CN108488876A - A kind of steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device - Google Patents
A kind of steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device Download PDFInfo
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- CN108488876A CN108488876A CN201810202507.3A CN201810202507A CN108488876A CN 108488876 A CN108488876 A CN 108488876A CN 201810202507 A CN201810202507 A CN 201810202507A CN 108488876 A CN108488876 A CN 108488876A
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- 238000005338 heat storage Methods 0.000 title claims abstract description 128
- 238000005086 pumping Methods 0.000 title claims description 9
- 230000008859 change Effects 0.000 claims abstract description 42
- 238000009825 accumulation Methods 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 16
- 230000005619 thermoelectricity Effects 0.000 claims abstract description 6
- 239000012071 phase Substances 0.000 claims description 87
- 239000004744 fabric Substances 0.000 claims description 39
- 239000012782 phase change material Substances 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 28
- 230000009466 transformation Effects 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000004146 energy storage Methods 0.000 claims description 23
- 230000007704 transition Effects 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 9
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 6
- 238000010025 steaming Methods 0.000 claims description 5
- 239000007791 liquid phase Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 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
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 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
- 230000000007 visual effect Effects 0.000 description 1
- 239000002918 waste heat Substances 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
- 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
Abstract
The present invention provides a kind of steam power plant's intermediate pressure cylinders to be evacuated phase-transition heat-storage peak adjusting device.The device includes heat input circuit, heat output loop and phase change heat storage tank.The device is evacuated from the cogeneration units intermediate pressure cylinder of steam power plant, heat exchange is to heat input medium and is introduced into phase-change thermal storage case, by adjusting accumulation of heat and the heat release of heat-storing device, realizes and surplus heat is stored in the peak of power consumption stage and is supplemented with the thermal energy of hot peak phase；The present invention breaks the electric heating rigidity coupled modes of cogeneration units " electricity determining by heat ", realizes the thermoelectricity decoupling of cogeneration units, can adjust with hot peak with the time difference on hot peak, raising Integrated Energy efficiency.
Description
Technical field
The present invention relates to energy technology field, more particularly to a kind of steam power plant's intermediate pressure cylinder is evacuated phase-transition heat-storage peak adjusting device.
Background technology
Steam power plant realizes cogeneration of heat and power, while generating and externally exporting power supply and thermal energy, can ensure town and country electricity consumption simultaneously
With the demand with heat.
But the peak basic synchronization of the production electric energy and thermal energy of steam power plant, and town and country heat and peak of power consumption are to be staggered
's.In order to ensure power supply when peak of power consumption, with the increasing of electric energy production, heat output will be more than actual heat at this time
Demand.If extra heat loses in vain, it is clear that cause huge energy waste.On the other hand, at the night for the hot season
Between, supply load period at a low ebb, but heating demand is in peak time, and it is hot at this time to ensure the demand of heating demand
Cogeneration units in power plant are higher than practical power demand, but electric energy cannot be extensive all in high output operating status
Storage, therefore there is also the not high problems of energy efficiency.
As it can be seen that facing above-mentioned actual conditions, it is necessary to realize the accumulation of heat peak regulation towards steam power plant by thermal energy energy storage.Also
It is that, in peak of power consumption, will get up with the extra thermal energy storage of output；And when night is arrived with hot peak, pass through release
The thermal energy of storage makes up the deficiency of heat demand.
Invention content
To meet above-mentioned demand of the existing technology, the present invention provides a kind of steam power plant's intermediate pressure cylinders to be evacuated phase-transition heat-storage
Peak adjusting device.The present invention is evacuated from the cogeneration units intermediate pressure cylinder of steam power plant, and heat exchange is to heat input medium and is introduced into phase transformation
Heat-storing device, by adjust heat-storing device accumulation of heat and heat release, realize the peak of power consumption stage to surplus heat store and
It is supplemented with the thermal energy of hot peak phase；The present invention breaks the electric-thermal rigidity coupled modes of cogeneration units " electricity determining by heat ", real
The thermoelectricity decoupling of existing cogeneration units, can adjust with hot peak with the time difference on hot peak, raising Integrated Energy efficiency.Separately
Outside, goal of the invention of the invention further include realize phase-transition heat-storage peak regulation system topological structure and its switching mode, heat transfer efficiency,
Improvement in terms of intelligent control precision.
A kind of steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device, the device include heat input circuit, heat output
Circuit and phase change heat storage tank；
The heat input circuit includes steaming steam water heat exchanger, and the steam extracted from steam power plant's intermediate pressure cylinder passes through described
It steams steam water heat exchanger to exchange heat with the water in heat input circuit, hot water is as heat input medium after heat exchange；The heat is defeated
Also there is entry loop the first Fabric Interface and the second Fabric Interface, heat input medium to enter the phase by the first Fabric Interface
Become heat storage tank and carry out heat exchange, the heat of carrying is stored in the phase change heat storage tank, then by the second Fabric Interface from institute
It states phase change heat storage tank and returns to heat input circuit；The heat output loop obtains heating network return water, as thermal output medium；Institute
Stating heat output loop, there is third Fabric Interface and the 4th Fabric Interface, the heating network return water to pass through third Fabric Interface
Heat exchange is carried out into the phase change heat storage tank, obtains heat, then by the 4th Fabric Interface from the phase change heat storage tank
Heat output loop is returned to, the heat that phase change heat storage tank stores is carried to heating network；
Also, the phase change heat storage tank includes thermal medium input manifold and thermal medium delivery trunk；The thermal medium input
Manifold 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 manifold, 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
Go out 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 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 fill phase transformation 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.
Preferably, the thermal medium input manifold and thermal medium delivery trunk include compression pump and flow control
Valve；The flow control valve, which is used to open, is either closed the thermal medium input manifold or thermal medium delivery trunk, and control
Heating input medium or thermal output medium pass in and out the flow of the phase change heat storage tank.
Preferably, steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device includes heat control unit；The heat
Heat storage capacity of the control unit according to the phase change heat storage tank is measured, flow control signal is set, and is sent to the flow
Control valve makes the flow control valve be controlled described in heat input medium or the disengaging of thermal output medium according to the flow control signal
The flow of phase change heat storage tank.
Preferably, the thermal medium inlet branch and thermal medium output branch pipe difference that each phase-transition heat-storage unit has
With controlled valve, the heat control unit is according to the heat storage capacity of each phase-transition heat-storage unit, setting unit switch
Signal, and be sent to the controlled valve of the phase-transition heat-storage unit, make the controlled valve opened according to the unit switch signal or
Person closes thermal medium inlet branch and thermal medium exports branch pipe.
Preferably, the heat control unit specifically includes：Accumulation of energy monitoring unit, storage volume measuring and calculating unit, control
Signal generation unit；Wherein, one group of accumulation of energy monitoring unit is arranged in each phase-transition heat-storage unit, if every group of accumulation of energy monitoring unit includes
Dry phase transformation monitor, the phase transformation monitor is arranged inside the phase-change material of filling, for obtaining the phase-change material
Phase transition patter 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,
By by this group of phase transition patter image and the phase transition patter template matching to prestore, determining the heat storage of each phase-transition heat-storage unit
Capacity；The control signal generation unit is according to the heat storage capacity of each phase-transition heat-storage unit, and setting is for each phase transformation
The unit switch signal of thermal storage unit, and the setting flow control signal.
Preferably, the phase transformation monitor includes high temperature resistant heat insulation transparent pipe, and is arranged in the thermostable transparent
Miniature webcam in pipe, the high temperature resistant heat insulation transparent pipe are arranged inside the phase-change material；And the miniature video camera
Head is sealed in the inside of the high temperature resistant heat insulation transparent pipe, for obtaining the phase transition patter image inside the phase-change material.
Preferably, the heat control unit determines phase-transition heat-storage according to the heat storage capacity of phase-transition heat-storage unit
The available surplus of case entirety, and according to the mapping relations of pre-stored available surplus and flow velocity, determine the flow control letter
Number.
Preferably, the heat control unit includes graphical human-machine, and the graphical human-machine is every for showing
The heat storage capacity of a phase-transition heat-storage unit.
Preferably, the heat input medium is also input to Gateway Station in Heating Network heat exchanger by the heat input circuit, in institute
It states Gateway Station in Heating Network heat exchanger and the heating network return water of heat output loop carries out heat exchange.
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 energy storage device, so as to generate steam power plant when producing peak
Thermal reservoir in the apparatus, and is discharged after for use hot peak arrival, to play adjusting heat supply peak and use heat height
The effect of peak time difference, the present invention devise the topological switching circuit for realizing heat peak regulation.The present invention uses phase-change accumulation energy, energy storage
Density is high, and heat is mainly distributed near phase transition temperature, therefore practical utilize is easier.The present invention is to phase-changing energy-storing case
Structure improvement has been carried out, its thermal efficiency is enhanced.The present invention relates to the energy accumulating state monitoring of accumulation of energy phase transformation case, heat capacity
Mechanism is assessed and automatically controlled, intelligent, visual precision controllability is realized.
Description of the drawings
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 steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device overall structure diagram provided by the invention；
Fig. 2 is phase-changing energy-storing unit overall structure 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 steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device heat control schematic diagram provided by the invention；
Fig. 6 is phase transformation monitor structural schematic diagram provided by the invention.
Specific implementation mode
To keep the purpose, technical scheme and advantage that the present invention is 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.
As shown in Figure 1, the present invention provides a kind of steam power plant's intermediate pressure cylinders to be evacuated phase-transition heat-storage peak adjusting device.The present invention provides
A kind of steam power plant's intermediate pressure cylinder is evacuated phase-transition heat-storage peak adjusting device.The present invention takes out from the cogeneration units intermediate pressure cylinder of steam power plant
Gas is introduced into phase change material device after heat exchange, by adjusting accumulation of heat and the heat release of heat-storing device, realizes in the peak of power consumption stage pair
Surplus heat is stored and is supplemented with the thermal energy of hot peak phase；The present invention breaks the electricity of cogeneration units " electricity determining by heat "
The one rigid coupled modes of heat realize the thermoelectricity decoupling of cogeneration units, can adjust with hot peak and with the time difference on hot peak,
Improve Integrated Energy efficiency.
Referring to Fig. 1, the overall structure of steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device of the present invention, the dress are shown
Set overall see including heat input circuit 1, heat output loop 2 and phase change heat storage tank 3.
The heat input circuit 1 includes steaming steam water heat exchanger 103, and the steam extracted from steam power plant's intermediate pressure cylinder passes through
The steaming steam water heat exchanger 103 exchanges heat with the water in heat input circuit 1, and hot water is as heat input medium after heat exchange；Institute
Stating heat input circuit, also there is the first Fabric Interface 101 and the second Fabric Interface 102, heat input medium to be exchanged by first
Interface 101 enters the phase change heat storage tank 3 and carries out heat exchange, and the heat of carrying is stored in the phase change heat storage tank 3, is then led to
It crosses the second Fabric Interface 102 and returns to heat input circuit 1 from the phase change heat storage tank 3, and reentered through heat input circuit 1
Steam water heat exchanger 103 is steamed, to carry out the cycle of energy storage.
The heat output loop 2 obtains heating network return water, as thermal output medium；The heat output loop 2 has
Third Fabric Interface 201 and the 4th Fabric Interface 202, the heating network return water pass through described in the entrance of third Fabric Interface 201
Phase change heat storage tank 3 carries out heat exchange, obtains thermal temperature and increases, and is then stored from the phase transformation by the 4th Fabric Interface 202
Hot tank 3 returns to heat output loop 2, and the heat that phase change heat storage tank 3 stores is carried to heating network.
The heat input circuit 1 will also pass through the steaming steam water heat exchanger 103 and the institute after intermediate pressure cylinder steam heat-exchanging
It states heat input medium and is input to Gateway Station in Heating Network heat exchanger 4, in the heat supply of the Gateway Station in Heating Network heat exchanger 4 and heat output loop 2
Net return water carries out heat exchange, and heating network return water obtains heat through heat exchange, carries heat to heating network.
It is formed by heat in peak of power consumption, a part enters Gateway Station in Heating Network heat exchanger 4, meets real-time heat supply needs,
And can enter 3 energy storage of phase change heat storage tank through heat input circuit 1 higher than the heat of heating network actual demand, prevent waste heat
It scatters and disappears.And entering heating network through heat output loop 2 with the heat of hot peak period, phase change heat storage tank 3, to supplement thermoelectricity
Factory's heat production is insufficient.Therefore, the present invention realizes the thermoelectricity decoupling of cogeneration units, can adjust with hot peak and with hot peak
The time difference improves Integrated Energy efficiency.
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 in the phase transformation stage, generate
One wider temperature platform, the appearance of this platform so that we can obtain a metastable constant temperature time.
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.Coordinate heating network temperature range, the phase-change material selected by the present invention that can adopt
Use magnesium nitrate hexahydrate.
Such as Fig. 1, the phase change heat storage tank 3 includes thermal medium input manifold 305 and thermal medium delivery trunk 306；The heat
Medium input manifold 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 manifold 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 cycle of heat input medium.The energy stage is being released,
Thermal medium inputs manifold 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 cycle that heat storage tank 3 realizes thermal output medium.The thermal medium input manifold 305 and thermal medium delivery trunk 306 include
Compression 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 manifold 305 either thermal medium delivery trunk 306 and control heat input medium or thermal output medium into
Go out the flow of the phase change heat storage tank 3.Opening, closing and the flow of flow control valve 309,310 are by the heat introduced below
Control unit determines.
The phase change heat storage tank 3 shows two phase-transition heat-storage unit 3A including several phase-transition heat-storage units, such as Fig. 1
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
The logical thermal medium inputs manifold 305, and the every thermal medium output branch pipe 312 is connected to the thermal medium delivery trunk 306.
Either heat release stage heat input medium or thermal output medium export branch pipe through every thermal medium inlet branch and thermal medium for accumulation of heat
Each phase-transition heat-storage unit is passed in and out, realizes cycle.The thermal medium inlet branch and thermal medium of each phase-transition heat-storage unit are defeated
Go out branch pipe and be respectively provided with controlled valve, such as controlled valve 313,314, under the control of heat control unit open or
Close 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.The arrival end of wherein every group 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.The bending in the energy-storage box 301 of heat pipe 303 described in every group
Extend；Heat pipe 303 has more heat pipe the transverse tube 303A, the heat pipe transverse tube 303A being mutually parallel 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 carries out heat exchange with pipe wing 304 by heat transfer and phase-change material 302, passes through 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 is integrally formed, is prolonged
Stretch the inner space that range is distributed in entire energy-storage box 301；The thickness of pipe wing 304 is 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
Only with heat pipe structure it 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 in the inside of the phase-change material 302, overcomes phase-change material because heat conductivility itself is poor to easily cause heat distribution uneven
Defect, the mesh section of the heat exchange grid 303C is cellular.As shown in figure 4, pipe wing 4 and belonging 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
By the spacing L's that centered on intersection with every heat pipe transverse tube, is extended respectively to upper and lower both sides in the longitudinal region
At 1/2, the thickness of pipe wing gradually increases.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 both sides with pipe wing 4 1/2 at, pipe wing
Thickness gradually increase, for example, intersection pipe wing thickness be 0.1mm, and 1/2 spacing L at pipe wing thickness be 0.3mm, and
As section thickness increases, pipe wing outside wall surface is in cambered surface shown in Fig. 4.Since the heat conductivility 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, to 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 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 effect of expanding with heat and contract with cold of wing is more apparent, can play the role of stirring to condensation phase change material and be 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 have 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.
As shown in figure 5, steam power plant's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device includes heat control unit 5.In phase
Become in the entire phase transition process of material, early period with the gradually thawing of phase-change material, increases the conductive force of convection current, therefore store
Heat gain is bigger；Later stage, accumulation of heat speed can gradually reduce with the decline of the temperature difference, until saturation.The heat control unit 5
The heat storage capacity accumulated according to the phase change heat storage tank is arranged flow control signal, and is sent to the flow control
Valve 309,310 processed makes the flow control valve 309,310 control heat input medium or thermal output according to the flow control signal
Medium passes in and out the flow of the phase change heat storage tank.The heat control unit 5 is deposited also according to the heat of each phase-transition heat-storage unit
Capacity, setting unit switching signal are stored up, and is sent to the controlled valve 313,314 of the phase-transition heat-storage unit, makes the switch valve
Door 313,314 opens or closes the thermal medium inlet branch and thermal medium output branch of each unit according to the unit switch signal
Pipe.
The heat control unit 5 specifically includes：Accumulation of energy monitoring unit 501, storage volume measuring and calculating unit 502, control letter
Number generation unit 503.Wherein, one group of accumulation of energy monitoring unit 501 is set inside each phase-transition heat-storage unit, and every group of accumulation of energy monitoring is single
Member 501 includes several phase transformation monitors 504.The phase transformation monitor 504 is arranged inside the phase-change material of filling, for obtaining
Take the phase transition patter image of the phase-change material.As shown in fig. 6, the phase transformation monitor 504 includes high temperature resistant heat insulation transparent pipe
504A, and the miniature webcam 504B that is arranged in the thermostable transparent pipe, the high temperature resistant heat insulation transparent pipe 504A are set
It sets inside the phase-change material；And the miniature webcam 504B is sealed in the interior of the high temperature resistant heat insulation transparent pipe 504A
Portion, for obtaining the phase transition patter image inside the phase-change material.Fig. 5 is returned to, storage volume is calculated unit 502 and is used for from every
Group accumulation of energy monitoring unit 501 obtains one group of phase transition patter image in real time, by by this group of phase transition patter image and the phase transformation to prestore
Morphological template compares, and determines the heat storage capacity of each phase-transition heat-storage unit.The control signal generation unit 503 is according to every
The heat storage capacity of a phase-transition heat-storage unit, setting are directed to the unit switch signal of each phase-transition heat-storage unit, when phase transformation stores
The heat storage capacity of hot cell has reached the controlled valve that saturation then closes the unit.The control signal generation unit
503 also according to each phase-transition heat-storage unit heat storage capacity, determine the available surplus of phase change heat storage tank entirety, and according to
The mapping relations of pre-stored available surplus and flow velocity, determine the flow control signal.As it can be seen that heat control unit 5 in order to
Intelligent precision controllability is promoted, based on monitoring transition, adjusts flow status in the heat pipe of each phase-transition heat-storage unit,
To make the heat storage capacity of heat input, delivery efficiency and phase-change material match.The heat control unit further includes figure
Man-machine interface 505, the graphical human-machine 505 are used to show the heat storage capacity of each phase-transition heat-storage unit.
It should be noted that：In the accompanying drawings, from beginning to end same or similar label 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, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts,
It shall fall within the protection scope of the present invention.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of the claims
It is accurate.
Claims (10)
1. a kind of steam power plant's intermediate pressure cylinder is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the device include heat input circuit,
Heat output loop and phase change heat storage tank；
The heat input circuit includes steaming steam water heat exchanger, and the steam extracted from steam power plant's intermediate pressure cylinder passes through the steam-
Water- to-water heat exchanger exchanges heat with the water in heat input circuit, and hot water is as heat input medium after heat exchange；The heat inputs back
Also there is the first Fabric Interface and the second Fabric Interface, heat input medium to be stored into the phase transformation by the first Fabric Interface on road
Hot tank carries out heat exchange, and the heat of carrying is stored in the phase change heat storage tank, then by the second Fabric Interface from the phase
Become heat storage tank and returns to heat input circuit；The heat output loop obtains heating network return water, as thermal output medium；The heat
Measuring output loop, there is third Fabric Interface and the 4th Fabric Interface, the heating network return water to be entered by third Fabric Interface
The phase change heat storage tank carries out heat exchange, obtains heat, is then returned to from the phase change heat storage tank by the 4th Fabric Interface
Heat output loop carries the heat that phase change heat storage tank stores to heating network；
Also, the phase change heat storage tank includes thermal medium input manifold and thermal medium delivery trunk；The thermal medium inputs manifold
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 manifold, 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；And phase-change material is filled in each phase-transition heat-storage unit energy-storage box,
The storage and release of thermal energy are realized by the solid-liquid phase change of phase-change material.
2. steam power plant's intermediate pressure cylinder according to claim 1 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the heat is situated between
It includes compression pump and flow control valve that matter, which inputs manifold and thermal medium delivery trunk,；The flow control valve be used to open or
Person be closed thermal medium input manifold either thermal medium delivery trunk and control heat input medium or thermal output medium into
Go out the flow of the phase change heat storage tank.
3. steam power plant's intermediate pressure cylinder according to claim 2 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the thermoelectricity
Factory's intermediate pressure cylinder pumping phase-transition heat-storage peak adjusting device includes heat control unit；The heat control unit is according to the phase-transition heat-storage
The heat storage capacity of case is arranged flow control signal, and is sent to the flow control valve, make the flow control valve according to
The flow control signal controls heat input medium or thermal output medium passes in and out the flow of the phase change heat storage tank.
4. steam power plant's intermediate pressure cylinder according to claim 3 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that each described
Thermal medium inlet branch and thermal medium the output branch pipe that phase-transition heat-storage unit has are respectively provided with controlled valve, the heat control
Unit is sent to the phase-transition heat-storage list according to the heat storage capacity of each phase-transition heat-storage unit, setting unit switching signal
The controlled valve of member makes the controlled valve open or close thermal medium inlet branch and heat according to the unit switch signal and is situated between
Matter exports branch pipe.
5. steam power plant's intermediate pressure cylinder according to claim 4 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the heat
Control unit specifically includes：Accumulation of energy monitoring unit, storage volume measuring and calculating unit, control signal generation 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 inside the phase-change material of filling, the phase transition patter image for obtaining the phase-change material；Storage volume is calculated
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 control signal generation unit
According to the heat storage capacity of each phase-transition heat-storage unit, setting is directed to the unit switch signal of each phase-transition heat-storage unit, with
And the setting flow control signal.
6. steam power plant's intermediate pressure cylinder according to claim 5 is evacuated phase-transition heat-storage peak adjusting device, 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 resistance to height
Warm heat-insulation transparent pipe is arranged inside the phase-change material；And it is transparent that the miniature webcam is sealed in the high temperature resistant heat insulation
The inside of pipe, for obtaining the phase transition patter image inside the phase-change material.
7. steam power plant's intermediate pressure cylinder according to claim 6 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the heat
Control unit determines the available surplus of phase change heat storage tank entirety according to the heat storage capacity of phase-transition heat-storage unit, and according to
The mapping relations of pre-stored available surplus and flow velocity, determine the flow control signal.
8. steam power plant's intermediate pressure cylinder according to claim 7 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the heat
Control unit includes graphical human-machine, and the graphical human-machine is used to show that the heat storage of each phase-transition heat-storage unit to be held
Amount.
9. steam power plant's intermediate pressure cylinder according to claim 8 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the heat
The heat input medium is also input to Gateway Station in Heating Network heat exchanger by input circuit, is exported in the Gateway Station in Heating Network heat exchanger and heat
The heating network return water in circuit carries out heat exchange.
10. steam power plant's intermediate pressure cylinder according to claim 9 is evacuated phase-transition heat-storage peak adjusting device, which is characterized in that the phase
Become thermal storage unit and is provided with heat exchange grid in the filling space that heat pipe and pipe wing surround.
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| CN201810006213 | 2018-01-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112179154A (en) * | 2020-09-24 | 2021-01-05 | 东北大学 | Two-stage phase-change recovery and storage device for metallurgical flue gas waste heat |
| CN112484129A (en) * | 2020-11-27 | 2021-03-12 | 山东电力研究院 | Thermoelectric decoupling system of thermoelectric unit and operation method |
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| CN1281125A (en) * | 1999-07-05 | 2001-01-24 | 清华同方股份有限公司 | Electric heating appliance with phase-change heat accumulation |
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| CN108488876B (en) | 2019-11-26 |
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