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 PDFInfo
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- 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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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 96
- 238000010438 heat treatment Methods 0.000 title claims abstract description 64
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000498 cooling water Substances 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
本实用新型公开了一种基于溴化锂吸收式热泵机组的高温供热装置，该高温供热装置在某小型热电联产机组中加入了溴化锂吸收式热泵机组回收循环冷却水中废热，包括汽轮机发电系统、热网水系统和热网水回热系统。热网回水在吸收式热泵和汽-水换热器吸热后供热的温度能达到120摄氏度左右，同时利用水泵抽取部分高温热网给水进入水-水换热器加热汽轮机发电系统的高压回热器给水管路中给水，在水-水换热器中放热后的部分高温热网给水将和吸收式热泵冷凝器出口的中温热网水混合后进入汽-水换热器继续加热。本实用新型提供的装置能够显著利用循环冷却水中的低品位热量来供热，同时在用户热负荷减少时能够有效提高高压回热器给水的温度，达到了节能效果。
The utility model discloses a high-temperature heating device based on a lithium bromide absorption heat pump unit. The high temperature heating device adds a lithium bromide absorption heat pump unit to a small cogeneration unit to recover waste heat in circulating cooling water, including a steam turbine power generation system, Heat network water system and heat network water recovery system. The return water of the heating network can reach a heating temperature of about 120 degrees Celsius after absorbing heat by the absorption heat pump and the steam-water heat exchanger. Feed water in the feed water pipeline of the regenerator, part of the high-temperature heating network feed water after heat release in the water-water heat exchanger will be mixed with the medium-temperature heating network water at the outlet of the absorption heat pump condenser, and then enter the steam-water heat exchanger to continue heating. The device provided by the utility model can significantly use the low-grade heat in the circulating cooling water to supply heat, and can effectively increase the temperature of the feed water of the high-pressure regenerator when the heat load of the user is reduced, thereby achieving the energy-saving effect.
Description
技术领域：Technical field:
本实用新型属于热电厂节能减排领域，具体涉及一种基于溴化锂吸收式热泵机组的高温供热装置。The utility model belongs to the field of energy saving and emission reduction of thermal power plants, in particular to a high-temperature heating device based on a lithium bromide absorption heat pump unit.
背景技术：Background technique:
火电厂能量损失中绝大部分由凝汽器中的循环冷却水带走。除了纯背压机组外，即使是在供暖的热电联产机组中仍存在大量冷源损失。采用热泵技术吸收循环冷却水中的热量进行集中供热，则可以同时解决能量浪费和环境热污染问题。同时，热泵技术还可在回收工业余热，挖掘低品位热能以达到节约能源的目的。热泵的优势是明显的，同时在热泵之后继续加入尖峰汽-水换热器能够提高供水的温度。在实际应用中往往用户热负荷和发电负荷是变化的，某些工况下可能会出现供热过多情况，合理处理好这部分过多热量尤为重要。Most of the energy loss in thermal power plants is taken away by the circulating cooling water in the condenser. In addition to purely back-pressure units, there are still substantial cold source losses even in heated CHP units. Using heat pump technology to absorb the heat in circulating cooling water for centralized heating can solve the problems of energy waste and environmental heat pollution at the same time. At the same time, heat pump technology can also recover industrial waste heat and tap low-grade heat energy to save energy. The advantage of the heat pump is obvious, and at the same time, continuing to add a peak steam-water heat exchanger after the heat pump can increase the temperature of the water supply. In practical applications, the user's heat load and power generation load often change. Under certain working conditions, there may be excessive heat supply. It is particularly important to properly handle this part of excess heat.
实用新型内容：Utility model content:
本实用新型的目的在于克服现有技术的不足，提供了一种基于溴化锂吸收式热泵机组的高温供热装置，其能够有效的回收低温循环冷却水中低品位热能，同时在用户热负荷减少情况下能够利用部分热网给水加热高温回热器给水管道中给水，提高了高温回热器给水温度，实现了节能效果。The purpose of this utility model is to overcome the deficiencies of the prior art, and provide a high-temperature heating device based on a lithium bromide absorption heat pump unit, which can effectively recover low-grade heat energy in low-temperature circulating cooling water, and at the same time reduce the heat load of the user Part of the heating network feed water can be used to heat the feed water in the high temperature regenerator feed water pipeline, which increases the feed water temperature of the high temperature regenerator and realizes the energy saving effect.
为了达到上述目的，本实用新型采用如下的技术方案予以实现：In order to achieve the above object, the utility model adopts the following technical solutions to achieve:
一种基于溴化锂吸收式热泵机组的高温供热装置，包括汽轮机发电统、热网水供热系统和冷却循环水系统；其中，A high-temperature heating device based on a lithium bromide absorption heat pump unit, including a steam turbine power generation system, a heating network water heating system and a cooling circulating water system; wherein,
汽轮机发电系统包括锅炉、汽轮机、凝汽器、低压回热器、除氧器和高压回热器；冷却循环水系统包括溴化锂吸收式热泵机组；热网供水系统包括汽-水换热器；The steam turbine power generation system includes boilers, steam turbines, condensers, low-pressure regenerators, deaerators and high-pressure regenerators; the cooling circulating water system includes lithium bromide absorption heat pump units; the heat network water supply system includes steam-water heat exchangers;
锅炉的蒸汽出口与汽轮机的主蒸汽入口连接，汽轮机的乏汽出口与凝汽器的乏汽入口连接，凝汽器的凝结水出口与低压回热器的给水入口连接，汽轮机的低压回热抽气出口与低压回热器的蒸汽入口连接，低压回热器的疏水出口与凝汽器的热井连接，低压回热器的给水出口与除氧器的给水入口连接，汽轮机的除氧器抽气出口与除氧器的蒸汽入口连接，除氧器的给水出口与高压回热器的给水入口连接，汽轮机的高压回热抽气出口与高压回热器的蒸汽入口连接，高压回热器的疏水出口与除氧器的疏水入口连接，高压回热器的给水出口与锅炉的入口连接；汽轮机的供热抽气出口连接至溴化锂吸收式热泵机组的发生器入口和汽-水换热器的蒸汽入口，溴化锂吸收式热泵机组的发生器出口和汽-水换热器的疏水出口均连接至除氧器的疏水入口；The steam outlet of the boiler is connected to the main steam inlet of the steam turbine, the exhaust steam outlet of the steam turbine is connected to the exhaust steam inlet of the condenser, the condensed water outlet of the condenser is connected to the feedwater inlet of the low-pressure regenerator, and the low-pressure regenerative heat extraction of the steam turbine The gas outlet is connected to the steam inlet of the low-pressure regenerator, the drain outlet of the low-pressure regenerator is connected to the hot well of the condenser, the feedwater outlet of the low-pressure regenerator is connected to the feedwater inlet of the deaerator, and the deaerator of the steam turbine The gas outlet is connected to the steam inlet of the deaerator, the feedwater outlet of the deaerator is connected to the feedwater inlet of the high-pressure regenerator, the high-pressure reheat extraction outlet of the steam turbine is connected to the steam inlet of the high-pressure regenerator, and the high-pressure regenerator’s The drain outlet is connected to the drain inlet of the deaerator, the feed water outlet of the high pressure regenerator is connected to the boiler inlet; the heat supply outlet of the steam turbine is connected to the generator inlet of the lithium bromide absorption heat pump unit and the steam-water heat exchanger The steam inlet, the generator outlet of the lithium bromide absorption heat pump unit and the drain outlet of the steam-water heat exchanger are all connected to the drain inlet of the deaerator;
凝汽器的循环冷却水出口与溴化锂吸收式热泵机组的蒸发器入口连接，溴化锂吸收式热泵机组的蒸发器出口与凝汽器的循环冷却水入口连接，热网回水与溴化锂吸收式热泵机组的吸收器入口连接，溴化锂吸收式热泵机组的吸收器出口与溴化锂吸收式热泵机组的冷凝器入口连接，溴化锂吸收式热泵机组的冷凝器出口与汽-水换热器的被加热流体入口连接，汽-水换热器的被加热流体出口与热网给水连接。The circulating cooling water outlet of the condenser is connected to the evaporator inlet of the lithium bromide absorption heat pump unit, the evaporator outlet of the lithium bromide absorption heat pump unit is connected to the circulating cooling water inlet of the condenser, and the return water of the heat network is connected to the lithium bromide absorption heat pump unit The absorber inlet of the lithium bromide absorption heat pump unit is connected, 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, The heated fluid outlet of the steam-water heat exchanger is connected with the heating network feed water.
本实用新型进一步的改进在于，凝汽器的循环冷却水出口与溴化锂吸收式热泵机组的蒸发器入口连接的管道上设置有循环水泵。The further improvement of the utility model is that a circulating water pump is arranged on the pipeline connecting the circulating cooling water outlet of the condenser and the evaporator inlet of the lithium bromide absorption heat pump unit.
本实用新型进一步的改进在于，还包括热网水回热系统，热网水回热系统包括水-水换热器；其中，The further improvement of the utility model is that it also includes a heating network water recovery system, and the heating network water recovery system includes a water-water heat exchanger; wherein,
水-水换热器设置在除氧器的给水出口连接至高压回热器的给水入口的管道上；供热给水还与水-水换热器的加热流体入口连接，水-水换热器的加热流体出口与汽-水换热器的被加热流体入口连接。The water-water heat exchanger is set on the pipeline connecting the feedwater outlet of the deaerator to the feedwater inlet of the high-pressure regenerator; the heating feedwater is also connected to the heating fluid inlet of the water-water heat exchanger, and the water-water heat exchanger The heated fluid outlet of the steam-water heat exchanger is connected with the heated fluid inlet.
本实用新型进一步的改进在于，热网水回热系统还包括第一调节阀、第二调节阀和水泵，第二调节阀和水泵设置在供热给水与水-水换热器的加热流体入口连接管道上，第一调节阀设置在水-水换热器的加热流体出口与汽-水换热器的被加热流体入口连接管道上。The further improvement of the utility model is that the heating network water recovery system also includes a first regulating valve, a second regulating valve and a water pump, and the second regulating valve and the water pump are arranged at the heating fluid inlet of the heating water supply and the water-water heat exchanger On the connecting pipeline, the first regulating valve is arranged on the connecting pipeline between the heating fluid outlet of the water-water heat exchanger and the heated fluid inlet of the steam-water heat exchanger.
与现有技术相比，本实用新型的有益效果在于：Compared with the prior art, the utility model has the beneficial effects of:
本实用新型一种基于溴化锂吸收式热泵机组的高温供热装置，其能够有效回收汽轮机机组冷却循环水中低品位热量，热网供水温度能够达到120摄氏度。同时在热网用户需求负荷下降工况下，开启两个调节阀，利用部分高温热网给水加热高温回热器给水管道中给水，可以提高高温回热器给水温度，机组发电效率得到升高。The utility model is a high-temperature heating device based on a lithium bromide absorption heat pump unit, which can effectively recover low-grade heat in the cooling circulating water of a steam turbine unit, and the water supply temperature of a heating network can reach 120 degrees Celsius. At the same time, under the condition that the demand load of heating network users decreases, open two regulating valves and use part of the high-temperature heating network feedwater to heat the feedwater in the high-temperature regenerator feedwater pipeline, which can increase the temperature of the high-temperature regenerator feedwater and increase the power generation efficiency of the unit.
附图说明：Description of drawings:
图1为本实用新型一种基于溴化锂吸收式热泵机组的高温供热装置的结构示意图。Fig. 1 is a structural schematic diagram of a high-temperature heating device based on a lithium bromide absorption heat pump unit of the present invention.
其中：1为锅炉，2为汽轮机，3为凝汽器，4为低压回热器，5为除氧器，6为高压回热器，7为供热抽气出口，8为循环水泵，9为第一调节阀，10为溴化锂吸收式热泵机组，11为水泵，12为汽-水换热器，13为水-水换热器，14为热网回水，15为热网供水，16为第二调节阀。Among them: 1 is the boiler, 2 is the steam turbine, 3 is the condenser, 4 is the low-pressure regenerator, 5 is the deaerator, 6 is the high-pressure regenerator, 7 is the heating and air extraction outlet, 8 is the circulating water pump, 9 10 is the lithium bromide absorption heat pump unit, 11 is the water pump, 12 is the steam-water heat exchanger, 13 is the water-water heat exchanger, 14 is the heating network return water, 15 is the heating network water supply, 16 is the second regulating valve.
具体实施方式：detailed description:
下面结合附图对本实用新型进行进一步详细说明。Below in conjunction with accompanying drawing, the utility model is described in further detail.
参见图1，本实用新型一种基于溴化锂吸收式热泵机组的高温供热装置，包括汽轮机发电统、热网水供热系统、冷却循环水系统和热网水回热系统。Referring to Fig. 1, the utility model is a high-temperature heating device based on a lithium bromide absorption heat pump unit, including a steam turbine power generation system, a heating network water heating system, a cooling circulating water system and a heating network water recovery system.
其中，汽轮机发电系统包括锅炉1、汽轮机2、凝汽器3、低压回热器4、除氧器5和高压回热器6；冷却循环水系统包括溴化锂吸收式热泵10；热网供水系统包括汽-水换热器12；热网水回热系统包括水-水换热器18。Among them, the steam turbine power generation system includes a boiler 1, a steam turbine 2, a condenser 3, a low-pressure regenerator 4, a deaerator 5, and a high-pressure regenerator 6; the cooling circulating water system includes a lithium bromide absorption heat pump 10; the heating network water supply system includes The steam-water heat exchanger 12; the heat network water recovery system includes a water-water heat exchanger 18.
锅炉1的蒸汽出口与汽轮机2的主蒸汽入口连接，汽轮机2的乏汽出口与凝汽器3的乏汽入口连接，凝汽器3的凝结水出口与低压回热器4的给水入口连接，汽轮机2的低压回热抽气出口与低压回热器4的蒸汽入口连接，低压回热器4的疏水出口与凝汽器3的热井连接，低压回热器4的给水出口与除氧器5的给水入口连接，汽轮机2的除氧器抽气出口与除氧器5的蒸汽入口连接，除氧器5的给水出口与高压回热器6的给水入口连接，汽轮机2的高压回热抽气出口与高压回热器6的蒸汽入口连接，高压回热器6的疏水出口与除氧器5的疏水入口连接，高压回热器6的给水出口与锅炉1的入口连接；汽轮机2的供热抽气出口7连接至溴化锂吸收式热泵机组10的发生器入口和汽-水换热器12的蒸汽入口，溴化锂吸收式热泵机组10的发生器出口和汽-水换热器12的疏水出口均连接至除氧器5的疏水入口；The steam outlet of boiler 1 is connected to the main steam inlet of steam turbine 2, the exhaust steam outlet of steam turbine 2 is connected to the exhaust steam inlet of condenser 3, the condensed water outlet of condenser 3 is connected to the feedwater inlet of low pressure regenerator 4, The low-pressure regenerator exhaust outlet of the steam turbine 2 is connected to the steam inlet of the low-pressure regenerator 4, the drain outlet of the low-pressure regenerator 4 is connected to the hot well of the condenser 3, and the feedwater outlet of the low-pressure regenerator 4 is connected to the deaerator 5's feedwater inlet, steam turbine 2's deaerator exhaust outlet is connected to deaerator 5's steam inlet, deaerator 5's feedwater outlet is connected to high-pressure regenerator 6's feedwater inlet, steam turbine 2's high-pressure regenerative pump The gas outlet is connected to the steam inlet of the high-pressure regenerator 6, the drain outlet of the high-pressure regenerator 6 is connected to the drain inlet of the deaerator 5, the feedwater outlet of the high-pressure regenerator 6 is connected to the inlet of the boiler 1; the supply of the steam turbine 2 The heat extraction outlet 7 is connected to the generator inlet of the lithium bromide absorption heat pump unit 10 and the steam inlet of the steam-water heat exchanger 12, the generator outlet of the lithium bromide absorption heat pump unit 10 and the drain outlet of the steam-water heat exchanger 12 Both are connected to the hydrophobic inlet of deaerator 5;
凝汽器3的循环冷却水出口与溴化锂吸收式热泵机组10的蒸发器入口连接，溴化锂吸收式热泵机组10的蒸发器出口与凝汽器3的循环冷却水入口连接，热网回水14与溴化锂吸收式热泵机组10的吸收器入口连接，溴化锂吸收式热泵机组10的吸收器出口与溴化锂吸收式热泵机组10的冷凝器入口连接，溴化锂吸收式热泵机组10的冷凝器出口与汽-水换热器12的被加热流体入口连接，汽-水换热器12的被加热流体出口与热网给水15连接。The outlet of the circulating cooling water of the condenser 3 is connected with the inlet of the evaporator of the lithium bromide absorption heat pump unit 10, the outlet of the evaporator of the lithium bromide absorption heat pump unit 10 is connected with the inlet of the circulating cooling water of the condenser 3, and the return water of the heat network 14 is connected with the The absorber inlet of the lithium bromide absorption heat pump unit 10 is connected, the absorber outlet of the lithium bromide absorption heat pump unit 10 is connected to 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 to the steam-water exchange The heated fluid inlet of the heater 12 is connected, and the heated fluid outlet of the steam-water heat exchanger 12 is connected with the heating network feed water 15 .
水-水换热器13设置在除氧器5的给水出口连接至高压回热器6的给水入口的管道上；供热给水15还与水-水换热器13的加热流体入口连接，水-水换热器13的加热流体出口与汽-水换热器12的被加热流体入口连接。热网水回热系统还包括第一调节阀9、第二调节阀16和水泵11，第二调节阀16和水泵11设置在供热给水15与水-水换热器13的加热流体入口连接管道上，第一调节阀9设置在水-水换热器13的加热流体出口与汽-水换热器12的被加热流体入口连接管道上。The water-water heat exchanger 13 is arranged on the pipeline where the feedwater outlet of the deaerator 5 is connected to the feedwater inlet of the high-pressure regenerator 6; the heating feedwater 15 is also connected with the heating fluid inlet of the water-water heat exchanger 13, and the water - The heated fluid outlet of the water heat exchanger 13 is connected to the heated fluid inlet of the steam-water heat exchanger 12 . The heating network water recovery system also includes a first regulating valve 9, a second regulating valve 16 and a water pump 11, and the second regulating valve 16 and the water pump 11 are arranged at the point where the heating supply water 15 is connected to the heating fluid inlet of the water-water heat exchanger 13 On the pipeline, the first regulating valve 9 is arranged on the pipeline connecting the heated fluid outlet of the water-water heat exchanger 13 and the heated fluid inlet of the steam-water heat exchanger 12 .
进一步的，上述凝汽器3的循环冷却水出口与溴化锂吸收式热泵机组10的蒸发器入口连接的管道上设置有循环水泵8。Further, a circulating water pump 8 is provided on the pipeline connecting the circulating cooling water outlet of the condenser 3 and the evaporator inlet of the lithium bromide absorption heat pump unit 10 .
工作时，冷却循环水吸收汽轮机2的乏汽在凝汽器3放出的热量，升温后的循环冷却水再进入溴化锂吸收式热泵机组10的蒸发器放热降温。乏汽放热后形成的凝结水依次进入低压回热器4、除氧器5、高压回热器6及锅炉1吸热成为主蒸汽，主蒸汽进入汽轮机2发电和供热。供热抽气是溴化锂吸收式热泵的驱动热源和汽-水换热器12的加热蒸汽。During operation, 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 cool down. The condensed water formed after the exhaust steam releases heat enters the low-pressure regenerator 4, the deaerator 5, the high-pressure regenerator 6 and the boiler 1 in order to absorb heat and become the main steam, and the main steam enters the steam turbine 2 for power generation and heat supply. Heat supply 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 .
当用户热负荷在设计值运行时，关闭第一调节阀9和第二调节阀16，热网正常供热，热网回水进入溴化锂吸收式热泵机组10和汽-水换热器12吸热后成为供热温度在120摄氏度左右的热网给水15供给热用户；而当用户热负荷较小时，开启第一调节阀9和第二调节阀16，此时高温热网给水15供给热用户的给水水量减小，减小的那部分120摄氏度高温给水进入水-水加热器18，用来加热高压回热器6给水，提高了高压回热器6给水温度。When the user’s heat load is operating at the design value, the first regulating valve 9 and the second regulating valve 16 are closed, the heating network supplies heat normally, and the return water of the heating network enters the lithium bromide absorption heat pump unit 10 and the steam-water heat exchanger 12 to absorb heat Afterwards, the heating network supply water 15 with a heating temperature of about 120 degrees Celsius is supplied to heat users; and when the heat load of the user is small, the first regulating valve 9 and the second regulating valve 16 are opened, and the high-temperature heating network supplying water 15 is supplied to the heat users. The amount of feed water decreases, and the reduced part of 120°C high-temperature feed water enters the water-water heater 18 to heat the feed water of the high-pressure regenerator 6 and increase the temperature of the feed water of the high-pressure regenerator 6 .
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| CN111780198A (en) * | 2020-07-15 | 2020-10-16 | 西安热工研究院有限公司 | A thermoelectric load wide-area adjustment system for water cooling and heating |
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| 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 |
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