CN213367662U - 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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- CN213367662U CN213367662U CN202022185508.7U CN202022185508U CN213367662U CN 213367662 U CN213367662 U CN 213367662U CN 202022185508 U CN202022185508 U CN 202022185508U CN 213367662 U CN213367662 U CN 213367662U
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Abstract
The utility model relates to an array DC power supply based on thermoelectric generation belongs to power equipment and nuclear energy application technology field. 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 utility model discloses heat conduction, adiabatic and the heat dissipation design among the power module can ensure that the module can utilize the heat source the most, reduces the heat waste, raises the efficiency.
Description
Technical Field
The utility model relates to an array DC power supply based on thermoelectric generation belongs to power equipment and nuclear energy application technology field.
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 utility model aims at providing an array DC power supply based on thermoelectric generation adopts and makes the thermoelectric generation piece according to the seebeck effect, utilizes the hot surface of heating power pipeline or equipment, produces the electric energy through the temperature difference in electricity generation piece cold junction and hot junction, as long as the heating power persists and just can continuously obtain required power.
The utility model provides an array DC power supply based on thermoelectric generation, including heating power pipeline or surface, installation cover and a plurality of array DC power supply module, the inner wall of installation cover be circular, the outer wall of installation cover is the polygon, the installation cover is adorned outside heating power pipeline through installation cover fixed ear cover; 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 utility model provides an array DC power supply based on thermoelectric generation, its advantage:
1. the utility model discloses an array DC power supply based on thermoelectric generation, monolithic thermoelectric generation piece wherein obtains singly organizing array DC power module after through the array combination, and this module can use in with the heating power surface more than the ambient temperature difference in temperature 25 ℃, the difference in temperature is big more power exportable power big more, generating efficiency is high more.
2. The utility model discloses an array DC power supply bulk power based on thermoelectric generation can be according to the voltage and the power size of required power, organizes a plurality of array DC power module combinations, installs on the installation basic unit of module-pipeline is the installation and sheathes in promptly, and heat conduction, adiabatic and the heat dissipation design among the power module can ensure that the module can utilize the heat source the most, reduces the heat waste, raises the efficiency.
3. The utility model discloses an array DC power supply based on thermoelectric generation, wherein singly organize array DC power module and adopt the modularized design, but as the basic power generation unit of power, but adopt quick assembly disassembly design, easy access and change. Therefore the utility model discloses the power can be used for nuclear power station and similar place, satisfies the requirement of the important parameter monitoring that lasts for a long time.
Drawings
Fig. 1 is the utility model provides an array dc power supply's based on thermoelectric generation's schematic structure.
Fig. 2 is a view a-a of fig. 1.
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 utility model provides an array DC power supply based on thermoelectric generation, its structure is shown in figure 1, including heating power pipeline 1, installation cover 3 and a plurality of array DC power supply module 4, the inner wall of installation cover 3 be circular, the outer wall of installation cover 3 is the polygon, installation cover 3 is in the outer of heating power pipeline 1 through the fixed ear 2 suit of installation cover; 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 combines the attached drawing, introduces in detail the utility model discloses array DC power supply's based on thermoelectric generation operating principle as follows:
the utility model discloses array DC power supply based on thermoelectric generation utilizes the thermoelectric generation piece of making according to the seebeck effect, the temperature difference through electricity generation piece cold junction (being cold side radiator 7) and hot junction (being heating power pipeline 1) produces the electric energy, through the parallelly connected design combination of electricity generation piece cluster obtain suitable voltage and power, heating power pipeline 1 and the hot surface laminating installation of power, make the heat generate electricity through the thermoelectric generation piece, as long as heating power persists and just can continuously obtain required power.
The utility model discloses array DC power supply's ability duration power supply time based on thermoelectric generation, it is relevant with the time that the heating power of power place among the thermodynamic system is continuous, for example, in modular high temperature gas cooled reactor, heat in the passive waste heat discharge pipe, a heat for deriving the reactor core conduction to the water-cooling wall, as long as the reactor core temperature does not reduce to cold shut down the reactor temperature, the heat will continuously derive, install thermoelectric generation array power on the waste heat pipe and will continuously produce electric power, satisfy required monitoring system's power demand, reduce to cold shut down the reactor temperature until the reactor core temperature, no longer have sufficient difference in temperature, the power withdraws from the operation, this moment the reactor is in the safe state and also no longer needs further monitoring. Therefore the utility model discloses the power can regard as the replenishment of other power supplies of power plant, even if like taking place similar good fortune island accident and lead to the whole alternating current-direct current power of power plant to lose, the utility model discloses the power also can continuously exist.
In one embodiment of the present invention, the passive waste heat discharge pipe of the modular high temperature gas cooled reactor is a carbon steel pipe with a diameter of 168 × 6mm, 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.
Applications Claiming Priority (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 |
| CN2020101104234 | 2020-02-24 |
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| CN213367662U true CN213367662U (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| Application Number | Title | Priority Date | Filing Date |
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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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN106368774B (en) * | 2016-09-08 | 2019-03-22 | 安徽工业大学 | A kind of wing plate heat exchange type tail gas electricity generating device of automobile |
| CN106953548B (en) * | 2017-05-10 | 2019-04-12 | 华中科技大学 | A kind of thermoelectricity gas furnace based on Seebeck effect and phase-change thermal storage |
| CN109113841B (en) * | 2018-08-28 | 2020-01-07 | 河北工业大学 | Self-service automobile exhaust treatment device |
| 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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- 2020-02-24 CN CN202010110423.4A patent/CN111224580A/en not_active Withdrawn
- 2020-09-29 CN CN202022185508.7U patent/CN213367662U/en active Active
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