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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water
heat
outlet
inlet
steam
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Expired - Fee Related
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CN201520394397.7U
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Chinese (zh)
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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

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  • Sorption Type Refrigeration Machines (AREA)

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

High-temperature heat supply device based on lithium bromide absorption heat pump unit
The technical field is as follows:
the utility model belongs to the energy saving and emission reduction field of steam power plant, concretely relates to high temperature heating device based on lithium bromide absorption heat pump unit.
Background art:
most of the energy loss of the thermal power plant is carried away by circulating cooling water in a condenser. In addition to a pure back pressure unit, there is still a large heat sink loss even in a heated cogeneration unit. The heat pump technology is adopted to absorb the heat in the circulating cooling water for central heating, so that the problems of energy waste and environmental heat pollution can be solved simultaneously. Meanwhile, the heat pump technology can also recover industrial waste heat and mine low-grade heat energy to achieve the purpose of saving energy. The advantages of the heat pump are evident, while continuing to add a spike steam-water heat exchanger after the heat pump can increase the temperature of the feed water. In practical application, the heat load of a user and the power generation load are changed frequently, excessive heat supply can occur under certain working conditions, and the reasonable treatment of the excessive heat is particularly important.
The utility model has the following contents:
an object of the utility model is to overcome prior art's is not enough, provides a high temperature heating device based on lithium bromide absorption heat pump unit, and it can effectual recovery low temperature recirculated cooling water low grade heat energy, can utilize partial heat supply network feedwater heating high temperature regenerator water supply pipe to feed water simultaneously under the user's heat load reduction condition, has improved high temperature regenerator feedwater temperature, has realized energy-conserving effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a high-temperature heat supply device based on a lithium bromide absorption heat pump unit comprises a steam turbine power generation system, a heat supply network water heat supply system and a cooling circulating water system; wherein,
the steam turbine power generation system comprises a boiler, a steam turbine, a condenser, a low-pressure heat regenerator, a deaerator and a high-pressure heat regenerator; the cooling circulating water system comprises a lithium bromide absorption heat pump unit; the heat supply network water supply system comprises a steam-water heat exchanger;
the steam outlet of the boiler is connected with the main steam inlet of the steam turbine, the exhaust steam outlet of the steam turbine is connected with the exhaust steam inlet of the condenser, the condensed water outlet of the condenser is connected with the water supply inlet of the low-pressure heat regenerator, the low-pressure heat regeneration air exhaust outlet of the steam turbine is connected with the steam inlet of the low-pressure heat regenerator, the drain outlet of the low-pressure heat regenerator is connected with the hot well of the condenser, the water supply outlet of the low-pressure heat regenerator is connected with the water supply inlet of the deaerator, the deaerator air exhaust outlet of the steam turbine is connected with the steam inlet of the deaerator, the water supply outlet of the deaerator is connected with the water supply inlet of the high-pressure heat regenerator, the high-pressure heat regeneration air exhaust outlet of the steam turbine is connected with the steam inlet of the high-pressure heat regenerator, the drain outlet of the high-; a heat supply and air exhaust outlet of the steam turbine is connected to a generator inlet of the lithium bromide absorption heat pump unit and a steam inlet of the steam-water heat exchanger, and a generator outlet of the lithium bromide absorption heat pump unit and a drainage outlet of the steam-water heat exchanger are both connected to a drainage inlet of the deaerator;
the circulating cooling water outlet of the condenser is connected with the evaporator inlet of the lithium bromide absorption heat pump unit, the evaporator outlet of the lithium bromide absorption heat pump unit is connected with the circulating cooling water inlet of the condenser, the return water of the heat supply network is connected with the absorber inlet of the lithium bromide absorption heat pump unit, the absorber outlet of the lithium bromide absorption heat pump unit is connected with the condenser inlet of the lithium bromide absorption heat pump unit, the condenser outlet of the lithium bromide absorption heat pump unit is connected with the heated fluid inlet of the steam-water heat exchanger, and the heated fluid outlet of the steam-water heat exchanger is connected with the water supply of the heat supply network.
The utility model discloses further improvement lies in, is provided with circulating water pump on the recirculated cooling water export of condenser and the evaporimeter entry linkage's of lithium bromide absorption heat pump unit pipeline.
The utility model has the further improvement that the utility model also comprises a heat supply network water heat recovery system which comprises a water-water heat exchanger; wherein,
the water-water heat exchanger is arranged on a pipeline, wherein a water supply outlet of the deaerator is connected to a water supply inlet of the high-pressure heat regenerator; the heating water supply is also connected with a heating fluid inlet of the water-water heat exchanger, and a heating fluid outlet of the water-water heat exchanger is connected with a heated fluid inlet of the steam-water heat exchanger.
The utility model discloses a further improvement lies in that heat supply network water backheat system still includes first governing valve, second governing valve and water pump, and second governing valve and water pump setting are on the heating fluid entry connecting tube of heat supply feedwater and water-water heat exchanger, and first governing valve setting is on the heating fluid export of water-water heat exchanger and the heated fluid entry connecting tube of vapour-water heat exchanger.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model relates to a high temperature heating device based on lithium bromide absorption heat pump unit, it can effectively retrieve steam turbine unit refrigeration cycle water low-grade heat, and heat supply network water supply temperature can reach 120 degrees centigrade. Meanwhile, under the working condition that the load required by a heat supply network user is reduced, the two regulating valves are opened, part of high-temperature heat supply network water supply is utilized to heat the water supply in the water supply pipeline of the high-temperature heat regenerator, the water supply temperature of the high-temperature heat regenerator can be increased, and the generating efficiency of the unit is improved.
Description of the drawings:
fig. 1 is a schematic structural diagram of a high-temperature heat supply device based on a lithium bromide absorption heat pump unit.
Wherein: the system comprises a boiler 1, a steam turbine 2, a condenser 3, a low-pressure heat regenerator 4, a deaerator 5, a high-pressure heat regenerator 6, a heat supply and air exhaust outlet 7, a circulating water pump 8, a first regulating valve 9, a lithium bromide absorption heat pump unit 10, a water pump 11, a steam-water heat exchanger 12, a water-water heat exchanger 13, a heat supply network backwater 14, a heat supply network water supply 15 and a second regulating valve 16.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the utility model relates to a high temperature heating device based on lithium bromide absorption heat pump unit, including steam turbine power generation system, heat supply network water heating system, cooling circulation water system and heat supply network water backheat system.
The steam turbine power generation system comprises a boiler 1, a steam turbine 2, a condenser 3, a low-pressure heat regenerator 4, a deaerator 5 and a high-pressure heat regenerator 6; the cooling circulating water system comprises a lithium bromide absorption heat pump 10; the heat supply network water supply system comprises a steam-water heat exchanger 12; the heat network water recuperation system includes a water-to-water heat exchanger 18.
A steam outlet of a boiler 1 is connected with a main steam inlet of a steam turbine 2, a steam exhaust outlet of the steam turbine 2 is connected with a steam exhaust inlet of a condenser 3, a condensed water outlet of the condenser 3 is connected with a water supply inlet of a low-pressure heat regenerator 4, a low-pressure heat regeneration air exhaust outlet of the steam turbine 2 is connected with a steam inlet of the low-pressure heat regenerator 4, a drain outlet of the low-pressure heat regenerator 4 is connected with a hot well of the condenser 3, a water supply outlet of the low-pressure heat regenerator 4 is connected with a water supply inlet of a deaerator 5, an air exhaust outlet of the steam turbine 2 is connected with a steam inlet of the deaerator 5, a water supply outlet of the deaerator 5 is connected with a water supply inlet of a high-pressure heat regenerator 6, a high-pressure heat regeneration air exhaust outlet of the steam turbine 2 is connected with a steam inlet of the high-pressure heat regenerator 6, a drain outlet of the high-pressure heat regenerator 6 is connected with; a heat supply and air extraction outlet 7 of the steam turbine 2 is connected to a generator inlet of the lithium bromide absorption heat pump unit 10 and a steam inlet of the steam-water heat exchanger 12, and a generator outlet of the lithium bromide absorption heat pump unit 10 and a hydrophobic outlet of the steam-water heat exchanger 12 are both connected to a hydrophobic inlet of the deaerator 5;
the circulating cooling water outlet of the condenser 3 is connected with the evaporator inlet of the lithium bromide absorption heat pump unit 10, the evaporator outlet of the lithium bromide absorption heat pump unit 10 is connected with the circulating cooling water inlet of the condenser 3, the heat supply network backwater 14 is connected with the absorber inlet of the lithium bromide absorption heat pump unit 10, the absorber outlet of the lithium bromide absorption heat pump unit 10 is connected with the condenser inlet of the lithium bromide absorption heat pump unit 10, the condenser outlet of the lithium bromide absorption heat pump unit 10 is connected with the heated fluid inlet of the steam-water heat exchanger 12, and the heated fluid outlet of the steam-water heat exchanger 12 is connected with the heat supply network water 15.
The water-water heat exchanger 13 is arranged on a pipeline which is connected with a water supply outlet of the deaerator 5 and a water supply inlet of the high-pressure heat regenerator 6; the feedwater 15 is also connected to the heating fluid inlet of the water-water heat exchanger 13, and the heating fluid outlet of the water-water heat exchanger 13 is connected to the heated fluid inlet of the steam-water heat exchanger 12. The heat supply network water regenerative system further comprises a first regulating valve 9, a second regulating valve 16 and a water pump 11, wherein the second regulating valve 16 and the water pump 11 are arranged on a heating fluid inlet connecting pipeline of the heat supply water 15 and the water-water heat exchanger 13, and the first regulating valve 9 is arranged on a heating fluid outlet of the water-water heat exchanger 13 and a heated fluid inlet connecting pipeline of the steam-water heat exchanger 12.
Further, a circulating water pump 8 is arranged on a pipeline connecting a circulating cooling water outlet of the condenser 3 and an evaporator inlet of the lithium bromide absorption heat pump unit 10.
When the system works, the cooling circulating water absorbs the heat released by the exhaust steam of the steam turbine 2 in the condenser 3, and the heated circulating cooling water enters the evaporator of the lithium bromide absorption heat pump unit 10 to release heat and cool. Condensed water formed after the heat release of the exhaust steam sequentially enters the low-pressure heat regenerator 4, the deaerator 5, the high-pressure heat regenerator 6 and the boiler 1 to absorb heat to become main steam, and the main steam enters the steam turbine 2 to generate power and supply heat. The heating and air extraction are the driving heat source of the lithium bromide absorption heat pump and the heating steam of the steam-water heat exchanger 12.
When the heat load of a user operates at a design value, the first regulating valve 9 and the second regulating valve 16 are closed, the heat supply network supplies heat normally, and the return water of the heat supply network enters the lithium bromide absorption heat pump unit 10 and the steam-water heat exchanger 12 to absorb heat to form heat supply network water supply 15 with the heat supply temperature of about 120 ℃ and supplies the heat supply user; when the heat load of a user is small, the first regulating valve 9 and the second regulating valve 16 are opened, the water supply quantity of the high-temperature heat supply network water supply 15 for supplying water to the user is reduced, the reduced 120-DEG C high-temperature water supply enters the water-water heater 18 for heating the water supply of the high-pressure heat regenerator 6, and the water supply temperature of the high-pressure heat regenerator 6 is increased.

Claims (4)

1. A high-temperature heating device based on a lithium bromide absorption heat pump unit is characterized by comprising a steam turbine power generation system, a heat supply network water heating system and a cooling circulating water system; wherein,
the steam turbine power generation system comprises a boiler (1), a steam turbine (2), a condenser (3), a low-pressure heat regenerator (4), a deaerator (5) and a high-pressure heat regenerator (6); the cooling circulating water system comprises a lithium bromide absorption heat pump unit (10); the heat supply network water supply system comprises a steam-water heat exchanger (12);
a steam outlet of the boiler (1) is connected with a main steam inlet of a steam turbine (2), a steam exhaust outlet of the steam turbine (2) is connected with a steam exhaust inlet of a condenser (3), a condensed water outlet of the condenser (3) is connected with a water supply inlet of a low-pressure heat regenerator (4), a low-pressure heat regeneration air exhaust outlet of the steam turbine (2) is connected with a steam inlet of the low-pressure heat regenerator (4), a drain outlet of the low-pressure heat regenerator (4) is connected with a hot well of the condenser (3), a water supply outlet of the low-pressure heat regenerator (4) is connected with a water supply inlet of a deaerator (5), a deaerator air exhaust outlet of the steam turbine (2) is connected with a steam inlet of the deaerator (5), a water supply outlet of the deaerator (5) is connected with a water supply inlet of a high-pressure heat regenerator (6), a high-pressure heat regeneration air exhaust outlet of the steam turbine (2) is connected with a steam inlet of the high-pressure heat regenerator (6), and a drain outlet of the high-pressure, the water supply outlet of the high-pressure heat regenerator (6) is connected with the inlet of the boiler (1); a heat supply and air extraction outlet (7) of the steam turbine (2) is connected to a generator inlet of the lithium bromide absorption heat pump unit (10) and a steam inlet of the steam-water heat exchanger (12), and a generator outlet of the lithium bromide absorption heat pump unit (10) and a drainage outlet of the steam-water heat exchanger (12) are both connected to a drainage inlet of the deaerator (5);
a circulating cooling water outlet of the condenser (3) is connected with an evaporator inlet of the lithium bromide absorption heat pump unit (10), an evaporator outlet of the lithium bromide absorption heat pump unit (10) is connected with a circulating cooling water inlet of the condenser (3), heat supply network backwater (14) is connected with an absorber inlet of the lithium bromide absorption heat pump unit (10), an absorber outlet of the lithium bromide absorption heat pump unit (10) is connected with a condenser inlet of the lithium bromide absorption heat pump unit (10), a condenser outlet of the lithium bromide absorption heat pump unit (10) is connected with a heated fluid inlet of the steam-water heat exchanger (12), and a heated fluid outlet of the steam-water heat exchanger (12) is connected with a heat supply network water supply (15).
2. The high-temperature heating device based on the lithium bromide absorption heat pump unit according to claim 1, wherein a circulating water pump (8) is arranged on a pipeline connecting a circulating cooling water outlet of the condenser (3) and an evaporator inlet of the lithium bromide absorption heat pump unit (10).
3. The high-temperature heating device based on the lithium bromide absorption heat pump unit according to claim 1, further comprising a heat supply network water heat recovery system, wherein the heat supply network water heat recovery system comprises a water-water heat exchanger (13); wherein,
the water-water heat exchanger (13) is arranged on a pipeline, wherein a water supply outlet of the deaerator (5) is connected to a water supply inlet of the high-pressure heat regenerator (6); the heating water supply (15) is also connected with a heating fluid inlet of the water-water heat exchanger (13), and a heating fluid outlet of the water-water heat exchanger (13) is connected with a heated fluid inlet of the steam-water heat exchanger (12).
4. The high-temperature heating device based on the lithium bromide absorption heat pump unit according to claim 3, wherein the heat supply network water heat recovery system further comprises a first regulating valve (9), a second regulating valve (16) and a water pump (11), the second regulating valve (16) and the water pump (11) are arranged on a heating fluid inlet connecting pipeline of the heating water supply (15) and the water-water heat exchanger (13), and the first regulating valve (9) is arranged on a heating fluid outlet of the water-water heat exchanger (13) and a heated fluid inlet connecting pipeline of the steam-water heat exchanger (12).
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 (10)

* 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
CN110185591A (en) * 2019-07-05 2019-08-30 河北道荣新能源科技有限公司 A kind of photo-thermal power generation energy supplying system for agricultural industry garden
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
CN111351106A (en) * 2018-12-20 2020-06-30 大连民族大学 Method for post-heating and supplying float glass by heat pump output heat exchange water
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
CN113063299A (en) * 2021-04-01 2021-07-02 首钢京唐钢铁联合有限责任公司 Vaporization cooling method and device
CN113899006A (en) * 2021-11-09 2022-01-07 东北电力大学 Heating system for driving heat pump to recover circulating water waste heat by utilizing low-pressure heater and drainage water
WO2023035149A1 (en) * 2021-09-08 2023-03-16 西门子股份公司 Industrial boiler heat supply system, and control method and control apparatus therefor

Cited By (13)

* 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
CN111351106A (en) * 2018-12-20 2020-06-30 大连民族大学 Method for post-heating and supplying float glass by heat pump output heat exchange water
CN110185591B (en) * 2019-07-05 2024-06-25 河北道荣新能源科技有限公司 Photo-thermal power generation energy supply system for agricultural industrial park
CN110185591A (en) * 2019-07-05 2019-08-30 河北道荣新能源科技有限公司 A kind of photo-thermal power generation energy supplying system for agricultural industry garden
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
CN111780198B (en) * 2020-07-15 2022-02-11 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
CN113063299A (en) * 2021-04-01 2021-07-02 首钢京唐钢铁联合有限责任公司 Vaporization cooling method and device
WO2023035149A1 (en) * 2021-09-08 2023-03-16 西门子股份公司 Industrial boiler heat supply system, and control method and control apparatus therefor
CN113899006A (en) * 2021-11-09 2022-01-07 东北电力大学 Heating system for driving heat pump to recover circulating water waste heat by utilizing low-pressure heater and drainage water

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