CN108167076A - A kind of synthesis distributed energy resource system of steam Optimum utilization - Google Patents
A kind of synthesis distributed energy resource system of steam Optimum utilization Download PDFInfo
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- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000003786 synthesis reaction Methods 0.000 title 1
- 238000005057 refrigeration Methods 0.000 claims abstract description 81
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000010248 power generation Methods 0.000 claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003546 flue gas Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002918 waste heat Substances 0.000 claims abstract description 24
- 239000003345 natural gas Substances 0.000 claims abstract description 20
- 230000005611 electricity Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000032258 transport Effects 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims description 30
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
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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
- Y02A30/272—Solar heating or cooling
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
一种蒸汽优化利用的综合分布式能源系统，采用天然气发电系统产出电能，并将产生的高温烟气回收到余热锅炉；余热锅炉将高温烟气转化为蒸汽并为蒸汽发电系统提供动力来源，剩余烟气为热利用系统提供热能；蒸汽发电系统将蒸汽一方面输送到蒸汽存储系统，另一方面与太阳能集热系统提供的蒸汽混合用于产出电能；太阳能集热系统产出蒸汽并分别输送给蒸汽发电系统和蒸汽存储系统；热利用系统利用剩余烟气以及蒸汽存储系统中并未被多选择制冷系统利用的蒸汽，产出生活热水；多选择制冷系统通过三种不同的制冷方式提供冷气供应。本发明优化了蒸汽利用的过程，有效地提高了能源利用率，为不同品位的能量提供了更适宜、更充足的能源供应。
A comprehensive distributed energy system for optimized utilization of steam, which uses natural gas power generation system to generate electricity, and recycles the generated high-temperature flue gas to the waste heat boiler; the waste heat boiler converts high-temperature flue gas into steam and provides a power source for the steam power generation system. The remaining flue gas provides thermal energy for the heat utilization system; the steam power generation system transports the steam to the steam storage system on the one hand, and mixes it with the steam provided by the solar thermal collection system to generate electricity; the solar thermal collection system produces steam and separates It is sent to the steam power generation system and the steam storage system; the heat utilization system uses the remaining flue gas and the steam in the steam storage system that is not used by the multi-choice refrigeration system to produce domestic hot water; the multi-choice refrigeration system uses three different refrigeration methods Air-conditioning is provided. The invention optimizes the steam utilization process, effectively improves the energy utilization rate, and provides more suitable and sufficient energy supply for energy of different grades.
Description
技术领域technical field
本发明属于分布式能源领域，具体涉及一种蒸汽优化利用的综合分布式能源系统。The invention belongs to the field of distributed energy, and in particular relates to a comprehensive distributed energy system for optimized utilization of steam.
背景技术Background technique
分布式能源系统是一种建在用户端的能源供应方式，可独立运行，也可以并网运行，是以资源、环境效益最大化确定方式和容量的系统，将用户多种能源需求，以及资源配置状况进行系统整合优化，采用需求应对式设计和模式化配置的新型能源系统是相对集中供能的分散式供能方式。Distributed energy system is an energy supply method built on the user side, which can operate independently or in parallel with the grid. It is a system that determines the mode and capacity by maximizing resources and environmental benefits, and integrates the user's various energy needs and resource allocation. The new energy system that adopts demand-responsive design and modular configuration is a decentralized energy supply method that is relatively centralized.
分布式能源系统对能量的利用更加严格，其目标是获得从一次能源到终端利用全过程的最高能效和最大经济效益。这要通过在整个系统安排科学、优化用能，包括从一次能源的选择，到中间各环节的二次能源的综合利用，直到最后的终端需求的优化选择。Distributed energy systems are stricter on the utilization of energy, and its goal is to obtain the highest energy efficiency and the greatest economic benefits in the whole process from primary energy to terminal utilization. This is done through arranging scientifically and optimizing energy use in the entire system, including the selection of primary energy, the comprehensive utilization of secondary energy in the intermediate links, and the optimal selection of the final terminal demand.
随着社会可持续发展的需要，可再生能源在整个能源系统中所占比例越来越大，如取之不尽的太阳能，其光热利用温度可以从50℃到1000℃，应用范围广。分布式能源系统内部不同的子系统或过程对输入的热能有不同的要求，因此将太阳能利用与天然气能源系统综合集成，根据不同品位的能量需求提供相应的能源供应，以获得最大能源利用效率，这即是本系统的技术背景所在。With the need of sustainable development of the society, the proportion of renewable energy in the entire energy system is increasing. For example, the inexhaustible solar energy can be used in a wide range of applications from 50°C to 1000°C. Different subsystems or processes in the distributed energy system have different requirements for the input heat energy. Therefore, the solar energy utilization and the natural gas energy system are integrated, and the corresponding energy supply is provided according to the energy demand of different grades to obtain the maximum energy utilization efficiency. This is the technical background of the system.
发明内容Contents of the invention
本发明针对现有技术中的不足，提供一种蒸汽优化利用的综合分布式能源系统。The invention aims at the deficiencies in the prior art, and provides a comprehensive distributed energy system for optimal utilization of steam.
为实现上述目的，本发明采用以下技术方案：To achieve the above object, the present invention adopts the following technical solutions:
一种蒸汽优化利用的综合分布式能源系统，其特征在于，包括：天然气发电系统、余热锅炉、蒸汽发电系统、太阳能集热系统、蒸汽存储系统、热利用系统和多选择制冷系统；A comprehensive distributed energy system for optimized utilization of steam, characterized in that it includes: a natural gas power generation system, a waste heat boiler, a steam power generation system, a solar heat collection system, a steam storage system, a heat utilization system and a multi-selection refrigeration system;
所述天然气发电系统一方面通过天然气产出电能供给到用电终端，另一方面将产电过程中产生的高温烟气通过烟气管道回收到余热锅炉；On the one hand, the natural gas power generation system supplies electricity to the power consumption terminal through the natural gas output, and on the other hand, the high-temperature flue gas generated during the power generation process is recovered to the waste heat boiler through the flue gas pipeline;
所述余热锅炉将高温烟气转化为蒸汽并通过蒸汽管道为蒸汽发电系统提供动力来源，剩余未完全利用的烟气则通过烟气管道为热利用系统提供热能；The waste heat boiler converts high-temperature flue gas into steam and provides a power source for the steam power generation system through the steam pipeline, and the remaining incompletely utilized flue gas provides heat energy for the heat utilization system through the flue gas pipeline;
所述蒸汽发电系统将蒸汽一方面通过蒸汽管道输送到蒸汽存储系统，另一方面与太阳能集热系统提供的蒸汽混合用于产出电能，并供给到用电终端；The steam power generation system transports the steam to the steam storage system through the steam pipeline on the one hand, and mixes it with the steam provided by the solar heat collection system to generate electric energy, and supplies it to the power consumption terminal;
所述太阳能集热系统利用太阳能产出蒸汽并通过蒸汽管道分别输送给蒸汽发电系统和蒸汽存储系统作为补充；The solar heat collection system utilizes solar energy to produce steam and transports it to the steam power generation system and the steam storage system respectively through steam pipelines as a supplement;
所述蒸汽存储系统通过蒸汽管道为热利用系统和多选择制冷系统提供蒸汽来源；The steam storage system provides a steam source for the heat utilization system and the multi-select refrigeration system through the steam pipeline;
所述热利用系统利用余热锅炉剩余未完全利用的烟气以及蒸汽存储系统中并未被多选择制冷系统利用的蒸汽，产出生活热水供给到用热终端；The heat utilization system utilizes the remaining incompletely utilized flue gas of the waste heat boiler and the steam in the steam storage system that is not utilized by the multi-select refrigeration system to produce domestic hot water and supply it to the heat-consuming terminal;
所述多选择制冷系统通过三种不同的制冷方式为用冷终端提供冷气供应。The multi-choice refrigeration system provides cold air supply for the cold terminals through three different refrigeration modes.
为优化上述技术方案，采取的具体措施还包括：In order to optimize the above technical solutions, the specific measures taken also include:
所述天然气发电系统包括燃气轮机和第一发电机，燃气轮机利用天然气做功并驱动第一发电机发电，同时燃气轮机产生的高温烟气流入余热锅炉中。The natural gas power generation system includes a gas turbine and a first generator. The gas turbine uses natural gas to perform work and drives the first generator to generate electricity. At the same time, the high-temperature flue gas generated by the gas turbine flows into the waste heat boiler.
所述蒸汽发电系统包括抽凝汽轮机和第二发电机，余热锅炉将蒸汽输送至抽凝汽轮机，抽凝汽轮机将蒸汽一方面输送到蒸汽存储系统中，另一方面与太阳能集热系统提供的蒸汽混合，驱动第二发电机发电。The steam power generation system includes an extraction condensing turbine and a second generator. The waste heat boiler delivers steam to the extraction condensing turbine. Mixed, drives the second generator to generate electricity.
所述多选择制冷系统包括控制器、蒸汽分流控制阀、蒸汽吸收制冷机组、蓄冰制冷装置和电压缩制冷装置，控制器在蒸汽吸收制冷机组、蓄冰制冷装置和电压缩制冷装置这三种制冷方式中进行选择，蒸汽存储系统为蒸汽吸收制冷机组提供蒸汽来源，蒸汽分流控制阀设置在蒸汽吸收制冷机组和蓄冰制冷装置之间，在蒸汽分流控制阀的控制下，蒸汽吸收制冷机组使用后剩余的蒸汽能够输送至蓄冰制冷装置进行利用。The multi-choice refrigeration system includes a controller, a steam diversion control valve, a vapor absorption refrigeration unit, an ice storage refrigeration unit and an electric compression refrigeration unit, and the controller is divided into three types: the vapor absorption refrigeration unit, the ice storage refrigeration unit and the electric compression refrigeration unit. Choose among refrigeration methods, the steam storage system provides the steam source for the steam absorption refrigeration unit, the steam split control valve is set between the steam absorption refrigeration unit and the ice storage refrigeration unit, under the control of the steam distribution control valve, the steam absorption refrigeration unit uses The remaining steam can be sent to the ice storage refrigeration device for utilization.
所述热利用系统包括热交换器和热水存储设备，热交换器利用余热锅炉剩余未完全利用的烟气以及蒸汽存储系统中并未被蒸汽吸收制冷机组利用的蒸汽对冷水进行加热，并产出热水存储在热水存储设备。The heat utilization system includes a heat exchanger and a hot water storage device. The heat exchanger uses the remaining incompletely used flue gas of the waste heat boiler and the steam in the steam storage system that is not used by the steam absorption refrigeration unit to heat the cold water and generate The hot water is stored in the hot water storage device.
所述太阳能集热系统包括太阳能集热器、输水管道、蒸汽输出管道和蒸汽分流控制阀，太阳能集热器利用太阳能对输水管道输入的水进行加热，并产生蒸汽通过蒸汽分流控制阀和蒸汽输出管道分别输送至蒸汽发电系统和蒸汽存储系统。The solar heat collection system includes a solar heat collector, a water delivery pipeline, a steam output pipeline and a steam diversion control valve. The solar heat collector uses solar energy to heat the water input by the water delivery pipeline, and generates steam to pass through the steam diversion control valve and the steam diversion control valve. The steam output pipeline is respectively sent to the steam power generation system and the steam storage system.
所述蒸汽存储系统包括蒸汽存储设备和蒸汽分流控制阀，蒸汽存储设备中存储的蒸汽通过蒸汽分流控制阀分别输送至热利用系统和多选择制冷系统。The steam storage system includes a steam storage device and a steam distribution control valve, and the steam stored in the steam storage device is sent to the heat utilization system and the multi-selection refrigeration system respectively through the steam distribution control valve.
所述蒸汽吸收制冷机组为溴化锂蒸汽吸收制冷机组。The vapor absorption refrigeration unit is a lithium bromide vapor absorption refrigeration unit.
所述蓄冰制冷装置包括氨吸收制冰机组、传送带、蓄冰槽以及蓄冰制冷机组，氨吸收制冰机组吸收蒸汽吸收制冷机组使用后剩余的蒸汽制冰，产出的冰通过传送带送入蓄冰槽中，蓄冰制冷机组为用户供冷。The ice storage refrigeration device includes an ammonia absorption ice making unit, a conveyor belt, an ice storage tank and an ice storage refrigeration unit. The ammonia absorption ice making unit absorbs steam and absorbs the remaining steam after the refrigeration unit is used to make ice, and the produced ice is sent into the air through the conveyor belt. In the ice storage tank, the ice storage refrigeration unit provides cooling for the user.
本发明的有益效果是：在传统的天然气分布式能源系统的基础上复合了太阳能这种可再生能源，优化了蒸汽利用的过程，有效地提高了能源利用率，为不同品位的能量提供了更适宜、更充足的能源供应，同时天然气与太阳能的结合，以及多选择制冷系统的设计让太阳能这种非稳定能源能够稳定利用。The beneficial effects of the present invention are: on the basis of the traditional natural gas distributed energy system, the renewable energy such as solar energy is compounded, the steam utilization process is optimized, the energy utilization rate is effectively improved, and more energy is provided for different grades of energy. Appropriate and more sufficient energy supply, and the combination of natural gas and solar energy, as well as the design of multi-choice refrigeration systems allow the stable use of solar energy, an unstable energy source.
附图说明Description of drawings
图1是本发明的整体结构示意图。Fig. 1 is a schematic diagram of the overall structure of the present invention.
具体实施方式Detailed ways
现在结合附图对本发明作进一步详细的说明。The present invention is described in further detail now in conjunction with accompanying drawing.
如图1所示的蒸汽优化利用的综合分布式能源系统，包括天然气发电系统、余热锅炉、蒸汽发电系统、太阳能集热系统、蒸汽存储系统、热利用系统以及多选择制冷系统。The integrated distributed energy system for optimized utilization of steam as shown in Figure 1 includes natural gas power generation system, waste heat boiler, steam power generation system, solar heat collection system, steam storage system, heat utilization system and multi-selection refrigeration system.
天然气发电系统一方面通过第一发电机产出电能，另一方面将高温烟气通过烟气管道回收到余热锅炉。余热锅炉将高温烟气转化为蒸汽通过蒸汽管道为蒸汽发电系统提供动力来源，剩余未利用完全的烟气通过烟气管道为热利用系统提供热能。蒸汽发电系统将蒸汽一方面通过蒸汽管道输送到蒸汽存储系统，另一方面与太阳能集热系统提供的蒸汽混合，通过第二发电机产出电能。太阳能集热系统产出蒸汽通过蒸汽管道分别输送给蒸汽发电系统和蒸汽存储系统作为补充。蒸汽存储系统为热利用系统和多选择制冷系统通过蒸汽管道提供蒸汽来源。热利用系统利用余热锅炉剩余烟气以及蒸汽存储系统中的多选择制冷系统未利用的蒸汽，通入热交换器中产出生活热水。多选择制冷系统通过三种不同制冷方式的综合利用为用户提供最合理冷气供应。On the one hand, the natural gas power generation system generates electric energy through the first generator, and on the other hand, the high-temperature flue gas is recovered to the waste heat boiler through the flue gas pipeline. The waste heat boiler converts the high-temperature flue gas into steam to provide a power source for the steam power generation system through the steam pipeline, and the remaining unused flue gas provides heat energy for the heat utilization system through the flue gas pipeline. The steam power generation system transports the steam to the steam storage system through the steam pipeline on the one hand, and mixes it with the steam provided by the solar heat collection system on the other hand to generate electricity through the second generator. The steam produced by the solar heat collection system is sent to the steam power generation system and the steam storage system respectively through the steam pipeline as a supplement. The steam storage system provides the steam source through the steam pipeline for the heat utilization system and the multi-select refrigeration system. The heat utilization system uses the residual flue gas of the waste heat boiler and the unused steam of the multi-selection refrigeration system in the steam storage system, and passes it into the heat exchanger to produce domestic hot water. The multi-choice refrigeration system provides users with the most reasonable air-conditioning supply through the comprehensive utilization of three different refrigeration methods.
天然气发电系统包括燃气轮机和第一发电机，燃气轮机以天然气为燃烧气体，做功并驱动第一发电机发电，同时燃气轮机产生的高温烟气流入余热锅炉中。The natural gas power generation system includes a gas turbine and a first generator. The gas turbine uses natural gas as the combustion gas to perform work and drive the first generator to generate electricity. At the same time, the high-temperature flue gas generated by the gas turbine flows into the waste heat boiler.
蒸汽发电机包括抽凝汽轮机和第二发电机，余热锅炉将蒸汽输送至抽凝汽轮机，抽凝汽轮机将蒸汽一方面输送到蒸汽存储系统中，另一方面与太阳能集热系统提供的蒸汽混合，驱动第二发电机发电。第一、第二发电机产生的电能可以满足用电终端的用电需求，这种需求在系统中包括：可以提供该系统中的设备用电，如电压缩制冷装置；剩余电量可以并网。The steam generator includes an extraction condensing turbine and a second generator. The waste heat boiler sends steam to the extraction condensing turbine. The extraction condensing turbine sends the steam to the steam storage system on the one hand, and mixes it with the steam provided by the solar heat collection system on the other hand. Drive the second generator to generate electricity. The electric energy generated by the first and second generators can meet the electricity demand of the power consumption terminal. This demand includes in the system: it can provide electricity for the equipment in the system, such as an electric compression refrigeration device; the remaining electricity can be connected to the grid.
太阳能集热系统包括太阳能集热器、输水管道、蒸汽输出管道以及蒸汽分流控制阀，太阳能集热器利用太阳能对输水管道输入的水进行加热，并产生蒸汽通过蒸汽分流控制阀和蒸汽输出管道分别输送至蒸汽发电系统和蒸汽存储系统。The solar heat collection system includes a solar collector, a water pipeline, a steam output pipeline and a steam diversion control valve. The solar collector uses solar energy to heat the water input by the water pipeline, and generates steam that passes through the steam diversion control valve and steam output. The pipelines are respectively sent to the steam power generation system and the steam storage system.
蒸汽存储系统包括蒸汽存储设备以及蒸汽分流控制阀，蒸汽存储设备中存储的蒸汽通过蒸汽分流控制阀分别输送至热利用系统和多选择制冷系统。The steam storage system includes a steam storage device and a steam distribution control valve, and the steam stored in the steam storage device is sent to the heat utilization system and the multi-selection refrigeration system respectively through the steam distribution control valve.
热利用系统包括热交换器、输水管道以及热水存储设备，热交换器利用余热锅炉剩余未完全利用的烟气以及蒸汽存储系统中并未被蒸汽吸收制冷机组利用的蒸汽对冷水进行加热，并产出热水存储在热水存储设备。The heat utilization system includes heat exchangers, water pipelines and hot water storage equipment. The heat exchanger uses the remaining incomplete flue gas of the waste heat boiler and the steam in the steam storage system that has not been used by the steam absorption refrigeration unit to heat the cold water. And the output hot water is stored in the hot water storage device.
多选择制冷系统包括控制器、溴化锂蒸汽吸收制冷机组、蒸汽分流控制阀、蓄冰制冷装置和电压缩制冷装置。控制器在蒸汽吸收制冷机组、蓄冰制冷装置和电压缩制冷装置这三种制冷方式中进行选择，蒸汽存储系统为蒸汽吸收制冷机组提供蒸汽来源，蒸汽分流控制阀设置在蒸汽吸收制冷机组和蓄冰制冷装置之间，在蒸汽分流控制阀的控制下，蒸汽吸收制冷机组使用后剩余的蒸汽能够输送至蓄冰制冷装置进行利用。根据用户用冷的需求量以及蒸汽存储系统中蒸汽的存储量，控制器会选择不同的制冷方式。当太阳能充足且用户用冷需求量多时，则通过溴化锂蒸汽吸收制冷机组为用户提供冷气，若冷气不足时控制器可控制电压缩制冷作为补充。当太阳能充足且用户用冷需求量少时，在蒸汽分流控制阀的控制下，可以让溴化锂机组使用后的剩余蒸汽被氨吸收蓄冰制冷装置利用，产冰并存储下来，此外，在特定时节（冬天）还可以通过蒸汽存储系统进行蒸汽的分流控制，将更多的蒸汽用于产出热水，满足用户用冷需求量少但用热需求量多的这种情况。当太阳能不足时，例如夜间，（有存冰）可以用蓄冰制冷装置满足用户用冷需求，若冷气不足时控制器可控制电压缩制冷作为补充。在太阳能极其匮乏的时候（无存冰），电压缩制冷是用户用冷需求的保障。The multi-choice refrigeration system includes a controller, a lithium bromide vapor absorption refrigeration unit, a vapor diversion control valve, an ice storage refrigeration unit and an electric compression refrigeration unit. The controller can choose among three refrigeration methods: vapor absorption refrigeration unit, ice storage refrigeration unit and electric compression refrigeration unit. The vapor storage system provides steam source for the vapor absorption refrigeration unit. Between the ice refrigeration devices, under the control of the steam diversion control valve, the remaining steam after the use of the steam absorption refrigeration unit can be transported to the ice storage refrigeration device for utilization. According to the user's cooling demand and the storage capacity of steam in the steam storage system, the controller will choose different cooling methods. When the solar energy is sufficient and the user has a large demand for cooling, the lithium bromide vapor absorption refrigeration unit will provide the user with cooling air. If the cooling air is insufficient, the controller can control the electric compression refrigeration as a supplement. When the solar energy is sufficient and the user’s cooling demand is low, under the control of the steam diversion control valve, the remaining steam after use of the lithium bromide unit can be used by the ammonia absorption ice storage refrigeration device to produce ice and store it. In addition, in a specific season (Winter) Steam diversion control can also be carried out through the steam storage system, and more steam can be used to produce hot water to meet the situation that users have less demand for cooling but more demand for heat. When the solar energy is insufficient, such as at night, (with ice storage), the ice storage refrigeration device can be used to meet the cooling needs of the user. If the air conditioning is insufficient, the controller can control the electric compression refrigeration as a supplement. When solar energy is extremely scarce (no ice storage), electric compression refrigeration is the guarantee for users' cooling needs.
蓄冰制冷装置包括氨吸收制冰机组、传送带、蓄冰槽以及蓄冰制冷机组，氨吸收制冰机组吸收低压蒸汽（溴化锂机组使用后剩余蒸汽）制冰，产出的冰通过传送带送入蓄冰槽中，需要时再开启蓄冰制冷机组为用户供冷。The ice storage refrigeration device includes an ammonia absorption ice making unit, a conveyor belt, an ice storage tank and an ice storage refrigeration unit. The ammonia absorption ice making unit absorbs low-pressure steam (the remaining steam after the lithium bromide unit is used) to make ice, and the ice produced is sent to the storage tank through the conveyor belt. In the ice tank, when necessary, the ice storage refrigeration unit is turned on to provide cooling for the user.
本发明的提供了一种综合能源利用系统，其采用清洁的天然气作为燃料，同时采用太阳能这种新能源作为补充，能够有效减少燃料成本；在发电的同时实现制冷和制热，以满足用户冷、热、电三种用能需求，发电系统采用天然气发电和蒸汽发电，制热是余热利用，制冷则根据蒸汽量的实际情况选择不同的方案。该系统实现了蒸汽利用最大化，极大地提高了系统综合能源利用率。The present invention provides a comprehensive energy utilization system, which uses clean natural gas as fuel, and at the same time uses solar energy as a supplement, which can effectively reduce fuel costs; realize cooling and heating while generating electricity, so as to meet the needs of users. The power generation system adopts natural gas power generation and steam power generation, heating uses waste heat, and cooling uses different schemes according to the actual situation of steam volume. The system maximizes the utilization of steam and greatly improves the comprehensive energy utilization rate of the system.
以上仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，应视为本发明的保护范围。The above are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.
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