CN204987536U - High temperature heating device based on lithium bromide absorption heat pump unit - Google Patents

High temperature heating device based on lithium bromide absorption heat pump unit Download PDF

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Publication number
CN204987536U
CN204987536U CN201520394397.7U CN201520394397U CN204987536U CN 204987536 U CN204987536 U CN 204987536U CN 201520394397 U CN201520394397 U CN 201520394397U CN 204987536 U CN204987536 U CN 204987536U
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China
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water
heat
steam
lithium bromide
outlet
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Expired - Fee Related
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CN201520394397.7U
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Chinese (zh)
Inventor
杜洋
屠珊
王红娟
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Xian Jiaotong University
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Xian Jiaotong University
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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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • 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]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • 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]
    • Y02B30/62Absorption based systems
    • Y02B30/625Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

The utility model discloses a high temperature heating device based on lithium bromide absorption heat pump unit, this high temperature heating device have added lithium bromide absorption heat pump unit and have retrieved used heat among the recirculated cooling water in certain small -size cogeneration of heat and power unit, including steam turbine power generation system, heat supply network water system and heat supply network water heat regenerative system. The heat supply network return water can reach 120 degrees centigrade of left and right sides in the temperature of absorption heat pump and vapour - water heat exchanger heat absorption back heat supply, utilizes the feedwater of the partial high temperature heat supply network of water pump extraction to feed water in getting into the high -pressure regenerator supply line of water - water heat exchanger heating steam turbine power generation system simultaneously, gets into vapour - water heat exchanger continue to heat after partial high temperature heat supply network feedwater in water - water heat exchanger after exothermic will mix with the medium temperature heat supply network water of absorption heat pump condenser export. The device provided by the utility model can show the low -grade heat that utilizes among the recirculated cooling water and come the heat supply, can effectively improve the temperature of high -pressure regenerator feedwater simultaneously when user's heating load reduces, reach energy -conserving effect.

Description

A kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit
Technical field:
The utility model belongs to steam power plant's energy-saving and emission-reduction field, is specifically related to a kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit.
Background technology:
In thermal power plant's energy loss, the overwhelming majority is taken away by the recirculated cooling water in condenser.Except pure back pressure unit, even still there is a large amount of cold source energy in the cogeneration units of heating.Adopt the heat in heat pump techniques absorption cycle cooling water to carry out central heating, then can solve energy dissipation and environmental thermal pollution problem simultaneously.Meanwhile, heat pump techniques also at recovery industrial exhaust heat, can excavate low grade heat energy to reach the object of economize energy.The advantage of heat pump is obvious, continues to add the temperature that spike steam water heat exchanger can improve water supply after heat pump simultaneously.Often user's thermic load and generation load are changes in actual applications, may occur the too much situation of heat supply, rationally handle this part too much heat well particularly important under some operating mode.
Utility model content:
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit, it effectively can reclaim low-temperature circulating cooling water middle-low grade heat energy, can utilize in user's thermic load minimizing situation in part heat supply network feedwater heating high temperature regenerator feedwater piping simultaneously and feed water, improve high temperature regenerator feed temperature, achieve energy-saving effect.
In order to achieve the above object, the utility model adopts following technical scheme to be achieved:
Based on a high-temperature heat supply device for lithium bromide absorption type heat pump unit, comprise steam turbine power generation system, hot net water heating system and cooling circulating water system; Wherein,
Turbine generating system comprises boiler, steam turbine, condenser, low-pressure regenerator, oxygen-eliminating device and high-pressure extraction device; Cooling circulating water system comprises lithium bromide absorption type heat pump unit; Heat supply network water system comprises steam water heat exchanger;
The steam (vapor) outlet of boiler is connected with the main steam inlet of steam turbine, the exhaust steam outlet of steam turbine is connected with the exhaust steam entrance of condenser, the condensate water outlet of condenser is connected with the feed-water intake of low-pressure regenerator, the low pressure backheat of steam turbine is bled to export and is connected with the steam inlet of low-pressure regenerator, the hydrophobic outlet of low-pressure regenerator is connected with the hot well of condenser, the feedwater outlet of low-pressure regenerator is connected with the feed-water intake of oxygen-eliminating device, the oxygen-eliminating device of steam turbine is bled to export and is connected with the steam inlet of oxygen-eliminating device, the feedwater outlet of oxygen-eliminating device is connected with the feed-water intake of high-pressure extraction device, the high-pressure extraction of steam turbine is bled to export and is connected with the steam inlet of high-pressure extraction device, the hydrophobic outlet of high-pressure extraction device is connected with the hydrophobic entrance of oxygen-eliminating device, the feedwater outlet of high-pressure extraction device is connected with the entrance of boiler, the heat supply of steam turbine is bled to export and is connected to the generator inlet of lithium bromide absorption type heat pump unit and the steam inlet of steam water heat exchanger, and the generator exports of lithium bromide absorption type heat pump unit and the hydrophobic outlet of steam water heat exchanger are all connected to the hydrophobic entrance of oxygen-eliminating device,
The circulating cooling water out of condenser is connected with the evaporator inlet of lithium bromide absorption type heat pump unit, the evaporator outlet of lithium bromide absorption type heat pump unit is connected with the circulating cooling water inlet of condenser, heat supply network backwater is connected with the absorber entrance of lithium bromide absorption type heat pump unit, the absorber outlet of lithium bromide absorption type heat pump unit is connected with the condenser inlet of lithium bromide absorption type heat pump unit, the condensator outlet of lithium bromide absorption type heat pump unit and being connected by heating fluid inlet of steam water heat exchanger, being fed water with heat supply network by heated fluid outlet of steam water heat exchanger is connected.
The utility model further improves and is, the pipeline that the circulating cooling water out of condenser is connected with the evaporator inlet of lithium bromide absorption type heat pump unit is provided with water circulating pump.
The utility model further improves and is, also comprises hot net water heat regenerative system, and hot net water heat regenerative system comprises water-water heat exchanger; Wherein,
The feedwater outlet that water-water heat exchanger is arranged on oxygen-eliminating device is connected on the pipeline of the feed-water intake of high-pressure extraction device; Heat supply feedwater is also connected with the heating fluid inlet of water-water heat exchanger, the heated fluid outlet of water-water heat exchanger and being connected by heating fluid inlet of steam water heat exchanger.
The utility model further improves and is, hot net water heat regenerative system also comprises the first control valve, the second control valve and water pump, second control valve and water pump are arranged in the heating fluid inlet connecting pipe of heat supply feedwater and water-water heat exchanger, the first control valve be arranged on the heated fluid outlet of water-water heat exchanger and steam water heat exchanger by heating fluid inlet connecting pipe.
Compared with prior art, the beneficial effects of the utility model are:
A kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit of the utility model, it effectively can reclaim steam-turbine unit cooling circulating water middle-low grade heat, and heat supply network supply water temperature can reach 120 degrees Celsius.Simultaneously under heat supply network user's request load decline operating mode, open two control valves, utilize in part high temperature heat supply network feedwater heating high temperature regenerator feedwater piping and feed water, can improve high temperature regenerator feed temperature, unit generation efficiency is raised.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit of the utility model.
Wherein: 1 is boiler, 2 is steam turbine, and 3 is condenser, 4 is low-pressure regenerator, and 5 is oxygen-eliminating device, and 6 is high-pressure extraction device, 7 to bleed outlet for heat supply, and 8 is water circulating pump, and 9 is the first control valve, 10 is lithium bromide absorption type heat pump unit, and 11 is water pump, and 12 is steam water heat exchanger, 13 is water-water heat exchanger, 14 is heat supply network backwater, and 15 is heat supply network water supply, and 16 is the second control valve.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is further elaborated.
See Fig. 1, a kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit of the utility model, comprises steam turbine power generation system, hot net water heating system, cooling circulating water system and hot net water heat regenerative system.
Wherein, turbine generating system comprises boiler 1, steam turbine 2, condenser 3, low-pressure regenerator 4, oxygen-eliminating device 5 and high-pressure extraction device 6; Cooling circulating water system comprises lithium bromide absorption type heat pump 10; Heat supply network water system comprises steam water heat exchanger 12; Hot net water heat regenerative system comprises water-water heat exchanger 18.
The steam (vapor) outlet of boiler 1 is connected with the main steam inlet of steam turbine 2, the exhaust steam outlet of steam turbine 2 is connected with the exhaust steam entrance of condenser 3, the condensate water outlet of condenser 3 is connected with the feed-water intake of low-pressure regenerator 4, the low pressure backheat of steam turbine 2 is bled to export and is connected with the steam inlet of low-pressure regenerator 4, the hydrophobic outlet of low-pressure regenerator 4 is connected with the hot well of condenser 3, the feedwater outlet of low-pressure regenerator 4 is connected with the feed-water intake of oxygen-eliminating device 5, the oxygen-eliminating device of steam turbine 2 is bled to export and is connected with the steam inlet of oxygen-eliminating device 5, the feedwater outlet of oxygen-eliminating device 5 is connected with the feed-water intake of high-pressure extraction device 6, the high-pressure extraction of steam turbine 2 is bled to export and is connected with the steam inlet of high-pressure extraction device 6, the hydrophobic outlet of high-pressure extraction device 6 is connected with the hydrophobic entrance of oxygen-eliminating device 5, the feedwater outlet of high-pressure extraction device 6 is connected with the entrance of boiler 1, the heat supply of steam turbine 2 outlet 7 of bleeding is connected to the generator inlet of lithium bromide absorption type heat pump unit 10 and the steam inlet of steam water heat exchanger 12, and the generator exports of lithium bromide absorption type heat pump unit 10 and the hydrophobic outlet of steam water heat exchanger 12 are all connected to the hydrophobic entrance of oxygen-eliminating device 5,
The circulating cooling water out of condenser 3 is connected with the evaporator inlet of lithium bromide absorption type heat pump unit 10, the evaporator outlet of lithium bromide absorption type heat pump unit 10 is connected with the circulating cooling water inlet of condenser 3, heat supply network backwater 14 is connected with the absorber entrance of lithium bromide absorption type heat pump unit 10, the absorber outlet of lithium bromide absorption type heat pump unit 10 is connected with the condenser inlet of lithium bromide absorption type heat pump unit 10, the condensator outlet of lithium bromide absorption type heat pump unit 10 and being connected by heating fluid inlet of steam water heat exchanger 12, being fed water by heated fluid outlet and heat supply network of steam water heat exchanger 12 15 is connected.
The feedwater outlet that water-water heat exchanger 13 is arranged on oxygen-eliminating device 5 is connected on the pipeline of the feed-water intake of high-pressure extraction device 6; Heat supply feedwater 15 is also connected with the heating fluid inlet of water-water heat exchanger 13, the heated fluid outlet of water-water heat exchanger 13 and being connected by heating fluid inlet of steam water heat exchanger 12.Hot net water heat regenerative system also comprises the first control valve 9, second control valve 16 and water pump 11, second control valve 16 and water pump 11 are arranged on heat supply feedwater 15 with in the heating fluid inlet connecting pipe of water-water heat exchanger 13, the first control valve 9 be arranged on the heated fluid outlet of water-water heat exchanger 13 and steam water heat exchanger 12 by heating fluid inlet connecting pipe.
Further, the pipeline that the circulating cooling water out of above-mentioned condenser 3 is connected with the evaporator inlet of lithium bromide absorption type heat pump unit 10 is provided with water circulating pump 8.
During work, cooling circulating water absorbs the exhaust steam of steam turbine 2 at condenser 3 liberated heat, and the recirculated cooling water after intensification enters the evaporimeter heat release cooling of lithium bromide absorption type heat pump unit 10 again.The condensate water formed after exhaust steam heat release enters the heat absorption of low-pressure regenerator 4, oxygen-eliminating device 5, high-pressure extraction device 6 and boiler 1 successively becomes main steam, and main steam enters steam turbine 2 and generates electricity and heat supply.It is the driving heat source of lithium bromide absorption type heat pump and the heating steam of steam water heat exchanger 12 that heat supply is bled.
When user's thermic load is run in design load, close the first control valve 9 and the second control valve 16, the normal heat supply of heat supply network, heat supply network backwater becomes the heat supply network feedwater 15 supply heat user of heat supply temperature at 120 degrees centigrade after entering lithium bromide absorption type heat pump unit 10 and steam water heat exchanger 12 heat absorption; And when user's thermic load is less, open the first control valve 9 and the second control valve 16, the feedwater water yield of now high temperature heat supply network feedwater 15 supply heat user reduces, the part 120 celsius temperature feedwater reduced enters water-water heater 18, being used for heating high-pressure regenerator 6 feeds water, and improves high-pressure extraction device 6 feed temperature.

Claims (4)

1. based on a high-temperature heat supply device for lithium bromide absorption type heat pump unit, it is characterized in that, comprise steam turbine power generation system, hot net water heating system and cooling circulating water system; Wherein,
Turbine generating system comprises boiler (1), steam turbine (2), condenser (3), low-pressure regenerator (4), oxygen-eliminating device (5) and high-pressure extraction device (6); Cooling circulating water system comprises lithium bromide absorption type heat pump unit (10); Heat supply network water system comprises steam water heat exchanger (12);
The steam (vapor) outlet of boiler (1) is connected with the main steam inlet of steam turbine (2), the exhaust steam outlet of steam turbine (2) is connected with the exhaust steam entrance of condenser (3), the condensate water outlet of condenser (3) is connected with the feed-water intake of low-pressure regenerator (4), the low pressure backheat of steam turbine (2) is bled to export and is connected with the steam inlet of low-pressure regenerator (4), the hydrophobic outlet of low-pressure regenerator (4) is connected with the hot well of condenser (3), the feedwater outlet of low-pressure regenerator (4) is connected with the feed-water intake of oxygen-eliminating device (5), the oxygen-eliminating device of steam turbine (2) is bled to export and is connected with the steam inlet of oxygen-eliminating device (5), the feedwater outlet of oxygen-eliminating device (5) is connected with the feed-water intake of high-pressure extraction device (6), the high-pressure extraction of steam turbine (2) is bled to export and is connected with the steam inlet of high-pressure extraction device (6), the hydrophobic outlet of high-pressure extraction device (6) is connected with the hydrophobic entrance of oxygen-eliminating device (5), the feedwater outlet of high-pressure extraction device (6) is connected with the entrance of boiler (1), the heat supply of steam turbine (2) outlet (7) of bleeding is connected to the generator inlet of lithium bromide absorption type heat pump unit (10) and the steam inlet of steam water heat exchanger (12), and the generator exports of lithium bromide absorption type heat pump unit (10) and the hydrophobic outlet of steam water heat exchanger (12) are all connected to the hydrophobic entrance of oxygen-eliminating device (5),
The circulating cooling water out of condenser (3) is connected with the evaporator inlet of lithium bromide absorption type heat pump unit (10), the evaporator outlet of lithium bromide absorption type heat pump unit (10) is connected with the circulating cooling water inlet of condenser (3), heat supply network backwater (14) is connected with the absorber entrance of lithium bromide absorption type heat pump unit (10), the absorber outlet of lithium bromide absorption type heat pump unit (10) is connected with the condenser inlet of lithium bromide absorption type heat pump unit (10), the condensator outlet of lithium bromide absorption type heat pump unit (10) and being connected by heating fluid inlet of steam water heat exchanger (12), to be fed water with heat supply network by heated fluid outlet (15) of steam water heat exchanger (12) are connected.
2. a kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit according to claim 1, it is characterized in that, the pipeline that the circulating cooling water out of condenser (3) is connected with the evaporator inlet of lithium bromide absorption type heat pump unit (10) is provided with water circulating pump (8).
3. a kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit according to claim 1, it is characterized in that, also comprise hot net water heat regenerative system, hot net water heat regenerative system comprises water-water heat exchanger (13); Wherein,
The feedwater outlet that water-water heat exchanger (13) is arranged on oxygen-eliminating device (5) is connected on the pipeline of the feed-water intake of high-pressure extraction device (6); Heat supply feedwater (15) is also connected with the heating fluid inlet of water-water heat exchanger (13), the heated fluid outlet of water-water heat exchanger (13) and being connected by heating fluid inlet of steam water heat exchanger (12).
4. a kind of high-temperature heat supply device based on lithium bromide absorption type heat pump unit according to claim 3, it is characterized in that, hot net water heat regenerative system also comprises the first control valve (9), second control valve (16) and water pump (11), second control valve (16) and water pump (11) are arranged on heat supply feedwater (15) with in the heating fluid inlet connecting pipe of water-water heat exchanger (13), first control valve (9) be arranged on the heated fluid outlet of water-water heat exchanger (13) and steam water heat exchanger (12) by heating fluid inlet connecting pipe.
CN201520394397.7U 2015-06-09 2015-06-09 High temperature heating device based on lithium bromide absorption heat pump unit Expired - Fee Related CN204987536U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823111A (en) * 2016-05-23 2016-08-03 燕山大学 Steam exhaust waste heat recovery system based on unit wet cooling unit
CN106440471A (en) * 2016-05-30 2017-02-22 李华玉 Combined heating and power system
WO2017068520A1 (en) * 2015-10-21 2017-04-27 Thermax Limited A regenerative feedwater heating system for a boiler
CN111256204A (en) * 2020-02-28 2020-06-09 上海电力大学 Heat supply optimization method of coupling absorption heat pump of thermal power plant
CN111780198A (en) * 2020-07-15 2020-10-16 西安热工研究院有限公司 Thermoelectric load wide-range adjusting system for water supply and temperature reduction heat supply

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017068520A1 (en) * 2015-10-21 2017-04-27 Thermax Limited A regenerative feedwater heating system for a boiler
CN105823111A (en) * 2016-05-23 2016-08-03 燕山大学 Steam exhaust waste heat recovery system based on unit wet cooling unit
CN106440471A (en) * 2016-05-30 2017-02-22 李华玉 Combined heating and power system
CN111256204A (en) * 2020-02-28 2020-06-09 上海电力大学 Heat supply optimization method of coupling absorption heat pump of thermal power plant
CN111256204B (en) * 2020-02-28 2021-05-11 上海电力大学 Heat supply optimization method of coupling absorption heat pump of thermal power plant
CN111780198A (en) * 2020-07-15 2020-10-16 西安热工研究院有限公司 Thermoelectric load wide-range adjusting system for water supply and temperature reduction heat supply

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Termination date: 20170609