CN110160113A - A kind of nuclear power plant's heating system and its heating method - Google Patents
A kind of nuclear power plant's heating system and its heating method Download PDFInfo
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- CN110160113A CN110160113A CN201910355144.1A CN201910355144A CN110160113A CN 110160113 A CN110160113 A CN 110160113A CN 201910355144 A CN201910355144 A CN 201910355144A CN 110160113 A CN110160113 A CN 110160113A
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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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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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
-
- 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
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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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
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Turbines (AREA)
Abstract
The present invention provides a kind of nuclear power plant's heating system and its heating methods, the heating system includes sequentially connected condenser, heating circuit, steam generator, steam turbine, separator, and be connected to separator outlet heating loop, steam turbine include high pressure cylinder, intermediate pressure cylinder and at least two low pressure (LP) cylinder；The condensed water that heating circuit is used to generate in condenser carries out heating for multiple times, and steam generator is used to the condensed water after heating being heated to be saturated vapor, and saturated vapor a part enters expansion work in high pressure cylinder；Separator is for removing the moisture in the steam exhaust being discharged after acting and being heated as superheated steam；Superheated steam a part enters expansion work in intermediate pressure cylinder and low pressure (LP) cylinder, and another part enters heating loop heating water and is supplied to user.Nuclear power plant's heating system and its heating method provided by the invention can be avoided problem of environmental pollution brought by thermal power plant's heating, have good technical effect.
Description
Technical field
The present invention relates to nuclear power heat supply process fields, and in particular to a kind of nuclear power plant's heating system and its heating method.
Background technique
Currently, the atmospheric haze outstanding problem in northern China winter heating season, becoming influences people's livelihood, national image
Hot issue.And coal-burning stove for heating is one of the main reason for forming haze, and in the city of northern central heating, coal heating
It will lead to the sulfur dioxide of air, dust particle acutely increases, and temperature is low, wind-force is small etc., and meteorological conditions more make haze savings not
It dissipates, results in the prolonged haze weather of northern area, there is an urgent need to promote cleaning to warm oneself.At the same time, with network load
The increasingly increase of peak-valley difference, electric system peak regulation situation are more and more severeer.Due to the growth of nuclear power specific gravity in power grid, power train
The demand for participating in peak load regulation network to nuclear power unit of uniting is increasingly enhanced, and the subsequent nuclear power unit that may require participates in peaking operation.Therefore,
It is necessary to propose a kind of novel heating scheme for relying on nuclear power plant.
Summary of the invention
The present invention is directed to above-mentioned the problems of the prior art, provides a kind of nuclear power plant's heating system and method, promotes
Clean energy resource heating, solves coal heating bring problem of environmental pollution.
The present invention is used to solve the technical solution of the above technical problem are as follows: on the one hand, a kind of nuclear power plant's heating system is provided,
It is described including passing through the sequentially connected condenser of pipeline, heating circuit, steam generator, steam turbine and separator
Steam turbine include high pressure cylinder, intermediate pressure cylinder and at least two low pressure (LP) cylinder, which is characterized in that further include being connected to the steam-water separation
The heating loop of reheater outlet；
The condenser generates condensed water for condensing turbine steam exhaust, and the heating circuit is used to carry out condensed water more
Secondary heating, the steam generator are used to the condensed water after heating for multiple times being heated to be saturated vapor, the saturated vapor one
Divide and enters expansion work in the high pressure cylinder；The separator is used to remove in the steam exhaust being discharged after high pressure cylinder acting
Moisture and be heated as superheated steam；Described superheated steam a part enters expansion in medium pressure cylinder and low pressure (LP) cylinder and does
Function, the steam exhaust after expansion work enter the condenser and are condensed into condensed water, and described superheated steam another part enters the confession
Warm circuit, for heating water and is supplied to user.
Preferably, the separator includes dehumidification device, level-one reheater and second level reheater, the steam
Saturated vapor a part of generator exports supplies the second level reheater as heating gas source；The dehumidification device is for removing
The moisture of steam therein is flowed into, the level-one reheater and second level reheater are respectively used to add inflow steam therein
Heat.
Preferably, the heating circuit includes sequentially connected gland heater, No.1 heater, No. two heaters, three
Number heater, No. four heaters, No. six heaters and No. seven heaters are respectively used to add into condensed water therein
Heat；It is also connected with oxygen-eliminating device between No. four heaters and No. six heaters, for removing into condensed water therein
Oxygen heating.
Preferably, the superheated steam that the second level reheater flows out first passes through more reheaing steam pipes and enters medium pressure
Cylinder, then expansion work in each low pressure (LP) cylinder is sequentially entered, it is cold that the steam exhaust after the low pressure (LP) cylinder acting flows into the condenser
It coagulates for condensed water；Reheating main steam valve and reheat control valve are provided on each reheaing steam pipe.
Preferably, the heating loop includes supplying from the condenser sequentially connected first that is exported to of the second level reheater
Warm regulating valve, surface heater, the second heating regulation valve, hydrophobic development unit, third heating regulation valve, heating drainage pump and the
Four heating regulation valves；The surface heater uses shell-and-tube heat exchanger, utilizes the superheated steam heating water.
Preferably, it is provided with radioactivity monitoring device between the 4th heating regulation valve and condenser, for monitoring
Heating loop is stated with the presence or absence of escape of radioactivity；The first heating regulation valve, the second heating regulation valve, third heating regulation valve
Monitoring the heating loop, there are be automatically closed when escape of radioactivity with one or more of the 4th heating regulation valve.
Preferably, medium pressure cylinder is provided with No. three extraction openings for connecting No. three heaters and connects described No. four and adds
No. four extraction openings of hot device heat condensed water in No. three heaters and No. four heaters for distinguishing steam extraction；
The low pressure (LP) cylinder is provided with the No.1 extraction opening for connecting the No.1 heater and connects No. two heaters
No. two extraction openings heat condensed water in the No.1 heater and No. two heaters for distinguishing steam extraction.
Preferably, No. six extraction openings and No. seven extraction openings are provided on the high pressure cylinder, No. six extraction openings connect institute
No. six heaters are stated, heat the condensed water in No. six heaters for steam extraction；No. seven extraction openings connection No. seven heating
Device heats the condensed water in No. seven heaters for steam extraction；
No. seven extraction openings are also connected with the level-one reheater, supply the level-one reheater as heating for steam extraction
Vapour source；A part of steam discharge of the high pressure cylinder enters the oxygen-eliminating device, for the condensed water in steam extraction heating oxygen-eliminating device.
Preferably, the heating system further include dehumidification device draining system, level-one reheater draining system and second level again
Hot device draining system；
The dehumidification device draining system is separately connected the dehumidification device and oxygen-eliminating device, for generate dehumidification device
Condensed water is hydrophobic to oxygen-eliminating device；The level-one reheater draining system is separately connected the level-one reheater and No. six heaters,
Hydrophobic to No. six heaters of condensed water for generating level-one reheater；The second level reheater draining system is separately connected institute
Second level reheater and No. seven heaters are stated, hydrophobic to No. seven heaters of the condensed water for generating second level reheater.
Preferably, the dehumidification device draining system, level-one reheater draining system and second level reheater draining system are equal
Including passing through the sequentially connected drain tank of pipeline, hydrophobic motor-driven valve and drain regulating valve, the aperture of each drain regulating valve
According to the liquid level adjust automatically of its drain tank being correspondingly connected with, each drain tank is also connected by urgent hydrophobic pipeline respectively
The condenser is provided with urgent motor-driven valve on the urgent hydrophobic pipeline, for the oxygen-eliminating device, No. six heaters and/
Or the liquid level of No. seven heaters is automatically closed the hydrophobic motor-driven valve that it is correspondingly connected with and opens described urgent when being more than preset height
Motor-driven valve, by the condensed water condenser.
Preferably, the dehumidification device draining system further include dehumidification device drainage pump and dehumidifying hydrophobic pipeline, it is described to remove
Recycling regulating valve is provided on wet hydrophobic pipeline；
The dehumidification device drainage pump is arranged between the drain tank and hydrophobic motor-driven valve of the dehumidification device draining system；
One end of the dehumidifying hydrophobic pipeline connects the drain tank of the dehumidification device draining system, described the another of hydrophobic pipeline that dehumidify
End connection oxygen-eliminating device；When there is low liquid level warning in the drain tank of the dehumidification device draining system, corresponding hydrophobic adjusting
Valve is automatically closed, and the recycling regulating valve automatically opens, to meet the minimum discharge requirement of the dehumidification device drainage pump.
Preferably, low pressure admission hydrophobic pipeline is also connected on the steam inlet pipe line of the low pressure (LP) cylinder, the low pressure admission is dredged
Low pressure admission drain tank is provided on water pipeline, low pressure admission drain regulating valve and two are separately positioned on the low pressure admission and dredge
The isolating valve at water regulating valve both ends, the low pressure admission drain regulating valve are provided with default aperture；The low pressure admission drain pipe
The other end of line connects the condenser, for excluding condensed water.
On the other hand, a kind of nuclear power plant's heating method is also provided, applied to above-mentioned nuclear power plant's heating system, including step
It is rapid:
The condensed water that condenser condensation generates is subjected to heating for multiple times by heating circuit；
The condensed water after heating for multiple times is heated to be saturated vapor, saturated vapor a part stream by steam generator
Enter expansion work in high pressure cylinder, a part flows into secondary heater as heating vapour source；
By separator remove the moisture in the steam exhaust being discharged after high pressure cylinder acting and be heated for
Superheated steam, described superheated steam a part enter expansion work in intermediate pressure cylinder and low pressure (LP) cylinder, and the steam exhaust after expansion work enters
Condenser is condensed into condensed water, and described superheated steam another part flows into heating loop, for heating water and is supplied to use
Family.
Implementing technical solution provided in an embodiment of the present invention can include the following benefits:
(1) present invention realizes nuclear power plant's heating and participates in the purpose of peaking operation, avoids brought by thermal power plant's heating
Problem of environmental pollution；
(2) steam after the present invention uses separator to heat can be improved vapor (steam) temperature as heating source
And moisture is discharged, improve heating heat exchange efficiency；Meanwhile hydrophobic arranged according to steam parameter to it of separator corresponds to
Heater in, condensing water temperature is improved, to improve nuclear power plant's efficiency；
(3) heating system constitutes closed cycle, steam and hydrophobic not outlets, only the pipeline belonging to system and sets
It is circulated in standby, meets potential radioactive control requirement.
(4) minimum aperture is arranged in the drain valve of turbine low pressure cylinder steam inlet pipe line, can drop to avoid drain valve frequent movement
Low drain valve probability of malfunction, to ensure the safe operation of steam turbine.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural block diagram of present invention nuclear power plant's heating system shown according to an exemplary embodiment；
Fig. 2 is the flow chart of present invention nuclear power plant's heating method shown according to an exemplary embodiment.
Specific embodiment
In order to enable those skilled in the art that the present invention is more clearly understood, below in conjunction with attached drawing and specific implementation
Example does further detailed description to the present invention.
Fig. 1 is a kind of structural block diagram of nuclear power plant's heating system shown according to an exemplary embodiment, as shown in Figure 1,
The heating system includes passing through the sequentially connected condenser 10 of pipeline, heating circuit 20, steam generator 30, steam turbine, carbonated drink
Separator/heater 50 and be connected to separator 50 outlet heating loop 70, steam turbine include high pressure cylinder 41, in
The low pressure (LP) cylinder 43 of cylinder pressure 42 and at least two；
Wherein, condenser 10 generates condensed water for condensing turbine steam exhaust, and heating circuit 20 is for producing condenser 10
Raw condensed water carries out heating for multiple times, and steam generator 30 is used to the condensed water after heating for multiple times being heated to be saturated vapor, institute
It states saturated vapor a part and enters expansion work in high pressure cylinder 41；After separator 50 is for removing the acting of high pressure cylinder 41
Moisture in the steam exhaust of discharge is simultaneously heated as superheated steam；Described superheated steam a part enters intermediate pressure cylinder 42 and low pressure (LP) cylinder
Expansion work in 43, the steam exhaust after 60 expansion work of steam turbine circuit enter condenser 10 and are condensed into condensed water, and the overheat is steamed
Vapour another part enters heating loop 70, for heating water and is supplied to user.
In the embodiment of the present disclosure, the saturated vapor connects high pressure cylinder 41, Mei Yigao by four high pressure admission pipelines 41
It is pressed into feed channel 41 and is provided with high pressure main stop valve 411 and septum valve 412, high pressure main stop valve 411 is high for protecting shutdown
Pressure regulating valve 412 is for adjusting steam flow.
Further, separator 50 includes dehumidification device 51, level-one reheater 52 and second level reheater 53, is steamed
Saturated vapor a part supply second level reheater 53 that vapour generator 30 exports is as heating vapour source；Dehumidification device 51 is for removing
The moisture of steam therein is flowed into, level-one reheater 52 and second level reheater 53 are respectively used to add inflow steam therein
Heat.
It should be noted that humidity is continuously increased steam during expansion work in high pressure cylinder, the steam discharge of high pressure cylinder
Humidity is up to 14.2%.If high pressure cylinder steam discharge is directly entered the acting of steam turbine circuit 60, cylinder blade will be generated serious
Erosion corrosion, while wet steam loss is also increased, therefore separator is set between high pressure cylinder 41 and intermediate pressure cylinder 42
50, on the one hand for removing in high pressure cylinder steam discharge about 98% moisture, on the other hand for improving the steam temperature into intermediate pressure cylinder
Degree, makes superheated steam.
Further, heating circuit 20 includes 22, No. two sequentially connected gland heater 21, No.1 heater heaters
23, No. three heaters 26 of heater 25, six of heater 24, four and No. seven heaters are respectively used to therein to flowing into
Condensed water is heated；It is also connected with oxygen-eliminating device 28 between No. four heaters 25 and No. six heaters 26, for into wherein
Condensed water carry out deoxygenation heating.
The superheated steam of the outlet of second level reheater 53 outflow first passes through reheaing steam pipe 44 and enters intermediate pressure cylinder 42, then successively
Expansion work in into each low pressure (LP) cylinder 43, the steam exhaust after the last one low pressure (LP) cylinder expansion work, which enters in condenser 10, to be condensed into
Condensed water；Reheating main steam valve 441 and reheat control valve 442 are provided on each reheaing steam pipe 44, reheating main steam valve 441 is used
It is turned off in protection, reheat control valve 442 is for adjusting steam flow；Preferably, the quantity of low pressure (LP) cylinder 43 is set as two or three
A, the quantity of reheaing steam pipe 44 is set as four.
Further, heating loop 70 includes supplying from the condenser 10 sequentially connected first that is exported to of second level reheater 53
Warm regulating valve 71, surface heater 72, the second heating regulation valve 73, hydrophobic development unit 74, third heating regulation valve 75, heating
The other end of drainage pump 76 and the 4th heating regulation valve 77, the 4th heating regulation valve 77 connects condenser 10；First heating regulation
Valve 71 is used to adjust the superheated steam into surface heater 72, and surface heater 72 uses shell-and-tube heat exchanger, benefit
With the superheated steam heating water, heating water is supplied to user, and steam drainage enters hydrophobic development unit 74, using heating
Drainage pump 76 eventually enters into condenser 10.
When there is user to need nuclear power plant to heat or nuclear power plant is needed to participate in peaking operation, according to the actual situation, can close
Small 442 aperture of reheat control valve into intermediate pressure cylinder, the appropriate regulating valve opened in heating loop 70 after heating water, supply
Warm water is supplied to user.
For the radioactive release for having found that it is likely that appearance in time, it is additionally provided between the 4th heating regulation valve 77 and condenser 10
Radioactivity monitoring device 80, for monitoring in heating loop 70 with the presence or absence of escape of radioactivity；When monitoring to deposit in heating loop
In escape of radioactivity, the first heating regulation valve 71, the second heating regulation valve 73, third heating regulation valve 75 and the 4th are for warm color tone
One or more of section valve 77 is automatically closed, and radioactive substance can be prevented to be discharged into heat supply network end user.
In the embodiment of the present disclosure, separator 50 is arranged two, and two separators 50 are connected in parallel
High pressure cylinder 41, and a heating loop 70 is provided on the reheaing steam pipe 44 of two separators 50 outlet.
Further, to guarantee condensed water effluent amount, temperature requirement under nuclear island declared working condition, intermediate pressure cylinder 42 is provided with connection
No. four extraction openings of No. four heaters 25 of No. three extraction openings and connection of No. three heaters 24, add for distinguishing steam extraction heating three
Condensed water in hot device 24 and No. four heaters 25；
Low pressure (LP) cylinder 43 is provided with No. two steam extractions of No. two heaters of No.1 extraction opening and connection of connection No.1 heater 22
Mouthful, for distinguishing the condensed water in steam extraction heating No.1 heater 22 and No. two heaters 23；
No. six extraction openings and No. seven extraction openings are provided on high pressure cylinder 41, No. six extraction openings connect No. six heaters 26, use
The condensed water in No. six heaters 26 is heated in steam extraction；No. seven extraction openings connect No. seven heaters 27, heat No. seven for steam extraction
Condensed water in heater 27, No. seven extraction openings are also connected with level-one reheater 52, supply 52 conduct of level-one reheater for steam extraction
Heat vapour source；A part of steam discharge of high pressure cylinder 41 enters oxygen-eliminating device 28, for the condensed water in steam extraction heating oxygen-eliminating device 28.
In the embodiment of the present disclosure, also set on the pipeline between the heater and oxygen-eliminating device of each corresponding connection of extraction opening
It is equipped with an extraction check valve, for preventing steam extraction from flowing backwards.
Further, which further includes dehumidification device draining system 54, level-one reheater draining system 55 and two
Grade reheater draining system 56；Wherein, dehumidification device draining system 54 is separately connected dehumidification device 51 and oxygen-eliminating device 28, and being used for will
The condensed water that dehumidification device 51 generates is hydrophobic to oxygen-eliminating device 28；Level-one reheater draining system 55 is separately connected level-one reheater 52
With No. six heaters 26, hydrophobic to No. six heaters 26 of condensed water for generating level-one reheater 52；Second level reheater is dredged
Water system 56 is separately connected second level reheater 53 and No. seven heaters 27, and the condensed water for generating secondary heater 53 is hydrophobic
To No. seven heaters 27.
Specifically, dehumidification device draining system 54, level-one reheater draining system 55 and second level reheater draining system 56
It include by the sequentially connected drain tank 57 of pipeline, hydrophobic motor-driven valve 58 and drain regulating valve 59, each drain regulating valve 59
Aperture according to the liquid level adjust automatically of its drain tank being correspondingly connected with, each drain tank 57 also passes through urgent hydrophobic pipeline respectively
Condenser 10 is connected, is provided with urgent motor-driven valve on urgent hydrophobic pipeline, when 28, No. six heaters 26 of oxygen-eliminating device and/or No. seven
When heater 27 liquid level occurs more than preset height, its hydrophobic motor-driven valve 58 being correspondingly connected with is automatically closed, and open its correspondence
The urgent motor-driven valve of connection, condensed water is hydrophobic into condenser 10.
Dehumidification device draining system 54 further includes dehumidification device drainage pump 541 and dehumidifying hydrophobic pipeline 542, and dehumidify drain pipe
Recycling regulating valve 543 is provided on line 542；The setting of dehumidification device drainage pump 541 drain tank 57 and hydrophobic electrodynamic pump 58 it
Between；, the drain tank 57 of one end connection dehumidification device draining system 54 of dehumidifying hydrophobic pipeline 542, the another of hydrophobic pipeline 542 of dehumidifying
One end connects oxygen-eliminating device (28), corresponding to dredge when low liquid level warning occurs in the drain tank 57 of dehumidification device draining system 54
Water regulating valve 59 is automatically closed, and recycling regulating valve 543 automatically opens, to meet the minimum discharge of dehumidification device drainage pump 541
It is required that.
In practical applications, the condensed water separated from 51 shell of dehumidification device is hydrophobic to correspondence under gravity
Drain tank in, using dehumidification device drainage pump 541, hydrophobic motor-driven valve 58 and drain regulating valve 59 enter position it is higher
Oxygen-eliminating device 28 in.The condensed water of level-one reheater 52 and second level reheater 53 is discharged into respective dredge by the effect of gravity
In water tank, using corresponding hydrophobic motor-driven valve 58 and drain regulating valve 59, final hydrophobic to No. six heaters 26 and seven respectively
In number heater 27.
Further, since the hydrophobic amount of 43 steam inlet pipe line of low pressure (LP) cylinder is larger, on the steam inlet pipe line of low pressure (LP) cylinder 43 also
It is connected with low pressure admission hydrophobic pipeline 45, low pressure admission drain tank 451, low pressure admission are provided on low pressure admission hydrophobic pipeline 45
Drain regulating valve 452 and two are separately positioned on the isolating valve at 452 both ends of low pressure admission drain regulating valve, the hydrophobic tune of low pressure admission
Section valve 452 is provided with default aperture, and default aperture is configured by the hydrophobic amount of 10%-20%, this aperture can be according to practical feelings
Condition is adjusted, and avoids regulating valve frequent operation；The other end of low pressure admission hydrophobic pipeline 45 connects condenser 10, for being discharged
Condensed water；When liquid level high RST occurs in low pressure admission drain tank 451, low pressure admission drain regulating valve 452 is automatically opened, and works as liquid
When position high RST disappears, low pressure admission drain regulating valve 452 is automatically closed after being delayed 60 seconds, since valve presets depositing for aperture
Still there is small flow hydrophobic by low pressure admission drain regulating valve 452 at this time.
It should be noted that steam generator 30 plus thermogenetic saturated vapor have potential radioactivity, the disclosure is implemented
Example is required using secondary circuit steam as steam is heated to meet potential radioactive control, steam and hydrophobic
Not outlet only circulates in the pipeline belonging to the heating system and equipment, sets up isolated border by pipeline, container
Boundary constitutes closed cycle.Surface heater uses shell-and-tube heat exchanger, belongs to indirect heat exchange, so that the radiation of steam side
Property does not diffuse into heating hot water side.
Fig. 2 is a kind of flow diagram of nuclear power plant's heating method shown according to an exemplary embodiment, is applied to upper
State in heating system, as shown in connection with fig. 2, the heating method comprising steps of
S1, the condensed water that the condensation of condenser 10 generates is carried out by heating for multiple times by heating circuit 20；
S2, the condensed water after heating for multiple times is heated to be by saturated vapor, the saturated vapor one by steam generator 30
Part flows into expansion work in high pressure cylinder 41, and a part flows into secondary heater 53 as heating vapour source；
S3, the moisture in the steam exhaust being discharged after high pressure cylinder 41 does work is removed by separator 50 and is heated
For superheated steam, described superheated steam a part enters expansion work in intermediate pressure cylinder 42 and low pressure (LP) cylinder 43, weary after expansion work
Vapour enters condenser 10 and is condensed into condensed water, and described superheated steam another part flows into heating loop 70, is used for heating water
And it is supplied to user.
In conclusion nuclear power plant's heating may be implemented in a kind of nuclear power plant's heating system proposed by the present invention and its heating method
And the purpose of peaking operation is participated in, avoid problem of environmental pollution brought by thermal power plant's heating；On the other hand, which makes
Steam after using separator to heat can be improved vapor (steam) temperature and moisture be discharged, improve confession as heating source
Warm heat exchange efficiency；Meanwhile the hydrophobic of separator is arranged according to steam parameter into corresponding heater, and condensation is improved
Coolant-temperature gage, to improve nuclear power plant's efficiency.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (13)
1. a kind of nuclear power plant's heating system, including pass through the sequentially connected condenser of pipeline (10), heating circuit (20), steam hair
Raw device (30), steam turbine and separator (50), the steam turbine include high pressure cylinder (41), intermediate pressure cylinder (42) and at least
Two low pressure (LP) cylinders (43), which is characterized in that further include the heating loop for being connected to the separator (50) outlet
(70)；
The condenser (10) for condensing turbine steam exhaust generate condensed water, the heating circuit (20) be used for by condensed water into
Row heating for multiple times, the steam generator (30) are used to the condensed water after heating for multiple times being heated to be saturated vapor, the saturation
Steam a part enters the high pressure cylinder (41) interior expansion work；The separator (50) is for removing high pressure cylinder
(41) moisture after doing work in the steam exhaust that is discharged simultaneously is heated as superheated steam；Described superheated steam a part enters in described
Cylinder pressure (42) and low pressure (LP) cylinder (43) interior expansion work, the steam exhaust after expansion work enter the condenser (10) and are condensed into condensation
Water, described superheated steam another part enter the heating loop (70), for heating water and are supplied to user.
2. heating system according to claim 1, which is characterized in that the separator (50) includes dehumidifying dress
Set (51), level-one reheater (52) and second level reheater (53), saturated vapor a part of steam generator (30) outlet
The second level reheater (53) is supplied as heating gas source；The dehumidification device (51) is for removing the water for flowing into steam therein
Point, the level-one reheater (52) and second level reheater (53) are respectively used to heat inflow steam therein.
3. heating system according to claim 2, which is characterized in that the heating circuit (20) includes sequentially connected axis
Seal heater (21), No.1 heater (22), No. two heaters (23), No. three heaters (24), No. four heaters (25), No. six
Heater (26) and No. seven heaters (27) are respectively used to heat into condensed water therein；No. four heating
Oxygen-eliminating device (28) are also connected between device (25) and No. six heaters (26), for adding into condensed water therein progress deoxygenation
Heat.
4. heating system according to claim 3, which is characterized in that the superheated steam of second level reheater (53) outflow
Reheaing steam pipe (44) are first passed through into medium pressure cylinder (42), then sequentially enters expansion in each low pressure (LP) cylinder (43) and does
Function, the steam exhaust after low pressure (LP) cylinder (43) acting flow into the condenser (10) and are condensed into condensed water；Each reheated steam
Reheating main steam valve (441) and reheat control valve (442) are provided on pipeline (44).
5. heating system according to claim 2, which is characterized in that the heating loop (70) include from the second level again
Hot device (53) is exported to the sequentially connected first heating regulation valve (71) of condenser (10), surface heater (72), second
Heating regulation valve (73), hydrophobic development unit (74), third heating regulation valve (75), heating drainage pump (76) and the 4th heating regulation
Valve (77)；The surface heater (72) uses shell-and-tube heat exchanger, utilizes the superheated steam heating water.
6. heating system according to claim 5, which is characterized in that the 4th heating regulation valve (77) and condenser
(10) radioactivity monitoring device (80) are provided between, for monitoring the heating loop (70) with the presence or absence of escape of radioactivity；
The first heating regulation valve (71), the second heating regulation valve (73), third heating regulation valve (75) and the 4th heating regulation valve
One or more of (77) monitoring the heating loop (70), there are be automatically closed when escape of radioactivity.
7. heating system according to claim 4, which is characterized in that medium pressure cylinder (42) is provided with connection described No. three
No. three extraction openings of heater (24) and No. four extraction openings for connecting No. four heaters (25), for distinguishing steam extraction heating institute
State the condensed water in No. three heaters (24) and No. four heaters (25)；
The low pressure (LP) cylinder (43) is provided with the No.1 extraction opening for connecting the No.1 heater (22) and connects No. two heating
No. two extraction openings of device (23), for distinguishing the condensation in the steam extraction heating No.1 heater (22) and No. two heaters (23)
Water.
8. heating system according to claim 3, which is characterized in that be provided with No. six extraction openings on the high pressure cylinder (41)
With No. seven extraction openings, No. six extraction openings connect No. six heaters (26), heat No. six heaters (26) for steam extraction
In condensed water；No. seven extraction openings connect No. seven heaters (27), heat in No. seven heaters (27) for steam extraction
Condensed water；
No. seven extraction openings are also connected with the level-one reheater (52), supply level-one reheater (52) conduct for steam extraction
Heat vapour source；A part of steam discharge of the high pressure cylinder (41) enters the oxygen-eliminating device (28), for steam extraction heating oxygen-eliminating device (28)
In condensed water.
9. heating system according to claim 3, which is characterized in that further include dehumidification device draining system (54), level-one
Reheater draining system (55) and second level reheater draining system (56)；
The dehumidification device draining system (54) is separately connected the dehumidification device (51) and oxygen-eliminating device (28), for the dress that will dehumidify
The condensed water for setting (51) generation is hydrophobic to oxygen-eliminating device (28)；The level-one reheater draining system (55) is separately connected the level-one
Reheater (52) and No. six heaters (26), hydrophobic to No. six heaters of condensed water for generating level-one reheater (52)
(26)；The second level reheater draining system (56) is separately connected the second level reheater (53) and No. seven heaters (27), uses
In hydrophobic to No. seven heaters (27) of the condensed water for generating second level reheater (53).
10. heating system according to claim 9, which is characterized in that the dehumidification device draining system (54), level-one are again
Hot device draining system (55) and second level reheater draining system (56) include by the sequentially connected drain tank of pipeline (57), dredge
Water motor-driven valve (58) and drain regulating valve (59), the aperture of each drain regulating valve (59) are correspondingly connected with hydrophobic according to it
The liquid level adjust automatically of case (57), each drain tank (57) also connect the condenser by urgent hydrophobic pipeline respectively
(10), it is provided with urgent motor-driven valve on the urgent hydrophobic pipeline, in the oxygen-eliminating device (28), No. six heaters (26)
And/or hydrophobic motor-driven valve (58) that it is correspondingly connected with is automatically closed simultaneously when being more than preset height in the liquid level of No. seven heaters (27)
The urgent motor-driven valve is opened, by the condensed water condenser (10).
11. heating system according to claim 10, which is characterized in that the dehumidification device draining system (54) further includes
Dehumidification device drainage pump (541) and dehumidifying hydrophobic pipeline (542) are provided with recycling tune on the dehumidifying hydrophobic pipeline (542)
It saves valve (543)；
Drain tank (57) and hydrophobic electricity of dehumidification device drainage pump (541) setting in the dehumidification device draining system (54)
Between dynamic valve (58)；One end of dehumidifying hydrophobic pipeline (542) connects the drain tank of the dehumidification device draining system (54)
(57), the other end of dehumidifying hydrophobic pipeline (542) connects oxygen-eliminating device (28)；When the dehumidification device draining system (54)
When low liquid level warning occurs in drain tank (57), corresponding drain regulating valve (59) is automatically closed, the recycling regulating valve
(543) it automatically opens, to meet the minimum discharge requirement of the dehumidification device drainage pump (541).
12. heating system according to claim 4, which is characterized in that also connect on the steam inlet pipe line of the low pressure (LP) cylinder (43)
Be connected to low pressure admission hydrophobic pipeline (45), be provided on the low pressure admission hydrophobic pipeline (45) low pressure admission drain tank (451),
Low pressure admission drain regulating valve (452) and two are separately positioned on the isolation at low pressure admission drain regulating valve (452) both ends
Valve, the low pressure admission drain regulating valve (452) are provided with default aperture；The other end of the low pressure admission hydrophobic pipeline (45)
The condenser (10) are connected, for excluding condensed water.
13. a kind of nuclear power plant's heating method is applied to such as the described in any item nuclear power plant's heating systems of claim 1-12, spy
Sign is, comprising steps of
The condensed water that condenser (10) condensation generates is subjected to heating for multiple times by heating circuit (20)；
The condensed water after heating for multiple times is heated to be saturated vapor, saturated vapor a part stream by steam generator (30)
Enter high pressure cylinder (41) interior expansion work, a part flows into secondary heater (53) as heating vapour source；
The moisture in the steam exhaust being discharged after high pressure cylinder (41) acting is removed by separator (50) and is added
Heat is superheated steam, and described superheated steam a part enters intermediate pressure cylinder (42) and low pressure (LP) cylinder (43) interior expansion work, expansion work
Steam exhaust afterwards enters condenser (10) and is condensed into condensed water, and described superheated steam another part flows into heating loop (70), is used for
Heating water is simultaneously supplied to user.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177695A (en) * | 2020-09-29 | 2021-01-05 | 西安热工研究院有限公司 | Small pressurized water reactor power generation system adopting micro superheated steam |
| CN114110736A (en) * | 2021-11-25 | 2022-03-01 | 广西电网有限责任公司电力科学研究院 | Non-contact heat exchange steam supply method for extracting steam at different steam temperatures |
| CN114635766A (en) * | 2022-01-06 | 2022-06-17 | 国核电力规划设计研究院有限公司 | Valve setting and control system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN114856726A (en) * | 2022-05-20 | 2022-08-05 | 上海交通大学 | Method for determining exhaust steam volume flow and humidity of saturated steam turbine in real time |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003270383A (en) * | 2002-03-15 | 2003-09-25 | Toshiba Corp | Atomic power using heat supply system |
| CN101908386A (en) * | 2010-06-21 | 2010-12-08 | 华北电力大学 | Pressurized water reactor and high-temperature gas cooled reactor-based hybrid thermodynamic cycle system |
| CN105488324A (en) * | 2014-10-13 | 2016-04-13 | 中广核工程有限公司 | Type selection method and system for safety valve of feed water heater in nuclear plant |
| CN106523044A (en) * | 2016-12-22 | 2017-03-22 | 广东核电合营有限公司 | Cylinder temperature acceleration cooling method of nuclear power station steam turbine high/medium-pressure cylinder |
| CN106898400A (en) * | 2017-03-27 | 2017-06-27 | 中核核电运行管理有限公司 | The remote region thermal energy supply system of large commercial nuclear energy mesohigh steam and method |
| CN107420878A (en) * | 2017-03-28 | 2017-12-01 | 中国核电工程有限公司 | It is a kind of to carry out vapour, heat, the system of CCHP using nuclear energy |
-
2019
- 2019-04-29 CN CN201910355144.1A patent/CN110160113A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003270383A (en) * | 2002-03-15 | 2003-09-25 | Toshiba Corp | Atomic power using heat supply system |
| CN101908386A (en) * | 2010-06-21 | 2010-12-08 | 华北电力大学 | Pressurized water reactor and high-temperature gas cooled reactor-based hybrid thermodynamic cycle system |
| CN105488324A (en) * | 2014-10-13 | 2016-04-13 | 中广核工程有限公司 | Type selection method and system for safety valve of feed water heater in nuclear plant |
| CN106523044A (en) * | 2016-12-22 | 2017-03-22 | 广东核电合营有限公司 | Cylinder temperature acceleration cooling method of nuclear power station steam turbine high/medium-pressure cylinder |
| CN106898400A (en) * | 2017-03-27 | 2017-06-27 | 中核核电运行管理有限公司 | The remote region thermal energy supply system of large commercial nuclear energy mesohigh steam and method |
| CN107420878A (en) * | 2017-03-28 | 2017-12-01 | 中国核电工程有限公司 | It is a kind of to carry out vapour, heat, the system of CCHP using nuclear energy |
Non-Patent Citations (2)
| Title |
|---|
| 山西省电力工业局: "《汽轮机设备运行 初级工》", 31 December 1996, 中国电力出版社 * |
| 邹正宇等: "《CANDU-6核电***与运行、常规岛*** 1》", 30 June 2010, 原子能出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177695A (en) * | 2020-09-29 | 2021-01-05 | 西安热工研究院有限公司 | Small pressurized water reactor power generation system adopting micro superheated steam |
| CN114110736A (en) * | 2021-11-25 | 2022-03-01 | 广西电网有限责任公司电力科学研究院 | Non-contact heat exchange steam supply method for extracting steam at different steam temperatures |
| CN114110736B (en) * | 2021-11-25 | 2023-02-28 | 广西电网有限责任公司电力科学研究院 | Non-contact heat exchange steam supply method for extracting steam at different steam temperatures |
| CN114635766A (en) * | 2022-01-06 | 2022-06-17 | 国核电力规划设计研究院有限公司 | Valve setting and control system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN114635766B (en) * | 2022-01-06 | 2024-02-09 | 国核电力规划设计研究院有限公司 | Valve setting and controlling system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN114856726A (en) * | 2022-05-20 | 2022-08-05 | 上海交通大学 | Method for determining exhaust steam volume flow and humidity of saturated steam turbine in real time |
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