CN105703665A - Thermoelectric power generation energy storage and power transmission system applied to air pre-heater of boiler - Google Patents
Thermoelectric power generation energy storage and power transmission system applied to air pre-heater of boiler Download PDFInfo
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- CN105703665A CN105703665A CN201610212778.8A CN201610212778A CN105703665A CN 105703665 A CN105703665 A CN 105703665A CN 201610212778 A CN201610212778 A CN 201610212778A CN 105703665 A CN105703665 A CN 105703665A
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- energy storage
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- air preheater
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- boiler
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
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Abstract
The invention relates to a thermoelectric power generation energy storage and power transmission system applied to an air pre-heater of a boiler. The thermoelectric power generation energy storage and power transmission system comprises a thermoelectric power generation device, an energy storage device and a power transmission device, wherein the thermoelectric power generation device comprises a plurality of thermoelectric power generation units, the plurality of thermoelectric power generation units are connected with the energy storage device and the power transmission device separately through wires and are arranged in the air pre-heater of the boiler, hot ends of the thermoelectric power generation units are in contact with a flue gas pipe of the air pre-heater of the boiler, cold ends of the thermoelectric power generation units are in contact with air in the air pre-heater of the boiler, and the energy storage device and the power transmission device are arranged outside the boiler. Compared with the prior art, the thermoelectric power generation energy storage and power transmission system has the advantages that power generation efficiency, heat absorption rate and heat transfer rate are improved, high-voltage DC and AC are increased, and the system is fully utilized.
Description
Technical field
The present invention relates to augmentation of heat transfer and energy-conserving and emission-cutting technology field, especially relate to a kind of thermo-electric generation energy storage being applied to boiler air preheater and transmission system。
Background technology
Thermo-electric generation is to utilize Seebeck effect that the thermal energy that high temperature produces with the temperature difference of low temperature becomes electric energy, but the electric energy directly produced is DC voltage, if carried out energy storage, it is necessary to could store after voltage-stabilizing protector adjusts；If carried out transmission of electricity, it is necessary to could power after adjusting through inverter, voltage-stabilizing protector successively。
As it is shown in figure 5, figure is the structural representation that existing power plant generates electricity based on Rankine cycle principle。Traditional Fossil fuel usual efficiency in power generation process is very low, and in power plant's Rankine cycle, substantial amounts of energy loss is present in boiler part, is owing to the temperature difference between high-temperature flue-gas and high steam temperature causes。Because ignition temperature is up to about 1700 DEG C in modern coal-fired power station boiler Boiler Furnace, and High Temperature High Pressure heating surface temperature is typically in less than 600 DEG C, zones of different cigarette temperature in stove is high with the temperature difference of working medium in heating surface to more than 1000 DEG C, also the temperature difference of 100-200 DEG C is had in air preheater region, according to the second law of thermodynamics, the irreversible loss that heat transfer temperature difference more causes greatly is more bigDamaging more big, the economy of unit can be deteriorated。If heat transfer temperature difference can be used, just can efficiently reduce the energy loss in diabatic process, improve the efficiency of the thermal power plants based on Rankine cycle。
The how concrete energy as much as possible effectively obtaining above-mentioned loss, temperature difference electricity generation device hot junction can be connected on boiler air preheater fume pipe, cold end is exposed in the air in boiler air preheater, namely respectively as the boundary condition of hot side and cold side, utilize temperature difference to produce extra electric energy by thermo-electric conversion, reach the purpose of energy-saving and emission-reduction。
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide and a kind of improve generating efficiency, improve heat absorption rate, improve heat transfer efficiency, high voltage direct alternating current, the thermo-electric generation energy storage being applied to boiler furnace made full use of and transmission system are provided。
The purpose of the present invention can be achieved through the following technical solutions:
A kind of thermo-electric generation energy storage being applied to boiler air preheater and transmission system, including temperature difference electricity generation device, energy storage device and power transmitting device, described temperature difference electricity generation device includes multiple thermo-electric generation unit, described multiple thermo-electric generation unit are connected with energy storage device and power transmitting device respectively by wire, described temperature difference electricity generation device is arranged in boiler air preheater, and the hot junction of thermo-electric generation unit and the hot-fluid smoke contacts in boiler air preheater, cold end and the air contact in boiler air preheater, described energy storage device and power transmitting device are arranged on outside boiler；
When native system generates electricity, the energy that high-temperature flue gas in boiler air preheater fume pipe is produced by thermo-electric generation unit is as hot junction, using the air in boiler air preheater as cold end, utilize temperature difference to produce electric energy, and flowed to energy storage device and power transmitting device by wire。
Heat sink that described thermo-electric generation unit includes clamping successively, electrothermal module, absorber plate, described absorber plate contacts with boiler air preheater fume pipe, and described heat sink extend in the air in boiler air preheater。
Described thermo-electric generation unit also includes the fin or the heat pipe that are connected with heat sink。
Described energy storage device includes passing sequentially through energy storage pressure stabilizing protector, energy storage ammeter and the accumulator that wire connects, and described energy storage pressure stabilizing protector is connected with thermo-electric generation unit。
Described power transmitting device includes inverter, transmission of electricity voltage-stabilizing protector and transmission of electricity ammeter, and described thermo-electric generation unit, inverter, transmission of electricity voltage-stabilizing protector, transmission of electricity ammeter and electrical appliance pass sequentially through wire and connect。
Described multiple thermo-electric generation unit mode in parallel is connected with energy storage device and power transmitting device after connecting respectively again。
Compared with prior art, the invention have the advantages that
One, improve generating efficiency: radiation loss is excessive is the main cause of semiconductor temperature differential generating inefficiency, also it is the biggest obstacle hindering this Technique Popularizing, but for boiler, thermal insulation it is incubated reliably owing to it has, if compound temperature-difference power generation module on boiler heating surface, so the heat of result temperature-difference power generation module is except being converted into electric energy, after-heat passes to cold flow body, whole process does not have energy dissipation, the present invention adopts and installs temperature difference electricity generation device in boiler air preheater, utilize temperature difference higher between high-temperature flue-gas and air themperature, extra electric energy is produced by thermo-electric conversion, reduce substantial amounts of energy loss in Rankine cycle, improve the generating efficiency of power plant。
Two, heat absorption rate is improved: the present invention adds absorber plate by the hot junction at electrothermal module, heat sink is added at cold end, heat sink adds many group fins or heat pipe, add the contact area with air, rate of heat dissipation can be effectively improved, make due to the addition of temperature difference electricity generation device increase heat transfer resistance when, the minimal Rankine cycle affecting boiler self, thus Optimization of Energy Saving。
Three, heat transfer efficiency is improved: the present invention adds absorber plate by the hot junction at electrothermal module, heat sink is added at cold end, absorbed heat faster in hot junction, cold end dispels the heat faster, improve heat transfer efficiency, thus increasing the temperature difference of cold and hot end so that thermo-electric generation unit is actual produces bigger generated output。
Four, high voltage direct alternating current is provided: the electric energy that single thermo-electric generation unit directly produces is low-voltage direct, if some thermo-electric generation unit conductor in parallel are got up, not only can solve owing to single thermo-electric generation unit damages the impact on whole device, it is also possible to HVDC is provided；If carried out energy storage, store after voltage-stabilizing protector adjusts；If carried out transmission of electricity, power supply after inverter, voltage-stabilizing protector adjust successively。
Five, make full use of: the electric energy of generation is fully utilized by the present invention by arranging energy storage and transmission system, it is achieved the purpose of energy-saving and emission-reduction, creates higher economic worth。
Accompanying drawing explanation
Fig. 1 is the structural front view of temperature difference electricity generation device；
Fig. 2 is the structure top view of temperature difference electricity generation device；
Fig. 3 is the structure left view of temperature difference electricity generation device；
Fig. 4 is the system structure schematic diagram of the present invention。
Fig. 5 is the structural representation that existing power plant generates electricity based on Rankine cycle principle。
Wherein, 1, thermo-electric generation unit, 2, boiler air preheater; 3, wire, 4, air preheater fume pipe, 5, absorber plate; 6, electrothermal module, 7, heat sink, 8, fin or heat pipe; 9, temperature difference electricity generation device, 10, energy storage pressure stabilizing protector, 11, energy storage ammeter; 12, accumulator, 13, inverter, 14, transmission of electricity voltage-stabilizing protector; 15, transmission of electricity ammeter, 16, electrical appliance。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail。
Embodiment:
As Figure 1-4, a kind of thermo-electric generation energy storage being applied to boiler air preheater and transmission system, this system is arranged in boiler furnace, including temperature difference electricity generation device 9, energy storage device and power transmitting device, temperature difference electricity generation device 9 includes multiple thermo-electric generation unit 1, multiple thermo-electric generation unit 1 are connected with energy storage device and power transmitting device respectively by wire 3, and the hot junction of thermo-electric generation unit 1 contacts with boiler air preheater fume pipe, the air contact in cold end and boiler air preheater 2；
When native system generates electricity, the energy that high-temperature flue gas in boiler air preheater fume pipe is produced by thermo-electric generation unit 1 is as hot junction, using the air in boiler air preheater 2 as cold end, utilize temperature difference to produce electric energy, and flowed to energy storage device and power transmitting device by wire。
Absorber plate 5 that thermo-electric generation unit 1 includes clamping successively, electrothermal module 6, heat sink 7, absorber plate 5 contacts with the boiler air preheater fume pipe 4 in boiler air preheater 2。
Thermo-electric generation unit 1 also includes the fin or the heat pipe 8 that are connected with heat sink 7。
Energy storage device includes passing sequentially through energy storage pressure stabilizing protector 10, energy storage ammeter 11 and the accumulator 12 that wire connects, and energy storage pressure stabilizing protector 10 is connected with thermo-electric generation unit 1。
When native system carries out energy storage, what temperature difference electricity generation device 9 produced is high voltage direct current, is adjusted to suitable voltage through energy storage pressure stabilizing protector 10 successively, energy storage ammeter 11 display record electricity, is finally stored in accumulator 12。
Power transmitting device includes inverter 13, transmission of electricity voltage-stabilizing protector 14 and transmission of electricity ammeter 15, and thermo-electric generation unit 1, inverter 13, transmission of electricity voltage-stabilizing protector 14, transmission of electricity ammeter 15 and electrical appliance 16 pass sequentially through wire and connect。
When native system is transmitted electricity, what temperature difference electricity generation device 9 produced is high voltage direct current, is transformed into alternating current through inverter 13 successively, transmission of electricity voltage-stabilizing protector 14 adjusts and is combined into suitable voltage, and transmission of electricity ammeter 15 display record electricity, the most backward electrical appliance 16 is powered。
Claims (6)
1. the thermo-electric generation energy storage being applied to boiler air preheater and transmission system, it is characterized in that, including temperature difference electricity generation device (9), energy storage device and power transmitting device, described temperature difference electricity generation device (9) includes multiple thermo-electric generation unit (1), described multiple thermo-electric generation unit (1) are connected with energy storage device and power transmitting device respectively by wire (3), described temperature difference electricity generation device (9) is arranged in boiler air preheater (2), and the hot junction of thermo-electric generation unit (1) contacts with boiler air preheater fume pipe, cold end and the air contact in boiler air preheater (2), described energy storage device and power transmitting device are arranged on outside boiler；
When native system generates electricity, the energy that high-temperature flue gas in boiler air preheater fume pipe is produced by thermo-electric generation unit (1) is as hot junction, using the air in boiler air preheater (2) as cold end, utilize temperature difference to produce electric energy, and flowed to energy storage device and power transmitting device by wire。
2. a kind of thermo-electric generation energy storage being applied to boiler air preheater according to claim 1 and transmission system, it is characterized in that, heat sink (5) that described thermo-electric generation unit (1) includes clamping successively, electrothermal module (6), absorber plate (5), described absorber plate (5) contacts with the air preheater fume pipe (4) in air preheater (2), and described heat sink (7) extend in the air of boiler air preheater。
3. a kind of thermo-electric generation energy storage being applied to boiler air preheater according to claim 2 and transmission system, it is characterised in that described thermo-electric generation unit (1) also includes the fin or the heat pipe (8) that are connected with heat sink (7)。
4. a kind of thermo-electric generation energy storage being applied to boiler air preheater according to claim 1 and transmission system; it is characterized in that; described energy storage device includes passing sequentially through energy storage pressure stabilizing protector (10), energy storage ammeter (11) and the accumulator (12) that wire connects, and described energy storage pressure stabilizing protector (10) is connected with thermo-electric generation unit (1)。
5. a kind of thermo-electric generation energy storage being applied to boiler air preheater according to claim 1 and transmission system; it is characterized in that; described power transmitting device includes inverter (13), transmission of electricity voltage-stabilizing protector (14) and transmission of electricity ammeter (15), and described thermo-electric generation unit (1), inverter (13), voltage-stabilizing protector (14) of transmitting electricity, transmission of electricity ammeter (15) and electrical appliance (16) pass sequentially through wire and connect。
6. a kind of thermo-electric generation energy storage being applied to boiler air preheater according to claim 1 and transmission system, it is characterized in that, described multiple thermo-electric generation unit (1) mode in parallel is connected with energy storage device and power transmitting device after connecting respectively again。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212778.8A CN105703665A (en) | 2016-04-07 | 2016-04-07 | Thermoelectric power generation energy storage and power transmission system applied to air pre-heater of boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610212778.8A CN105703665A (en) | 2016-04-07 | 2016-04-07 | Thermoelectric power generation energy storage and power transmission system applied to air pre-heater of boiler |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270484Y (en) * | 2008-07-30 | 2009-07-08 | 叶永丰 | Thermoelectric generating apparatus for gas water heater |
| CN101882898A (en) * | 2010-05-28 | 2010-11-10 | 王峰 | Low temperature smoke temperature difference generator |
| CN104135191A (en) * | 2014-08-18 | 2014-11-05 | 中国地质大学（武汉） | Foam metal composite phase change material heat storage temperature-difference power generation device |
| CN204119089U (en) * | 2014-05-04 | 2015-01-21 | 曹志军 | A kind of boiler afterheat Blast Furnace Top Gas Recovery Turbine Unit (TRT) |
-
2016
- 2016-04-07 CN CN201610212778.8A patent/CN105703665A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270484Y (en) * | 2008-07-30 | 2009-07-08 | 叶永丰 | Thermoelectric generating apparatus for gas water heater |
| CN101882898A (en) * | 2010-05-28 | 2010-11-10 | 王峰 | Low temperature smoke temperature difference generator |
| CN204119089U (en) * | 2014-05-04 | 2015-01-21 | 曹志军 | A kind of boiler afterheat Blast Furnace Top Gas Recovery Turbine Unit (TRT) |
| CN104135191A (en) * | 2014-08-18 | 2014-11-05 | 中国地质大学（武汉） | Foam metal composite phase change material heat storage temperature-difference power generation device |
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Application publication date: 20160622 |
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