WO2017020767A1 - Multi-stage plate-type evaporation absorption cooling device and method - Google Patents

Multi-stage plate-type evaporation absorption cooling device and method Download PDF

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WO2017020767A1
WO2017020767A1 PCT/CN2016/091993 CN2016091993W WO2017020767A1 WO 2017020767 A1 WO2017020767 A1 WO 2017020767A1 CN 2016091993 W CN2016091993 W CN 2016091993W WO 2017020767 A1 WO2017020767 A1 WO 2017020767A1
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outlet
heat exchanger
inlet
pipe
cold
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PCT/CN2016/091993
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French (fr)
Chinese (zh)
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周轶松
周鼎
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上海缔森能源技术有限公司
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B15/00Sorption machines, plant, or systems, operating continuously, e.g. absorption type
    • F25B15/02Sorption machines, plant, or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06Sorption machines, plant, or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B15/00Sorption machines, plant, or systems, operating continuously, e.g. absorption type
    • F25B15/008Sorption machines, plant, or systems, operating continuously, e.g. absorption type with multi-stage operation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B25/00Machines, plant, or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/02Compression-sorption machines, plants, or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B27/00Machines, plant, or systems, using particular sources of energy
    • F25B27/002Machines, plant, or systems, using particular sources of energy using solar energy
    • F25B27/007Machines, plant, or systems, using particular sources of energy using solar energy in sorption type systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B27/00Machines, plant, or systems, using particular sources of energy
    • F25B27/02Machines, plant, or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/04Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
    • F25B43/046Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases for sorption type systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/04Arrangement or mounting of control or safety devices for sorption type machines, plant or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2315/00Sorption refrigeration cycles or details thereof
    • F25B2315/001Crystallization prevention
    • 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
    • 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

Abstract

A multi-stage plate-type evaporation absorption cooling device includes components such as a coolant water evaporator (21), a low pressure absorber (22), a four-way solution heat exchanger (10), a steam mixing tank (1), a first plate-type inner coupling phase-change heat exchanger (2), a second plate-type inner coupling phase-change heat exchanger (4), a third plate-type inner coupling phase-change heat exchanger (6), a first flash separating tank (3), a second flash separating tank (5), a third flash separating tank (7), a mechanical steam compression pump (11) and a condensation water liquid level meter (20). Dilute solution is continuously evaporated and concentrated by a plate-type evaporation unit formed of three plate-type inner coupling phase-change heat exchangers (2, 4, 6), and the condensation latent heat of the coolant water steam produced in the dilute solution evaporation process is fully recovered and used to generate regenerated steam, which is recompressed by the mechanical steam compression pump (11) to increase the pressure and temperature and used as a heat source.

Description

一种多级板式蒸发吸收式制冷装置和方法Multi-stage plate type evaporation absorption refrigeration device and method [技术领域][Technical field]
本发明涉及余热回收装置和方法,具体涉及一种多级板式蒸发吸收式制冷装置和方法。The invention relates to a waste heat recovery device and method, and in particular to a multi-stage plate type evaporation absorption refrigeration device and method.
[背景技术][Background technique]
传统的吸收式制冷方法已经有近百年的生产历史,采用基本定型的热力学过程和设备;在实际使用中,用得最多的是用于空调的溴化锂吸收式制冷循环和用于制冷、空调的氨吸收式制冷循环。近几十年由于受“蒙特利尔协议”规定的影响,减少氟碳化物的使用,以及利用余热作为驱动热源对减少碳排放具有的意义,吸收式制冷方法得到了较大的推广和发展,例如中国专利CN200510060377.7“多能源驱动的溴化锂制冷空调机”专利中,利用了太阳能、微波和燃油(气)多种能源,日本专利2009-236440“Gas heat pup type air conditioning device or refrigerating device”和2009-236441“Heat pup type refrigerating device”开发了用气体发动机废热作为空调、制冷机热源的吸收式制冷方法。此种制冷方法多应用于低温余热的利用。但这些改进都不能提高吸收式制冷循环本身的能效比。最新的GB 29540-2013《溴化锂吸收式冷水机组能效限定值及能效等级》标准中确定双效溴化锂吸收式制机组的COP为1.12~1.4,而双效溴化锂制冷机的输入热源蒸汽为150℃甚至更高温度,而氨-水吸收式制机组冷COP仅在0.3~0.4。由于蒸汽机械压缩热泵具有能用很小的机械功提升低温余热蒸汽的显热,变为高温蒸汽就可回收其潜热,作为高温热源利用,因此在热能系统中受到重视,在中国专利CN201010198705.0“通过热泵提取电厂 余热加热冷凝水系统”;中国专利CN20101063699.5“热电联产耦合热泵实现区域冷热联供系统及方法”;中国专利CN200910223748.7“低温余热发电系统乏汽冷凝过程自耦冷源热泵循环装置”;中国专利CN201010163688.7“电厂循环水热泵耦合热电联产的集中供暖系统及方法”都涉及了利用低温热源,包括水和蒸汽,通过热泵机组提高整个热电联产的发电供热系统的能效比;但都没有涉及到利用蒸汽机械压缩热泵应用于制冷、空调循环中的问题,以提高制冷机组本身的能效比问题。The traditional absorption refrigeration method has a history of nearly one hundred years of production, using basic stereotyped thermodynamic processes and equipment; in practical use, the most used is the lithium bromide absorption refrigeration cycle for air conditioners and ammonia for refrigeration and air conditioning. Absorption refrigeration cycle. In recent decades, due to the influence of the Montreal Protocol, the use of fluorocarbons has been reduced, and the use of waste heat as a driving heat source has been used to reduce carbon emissions. The absorption refrigeration method has been greatly promoted and developed, such as China. Patent CN200510060377.7 "Multi-energy-driven lithium bromide refrigeration air conditioner" patent, using solar energy, microwave and fuel (gas) multiple energy sources, Japanese patent 2009-236440 "Gas heat pup type air conditioning device or refrigerating device" and 2009 -236441 "Heat pup type refrigerating device" has developed an absorption refrigeration method using gas engine waste heat as an air conditioner and a refrigerator heat source. This type of refrigeration method is mostly used in the utilization of low temperature waste heat. However, these improvements do not improve the energy efficiency ratio of the absorption refrigeration cycle itself. The latest GB 29540-2013 "Lithium bromide absorption chiller energy efficiency limit value and energy efficiency rating" standard determines that the COP of the double-effect lithium bromide absorption unit is 1.12 to 1.4, while the input heat source steam of the double-effect lithium bromide refrigerator is 150 °C or even Higher temperatures, while the ammonia-water absorption unit has a cold COP of only 0.3 to 0.4. Since the steam mechanical compression heat pump has the sensible heat of low-temperature waste heat steam with a small mechanical work, it can recover its latent heat as a high-temperature steam, and is utilized as a high-temperature heat source, so it is valued in the thermal energy system, in Chinese patent CN201010198705.0 "Extracting power plants by heat pump Waste heat heating condensate system"; Chinese patent CN20101063699.5 "Cogeneration coupled heat pump to achieve regional cold and heat supply system and method"; Chinese patent CN200910223748.7 "low temperature waste heat power generation system steam condensing process auto-coupling cold source heat pump circulation device "China's patent CN201010163688.7 "Centralized heating systems and methods for power plant circulating water heat pump coupling cogeneration" all involve the use of low temperature heat sources, including water and steam, to improve the energy efficiency of the entire cogeneration heat and power generation system through heat pump units. However, none of them involves the use of steam mechanical compression heat pumps for refrigeration and air conditioning cycles to improve the energy efficiency ratio of the refrigeration unit itself.
吸收式制冷方法的能效比低的其中一基本原因是在高压发生器冷剂水进行浓缩时吸热生成的制冷剂蒸汽需要吸收大量的热能,而制冷剂蒸汽所含的热量在冷凝过程中释放出相变热被排放到系统外,得不到回收利用;而制冷剂在低压蒸发器中吸收冷媒循环水的低温热能进而生成低温低压冷剂蒸汽,该冷剂蒸汽进入吸收器又有汽相转变为液相,相变所释放的热量,通常也被排放到制冷系统外,也没有得到回收利用。在CN201020188184.6“双效第二类溴化锂吸收式热泵机组”中只是开发了一种供热的热泵机组,没有解决上述循环中排放热的回用。在CN200820115165.3“一种冷热双向同时利用的单效型第三种吸收式热泵”,因为利用了一部分的排放热,用于供热,可以同时供冷和供热,COP可达2.2~2.6。但因为并不是重新回用于系统,减少驱动制冷系统能量输入,所以不能根本上解决排放热的回用问题。也没有解决低能效比的问题,因此制冷和采暖的能效比,仍都很低。One of the basic reasons for the low energy efficiency of the absorption refrigeration method is that the refrigerant vapor generated by the absorption of the high pressure generator coolant water needs to absorb a large amount of heat energy, and the heat contained in the refrigerant vapor is released during the condensation process. The phase change heat is discharged outside the system and cannot be recycled; and the refrigerant absorbs the low temperature heat energy of the refrigerant circulating water in the low pressure evaporator to generate low temperature low pressure refrigerant vapor, and the refrigerant vapor enters the absorber and has a vapor phase. In the liquid phase, the heat released by the phase change is usually discharged outside the refrigeration system and is not recycled. In the CN201020188184.6 "double-effect second-type lithium bromide absorption heat pump unit", only one heat pump unit for heating is developed, which does not solve the reuse of the heat of discharge in the above cycle. In CN200820115165.3 "a single-effect type third absorption heat pump that is used simultaneously in both hot and cold directions", because part of the exhaust heat is used for heating, it can supply both cooling and heating, and the COP can reach 2.2~. 2.6. However, because it is not reused in the system and reduces the energy input of the driving refrigeration system, the problem of reuse of the exhaust heat cannot be fundamentally solved. There is also no solution to the problem of low energy efficiency, so the energy efficiency ratio of refrigeration and heating is still very low.
吸收式制冷、空调循环造价高的重要原因是,传统上多采用管壳式换热设备和喷淋传质方法,传热、传质系数低,换热面积大,还需要循环泵,反复喷淋吸收溶液和制冷剂,而在中国专利CN200480010361.9“带外部回路的吸收器和热交换器以及包括该吸收器或热交换器的热泵系统和空调系统”用板式换热 器作为吸收器或冷凝器,以提高换热效率,包括美国专利US6176101 B1“FLAT-PLATE ABSORBERS AND EVAPORATORS FOR ABSORPTION COOLERS”则将冷凝器和吸收器组装在一个板式换热器中,这种设备为回收冷凝热提供了可能,但该专利没有为解决吸收式制冷方法的能效比提高和降低系统造价提出解决方案。The important reason for the high cost of absorption refrigeration and air conditioning cycle is that traditionally, shell-and-tube heat exchange equipment and spray mass transfer methods are used, heat transfer, mass transfer coefficient is low, heat exchange area is large, and circulating pump is required. Leaching absorption solution and refrigerant, and plate heat exchange in Chinese patent CN200480010361.9 "Absorber and heat exchanger with external circuit and heat pump system and air conditioning system including the same or heat exchanger" As an absorber or condenser to improve heat exchange efficiency, including US Patent No. 6,176,101 B1 "FLAT-PLATE ABSORBERS AND EVAPORATORS FOR ABSORPTION COOLERS", the condenser and absorber are assembled in a plate heat exchanger, the device is It is possible to recover the heat of condensation, but the patent does not propose a solution to improve the energy efficiency ratio of the absorption refrigeration method and reduce the system cost.
[发明内容][Summary of the Invention]
本发明的目的在于提高多级板式蒸发吸收式制冷装置的能效比。It is an object of the present invention to improve the energy efficiency ratio of a multi-stage plate type evaporative absorption refrigerating apparatus.
为了实现上述目的,发明一种多级板式蒸发吸收式制冷装置,包括:In order to achieve the above object, a multi-stage plate type evaporative absorption refrigerating apparatus comprising:
冷剂水蒸发器,包括进口,Coolant water evaporator, including inlets,
吸收器,包括出口和进口,Absorbers, including outlets and inlets,
其特征在于还包括以下设备:It is also characterized by the following equipment:
四路溶液换热器,包括两个冷侧通路:第一和第二冷侧通路,以及一个热侧通路,第一冷侧通路的进口与吸收器的出口通过管道连接,热侧通路的出口与吸收器的进口通过管道连接,第二冷测通路与生活水管道连接,第一冷侧通路的出口为两个:第一冷侧通路的第一出口和第一冷侧通路的第二出口,A four-way solution heat exchanger comprising two cold side passages: first and second cold side passages, and a hot side passage, the inlet of the first cold side passage and the outlet of the absorber being connected by a pipe, and the outlet of the hot side passage The inlet of the absorber is connected by a pipe, the second cold measuring path is connected to the domestic water pipe, and the outlets of the first cold side passage are two: a first outlet of the first cold side passage and a second outlet of the first cold side passage ,
蒸汽混合器,具有生蒸汽进口、再生蒸汽进口,以及出口,生蒸汽进口与生蒸汽管道连接;a steam mixer having a raw steam inlet, a regenerated steam inlet, and an outlet, the raw steam inlet being connected to the raw steam pipeline;
第一相变换热器,其热侧进口通过管道与蒸汽混合器出口连接,冷侧进口与四路溶液换热器的第一冷侧通路的第一出口通过管道连接, The first phase change heat exchanger has a hot side inlet connected to the steam mixer outlet through a pipe, and a cold side inlet and a first outlet of the first cold side passage of the four way solution heat exchanger are connected by a pipe.
第四板式换热器,热侧进口与第一相变换热器的热侧出口通过管道连接,冷侧进口与生活水管道连接,The fourth plate heat exchanger has a hot side inlet connected to the hot side outlet of the first phase change heat exchanger through a pipe, and a cold side inlet connected to the domestic water pipe.
第一闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第一相变换热器的冷侧出口通过管道连接,a first flash vapor separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the first phase change heat exchanger through a pipe,
第二相变换热器,其热侧进口通过管道与第一闪蒸汽液分离器的气相出口连接,其冷侧进口通过管道与四路溶液换热器的第一冷测通路的第二出口连接,The second phase change heat exchanger has a hot side inlet connected to the gas phase outlet of the first flash liquid separator through a pipe, and a cold side inlet through the pipe and a second outlet of the first cold test path of the four-way solution heat exchanger connection,
第二闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第二相变换热器的冷侧出口通过管道连接;其液相出口与第一闪蒸汽液分离器出口通过管道合并后接入四路溶液换热器的热侧进口连接,a second flash vapor separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the second phase change heat exchanger through a pipe; the liquid phase outlet and the first flash vapor separator The outlet is merged through the pipeline and connected to the hot side inlet connection of the four-way solution heat exchanger.
第三相变换热器,其热侧进口与第二闪蒸汽液分离器的气相出口通过管道连接,其冷侧进口通过管道与第四板式换热器的热侧出口通过管道连接,其热侧出口与第二相变换热器的热侧出口通过管道合并后与冷剂水蒸发器的进口通过管道连接,The third phase change heat exchanger has a hot side inlet connected to the gas phase outlet of the second flash steam separator through a pipe, and a cold side inlet connected to the hot side outlet of the fourth plate heat exchanger through a pipe through a pipe, the heat thereof The side outlet and the hot side outlet of the second phase change heat exchanger are combined by a pipe and connected to the inlet of the refrigerant water evaporator through a pipe.
凝结水液位控制器,具有出口、进口和排水口,其出口通过管道与第四板式换热器与第三相变换热器之间连接的管道相通;a condensate level controller having an outlet, an inlet, and a drain, the outlet of which is in communication with a conduit connected between the fourth plate heat exchanger and the third phase change heat exchanger;
第三闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第三相变换热器的冷侧出口通过管道连接,液相出口与凝结水液位控制器的进口通过管道连接;a third flash steam separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the third phase change heat exchanger through a pipe, the liquid phase outlet and the inlet of the condensate water level controller Connected by pipe;
机械蒸汽压缩泵,其进口与第三闪蒸汽液分离器的气相出口通过管道连接,其出口通过管道与蒸汽混合器的再生蒸汽进口通过管道连接。 The mechanical vapor compression pump has an inlet connected to the gas phase outlet of the third flash steam separator through a pipe, and an outlet connected to the steam inlet of the steam mixer through a pipe through a pipe.
该设备还具有如下优化结构:The device also has the following optimized structure:
所述的机械蒸汽压缩泵具有自动测定饱和度的补水箱。The mechanical vapor compression pump has a water supply tank that automatically measures saturation.
所述的第一、第二、第三相变换热器为板式换热器、板式蒸发器、板式冷凝器或管壳式换热器。The first, second, and third phase change heat exchangers are plate heat exchangers, plate evaporators, plate condensers, or shell-and-tube heat exchangers.
所述的机械蒸汽压缩泵为单级或多级风机及压缩泵的组合,其结构形式为罗茨式、离心式、往复式或螺杆式。The mechanical vapor compression pump is a combination of a single-stage or multi-stage fan and a compression pump, and is in the form of a Roots type, a centrifugal type, a reciprocating type or a screw type.
本发明还包括一种多级板式蒸发吸收式制冷装置的制冷方法:The invention also includes a refrigeration method for a multi-stage plate type evaporative absorption refrigeration device:
来自吸收器的稀溶液进入四路溶液换热器与浓缩液换热后分别进入所述的第一和第二相变换热器:The dilute solution from the absorber enters the four-way solution heat exchanger and exchanges the concentrated liquid into the first and second phase change heaters respectively:
来自吸收器的一部分稀溶液进入第一相变换热器进行换热,换热后的冷剂水进入第一闪蒸汽液分离罐分离成气相的冷剂水蒸汽和液相的浓缩液,A part of the dilute solution from the absorber enters the first phase change heat exchanger for heat exchange, and the heat exchanged cold water enters the first flash liquid liquid separation tank and is separated into a vapor phase of the refrigerant water vapor and the liquid phase concentrate.
来自吸收器的另一部稀溶液进入第二相变换热器与来自第一闪蒸汽液分离罐的冷剂水蒸汽进行换热,换热后的稀溶液进入第二闪蒸汽液分离罐分离成气相的冷剂水蒸汽和液相的浓缩液,Another dilute solution from the absorber enters the second phase change heat exchanger to exchange heat with the refrigerant water vapor from the first flash vapor separation tank, and the dilute solution after the heat exchange enters the second flash vapor separation tank. a vapor phase of a refrigerant vapor and a liquid phase concentrate,
另一路冷水以及来自吸收罐的冷剂水通过四路溶液换热器吸收来自第一和第二闪蒸汽液分离罐的冷剂水浓缩液的余热产生热水。The other cold water and the refrigerant water from the absorption tank absorb the waste heat of the refrigerant water concentrate from the first and second flash steam separation tanks through the four-way solution heat exchanger to generate hot water.
上述工艺还具有如下优化方案:The above process also has the following optimization scheme:
在第一相变换热器中换热过的蒸汽混合气进入第三相变换热器吸收来自第二闪蒸汽液分离罐的冷剂水蒸汽相变热后,进入第三闪蒸汽液分离罐,气相的 蒸汽混合气进入机械蒸汽压缩泵生成再生蒸汽,与生蒸汽在蒸汽混合罐中进行混合,产生蒸汽混合气进入第一相变换热器中与所述的稀溶液换热。The vapor mixed gas exchanged in the first phase change heat exchanger enters the third phase change heat device to absorb the phase change heat of the refrigerant water vapor from the second flash steam separation tank, and then enters the third flash vapor separation Tank, gas phase The steam mixture enters the mechanical vapor compression pump to generate regeneration steam, which is mixed with the raw steam in the steam mixing tank to generate a steam mixture into the first phase change heat exchanger to exchange heat with the dilute solution.
经过第二和第三相变换热器换热后的冷剂水蒸汽凝液进入吸收器,并被冷媒水冷却。The refrigerant water vapor condensate after heat exchange between the second and third phase change heat exchangers enters the absorber and is cooled by the refrigerant water.
本发明提出了对溴化锂吸收式制冷的最优化设计,使机组可具有超高能效比,COP可达5.5~6。The invention proposes an optimized design of lithium bromide absorption refrigeration, so that the unit can have an ultra-high energy efficiency ratio, and the COP can reach 5.5-6.
本发明将热源蒸汽凝结水和浓溶液余热通过板式换热器回收,制成生活热水输出使用。The invention recovers the heat source steam condensed water and the residual heat of the concentrated solution through the plate heat exchanger to be used for the output of domestic hot water.
本发明对各种制冷剂和吸收剂对沸点相差很小的情况,还提出了一种精馏型带蒸汽相变热回收单元组件的吸收式制冷、空调和热泵采暖循环的构思。例如氨-水吸收式制冷机组。In the invention, the difference between the boiling points of various refrigerants and absorbents is small, and the concept of the absorption refrigeration, air conditioning and heat pump heating cycle of the rectification type steam phase change heat recovery unit assembly is also proposed. For example, ammonia-water absorption refrigeration units.
[附图说明][Description of the Drawings]
图1为实施例的设备结构流程图;1 is a flow chart showing the structure of an apparatus of an embodiment;
图中1.蒸汽混合罐 2.第一板式内耦合相变换热器 3.第一闪蒸分离罐 4.第二板式内耦合相变换热器 5.第二闪蒸分离罐 6.第三板式内耦合相变换热器 7.第三闪蒸分离罐 8.自动补水箱 9.真空泵 10.四路溶液换热器 11.机械蒸汽压缩泵 12.板式换热器 13.生蒸汽进口 14.生活水进出口 15.生活水进出口 16冷媒水进出口 17冷却水进出口 20.凝结水液位器 21冷剂水蒸发器 22低压吸收器 C.补水入口1. Steam mixing tank 2. First plate internal coupling phase change heat exchanger 3. First flash separation tank 4. Second plate internal coupling phase change heat exchanger 5. Second flash separation tank 6. Three-plate internal coupling phase change heat exchanger 7. Third flash separation tank 8. Automatic water supply tank 9. Vacuum pump 10. Four-way solution heat exchanger 11. Mechanical vapor compression pump 12. Plate heat exchanger 13. Raw steam inlet 14. Import and export of domestic water 15. Import and export of domestic water 16 Import and export of refrigerant water 17 Import and export of cooling water 20. Condensate liquid level device 21 refrigerant water evaporator 22 low pressure absorber C. hydration inlet
[具体实施方式] [detailed description]
以下,结合实施例和附图对于本发明做进一步说明,实施例和附图仅用于解释说明而不用于限定本发明的保护范围。The invention is further described in the following with reference to the embodiments and the accompanying drawings, which are intended to illustrate and not to limit the scope of the invention.
一、如图1所示,本实施例中的装置如下:1. As shown in FIG. 1, the device in this embodiment is as follows:
如图1所示:As shown in Figure 1:
冷剂水蒸发器,包括进口,Coolant water evaporator, including inlets,
吸收器,包括出口和进口,Absorbers, including outlets and inlets,
四路溶液换热器,包括两个冷侧通路:第一和第二冷侧通路,以及一个热侧通路,第一冷侧通路的进口与吸收器的出口通过管道连接,热侧通路的出口与吸收器的进口通过管道连接,第二冷测通路与生活水管道连接,第一冷侧通路的出口为两个:第一冷侧通路的第一出口和第一冷侧通路的第二出口,A four-way solution heat exchanger comprising two cold side passages: first and second cold side passages, and a hot side passage, the inlet of the first cold side passage and the outlet of the absorber being connected by a pipe, and the outlet of the hot side passage The inlet of the absorber is connected by a pipe, the second cold measuring path is connected to the domestic water pipe, and the outlets of the first cold side passage are two: a first outlet of the first cold side passage and a second outlet of the first cold side passage ,
蒸汽混合器,具有生蒸汽进口、再生蒸汽进口,以及出口,生蒸汽进口与生蒸汽管道连接;a steam mixer having a raw steam inlet, a regenerated steam inlet, and an outlet, the raw steam inlet being connected to the raw steam pipeline;
第一相变换热器,其热侧进口通过管道与蒸汽混合器出口连接,冷侧进口与四路溶液换热器的第一冷侧通路的第一出口通过管道连接,The first phase change heat exchanger has a hot side inlet connected to the steam mixer outlet through a pipe, and a cold side inlet and a first outlet of the first cold side passage of the four way solution heat exchanger are connected by a pipe.
第四板式换热器,热侧进口与第一相变换热器的热侧出口通过管道连接,冷侧进口与生活水管道连接,The fourth plate heat exchanger has a hot side inlet connected to the hot side outlet of the first phase change heat exchanger through a pipe, and a cold side inlet connected to the domestic water pipe.
第一闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第一相变换热器的冷侧出口通过管道连接,a first flash vapor separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the first phase change heat exchanger through a pipe,
第二相变换热器,其热侧进口通过管道与第一闪蒸汽液分离器的气相出口 连接,其冷侧进口通过管道与四路溶液换热器的第一冷测通路的第二出口连接,a second phase change heat exchanger having a hot side inlet passing through the conduit and a vapor phase outlet of the first flash vapor separator Connecting, the cold side inlet is connected to the second outlet of the first cold measuring passage of the four-way solution heat exchanger through a pipe,
第二闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第二相变换热器的冷侧出口通过管道连接;其液相出口与第一闪蒸汽液分离器出口通过管道合并后接入四路溶液换热器的热侧进口连接,a second flash vapor separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the second phase change heat exchanger through a pipe; the liquid phase outlet and the first flash vapor separator The outlet is merged through the pipeline and connected to the hot side inlet connection of the four-way solution heat exchanger.
第三相变换热器,其热侧进口与第二闪蒸汽液分离器的气相出口通过管道连接,其冷侧进口通过管道与第四板式换热器的热侧出口通过管道连接,其热侧出口与第二相变换热器的热侧出口通过管道合并后与冷剂水蒸发器的进口通过管道连接,The third phase change heat exchanger has a hot side inlet connected to the gas phase outlet of the second flash steam separator through a pipe, and a cold side inlet connected to the hot side outlet of the fourth plate heat exchanger through a pipe through a pipe, the heat thereof The side outlet and the hot side outlet of the second phase change heat exchanger are combined by a pipe and connected to the inlet of the refrigerant water evaporator through a pipe.
上述的第一、第二、第三相变换热器可以采用板式内耦合相变换热器,也可以采用其他常规的如板式换热器、板式蒸发器、板式冷凝器或管壳式换热器等类型的换热器。The above-mentioned first, second, and third phase change heat exchangers may use a plate type internal coupling phase change heat exchanger, or other conventional such as plate heat exchanger, plate evaporator, plate condenser or shell-and-tube type change. Heat exchangers of the type such as heaters.
凝结水液位控制器,具有出口、进口和排水口,其出口通过管道与第四板式换热器与第三相变换热器之间连接的管道相通;a condensate level controller having an outlet, an inlet, and a drain, the outlet of which is in communication with a conduit connected between the fourth plate heat exchanger and the third phase change heat exchanger;
第三闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第三相变换热器的冷侧出口通过管道连接,液相出口与凝结水液位控制器的进口通过管道连接;a third flash steam separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the third phase change heat exchanger through a pipe, the liquid phase outlet and the inlet of the condensate water level controller Connected by pipe;
机械蒸汽压缩泵,其进口与第三闪蒸汽液分离器的气相出口通过管道连接,其出口通过管道与蒸汽混合器的再生蒸汽进口通过管道连接,机械蒸汽压缩泵具有自动测定饱和度的补水箱,其可以采用常规的蒸汽压缩本,是单级或多级风机及压缩泵的组合,其结构形式可以为罗茨式、离心式、往复式或螺杆式。 The mechanical vapor compression pump has an inlet connected to the gas phase outlet of the third flash liquid separator through a pipeline, and an outlet thereof is connected through a pipeline to a regeneration steam inlet of the steam mixer, and the mechanical vapor compression pump has a water supply tank for automatically determining saturation. It can be a conventional steam compression book, and is a combination of a single-stage or multi-stage fan and a compression pump, and the structure can be a Roots type, a centrifugal type, a reciprocating type or a screw type.
本实施例中的原热源是生蒸汽和再生蒸汽的混合物,当然也可以是蒸汽或热水;吸收器中上部具有冷媒管道,图中16为冷媒工质进出口;吸收器的下部具有冷却水管道,图中17为冷却水进出口;C为补水进口。在此机组中采用了包括由蒸汽机械压缩机内热泵11和三组板式内耦合相变换热器2、4、6和与换热器配组的三组闪蒸汽液分离罐3、5、7;前两组组合组主要对冷剂水稀溶液进行加热蒸发完成冷剂水稀溶液的浓缩及生成冷剂水蒸汽;第三组组成了制冷剂蒸汽相变热回收并使之生成再生蒸汽;这三组由板式内耦合相变换热器和闪蒸汽液分离罐组成的系统工作处于真空状态,保持真空度和维持较高的换热效能需配有真空泵组9与其联通,真空泵抽取不凝气体及预置系统真空状态;每组均有与之对应的绝对压值。由第三组板式内耦合相变换热器6、闪蒸汽液分离罐7生成的再生蒸汽(较低位能)进入机械蒸汽压缩泵11,经机械蒸汽压缩泵11闭热增压输出生成高一级位能的饱和蒸汽,经由管道进入蒸汽混合罐1与生蒸汽13混合。进入第一板式内耦合相变换热器2的热源蒸汽与板式内耦合相变换热器内另一侧冷剂水稀溶液换热后凝结为凝结水自管道进入板式换热器12热侧与进入器内另一侧的生活用水换热,升温后的生活热水输出供用户使用,而冷却后的凝结水经由凝结水循环泵输入第三板式内耦合相变换热器6。凝结水在板式内耦合相变换热器和闪蒸汽液分离罐6、8汽化为再生蒸汽。自低压发生器流出的冷剂水稀溶液经由循环泵压入四路板式换热器10,冷剂水稀溶液进入四路板式换热器器内后分配为两路,一路与浓溶液间接换热升温后出换热器后进入第一板式内耦合相变换热器2,另一路在器内调整温度后出换热器进入第二板式内耦合相变换热器4;冷剂水稀溶液进入第一板式内耦合相变换热器2生成汽液混合态进入闪蒸汽液分离罐3分离为汽相和液相,液相即为浓缩溶液,而汽相为二次饱和蒸汽作为下一级的热源进入第二级板式内耦合相变换热器4和第 二闪蒸汽液分离罐5;第二板式内耦合相变换热器4热侧入口为上一级的生成的二次蒸汽(冷剂水蒸汽)与冷侧冷剂水换热后凝结为冷剂水自第二板式内耦合相变换热器4出,经由U管进入蒸发器;第二板式内耦合相变换热器4的另一(冷)侧是来自四路溶液换热器10的冷剂水在器内与热侧的冷剂水蒸汽换热生成汽液混合态进入第二闪蒸汽液分离罐5,第二闪蒸汽液分离罐5分离的液相为浓溶液自下部输返回入四路溶液换热器10,汽相为冷剂水蒸汽自上部出,进入下一级第三级板式内耦合相变换热器6的热侧作为热源;第三级板式内耦合相变换热器6热侧冷剂水蒸汽与冷侧的凝结水换热后相变为冷剂水自第三级板式内耦合相变换热器6的下部出,经过U形管进入蒸发器21;在第三级板式内耦合相变换热器6冷侧的循环凝结在吸收热侧能量后进入汽液分离器7汽化,除去液滴生成较低位能的饱和蒸汽(称为再生蒸汽);汽液分离器7出来的再生蒸汽进入机械蒸汽压缩泵11,经机械蒸汽压缩泵11闭热增压升温生成高一级位能的再生蒸汽,该再生蒸汽就是进入蒸汽混合罐1、第一板式内耦合相变换热器2的主热源。四路溶液换热器10接受来自闪蒸汽液分离罐3、第二闪蒸汽液分离罐5的较高温度浓溶液其一部分热能与另一侧较低温度的冷剂水稀溶液换热以提高冷剂水稀溶液的温度,而另一部分的热能则加热另一侧冷的生活用水。既有四路溶液换热器10分别有生活水进出,有冷剂水稀溶液一进二出,和浓溶液进出,浓溶液也因此经由四路溶液换热器10降温至设定温度进入吸收器22。The original heat source in this embodiment is a mixture of raw steam and regenerated steam, of course, steam or hot water; the upper part of the absorber has a refrigerant pipe, 16 is a refrigerant medium inlet and outlet; the lower part of the absorber has cooling water. Pipe, 17 in the figure is the inlet and outlet of cooling water; C is the inlet of hydration. In this unit, three sets of flash vapor separation tanks 3, 5 including a steam mechanical compressor internal heat pump 11 and three sets of plate type internal coupling phase change heat exchangers 2, 4, 6 and a heat exchanger are used. 7; The first two groups of groups mainly heat and evaporate the dilute solution of the refrigerant to complete the concentration of the dilute solution of the refrigerant and generate the refrigerant water vapor; the third group constitutes the heat recovery of the refrigerant vapor phase change and generates regeneration steam. These three groups of systems consisting of a plate-type internal coupling phase change heat exchanger and a flash vapor separation tank are in a vacuum state. The vacuum degree and the high heat exchange efficiency are required to be connected with the vacuum pump unit 9 and the vacuum pump is not pumped. Condensed gas and preset system vacuum state; each group has an absolute pressure corresponding to it. The regenerative steam (lower potential energy) generated by the third group of plate type inner coupled phase change heat exchangers 6 and flash vapor separation tanks 7 enters the mechanical vapor compression pump 11, and the mechanical vapor compression pump 11 closes the heat boost output to generate high. The saturated steam of the first-order energy is mixed into the steam mixing tank 1 and the raw steam 13 via a pipe. The heat source steam entering the first plate type internal coupling phase change heat exchanger 2 and the plate side inner coupling phase change heat exchanger are exchanged with the other side refrigerant water dilute solution, and then condensed into condensed water from the pipe into the hot side of the plate heat exchanger 12 The heat exchange with the domestic water on the other side of the inlet is performed, and the heated domestic hot water is output for the user to use, and the cooled condensed water is input to the third plate type internal coupled phase change heat exchanger 6 via the condensate circulation pump. The condensed water is vaporized into regenerated steam in the in-plate coupled phase change heat exchanger and flash vapor separation tanks 6, 8. The dilute solution of the refrigerant water flowing out from the low-pressure generator is pressed into the four-plate heat exchanger 10 through the circulation pump, and the dilute solution of the cold water enters the four-plate heat exchanger and is distributed into two paths, and one way is exchanged indirectly with the concentrated solution. After the heat is raised, the heat exchanger enters the first plate type internal coupling phase change heat exchanger 2, and the other circuit adjusts the temperature inside the device, and then the heat exchanger enters the second plate type internal coupling phase change heat device 4; the refrigerant water thin The solution enters the first plate type internal coupling phase change heat exchanger 2 to generate a vapor-liquid mixed state into the flash vapor liquid separation tank 3 and is separated into a vapor phase and a liquid phase, the liquid phase is a concentrated solution, and the vapor phase is a secondary saturated steam as a lower The first stage heat source enters the second stage plate type internal coupling phase change heat exchanger 4 and The second flash type vapor liquid separation tank 5; the second plate type internal coupling phase change heat exchanger 4 is formed by the upper side of the secondary steam (coolant water vapor) and the cold side coolant water is condensed into cold after heat exchange The agent water is discharged from the second plate inner coupling phase change heat exchanger 4 and enters the evaporator via the U tube; the other (cold) side of the second plate inner coupling phase change heat exchanger 4 is from the four-way solution heat exchanger 10 The refrigerant water exchanges with the hot side water vapor in the device to form a vapor-liquid mixed state into the second flash liquid separation tank 5, and the second flash liquid separation tank 5 separates the liquid phase into a concentrated solution from the lower portion. Returning to the four-way solution heat exchanger 10, the vapor phase is the refrigerant water vapor from the upper part, and enters the hot side of the next-stage third-stage plate type internal coupling phase change heat exchanger 6 as a heat source; the third-stage plate type internal coupling phase The hot water refrigerant of the heat exchanger 6 exchanges heat with the condensed water on the cold side, and then changes into refrigerant water from the lower part of the third-stage plate type coupling phase change heat exchanger 6, and enters the evaporator through the U-shaped tube. 21; in the third-stage plate type, the circulating condensation of the cold side of the phase change heat exchanger 6 is vaporized by the vapor-liquid separator 7 after absorbing the heat side energy, and the droplet is removed. The lower-level saturated steam (referred to as regenerated steam); the regenerated steam from the vapor-liquid separator 7 enters the mechanical vapor compression pump 11, and is heated by the mechanical vapor compression pump 11 to generate a higher-order energy regeneration. The steam, which is the main heat source entering the steam mixing tank 1, the first plate type inner phase coupled phase heat exchanger 2. The four-way solution heat exchanger 10 receives a higher temperature concentrated solution from the flash vapor separation tank 3 and the second flash vapor separation tank 5, and exchanges a part of the heat energy with the lower temperature refrigerant solution of the other side to improve The temperature of the cold water solution of the refrigerant, while the heat of the other part heats the cold domestic water of the other side. The existing four-way solution heat exchanger 10 has domestic water in and out, a dilute solution of the cold water, one in and two out, and a concentrated solution in and out, and the concentrated solution is thus cooled to a set temperature into the absorption through the four-way solution heat exchanger 10. Device 22.
冷剂水进入低压蒸发器21,低压蒸发器21的绝压只有0.00087pa,冷剂水在此低压状态下以5℃左右温度汽化,满足汽化条件时需要同时吸收冷媒循环水中等量的能量,因而冷媒水也因此温度降至接近汽化温度。吸收器22中的冷剂蒸汽进入具有相同真空度的吸收器22,吸收器22中的较高浓度的溴化锂溶液具有强烈的吸收水蒸气的能力,浓溶液充分吸收了冷气蒸汽后稀释为冷剂水被冷 剂水循环泵泵出进入14,为了满足和增进吸收效能,吸收器22还配有冷剂水喷淋循环泵,吸收器22也配置有冷剂水循环泵,以保证冷剂水的蒸发效果。在吸收器22运行的同时将吸入冷剂水蒸汽的相变热,故吸收器配有列管式冷却器,外部冷却水通过冷却器带走冷剂水蒸汽凝结热冷却了溶液。The refrigerant water enters the low-pressure evaporator 21, and the absolute pressure of the low-pressure evaporator 21 is only 0.00087pa. The refrigerant water vaporizes at a temperature of about 5 ° C under the low pressure state, and needs to simultaneously absorb the same amount of energy in the refrigerant circulating water when the vaporization condition is satisfied. Therefore, the refrigerant water is thus cooled to a temperature close to the vaporization temperature. The refrigerant vapor in the absorber 22 enters the absorber 22 having the same degree of vacuum. The higher concentration lithium bromide solution in the absorber 22 has a strong ability to absorb water vapor, and the concentrated solution sufficiently absorbs the cold air vapor and is diluted into a cold agent. Water is cold The agent water circulation pump is pumped into the inlet 14. In order to meet and improve the absorption efficiency, the absorber 22 is also equipped with a refrigerant water spray circulation pump, and the absorber 22 is also provided with a refrigerant water circulation pump to ensure the evaporation effect of the coolant water. While the absorber 22 is operating, the phase in which the refrigerant water vapor is sucked is heated, so that the absorber is equipped with a tube-and-tube cooler, and the external cooling water is carried away by the cooler to remove the coolant water vapor to condense the heat to cool the solution.
本发明的工艺路程保留了传统的蒸发型吸收式制冷机组的低压桶式的蒸发器和吸收器装置,保留原工艺过程的相关配置,如:冷剂水泵、冷剂水喷淋泵、冷剂水循环泵、真空不凝性气体排放系统、及相关的原有配置。这样的设计路线有利于对已有吸收式制冷机组的升级改造;有利于本专业或相似专业技术人员的的理解,便于本发明的普及及推广。 The process route of the invention retains the low pressure barrel type evaporator and absorber device of the conventional evaporation type absorption refrigeration unit, and retains the relevant configuration of the original process, such as: refrigerant water pump, refrigerant water spray pump, refrigerant Water circulation pump, vacuum non-condensable gas discharge system, and related original configuration. Such a design route is advantageous for upgrading the existing absorption refrigeration unit; facilitating the understanding of the professional or similar professional technicians, and facilitating the popularization and promotion of the present invention.

Claims (7)

  1. 一种多级板式蒸发吸收式制冷装置,其特征在于包括:A multi-stage plate type evaporative absorption refrigerating device, comprising:
    冷剂水蒸发器,包括进口,Coolant water evaporator, including inlets,
    吸收器,包括出口和进口,Absorbers, including outlets and inlets,
    其特征在于还包括以下设备:It is also characterized by the following equipment:
    四路溶液换热器,包括两个冷侧通路:第一和第二冷侧通路,以及一个热侧通路,第一冷侧通路的进口与吸收器的出口通过管道连接,热侧通路的出口与吸收器的进口通过管道连接,第二冷测通路与生活水管道连接,第一冷侧通路的出口为两个:第一冷侧通路的第一出口和第一冷侧通路的第二出口,蒸汽混合器,具有生蒸汽进口、再生蒸汽进口,以及出口,生蒸汽进口与生蒸汽管道连接;A four-way solution heat exchanger comprising two cold side passages: first and second cold side passages, and a hot side passage, the inlet of the first cold side passage and the outlet of the absorber being connected by a pipe, and the outlet of the hot side passage The inlet of the absorber is connected by a pipe, the second cold measuring path is connected to the domestic water pipe, and the outlets of the first cold side passage are two: a first outlet of the first cold side passage and a second outlet of the first cold side passage a steam mixer having a raw steam inlet, a regenerative steam inlet, and an outlet, the raw steam inlet being connected to the raw steam pipeline;
    第一相变换热器,其热侧进口通过管道与蒸汽混合器出口连接,冷侧进口与四路溶液换热器的第一冷侧通路的第一出口通过管道连接,The first phase change heat exchanger has a hot side inlet connected to the steam mixer outlet through a pipe, and a cold side inlet and a first outlet of the first cold side passage of the four way solution heat exchanger are connected by a pipe.
    第四板式换热器,热侧进口与第一相变换热器的热侧出口通过管道连接,冷侧进口与生活水管道连接,The fourth plate heat exchanger has a hot side inlet connected to the hot side outlet of the first phase change heat exchanger through a pipe, and a cold side inlet connected to the domestic water pipe.
    第一闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第一相变换热器的冷侧出口通过管道连接,a first flash vapor separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the first phase change heat exchanger through a pipe,
    第二相变换热器,其热侧进口通过管道与第一闪蒸汽液分离器的气相出口连接,其冷侧进口通过管道与四路溶液换热器的第一冷测通路的第二出口连接,The second phase change heat exchanger has a hot side inlet connected to the gas phase outlet of the first flash liquid separator through a pipe, and a cold side inlet through the pipe and a second outlet of the first cold test path of the four-way solution heat exchanger connection,
    第二闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第二相变换热器的冷侧出口通过管道连接;其液相出口与第一闪蒸汽液分离器出口通过管道合并后接入四路溶液换热器的热侧进口连接,a second flash vapor separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the second phase change heat exchanger through a pipe; the liquid phase outlet and the first flash vapor separator The outlet is merged through the pipeline and connected to the hot side inlet connection of the four-way solution heat exchanger.
    第三相变换热器,其热侧进口与第二闪蒸汽液分离器的气相出口通过管道连 接,其冷侧进口通过管道与第四板式换热器的热侧出口通过管道连接,其热侧出口与第二相变换热器的热侧出口通过管道合并后与冷剂水蒸发器的进口通过管道连接,a third phase change heat exchanger having a hot side inlet connected to a gas phase outlet of the second flash liquid separator through a pipe Connected, the cold side inlet is connected to the hot side outlet of the fourth plate heat exchanger through a pipe through a pipe, and the hot side outlet and the hot side outlet of the second phase change heat exchanger are combined by the pipe and the refrigerant water evaporator The imports are connected by pipes,
    凝结水液位控制器,具有出口、进口和排水口,其出口通过管道与第四板式换热器与第三相变换热器之间连接的管道相通;a condensate level controller having an outlet, an inlet, and a drain, the outlet of which is in communication with a conduit connected between the fourth plate heat exchanger and the third phase change heat exchanger;
    第三闪蒸汽液分离器,具有进口,顶部气相出口和底部液相出口,其进口与第三相变换热器的冷侧出口通过管道连接,液相出口与凝结水液位控制器的进口通过管道连接;a third flash steam separator having an inlet, a top gas phase outlet and a bottom liquid phase outlet, the inlet of which is connected to the cold side outlet of the third phase change heat exchanger through a pipe, the liquid phase outlet and the inlet of the condensate water level controller Connected by pipe;
    机械蒸汽压缩泵,其进口与第三闪蒸汽液分离器的气相出口通过管道连接,其出口通过管道与蒸汽混合器的再生蒸汽进口通过管道连接。The mechanical vapor compression pump has an inlet connected to the gas phase outlet of the third flash steam separator through a pipe, and an outlet connected to the steam inlet of the steam mixer through a pipe through a pipe.
  2. 如权利要求1所述的多级板式蒸发吸收式制冷装置,其特征在于所述的机械蒸汽压缩泵具有自动测定饱和度的补水箱。A multi-stage plate type evaporative absorption refrigerating apparatus according to claim 1, wherein said mechanical vapor compression pump has a water supply tank for automatically measuring saturation.
  3. 如权利要求1所述的多级板式蒸发吸收式制冷装置,其特征在于所述的第一、第二、第三相变换热器为板式换热器、板式蒸发器、板式冷凝器或管壳式换热器。A multi-stage plate type evaporative absorption refrigerating apparatus according to claim 1, wherein said first, second, and third phase change heat exchangers are plate heat exchangers, plate evaporators, plate condensers or tubes. Shell heat exchanger.
  4. 如权利要求1所述的多级板式蒸发吸收式制冷装置,其特征在于所述的机械蒸汽压缩泵为单级或多级风机及压缩泵的组合,其结构形式为罗茨式、离心式、往复式或螺杆式。A multi-stage plate type evaporative absorption refrigerating apparatus according to claim 1, wherein said mechanical vapor compression pump is a combination of a single-stage or multi-stage fan and a compression pump, and the structure is a Roots type, a centrifugal type, Reciprocating or screw type.
  5. 一种权利要求1所述的多级板式蒸发吸收式制冷装置的制冷方法,其特征在于:A method of cooling a multi-stage plate type evaporative absorption refrigerating apparatus according to claim 1, wherein:
    来自吸收器的稀溶液进入四路溶液换热器与浓缩液换热后分别进入所述的第一和第二相变换热器:The dilute solution from the absorber enters the four-way solution heat exchanger and exchanges the concentrated liquid into the first and second phase change heaters respectively:
    来自吸收器的一部分稀溶液进入第一相变换热器进行换热,换热后的冷剂水 进入第一闪蒸汽液分离罐分离成气相的冷剂水蒸汽和液相的浓缩液,A part of the dilute solution from the absorber enters the first phase change heat exchanger for heat exchange, and the refrigerant water after heat exchange Entering the first flash liquid separation tank to separate the refrigerant water vapor and the liquid phase concentrate into a gas phase,
    来自吸收器的另一部稀溶液进入第二相变换热器与来自第一闪蒸汽液分离罐的冷剂水蒸汽进行换热,换热后的稀溶液进入第二闪蒸汽液分离罐分离成气相的冷剂水蒸汽和液相的浓缩液,Another dilute solution from the absorber enters the second phase change heat exchanger to exchange heat with the refrigerant water vapor from the first flash vapor separation tank, and the dilute solution after the heat exchange enters the second flash vapor separation tank. a vapor phase of a refrigerant vapor and a liquid phase concentrate,
    另一路冷水以及来自吸收罐的冷剂水通过四路溶液换热器吸收来自第一和第二闪蒸汽液分离罐的冷剂水浓缩液的余热产生热水。The other cold water and the refrigerant water from the absorption tank absorb the waste heat of the refrigerant water concentrate from the first and second flash steam separation tanks through the four-way solution heat exchanger to generate hot water.
  6. 如权利要求5所述的余热回收方法,其特征在于在第一相变换热器中换热过的蒸汽混合气进入第三相变换热器吸收来自第二闪蒸汽液分离罐的冷剂水蒸汽相变热后,进入第三闪蒸汽液分离罐,气相的蒸汽混合气进入机械蒸汽压缩泵生成再生蒸汽,与生蒸汽在蒸汽混合罐中进行混合,产生蒸汽混合气进入第一相变换热器中与所述的稀溶液换热。A waste heat recovery method according to claim 5, wherein the vapor mixed gas exchanged in the first phase change heat exchanger enters the third phase change heatr to absorb the refrigerant from the second flash vapor separation tank. After the water vapor phase heats up, it enters the third flash steam separation tank, and the vapor mixture of the gas phase enters the mechanical vapor compression pump to generate regeneration steam, which is mixed with the raw steam in the steam mixing tank to generate the steam mixture into the first phase change. The heat exchanger exchanges heat with the dilute solution.
  7. 如权利要求5所述的余热回收方法,其特征在于经过第二和第三相变换热器换热后的冷剂水蒸汽凝液进入吸收器,并被冷媒水冷却。 The waste heat recovery method according to claim 5, wherein the refrigerant water vapor condensate after heat exchange between the second and third phase change heat exchangers enters the absorber and is cooled by the refrigerant water.
PCT/CN2016/091993 2015-07-31 2016-07-28 Multi-stage plate-type evaporation absorption cooling device and method WO2017020767A1 (en)

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