CN106352313B - The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle uses - Google Patents
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle uses Download PDFInfo
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- CN106352313B CN106352313B CN201610662243.0A CN201610662243A CN106352313B CN 106352313 B CN106352313 B CN 106352313B CN 201610662243 A CN201610662243 A CN 201610662243A CN 106352313 B CN106352313 B CN 106352313B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
- F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/005—Steam superheating characterised by heating method the heat being supplied by steam
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Abstract
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses is related to the waste heat boiler that a kind of heating surface of large size only has superheater, high-pressure economizer, low-pressure coal saver, echelon by the saturated vapor of heavy duty gas turbine waste heat from tail gas heating PWR steam generator outlet, the condensed water that heats in the way of shunting the high-pressure feed water of secondary circuit main feed pump outlet and heat the outlet of secondary circuit condensate pump in the way of shunting；The waste heat boiler of the latent heat of vaporization of recyclable part heavy duty gas turbine tail gas institute moisture vapor.Secondary circuit main steam temperature is lifted up by 272.8 DEG C using the heat of gas turbine exhaust gas, with number of units, the difference of load of difference and the heavy duty gas turbine input of presurized water reactor steam production, secondary circuit main steam temperature sliding temperature operation, superheater outlet flue-gas temperature between 272.8 DEG C to 630 DEG C are about reduced to 300 DEG C；In high and low pressure economizer, flue-gas temperature is further decreased to 40 DEG C by 300 DEG C.
Description
(1) technical field：
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses is related to a kind of being heated for large size
Only have the waste heat boiler of superheater, high-pressure economizer, low-pressure coal saver, echelon to be heated using heavy duty gas turbine waste heat from tail gas in face
The saturated vapor of PWR steam generator outlet, the high-pressure feed water for heating in a manner of shunting the outlet of secondary circuit main feed pump and
The condensed water of secondary circuit condensate pump outlet is heated in a manner of shunting；The aqueous steaming of recyclable part heavy duty gas turbine tail gas institute
The waste heat boiler of the latent heat of vaporization of vapour.
(2) background technology：
Presurized water reactor (Pressurized Water Reactor) makees coolant and moderator using pressurization light-water, and water exists
The nuclear reactor not boiled in heap.Nuclear fuel is slightly enriched uranium.It is universally acknowledged enlarged technology maturation, operational safety, economy
Practical nuclear reaction heap-type.AP1000 can be as the mainstream product of third generation pressurized-water reactor nuclear power plant.
The major parameter of AP1000 generation Ⅲ nuclear powers station steam generator (Steam Generator)：
The major parameter of AP1000 generation Ⅲ nuclear powers station steam turbine generator：
The saturated vapor that two steam generators generate is sent into steam turbine high-pressure cylinder by secondary circuit main steam system, in steamer
Steam discharge enters 2 external separators after the acting of machine high pressure cylinder expansion；Under the conditions of rated load, external carbonated drink
The humidity of 10%-13% contained in steam turbine high-pressure cylinder steam discharge is reduced to about 0.17% or smaller by separator/heater；Outside
It sets formula separator and is equipped with 2 grades of reheaters, the 1st grade uses high pressure cylinder steam extraction for heat source, and the 2nd grade uses main steam for heat
The steam for entering reheater is heated to superheat state by source；Steam heated after by 6 pipelines enter 3 double-current steamers
Machine low pressure (LP) cylinder；Some vapor is from high pressure cylinder and low pressure (LP) cylinder extraction for carrying out backheat to water supply and condensed water.Main condenser is to solidifying
It bears water and carries out deoxygenation and waste heat is passed into circulation；Water supply injects steam generator by secondary circuit main feed pump；Steam turbine
Steam extraction is provided for 6 grades of water supply backheats；The exhaust point of high pressure cylinder provides steam extraction for No. 1 high-pressure heater, and high pressure cylinder steam discharge is to deoxygenation
Device provides steam extraction, and the 3rd, 4,5,6 grade of exhaust point of low pressure (LP) cylinder provides steam extraction to the 3rd, 4,5, No. 6 low-pressure heater respectively, and No. 5 low
Pressure heater and No. 6 low-pressure heaters are usually placed in the throat of condenser.
China (including Taiwan) has put into all presurized water reactors of nuclear power generating sets of commercial operation；From technology, safety, warp
Ji, environmental protection and industrial character see that compacted clay liners should not participate in peak load regulation network, especially continually carry out significantly load
Adjustment.
According to the height of ignition temperature when work and power of the assembling unit size, power station A-B-C- is divided into heavy duty gas turbine
Eight ranks of D-E-F-G-H.The intake air temperature of gas turbine is higher, and the power of the assembling unit is bigger, and rank is higher, and the thermal efficiency is higher, leads to
Normal gas turbine exhaust gas temperature is also higher, and usual gas turbine exhaust gas Temperature Distribution is in 630 DEG C to 710 DEG C sections, same combustion
When gas-turbine band part load, exhaust temperature when exhaust temperature is generally greater than at full capacity.
Prior art gas turbine is usually followed with the waste heat boiler of the prior art, steam turbine composition gas-steam combined
Loop system；The steam turbine reheating or non-reheating, without regenerative steam mouth, in having, low pressure filling import；The steam turbine is furnished with
Necessary subsidiary engine, such as condensate pump, water circulating pump, condenser, vacuum pump, cooling tower, lubricating oil system, Control ＆ Protective, side
Road system etc.；The waste heat boiler is commonly designed pressure in pairs or three pressures, provides the superheated steam of different pressures, each pressure respectively
There are oneself economizer, evaporator, drum, superheater；Usual gas turbine powered generator institute generated energy accounts for about combustion gas-
The last 2/3 of Steam Combined Cycle unit；The generator institute generated energy of steam turbine driving accounts for about gas-steam combined cycle set
It is 1/3 weak.
(3) invention content：
Technical problem to be solved：
The steam generator of presurized water reactor can only produce the saturated vapor that secondary circuit uses, and not have steam superheating ability；It is external
The major function of formula separator is that the humidity of 10%-13% contained in high-pressure turbine steam discharge is reduced to about
0.17% or smaller, in order to obtain the degree of superheat of the low pressure (LP) cylinder entrance less than 90K, or even secondary circuit main steam has been employed as external
The heat source of formula separator；The high pressure cylinder of presurized water reactor steam turbine is substantially a wet steam turbine, each turbine
The movable vane piece of grade works under the conditions of moist steam, and the thermal efficiency is low, and is unfavorable for movable vane piece long period safe operation；Low pressure (LP) cylinder is arranged
Vapour humidity is also quite higher than coal-fired extra-supercritical unit；High pressure cylinder, low pressure (LP) cylinder internal efficiency only 80% or so, heat consumption is up to
10405.7kJ/kWh (deducts electronic pump power), and the thermal efficiency only 34.6% (deducts electronic pump power).
Solve the technical solution of its technical problem use：
Heavy duty gas turbine forms combined cycle system with presurized water reactor steam turbine, will using the heat of gas turbine exhaust gas
Secondary circuit main steam temperature is lifted up by 272.8 DEG C, with the platform of difference and the heavy duty gas turbine input of presurized water reactor steam production
The difference of number, load, secondary circuit main steam temperature sliding temperature operation, waste-heat boiler superheater outlet between 272.8 DEG C to 630 DEG C
Flue-gas temperature is about reduced to 300 DEG C；Flue-gas temperature is further decreased to 40 DEG C by 300 DEG C, by heating two in a manner of shunting
The high-pressure feed water and the condensed water of secondary circuit condensate pump outlet is heated in a manner of shunting to complete that circuit main feed pump exports；
The latent heat of vaporization of water vapour contained by Some gases wheel tail gas has been recycled simultaneously.
The technical characteristic for the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses is：Including mistake
Hot device, low-pressure coal saver, the cold inner casing of half vapour, shell, gas turbine exhaust gas inlet baffle group, gas approach, goes out high-pressure economizer
Mouth flue, expansion of flue expansion joint, draining pump, Steel Structure, high-pressure economizer flow control valve, low-pressure coal saver flow-rate adjustment
Valve, DCS control systems；The cold part of vapour of horizontal arrangement, the cold inner casing of half vapour is only placed at superheater area；Presurized water reactor steam generation
The saturated vapor outlet of device is connected with the steam inlet of superheater；The steam (vapor) outlet of superheater through main inlet throttle-stop valve, throttle with
The import of steam turbine high pressure cylinder is connected；Superheater coil tubes heating surface is horizontally disposed, by low-temperature zone heating surface, middle-temperature section by
Hot face, high temperature section heating surface are in series, and superheater coil tubes are in counter-flow arrangement with flue gas flow；Low-temperature zone heating surface, medium temperature
Section heating surface, high temperature section heating surface are light pipe；It is stacked through combed cushion block between each superheater coil tubes heating surface；Superheater
Inlet header is arranged vertically, and both ends are into vapour；Superheater outlet leg is arranged vertically, and two bring out vapour；Superheater system subtracts without water spray
Warm device, superheater outlet steam temperature control the steam production of presurized water reactor by DCS control systems and enter the gas turbine of waste heat boiler
The quality of tail gas, temperature realize, superheater outlet steam temperature sliding temperature operation between 272.8 DEG C to 630 DEG C；High-pressure economizer by
The spiral finned tube of horizontally disposed height rib forms, the front and back effective 180 ° of light pipe elbows connection composition of adjacent helix fin
Long coiled pipe, 180 ° of light pipe elbows are arranged between inner casing and shell, and long coiled pipe is in counter-flow arrangement with flue gas flow；High pressure saves
Coal device inlet header is arranged vertically, both ends water inlet；High-pressure economizer outlet header is arranged vertically, both ends water outlet；Low-pressure coal saver
It is made of the spiral finned tube of horizontally disposed height rib, the front and back effective 180 ° of light pipes elbow connection group of adjacent helix fin
Growth coiled pipe, 180 ° of light pipe elbows are arranged between inner casing and shell, and long coiled pipe is in counter-flow arrangement with flue gas flow；Low pressure
Economizer inlet header is arranged vertically, both ends water inlet；Low-pressure coal saver outlet header is arranged vertically, both ends water outlet；It is controlled in DCS
Under system control, high-pressure economizer Flux Valve Control high-pressure economizer outlet feed temperature and high-pressure heater water side are adjusted
Outlet feed temperature is close；Under the control of DCS control systems, low-pressure coal saver Flux Valve Control low-pressure coal saver is adjusted
Outlet condensing water temperature is close with the condensing water temperature of low-pressure heater water side outlet into oxygen-eliminating device.
Advantageous effect of the invention：
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses makes presurized water reactor steam turbine
It is changed into the steam turbine of main steam temperature sliding temperature operation between 272.8 DEG C to 630 DEG C by wet steam turbine, in high main vapour
Temperature case, is greatly improved the import enthalpy of presurized water reactor steam turbine main steam, and the internal efficiency of each turbine stage also significantly carries
Effective enthalpy drop of presurized water reactor steam turbine is greatly improved under conditions of identical import mass flow in height, exports shaft power
It increases considerably；
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses in high Stream temperature degree operating mode,
Each turbine stage of steam turbine high pressure cylinder is set to eliminate water erosion risk, safety significantly improves；
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses in high Stream temperature degree operating mode,
Steam turbine low pressure (LP) cylinder major part turbine stage eliminates water erosion risk, and safety significantly improves, and exhaust stage blade and penultimate stage blade are wet
Degree is substantially reduced, and safety, economy significantly improve；
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses in high Stream temperature degree operating mode,
Since exhaust stage blade and penultimate stage blade humidity are substantially reduced, safety is controllable, provides and further decreases the low pressure (LP) cylinder steam discharge back of the body
Pressure improves the space of the thermal efficiency of gas turbine presurized water reactor steam turbine combined cycle system；
The waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses uses horizontal arrangement can be with
The effectively pressure drop of control superheater system, promotes the thermal efficiency of gas turbine presurized water reactor steam turbine combined cycle；
The waste heat boiler high-pressure economizer and low pressure that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses
The fume afterheat that the setting of economizer makes waste-heat boiler superheater export is fully utilized, and exhaust gas temperature can drop to 40 DEG C
Or it is lower, being expelled from each section of steam turbine steam extraction come can continue to do work in the high and low cylinder pressure of steam turbine, be converted to
The apparent heat consumption of shaft power, Steam Turbine is decreased obviously；
Gas turbine exhaust gas has compared with coal-burning boiler is discharged fume and is substantially free of SO3It is especially high with steam partial pressure, water
The high feature of dew-point temperature；Not with the low-level (stack-gas) economizer, low low-level (stack-gas) economizer and ultralow temperature economizer of prior art coal-burning boiler
Together, the low-pressure coal saver for the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses can be with recovered flue gas
In include water vapour heat of vaporization it is more than half, without by serious low-temperature corrosion, without using expensive Gao Ge, nickelic resistance to
Corrode stainless steel；
The superheater for the waste heat boiler that such as gas turbine presurized water reactor steam turbine combined cycle of the present invention is used, high pressure
The heat whole reduction that economizer, low-pressure coal saver absorb is effective caloric receptivity of waste heat boiler, this not have evaporator and vapour
The thermal efficiency (being calculated by low heat valve) of the waste heat boiler of packet may be up to record-breaking 100% or higher.
(4) it illustrates：
Fig. 1 is the sectional side view for the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle uses；
In Fig. 1：
1 gas turbine exhaust gas inlet baffle group, 2 gas approach,
3 shells, the cold inner casing of 4 half vapour,
5 superheaters, 6 high-pressure economizers,
7 low-pressure coal savers, 8 exhaust pass,
9 Steel Structures, 10 expansion of flue expansion joints,
11 draining pumps.
(5) specific implementation mode：
Embodiment 1：
In conjunction with Fig. 1 with an AP1000 generation Ⅲ nuclear powers station steam generator group, steam turbine and three H grades of combustion gas wheels
The combined cycle unit that machine is formed illustrate the preferred embodiment for realizing invention for matching used waste heat boiler.
The technical characteristic for the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle of the present invention uses is：Including mistake
Hot device, low-pressure coal saver, the cold inner casing of half vapour, shell, gas turbine exhaust gas inlet baffle group, gas approach, goes out high-pressure economizer
Mouth flue, expansion of flue expansion joint, draining pump, Steel Structure, high-pressure economizer flow control valve, low-pressure coal saver flow-rate adjustment
Valve, DCS control systems；The cold part of vapour of horizontal arrangement, the cold inner casing of half vapour is only placed at superheater area；Presurized water reactor steam generation
The saturated vapor outlet of device is connected with the steam inlet of superheater；The steam (vapor) outlet of superheater through main inlet throttle-stop valve, throttle with
The import of steam turbine high pressure cylinder is connected；Superheater coil tubes heating surface is horizontally disposed, by low-temperature zone heating surface, middle-temperature section by
Hot face, high temperature section heating surface are in series, and superheater coil tubes are in counter-flow arrangement with flue gas flow；Low-temperature zone heating surface, medium temperature
Section heating surface, high temperature section heating surface are light pipe；It is stacked through combed cushion block between each superheater coil tubes heating surface；Superheater
Inlet header is arranged vertically, and both ends are into vapour；Superheater outlet leg is arranged vertically, and two bring out vapour；Superheater system subtracts without water spray
Warm device, superheater outlet steam temperature control the steam production of presurized water reactor by DCS control systems and enter the gas turbine of waste heat boiler
The quality of tail gas, temperature realize, superheater outlet steam temperature sliding temperature operation between 272.8 DEG C to 630 DEG C；High-pressure economizer by
The spiral finned tube of horizontally disposed height rib forms, the front and back effective 180 ° of light pipe elbows connection composition of adjacent helix fin
Long coiled pipe, 180 ° of light pipe elbows are arranged between inner casing and shell, and long coiled pipe is in counter-flow arrangement with flue gas flow；High pressure saves
Coal device inlet header is arranged vertically, both ends water inlet；High-pressure economizer outlet header is arranged vertically, both ends water outlet；Low-pressure coal saver
It is made of the spiral finned tube of horizontally disposed height rib, the front and back effective 180 ° of light pipes elbow connection group of adjacent helix fin
Growth coiled pipe, 180 ° of light pipe elbows are arranged between inner casing and shell, and long coiled pipe is in counter-flow arrangement with flue gas flow；Low pressure
Economizer inlet header is arranged vertically, both ends water inlet；Low-pressure coal saver outlet header is arranged vertically, both ends water outlet；It is controlled in DCS
Under system control, high-pressure economizer Flux Valve Control high-pressure economizer outlet feed temperature and high-pressure heater water side are adjusted
Outlet feed temperature is close；Under the control of DCS control systems, low-pressure coal saver Flux Valve Control low-pressure coal saver is adjusted
Outlet condensing water temperature is close with the condensing water temperature of low-pressure heater water side outlet into oxygen-eliminating device.
The characteristic parameter of waste-heat boiler superheater：
The characteristic parameter of waste heat boiler high-pressure economizer：
The characteristic parameter of waste heat boiler low-pressure coal saver：
The cold inner casing of half vapour is made of the cold inner casing of superheater section vapour and economizer section without cooling inner casing；The cold inner casing of superheater section vapour
It is made of the cold extended surface tube of vapour, cooling working medium is 272.8 DEG C of saturated vapors；Extended surface tube row in waste heat boiler bottom, Neng Goucheng
The weight of the whole superheater surfaces of load；The cold inner casing of superheater section vapour can effectively control the thermal expansion amount of waste heat boiler；Economizer
Section is ND steel without cooling inner casing material；The relative expansion dead point of the cold inner casing of half vapour and shell in hot junction, i.e., gas turbine exhaust gas into
Gas end；Allow opposite sliding between the cold inner casing of half vapour and shell.
Outer casing bottom can bear the weight of whole heating surfaces and inner casing；Shell has collar tie beam, longitudinal rigid beam to reinforce, whole lotuses
Weight is completely transmitted to Steel Structure；Allow have thermal expansion curve between outer casing bottom and Steel Structure；Between shell and the cold inner casing of half vapour
Filled heat insulating material.
Gas approach passes through 3 sets of gas turbine exhaust gas inlet baffle groups exhaust emissions with three H grades of gas turbines respectively
Pipeline connects；Gas turbine exhaust gas inlet baffle group can be effectively isolated the gas turbine of operation and the gas turbine of stoppage in transit；Combustion gas
Turbine gas inlet baffle group is connected to cooling wind, with protect gas turbine exhaust gas inlet baffle group itself and connection flue, not by
The damage that high-temperature tail gas backflows；It is covered with heat insulating refractory material on the inside of gas approach.
Exhaust pass is provided with smoke water separator, hopper, and flue gas is hydrophobic to be pumped into secondary circuit circulating water by draining
System；Exhaust pass material is ND steel, and inside is designed with Corrosion Protection of Fiber Reinforced Plastics layer.
Claims (5)
1. a kind of waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle uses, it is characterised in that：Including superheater,
High-pressure economizer, low-pressure coal saver, the cold inner casing of half vapour, shell, gas turbine exhaust gas inlet baffle group, gas approach, outlet cigarette
Road, expansion of flue expansion joint, draining pump, Steel Structure, high-pressure economizer flow control valve, low-pressure coal saver flow control valve, DCS
Control system；The cold part of vapour of horizontal arrangement, the cold inner casing of half vapour is only placed at superheater area；PWR steam generator is satisfied
It is connected with steam (vapor) outlet with the steam inlet of superheater；The steam (vapor) outlet of superheater is through main inlet throttle-stop valve, throttle and vapor wheel
The import of machine high pressure cylinder is connected；Superheater coil tubes heating surface is horizontally disposed, by low-temperature zone heating surface, middle-temperature section heating surface,
High temperature section heating surface is in series, and superheater coil tubes are in counter-flow arrangement with flue gas flow；Low-temperature zone heating surface, middle-temperature section are heated
Face, high temperature section heating surface are light pipe；It is stacked through combed cushion block between each superheater coil tubes heating surface；Superheater import joins
Case is arranged vertically, and both ends are into vapour；Superheater outlet leg is arranged vertically, and two bring out vapour；Superheater system is without direct-contact desuperheater, mistake
Hot device outlet steam temperature controls the matter of the steam production and the gas turbine exhaust gas for entering waste heat boiler of presurized water reactor by DCS control systems
Amount, temperature realize, the sliding temperature operation between 272.8 DEG C to 630 DEG C of superheater outlet steam temperature；High-pressure economizer is by horizontally disposed
Height rib spiral finned tube composition, the effective 180 ° of light pipes elbow connection group growth of front and back adjacent helix fin is snakelike
Pipe, 180 ° of light pipe elbows are arranged between inner casing and shell, and long coiled pipe is in counter-flow arrangement with flue gas flow；High-pressure economizer into
Mouth header is arranged vertically, both ends water inlet；High-pressure economizer outlet header is arranged vertically, both ends water outlet；Low-pressure coal saver is by level
The spiral finned tube of the height rib of arrangement forms, the front and back effective 180 ° of light pipes elbow connection group growth snake of adjacent helix fin
Shape pipe, 180 ° of light pipe elbows are arranged between inner casing and shell, and long coiled pipe is in counter-flow arrangement with flue gas flow；Low-pressure coal saver
Inlet header is arranged vertically, both ends water inlet；Low-pressure coal saver outlet header is arranged vertically, both ends water outlet；In DCS control system controls
Under system, adjusts high-pressure economizer Flux Valve Control high-pressure economizer outlet feed temperature and given with high-pressure heater water side outlet
Coolant-temperature gage is close；Under the control of DCS control systems, it is solidifying to adjust the outlet of low-pressure coal saver Flux Valve Control low-pressure coal saver
Temperature is born water to be close with the condensing water temperature of low-pressure heater water side outlet into oxygen-eliminating device.
2. the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle according to claim 1 uses, feature
It is that the cold inner casing of half vapour is made of the cold inner casing of superheater section vapour and economizer section without cooling inner casing；The cold inner casing of superheater section vapour
It is made of the cold extended surface tube of vapour, cooling working medium is 272.8 DEG C of saturated vapors；Extended surface tube row in waste heat boiler bottom, Neng Goucheng
The weight of the whole superheater surfaces of load；The cold inner casing of superheater section vapour can effectively control the thermal expansion amount of waste heat boiler；Economizer
Section is ND steel without cooling inner casing material；The relative expansion dead point of the cold inner casing of half vapour and shell in hot junction, i.e., gas turbine exhaust gas into
Gas end；Allow opposite sliding between the cold inner casing of half vapour and shell.
3. the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle according to claim 1 uses, feature
It is the weight that the outer casing bottom can bear whole heating surfaces and inner casing；Shell has collar tie beam, longitudinal rigid beam to reinforce, whole lotuses
Weight is completely transmitted to Steel Structure；Allow have thermal expansion curve between outer casing bottom and Steel Structure；Between shell and the cold inner casing of half vapour
Filled heat insulating material.
4. the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle according to claim 1 uses, feature
Being the gas approach passes through 3 sets of gas turbine exhaust gas inlet baffle groups exhaust emissions with three H grades of gas turbines respectively
Pipeline connects；Gas turbine exhaust gas inlet baffle group can be effectively isolated the gas turbine of operation and the gas turbine of stoppage in transit；Combustion gas
Turbine gas inlet baffle group is connected to cooling wind, with protect gas turbine exhaust gas inlet baffle group itself and connection flue, not by
The damage that high-temperature tail gas backflows；It is covered with heat insulating refractory material on the inside of gas approach.
5. the waste heat boiler that gas turbine presurized water reactor steam turbine combined cycle according to claim 1 uses, feature
It is that the exhaust pass is provided with smoke water separator, hopper, flue gas is hydrophobic to be pumped into secondary circuit circulating water by draining
System；Exhaust pass material is ND steel, and inside is designed with Corrosion Protection of Fiber Reinforced Plastics layer.
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| CN108087122B (en) * | 2017-11-21 | 2019-10-22 | 中国航发沈阳发动机研究所 | Lightweight gas turbine spray cooling system design method |
| EP3963259A1 (en) * | 2019-04-30 | 2022-03-09 | CNIM Environnement & Energie EPC | Self-supporting module assembled around a heat exchanger of a boiler comprising a horizontal passage, and method for installing and maintaining the horizontal passage of such a boiler |
| CN110617470A (en) * | 2019-10-12 | 2019-12-27 | 清华大学 | Superheated steam production system and superheated steam production method |
| CN112197257B (en) * | 2020-10-28 | 2022-08-23 | 西安热工研究院有限公司 | Steam generator comprehensive experiment system based on coal-fired power plant |
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