CN110131003A - System and method for starting and stopping secondary loop of high-temperature gas cooled reactor nuclear power unit - Google Patents

System and method for starting and stopping secondary loop of high-temperature gas cooled reactor nuclear power unit Download PDF

Info

Publication number
CN110131003A
CN110131003A CN201910498205.XA CN201910498205A CN110131003A CN 110131003 A CN110131003 A CN 110131003A CN 201910498205 A CN201910498205 A CN 201910498205A CN 110131003 A CN110131003 A CN 110131003A
Authority
CN
China
Prior art keywords
valve group
valve
steam
pressure
entrance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910498205.XA
Other languages
Chinese (zh)
Other versions
CN110131003B (en
Inventor
马晓珑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Thermal Power Research Institute Co Ltd
Huaneng Group Technology Innovation Center Co Ltd
Original Assignee
Xian Thermal Power Research Institute Co Ltd
Huaneng Group Technology Innovation Center Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Thermal Power Research Institute Co Ltd, Huaneng Group Technology Innovation Center Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Priority to CN201910498205.XA priority Critical patent/CN110131003B/en
Publication of CN110131003A publication Critical patent/CN110131003A/en
Application granted granted Critical
Publication of CN110131003B publication Critical patent/CN110131003B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
    • 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
    • F01K13/02—Controlling, e.g. stopping or starting
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/345—Control or safety-means particular thereto
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/38—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/44—Use of steam for feed-water heating and another purpose
    • 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
    • F22D1/325—Schematic arrangements or control devices therefor
    • 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
    • F22D11/00—Feed-water supply not provided for in other main groups
    • F22D11/02—Arrangements of feed-water pumps
    • F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
    • 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
    • Y02E30/00—Energy generation of nuclear origin

Landscapes

  • 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)
  • Water Supply & Treatment (AREA)
  • Control Of Turbines (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

A system and a method for starting and stopping a secondary loop of a high-temperature gas cooled reactor nuclear power unit comprise a high-pressure cylinder, a low-pressure cylinder, sixteen valve groups, a steam-water separator, an evaporator, an external steam source, a bypass regulating valve, an auxiliary steam header, a high-pressure heater, a condenser, an auxiliary steam user, a unit drainage tank, a water feed pump, a deaerator, a low-pressure heater, a condensate pump, a condensate and water system and a fine processing system. The method comprises the following main steps: 1) at the initial stage of starting the unit, steam is supplied to the auxiliary steam header from an external steam source; 2) recovering water in the steam-water separator to a deaerator; 3) recovering bypass steam to the low-pressure heater, the auxiliary steam header and the high-pressure heater; 4) when the steam extraction pressure of the steam turbine is enough, the low-pressure heater, the auxiliary steam header and the high-pressure heater extract steam from the steam turbine to supply steam; 5) in the process of stopping the two loops, along with the reduction of the load of the unit, when the steam extraction pressure of the steam turbine is insufficient, steam is supplied to the low-pressure heater, the auxiliary steam header and the high-pressure heater by the steam in front of the bypass regulating valve.

Description

A kind of system and method for high temperature gas cooled reactor nuclear power unit secondary circuit start and stop
Technical field
The invention belongs to technical field of nuclear power, and in particular to a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop And method.
Background technique
The current evaporator inlet water supply of HTGR Nuclear Power Plant by low-pressure heater, oxygen-eliminating device, high-pressure heater come Heating, meets the requirement of evaporator inlet water temperature, low-pressure heater, oxygen-eliminating device, high-pressure heater normal vapour source be all steamer The steam extraction of machine；The main vapour source of auxiliary vapour is extracted steam from turbine, and standby steam source is the steam that electric boiler generates；In steam-water separator It is hydrophobic, in water quality qualification heel row toward condenser.
System is primarily present following deficiency at present:
1) before the non-on-load of steam turbine, steam extraction can not be obtained, and evaporator feedwater can only be by starting trouble to removing The heating of oxygen device steam supply, starting trouble need long-play, costly, heating effect is poor and unstable；
2) unit is in initial start stage, and a large amount of steam to condenser, are discharged into the steam of condenser by bypass row, heat without Method is utilized, and is the waste of energy；
3) hydrophobic in steam-water separator, after unit starting, there is certain temperature and pressure, after being discharged into condenser, Heat possessed by these water can not recycle, and all waste.
4) steam and hot water are discharged into condenser, improve the temperature of condensed water, reduce the efficiency of steam turbine；
5) the excessively high operation that will affect precision processing of the temperature of condensed water；
6) steam enters after condenser becomes condensed water, also to squeeze into oxygen-eliminating device using condensate pump, increase condensed water The wasted work of pump；
7) when shutting down not shutdown operating condition, after halt turbines, steam extraction is all lost, and high-pressure heater, low pressure add Hot device and oxygen-eliminating device vapour source all lose, and evaporator inlet feed temperature sharply declines, and influence the safety of evaporator；
8) when carrying out single heap stopping operating condition, steam turbine load reduces 50%, and extraction pressure, flow are reduced, operation reaction Heap inlet temperature reduces suddenly, influences the safety of evaporator；
9) in unit normal operation, it is the waste of energy that electric boiler, which is needed in hot stand-by duty,；
10) even if electric boiler is in hot stand-by duty, but can need at least effectively to auxiliary vapour header steam supply from hot standby use 15 minutes or more, this period of vapour source is lost in auxiliary vapour header, oxygen-eliminating device loses heating, and axle envelope loses vapour source, pacifies to unit Row for the national games and further starting impact.
Summary of the invention
It is an object of the invention to be directed to the deficiency of current machine set system, a kind of high temperature gas cooled reactor nuclear power unit two is provided The system and method for circuit start and stop.
In order to achieve the above objectives, the present invention adopts the following technical scheme that realize:
A kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop, including the draining of evaporator, steam-water separator, unit Slot, oxygen-eliminating device, condenser, the first valve group, the second valve group, third valve group, the 4th valve group, the 5th valve group, the 6th Valve group, the 7th valve group and the 8th valve group；Wherein,
The outlet of evaporator connects the entrance in the first valve group, and the outlet of the first valve group is divided into two strands, and first strand connects The outlet of the entrance of second valve group, second strand of entrance connect in third valve group, third valve group connects in steam-water separator Entrance, the first outlet of steam-water separator connect the entrance in the 4th valve group, and the second outlet of steam-water separator connects in the 5th valve The entrance of door group, the outlet of the 5th valve group are divided into three strands, and first strand of entrance connect in the 6th valve group, second strand connects the 7th The entrance of valve group, third stock connect the entrance in the 8th valve group, and the outlet of the 6th valve group connects the entrance in unit rhone, The outlet of 7th valve group connects the first entrance in condenser, and the outlet of the 8th valve group connects the first entrance in oxygen-eliminating device.
A further improvement of the present invention lies in that the first valve group, the 4th valve group and the 5th valve group by shut-off valve and Regulating valve composition, the second valve group, third valve group, the 6th valve group, the 7th valve group and the 8th valve group are by shut-off valve Composition.
A further improvement of the present invention lies in that further including high pressure cylinder, low pressure (LP) cylinder, bypass valve, high-pressure heater, auxiliary vapour Header, low-pressure heater, the 9th valve group, the tenth valve group, the 11st valve group, the 12nd valve group, the 13rd valve group With the 14th valve group；Wherein,
The outlet of second valve group and the 4th valve group is divided into two strands after converging, first strand of entrance for being connected to high pressure cylinder, and Two strands of entrances for being connected to bypass valve are coupled with the 9th valve group, from the pipeline upper connector road before bypass valve The entrance of 12 valve groups, the 14th valve group, the first outlet of high pressure cylinder are connected to the entrance of the tenth valve group, and the of high pressure cylinder Two outlets are connected to the entrance of the 11st valve group, and the third outlet of high pressure cylinder is connected to the entrance of low pressure (LP) cylinder, and the first of low pressure (LP) cylinder goes out Mouth is connected to the entrance of the 13rd valve group, and the outlet of the 9th valve group and the tenth valve group, which converges, is followed by the of high-pressure heater One entrance, the outlet of the 11st valve group and the 12nd valve group converge the first entrance for being followed by auxiliary vapour header, the 14th valve The outlet of door group and the 13rd valve group converges the first entrance for being followed by low-pressure heater, and the second outlet of low pressure (LP) cylinder is connected to solidifying The second entrance of vapour device, the outlet of bypass valve are connected to the third entrance of condenser, and the outlet of low-pressure heater is connected to deoxygenation The outlet of the second entrance of device, high-pressure heater connects the entrance in evaporator.
A further improvement of the present invention lies in that the 9th valve group, the tenth valve group, the 11st valve group, the 12nd valve Group, the 13rd valve group and the 14th valve group are made of shut-off valve, regulating valve and non-return valve.
A further improvement of the present invention lies in that further including condensate pump, feed pump, auxiliary vapour user, external vapour source, the 15th Valve group, the 16th valve group, precision processing system, solidifying water charging system and the 17th valve group；Wherein,
Solidifying water charging system is connected to the 4th entrance of condenser, and the outlet of condenser is connected to the entrance of condensate pump, condensed water The outlet of pump is divided into two strands, first strand of entrance for being connected to the 16th valve group, second strand of entrance for being connected to precision processing system, and the tenth The outlet of six valve groups and the outlet of precision processing system converge the second entrance for being followed by low-pressure heater, and the first of auxiliary vapour header Outlet is connected to the entrance of the 15th valve group, and the second outlet of auxiliary vapour header is connected to the entrance of auxiliary vapour user, and external vapour source goes out Mouth is connected to the second entrance of auxiliary vapour header, and the outlet of the 15th valve group is connected to the third entrance of oxygen-eliminating device, the outlet of oxygen-eliminating device It is connected to the entrance of feed pump, the outlet of feed pump is connected to the entrance of the 17th valve group, and the outlet of the 17th valve group is connected to height Press the second entrance of heater.
A further improvement of the present invention lies in that auxiliary vapour user includes the user that axle envelope needs auxiliary vapour, external vapour source includes energy The electric boiler and adjacent unit of vapour source are provided to unit.
A further improvement of the present invention lies in that the 15th valve group, the 17th valve group are by shut-off valve and adjust valve group At the 16th valve group is made of shut-off valve.
A kind of method of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop, this method are based on a kind of above-mentioned high temperature gas-cooled core The system of motor group secondary circuit start and stop, comprising the following steps:
1) in secondary circuit start-up course, from external vapour source to auxiliary vapour header steam supply, steam by the 15th valve group into Enter to oxygen-eliminating device and heat water supply, the water in oxygen-eliminating device enters evaporation by feed pump, the 17th valve group and high-pressure heater Device, the second valve group are in close state, and the outlet working medium of evaporator enters carbonated drink by the first valve group, third valve group Separator maintains pressure required for evaporator as the regulating valve in the first valve group, is tieed up by the regulating valve in the 5th valve group The water level for holding steam-water separator, by the pressure of the regulating valve adjustment steam-water separator in the 4th valve group, auxiliary vapour user uses auxiliary The steam of vapour header；
2) before the drain water quality in steam-water separator is not up to recycling standard, the water in steam-water separator passes through the 5th valve Door group and the 6th valve group drain into unit rhone；
3) water quality in steam-water separator reaches the pressure after recycling standard and in steam-water separator not higher than oxygen-eliminating device Pressure before, the water in steam-water separator drains into condenser by the 5th valve group and the 7th valve group；
4) drain water quality in steam-water separator reaches the pressure after recycling standard and in steam-water separator and is higher than deoxygenation The pressure of device, hydrophobic in steam-water separator drain into oxygen-eliminating device by the 5th valve group and the 8th valve group；
5) steam in steam-water separator enters condenser by the 4th valve group and bypass valve, by bypass valve Pressure before controlling bypass valve；
6) after the pressure before bypass valve is higher than low-pressure heater vapour lateral pressure, cutting in the 14th valve group is opened Only door adjusts quantity of steam of the door adjustment by it into low-pressure heater with it, thus controls low-pressure heater exit water temperature；
7) after the pressure before bypass valve is higher than the pressure of oxygen-eliminating device, the cut-off gate in the 12nd valve group is opened, Quantity of steam of the door adjustment by it into oxygen-eliminating device is adjusted with it, and reduces the evaporation capacity for engine of external vapour source, until external vapour source is complete Excision；
8) after the pressure before bypass valve is higher than high-pressure heater vapour lateral pressure, the cut-off in the 9th valve group is opened Door adjusts quantity of steam of the door adjustment by it into high-pressure heater with it, thus controls high-pressure heater exit water temperature；
9) after the steam parameter before high pressure cylinder meets steam turbine red switch requirement, steam turbine red switch is carried out, in red switch process In, quantity of steam required for steam turbine red switch and on-load is adjusted by bypass valve；
10) it after steam turbine on-load, after the extraction pressure of low pressure (LP) cylinder reaches the pressure that steam extraction can normally be put into, closes All valves in 14th valve group open the shut-off valve in the 13rd valve group, with the regulating valve in the 13rd valve group The quantity of steam being adjusted into low-pressure heater further controls the temperature that low-pressure heater goes out saliva；
11) after steam turbine on-load, after 1 section of extraction pressure of high pressure cylinder reaches the pressure that steam extraction can normally be put into, All valves in the 9th valve group are closed, the shut-off valve in the tenth valve group are opened, with the regulating valve tune in the tenth valve group The whole quantity of steam into high-pressure heater further controls the temperature that high-pressure heater goes out saliva；
12) after steam turbine on-load, after 2 sections of extraction pressures of high pressure cylinder reach the pressure that steam extraction can normally be put into, All valves in the 12nd valve group are closed, the shut-off valve in the 11st valve group are opened, with the tune in the 11st valve group Section valve is adjusted into the quantity of steam in auxiliary vapour header, further controls the pressure of auxiliary vapour header；
13) when all steam of evaporator outlet working medium, and the degree of superheat opens the second valve group higher than after setting value, closes Third valve group is closed, so far secondary circuit start completion；
14) it in secondary circuit stopped process, with the reduction of unit load, is set when evaporator outlet steam superheat is lower than After definite value, the cut-off gate in the 4th valve group is opened, the adjusting door in big 4th valve group is gradually opened, before and after the 4th valve group After pressure balance, third valve group is opened, with the pressure for adjusting door and adjusting steam-water separator in the 4th valve group, closes second Valve group adjusts the water level in steam-water separator with the regulating valve in the 5th valve group, and the water in steam-water separator passes through the 5th Valve group, the 8th valve group enter oxygen-eliminating device；
15) in secondary circuit stopped process, with the reduction of unit load, when the extraction pressure of low pressure (LP) cylinder adds less than low pressure After the rated pressure of hot device vapour side, all valves in the 13rd valve group are closed, open the shut-off valve in the 14th valve group, are used Regulating valve in 14th valve group is adjusted into the quantity of steam in low-pressure heater, further controls low-pressure heater and goes out saliva Temperature；
16) in secondary circuit stopped process, with the reduction of unit load, when 1 section of extraction pressure of high pressure cylinder is less than height After pressing heater vapour side rated pressure, all valves in the tenth valve group are closed, open the shut-off valve in the 9th valve group, are used Regulating valve in 9th valve group is adjusted into the quantity of steam in high-pressure heater, further controls high-pressure heater and goes out saliva Temperature；
17) in secondary circuit stopped process, with the reduction of unit load, when 2 sections of extraction pressures of high pressure cylinder are less than auxiliary After the rated pressure of vapour header, all valves in the 11st valve group are closed, open the shut-off valve in the 12nd valve group, are used Regulating valve in 12nd valve group is adjusted into the quantity of steam in auxiliary vapour header, further controls the pressure of auxiliary vapour header；
18) after the urgent chaser of steam turbine, the tenth valve group, the 11st valve group, the institute in the 13rd valve group are closed There is valve, with pressure before bypass valve control main inlet throttle-stop valve, meets system requirements；The shut-off valve in the 14th valve group is opened, It is adjusted into the quantity of steam in low-pressure heater with the regulating valve in the 14th valve group, further controls low-pressure heater outlet The temperature of water；The shut-off valve in the 9th valve group is opened, is adjusted into high-pressure heater with the regulating valve in the 9th valve group Quantity of steam, further control high-pressure heater and go out the temperature of saliva；The shut-off valve in the 12nd valve group is opened, with the 12nd Regulating valve in valve group is adjusted into the quantity of steam in auxiliary vapour header, further controls the pressure of auxiliary vapour header；
19) secondary circuit flow matches with reactor capability, is adjusted by feed pump and the 17th valve group；Oxygen-eliminating device Water level is controlled by condensate pump；The water level of condenser is controlled by solidifying water charging system；If the water quality of condenser is exceeded, close 16th valve group, water enter secondary coolant circuit system after handling qualification by precision processing system.
Compared with the existing technology, the present invention has the advantage that:
A kind of system and method for high temperature gas cooled reactor nuclear power unit secondary circuit start and stop of the present invention.The present invention and usually make at present System has compared following several respects clear advantage:
1) it is recycled the separator with heat is hydrophobic, there is energy-saving effect；
2) heat of partial bypass steam has directly been recycled, there is energy-saving effect；
3), to after auxiliary vapour header steam supply, electric boiler can be out of service using reject steam, there is energy-efficient effect；
4) in unit normal operation, electric boiler can switch to cold standby state from hot stand-by duty, have energy-efficient effect Fruit；
5) after steam turbine tripping, auxiliary vapour header can restore steam supply within a very short time, be conducive to the peace of nuclear power unit Entirely, stable operation；
6) a large amount of vapour sources of bypass are introduced, heat water supply by multiple links, feed temperature significantly improves, to evaporator Safe operation is advantageous；
7) after steam turbine tripping and single heap tripping, big ups and downs will not occur for evaporator inlet temperature, improve unit The safety of operation.
7) reduce unit using the dosage of external steam heating deaerator feedwater, there is energy-efficient effect；
8) reduce dependence of the unit to external steam, be conducive to the safe and stable operation of nuclear power unit；
9) temperature for reducing startup stage condensed water improves the efficiency of steam turbine；
10) temperature for reducing startup stage condensed water is advantageous to the safe operation of precision processing system；
11) power output for reducing solidifying pump, has energy-saving effect.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of the system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop.
In figure: 1- high pressure cylinder, 2- low pressure (LP) cylinder, the second valve group of 3-, 4- third valve group, the 11st valve group of 5-, 6- 12 valve groups, the 13rd valve group of 7-, the 4th valve group of 8-, the first valve group of 9-, the 9th valve group of 10-, the tenth valve of 11- Group, 12- steam-water separator, 13- evaporator, the outside 14- vapour source, 15- bypass valve, the 5th valve group of 16-, the auxiliary vapour connection of 17- Case, the 14th valve group of 18-, 19- high-pressure heater, 20- condenser, the 15th valve group of 21-, the auxiliary vapour user of 22-, 23- Six valve groups, the 7th valve group of 24-, 25- unit rhone, the 8th valve group of 26-, 27- feed pump,
28- oxygen-eliminating device, 29- low-pressure heater, 30- condensate pump, the 17th valve group of 31-, 32- coagulate water charging system, 33- 16th valve group, 34- precision processing system.
Specific embodiment
The present invention is further described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop provided by the invention, including evaporation Device 13, steam-water separator 12, unit rhone 25, oxygen-eliminating device 28, condenser 20, the first valve group 9, the second valve group 3, third Valve group 4, the 4th valve group 8, the 5th valve group 16, the 6th valve group 23, the 7th valve group 24 and the 8th valve group 26.
Wherein, the outlet of evaporator 13 connects the entrance in the first valve group 9, and the outlet of the first valve group 9 is divided into two strands, and One connects the entrance in the second valve group 3, and second strand of entrance connect in third valve group 4, the outlet of third valve group 4 connects in vapour The entrance of separator 12, the first outlet of steam-water separator 12 connect the entrance in the 4th valve group 8, and the of steam-water separator 12 Two outlets connect the entrance in the 5th valve group 16, and the outlet of the 5th valve group 16 is divided into three strands, and first strand connects in the 6th valve group 23 entrance, second strand of entrance connect in the 7th valve group 24, third stock connect the entrance in the 8th valve group 26, the 6th valve group 23 outlet connects the entrance in unit rhone 25, and the outlet of the 7th valve group 24 connects the first entrance in condenser 20, and the 8th The outlet of valve group 26 connects the first entrance in oxygen-eliminating device 28.
In addition, the invention also includes high pressure cylinder 1, low pressure (LP) cylinder 2, bypass valve 15, high-pressure heater 19, auxiliary vapour headers 17, low-pressure heater 29, the 9th valve group 10, the tenth valve group 11, the 11st valve group 5, the 12nd valve group the 6, the 13rd Valve group 7, the 14th valve group 18；Wherein, the outlet of the second valve group 3 and the 4th valve group 8 is divided into two strands after converging, and first Stock is connected to the entrance of high pressure cylinder 1, and second strand of entrance for being connected to bypass valve 15 is connected from the pipeline before bypass valve 15 Pipeline, is coupled with the entrance of the 9th valve group 10, the 12nd valve group 6, the 14th valve group 18, and the first of high pressure cylinder 1 goes out Mouth is connected to the entrance of the tenth valve group 11, and the second outlet of high pressure cylinder 1 is connected to the entrance of the 11st valve group 5, and the of high pressure cylinder 1 Three outlets are connected to the entrance of low pressure (LP) cylinder 2, and the first outlet of low pressure (LP) cylinder 2 is connected to the entrance of the 13rd valve group 7, the 9th valve group 10 Converge the first entrance for being followed by high-pressure heater 19, the 11st valve group 5 and the 12nd valve in outlet with the tenth valve group 11 Converge the first entrance for being followed by auxiliary vapour header 17, the outlet of the 14th valve group 18 and the 13rd valve group 7 in the outlet of door group 6 Converge the first entrance for being followed by low-pressure heater 29, the second outlet of low pressure (LP) cylinder 2 is connected to the second entrance of condenser 20, bypass The outlet of regulating valve 15 is connected to the third entrance of condenser 20, and the outlet of low-pressure heater 29 is connected to the second of oxygen-eliminating device 28 and enters Mouthful, the outlet of high-pressure heater 19 connects the entrance in evaporator 13.
Further, the invention also includes condensate pump 30, feed pump 27, auxiliary vapour user 22, external vapour sources 14, the 15th valve The 21, the 16th valve group 33 of door group, precision processing system 34, solidifying water charging system 32, the 17th valve group 31；Wherein, moisturizing system is coagulated System 32 is connected to the 4th entrance of condenser 20, and the outlet of condenser 20 is connected to the entrance of condensate pump 30, and condensate pump 30 goes out Mouth is divided into two strands, first strand of entrance for being connected to the 16th valve group 33, second strand of entrance for being connected to precision processing system 34, and the 16th The outlet of valve group 33 and the outlet of precision processing system 34 converge the second entrance for being followed by low-pressure heater 29, auxiliary vapour header 17 First outlet be connected to the entrance of the 15th valve group 21, the second outlet of auxiliary vapour header is connected to the entrance of auxiliary vapour user 22, outside The outlet of portion's vapour source 14 is connected to the second entrance of auxiliary vapour header, and the third that the outlet of the 15th valve group 21 is connected to oxygen-eliminating device 28 enters Mouthful, the outlet of oxygen-eliminating device 28 is connected to the entrance of feed pump 27, and the outlet of feed pump 27 is connected to the entrance of the 17th valve group 31, the The outlet of 17 valve groups 31 is connected to the second entrance of high-pressure heater 19.
Wherein, the first valve group 9, the 4th valve group 8, the 5th valve group 16 are made of shut-off valve and regulating valve, the second valve Door group 3, third valve group 4, the 6th valve group 23, the 7th valve group 24, the 8th valve group 26 are made of shut-off valve.
9th valve group 10, the tenth valve group 11, the 11st valve group 5, the 12nd valve group 6, the 13rd valve group 7, 14th valve group 18 is made of shut-off valve, regulating valve, non-return valve.
Auxiliary vapour user 22 needs the user of auxiliary vapour including axle envelope etc., and external vapour source 14 includes that can provide the electricity of vapour source to unit Boiler, adjacent unit etc., the 15th valve group 21, the 17th valve group 31 are made of shut-off valve and regulating valve, the 16th valve Group 33 is made of shut-off valve.
A kind of method of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop provided by the invention, comprising the following steps:
1) in secondary circuit start-up course, from external vapour source 14 to auxiliary 17 steam supply of vapour header, steam passes through the 15th valve Group 21 enters oxygen-eliminating device 28 and heats water supply, and the water in oxygen-eliminating device passes through feed pump 27, the 17th valve group 31, high-pressure heater 19 enter evaporator 13, and the second valve group 3 is in close state, and the outlet working medium of evaporator 13 passes through the first valve group 9, the Three valve groups 4 enter steam-water separator 12, maintain pressure required for evaporator 13 as the regulating valve in the first valve group 9, The water level that steam-water separator 12 is maintained by the regulating valve in the 5th valve group 16 adjusts vapour by the regulating valve in the 4th valve group 8 The pressure of separator 12, auxiliary vapour user 22 use the steam of auxiliary vapour header 17；
2) before the drain water quality in steam-water separator 12 is not up to recycling standard, water in steam-water separator 12 passes through the Five valve groups 16, the 6th valve group 23 drain into unit rhone 25；
3) pressure after the water quality in steam-water separator 12 reaches recycling standard and in steam-water separator 12 is not higher than and removes Before the pressure of oxygen device 28, the water in steam-water separator 12 drains into condenser 20 by the 5th valve group 16, the 7th valve group 24；
4) pressure after the drain water quality in steam-water separator 12 reaches recycling standard and in steam-water separator 12 is higher than The pressure of oxygen-eliminating device 28, hydrophobic in steam-water separator 2 drain into oxygen-eliminating device 28 by the 5th valve group 16, the 8th valve group 26；
5) steam in steam-water separator 12 enters condenser 20 by the 4th valve group 8, bypass valve 15, by bypassing Regulating valve 15 controls the pressure before bypass valve 15；
6) after the pressure before bypass valve 15 is higher than 29 vapour lateral pressure of low-pressure heater, the 14th valve group 18 is opened In cut-off gate, with its adjust door adjustment by its enter low-pressure heater 29 quantity of steam, thus control low-pressure heater 29 go out Saliva temperature；
7) after the pressure before bypass valve 15 is higher than the pressure of oxygen-eliminating device 17, cutting in the 12nd valve group 6 is opened Only door adjusts quantity of steam of the door adjustment by it into oxygen-eliminating device with it, and gradually reduces the evaporation capacity for engine of external vapour source 14, until outer Portion's vapour source is cut off completely；
8) it after the pressure before bypass valve 15 is higher than 19 vapour lateral pressure of high-pressure heater, opens in the 9th valve group 10 Cut-off gate, with its adjust door adjustment by its enter high-pressure heater 19 quantity of steam, thus control high-pressure heater 19 export Water temperature；
9) after the steam parameter before high pressure cylinder 1 meets steam turbine red switch requirement, steam turbine red switch is carried out, in red switch process In, quantity of steam required for steam turbine red switch and on-load is adjusted by bypass valve 15；
10) after steam turbine on-load, when the extraction pressure of low pressure (LP) cylinder 2 is close to 29 vapour side rated pressure of low-pressure heater Afterwards, all valves in the 14th valve group 18 are closed, the shut-off valve in the 13rd valve group 7 are opened, with the 13rd valve group 7 In regulating valve be adjusted into the quantity of steam in low-pressure heater 29, further control low-pressure heater 29 go out saliva temperature；
11) after steam turbine on-load, when 1 section of extraction pressure of high pressure cylinder 1 is close to the 19 specified pressure in vapour side of high-pressure heater After power, all valves in the 9th valve group 10 are closed, the shut-off valve in the tenth valve group 11 are opened, in the tenth valve group 11 Regulating valve be adjusted into the quantity of steam in high-pressure heater 19, further control high-pressure heater 19 go out saliva temperature；
12) after steam turbine on-load, when high pressure cylinder 12 sections of extraction pressures close to auxiliary vapour header 17 rated pressure after, All valves in the 12nd valve group 6 are closed, the shut-off valve in the 11st valve group 5 are opened, in the 11st valve group 5 Regulating valve is adjusted into the quantity of steam in auxiliary vapour header 17, further controls the pressure of auxiliary vapour header 17；
13) after evaporator 13 exports all steam of working medium, and the degree of superheat is higher than setting value, the second valve group 3 is opened, Third valve group 4 is closed, so far secondary circuit start completion；
14) in secondary circuit stopped process, with the reduction of unit load, when the 13 outlet vapor degree of superheat of evaporator is lower than After setting value, the cut-off gate in the 4th valve group 8 is opened, the adjusting door in big 4th valve group 8 is gradually opened, when the 4th valve group After 8 front and back pressure balances, third valve group 4 is opened, with the pressure for adjusting door and adjusting steam-water separator 12 in the 4th valve group 8 Power closes the second valve group 3, with the water level in the regulating valve adjustment steam-water separator 12 in the 5th valve group 16, steam-water separation Water in device 12 enters oxygen-eliminating device 28 by the 5th valve group 16, the 8th valve group 26；
15) in secondary circuit stopped process, with the reduction of unit load, when the extraction pressure of low pressure (LP) cylinder 2 is less than low pressure After 29 vapour side rated pressure of heater, all valves in the 13rd valve group 7 are closed, open cutting in the 14th valve group 18 Only valve is adjusted into the quantity of steam in low-pressure heater 29 with the regulating valve in the 14th valve group 18, further controls low pressure Heater 29 goes out the temperature of saliva；
16) in secondary circuit stopped process, with the reduction of unit load, when 1 section of extraction pressure of high pressure cylinder 1 is less than height After pressing 19 vapour side rated pressure of heater, all valves in the tenth valve group 11 are closed, open cutting in the 9th valve group 10 Only valve is adjusted into the quantity of steam in high-pressure heater 19 with the regulating valve in the 9th valve group 10, further controls high pressure and adds Hot device 19 goes out the temperature of saliva；
17) in secondary circuit stopped process, with the reduction of unit load, when 2 sections of extraction pressures of high pressure cylinder 1 are less than auxiliary After the rated pressure of vapour header 17, all valves in the 11st valve group 5 are closed, open the cut-off in the 12nd valve group 6 Valve is adjusted into the quantity of steam in auxiliary vapour header 17 with the regulating valve in the 12nd valve group 6, further controls auxiliary vapour header 17 Pressure；
18) after the urgent chaser of steam turbine, the tenth valve group 11, the 11st valve group 5, the 13rd valve group are closed rapidly All valves in 7 meet system requirements with pressure before the control main inlet throttle-stop valve of bypass valve 15；Open the 14th valve group 18 In shut-off valve, be adjusted into the quantity of steam in low-pressure heater 29 with the regulating valve in the 14th valve group 18, further control Low-pressure heater 29 processed goes out the temperature of saliva；The shut-off valve in the 9th valve group 10 is opened, with the adjusting in the 9th valve group 10 Valve is adjusted into the quantity of steam in high-pressure heater 19, further controls the temperature that high-pressure heater 19 goes out saliva；Open the tenth Shut-off valve in two valve groups 6 is adjusted into the quantity of steam in auxiliary vapour header 17 with the regulating valve in the 12nd valve group 6, into One step controls the pressure of auxiliary vapour header 17；
19) secondary circuit flow matches with reactor capability, is adjusted by feed pump 27 and the 17th valve group 31；Deoxygenation The water level of device 29 is controlled by condensate pump 30；The water level of condenser 20 is controlled by solidifying water charging system 32；The water of condenser 20 If matter is exceeded, the 16th valve group 33 is closed, water enters secondary coolant circuit system after handling qualification by precision processing system 34.

Claims (8)

1. a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop, which is characterized in that including evaporator (13), carbonated drink point From device (12), unit rhone (25), oxygen-eliminating device (28), condenser (20), the first valve group (9), the second valve group (3), Three valve groups (4), the 4th valve group (8), the 5th valve group (16), the 6th valve group (23), the 7th valve group (24) and the 8th Valve group (26)；Wherein,
The outlet of evaporator (13) connects the entrance in the first valve group (9), and the outlet of the first valve group (9) is divided into two strands, and first Stock connects the entrance in the second valve group (3), and second strand of entrance connect in third valve group (4), the outlet of third valve group (4) connects Entrance in steam-water separator (12), the first outlet of steam-water separator (12) connect the entrance in the 4th valve group (8), carbonated drink point Second outlet from device (12) connects the entrance in the 5th valve group (16), and the outlet of the 5th valve group (16) is divided into three strands, and first Stock connects the entrance in the 6th valve group (23), second strand of entrance connect in the 7th valve group (24), and third stock connects in the 8th valve The entrance of group (26), the outlet of the 6th valve group (23) connect the entrance in unit rhone (25), and the 7th valve group (24) goes out Mouth connects the first entrance in condenser (20), and the outlet of the 8th valve group (26) connects the first entrance in oxygen-eliminating device (28).
2. a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop according to claim 1, which is characterized in that the One valve group (9), the 4th valve group (8) and the 5th valve group (16) are made of shut-off valve and regulating valve, the second valve group (3), third valve group (4), the 6th valve group (23), the 7th valve group (24) and the 8th valve group (26) are by cut-off valve group At.
3. a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop according to claim 1, which is characterized in that also Including high pressure cylinder (1), low pressure (LP) cylinder (2), bypass valve (15), high-pressure heater (19), auxiliary vapour header (17), low-pressure heater (29), the 9th valve group (10), the tenth valve group (11), the 11st valve group (5), the 12nd valve group (6), the 13rd valve Group (7) and the 14th valve group (18)；Wherein,
The outlet of second valve group (3) and the 4th valve group (8) is divided into two strands after converging, first strand is connected to entering for high pressure cylinder (1) Mouthful, second strand of entrance for being connected to bypass valve (15) is coupled with from the pipeline upper connector road before bypass valve (15) The first outlet of the entrance of 9th valve group (10), the 12nd valve group (6), the 14th valve group (18), high pressure cylinder (1) is connected to The entrance of tenth valve group (11), the second outlet of high pressure cylinder (1) are connected to the entrance of the 11st valve group (5), high pressure cylinder (1) Third, which exports, is connected to the entrances of low pressure (LP) cylinder (2), and the first outlet of low pressure (LP) cylinder (2) is connected to the entrance of the 13rd valve group (7), and the 9th Converge the first entrance for being followed by high-pressure heater (19), the 11st valve in the outlet of valve group (10) and the tenth valve group (11) Converge the first entrance for being followed by auxiliary vapour header (17), the 14th valve group (18) in the outlet of group (5) and the 12nd valve group (6) Converge the first entrance for being followed by low-pressure heater (29), the second outlet of low pressure (LP) cylinder (2) in outlet with the 13rd valve group (7) It is connected to the second entrance of condenser (20), the outlet of bypass valve (15) is connected to the third entrance of condenser (20), and low pressure adds The outlet of hot device (29) is connected to the second entrance of oxygen-eliminating device (28), and the outlet of high-pressure heater (19) meets entering in evaporator (13) Mouthful.
4. a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop according to claim 3, which is characterized in that the Nine valve groups (10), the tenth valve group (11), the 11st valve group (5), the 12nd valve group (6), the 13rd valve group (7) and 14th valve group (18) is made of shut-off valve, regulating valve and non-return valve.
5. a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop according to claim 3, which is characterized in that also Including condensate pump (30), feed pump (27), auxiliary vapour user (22), external vapour source (14), the 15th valve group (21), the 16th Valve group (33), precision processing system (34), solidifying water charging system (32) and the 17th valve group (31)；Wherein,
Solidifying water charging system (32) are connected to the 4th entrance of condenser (20), and the outlet of condenser (20) is connected to condensate pump (30) Entrance, the outlet of condensate pump (30) are divided into two strands, and first strand of entrance for being connected to the 16th valve group (33), second strand is connected to essence The entrance of processing system (34), the outlet of the 16th valve group (33) and the outlet of precision processing system (34), which converge, is followed by low pressure The second entrance of heater (29), the first outlet of auxiliary vapour header (17) are connected to the entrance of the 15th valve group (21), auxiliary vapour connection The second outlet of case is connected to the entrance of auxiliary vapour user (22), and the outlet of external vapour source (14) is connected to the second entrance of auxiliary vapour header, The outlet of 15th valve group (21) is connected to the third entrance of oxygen-eliminating device (28), and the outlet of oxygen-eliminating device (28) is connected to feed pump (27) Entrance, the outlet of feed pump (27) is connected to the entrance of the 17th valve group (31), and the outlet of the 17th valve group (31) is connected to The second entrance of high-pressure heater (19).
6. a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop according to claim 5, which is characterized in that auxiliary Vapour user (22) includes the user that axle envelope needs auxiliary vapour, and external vapour source (14) includes that can provide the electric boiler and phase of vapour source to unit Adjacent unit.
7. a kind of system of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop according to claim 5, which is characterized in that the 15 valve groups (21), the 17th valve group (31) are made of shut-off valve and regulating valve, and the 16th valve group (33) is by ending Valve group at.
8. a kind of method of high temperature gas cooled reactor nuclear power unit secondary circuit start and stop, which is characterized in that this method is based in claim 5 A kind of system of the high temperature gas cooled reactor nuclear power unit secondary circuit start and stop, comprising the following steps:
1) in secondary circuit start-up course, from external vapour source (14) to auxiliary vapour header (17) steam supply, steam passes through the 15th valve Group (21) enters oxygen-eliminating device (28) heating water supply, the water in oxygen-eliminating device by feed pump (27), the 17th valve group (31) and High-pressure heater (19) enters evaporator (13), and the second valve group (3) is in close state, the outlet working medium of evaporator (13) Steam-water separator (12) are entered by the first valve group (9), third valve group (4), by the regulating valve in the first valve group (9) Pressure required for evaporator (13) is maintained, the water of steam-water separator (12) is maintained by the regulating valve in the 5th valve group (16) Position, by the pressure of regulating valve adjustment steam-water separator (12) in the 4th valve group (8), auxiliary vapour user (22) uses auxiliary vapour header (17) steam；
2) before the drain water quality in steam-water separator (12) is not up to recycling standard, water in steam-water separator (12) passes through the Five valve groups (16) and the 6th valve group (23) drain into unit rhone (25)；
3) pressure after the water quality in steam-water separator (12) reaches recycling standard and in steam-water separator (12) is not higher than and removes Before the pressure of oxygen device (28), the water in steam-water separator (12) is drained into solidifying by the 5th valve group (16) and the 7th valve group (24) Vapour device (20)；
4) pressure after the drain water quality in steam-water separator (12) reaches recycling standard and in steam-water separator (12) is higher than The pressure of oxygen-eliminating device (28), hydrophobic in steam-water separator (2) are drained by the 5th valve group (16) and the 8th valve group (26) Oxygen-eliminating device (28)；
5) steam in steam-water separator (12) enters condenser (20) by the 4th valve group (8) and bypass valve (15), Pressure before controlling bypass valve (15) by bypass valve (15)；
6) after the pressure before bypass valve (15) is higher than low-pressure heater (29) vapour lateral pressure, the 14th valve group is opened (18) cut-off gate in adjusts quantity of steam of the door adjustment by it into low-pressure heater (29) with it, thus controls low-pressure heating Device (29) exit water temperature；
7) it after the pressure before bypass valve (15) is higher than the pressure of oxygen-eliminating device (17), opens in the 12nd valve group (6) Cut-off gate adjusts quantity of steam of the door adjustment by it into oxygen-eliminating device with it, and reduces the evaporation capacity for engine of external vapour source (14), until outer Portion's vapour source is cut off completely；
8) after the pressure before bypass valve (15) is higher than high-pressure heater (19) vapour lateral pressure, the 9th valve group (10) is opened In cut-off gate, with its adjust door adjustment by its enter high-pressure heater (19) quantity of steam, thus control high-pressure heater (19) exit water temperature；
9) after the steam parameter before high pressure cylinder (1) meets steam turbine red switch requirement, steam turbine red switch is carried out, in red switch process In, quantity of steam required for steam turbine red switch and on-load is adjusted by bypass valve (15)；
10) it after steam turbine on-load, after the extraction pressure of low pressure (LP) cylinder (2) reaches the pressure that steam extraction can normally be put into, closes All valves in 14th valve group (18) open the shut-off valve in the 13rd valve group (7), with the 13rd valve group (7) In regulating valve be adjusted into the quantity of steam in low-pressure heater (29), further control low-pressure heater (29) and go out the temperature of saliva Degree；
11) it after steam turbine on-load, after 1 section of extraction pressure of high pressure cylinder (1) reaches the pressure that steam extraction can normally be put into, closes All valves in the 9th valve group (10) are closed, the shut-off valve in the tenth valve group (11) are opened, in the tenth valve group (11) Regulating valve be adjusted into the quantity of steam in high-pressure heater (19), further control high-pressure heater (19) and go out the temperature of saliva Degree；
12) it after steam turbine on-load, after 2 sections of extraction pressures of high pressure cylinder (1) reach the pressure that steam extraction can normally be put into, closes All valves in the 12nd valve group (6) are closed, the shut-off valve in the 11st valve group (5) are opened, with the 11st valve group (5) In regulating valve be adjusted into the quantity of steam in auxiliary vapour header (17), further control the pressure of auxiliary vapour header (17)；
13) it after evaporator (13) export all steam of working medium, and the degree of superheat is higher than setting value, opens the second valve group (3), It closes third valve group (4), so far secondary circuit start completion；
14) it in secondary circuit stopped process, with the reduction of unit load, is set when evaporator (13) the outlet vapor degree of superheat is lower than After definite value, the cut-off gate in the 4th valve group (8) is opened, the adjusting door in big 4th valve group (8) is gradually opened, when the 4th valve It before and after group (8) after pressure balance, opens third valve group (4), adjusts steam-water separator with the adjusting door in the 4th valve group (8) (12) pressure is closed the second valve group (3), in regulating valve adjustment steam-water separator (12) in the 5th valve group (16) Water level, the water in steam-water separator (12) enter oxygen-eliminating device (28) by the 5th valve group (16), the 8th valve group (26)；
15) in secondary circuit stopped process, with the reduction of unit load, when the extraction pressure of low pressure (LP) cylinder (2) adds less than low pressure After the rated pressure of hot device (29) vapour side, all valves in the 13rd valve group (7) are closed, are opened in the 14th valve group (18) Shut-off valve, be adjusted into the quantity of steam in low-pressure heater (29) with the regulating valve in the 14th valve group (18), further Control low-pressure heater (29) goes out the temperature of saliva；
16) in secondary circuit stopped process, with the reduction of unit load, when 1 section of extraction pressure of high pressure cylinder (1) is less than high pressure After the rated pressure of heater (19) vapour side, all valves in the tenth valve group (11) are closed, are opened in the 9th valve group (10) Shut-off valve, be adjusted into the quantity of steam in high-pressure heater (19) with the regulating valve in the 9th valve group (10), further control High-pressure heater (19) processed goes out the temperature of saliva；
17) in secondary circuit stopped process, with the reduction of unit load, when 2 sections of extraction pressures of high pressure cylinder (1) are less than auxiliary vapour After the rated pressure of header (17), all valves in the 11st valve group (5) are closed, are opened in the 12nd valve group (6) Shut-off valve is adjusted into the quantity of steam in auxiliary vapour header (17) with the regulating valve in the 12nd valve group (6), further controls auxiliary The pressure of vapour header (17)；
18) after the urgent chaser of steam turbine, the tenth valve group (11), the 11st valve group (5), the 13rd valve group (7) are closed In all valves, with bypass valve (15) control main inlet throttle-stop valve before pressure, meet system requirements；Open the 14th valve group (18) shut-off valve in is adjusted into the quantity of steam in low-pressure heater (29) with the regulating valve in the 14th valve group (18), Further control low-pressure heater (29) goes out the temperature of saliva；The shut-off valve in the 9th valve group (10) is opened, with the 9th valve Regulating valve in group (10) is adjusted into the quantity of steam in high-pressure heater (19), further controls high-pressure heater (19) outlet The temperature of water；The shut-off valve in the 12nd valve group (6) is opened, is adjusted into the regulating valve in the 12nd valve group (6) auxiliary Quantity of steam in vapour header (17) further controls the pressure of auxiliary vapour header (17)；
19) secondary circuit flow matches with reactor capability, is adjusted by feed pump (27) and the 17th valve group (31)；Deoxygenation The water level of device (29) is controlled by condensate pump (30)；The water level of condenser (20) is controlled by solidifying water charging system (32)；Condensing Device (20) if water quality it is exceeded, close the 16th valve group (33), water by precision processing system (34) processing it is qualified after enters Secondary coolant circuit system.
CN201910498205.XA 2019-06-10 2019-06-10 System and method for starting and stopping two loops of high-temperature gas cooled reactor nuclear power unit Active CN110131003B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910498205.XA CN110131003B (en) 2019-06-10 2019-06-10 System and method for starting and stopping two loops of high-temperature gas cooled reactor nuclear power unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910498205.XA CN110131003B (en) 2019-06-10 2019-06-10 System and method for starting and stopping two loops of high-temperature gas cooled reactor nuclear power unit

Publications (2)

Publication Number Publication Date
CN110131003A true CN110131003A (en) 2019-08-16
CN110131003B CN110131003B (en) 2023-06-27

Family

ID=67580898

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910498205.XA Active CN110131003B (en) 2019-06-10 2019-06-10 System and method for starting and stopping two loops of high-temperature gas cooled reactor nuclear power unit

Country Status (1)

Country Link
CN (1) CN110131003B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110713220A (en) * 2019-11-06 2020-01-21 西安热工研究院有限公司 Dosing system and method for oxygen scavenger hydrazine in secondary loop system of high-temperature gas cooled reactor nuclear power plant
CN111457354A (en) * 2020-04-08 2020-07-28 华北电力科学研究院有限责任公司 Input control method and device for feed water heating system of thermal power plant
CN113944924A (en) * 2021-10-18 2022-01-18 西安热工研究院有限公司 Automatic control system and method for steam temperature at outlet of evaporator of high-temperature gas cooled reactor unit
CN114484413A (en) * 2022-01-14 2022-05-13 西安热工研究院有限公司 System and method for heating water
CN114738732A (en) * 2022-03-24 2022-07-12 青岛畅隆重型装备有限公司 One-key start-stop system of high-pressure heater and control method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1513078A (en) * 1975-09-30 1978-06-07 Westinghouse Electric Corp Electric power plant with system for accelerating a cross compound turbine
CN106246245A (en) * 2016-08-29 2016-12-21 华能国际电力开发公司铜川照金电厂 A kind of method shortening unit starting time and energy conservation starting
CN106678770A (en) * 2017-02-27 2017-05-17 西安热工研究院有限公司 System and method for heating feed water of evaporator of nuclear power unit
CN106761980A (en) * 2016-12-06 2017-05-31 北京国电龙源环保工程有限公司 Organic amine desulfurizer steam-supplying system and method in fired power generating unit
CN108167036A (en) * 2018-01-26 2018-06-15 西安热工研究院有限公司 A kind of system and method for nuclear power generating sets vapor self
CN108665991A (en) * 2018-05-29 2018-10-16 西安热工研究院有限公司 A kind of system and method for high temperature gas cooled reactor nuclear power generating sets very hot startup
CN108843414A (en) * 2018-05-16 2018-11-20 山东电力工程咨询院有限公司 Nuclear energy couples and decouples band heat generating system and method again with conventional energy resource
US20190170020A1 (en) * 2016-06-23 2019-06-06 Lidao ZHANG Gas turbine and pressurized water reactor steam turbine combined circulation system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1513078A (en) * 1975-09-30 1978-06-07 Westinghouse Electric Corp Electric power plant with system for accelerating a cross compound turbine
US20190170020A1 (en) * 2016-06-23 2019-06-06 Lidao ZHANG Gas turbine and pressurized water reactor steam turbine combined circulation system
CN106246245A (en) * 2016-08-29 2016-12-21 华能国际电力开发公司铜川照金电厂 A kind of method shortening unit starting time and energy conservation starting
CN106761980A (en) * 2016-12-06 2017-05-31 北京国电龙源环保工程有限公司 Organic amine desulfurizer steam-supplying system and method in fired power generating unit
CN106678770A (en) * 2017-02-27 2017-05-17 西安热工研究院有限公司 System and method for heating feed water of evaporator of nuclear power unit
CN108167036A (en) * 2018-01-26 2018-06-15 西安热工研究院有限公司 A kind of system and method for nuclear power generating sets vapor self
CN108843414A (en) * 2018-05-16 2018-11-20 山东电力工程咨询院有限公司 Nuclear energy couples and decouples band heat generating system and method again with conventional energy resource
CN108665991A (en) * 2018-05-29 2018-10-16 西安热工研究院有限公司 A kind of system and method for high temperature gas cooled reactor nuclear power generating sets very hot startup

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110713220A (en) * 2019-11-06 2020-01-21 西安热工研究院有限公司 Dosing system and method for oxygen scavenger hydrazine in secondary loop system of high-temperature gas cooled reactor nuclear power plant
CN110713220B (en) * 2019-11-06 2024-02-20 西安热工研究院有限公司 Dosing system and method for deoxidizer hydrazine in high-temperature gas cooled reactor nuclear power plant secondary loop system
CN111457354A (en) * 2020-04-08 2020-07-28 华北电力科学研究院有限责任公司 Input control method and device for feed water heating system of thermal power plant
CN111457354B (en) * 2020-04-08 2022-02-08 华北电力科学研究院有限责任公司 Input control method and device for feed water heating system of thermal power plant
CN113944924A (en) * 2021-10-18 2022-01-18 西安热工研究院有限公司 Automatic control system and method for steam temperature at outlet of evaporator of high-temperature gas cooled reactor unit
CN113944924B (en) * 2021-10-18 2023-08-22 西安热工研究院有限公司 Automatic control system and method for outlet steam temperature of evaporator of high-temperature gas cooled reactor unit
CN114484413A (en) * 2022-01-14 2022-05-13 西安热工研究院有限公司 System and method for heating water
CN114738732A (en) * 2022-03-24 2022-07-12 青岛畅隆重型装备有限公司 One-key start-stop system of high-pressure heater and control method thereof
CN114738732B (en) * 2022-03-24 2024-04-05 青岛畅隆重型装备有限公司 One-key start-stop system of high-voltage heater and control method thereof

Also Published As

Publication number Publication date
CN110131003B (en) 2023-06-27

Similar Documents

Publication Publication Date Title
CN110131003A (en) System and method for starting and stopping secondary loop of high-temperature gas cooled reactor nuclear power unit
CN110259532A (en) The adaptive steam-supplying system of secondary circuit of PWR nuclear power plant therrmodynamic system and method
CN112361324B (en) Energy-saving and consumption-reducing method for condensate pump of double reheating unit
CN106678770A (en) System and method for heating feed water of evaporator of nuclear power unit
CN210118175U (en) Pressurized water reactor nuclear power unit two-loop thermodynamic system self-adaptation steam supply system
CN108665991B (en) System and method for starting nuclear power unit of high-temperature gas cooled reactor in polar hot state
CN108167036A (en) A kind of system and method for nuclear power generating sets vapor self
CN106887265B (en) The start and stop shut-down system of one bulb bed modular high temperature gas cooled reactor
CN113389606B (en) Direct heat supply system and method for exhaust steam and extraction steam of medium-pressure cylinder of steam turbine of nuclear power unit
CN209591545U (en) A kind of secondary circuit security system for reactor emergency shut-down
WO2023071254A1 (en) Reactor shutdown transient non-shutdown operation system and method
CN110397479A (en) A kind of multivariable collaboration frequency modulation peak regulation system and method
CN207776920U (en) A kind of system of nuclear power generating sets vapor self
CN109767852A (en) A kind of secondary circuit security system and its working method for reactor emergency shut-down
CN111964028A (en) Thermal power generating unit high-quality working medium recycling system and working method
CN206711612U (en) A kind of system for verifying HTGR start and stop heaping equipment function
CN106246251B (en) Combined cycle thermoelectric co-feeding system and its height arrange control method of drawing gas
CN208189227U (en) A kind of system of high temperature gas cooled reactor nuclear power unit very hot startup
CN110010254B (en) System and method for three-loop steam-water separation of sodium-cooled fast reactor
CN108036301A (en) A kind of system and method for high temperature gas cooled reactor nuclear power generating sets steam-water separator drain recovery
CN207750972U (en) A kind of system of high temperature gas cooled reactor nuclear power generating sets steam-water separator drain recovery
CN110056854A (en) The steam-supplying system and operation method of No. zero high-pressure heater in a kind of coal unit
CN206572497U (en) A kind of system for heating nuclear power generating sets evaporator feedwater
CN114034032A (en) Heat recovery system and method for high-temperature gas cooled reactor in low-load operation stage
CN113374539B (en) Steam inlet control system of double-cylinder double-pressure waste heat generating set and steam supplementing control method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant