CN212902091U - Active energy storage type all-year supply system of centralized heat supply network - Google Patents
Active energy storage type all-year supply system of centralized heat supply network Download PDFInfo
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- CN212902091U CN212902091U CN202021109302.XU CN202021109302U CN212902091U CN 212902091 U CN212902091 U CN 212902091U CN 202021109302 U CN202021109302 U CN 202021109302U CN 212902091 U CN212902091 U CN 212902091U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 193
- 238000010438 heat treatment Methods 0.000 claims abstract description 116
- 238000005338 heat storage Methods 0.000 claims abstract description 58
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 239000003507 refrigerant Substances 0.000 claims description 66
- 238000009825 accumulation Methods 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 abstract description 8
- 238000003860 storage Methods 0.000 abstract description 7
- 230000001932 seasonal effect Effects 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 101000878595 Arabidopsis thaliana Squalene synthase 1 Proteins 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model provides a concentrate heat supply network initiative energy storage type supply system all the year, including heat source, hold/release heat unit, hot user etc. wherein hold/release the circulation route that forms first heat medium in the heat unit for the heat that acquires is located from the heat source to the storage or draw, and/or to hot user distributes first heat medium. The system can realize active heat storage and recovery of low-grade waste heat, realize cross-season storage and utilization of heat, avoid seasonal waste of energy and improve energy utilization efficiency. The system has different seasonal operation modes, can realize the supply of hot water and the heating in winter all the year round, and can also realize the cooling in summer.
Description
Technical Field
The utility model relates to an energy and environmental protection field, especially a heat supply system.
Background
The production and consumption of the power plant are synchronously completed, and in non-heating seasons, the waste heat of the exhaust steam of the power plant lacks a means for storage and utilization, and is mostly released and dissipated into the atmosphere, so that the energy waste is caused, and therefore, the energy of the power plant has great energy-saving potential from the analysis of an optimization perspective. Meanwhile, the living hot water, central heating or cooling and the like of residents often need to consume additional energy.
For example, domestic hot water needs to be heated locally at a water-using location by a small heater for use by a local range of users. Of course, there is a domestic hot water centralized supply system, for example, a district boiler room for centralized supply of domestic hot water, but such a system has problems in that: the domestic hot water demand is discontinuous, and has great fluctuation, therefore maintains and adjusts and control the degree of difficulty great.
The centralized heat supply of residents is usually supplied by a residential boiler room or a municipal heat supply network, and the boiler room or the municipal heat supply network needs to burn coal, gas and the like to generate heat. The cooling of the residents requires the air conditioner to consume electric energy to complete.
Therefore, a system which makes full use of the waste heat of the power plant and realizes the integral supply of domestic hot water and cold and warm for residents is lacked in the prior art.
SUMMERY OF THE UTILITY MODEL
To the not enough and defect that prior art exists, the utility model provides a concentrate heat accumulation type heat supply system, the system includes: a heat source, a heat storage/release unit, a heat user;
a circulation passage of the first heating medium is formed in the heat accumulation/release unit and is used for accumulating or extracting heat and/or distributing the first heating medium to the heat users; the heat storage/release unit comprises a heat storage module, a water supply main pipe, a water return main pipe, a plurality of pipelines and valves; the first heating medium exchanges heat with the heat exchange equipment of the heat source and obtains heat, and then the first heating medium is divided into two branches:
one branch enters the heat storage module through a pipeline and stores heat in the heat storage module, and then returns to the heat exchange device of the heat source to complete a cycle;
the other branch enters the water supply main pipe through a pipeline and then is divided into two branches:
one branch pipe flows back to the water return main pipe through a pipeline and flows back to the heat exchange equipment of the heat source to complete a cycle;
the other branch passes through the heat consumer through a pipeline and releases heat, and then flows back to the water return main pipe and the heat exchange equipment of the heat source to complete a cycle;
the refrigerant enters the heat consumer through the pipeline and absorbs the heat of the first heating medium, and then the refrigerant is supplied to the consumer and meets the demand of the consumer.
Further, the heat source comprises a dead steam condenser, a boiler, a steam turbine and a peak heater; steam generated by the boiler enters the steam turbine and works to generate power, exhaust steam generated by the steam turbine enters the exhaust steam condenser and is condensed in the exhaust steam condenser, heat is transferred to a first heating medium, and then the first heating medium returns to the boiler; the steam extracted from the steam turbine enters a spike heater and transfers heat to a first heating medium and then enters the boiler;
the first heating medium enters the spike heater and exchanges heat before entering the water supply main pipe.
Furthermore, the hot users comprise domestic hot water hot users, and the second refrigerant enters the domestic hot water hot users through a pipeline and enters the water end equipment after being heated.
Further, the system also comprises a heat pump unit and a cooling tower;
the heat pump unit comprises an evaporator, a compressor, a first condenser, a second condenser and a throttle valve; the evaporator, the compressor, the first condenser, the second condenser and the throttle valve are connected in series to form a circulation passage of refrigerant;
the hot users comprise hot living water users and cold/hot living water users;
the second refrigerant is divided into two paths: one branch enters a domestic hot water hot user through a pipeline, is heated and then enters water end equipment; the other branch enters the second condenser, is heated and then enters the domestic hot water heating user, and enters the water end equipment after being heated;
natural refrigerant circulates between the cooling tower and the first condenser and takes away heat of the first condenser;
the first refrigerant circulates between the cold/hot user and the evaporator, the evaporator is used for cooling the first refrigerant, and the first refrigerant provides cold energy for the cold/hot user.
The utility model also provides a centralized heat storage type heat supply system, which comprises a heat source, a heat storage/release unit and a heat user;
a circulation passage of the first heating medium is formed in the heat accumulation/release unit and is used for accumulating or extracting heat and/or distributing the first heating medium to the heat users; the heat storage/release unit comprises a heat storage module, a water supply main pipe, a water return main pipe, a plurality of pipelines and valves; the first heating medium exchanges heat with the heat exchange equipment of the heat source, obtains heat, then enters the water supply main pipe, and then is divided into two branches:
one branch pipe flows back to the water return main pipe through a pipeline;
the other branch pipe flows through the hot user and releases heat, and then flows back to the water return main pipe;
a first heating medium flowing back from a return water main pipe enters the heat storage module, extracts heat stored in the heat storage module, and then enters heat exchange equipment of the heat source through a pipeline to complete a cycle;
the second refrigerant enters the heat consumer through a pipeline and absorbs the heat of the first heating medium, and then the second refrigerant is supplied to the consumer and meets the demand of the consumer.
Further, the heat source comprises a dead steam condenser, a boiler, a steam turbine and a peak heater; steam generated by the boiler enters the steam turbine and works to generate power, exhaust steam generated by the steam turbine enters the exhaust steam condenser and is condensed in the exhaust steam condenser, heat is transferred to a first heating medium, and then the first heating medium returns to the boiler; the steam extracted from the steam turbine enters a spike heater and transfers heat to a first heating medium and then enters the boiler;
the first heating medium enters the spike heater and exchanges heat before entering the water supply main pipe.
Further, the system also comprises a heat pump unit and a cooling tower;
the heat pump unit comprises an evaporator, a compressor, a first condenser, a second condenser and a throttle valve; the evaporator, the compressor, the first condenser, the second condenser and the throttle valve are connected in series to form a circulation passage of refrigerant;
the hot users comprise hot domestic water users, cold/hot users and hot heating users;
the second refrigerant is divided into two paths: one branch enters a domestic hot water hot user through a pipeline, is heated and then enters water end equipment; the other branch enters the second condenser, is heated and then enters the domestic hot water heating user, and enters the water end equipment after being heated;
natural refrigerant circulates between the cooling tower and the first condenser and takes away heat of the first condenser;
a first refrigerant circulates between the cold/hot user and the evaporator, the evaporator is used for cooling the first refrigerant, and the first refrigerant provides cold energy for the cold/hot user;
the branch flowing from the water supply main pipe through the hot user is divided into two branches:
one branch pipe flows through the domestic hot water users through a pipeline, releases heat and then flows back to the water return main pipe;
the other branch passes through the heating heat consumer through a pipeline and releases heat, then enters the evaporator through the pipeline, is cooled and then flows back to the water return main pipe through the pipeline;
and a second heating medium enters the first condenser, is heated and then enters the heating users through the pipeline to release heat, then enters the cold/hot users to further release heat, then flows out, and then returns to the heating users partially, and enters the first condenser through the pipeline to complete a cycle.
Further, the heat storage module is an underground pipe or a heat storage water body.
The utility model provides a centralized heat storage type heat supply system which can realize the heat storage and utilization across seasons through the buried pipe or the heat storage water body, and has different operation modes in different seasons, thereby realizing the hot water supply in the whole year, the cooling in summer and the heating in winter; the seasonal heat storage of the system can greatly improve the energy utilization rate of the heat source and further exert the waste heat value.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed to be used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 illustrates an embodiment of a concentrated heat storage heat supply system according to a first aspect of the present invention;
FIG. 2 illustrates a second aspect of an embodiment of a concentrated heat storage heat supply system according to the present invention;
FIG. 3 illustrates a third embodiment of a concentrated heat storage heat supply system according to the present invention;
icon: 101-a dead steam condenser; 102-a boiler; 103-a steam turbine; 104-spike heaters; 201-a heat storage module; 202a water main pipe; 202 b-a backwater main pipe; 301-hot users of domestic hot water; 302-cold/warm user; 303-heating users; 401-an evaporator; 402-a compressor; 403-a first condenser; 404-a second condenser; 405-a throttle valve; 500-a cooling tower; l1 — first conduit; l2 — second conduit; l3 — third conduit; l4 — fourth conduit; l5-fifth conduit; l6-sixth conduit; l7-seventh conduit; l8-eighth conduit; l9-ninth conduit; l10-tenth conduit; l11 — eleventh conduit; l12-twelfth conduit; l13-thirteenth conduit; l14-fourteenth conduit; l15-fifteenth conduit; l16-sixteenth conduit; l17-seventeenth conduit; l18-eighteenth pipe; l19-nineteenth pipe; l20-twentieth pipe; l21-twenty-first pipe; l22-twenty-second conduit; l23-twenty-third conduit; l24-twenty-four conduits; v1 — first valve; v2 — second valve; v3-third valve; v4-fourth valve; v5-fifth valve; v6-sixth valve; v7-seventh valve; v8-eighth valve; v9-ninth valve; v10-tenth valve; v11 — eleventh valve; P1-Water Pump.
Detailed Description
The structure and operation of the invention will be described in further detail with reference to the accompanying drawings, it being understood that the drawings are provided only for the purpose of better understanding of the invention, and that they are not to be considered as limiting the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second," if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The utility model discloses a concentrate heat accumulation type heat supply system, the system includes: heat source, heat accumulation/release unit, heat consumer.
A circulation passage of the first heating medium is formed in the heat accumulation/release unit and is used for accumulating or extracting heat and/or distributing the first heating medium to the heat users; the heat storage/release unit includes a heat storage module, a water supply main pipe 202a, a water return main pipe 202b, a plurality of pipes, and valves.
The heat storage/release unit in the system in the embodiment operates in a heat storage mode, is particularly suitable for spring, summer and autumn, and can realize seasonal heat storage and provide domestic hot water for users.
As shown in fig. 1, the seventh valve V7 is closed, and the first to eleventh valves V1 to V11 are opened.
The first heating medium exchanges heat with the heat exchange equipment of the heat source and obtains heat, and then the first heating medium is divided into two branches:
one of the branches L4 enters the thermal storage module 201 and stores heat in the thermal storage module 201, and then returns to the heat exchange device of the heat source and completes one cycle;
the other branch L1, L6 enters the water main pipe 202a and then is divided into two branches:
one branch L8 flows back to the return main pipe 202b and flows back to the heat exchange equipment of the heat source to complete a cycle;
the other branch L12 flows through the hot user and releases heat, then back to the return main pipe 202b and back to the heat exchange equipment of the heat source and completes a cycle.
The refrigerant enters the heat consumer through a pipeline and absorbs the heat of the first heating medium, and then the refrigerant is supplied to the consumer and meets the demand of the consumer.
In particular, the heat source is particularly suitable for industrial waste heat sources such as power plants and the like. The heat source comprises a dead steam condenser 101, a boiler 102, a steam turbine 103 and a spike heater 104; steam generated by the boiler enters the steam turbine 103 and works to generate power, dead steam generated by the steam turbine 103 enters the dead steam condenser 101 and is condensed in the dead steam condenser, heat is transferred to a first heating medium, and then the first heating medium returns to the boiler 102; steam extracted from turbine 103 enters spike heater 104 and transfers heat to the first heating medium, which then enters boiler 102.
The first heating medium enters the spike heater 104 and exchanges heat before entering the water main 202 a.
The hot users include a domestic hot water hot user 301, and the second refrigerant enters the domestic hot water hot user 301 through a fourteenth pipeline L14 and a fifteenth pipeline L15 and enters water end equipment after being heated.
The heat storage module is specifically a buried pipe or a heat storage water body.
Specifically, the first heating medium absorbing the waste heat of the dead steam is divided into two paths from a first water outlet of the dead steam condenser 101: one path enters the peak heater 104 through the first pipeline L1 and the third water inlet, can continuously absorb steam heat in the peak heater to raise the temperature, then enters the water supply main pipe 202a through the third water outlet and the sixteenth pipeline L6, enters the buried pipe through the third pipeline L3, exchanges heat with soil in the buried pipe, stores waste heat in the exhaust steam in the soil, then joins with the first heating medium of the water return main pipe through the third pipeline L3, enters the exhaust steam condenser 101 through the first water inlet, and enters the next heat storage cycle.
The outlet of the water supply main pipe 202a is divided into two branches, one branch is communicated with the return water main pipe 202b through an eighth pipeline L8, the other branch enters the domestic hot water user 301 through a twelfth pipeline L12, heat exchange is carried out between the domestic hot water user 301 and a second refrigerant in a heat exchanger, a first heat medium after heat exchange enters the return water main pipe 202b through a ninth pipeline L9, is converged with a first heat medium at the water outlet of the buried pipe 201, enters the steam exhaust condenser through a second pipeline L2 and enters the next domestic hot water heating cycle.
It can be understood that, since the domestic hot water supply has a large fluctuation in different periods, the water supply main pipe 202a and the water return main pipe 202b can be used for short-term heat storage to meet the maximum demand of the user.
The second refrigerant enters the domestic hot water user 301 through a fourteenth pipeline L14 and a fifteenth pipeline L15, a water pump P1 is arranged on a fifteenth pipeline L15, the second refrigerant exchanges heat with the first heating medium in a heat exchanger of the domestic hot water user 301, the second refrigerant is heated, and the second refrigerant is conveyed to a water end device from a fifth water outlet of the domestic hot water user 301 through a sixteenth pipeline L16 to form an open passage of the second refrigerant, so that domestic hot water supply of the user is realized.
Specifically, the domestic hot water heat exchanger is a dividing wall type heat exchanger.
Second embodiment
The embodiment discloses a concentrated heat storage type heat supply system, which comprises a heat source, a heat storage/release unit and a heat user.
A circulation passage of the first heating medium is formed in the heat accumulation/release unit and is used for accumulating or extracting heat and/or distributing the first heating medium to the heat users; the heat storage/release unit includes a heat storage module 201, a water supply main pipe 202a, a water return main pipe 202b, a plurality of pipes and valves.
The first heating medium exchanges heat with the heat exchange equipment of the heat source and obtains heat, and then the first heating medium is divided into two branches:
one of the branches L4 enters the thermal storage module 201 and stores heat in the thermal storage module 201, and then returns to the heat exchange device of the heat source and completes one cycle;
the other branch L1, L6 enters the water main pipe 202a and then is divided into two branches:
one branch L8 flows back to the return main pipe 202b and flows back to the heat exchange equipment of the heat source to complete a cycle;
the other branch L12 flows through the hot user and releases heat, then back to the return main pipe 202b and back to the heat exchange equipment of the heat source and completes a cycle.
The refrigerant enters the heat consumer through a pipeline and absorbs the heat of the first heating medium, and then the refrigerant is supplied to the consumer and meets the demand of the consumer.
In particular, the heat source is particularly suitable for industrial waste heat sources such as power plants and the like. The heat source comprises a dead steam condenser 101, a boiler 102, a steam turbine 103 and a spike heater 104; steam generated by the boiler enters the steam turbine 103 and works to generate power, dead steam generated by the steam turbine 103 enters the dead steam condenser 101 and is condensed in the dead steam condenser, heat is transferred to a first heating medium, and then the first heating medium returns to the boiler 102; steam extracted from turbine 103 enters spike heater 104 and transfers heat to the first heating medium, which then enters boiler 102.
The first heating medium enters the spike heater 104 and exchanges heat before entering the water main 202 a.
Specifically, the first heating medium absorbing the waste heat of the dead steam is divided into two paths from a first water outlet of the dead steam condenser 101: one path enters the peak heater 104 through the first pipeline L1 and the third water inlet, can continuously absorb steam heat in the peak heater to raise the temperature, then enters the water supply main pipe 202a through the third water outlet and the sixth pipeline L6, and enters the buried pipe through the third pipeline L3, and exchanges heat with soil in the buried pipe, so that the waste heat in the exhaust steam is stored in the soil, and then joins with the first heating medium of the water return main pipe through the third pipeline L3, enters the exhaust steam condenser 101 through the first water inlet, and enters the next heat storage cycle.
Unlike the first embodiment, the second embodiment can supply cold while seasonal heat storage and domestic hot water to the user are realized. This embodiment is particularly useful in summer. The system in this embodiment further includes a heat pump unit and a cooling tower 500.
As shown in fig. 2, the seventh valve V7 and the eleventh valve V11 are closed, and the remaining valves (V1, V2, V3, V4, V5, V6, V8, V9, V10) are opened.
The heat pump unit includes an evaporator 401, a compressor 402, a first condenser 403, a second condenser 404, a throttle valve 405; the evaporator 401, the compressor 402, the first condenser 403, the second condenser 404 and the throttle valve 405 are connected in series to form a circulation path of the refrigerant.
The hot users include a domestic hot water hot user 301 and a cold/hot user 302 having both a demand for cold and a demand for hot.
The second refrigerant is divided into two paths: one branch enters a domestic hot water heating user 301 through a fifteenth pipeline L15 and enters water end equipment after being heated; the other branch enters the second condenser 404, is heated and then enters the domestic hot water heating user 301, and enters the water end equipment after being heated.
A natural refrigerant circulates between the cooling tower 500 and the first condenser 403 and takes heat of the first condenser 403.
A first refrigerant circulates between the cold/hot user 302 and the evaporator 401, and the evaporator 401 is used for cooling the first refrigerant, and the first refrigerant provides cold energy for the cold/hot user 302.
Specifically, the eleventh valve V11 is closed, the second refrigerant enters the second condenser 404 through the fourteenth pipeline L14, absorbs heat of the refrigerant in the second condenser, after the second refrigerant is initially heated, the second refrigerant enters the fifteenth pipeline L15 through the twelfth water outlet of the second condenser, and the water pump P1 provides power to deliver the second refrigerant to the domestic hot water and hot water user 301;
an eighth water inlet of the evaporator 401 is communicated with a ninth water outlet of the cold consumer 302 through a nineteenth pipeline L19, and the eighth water outlet of the evaporator 401 is communicated with the ninth water inlet of the cold consumer 302 through a pipeline L20' to form a first refrigerant circulation loop for providing cold energy to the cold consumer;
the tenth water inlet of the first condenser 403 is communicated with the water outlet of the cooling tower 500 through a twenty-fifth pipeline L25, and the tenth water outlet of the first condenser 403 is communicated with the water inlet of the cooling tower 500 through a twenty-fourth pipeline L24, so as to form a natural refrigerant circulation loop for transferring heat to the external atmosphere.
Third embodiment
Unlike the first and second embodiments, the heat storage unit of the system realizes heat release across seasons, provides hot water for life, provides heat for users, and can simultaneously provide cold. This embodiment is particularly suitable for use in the heating season.
As shown in fig. 3, the first valve V1, the third valve V3, and the eleventh valve V11 are closed, and the remaining valves (V2, V3, V4, V5, V6, V7, V8, V9, and V10) are opened.
The system in this embodiment includes a heat source, an accumulation/release unit, and a heat consumer.
A circulation passage of the first heating medium is formed in the heat accumulation/release unit and is used for accumulating or extracting heat and/or distributing the first heating medium to the heat users; the heat storage/release unit comprises a heat storage module, a water supply main pipe 202a, a water return main pipe 202b, a plurality of pipelines and valves; the first heating medium exchanges heat with the heat exchange device of the heat source and obtains heat, and then enters the water supply main pipe 202a, and then is divided into two branches:
one branch L8 flows back to the return main trunk pipe 202 b;
the other branch passes through the hot user and releases heat, and then flows back to the water return main pipe 202 b;
the first heating medium flowing back from the return water main pipe 202b enters the heat storage module and extracts the heat stored therein and then enters the heat exchange device of the heat source through a pipeline and completes a cycle.
The second refrigerant enters the heat consumer through a pipeline and absorbs the heat of the first heating medium, and then the second refrigerant is supplied to the consumer and meets the demand of the consumer.
The heat source comprises a dead steam condenser 101, a boiler 102, a steam turbine 103 and a spike heater 104; steam generated by the boiler enters the steam turbine 103 and works to generate power, dead steam generated by the steam turbine 103 enters the dead steam condenser 101 and is condensed in the dead steam condenser, heat is transferred to a first heating medium, and then the first heating medium returns to the boiler 102; the steam extracted from the steam turbine 103 enters the spike heater 104 and transfers heat to the first heating medium, and then enters the boiler 102;
the first heating medium enters the spike heater 104 and exchanges heat before entering the water main 202 a.
The system also includes a heat pump unit, a cooling tower 500.
The heat pump unit includes an evaporator 401, a compressor 402, a first condenser 403, a second condenser 404, a throttle valve 405; the evaporator 401, the compressor 402, the first condenser 403, the second condenser 404 and the throttle valve 405 are connected in series to form a circulation passage of refrigerant;
the hot users comprise a domestic hot water hot user 301, a cold/hot user 302 and a heating hot user 303;
the second refrigerant is divided into two paths: one branch enters a domestic hot water heating user 301 through a fifteenth pipeline L15 and enters water end equipment after being heated; the other branch enters the second condenser 404, is heated and then enters the domestic hot water heating user 301, and enters the water end equipment after being heated.
A natural refrigerant circulates between the cooling tower 500 and the first condenser 403 and takes heat of the first condenser 403.
A first refrigerant circulates between the cold/hot user 302 and the evaporator 401, and the evaporator 401 is used for cooling the first refrigerant, and the first refrigerant provides cold energy for the cold/hot user 302.
The branch from the water supply main pipe 202a through the hot user is divided into two branches:
one branch L12 flows through the domestic hot water user 301 to release heat and then flows back to the water return main pipe 202 b;
the other branch L17 flows through the heating users 303 to release heat, and then enters the evaporator 401 through an eighteenth pipeline L18, and flows back to the water return main pipe 202b through a twentieth pipeline L20 after being cooled;
the second heating medium enters the first condenser 403 and is heated, and then enters the heating user 303 through the twenty-first line L21 and releases heat, and then enters the cold/hot user 302 and further releases heat, and then flows out, and then a part returns to the heating user 303, and a part enters the first condenser 403 through the line L23' and completes one cycle.
Specifically, the heat storage module 201 is a buried pipe or a heat storage water body.
Specifically, the low-temperature first heating medium in the return water main pipe 202b enters the buried pipe 201 through the third pipeline L3, the flow direction of the medium in the buried pipe 201 is opposite to that of the first and second embodiments, in the buried pipe, the low-temperature first heating medium exchanges heat with deep soil, so that the heat stored in the soil in other seasons is released, and therefore, the heat storage unit completes the heat release cycle;
after the first heat medium is subjected to preliminary temperature rise, the first heat medium enters the dead steam condenser 101 through a fifth pipeline L5, indirect heat exchange is carried out between the first heat medium and dead steam in the dead steam condenser, after the temperature of the first heat medium is further raised, the first heat medium enters the peak heater 104 from a first water outlet of the dead steam condenser through a second pipeline L2, heat exchange is carried out between the first water outlet of the peak heater 104 and steam from the steam turbine 103 in the peak heater 104, after the temperature of the first heat medium is raised again, the high-temperature first heat medium enters the water supply main pipe 202a from a third water outlet of the peak heater 104 through a pipeline L6;
the seventh pipe L7 at the water outlet of the water supply main pipe 202a is divided into two paths:
one path is communicated with a water return main pipe 202b through an eighth pipeline L8, a water outlet of the water return main pipe 202b is communicated with a first water inlet of the dead steam condenser 101 through a second pipeline L2, and a fifth valve V5 is arranged on the second pipeline L2;
the other branch is divided into two branches: a first branch and a second branch;
the first branch is communicated with a fourth water inlet of a domestic hot water user 301 through a twelfth pipeline L12, the first heating medium releases heat in a heat exchanger of the domestic hot water user 301, and then is communicated with a ninth pipeline L9 of an inlet pipeline of a backwater main trunk pipe 202b through a fourth water outlet of the domestic hot water user 301, and a tenth valve V10 is arranged on the communicating pipe; the second branch is communicated with a sixth water inlet of a heating user 303 through a seventeenth pipeline L17, the first heating medium releases heat in a heat exchanger of the heating user 303, then enters an evaporator 401 of the electric heat pump through an eighteenth pipeline L18, the temperature of the evaporator 401 of the electric heat pump is further reduced, a water outlet of the evaporator 401 is converged with a thirteenth pipeline L13 of a connecting pipeline of a domestic hot water user 301 through a twentieth pipeline L20 and is communicated with an inlet of a water return main trunk pipe 202b through a ninth pipeline L9, an outlet of the water return main trunk pipe 202b is communicated with a first water inlet of the steam exhaust condenser 101 through a twelfth pipeline L2, and a first heating medium circulation passage is formed;
the hot user 303 further comprises a seventh water inlet and a seventh water outlet;
the cold/hot user 302 further comprises an eleventh water inlet and an eleventh water outlet;
the tenth water outlet of the first condenser 403 is communicated with the seventh water inlet of the hot user 303 through a pipe L21, the seventh water outlet of the hot user 303 is communicated with the eleventh water inlet of the cold/hot user 302 through a twenty-second pipe L22, the eleventh water outlet of the cold/hot user 302 is divided into two paths, one path is communicated with the seventh water inlet of the hot user 303 through a twenty-third pipe L23, and the other path is communicated with the tenth water inlet of the first condenser through a pipe L23' to form a second heat medium circulation loop for directly radiating heat for heating the user, thereby realizing heating in the heating season of the user.
Fourth embodiment
The present embodiment discloses a control method of a system according to the first to third embodiments, characterized in that: the control method comprises the following steps:
s1: arranging sensors at key parts in the system, wherein the sensors are one or more of temperature, flow rate, pressure and water quality monitoring sensors;
s2: and collecting the numerical value of the sensor, and controlling thermal and physical parameters of various liquids in the system according to the numerical value, thereby realizing the operation of the system under various working conditions. The various working conditions comprise the working condition of domestic hot water supply in non-heating seasons. In order to adapt to the fluctuating demand, the system implements the following control sub-steps in the non-heating season domestic hot water supply working condition:
SS 1: when the sensor detects that the water temperature in line L9 flowing to supply/return main pipe 202b is above a set point, the system causes the first heating medium to form a circulation path as follows: the first heating medium sequentially enters the supply/return main pipe 202b, the heat storage module 201 and the supply/return main pipe 202a to form a layered and stepped temperature heat storage mode;
SS 2: when the sensor detects that the water temperature in line L7 flowing from supply/return main pipe 202a is above a set point, the system causes the first heating medium to form a circulation path as follows: the first heating medium sequentially enters the supply/return main pipe 202b, the exhaust steam condenser 101, the heat storage module 201 and the supply/return main pipe 202a and forms a heat release mode.
The control method is a multi-parameter control and adjustment method, a plurality of monitoring points of the temperature, the flow rate, the pressure, the water quality and the like of a first heating medium, a second heating medium, a first cooling medium, a second cooling medium and a natural cooling medium are arranged at key points of each part, and the thermal physical parameters of liquid are controlled by utilizing a plurality of monitoring indexes to guide the operation of the whole year and various variable working conditions.
The above embodiments are only used for explaining the present invention, wherein the structure, connection mode and manufacturing process of each component can be changed, and all the equivalent transformation and improvement performed on the basis of the present technical solution should not be excluded from the protection scope of the present invention.
Claims (8)
1. An active energy storage type annual supply system of a concentrated heat network, the system comprising: a heat source, a heat storage/release unit, a heat user;
a circulation passage of the first heating medium is formed in the heat accumulation/release unit and is used for accumulating or extracting heat and/or distributing the first heating medium to the heat users; the heat storage/release unit comprises a heat storage module (201), a water supply main pipe (202a), a water return main pipe (202b), a plurality of pipelines and valves; the first heating medium exchanges heat with the heat exchange equipment of the heat source and obtains heat, and then the first heating medium is divided into two branches:
one branch enters the heat storage module (201) through a pipeline and stores heat in the heat storage module (201) and then returns to the heat exchange device of the heat source to complete a cycle;
the other branch enters the water supply main pipe (202a) through a pipeline and then is divided into two branches:
one branch pipe flows back to a water return main pipe (202b) through a pipeline and flows back to the heat exchange equipment of the heat source to complete a cycle;
the other branch passes through the hot user through a pipeline and releases heat, and then flows back to a water return main pipe (202b) and flows back to the heat exchange equipment of the heat source to complete a cycle;
the refrigerant enters the heat consumer through the pipeline and absorbs the heat of the first heating medium, and then the refrigerant is supplied to the consumer and meets the demand of the consumer.
2. The active energy storage type annual supply system of a concentrated heat network according to claim 1, wherein: the heat source comprises a dead steam condenser (101), a boiler (102), a steam turbine (103) and a peak heater (104); steam generated by the boiler enters the steam turbine (103) and works to generate power, exhaust steam generated by the steam turbine (103) enters the exhaust steam condenser (101) and is condensed in the exhaust steam condenser, heat is transferred to a first heating medium, and then the first heating medium returns to the boiler (102); the steam extracted from the steam turbine (103) enters the spike heater (104) and transfers heat to a first heating medium and then enters the boiler (102);
the first heating medium enters the spike heater (104) and exchanges heat before entering the water supply main pipe (202 a).
3. The active energy storage type annual supply system of a concentrated heat network according to claim 2, wherein: the hot users comprise domestic hot water hot users (301), and the second refrigerant enters the domestic hot water hot users (301) through a pipeline and enters the water end equipment after being heated.
4. The active energy storage type annual supply system of a concentrated heat network according to claim 2, wherein: the system further comprises a heat pump unit, a cooling tower (500);
the heat pump unit comprises an evaporator (401), a compressor (402), a first condenser (403), a second condenser (404) and a throttle valve (405); the evaporator (401), the compressor (402), the first condenser (403), the second condenser (404) and the throttle valve (405) are connected in series to form a circulation passage of refrigerant;
the hot users comprise domestic hot water hot users (301) and cold/hot users (302);
the second refrigerant is divided into two paths: one branch enters a domestic hot water hot user (301) through a pipeline, and enters water end equipment after being heated; the other branch enters the second condenser (404) firstly, is heated and then enters the domestic hot water heating user (301) and enters the water end equipment after being heated;
natural refrigerant circulates between the cooling tower (500) and the first condenser (403) and takes heat of the first condenser (403) away;
a first refrigerant circulates between the cold/hot user (302) and the evaporator (401), the evaporator (401) being arranged to cool the first refrigerant, which first refrigerant provides cooling energy to the cold/hot user (302).
5. The utility model provides a concentrated heat supply network initiative energy storage type supply system all the year which characterized in that: the system comprises a heat source, a heat accumulation/release unit and a heat user;
a circulation passage of the first heating medium is formed in the heat accumulation/release unit and is used for accumulating or extracting heat and/or distributing the first heating medium to the heat users; the heat storage/release unit comprises a heat storage module (201), a water supply main pipe (202a), a water return main pipe (202b), a plurality of pipelines and valves; the first heating medium exchanges heat with the heat exchange device of the heat source and obtains heat, and then enters the water supply main pipe (202a) and is divided into two branches:
one branch pipe flows back to the water return main pipe (202b) through a pipeline;
the other branch passes through the hot user and releases heat, and then flows back to a water return main pipe (202 b);
a first heating medium flowing back from a water return main pipe (202b) enters the heat storage module (201) and extracts heat stored in the heat storage module and then enters a heat exchange device of the heat source through a pipeline to complete a cycle;
the second refrigerant enters the heat consumer through a pipeline and absorbs the heat of the first heating medium, and then the second refrigerant is supplied to the consumer and meets the demand of the consumer.
6. The active energy storage type annual supply system of a concentrated heat network according to claim 5, wherein: the heat source comprises a dead steam condenser (101), a boiler (102), a steam turbine (103) and a peak heater (104); steam generated by the boiler enters the steam turbine (103) and works to generate power, exhaust steam generated by the steam turbine (103) enters the exhaust steam condenser (101) and is condensed in the exhaust steam condenser, heat is transferred to a first heating medium, and then the first heating medium returns to the boiler (102); the steam extracted from the steam turbine (103) enters a spike heater (104) and transfers heat to a first heating medium and then enters the boiler (102);
the first heating medium enters the spike heater (104) and exchanges heat before entering the water supply main pipe (202 a).
7. The active energy storage type annual supply system of a concentrated heat network according to claim 6, wherein: the system further comprises a heat pump unit, a cooling tower (500);
the heat pump unit comprises an evaporator (401), a compressor (402), a first condenser (403), a second condenser (404) and a throttle valve (405); the evaporator (401), the compressor (402), the first condenser (403), the second condenser (404) and the throttle valve (405) are connected in series to form a circulation passage of refrigerant;
the hot users comprise a domestic hot water hot user (301), a cold/hot user (302) and a heating hot user (303);
the second refrigerant is divided into two paths: one branch enters a domestic hot water hot user (301) through a pipeline, and enters water end equipment after being heated; the other branch enters the second condenser (404) firstly, is heated and then enters the domestic hot water heating user (301) and enters the water end equipment after being heated;
natural refrigerant circulates between the cooling tower (500) and the first condenser (403) and takes heat of the first condenser (403) away;
a first refrigerant circulates between the cold/hot user (302) and the evaporator (401), the evaporator (401) is used for cooling the first refrigerant, and the first refrigerant provides cold energy for the cold/hot user (302);
the branch from the water mains (202a) through which the hot user flows is divided into two branches:
one branch of the water return main pipe (202b) flows through the domestic hot water users (301) through a pipeline and releases heat, and then flows back to the water return main pipe;
the other branch passes through the heating heat consumer (303) through a pipeline and releases heat, then enters the evaporator (401) through the pipeline, is cooled and then flows back to the water return main pipe (202b) through the pipeline;
the second heating medium enters the first condenser (403), is heated and then enters the heating user (303) through a pipeline to release heat, then enters the cold/hot user (302) to further release heat, then flows out, then returns to the heating user (303), and enters the first condenser (403) through a pipeline to complete a cycle.
8. The concentrated heat network active energy storage type annual supply system according to claim 1 or 5, wherein: the heat storage module is a buried pipe or a heat storage water body.
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| CN202021109302.XU CN212902091U (en) | 2020-06-15 | 2020-06-15 | Active energy storage type all-year supply system of centralized heat supply network |
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| CN202021109302.XU CN212902091U (en) | 2020-06-15 | 2020-06-15 | Active energy storage type all-year supply system of centralized heat supply network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692777A (en) * | 2020-06-15 | 2020-09-22 | 云能科技有限公司 | Active energy storage type all-year-round supply system of centralized heat supply network and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692777A (en) * | 2020-06-15 | 2020-09-22 | 云能科技有限公司 | Active energy storage type all-year-round supply system of centralized heat supply network and control method thereof |
| CN111692777B (en) * | 2020-06-15 | 2024-02-09 | 云能科技有限公司 | Active energy storage type annual supply system of centralized heating network and control method thereof |
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