CN202118984U - Energy-saving heating system of thermal power plant - Google Patents

Energy-saving heating system of thermal power plant Download PDF

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Publication number
CN202118984U
CN202118984U CN 201120217988 CN201120217988U CN202118984U CN 202118984 U CN202118984 U CN 202118984U CN 201120217988 CN201120217988 CN 201120217988 CN 201120217988 U CN201120217988 U CN 201120217988U CN 202118984 U CN202118984 U CN 202118984U
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China
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water
heat pump
absorption heat
supply network
network backwater
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CN 201120217988
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江荣方
毛洪财
蔡小荣
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Shuangliang Eco Energy Systems Co Ltd
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Shuangliang Eco Energy Systems Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12Hot water central heating systems using heat pumps

Abstract

The utility model relates to an energy-saving heating system of a thermal power plant, which comprises an extraction condensing turbine (1), a turbine extraction steam pipe (3), a water-cooled condenser (5), a water type heat exchanger (6), subcoolers (7), absorption heat pumps and a steam-water heat exchanger (9), wherein the number of the absorption heat pumps is n. Heating network backwater is divided into two paths before or after entering the water type heat exchanger (6). One path of heating network backwater enters the absorber of the first absorption heat pump XR1 and then is connected with the absorption heat pumps (XR1...n) in series, enters the condenser of the nth absorption heat pumps XRn after flowing out the absorber of the nth absorption heat pumps XRn, and then is connected into the condensers of the absorption heat pumps XR1 in series. The other path of heating network backwater is connected into the subcoolers (7) of the absorption heat pumps in parallel, and the two paths of heating network backwater are finally merged and then are sent out. The energy-saving heating system can recover condensing waste heat of many thermal power plants, the operating efficiency of the heat pumps is increased, and the heating network system can operate more reliably.

Description

The energy-saving heating system of steam power plant
Technical field
The utility model relates to a kind of cogeneration heating system, is applicable to that the exhaust steam of cogeneration power plant steam turbine is more energy-conservation, utilizes safely and reliably, and heat network system more utilizes condensation waste heat.
Background technology
Along with the shortage of the energy and the requirement of energy-saving and emission-reduction improve day by day, the comprehensive utilization technique of the energy is in continuous lifting.Urban planning cogeneration in the north carries out central heating, to substitute original independent boiler central heating, realizes the requirement of energy-saving and emission-reduction.Make full use of steam power plant's used heat, to improve the heat capacity of steam power plant, realize energy-saving and emission-reduction better, guarantee the safe and reliable operation of steam power plant and heat supply network simultaneously again, various new flow processs require study.Realize the more turbine discharge used heat that reclaims in the power plant, the most important condition is that adopting on this basis with the electricity is the source pump of power, or is the absorption type heat pump assembly of power with the heat supply network high-temperature water with the secondary net return water temperature reduction of hot user side.Heat supply network backwater through power plant is confessed carries out refrigeration cool-down, supplies the secondary net to use again as the waste heat source of heat pump, makes the heat supply network return water temperature reduce back telegram in reply factory.Power plant heat supply network backwater is introduced into former plant condenser after getting into power plant, with electric power plant circulating water be blended in heat up in the condenser after, get into absorption heat pump again, see off after in heat pump, heating up.In this system, the temperature that recirculated water goes out heat pump is the keys of heat supply network in many recovery of whole heating season condensation heat, in same outlet temperature, can reclaim more condensation waste heat, and become the another difficult problem of steam power plant's central heating technology with high-grade drawing gas less.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of condensation waste heat of realizing reclaiming more steam power plants is provided, and the operational efficiency of raising heat pump and heat network system be the energy-saving heating system of steam power plant of reliability service more.
The purpose of the utility model is achieved in that the energy-saving heating system of a kind of steam power plant; Comprise sucking condensing turbine, extracted steam from turbine pipe, water-cooled condenser, absorption heat pump XR1 ... N and vapor-water heat exchanger; Said absorption heat pump XR1 ... N has the n platform, and n is >=2 natural number, and the increase of said system has a water-water heat exchanger; Absorption heat pump XR1 ... N has additional subcooler; The heat supply network backwater is divided into the absorber that two tunnel, one road heat supply network backwater is introduced into first absorption heat pump XR1 before or after the entering water-water heat exchanger, get into the absorber of second absorption heat pump XR2 again ... Be connected in series successively; Until the absorber that gets into n platform absorption heat pump XRn; Go out the condenser that gets into this n platform absorption heat pump XRn behind the absorber of n platform absorption heat pump XRn again, then from n-1, n-2 ... Be connected in series successively, from the condenser of first absorption heat pump XR1, go out at last; Another road heat supply network backwater parallel connection respectively gets into each absorption heat pump XR1 ... The subcooler of n; Two road heat supply network backwater merge at last; Directly or again behind vapor-water heat exchanger, see off; The cooling circulating water of water-cooled condenser goes out behind the said water-cooled condenser parallel connection or series connection gets into the evaporimeter of absorption heat pump XRn and the cooling system of steam power plant is connected, and the cooling system of steam power plant is cooling tower, air cooling device or a device for cooling.
The energy-saving heating system of the utility model steam power plant; The cooling circulating water of said water-cooled condenser be divided into two the tunnel: the one tunnel be introduced into n platform absorption heat pump XRn evaporimeter connect; Return successively then, get into the evaporimeter of second, first absorption heat pump at last, from the evaporimeter of first absorption heat pump XR1, go out; Return water-cooled condenser, another road gets into the cooling system of steam power plant.
The energy-saving heating system of the utility model steam power plant; The evaporimeter that the cooling circulating water of said water-cooled condenser is introduced into n platform absorption heat pump XRn connects; Return successively then; Get into the evaporimeter of second, first absorption heat pump at last, from the evaporimeter of first absorption heat pump XR1, go out, and then get into the cooling system of steam power plant.
The purpose of invention can also be achieved in that the energy-saving heating system of a kind of steam power plant; Comprise sucking condensing turbine, extracted steam from turbine pipe, water-cooled condenser, absorption heat pump XR1 ... N and vapor-water heat exchanger; Said absorption heat pump XR1 ... N has the n platform; N is >=2 natural number, it is characterized in that: the increase of said system has a water-water heat exchanger 6, absorption heat pump XR1 ... N has additional subcooler; Recirculated water in the water-water heat exchanger is heat supply network backwater and evaporator with heat pump recirculated water; The heat supply network backwater is divided into the absorber that two tunnel, one road heat supply network backwater is introduced into first absorption heat pump XR1 before or after the entering water-water heat exchanger, get into the absorber of second absorption heat pump XR2 again ... Be connected in series successively; Until the absorber that gets into n platform absorption heat pump XRn; Go out the condenser that gets into this n platform absorption heat pump XRn behind the absorber of n platform absorption heat pump XRn again, then from n-1, n-2 ... Be connected in series successively, from the condenser of first absorption heat pump XR1, go out at last; Another road heat supply network backwater parallel connection respectively gets into each absorption heat pump XR1 ... The subcooler of n, two road heat supply network backwater merge at last, directly or again behind vapor-water heat exchanger, see off; Evaporator with heat pump recirculated water is introduced into the evaporimeter of n platform absorption heat pump XRn behind water-water heat exchanger 6; Return successively then; Get into the evaporimeter of second, first absorption heat pump at last, from the evaporimeter of first absorption heat pump XR1, go out, return water-water heat exchanger.
The energy-saving heating system of the utility model steam power plant; The heat supply network backwater is divided into two the tunnel earlier after getting into steam power plant; One road heat supply network backwater gets into water-water heat exchanger; Go out the absorber that gets into first absorption heat pump XR1 behind the water-water heat exchanger again, another road heat supply network backwater do not get into water-water heat exchanger and directly parallel connection get into each absorption heat pump XR1 ... The subcooler of n.
The energy-saving heating system of the utility model steam power plant; Said heat supply network backwater is introduced into water-water heat exchanger after getting into steam power plant; Be further divided into two the tunnel after going out water-water heat exchanger; One road heat supply network backwater is introduced into each absorption heat pump XR1 of series connection behind the absorber of first absorption heat pump XR1 ... N, another road heat supply network backwater parallel connection respectively gets into each absorption heat pump XR1 ... The subcooler of n.
The energy-saving heating system of the utility model steam power plant; Said each absorption heat pump XR1 ... The subcooler of n is merged into a subcooler; Each absorption heat pump XR1 ... The water as refrigerant pipeline parallel connection of n inserts the subcooler after this merging, and subcooler and another road heat supply network backwater that the heat supply network backwater goes out after this merging merge at last.
The energy-saving heating system of this steam power plant also is applicable to an air cooling power plant and a cold power plant.
The beneficial effect of the utility model is:
Increased on the heat pump in steam power plant when subcooler and water-cooled condenser supply heat supply in winter to do heat supply season and moved.Heat supply network recirculated water and power plant's cool cycles water separation isolated operation.Guaranteed the water quality of hot net water, guaranteed that all kinds of heat transmission equipments can safe and reliable energy-efficient operation.And because cooling circulating water and condensing direct heat transfer, compare with employing cellular-type heat-exchange system and can reclaim used heat more.Adopt heat supply network recirculated water directly to reclaim the COP value that the heat pump waste heat has more effectively improved heat pump.The working steam of heat pump will be practiced thrift more than 8% than original system.Because heat pump has been used high-grade energy less in reclaiming steam power plant's condensation waste heat process; So compare with former heat pump; Under the situation that reclaims same condensation waste heat; The temperature that goes out heat pump is lower than originally, can guarantee that so more heat supply network reclaims condenser heat and realizes maximization when heating demand descends, and is utilizing more exhaust steam in steam turbine to be used for heating in whole heating season.On the other hand, owing to reclaim same condensation heat, the circulating water temperature that goes out heat pump is low, under same outlet temperature situation, and the recyclable more condensation waste heat of heat pump.Through heat supply network recirculated water and cooling circulating water corresponding series flow in the absorber of each heat pump and condenser and evaporimeter, make the performance of heat pump obtain better optimize.The volume of heat pump, weight indicator can descend greatly, and manufacturing cost can descend simultaneously.On the other hand, because the performance optimization of heat pump, each item economic technology economic indicator of steam power plant is further enhanced.
Description of drawings
The heat supply network backwater that Fig. 1 (a) relates to for the utility model is shunted before second condenser and cooling circulating water parallel connection sketch map.
The heat supply network backwater that Fig. 1 (b) relates to for the utility model is shunted behind second condenser and cooling circulating water parallel connection sketch map.
The heat supply network backwater that Fig. 2 (a) relates to for the utility model is shunted before second condenser and cooling circulating water series connection sketch map.
The heat supply network backwater that Fig. 2 (b) relates to for the utility model is shunted behind second condenser and cooling circulating water series connection sketch map.
Fig. 3 (a) shunts before second condenser for the heat supply network backwater that the utility model relates to, and evaporator with heat pump recirculated water is from the sketch map of water-water heat exchanger 6 interior circulations.
Fig. 3 (b) shunts behind second condenser for the heat supply network backwater that the utility model relates to, and evaporator with heat pump recirculated water is from the sketch map of water-water heat exchanger 6 interior circulations.
Reference numeral among the figure:
Sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, water-cooled condenser 5 (former), water-water heat exchanger 6 (increasing newly), subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network return branch 10, heat supply network return branch 11, cooling tower 12, air cooling device 13, a device for cooling 14, evaporimeter circulating water pipe 15, absorption heat pump XR1 ... N.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Embodiment 1:
Shown in Fig. 1 (a), the heat supply network backwater that Fig. 1 (a) relates to for the utility model is shunted before second condenser and cooling circulating water parallel connection sketch map.Can find out by Fig. 1 (a), heating system by sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, water-cooled condenser 5, second condenser 6, subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network return branch 10, heat supply network return branch 11, cooling tower 12, air cooling device 13, a device for cooling 14, absorption heat pump (XR1 ... N) and compositions such as water pump, valve and connecting line.Said absorption heat pump (XR1 ... N) the n platform is arranged, n is >=2 natural number.The heat supply network backwater is divided into two the tunnel after getting into power plant: heat supply network return branch 10 and heat supply network return branch 11.One road heat supply network backwater inserts second condenser 6, goes out the absorber that second condenser 6 back heat supply network return branch 10 get into first absorption heat pump XR1, goes out the absorber that gets into second absorption heat pump XR2 behind the absorber of first absorption heat pump XR1; All the other and the like;, go out the absorber that gets into n platform absorption heat pump XRn behind the absorber of n-1 platform absorption heat pump XR2 again, get into the condenser of n platform absorption heat pump XRn again; Get into the condenser of n-1 platform absorption heat pump XR2 then; All the other and the like ..., after the condenser of first absorption heat pump XR1 go out.Just get into the condenser of absorption heat pump XR2 after the minimum absorber from absorption heat pump XR2 of this one road hot net water goes out, go out the condenser that returns absorption heat pump XR1 behind the condenser of absorption heat pump XR2, the condenser from absorption heat pump XR1 goes out at last.This road heat supply network backwater is heated through second condenser 6; Again through first absorption heat pump XR1, second absorption heat pump XR2 ... The absorber of n platform absorption heat pump XRn add gentle n platform absorption heat pump XRn ... The condenser of second absorption heat pump XR2, first absorption heat pump XR1 is heated, and the heat supply network return water temperature is raise.Another road heat supply network return branch 11 directly parallel connection gets into each absorption heat pump XR1 ... The subcooler 7 of n.Heat exchange heats up in subcooler 7, has taken away the heat of absorption heat pump condensation water as refrigerant, and the heat of the water as refrigerant that the heat pump generator produces has obtained effective utilization.Two road heat supply network backwater merge at last, directly or again after vapor-water heat exchanger 9 heats up, see off.Because water as refrigerant cooling back gets into evaporimeter; Basically eliminated the liquid state loss that water as refrigerant gets into behind the evaporimeter self flash distillation cooling; Make water as refrigerant can all be used for refrigeration, the COP value of heat pump is improved, reached the effect that one action two gets cooling circulating water.Recirculated water in the water-cooled condenser 5 (former) of power plant goes out cool cycles water discharge pipe 8 and is divided into two the tunnel; One the tunnel is introduced into the evaporimeter of n platform absorption heat pump XRn; Return successively then; Get into the evaporimeter of second absorption heat pump XR2, first absorption heat pump XR1 at last, heat again from returning water-cooled condenser 5 after first absorption heat pump XR1 flows out.Another road enters atmosphere to unnecessary heat through a cooling tower 12 or a device for cooling 14.Direct Air-Cooled power plant water-water heat exchanger 6 links to each other with the admission pipeline of air cooler, a part of water-water heat exchanger 6 that gets into of exhaust steam in steam turbine, a part of air cooler that gets into.In this system heat supply network recirculated water and cooling circulating water two at the most the series flow in the platform heat pump make the performance of heat pump obtain optimization, each item technical-economic index of power plant's cogeneration operation is further improved.
Shown in Fig. 1 (b), the heat supply network backwater that Fig. 1 (b) relates to for the utility model is shunted behind second condenser and cooling circulating water parallel connection sketch map.Fig. 1 (b) is behind second condenser 6, to be divided into two the tunnel after the heat supply network backwater gets into power plant with Fig. 1 (a) difference.
Embodiment 2:
Shown in Fig. 2 (a), the heat supply network backwater that Fig. 2 (a) relates to for the utility model is shunted before second condenser and cooling circulating water series connection sketch map.Can find out by Fig. 2 (a), heating system by sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, water-cooled condenser 5, second condenser 6, subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network return branch 10, heat supply network return branch 11, cooling tower 12, a device for cooling 14, absorption heat pump (XR1 ... N) and compositions such as water pump, valve and connecting line.Said absorption heat pump (XR1 ... N) the n platform is arranged, n is >=2 natural number, and the heat supply network backwater is divided into two the tunnel after getting into power plant: heat supply network return branch 10 and heat supply network return branch 11.One the tunnel goes out the absorber that second condenser, 6 back heat supply network return branch 10 get into first absorption heat pump XR1; Go out the absorber that gets into second absorption heat pump XR2 behind the absorber of first absorption heat pump XR1, all the other and the like ... Go out the absorber that gets into n platform absorption heat pump XRn behind the absorber of n-1 platform absorption heat pump XR2 again; Get into the condenser of n platform absorption heat pump XRn again, get into the condenser of n-1 platform absorption heat pump XR2 then, all the other and the like;, after the condenser of first absorption heat pump XR1 go out.Just get into the condenser of absorption heat pump XR2 after the minimum absorber from absorption heat pump XR2 of this one road hot net water goes out, go out the condenser that returns absorption heat pump XR1 behind the condenser of absorption heat pump XR2, the condenser from absorption heat pump XR1 goes out at last.This road heat supply network backwater is heated through second condenser 6; Again through first absorption heat pump XR1, second absorption heat pump XR2 ... The absorber of n platform absorption heat pump XRn add gentle n platform absorption heat pump XRn ... The condenser of second absorption heat pump XR2, first absorption heat pump XR1 is heated, and the heat supply network return water temperature is raise.Another road heat supply network backwater is by directly parallelly connected each the absorption heat pump XR1 that gets into of heat supply network return branch 11 ... The subcooler 7 of n.Heat exchange heats up in subcooler 7, has taken away the heat of absorption heat pump condensation water as refrigerant, and the heat of the water as refrigerant that the heat pump generator produces has obtained effective utilization.Two road heat supply network backwater merge at last, directly or again after vapor-water heat exchanger 9 heats up, see off.And because water as refrigerant cooling back gets into evaporimeter; Basically eliminated the liquid state loss that water as refrigerant gets into behind the evaporimeter self flash distillation cooling; Make water as refrigerant can all be used for refrigeration, the COP value of heat pump is improved, reached the effect that one action two gets cooling circulating water.The cool cycles water discharge pipe 8 of the water-cooled condenser 5 (former) of power plant; Be introduced into the evaporimeter of n platform absorption heat pump XRn; Return successively then, get into the evaporimeter of second absorption heat pump XR2, first absorption heat pump XR1 at last, get into cooling tower 12 from the evaporimeter of first the absorption heat pump XR1 back of coming out; Enter atmosphere to unnecessary heat, return water-cooled condenser 5 and heat again.Also can enter atmosphere through a device for cooling 14.In this system heat supply network recirculated water and cooling circulating water two at the most the series flow in the platform heat pump make the performance of heat pump obtain optimization, each item technical-economic index of power plant's cogeneration operation is further improved.
Shown in Fig. 2 (b), the heat supply network backwater that Fig. 2 (b) relates to for the utility model is shunted behind second condenser and cooling circulating water series connection sketch map.Fig. 2 (b) is behind second condenser 6, to be divided into two the tunnel after the heat supply network backwater gets into power plant with Fig. 2 (a) difference.
Embodiment 3:
Shown in Fig. 3 (a), Fig. 3 (a) shunts before second condenser 6 for the heat supply network backwater that the utility model relates to, and evaporator with heat pump recirculated water is from the sketch map of water-water heat exchanger 6 interior circulations.Can find out by Fig. 3 (a), heating system by sucking condensing turbine 1, generator 2, extracted steam from turbine pipe 3, coagulate water pipe 4, water-cooled condenser 5, second condenser 6, subcooler 7, cool cycles water discharge pipe 8, vapor-water heat exchanger 9, heat supply network backwater 10, heat supply network return branch 11, cooling tower 12, air cooling device 13, a device for cooling 14, evaporimeter water inlet pipe 15, absorption heat pump (XR1 ... N) and compositions such as water pump, valve and connecting line.Said absorption heat pump (XR1 ... N) the n platform is arranged, n is >=2 natural number, and the heat supply network backwater is divided into two the tunnel, heat supply network return pipe 10, heat supply network return branch 11 after getting into power plant.One the tunnel goes out the absorber that second condenser, 6 back heat supply network return branch 10 get into first absorption heat pump XR1; Go out the absorber that gets into second absorption heat pump XR2 behind the absorber of first absorption heat pump XR1, all the other and the like ... Go out the absorber that gets into n platform absorption heat pump XRn behind the absorber of n-1 platform absorption heat pump XR2 again; Get into the condenser of n platform absorption heat pump XRn again, get into the condenser of n-1 platform absorption heat pump XR2 then, all the other and the like;, after the condenser of first absorption heat pump XR1 go out.Just get into the condenser of absorption heat pump XR2 after the minimum absorber from absorption heat pump XR2 of this one road hot net water goes out, go out the condenser that returns absorption heat pump XR1 behind the condenser of absorption heat pump XR2, the condenser from absorption heat pump XR1 goes out at last.This road heat supply network is heated through second condenser 6; Again through first absorption heat pump XR1, second absorption heat pump XR2 ... The absorber of n platform absorption heat pump XRn add gentle n platform absorption heat pump XRn ... The condenser of second absorption heat pump XR2, first absorption heat pump XR1 is heated, and the heat supply network return water temperature is raise.Another road heat supply network return branch 11 directly parallel connection gets into each absorption heat pump XR1 ... The subcooler 7 of n.Heat exchange heats up in subcooler 7, has taken away the heat of absorption heat pump condensation water as refrigerant, and the heat of the water as refrigerant that the heat pump generator produces has obtained effective utilization.Two road heat supply network backwater merge at last, directly or again after vapor-water heat exchanger 9 heats up, see off.And because water as refrigerant cooling back gets into evaporimeter; Basically eliminated the liquid state loss that water as refrigerant gets into behind the evaporimeter self flash distillation cooling; Make water as refrigerant can all be used for refrigeration, the COP value of heat pump is improved, reached the effect that one action two gets cooling circulating water.Evaporator with heat pump recirculated water constitutes the independent circulatory system.Evaporimeter recirculated water heats up the back as low-temperature heat source in second condenser 6; Get into the evaporimeter of n platform absorption heat pump XRn; Return successively then; Get into the evaporimeter of second absorption heat pump XR2, first absorption heat pump XR1 at last, heat again from returning second condenser 6 after the evaporimeter of first absorption heat pump XR1 comes out.Unnecessary heat enters atmosphere through former cooling system water-cooled condenser 5 and cooling tower 12 or a device for cooling 14.In this system heat supply network recirculated water and evaporimeter recirculated water two at the most the series flow in the platform heat pump make the performance of heat pump obtain optimization, each item technical-economic index of power plant's cogeneration operation is further improved.
Shown in Fig. 3 (b), Fig. 3 (b) shunts behind second condenser for the heat supply network backwater that the utility model relates to, and evaporator with heat pump recirculated water is from the sketch map of water-water heat exchanger 6 interior circulations.Fig. 3 (b) is that with the difference of Fig. 3 (a) the heat supply network backwater gets into steam power plant and behind second condenser 6, is divided into two the tunnel.
Described heat supply network backwater also can carry out heat exchange with a shared subcooler (not drawing among the figure) of many heat pumps.The water as refrigerant pipeline of each heat pump (not drawing among the figure) is connected in parallel with subcooler, through backheat pump after the subcooler heat release.After heating up in subcooler, the heat supply network backwater merges with another road.

Claims (12)

1. energy-saving heating system of steam power plant; Comprise sucking condensing turbine (1), extracted steam from turbine pipe (3), water-cooled condenser (5), absorption heat pump (XR1 ... N) and vapor-water heat exchanger (9); Said absorption heat pump (XR1 ... N) the n platform is arranged, n is >=2 natural number, it is characterized in that: the increase of said system has a water-water heat exchanger (6); Absorption heat pump (XR1 ... N) have additional subcooler (7); The heat supply network backwater is divided into the absorber that two tunnel, one road heat supply network backwater is introduced into first absorption heat pump (XR1) before or after entering water-water heat exchanger (6), get into the absorber of second absorption heat pump (XR2) again ... Be connected in series successively; Until the absorber that gets into n platform absorption heat pump (XRn); Go out the condenser that gets into this n platform absorption heat pump (XRn) behind the absorber of n platform absorption heat pump (XRn) again, then from n-1, n-2 ... Be connected in series successively, from the condenser of first absorption heat pump (XR1), go out at last; Another road heat supply network backwater parallel connection respectively gets into each absorption heat pump (XR1 ... N) subcooler (7); Two road heat supply network backwater merge at last; Directly or again behind vapor-water heat exchanger (9), see off; The cooling circulating water of water-cooled condenser (5) goes out the parallel connection of said water-cooled condenser (5) back or series connection gets into the evaporimeter of absorption heat pump (XRn) and the cooling system of steam power plant is connected, and the cooling system of steam power plant is cooling tower (12), air cooling device (13) or a device for cooling (14).
2. the energy-saving heating system of a kind of steam power plant according to claim 1; It is characterized in that: the heat supply network backwater is divided into two the tunnel earlier after getting into steam power plant; One road heat supply network backwater gets into water-water heat exchanger (6); Go out the absorber that gets into first absorption heat pump XR1 behind the water-water heat exchanger (6) again, another road heat supply network backwater do not get into water-water heat exchanger (6) and directly parallel connection get into each absorption heat pump (XR1 ... N) subcooler (7).
3. the energy-saving heating system of a kind of steam power plant according to claim 1; It is characterized in that: said heat supply network backwater is introduced into water-water heat exchanger (6) after getting into steam power plant; Be further divided into two the tunnel after going out water-water heat exchanger (6); One road heat supply network backwater is introduced into each absorption heat pump (XR1 of series connection behind the absorber of first absorption heat pump (XR1) ... N), parallelly connected respectively each absorption heat pump (XR1 that gets into of another road heat supply network backwater ... N) subcooler (7).
4. according to the energy-saving heating system of claim 1 or 2 or 3 described a kind of steam power plants; It is characterized in that: the cooling circulating water of said water-cooled condenser (5) be divided into two the tunnel: the one tunnel be introduced into n platform absorption heat pump (XRn) evaporimeter connect; Return successively then, get into the evaporimeter of second, first absorption heat pump at last, from the evaporimeter of first absorption heat pump (XR1), go out; Return water-cooled condenser (5), another road gets into the cooling system of steam power plant.
5. according to the energy-saving heating system of claim 1 or 2 or 3 described a kind of steam power plants; It is characterized in that: the evaporimeter that the cooling circulating water of said water-cooled condenser (5) is introduced into n platform absorption heat pump (XRn) connects; Return successively then; Get into the evaporimeter of second, first absorption heat pump at last, from the evaporimeter of first absorption heat pump (XR1), go out, and then get into the cooling system of steam power plant.
6. according to the energy-saving heating system of claim 1 or 2 or 3 described a kind of steam power plants; It is characterized in that: said each absorption heat pump (XR1 ... N) subcooler (7) is merged into a subcooler; Each absorption heat pump (XR1 ... N) water as refrigerant pipeline parallel connection inserts the subcooler after this merging, and subcooler and another road heat supply network backwater that the heat supply network backwater goes out after this merging merge at last.
7. the energy-saving heating system of a kind of steam power plant according to claim 4; It is characterized in that: said each absorption heat pump (XR1 ... N) subcooler (7) is merged into a subcooler; Each absorption heat pump (XR1 ... N) water as refrigerant pipeline parallel connection inserts the subcooler after this merging, and subcooler and another road heat supply network backwater that the heat supply network backwater goes out after this merging merge at last.
8. the energy-saving heating system of a kind of steam power plant according to claim 5; It is characterized in that: said each absorption heat pump (XR1 ... N) subcooler (7) is merged into a subcooler; Each absorption heat pump (XR1 ... N) water as refrigerant pipeline parallel connection inserts the subcooler after this merging, and subcooler and another road heat supply network backwater that the heat supply network backwater goes out after this merging merge at last.
9. energy-saving heating system of steam power plant; Comprise sucking condensing turbine (1), extracted steam from turbine pipe (3), water-cooled condenser (5), absorption heat pump (XR1 ... N) and vapor-water heat exchanger (9); Said absorption heat pump (XR1 ... N) the n platform is arranged; N is >=2 natural number, it is characterized in that: the increase of said system has a water-water heat exchanger (6), absorption heat pump (XR1 ... N) have additional subcooler (7); Recirculated water in the water-water heat exchanger (6) is heat supply network backwater and evaporator with heat pump recirculated water; The heat supply network backwater is divided into the absorber that two tunnel, one road heat supply network backwater is introduced into first absorption heat pump (XR1) before or after entering water-water heat exchanger (6), get into the absorber of second absorption heat pump (XR2) again ... Be connected in series successively; Until the absorber that gets into n platform absorption heat pump (XRn); Go out the condenser that gets into this n platform absorption heat pump (XRn) behind the absorber of n platform absorption heat pump (XRn) again, then from n-1, n-2 ... Be connected in series successively, from the condenser of first absorption heat pump (XR1), go out at last; Another road heat supply network backwater parallel connection respectively gets into each absorption heat pump (XR1 ... N) subcooler (7), two road heat supply network backwater merge at last, directly or again behind vapor-water heat exchanger (9), see off; Evaporator with heat pump recirculated water is introduced into the evaporimeter of n platform absorption heat pump (XRn) behind water-water heat exchanger (6); Return successively then; Get into the evaporimeter of second, first absorption heat pump at last; From the evaporimeter of first absorption heat pump (XR1), go out, return water-water heat exchanger (6).
10. the energy-saving heating system of a kind of steam power plant according to claim 9; It is characterized in that: the heat supply network backwater is divided into two the tunnel earlier after getting into steam power plant; One road heat supply network backwater gets into water-water heat exchanger (6); Go out the absorber that gets into first absorption heat pump (XR1) behind the water-water heat exchanger (6) again, another road heat supply network backwater do not get into water-water heat exchanger (6) and directly parallel connection get into each absorption heat pump (XR1 ... N) subcooler (7).
11. the energy-saving heating system of a kind of steam power plant according to claim 9; It is characterized in that: said heat supply network backwater is introduced into water-water heat exchanger (6) after getting into steam power plant; Be further divided into two the tunnel after going out water-water heat exchanger (6); One road heat supply network backwater is introduced into each absorption heat pump (XR1 of series connection behind the absorber of first absorption heat pump (XR1) ... N), parallelly connected respectively each absorption heat pump (XR1 that gets into of another road heat supply network backwater ... N) subcooler (7).
12. according to the energy-saving heating system of claim 9 or 10 or 11 described a kind of steam power plants; It is characterized in that: said each absorption heat pump (XR1 ... N) subcooler (7) is merged into a subcooler; Each absorption heat pump (XR1 ... N) water as refrigerant pipeline parallel connection inserts the subcooler after this merging, and subcooler and another road heat supply network backwater that the heat supply network backwater goes out after this merging merge at last.
CN 201120217988 2011-06-25 2011-06-25 Energy-saving heating system of thermal power plant Expired - Lifetime CN202118984U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261694A (en) * 2011-06-25 2011-11-30 双良节能系统股份有限公司 Energy-efficient heating system for thermal power plants
CN104564189A (en) * 2014-12-05 2015-04-29 新汶矿业集团有限责任公司 Method for utilizing waste heat of power plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261694A (en) * 2011-06-25 2011-11-30 双良节能系统股份有限公司 Energy-efficient heating system for thermal power plants
CN104564189A (en) * 2014-12-05 2015-04-29 新汶矿业集团有限责任公司 Method for utilizing waste heat of power plant
CN104564189B (en) * 2014-12-05 2016-03-30 新汶矿业集团有限责任公司 The Application way of residual heat of electric power plant

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