CN109681943A - Heating system - Google Patents
Heating system Download PDFInfo
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- CN109681943A CN109681943A CN201811584964.XA CN201811584964A CN109681943A CN 109681943 A CN109681943 A CN 109681943A CN 201811584964 A CN201811584964 A CN 201811584964A CN 109681943 A CN109681943 A CN 109681943A
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- heat
- heating
- steam
- electricity generation
- evaporator
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 94
- 230000005611 electricity Effects 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 230000006835 compression Effects 0.000 claims abstract description 25
- 238000007906 compression Methods 0.000 claims abstract description 25
- 239000002918 waste heat Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 208000010086 Hypertelorism Diseases 0.000 description 1
- 206010020771 Hypertelorism of orbit Diseases 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009466 transformation Effects 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
- F24D3/18—Hot-water central heating systems using heat pumps
-
- 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
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
-
- 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
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/126—Absorption type heat pumps
Abstract
The present invention provides a kind of heating system.The heating system includes heat-exchange system (1) and heating cycle system (2), heating cycle system (2) includes heat absorbing end and release end of heat, heat absorbing end is for absorbing electricity generation system waste heat, release end of heat is exchanged heat with heat-exchange system (1) by the first heat-exchanger rig and steam compression heat pump unit, and first the heat release part of heat-exchanger rig and steam compression heat pump unit be connected on heating cycle system (2), and the flow direction of the heat exchanging fluid along heating cycle system (2) is set gradually.Heating system according to the present invention can be realized great temperature difference heat supply, improve the hot transport capacity of heat supply network, improve heating efficiency trans-regional over long distances.
Description
Technical field
The invention belongs to heating engineering technical fields, and in particular to a kind of heating system.
Background technique
In recent years, with the increasing of electric power enterprise reform and energy environment protection pressure, the medium and small machine of 200MW and following low capacity
Group is gradually eliminated, and central heating heat source develops to large-scale hot power plant, since large-scale steam power plant is far from city, away from load center
Farther out, making full use of for the waste heat energy is constrained.Therefore, break heat source region to be unevenly distributed, development confession trans-regional over long distances
Thermal technology is particularly important.
However, due to heat supply hypertelorism, heat supply network heat is easy to cause to transport for heat supply trans-regional over long distances
Ability is lower, reduces the efficiency of heat supply trans-regional over long distances.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that providing a kind of heating system, it can be realized great temperature difference heat supply, mention
The high hot transport capacity of heat supply network improves heating efficiency trans-regional over long distances.
To solve the above-mentioned problems, the present invention provides a kind of heating system, including heat-exchange system and heating cycle system, supplies
Heat circulating system includes heat absorbing end and release end of heat, and for absorbing electricity generation system waste heat, release end of heat passes through heat absorbing end with heat-exchange system
First heat-exchanger rig and steam compression heat pump unit exchange heat, and the first heat-exchanger rig and steam compression heat pump unit
Heat release part is connected in heating cycle system, and the flow direction of the heat exchanging fluid along heating cycle system is set gradually.
Preferably, heat-exchange system includes heat user and the first heat exchanging pipe, and the first heat-exchanger rig includes the first absorption type heat
Pump, the first absorption heat pump include the first generator, the first absorber, the first evaporator with heat pump and the first heat pump condenser, are supplied
The release end of heat pipeline of heat circulating system successively exchanges heat with the first generator and the first evaporator with heat pump, the first heat pump condenser and the
One absorber passes sequentially through the first heat exchanging pipe and heat user exchanges heat.
Preferably, heat-exchange system includes heat user and the second heat exchanging pipe, and steam compression heat pump unit includes the first steaming
Device and the first condenser, the first evaporator and the heat exchange connection of the first condenser are sent out, the first evaporator is for absorbing heating cycle system
The heat of system, the first condenser are used to the heat that the first evaporator absorbs being transmitted to heat user by the second heat exchanging pipe.
Preferably, heat-exchange system further includes third heat exchanging pipe, the release end of heat of third heat exchanging pipe and heating cycle system
It is exchanged heat between pipeline by plate heat exchanger.
Preferably, plate heat exchanger is arranged on the release end of heat pipeline between the first generator and the first evaporator with heat pump.
Preferably, heating cycle system includes booster station, booster station be arranged in heating cycle system water supplying pipe and
On return pipe.
Preferably, heating system further includes the first electricity generation system, is passed through between the first electricity generation system and heating cycle system
The heat exchange connection of second absorption heat pump.
Preferably, the second absorption heat pump includes the second generator, the second absorber, the second evaporator with heat pump and the second heat
Condenser is pumped, the first electricity generation system is steam Rankine electricity generation system, and steam Rankine electricity generation system includes steam turbine, condenser and confession
Hot bleed steam pipework, condenser and heat supply bleed steam pipework are respectively connected to the different location of steam turbine, and condenser passes through the 4th heat exchange
Pipeline and the heat exchange of the second evaporator with heat pump connect, and heat supply bleed steam pipework and the heat exchange of the second generator connect, the second heat pump condenser
The heat absorbing end of heating cycle system is successively set on along the flow direction of heat exchanging fluid with the second absorber.
Preferably, steam Rankine electricity generation system further includes steam extraction allocation unit and adjusts pipeline, adjusts pipeline and heat supply is taken out
Vapor pipeline is connected on steam turbine by steam extraction allocation unit, is adjusted pipeline and is used to adjust the steam entered in heat supply bleed steam pipework
Amount.
Preferably, heating system further includes the second electricity generation system, and the second electricity generation system includes the second evaporator, adjusts pipeline
It is connect with the second evaporator heat exchange.
Preferably, the second electricity generation system is organic Rankine electricity generation system, and organic Rankine electricity generation system further includes expanding machine, hair
Motor, the second condenser and working medium pump adjust pipeline and exchange heat with the working medium for flowing through the second evaporator.
Preferably, organic Rankine electricity generation system further includes the 5th heat exchanging pipe, the second heat exchanging pipe and the second condenser
Heat absorbing side heat exchange connection, the both ends of the second heat exchanging pipe are both connected on the return pipe of heating cycle system.
Preferably, water circulating pump is provided on the 4th heat exchanging pipe.
Heating system provided by the invention, including heat-exchange system and heating cycle system, heating cycle system include heat absorption
End and release end of heat, heat absorbing end pass through the first heat-exchanger rig and steam for absorbing electricity generation system waste heat, release end of heat and heat-exchange system
Compression type heat pump assembly exchanges heat, and the heat release part of the first heat-exchanger rig and steam compression heat pump unit is connected on heat supply
In the circulatory system, and the flow direction of the heat exchanging fluid along heating cycle system is set gradually.In the heat release of heating cycle system
End is exchanged heat by the first heat-exchanger rig and steam compression heat pump unit with heat-exchange system respectively, and steam compression heat pump
Unit is located at the downstream of the first heat-exchanger rig in release end of heat, therefore can use steam compression heat pump unit and can lean on mechanical work
Driving working medium circulates in heat pump, so that heat to be continuously pumped into the spy of high temperature heat sink supply user from low-temperature heat source
Point, to further be cooled down to the heat exchanging fluid to have exchanged heat with the first heat-exchanger rig, so that through steam compression type
The temperature of heat exchanging fluid after heat pump unit heat exchange can drop to lower temperature, so as to increase heating cycle system
The heat exchanging fluid temperature difference between water supplying pipe and return pipe realizes more great temperature difference heat supply, so as to greatly improve net heat transport energy
Power improves heating efficiency trans-regional over long distances.
Detailed description of the invention
Fig. 1 is the structure principle chart of the heating system of the embodiment of the present invention.
Appended drawing reference indicates are as follows:
1, heat-exchange system；2, heating cycle system；3, heat user；4, the first heat exchanging pipe；5, the first generator；6, first
Absorber；7, the first evaporator with heat pump；8, the first heat pump condenser；9, the second heat exchanging pipe；10, the first evaporator；11, first
Condenser；12, third heat exchanging pipe；13, plate heat exchanger；14, booster station；15, water supplying pipe；16, return pipe；17, first
Electricity generation system；18, the second electricity generation system；19, the second generator；20, the second absorber；21, the second evaporator with heat pump；22,
Two heat pump condensers；23, steam turbine；24, condenser；25, heat supply bleed steam pipework；26, the 4th heat exchanging pipe；27, steam extraction distributes
Unit；28, pipeline is adjusted；29, the second evaporator；30, expanding machine；31, generator；32, the second condenser；33, working medium pump；
34, the 5th heat exchanging pipe；35, water circulating pump；36, transfer tube.
Specific embodiment
In conjunction with shown in Figure 1, according to an embodiment of the invention, heating system includes heat-exchange system 1 and heating cycle system
System 2, heating cycle system 2 include heat absorbing end and release end of heat, and heat absorbing end is for absorbing electricity generation system waste heat, release end of heat and heat exchange
System 1 is exchanged heat by the first heat-exchanger rig and steam compression heat pump unit, and the first heat-exchanger rig and steam compression type heat
The heat release part of pump assembly is connected in heating cycle system 2, and along the flow direction of the heat exchanging fluid of heating cycle system 2 according to
Secondary setting.
Pass through the first heat-exchanger rig and steam compression heat pump unit and heat exchange respectively in the release end of heat of heating cycle system 2
System 1 exchanges heat, and steam compression heat pump unit is located at the downstream of the first heat-exchanger rig in release end of heat, therefore can use
Steam compression heat pump unit can lean on mechanical work (such as compressor) driving working medium to circulate in heat pump, thus continuously
The characteristics of heat is pumped into high temperature heat sink supply user from low-temperature heat source, thus to exchanging heat with the first heat-exchanger rig
Heat exchanging fluid further cooled down, enable the temperature of heat exchanging fluid after steam compression heat pump set heat exchange
Lower temperature is dropped to, the heat exchanging fluid temperature difference between water supplying pipe and return pipe so as to increase heating cycle system 2 is real
Now more great temperature difference heat supply improves heating efficiency trans-regional over long distances so as to greatly improve the hot transport capacity of net.
Preferably, heat-exchange system 1 includes heat user 3 and the first heat exchanging pipe 4, and the first heat-exchanger rig includes first absorption
Heat pump, the first absorption heat pump include the first generator 5, the first absorber 6, the first evaporator with heat pump 7 and the condensation of the first heat pump
Device 8, the release end of heat pipeline of heating cycle system 2 successively exchange heat with the first generator 5 and the first evaporator with heat pump 7, the first heat pump
Condenser 8 and the first absorber 6 pass sequentially through the first heat exchanging pipe 4 and exchange heat with heat user 3.
In the present embodiment, the first heat-exchanger rig uses absorption heat pump, can be using the heat source that heat supply network high temperature supplies water
Driving heat source generates the useful thermal energy of a large amount of medium temperature, namely can use the high temperature heat source of heat supply network water supply applied to heat user 3
The thermal energy of low-temperature heat source be increased to medium temperature, to improve the utilization efficiency of thermal energy.
Heat-exchange system 1 includes heat user 3 and the second heat exchanging pipe 9, and steam compression heat pump unit includes the first evaporator
10 and first condenser 11, the first evaporator 10 and the heat exchange connection of the first condenser 11, the first evaporator 10 is for absorbing heat supply
The heat of the circulatory system 2, the first condenser 11 are used to transmit the heat that the first evaporator 10 absorbs by the second heat exchanging pipe 9
To heat user 3.
For steam compression heat pump unit, it is located at the release end of heat end of heating cycle system, heat exchanging fluid warp
It crosses steam compression heat pump set heat exchange and enters return pipe 16 later, then enter heating cycle system 2 through return pipe 16
Heat absorbing end, since steam compression heat pump unit is located at the release end of heat end of heating cycle system, can more sufficiently
Ground using possessed by steam compression heat pump unit continuously by heat from low-temperature heat source be pumped into high temperature heat sink supply user
Characteristic, continue to absorb passed through the first heat-exchanger rig and the first heat exchanging pipe 4 exchanged heat after low-grade heat source
Heat, so that the temperature of low-grade heat source is further decreased, more fully using acquired in the waste heat by electricity generation system
Thermal energy improves efficiency of energy utilization.Since heat exchanging fluid can be reduced to a lower temperature by steam compression heat pump unit
Degree, therefore can be greatly lowered return water temperature, increase supply backwater temperature difference, improve the hot transport capacity of heat supply network, be conducive to realize it is long away from
From trans-regional heat supply.
Preferably, heat-exchange system 1 further includes third heat exchanging pipe 12, third heat exchanging pipe 12 and heating cycle system 2
It is exchanged heat between release end of heat pipeline by plate heat exchanger 13.By the way that third heat exchanging pipe 12 is arranged, plate heat exchanger can use
13 further realize heat exchange with the release end of heat of heating cycle system 2, and can be quickly by the water temperature in third heat exchanging pipe 12
It is adjusted to required water temperature, allows heat user 3 directly using the hot water heated.
In the present embodiment, the heat release between the first generator 5 and the first evaporator with heat pump 7 is arranged in plate heat exchanger 13
End pipe road.Since plate heat exchanger 13 is between the first generator 5 and the first evaporator with heat pump 7, enter board-like change
The heat exchanging fluid temperature of hot device 13 can make between the heat exchanging fluid in the first generator 5 and the first evaporator with heat pump 7
The fluid temperature (F.T.) obtained into plate heat exchanger 13 is more reasonable, and the heat exchanging fluid and third improved in plate heat exchanger 13 exchanges heat
The heat exchange efficiency between water flow in pipeline 12 improves utilization efficiency of heat energy.
Heat exchanging fluid in heating cycle system 2 steams followed by the first generator 5, plate heat exchanger 13, the first heat pump
Hair device 7 and the first evaporator 10 exchange heat, after through return pipe 16 return heat absorbing end absorb heat, the heat exchanging fluid after heat absorption
Enter the first generator 5 through water supplying pipe 15, completes a heating cycle.
Heating cycle system 2 passes through the first generator using the heat exchanging fluid after absorbing heat as the driving heat source of absorption heat pump
5, heat exchanging fluid temperature is reduced to 25 by the primary heat exchange of plate heat exchanger 13, the first evaporator with heat pump 7 and the first evaporator 10
DEG C hereinafter, discharging more thermal energy for heat supply to expanding supply backwater temperature difference.
Heating cycle system 2 includes booster station 14, and 15 He of water supplying pipe of heating cycle system 2 is arranged in booster station 14
On return pipe 16.By the pump housing on booster station 14, foot can be provided to the heat exchanging fluid in water supplying pipe 15 and return pipe 16
Enough driving forces guarantee the flow efficiency of heat exchanging fluid, easily facilitate realization heat supply trans-regional over long distances.Booster station 14 can be with
To be multiple, and in heating cycle system 2 for being arranged on hot path, so as to be continuously changing in heating cycle system 2
The flowing of hot fluid improves circulation power, guarantees that the continuous and effective of electricity generation system thermal energy utilizes.
In the present embodiment, heating system further includes the first electricity generation system 17, the first electricity generation system 17 and heating cycle system
Pass through the heat exchange connection of the second absorption heat pump between system 2.
Specifically, the second absorption heat pump includes the second generator 19, the second absorber 20, the second evaporator with heat pump 21
With the second heat pump condenser 22, the first electricity generation system 17 is steam Rankine electricity generation system, and steam Rankine electricity generation system includes steamer
Machine 23, condenser 24 and heat supply bleed steam pipework 25, condenser 24 and heat supply bleed steam pipework 25 are respectively connected to steam turbine 23 not
Same position, and the vapor (steam) temperature that heat supply bleed steam pipework 25 introduces is higher than the vapor (steam) temperature that condenser 24 introduces, condenser 24 passes through
4th heat exchanging pipe 26 and the heat exchange of the second evaporator with heat pump 21 connect, and heat supply bleed steam pipework 25 and the heat exchange of the second generator 19 connect
It connects, the second heat pump condenser 22 and the second absorber 20 are successively set on heating cycle system 2 along the flow direction of heat exchanging fluid
Heat absorbing end.
Since the vapor (steam) temperature in heat supply bleed steam pipework 25 is higher than the vapor (steam) temperature entered in condenser 24, make heat supply
Steam in bleed steam pipework 25 is as driving heat source, using the steam in condenser 24 as base load heat source, in heating cycle system 2
In, the low grade residual heat that steam turbine 23 provides can be recycled by the second evaporator with heat pump 21, be recycled by the second generator 19
The high-grade thermal energy that steam turbine 23 provides, by the second heat pump condenser 22 and the second absorber 20 by the temperature of heat exchanging fluid by
90 DEG C are increased to greater than less than 25 DEG C, and then the heat exchanging fluid that will be greater than 90 DEG C is provided to heating cycle system by water supplying pipe 15
2 release end of heat increases effectively heat supply network supply backwater temperature difference, enhances the hot transport capacity of heat supply network.
Generally, due to which the steam pressure of steam turbine 23 needs to keep temperature, it is therefore desirable to the steaming in steam turbine 23
Steam pressure is adjusted, and discharges extra steam, therefore, by the way that heat supply bleed steam pipework 25 is arranged, can make full use of steam turbine
23 excess steam improves energy utilization efficiency, and will not impact to the working performance of steam turbine 23, additionally it is possible to effectively protect
Demonstrate,prove the reliable and stable operation of steam turbine 23.
Preferably, heat supply bleed steam pipework 25 is connected to the high pressure chest of steam turbine 23, and condenser 24 is connected to steam turbine 23
Low pressure chamber.
Condenser 24 is connected to the low pressure chamber of steam turbine 23, can be efficiently used low-grade in the steam exhaust of steam turbine 23
Waste heat heats the heat exchanging fluid in heating cycle system 2, and steam turbine 23 is without carrying out high back pressure transformation, it is ensured that machine
The efficient operation under rated load for a long time is organized, 23 low pressure steam exhaust of power plant steam turbine is improved and is unable to fully the problem of utilizing, improve
Primary energy utilization ratio.
In the present embodiment, since the exhausted spare heat of steam turbine 23 and the high-temperature steam of heat supply bleed steam pipework 25 is utilized,
Therefore the 24 steam discharge thermal energy of steam extraction and condenser of steam turbine 23 can be realized using the exhausted spare heat of steam turbine 23 as base load heat source
Cascade utilization, reduce system energy loss, can be further improved primary energy utilization ratio.
Preferably, in the present embodiment, steam Rankine electricity generation system further include steam extraction allocation unit 27 and adjust pipeline 28,
It adjusts pipeline 28 and heat supply bleed steam pipework 25 to be connected on steam turbine 23 by steam extraction allocation unit 27, adjusts pipeline 28 for adjusting
Section enters the quantity of steam in heat supply bleed steam pipework 25.
When the steam extraction by steam turbine 23 provides driving heat source to the second generator 19, need to guarantee the pumping of steam turbine 23
Vapour energy temperature guarantees the reliable and stable operation of the second absorption heat pump, due to coming from so that driving heat source keeps stablizing
The temperature and pressure of steam extraction at steam turbine 23 is simultaneously unstable, therefore also it is difficult to ensure that driving provided by heat supply bleed steam pipework 25
Dynamic heat source is stablized.Pipeline 28 is adjusted by setting, it can be by way of adjusting the quantity of steam in pipeline 28, so that steam extraction
Allocation unit changes according to extraneous thermic load, and reasonable distribution enters the quantity of steam for adjusting pipeline 28 and enters the steaming of absorption heat pump
Vapour amount guarantees the reliable and stable supply of driving heat source.
Preferably, heating system further includes the second electricity generation system 18, and the second electricity generation system 18 includes the second evaporator 29, is adjusted
It saves pipeline 28 and the heat exchange of the second evaporator 29 connects.
In the present embodiment, the second electricity generation system 18 is organic Rankine electricity generation system, and organic Rankine electricity generation system further includes
Expanding machine 30, generator 31, the second condenser 32 and working medium pump 33 adjust pipeline 28 and change with the working medium for flowing through the second evaporator 29
Heat.
In the present embodiment, the extra steam extraction in adjusting pipeline 28 can be converted to the electricity of organic Rankine electricity generation system
Energy.Steam extraction allocation unit 27 changes smart allocation according to extraneous thermic load, into organic Rankine electricity generation system and enters the second suction
The steam extraction amount of receipts formula heat pump, especially under the operating condition of low heat loads, in the case where boiler, steam turbine 23 are not involved in adjusting,
Increase the quantity of steam for entering the second evaporator 29 of organic Rankine electricity generation system, converts electric energy for extra steam extraction thermal energy, mention
The generated energy and utilization rate of equipment and installations of high system realize thermoelectricity load flexible modulation.
By above-mentioned mode, it can guarantee unit in the case where rated load operation, thermic load is only organic when changing
Rankine electricity generation system participation movement, effectively prevents the frequent variable parameter operation of Steam Turbine, improves Steam Turbine generating efficiency,
Coal consumption for power generation is reduced, pollutant discharge amount is reduced.
Preferably, organic Rankine electricity generation system further includes the 5th heat exchanging pipe 34, the second heat exchanging pipe 9 and the second condenser
32 heat absorbing side, which exchanges heat, to be connected, and the both ends of the second heat exchanging pipe 9 are both connected on the return pipe 16 of heating cycle system 2.It is preferred that
Ground is additionally provided with transfer tube 36 on the second heat exchanging pipe 9, so that heat exchanging fluid is driven smoothly to flow through the second condenser 32, with
Working medium in second condenser 32 exchanges heat.
Working medium in organic Rankine electricity generation system is, for example, penta propane.
In the present embodiment, the second condenser by extraction section heat supply network low-temperature return water as organic Rankine electricity generation system
32 low-temperature heat source enters heat supply network water system so as to effectively recycle the expanding machine waste heat of organic Rankine electricity generation system, therefore,
Thermoelectricity load flexible modulation had both may be implemented in the heating system, improved System Turbine Relative Internal Efficiency, reduced energy consumption.
Preferably, it is provided with water circulating pump 35 on the 4th heat exchanging pipe 26, can is the 4th heat exchange by water circulating pump 35
Recirculated water on pipeline 26 provides power, to guarantee that the steam heat in condenser 24 can be successfully transmitted to by recirculated water
Second evaporator with heat pump 21, and then heating cycle system 2 is transmitted to by the second evaporator with heat pump 21.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Protect range.
Claims (13)
1. a kind of heating system, which is characterized in that including heat-exchange system (1) and heating cycle system (2), the heating cycle system
System (2) includes heat absorbing end and release end of heat, and the heat absorbing end is for absorbing electricity generation system waste heat, the release end of heat and the heat exchange
System (1) is exchanged heat by the first heat-exchanger rig and steam compression heat pump unit, and first heat-exchanger rig and vapour pressure
The heat release part of contracting formula heat pump unit is connected on the heating cycle system (2), and changing along heating cycle system (2)
The flow direction of hot fluid is set gradually.
2. heating system according to claim 1, which is characterized in that the heat-exchange system (1) includes heat user (3) and
One heat exchanging pipe (4), first heat-exchanger rig include the first absorption heat pump, and first absorption heat pump includes the first hair
Raw device (5), the first absorber (6), the first evaporator with heat pump (7) and the first heat pump condenser (8), the heating cycle system
(2) release end of heat pipeline successively exchanges heat with first generator (5) and first evaporator with heat pump (7), and described the
One heat pump condenser (8) and first absorber (6) pass sequentially through first heat exchanging pipe (4) and heat user (3) exchange heat.
3. heating system according to claim 1, which is characterized in that the heat-exchange system (1) includes heat user (3) and
Two heat exchanging pipes (9), the steam compression heat pump unit include the first evaporator (10) and the first condenser (11), and described the
One evaporator (10) and first condenser (11) heat exchange connection, first evaporator (10) are followed for absorbing the heat supply
The heat of loop system (2), the heat that first condenser (11) is used to absorb first evaporator (10) pass through described
Second heat exchanging pipe (9) is transmitted to the heat user (3).
4. heating system according to claim 2, which is characterized in that the heat-exchange system (1) further includes third heat exchanger tube
Road (12) passes through plate-type heat-exchange between the third heat exchanging pipe (12) and the release end of heat pipeline of the heating cycle system (2)
Device (13) heat exchange.
5. heating system according to claim 4, which is characterized in that the plate heat exchanger (13) is arranged described first
On release end of heat pipeline between generator (5) and first evaporator with heat pump (7).
6. heating system according to any one of claim 1 to 5, which is characterized in that heating cycle system (2) packet
It includes booster station (14), water supplying pipe (15) and return pipe of booster station (14) setting in the heating cycle system (2)
(16) on.
7. heating system according to any one of claim 1 to 5, which is characterized in that the heating system further includes
One electricity generation system (17) passes through the second absorption type heat between first electricity generation system (17) and the heating cycle system (2)
Pump heat exchange connection.
8. heating system according to claim 7, which is characterized in that second absorption heat pump includes the second generator
(19), the second absorber (20), the second evaporator with heat pump (21) and the second heat pump condenser (22), first electricity generation system
It (17) is steam Rankine electricity generation system, the steam Rankine electricity generation system includes that steam turbine (23), condenser (24) and heat supply are taken out
Vapor pipeline (25), the condenser (24) and the heat supply bleed steam pipework (25) are respectively connected to the difference of the steam turbine (23)
Position, the condenser (24) is connected by the 4th heat exchanging pipe (26) and second evaporator with heat pump (21) heat exchange, described
Heat supply bleed steam pipework (25) and second generator (19) heat exchange connect, second heat pump condenser (22) and described second
Absorber (20) is successively set on the heat absorbing end of the heating cycle system (2) along the flow direction of heat exchanging fluid.
9. heating system according to claim 8, which is characterized in that the steam Rankine electricity generation system further includes steam extraction point
With unit (27) and pipeline (28) are adjusted, the adjusting pipeline (28) and the heat supply bleed steam pipework (25) pass through the steam extraction point
It is connected on the steam turbine (23) with unit (27), the adjusting pipeline (28) enters the heat supply bleed steam pipework for adjusting
(25) quantity of steam in.
10. heating system according to claim 9, which is characterized in that the heating system further includes the second electricity generation system
(18), second electricity generation system (18) includes the second evaporator (29), the adjusting pipeline (28) and second evaporator
(29) heat exchange connection.
11. heating system according to claim 10, which is characterized in that second electricity generation system (18) is organic Rankine
Electricity generation system, the organic Rankine electricity generation system further include expanding machine (30), generator (31), the second condenser (32) and working medium
It pumps (33), the working medium heat exchange for adjusting pipeline (28) and flowing through second evaporator (29).
12. heating system according to claim 11, which is characterized in that the organic Rankine electricity generation system further includes the 5th
The heat absorbing side of heat exchanging pipe (34), second heat exchanging pipe (9) and second condenser (32), which exchanges heat, to be connected, and described second
The both ends of heat exchanging pipe (9) are both connected on the return pipe (16) of the heating cycle system (2).
13. heating system according to claim 8, which is characterized in that be provided with and follow on the 4th heat exchanging pipe (26)
Ring water pump (35).
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| CN201811584964.XA CN109681943A (en) | 2018-12-24 | 2018-12-24 | Heating system |
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