CN114087030A - Double-air-cooler fast-assembling ORC generator set suitable for double heat sources - Google Patents

Double-air-cooler fast-assembling ORC generator set suitable for double heat sources Download PDF

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Publication number
CN114087030A
CN114087030A CN202111363514.XA CN202111363514A CN114087030A CN 114087030 A CN114087030 A CN 114087030A CN 202111363514 A CN202111363514 A CN 202111363514A CN 114087030 A CN114087030 A CN 114087030A
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heat source
air cooler
temperature evaporator
orc
input end
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CN202111363514.XA
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Chinese (zh)
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侯昊
任沁新
周瑞华
张航
胡磊
郑帅
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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
    • 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
    • F01K13/00—General layout or general methods of operation of complete plants
    • 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
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • 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
    • F03G6/003—Devices for producing mechanical power from solar energy having a Rankine cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
    • F22B3/02—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass involving the use of working media other than water
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention discloses a double-air-cooler fast-assembly ORC generator set suitable for double heat sources, which comprises a modular box body, and a first heat source input end, a second heat source input end, a first heat source output end, a second heat source output end, a low-temperature evaporator, a high-temperature evaporator, an organic working medium loop pipeline, an expander, a generator, an organic working medium pump, a first air cooler and a second air cooler which are fixedly arranged in the modular box body; promote the suitability and the generating capacity of ORC electricity generation through two heat source inputs, avoid taking place the cooling water scaling problem through two air cooler heat dissipations, realize being convenient for transport through the modularization box, be convenient for assemble, a plurality of electricity generation module installations of being convenient for, the effect of installing fast can be accomplished, each part and connecting tube are all inside the modularization box, have the firm and stable advantage of connection of installation, especially the joint position has received fine protection, therefore the leakproofness is splendid, organic working medium is difficult for leaking, so can adopt the more efficient organic working medium relatively.

Description

Double-air-cooler fast-assembling type ORC generator set suitable for double heat sources
Technical Field
The invention relates to the field of organic Rankine cycle power generation, in particular to a double-air-cooler fast-assembly ORC generator set suitable for double heat sources.
Background
In an Organic Rankine Cycle (ORC), "O" represents an Organic working fluid, "R" represents the inventor "Rankine", and "C" represents the Cycle "; the prior art uses high-temperature and good-use energy, and the high-temperature and good-use energy has high energy conversion efficiency and good economical efficiency, but the environmental protection is more and more emphasized at present, and the carbon neutralization and carbon peak reaching are more and more emphasized at present, so that the utilization rate of fossil fuel is improved, and the organic Rankine cycle power generation is also an important requirement.
With the development of the technology, the organic rankine cycle power generation technology is increasing, for example, chinese patent CN208749417U discloses a dual-heat source organic rankine cycle power generation system, which includes a liquid pump, a first preheater, a second preheater, an evaporator, an expander, a generator, and a condenser; the low-temperature low-pressure liquid refrigerant respectively enters a first preheater and a second preheater after being boosted by a liquid pump; the first preheater and the second preheater are respectively connected with an evaporator, the evaporator is connected with an expander, and the gasified superheated gas is conveyed to the expander to be expanded to do work so as to drive a generator to generate electricity; one end of a heat exchange pipeline of the evaporator is used as a first hot fluid inlet, the other end of the heat exchange pipeline is connected with an inlet of a second preheating pipeline, and an outlet of the second preheating pipeline outputs first hot fluid; one end of the first preheating pipeline is used as a second hot fluid inlet, and the other end of the first preheating pipeline outputs the second hot fluid subjected to heat exchange. The power generation system can be used for geothermal and waste heat power generation, and can improve the power generation efficiency of low-level thermal fluid on occasions with double thermal fluids.
However, the existing organic Rankine cycle power generation systems have the problems of complicated installation, troublesome transportation and difficult assembly, and when a plurality of organic Rankine cycle power generation systems are needed, the installation is troublesome, and the organic Rankine cycle power generation systems have the problems of inconvenient overall installation due to overlarge structures.
Accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
The invention provides a double-air-cooler fast-assembly ORC generator set suitable for double heat sources, which aims to solve the technical problems that: the method is suitable for improving the adaptability of the temperature range of a heat source, avoiding the scaling influence of condensed water, facilitating transportation, assembly, installation of a plurality of power generation modules and the like.
The technical scheme of the invention is as follows:
a double-air-cooler fast-assembly ORC generator set suitable for double heat sources comprises an organic Rankine cycle power generation module;
the organic Rankine cycle power generation module comprises a modular box body, and a first heat source input end, a second heat source input end, a first heat source output end, a second heat source output end, a low-temperature evaporator, a high-temperature evaporator, an organic working medium loop pipeline, an expander, a power generator, an organic working medium pump, a first air cooler and a second air cooler which are fixedly arranged in the modular box body;
the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end are respectively fixed on the inner side of the side part of the modular box body, and the surfaces of the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end do not protrude out of the side part;
the first air cooler and the second air cooler are fixed on the inner side of the top of the modular box body, and the surfaces of the first air cooler and the second air cooler are parallel to the top;
the first heat source input end is communicated with the first heat source output end through the low-temperature evaporator, and the second heat source input end is communicated with the second heat source output end through the high-temperature evaporator;
the organic working medium loop pipeline is partially arranged inside the low-temperature evaporator and partially arranged inside the high-temperature evaporator, and is also sequentially communicated with the expander, the first air cooler, the second air cooler and the organic working medium pump;
the expander is connected with the generator.
Preferably, the ORC generator set or the organic Rankine cycle power generation module further comprises a solar power generation module fixedly arranged on the inner side of the top of the modular box body, and the surface of the solar power generation module is level with the top; or the organic Rankine cycle power generation module further comprises a solar water heater fixedly arranged on the inner side of the top of the modular box body, and the solar water heater is communicated with the first heat source input end to serve as a first heat source.
Preferably, the organic working medium loop pipeline includes a main pipeline, a first branch pipeline and a second branch pipeline, the first branch pipeline is partially arranged inside the low-temperature evaporator, and both ends of the first branch pipeline are communicated with the main pipeline through a first group of synchronous valves, the second branch pipeline is partially arranged inside the high-temperature evaporator, and both ends of the second branch pipeline are communicated with the main pipeline through a second group of synchronous valves, and the main pipeline is further communicated with the expander, the first air cooler, the second air cooler and the organic working medium pump in sequence.
Preferably, the first group of synchronizing valves and the second group of synchronizing valves are mutually exclusive or independently communicated.
Preferably, the second heat source output end is communicated with the first heat source input end; or the ORC generator set further comprises a switching valve fixedly arranged in the modular box body, and the second heat source output end is communicated with the first heat source input end or the organic working medium loop pipeline through the switching valve.
Preferably, the ORC generator set further comprises a switching valve fixedly provided in the modular cabinet, and the second heat source input terminal communicates the low-temperature evaporator and the high-temperature evaporator in sequence through the switching valve for a predetermined first heat source.
Preferably, the air outlets of the first air cooler and the second air cooler are respectively arranged on different side parts of the modular box body; or the expander is a turbine expander; or the organic working medium of the organic Rankine cycle power generation module is R245fa, n-pentane or cyclohexane.
Preferably, the ORC generator set comprises at least three organic rankine cycle power generation modules arranged regularly.
Preferably, two ends or two sides of the organic rankine cycle power generation modules are further provided with interlocking cascade devices, and two adjacent organic rankine cycle power generation modules are fixedly connected with each other through the interlocking cascade devices.
Preferably, the modularized box body is a container, a hoisting position is arranged at the top of the modularized box body, or a pulley block is arranged at the bottom of the modularized box body.
By adopting the scheme, the applicability and the power generation capacity of ORC power generation are improved through double heat source input, the problem of cooling water scaling is avoided through double air cooler heat dissipation, the modular box body is convenient to transport, assemble and install a plurality of power generation modules, and the effect of quick installation can be achieved.
Drawings
FIG. 1 is a schematic external view of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a regular arrangement according to a first embodiment of the present invention;
FIG. 3 is a schematic structural connection diagram of a second embodiment of the present invention;
FIG. 4 is a schematic external view of a third embodiment of the present invention;
FIG. 5 is a schematic diagram of an organic working fluid circuit according to a third embodiment of the present invention;
FIG. 6 is a schematic view of another organic working fluid circuit according to a third embodiment of the present invention;
FIG. 7 is a schematic external view of a fourth embodiment of the present invention;
FIG. 8 is a schematic external view of a fifth embodiment of the present invention;
FIG. 9 is a schematic view of a structural connection of a sixth embodiment of the present invention;
FIG. 10 is a schematic structural connection diagram of a seventh embodiment of the present invention;
fig. 11 is a schematic structural connection diagram of a seventh embodiment of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
One embodiment of the invention is a double air cooler fast-assembling type ORC generator set suitable for double heat sources, which comprises an organic Rankine cycle power generation module; the organic Rankine cycle power generation module comprises a modular box body, and a first heat source input end, a second heat source input end, a first heat source output end, a second heat source output end, a low-temperature evaporator, a high-temperature evaporator, an organic working medium loop pipeline, an expander, a power generator, an organic working medium pump, a first air cooler and a second air cooler which are fixedly arranged in the modular box body; the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end are respectively fixed on the inner side of the side part of the modular box body, and the surfaces of the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end do not protrude out of the side part; the first air cooler and the second air cooler are fixed on the inner side of the top of the modular box body, and the surfaces of the first air cooler and the second air cooler are parallel to the top; the first heat source input end is communicated with the first heat source output end through the low-temperature evaporator, and the second heat source input end is communicated with the second heat source output end through the high-temperature evaporator; the organic working medium loop pipeline is partially arranged inside the low-temperature evaporator and partially arranged inside the high-temperature evaporator, and is also sequentially communicated with the expander, the first air cooler, the second air cooler and the organic working medium pump; the expander is connected with the generator. By adopting the scheme, the applicability and the power generation capacity of ORC power generation are improved through double heat source input, the problem of cooling water scaling is avoided through double air cooler heat dissipation, the modular box body is convenient to transport, assemble and install a plurality of power generation modules, and the effect of quick installation can be achieved.
The double-air-cooler fast-assembly ORC generator set suitable for double heat sources can be called as a double-air-cooler fast-assembly ORC generator set for short, can also be called as an ORC generator set for short, and comprises an organic Rankine cycle power generation module; preferably, the ORC generator set further comprises a wind power module, a light energy power generation module and/or a grid-connected module; the wind power module, the light energy power generation module and/or the organic Rankine cycle power generation module are/is connected into a transmission line network through the grid-connected module. Preferably, the light energy power generation module is a solar power generation module. Preferably, the ORC generator set further comprises a solar power generation module fixedly arranged on the inner side of the top of the modular box body, and the surface of the solar power generation module is flush with the top. This is also to make a unitary modular case that is easy to stack.
Preferably, the ORC generator set further comprises an energy storage system, the energy storage system is respectively connected with the wind power module, the light energy power generation module and/or the organic rankine cycle power generation module, and the energy storage system is incorporated into a transmission network through the grid-connected module. The energy storage system includes, but is not limited to, an electrochemical energy storage system including a battery pack, and a hydraulic energy storage system including a hydraulic energy storage power plant. The method has the advantages that the grid connection is stable, and the impact is avoided; the investment is large, and the method is suitable for being used in remote barren places; the hydraulic power storage power station is also matched with the natural environment.
Preferably, the organic Rankine cycle power generation module comprises a modular box body, and a first heat source input end, a second heat source input end, a first heat source output end, a second heat source output end, a low-temperature evaporator, a high-temperature evaporator, an organic working medium loop pipeline, an expander, a power generator, an organic working medium pump, a first air cooler and a second air cooler which are fixedly arranged in the modular box body; preferably, the modularized box body is a container, a hoisting position is arranged at the top of the modularized box body, or a pulley block is arranged at the bottom of the modularized box body. Preferably, the inside of the modular box body is provided with an installation beam column structure, and the first heat source input end, the second heat source input end, the first heat source output end, the second heat source output end, the low-temperature evaporator, the high-temperature evaporator, the organic working medium loop pipeline, the expander, the generator, the organic working medium pump, the first air cooler and the second air cooler are respectively fixed on the installation beam column structure. Preferably, the modular containers are containers with windows and doors, or when two adjacent modular containers are locked and fixed to each other by an interlocking structure or fixedly connected by an interlocking cascade device, a container with windows and doors is formed together, for example, one of the two adjacent modular containers has a window and the other has a door; at least one of the first heat source input end and the second heat source input end is a hot water input end, at least one of the first heat source output end and the second heat source output end is correspondingly provided with a water outlet and a control valve thereof, the organic Rankine cycle power generation module further comprises energy storage equipment connected with the generator and an energy supply output device thereof, and the energy storage equipment and the energy supply output device thereof are fixedly arranged in the modular box body. The adoption of the modularized box body is an important invention creation direction of the invention, and the design of the container is used for reference, so that the container is convenient to transport and install; the stability and the heat preservation of the whole organic Rankine cycle power generation module are improved. The hoisting position can be conveniently assembled and stacked with the modular box body, and the pulley block can be conveniently moved and adjusted with the position of the modular box body. The container with window and door parts is convenient for maintenance. The energy storage equipment and the energy supply output device thereof are matched with the water outlet and the control valve thereof, so that a shelter or a temporary rest space can be provided under special conditions, and electric power and warm water are provided, the energy storage equipment and the energy supply output device thereof are an innovative design across fields, an applicant considers a large number of ORC generator sets installed in a severe environment and researches the requirements of a power supply environment and a front line worker, and the improved design is provided to enhance humanized service and support.
Preferably, the ORC generator set comprises at least three organic rankine cycle power generation modules arranged regularly. Preferably, at least three organic rankine cycle power generation modules are regularly arranged in one row, two rows or more. Preferably, two ends or two sides of the organic Rankine cycle power generation modules are further provided with interlocking cascade devices, and two adjacent organic Rankine cycle power generation modules are fixedly connected with each other through the interlocking cascade devices. Preferably, the modular box body is provided with an extending position, the interlocking cascading devices are telescopically arranged relative to the extending position, the interlocking cascading devices retract into the modular box body when not in use so as to facilitate transportation and stacking of the modular box body, and the interlocking cascading devices extend out of the extending position when in use so as to mutually fix adjacent interlocking cascading devices, so that two adjacent organic Rankine cycle power generation modules are mutually and fixedly connected. Preferably, the modular box body is provided with a telescopic rod and a locking piece, the interlocking cascading devices are arranged in the modular box body through the telescopic rod, and the locking piece is used for locking the interlocking cascading devices on the modular box body when the interlocking cascading devices extend out from the extending positions and are fixedly connected with other interlocking cascading devices. Therefore, the organic Rankine cycle power generation modules can be quickly positioned and installed, and the organic Rankine cycle power generation module is particularly suitable for heating water and generating power at multiple underground places simultaneously. Compared with other existing ORC generator sets or organic Rankine cycle power generation modules thereof, the organic Rankine cycle power generation module and the modular box thereof can reduce the volume by 60% -80%, namely 20% -40%; the first heat source input end and/or the second heat source input end of the plurality of regularly arranged organic Rankine cycle power generation modules can divide the input of the first heat source and the second heat source, so that the size of the evaporator and the heat exchanger thereof is greatly reduced, namely the contact area between the heat exchanger and the heat source is reduced, and the container type stacking mode cannot be achieved by other existing ORC generator sets or organic Rankine cycle power generation modules thereof.
On the other hand, a container type modular box body needs more flat installation positions, but in development, some environments, such as machine rooms or geothermal resource utilization, need more miniaturized modular box bodies, and preferably, the modular box body is provided with an inner assembling structure and an outer assembling structure, the inner assembling structure comprises a first accommodating space and an interlocking structure, the first accommodating space is positioned in a first side part of the modular box body, the interlocking structure is partially positioned in the first accommodating space, and partially protrudes out of the first side part and extends into a first accommodating space of another modular box body to be mutually locked and fixed with the interlocking structure of the other modular box body, so that the two modular box bodies are mutually fixed; the outer assembling structure comprises a second accommodating space and an interlocking cascade device, the second accommodating space is positioned in a second side part of the modular box body, the interlocking cascade device is positioned in the second accommodating space, the interlocking cascade device is rotatably arranged on the second side part and extends out of the second side part when rotating to a preset position so as to be fixedly connected with the interlocking cascade device of another modular box body; and, the first side portion and the second side portion are disposed adjacent to each other. Preferably, two of said modular housings are assembled together to form one said container or are received in one said container for transport. Preferably, two adjacent modular boxes share a bottom plate, and the bottom of the bottom plate is provided with a pulley block. Preferably, one of said modular housings is provided with a base plate, and the other of said modular housings is removably mounted to said base plate. Preferably, said base is adapted to said container for loading two of said modular housings through said container at a time. Therefore, the miniaturized multifunctional ORC generator set can be assembled in a container, also can be assembled into a container, also can be assembled with two modular boxes from front to back, and also can be assembled with two modular boxes from left to right, so that the integral installation and fixation are facilitated, and meanwhile, the miniaturized multifunctional ORC generator set can adapt to some narrow installation environments. When the product is manufactured in a trial mode, the noise can be controlled below 74 decibels, and the emission of carbon dioxide can be reduced by more than 500 tons every year according to the machine loading amount of 100 kW.
Preferably, the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end are respectively fixed at the inner side of the side portion of the modular box body, and the surfaces of the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end do not protrude from the side portion; i.e. inside the side or even with the surface of the modular cabinet; the first air cooler and the second air cooler are fixed on the inner side of the top of the modular box body, and the surfaces of the first air cooler and the second air cooler are parallel to the top; preferably, the air outlets of the first air cooler and the second air cooler are respectively arranged on different side parts of the modular box body. Preferably, two adjacent modular boxes share two air coolers, that is, only two air coolers, namely the first air cooler and the second air cooler, are arranged in the two adjacent modular boxes; in order to facilitate the design of saving accessories, it is found in research that when a modular box body is small, for example, when two modular box bodies are loaded in one container, a predetermined condensation effect can be achieved by sharing an air cooler, only the first air cooler and the second air cooler are respectively arranged at adjacent positions on the two modular box bodies, and at this time, a little adjustment needs to be made on an organic working medium loop pipeline, and a section of organic working medium loop pipeline protruding out of the modular box body where the first air cooler and the second air cooler are arranged is added to enable the organic working medium loop pipeline to penetrate through the air cooler of the adjacent modular box body. That is to say, the organic working medium loop pipelines of two adjacent modularized boxes are not communicated with each other. Preferably, the modularization box is in first heat source input the second heat source input first heat source output the second heat source output first air cooler with the second air cooler still is equipped with can dismantle the backplate, and this is for the design of the ease of transportation, and the backplate can be dismantled in the cooperation, can pile up or place a plurality of modularization boxes side by side, and can not touch inner structure, consequently is convenient for transport, is convenient for assemble, is convenient for a plurality of electricity generation module installations, can accomplish the effect of quick installation. The air outlets are arranged on different side parts, so that air outlet is not interfered with each other, and the air condensation effect is convenient to improve.
Preferably, the first heat source input end and the first heat source output end are communicated through the low-temperature evaporator, and the second heat source input end and the second heat source output end are communicated through the high-temperature evaporator; preferably, the second heat source output end is communicated with the first heat source input end; or the ORC generator set further comprises a switching valve fixedly arranged in the modular box body, and the second heat source output end is communicated with the first heat source input end or the organic working medium loop pipeline through the switching valve. Preferably, the switching valve includes a flow meter and an electronic valve, and the electronic valve cuts off the second heat source output end and the first heat source input end when the flow is judged to be greater than the threshold value according to the flow meter, so that the second heat source output end and the first heat source input end are not communicated, the utilization rate of the second heat source is improved, and the power generation efficiency is improved; and the electronic valve conducts the second heat source output end and the first heat source input end when judging that the flow is not greater than the threshold value according to the flowmeter so as to improve the utilization amount of the second heat source and avoid wasting the second heat source. That is, the low temperature evaporator and the high temperature evaporator may not be communicated with each other, or may be sequentially communicated with each other. This is primarily based on the needs. From the viewpoint of energy utilization efficiency, even if the hot water flows out from the second heat source output end of the high-temperature evaporator, the temperature of the hot water also meets the requirement of the low-temperature evaporator, and the hot water can flow into the low-temperature evaporator again for reuse. The switching valve is a good design scheme, and for high-temperature hot water with large quantity, the low-temperature evaporator and the high-temperature evaporator can be not communicated with each other, so that high-temperature hot water can be utilized as soon as possible, and the power generation efficiency is improved; and for the low-temperature heat water, the second heat source output end is communicated with the first heat source input end, and the organic working medium is vaporized by continuously utilizing the low-temperature evaporator to drive the generator to generate electricity through the expander.
Preferably, the ORC generator set further comprises a switching valve fixedly provided in the modular cabinet, and the second heat source input terminal communicates the low-temperature evaporator and the high-temperature evaporator in sequence through the switching valve for a predetermined first heat source. That is, for the non-predetermined first heat source, the second heat source input end is communicated with the high temperature evaporator through the switching valve. In contrast to the previous embodiment, this embodiment gives another implementation, only for a predetermined first heat source, the second heat source input end sequentially communicates the low-temperature evaporator and the high-temperature evaporator through the switching valve; those skilled in the art may generally misunderstand that for a predetermined second heat source, the second heat source input communicates the low temperature evaporator and the high temperature evaporator sequentially through the switching valve; however, in the present invention, when the temperature of the predetermined first heat source, for example, low-temperature hot water is lower than the temperature of the hot water outputted from the second heat source output terminal of the high-temperature evaporator, the second heat source input terminal sequentially communicates the low-temperature evaporator and the high-temperature evaporator through the switching valve, so that the second heat source output terminal is also outputted to the low-temperature evaporator, and may be directly outputted to the low-temperature evaporator, or may be indirectly outputted to the low-temperature evaporator through the first heat source input terminal, thereby increasing the amount of use of the second heat source.
Preferably, the organic working medium loop pipeline is partially arranged inside the low-temperature evaporator and partially arranged inside the high-temperature evaporator, and the expander, the first air cooler, the second air cooler and the organic working medium pump are sequentially communicated with the organic working medium loop pipeline; preferably, the organic working medium of the organic Rankine cycle power generation module is R245fa, n-pentane or cyclohexane. The ORC generator set has a plurality of application scenes, can be arranged in a factory, can also be arranged in a place with a heat source such as a plateau, a grassland or a volcano, and the like, and is realized by converting the heat source into hot water generally due to the limitation of a low-temperature evaporator and a high-temperature evaporator. The organic Rankine cycle power generation module can try to adopt various high-efficiency high-risk organic working media, which is an important invention and creation point of the invention, the organic Rankine cycle is similar to the reverse Carnot cycle applied by the air conditioning technology, and can be simply understood as being performed against the reverse Carnot cycle, and in most cases, the organic working media are greatly limited due to the safety requirement, especially the indoor air conditioner, and the flammable and explosive organic working media are almost completely eliminated; however, the present invention can be used in this way, that is, flammable and explosive organic working mediums are not afraid, not only because the ORC generator set is generally installed in a remote place, but also the sealing performance and the installation stability are optimized by matching with the modular box, so that the expansion coefficient of the expander is greatly improved, that is, the power generation efficiency is improved, which is not possible by most other existing ORC generator sets.
Preferably, the expander is connected to the generator. Preferably, the expander is a turbine expander, and a screw expander is used instead, but the volume and the effect are influenced to some extent. Preferably, the generator is incorporated into an external power grid or the like via a transmission line. The expander is considered as the heart of the ORC generator set, and the invention has no special innovation on the expander, and mainly selects the proper expander which stably operates.
The temperature of the industrial wastewater is higher, the industrial wastewater can be used as a second heat source and is input into the high-temperature evaporator through the input end of the second heat source, the industrial wastewater is subjected to heat exchange through the heat exchanger in the high-temperature evaporator, organic working media in the organic working medium loop pipeline in the high-temperature evaporator are evaporated and gasified, also can be called as vaporization, then the water temperature is reduced, the industrial wastewater flows out from the output end of the second heat source as low-temperature water, and the organic working medium steam drives the expander to apply work to the generator to generate power.
Compared with industrial wastewater, the geothermal water is lower in temperature, can be used as a first heat source and is input into the low-temperature evaporator through the first heat source input end, the low-temperature water after the industrial wastewater passes through the high-temperature evaporator can also be used as the first heat source and is input into the low-temperature evaporator through the first heat source input end, then the low-temperature water is subjected to heat exchange through a heat exchanger in the low-temperature evaporator, organic working media in the organic working medium loop pipeline in the low-temperature evaporator are evaporated and gasified, then the water temperature is reduced and flows out from the first heat source output end as low-temperature water, and the organic working medium steam drives the expander to apply work to the generator to generate electricity.
Preferably, the organic rankine cycle power generation module further comprises a solar water heater fixedly arranged on the inner side of the top of the modular box body, and the solar water heater is communicated with the first heat source input end to serve as a first heat source. Namely, the solar water obtained by the solar water heater is used as a first heat source. The solar water heater can also be provided with a water tank, and the ORC generator set mainly utilizes the existing solar water heater and/or solar power generation module.
Compared with solar hot water, the geothermal water is higher in temperature, and can be used as a second heat source to be input into the high-temperature evaporator through the second heat source input end. That is, high temperature and low temperature are relative.
The first and second heat sources are not limited thereto, and may be other heat sources, but are preferably realized by a medium for exchanging heat inside the evaporator. The medium of the first and second heat sources is typically water, and the present design of the ORC generator set of the invention uses only water, and not others. That is, the first heat source input end and the second heat source input end are respectively used for inputting water with different temperatures, and the temperature of the water input by the first heat source input end is lower than that of the water input by the second heat source input end.
Through the above description and comparison, it can be seen that the functions of the high-temperature evaporator and the low-temperature evaporator make the ORC generator set suitable for dual heat sources, and the applicability of the present invention is improved.
Preferably, the organic working medium loop pipeline includes a main pipeline, a first branch pipeline and a second branch pipeline, the first branch pipeline is partially arranged inside the low-temperature evaporator, and both ends of the first branch pipeline are communicated with the main pipeline through a first group of synchronous valves, the second branch pipeline is partially arranged inside the high-temperature evaporator, and both ends of the second branch pipeline are communicated with the main pipeline through a second group of synchronous valves, and the main pipeline is further communicated with the expander, the first air cooler, the second air cooler and the organic working medium pump in sequence. Preferably, the first group of synchronizing valves and the second group of synchronizing valves are mutually exclusive or independently communicated. The two groups of synchronous valves of the embodiment mainly realize simultaneous opening and simultaneous closing, so that only one low-temperature evaporator or only one high-temperature evaporator can be selected to be opened, and the low-temperature evaporator and the high-temperature evaporator can also be used simultaneously.
Preferably, the organic rankine cycle power generation module of the ORC generator set is shown in fig. 1, and includes a modular box 900, and a first heat source input end 101, a first heat source output end 102, a second heat source input end 201, a second heat source output end 202, a low-temperature evaporator, a high-temperature evaporator, an organic working medium loop pipeline, an expander, a generator, an organic working medium pump, a first air cooler 700, and a second air cooler 800 which are fixedly arranged in the modular box 900; the surfaces of the first heat source input 101, first heat source output 102, second heat source input 201, and second heat source output 202 do not protrude out of the sides of the modular box 900; the surfaces of the first and second air coolers 700 and 800 are level with the top of the modular cabinet 900. Preferably, the top of the modular cabinet 900 is provided with two grooves, and the first air cooler 700 and the second air cooler 800 are respectively located in the two grooves.
Preferably, two organic rankine cycle power generation modules in the ORC generator set are regularly arranged as shown in fig. 2, and in other embodiments, a plurality of organic rankine cycle power generation modules are regularly arranged in one row, two rows or three rows.
Preferably, the organic rankine cycle power generation module of the ORC generator set is structurally connected as shown in fig. 3, wherein the first heat source input end 101 and the first heat source output end 102 are respectively connected with the low-temperature evaporator 100 to be communicated through the low-temperature evaporator 100, and the second heat source input end 201 and the second heat source output end 202 are respectively connected with the high-temperature evaporator 200 to be communicated through the high-temperature evaporator 200; the organic working medium loop pipeline 300 is partially arranged inside the low-temperature evaporator 100 and partially arranged inside the high-temperature evaporator 200, and the organic working medium loop pipeline 300 is further sequentially communicated with the expander 400, the first air cooler 700, the second air cooler 800 and the organic working medium pump 600; the expander 400 is connected to a generator for driving the generator 500 to generate electricity.
Preferably, as shown in fig. 4, another embodiment is additionally provided with a gate valve 301 compared with the embodiment shown in fig. 3, and the organic working medium pump 600 controls the organic working medium loop pipe 300 to pass through only the low temperature evaporator 100, only the high temperature evaporator 200, or both the low temperature evaporator 100 and the high temperature evaporator 200 through the gate valve 301. That is, three loop options are provided. One circuit which only passes through the low-temperature evaporator 100, namely the organic working medium circuit pipeline 300, is shown in FIG. 5, and the other circuit which only passes through the high-temperature evaporator 200, namely the organic working medium circuit pipeline 300, is also shown in FIG. 6.
Another embodiment is shown in fig. 7, which differs from the embodiment shown in fig. 1 in that only one recess is provided, and the top of the modular cabinet 900 is provided with a recess in which the first air cooler 700 and the second air cooler 800 are located.
Another embodiment is shown in fig. 8, which is different from the embodiment shown in fig. 7 in that it further includes a solar power generation module 901 fixedly disposed inside the top of the modular box 900, and the surface of the solar power generation module 901 is flush with the top of the modular box 900.
Another embodiment is shown in fig. 9, which is different from the embodiment shown in fig. 7 in that it further includes a solar water heater 902 fixedly provided at the inner side of the top of the modular tank 900, and the surface of the solar water heater 902 is flush with the top of the modular tank 900.
Another embodiment is shown in fig. 10, which differs from the embodiment shown in fig. 1 in that a second heat source output 202 communicates with the first heat source input 101 to make full use of the second heat source.
Another embodiment is shown in fig. 11, which differs from the embodiment shown in fig. 1 in that the organic working medium circuit conduit 300 is divided into a main conduit 310, a first branch conduit 320 and a second branch conduit 330; the first branch pipe 320 is partially provided inside the low temperature evaporator 100 and both ends thereof are communicated with the main pipe 310 through the first set of synchronization valves 321, the second branch pipe 330 is partially provided inside the high temperature evaporator 200 and both ends thereof are communicated with the main pipe 310 through the second set of synchronization valves 331, and the main pipe 310 is further communicated with the expander 400, the first air cooler 700, the second air cooler 800 and the organic working medium pump 600 in sequence. The main branch pipe 310 may form a loop together with the first branch pipe 320, may form a loop together with the second branch pipe 330, and may form an integrated loop together with the first branch pipe 320 and the second branch pipe 330, that is, the organic working medium loop pipe 300. The first group 321 of synchronizing valves may be one control valve or two control valves in a group. The same is true of the second set of synchronized valves 331.
In the above embodiment, the first air cooler 700 and the second air cooler 800 are sequentially disposed as a circuit in series. In other embodiments, the first air cooler 700 and the second air cooler 800 may be arranged in parallel in the circuit.
Furthermore, the embodiment of the invention also comprises the technical characteristics of the above embodiments, and the two air cooler fast-installed ORC generator sets suitable for double heat sources are formed by combining the technical characteristics of the above embodiments.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A double-air-cooler fast-assembly ORC generator set suitable for double heat sources is characterized by comprising an organic Rankine cycle power generation module;
the organic Rankine cycle power generation module comprises a modular box body, and a first heat source input end, a second heat source input end, a first heat source output end, a second heat source output end, a low-temperature evaporator, a high-temperature evaporator, an organic working medium loop pipeline, an expander, a power generator, an organic working medium pump, a first air cooler and a second air cooler which are fixedly arranged in the modular box body;
the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end are respectively fixed on the inner side of the side part of the modular box body, and the surfaces of the first heat source input end, the second heat source input end, the first heat source output end and the second heat source output end do not protrude out of the side part;
the first air cooler and the second air cooler are fixed on the inner side of the top of the modular box body, and the surfaces of the first air cooler and the second air cooler are parallel to the top;
the first heat source input end is communicated with the first heat source output end through the low-temperature evaporator, and the second heat source input end is communicated with the second heat source output end through the high-temperature evaporator;
the organic working medium loop pipeline is partially arranged inside the low-temperature evaporator and partially arranged inside the high-temperature evaporator, and is also sequentially communicated with the expander, the first air cooler, the second air cooler and the organic working medium pump;
the expander is connected with the generator.
2. The ORC power generation unit of claim 1, further comprising a solar power module fixedly disposed inside a top portion of the modular tank, the solar power module having a surface that is planar with the top portion; or the organic Rankine cycle power generation module further comprises a solar water heater fixedly arranged on the inner side of the top of the modular box body, and the solar water heater is communicated with the first heat source input end to serve as a first heat source.
3. The ORC power generation plant of claim 1, wherein the organic working fluid circuit duct comprises a main duct, a first branch duct and a second branch duct, the first branch duct being partially disposed within the low temperature evaporator and being in communication with the main duct at both ends through a first set of synchronization valves, the second branch duct being partially disposed within the high temperature evaporator and being in communication with the main duct at both ends through a second set of synchronization valves, the main duct further communicating in sequence with the expander, the first air cooler, the second air cooler and the organic working fluid pump.
4. The ORC generator set of claim 3, wherein the first and second sets of synchronization valves are in mutually exclusive communication or are in independent communication.
5. The ORC genset of claim 1, wherein the second heat source output communicates with the first heat source input; or the ORC generator set further comprises a switching valve fixedly arranged in the modular box body, and the second heat source output end is communicated with the first heat source input end or the organic working medium loop pipeline through the switching valve.
6. The ORC generator set of claim 1, further comprising a switching valve fixedly disposed within the modular housing, and wherein for a predetermined first heat source, the second heat source input communicates sequentially through the switching valve the low temperature evaporator and the high temperature evaporator.
7. The ORC generator set of claim 1, wherein the air outlets of the first and second air coolers are respectively provided at different sides of the modular tank; or, the expander is a turbo expander; or the organic working medium of the organic Rankine cycle power generation module is R245fa, n-pentane or cyclohexane.
8. The ORC genset of claim 1, comprising at least three regularly arranged organic rankine cycle power generation modules.
9. The ORC power plant of claim 8, wherein interlocking cascades are further provided at two ends or two sides of each of the ORC power modules, and two adjacent ORC power modules are fixedly connected to each other through the interlocking cascades.
10. An ORC generator set according to any one of claims 1 to 9, wherein the modular enclosure is provided as a container, the top of the modular enclosure is provided with a lifting location or the bottom of the modular enclosure is provided with a set of pulleys.
CN202111363514.XA 2021-11-17 2021-11-17 Double-air-cooler fast-assembling ORC generator set suitable for double heat sources Withdrawn CN114087030A (en)

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Application publication date: 20220225