port (112) to participate in combustion.

6. A gas turbine with a regenerator according to claim 4, characterized in that: The combustion chamber (200) comprises a combustion portion (230) and a volute (240); the combustion portion (230) is cylindrical and arranged outside the housing (100); the main body (110) is provided with a combustion portion opening (115) at a position corresponding to the combustion portion (230); the volute (240) is arranged in the housing (100) and surrounds the first rotating shaft (310); The combustion part opening (115), the first heat exchange port (111) and the first heat exchange port third heat exchange port (113) are located at different positions on the circumference of the main body (110), and are respectively connected to the combustion part (230), the regenerator one (510) and the regenerator two (520).

7. A gas turbine with a regenerator according to claim 6, characterized in that: An air cavity (116) is also provided between the main body (110) and the volute (240). The pressurized gas after absorbing heat inside the regenerator 1 (510) enters the air cavity (116) through the second heat exchange port (112). The pressurized gas after absorbing heat inside the regenerator 2 (520) enters the air cavity (116) through the second heat exchange port and the fourth heat exchange port (114). The pressurized gas inside the air cavity (116) enters the combustion part (230) through the combustion part opening (115) to participate in combustion, and the combustion gas after combustion enters the interior of the volute (240).

8. A gas turbine with a regenerator according to claim 7, characterized in that: The combustion section (230) comprises a combustion chamber (231), a pressure air chamber (232) and a nozzle (233); the pressure air in the pressure air chamber (232) enters the combustion chamber (231) through an opening and is mixed with the fuel sprayed from the nozzle (233) and combusted in the combustion chamber (231).

9. A gas turbine with a regenerator according to claim 7, characterized in that: The volute (240) comprises a volute opening (243), a second exhaust gas passage (241) and a guide cavity (242); the combustion gas enters the guide cavity (242) from the volute opening (243) and is guided to the second exhaust gas passage (241) before being discharged.

10. The gas turbine with a regenerator according to claim 1, characterized in that: The motor part (400) is arranged on a side of the first rotating shaft (310) away from the first turbine (330), and the exhaust section (120) is arranged on the end side of the main body (110). The exhaust section (120) includes an inner cylinder section (128), and the exhaust gas after pushing the first turbine (330) is discharged through the inner cylinder section (128) and enters the regenerator 1 (510) and the regenerator 2 (520) for heat exchange.

Images