CN108488877B - It is a kind of for steam power plant and the hold over system of distributed trilogy supply gas turbine - Google Patents
It is a kind of for steam power plant and the hold over system of distributed trilogy supply gas turbine Download PDFInfo
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- CN108488877B CN108488877B CN201810202877.7A CN201810202877A CN108488877B CN 108488877 B CN108488877 B CN 108488877B CN 201810202877 A CN201810202877 A CN 201810202877A CN 108488877 B CN108488877 B CN 108488877B
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- 238000005338 heat storage Methods 0.000 claims abstract description 111
- 230000008859 change Effects 0.000 claims abstract description 53
- 238000004146 energy storage Methods 0.000 claims abstract description 31
- 238000009825 accumulation Methods 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 239000012071 phase Substances 0.000 claims description 91
- 239000004744 fabric Substances 0.000 claims description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 38
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 34
- 239000012782 phase change material Substances 0.000 claims description 34
- 230000009466 transformation Effects 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 21
- 238000005057 refrigeration Methods 0.000 claims description 18
- 230000007704 transition Effects 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 14
- 239000002918 waste heat Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 9
- 238000010025 steaming Methods 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 4
- 238000013507 mapping Methods 0.000 claims description 3
- 230000005619 thermoelectricity Effects 0.000 claims description 2
- 230000031709 bromination Effects 0.000 claims 2
- 238000005893 bromination reaction Methods 0.000 claims 2
- 238000000605 extraction Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000010792 warming Methods 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- MFUVDXOKPBAHMC-UHFFFAOYSA-N magnesium;dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MFUVDXOKPBAHMC-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- 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
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
-
- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/028—Control arrangements therefor
-
- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to a kind of steam power plant and the hold over systems of distributed trilogy supply gas turbine, comprising: heat source loop, heat input circuit, heat output loop, phase change heat storage tank, with hot loop and thermal control device.The present invention is using steam power plant or distributed trilogy supply as heat source, when the output of the heat of the above heat source is greater than heat actual demand, realize that heat stores using phase-change accumulation energy, and phase-change accumulation energy is discharged when heat demand increases, is optimized to realize electricity, the matching of hot two kinds of energy outputs and actual demand and whole energy efficiency.The present invention realizes the monitoring and adjusting of precision, intelligentized phase-changing energy-storing capacity, guarantees that heat storage and two aspect of output are matched with the energy storage capability of phase-change accumulation energy.Present invention improves over the topologys and switching pipeline structure of heat input and output, can effectively be adapted to distributed trilogy supply cooling and warming unit；The present invention has carried out structure improvement to phase-changing energy-storing case, enhances its thermal efficiency.
Description
Technical field
It is the present invention relates to energy technology field, in particular to a kind of for steam power plant and distributed trilogy supply gas turbine
Hold over system.
Background technique
Electric energy and thermal energy are all basic energy resources necessary to human lives, and both form of energy are often produced jointly
And distribution.China's energy utilization rate about 36.3% at present, lower than developed country 10% or so, one of major reason is to send out
Electric UTILIZATION OF VESIDUAL HEAT IN is insufficient, and the flue gas for carrying waste heat is discharged among atmosphere in vain.Waste heat belong to temperature 250 degrees Celsius with
Under middle-low grade energy, it is contemplated that the factors such as distance and loss carry out energy step with being real in finite spatial extent
The effective means of existing heat recovery.
Traditional UTILIZATION OF VESIDUAL HEAT IN mode is to realize cogeneration of heat and power by steam power plant, and the high-temperature steam of generating set passes through heat exchange
Device heats the return water of heating network, so that steam power plant generates simultaneously and externally exports power supply and thermal energy, can protect simultaneously
Hinder town and country electricity consumption and the demand with heat.It is again emerging in recent years that adapt to small-scale, modular energy production requirement distribution cold
Thermoelectricity trilogy supply CCHP (Combined Cooling, Heating and Power, referred to as distributed trilogy supply), with day
Right gas is that main fuel tape moves the operation of the fuel gas generations equipment such as gas turbine, and the electricity needs of the power supply user of generation is
350-550 degrees Celsius of high-temperature flue gas being discharged after system power generation is sent into waste heat recovery utilizing equipment (waste heat boiler etc.), utilizes height
The waste heat evaporation of warm flue gas generates steam, which can also be incited somebody to action by heat exchanger heating return water to user's heat supply
Steam generates heat medium water by heat exchange, and heat medium water is sent into lithium bromide absorption-type machine unit and freezes；It mentions significantly in this way
The primary energy utilization ratio of high entire distributed combined supply system, realizes the cascade utilization of the energy.
As it can be seen that all there is external heat and electric energy supply in steam power plant and distributed trilogy supply.But extraneous heat and
Electrical demand is not always exact matching.When the actual demand of electric energy is larger, it often will appear the feelings of heat excess supply
Condition, if allowing superfluous heat to lose in vain obviously and producing new energy waste；Therefore, when heat supply is greater than reality
Heat demand, it is necessary to carry out the energy storage of thermal energy.On the contrary, when extraneous heat demand is larger, steam power plant and distribution three
Co-feeding system faces the problem of electric energy output surplus to supply enough thermal energy, and electric energy is not easy to store, especially pair
In distributed trilogy supply system be difficult to realize again electric energy to system outside output, therefore there are still the energy consumed in vain lack
It falls into.
Summary of the invention
To overcome above-mentioned at least one defect of the existing technology, the present invention provides one kind to be used for steam power plant and distribution
The hold over system of formula trilogy supply gas turbine.The present invention is using steam power plant or distributed trilogy supply as heat source, when the heat of the above heat source
When amount output is greater than heat actual demand, realize that heat stores using phase-change accumulation energy, and discharge phase when heat demand increases
Become energy storage, optimizes to realize electricity, the matching of hot two kinds of energy outputs and actual demand and whole energy efficiency.The present invention is real
The now monitoring and adjusting of precision, intelligentized phase-changing energy-storing capacity guarantees heat storage and two aspect of output and phase-change accumulation energy
Energy storage capability matching.Present invention improves over the topology of heat input and output and switch pipeline structure, can effectively be adapted to point
Cloth trilogy supply cooling and warming unit；The present invention has carried out structure improvement to phase-changing energy-storing case, enhances its thermal efficiency.
The hold over system for being used for steam power plant and distributed trilogy supply gas turbine characterized by comprising heat source returns
Road, heat input circuit, heat output loop, phase change heat storage tank, with hot loop and thermal control device；
The heat source loop is the waste heat gas output loop of steam power plant or distributed trilogy supply；It is described to be with hot loop
The heating and refrigerating circuit of steam power plant's heating network or distributed trilogy supply；
The heat input circuit has the first Fabric Interface and the second Fabric Interface；It is defeated that first Fabric Interface introduces heat
Enter medium；Heat input medium enters the phase change heat storage tank by the first Fabric Interface and carries out heat exchange, by the heat of carrying
It is stored in the phase change heat storage tank, then returns to heat source loop from the phase change heat storage tank by the second Fabric Interface；The heat
Output loop has third Fabric Interface and the 4th Fabric Interface, and third Fabric Interface introduces thermal output Jie from hot loop
Matter；The thermal output medium enters the phase change heat storage tank by third Fabric Interface and carries out heat exchange, obtains heat, then
It returns to from the phase change heat storage tank by the 4th Fabric Interface with hot loop, the heat of output phase change heat storage tank storage；
Also, the phase change heat storage tank includes thermal medium input general pipeline and thermal medium delivery trunk；The thermal medium input
General pipeline selectively communicates with first Fabric Interface or third Fabric Interface, and thermal medium delivery trunk selectivity
Ground is connected to second Fabric Interface or the 4th Fabric Interface；The phase change heat storage tank includes several phase-transition heat-storage units,
Each phase-transition heat-storage unit has a thermal medium inlet branch and a thermal medium exports branch pipe, the every thermal medium input
Branch pipe is connected to the thermal medium and inputs general pipeline, and the every thermal medium output branch pipe is connected to the thermal medium delivery trunk；
If each phase-transition heat-storage unit includes energy-storage box, phase-change material, at least two groups heat pipe and dry plate pipe wing；Its
In the arrival end of every group of heat pipe be connected to the thermal medium inlet branch, and to be connected to the thermal medium defeated for the outlet end of every group of heat pipe
Branch pipe out；Heat pipe described in every group is bent extension in the energy-storage box；If the dry plate pipe wing is located in parallel to one another described
In energy-storage box, the outside wall surface of every pipe wing and every group of heat pipe is had a common boundary；And phase transformation is filled in each phase-transition heat-storage unit energy-storage box
Material realizes the storage and release of thermal energy by the solid-liquid phase change of phase-change material；
The thermal control device is used for the heat storage capacity of each phase-transition heat-storage unit of real-time monitoring, according to each phase transformation
The heat storage capacity of thermal storage unit turns on or off its thermal medium inlet branch and thermal medium output branch pipe, and according to institute
The heat storage capacity for stating each phase-transition heat-storage unit controls the flow of its thermal medium inlet branch and thermal medium output branch pipe.
Preferably, the thermal medium inlet branch of each phase-transition heat-storage unit and thermal medium output branch pipe all have flow control
Valve processed, the flow control valve are used to open or are closed the thermal medium inlet branch or thermal medium output branch pipe, and
Control heat input medium or thermal output medium pass in and out the flow of the phase-transition heat-storage unit；And the flow control valve according to
Flow is opened, is closed and controlled to the flow control signal of thermal control device.
It may further be preferable that the thermal control device includes accumulation of energy monitoring unit, storage volume measuring and calculating unit, flow
Setting unit；Wherein, one group of accumulation of energy monitoring unit is arranged in each phase-transition heat-storage unit, and every group of accumulation of energy monitoring unit includes several
Phase transformation monitor, the phase transformation monitor is arranged in inside the phase-change material of filling, for obtaining the phase transformation of the phase-change material
Morphological image；Storage volume measuring and calculating unit is used to obtain one group of phase transition patter image in real time from every group of accumulation of energy monitoring unit, passes through
By this group of phase transition patter image and the phase transition patter template matching prestored, determine that the heat storage of each phase-transition heat-storage unit is held
Amount；For the flow set unit according to the heat storage capacity of each phase-transition heat-storage unit, determine each phase-transition heat-storage unit can
With surplus, and according to the mapping relations of pre-stored available surplus and flow velocity, the stream for being directed to each phase-transition heat-storage unit is determined
Amount control signal.
It may further be preferable that the phase transformation monitor includes high temperature resistant heat insulation transparent pipe, and it is arranged in the resistance to height
Miniature webcam in warm transparent pipe, the high temperature resistant heat insulation transparent pipe are arranged inside the phase-change material；And it is described micro-
Type camera is sealed in the inside of the high temperature resistant heat insulation transparent pipe, for obtaining the phase transition patter figure inside the phase-change material
Picture.
Preferably, steam water heat exchanger is steamed in the first Fabric Interface connection in the heat input circuit, presses from steam power plant
The steam extracted in cylinder is exchanged heat by the steaming steam water heat exchanger with the water in heat input circuit, and hot water is made after heat exchange
The phase change heat storage tank is inputted by the first Fabric Interface for heat input medium and carries out energy storage, heat input medium is handed over by second after energy storage
Alias flows back into the steaming steam water heat exchanger.
Preferably, first Fabric Interface in the heat input circuit connects one water- to-water heat exchanger of steam, from distribution three
The steam that the waste heat boiler of co-feeding system extracts is changed by the steaming steam water heat exchanger with the water in heat input circuit
Heat, hot water inputs the phase change heat storage tank by the first Fabric Interface as heat input medium and carries out energy storage after heat exchange, hot after energy storage
Input medium flows back into the steaming steam water heat exchanger by the second Fabric Interface.
It may further be preferable that the third Fabric Interface connection combining valve of the heat output loop, the combining valve point
It Lian Jie not heating network circuit and lithium bromide absorption refrigeration machine circuit；As thermal output medium as described in the entrance of third Fabric Interface
Phase change heat storage tank carries out heat exchange, obtains heat；4th Fabric Interface connects shunt valve, and the thermal output medium passes through
4th Fabric Interface enters heating network circuit and lithium bromide absorption refrigeration machine circuit by shunt valve.
It may further be preferable that the third Fabric Interface of the heat output loop connects heating network by the combining valve
Return pipe, heating network return water as thermal output medium by third Fabric Interface enter the phase change heat storage tank carry out heat friendship
It changes, obtains heat；4th Fabric Interface of the heat output loop connects the upper hose of heating network, institute by the shunt valve
It states heating network return water and enters heating network from the phase change heat storage tank by four Fabric Interfaces.
It may further be preferable that the third Fabric Interface of the heat output loop connects lithium bromide by the combining valve
The generator of absorption refrigerating machine；The heat medium water of lithium bromide absorption refrigeration machine enters institute by third Fabric Interface as thermal output medium
It states phase change heat storage tank and carries out heat exchange, obtain heat；4th Fabric Interface of the heat output loop passes through the branch
Valve connects the generator of lithium bromide absorption refrigeration machine, and the heat medium water enters bromine from the phase change heat storage tank by the 4th Fabric Interface
Change the generator of lithium-absorbing refrigeration machine.
Preferably, the phase-transition heat-storage unit is provided with heat exchange grid in the filling space that heat pipe and pipe wing surround.
The present invention carries out thermal energy storage by phase-change accumulation energy, so as to the heat for generating steam power plant and distributed trilogy supply
Amount savings in the apparatus, and is discharged when being needed with hot loop, can be alleviated between heat output and heat demand
Imbalance, avoid wasting when thermal energy output is excessive.The present invention uses phase-change accumulation energy, and energy storage density is high, and heat master
It is distributed near phase transition temperature, therefore practical utilize is easier.Intelligence degree of the present invention is high, topological structure and cabinet knot
Structure design is efficient and rational.
Detailed description of the invention
It is exemplary below with reference to the embodiment of attached drawing description, it is intended to for the explanation and illustration present invention, and cannot manage
Solution is the limitation to protection scope of the present invention.
Fig. 1 is the hold over system overall structure signal of steam power plant provided by the invention and distributed trilogy supply gas turbine
Figure；
Fig. 2 is phase-changing energy-storing unit overall structure cross-sectional view provided by the invention；
Fig. 3 is phase-changing energy-storing unit heat pipe and pipe fin structure stereoscopic schematic diagram provided by the invention；
Fig. 4 is phase-changing energy-storing unit pipes fin structure sectional view provided by the invention；
Fig. 5 is thermal control device structural schematic diagram provided by the invention；
Fig. 6 is phase transformation monitor structural schematic diagram provided by the invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.
It should be understood that in the accompanying drawings, it is white begin to same or similar label eventually to indicate same or similar element or
Element with the same or similar functions.Described embodiments are some of the embodiments of the present invention, rather than whole implementation
Example, in the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
Fig. 1 is the hold over system integrated stand composition of the present invention for being used for steam power plant and distributed trilogy supply gas turbine,
Include: heat input circuit 1, heat output loop 2, phase change heat storage tank 3, heat source loop 4, with hot loop 5.
The heat source loop 4 is the waste heat gas output loop of steam power plant or distributed trilogy supply；It is described to use hot loop 5
For the heating and refrigerating circuit of steam power plant's heating network or distributed trilogy supply.Wherein when being used for steam power plant, heat source loop 4 passes through
Steaming steam water heat exchanger 401 will change from the steam extracted in steam power plant's intermediate pressure cylinder and the recirculated water in heat input circuit 1
Heat, the hot water generated after heat exchange are delivered to by heat input circuit 1 with hot loop 5, and are supplied with the steam power plant of hot loop 5
Heat supply network return water is exchanged heat again by heat exchanger 203, and the heating network return water after heat exchange is delivered back by heat output loop 2
Heating network is realized for thermal output.When for distributed trilogy supply, heat source loop 4 will be from distribution by steaming steam water heat exchanger
The steam that the waste heat boiler of combined supply system extracts exchanges heat with the recirculated water in heat input circuit 1, generates after heat exchange
Hot water is delivered to by heat input circuit 1 with hot loop 5；With hot loop 5 provide the heating network return water of distributed trilogy supply with
And the heat medium water of lithium bromide absorption refrigeration machine, it is exchanged heat again by heat exchanger 203, the heating network return water and heating agent after heat exchange
Water is delivered back into heating network and lithium bromide absorption refrigeration machine by heat output loop 2 respectively.
The heat input circuit 1 has the first Fabric Interface 101 and the second Fabric Interface 102, and heat input medium is logical
It crosses the first Fabric Interface 101 and enters the phase change heat storage tank 3 progress heat exchange, the heat of carrying is stored in the phase-transition heat-storage
Then case 3 returns to heat input circuit 1 from the phase change heat storage tank 3 by the second Fabric Interface 102.The heat exports back
Road 2 has third Fabric Interface 201 and the 4th Fabric Interface 202, and thermal output medium enters institute by third Fabric Interface 201
State phase change heat storage tank 3 carry out heat exchange, obtain thermal temperature increase, then carry heat by the 4th Fabric Interface 202 from
The phase change heat storage tank 3 returns to heat output loop 2.In this way, when the waste heat output quantity of steam power plant or distributed trilogy supply is big
In heat demand, so that it may carry out heat storage in phase change heat storage tank 3；Correspondingly, when heat demand amount is big, it can be by phase transformation
Heat storage tank 3 is supplemented as heat source.
Wherein, when for distributed trilogy supply, the third Fabric Interface 201 of the heat output loop connects combining
Valve, the combining valve are separately connected heating network circuit and lithium bromide absorption refrigeration machine circuit；It is connected and is supplied by the combining valve
The return pipe of heat supply network, heating network return water, which enters the phase change heat storage tank by third Fabric Interface 201 as thermal output medium, to carry out
Heat exchange, obtains heat；Third Fabric Interface 201 also connects the generation of lithium bromide absorption refrigeration machine by the combining valve
Device；The heat medium water of lithium bromide absorption refrigeration machine enters the phase change heat storage tank 3 by third Fabric Interface 201 as thermal output medium
Heat exchange is carried out, heat is obtained；4th Fabric Interface 202 of the heat output loop connects heat supply by the shunt valve
The upper hose of net, the heating network return water enter heating network from the phase change heat storage tank 3 by the 4th Fabric Interface 202.4th hands over
Alias 202 connects the generator of lithium bromide absorption refrigeration machine by the shunt valve, and the heat medium water is by the 4th Fabric Interface
Enter the generator of lithium bromide absorption refrigeration machine from the phase change heat storage tank.
Phase change heat storage tank fills phase-change material, realizes the storage and release of thermal energy.Phase-change material has following temperature characterisitic:
When temperature raising reaches phase transition temperature, the physical state of phase-change material changes, and the temperature of phase-change material itself is in phase transformation
It almost remains unchanged before completing, during this, a large amount of heat of transformations are absorbed or released out.To generate in the phase transformation stage
One allows us to obtain metastable constant temperature time than wider temperature platform, the appearance of this platform.
The energy storage density of phase-change accumulation energy is high, and heat is mainly distributed near phase transition temperature, therefore practical utilize is easier, for
Controlling heating network thermal output has good result.Cooperate heating network temperature range, phase-change material selected by the present invention can be adopted
Use magnesium nitrate hexahydrate.
Such as Fig. 1, the phase change heat storage tank 3 includes thermal medium input general pipeline 305 and thermal medium delivery trunk 306；The heat
Medium input general pipeline 305 selectively communicates with first Fabric Interface 101 or third Fabric Interface by switching valve 315
201, and the thermal medium delivery trunk 306 by switching valve 316 selectively communicate with second Fabric Interface 102 or
4th Fabric Interface 202.To which in the accumulation of energy stage, thermal medium input general pipeline 305 is connected to first Fabric Interface 101, and heat is situated between
Matter delivery trunk 306 is connected to the second Fabric Interface 102, and phase change heat storage tank 3 realizes the circulation of heat input medium.The energy stage is being released,
Thermal medium inputs general pipeline 305 and is connected to third Fabric Interface 201, and thermal medium delivery trunk 306 is connected to the 4th Fabric Interface 202, phase
Become the circulation that heat storage tank 3 realizes thermal output medium.The thermal medium input general pipeline 305 and thermal medium delivery trunk 306 include
Pressure pump 307,308 and flow control valve 309,310.The flow control valve 309,310 is respectively used to open or be closed
Thermal medium input general pipeline 305 perhaps thermal medium delivery trunk 306 and control heat input medium or thermal output medium into
The flow of the phase change heat storage tank 3 out.
The phase change heat storage tank 3 includes several phase-transition heat-storage units, such as Fig. 1 shows two phase-transition heat-storage unit 3A
With 3B.There is a thermal medium inlet branch and a thermal medium to export branch pipe, such as phase transformation by each phase-transition heat-storage unit 3A, 3B
The thermal medium inlet branch 311 and thermal medium of thermal storage unit 3A exports branch pipe 312.The every thermal medium inlet branch 311 connects
Lead to the thermal medium input general pipeline 305, the every thermal medium output branch pipe 312 is connected to the thermal medium delivery trunk 306.In
Perhaps heat release stage heat input medium or thermal output medium through every thermal medium inlet branch and thermal medium export branch pipe for accumulation of heat
Each phase-transition heat-storage unit is passed in and out, realizes circulation.The thermal medium inlet branch and thermal medium of each phase-transition heat-storage unit are defeated
Branch pipe is respectively provided with flow control valve, such as flow control valve 313,314 out, is situated between for controlling heat input medium or thermal output
Matter passes in and out the uninterrupted of each phase-transition heat-storage unit.
As shown in Figures 2 and 3, each phase-transition heat-storage unit includes energy-storage box 301, phase-change material 302, at least two groups
If heat pipe 303 and dry plate pipe wing 304.Wherein the arrival end of every group of heat pipe 303 is connected to the thermal medium inlet branch, and every
The outlet end of group heat pipe 303 is connected to the thermal medium and exports branch pipe.Heat pipe 303 described in every group is bent in the energy-storage box 301
Extend；Heat pipe 303 has more heat pipe the transverse tube 303A, the heat pipe transverse tube 303A being parallel to each other to pass perpendicularly through the pipe wing 304,
The outside wall surface of every pipe wing 304 and every heat pipe transverse tube 303A is had a common boundary；By setting between more heat pipe transverse tube 303A of heat pipe 303
Set the heat pipe homogeneous tube that the heat pipe curved tube 303B in end is connected to become a detour.Heat input is situated between in two groups of adjacent heat pipes 303
Matter or the flow direction of thermal output medium on the contrary, as shown by arrows in Figure 3, be conducive to heat overall distribution in energy-storage box 301 in this way
Uniformly.If the dry plate pipe wing 304 is located in parallel to one another in the energy-storage box 301, every pipe wing 304 and every group of heat pipe
303 outside wall surface is had a common boundary；Space in the energy-storage box 301 is divided into multiple filling regions by the pipe wing 304, is filled out in region
Fill phase-change material.Heat pipe 303 and pipe wing 304 pass through phase-change material 302 by heat transfer and the progress heat exchange of phase-change material 302
Solid-liquid phase change realize thermal energy storage and release.As Parameters Optimal Design, heat pipe 303 uses soft titanium stainless steel tube, tube wall
Thickness 0.5-0.7mm, preferably 0.6mm, bore 12-16.5mm, preferably 14.8mm.Every pipe wing 304 be it is integrally formed, prolong
Stretch the inner space that range is distributed in entire energy-storage box 301；Pipe wing 304 with a thickness of 0.1-0.3mm, preferably 0.2mm, and phase
The spacing of adjacent two panels pipe wing 304 is 2-6mm, preferably 5mm.Pipe wing 304 uses stainless steel fin；Its heat transfer parameter is compared to existing
It only with heat pipe structure is 3-11 times in technology.What the adjacent heat pipe transverse tube of each group heat pipe 303 and adjacent pipe wing 304 surrounded fills out
It fills in space, is additionally provided with heat exchange grid 303C, the heat exchange grid 303C is embedded in the phase-change material 302, is used for
Thermal energy is conducted inside the phase-change material 302, phase-change material is overcome to easily cause heat distribution uneven because heating conduction itself is poor
Defect, it is described heat exchange grid 303C mesh section be honeycomb.As shown in figure 4, pipe wing 4 with belong to each of one group of heat pipe
Heat pipe transverse tube 3A interfaces, and the longitudinal pitch of adjacent two heat pipe transverse tubes 3A of this group of heat pipe 3 is in region longitudinally in each
L；And in region longitudinally in each, the thickness of the intersection pipe wing of pipe wing 4 and every heat pipe transverse tube 3A is minimum；With pipe wing 4
In the longitudinal region centered on the intersection of every heat pipe transverse tube, the spacing L's that is extended respectively to upper and lower two sides
At 1/2, the thickness of pipe wing is gradually increased.Every pipe wing 4 is integrally formed, and there are supply the heat pipe in the intersection
The through-hole H that transverse tube 3A is passed through, centered on H, the spacing L extended respectively to upper and lower two sides with pipe wing 4 1/2 at, pipe wing
Thickness gradually increase, for example, intersection pipe wing is with a thickness of 0.1mm, and at 1/2 spacing L pipe wing with a thickness of 0.3mm, and
As section thickness increases, pipe wing outside wall surface is in cambered surface shown in Fig. 4.Since the heating conduction of pipe wing itself is higher than the phase
Become material, therefore, can suitably be thickened in the thickness of the pipe wing far from the heat pipe position pair, thus for far from the heat pipe
Phase-change material conduct more heats.In addition, it is to influence heat exchange efficiency that phase-change material, which condenses into dirty phenomenon in heat pipe outer wall,
One big factor；By the non-homogeneous arc surfaced tube wing of above-mentioned progressive thickness, may be implemented it is non-homogeneous expand with heat and contract with cold, closer to heating pipe
The thermal expansion and cold contraction effect of wing is more obvious, and can be played the role of stirring to condensation phase change material and is detached from；Under liquid phase state, phase transformation
Material carries out convection current between heat pipe and pipe wing, and the non-uniform shapes of tube wall are conducive to the convection current in intersection, so that having tied
Brilliant phase-change material can be removed by convection current, avoid being bonded in heat pipe and fin surface for a long time and influencing to conduct heat.
In the entire phase transition process of phase-change material, early period with the gradually thawing of phase-change material, increases leading for convection current
Heat effect, therefore accumulation of heat increment is bigger；Later period, accumulation of heat speed can gradually reduce with the decline of the temperature difference, until saturation.Such as figure
Shown in 5, the heat storage capacity of each phase-transition heat-storage unit of 6 real-time monitoring of thermal control device, according to each phase-transition heat-storage
The heat storage capacity of unit turns on or off its thermal medium inlet branch and thermal medium output branch pipe, and according to described each
The heat storage capacity of phase-transition heat-storage unit controls the flow of its thermal medium inlet branch and thermal medium output branch pipe.
The thermal control device 6 specifically includes: accumulation of energy monitoring unit 601, storage volume measuring and calculating unit 602, flow are set
Set unit 603.Wherein, one group of accumulation of energy monitoring unit 601 is arranged in each phase-transition heat-storage unit, and every group of accumulation of energy monitoring unit 601 wraps
Include several phase transformation monitors 604.The phase transformation monitor 604 includes high temperature resistant heat insulation transparent pipe 604A, and is arranged in institute
The miniature webcam 604B in thermostable transparent pipe is stated, the high temperature resistant heat insulation transparent pipe 604A setting is in the phase-change material
Portion；And the miniature webcam 604B is sealed in the inside of the high temperature resistant heat insulation transparent pipe, for obtaining the phase transformation material
Phase transition patter image inside material.The phase transformation monitor 604 is arranged in inside the phase-change material of filling, for obtaining the phase
Become the phase transition patter image of material；Storage volume measuring and calculating unit 602 is used to obtain one group of phase in real time from every group of accumulation of energy monitoring unit
Deformation states image, by determining each phase-transition heat-storage list for this group of phase transition patter image and the phase transition patter template matching prestored
The heat storage capacity of member；The flow set unit 603 determines each according to the heat storage capacity of each phase-transition heat-storage unit
The available surplus of phase-transition heat-storage unit, and according to the mapping relations of pre-stored available surplus and flow velocity, it determines for each
The flow control signal of phase-transition heat-storage unit.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of for steam power plant and the hold over system of distributed trilogy supply gas turbine characterized by comprising heat source returns
Road, heat input circuit, heat output loop, phase change heat storage tank, with hot loop and thermal control device；
The heat source loop is the waste heat gas output loop of steam power plant or distributed trilogy supply；Described with hot loop is thermoelectricity
The heating and refrigerating circuit of factory's heating network or distributed trilogy supply；
The heat input circuit has the first Fabric Interface and the second Fabric Interface；First Fabric Interface introduces heat input and is situated between
Matter；Heat input medium enters the phase change heat storage tank by the first Fabric Interface and carries out heat exchange, and the heat of carrying is stored
In the phase change heat storage tank, heat source loop then is returned to from the phase change heat storage tank by the second Fabric Interface；The heat output
Circuit has third Fabric Interface and the 4th Fabric Interface, and third Fabric Interface introduces thermal output medium from hot loop；Institute
It states thermal output medium and phase change heat storage tank progress heat exchange is entered by third Fabric Interface, heat is obtained, then from institute
Phase change heat storage tank is stated to return to by the 4th Fabric Interface with hot loop, the heat of output phase change heat storage tank storage；
Also, the phase change heat storage tank includes thermal medium input general pipeline and thermal medium delivery trunk；The thermal medium inputs general pipeline
First Fabric Interface or third Fabric Interface are selectively communicated with, and the thermal medium delivery trunk selectively connects
Lead to second Fabric Interface or the 4th Fabric Interface；The phase change heat storage tank includes several phase-transition heat-storage units, each
There is phase-transition heat-storage unit a thermal medium inlet branch and a thermal medium to export branch pipe, the every thermal medium inlet branch
It is connected to the thermal medium input general pipeline, the every thermal medium output branch pipe is connected to the thermal medium delivery trunk；
If each phase-transition heat-storage unit includes energy-storage box, phase-change material, at least two groups heat pipe and dry plate pipe wing；It is wherein every
The arrival end of group heat pipe is connected to the thermal medium inlet branch, and the outlet end of every group of heat pipe is connected to the thermal medium output branch
Pipe；Heat pipe described in every group is bent extension in the energy-storage box；If the dry plate pipe wing is located in parallel to one another in the energy storage
In case, the outside wall surface of every pipe wing and every group of heat pipe is had a common boundary；Space in the energy-storage box is divided into multiple fill out by the pipe wing
Region is filled, fills phase-change material in region；Pipe wing and each heat pipe transverse tube interfaces for belonging to one group of heat pipe, and longitudinally in each
The longitudinal pitch of adjacent two heat pipe transverse tubes of this group of heat pipe is L in region；And in region longitudinally in each, pipe wing with every
The thickness of the intersection pipe wing of heat pipe transverse tube is minimum；With pipe wing in the longitudinal region with the boundary with every heat pipe transverse tube
Centered on place, the spacing L extended respectively to upper and lower two sides 1/2 at, the thickness of pipe wing gradually increases；And each phase transformation stores
Phase-change material is filled in hot cell energy-storage box, and the storage and release of thermal energy are realized by the solid-liquid phase change of phase-change material；
The thermal control device is used for the heat storage capacity of each phase-transition heat-storage unit of real-time monitoring, according to each phase-transition heat-storage
The heat storage capacity of unit turns on or off its thermal medium inlet branch and thermal medium output branch pipe, and according to described each
The heat storage capacity of phase-transition heat-storage unit controls the flow of its thermal medium inlet branch and thermal medium output branch pipe.
2. according to claim 1 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
Thermal medium inlet branch and thermal medium the output branch pipe of each phase-transition heat-storage unit all have flow control valve, the flow control
Valve be used to open or be closed the thermal medium inlet branch perhaps thermal medium output branch pipe and control heat input medium or
Thermal output medium passes in and out the flow of the phase-transition heat-storage unit；And the flow control valve is according to the flow of thermal control device
It controls signal and opens, is closed and controls flow.
3. according to claim 2 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
The thermal control device includes accumulation of energy monitoring unit, storage volume measuring and calculating unit, flow set unit；Wherein, each phase transformation
One group of accumulation of energy monitoring unit is arranged in thermal storage unit, and every group of accumulation of energy monitoring unit includes several phase transformation monitors, the phase transformation prison
It surveys device to be arranged in inside the phase-change material of filling, for obtaining the phase transition patter image of the phase-change material；Storage volume measuring and calculating
Unit is used to obtain one group of phase transition patter image in real time from every group of accumulation of energy monitoring unit, by by this group of phase transition patter image and in advance
The phase transition patter template matching deposited determines the heat storage capacity of each phase-transition heat-storage unit；The flow set unit according to
The heat storage capacity of each phase-transition heat-storage unit determines the available surplus of each phase-transition heat-storage unit, and according to pre-stored
The mapping relations that surplus and flow velocity can be used, determine the flow control signal for being directed to each phase-transition heat-storage unit.
4. according to claim 3 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
The phase transformation monitor includes high temperature resistant heat insulation transparent pipe, and the miniature webcam being arranged in the thermostable transparent pipe,
The high temperature resistant heat insulation transparent pipe is arranged inside the phase-change material；And the miniature webcam is sealed in the high temperature resistant
The inside of heat-insulation transparent pipe, for obtaining the phase transition patter image inside the phase-change material.
5. according to claim 1 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
Steam water heat exchanger is steamed in the first Fabric Interface connection in the heat input circuit, and the steam extracted from steam power plant's intermediate pressure cylinder is logical
It crosses the steaming steam water heat exchanger to exchange heat with the water in heat input circuit, hot water is as heat input medium by after heat exchange
One Fabric Interface inputs the phase change heat storage tank and carries out energy storage, and heat input medium is flowed back into described by the second Fabric Interface after energy storage
Steam steam water heat exchanger.
6. according to claim 1 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
Steam water heat exchanger is steamed in the first Fabric Interface connection in the heat input circuit, from the waste heat boiler of distributed combined supply system
The steam of extraction is exchanged heat by the steaming steam water heat exchanger with the water in heat input circuit, and hot water is as warm after heat exchange
Input medium inputs the phase change heat storage tank by the first Fabric Interface and carries out energy storage, and heat input medium is connect by the second exchange after energy storage
Mouth flows back into the steaming steam water heat exchanger.
7. according to claim 6 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
The third Fabric Interface connection combining valve of the heat output loop, the combining valve are separately connected heating network circuit and bromination
Lithium-absorbing refrigeration machine circuit；The phase change heat storage tank is entered by third Fabric Interface as thermal output medium and carries out heat exchange,
Obtain heat；4th Fabric Interface connects shunt valve, the thermal output medium by the 4th Fabric Interface by shunt valve into
Enter heating network circuit and lithium bromide absorption refrigeration machine circuit.
8. according to claim 7 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
The third Fabric Interface of the heat output loop connects the return pipe of heating network, heating network return water conduct by the combining valve
Thermal output medium enters the phase change heat storage tank by third Fabric Interface and carries out heat exchange, obtains heat；The heat output
4th Fabric Interface in circuit connects the upper hose of heating network by the shunt valve, and the heating network return water is by four Fabric Interfaces
Enter heating network from the phase change heat storage tank.
9. according to claim 7 for steam power plant and the hold over system of distributed trilogy supply gas turbine, which is characterized in that
The third Fabric Interface of the heat output loop connects the generator of lithium bromide absorption refrigeration machine by the combining valve；Bromination
The heat medium water of lithium-absorbing refrigeration machine enters the phase change heat storage tank by third Fabric Interface as thermal output medium and carries out heat friendship
It changes, obtains heat；4th Fabric Interface of the heat output loop connects lithium bromide absorption refrigeration machine by the shunt valve
Generator, the heat medium water enters the generation of lithium bromide absorption refrigeration machine by the 4th Fabric Interface from the phase change heat storage tank
Device.
10. existing according to claim 1 for steam power plant and the hold over system of distributed trilogy supply gas turbine, feature
In the phase-transition heat-storage unit is provided with heat exchange grid in the filling space that heat pipe and pipe wing surround.
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| CN201810006222 | 2018-01-03 | ||
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| CN109631643B (en) * | 2018-10-26 | 2023-12-26 | 江苏昂彼特堡能源集团有限公司 | Phase change energy storage system based on hydrologic cycle |
| CN110762588B (en) * | 2019-10-31 | 2021-04-02 | 中船九江锅炉有限公司 | Combined heating system of fuel auxiliary boiler and waste gas boiler |
| CN113137650B (en) * | 2021-04-16 | 2022-06-24 | 浙江大学 | Steam heat network system regulation and control method combined with distributed power generation |
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| GB2273972B (en) * | 1992-11-14 | 1996-05-01 | Format Draw Limited | A water heating arrangement |
| CN201093907Y (en) * | 2007-07-05 | 2008-07-30 | 上海海事大学 | Novel phase change type heat tube heat accumulator |
| CN201935289U (en) * | 2010-12-09 | 2011-08-17 | 许益凡 | Intelligent high-efficiency heat-storage-type solar water heater |
| CN202267113U (en) * | 2011-09-14 | 2012-06-06 | 北京中科华誉能源技术发展有限责任公司 | Combined gas-steam cycle cooling, heating and power system with zero energy loss rate for heat and power plant |
| CN104180418A (en) * | 2014-08-13 | 2014-12-03 | 华电电力科学研究院 | Direct heat accumulation system for heat supply network and heat accumulation and release method for direct heat accumulation system |
| CN106958849B (en) * | 2017-03-29 | 2020-05-26 | 哈尔滨工业大学 | Distributed double-side combined heat storage device of heating power station |
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