CN106440903A - Heat storage system for extraction condensation type heat power combined generation unit - Google Patents
Heat storage system for extraction condensation type heat power combined generation unit Download PDFInfo
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- CN106440903A CN106440903A CN201610912983.5A CN201610912983A CN106440903A CN 106440903 A CN106440903 A CN 106440903A CN 201610912983 A CN201610912983 A CN 201610912983A CN 106440903 A CN106440903 A CN 106440903A
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- exchanger
- heat storage
- initial station
- loop
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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- 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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- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a heat storage system for an extraction condensation type heat power combined generation unit. The heat storage system comprises a heat storage heat exchanger, a heat release heat exchanger, a heat storage device, a circulating pump and a control valve. The heat storage heat exchanger, the heat storage device, the circulating pump and the control valve form a heat storage loop; and the heat release heat exchanger, the heat storage device, the circulating pump and the control valve form a heat release loop. The heat storage heat exchanger is connected with an output end of a main steam extraction pipeline; for the heat storage loop, a loop working medium of the heat storage loop generates heat exchange with a main extracted steam outputted by the output end of the main steam extraction pipeline in the heat storage heat exchanger, and the heat is stored in the heat storage device; and for the heat release loop, a loop working medium of the heat release loop generates heat exchange with a target fluid working medium to be heated in the heat release heat exchanger after obtaining the heat from the heat storage device. The heat storage system can improve the unit power adjustability under the precondition of guaranteeing total heating load of the power combined generation unit.
Description
Technical field
The present invention relates to technical field of energy utilization is and in particular to a kind of heat accumulation system for extraction condensing type cogeneration unit
System.
Background technology
Cogeneration of heat and power is application energy cascade utilization principle, improves a kind of energy conserving system of efficiency of energy utilization.At this it is
In system, the high temperature and high pressure steam that the heating of the combustion of fossil fuel such as coal and natural gas obtains first is used for generating electricity, the steam after generating
It is used for heat supply again.Therefore co-generation unit have energy saving, reduce atmospheric pollution, to save urban land etc. many excellent
Point.
Existing cogeneration units mainly have back pressure type and two kinds of extraction condensing type.Wherein, extraction condensing type unit is in running
In, by uniform temperature, the superheated steam of certain pressure (as temperature is about 250 DEG C, absolute pressure is about 0.21MPa) is from steam turbine
It is drawn and is used for heating hot net water (i.e. heat supply water type is used for northern China heat supply in winter) to heat supply initial station, or directly will steam
Vapour transfers to heat user (supplying steam type, be used for industrial heat).This process make use of the waste heat of steam, improves primary energy
Utilization ratio.
In the heat supply phase, in order to ensure heating load, there is minimum main steam amount in cogeneration units, and therefore steam flows through steamer
There is lower limit in the amount of work of machine.This means that cogeneration units always have minimum generated energy, that is, unit is with " electricity determining by heat "
Mode operation, limits the regulating power that electricity is exerted oneself.
Content of the invention
For defect of the prior art, the present invention provides a kind of heat reservoir for extraction condensing type cogeneration unit,
Can improve, on the premise of ensureing the total heating demand of cogeneration units, the adjustability that unit electricity is exerted oneself.
For solving above-mentioned technical problem, the present invention provides technical scheme below：
A kind of heat reservoir for extraction condensing type cogeneration unit, including：
Heat storage exchanger, heat release heat exchanger, heat-storing device, circulating pump and control valve；
Wherein, heat storage exchanger, heat-storing device, circulating pump and control valve couple composition heat accumulation loop successively；Heat release heat exchange
Device, heat-storing device, circulating pump and control valve couple composition heat release loop successively；
Wherein, heat storage exchanger is coupled with the outfan of main bleed steam pipework；For heat accumulation loop, control valve control with
And under the driving of circulating pump, the master of the outfan output of the loop working medium in heat accumulation loop and main bleed steam pipework draws gas in heat storage and exchange
There is heat exchange in device, and storing heat is in heat-storing device；For heat release loop, in the control of control valve and the drive of circulating pump
Under dynamic, the loop working medium in heat release loop obtains after heat with target fluid working medium to be heated in heat release heat exchange from heat-storing device
There is heat exchange in device.
Preferably, described system is used for heat supply water type extraction condensing type cogeneration unit；
Correspondingly, described heat storage exchanger is also coupled with heat supply initial station；Wherein, described master draws gas all in heat storage exchanger
Export after there is heat exchange to described heat supply initial station；
Or part occurs heat exchange in heat storage exchanger, another part is directly output to described heat supply initial station；Described heat release is changed
Hot device is coupled with heat supply initial station；Wherein, target fluid working medium to be heated all heat release heat exchanger occur heat exchange after export to
Described heat supply initial station；Or part occurs heat exchange in heat storage exchanger, another part is directly output to described heat supply initial station.
Preferably, described heat storage exchanger and described heat supply initial station coupled in series, described heat release heat exchanger and heat supply initial station
Coupled in series.
Preferably, described heat storage exchanger and described heat supply initial station coupled in series, described heat release heat exchanger and heat supply initial station
Parallel connection.
Preferably, described heat storage exchanger and described heat supply initial station parallel connection, described heat release heat exchanger and heat supply initial station
Coupled in series.
Preferably, described heat storage exchanger and described heat supply initial station parallel connection, described heat release heat exchanger and heat supply initial station
Parallel connection.
Preferably, described system is used for for steam type extraction condensing type cogeneration unit；Described heat storage exchanger is drawn gas with master
The outfan connection of pipeline；
Specifically, the outfan of described main bleed steam pipework is provided with a control valve, the first end of described control valve and institute
State the outfan connection of main bleed steam pipework, the second end is coupled with user's heat supply end by a straight-through valve, the 3rd end is passed through one and led directly to
Valve is coupled with heat storage exchanger；
Described heat release heat exchanger and heater coupled in series, described heater is used for export through described heat release heat exchanger
Heating after target fluid working medium be heated to target temperature.
Preferably, the transition temperature range of the heat accumulation working medium in described heat-storing device is 40 DEG C～500 DEG C.
As shown from the above technical solution, provided by the present invention for the heat reservoir of extraction condensing type cogeneration unit, can be
When steamer owner's extraction for heat supply amount is higher than the thermic load of user, using vapor absorption part from main bleed steam pipework for the heat accumulation loop
Heat, is stored in heat-storing device；When steamer owner's extraction for heat supply amount is less than the thermic load of user, using the release of heat release loop
The energy of heat-storing device storage.Present invention achieves the decoupling that cogeneration units electricity is exerted oneself and heat is exerted oneself, thus improve heat
The motility of unit is produced in Electricity Federation.
Brief description
In order to be illustrated more clearly that the present embodiment or technical scheme of the prior art, below will be to embodiment or existing skill
Art description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are the one of the present invention
A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1-Fig. 3 be heat storage exchanger and heat supply that the embodiment of the present invention two provides connect at first stop, heat release heat exchanger and confession
The structural representation of heat initial station series connection；
Fig. 4-Fig. 6 be heat storage exchanger and heat supply that the embodiment of the present invention two provides connect at first stop, heat release heat exchanger and confession
Heat initial station structural representation in parallel；
Fig. 7-Fig. 9 is the heat storage exchanger and the heat supply in parallel, heat release heat exchanger in initial station and confession that the embodiment of the present invention two provides
The structural representation of heat initial station series connection；
Figure 10-Figure 12 is that the heat storage exchanger and heat supply initial station that the embodiment of the present invention two provides is in parallel, heat release heat exchanger and
Heat supply initial station structural representation in parallel；
Figure 13-Figure 15 is the embodiment of the present invention three proposition for the heat accumulation system for steam type extraction condensing type cogeneration unit
System structural representation；
In Fig. 1-15,1 is heat supply initial station, and 2 is extracted steam from turbine, and 3 is condenser or oxygen-eliminating device entrance, and 4 is steam-return line,
5 is hot net water return pipe, and 6 is circulating pump, and 7 is hot net water feed pipe, and 8 is heat supply network loop, and 9 is heating steam, and 10 is heater,
11 is water pump, and 12 is cold water inlet, and 13 is heat storage exchanger, and 14 is heat release heat exchanger, and 15 is heat-storing device, and 16 is circulating pump,
17 is control valve, and 18 is heat accumulation loop, and 19 is heat release loop, and 20 and 21 is control valve, and 22,23,24 and 25 is straight-through valve.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.Obviously, described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment being obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
Nearly ten years, with the development of the regenerative resources such as wind-force, photovoltaic, electric power system dispatching is exerted oneself to each power plant
Motility demand growing.But a large amount of cogeneration units present in current power system, its regulating power is limited,
Make power system that the pin of regenerative resource is received to be greatly limited.Therefore, need a kind of effective thermoelectricity decoupling system of invention badly
System is to improve the motility that unit electricity is exerted oneself.
The purpose of the present invention is to propose to a kind of heat reservoir for improving extraction condensing type cogeneration unit motility, with reality
Now the electricity of cogeneration units is exerted oneself and heat is exerted oneself and decoupled to a certain extent.This system can be not only used for heat supply water type thermoelectricity connection
Produce unit, can be used for for steam type cogeneration units again.On the premise of ensureing the total heating demand of cogeneration units, improve
The adjustability that unit electricity is exerted oneself.
Embodiment one
The embodiment of the present invention one provides a kind of heat reservoir for extraction condensing type cogeneration unit, and this system includes：
Heat storage exchanger, heat release heat exchanger, heat-storing device, circulating pump and control valve；In the present embodiment, control valve adopts three-way valve real
Now naturally it is also possible to disclosure satisfy that the control valve of demand using cross valve, five-way valve etc..
Wherein, heat storage exchanger, heat-storing device, circulating pump and control valve couple composition heat accumulation loop successively；Heat release heat exchange
Device, heat-storing device, circulating pump and control valve couple composition heat release loop successively；
Wherein, heat storage exchanger is coupled with the outfan of main bleed steam pipework；For heat accumulation loop, control valve control with
And under the driving of circulating pump, the master of the outfan output of the loop working medium in heat accumulation loop and main bleed steam pipework draws gas in heat storage and exchange
There is heat exchange in device, and storing heat is in heat-storing device；For heat release loop, in the control of control valve and the drive of circulating pump
Under dynamic, the loop working medium in heat release loop obtains after heat with target fluid working medium to be heated in heat release heat exchange from heat-storing device
There is heat exchange in device.
Here, the loop working medium in heat accumulation loop or heat release loop can be conduction oil or water under high pressure etc..
Here, for heat supply water type cogeneration units, target fluid working medium to be heated includes being returned by hot net water
The hot net water that water pipe flows out.For for steam type cogeneration units, target fluid working medium to be heated includes outside and draws
The cold water entering.
Here, by the control to control valve and circulating pump, heat accumulation is carried out by heat accumulation loop, and is returned by heat release
Road carries out heat release.Specifically, when steamer owner's extraction for heat supply amount is higher than heat user end load, drawn gas from master using heat accumulation loop
Vapor absorption partial heat in pipeline, is stored in heat-storing device.Bear when steamer owner's extraction for heat supply amount is less than heat user end
The energy of heat-storing device storage during lotus, is discharged using heat release loop.
The heat reservoir for extraction condensing type cogeneration unit that the present embodiment provides, can be in steamer owner's extraction for heat supply amount
During higher than heat user end load, using vapor absorption partial heat from main bleed steam pipework for the heat accumulation loop, it is stored in heat accumulation dress
In putting；When steamer owner's extraction for heat supply amount is less than heat user end load, discharge the energy of heat-storing device storage using heat release loop
Amount.The present embodiment achieves the decoupling that cogeneration units electricity is exerted oneself and heat is exerted oneself, thus improve the spirit of cogeneration units
Activity.
Embodiment two
In the present embodiment, described heat reservoir is used for heat supply water type extraction condensing type cogeneration unit.
Referring to Fig. 1, described heat storage exchanger 13 is also coupled with heat supply initial station 1；Wherein, described master draws gas and all changes in heat accumulation
Hot device 13 exports after there is countercurrent flow to described heat supply initial station 1 (such as heat storage exchanger 13 and heat supply at first stop 1 connect connection)；
Or there is heat exchange in heat storage exchanger in part, another part be directly output to described heat supply initial station (such as heat storage exchanger 13 with
Heat supply initial station 1 connection in parallel).
Additionally, described heat release heat exchanger 14 is also coupled with heat supply initial station 1, target fluid working medium to be heated is all in heat release
Heat exchanger 14 exports after there is countercurrent flow that (such as heat release heat exchanger 14 and heat supply 1 are connected connection at first stop to described heat supply initial station 1
Knot)；Or part occurs heat exchange in heat storage exchanger, another part is directly output to described heat supply initial station (such as heat release heat exchanger
14 connections in parallel with heat supply initial station 1).
In the first implementation of the present embodiment, described heat storage exchanger and described heat supply initial station coupled in series, institute
State heat release heat exchanger and heat supply initial station coupled in series.
Preferably, the first end of described heat storage exchanger is coupled with the outfan of main bleed steam pipework, the second end and described confession
Heat initial station couples；Specifically, the first end of described heat release heat exchanger is coupled with hot net water backwater end, and the second end is first with described heat supply
Stand connection.
Referring to Fig. 1, Fig. 2, Fig. 3, described heat storage exchanger 13 and described heat supply 1 coupled in series at first stop, described heat release heat exchange
Device 14 and heat supply initial station 1 coupled in series；
Wherein, the first end of described heat storage exchanger 13 is coupled with the outfan of main bleed steam pipework, the second end and described confession
Heat initial station 1 connection.The outfan of described main bleed steam pipework is used for exporting extracted steam from turbine, the extracted steam from turbine 2 in such as Fig. 1.
Wherein, the first end of described heat release heat exchanger 14 is coupled with hot net water backwater end, the second end and described heat supply initial station 1
Connection.Described hot net water backwater end is used for exporting the backwater current of hot net water, the hot net water return pipe 5 in such as Fig. 3, this hot net water
Return pipe 5 is exactly the backwater current being used for exporting hot net water.
In the second implementation of the present embodiment, described heat storage exchanger and described heat supply initial station coupled in series, institute
State heat release heat exchanger and the parallel connection of heat supply initial station.
Preferably, the first end of described heat storage exchanger is coupled with the outfan of main bleed steam pipework, the second end and described confession
Heat initial station couples；
Preferably, obtain comprising the 3rd of described heat supply initial station after described heat release heat exchanger and the parallel connection of heat supply initial station simultaneously
Connection branch road and the 4th parallel branch comprising heat release heat exchanger；
Correspondingly, described hot net water backwater end is provided with a control valve, the first end of described control valve and described heat supply network
Water backwater end couples, and the second end is coupled with the 3rd parallel branch, and the 3rd end is coupled with the 4th parallel branch；
Wherein, also include a straight-through valve in the 3rd parallel branch, the first end of this straight-through valve and the second of described control valve
End connection, the second end is coupled with described heat supply initial station；
A straight-through valve is also included, the 3rd end of the first end of this straight-through valve and described control valve in described 4th parallel branch
Connection, the second end is coupled with described heat release heat exchanger.
Referring to Fig. 4, Fig. 5, Fig. 6, described heat storage exchanger 13 and described heat supply 1 coupled in series at first stop, described heat release heat exchange
Device 14 and heat supply initial station 1 parallel connection；
Wherein, the first end of described heat storage exchanger 13 is coupled with the outfan of main bleed steam pipework, the second end and described confession
Heat initial station 1 connection.The outfan of described main bleed steam pipework is used for exporting extracted steam from turbine, the extracted steam from turbine 2 in such as Fig. 4.
Wherein, described heat release heat exchanger 14 and heat supply initial station 1 parallel connection, obtains comprising the 3rd of described heat supply initial station 1
Parallel branch and the 4th parallel branch comprising heat release heat exchanger 14；
Correspondingly, described hot net water backwater end is provided with a control valve 21, the first end of described control valve 21 with described
Hot net water backwater end couples, and the second end is coupled with the 3rd parallel branch, and the 3rd end is coupled with the 4th parallel branch；
Wherein, also include a straight-through valve 24 in the 3rd parallel branch, the first end of this straight-through valve 24 and described control valve 21
The second end connection, the second end and described heat supply 1 couple at first stop；
A straight-through valve 25 is also included in described 4th parallel branch, the first end of this straight-through valve 25 and described control valve 21
3rd end connection, the second end is coupled with described heat release heat exchanger 14.
In the third implementation of the present embodiment, described heat storage exchanger and described heat supply initial station parallel connection, institute
State heat release heat exchanger and heat supply initial station coupled in series.
Preferably, obtain comprising the of described heat supply initial station after described heat storage exchanger and described heat supply initial station parallel connection
One parallel branch and the second parallel branch comprising heat storage exchanger；
Correspondingly, the outfan of described main bleed steam pipework is provided with a control valve, and described control valve can adopt threeway
Valve, cross valve or two two-way valves are realized.The first end of described control valve is coupled with the outfan of described main bleed steam pipework, and second
End is coupled with the first parallel branch, and the 3rd end is coupled with the second parallel branch；
Wherein, a straight-through valve, the first end of this straight-through valve and the second of described control valve are also included in the first parallel branch
End connection, the second end is coupled with described heat supply initial station；
A straight-through valve, the 3rd end of the first end of this straight-through valve and described control valve is also included in described second parallel branch
Connection, the second end is coupled with described heat storage exchanger；
Specifically, the first end of described heat release heat exchanger is coupled with hot net water backwater end, and the second end is with described heat supply at first stop
Connection.
Referring to Fig. 7, Fig. 8, Fig. 9, described heat storage exchanger 13 and described heat supply initial station 1 parallel connection, obtain comprising described
First parallel branch of heat supply initial station and the second parallel branch comprising heat storage exchanger 13；
Correspondingly, the outfan of described main bleed steam pipework is provided with a control valve 20, the first end of described control valve 20
Couple with the outfan of described main bleed steam pipework, the second end is coupled with the first parallel branch, the 3rd end is joined with the second parallel branch
Connect；
Wherein, a straight-through valve 22, the first end of this straight-through valve 22 and described control valve 20 are also included in the first parallel branch
The second end connection, the second end and described heat supply 1 couple at first stop；
A straight-through valve 23, the first end of this straight-through valve 23 and described control valve 20 is also included in described second parallel branch
3rd end connection, the second end is coupled with described heat storage exchanger 13.
Wherein, described heat release heat exchanger 14 and heat supply initial station 1 coupled in series；Wherein, the first of described heat release heat exchanger 14
End is coupled with hot net water backwater end, and the second end is coupled with described heat supply initial station 1.Described hot net water backwater end is used for exporting hot net water
Backwater current, the hot net water return pipe 5 in such as Fig. 3, this hot net water return pipe 5 is exactly the backwater water being used for exporting hot net water
Stream.
In the 4th kind of implementation of the present embodiment, described heat storage exchanger and described heat supply initial station parallel connection, institute
State heat release heat exchanger and the parallel connection of heat supply initial station.
Preferably, obtain comprising the of described heat supply initial station after described heat storage exchanger and described heat supply initial station parallel connection
One parallel branch and the second parallel branch comprising heat storage exchanger；
Correspondingly, the outfan of described main bleed steam pipework is provided with a control valve, the first end of described control valve and institute
State the outfan connection of main bleed steam pipework, the second end is coupled with the first parallel branch, and the 3rd end is coupled with the second parallel branch；
Wherein, a straight-through valve, the first end of this straight-through valve and the second of described control valve are also included in the first parallel branch
End connection, the second end is coupled with described heat supply initial station；
A straight-through valve, the 3rd end of the first end of this straight-through valve and described control valve is also included in described second parallel branch
Connection, the second end is coupled with described heat storage exchanger；
Specifically, obtain comprising the 3rd of described heat supply initial station after described heat release heat exchanger and the parallel connection of heat supply initial station simultaneously
Connection branch road and the 4th parallel branch comprising heat release heat exchanger；
Correspondingly, described hot net water backwater end is provided with a control valve, the first end of described control valve and described heat supply network
Water backwater end couples, and the second end is coupled with the 3rd parallel branch, and the 3rd end is coupled with the 4th parallel branch；
Wherein, also include a straight-through valve in the 3rd parallel branch, the first end of this straight-through valve and the second of described control valve
End connection, the second end is coupled with described heat supply initial station；
A straight-through valve is also included, the 3rd end of the first end of this straight-through valve and described control valve in described 4th parallel branch
Connection, the second end is coupled with described heat release heat exchanger.
Referring to Figure 10, Figure 11, Figure 12, described heat storage exchanger 13 and described heat supply initial station 1 parallel connection, obtain comprising institute
The first parallel branch stating heat supply initial station and the second parallel branch comprising heat storage exchanger 13；
Correspondingly, the outfan of described main bleed steam pipework is provided with a control valve 20, the first end of described control valve 20
Couple with the outfan of described main bleed steam pipework, the second end is coupled with the first parallel branch, the 3rd end is joined with the second parallel branch
Connect；
Wherein, a straight-through valve 22, the first end of this straight-through valve 22 and described control valve 20 are also included in the first parallel branch
The second end connection, the second end and described heat supply 1 couple at first stop；
A straight-through valve 23, the first end of this straight-through valve 23 and described control valve 20 is also included in described second parallel branch
3rd end connection, the second end is coupled with described heat storage exchanger 13.
Wherein, described heat release heat exchanger 14 and heat supply initial station 1 parallel connection, obtains comprising the 3rd of described heat supply initial station 1
Parallel branch and the 4th parallel branch comprising heat release heat exchanger 14；
Correspondingly, described hot net water backwater end is provided with a control valve 21, the first end of described control valve 21 with described
Hot net water backwater end couples, and the second end is coupled with the 3rd parallel branch, and the 3rd end is coupled with the 4th parallel branch；
Wherein, also include a straight-through valve 24 in the 3rd parallel branch, the first end of this straight-through valve 24 and described control valve 21
The second end connection, the second end and described heat supply 1 couple at first stop；
A straight-through valve 25 is also included in described 4th parallel branch, the first end of this straight-through valve 25 and described control valve 21
3rd end connection, the second end is coupled with described heat release heat exchanger 14.
From the scheme recorded above, the present embodiment two propose for heat supply water type extraction condensing type cogeneration unit
Heat reservoir is divided into storing discharging heat exchanger, and all parallel, heat release is changed at first stop with heat supply initial station tandem, heat storage exchanger and heat supply
Hot device is parallel with heat supply initial station and storing discharging heat exchanger is all parallel with heat supply initial station.Its structure is successively as Fig. 1～Figure 12 institute
Show.This heat reservoir includes heat storage exchanger 13, heat release heat exchanger 14, heat-storing device 15, circulating pump 16, control valve 17.Heat accumulation
Device 15, circulating pump 16, control valve 17 and heat storage exchanger 13 are unified into heat accumulation loop 18, and loop working medium is conduction oil or water under high pressure
Deng.Heat-storing device 15, circulating pump 16, control valve 17 and heat release heat exchanger 14 are unified into heat release loop 19, and loop working medium is conduction oil
Or water under high pressure etc..Heat storage exchanger 13 and heat supply initial station 1 in main bleed steam pipework connecting (Fig. 1～Fig. 6) or in parallel (Fig. 7～
Figure 12) mode couples, make master draw gas respectively with loop working medium and hot net water heat exchange.Heat release heat exchanger 14 and heat supply initial station 1 are in heat
Coupled with series connection (Fig. 1～Fig. 3, Fig. 7～Fig. 9) or (Fig. 4～Fig. 6, Figure 10～Figure 12) mode in parallel in network pipeline, make hot net water
Respectively with loop working medium and main heat exchange of drawing gas.When loop working medium in heat accumulation loop 18 and heat release loop 19 flows through heat-storing device 15
With heat accumulation working medium heat exchange therein.
Can connect (Fig. 1～Fig. 6) in main bleed steam pipework in heat storage exchanger 13 and heat supply initial station 1, heat storage exchanger 13
In the upstream of heat supply initial station 1, its purpose is：So that master is drawn gas first with higher temperature and loop working medium heat exchange, after with relatively low temperature
Degree and hot net water heat exchange.
Heat storage exchanger 13 and heat supply initial station 1 also can be in main bleed steam pipeworks (Fig. 7～Figure 12) in parallel, and its purpose is：Can
By adjusting control valve 20 and straight-through valve 22 and 23, make partly or entirely to lead draw gas with higher temperature and loop working medium heat exchange and
Hot net water heat exchange.
Can connect (Fig. 1～Fig. 3, Fig. 7～Fig. 9) in heat supply network pipeline in heat release heat exchanger 14 and heat supply initial station 1, heat release heat exchange
Device 14 is located at the upstream of heat supply initial station 1, and its purpose is：Make hot net water first with relatively low temperature and loop working medium heat exchange, after with relatively
High temperature and main heat exchange of drawing gas.
Heat release heat exchanger 14 and heat supply initial station 1 also can be in main bleed steam pipeworks (Fig. 4～Fig. 6, Figure 10～Figure 12) in parallel, its
Purpose is：Adjusting control valve 21 and straight-through valve 24 and 25 can be passed through, make part or all of hot net water with relatively low temperature and loop
Working medium heat exchange and main heat exchange of drawing gas.
The phase transition temperature that heat accumulation working medium in heat-storing device 15 is selected need to be returned higher than hot net water less than main inlet temperature of drawing gas
Coolant-temperature gage, such as phase transition temperature are 40 DEG C～500 DEG C of phase-change material, and its Li Chu is：Both can draw gas middle absorption heat from master, and
Heat can be discharged to hot net water.
In summary, the embodiment of the present invention propose for the heat reservoir bag for steam type extraction condensing type cogeneration unit
Include heat accumulation process and exothermic process.
Wherein, heat accumulation process is as shown in the bold portion of Fig. 2,5,8 and 11.During this heat accumulation, the entrance of control valve 17
End connects with heat accumulation circuit outlet end.Under the driving of circulating pump 16, loop working medium in heat accumulation loop 18 with partly or entirely
Master draws gas and countercurrent flow occurs in heat storage exchanger 13, and coincidence circuit working medium storage heat is in heat-storing device 15.Now flow
The master going out heat storage exchanger 13 draws gas and will be fed directly at heat user.
Wherein, exothermic process is as shown in the bold portion of Fig. 3,6,9 and 12.In this exothermic process, the entrance of control valve 17
End connects with heat release circuit outlet end.Under the driving of circulating pump 16, the loop working medium in heat release loop 19 is with cold water in heat release
There is countercurrent flow, coincidence circuit working medium obtains heat from heat-storing device 15 in heat exchanger 14.Now flow out heat release heat exchanger
14 water will be heated to target temperature in entrance heater 10, is transported at heat user.
Embodiment three
In the present embodiment, above-mentioned heat reservoir is used for for steam type extraction condensing type cogeneration unit.
Referring to Figure 13～15, described system is used for for steam type extraction condensing type cogeneration unit；Described heat storage exchanger 13
Couple with the outfan of main bleed steam pipework；
Specifically, the outfan of described main bleed steam pipework is provided with a control valve 20, the first end of described control valve with
The outfan connection of described main bleed steam pipework, the second end is coupled with user's heat supply end (not shown) by a straight-through valve 22,
There is provided heating steam, the heating steam 9 in such as Figure 13 to user's heat supply end；A straight-through valve 23 and heat storage exchanger are passed through in 3rd end
13 connections.
Described heat release heat exchanger 14 and heater 10 coupled in series, described heater 10 is used for will be through described heat release heat exchange
Target fluid working medium after the heating of device 14 output is heated to target temperature.
Preferably, the transition temperature range of the heat accumulation working medium in described heat-storing device 15 is 40 DEG C～500 DEG C.
Referring to Figure 13～15.This heat reservoir includes：Heater 10, heat storage exchanger 13, heat release heat exchanger 14, heat accumulation dress
Put 15, circulating pump 16, control valve 17.Heat-storing device 15, circulating pump 16, control valve 17 and heat storage exchanger 13 are unified into heat accumulation loop
18, loop working medium is conduction oil or water under high pressure etc..Heat-storing device 15, circulating pump 16, control valve 17 and heat release heat exchanger 14 are unified into
Heat release loop 19, loop working medium is conduction oil or water under high pressure etc..Heat storage exchanger 13 is in a branch road of main bleed steam pipework.Logical
Overregulate control valve 20 and straight-through valve 22 and 23, make partly or entirely main steam extraction line working medium heat exchange.Heat release heat exchanger 14 and plus
Hot device 10 couples in a series arrangement, and heating cold water is to target temperature to user's heat supply.In heat accumulation loop 18 and heat release loop 19
Loop working medium flows through during heat-storing device 15 and heat accumulation working medium heat exchange therein.
In a branch road of main bleed steam pipework, its purpose is heat storage exchanger 13：Can be by adjusting control valve 20 and straight
Port valve 22 and 23, makes partly or entirely to lead and draws gas and loop working medium heat exchange.
Heat release heat exchanger 14 and heater 10 are connected in pipeline, and heat release heat exchanger 14 is located at the upstream of heater 10, its
Purpose is：Make cold water first with relatively low temperature and loop working medium heat exchange, be heated to target temperature by heater 10.
The phase transition temperature that heat accumulation working medium in heat-storing device 15 is selected need to be less than main inlet temperature of drawing gas, higher than cold water temperature
Degree, such as phase transition temperature is 40 DEG C～500 DEG C of phase-change material, and its benefit is：Both can draw gas middle absorption heat from master, again can be to
Cold water discharges heat.
In describing the invention, it should be noted that term " on ", the orientation of instruction such as D score or position relationship be base
In orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or imply
The device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The restriction of invention.Unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly.Example
As being to be fixedly connected or detachably couple, or be integrally coupled；Can be mechanical attachment or Electricity Federation
Connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For this
For the those of ordinary skill in field, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Also, it should be noted herein, such as first and second or the like relational terms are used merely to one
Entity or operation are made a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
There is any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to contain
Comprising of lid nonexcludability, wants so that including a series of process of key elements, method, article or equipment and not only including those
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that
Also there is other identical element including in the process of described key element, method, article or equipment.
Above example is merely to illustrate technical scheme, is not intended to limit；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to aforementioned each enforcement
Technical scheme described in example is modified, or carries out equivalent to wherein some technical characteristics；And these are changed or replace
Change, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a kind of heat reservoir for extraction condensing type cogeneration unit is it is characterised in that include：
Heat storage exchanger, heat release heat exchanger, heat-storing device, circulating pump and control valve；
Wherein, heat storage exchanger, heat-storing device, circulating pump and control valve couple composition heat accumulation loop successively；Heat release heat exchanger, storage
Thermal, circulating pump and control valve couple composition heat release loop successively；
Wherein, heat storage exchanger is coupled with the outfan of main bleed steam pipework；For heat accumulation loop, in the control of control valve and follow
Under the driving of ring pump, the master of the outfan output of the loop working medium in heat accumulation loop and main bleed steam pipework draws gas in heat storage exchanger
There is heat exchange, and storing heat is in heat-storing device；For heat release loop, in the control of control valve and the driving of circulating pump
Under, the loop working medium in heat release loop obtains after heat with target fluid working medium to be heated in heat release heat exchanger from heat-storing device
Middle generation heat exchange.
2. system according to claim 1 is it is characterised in that described system is used for heat supply water type extraction condensing type cogeneration machine
Group；
Correspondingly, described heat storage exchanger is also coupled with heat supply initial station；Wherein, described master draws gas and all occurs in heat storage exchanger
Export after heat exchange to described heat supply initial station；
Or part occurs heat exchange in heat storage exchanger, another part is directly output to described heat supply initial station；
Described heat release heat exchanger is coupled with heat supply initial station；Wherein, target fluid working medium to be heated is all sent out in heat release heat exchanger
Export to described heat supply initial station after raw heat exchange；
Or part occurs heat exchange in heat storage exchanger, another part is directly output to described heat supply initial station.
3. system according to claim 2 it is characterised in that connecting in described heat storage exchanger and described heat supply initial station connection
Connect, described heat release heat exchanger and heat supply initial station coupled in series.
4. system according to claim 2 it is characterised in that connecting in described heat storage exchanger and described heat supply initial station connection
Connect, described heat release heat exchanger and the parallel connection of heat supply initial station.
5. system according to claim 2 is it is characterised in that described heat storage exchanger is in parallel with described heat supply initial station
Connect, described heat release heat exchanger and heat supply initial station coupled in series.
6. system according to claim 2 is it is characterised in that described heat storage exchanger is in parallel with described heat supply initial station
Connect, described heat release heat exchanger and the parallel connection of heat supply initial station.
7. system according to claim 1 is it is characterised in that described system is used for for steam type extraction condensing type cogeneration machine
Group；Described heat storage exchanger is coupled with the outfan of main bleed steam pipework；
Specifically, the outfan of described main bleed steam pipework is provided with a control valve, the first end of described control valve and described master
The outfan connection of bleed steam pipework, the second end couples with user's heat supply end by a straight-through valve, the 3rd end by a straight-through valve and
Heat storage exchanger couples；
Described heat release heat exchanger and heater coupled in series, described heater was used for adding of exporting through described heat release heat exchanger
Target fluid working medium after heat is heated to target temperature.
8. the system according to any one of claim 1～7 is it is characterised in that heat accumulation working medium in described heat-storing device
Transition temperature range be 40 DEG C～500 DEG C.
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| CN201610912983.5A CN106440903B (en) | 2016-10-19 | 2016-10-19 | Heat reservoir for extraction condensing type cogeneration unit |
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| CN201610912983.5A CN106440903B (en) | 2016-10-19 | 2016-10-19 | Heat reservoir for extraction condensing type cogeneration unit |
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| CN108613153A (en) * | 2018-05-16 | 2018-10-02 | 思安新能源股份有限公司 | A kind of heat reservoir |
| CN109139153A (en) * | 2018-07-27 | 2019-01-04 | 国电龙源节能技术有限公司 | Thermal generation unit heat storage type assists peak regulation heating system and method |
| CN109869205A (en) * | 2019-03-26 | 2019-06-11 | 清华大学 | It is a kind of for the heat accumulation of cogeneration units, power generation and heating system |
| CN113503196A (en) * | 2021-06-25 | 2021-10-15 | 中国电建集团福建省电力勘测设计院有限公司 | Combined cycle cogeneration system based on integrated heat storage |
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| CN113503196B (en) * | 2021-06-25 | 2023-04-21 | 中国电建集团福建省电力勘测设计院有限公司 | Combined cycle cogeneration system based on integrated heat storage |
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| Publication number | Publication date |
|---|---|
| CN106440903B (en) | 2018-10-30 |
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