CN218846492U - Combined cooling, heating and power system combining electric heat storage equipment and organic Rankine cycle - Google Patents
Combined cooling, heating and power system combining electric heat storage equipment and organic Rankine cycle Download PDFInfo
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- CN218846492U CN218846492U CN202223428094.1U CN202223428094U CN218846492U CN 218846492 U CN218846492 U CN 218846492U CN 202223428094 U CN202223428094 U CN 202223428094U CN 218846492 U CN218846492 U CN 218846492U
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Abstract
The utility model discloses a combined cooling, heating and power system combining electric heat storage equipment and organic Rankine cycle, which comprises an electric heat storage heat source system, an organic Rankine cycle power generation system, an absorption refrigeration system and a circulating water heating system; the electric heat storage heat source system is connected with a power grid to convert electric energy into heat energy and store the heat energy; the organic Rankine cycle power generation system is connected with the electric heat storage heat source system to generate power by utilizing heat energy, and is connected with a power grid and/or a user to supply power; the absorption refrigeration system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy for refrigeration, and the absorption refrigeration system is connected with a user for cooling; the circulating water heating system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy, and the circulating water heating system is connected with a user to heat. The electric heat storage equipment is used for converting electric energy in the off-peak electricity time period into heat energy for storage, and supplying heat, cold and power to users when in need.
Description
Technical Field
The utility model relates to an energy utilization technical field, concretely relates to combined cooling, heating and power system that electric heat storage equipment and organic rankine cycle combined together.
Background
When large-scale clean energy power generation system grid-connected power generation is vigorously promoted, due to the fact that wind energy and solar power generation have various unstable characteristics such as intermittency, volatility and randomness, after large-scale photovoltaic power generation and wind power generation are connected in a grid mode, the stability of an original power grid is greatly impacted, the peak regulation capacity of the power grid faces higher challenges, and certain problems still exist in the aspects of economy, energy utilization rate and the like only by relying on peak regulation of a coal-fired thermal power generator set. At present, electric heat storage equipment with a certain scale participates in peak shaving work of a thermal generator set, but the stored heat energy of the electric heat storage equipment can only be used for external heat supply. Energy can not be reasonably utilized in the period without heat supply demand, and a large amount of energy loss can still be caused, so that the utility model discloses an energy utilization system which can both effectively participate in the peak clipping and valley filling of the power grid in each period is very necessary.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a combined cooling, heating and power system that electric heat storage equipment and organic rankine cycle combined together, this system utilize the electric heat storage equipment to convert the electric energy in with the off-peak electricity time quantum into heat energy storage to for user's heat supply, cooling and power supply when having the demand.
In order to achieve the above object, the present invention provides the following technical solutions:
a combined cooling, heating and power system combining electric heat storage equipment and an organic Rankine cycle comprises an electric heat storage heat source system, an organic Rankine cycle power generation system, an absorption refrigeration system and a circulating water heating system; the electric heat storage heat source system is connected with a power grid so as to convert electric energy into heat energy and store the heat energy; the organic Rankine cycle power generation system is connected with the electric heat storage heat source system to generate power by utilizing heat energy, and the organic Rankine cycle power generation system is connected with a power grid and/or a user to supply power; the absorption refrigeration system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy for refrigeration, and the absorption refrigeration system is connected with a user to supply cold; the circulating water heating system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy, and the circulating water heating system is connected with a user to heat.
Further, the electric heat storage heat source system comprises electric heat storage equipment, the organic Rankine cycle power generation system comprises an organic working medium evaporator, an expander and a power generator, a water outlet of the electric heat storage equipment is connected with a water inlet of the organic working medium evaporator, and a water outlet of the organic working medium evaporator is connected with a water inlet of the electric heat storage equipment; the working medium outlet of the organic working medium evaporator is connected with the air inlet of the expander, the air outlet of the expander is connected with the working medium inlet of the organic working medium evaporator, and the power output end of the expander is connected with the generator; the generator is connected to the grid and/or to the user for power supply.
Furthermore, the electric heat storage heat source system also comprises a circulating water pump, and the circulating water pump is connected in series with a water inlet of the electric heat storage equipment.
Furthermore, the absorption refrigeration system comprises an absorption refrigeration unit, a hot water inlet of the absorption refrigeration unit is connected with a water outlet of the electric heat storage equipment and/or a water outlet of the organic working medium evaporator, and a hot water outlet of the absorption refrigeration unit is connected with a water inlet of the electric heat storage equipment; and the refrigerant outlet of the absorption refrigerating unit is connected with the refrigerant inlet of a user, and the refrigerant inlet of the absorption refrigerating unit is connected with the refrigerant outlet of the user.
Further, the organic Rankine cycle power generation system further comprises a condenser, wherein an air inlet of the condenser is connected with an air outlet of the expansion machine, and a liquid outlet of the condenser is connected with a working medium inlet of the organic working medium evaporator; a first water inlet of the circulating water heating system is connected with a water outlet of the electric heat storage device and/or a water outlet of the condenser, and a first water outlet of the circulating water heating system is connected with a water inlet of a user; and a second water inlet of the circulating water heating system is connected with a water outlet of a user, and a second water outlet of the circulating water heating system is connected with a water inlet of the electric heat storage equipment and/or a water inlet of the condenser.
Further, the organic Rankine cycle power generation system further comprises a gas-liquid separator, a liquid storage tank and a working medium pump; a working medium inlet of the gas-liquid separator is connected with a working medium outlet of the organic working medium evaporator, and an air outlet of the gas-liquid separator is connected with an air inlet of the expansion machine; a liquid inlet of the liquid storage tank is connected with a liquid outlet of the condenser, and a liquid outlet of the liquid storage tank is connected with a liquid inlet of the working medium pump; the working medium pump is connected in series with the working medium inlet of the organic working medium evaporator.
Furthermore, a refrigerant circulating pump is connected in series on a pipeline between a refrigerant inlet of the absorption refrigerating unit and a refrigerant outlet of a user, and a heating circulating pump is connected in series on a pipeline between a water outlet of the user and a water inlet of the condenser.
Further, the combined cooling heating and power system also comprises a circulating water cooling system, and the circulating water cooling system is connected with an absorption refrigeration system and/or the organic Rankine cycle power generation system to provide cooling water.
Further, the circulating water cooling system comprises a cooling tower and a cooling water circulating pump; the water inlet of the cooling tower is connected with the water outlet of the condenser and/or the cold water outlet of the absorption cooling unit, and the water outlet of the cooling tower is connected with the water inlet of the condenser and/or the cold water inlet of the absorption cooling unit; the cooling water circulating pump is connected in series with the water outlet of the cooling tower.
Furthermore, valves for controlling on-off are arranged on pipelines among the electric heat storage heat source system, the organic Rankine cycle power generation system, the absorption refrigeration system, the circulating water heating system and the circulating water cooling system.
The utility model has the advantages of as follows:
the utility model provides an electricity thermal storage equipment and organic rankine cycle combined together's cold heat and electricity cogeneration system can utilize to abandon wind and abandon light or low ebb electricity as energy supply, turns into heat energy storage with the electric energy to supply cold, heat supply and power supply to the user at power consumption peak period or suitable time, can effectively alleviate electric wire netting peak regulation pressure. The electric heat storage device is used as a heat source, through the energy cascade utilization principle, organic working media absorb heat from the heat source in the organic working medium evaporator and are gasified, the organic working media enter the expansion machine to do work to drive the generator to generate electricity, low-temperature and low-pressure working media after doing work enter the condenser to heat and supply heat and return water, heat of the heat source enters the absorption refrigerating unit after coming out of the organic working medium evaporator, and therefore the absorption refrigerating unit is used for providing a cold source for users. Through the valve on the control pipeline, can make each system independent operation or arbitrary system joint operation according to actual conditions, can independently or simultaneously to user's cooling, heat supply and power supply, the electric energy that sends also can be carried to the electric wire netting, not only can effectively alleviate electric wire netting pressure, the load is filled in to the peak clipping, maintains electric wire netting stability, can the efficient take up and abandon wind, abandon light and low ebb electricity, improvement energy utilization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, proportion, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, proportion relation change or size adjustment still falls within the scope which can be covered by the technical content disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic view of a combined cooling, heating and power system combining an electric thermal storage device and an organic rankine cycle according to an embodiment of the present invention.
In the figure: 1-an electric network, 2-an electric heat storage device, 3-a circulating water pump, 4-an organic working medium evaporator, 5-a gas-liquid separator, 6-an expander, 7-a generator, 8-a condenser, 9-a liquid storage tank, 10-a working medium pump, 11-an absorption refrigerating unit, 12-a refrigerant circulating pump, 13-a cooling water circulating pump, 14-a cooling tower, 15-a user, 16-a heating circulating pump, 17.1-a first valve, 17.2-a second valve, 17.3-a third valve, 17.4-a fourth valve, 17.5-a fifth valve, 17.6-a sixth valve, 17.7-a seventh valve, 17.8-an eighth valve, 17.9-a ninth valve, 17.10-a tenth valve, 17.11-an eleventh valve, 17.12-a twelfth valve, 17.13-thirteenth valve, 17.4-fourteenth valve, 17.5-fifteenth valve, 17.6-sixteenth valve, 17.7-seventeenth valve, 18.1-first pipeline, 18.2-second pipeline, 18.3-third pipeline, 18.4-fourth pipeline, 18.5-fifth pipeline, 18.6-sixth pipeline, 18.7-seventh pipeline, 18.8-eighth pipeline, 18.9-ninth pipeline, 18.10-tenth pipeline, 18.11-eleventh pipeline, 18.12-twelfth pipeline, 18.13-thirteenth pipeline, 18.14-fourteenth pipeline, 18.15-fifteenth pipeline, 18.16-sixteenth pipeline, 18.17-seventeenth pipeline, 18.18-eighteenth pipeline.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1, the embodiment provides a combined cooling, heating and power system combining an electric heat storage device and an organic rankine cycle, which includes an electric heat storage heat source system, an organic rankine cycle power generation system, an absorption refrigeration system, a circulating water heating system, a circulating water cooling system, and a plurality of pipes and valves. The electric heat storage and heat source system is connected with the power grid 1 to convert electric energy into heat energy and store the heat energy. The organic Rankine cycle power generation system is connected with the electric heat storage heat source system to generate power by using heat energy, and the organic Rankine cycle power generation system is connected with the power grid 1 and/or the user 15 to supply power. The absorption refrigeration system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy for refrigeration, and the absorption refrigeration system is connected with the user 15 to supply cold. The circulating water heating system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy, and the circulating water heating system is connected with the user 15 to heat. The circulating water cooling system is connected with the absorption refrigeration system and/or the organic Rankine cycle power generation system to provide cooling water.
The electric heat storage heat source system comprises an electric heat storage device 2 and a circulating water pump 3, the organic Rankine cycle power generation system comprises an organic working medium evaporator 4, a gas-liquid separator 5, an expansion machine 6, a power generator 7, a condenser 8, a liquid storage tank 9 and a working medium pump 10, the absorption refrigeration system comprises an absorption refrigeration unit 11 and a refrigerant circulating pump 12, the circulating water heating system comprises a heating circulating pump 16, and the circulating water cooling system comprises a cooling tower 14 and a cooling water circulating pump 13. The electric heat storage device 2 is preferably an electric heat storage device 2 capable of providing high-temperature hot water, the temperature of a heat source is adjustable, the absorption refrigerating unit 11 is preferably a single-effect lithium bromide unit, the designed evaporation temperature of an organic working medium of the organic Rankine cycle power generation system can exceed 90 ℃, the temperature of the heat source subjected to heat exchange by the organic working medium evaporator 4 is designed to be about 80 ℃, the operating condition of the single-effect lithium bromide refrigerating unit is met, the condensation temperature is designed to be about 40 ℃, and the return water temperature of the condenser 8 is suitable for heating in most areas.
The water outlet of the electric heat storage device 2 is connected with the water inlet of the organic working medium evaporator 4 through a first pipeline 18.1, and a second valve 17.2 is connected to the first pipeline 18.1 in series. The water outlet of the organic working medium evaporator 4 is connected with the hot water inlet of the absorption refrigerating unit 11 through a second pipeline 18.2. The second pipeline 18.2 is connected in series with a third valve 17.3, a fourth valve 17.4 and a fifth valve 17.5. A hot water outlet of the absorption refrigerating unit 11 is connected with a water inlet of the electric heat storage device 2 through a third pipeline 18.3, and a seventh valve 17.7 and a circulating water pump 3 are sequentially connected to the third pipeline 18.3 in series.
The working medium outlet of the organic working medium evaporator 4 is connected with the working medium inlet of the gas-liquid separator 5 through a fourth pipeline 18.4, the gas outlet of the gas-liquid separator 5 is connected with the gas inlet of the expander 6 through a fifth pipeline 18.5, the power output end of the expander 6 is connected with the generator 7, the generator 7 is connected with the power grid 1 and/or the user 15 for supplying power, the gas outlet of the expander 6 is connected with the gas inlet of the condenser 8 through a sixth pipeline 18.6, the liquid outlet of the condenser 8 is connected with the liquid inlet of the liquid storage tank 9 through a seventh pipeline 18.7, the liquid outlet of the liquid storage tank 9 is connected with the liquid inlet of the working medium pump 10 through an eighth pipeline 18.8, and the working medium pump 10 is connected with the eighth pipeline 18.8 in series.
The refrigerant outlet of the absorption refrigeration unit 11 is connected with the refrigerant inlet of the user 15 through a ninth pipeline 18.9, the refrigerant inlet of the absorption refrigeration unit 11 is connected with the refrigerant outlet of the user 15 through a tenth pipeline 18.10, and a refrigerant circulating pump 12 is connected to the tenth pipeline 18.10 in series.
A water outlet of the condenser 8 is connected with a water inlet of a user 15 through an eleventh pipeline 18.11, and a twelfth valve 17.12 and a fourteenth valve 17.14 are sequentially connected on the eleventh pipeline 18.11 in series; the water outlet of the user 15 is connected with the water inlet of the condenser 8 through a twelfth pipeline 18.12, and a heating circulating pump 16, a fifteenth valve 17.15 and a thirteenth valve 17.13 are sequentially connected on the twelfth pipeline 18.12 in series.
A water inlet of the cooling tower 14 is connected with a cold water outlet of the absorption cooling unit through a thirteenth pipeline 18.13, and an eleventh valve 17.11 and a sixteenth valve 17.16 are sequentially connected on the thirteenth pipeline 18.13 in series; a water outlet of the cooling tower 14 is connected with a cold water inlet of the absorption chiller unit through a fourteenth pipeline 18.14, and a cooling water circulating pump 13, a seventeenth valve 17.17 and a tenth valve 17.10 are sequentially connected in series on the fourteenth pipeline 18.14.
The system is further provided with a fifteenth conduit 18.15 and a sixteenth conduit 18.16. A first end of the fifteenth conduit 18.15 is connected to the first conduit 18.1 at a point upstream of the second valve 17.2; a second end of the fifteenth tube 18.15 is connected to the eleventh tube 18.11 at a connection point between the twelfth valve 17.12 and the fourteenth valve 17.14; a first valve 17.1 and an eighth valve 17.8 are connected in series on the fifteenth pipeline 18.15 in sequence; the fifteenth conduit 18.15 communicates with the second conduit 18.2 at a point between the first valve 17.1 and the eighth valve 17.8 of the fifteenth conduit 18.15 and between the third valve 17.3 and the fourth valve 17.4 of the second conduit 18.2. A first end of the sixteenth conduit 18.16 is connected to the twelfth conduit 18.12 at a connection point between the fifteenth valve 17.15 and the thirteenth valve 17.13; the second end of the sixteenth pipeline 18.16 is connected with the third pipeline 18.3, and the connection point is between the seventh valve 17.7 and the circulating water pump 3; a ninth valve 17.9 and a sixth valve 17.6 are sequentially connected in series on the sixteenth pipeline 18.16; the sixteenth conduit 18.16 is connected to the second conduit 18.2 at a point between the ninth valve 17.9 and the sixth valve 17.6 of the sixteenth conduit 18.16 and between the fourth valve 17.4 and the fifth valve 17.5 of the second conduit 18.2.
The system is further provided with a seventeenth conduit 18.17 and an eighteenth conduit 18.18. The first end of the seventeenth pipe 18.17 is connected to the fourteenth pipe 18.14 at a connection point between the seventeenth valve 17.17 and the tenth valve 17.10; a second end of the seventeenth conduit 18.17 is connected to a twelfth conduit 18.12 at a connection point between the fifteenth valve 17.15 and the thirteenth valve 17.13. The first end of the eighteenth duct 18.18 is connected to the thirteenth duct 18.13 at a connection point between the sixteenth valve 17.16 and the eleventh valve 17.11; the second end of the eighteenth duct 18.18 is connected to the ninth duct 18.9 at a connection point between the twelfth valve 17.12 and the fourteenth valve 17.14.
In general, "sequentially" in the above context refers to the direction of gas or liquid flow, with the first end referring to the inlet end and the second end referring to the discharge end.
When the system operates in non-refrigeration seasons and non-heating seasons and in the off-peak electricity time period, the power supply of the electric heat storage equipment 2 is started, electric energy is converted into heat energy to be stored, the circulating water pump 3 is started in the electricity utilization peak time period to provide heat energy to the outside, at the moment, the absorption type refrigeration system and the circulating water heating system do not work, and the electric energy generated by the organic Rankine cycle power generation system is used by a user 15 or is directly merged into the power grid 1.
When the heating season is running, in the off-peak electricity time period, the power supply of the electric heat storage equipment 2 is started, and electric energy is converted into heat energy to be stored. When the heat is used, the first valve 17.1, the fifth valve 17.5, the seventh valve 17.7, the eighth valve 17.8, the ninth valve 17.9, the tenth valve 17.10, the eleventh valve 17.11, the sixteenth valve 17.16 and the seventeenth valve 17.17 are closed, the second valve 17.2, the third valve 17.3, the fourth valve 17.4, the sixth valve 17.6, the twelfth valve 17.12, the thirteenth valve 17.13, the fourteenth valve 17.14 and the fifteenth valve 17.15 are opened, the heating circulating pump 16 is started, the circulating water pump 3 is started to supply heat energy to the outside, the circulating hot water flows through the organic working medium evaporator 4 to heat the organic working medium, so that the organic working medium enters the expander 6 through the gas-liquid separator 5 after being vaporized, the expander 6 is pushed to do work and is transmitted to the generator 7 to generate power, and the generated power is used by the user 15 or directly merged into the power grid 1. The organic working medium passing through the expander 6 enters the condenser 8 and is cooled by cooling water flowing through the condenser 8, the cooling water is heated and enters a circulating water heating system to supply heat to a user 15, and the heating circulating water provides power through a heating circulating pump 16. The organic working medium flowing out of the condenser 8 enters the liquid storage tank 9 and reenters the power generation cycle through the working medium pump 10. The circulating hot water flowing out of the organic working medium evaporator 4 returns to the electric heat storage device to be reheated, and the circulating hot water does not flow through the absorption refrigerating unit 11 in the process. When the heating load of the user 15 is reduced and the cooling requirement of the condenser 8 cannot be met, the sixteenth valve 17.16 and the seventeenth valve 17.17 are opened, the cooling water circulating pump 13 is opened, and the effluent water of the condenser 8 enters the cooling tower 14 to be cooled through controlling and adjusting part of the effluent water, and is recycled. In an extreme case, the heating demand load of the user 15 is too large, the heat released by the condenser 8 cannot be met, at this time, the power generation system needs to be shut down, the second valve 17.2, the third valve 17.3, the fourth valve 17.4, the fifth valve 17.5, the seventh valve 17.7, the tenth valve 17.10, the eleventh valve 17.11, the twelfth valve 17.12, the thirteenth valve 17.13, the sixteenth valve 17.16 and the seventeenth valve 17.17 are closed, the first valve 17.1, the sixth valve 17.6, the eighth valve 17.8, the ninth valve 17.9, the fourteenth valve 17.14 and the fifteenth valve 17.15 are opened, the electric heat storage device 2 directly supplies heat to the user 15, the circulating hot water directly flows into the circulating water heating system from the electric heat storage device 2 to heat the user 15, and directly returns to the electric heat storage device 2 to ensure the safety demand of the user 15, and the organic rankine cycle power generation system and the absorption refrigeration system do not work in the process.
When the electric heat storage device is operated in a refrigeration season, the power supply of the electric heat storage device 2 is turned on in a valley electricity time period, and electric energy is converted into heat energy to be stored. When the cooling water is used, the first valve 17.1, the sixth valve 17.6, the eighth valve 17.8, the ninth valve 17.9, the fourteenth valve 17.14 and the fifteenth valve 17.15 are closed, the second valve 17.2, the third valve 17.3, the fourth valve 17.4, the fifth valve 17.5, the seventh valve 17.7, the tenth valve 17.10, the eleventh valve 17.11, the twelfth valve 17.12, the thirteenth valve 17.13, the sixteenth valve 17.16 and the seventeenth valve 17.17 are opened, the cooling water circulating pump 13 is opened, the refrigerant circulating pump 12 is opened, the circulating water pump 3 is opened to supply heat energy to the outside, the circulating hot water flows through the organic working medium evaporator 4 to heat the organic working medium, the organic working medium enters the expander 6 through the gas-liquid separator 5 after being vaporized, the expander 6 is pushed to be used as work and is transmitted to the generator 7 to generate electricity, and the generated electricity is used by a user 15 or directly incorporated into the power grid 1. The organic working medium passing through the expansion machine 6 enters the condenser 8 and is cooled by cooling water flowing through the condenser 8, the cooling water is heated and sent to the cooling tower 14 for cooling, and the cooling circulating water provides power through the cooling water circulating pump 13. The organic working medium flowing out of the condenser 8 enters the liquid storage tank 9 and reenters the power generation cycle through the working medium pump 10. The circulating hot water flowing out of the organic working medium evaporator 4 enters the absorption refrigerating unit 11. The absorption refrigerating unit 11 is used for supplying cold for a user 15, cooling water of the absorption refrigerating unit 11 flows into the cooling tower 14 for cooling, and flows into the absorption refrigerating unit 11 through the cooling water circulating pump 13 to form circulation. The refrigerant supplies cooling to the user 15 by the refrigerant circulation pump 12, and the circulating hot water flowing out of the absorption refrigeration unit 11 returns to the electric heat storage device 2 to be reheated, and the heating cycle does not operate. When only the cooling needs to be supplied to the user 15, the power generation system is shut down, the second valve 17.2, the third valve 17.3, the sixth valve 17.6, the eighth valve 17.8, the ninth valve 17.9, the twelfth valve 17.12, the thirteenth valve 17.13, the fourteenth valve 17.14 and the fifteenth valve 17.15 are closed, the first valve 17.1, the fourth valve 17.4, the fifth valve 17.5, the seventh valve 17.7, the tenth valve 17.10, the eleventh valve 17.11, the sixteenth valve 17.16 and the seventeenth valve 17.17 are opened, and the circulating hot water directly flows into the absorption refrigeration unit 11 to supply the cooling to the user 15, and the organic rankine cycle power generation system does not work at this time.
The combined cooling, heating and power system combining the electric heat storage device and the organic Rankine cycle can utilize abandoned wind and abandoned light or off-peak electricity as energy supply, convert electric energy into heat energy for storage, supply cold, heat and power to users at peak time or appropriate time of power utilization, and can effectively relieve peak regulation pressure of a power grid. The electric heat storage device 2 is used as a heat source, through the energy cascade utilization principle, organic working media absorb heat from the heat source in the organic working medium evaporator 4 and are gasified, then the organic working media enter the expansion machine 6 to do work to drive the generator 7 to generate electricity, the low-temperature and low-pressure working media after doing work enter the condenser 8 to heat and supply heat and return water, the heat of the heat source enters the absorption refrigerating unit 11 after coming out of the organic working medium evaporator 5, and therefore the absorption refrigerating unit 11 is used for providing a cold source for users. Through the valve on the control pipeline, can make each system independent operation or arbitrary system joint operation according to actual conditions, can independently or simultaneously to user's cooling, heat supply and power supply, the electric energy that sends also can be carried to the electric wire netting, not only can effectively alleviate electric wire netting pressure, the load is filled in to the peak clipping, maintains electric wire netting stability, can the efficient take up and abandon wind, abandon light and low ebb electricity, improvement energy utilization.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.
Claims (10)
1. A combined cooling heating and power system combining electric heat storage equipment and an organic Rankine cycle is characterized by comprising an electric heat storage heat source system, an organic Rankine cycle power generation system, an absorption refrigeration system and a circulating water heating system; the electric heat storage heat source system is connected with a power grid so as to convert electric energy into heat energy and store the heat energy; the organic Rankine cycle power generation system is connected with the electric heat storage heat source system to generate power by utilizing heat energy, and the organic Rankine cycle power generation system is connected with a power grid and/or a user to supply power; the absorption refrigeration system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy for refrigeration, and the absorption refrigeration system is connected with a user to supply cold; the circulating water heating system is connected with the electric heat storage heat source system and/or the organic Rankine cycle power generation system to utilize heat energy, and the circulating water heating system is connected with a user to heat.
2. A combined cooling, heating and power system according to claim 1, wherein the electric heat storage and heat source system comprises an electric heat storage device, the organic rankine cycle power generation system comprises an organic working medium evaporator, an expander and a generator, a water outlet of the electric heat storage device is connected with a water inlet of the organic working medium evaporator, and a water outlet of the organic working medium evaporator is connected with a water inlet of the electric heat storage device; the working medium outlet of the organic working medium evaporator is connected with the air inlet of the expander, the air outlet of the expander is connected with the working medium inlet of the organic working medium evaporator, and the power output end of the expander is connected with the generator; the generator is connected to the grid and/or to the user for supplying power.
3. A combined cooling, heating and power system as claimed in claim 2, wherein the electric heat storage heat source system further comprises a circulating water pump, and the circulating water pump is connected in series with the water inlet of the electric heat storage device.
4. A combined cooling, heating and power system as claimed in claim 2, wherein the absorption refrigeration system comprises an absorption refrigeration unit, a hot water inlet of the absorption refrigeration unit is connected with a water outlet of the electric heat storage device and/or a water outlet of the organic working medium evaporator, and a hot water outlet of the absorption refrigeration unit is connected with a water inlet of the electric heat storage device; and the refrigerant outlet of the absorption refrigerating unit is connected with the refrigerant inlet of a user, and the refrigerant inlet of the absorption refrigerating unit is connected with the refrigerant outlet of the user.
5. The combined cooling heating and power system according to claim 4, wherein the organic Rankine cycle power generation system further comprises a condenser, an air inlet of the condenser is connected with an air outlet of the expander, and a liquid outlet of the condenser is connected with a working medium inlet of the organic working medium evaporator; a first water inlet of the circulating water heating system is connected with a water outlet of the electric heat storage equipment and/or a water outlet of the condenser, and a first water outlet of the circulating water heating system is connected with a water inlet of a user; and a second water inlet of the circulating water heating system is connected with a water outlet of a user, and a second water outlet of the circulating water heating system is connected with a water inlet of the electric heat storage equipment and/or a water inlet of the condenser.
6. The combined cooling, heating and power system according to claim 5, wherein the organic Rankine cycle power generation system further comprises a gas-liquid separator, a liquid storage tank and a working medium pump; a working medium inlet of the gas-liquid separator is connected with a working medium outlet of the organic working medium evaporator, and an air outlet of the gas-liquid separator is connected with an air inlet of the expansion machine; a liquid inlet of the liquid storage tank is connected with a liquid outlet of the condenser, and a liquid outlet of the liquid storage tank is connected with a liquid inlet of the working medium pump; the working medium pump is connected in series with the working medium inlet of the organic working medium evaporator.
7. A combined cooling, heating and power system as claimed in claim 5, wherein a refrigerant circulating pump is connected in series to a pipeline between a refrigerant inlet of the absorption chiller and a refrigerant outlet of a user, and a heating circulating pump is connected in series to a pipeline between a water outlet of the user and a water inlet of the condenser.
8. The combined cooling, heating and power system according to any one of claims 1 to 7, further comprising a circulating water cooling system connected to an absorption refrigeration system and/or the organic Rankine cycle power generation system to provide cooling water.
9. A combined cooling, heating and power system according to claim 8, wherein the circulating water cooling system comprises a cooling tower and a cooling water circulating pump; the water inlet of the cooling tower is connected with the water outlet of the condenser and/or the cold water outlet of the absorption cooling unit, and the water outlet of the cooling tower is connected with the water inlet of the condenser and/or the cold water inlet of the absorption cooling unit; the cooling water circulating pump is connected in series with the water outlet of the cooling tower.
10. A combined cooling, heating and power system according to claim 8, wherein a valve for controlling on/off is provided in a pipe between the electric heat storage and heat source system, the organic rankine cycle power generation system, the absorption refrigeration system, the circulating water heating system, and the circulating water cooling system.
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