A corrugated regenerator for thermoelectric power generation and a gas turbine

Abstract

This invention relates to the field of power generation technology, specifically to a thermoelectric power generation corrugated regenerator and a gas turbine. The thermoelectric power generation corrugated regenerator includes a corrugated channel structure unit, a thermoelectric power generation device, and an outer casing. The corrugated channel structure unit includes an upper corrugated plate and a lower corrugated plate, which are staggered to form alternating hot flow channels and cold flow channels. The thermoelectric power generation device is embedded in the junction area of ​​the upper and lower corrugated plates and extends through the walls of the cold flow channels on both sides. The outer casing encapsulates multiple corrugated channel structure units into a modular body. The thermoelectric power generation corrugated regenerator is installed in the exhaust gas path of the gas turbine. The cold flow channel of the thermoelectric power generation corrugated regenerator is connected to the compressor outlet of the gas turbine, and the hot flow channel of the thermoelectric power generation corrugated regenerator is connected to the turbine exhaust port of the gas turbine. This invention has a compact structure and high integration, and is suitable for energy recovery systems under various high-temperature and cold-heat interaction conditions.

Description

Technical Field

[0001] This invention relates to the field of power generation technology, specifically to a thermoelectric power generation corrugated regenerator and a gas turbine. Background Technology

[0002] Although research and practice have been conducted on the application of thermoelectric power generation modules in the recovery of exhaust heat energy in energy systems, most solutions in gas turbine systems have not yet achieved deep integration with the regenerator due to the constraints of compact structural layout, high exhaust temperature, and high airflow velocity. Currently, most common thermoelectric conversion structures are external or add-on arrangements, failing to fully utilize the existing hot and cold flow channels within the heat exchanger. This increases system size and complexity, and makes it difficult to arrange a sufficient number of thermoelectric conversion modules to create an effective temperature difference within a limited space. Furthermore, some solutions have simple interface arrangements between the hot and cold ends, failing to achieve a good match with the flow channel structure, resulting in high thermal resistance, low temperature difference utilization, and limited thermoelectric conversion efficiency. Even worse, under high-temperature and high-speed flow conditions, issues such as module packaging reliability and heat exchange stability also limit their application expansion in gas turbines. Summary of the Invention

[0003] The purpose of this invention is to provide a compact, highly integrated thermoelectric corrugated regenerator and gas turbine suitable for gas turbine systems.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, embodiments of the present invention provide a thermoelectric power generation corrugated regenerator, comprising:

[0006] The corrugated channel structure unit includes an upper corrugated plate and a lower corrugated plate, which are arranged in an alternating manner to form hot flow channels and cold flow channels.

[0007] Thermoelectric generator is embedded in the junction area between the upper corrugated plate and the lower corrugated plate, and runs through the walls of the cold flow channels on both sides.

[0008] The outer shell encapsulates the multiple corrugated channel structural units into a modular body.

[0009] Optionally, the thermoelectric power generation device includes multiple thermoelectric conversion modules. The thermoelectric conversion modules are embedded in the docking part of each hot flow channel and cold flow channel in the form of a plate module array. The upper and lower surfaces of the thermoelectric conversion modules are hot ends and are in contact with the hot flow channel, while the left and right sides of the thermoelectric conversion modules are cold ends and exchange heat with the wall of the cold flow channel.

[0010] Optionally, the cold end of the thermoelectric conversion module is provided with a composite gasket with high thermal conductivity and insulation.

[0011] Optionally, the corrugated channel geometry of the corrugated channel structure unit is adjustable, and the corrugated channel geometry includes wave height, wave pitch, and waveform parameters that control the waveform shape.

[0012] Optionally, the waveforms of the upper corrugated plate and the lower corrugated plate are adjustable asymmetric periodic curves designed based on a variable parameter function, wherein the variable parameter function is in the form of:

[0013]

[0014] in, The height of the corrugated curve at position x. The total height between the crests and troughs, P is the ripple period length, and i is the waveform number. is the position coordinate along the length of the channel, and N is the waveform parameter that controls the steepness and asymmetry of the waveform.

[0015] Optionally, module slots are reserved at the crests of the upper corrugated plate and the lower corrugated plate. The thermoelectric conversion module is embedded in the module slots. The module slots are integrally formed by laser cutting or molding. The boundary of the thermoelectric conversion module and the surface of the upper and lower corrugated plates are sealed with high thermal conductivity insulating adhesive or brazing to achieve hermetical sealing and enhanced heat conduction.

[0016] Optionally, the packaging structure of the thermoelectric conversion module adopts brazing and ceramic insulation protection, the insulation thickness of the ceramic insulation protection is 0.5-1mm, the hot end contact surface of the thermoelectric conversion module is provided with a high thermal conductivity sheet, the high thermal conductivity sheet is a graphite sheet or metal foil, and the cold end side of the thermoelectric conversion module is provided with a thermally conductive ceramic or high thermal conductivity composite material gasket.

[0017] Optionally, the upper corrugated plate and the lower corrugated plate are made of high-temperature alloy material, wherein the high-temperature alloy material is GH4169.

[0018] Secondly, embodiments of the present invention provide a gas turbine including the thermoelectric power generation corrugated regenerator described in any of the above claims. The thermoelectric power generation corrugated regenerator is installed in the exhaust gas path of the gas turbine. The cold flow channel of the thermoelectric power generation corrugated regenerator is connected to the compressor outlet of the gas turbine, and the hot flow channel of the thermoelectric power generation corrugated regenerator is connected to the turbine exhaust port of the gas turbine.

[0019] Optionally, the DC power output from the thermoelectric corrugated regenerator is used to power the sensors of the gas turbine, power auxiliary equipment, or connect to the power buffer unit of the turbine control system of the gas turbine.

[0020] The beneficial effects of this invention are as follows: By embedding a thermoelectric conversion module at the contact point between the upper trough and lower crest of the corrugated channel, this invention utilizes the natural temperature difference between the gas turbine exhaust and compressed air to construct a thermoelectric functional interface with the upper and lower ends being hot and the left and right ends being cold, effectively achieving the integration of heat exchange and power generation. The geometrical design of the corrugated channel creates a stable temperature difference distribution between the hot and cold flow channels, providing a foundation for the efficient operation of the thermoelectric power generation device. This structure avoids the space occupation problem of external designs, possesses good integration, hot-end-cold-end interface adaptability, and operational stability under typical gas turbine operating conditions, effectively improving the utilization depth of exhaust waste heat and the overall energy efficiency level of the system. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the thermoelectric power generation corrugated regenerator in an embodiment of the present invention;

[0023] Figure 2 This is an external view of the thermoelectric power generation corrugated regenerator in an embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional view of the channel of the thermoelectric power generation corrugated regenerator in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the gas turbine regenerative system in an embodiment of the present invention.

[0026] Reference numerals: 100, Corrugated channel structural unit; 110, Upper corrugated plate; 120, Lower corrugated plate; 130, Module slot; 11, Hot flow channel; 12, Cold flow channel; 200, Thermoelectric generator; 210, Thermoelectric conversion module; 211, Hot end; 212, Cold end; 300, Outer casing. Detailed Implementation

[0027] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0028] The technical terms involved in this invention will be introduced below:

[0029] Gas turbine: A thermodynamic cycle device that converts the chemical energy of fuel into the kinetic energy of high-temperature and high-pressure gas, and then outputs mechanical work through a turbine. It is widely used in power plants, ships, aviation, oil and gas industries and other fields.

[0030] Regenerator: A heat exchange device used to recover waste heat from the high-temperature exhaust gas of a gas turbine and transfer the heat to a low-temperature fluid to improve overall thermal efficiency.

[0031] Corrugated channels: fluid channels with a periodic wavy surface. Their geometric profile can be adjusted by parameters such as wave height and wave pitch to enhance heat transfer and flow disturbance.

[0032] Thermoelectric conversion module: A thermoelectric conversion device based on the Seebeck effect, consisting of a hot end and a cold end. It can generate DC power when there is a temperature difference between the two ends. It has the advantages of having no moving parts and a compact structure.

[0033] Hot end / cold end: The hot end is the side of the thermoelectric conversion module that contacts the high-temperature channel, and the cold end is the side that contacts the cooling medium or heat exchange surface. The temperature difference between the two is the source of the power generation driving force.

[0034] Waveform parameter (N): The geometric index that controls the shape of the corrugated channel determines the sharpness and smoothness of the waveform, thereby affecting the local velocity distribution, pressure drop characteristics and heat transfer effect.

[0035] With increasing global energy shortages and pressure to control carbon emissions, improving the energy utilization rate of thermal machinery systems and developing efficient energy recovery technologies have become important research directions in the field of gas turbines. Gas turbines are widely used in aviation propulsion, distributed energy, and marine power, but their thermal efficiency is limited by the energy loss from the underutilization of high-temperature gas in a typical Brayton cycle.

[0036] As a key component for improving the thermal efficiency of gas turbines, the regenerator works by preheating the compressed air from the compressor using the high-temperature exhaust gas from the turbine. This reduces fuel consumption in the combustion chamber and improves the overall thermal efficiency of the system. Regenerators commonly employ various structural forms, such as plate and shell-and-tube types, to recover energy through heat exchange between hot and cold flow channels. However, traditional regenerators only recover the "thermal energy" portion of the exhaust gas, failing to utilize the existing temperature difference for electrical energy conversion. This results in underutilization of system energy, and issues such as pressure loss and heat exchange efficiency still have room for optimization.

[0037] In recent years, thermoelectric power generation (TEG) technology has become an important means of deep heat recovery in high-temperature environments due to its advantages of simple structure, no moving parts, and the ability to directly convert waste heat into electricity. Based on the Seebeck effect, TEG devices can output stable direct current when a temperature difference exists between the hot and cold ends. Therefore, if TEG can be embedded in the regenerator structure, utilizing the temperature difference in the existing hot and cold flow channels within the gas turbine to achieve power output, the system's energy efficiency ratio and overall energy utilization level will be further improved. Existing research has attempted to apply TEG to scenarios such as waste heat recovery from internal combustion engine exhaust and power generation from waste gas in thermal power plants; however, integrating thermoelectric conversion modules into the high-temperature, high-velocity, and space-constrained structure of gas turbines still presents many challenges.

[0038] In summary, this invention proposes an integrated structure that embeds a thermoelectric conversion module into the cold-heat interface region of a corrugated regenerator. It utilizes the geometric differences in the corrugated channels to create inherent asymmetry in the cross-section and flow rate of the hot and cold flow channels, thereby achieving an integrated design of heat recovery and electrical energy conversion. In contrast, related technologies either fail to deeply integrate with the regenerator structure or have complex structures, making it difficult to achieve stable and efficient thermoelectric conversion in the high-temperature, high-velocity operating environment of gas turbines.

[0039] See Figure 1 and Figure 2 The present invention provides a thermoelectric corrugated regenerator, comprising:

[0040] The corrugated channel structure unit 100 includes an upper corrugated plate 110 and a lower corrugated plate 120. The upper corrugated plate 110 and the lower corrugated plate 120 are arranged in an alternating manner to form a hot flow channel 11 and a cold flow channel 12.

[0041] It should be noted that the corrugated plate has an asymmetric cosine waveform, and the geometric characteristics of each channel can be set by the waveform parameter N. Hot flow channels 11 are located in the space above and below the corrugated plate to guide the flow of high-temperature exhaust gas from the gas turbine. Cold flow channels 12 are arranged between the hot flow channels 11, alternating with them, to guide the pressurized air from the gas turbine compressor outlet for preheating before entering the combustion chamber.

[0042] Thermoelectric generator 200 is embedded in the junction area of ​​the upper corrugated plate 110 and the lower corrugated plate 120, and runs through the walls of the left and right cold flow channels 12.

[0043] The thermoelectric generator 200 is embedded in the trough-crest contact area at the junction of the upper and lower corrugated plates 120 in a rectangular structure, and runs through the walls of the left and right cold flow channels 12. Its upper and lower wide surfaces directly contact the high-temperature exhaust hot flow channel 11, forming the hot end 211 surface; while its left and right narrow surfaces are embedded between the walls of the cold air flow channel and contact the pressurized air, forming the cold end 212 surface.

[0044] The outer casing 300 encapsulates the plurality of corrugated channel structural units 100 into a modular body.

[0045] This invention proposes a thermoelectric power generation corrugated regenerator suitable for gas turbine systems. It features a compact structure and high integration, enabling waste heat and electrical energy recovery while effectively exchanging heat, thus improving the overall system energy efficiency. The thermoelectric power generation corrugated regenerator constructs a hot and cold flow channel 11 using an alternating combination of upper and lower corrugated plates 120. A thermoelectric conversion module 210 is embedded in the interface region, utilizing the temperature difference between the hot and cold flows to drive power generation. It is particularly suitable for the high-temperature, high-speed exhaust conditions of gas turbines and the high-pressure cold air reheating requirements, possessing long-term operational stability and maintainability.

[0046] In some embodiments, the thermoelectric power generation device 200 includes a plurality of thermoelectric conversion modules 210. The thermoelectric conversion modules 210 are embedded in the docking portion of each hot flow channel 11 and cold flow channel 12 in the form of a sheet-like module array. The upper and lower surfaces of the thermoelectric conversion modules 210 are hot ends 211 and are in contact with the hot flow channel 11. The left and right sides of the thermoelectric conversion modules 210 are cold ends 212 and exchange heat with the wall of the cold flow channel 12.

[0047] In some embodiments, the corrugated channel geometry of the corrugated channel structure unit 100 is adjustable, and the corrugated channel geometry includes wave height, wave pitch, and waveform parameters that control the waveform shape.

[0048] By embedding thermoelectric conversion modules 210 at the connection points of each hot and cold flow channel 11, a sheet-like module array is formed, and the power output scale can be determined according to the module spacing and length. The geometric configuration of the corrugated channel (such as wave height, wave pitch, and waveform offset) is adjustable, so that the flow rate, velocity, and temperature difference of the hot and cold flow channels 11 are better matched, thereby improving power generation efficiency and heat recovery performance.

[0049] In some embodiments, the cold end 212 of the thermoelectric conversion module 210 is provided with a composite gasket with high thermal conductivity and heat insulation.

[0050] The thermoelectric conversion module 210 is tightly bonded to the heat flow channel 11 through a thermally conductive material, while a high thermal conductivity insulating composite gasket is set on the cold end 212 side to improve the temperature difference maintenance capability and avoid short circuits.

[0051] In some embodiments, the waveforms of the upper corrugated plate 110 and the lower corrugated plate 120 are adjustable asymmetric periodic curves designed based on a variable parameter function, wherein the variable parameter function is in the form of:

[0052]

[0053] in, The height of the corrugated curve at position x. The total height between the crests and troughs, P is the ripple period length, and i is the waveform number. Here, N represents the position coordinates along the length of the channel, and N is a waveform parameter that controls the steepness and asymmetry of the waveform. The value of N ranges from 0.5 to 2.0. By adjusting the value of N, controllable deformation can be achieved from a standard cosine waveform (N=1) to a spike-shaped or plateau-shaped ripple.

[0054] refer to Figure 3 To enhance the heat transfer efficiency between hot and cold flows and improve the fit between the embedded thermoelectric conversion module 210 and the channel interface, this invention employs a parameterizable asymmetric corrugated channel design, the geometric profile of which is described by a variable parameter function. The variable parameter function possesses the following technical features and design advantages:

[0055] Adjustable heat transfer area and pressure drop control: By changing the waveform parameter N, the sharpness of the waveform can be controlled without affecting the overall peak and trough height, thereby achieving a balance between enhanced heat transfer and flow resistance.

[0056] The installation structure adapted to thermoelectric conversion module 210: Unlike traditional cosine or triangular waves, this waveform has more obvious peak / trough plateau areas, which can accurately correspond to the embedding area of ​​thermoelectric conversion module 210, improving contact area and thermal coupling efficiency.

[0057] Good manufacturability and structural stability: The function curves used are mathematically continuous and differentiable, which facilitates mass production through CNC machining or sheet metal forming processes;

[0058] Efficient heat flux conduction path: Through the spatial distribution of this type of waveform, a larger heat exchange interface is formed between the heat flow channel 11 and the cold channel. At the same time, multi-point heat flux input is achieved in the peak / trough direction, which helps to maintain the temperature difference at the end face of the thermoelectric conversion module 210.

[0059] In the actual structure, this waveform is used to construct the hot and cold flow channel 11 between the upper corrugated plate 110 and the lower corrugated plate 120. The periodic waveform enables indirect heat exchange of hot and cold fluids and high-temperature difference driving of the power generation module. Compared with traditional corrugated plates, this design has higher geometric flexibility and energy recovery efficiency.

[0060] In some embodiments, module slots 130 are reserved at the crests of the upper corrugated plate 110 and the lower corrugated plate 120. The thermoelectric conversion module 210 is embedded in the module slots 130. The module slots 130 are integrally formed by laser cutting or molding. The boundary of the thermoelectric conversion module 210 and the surface of the upper corrugated plate 110 and the lower corrugated plate 120 are sealed with high thermal conductivity insulating adhesive or brazing to achieve hermetically sealed and enhanced heat conduction.

[0061] In some embodiments, the encapsulation structure of the thermoelectric conversion module 210 adopts brazing and ceramic insulation protection. The insulation thickness of the ceramic insulation protection is 0.5-1mm. The hot end 211 contact surface of the thermoelectric conversion module 210 is provided with a high thermal conductivity sheet, which is a graphite sheet or metal foil. The cold end 212 side of the thermoelectric conversion module 210 is provided with a thermally conductive ceramic or high thermal conductivity composite material gasket.

[0062] In some embodiments, the upper corrugated plate 110 and the lower corrugated plate 120 are made of a high-temperature alloy material, namely GH4169.

[0063] To achieve integrated structure and compact layout, this invention pre-reserves module slots 130 at the crests of the upper and lower corrugated plates 120, allowing the thermoelectric conversion module 210 to be directly embedded during manufacturing or assembly. The slots are integrally formed using laser cutting or molding processes. The module boundaries and plate surfaces are sealed with high thermal conductivity insulating adhesive or brazing to enhance heat conduction, ensuring structural stability and heat exchange efficiency. Details are as follows:

[0064] Corrugated plate material and structure: Made of high-temperature alloy material (such as GH4169), which has heat resistance and corrosion resistance; the waveform is manufactured with high precision, which is conducive to module alignment and embedding.

[0065] Thermoelectric conversion module 210 design and packaging: The module structure is customized to match the size of the corrugated slot. The packaging structure adopts brazing + ceramic insulation protection to avoid thermal runaway and electrical short circuit. The insulation thickness is 0.5-1mm.

[0066] Thermal conduction and insulation auxiliary structure: The hot end 211 is equipped with a high thermal conductivity sheet (graphite sheet or metal foil) on the contact surface, and the cold end 212 is equipped with a thermally conductive ceramic or high thermal conductivity composite material gasket to ensure a constant temperature difference between the two ends and improve the thermoelectric conversion efficiency.

[0067] Installation and replacement mechanism: The modules are inserted in a plate array and fixed between the upper and lower corrugated plates 120 by clamping parts. They can be replaced individually for easy maintenance.

[0068] See Figure 4The present invention provides a gas turbine including the thermoelectric power generation corrugated regenerator as described in any of the above claims. The thermoelectric power generation corrugated regenerator is installed in the exhaust gas path of the gas turbine. The cold flow channel 12 of the thermoelectric power generation corrugated regenerator is connected to the compressor outlet of the gas turbine, and the hot flow channel 11 of the thermoelectric power generation corrugated regenerator is connected to the turbine exhaust port of the gas turbine.

[0069] In some embodiments, the DC power output from the thermoelectric corrugated regenerator is used to power the sensors of the gas turbine, power auxiliary equipment, or connect to the power buffer unit of the turbine control system of the gas turbine.

[0070] Specifically, the thermoelectric corrugated regenerator can be embedded in the gas turbine body and directly connected to the existing exhaust gas pipeline and compressed air pipeline, without the need for additional supports or cooling systems. The output electrical energy can be used to power sensors, auxiliary equipment, or connected to the power buffer unit of the turbine control system, and has a certain self-powering capability.

[0071] As attached Figure 4 As shown, the operation process of the thermoelectric corrugated regenerator is as follows:

[0072] The high-pressure air (cold end 212) from the compressor outlet enters the regenerator through the cold flow channel 12 and is preheated before entering the combustion chamber.

[0073] The high-temperature gas generated in the combustion chamber is discharged after being powered by the turbine. It flows through the heat flow channel 11 through the upper and lower parts of the regenerator and is arranged adjacent to the cold air baffle to achieve heat transfer.

[0074] The thermoelectric conversion module 210, located between the interfaces of the hot and cold flow channels 11, has its upper and lower surfaces (hot end 211) in contact with the high-temperature exhaust gas, and its left and right sides (cold end 212) exchange heat with the walls of the cold air flow channel through a heat-conducting structure to form a stable temperature difference.

[0075] Due to the Seebeck effect, a potential difference is formed across the thermoelectric conversion module 210, which can output direct current to realize the conversion of heat energy into electrical energy.

[0076] Compared with thermoelectric regenerative systems in related technologies, this invention proposes an integrated design scheme that deeply integrates the thermoelectric conversion module 210 with the corrugated regenerator structure. Related technologies mostly use planar thermoelectric conversion modules 210 attached to the heat source or set on the external structure of the flow channel, which not only has the problems of structural redundancy, long heat exchange path, and low temperature difference utilization, but also lacks stability in applications with heat flow disturbances or limited space.

[0077] This invention achieves simultaneous optimization of enhanced heat flow disturbance and module temperature difference-driven operation by embedding a thermoelectric conversion module 210 within the interface between hot and cold flows and constructing a corrugated channel using a variable parameter function. This effectively improves thermoelectric conversion efficiency and heat recovery capability. The compact design and high functional integration make it suitable for energy recovery systems operating under various high-temperature and hot-cold-fluid-intersection conditions, exhibiting excellent application scalability and engineering feasibility.

[0078] Specifically, this invention proposes a corrugated channel structure described by an adjustable parameter function. The corrugated channel structure is based on a waveform design of a variable parameter function. Compared with the traditional cosine / rectangular corrugation, it has stronger geometric adjustability, local thermal coupling adaptability and manufacturing feasibility, providing an optimized support interface for the embedded thermoelectric conversion module 210.

[0079] The thermoelectric conversion module 210 has a partitioned embedded integrated structure: The thermoelectric conversion module 210 and the corrugated plate channel are integrated through multi-segment clamping or embedding to form a stable contact surface between the hot and cold ends 211, avoiding the increase in thermal resistance or output power fluctuation caused by poor bonding of the module in the traditional structure.

[0080] The "hot end 211-regenerative-cold end 212" three-level thermal path coupling structure design: The device realizes thermal flow direction coupling of "high temperature fluid-thermoelectric conversion module 210-low temperature cooling channel" in the flow channel, which not only meets the regenerative efficiency, but also provides high temperature difference drive to enhance the power generation capacity of TEG.

[0081] A compact and integrated thermo-electric coupling device solution: This device combines heat recovery and power generation functions, avoiding the heat transfer efficiency loss and structural complexity problems caused by the separate arrangement of the heat recovery structure and thermoelectric conversion module 210 in the existing technology. It is suitable for system scenarios with limited space or complex heat flow characteristics.

[0082] Suitable for thermoelectric power generation applications of gas turbines or other lightweight high heat flux equipment: The structure of this invention not only has efficient heat exchange capacity, but also realizes waste heat power generation without significantly increasing system resistance. It is particularly suitable for energy systems with high requirements for weight and structural compactness in operating conditions such as gas turbines and aero-propulsion devices.

[0083] The above is a detailed description of the preferred embodiments of this disclosure. However, this disclosure is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this disclosure. All such equivalent modifications or substitutions are included within the scope defined by the claims of this disclosure.

Claims

1. A thermoelectric corrugated regenerator, characterized in that, include: The corrugated channel structure unit includes an upper corrugated plate and a lower corrugated plate, which are arranged in an alternating manner to form hot flow channels and cold flow channels. Thermoelectric power generation device includes multiple thermoelectric conversion modules. The thermoelectric conversion modules are embedded in the docking part of each hot flow channel and cold flow channel in the form of a plate module array. The upper and lower surfaces of the thermoelectric conversion modules are hot ends and are in contact with the hot flow channels. The left and right sides of the thermoelectric conversion modules are cold ends and exchange heat with the walls of the cold flow channels. The hot end contact surface of the thermoelectric conversion modules is equipped with a high thermal conductivity sheet, and the cold end side of the thermoelectric conversion modules is equipped with a thermally conductive ceramic or high thermal conductivity composite material gasket. The outer shell encapsulates the multiple corrugated channel structural units into a modular body.

2. The thermoelectric corrugated regenerator according to claim 1, characterized in that, The cold end of the thermoelectric conversion module is equipped with a composite gasket with high thermal conductivity and insulation.

3. The thermoelectric corrugated regenerator according to claim 1, characterized in that, The corrugated channel structure unit has an adjustable corrugated channel geometry configuration, which includes wave height, wave pitch, and waveform parameters that control the waveform shape.

4. The thermoelectric corrugated regenerator according to claim 1, characterized in that, The waveforms of the upper corrugated plate and the lower corrugated plate are adjustable asymmetric periodic curves designed based on a variable parameter function, the form of which is: in, The height of the corrugated curve at position x. The total height between the crests and troughs, P is the ripple period length, and i is the waveform number. is the position coordinate along the length of the channel, and N is the waveform parameter that controls the steepness and asymmetry of the waveform.

5. The thermoelectric corrugated regenerator according to claim 1, characterized in that, The upper corrugated plate and the lower corrugated plate are made of high-temperature alloy material, namely GH4169.

6. The thermoelectric corrugated regenerator according to claim 1, characterized in that, The upper and lower corrugated plates have pre-reserved module slots at their crests. The thermoelectric conversion module is embedded in the module slots, which are integrally formed by laser cutting or molding. The encapsulation structure of the thermoelectric conversion module uses brazing and ceramic insulation protection. The insulation thickness of the ceramic insulation protection is 0.5-1mm. The boundary of the thermoelectric conversion module and the surface of the upper and lower corrugated plates are sealed with high thermal conductivity insulating adhesive or brazing to achieve hermetical sealing and enhanced heat conduction.

7. A gas turbine, characterized in that, The device includes the thermoelectric power generation corrugated regenerator as described in any one of claims 1-6, wherein the thermoelectric power generation corrugated regenerator is installed in the exhaust gas path of the gas turbine, the cold flow channel of the thermoelectric power generation corrugated regenerator is connected to the compressor outlet of the gas turbine, and the hot flow channel of the thermoelectric power generation corrugated regenerator is connected to the turbine exhaust port of the gas turbine.

8. A gas turbine according to claim 7, characterized in that, The DC power output from the thermoelectric corrugated regenerator is used to power the sensors of the gas turbine, power auxiliary equipment, or connect to the power buffer unit of the turbine control system of the gas turbine.

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