WO2022100089A1 - Système combiné de refroidissement, de chauffage et d'alimentation à combustibles multiples - Google Patents

Système combiné de refroidissement, de chauffage et d'alimentation à combustibles multiples Download PDF

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Publication number
WO2022100089A1
WO2022100089A1 PCT/CN2021/099958 CN2021099958W WO2022100089A1 WO 2022100089 A1 WO2022100089 A1 WO 2022100089A1 CN 2021099958 W CN2021099958 W CN 2021099958W WO 2022100089 A1 WO2022100089 A1 WO 2022100089A1
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Prior art keywords
fuel
heating
combustion chamber
heat exchange
plate
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PCT/CN2021/099958
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English (en)
Chinese (zh)
Inventor
靳普
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至玥腾风科技集团有限公司
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Publication of WO2022100089A1 publication Critical patent/WO2022100089A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/24—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being liquid at standard temperature and pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/06—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output providing compressed gas
    • F02C6/08—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output providing compressed gas the gas being bled from the gas-turbine compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/22—Fuel supply systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/26—Starting; Ignition
    • F02C7/268—Starting drives for the rotor, acting directly on the rotor of the gas turbine to be started
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06—Sorption machines, plants 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems
    • Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention relates to a multi-fuel combined cooling, heating and power supply system, belonging to the technical field of building energy supply.
  • central air conditioning, domestic hot water pipelines, direct drinking water pipelines, gas pipelines, power grids, etc. are generally installed in the current buildings to provide users with air-conditioning, heating, domestic hot water, tap water, direct drinking water, gas, electricity, etc.
  • all the resources provided need to pay a certain fee, and the user's use cost is relatively high.
  • laying new heating pipelines, water pipelines, air-conditioning pipelines and other projects will cost a lot. Therefore, so far there is no good solution to the heating problem in the south.
  • biogas digesters At present, some rural areas have built biogas digesters, but due to limited raw materials, the amount of biogas produced is small and not stable enough. For factories and other places, the biogas in the biogas digester is single-utilized and cannot be effectively converted.
  • the evaporating tube nozzle of the gas turbine uses a low pressure to inject oil into the evaporating tube in a direct way, and the gas around the evaporating tube and the burned gas in the combustion chamber heat the gas, and the fuel is initially evaporated and mixed to form a gas turbine.
  • the gaseous oil-rich mixture enters the combustion chamber and mixes and burns with the airflow in the main combustion hole.
  • the existing fuel nozzle is a single fuel nozzle, which has high requirements on the type of fuel. If the fuel is lacking, the operation has to be stopped.
  • the present invention provides a multi-fuel combined cooling, heating and power supply system.
  • the present invention combines the biogas digesters and stores them in the gas storage tank, together with the spare tank, provides fuel for the multi-fuel gas turbine and is used for cooling and heating
  • the combined power supply system can not only effectively utilize the biogas digesters in rural areas, but also reduce the cost of construction and use, reduce the burden on users, and has good economic benefits.
  • a multi-fuel combined cooling, heating and power supply system including a multi-fuel micro gas turbine
  • the multi-fuel micro gas turbine includes a rotating shaft, a regenerator, an air compressor, a turbine, a combustion chamber and an inspiring integrated motor.
  • the compressor and the inspiring integrated motor are sequentially sleeved on the rotating shaft; wherein, a hollow evaporation tube is fixed on the side wall of the combustion chamber; it also includes a fuel pipe, and the fuel nozzle connected to the end of the fuel pipe enters the combustion chamber through the side wall of the combustion chamber, and extend into the evaporation tube; at least two fuel nozzles are accommodated in the evaporation tube; correspondingly, the number of fuel pipes is the same as the number of fuel nozzles; the evaporation tubes are set to two or more, and are evenly arranged around the axis of the gas turbine rotating shaft; heat recovery
  • the air compressor is provided with a first inlet, a first outlet, a second inlet and a second outlet; the outlet of the
  • the medium heating device is a floor heating pipe or a radiator.
  • the cold air is passed to the user through a ground-cooled or wall-cooled pipeline.
  • the present invention can also introduce solar energy, including solar mirrors and solar energy collection devices, the solar energy collection device is arranged on a micro gas turbine, the micro gas turbine is located above or below the solar energy reflection mirror, and the solar energy collection device is located in the Solar mirrors (such as dish mirrors) focus on the spot.
  • solar energy including solar mirrors and solar energy collection devices
  • the solar energy collection device is arranged on a micro gas turbine
  • the micro gas turbine is located above or below the solar energy reflection mirror
  • the solar energy collection device is located in the Solar mirrors (such as dish mirrors) focus on the spot.
  • the solar energy collection device is a heat absorbing plate, and the heat absorbing plate is covered on the casing of the regenerator, or used as part or all of the casing of the regenerator.
  • the evaporating tube is an I-type, and extends obliquely into the combustion chamber at an included angle with the side wall of the combustion chamber, one end of which is fixed, the other end is suspended, and the suspended end is flared outward.
  • the evaporating tube is T-shaped, and extends obliquely into the combustion chamber at an angle with the side wall of the combustion chamber.
  • One end of the evaporation tube is fixed and the other end is suspended.
  • the suspended end is T-shaped and connected to another short tube.
  • the oblique evaporating tubes are connected orthogonally, and both ends are transparent.
  • the fuel injection hole at the end of the fuel nozzle is parallel to the axis of the evaporation tube.
  • a resistance wire is wound around the outer wall of the evaporation tube.
  • the evaporating tube and the fuel nozzle are made of ceramics or superalloy, and the evaporating tube made of superalloy material needs to be subjected to corresponding surface oxidation treatment to ensure certain high temperature resistance and corrosion resistance characteristics.
  • each biogas tank is respectively connected to the gas storage tank through pipelines, and the gas storage tank and the standby tank are respectively connected to the fuel pipeline of the gas turbine, and the gas storage tank is adopted.
  • spare tanks as fuel supply sources. Fuel such as ethanol, methanol, gasoline is stored in the spare tank. It can be placed after digging a hole in the ground, or it can be placed on the ground.
  • the biogas digester, gas storage tank, backup tank and gas turbine constitute the energy supply system.
  • the regenerator is a multi-chamber heat exchange device
  • the structure of the multi-chamber heat exchange device includes at least two heat exchange units, the heat exchange units include an input plate and an output plate, and the input plate and the side surface of the output plate is sealed and connected by a buckle device, and a heat exchange cavity is enclosed between a pair of adjacent input plates and output plates.
  • fins are provided on the inner walls of the input plate and the output plate.
  • the fins are integrally formed with the input plate or the output plate; or, the fins are fixed with the input plate or the output plate.
  • the fins are corrugated plates or straight plates.
  • the fastening device includes a first enclosure, a second enclosure and a side enclosure that are parallel to each other, and the cross-sections of the first enclosure, the second enclosure and the side enclosure form a "concave" shape, and the The edges of the input board and the output board are embedded in the card slot formed between the first enclosure, the second enclosure and the side enclosure.
  • screw holes are arranged at the top of the first enclosure and the second enclosure, and a pressure head is arranged on the outside of the input plate and the output plate, one end of the pressure head is attached to the input plate or the output plate, the other end is fixed to the beam, and the two ends of the beam are fixed. Adjusting bolts are provided.
  • the plurality of heat exchange units are arranged on top of each other, and a sealing plate seal is provided between the fastening devices between adjacent heat exchange units.
  • cross section of the heat exchange device is rectangular, fan-shaped or cylindrical.
  • the processing method of the multi-cavity heat exchange device includes the following steps:
  • the input plate and output plate with fins are processed by EDM, chemical etching or wire cutting from the original sheet;
  • a sealing plate is provided between adjacent fastening devices to seal.
  • the working process is as follows: the working medium (such as air) enters from the inlet of the air compressor, and after being compressed by the air compressor, enters the first inlet of the regenerator from its outlet, and flows from the air compressor to the first inlet of the regenerator.
  • the first outlet flows out, enters the combustion chamber, and then enters the turbine inlet to drive the turbine to rotate to do work and drive the motor to generate electricity; after the working fluid passes through the turbine to do work, it enters the second inlet of the regenerator from the turbine outlet.
  • the working medium flowing out from the second outlet can be divided into four paths: the first path is used to heat tap water at the entrance of the building, and the heated water can be stored in the water tank and supplied to users. It is used for drinking, cooking, etc.; the second route is used for heating through the medium at the entrance of the building, such as supplying water in floor heating pipes or radiators, and transporting it to the user; the third route is connected to the lithium bromide unit at the entrance of the building for cooling. , and transport it to the user to provide the user with cold air; the fourth route is purified by the purifier and then directly transported to the user as heating.
  • the heating can be directly used to dry medicinal materials or food.
  • Electronically controlled valves are installed on the four-way pipelines that the working medium flowing out of the second outlet of the regenerator passes through. When changing seasons, the flow rate of each valve is adjusted according to needs, and the output is in different proportions in spring, autumn, summer and winter.
  • the system can provide more electricity, distilled water/domestic hot water, and heating by adjusting the valves of each pipeline; in summer, the system can provide more electricity by adjusting the valves of each pipeline electricity, air-conditioning, distilled water/domestic hot water; in spring and autumn, the system can provide more electricity, distilled water/domestic hot water by adjusting the valves of each pipeline).
  • the air compressor When the air compressor is started, it is driven by the integrated motor.
  • the integrated motor first acts as a motor to drive the air compressor to rotate, and when it is accelerated to be able to operate independently, it acts as a generator to generate electricity.
  • the generated electricity can be used for building public electricity. Electricity can also be supplied to users.
  • the multi-fuel combined cooling, heating and power supply system of the present invention has the following beneficial effects:
  • the construction cost is relatively high, and the cost allocated to the user during use is also high.
  • Using the multi-fuel combined cooling, heating and power supply system of the present invention can reduce building construction and use costs, reduce user burden, and have good economic benefits.
  • the present invention is suitable for buildings such as hospitals, schools, residential buildings, office buildings, factories and the like.
  • Using the multi-fuel combined cooling, heating and power supply system of the present invention can reduce the municipal investment from tens of millions to hundreds of thousands, and has good economic benefits.
  • the flow of the output working medium from the second outlet of the regenerator of the present invention is controlled by adjusting the electric control valve, and the output is in different proportions in spring and autumn, summer and winter, and has better seasonal adaptability; at the same time, it can be adjusted according to the temperature. For example, if the temperature in early winter and early spring is lower, the heating mode can be turned on in advance, which is not affected by the government heating time and improves the quality of life of users.
  • the multi-fuel combined cooling, heating and power supply system of the present invention is suitable for buildings with different geographical locations and different needs, and is flexible in use.
  • a set of the combined cooling, heating and power supply system of the present invention can solve the heating and cooling supply of a community. question.
  • the present invention combines the biogas pools and stores them in the gas storage tank, together with the spare tank, provides fuel for the gas turbine, effectively and efficiently utilizes the biogas pools in rural areas, and has great economic benefit and social significance.
  • the gas turbine used in the present invention is provided with a plurality of fuel nozzles inside the evaporation tube, that is, a plurality of fuel supply channels are provided, and different types of fuels can be injected for combustion at different time periods to adapt to various working conditions; resistance wires are arranged outside the evaporation tube. , the evaporation tube can be heated during the start-up phase to ensure that the fuel can be atomized and evaporated without gas heating.
  • the evaporation tube of the invention is arranged inside the flame tube of the combustion chamber.
  • the mixture of air and fuel in the heating tube is heated by the high-temperature gas of the combustion chamber or preheated by the resistance wire, so that the fuel is atomized and evaporated, and becomes a gaseous fuel that is easy to burn, and the combustion is more sufficient. .
  • the layout of the entire combustion chamber is simple and compact, and the flow resistance loss and heat loss are relatively low.
  • the evaporation tube and fuel nozzle have strong applicability to fuel, and are suitable for gasoline, kerosene, methanol, ethanol (and other biomass fuels) and other fuels.
  • the oil and gas in the evaporation tube are evenly mixed, which avoids the local oil-rich area in the main combustion area, and reduces smoke and carbon deposition.
  • the evaporation tube does not require high oil supply pressure, and the temperature field distribution at the outlet of the combustion chamber is relatively uniform and stable.
  • the regenerator used in the present invention is a multi-cavity heat exchange device, which has the following advantages:
  • the multi-cavity heat exchange device of the present invention is to make a larger heat exchange cavity into a plurality (at least 2) of smaller heat exchange cavity, and connect the smaller heat exchange cavity,
  • the deformation between two large plates is transformed into small deformations of multiple small plates, and a pre-tightening force is added to the middle of the plate to reduce deformation and ensure long life and high reliability.
  • the heat exchange plate of the present invention is not simply reduced in size, but for any traditional heat exchange plate, the size of the heat exchange plate of the present invention is reduced to fraction or tenth.
  • the increase of the heat exchange cavity reduces the temperature gradient between the adjacent plates, see Figure 4, reduces the air pressure in a single cavity, and prevents bursting.
  • the multi-cavity heat exchange device of the present invention adopts the multi-cavity heat exchange plate, which can shorten the welding seam, and the process is simple and difficult to leak.
  • the pressure head exerts pressure in the direction perpendicular to the heat exchange plate, preventing the heat exchange plate from bulging and deforming due to the action of air pressure, preventing bursting, improving the service life of the device and reducing maintenance costs.
  • FIG. 1 is a schematic diagram of an embodiment of the multi-fuel combined cooling, heating and power supply system of the present invention.
  • FIG. 2 is a schematic structural diagram of the gas turbine of the present invention.
  • FIG. 3 is a schematic structural diagram 1 of an evaporation tube (type I) and a fuel nozzle.
  • FIG. 4 is a second structural schematic diagram of an evaporation tube (type I) and a fuel nozzle.
  • FIG. 5 is a third structural schematic diagram of an evaporation tube (T-shaped) and a fuel nozzle.
  • FIG. 6 is a schematic structural diagram of the energy supply system of the present invention.
  • FIG. 7 is a schematic diagram of the structure of the heat exchange unit in which the fins are wave-shaped plates in the multi-cavity heat exchange device of the present invention.
  • FIG. 8 is a schematic structural diagram of a heat exchange unit in which the fins are straight plates in the multi-cavity heat exchange device of the present invention.
  • FIG. 9 is a schematic view of the end face position structure of an embodiment of the multi-cavity heat exchange device of the present invention.
  • FIG. 10 is a schematic cross-sectional structural diagram of an embodiment of the multi-cavity heat exchange device of the present invention.
  • FIG. 11 is a schematic view of the end face position structure of another embodiment of the multi-cavity heat exchange device of the present invention.
  • FIG. 12 is a schematic cross-sectional structural diagram of another embodiment of the multi-cavity heat exchange device of the present invention.
  • Example 13 is a schematic diagram of an implementation of the multi-fuel cogeneration system of cooling, heating and power according to Example 2 of the present invention.
  • 1-multi-fuel micro gas turbine 105-combustion chamber, 12-fuel pipeline, 13-fuel nozzle, 131-fuel injection hole, 14-evaporating pipe, 101-regenerator, 1011-first inlet, 1012-first One outlet, 1013-second inlet, 1014-second outlet, 102-air compressor, 103-inspired integrated motor, 104-turbine, 2-solar mirror, 21-solar collector, 3-lithium bromide unit, 4-water tank, 5-medium heating device, 6-air purifier, 7-biogas tank, 8-air storage tank, 9-spare tank, 10-input plate, 11-fin, 20-output plate, 30-buckle Combination device, 31-enclosure one, 32-enclosure two, 33-side enclosure, 34-card slot, 35-sealing plate, 40-indenter, 41-beam, 50-heat exchange cavity.
  • a multi-fuel combined cooling, heating and power supply system includes a multi-fuel micro-turbine 1, a lithium bromide unit 3, and the lithium bromide unit 3 is used to provide cooling capacity for users;
  • the multi-fuel micro-turbine 1 includes a rotating shaft, The air compressor 102, the turbine 104, the combustion chamber 105 and the inspiring integrated motor 103 are sequentially sleeved on the rotating shaft; as shown in FIG.
  • the combustion chamber A hollow evaporation tube 14 is fixed on the side wall of 105; it also includes a fuel pipe 12, and the fuel nozzle 13 connected to the end of the fuel pipe 12 enters the combustion chamber 105 through the side wall of the combustion chamber 105, and extends into the evaporation tube 14; the evaporation tube At least two fuel nozzles 13 are accommodated within 14 ; correspondingly, the number of fuel conduits 12 is the same as the number of fuel nozzles 13 .
  • evaporating tubes 14 There are two or more evaporating tubes 14 , and they are evenly arranged around the axis of the rotating shaft of the gas turbine.
  • the regenerator is provided with a first inlet 1011, a first outlet 1012, a second inlet 1013 and a second outlet 1014; the outlet of the air compressor is connected to the first inlet 1011 of the regenerator, and the first outlet 1012 of the regenerator is connected to
  • the inlet of the combustion chamber 105 is connected, the outlet of the combustion chamber 105 is connected with the inlet of the turbine, and the outlet of the turbine is connected with the second inlet 1013 of the regenerator;
  • the second outlet 1014 of the regenerator 101 is connected with the lithium bromide unit 3 for refrigeration (lithium bromide After the unit 3 is cooled, the cold air is passed to the user through the ground cooling or wall cooling pipes), or/and connected with the tap water heating device to heat the tap water (the heated tap water can be temporarily stored in the water tank 4), or/and with the medium heating device 5 (such as floor heating pipes or radiators) to be connected to heating medium for heating, or/and connected to air purifier 6 to deliver purified gas to users as warm air.
  • the evaporating tube 14 is an I-type, as shown in Figures 3 and 4, and extends obliquely into the combustion chamber 105 at an angle with the side wall of the combustion chamber 105, one end of which is fixed and the other end is suspended. The set end is flared outward.
  • the evaporation tube 14 is T-shaped. As shown in FIG. 5 , it extends into the combustion chamber 105 obliquely at an angle with the side wall of the combustion chamber 105. One end is fixed and the other end is suspended, and the suspended end is T-shaped. Connect another short tube, the short tube is orthogonally connected with the oblique evaporation tube, and both ends are transparent.
  • the evaporation tube 14 is an I-type or a T-type according to the actual demand, so as to ensure complete atomization and evaporation and small flow resistance loss.
  • the fuel injection hole 131 at the end of the fuel nozzle 13 is parallel to the axis of the evaporation tube 14 .
  • a resistance wire is wound around the outer wall of the evaporation tube 14 .
  • the evaporating tube and the fuel nozzle are made of ceramics or superalloy, and the evaporating tube made of superalloy material needs to be subjected to corresponding surface oxidation treatment to ensure certain high temperature resistance and corrosion resistance characteristics.
  • each biogas digester 7 is connected to the gas storage tank 8 and the gas storage tank 8 through pipelines respectively.
  • the backup tank 9 are respectively connected to the two fuel pipelines 12 of the gas turbine 1, and two fuel supply sources of the gas storage tank 8 and the backup tank 9 are used.
  • the reserve tank 9 stores fuel, such as ethanol, methanol, gasoline. It can be placed after digging a hole in the ground, or it can be placed on the ground.
  • the biogas tank 7 , the gas storage tank 8 , the backup tank 9 and the gas turbine 1 constitute an energy supply system, as shown in FIG. 6 .
  • the working process is as follows: the working medium (such as air) enters from the inlet of the air compressor 102, and after being compressed by the air compressor 102, enters the first inlet of the regenerator 101 from its outlet, and flows out from the first outlet into the combustion chamber 105.
  • the working medium such as air
  • the working medium (500-600°C) flowing out from the second outlet is divided into four paths: the first path is used to heat the tap water at the entrance of the building, and the heated water can be stored in the water tank 4, Supply users for drinking, cooking, etc.; the second path is used for heating through the medium at the entrance of the building, such as supplying water in floor heating pipes or radiators 5, and transporting it to users; the third path is connected to the entrance of the building.
  • the lithium bromide unit 3 is then refrigerated and transported to the user to provide the user with cold air; the fourth route is purified by the air purifier 6 and directly transported to the user as heating.
  • Electronically controlled valves are installed on the four-way pipelines that the working medium flowing out of the second outlet of the regenerator 101 passes through.
  • the flow rate of each valve is adjusted according to needs, and the output is in different proportions in spring, autumn, summer and winter. Has better seasonal adaptability:
  • the system can provide more electricity, distilled water/domestic hot water and heating by adjusting the valves of each pipeline;
  • the system can provide more electricity, air-conditioning, distilled water/domestic hot water by adjusting the valves of each pipeline;
  • the system can provide more electricity, distilled water/domestic hot water by adjusting the valves of each pipeline.
  • the air compressor 102 When the air compressor 102 is started, it is driven by the heuristic integrated motor 103 .
  • the heuristic integrated motor 103 first acts as a motor to drive the air compressor 102 to rotate, and then acts as a generator to generate electricity after it is accelerated to be able to operate independently.
  • the generated electricity can be used for building public electricity, and the excess electricity can also be supplied to users.
  • the lithium bromide units, tap water heating devices (such as boilers), medium heating devices (such as floor heating pipes or radiators), and air purifiers are all commercially available units.
  • the regenerator is a multi-cavity heat exchange device, and its structure is as follows: it includes at least two heat exchange units, the heat exchange units include an input plate 10 and an output plate 20, and the sides of the input plate 10 and the output plate 20 are A heat exchange cavity 50 is enclosed between a pair of adjacent input plates 10 and output plates 20 through the sealing connection of the snap-fit device 30 , as shown in FIGS. 7 to 12 .
  • fins 11 are provided on the inner walls of the input plate 10 and the output plate 20; the fins 11 are integrally formed with the input plate 10 or the output plate 20; or, the fins 11 It is fixed to the input board 10 or the output board 20 .
  • the fins 11 are corrugated plates or straight plates.
  • the fastening device 30 includes a first enclosure 31 , a second enclosure 32 and a side enclosure 33 parallel to each other, the first enclosure 31 , the second enclosure 32 and the side enclosures 33 .
  • the cross section of 33 forms a "concave" shape, and the edges of the input plate 10 and the output plate 20 are embedded in the slot 34 formed between the first enclosure 31 , the second enclosure 32 and the side enclosure 33 .
  • the tops of the first enclosure 31 and the second enclosure 32 are provided with screw holes, and the outer sides of the input plate 10 and the output plate 20 are provided with a pressure head 40, one end of the pressure head 40 is fitted to the input plate 10 or the output plate 20, and the other end is fixed to the beam 41 , both ends of the beam 41 are provided with adjustment bolts.
  • the adjusting bolt is connected with the screw hole and is used to adjust the preload force of the pressure head on the input plate and the output plate.
  • the plurality of heat exchange units are arranged on top of each other, and a sealing plate 35 is provided between the fastening devices 30 for sealing between adjacent heat exchange units.
  • the cross section of the heat exchange device is rectangular, fan-shaped or cylindrical.
  • the fastening device 30 is a disc-shaped flange, see FIGS. 11 and 12
  • the first enclosure 31 and the second enclosure 32 are flange end faces
  • the raised circular shells are parallel to each other, and the two adjacent circular shells and the flange end face are surrounded by the slot 34.
  • the flange end face is continuous and dense, it can be used for sealing. Therefore, there is no need to additionally dispose the sealing plate 35 .
  • the axis is gradually installed outward.
  • the input plate 10 and the output plate 20 belong to the heat exchange plate.
  • the heat exchange device when configured to receive solar heating, the part of the outer surface of the heat exchange device that does not receive reflected light is covered with a water tank to slow down heat loss.
  • the multi-cavity heat exchange device is suitable for heat exchange occasions such as photothermal and nuclear energy.
  • the processing method of the multi-cavity heat exchange device includes the following steps:
  • the input board 10 and the output board 20 with the fins 11 are processed by EDM cutting, chemical etching or wire cutting from the original plate;
  • a sealing plate 35 is provided between the adjacent fastening devices 30 for sealing.
  • a multi-fuel combined cooling, heating and power supply system is different from Embodiment 1 in that it also includes a solar mirror 2 and a solar energy collection device 21.
  • the solar energy collection device 21 is set on a micro gas turbine; The gas turbine is positioned above the solar mirror 2, and the solar collector 21 is positioned on the focal point of the solar mirror 2 (eg, dish mirror).
  • the solar energy collecting device 2 is a heat absorbing plate, and the heat absorbing plate is covered on the casing of the regenerator 101 , or used as part or all of the casing of the regenerator 101 .
  • the light increases the heat accumulated on the regenerator 101 during the day, which can make the combined cooling, heating and power generation system of the micro-combustion engine generate more electric power and heat, and benefit the user.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Système combiné de refroidissement, de chauffage et d'alimentation à combustibles multiples, comprenant une micro-turbine à gaz à combustibles multiples (1); la micro-turbine à gaz à combustibles multiples (1) comprend un régénérateur de chaleur (101) et une chambre de combustion (105); des tuyaux d'évaporation creux (14) sont fixés sur les parois latérales de la chambre de combustion (105); le système combiné de refroidissement, de chauffage et d'alimentation à combustibles multiples comprend en outre des tuyaux de combustible (12); des buses de combustible (13) en communication avec les extrémités des tuyaux de combustible (12) pénètrent à travers la paroi latérale de la chambre de combustion (105), entrent dans la chambre de combustion (105), et s'étendent dans les tubes d'évaporation (14); au moins deux buses de combustible (13) sont logées dans chaque tuyau d'évaporation (14); les tuyaux d'évaporation (14) sont disposés uniformément autour de l'axe d'un arbre rotatif de la turbine à gaz (1); un gaz d'échappement du régénérateur de chaleur (101) est respectivement introduit dans une unité de bromure de lithium (3), un dispositif de chauffage d'eau du robinet, un dispositif de chauffage de milieu et un purificateur (6). Une source de combustible de la micro-turbine à gaz (1) provient d'un réservoir de stockage de biogaz (8) et d'un réservoir de réserve de combustible (9). Un procédé de fabrication d'un dispositif d'échange de chaleur à chambres multiples est également divulgué. Le système combiné de refroidissement, de chauffage et d'alimentation à combustibles multiples est utilisé, réduisant les coûts de construction et d'utilisation, réduisant la charge de l'utilisateur, ayant de bons avantages économiques, et ayant une bonne adaptabilité aux saisons. Le système combiné de refroidissement, de chauffage et d'alimentation à combustibles multiples est applicable à des bâtiments tels que des hôpitaux, des écoles, des bâtiments résidentiels, des bâtiments de bureaux et des usines.
PCT/CN2021/099958 2020-11-13 2021-06-15 Système combiné de refroidissement, de chauffage et d'alimentation à combustibles multiples WO2022100089A1 (fr)

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CN112502835A (zh) * 2020-11-13 2021-03-16 至玥腾风科技集团有限公司 多燃料冷热电联供系统
CN112503977A (zh) * 2020-11-13 2021-03-16 至玥腾风科技集团有限公司 一种多腔体式换热装置及加工方法
CN112503793A (zh) * 2020-11-13 2021-03-16 靳新中 建筑内的微燃机冷热电联供系统

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