CN214840750U - Source-end coupled solar energy gain type coal-fired power plant boiler - Google Patents
Source-end coupled solar energy gain type coal-fired power plant boiler Download PDFInfo
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- CN214840750U CN214840750U CN202120924539.1U CN202120924539U CN214840750U CN 214840750 U CN214840750 U CN 214840750U CN 202120924539 U CN202120924539 U CN 202120924539U CN 214840750 U CN214840750 U CN 214840750U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The utility model discloses a source-end coupled solar energy gain type coal-fired power station boiler, which comprises a solar heat collector, a high-pressure heater, a hearth, a deaerator, a feed pump and a regulating valve; the outlet of the solar heat collector and the outlet of the high-pressure heater are communicated with the inlet of the hearth through pipelines and pipes, the outlet of the deaerator is divided into two paths after passing through a water feeding pump, one path is communicated with the inlet of the solar heat collector through a regulating valve, the other path is communicated with the inlet of the high-pressure heater, and the boiler can realize organic coupling of light energy and the boiler.
Description
Technical Field
The utility model relates to a boiler, concretely relates to source-end coupled solar energy benefit type coal fired power plant boiler.
Background
China is the first major carbon-emitting country in the world and occupies 27.2% of the carbon emission in the world. In order to achieve the established targets of carbon peak reaching and carbon neutralization, the power industry needs to develop new energy power stations with zero carbon emission, such as wind power stations, photovoltaic stations and the like, as future incremental power, and meanwhile, the traditional coal-fired thermal power plants with huge storage and high carbon emission need to be subjected to carbon reduction transformation. From the scale, the coal saving and carbon reduction effects and effects of the stock modification are far greater than those of incremental replacement. In addition, the cost of technical transformation is far less than the investment of a newly-built wind power plant and a photovoltaic photo-thermal power plant.
The current natural energy power generation technical route is that new energy electric power such as wind power, photovoltaic and the like is parallel to traditional thermoelectric power, and the competition situation of the new energy electric power and the traditional thermoelectric power between the new energy electric power and the traditional thermoelectric power is more practical and novel. In actual construction, in order to meet the demand of power peak shaving, a new energy power station project needs to be completed and a coal-fired power station with a certain capacity needs to be constructed. The arrangement of the double power stations undoubtedly causes great waste of investment, and the original purpose of carbon emission reduction is maintained, but the carbon emission of the traditional coal-fired power plant is increased.
If new energy forms such as wind energy, light energy and the like can be organically combined with the existing stock power station coal-fired boiler by means of the photothermal and wind-heat conversion devices, the good effect of saving coal and reducing carbon of the new energy power-assisted coal-fired boiler is realized, a new direction for harmonious symbiosis of natural energy utilization and traditional thermal power is undoubtedly developed, and similar disclosures are not provided in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a source-end coupled solar energy benefit type coal fired power plant boiler, this boiler can realize the organic coupling of light energy and boiler.
In order to achieve the purpose, the source end coupled solar energy gain type coal-fired power station boiler comprises a solar heat collector, a high-pressure heater, a hearth, a deaerator, a water feeding pump and a regulating valve;
the outlet of the solar heat collector and the outlet of the high-pressure heater are communicated with the inlet of the hearth through pipelines and pipes, the outlet of the deaerator is divided into two paths after passing through a feed pump, one path is communicated with the inlet of the solar heat collector through a regulating valve, and the other path is communicated with the inlet of the high-pressure heater.
The solar heat collector also comprises a reflecting mirror, wherein the reflecting mirror is opposite to the solar heat collector, and sunlight irradiates the solar heat collector through the reflecting mirror.
The high-pressure heater is a tubular heat exchanger.
The mirrors are arranged in an array.
The steam side of the high-pressure heater is communicated with the steam extraction port of the cylinder.
When the illumination intensity is smaller than the preset minimum intensity, the regulating valve is closed, and the feed water output by the feed water pump enters the high-pressure heater to be heated and then enters the hearth.
When the illumination intensity is higher than the highest intensity, the high-pressure heater is closed, the regulating valve is opened, and the feed water output by the feed water pump enters the solar heat collector to be heated and then enters the hearth.
When the illumination intensity is greater than the minimum intensity and less than the maximum intensity, the opening of the regulating valve is regulated, the feed water output by the feed pump is divided into two paths, wherein one path enters the high-pressure heater for heating, the other path enters the solar heat collector for heating, and the feed water output by the high-pressure heater and the feed water output by the solar heat collector converge and then enter the hearth.
The utility model discloses following beneficial effect has:
the solar energy of source end coupling benefit type coal fired power plant boiler when concrete operation, according to the change of solar illumination intensity, adjust the aperture of governing valve, make the feedwater of water-feeding pump output divide into two the tunnel, wherein heat through high pressure feed water heater all the way, another way is through the heating of solar collector, then enter into furnace after converging, in order to realize the organic coupling of light energy and boiler, and simultaneously, solar collector adopts the bypass design, it is nimble to move back, the volatility of fully considering solar heating, compare newly-built photovoltaic, the light and heat power plant reduces the carbon emission, have and reform transform low cost, application scope is extensive, fall advantages such as carbon potential is huge, bright application prospect has. Simultaneously with solar energy with the form of heat energy, follow conventional coal-fired thermal power generating unit of source end injection of power production, realize the harmonious intergrowth of new forms of energy and coal-fired thermal power generating unit, generate electricity in coordination, improve the feedwater temperature, reduce the unit coal consumption, consider the huge coal-fired thermal power plant of stock, the utility model discloses it is huge to the latent energy that reduces carbon emission. Compare in newly-built photovoltaic or light and heat type new forms of energy power station, the utility model discloses only implement technical transformation to current thermal power generating unit, when utilizing solar energy, greatly reduced tradition coal fired boiler's carbon discharges, and economic nature, feature of environmental protection, scale nature advantage are showing.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a deaerator, 2 is a water supply pump, 3 is a regulating valve, 4 is a high-pressure heater, 5 is a hearth, 6 is a solar heat collector, and 7 is a reflector.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the source-end coupled solar energy gain type coal-fired power plant boiler of the present invention includes a deaerator 1, a feed pump 2, a regulating valve 3, a high pressure heater 4, a furnace 5, a solar thermal collector 6 and a reflector 7;
the outlet of the solar thermal collector 6 and the outlet of the high-pressure heater 4 are communicated with the inlet of the hearth 5 through pipelines and pipes, the outlet of the deaerator 1 is divided into two paths after passing through the water feed pump 2, one path is communicated with the inlet of the solar thermal collector 6 through the regulating valve 3, the other path is communicated with the inlet of the high-pressure heater 4, the reflector 7 is over against the solar thermal collector 6, and sunlight irradiates the solar thermal collector 6 through the reflector 7.
When the illumination intensity is low or even no actual heating capacity exists at night or under cloudy conditions, the solar heat collector 6 is isolated by the regulating valve 3 and quits from running, the boiler feed water is completely improved in water temperature by the high-pressure heater 4, the high-pressure heater 4 is a tubular heat exchanger, high-temperature steam in the tube comes from the steam extraction of a steam turbine cylinder, and the steam after heat exchange is changed into hydrophobic steam to be discharged.
When the illumination intensity is gradually increased, the adjusting valve 3 is opened, the water flow of the bypass is adjusted to adapt to the fluctuation of the heating capacity of the solar heat collector 6, and when the bypass where the solar heat collector 6 is located is put into operation, the high-pressure heater 4 can reduce the output and even completely withdraw, so that the steam extraction of a cylinder is omitted, and the work efficiency of the steam turbine is prevented from being reduced. The mirrors 7 are arranged in an array, which has an automatic day-by-day function to ensure maximum utilization of the current sunlight.
Compare in light and heat type power station to fused salt heating to 550 ℃, the utility model provides a 6 solar collectors only need with boiler feed water heating to the highest 300 ℃ can, consequently do not need to build the huge speculum 7 of light and heat power station area, also need not so high support tower, the scale is little, with low costs, heating power satisfy thermal power unit operation requirement can.
The utility model discloses have 3 kinds of working medium modes, be conventional mode, double-circuit operational mode and full solar energy mode respectively.
The conventional mode is as follows: when the illumination intensity is weak and the solar heat collector 6 does not meet normal operation conditions, namely the illumination intensity is smaller than the minimum intensity, the adjusting valve 3 is closed, all the feed water output by the feed water pump 2 enters the high-pressure heater 4, steam is extracted by using a steam turbine cylinder for heating, and a part of steam in the cylinder is extracted to heat the feed water, so that the efficiency of the steam turbine is reduced.
Two-way operation mode: because the illumination intensity of the sun is periodically changed in one day, the heating capacity of the solar heat collector 6 is also changed, so that the fluctuation of the water temperature output by the solar heat collector 6 can be caused, the water supply quantity of the main path and the bypass path needs to be reasonably distributed through the regulating valve 3 to adapt to the current heating capacity of the heat collector 6, namely when the illumination intensity is greater than the minimum intensity and greater than the maximum intensity, the opening degree of the regulating valve 3 is increased along with the improvement of the heating capacity of the solar heat collector 6, the water quantity of the bypass path is increased, the water temperature of the outlet is maintained at the design value, the water quantity of the main path is reduced, the steam extraction of a cylinder required by the high-pressure heater 4 is gradually reduced, and the efficiency of the steam turbine is improved by utilizing the solar energy; when the illumination intensity is weakened, the heating capacity of the solar heat collector 6 is reduced, the opening degree of the adjusting valve 3 is reduced at the moment, the water quantity of the bypass is reduced, and the steam extraction of the cylinder required by the high-pressure heater 4 is increased along with the increase of the water quantity distributed by the main path so as to deal with the fluctuation of the solar heat collector 6.
Full solar mode: when the illumination intensity is big enough, when the illumination intensity is greater than preset maximum intensity promptly, solar collector 6's heating capacity reaches the biggest promptly, and governing valve 3 is opened entirely this moment, and the feedwater is all provided through the bypass, and export temperature satisfies the requirement, and high pressure feed water heater 4 is stopped use completely this moment, no longer needs the cylinder to take out steam, and solar energy is with external heat energy form follow source input coal-fired generating set, and the coal-saving carbon reduction effect of system reaches the biggest.
The utility model discloses a harmonious intergrowth of new forms of energy and fire coal thermal power, collaborative development to the new forms of energy promotes the carbon emission reduction of stock thermal power, and "new forms of energy heater" puts into use in a flexible way, and the volatility of the fully considered natural energy utilizes reasonable control to switch logic, and the coal-saving of full play new forms of energy subtracts carbon potentiality, realizes the effect that "1 +1 > 2". If the stock coal-fired power station can be fused with new energy in the source end coupling mode, a solar energy fusion type coal-fired unit is created, and a fundamental important supporting effect is generated on the carbon emission reduction business of China.
Claims (8)
1. A source-end coupled solar energy gain type coal-fired power plant boiler is characterized by comprising a solar heat collector (6), a high-pressure heater (4), a hearth (5), a deaerator (1), a feed pump (2) and a regulating valve (3);
the outlet of the solar heat collector (6) and the outlet of the high-pressure heater (4) are communicated with the inlet of the hearth (5) through pipelines and pipes, the outlet of the deaerator (1) is divided into two paths after passing through the water feed pump (2), one path is communicated with the inlet of the solar heat collector (6) through the regulating valve (3), and the other path is communicated with the inlet of the high-pressure heater (4).
2. The source-coupled solar energy incremental coal-fired power plant boiler according to claim 1, further comprising a reflector (7), the reflector (7) facing the solar heat collector (6), wherein solar light is irradiated onto the solar heat collector (6) through the reflector (7).
3. The source-coupled solar energy incremental coal-fired power plant boiler of claim 1, characterized in that the high-pressure heater (4) is a tubular heat exchanger.
4. The source-coupled solar energy incremental coal-fired utility boiler according to claim 1, characterized in that the mirrors (7) are arranged in an array.
5. The source-coupled solar energy incremental coal-fired power plant boiler of claim 1, characterized in that the steam side of the high pressure heater (4) is in communication with the steam extraction port of the cylinder.
6. The source-end coupled solar energy beneficial coal-fired power plant boiler according to claim 1, characterized in that when the illumination intensity is less than the preset minimum intensity, the regulating valve (3) is closed, and the feed water output by the feed water pump (2) enters the high-pressure heater (4) for heating and then enters the furnace (5).
7. The source-end coupled solar energy beneficial coal-fired power plant boiler according to claim 1, characterized in that when the illumination intensity is higher than the highest intensity, the high-pressure heater (4) is closed, the regulating valve (3) is opened, and the feed water output by the feed water pump (2) enters the solar heat collector (6) for heating and then enters the furnace chamber (5).
8. The source-end-coupled solar energy gain type coal-fired power plant boiler according to claim 1, characterized in that when the illumination intensity is greater than the minimum intensity and less than the maximum intensity, the opening of the regulating valve (3) is adjusted, the feed water output by the feed water pump (2) is divided into two paths, one path enters the high-pressure heater (4) for heating, the other path enters the solar heat collector (6) for heating, and the feed water output by the high-pressure heater (4) and the feed water output by the solar heat collector (6) converge and then enter the furnace (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120924539.1U CN214840750U (en) | 2021-04-29 | 2021-04-29 | Source-end coupled solar energy gain type coal-fired power plant boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120924539.1U CN214840750U (en) | 2021-04-29 | 2021-04-29 | Source-end coupled solar energy gain type coal-fired power plant boiler |
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| CN214840750U true CN214840750U (en) | 2021-11-23 |
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| CN202120924539.1U Active CN214840750U (en) | 2021-04-29 | 2021-04-29 | Source-end coupled solar energy gain type coal-fired power plant boiler |
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2021
- 2021-04-29 CN CN202120924539.1U patent/CN214840750U/en active Active
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