CN107218093A - Heating system and operation method are reclaimed in a kind of thermal power plant's exhaust steam - Google Patents
Heating system and operation method are reclaimed in a kind of thermal power plant's exhaust steam Download PDFInfo
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- CN107218093A CN107218093A CN201710468516.2A CN201710468516A CN107218093A CN 107218093 A CN107218093 A CN 107218093A CN 201710468516 A CN201710468516 A CN 201710468516A CN 107218093 A CN107218093 A CN 107218093A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
Heating system, including two condensers of two steam turbines and correspondence, exhaust steam extraction system, exhaust steam recycling system, joint water conservancy project system are reclaimed in a kind of thermal power plant's exhaust steam；Using exhaust steam extraction system, perforate extracts exhaust steam on two condensers respectively, is pipelined to exhaust steam header；Joint water conservancy project system includes the first exhaust steam condenser, the second exhaust steam condenser, increases steam turbine condenser；Exhaust steam header point two-way pipeline connects the first exhaust steam condenser, the second exhaust steam condenser；Exhaust steam header increases steam turbine condenser through the connection of exhaust steam recycling system pipeline；Joint water conservancy project system access heating network, realizes that exhaust steam in steam turbine is utilized by high efficiente callback, and energy-saving benefit is maximized so that whole therrmodynamic system parameter matching is most reasonable, and the method for operation is optimal.
Description
Technical field
The invention belongs to power plant for energy conservation field, and in particular to heating system is reclaimed in a kind of thermal power plant's exhaust steam.
Background technology
It is well known that the cold end loss of thermal power plant Rankine cycle, accounts for more than the 50% of whole power plant's energy loss.
Either Direct Air-Cooled, indirect air cooling or water cooling Steam Turbine, entrained by the exhaust steam discharged after steam turbine acting
Amount of heat (the steam latent heat of vaporization) is wasted in vain, (electricity), water consumption moreover, cooling exhaust steam must consume energy.
If steam turbine of thermal power plant exhaust steam can be recycled, amount of heat (the steam latent heat of vaporization) can be not only reclaimed,
Moreover, the power consumption water consume of cooling exhaust steam can save.
The exhaust steam heat energy of Direct Air-Cooled, indirect air cooling or water cooling Steam Turbine is recycled, to heat supply network heat supply, cold end is reduced
Loss, is a very effective energy saving means.
The content of the invention
It is an object of the invention to the exhaust steam of high efficiente callback steam turbine of thermal power plant heat supply system is reclaimed there is provided a kind of thermal power plant's exhaust steam
System, it is adaptable to newly-built and reconstruction power plant.
Heating system, including two condensers of two steam turbines and correspondence are reclaimed in a kind of thermal power plant's exhaust steam, exhaust steam extraction system, weary
Vapour recycling system, joint water conservancy project system；Two steam turbines have different operation back pressures, respectively high back pressure steam turbine, the low back of the body
Press steam turbine；It is characterized in that：Using exhaust steam extraction system, perforate extracts exhaust steam on two condensers respectively, passes through pipe
Road is transported to exhaust steam header；Joint water conservancy project system includes the first exhaust steam condenser, the second exhaust steam condenser, increases steam turbine condenser；
Exhaust steam header point two-way pipeline connects the first exhaust steam condenser, the second exhaust steam condenser；Exhaust steam header is recycled through exhaust steam
Road connection under the overall leadership increases steam turbine condenser；Joint water conservancy project system access heating network.
The operation method of heating system is reclaimed based on thermal power plant's exhaust steam, it is characterised in that the exhaust steam of steam turbine of thermal power plant group
It is introduced to after exhaust steam header, according to heated type condenser system configuring condition, and carbonated drink parameter match condition, exhaust steam is carried out
Multichannel process, reclaims exhaust steam heat；
A roads：Low parameter exhaust steam is directly entered the first exhaust steam condenser, for heating heat supply network backwater；
B roads：The exhaust steam of high parameter is directly entered the second exhaust steam condenser as thermal source, continues to heat the first exhaust steam condensing
Device comes out heat supply network backwater；
C roads：By the use of high back pressure Steam Turbine Through IP Admission steam discharge as steam turbine power steam is increased, the exhaust steam of high parameter is aspirated, is increased
Steam turbine steam discharge, which enters, increases steam turbine condenser, continues the second exhaust steam condenser of heating and comes out heat supply network backwater；
Just end is trembled with fear the phase in the winter time, and three-level heat hot water is provided to heat supply heat supply network；
Algid stage in the winter time, when Heating Season is run, high back pressure Steam Turbine Through IP Admission steam discharge and low back pressure turbine intermediate pressure cylinder
Steam discharge respectively enters heat exchangers for district heating, and heating increases steam turbine condenser and comes out heat supply network backwater；After level Four is heated, hot net water reaches
Required heating temperature, is sent to outside networks of heat supply.
By above-mentioned technical proposal, realize that exhaust steam is utilized by high efficiente callback, energy-saving benefit is maximized, meanwhile, in whole heat
In Force system, parameter matching is most reasonable, and the method for operation is optimal, multiple functional complete, and Operation and Maintenance is simple, and cost of investment is few, fortune
Row is safe and reliable.
Brief description of the drawings
Fig. 1 is that heating system schematic diagram is reclaimed in thermal power plant's exhaust steam；
Steam discharge in steam discharge in wherein 1 high back pressure steam turbine, 2 low back pressure turbines, 3 high back pressure turbine low pressure cylinders, the 4 low back ofs the body
Press turbine low pressure cylinder, 5 high back pressure turbine condensers, 6 low back pressure turbine condensers, 7 increasing steam turbines, 8 heat supply network cyclic water outlets
Pipe, 9 heat supply networks are recycled back to water pipe, and 10 heat exchangers for district heatings, 11 increasing steam turbine condensers, 12 second exhaust steam condensers, 13 first exhaust steam are coagulated
Vapour device, 14 exhaust steam headers, 15 exhaust steam header control valves, 16-19 pipe-line control valves door.
Embodiment
1 the invention will be further described below in conjunction with the accompanying drawings, it will be appreciated that content described herein is merely to illustrate
It is of the invention with explaining, it is not intended to limit the present invention.
Embodiment one：
The installation of certain power plant is 2X600MW grades of indirect air cooling units, and the exhaust steam of two steam turbines is utilized simultaneously.
Heating system, including two condensers of two steam turbines and correspondence, exhaust steam extraction system, exhaust steam are reclaimed in its thermal power plant's exhaust steam
Recycling system, joint water conservancy project system；
Two steam turbines have different operation back pressures, respectively high back pressure steam turbine, low back pressure turbine.Such as, two
600MW level steam turbine groups, two 600MW indirect air coolings units are run simultaneously.During winter operation, wherein a turbine back pressure is
10.5KPa is run, and another turbine back pressure runs for 20KPa.(10.5KPa and 20KPa, it is only for narration it is convenient and
Illustrated example.The configuration mode of other specification is also in the application protection domain).The exhaust steam of two units is all recycled.
Using exhaust steam extraction system, opened respectively from 1#600MW level steam turbines condenser and 2#600MW turbine condensers
Hole, the exhaust steam of two indirect air coolings is extracted, and is pipelined to exhaust steam header (main pipe).Exhaust steam extraction system includes weary
Vapour draws special parts, exhaust steam and draws pipeline and exhaust steam header (main pipe)；Exhaust steam draws special parts and is fixedly installed in condenser throat
On side, exhaust steam is drawn and exhaust steam fairlead is set on throat's side plate that special parts are surrounded, in the condenser throat side of perforate
Side, which is set, sets exhaust steam deflector on the inside of reinforcement structure, exhaust steam fairlead；Exhaust steam draws special parts and draws pipeline company by exhaust steam
Connect exhaust steam header；Exhaust steam fairlead is provided with control valve.Exhaust steam extraction system is by (Direct Air-Cooled, indirect air cooling, water cooling) vapour
Turbine discharge is extracted from condenser or blow-off line, and control exhaust steam is discharged into the amount of Air-Cooling Island or condenser.
Exhaust steam header is provided with valve, forms two-stage structure.One section is connected with 10.5KPa exhaust steam, and the other end is weary with 20KPa
Vapour phase connects.Respectively low pressure stage and high pressure section, high pressure section pass through exhaust steam fairlead and connect high back pressure turbine condenser, low pressure stage
Low back pressure turbine condenser is connected by exhaust steam fairlead.Valve is controlled on exhaust steam header opens, and realizes one section of overall knot
Structure.Exhaust steam header sets control valve to be easy to system to carry out a variety of adjustment operational modes.
Exhaust steam recycling system, which is set, increases steam turbine, high back pressure Steam Turbine Through IP Admission steam discharge connecting line to the work for increasing steam turbine
Make (power) steam inlet, exhaust steam header high pressure section connecting line to the suction steam ports for increasing steam turbine increases the steam discharge connecting tube of steam turbine
Lu Zhizeng steam turbine condensers vapour (shell) side；Can also be in parallel using some increasing steam turbines, for further carrying out steam increasing temperature and pressure
Or increase operational flexibility.
Or, when not using exhaust steam header, low back pressure turbine exhaust steam fairlead is directly connected to the first exhaust steam condenser,
High back pressure exhaust steam in steam turbine fairlead is directly connected to the second exhaust steam condenser；High back pressure exhaust steam in steam turbine fairlead is also connected with exhaust steam
The suction steam ports of recycling system, or low back pressure turbine exhaust steam fairlead also connect the suction of exhaust steam recycling system
Steam ports；The steam drain connection of exhaust steam recycling system increases steam turbine condenser；Joint water conservancy project system access heating network.
Increase steam turbine and increase steam turbine or unadjustable increasing steam turbine to be adjustable.
Increase steam turbine power steam, can also be steam turbine high-pressure cylinder steam discharge or boiler reheater cold end (or heat
End) draw gas.
Joint water conservancy project system includes the first exhaust steam condenser, the second exhaust steam condenser, increases steam turbine condenser, heat supply network heating
Device, heat supply network water system, supporting piping (including pipeline, valve, pipe fitting, suspension and support, expansion joint etc.).
Exhaust steam header low pressure stage connecting line is to first exhaust steam condenser vapour (shell) side, exhaust steam header high pressure section connecting line
To second exhaust steam condenser vapour (shell) side.High back pressure Steam Turbine Through IP Admission steam discharge and low back pressure turbine intermediate pressure cylinder steam discharge connect respectively
Road is taken over to heat exchangers for district heating.
The heat supply network circulating water line of heat supply network water system sequentially passes through the first exhaust steam condenser, the second exhaust steam condenser, increases vapour
Machine condenser, heat exchangers for district heating, heat supply network recirculated water supply water to heat supply network after heating.
Each condenser condensed water pipeline connects the hot well of steam exhaust device, can also be with independent hot well.
The exhaust steam of indirect air cooling unit is introduced to after exhaust steam header, according to heated type condenser system configuring condition, and
Carbonated drink parameter match condition, it is necessary to be handled the exhaust steam in exhaust steam header accordingly, and further to utilize, recovery exhaust steam is hot
Amount.
Multichannel process recovery is carried out to exhaust steam.
A roads：Low parameter (10.5KPa) exhaust steam is directly entered the first exhaust steam condenser, for heating heat supply network backwater.Heat supply network is returned
Coolant-temperature gage is 25 DEG C.10.5KPa exhaust steam can directly heat heat supply network backwater.The heat supply network backwater of 25 DEG C of heating, makes its heating 12
DEG C, reach 37 DEG C.The exhaust steam pressure extracted need not be handled.
B roads：20KPa exhaust steam can continue to heat 37 DEG C of the water that the first exhaust steam condenser comes out as thermal source.Institute
So that 20KPa exhaust steam is directly entered the second exhaust steam condenser, and the hot net water of 37 DEG C of heating makes it heat up 21 DEG C, reaches 58 DEG C.
The exhaust steam pressure extracted need not be handled.
C roads：In order to further improve the heat utilization efficiency of exhaust steam, steam turbine (or other modes) can be increased by steam by exhaust steam
Pressure is suitably raised, and vapor (steam) temperature is to be enhanced therewith, then goes to heat heat supply network backwater.Utilize high back pressure Steam Turbine Through IP Admission steam discharge
As steam turbine power steam is increased, suction exhaust steam header high pressure section 20KPa steam discharges (exhaust steam) increase steam turbine steam discharge 45KPa and enter increasing vapour
Machine condenser, as heat supply network backwater third level heater, continues to heat heat supply network backwater, it is heated up 20 DEG C, reach 78 DEG C.
So far, the exhaust steam in exhaust steam header, is boosted to tri- kinds of parameters of 45KPa and is entered with 10.5KPa, 20KPa, increasing steam turbine respectively
Enter different condenser heating heat supply network backwater, heat supply network backwater has been warming up to 78 DEG C by 25 DEG C.
78 DEG C of hot net water enters the heat exchangers for district heating positioned at initial station, carries out fourth stage heating.After level Four is heated, heat
Net water reaches 120 DEG C, is sent to outside networks of heat supply.
Just end is trembled with fear the phase in the winter time, and 78 DEG C of hot water can be directly to resident's heat supply.For algid stage in winter, 78 DEG C of heat
Water, enters back into heat exchangers for district heating, and 120 DEG C are heated to using extracted steam from turbine, is resident's heat supply.
The system work operation is as follows：
Two (1# and 2#) exhaust steam in steam turbine are drawn from blow-off line or condenser throat.
1# exhaust steam in steam turbine enters the first exhaust steam condenser, as primary heater, heats heat supply network backwater, it is heated up
Certain temperature.2# exhaust steam in steam turbine enters weary second exhaust steam condenser, as second level heater, continues to heat heat supply network backwater,
Make its certain temperature that heats up again.
By the use of 2# Steam Turbine Through IP Admissions steam discharge as steam turbine power steam is increased, the 2# turbine low pressure cylinders row extracted is aspirated
Vapour (exhaust steam), increases steam turbine steam discharge and enters increasing steam turbine condenser, as heat supply network backwater third level heater, continues heating heat supply network and returns
Water, makes its certain temperature that heats up again.
When Heating Season is run, the heat exchangers for district heating positioned at initial station belongs to fourth stage heater.After level Four is heated, heat supply network
Water has reached required temperature, is sent to outside networks of heat supply.
The operation of Multi-stage heating formula condenser system is as follows：
The water system of three condensers, mutual sequential series can flow successively through first weary with series operation, i.e. heat supply network backwater
Vapour condenser, the second exhaust steam condenser, increasing steam turbine condenser, water system water temperature are stepped up.
The water system of three condensers, respectively with bypass conduit, can also bypass operation, i.e. heat supply network backwater flows through first
After exhaust steam condenser, from the second exhaust steam condenser, increase steam turbine condenser bypass, flow directly into heat exchangers for district heating, or heat supply network is returned
Water is directly entered the second exhaust steam condenser without flow through the first exhaust steam condenser, from steam turbine condenser bypass is increased, then flows into heat supply network
Heater, or heat supply network backwater are directly entered increasing steam turbine condenser without flow through the first exhaust steam condenser, the second exhaust steam condenser
Afterwards, heat exchangers for district heating is flowed into.
If the overhaul of steam turbine of 10.5KPa back pressure operations, there is no the exhaust steam of 10.5KPa back pressures in exhaust steam header.That
, the first exhaust steam condenser is just split.Heat supply network backwater can flow through the first exhaust steam condenser, but not be warmed.Heat supply network backwater
The first exhaust steam condenser can also be bypassed.Heat supply network backwater is heated up in the second exhaust steam condenser, increasing steam turbine condenser,
Heated up angle value will be varied from.This is a kind of variable parameter operation, and temperature breach is filled by heat exchangers for district heating, extracted steam from turbine
Amount can suitably increase.
If the overhaul of steam turbine of 20KPa back pressure operations, there is no the exhaust steam of 20KPa back pressures in exhaust steam header.There are two kinds
System configuration and operational mode.
First operational mode, the second exhaust steam condenser, increases steam turbine condenser and is split, and heat supply network backwater is from the second exhaust steam condensing
Device, increasing steam turbine condenser flow through or bypassed the second exhaust steam condenser, increase steam turbine condenser, and heat supply network backwater heating system is by level Four
It is changed into two grades, i.e.,：Temperature caused by first exhaust steam condenser, heat exchangers for district heating, the second exhaust steam condenser, increasing steam turbine condenser off-the-line
Degree shortcoming is compensated by heat exchangers for district heating, and extraction flow of steam suitably increases.
Second operational mode, the second exhaust steam condenser is split, and heat supply network backwater flows through or bypassed from the second exhaust steam condenser
Fall the second exhaust steam condenser, heat supply network backwater heating system is changed into three-level from level Four, i.e.,：First exhaust steam condenser, increasing steam turbine condensing
Temperature shortcoming is compensated by heat exchangers for district heating caused by device, heat exchangers for district heating, the second exhaust steam condenser off-the-line, and extraction flow of steam is fitted
Work as increase；Now, the power steam and suction exhaust steam that increase steam turbine both are from the low back pressure turbine steam turbine of operation, low back pressure steam
The high back pressure that is adjusted to of turbine is run.
If two steam turbines are all overhauled, heat supply accordingly stops.
Finally it should be noted that：The explanation of the present invention is the foregoing is only, is not intended to limit the invention, although to this hair
Bright to be described in detail, for those skilled in the art, it still can be to foregoing described technical scheme
Modify, or equivalent substitution is carried out to which part technical characteristic.Within the spirit and principles of the invention, made
Any modification, equivalent substitution and improvements etc., should be included in the scope of the protection.
Claims (10)
1. heating system, including two condensers of two steam turbines and correspondence, exhaust steam extraction system, exhaust steam are reclaimed in a kind of thermal power plant's exhaust steam
Recycling system, joint water conservancy project system；Two steam turbines have different operation back pressures, respectively high back pressure steam turbine, low back pressure
Steam turbine；It is characterized in that：Using exhaust steam extraction system, perforate extracts exhaust steam on two condensers respectively, passes through pipeline
It is transported to exhaust steam header；Joint water conservancy project system includes the first exhaust steam condenser, the second exhaust steam condenser, increases steam turbine condenser；It is weary
Vapour header point two-way pipeline connects the first exhaust steam condenser, the second exhaust steam condenser；Exhaust steam header is through exhaust steam recycling system
Pipeline connection increases steam turbine condenser；Joint water conservancy project system access heating network.
2. heating system is reclaimed in thermal power plant's exhaust steam according to claim 1, it is characterised in that joint water conservancy project system also includes
Heat exchangers for district heating, heat supply network water system；The heat supply network circulating water line of heat supply network water system sequentially passes through the first exhaust steam condenser, second weary
Vapour condenser, increasing steam turbine condenser, heat exchangers for district heating, heat supply network recirculated water supply water to heat supply network after heating.
3. heating system is reclaimed in thermal power plant's exhaust steam according to claim 1, it is characterised in that exhaust steam extraction system includes weary
Vapour draws special parts, exhaust steam and draws pipeline and exhaust steam header；Exhaust steam is drawn special parts and is fixedly installed on condenser throat side,
Exhaust steam fairlead is set on throat's side plate that exhaust steam extraction special parts are surrounded, and the condenser throat side inner side of perforate, which is set, to be added
Exhaust steam deflector is set on the inside of strong structure, exhaust steam fairlead；Exhaust steam draws special parts and draws pipeline connection exhaust steam connection by exhaust steam
Case；Exhaust steam fairlead is provided with control valve.
4. heating system is reclaimed in thermal power plant's exhaust steam according to claim 1, it is characterised in that exhaust steam header is provided with valve
Door, forms two-stage structure；Respectively high pressure section and low pressure stage, high pressure section connection high back pressure turbine condenser, low pressure stage connection
Low back pressure turbine condenser；The controlled opening of valve, realizes one section of overall structure.
5. heating system is reclaimed in thermal power plant's exhaust steam according to claim 2, it is characterised in that high back pressure Steam Turbine Through IP Admission
Steam discharge and low back pressure turbine intermediate pressure cylinder steam discharge distinguish connecting line to heat exchangers for district heating.
6. heating system is reclaimed in thermal power plant's exhaust steam according to claim 1, it is characterised in that exhaust steam recycling system is set
Put increasing steam turbine, high back pressure Steam Turbine Through IP Admission steam discharge connecting line to the power steam entrance for increasing steam turbine, exhaust steam header high pressure section
Connecting line is to the suction steam ports for increasing steam turbine, and the steam discharge connecting line for increasing steam turbine extremely increases steam turbine condenser vapour side.
7. heating system is reclaimed in thermal power plant's exhaust steam according to claim 1, it is characterised in that the first exhaust steam condenser, the
Two exhaust steam condensers, the water system for increasing steam turbine condenser, mutual sequential series, series operation；It is first exhaust steam condenser, second weary
Vapour condenser, the water system for increasing steam turbine condenser, respectively with bypass conduit, for realizing off-the-line bypass operation.
8. heating system, including two condensers of two steam turbines and correspondence, exhaust steam extraction system, exhaust steam are reclaimed in a kind of thermal power plant's exhaust steam
Recycling system, joint water conservancy project system；Two steam turbines have different operation back pressures, respectively high back pressure steam turbine, low back pressure
Steam turbine；It is characterized in that：Using exhaust steam extraction system, exhaust steam is drawn in perforate on two condensers respectively；Joint water conservancy project system
System includes the first exhaust steam condenser, the second exhaust steam condenser, increases steam turbine condenser；Low back pressure turbine exhaust steam fairlead directly connects
The first exhaust steam condenser is connect, high back pressure exhaust steam in steam turbine fairlead is directly connected to the second exhaust steam condenser；High back pressure steam turbine is weary
Vapour fairlead is also connected with the suction steam ports of exhaust steam recycling system, or low back pressure turbine exhaust steam fairlead also connects exhaust steam
The suction steam ports of recycling system；The steam drain connection of exhaust steam recycling system increases steam turbine condenser；Joint water conservancy project system
Access heating network.
9. the operation method of heating system is reclaimed in a kind of exhaust steam of thermal power plant according to claim 1, it is characterised in that thermal power plant
The exhaust steam of Steam Turbine is introduced to after exhaust steam header, is matched according to heated type condenser system configuring condition, and carbonated drink parameter
Situation, multichannel process is carried out to exhaust steam, reclaims exhaust steam heat；
A roads：Low parameter exhaust steam is directly entered the first exhaust steam condenser, for heating heat supply network backwater；
B roads：The exhaust steam of high parameter is directly entered the second exhaust steam condenser as thermal source, continues the first exhaust steam condenser of heating and goes out
Carry out heat supply network backwater；
C roads：By the use of high back pressure Steam Turbine Through IP Admission steam discharge as steam turbine power steam is increased, the exhaust steam of high parameter is aspirated, increases steam turbine
Steam discharge, which enters, increases steam turbine condenser, continues the second exhaust steam condenser of heating and comes out heat supply network backwater；
Just end is trembled with fear the phase in the winter time, and three-level heat hot water is provided to heat supply heat supply network；
Algid stage in the winter time, when Heating Season is run, high back pressure Steam Turbine Through IP Admission steam discharge and low back pressure turbine intermediate pressure cylinder steam discharge
Heat exchangers for district heating is respectively enterd, heating increases steam turbine condenser and comes out heat supply network backwater；After level Four is heated, hot net water has reached institute
Heating temperature is needed, outside networks of heat supply is sent to.
10. the operation method of heating system is reclaimed in thermal power plant's exhaust steam according to claim 9, it is characterised in that the first exhaust steam
Condenser, the second exhaust steam condenser, the water system for increasing steam turbine condenser, respectively with bypass conduit, for bypassing operation；
If the overhaul of steam turbine of low back pressure operation, the first exhaust steam condenser is split, and heat supply network backwater flows through the first exhaust steam condensing
Device bypasses the first exhaust steam condenser, and heat supply network backwater heating system is changed into three-level from level Four, i.e.,：Second exhaust steam condenser, increasing
Steam turbine condenser, heat exchangers for district heating；Temperature shortcoming is compensated by heat exchangers for district heating caused by first exhaust steam condenser off-the-line, steam turbine
Middle row's amount of drawing gas suitably increases；
If the overhaul of steam turbine of high back pressure operation, with two kinds of system configurations and operational mode；
First operational mode, the second exhaust steam condenser, increase steam turbine condenser be split, heat supply network backwater from the second exhaust steam condenser,
Increase steam turbine condenser to flow through or bypass the second exhaust steam condenser, increase steam turbine condenser, heat supply network backwater heating system is become by level Four
For two grades, i.e.,：First exhaust steam condenser, heat exchangers for district heating；Temperature caused by second exhaust steam condenser, increasing steam turbine condenser off-the-line
Shortcoming is compensated by heat exchangers for district heating, and extraction flow of steam suitably increases；
Second operational mode, the second exhaust steam condenser is split, and heat supply network backwater flows through or bypassed from the second exhaust steam condenser
Two exhaust steam condensers, heat supply network backwater heating system is changed into three-level from level Four, i.e.,：First exhaust steam condenser, increasing steam turbine condenser, heat
Net heater；Temperature shortcoming is compensated by heat exchangers for district heating caused by second exhaust steam condenser off-the-line, and extraction flow of steam suitably increases
Plus；Now, the power steam and suction exhaust steam that increase steam turbine both are from the low back pressure turbine steam turbine of operation, low back pressure turbine
Be adjusted to high back pressure operation.
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| CN108131709A (en) * | 2017-12-13 | 2018-06-08 | 联合瑞升（北京）科技有限公司 | A kind of increasing steam turbine steam exhaust recycling pumps combining heating system with full hydro-thermal |
| CN108180044A (en) * | 2018-01-07 | 2018-06-19 | 联合瑞升（北京）科技有限公司 | A kind of air water cooling cooperation increases steam turbine energy conserving system |
| CN108224534A (en) * | 2018-03-01 | 2018-06-29 | 申能吴忠热电有限责任公司 | A kind of indirect air cooling steam turbine high back pressure heating system |
| CN108301883A (en) * | 2017-12-09 | 2018-07-20 | 联合瑞升（北京）科技有限公司 | A kind of steam power plant's thermoelectricity decoupled system |
| CN108443939A (en) * | 2018-04-19 | 2018-08-24 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam residual heat suitable for water cooling Steam Turbine recycles heating system |
| CN108507367A (en) * | 2018-04-04 | 2018-09-07 | 山西省工业设备安装集团有限公司 | A kind of exhaust steam of electric power plant reuse means |
| CN108644860A (en) * | 2018-04-19 | 2018-10-12 | 联合瑞升（北京）科技有限公司 | A kind of larger thermal power air-cooling units exhaust steam residual heat recycling heating system |
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| CN108180044A (en) * | 2018-01-07 | 2018-06-19 | 联合瑞升（北京）科技有限公司 | A kind of air water cooling cooperation increases steam turbine energy conserving system |
| CN108224534A (en) * | 2018-03-01 | 2018-06-29 | 申能吴忠热电有限责任公司 | A kind of indirect air cooling steam turbine high back pressure heating system |
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| CN108443939B (en) * | 2018-04-19 | 2023-05-09 | 联合瑞升（北京）科技有限公司 | Exhaust steam waste heat recovery heating system suitable for water-cooling steam turbine unit |
| WO2019201281A1 (en) * | 2018-04-19 | 2019-10-24 | 联合瑞升（北京）科技有限公司 | Exhaust steam waste heat recovery heat supply system for air cooling unit of large-scale thermal power plant |
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| CN108443939A (en) * | 2018-04-19 | 2018-08-24 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam residual heat suitable for water cooling Steam Turbine recycles heating system |
| CN108644860B (en) * | 2018-04-19 | 2023-06-30 | 北京智为蓝科技有限公司 | Exhaust steam waste heat recovery heat supply system of air cooling unit of large-scale thermal power plant |
| CN109556161A (en) * | 2018-10-07 | 2019-04-02 | 联合瑞升（北京）科技有限公司 | A kind of multimachine interconnection exhaust steam residual heat recycling system |
| CN113339079A (en) * | 2021-06-01 | 2021-09-03 | 联合瑞升(天津)科技有限公司 | Multi-heat-source step heat supply energy-saving system of steam booster |
| CN113882918A (en) * | 2021-09-09 | 2022-01-04 | 联合瑞升（北京）科技有限公司 | Exhaust steam waste heat recovery and heat supply system of direct air cooling unit of thermal power plant |
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