CN211625419U - Solar energy and gas thermoelectric combined energy supply system - Google Patents

Solar energy and gas thermoelectric combined energy supply system Download PDF

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Publication number
CN211625419U
CN211625419U CN201922208889.3U CN201922208889U CN211625419U CN 211625419 U CN211625419 U CN 211625419U CN 201922208889 U CN201922208889 U CN 201922208889U CN 211625419 U CN211625419 U CN 211625419U
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heat
solar
gas
water tank
boiler
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温向阳
叶俊
陈微
梁拾念
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Hangzhou Dingqiao Hospital
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Hangzhou Dingqiao Hospital
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

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Abstract

The utility model relates to a synthesize the energy supply field, especially, relate to a solar energy and thermoelectric energy supply system that unites of gas, including solar heating portion, thermoelectric power supply heating portion of gas and boiler heating portion, solar heating portion is including the first heat storage water tank that is used for heating the solar collector of cold water and savings hot water, thermoelectric power supply heating portion of gas is including the internal-combustion engine that can produce kinetic energy and heat energy, a generator for producing heat energy, waste heat recovery device and the second heat storage water tank for collecting generator waste heat and utilizing, waste heat recovery device's outside is provided with high temperature outlet pipe and cold water inlet tube, the other end and the second heat storage water tank of high temperature outlet pipe are connected, boiler heating portion is including the boiler heat exchanger that is used for heating the preheating water. The utility model provides a hot water heating's energy consumption height and the problem of rational utilization generator waste heat, still realized through automatic control system making the function that the hydrothermal mode of production can be rotated automatically under different work condition.

Description

Solar energy and gas thermoelectric combined energy supply system
Technical Field
The utility model relates to a synthesize the energy supply field, especially relate to a solar energy and gas thermoelectric combination energy supply system.
Background
At present, a common generator set of a domestic distributed energy system mainly comprises a gas turbine and an internal combustion engine. Gas turbines are classified by volume into micro gas turbines, small gas turbines, medium gas turbines, and large gas turbines. The gas turbine is called a micro gas turbine with several kilowatts to hundreds of kilowatts, a small gas turbine with several hundreds of kilowatts to tens of thousands of kilowatts, a medium gas turbine with several tens of thousands of kilowatts and a large gas turbine with hundreds of thousands of kilowatts. The efficiency of the combustion engine is generally about 20-45%, and the efficiency of a large combustion engine is high. The gas turbine consists of a gas compressor, a combustion chamber and a gas turbine. In addition, the combustion engine has a high demand for natural gas pressure. The capacity of the internal combustion engine is small, generally 20-18000 kW, and the internal combustion engine is suitable for a building type distributed energy system. The large internal combustion engine can be used for a regional distributed energy system, the efficiency of the small and medium internal combustion engines is slightly higher than that of the gas turbine, and the risk of reduction of power generation economy caused by price rise of natural gas can be reduced to a certain extent. In a traditional generator set operation mode (such as a diesel generator set), a large amount of waste heat (namely waste heat) is generated after power generation, the waste heat needs to be discharged to the atmosphere in time, otherwise, the generator set is overheated and stops, and therefore a set of cooling system (such as an emergency cooler or a cooling tower) is arranged on a common generator set. But this direct discharge of the waste heat (i.e., waste heat) is very wasteful.
Chinese patent CN201110323870.9 discloses a patent with the name of gas combined cycle and solar power generation combined heating system and a scheduling method thereof, the technical scheme of the patent is that a user supplies heat by adopting two modes of a hot water radiator and heat pump power consumption, wherein hot water is sourced from a gas combined cycle unit, electric power is supplied by the gas combined cycle unit and a solar power generator unit in a combined way, and a comprehensive scheduling control device predicts a period of time in the future after detecting the energy supply condition and the energy consumption condition of the user for a period of time; then scheduling is carried out on the basis, under the condition that power supply and heat energy supply are ensured to be met, the hot water flow of heating output is reduced, compensation is carried out by consuming power for heating, and power consumption for heating can compensate the deficiency of hot water for heating and can also increase the load in the electric power valley period; therefore, the solar power generation and the cogeneration are integrated, the fluctuation of the solar power generation is used for adjusting the output of the cogeneration and the change of the power consumption load condition of a user, and the equal detection period and the equal adjustment period are used, so that the equivalent smooth output of the solar power generation at the user side is realized. However, this patent uses an electric power consumption heating method to compensate for the shortage of the hot water heating, so that the energy consumption of the hot water heating is still relatively high, and the waste heat of the generator is not used.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem of hot water heating's energy consumption height and rational utilization generator waste heat, provide a simple and practical's solar energy and gas thermoelectricity combined energy supply system.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the solar energy and gas thermoelectric combined energy supply system comprises a solar heating part, a gas thermoelectric power supply heating part and a boiler heating part, wherein the solar heating part comprises a solar heat collector integrated with a water tank, a first heat storage water tank for storing hot water meeting temperature conditions and a preheating water tank for reheating; the boiler heat exchanger in the boiler heating part is connected with the preheating water tank, the boiler heating part is provided with a vacuum gas-fired boiler, and the vacuum gas-fired boiler can heat the preheating water tank through the boiler heat exchanger.
Preferably, a high-temperature water outlet pipe and a cold water inlet pipe are arranged outside the waste heat recovery device, and the other end of the high-temperature water outlet pipe is connected with the second heat storage water tank.
Preferably, the second heat storage water tank is provided with a heat storage circulating water pipe capable of exchanging heat with the high-temperature water in the high-temperature water outlet pipe.
Preferably, a first plate exchanger for connecting the heat storage circulating water pipe and the high-temperature water outlet pipe together and performing heat exchange is arranged between the heat storage circulating water pipe and the high-temperature water outlet pipe.
As preferred, the utility model discloses still including emergent condenser tube, be provided with between emergent condenser tube and the high temperature outlet pipe and exchange the machine with emergent condenser tube and high temperature outlet pipe link together and carry out the second board of heat exchange.
Preferably, the generator is externally provided with a grid-connected device which can enable the generator to be in grid-connected operation with the mains supply to supply power to the outside.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
the utility model discloses a solar heating portion production preheating water passes through gas thermoelectric power supply heating portion earlier, passes through boiler heating portion again, supplies with the water terminal at last. When the temperature of the preheated water produced by the solar thermal collector is enough, the gas thermoelectric power supply heating part and the boiler heating part do not need to be started; when the temperature of the preheated water produced by solar heat collection is not enough, a gas thermoelectric power supply heating part is started firstly, and if the water temperature of the gas thermoelectric power supply heating part is enough, a boiler heating part is not required to be started; and when the water temperature of the gas thermoelectric power supply heating part is not enough, the boiler heating part is started finally, and the vacuum gas-fired boiler heats the water in the preheating water tank to a specified temperature through the boiler heat exchanger and then sends the water to the water using terminal.
Drawings
Fig. 1 is a schematic view of embodiment 1 of the present invention.
Fig. 2 is a schematic view of a gas thermoelectric power supply and heating unit according to embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of electrical access in embodiment 1 of the present invention.
The names of the parts indicated by the numerical references in the drawings are as follows: the system comprises a solar heating part 1, a solar heat collector 11, a first heat storage water tank 12, a preheating water tank 13, a gas thermoelectric power supply heating part 2, an internal combustion engine 21, a generator 22, a grid-connected device 221, a waste heat recovery device 23, a high-temperature water outlet pipe 231, a cold water inlet pipe 232, a second heat storage water tank 24, a heat storage circulating water pipe 241, a first plate exchanger 242, an emergency cooling water pipe 25, a second plate exchanger 251, a boiler heating part 3, a boiler heat exchanger 31 and a gas vacuum boiler 32.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 to 3, the solar energy and gas thermoelectric combined energy supply system includes a solar heating unit 1, a gas thermoelectric power supply heating unit 2, and a boiler heating unit 3, and is characterized in that: the solar heating part 1 comprises a solar heat collector 11 integrated with a water tank, a first heat storage water tank 12 used for storing hot water meeting temperature conditions and a preheating water tank 13 used for reheating, the fuel gas thermoelectric power supply heating part 2 comprises an internal combustion engine 21, a generator 22, a waste heat recovery device 23 used for collecting waste heat of the generator 22 and a second heat storage water tank 24, the waste heat recovery device 23 is connected with the preheating water tank 13, and the waste heat recovery device 23 can heat the preheating water tank 13; the boiler heat exchanger 31 in the boiler heating unit 3 is connected to the preheating water tank 13, and the boiler heating unit 3 is provided with a vacuum gas boiler 32, and the vacuum gas boiler 32 can heat the preheating water tank 13 through the boiler heat exchanger 31.
The waste heat recovery device 23 is provided with a high temperature water outlet pipe 231 and a cold water inlet pipe 232 outside, the other end of the high temperature water outlet pipe 231 is connected with the second heat storage water tank 24, the second heat storage water tank 24 is provided with a heat storage circulating water pipe 241 capable of exchanging heat with the high temperature water in the high temperature water outlet pipe 231, and a first plate exchanger 242 for connecting the heat storage circulating water pipe 241 and the high temperature water outlet pipe 231 together and exchanging heat is arranged between the heat storage circulating water pipe 241 and the high temperature water outlet pipe 231.
The emergency cooling water pipe 25 is further included in the embodiment, and a second plate exchanger 251 for connecting the emergency cooling water pipe 25 and the high-temperature water outlet pipe 231 together and performing heat exchange is arranged between the emergency cooling water pipe 25 and the high-temperature water outlet pipe 231.
The generator 22 of the present embodiment is externally provided with a grid-connected device 221 that can supply power to the outside by grid-connected operation of the generator 22 and the commercial power.
The gas thermoelectric power supply heating part 2 of this embodiment still provides a set of gas thermoelectric cogeneration distributed energy system, when supplying partial electric power for the building, can utilize generator 22 waste heat to provide the heat source of preparing hot water, and distributed energy system adopts "the temperature to mouthful, the principle of cascade utilization" carries out comprehensive utilization to clean energy natural gas, has greatly improved energy primary utilization. The energy supply center serving the local can be directly arranged near the user facing the requirements of the local user, so that the energy transmission link of the user provided by the system is simplified, the energy loss and the transmission cost in the energy transmission process are reduced, and the safety of the energy supply of the user is improved. The system is an open energy system, shows a multifunctional trend, not only comprises various energy input, but also can simultaneously meet various energy requirements of users.
The specific implementation process of the embodiment is as follows: the method comprises the steps of firstly adopting a solar heating part 1 to produce preheated water, firstly passing through a gas thermoelectric power supply heating part 2, then passing through a boiler heating part 3, and finally supplying the preheated water to a water using terminal. When the temperature of the preheated water produced by the solar thermal collector 21 reaches 45 ℃, the condition can be realized by a temperature sensor, the method belongs to the common technology, details are not repeated in the embodiment, and the gas thermoelectric power supply heating part 2 and the boiler heating part 3 do not need to be started; at this time, the hot water of the solar thermal collector 11 is directly supplied to the first thermal storage water tank 12, and it is obvious that an electromagnetic switch valve (not shown) is arranged between the first thermal storage water tank 12 and the solar thermal collector 11, and the electromagnetic switch valve is controlled by a signal of a temperature sensor; when the temperature of the preheated water produced by the solar thermal collector 11 is insufficient, the gas thermoelectric power supply heating part 2 is started first, and if the temperature of the gas thermoelectric power supply heating part 2 is sufficient, the hot water produced by the waste heat recovery device 23 is directly supplied to the second heat storage water tank 24, the boiler heating part 3 does not need to be started, and obviously, an electromagnetic switch valve (not shown) is arranged between the second heat storage water tank 24 and the waste heat recovery device 23 and is controlled by the signal of the temperature sensor; when the water temperature of the gas-fired thermoelectric power supply heating unit 2 is not sufficient, the boiler heating unit 3 is finally started, and the vacuum gas-fired boiler 32 heats the water in the preheating water tank 13 to a predetermined temperature through the boiler heat exchanger 31 and then sends the water to the water use terminal.
In the embodiment, under different working conditions, the mode of producing hot water can be automatically alternated through an automatic control system, in high-temperature seasons in summer, the hot water supply area generated by the solar heating part 1 is mainly used, and the gas thermoelectric power supply heating part 2 and the boiler heating part 3 are basically in an inactive state; in alternate seasons of autumn and winter, including alternate seasons of winter and spring, hot water generated by the gas thermoelectric power supply heating part 2 is mainly used (because the amount of hot water generated by solar energy is small at the moment); in the two working conditions, if the hot water generated by the solar heating part 1 is consumed completely, the system automatically starts the thermoelectric power supply heating part 2 to supply hot water; when the hot water in the gas thermoelectric power supply heating unit 2 is also consumed, the system automatically starts the boiler heating unit 3 to operate to produce hot water.
When the gas-fired thermoelectric power supply heating unit 2 of the present embodiment is started, the generator 22 generates power to the power distribution cabinet by the power generated by the combustion of natural gas by the internal combustion engine 21, the power distribution cabinet provides electric energy to the electricity utilization area through the grid-connected device 221, and the waste heat collecting device 23 collects the waste heat of flue gas generated by the internal combustion engine 21 and the waste heat of cylinder water for heating cold water or preheated water delivered from the solar heating unit 2, and after heating, high-temperature water is input into the second heat storage water tank 24 through the high-temperature water outlet pipe 231, because the hot water in the second heat storage water tank 24 can be naturally cooled under natural conditions, the temperature cannot meet the requirement of the input water utilization area, the heat storage circulating water pipe 241 on the second heat storage water tank 24 and the high-temperature water outlet pipe 231 are connected together through the first plate exchanging machine 242, so as to prevent the water in the second heat storage water tank 24 from being overheated and being unable to exchange heat, the emergency cooling water pipe 25 provided in the gas thermoelectric power supply heating unit 2 of the present embodiment can exchange heat of the high-temperature water outlet pipe by the second plate exchanger 251, so that the hot water in the second hot water storage tank 24 is not overheated, thereby reducing the occurrence of safety accidents.
Example 2
This embodiment is different from embodiment 1 in that: a plate exchanger for exchanging heat is also provided between the heat storage circulating water pipe 241 and the emergency cooling water pipe 25.
Example 3
This embodiment is different from embodiment 1 in that: the number of the second board changers 251 is two.
In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims (6)

1. Solar energy and gas thermoelectric combined energy supply system, including solar heating portion (1), gas thermoelectric power supply heating portion (2) and boiler heating portion (3), its characterized in that: the solar heating part (1) comprises a solar heat collector (11) integrated with a water tank, a first heat storage water tank (12) used for storing hot water meeting a temperature condition and a preheating water tank (13) used for reheating, the gas thermoelectric power supply heating part (2) comprises an internal combustion engine (21), a generator (22), a waste heat recovery device (23) used for collecting waste heat of the generator (22) and a second heat storage water tank (24), the waste heat recovery device (23) is connected with the preheating water tank (13), and the waste heat recovery device (23) can heat the preheating water tank (13); a boiler heat exchanger (31) in a boiler heating part (3) is connected with a preheating water tank (13), the boiler heating part (3) is provided with a vacuum gas-fired boiler (32), and the vacuum gas-fired boiler (32) can heat the preheating water tank (13) through the boiler heat exchanger (31).
2. The solar and gas combined heat and power system of claim 1, wherein: a high-temperature water outlet pipe (231) and a cold water inlet pipe (232) are arranged outside the waste heat recovery device (23), and the other end of the high-temperature water outlet pipe (231) is connected with the second heat storage water tank (24).
3. The solar and gas combined heat and power system of claim 2, wherein: the second heat storage water tank (24) is provided with a heat storage circulating water pipe (241) which can exchange heat with the high-temperature water in the high-temperature water outlet pipe (231).
4. The solar and gas combined heat and power system of claim 3, wherein: a first plate exchanger (242) which connects the heat storage circulating water pipe (241) and the high-temperature water outlet pipe (231) together and exchanges heat is arranged between the heat storage circulating water pipe (241) and the high-temperature water outlet pipe (231).
5. Solar and gas combined heat and power system according to claim 4, further comprising an emergency cooling water pipe (25), characterized in that: a second plate exchanger (251) which connects the emergency cooling water pipe (25) and the high-temperature water outlet pipe (231) together and performs heat exchange is arranged between the emergency cooling water pipe (25) and the high-temperature water outlet pipe (231).
6. The solar and gas combined heat and power system of claim 1, wherein: a grid-connected device (221) which can enable the generator (22) to be in grid-connected operation with the commercial power to supply power to the outside is arranged outside the generator (22).
CN201922208889.3U 2019-12-11 2019-12-11 Solar energy and gas thermoelectric combined energy supply system Active CN211625419U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112879114A (en) * 2021-01-15 2021-06-01 云南电网有限责任公司电力科学研究院 Thermoelectric cooperative system and method based on multi-energy complementation and step heat storage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112879114A (en) * 2021-01-15 2021-06-01 云南电网有限责任公司电力科学研究院 Thermoelectric cooperative system and method based on multi-energy complementation and step heat storage
CN112879114B (en) * 2021-01-15 2023-07-07 云南电网有限责任公司电力科学研究院 Thermoelectric cooperative system and method based on multi-energy complementation and step heat accumulation

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