CN105953424B - Waste heat recovery heating system of power plant - Google Patents
Waste heat recovery heating system of power plant Download PDFInfo
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- CN105953424B CN105953424B CN201610273786.3A CN201610273786A CN105953424B CN 105953424 B CN105953424 B CN 105953424B CN 201610273786 A CN201610273786 A CN 201610273786A CN 105953424 B CN105953424 B CN 105953424B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 42
- 238000011084 recovery Methods 0.000 title claims abstract description 28
- 239000002918 waste heat Substances 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 50
- 239000010908 plant waste Substances 0.000 claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 90
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Water Supply & Treatment (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
本发明公开一种电厂余热回收供热系统。该电厂余热回收供热系统用于吸收电厂锅炉(1)的余热，包括：汽轮机(2)，连接至电厂锅炉(1)，并用于吸入电厂锅炉(1)所产生的蒸汽；吸收式热泵(3)，包括发生器和冷凝器，发生器通过第一冷却管路(4)与汽轮机(2)连接，第一冷却管路(4)与发生器换热后连接至电厂锅炉(1)，冷凝器向待供热装置(5)进行供热。根据本发明的电厂余热回收供热系统，可以解决现有技术中电厂余热没有得到有效利用的问题。
The invention discloses a heat supply system for recovery of waste heat in a power plant. The power plant waste heat recovery heating system is used to absorb the waste heat of the power plant boiler (1), including: a steam turbine (2), connected to the power plant boiler (1), and used to suck the steam generated by the power plant boiler (1); an absorption heat pump ( 3), including a generator and a condenser, the generator is connected to the steam turbine (2) through the first cooling pipeline (4), and the first cooling pipeline (4) is connected to the power plant boiler (1) after exchanging heat with the generator, The condenser supplies heat to the device (5) to be heated. According to the power plant waste heat recovery heating system of the present invention, the problem that the power plant waste heat is not effectively utilized in the prior art can be solved.
Description
技术领域technical field
本发明涉及余热回收利用技术领域，具体而言，涉及一种电厂余热回收供热系统。The invention relates to the technical field of waste heat recovery and utilization, in particular to a heat supply system for power plant waste heat recovery.
背景技术Background technique
“十二五”时期是我国加快转变经济发展方式的攻坚时期，对进一步加强节能减排目标的约束机制提出了更高要求。目前，我国现有电厂综合能源率相对比较低，多数存在余热浪费严重的现象。在电厂工作过程中，其中电厂锅炉产生的大量排气余热基本上都没有得到再利用，而是通过循环冷却水系统白白浪费掉了，事实上，这部分热量是良好的低温热源，温度和流量都较为稳定，且水质相对洁净，若能够合理，将大幅度减少一次能源消耗，提升电厂供热能力，降低供热投资，减少环境污染。The "Twelfth Five-Year Plan" period is a critical period for my country to accelerate the transformation of the economic development mode, and puts forward higher requirements for further strengthening the restraint mechanism of energy conservation and emission reduction goals. At present, the comprehensive energy rate of existing power plants in my country is relatively low, and most of them have serious waste heat waste. During the working process of the power plant, a large amount of exhaust waste heat generated by the power plant boiler is basically not reused, but wasted in vain through the circulating cooling water system. In fact, this part of heat is a good low-temperature heat source, temperature and flow They are relatively stable, and the water quality is relatively clean. If it is reasonable, it will greatly reduce primary energy consumption, increase the heating capacity of the power plant, reduce heating investment, and reduce environmental pollution.
发明内容Contents of the invention
本发明实施例中提供一种电厂余热回收供热系统，可以解决现有技术中电厂余热没有得到有效利用的问题。An embodiment of the present invention provides a power plant waste heat recovery heating system, which can solve the problem that the power plant waste heat is not effectively utilized in the prior art.
为实现上述目的，本发明实施例提供一种电厂余热回收供热系统，用于吸收电厂锅炉的余热，包括：汽轮机，连接至电厂锅炉，并用于吸入电厂锅炉所产生的蒸汽；吸收式热泵，包括发生器和冷凝器，发生器通过第一冷却管路与汽轮机连接，第一冷却管路与发生器换热后连接至电厂锅炉，冷凝器向待供热装置进行供热。In order to achieve the above purpose, an embodiment of the present invention provides a power plant waste heat recovery heating system, which is used to absorb the waste heat of the power plant boiler, including: a steam turbine, connected to the power plant boiler, and used to suck the steam generated by the power plant boiler; an absorption heat pump, It includes a generator and a condenser, the generator is connected to the steam turbine through the first cooling pipeline, the first cooling pipeline is connected to the power plant boiler after exchanging heat with the generator, and the condenser supplies heat to the device to be heated.
作为优选，位于发生器与电厂锅炉之间的第一冷却管路上设置有第一凝结水箱。Preferably, a first condensed water tank is arranged on the first cooling pipeline between the generator and the power plant boiler.
作为优选，汽轮机还通过第二冷却管路与发生器连接，第二冷却管路上设置有蒸汽箱，蒸汽箱的蒸汽出口端与发生器的蒸汽入口端连接，发生器的冷凝水出口端与蒸汽箱的冷凝水入口端连接。Preferably, the steam turbine is also connected to the generator through a second cooling pipeline, a steam box is arranged on the second cooling pipeline, the steam outlet of the steam box is connected to the steam inlet of the generator, and the condensed water outlet of the generator is connected to the steam Connect to the condensate inlet port of the tank.
作为优选，电厂余热回收供热系统还包括冷却系统，冷却系统与吸收式热泵并联，冷却系统的进口端与蒸汽箱的蒸汽出口端连接，冷却系统的出口端与蒸汽箱的冷凝水入口端连接，冷却系统的进口端和出口端至少一端设置有第一控制阀。Preferably, the waste heat recovery heating system of the power plant also includes a cooling system, the cooling system is connected in parallel with the absorption heat pump, the inlet end of the cooling system is connected to the steam outlet end of the steam box, and the outlet end of the cooling system is connected to the condensed water inlet end of the steam box , At least one of the inlet end and the outlet end of the cooling system is provided with a first control valve.
作为优选，蒸汽箱的冷凝水出口与电厂锅炉之间的管路上设置有第二凝结水箱。Preferably, a second condensed water tank is arranged on the pipeline between the condensed water outlet of the steam box and the power plant boiler.
作为优选，待供热装置包括冷水管路、热水管路和用户端，冷水管路连接在用户端和冷凝器上的冷水进口端之间，热水管路连接在用户端和冷凝器上的热水出口端之间。Preferably, the device to be heated includes a cold water pipeline, a hot water pipeline and a user end, the cold water pipeline is connected between the user end and the cold water inlet port on the condenser, and the hot water pipeline is connected between the user end and the condenser between the hot water outlet ports.
作为优选，冷水管路与热水管路之间连接有调节管路，调节管路上设置有调节阀。Preferably, a regulating pipeline is connected between the cold water pipeline and the hot water pipeline, and a regulating valve is arranged on the regulating pipeline.
作为优选，热水管路上设置有第二控制阀以及与第二控制阀并联的加热管路，电厂余热回收供热系统还包括加热器，加热管路流经加热器。Preferably, the hot water pipeline is provided with a second control valve and a heating pipeline connected in parallel with the second control valve, and the waste heat recovery heating system of the power plant further includes a heater, and the heating pipeline flows through the heater.
作为优选，加热器的热源端连接至汽轮机的蒸汽输出端。Preferably, the heat source end of the heater is connected to the steam output end of the steam turbine.
作为优选，电厂锅炉的入口端设置有除氧器。Preferably, a deaerator is provided at the inlet end of the power plant boiler.
应用本发明的技术方案，电厂余热回收供热系统用于吸收电厂锅炉的余热，包括：汽轮机，连接至电厂锅炉，并用于吸入电厂锅炉所产生的蒸汽；吸收式热泵，包括发生器和冷凝器，发生器通过第一冷却管路与汽轮机连接，第一冷却管路与发生器换热后连接至电厂锅炉，冷凝器向待供热装置进行供热。吸收式热泵能够吸收电厂锅炉的蒸汽余热，然后将这一部分余热提供给待供热装置，从而可以有效利用电厂余热，提高了能源利用率，降低了能源损耗，降低供热投资，减少环境污染，提高了能源综合利用率。Applying the technical solution of the present invention, the power plant waste heat recovery heating system is used to absorb the waste heat of the power plant boiler, including: a steam turbine, connected to the power plant boiler, and used to suck the steam generated by the power plant boiler; an absorption heat pump, including a generator and a condenser , the generator is connected to the steam turbine through the first cooling pipeline, the first cooling pipeline is connected to the power plant boiler after exchanging heat with the generator, and the condenser supplies heat to the device to be heated. The absorption heat pump can absorb the steam waste heat of the power plant boiler, and then provide this part of the waste heat to the heating device, so that the waste heat of the power plant can be effectively used, the energy utilization rate is improved, the energy loss is reduced, the heating investment is reduced, and the environmental pollution is reduced. Improve the comprehensive utilization of energy.
附图说明Description of drawings
图1是本发明实施例的电厂余热回收供热系统的结构示意图。Fig. 1 is a schematic structural diagram of a power plant waste heat recovery heating system according to an embodiment of the present invention.
附图标记说明：1、电厂锅炉；2、汽轮机；3、吸收式热泵；4、第一冷却管路；5、待供热装置；6、第一凝结水箱；7、第二冷却管路；8、蒸汽箱；9、冷却系统；10、第一控制阀；11、第二凝结水箱；12、冷水管路；13、热水管路；14、用户端；15、调节管路；16、调节阀；17、第二控制阀；18、加热管路；19、加热器；20、除氧器；21、过滤器；22、泵机。Explanation of reference signs: 1. Power plant boiler; 2. Steam turbine; 3. Absorption heat pump; 4. First cooling pipeline; 5. Heating device to be supplied; 6. First condensate tank; 8. Steam tank; 9. Cooling system; 10. First control valve; 11. Second condensate tank; 12. Cold water pipeline; 13. Hot water pipeline; 14. User terminal; 15. Regulating pipeline; 16. Regulating valve; 17, second control valve; 18, heating pipeline; 19, heater; 20, deaerator; 21, filter; 22, pump.
具体实施方式detailed description
下面结合附图和具体实施例对本发明作进一步详细描述，但不作为对本发明的限定。The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
如图1所示，根据本发明的实施例，电厂余热回收供热系统用于吸收电厂锅炉1的余热，包括：汽轮机2，连接至电厂锅炉1，并用于吸入电厂锅炉1所产生的蒸汽；吸收式热泵3，包括发生器和冷凝器，发生器通过第一冷却管路4与汽轮机2连接，第一冷却管路4与发生器换热后连接至电厂锅炉1，冷凝器向待供热装置5进行供热。As shown in Figure 1, according to an embodiment of the present invention, the power plant waste heat recovery heating system is used to absorb the waste heat of the power plant boiler 1, including: a steam turbine 2, connected to the power plant boiler 1, and used to inhale the steam generated by the power plant boiler 1; The absorption heat pump 3 includes a generator and a condenser. The generator is connected to the steam turbine 2 through the first cooling pipeline 4. The first cooling pipeline 4 is connected to the power plant boiler 1 after exchanging heat with the generator. The condenser supplies heat to the The device 5 provides heat.
吸收式热泵3能够吸收电厂锅炉的蒸汽余热，然后将这一部分余热提供给待供热装置5，从而可以有效利用电厂余热，提高了能源利用率，降低了能源损耗，降低供热投资，减少环境污染，提高了能源综合利用率。优选地，在本实施例中，该吸收式热泵为溴化锂吸收式热泵。The absorption heat pump 3 can absorb the steam waste heat of the power plant boiler, and then provide this part of the waste heat to the heating device 5, so that the waste heat of the power plant can be effectively used, the energy utilization rate is improved, the energy loss is reduced, the heating investment is reduced, and the environment is reduced. Pollution, improve the comprehensive utilization of energy. Preferably, in this embodiment, the absorption heat pump is a lithium bromide absorption heat pump.
优选地，位于发生器与电厂锅炉1之间的第一冷却管路4上设置有第一凝结水箱6。发生器与第一冷却管路4内的蒸汽进行换热，使第一冷却管路4内的蒸汽可以冷却为冷凝水，在第一冷却管路4内的蒸汽经过发生器换热的过程中，可能存在部分蒸汽未完全换热冷凝的现象，此时可以通过第一凝结水箱6对未完全冷凝的蒸汽进行冷凝，使得蒸汽可以完全冷凝，然后才进入电厂锅炉1的进口端，提高与电厂锅炉1的交换能力。Preferably, a first condensed water tank 6 is provided on the first cooling pipeline 4 between the generator and the power plant boiler 1 . The generator exchanges heat with the steam in the first cooling pipeline 4, so that the steam in the first cooling pipeline 4 can be cooled into condensed water. During the heat exchange process of the steam in the first cooling pipeline 4 passing through the generator , there may be a phenomenon that part of the steam is not completely condensed through heat exchange. At this time, the incompletely condensed steam can be condensed through the first condensed water tank 6, so that the steam can be completely condensed, and then it enters the inlet of the power plant boiler 1 to improve the connection with the power plant. Exchange capacity of boiler 1.
汽轮机2还可以通过第二冷却管路7与发生器连接，第二冷却管路7上设置有蒸汽箱8，蒸汽箱8的蒸汽出口端与发生器的蒸汽入口端连接，发生器的冷凝水出口端与蒸汽箱8的冷凝水入口端连接。蒸汽箱8能够使蒸汽与冷凝水进行换热，使得蒸汽能够吸收冷凝水的热量，进一步提高蒸汽温度，降低冷凝水温度，提高蒸汽换热效率。The steam turbine 2 can also be connected with the generator through the second cooling pipeline 7, the second cooling pipeline 7 is provided with a steam box 8, the steam outlet end of the steam box 8 is connected with the steam inlet end of the generator, and the condensed water of the generator The outlet port is connected with the condensed water inlet port of the steam box 8 . The steam box 8 can exchange heat between the steam and the condensed water, so that the steam can absorb the heat of the condensed water, further increase the temperature of the steam, reduce the temperature of the condensed water, and improve the heat exchange efficiency of the steam.
电厂余热回收供热系统还包括冷却系统9，冷却系统9与吸收式热泵3并联，冷却系统9的进口端与蒸汽箱8的蒸汽出口端连接，冷却系统9的出口端与蒸汽箱8的冷凝水入口端连接，冷却系统9的进口端和出口端至少一端设置有第一控制阀10。The waste heat recovery heating system of the power plant also includes a cooling system 9, which is connected in parallel with the absorption heat pump 3, the inlet end of the cooling system 9 is connected to the steam outlet end of the steam box 8, and the outlet end of the cooling system 9 is connected to the condensation of the steam box 8. The water inlet port is connected, and at least one of the inlet port and the outlet port of the cooling system 9 is provided with a first control valve 10 .
冷却系统9包括冷却塔，冷却系统9可以对从蒸汽箱8流出的蒸汽进行冷凝换热，从而使从电厂锅炉1内流出的蒸汽更加完全地冷凝，可以提高蒸汽的冷凝效率。在实际的工作过程中，可以根据需要调节第一控制阀10的开度，从而控制冷却系统9的冷凝能力，进而控制调节第二冷却管路7与发生器之间的换热能力，使得电厂余热回收供热系统具有较高的整体能效。The cooling system 9 includes a cooling tower, and the cooling system 9 can condense and exchange heat for the steam flowing out of the steam box 8 , so that the steam flowing out of the power plant boiler 1 can be condensed more completely, and the condensation efficiency of the steam can be improved. In the actual working process, the opening of the first control valve 10 can be adjusted according to the needs, thereby controlling the condensation capacity of the cooling system 9, and then controlling and adjusting the heat exchange capacity between the second cooling pipeline 7 and the generator, so that the power plant The waste heat recovery heating system has high overall energy efficiency.
优选地，蒸汽箱8的冷凝水出口与电厂锅炉1之间的管路上设置有第二凝结水箱11。第二凝结水箱11可以对经过冷却系统9和吸收式热泵3换热之后的冷凝水再次进行冷凝，使得冷凝水中可能含有的蒸汽能够更加彻底地被冷凝成冷凝水，可以对电厂锅炉1起到更好的冷却换热作用。Preferably, a second condensed water tank 11 is provided on the pipeline between the condensed water outlet of the steam tank 8 and the power plant boiler 1 . The second condensed water tank 11 can condense the condensed water after the heat exchange between the cooling system 9 and the absorption heat pump 3 again, so that the steam that may be contained in the condensed water can be more completely condensed into condensed water, which can play a role in power plant boiler 1 Better cooling and heat transfer effect.
在实际的使用过程中，电厂余热回收供热系统可以仅设置第一冷却管路4，也可以仅设置第二冷却管路7，还可以两个冷却管路同时存在。In actual use, the waste heat recovery heating system of the power plant may only be provided with the first cooling pipeline 4, or only the second cooling pipeline 7, or both cooling pipelines may exist simultaneously.
待供热装置5包括冷水管路12、热水管路13和用户端14，冷水管路12连接在用户端14和冷凝器上的冷水进口端之间，热水管路13连接在用户端14和冷凝器上的热水出口端之间。用户端14内的冷水通过冷水管路12输送到吸收式热泵3内吸收吸收式热泵3的冷凝放热，冷水管路12内的冷水被加热后，经热水管路13回流至用户端14，供用户取用热水，可以方便地利用吸收式热泵换热过程中所释放的热量，提高能源利用率，而且该热源清洁无污染，是对能源的再利用，可以减少能源耗费，降低环境污染。The heating device 5 includes a cold water pipeline 12, a hot water pipeline 13 and a user end 14, the cold water pipeline 12 is connected between the user end 14 and the cold water inlet port on the condenser, and the hot water pipeline 13 is connected to the user end 14 and the hot water outlet port on the condenser. The cold water in the user terminal 14 is transported to the absorption heat pump 3 through the cold water pipeline 12 to absorb the condensation heat of the absorption heat pump 3, and the cold water in the cold water pipeline 12 is heated and then flows back to the user terminal 14 through the hot water pipeline 13 , for users to take hot water, can conveniently use the heat released in the heat exchange process of the absorption heat pump, improve energy utilization rate, and the heat source is clean and pollution-free, it is the reuse of energy, which can reduce energy consumption and environment pollute.
优选地，冷水管路12与热水管路13之间连接有调节管路15，调节管路15上设置有调节阀16。在需要对热水管路13内的热水温度进行调节时，可以调节调节阀16的开度，从而控制冷水管路12内的冷水进入热水管路13内与热水进行混合的量，使得热水温度能够满足用户需要，提高水温调节的灵活性，提高用户使用的舒适度。Preferably, a regulating pipeline 15 is connected between the cold water pipeline 12 and the hot water pipeline 13, and a regulating valve 16 is arranged on the regulating pipeline 15. When it is necessary to adjust the temperature of the hot water in the hot water pipeline 13, the opening degree of the regulating valve 16 can be adjusted to control the amount of cold water in the cold water pipeline 12 entering the hot water pipeline 13 and mixing with the hot water. The temperature of hot water can meet the needs of users, the flexibility of water temperature adjustment is improved, and the comfort of users is improved.
优选地，热水管路13上设置有第二控制阀17以及与第二控制阀17并联的加热管路18，电厂余热回收供热系统还包括加热器19，加热管路18流经加热器19。当热水管路13内的水温无法满足用户需要时，此时可以关闭第二控制阀17，使热水流经加热器19内再次加热升温，从而使热水管路13内的水温能够满足用户需要。在调节水温的过程中，也可以控制第二控制阀17的开度，从而控制加热水量，使得水温能够更好地满足需要，同时能够降低加热器19的加热功耗。Preferably, the hot water pipeline 13 is provided with a second control valve 17 and a heating pipeline 18 connected in parallel with the second control valve 17, and the waste heat recovery heating system of the power plant also includes a heater 19, and the heating pipeline 18 flows through the heater 19. When the water temperature in the hot water pipeline 13 cannot meet the needs of the user, the second control valve 17 can be closed at this time to allow the hot water to flow through the heater 19 to heat up again, so that the water temperature in the hot water pipeline 13 can meet the requirements. user needs. In the process of adjusting the water temperature, the opening degree of the second control valve 17 can also be controlled, thereby controlling the amount of heated water, so that the water temperature can better meet the needs, and at the same time, the heating power consumption of the heater 19 can be reduced.
优选地，加热器19的热源端连接至汽轮机2的蒸汽输出端，可以利用汽轮机2内的蒸汽热量对热水管路13内的热水进行再加热，而不用通过电加热等方式使加热器19对热水管路13内的热水进行再加热，进一步降低了能源消耗，节约了能源。Preferably, the heat source end of the heater 19 is connected to the steam output end of the steam turbine 2, and the heat of the steam in the steam turbine 2 can be used to reheat the hot water in the hot water pipeline 13 without making the heater 19 reheating the hot water in the hot water pipeline 13 further reduces energy consumption and saves energy.
电厂锅炉1的入口端设置有除氧器20，可以对进入电厂锅炉1内的冷凝水进行除氧，避免冷凝水对电厂锅炉1进行氧化，对电厂锅炉1形成有效保护，延长电厂锅炉1的使用寿命。The inlet of the power plant boiler 1 is provided with a deaerator 20, which can deoxygenate the condensed water entering the power plant boiler 1, prevent the condensed water from oxidizing the power plant boiler 1, effectively protect the power plant boiler 1, and prolong the service life of the power plant boiler 1. service life.
在冷水管路12的进口端还可以设置过滤器21，从而对用户使用的水源进行过滤，避免杂物等进入水管对水管造成损坏，也避免水质不干净而对用户身体造成伤害，提高系统使用时的安全性。A filter 21 can also be set at the inlet end of the cold water pipeline 12, thereby filtering the water source used by the user, preventing debris and the like from entering the water pipe and causing damage to the water pipe, and also avoiding the water quality being unclean and causing harm to the user's body, and improving the use of the system. security at the time.
用户端可以为多个，多个用户端并联设置，从而使得电厂余热回收供热系统可以同时为多个用户提供热水，可以同时满足更多用户的需求。Multiple user terminals can be set up in parallel, so that the waste heat recovery heating system of the power plant can provide hot water for multiple users at the same time, and can meet the needs of more users at the same time.
为了保证系统运行时具有足够的动力，在热水管路13、第一冷却管路4、第二冷却管路7中至少之一上设置有泵机22，从而为蒸汽或者水的流动提供足够的动力，保证系统的正常运行。In order to ensure that the system has sufficient power during operation, at least one of the hot water pipeline 13, the first cooling pipeline 4, and the second cooling pipeline 7 is provided with a pump 22, so as to provide sufficient power for the flow of steam or water. power to ensure the normal operation of the system.
在电厂锅炉1的进口端也可以设置泵机22，从而为电厂锅炉1内的冷凝水循环提供动力。A pump 22 may also be provided at the inlet end of the power plant boiler 1 to provide power for the condensed water circulation in the power plant boiler 1 .
当然，以上是本发明的优选实施方式。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明基本原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。Of course, the above are preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the basic principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.
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