CN111224580A - Array type direct-current power supply based on thermoelectric power generation - Google Patents
Array type direct-current power supply based on thermoelectric power generation Download PDFInfo
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- CN111224580A CN111224580A CN202010110423.4A CN202010110423A CN111224580A CN 111224580 A CN111224580 A CN 111224580A CN 202010110423 A CN202010110423 A CN 202010110423A CN 111224580 A CN111224580 A CN 111224580A
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Abstract
The invention relates to an array type direct current power supply based on thermoelectric power generation, and belongs to the technical field of power supply equipment and nuclear energy application. This thermoelectric generation array DC power supply includes heating power pipeline, installation cover and a plurality of array DC power supply module, and the inner wall of installation cover is circular, and the outer wall is the polygon, and a plurality of array DC power supply modules are fixed respectively on the polygon outer wall of installation cover. The array direct-current power supply module is formed by longitudinally arranging a plurality of direct-current power supply units and is arranged on a power generation piece mounting substrate, and the power generation piece mounting substrate is relatively fixed with the polygonal outer wall of the mounting sleeve. A single-chip temperature difference power generation sheet in the direct-current power supply unit is combined through an array to obtain a single-group array DC power supply module, the single-chip temperature difference power generation module can be used on a thermal surface with the temperature difference of 25 ℃ above the ambient temperature, the larger the temperature difference is, the larger the power supply output power is, and the higher the power generation efficiency is. The heat conduction, heat insulation and heat dissipation design in the power module can ensure that the module can maximally utilize a heat source, reduce heat loss and improve efficiency.
Description
Technical Field
The invention relates to an array type direct current power supply based on thermoelectric power generation, and belongs to the technical field of power supply equipment and nuclear energy application.
Background
For the power demand of accident monitoring in the construction of the nuclear power station which is newly started at present, a plurality of groups of storage battery power supplies which store energy for a long time, a power conversion device and a complete set of mobile diesel generating set power supply equipment are arranged, and the configuration equipment is high in manufacturing cost and high in operation and maintenance cost. For a nuclear power station which adopts a passive natural circulation mode to discharge waste heat, under the accident condition, the power station can be in a safe state and can lead out the waste heat without external power support, the monitoring of safety parameters of the nuclear power station after the accident is the key point, and the less power capacity supporting equipment which is needed at the time can be operated.
The thermoelectric power generation piece manufactured according to the Seebeck effect has the advantages of small volume, light weight, no moving part, long service life, high reliability, no pollution and the like, generates electric energy through the temperature difference of the cold end and the hot end of the power generation piece, can utilize various heating powers, and is energy-saving and environment-friendly. The thermoelectric generating sheets form an array to obtain a power supply with required voltage and capacity, and the duration of the power supply depends on the thermodynamic duration of the pipeline.
The power supply adopted by the monitoring system after the accident of the built or under-built nuclear power plant in China at present is a mode of matching a UPS (uninterrupted power supply) with a storage battery pack, such as a Qinshan nuclear power plant, a Bay nuclear power plant in the great Asia, a gulf nuclear power plant in the field, a gulf nuclear power plant in the Shandong Shidao and the like. The principle is that when a normal power supply loses power, a storage battery pack discharges through a UPS to provide power supply required by a post-accident monitoring system. The disadvantage of this approach is that the time for monitoring the system operation after an accident is entirely determined by the capacity of the battery pack. And the monitoring system after the nuclear power plant accident has long running time, a large-capacity storage battery pack needs to be configured, so that on one hand, large capital pressure is brought, and in addition, high requirements on the occupied area of equipment and high requirements on installation and maintenance are brought.
Disclosure of Invention
The invention aims to provide an array type direct current power supply based on thermoelectric power generation, wherein thermoelectric power generation sheets are manufactured according to the Seebeck effect, electric energy is generated through the temperature difference between the cold end and the hot end of the power generation sheets by utilizing the hot surface of a heat pipeline or equipment, and the required power supply can be continuously obtained as long as heat is continuously stored.
The invention provides an array type direct current power supply based on thermoelectric generation, which comprises a thermal pipeline or surface, an installation sleeve and a plurality of array direct current power supply modules, wherein the inner wall of the installation sleeve is circular, the outer wall of the installation sleeve is polygonal, and the installation sleeve is sleeved outside the thermal pipeline through an installation sleeve fixing lug; the plurality of array direct-current power supply modules are respectively fixed on the polygonal outer wall of the mounting sleeve; the array direct-current power supply module is formed by longitudinally arranging a plurality of direct-current power supply units, the direct-current power supply units are arranged on a power generation sheet mounting substrate, the power generation sheet mounting substrate and the polygonal outer wall of the mounting sleeve are relatively fixed, an insulating and heat-insulating plate is arranged between the longitudinally arranged direct-current power supply units, and power supply leading-out terminals are arranged at the lower parts of the longitudinally arranged direct-current power supply units; every DC power supply unit comprises electricity generation piece fixed plate, thermoelectric generation piece and cold side radiator, electricity generation piece fixed plate pass through screw and electricity generation piece mounting substrate relatively fixed, electricity generation piece fixed plate is square frame shape, a plurality of square frames on electricity generation piece fixed plate are installed to a plurality of thermoelectric generation pieces in, cold side radiator hug closely on square frame shape electricity generation piece fixed plate, every thermoelectric generation piece is continuous through the power derivation terminal of wire with this DC power supply unit lower part respectively.
The array type direct current power supply based on thermoelectric generation has the advantages that:
1. according to the array type direct current power supply based on thermoelectric generation, a single thermoelectric generation sheet is combined through an array to obtain a single array DC power supply module, the single array DC power supply module can be used on a thermal surface with the temperature difference of 25 ℃ above the ambient temperature, the larger the temperature difference is, the larger the power supply output power is, and the higher the power generation efficiency is.
2. According to the array type direct current power supply overall power supply based on the thermoelectric power generation, a plurality of single-group array DC power supply modules can be combined and installed on the installation base part of the module-pipeline, namely the installation sleeve, according to the voltage and the power of the required power supply, and the heat conduction, the heat insulation and the heat dissipation design in the power supply modules can ensure that the modules can utilize heat sources to the maximum extent, reduce heat loss and improve efficiency.
3. According to the array type direct current power supply based on thermoelectric power generation, the single-group array DC power supply module adopts a modular design, is used as a basic power generation unit of the power supply, adopts a design capable of being quickly disassembled and assembled, and is convenient to overhaul and replace. Therefore, the power supply can be used in nuclear power stations and similar places, and meets the requirement of long-term continuous monitoring of important parameters.
Drawings
Fig. 1 is a schematic structural diagram of an array type dc power supply based on thermoelectric power generation according to the present invention.
3 fig. 3 2 3 is 3a 3 view 3a 3- 3a 3 of 3 fig. 3 1 3. 3
Fig. 3 is a schematic diagram of a positional relationship among the power generation sheet mounting plate 8, the thermoelectric power generation sheet 9 and the power generation sheet mounting substrate 10 in the thermoelectric power generation-based array dc power supply shown in fig. 1.
In fig. 1-3, 1 is a heat pipe, 2 is a fixing lug of a mounting sleeve, 3 is a mounting sleeve, 4 is an array direct current power supply module, 5 is an insulating thermal baffle, 6 is a power supply leading-out terminal, 7 is a cold surface radiator, 8 is a power generation sheet fixing plate, 9 is a thermoelectric power generation sheet, and 10 is a power generation sheet mounting substrate.
Detailed Description
The structure of the array type direct-current power supply based on thermoelectric power generation is shown in figure 1, and the array type direct-current power supply comprises a thermal pipeline 1, an installation sleeve 3 and a plurality of array direct-current power supply modules 4, wherein the inner wall of the installation sleeve 3 is circular, the outer wall of the installation sleeve 3 is polygonal, and the installation sleeve 3 is sleeved outside the thermal pipeline 1 through an installation sleeve fixing lug 2; the plurality of array direct current power supply modules 4 are respectively fixed on the polygonal outer wall of the mounting sleeve 3.
The structure of the array direct-current power supply module 4 in the array direct-current power supply based on thermoelectric power generation is shown in fig. 2, and the array direct-current power supply module is formed by longitudinally arranging a plurality of direct-current power supply units, the direct-current power supply units are installed on a power generation sheet installation substrate 10, the power generation sheet installation substrate 10 and the polygonal outer wall of an installation sleeve 3 are relatively fixed, an insulating and heat-insulating plate 5 is arranged between the longitudinally arranged direct-current power supply units, and a power supply lead-out terminal 6 is arranged at the lower part of the longitudinally arranged direct-current power supply units; every DC power supply unit comprises electricity generation piece fixed plate 8, thermoelectric generation piece 9 and cold side radiator 7, electricity generation piece fixed plate 8 pass through the screw relatively fixed with electricity generation piece mounting substrate 10 through the screw, electricity generation piece fixed plate 8 is the square frame shape, a plurality of square frames on electricity generation piece fixed plate 8 are installed to a plurality of thermoelectric generation pieces 9 in, as shown in fig. 3, cold side radiator 7 hug closely on square frame shape electricity generation piece fixed plate 8, every thermoelectric generation piece 9 is continuous with this DC power supply unit lower part's power derivation terminal 6 through wire (not shown in the figure) respectively.
The following describes the working principle of the thermoelectric generation based array type dc power supply in detail with reference to the accompanying drawings:
the array direct-current power supply based on thermoelectric generation utilizes thermoelectric generation sheets manufactured according to the Seebeck effect, generates electric energy through the temperature difference between the cold end (namely a cold surface radiator 7) and the hot end (namely a heat distribution pipeline 1) of the power generation sheets, obtains proper voltage and power through series-parallel connection design combination of the power generation sheets, is installed by attaching the heat distribution pipeline 1 to the hot surface of the power supply, enables heat to generate electricity through the thermoelectric generation sheets, and can continuously obtain the required power supply as long as heat is continuously stored.
The invention relates to the sustainable power supply time of an array type direct current power supply based on thermoelectric power generation, which is related to the duration time of heat in a thermodynamic system in which a power supply is positioned, for example, in a modular high-temperature gas cooled reactor, heat in a passive waste heat discharge pipeline is used for guiding out heat conducted to a water wall by a reactor core, the heat can be continuously guided out as long as the temperature of the reactor core is not reduced to a cold shutdown temperature, the thermoelectric power generation array power supply arranged on a waste heat guide pipe can continuously generate electric power to meet the power demand of a system to be monitored, and the power supply is not in enough temperature difference until the temperature of the reactor core is reduced to the cold shutdown temperature, and the power supply is stopped from running, so that the reactor is in a safe state and does not need. Therefore, the power supply can be used as a supplement for other power supplies of a power plant, and even if all the AC/DC power supplies of the power plant are lost due to the occurrence of similar Fudao accidents, the power supply can also exist continuously.
In one embodiment of the invention, the passive waste heat discharge pipeline of the modular high-temperature gas cooled reactor is a phi 168 multiplied by 6mm carbon steel pipe, and the design pressure is 1.0 MPa. The operation pressure is 0.3MPa, the water temperature in the pipeline under the normal working condition and the accident working condition is 68.5-110 ℃, the environmental temperature of the pipeline is 14-28 ℃, the temperature can slowly reach the environmental temperature of the external area (33.5 ℃ summer extreme meteorology) after the ventilation of the air conditioner is lost, the minimum temperature difference between the pipeline and the environment is 35 ℃ (the normal working condition, the hottest summer and the ventilation-free air conditioner), the normal temperature difference during the operation is 40.5 ℃, and the normal temperature difference during the accident is 82 ℃. The device power maximum demand DC24V, 10A is monitored after an accident.
Aiming at the requirements, firstly, a single-group array DC12V power supply module is determined to be adopted, the power supply module is determined according to the size, the voltage-temperature difference characteristic and the current-temperature difference characteristic of the selected thermoelectric generation piece, 20 pieces of power generation piece mounting substrates are arranged, and every 10 pieces of power generation pieces are connected in series to form two DC12V power supplies. The amplitude voltage generated by each power module in the expected variation range of normal operation temperature difference is about in the range of DC 8-20V, the current is between 0.2-0.5A, and as shown in the figure, the module comprises: the power generation device comprises a power generation piece mounting substrate, a thermoelectric power generation piece, an insulating heat insulation plate, a cold surface radiator, a termination and lead-out area and the like. In this embodiment, the thermoelectric generation chip 9 is manufactured by zhejiang mengli electronic technology, and the model is TEG series. The cold surface radiator 2 is produced by Hebei Guantai, and the product is customized according to the requirements of the embodiment.
The pipe installation base component, namely the installation sleeve 3, is used for installing the single-group array DC12V power supply module and installing the single-group array DC12V power supply module in a fit mode with a thermal pipeline. The mounting sleeve 3 is formed by splicing two hollow symmetrical bodies, the cross section of the spliced mounting sleeve 3 is in an inner circle and outer regular hexagon shape, the inner surface circular arc shown in figure 2 is attached to the outer surface of a phi 168x6mm carbon steel pipe of the waste heat discharge pipeline, the cross section of the spliced mounting sleeve 3 is in a regular hexagon shape, and the size of each side is matched with the side-by-side longitudinal mounting size of the two power generation piece mounting substrates 10. The two hollow symmetrical bodies of the mounting sleeve 3 are fixed by bolts through the mounting lugs 2 and are attached to the pipeline. The outer edge regular hexagon design can achieve the optimal proportion of the weight of equipment and the installation number which are added to the installation pipeline for the size of the pipeline. The outer surface of a mounting sleeve 3 can be provided with 6 power supply modules (12 groups of DC12V power supplies), and the combined DC12V power supply can provide 3A current at the minimum temperature difference of 35 ℃. After the single-group array DC12V power module is mounted on the pipe mounting component, the whole exposed metal surface except the radiating fins is subjected to heat insulation treatment.
Finally, a plurality of single-group array DC12V power supply modules are arranged on the heat source pipeline, and the required power supply can be obtained through series-parallel connection combination. For the DC24V, 10A power supply required for the embodiment engineering, 4 sets may need to be installed to meet the power supply requirements. The vertical height of the waste heat pipeline is about 20 meters, the waste heat pipeline penetrates through a plurality of floors respectively, the length of each installation part is only 0.6 meter, and the installation position is sufficient. The single-group array DC power supply module transmits the generated power to an external power supply control protection module far away from a heat source through a power supply lead-out terminal 6 through a cable.
The power control protection module is installed far away from the heat distribution pipeline and is connected with each single-group array DC12V power module installed on the module-pipeline installation base part through cables. The single-group array DC12V power supply module has the functions of realizing DC/DC voltage stabilization, isolation and protection of the single-group array DC12V power supply module and realizing DC12V single-module voltage stabilization output; secondly, voltage, power combination and inter-group protection of 12 groups of power modules in one power supply device are realized, and DC24V and 3A power output are realized; and thirdly, combining and controlling the power supply voltage of 4 sets of power supply devices to form the finally required DC24V and 10A power supply. By analogy, for a power supply with higher power, the power supply can be realized by the series-parallel combination of more thermoelectric generation array power supply equipment, and the output and protection of the power supply combination are also realized by the power supply control protection module.
Claims (1)
1. An array direct-current power supply based on thermoelectric power generation is characterized in that the thermoelectric power generation array direct-current power supply comprises a thermal pipeline, an installation sleeve and a plurality of array direct-current power supply modules, wherein the inner wall of the installation sleeve is circular, the outer wall of the installation sleeve is polygonal, and the installation sleeve is sleeved outside the thermal pipeline through an installation sleeve fixing lug; the plurality of array direct-current power supply modules are respectively fixed on the polygonal outer wall of the mounting sleeve; the array direct-current power supply module is formed by longitudinally arranging a plurality of direct-current power supply units, the direct-current power supply units are arranged on a power generation sheet mounting substrate, the power generation sheet mounting substrate and the polygonal outer wall of the mounting sleeve are relatively fixed, an insulating and heat-insulating plate is arranged between the longitudinally arranged direct-current power supply units, and power supply leading-out terminals are arranged at the lower parts of the longitudinally arranged direct-current power supply units; every DC power supply unit comprises electricity generation piece fixed plate, thermoelectric generation piece and cold side radiator, electricity generation piece fixed plate pass through screw and electricity generation piece mounting substrate relatively fixed, electricity generation piece fixed plate is square frame shape, a plurality of square frames on electricity generation piece fixed plate are installed to a plurality of thermoelectric generation pieces in, cold side radiator hug closely on square frame shape electricity generation piece fixed plate, every thermoelectric generation piece is continuous through the power derivation terminal of wire with this DC power supply unit lower part respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110423.4A CN111224580A (en) | 2020-02-24 | 2020-02-24 | Array type direct-current power supply based on thermoelectric power generation |
| CN202022185508.7U CN213367662U (en) | 2020-02-24 | 2020-09-29 | Array type direct-current power supply based on thermoelectric power generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010110423.4A CN111224580A (en) | 2020-02-24 | 2020-02-24 | Array type direct-current power supply based on thermoelectric power generation |
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| CN111224580A true CN111224580A (en) | 2020-06-02 |
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| CN202010110423.4A Withdrawn CN111224580A (en) | 2020-02-24 | 2020-02-24 | Array type direct-current power supply based on thermoelectric power generation |
| CN202022185508.7U Active CN213367662U (en) | 2020-02-24 | 2020-09-29 | Array type direct-current power supply based on thermoelectric power generation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468020A (en) * | 2020-12-11 | 2021-03-09 | 沈阳工程学院 | Detachable combined small and medium semiconductor thermoelectric generator |
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| CN205792308U (en) * | 2016-05-27 | 2016-12-07 | 浙江聚珖科技股份有限公司 | Condenser thermal source temperature difference electricity generation device |
| CN106368774A (en) * | 2016-09-08 | 2017-02-01 | 安徽工业大学 | Flange plate heat exchange type automobile tail gas power generation device |
| CN106953548A (en) * | 2017-05-10 | 2017-07-14 | 华中科技大学 | A kind of thermoelectricity gas furnace based on Seebeck effect and phase-change thermal storage |
| CN109113841A (en) * | 2018-08-28 | 2019-01-01 | 河北工业大学 | A kind of service automobile exhaust gas processing apparatus certainly |
| CN208820705U (en) * | 2018-10-29 | 2019-05-03 | 河南北宋官窑文化传播股份有限公司 | A kind of electricity generation system using residual heat from kiln furnace |
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2020
- 2020-02-24 CN CN202010110423.4A patent/CN111224580A/en not_active Withdrawn
- 2020-09-29 CN CN202022185508.7U patent/CN213367662U/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205792308U (en) * | 2016-05-27 | 2016-12-07 | 浙江聚珖科技股份有限公司 | Condenser thermal source temperature difference electricity generation device |
| CN106368774A (en) * | 2016-09-08 | 2017-02-01 | 安徽工业大学 | Flange plate heat exchange type automobile tail gas power generation device |
| CN106953548A (en) * | 2017-05-10 | 2017-07-14 | 华中科技大学 | A kind of thermoelectricity gas furnace based on Seebeck effect and phase-change thermal storage |
| CN109113841A (en) * | 2018-08-28 | 2019-01-01 | 河北工业大学 | A kind of service automobile exhaust gas processing apparatus certainly |
| CN208820705U (en) * | 2018-10-29 | 2019-05-03 | 河南北宋官窑文化传播股份有限公司 | A kind of electricity generation system using residual heat from kiln furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468020A (en) * | 2020-12-11 | 2021-03-09 | 沈阳工程学院 | Detachable combined small and medium semiconductor thermoelectric generator |
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| CN213367662U (en) | 2021-06-04 |
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Application publication date: 20200602 |