Power generation device based on pipeline waste heat

Abstract

A power generation device based on pipeline waste heat provided by the present invention comprises a conversion unit and a power storage unit, the conversion unit comprises a heat dissipation part, a thermoelectric power generation part and a heat collection part, and the heat collection part is connected with a pipeline to transfer the pipeline waste heat to a hot end of the thermoelectric power generation part. The heat dissipation part is connected with the pipeline to reduce the cold end temperature of the thermoelectric power generation part and form a temperature difference with the hot end; and the power storage unit is connected with the thermoelectric power generation part so as to store the electric energy generated by the thermoelectric power generation part and supply the electric energy to required equipment. Heat generated by a heat carrier in the pipeline can be recycled and efficiently utilized for power supply through the thermoelectric power generation technology. The device has the beneficial effects of being small in structure occupied space, suitable for a complex pipeline installation environment, capable of being self-sustaining, capable of guaranteeing the manufacturing cost, high in reliability, free of maintenance and convenient to apply and popularize.

Description

Technical Field

[0001] The present invention belongs to the technical field of temperature difference power generation, and in particular relates to a power generation device based on pipeline waste heat. Background Art

[0002] In the existing technology, the thermoelectric power generation device is a device that uses the Seebeck effect to directly convert thermal energy into electrical energy. It has the advantages of light weight, static, and maintenance-free. The thermoelectric power generation device currently used in engineering is the isotope thermoelectric battery, which uses an isotope nuclear source as a heat source and is usually used for the combined heat and power supply of electrical loads in deep space environments; in non-nuclear application fields, such as automobile exhaust waste heat recovery, nuclear power plant pipeline loop waste heat utilization, etc., the application environment is changeable and complex, and some installation spaces and costs are limited, making it difficult to achieve engineering applications. There are technical problems such as non-nuclear application fields, especially the coupling application of pipeline heat sources and thermoelectric power generation devices, which are difficult to achieve engineering applications due to the influence of the environment, space, cost, etc. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a power generation device based on pipeline waste heat, which is particularly suitable for applications in pipeline environments with small installation space, and has high reliability, is maintenance-free, and is self-sustaining.

[0004] The technical solution adopted by the present invention is: a power generation device based on pipeline waste heat, including: a conversion unit, which includes a heat dissipation part, a temperature difference power generation part and a heat collection part, the heat collection part is connected to the pipeline to transfer the pipeline waste heat to the hot end of the temperature difference power generation part, the heat dissipation part is connected to the pipeline to reduce the temperature of the cold end of the temperature difference power generation part and form a temperature difference with the hot end; a power storage unit, which is connected to the temperature difference power generation part to store the electric energy generated by the temperature difference power generation part and supply it to the required equipment.

[0005] Furthermore, the power storage unit includes a battery and a battery insulation part, the battery is connected to the temperature difference power generation part, and the battery insulation part is arranged between the battery and the pipeline.

[0006] Furthermore, the heat collecting part and / or the battery heat insulating part has a curved surface facing the pipeline so as to fit with the pipeline.

[0007] Furthermore, the power storage unit also includes a wire, the temperature difference power generation part is connected to the battery through the wire for charging, and the heat collection part and / or the battery insulation part are provided with a wire groove to accommodate the wire.

[0008] Furthermore, it also includes a packaging body connected to the pipeline, the heat collecting part and the temperature difference power generation part are both arranged in the packaging body, and the heat dissipation part is installed on the packaging body.

[0009] Furthermore, the power storage unit is arranged in a packaging body, which includes a first packaging shell for packaging the power storage unit and a second packaging shell that can be connected to the first packaging shell to be sleeved outside the pipeline, the second packaging shell is used to package the heat collection part and the temperature difference power generation part, and the heat dissipation part is installed in the second packaging shell.

[0010] Furthermore, the heat dissipation part includes a heat dissipation fin assembly, and the heat dissipation fin assembly is installed on the packaging body.

[0011] Furthermore, the heat dissipation part also includes a conductive part and a heat insulating part. The conductive part is arranged between the cold end of the temperature difference power generation part and the heat dissipation fin assembly to transfer heat. The heat insulating part is penetrated to open an installation hole to accommodate the conductive part and the temperature difference power generation part.

[0012] The advantages and positive effects of the present invention are as follows: due to the adoption of the above technical scheme, the heat generated by the heat carrier in the pipeline can be recovered and efficiently utilized to generate electricity through the temperature difference power generation technology; the structure occupies a small space, can be applied to complex pipeline installation environments, can be self-sustaining, can guarantee costs, has high reliability, is maintenance-free, and is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0014] Figure 2 It is a schematic diagram of the structural disassembly of an embodiment of the present invention;

[0015] In the figure:

[0016] 1. Pipeline 2. Temperature difference power generation unit 3. Heat collection unit

[0017] 4. Battery 5. Battery insulation 6. Conducting parts

[0018] 7. Heat dissipation fin assembly 8. Heat insulation member 9. First packaging shell

[0019] 10. Second packaging shell 11. Output pole DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described below in conjunction with the drawings. The described embodiments are only a part of the embodiments of the invention, rather than all the embodiments.

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0022] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, and may refer to direct connection, installation or fixation, or indirect connection, installation or fixation, and the present invention does not limit this.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] like Figure 1 to Figure 2 As shown, a schematic diagram of an embodiment of a power generation device based on waste heat of a pipeline of the present invention includes a conversion unit, which includes a heat dissipation part, a thermoelectric power generation part 2 and a heat collection part 3. The heat collection part 3 is connected to the pipeline 1 to transfer the waste heat of the pipeline 1 to the hot end of the thermoelectric power generation part 2. The heat dissipation part is also connected to the pipeline 1 to reduce the temperature of the cold end of the thermoelectric power generation part 2 and form a temperature difference with the hot end; the power storage unit is connected to the thermoelectric power generation part 2 to store the electric energy generated by the thermoelectric power generation part 2 and supply it to the required equipment. In this embodiment, the heat generated by the heat carrier in the pipeline 1 can be converted into electric energy through the thermoelectric power generation technology. The heat carrier can be gaseous or liquid, such as exhaust gas, water, etc., and cooperate with the power storage unit to realize self-sustaining power supply to sensors, instruments, etc.

[0025] In this embodiment, the power storage unit includes a battery 4 and a battery insulation part 5 . The battery 4 is arranged outside the pipeline 1 and connected to the temperature difference power generation part 2 . The battery insulation part 5 is arranged between the battery 4 and the pipeline 1 .

[0026] In different embodiments, the heat collecting part 3 and / or the battery heat insulating part 5 are curved on the side facing the pipe 1 to fit with the pipe 1. In this embodiment, the heat collecting part 3 and the battery heat insulating part 5 are curved and semicircular on the side facing the pipe 1. The heat collecting part 3 and the battery heat insulating part 5 can not only fit with the pipe 1, but also be spliced ​​with each other to be tightly sleeved outside the pipe 1. The structural design of the mutual insertion of various components can not only better ensure the stability of the installation and use process, but also reduce the overall space occupied by the power generation device, and better adapt to various pipeline installation environments; the structure that can be spliced ​​to be sleeved outside the pipe 1 can ensure that different installers can quickly and accurately install outside the pipe 1, ensuring the installation quality and use effect.

[0027] In this embodiment, the power storage unit further includes a wire, and the temperature difference power generation unit 2 is connected to the battery 4 through the wire for charging. In different embodiments, the heat collection unit 3 and / or the battery insulation unit 5 are provided with a wire groove to accommodate the wire. In this embodiment, both the heat collection unit 3 and the battery insulation unit 5 are provided with a wire groove to accommodate the wire.

[0028] In this embodiment, a packaging body connected to the pipeline 1 is also included, the heat collecting part 3 and the temperature difference power generation part 2 are both arranged in the packaging body, and the heat dissipation part is installed on the packaging body.

[0029] In this embodiment, the storage unit is also arranged in the package body, and an output pole 11 is arranged outside the package body for electrically connecting to the power load. The package body includes a first package shell 9 for packaging the storage unit and a second package shell 10 that can be connected to the first package shell 9 to be sleeved outside the pipeline 1. The second package shell 10 is used to package the heat collection part 3 and the temperature difference power generation part 2, and the heat dissipation part is installed in the second package shell 10. In this embodiment, after the installation of each component is completed, the first package shell 9 and the second package shell 10 are spliced ​​for overall packaging. The two can be connected by a mechanical structure. The mechanical structure connection is a prior art and is not described in the present invention. In this embodiment, the first package shell 9 is arranged at the lower part of the pipeline 1, and the second package shell 10 is arranged at the upper part of the pipeline 1; in other embodiments, the installation position of each component relative to the pipeline 1 can be adaptively adjusted based on the installation environment, etc. In this embodiment, the first package shell 9 is provided with an output pole 11 so as to be connected to the output pole of the battery 4 to power the required equipment. The packaging structure can better protect the components of the power generation device to extend the service life and reduce the hidden dangers of damage by the external environment; the output pole 11 arranged outside the packaging body can conveniently supply power to the required equipment, which is easy to use and easy to promote.

[0030] In this embodiment, the heat dissipation part includes a heat dissipation fin assembly 7, and the heat dissipation fin assembly 7 is installed on the upper end surface of the package body. In this embodiment, the cold end temperature is reduced by installing the heat dissipation fin assembly 7 on the package body, and the structural space is fully utilized. Compared with traditional fan heat dissipation, the heat dissipation area can be increased, so that heat is transferred to the surrounding environment more quickly, thereby improving the heat dissipation efficiency; the structure is compact and the noise is low, which can be applied to various installation environments, occupies a small space, and can better achieve the temperature difference between the cold and hot ends of the temperature difference power generation part 2 and ensure the output performance.

[0031] In this embodiment, the heat dissipation part also includes a conductive member 6, which is arranged between the cold end of the thermoelectric power generation part 2 and the heat dissipation fin assembly 7 to transfer heat. In this embodiment, heat insulation material is arranged outside the conductive member 6 and the thermoelectric power generation part 2. Further, the heat dissipation part also includes a heat insulation member 8 made of heat insulation material. The heat insulation member 8 can contact the heat collecting part 3 and the heat insulation member 8 is penetrated to open a mounting hole to accommodate the conductive member 6 and the thermoelectric power generation part 2. In this embodiment, the heat dissipation fin assembly 7 is installed on the upper end surface of the second packaging shell 10. The heat insulation member 8 can reduce heat leakage of the system, ensure the waste heat absorption effect of the hot end surface of the thermoelectric power generation part 2, and improve the heat utilization rate; through the cooperation of the conductive member 6 and the heat dissipation fin assembly 7, the heat of the cold end can be transferred to the external environment, which is conducive to establishing a temperature difference between the cold and hot ends of the thermoelectric power generation part 2, thereby improving the output performance of the thermoelectric power generation part 2.

[0032] In this embodiment, the thermoelectric power generation unit 2 includes a thermoelectric power generation device, which is composed of a ceramic substrate and a plurality of electrically connected thermoelectric single pairs (PN junctions), the hot end face of which is in contact with the heat collection unit 3, and the cold end face is in contact with the conductive member 6. When applied, a matching thermoelectric material is selected according to the wall temperature of the pipeline 1. The output voltage of the thermoelectric power generation device should be greater than the working voltage of the energy storage battery 4 to achieve effective charging of the energy storage battery 4. The heat collection unit 3 includes a heat collector, which is made of a material with high thermal conductivity. The lower end face of the heat collector is designed to be a semicircular end face adapted to the shape of the pipeline 1 to fit each other, and the curvature is the same as the outer wall of the pipeline 1 to be clamped on the outer wall of the pipeline 1, which can not only improve the fixing stability, but also reduce the occupied space resources; the upper end face of the heat collector is provided with an installation groove to place the thermoelectric power generation device. The upper end face of the battery insulation unit 5 is also a semicircular end face adapted to the pipeline 1, and the curvature is the same as the outer wall of the pipeline 1 to be clamped on the outer wall of the pipeline 1; the lower end face of the battery insulation unit 5 is also provided with an installation groove to place the battery 4. The conductive member 6 is made of metal material with high flatness and surface finish, and is in contact with the cold end of the thermoelectric generator part 2 to transfer heat. In this embodiment, the battery insulation part 5 is made of aerogel material with excellent supporting performance and thermal insulation performance. The battery insulation part 5 accommodates the energy storage battery 4, which can prevent the output performance of the battery 4 from being reduced due to the wall temperature of the pipeline 1, thereby ensuring the service life of the battery 4. The battery 4 can be a lithium-ion battery, which is connected to the thermoelectric generator through a wire to realize the charging function. The output pole of the battery 4 is connected to the output pole 11 of the first packaging shell 9 provided at the lower part of the pipeline 1 to realize the power supply to the electrical load.

[0033] The working process of this embodiment is as follows:

[0034] When no heat carrier passes through the pipeline 1, the battery 4 is used to power electrical loads such as sensors and instruments; when a heat carrier passes through the pipeline 1, the temperature difference power generation device in the temperature difference power generation unit 2 can convert the heat absorbed at the pipeline into electrical energy to charge the battery 4. The present invention has the advantages of maintenance-free, high reliability and self-sustaining.

[0035] The present invention adopts a heat collecting part 3, a battery insulation part 5, a first packaging shell 9 and a second packaging shell 10 designed to follow the shape of the pipeline. The structure designed to be interlocked can be suitable for space-constrained or complex pipeline installation environments; the temperature difference power generation part 2 is encapsulated on the outer wall of the pipeline 1, which not only has a high heat utilization rate, but also can ensure the safety and stability of the use process through the packaging design; the present invention has a simple structure, which can not only meet the coupling application requirements of the pipeline heat source and the temperature difference power generation device, but also ensure the production cost, and the structure occupies a small space, which can realize engineering application and promotion in non-nuclear application fields.

[0036] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A power generation device based on pipeline waste heat, characterized in that: include: A conversion unit, comprising a heat dissipation part, a temperature difference power generation part and a heat collection part, wherein the heat collection part is connected to the pipeline to transfer the waste heat of the pipeline to the hot end of the temperature difference power generation part, and the heat dissipation part is connected to the pipeline to reduce the temperature of the cold end of the temperature difference power generation part and form a temperature difference with the hot end; The power storage unit is connected to the temperature difference power generation unit to store the electric energy generated by the temperature difference power generation unit and supply the electric energy to necessary equipment.

2. The power generation device based on pipeline waste heat according to claim 1 is characterized in that: The power storage unit includes a battery and a battery heat insulating portion. The battery is connected to the temperature difference power generation portion. The battery heat insulating portion is provided between the battery and the pipe.

3. The power generation device based on pipeline waste heat according to claim 2 is characterized in that: The heat collecting portion and / or the battery heat insulating portion has a curved surface facing the pipeline so as to be embedded with the pipeline.

4. The power generation device based on pipeline waste heat according to claim 2 is characterized in that: The power storage unit further includes a wire, through which the temperature difference power generation unit is connected to the battery for charging, and a wire groove is provided in the heat collection unit and / or the battery heat insulation unit to accommodate the wire.

5. The power generation device based on pipeline waste heat according to any one of claims 1 to 4, characterized in that: It also includes a packaging body connected to the pipeline, the heat collecting part and the temperature difference power generation part are both arranged in the packaging body, and the heat dissipation part is installed on the packaging body.

6. The power generation device based on pipeline waste heat according to claim 5 is characterized in that: The power storage unit is arranged in the packaging body, and the packaging body includes a first packaging shell for packaging the power storage unit and a second packaging shell that can be connected to the first packaging shell to be sleeved outside the pipeline, the second packaging shell is used to package the heat collection part and the temperature difference power generation part, and the heat dissipation part is installed in the second packaging shell.

7. The power generation device based on pipeline waste heat according to claim 5 is characterized in that: The heat dissipation portion includes a heat dissipation fin assembly, and the heat dissipation fin assembly is mounted on the packaging body.

8. The power generation device based on pipeline waste heat according to claim 7 is characterized in that: The heat dissipation part also includes a conductive part and a heat insulating part. The conductive part is arranged between the cold end of the temperature difference power generation part and the heat dissipation fin assembly to transfer heat. The heat insulating part is penetrated to form a mounting hole to accommodate the conductive part and the temperature difference power generation part.

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