CN103776079B - A kind of power peak regulation cogeneration of heat and power waste-heat recovery device and operation method thereof - Google Patents
A kind of power peak regulation cogeneration of heat and power waste-heat recovery device and operation method thereof Download PDFInfo
- Publication number
- CN103776079B CN103776079B CN201410071808.9A CN201410071808A CN103776079B CN 103776079 B CN103776079 B CN 103776079B CN 201410071808 A CN201410071808 A CN 201410071808A CN 103776079 B CN103776079 B CN 103776079B
- Authority
- CN
- China
- Prior art keywords
- valve
- water
- outlet
- circulating pump
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 55
- 239000002918 waste heat Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 536
- 238000005485 electric heating Methods 0.000 claims abstract description 136
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 238000009825 accumulation Methods 0.000 claims abstract description 44
- 230000008676 import Effects 0.000 claims description 124
- 238000001816 cooling Methods 0.000 claims description 25
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 10
- 239000008400 supply water Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 13
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000005338 heat storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to a kind of power peak regulation cogeneration of heat and power waste-heat recovery device and operation method thereof, this device is made up of part and heat exchange station part in power plant: power plant comprises heat exchanger, waste heat recovery electric heating pump, accumulation of energy electric heating pump, high/low temperature water tank, heat exchangers for district heating, valve and water circulating pump inner dividing, heat exchange station part is mainly by high/low temperature water tank, electric heating pump, heat exchanger, valve and water circulating pump, its operation method is by different valve switch combinations, make it operate in respectively electric load low ebb, the flat peak of electric load and electric load peak period, utilize the difference between high temperature water tank balance sysmte heating load and thermic load, utilize Low Temperature Storage water pot to stablize exhaust steam residual heat yield, thereby solved generating that tradition " electricity determining by heat " operational mode causes and heat supply mutually coupling cause the problem of power generation peak adjusting limited ability, making cogeneration units can participate in network load regulates, not only can improve the situation that electrical network regulating power constantly increases with reply electric load peak-valley difference, and can improve the dissolve ability of electrical network to wind-power electricity generation, reduce the generation of " abandoning wind " phenomenon.
Description
Technical field
The present invention relates to a kind of heat-exchanger rig and operation method thereof, be specifically related to a kind of heat storage technology that utilizes and reclaim with cogeneration of heat and power and residual heat of electric power plant the power peak regulation cogeneration of heat and power waste-heat recovery device and the operation method thereof that combine, belong to energy source and power technical field.
Background technology
The northern area of China belongs to wind energy enrichment area, and wind-power electricity generation is positive fast-developing in these areas, installed capacity of wind-driven power increase year after year, and installed capacity of wind-driven power accounts for total installation of generating capacity ratio also to be increased year by year. But wind-power electricity generation has anti-part throttle characteristics,, during electrical network power load low ebb at night, wind-powered electricity generation is exerted oneself larger, and in the daytime during electrical network peak of power consumption, wind-powered electricity generation is exerted oneself less. Meanwhile, electric load peak-valley difference also, expanding year by year, makes peak load regulation network difficulties.
At present, the northern area of China urban heating still relies on coal-burning boiler in a large number, has caused the present situation of heat supply high energy consumption, high pollution. Cogeneration of heat and power is a kind of efficient heat-supplying mode, but the steam power plant of China moves in the mode of " electricity determining by heat ", many steam power plants are in order to ensure heat supply, its generated output adjustable range is greatly limited, the electric load low ebb phase its generating piezometric not under, thereby the space of having seized wind-powered electricity generation generating online, makes wind energy turbine set have to limit its generated output, causes serious " abandoning wind " phenomenon in northern wind-powered electricity generation enrichment area.
Adopt heat pump techniques to reclaim cogeneration units exhaust steam residual heat and can further improve thermoelectricity co-generating heat supplying efficiency, but the mode that cannot change its " electricity determining by heat " is moved; Adopt storage heater to combine with cogeneration of heat and power, utilize storage heater to stabilize heat supply and go out fluctuation, can make cogeneration units move in the mode of " with the fixed heat of electricity ", but in the time that exhaust steam of electric power plant heat recovery technology is combined, cannot ensure the stable recovery of exhaust steam of electric power plant waste heat.
Summary of the invention
For the problems referred to above, the object of this invention is to provide and utilize heat storage technology to reclaim with cogeneration of heat and power and residual heat of electric power plant the power peak regulation cogeneration of heat and power waste-heat recovery device and the operation method thereof that combine, to realize the electric peak regulating operation of cogeneration units on waste heat recovery basis.
For achieving the above object, the present invention takes following technical scheme: a kind of power peak regulation cogeneration of heat and power waste-heat recovery device, it is characterized in that, and this device is made up of part and heat exchange station part in power plant:
In described power plant, part is mainly made up of First Heat Exchanger (1), waste heat recovery electric heating pump (2), accumulation of energy electric heating pump (3), the first high temperature water tank (4), the first Low Temperature Storage water pot (5), heat exchangers for district heating (6), the first to the 9th valve (11-19) and first to fourth water circulating pump (20-23); Wherein, the import of described First Heat Exchanger (1) connects a secondary net water return pipeline (1-1), and the outlet of described First Heat Exchanger (1) is the import of the first valve in parallel (11), the second valve (12) and the first water circulating pump (20) respectively; The import of described waste heat recovery electric heating pump (2) connects the outlet of described the second valve (12), and the outlet of described waste heat recovery electric heating pump (2) connects the import of described heat exchangers for district heating (6); The outlet of the 3rd valve (13) respectively in parallel of top interface and the import of the 4th valve (14) of described the first high temperature water tank (4), the import of described the 3rd valve (13) connects the condensator outlet of described accumulation of energy electric heating pump (3), and the outlet of described the 4th valve (14) connects the import of described heat exchangers for district heating (6); The outlet of the 5th valve (15) respectively in parallel of the bottom interface of described the first high temperature water tank and the import of the second water circulating pump (21), the import of described the 5th valve (15) connects the outlet of described the first water circulating pump (20), and the outlet of described the second water circulating pump (21) connects the condenser inlet of described accumulation of energy electric heating pump (3) through the 6th valve (16); The outlet of top interface described first valve respectively in parallel (11) of described the first Low Temperature Storage water pot (5) and the import of the 7th valve (17), the outlet of described the 7th valve (17) connects the evaporator of described accumulation of energy electric heating pump (3); The outlet of the 8th valve (18) respectively in parallel of the bottom interface of described the first Low Temperature Storage water pot (5) and the import of the 3rd water circulating pump (22), the import of described the 8th valve (18) connects the evaporator outlet of described accumulation of energy electric heating pump (3) through the 4th water circulating pump (23), the outlet of described the 3rd water circulating pump (22) is through the import of the 9th valve (19) described First Heat Exchanger in parallel (1);
Described heat exchange station part is mainly made up of the second high temperature water tank (7), the second Low Temperature Storage water pot (8), electric heating pump (9), the second heat exchanger (10), the tenth to the 21 valve (24-35) and the 5th to the 6th water circulating pump (36-37), wherein, the outlet of the tenth valve (24) respectively in parallel of top interface and the import of the 5th water circulating pump (36) of described the second high temperature water tank (7), the import of described the tenth valve (24) connects the outlet of described heat exchangers for district heating (6) through a secondary net water supply line (1-2), the outlet of described the 5th water circulating pump (36) is connected the import of the 12 valve (26) after the 11 valve (25) is in parallel with a described secondary net water supply line (1-2), the outlet of described the 12 valve (26) connects a secondary net import of described the second heat exchanger (10), the 13 outlet of valve (27) respectively in parallel of the bottom interface of described the second high temperature water tank (7) and the import of the 14 valve (28), the import of described the 13 valve (27) connects a secondary net outlet of described the second heat exchanger (10), and the outlet of described the 14 valve (28) connects the evaporator of described electric heating pump (9), the top interface of described the second Low Temperature Storage water pot (8) is described the 13 outlet of valve (27) respectively in parallel and the import of the 14 valve (28) also, the 15 outlet of valve (29) respectively in parallel of the bottom interface of described the second Low Temperature Storage water pot (8) and the import of the 16 valve (30), the outlet of described the 16 valve (30) connects a described secondary net water return pipeline (1-1), the evaporator outlet of described electric heating pump (9) is through import and a described secondary net water return pipeline (1-1) of the 17 valve (31) the 6th water circulating pump (37) respectively in parallel, and the outlet of described the 6th water circulating pump (37) connects the import of described the 15 valve (29), the import of secondary network water return pipeline (1-3) the 18 valve (32) respectively in parallel and the 19 valve (33), the outlet of described the 18 valve (32) connects the secondary network import of described the second heat exchanger (10), the secondary network outlet of the outlet of described the 19 valve (33) and described the second heat exchanger (10) is the import of the 20 valve (34) in parallel and the 21 valve (35) respectively, the outlet connecting secondary net water supply line (1-4) of described the 21 valve (35), the outlet of described the 20 valve (34) connects the condenser inlet of described electric heating pump (9), the condensator outlet of described electric heating pump (9) connects described secondary network water supply line (1-4).
In a preferred embodiment, described First Heat Exchanger (1) adopts condenser or water-water heat exchanger.
In a preferred embodiment, described the second heat exchanger (10) adopts plate type heat exchanger or absorption heat exchange unit.
A kind of operation method of above-mentioned power peak regulation cogeneration of heat and power waste-heat recovery device, it is characterized in that, this operation method, by the combination of different valve switch, regulates this device method of operation, makes it operate in respectively electric load low ebb, the flat peak of electric load and electric load peak period:
1) electric load low-valley interval: part in power plant, close the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), open the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), a secondary net low temperature backwater of confessing through a secondary net water return pipeline (1-1) flows into First Heat Exchanger (1) and waste heat recovery electric heating pump (2) successively, First Heat Exchanger (1) and waste heat recovery electric heating pump (2) reclaim the exhaust steam residual heat of cogeneration units to heat a secondary net low temperature backwater, the hot net water obtaining through heating enters heat exchangers for district heating (6) after being flowed out by waste heat recovery electric heating pump (4), supplied water and flow into a secondary net water supply line (1-2) and confessed by draw gas a net height temperature being heated to obtain after heat supply network design temperature of cogeneration units, simultaneously, water storage in the first high temperature water tank (4) extracts and flows into the condenser of accumulation of energy electric heating pump (3) out from outlet at bottom through the second water circulating pump (21), after heating up, heat exchange gets back to the first high temperature water tank (4) from top inlet, water storage in the first Low Temperature Storage water pot (5) extrudes and flows into the evaporimeter of accumulation of energy electric heating pump (3) from top exit, after heat exchange cooling, introduce the first Low Temperature Storage water pot (5) through the 4th water circulating pump (23) from bottom inlet,
In heat exchange station part, close the 11 valve (25), the 12 valve (26), the 13 valve (27), the 16 valve (30), the 18 valve (32), the 21 valve (35) and the 5th water circulating pump (36), open all the other valves and the 6th water circulating pump (37), a net height temperature of confessing through a secondary net water supply line (1-2) supplies water and flows into the second high temperature water tank (7) from top inlet, a net height temperature supplies water to be stored in the second high temperature water tank (7) and by middle temperature water storage wherein and extrudes from outlet at bottom, then after mixing, flow into the evaporimeter of electric heating pump (9) with warm water storage from the second Low Temperature Storage water pot (8) top exit extrusion, after heat exchange cooling, flow out and be divided into two strands, one stock-traders' know-how the 6th water circulating pump (37) is introduced the second Low Temperature Storage water pot (8) from bottom inlet, another plume enters a secondary net water return pipeline (1-1), simultaneously, the flow through condenser of electric heating pump (9) of the secondary network low temperature backwater of confessing through secondary network water supply line (1-3), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user,
2) the electric load flat peak period: part is closed the 6th valve (16), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23) in power plant, accumulation of energy electric heating pump (3) is shut down, and remainder is identical with the electric load low-valley interval method of operation;
In heat exchange station part, close the tenth valve (24), the 11 valve (25), the 15 valve (29), the 16 valve (30), the 19 valve (33), the 21 valve (35) and the 6th water circulating pump (37), open all the other valves and the 5th water circulating pump (36), net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) and evaporimeter of electric heating pump (9) of flowing through successively that supply water, the secondary net low temperature backwater obtaining after heat exchange cooling flows into a secondary net water return pipeline (1-1), simultaneously, the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3) flow through successively the secondary network side of the second heat exchanger (10) and the condenser of electric heating pump (9), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user,
3) electric load peak period: part in power plant, close the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), open the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), the 3rd water circulating pump (22) is extracted the low temperature water storage in the first Low Temperature Storage water pot (5) out from outlet at bottom, after mixing with a secondary net low temperature backwater, send into First Heat Exchanger (1), First Heat Exchanger (1) reclaims the exhaust steam residual heat of cogeneration units with heating low-temperature mixed water, the hot net water obtaining after First Heat Exchanger (1) heating is divided into two strands, one gets back to the first Low Temperature Storage water pot (5) from top inlet, another stock-traders' know-how first water circulating pump (20) is introduced the first high temperature water tank (4) from bottom inlet, and the high temperature water storage in the first high temperature water tank (4) is delivered to heat exchangers for district heating (6) from top exit extrudes, confessed by a cogeneration units net height temperature being heated to obtain after the heat supply network design temperature inflow one secondary net water supply network (1-2) that supplies water that draws gas,
In heat exchange station part, close the tenth valve (24), the 14 valve (28), the 15 valve (29), the 17 valve (31), the 19 valve (33), the 20 valve (34) and the 6th water circulating pump (37), electric heating pump (9) is shut down, open all the other valves and the 5th water circulating pump (36), the 5th water circulating pump (36) is extracted the high temperature water storage in the second high temperature water tank (7) out from top exit, with net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) of flowing through after mixing that supplies water, the middle warm water obtaining after heat exchange cooling is divided into two strands, one flows into the second high temperature water tank (7) from bottom inlet, another strand flows into the second Low Temperature Storage water pot (8) and low temperature water storage wherein extruded from outlet at bottom from top inlet, the low temperature water storage being forced out enters a secondary net water return pipeline (1-1), simultaneously, the flow through secondary network side of the second heat exchanger (10) of the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user.
A kind of power peak regulation cogeneration of heat and power waste-heat recovery device, is characterized in that, this device is made up of part and heat exchange station part in power plant:
In described power plant, part is mainly made up of First Heat Exchanger (1), waste heat recovery electric heating pump (2), accumulation of energy electric heating pump (3), the first high temperature water tank (4), the first Low Temperature Storage water pot (5), heat exchangers for district heating (6), the first to the 9th valve (11-19) and first to fourth water circulating pump (20-23); Wherein, the import of described First Heat Exchanger (1) connects a secondary net water return pipeline (1-1), and the outlet of described First Heat Exchanger (1) is the import of the first valve in parallel (11), the second valve (12) and the first water circulating pump (20) respectively; The import of described waste heat recovery electric heating pump (2) connects the outlet of described the second valve (12), and the outlet of described waste heat recovery electric heating pump (2) connects the import of described heat exchangers for district heating (6); The outlet of the 3rd valve (13) respectively in parallel of top interface and the import of the 4th valve (14) of described the first high temperature water tank (4), the import of described the 3rd valve (13) connects the condensator outlet of described accumulation of energy electric heating pump (3), and the outlet of described the 4th valve (14) connects the import of described heat exchangers for district heating (6); The outlet of the 5th valve (15) respectively in parallel of the bottom interface of described the first high temperature water tank and the import of the second water circulating pump (21), the import of described the 5th valve (15) connects the outlet of described the first water circulating pump (20), and the outlet of described the second water circulating pump (21) connects the condenser inlet of described accumulation of energy electric heating pump (3) through the 6th valve (16); The outlet of top interface described first valve respectively in parallel (11) of described the first Low Temperature Storage water pot (5) and the import of the 7th valve (17), the outlet of described the 7th valve (17) connects the evaporator of described accumulation of energy electric heating pump (3); The outlet of the 8th valve (18) respectively in parallel of the bottom interface of described the first Low Temperature Storage water pot (5) and the import of the 3rd water circulating pump (22), the import of described the 8th valve (18) connects the evaporator outlet of described accumulation of energy electric heating pump (3) through the 4th water circulating pump (23), the outlet of described the 3rd water circulating pump (22) is through the import of the 9th valve (19) described First Heat Exchanger in parallel (1);
Described heat exchange station part is mainly made up of the second Low Temperature Storage water pot (8), electric heating pump (9), the second heat exchanger (10), the 12 to the 21 valve (26-35) and the 6th water circulating pump (37), wherein, the import of the 12 valve (26) connects the outlet of described heat exchangers for district heating (6) through a secondary net water supply line (1-2), the outlet of described the 12 valve (26) connects a secondary net import of described the second heat exchanger (10), the 13 outlet of valve (27) respectively in parallel of top interface and the import of the 14 valve (28) of described the second Low Temperature Storage water pot (8), the import of described the 13 valve (27) connects a secondary net outlet of described the second heat exchanger (10), and the outlet of described the 14 valve (28) connects the evaporator of described electric heating pump (9), the 15 outlet of valve (29) respectively in parallel of the bottom interface of described the second Low Temperature Storage water pot (8) and the import of the 16 valve (30), the outlet of described the 16 valve (30) connects a described secondary net water return pipeline (1-1), the evaporator outlet of described electric heating pump (9) is through import and a described secondary net water return pipeline (1-1) of the 17 valve (31) described the 6th water circulating pump (37) respectively in parallel, and the outlet of described the 6th water circulating pump (37) connects the import of described the 15 valve (29), the import of secondary network water return pipeline (1-3) the 18 valve (32) respectively in parallel and the 19 valve (33), the outlet of described the 18 valve (32) connects the secondary network import of described the second heat exchanger (10), the secondary network outlet of the outlet of described the 19 valve (33) and described the second heat exchanger (10) is the import of the 20 valve (34) in parallel and the 21 valve (35) respectively, the outlet connecting secondary net water supply line (1-4) of described the 21 valve (35), the outlet of described the 20 valve (34) connects the condenser inlet of described electric heating pump (9), the condensator outlet of described electric heating pump (9) connects described secondary network water supply line (1-4).
In a preferred embodiment, described First Heat Exchanger (1) adopts condenser or water-water heat exchanger.
In a preferred embodiment, described the second heat exchanger (10) adopts plate type heat exchanger or absorption heat exchange unit.
A kind of operation method of above-mentioned power peak regulation cogeneration of heat and power waste-heat recovery device, it is characterized in that, this operation method, by the combination of different valve switch, regulates this device method of operation, makes it operate in respectively electric load low ebb, the flat peak of electric load and electric load peak period:
1) electric load low-valley interval: part in power plant, close the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), open the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), a secondary net low temperature backwater of confessing through a secondary net water return pipeline (1-1) flows into First Heat Exchanger (1) and waste heat recovery electric heating pump (2) successively, heat exchanger (1) and waste heat recovery electric heating pump (2) reclaim the exhaust steam residual heat of cogeneration units to heat a secondary net low temperature backwater, the hot net water obtaining through heating enters heat exchangers for district heating (6) after being flowed out by waste heat recovery electric heating pump (4), supplied water and flow into a secondary net water supply line (1-2) and confessed by draw gas a net height temperature being heated to obtain after heat supply network design temperature of cogeneration units, simultaneously, water storage in the first high temperature water tank (4) extracts and flows into the condenser of accumulation of energy electric heating pump (3) out from outlet at bottom through the second water circulating pump (21), after heating up, heat exchange gets back to the first high temperature water tank (4) from top inlet, water storage in the first Low Temperature Storage water pot (5) extrudes and flows into the evaporimeter of accumulation of energy electric heating pump (3) from top exit, after heat exchange cooling, introduce the first Low Temperature Storage water pot (5) through the 4th water circulating pump (23) from bottom inlet,
In heat exchange station part, close the 16 valve (30), the 19 valve (33), the 21 valve (35), open all the other valves and the 6th water circulating pump (37), net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) of first flowing through that supplies water, after heat exchange cooling with flow through after the mixing evaporimeter of electric heating pump (9) of warm water storage from the second Low Temperature Storage water pot (8) top exit extrusion, through further flowing out and be divided into two strands after heat exchange cooling, one is introduced the second Low Temperature Storage water pot (8) by the 6th water circulating pump (37) from bottom inlet, another plume enters a secondary net water return pipeline (1-1), simultaneously, first the flow through secondary network side of the second heat exchanger (10) of the secondary network low temperature backwater of confessing through secondary network water supply line (1-3), flow through after heat exchange the heats up condenser of electric heating pump (9), is sent to hot user through the secondary network high temperature that further heat exchange obtains after the heating up inflow secondary network water supply line (1-4) that supplies water,
2) the electric load flat peak period: part in power plant, close the 6th valve (16), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), accumulation of energy electric heating pump (3) is shut down, and remainder is identical with the electric load low-valley interval method of operation;
In heat exchange station part, close the 15 valve (29), the 16 valve (30), the 19 valve (33), the 21 valve (35) and the 6th water circulating pump (37), open all the other valves, net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) and evaporimeter of electric heating pump (9) of flowing through successively that supply water, the secondary net low temperature backwater obtaining after heat exchange cooling flows into a secondary net water return pipeline (1-1); Simultaneously, the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3) flow through successively the secondary network side of the second heat exchanger (10) and the condenser of electric heating pump (9), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user;
3) electric load peak period: part in power plant, close the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), open the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), the 3rd water circulating pump (22) is extracted the low temperature water storage in the first Low Temperature Storage water pot (5) out from outlet at bottom, after mixing with a secondary net low temperature backwater, send into First Heat Exchanger (1), First Heat Exchanger (1) reclaims the exhaust steam residual heat of cogeneration units with heating low-temperature mixed water, the hot net water obtaining after First Heat Exchanger (1) heating is divided into two strands, one gets back to the first Low Temperature Storage water pot (5) from top inlet, another stock-traders' know-how first water circulating pump (20) is introduced the first high temperature water tank (4) from bottom inlet, and the high temperature water storage in the first high temperature water tank (4) is delivered to heat exchangers for district heating (6) from top exit extrudes, confessed by a cogeneration units net height temperature being heated to obtain after the heat supply network design temperature inflow one secondary net water supply network (1-2) that supplies water that draws gas,
In heat exchange station part, close the 14 valve (28), the 15 valve (29), the 17 valve (31), the 19 valve (33), the 20 valve (34) and the 6th water circulating pump (37), electric heating pump (9) is shut down, open all the other valves, net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) of flowing through that supplies water, after heat exchange cooling, all flow into the second Low Temperature Storage water pot (8), low temperature water storage in the second Low Temperature Storage water pot (8) is extruded and delivers to a secondary net water return pipeline (1-1) from outlet at bottom, simultaneously, the flow through secondary network side of the second heat exchanger (10) of the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, waste-heat recovery device of the present invention is made up of jointly part and heat exchange station part in power plant, and in power plant, in part, comprise by accumulation of energy electric heating pump, high temperature water tank, Low Temperature Storage water pot, the exoergic system of holding that valve and water circulating pump form, on electric load peak, during low ebb and flat peak, electric heating pump by part and the intermittent duty of heat exchange station part in power plant regulates power plant's generated output and heat exchange station power load, utilize the difference between high temperature water tank balance sysmte heating load and thermic load, utilize Low Temperature Storage water pot to stablize exhaust steam residual heat yield, thereby significantly improve the power peak regulation ability of steam power plant, solved generating that co-generation unit traditional " electricity determining by heat " operational mode causes and heat supply mutually coupling cause the problem of power generation peak adjusting limited ability, make cogeneration units can regulate its generating online power, participation network load regulates, not only can improve the situation that electrical network regulating power constantly increases with reply electric load peak-valley difference, and can improve the dissolve ability of electrical network to wind-power electricity generation, reduce the generation of " abandoning wind " phenomenon. 2, waste-heat recovery device of the present invention can partly or entirely reclaim cogeneration units exhaust steam residual heat, in significantly promoting steam power plant's heat capacity, also significantly improves the efficiency of energy utilization of system. 3, the present invention has also realized a secondary net " large the temperature difference " heat supply, enlarges markedly supply backwater temperature difference not changing a secondary net flow simultaneously, promotes original pipe network heat capacity and exceedes 50%, can realize extra long distance simultaneously and carry.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is carried out to detailed describing. But only the providing in order to understand better the present invention of accompanying drawing is provided, they not should be understood to limitation of the present invention.
Fig. 1 is the overall structure schematic diagram of waste-heat recovery device of the present invention;
Fig. 2 is the structural representation of the another kind of heat exchange station part of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, device of the present invention is made up of jointly part and heat exchange station part in power plant.
In power plant, part is mainly made up of condenser/water-water heat exchanger 1, waste heat recovery electric heating pump 2, accumulation of energy electric heating pump 3, high temperature water tank 4, Low Temperature Storage water pot 5, heat exchangers for district heating 6, valve 11-19 and water circulating pump 20-23. Wherein, the import of condenser/water-water heat exchanger 1 connects a secondary net water return pipeline 1-1, and the outlet of condenser/water-water heat exchanger 1 is the import of valve 11 in parallel, valve 12 and water circulating pump 20 respectively. The import of waste heat recovery electric heating pump 2 connects the outlet of valve 12, and the outlet of waste heat recovery electric heating pump 2 connects the import of heat exchangers for district heating 6. The outlet of valve 13 in parallel and the import of valve 14 respectively of the top interface of high temperature water tank 4, the import of valve 13 connects the condensator outlet of accumulation of energy electric heating pump 3, and the outlet of valve 14 connects the import of heat exchangers for district heating 6. The bottom interface of high temperature water tank 4 is the outlet of valve 15 in parallel and the import of water circulating pump 21 respectively, and the import of valve 15 connects the outlet of water circulating pump 20, and the outlet of water circulating pump 21 connects the condenser inlet of accumulation of energy electric heating pump 3 through valve 16. The outlet of valve 11 in parallel and the import of valve 17 respectively of the top interface of Low Temperature Storage water pot 5, the outlet of valve 17 connects the evaporator of accumulation of energy electric heating pump 3. The bottom interface of Low Temperature Storage water pot 5 is the outlet of valve 18 in parallel and the import of water circulating pump 22 respectively, the import of valve 18 connects the evaporator outlet of accumulation of energy electric heating pump 3 through water circulating pump 23, the outlet of water circulating pump 22 is through the import of valve 19 condenser/water-water heat exchanger 1 in parallel.
Heat exchange station part is mainly made up of high temperature water tank 7, Low Temperature Storage water pot 8, electric heating pump 9, plate type heat exchanger 10, valve 24-35 and water circulating pump 36-37. Wherein, the outlet of valve 24 in parallel and the import of water circulating pump 36 respectively of the top interface of high temperature water tank 7, the import of valve 24 connects the outlet of heat exchangers for district heating 6 through a secondary net water supply line 1-2, the outlet of water circulating pump 36 is connected the import of valve 26, a secondary net import of the outlet connecting plate type heat exchanger 10 of valve 26 after a secondary net water supply line 1-2 parallel connection through valve 25. The bottom interface of high temperature water tank 7 is the outlet of valve 27 in parallel and the import of valve 28 respectively, a secondary net outlet of the import connecting plate type heat exchanger 10 of valve 27, and the outlet of valve 28 connects the evaporator of electric heating pump 9. The top interface of Low Temperature Storage water pot 8 is also distinguished the outlet of valve 27 in parallel and the import of valve 28, and the bottom interface of Low Temperature Storage water pot 8 is the outlet of valve 29 in parallel and the import of valve 30 respectively, and the outlet of valve 30 connects a secondary net water return pipeline 1-1. The evaporator outlet of electric heating pump 9 is through valve 31 import and a secondary net water return pipeline 1-1 of parallel circulating water pump 37 respectively, and the outlet of water circulating pump 37 connects the import of valve 29. The import of secondary network water return pipeline 1-3 difference valve 32 in parallel and valve 33, the secondary network import of the outlet connecting plate type heat exchanger 10 of valve 32, the secondary network outlet of the outlet of valve 33 and plate type heat exchanger 10 is the import of valve 34 in parallel and valve 35 respectively, the outlet connecting secondary net water supply line 1-4 of valve 35, the outlet of valve 34 connects the condenser inlet of electric heating pump 9, the condensator outlet connecting secondary net water supply line 1-4 of electric heating pump 9.
In a preferred embodiment, in heat exchange station part, plate type heat exchanger 10 can be replaced with to absorption heat exchange unit, to reduce the evaporimeter inflow temperature of electric heating pump 9, thus the power consumption of minimizing electric heating pump 9.
Power peak regulation cogeneration of heat and power waste-heat recovery device based on providing in above-described embodiment, the invention allows for a kind of power peak regulation cogeneration of heat and power exhaust heat recovering method, the method is by different valve switch combinations, regulate this device method of operation, make it operate in respectively electric load low ebb, the flat peak of electric load and electric load peak period:
1, electric load low-valley interval: part in power plant, valve-off 11, valve 14, valve 15, valve 19, water circulating pump 20 and water circulating pump 22, Open valve 12, valve 13, valve 16, valve 17, valve 18, water circulating pump 21 and water circulating pump 23, a secondary net low temperature backwater of confessing through a secondary net water return pipeline 1-1 flows into condenser/water-water heat exchanger 1 and waste heat recovery electric heating pump 2 successively, condenser/water-water heat exchanger 1 and waste heat recovery electric heating pump 2 reclaim the exhaust steam residual heat of cogeneration units to heat a secondary net low temperature backwater, after being flowed out by waste heat recovery electric heating pump 4, the hot net water obtaining through heating enters heat exchangers for district heating 6, supplied water and flow into a secondary net water supply line 1-2 and confessed by draw gas a net height temperature being heated to obtain after heat supply network design temperature of cogeneration units, simultaneously, water storage in high temperature water tank 4 extracts and flows into the condenser of accumulation of energy electric heating pump 3 out from outlet at bottom through water circulating pump 21, after heating up, heat exchange gets back to high temperature water tank 4 from top inlet, water storage in Low Temperature Storage water pot 5 extrudes and flows into the evaporimeter of accumulation of energy electric heating pump 3 from top exit, after heat exchange cooling, introduce Low Temperature Storage water pot 5 through water circulating pump 23 from bottom inlet.
In heat exchange station part, valve-off 25, valve 26, valve 27, valve 30, valve 32, valve 35 and water circulating pump 36, open all the other valves and water circulating pump 37, a net height temperature of confessing through a secondary net water supply line 1-2 supplies water and flows into high temperature water tank 7 from top inlet, a net height temperature supplies water to be stored in high temperature water tank 7 and by middle temperature water storage wherein and extrudes from outlet at bottom, then with extrude from Low Temperature Storage water pot 8 top exits flow through after the mixing evaporimeter of electric heating pump 9 of warm water storage, after heat exchange cooling, flow out and be divided into two strands, one stock-traders' know-how water circulating pump 37 is introduced Low Temperature Storage water pot 8 from bottom inlet, another plume enters a secondary net water return pipeline 1-1, simultaneously, the flow through condenser of electric heating pump 9 of the secondary network low temperature backwater of confessing through secondary network water supply line 1-3, the secondary network high temperature obtaining after the middle temperature water storage heat exchange of flowing out with high temperature water tank 7 and Low Temperature Storage water pot 8 heats up supplies water and flows into secondary network water supply line 1-4 and be sent to hot user.
2, the electric load flat peak period: part valve-off 16, valve 18, water circulating pump 21 and water circulating pump 23 in power plant, accumulation of energy electric heating pump 3 is shut down, and remainder is identical with the electric load low-valley interval method of operation;
In heat exchange station part, valve-off 24, valve 25, valve 29, valve 30, valve 33, valve 35 and water circulating pump 37, open all the other valves and water circulating pump 36, net height temperature confessing through a secondary net water supply line 1-2 secondary net side of plate type heat exchanger 10 and evaporimeter of electric heating pump 9 of flowing through successively that supply water, the secondary net low temperature backwater obtaining after heat exchange cooling flows into a secondary net water return pipeline 1-1; The secondary network low temperature backwater of confessing through secondary network water return pipeline 1-3 flow through successively the secondary network side of plate type heat exchanger 10 and the condenser of electric heating pump 9, supply water and flow into secondary network water supply line 1-4 and be sent to hot user with the supply water secondary network high temperature that carries out obtaining after heat exchange of net height temperature, now the start capacity of electric heating pump 9 is less than the start capacity of electric load low-valley interval electric heating pump 9.
3, electric load peak period: part in power plant, valve-off 12, valve 13, valve 16, valve 17, valve 18, water circulating pump 21 and water circulating pump 23, Open valve 11, valve 14, valve 15, valve 19, water circulating pump 20 and water circulating pump 22, water circulating pump 22 is extracted the low temperature water storage in Low Temperature Storage water pot 5 out from outlet at bottom, after mixing with a secondary net low temperature backwater, send into condenser or water-water heat exchanger 1, condenser/water-water heat exchanger 1 reclaims the exhaust steam residual heat of cogeneration units with heating low-temperature mixed water, the unnecessary electric load low ebb of exhaust steam residual heat amount and the flat peak of the electric load period of now reclaiming by condenser/water-water heat exchanger 1, the hot net water obtaining after 1 heating of condenser/water-water heat exchanger is divided into two strands, one gets back to Low Temperature Storage water pot 5 from top inlet, another stock-traders' know-how water circulating pump 20 is introduced high temperature water tank 4 from bottom inlet, and the high temperature water storage in high temperature water tank 4 is delivered to heat exchangers for district heating 6 from top exit extrudes, confessed by a cogeneration units net height temperature being heated to obtain after the heat supply network design temperature inflow one secondary net water supply network 1-2 that supplies water that draws gas.
In heat exchange station part, valve-off 24, valve 28, valve 29, valve 31, valve 33, valve 34 and water circulating pump 37, electric heating pump 9 is shut down, open all the other valves and water circulating pump 36, water circulating pump 36 is extracted the high temperature water storage in high temperature water tank 7 out from top exit, with net height temperature confessing through secondary net water supply line 1-2 secondary net side of plate type heat exchanger 10 of flowing through after mixing that supplies water, the middle warm water obtaining after heat exchange cooling is divided into two strands, one flows into high temperature water tank 7 from bottom inlet, another strand flows into Low Temperature Storage water pot 8 and low temperature water storage wherein extruded from outlet at bottom from top inlet, the low temperature water storage being forced out enters a secondary net water return pipeline 1-1, the flow through secondary network side of plate type heat exchanger 10 of the secondary network low temperature backwater of confessing through secondary network water return pipeline 1-3, the secondary network high temperature obtaining after heating up with the heat exchange of high temperature mixing water supplies water and flows into secondary network water supply line 1-4 and be sent to hot user.
In a preferred embodiment, as shown in Figure 2, heat exchange station part also can not arrange high-temperature heat accumulation tank 7, under this method of operation, although within electric load low ebb, the flat peak of electric load and electric load peak period, heat exchange station part heating load difference, but can utilize building thermal inertia to maintain indoor temperature meets human body comfort demand:
At electric load low-valley interval, heat exchange station part valve-off 30, valve 33, valve 35, open all the other valves and water circulating pump 37, heat exchange station part no longer stores a net height temperature and supplies water, a net height temperature supplies water and directly flows through plate type heat exchanger 10 and mix the rear evaporimeter that flows into electric heating pump 9 with warm water storage from the 8 top exits extrusion of Low Temperature Storage water pot, after heat exchange cooling, flow out and be divided into two strands, one is recycled water pump 37 and introduces Low Temperature Storage water pot 8 from bottom inlet, and another plume enters a secondary net water return pipeline 1-1. Simultaneously, first the flow through secondary network side of plate type heat exchanger 10 of the secondary network low temperature backwater of confessing through secondary network water supply line 1-3, flow through after heat exchange the heats up condenser of electric heating pump 9, flow into secondary network water supply line 1-4 through the secondary network high temperature water supply that further heat exchange obtains after heating up and be sent to hot user, now electric heating pump 9 oeprations at full load.
In the flat peak of the electric load period, heat exchange station part valve-off 29, valve 30, valve 33 and valve 35 and water circulating pump 37, open all the other valves, Low Temperature Storage water pot 8 no longer participates in accumulation of heat or exothermic process, net height temperature confessing through a secondary net water supply line 1-2 secondary net side of plate type heat exchanger 10 and evaporimeter of electric heating pump 9 of flowing through successively that supply water, the secondary net low temperature backwater obtaining after heat exchange cooling flows into a secondary net water return pipeline 1-1. Simultaneously, the secondary network low temperature backwater of confessing through secondary network water return pipeline 1-3 flow through successively the secondary network side of plate type heat exchanger 10 and the condenser of electric heating pump 9, the secondary network high temperature water supply obtaining after heat exchange heats up flows into secondary network water supply line 1-4 and is sent to hot user, but now electric heating pump 9 operations at part load.
In electric load peak period; heat exchange station part valve-off 28, valve 29, valve 31, valve 33, valve 34 and water circulating pump 37; electric heating pump 9 is shut down; open all the other valves; net height temperature confessing through secondary net water supply line 1-2 secondary net side of plate type heat exchanger 10 of flowing through that supplies water; after heat exchange cooling, all flow into Low Temperature Storage water pot 8, the low temperature water storage in Low Temperature Storage water pot 8 is extruded and delivers to a secondary net water return pipeline 1-1 from outlet at bottom. Meanwhile, the flow through secondary network side of plate type heat exchanger 10 of the secondary network low temperature backwater of confessing through secondary network water return pipeline 1-3, the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line 1-4 and be sent to hot user.
The various embodiments described above are only for further describing object of the present invention, technical scheme and beneficial effect; be not limited to the present invention; within the spirit and principles in the present invention all; any amendment of making, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Claims (8)
1. a power peak regulation cogeneration of heat and power waste-heat recovery device, is characterized in that, this device is made up of part and heat exchange station part in power plant:
In described power plant, part is mainly made up of First Heat Exchanger (1), waste heat recovery electric heating pump (2), accumulation of energy electric heating pump (3), the first high temperature water tank (4), the first Low Temperature Storage water pot (5), heat exchangers for district heating (6), the first to the 9th valve (11-19) and first to fourth water circulating pump (20-23); Wherein, the import of described First Heat Exchanger (1) connects a secondary net water return pipeline (1-1), and the outlet of described First Heat Exchanger (1) is the import of the first valve in parallel (11), the second valve (12) and the first water circulating pump (20) respectively; The import of described waste heat recovery electric heating pump (2) connects the outlet of described the second valve (12), and the outlet of described waste heat recovery electric heating pump (2) connects the import of described heat exchangers for district heating (6); The outlet of the 3rd valve (13) respectively in parallel of top interface and the import of the 4th valve (14) of described the first high temperature water tank (4), the import of described the 3rd valve (13) connects the condensator outlet of described accumulation of energy electric heating pump (3), and the outlet of described the 4th valve (14) connects the import of described heat exchangers for district heating (6); The outlet of the 5th valve (15) respectively in parallel of the bottom interface of described the first high temperature water tank and the import of the second water circulating pump (21), the import of described the 5th valve (15) connects the outlet of described the first water circulating pump (20), and the outlet of described the second water circulating pump (21) connects the condenser inlet of described accumulation of energy electric heating pump (3) through the 6th valve (16); The outlet of top interface described first valve respectively in parallel (11) of described the first Low Temperature Storage water pot (5) and the import of the 7th valve (17), the outlet of described the 7th valve (17) connects the evaporator of described accumulation of energy electric heating pump (3); The outlet of the 8th valve (18) respectively in parallel of the bottom interface of described the first Low Temperature Storage water pot (5) and the import of the 3rd water circulating pump (22), the import of described the 8th valve (18) connects the evaporator outlet of described accumulation of energy electric heating pump (3) through the 4th water circulating pump (23), the outlet of described the 3rd water circulating pump (22) is through the import of the 9th valve (19) described First Heat Exchanger in parallel (1);
Described heat exchange station part is mainly made up of the second high temperature water tank (7), the second Low Temperature Storage water pot (8), electric heating pump (9), the second heat exchanger (10), the tenth to the 21 valve (24-35) and the 5th to the 6th water circulating pump (36-37), wherein, the outlet of the tenth valve (24) respectively in parallel of top interface and the import of the 5th water circulating pump (36) of described the second high temperature water tank (7), the import of described the tenth valve (24) connects the outlet of described heat exchangers for district heating (6) through a secondary net water supply line (1-2), the outlet of described the 5th water circulating pump (36) is connected the import of the 12 valve (26) after the 11 valve (25) is in parallel with a described secondary net water supply line (1-2), the outlet of described the 12 valve (26) connects a secondary net import of described the second heat exchanger (10), the 13 outlet of valve (27) respectively in parallel of the bottom interface of described the second high temperature water tank (7) and the import of the 14 valve (28), the import of described the 13 valve (27) connects a secondary net outlet of described the second heat exchanger (10), and the outlet of described the 14 valve (28) connects the evaporator of described electric heating pump (9), the top interface of described the second Low Temperature Storage water pot (8) is described the 13 outlet of valve (27) respectively in parallel and the import of the 14 valve (28) also, the 15 outlet of valve (29) respectively in parallel of the bottom interface of described the second Low Temperature Storage water pot (8) and the import of the 16 valve (30), the outlet of described the 16 valve (30) connects a described secondary net water return pipeline (1-1), the evaporator outlet of described electric heating pump (9) is through import and a described secondary net water return pipeline (1-1) of the 17 valve (31) the 6th water circulating pump (37) respectively in parallel, and the outlet of described the 6th water circulating pump (37) connects the import of described the 15 valve (29), the import of secondary network water return pipeline (1-3) the 18 valve (32) respectively in parallel and the 19 valve (33), the outlet of described the 18 valve (32) connects the secondary network import of described the second heat exchanger (10), the secondary network outlet of the outlet of described the 19 valve (33) and described the second heat exchanger (10) is the import of the 20 valve (34) in parallel and the 21 valve (35) respectively, the outlet connecting secondary net water supply line (1-4) of described the 21 valve (35), the outlet of described the 20 valve (34) connects the condenser inlet of described electric heating pump (9), the condensator outlet of described electric heating pump (9) connects described secondary network water supply line (1-4).
2. a kind of power peak regulation cogeneration of heat and power waste-heat recovery device as claimed in claim 1, is characterized in that, described First Heat Exchanger (1) adopts condenser or water-water heat exchanger.
3. a kind of power peak regulation cogeneration of heat and power waste-heat recovery device as claimed in claim 1 or 2, is characterized in that, described the second heat exchanger (10) adopts plate type heat exchanger or absorption heat exchange unit.
4. a power peak regulation cogeneration of heat and power waste-heat recovery device, is characterized in that, this device is made up of part and heat exchange station part in power plant:
In described power plant, part is mainly made up of First Heat Exchanger (1), waste heat recovery electric heating pump (2), accumulation of energy electric heating pump (3), the first high temperature water tank (4), the first Low Temperature Storage water pot (5), heat exchangers for district heating (6), the first to the 9th valve (11-19) and first to fourth water circulating pump (20-23); Wherein, the import of described First Heat Exchanger (1) connects a secondary net water return pipeline (1-1), and the outlet of described First Heat Exchanger (1) is the import of the first valve in parallel (11), the second valve (12) and the first water circulating pump (20) respectively; The import of described waste heat recovery electric heating pump (2) connects the outlet of described the second valve (12), and the outlet of described waste heat recovery electric heating pump (2) connects the import of described heat exchangers for district heating (6); The outlet of the 3rd valve (13) respectively in parallel of top interface and the import of the 4th valve (14) of described the first high temperature water tank (4), the import of described the 3rd valve (13) connects the condensator outlet of described accumulation of energy electric heating pump (3), and the outlet of described the 4th valve (14) connects the import of described heat exchangers for district heating (6); The outlet of the 5th valve (15) respectively in parallel of the bottom interface of described the first high temperature water tank and the import of the second water circulating pump (21), the import of described the 5th valve (15) connects the outlet of described the first water circulating pump (20), and the outlet of described the second water circulating pump (21) connects the condenser inlet of described accumulation of energy electric heating pump (3) through the 6th valve (16); The outlet of top interface described first valve respectively in parallel (11) of described the first Low Temperature Storage water pot (5) and the import of the 7th valve (17), the outlet of described the 7th valve (17) connects the evaporator of described accumulation of energy electric heating pump (3); The outlet of the 8th valve (18) respectively in parallel of the bottom interface of described the first Low Temperature Storage water pot (5) and the import of the 3rd water circulating pump (22), the import of described the 8th valve (18) connects the evaporator outlet of described accumulation of energy electric heating pump (3) through the 4th water circulating pump (23), the outlet of described the 3rd water circulating pump (22) is through the import of the 9th valve (19) described First Heat Exchanger in parallel (1);
Described heat exchange station part is mainly made up of the second Low Temperature Storage water pot (8), electric heating pump (9), the second heat exchanger (10), the 12 to the 21 valve (26-35) and the 6th water circulating pump (37), wherein, the import of the 12 valve (26) connects the outlet of described heat exchangers for district heating (6) through a secondary net water supply line (1-2), the outlet of described the 12 valve (26) connects a secondary net import of described the second heat exchanger (10), the 13 outlet of valve (27) respectively in parallel of top interface and the import of the 14 valve (28) of described the second Low Temperature Storage water pot (8), the import of described the 13 valve (27) connects a secondary net outlet of described the second heat exchanger (10), and the outlet of described the 14 valve (28) connects the evaporator of described electric heating pump (9), the 15 outlet of valve (29) respectively in parallel of the bottom interface of described the second Low Temperature Storage water pot (8) and the import of the 16 valve (30), the outlet of described the 16 valve (30) connects a described secondary net water return pipeline (1-1), the evaporator outlet of described electric heating pump (9) is through import and a described secondary net water return pipeline (1-1) of the 17 valve (31) described the 6th water circulating pump (37) respectively in parallel, and the outlet of described the 6th water circulating pump (37) connects the import of described the 15 valve (29), the import of secondary network water return pipeline (1-3) the 18 valve (32) respectively in parallel and the 19 valve (33), the outlet of described the 18 valve (32) connects the secondary network import of described the second heat exchanger (10), the secondary network outlet of the outlet of described the 19 valve (33) and described the second heat exchanger (10) is the import of the 20 valve (34) in parallel and the 21 valve (35) respectively, the outlet connecting secondary net water supply line (1-4) of described the 21 valve (35), the outlet of described the 20 valve (34) connects the condenser inlet of described electric heating pump (9), the condensator outlet of described electric heating pump (9) connects described secondary network water supply line (1-4).
5. a kind of power peak regulation cogeneration of heat and power waste-heat recovery device as claimed in claim 4, is characterized in that, described First Heat Exchanger (1) adopts condenser or water-water heat exchanger.
6. a kind of power peak regulation cogeneration of heat and power waste-heat recovery device as described in claim 4 or 5, is characterized in that, described the second heat exchanger (10) adopts plate type heat exchanger or absorption heat exchange unit.
7. the operation method of a power peak regulation cogeneration of heat and power waste-heat recovery device as described in claim 1 to 3 any one, it is characterized in that, this operation method is by different valve switch combinations, regulate this device method of operation, make it operate in respectively electric load low ebb, the flat peak of electric load and electric load peak period:
1) electric load low-valley interval: part in power plant, close the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), open the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), a secondary net low temperature backwater of confessing through a secondary net water return pipeline (1-1) flows into First Heat Exchanger (1) and waste heat recovery electric heating pump (2) successively, First Heat Exchanger (1) and waste heat recovery electric heating pump (2) reclaim the exhaust steam residual heat of cogeneration units to heat a secondary net low temperature backwater, the hot net water obtaining through heating enters heat exchangers for district heating (6) after being flowed out by waste heat recovery electric heating pump (4), supplied water and flow into a secondary net water supply line (1-2) and confessed by draw gas a net height temperature being heated to obtain after heat supply network design temperature of cogeneration units, simultaneously, water storage in the first high temperature water tank (4) extracts and flows into the condenser of accumulation of energy electric heating pump (3) out from outlet at bottom through the second water circulating pump (21), after heating up, heat exchange gets back to the first high temperature water tank (4) from top inlet, water storage in the first Low Temperature Storage water pot (5) extrudes and flows into the evaporimeter of accumulation of energy electric heating pump (3) from top exit, after heat exchange cooling, introduce the first Low Temperature Storage water pot (5) through the 4th water circulating pump (23) from bottom inlet,
In heat exchange station part, close the 11 valve (25), the 12 valve (26), the 13 valve (27), the 16 valve (30), the 18 valve (32), the 21 valve (35) and the 5th water circulating pump (36), open all the other valves and the 6th water circulating pump (37), a net height temperature of confessing through a secondary net water supply line (1-2) supplies water and flows into the second high temperature water tank (7) from top inlet, a net height temperature supplies water to be stored in the second high temperature water tank (7) and by middle temperature water storage wherein and extrudes from outlet at bottom, then after mixing, flow into the evaporimeter of electric heating pump (9) with warm water storage from the second Low Temperature Storage water pot (8) top exit extrusion, after heat exchange cooling, flow out and be divided into two strands, one stock-traders' know-how the 6th water circulating pump (37) is introduced the second Low Temperature Storage water pot (8) from bottom inlet, another plume enters a secondary net water return pipeline (1-1), simultaneously, the flow through condenser of electric heating pump (9) of the secondary network low temperature backwater of confessing through secondary network water supply line (1-3), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user,
2) the electric load flat peak period: part is closed the 6th valve (16), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23) in power plant, accumulation of energy electric heating pump (3) is shut down, and remainder is identical with the electric load low-valley interval method of operation;
In heat exchange station part, close the tenth valve (24), the 11 valve (25), the 15 valve (29), the 16 valve (30), the 19 valve (33), the 21 valve (35) and the 6th water circulating pump (37), open all the other valves and the 5th water circulating pump (36), net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) and evaporimeter of electric heating pump (9) of flowing through successively that supply water, the secondary net low temperature backwater obtaining after heat exchange cooling flows into a secondary net water return pipeline (1-1), simultaneously, the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3) flow through successively the secondary network side of the second heat exchanger (10) and the condenser of electric heating pump (9), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user,
3) electric load peak period: part in power plant, close the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), open the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), the 3rd water circulating pump (22) is extracted the low temperature water storage in the first Low Temperature Storage water pot (5) out from outlet at bottom, after mixing with a secondary net low temperature backwater, send into First Heat Exchanger (1), First Heat Exchanger (1) reclaims the exhaust steam residual heat of cogeneration units with heating low-temperature mixed water, the hot net water obtaining after First Heat Exchanger (1) heating is divided into two strands, one gets back to the first Low Temperature Storage water pot (5) from top inlet, another stock-traders' know-how first water circulating pump (20) is introduced the first high temperature water tank (4) from bottom inlet, and the high temperature water storage in the first high temperature water tank (4) is delivered to heat exchangers for district heating (6) from top exit extrudes, confessed by a cogeneration units net height temperature being heated to obtain after the heat supply network design temperature inflow one secondary net water supply network (1-2) that supplies water that draws gas,
In heat exchange station part, close the tenth valve (24), the 14 valve (28), the 15 valve (29), the 17 valve (31), the 19 valve (33), the 20 valve (34) and the 6th water circulating pump (37), electric heating pump (9) is shut down, open all the other valves and the 5th water circulating pump (36), the 5th water circulating pump (36) is extracted the high temperature water storage in the second high temperature water tank (7) out from top exit, with net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) of flowing through after mixing that supplies water, the middle warm water obtaining after heat exchange cooling is divided into two strands, one flows into the second high temperature water tank (7) from bottom inlet, another strand flows into the second Low Temperature Storage water pot (8) and low temperature water storage wherein extruded from outlet at bottom from top inlet, the low temperature water storage being forced out enters a secondary net water return pipeline (1-1), simultaneously, the flow through secondary network side of the second heat exchanger (10) of the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user.
8. the operation method of a power peak regulation cogeneration of heat and power waste-heat recovery device as described in claim 4 to 6 any one, it is characterized in that, this operation method is by different valve switch combinations, regulate this device method of operation, make it operate in respectively electric load low ebb, the flat peak of electric load and electric load peak period:
1) electric load low-valley interval: part in power plant, close the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), open the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), a secondary net low temperature backwater of confessing through a secondary net water return pipeline (1-1) flows into First Heat Exchanger (1) and waste heat recovery electric heating pump (2) successively, heat exchanger (1) and waste heat recovery electric heating pump (2) reclaim the exhaust steam residual heat of cogeneration units to heat a secondary net low temperature backwater, the hot net water obtaining through heating enters heat exchangers for district heating (6) after being flowed out by waste heat recovery electric heating pump (4), supplied water and flow into a secondary net water supply line (1-2) and confessed by draw gas a net height temperature being heated to obtain after heat supply network design temperature of cogeneration units, simultaneously, water storage in the first high temperature water tank (4) extracts and flows into the condenser of accumulation of energy electric heating pump (3) out from outlet at bottom through the second water circulating pump (21), after heating up, heat exchange gets back to the first high temperature water tank (4) from top inlet, water storage in the first Low Temperature Storage water pot (5) extrudes and flows into the evaporimeter of accumulation of energy electric heating pump (3) from top exit, after heat exchange cooling, introduce the first Low Temperature Storage water pot (5) through the 4th water circulating pump (23) from bottom inlet,
In heat exchange station part, close the 16 valve (30), the 19 valve (33), the 21 valve (35), open all the other valves and the 6th water circulating pump (37), net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) of first flowing through that supplies water, after heat exchange cooling with flow through after the mixing evaporimeter of electric heating pump (9) of warm water storage from the second Low Temperature Storage water pot (8) top exit extrusion, through further flowing out and be divided into two strands after heat exchange cooling, one is introduced the second Low Temperature Storage water pot (8) by the 6th water circulating pump (37) from bottom inlet, another plume enters a secondary net water return pipeline (1-1), simultaneously, first the flow through secondary network side of the second heat exchanger (10) of the secondary network low temperature backwater of confessing through secondary network water supply line (1-3), flow through after heat exchange the heats up condenser of electric heating pump (9), is sent to hot user through the secondary network high temperature that further heat exchange obtains after the heating up inflow secondary network water supply line (1-4) that supplies water,
2) the electric load flat peak period: part in power plant, close the 6th valve (16), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), accumulation of energy electric heating pump (3) is shut down, and remainder is identical with the electric load low-valley interval method of operation;
In heat exchange station part, close the 15 valve (29), the 16 valve (30), the 19 valve (33), the 21 valve (35) and the 6th water circulating pump (37), open all the other valves, net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) and evaporimeter of electric heating pump (9) of flowing through successively that supply water, the secondary net low temperature backwater obtaining after heat exchange cooling flows into a secondary net water return pipeline (1-1); Simultaneously, the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3) flow through successively the secondary network side of the second heat exchanger (10) and the condenser of electric heating pump (9), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user;
3) electric load peak period: part in power plant, close the second valve (12), the 3rd valve (13), the 6th valve (16), the 7th valve (17), the 8th valve (18), the second water circulating pump (21) and the 4th water circulating pump (23), open the first valve (11), the 4th valve (14), the 5th valve (15), the 9th valve (19), the first water circulating pump (20) and the 3rd water circulating pump (22), the 3rd water circulating pump (22) is extracted the low temperature water storage in the first Low Temperature Storage water pot (5) out from outlet at bottom, after mixing with a secondary net low temperature backwater, send into First Heat Exchanger (1), First Heat Exchanger (1) reclaims the exhaust steam residual heat of cogeneration units with heating low-temperature mixed water, the hot net water obtaining after First Heat Exchanger (1) heating is divided into two strands, one gets back to the first Low Temperature Storage water pot (5) from top inlet, another stock-traders' know-how first water circulating pump (20) is introduced the first high temperature water tank (4) from bottom inlet, and the high temperature water storage in the first high temperature water tank (4) is delivered to heat exchangers for district heating (6) from top exit extrudes, confessed by a cogeneration units net height temperature being heated to obtain after the heat supply network design temperature inflow one secondary net water supply network (1-2) that supplies water that draws gas,
In heat exchange station part, close the 14 valve (28), the 15 valve (29), the 17 valve (31), the 19 valve (33), the 20 valve (34) and the 6th water circulating pump (37), electric heating pump (9) is shut down, open all the other valves, net height temperature confessing through a secondary net water supply line (1-2) secondary net side of the second heat exchanger (10) of flowing through that supplies water, after heat exchange cooling, all flow into the second Low Temperature Storage water pot (8), low temperature water storage in the second Low Temperature Storage water pot (8) is extruded and delivers to a secondary net water return pipeline (1-1) from outlet at bottom, simultaneously, the flow through secondary network side of the second heat exchanger (10) of the secondary network low temperature backwater of confessing through secondary network water return pipeline (1-3), the secondary network high temperature obtaining after heat exchange heats up supplies water and flows into secondary network water supply line (1-4) and be sent to hot user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071808.9A CN103776079B (en) | 2014-02-28 | 2014-02-28 | A kind of power peak regulation cogeneration of heat and power waste-heat recovery device and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071808.9A CN103776079B (en) | 2014-02-28 | 2014-02-28 | A kind of power peak regulation cogeneration of heat and power waste-heat recovery device and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103776079A CN103776079A (en) | 2014-05-07 |
| CN103776079B true CN103776079B (en) | 2016-05-18 |
Family
ID=50568625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410071808.9A Active CN103776079B (en) | 2014-02-28 | 2014-02-28 | A kind of power peak regulation cogeneration of heat and power waste-heat recovery device and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103776079B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10001326B2 (en) | 2014-02-28 | 2018-06-19 | Tsinghua University | Electric power peak-shaving and combined heat and power waste heat recovery device and operation method thereof |
| CN104454304B (en) * | 2014-10-31 | 2017-01-11 | 清华大学 | Pumped storage power generation system and method based on steam and air pressurization |
| CN105371343B (en) * | 2015-11-19 | 2018-01-26 | 内蒙古电力勘测设计院有限责任公司 | Utilize the boilers heated electrically storage heating system and usage thereof for abandoning wind and abandoning light heat supply |
| CN106196697B (en) * | 2016-07-28 | 2018-07-31 | 华北电力大学 | Thermoelectricity unit and its peak regulating method associated with steam drive heat pump and regenerative apparatus |
| CN106287902B (en) * | 2016-07-28 | 2019-08-30 | 华北电力大学 | Cogeneration units and its peak regulating method associated with electric heat pump and regenerative apparatus |
| CN106352388A (en) * | 2016-09-05 | 2017-01-25 | 华北电力大学 | Electric heat pump and heat storage device combined thermal station system |
| CN106401679B (en) * | 2016-09-28 | 2018-06-15 | 东莞市联洲知识产权运营管理有限公司 | A kind of thermoelectricity unit with peak regulation heat accumulation function |
| CN106765455A (en) * | 2016-11-28 | 2017-05-31 | 中能服能源科技股份有限公司 | A kind of energy-saving heat storage and heat supply system |
| CN107218639B (en) * | 2017-04-28 | 2020-02-07 | 大唐东北电力试验研究所有限公司 | Optimal control method for deep peak shaving of cogeneration unit in heat storage tank mode |
| CN106989430B (en) * | 2017-05-17 | 2022-07-19 | 清华大学 | Central heating system capable of integrally utilizing industrial waste heat and use method thereof |
| CN108361797B (en) * | 2018-02-11 | 2020-01-14 | 清华大学 | High-temperature heat storage type electric power peak regulation cogeneration waste heat recovery device and method |
| CN108592140B (en) * | 2018-05-08 | 2020-02-18 | 南京酷朗电子有限公司 | System for reducing return water temperature of heat supply pipeline |
| CN109869205B (en) * | 2019-03-26 | 2020-06-02 | 清华大学 | Heat storage, power generation and heat supply system for cogeneration unit |
| CN109882910B (en) * | 2019-04-16 | 2023-10-24 | 华北电力大学 | Coupling heat pump type heating power station for realizing electric power peak regulation |
| CN115095894A (en) * | 2022-08-29 | 2022-09-23 | 中国能源建设集团山西省电力勘测设计院有限公司 | Full recycling method for dead steam of low-pressure cylinder in peak regulation operation of cogeneration unit in heating period |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028861A1 (en) * | 2003-09-24 | 2005-03-31 | Alekseevich Alexander N | Independent system of energy and heat supply |
| CN101236035A (en) * | 2008-03-06 | 2008-08-06 | 清华大学 | Absorption type heat pump heat supply system possessing flue gas condensation heat reclamation function |
-
2014
- 2014-02-28 CN CN201410071808.9A patent/CN103776079B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028861A1 (en) * | 2003-09-24 | 2005-03-31 | Alekseevich Alexander N | Independent system of energy and heat supply |
| CN101236035A (en) * | 2008-03-06 | 2008-08-06 | 清华大学 | Absorption type heat pump heat supply system possessing flue gas condensation heat reclamation function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103776079A (en) | 2014-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103776079B (en) | A kind of power peak regulation cogeneration of heat and power waste-heat recovery device and operation method thereof | |
| KR102198868B1 (en) | Electric power peak-shaving and combined heat and power waste heat recovery device and operation method thereof | |
| CN108258679B (en) | Electric-thermal comprehensive energy system optimization scheduling method considering heat storage characteristics of heat supply network | |
| CN106845701B (en) | A kind of integrated energy system optimization method based on heat supply network and house thermal inertia | |
| CN109958593B (en) | Solar energy coal-fired coupling flexible power generation system and operation method | |
| CN108625911B (en) | Thermodynamic system for improving electric output adjusting capacity of heat supply unit | |
| CN102331110B (en) | Regional heating, cooling and power combined energy system and method based on absorption heat exchange | |
| CN102359739B (en) | Gas-steam circulation heating-electricity-cooling combined supply system and method for thermal power plant with zero energy loss rate | |
| CN202209817U (en) | District cooling, heating and power combined energy system based on absorption heat exchange | |
| CN109184916A (en) | The method of comprehensive energy router device and energy conversion | |
| CN108266777A (en) | A kind of power peak regulation gas cogeneration waste-heat recovery device and method | |
| CN202267113U (en) | Combined gas-steam cycle cooling, heating and power system with zero energy loss rate for heat and power plant | |
| CN106613531A (en) | Photovoltaic photo-thermal integrated circulation system for greenhouse | |
| CN206176510U (en) | Central heating secondary network peaking unit | |
| CN207797182U (en) | Thermal power cogeneration central heating system based on absorption big temperature difference heat-exchange unit | |
| CN208983454U (en) | A kind of Regional Energy system | |
| CN203548082U (en) | Multi-level heat utilization device of solar energy and biomass energy | |
| CN203517958U (en) | Photo-thermal solar energy and valley wind power combined heating system | |
| CN115727384A (en) | Heat supply system for realizing peak regulation and cross-season heat storage of thermoelectric unit and operation method | |
| CN109442533A (en) | A kind of solid heat storage electric boiler heating and refrigerating system of Coupled Dynamic energy storage | |
| CN212132923U (en) | Heating system based on solar energy and geothermal energy combined power generation system | |
| CN105258204B (en) | The hot water Supply Method and system that the first kind is coupled with second-kind absorption-type heat pump | |
| CN110397979B (en) | Cold, heat and electricity triple supply new energy storage energy supply and peak shaving system | |
| CN102878035B (en) | Multi-level solar generates electricity with other energy complementary thermals and polygenerations systeme | |
| CN102865203B (en) | Factory farming multi-level solar generates electricity with other energy complementary thermals and polygenerations systeme |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |