CN106988795A - A kind of turbine system - Google Patents
A kind of turbine system Download PDFInfo
- Publication number
- CN106988795A CN106988795A CN201710243763.2A CN201710243763A CN106988795A CN 106988795 A CN106988795 A CN 106988795A CN 201710243763 A CN201710243763 A CN 201710243763A CN 106988795 A CN106988795 A CN 106988795A
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- steam turbine
- pressure cylinder
- turbine
- peak regulation
- admission
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- 230000033228 biological regulation Effects 0.000 claims abstract description 143
- 230000000740 bleeding effect Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims 1
- 238000013021 overheating Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000008676 import Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000009183 running Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- 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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- 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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a kind of turbine system, including steam turbine high-pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and the generator arranged with rotating shaft, the output shaft of peak regulation steam turbine is connected with rotating shaft by SSS clutch coaxials；Steam turbine high-pressure cylinder connects boiler superheater and boiler reheater, boiler reheater connects Steam Turbine Through IP Admission, Steam Turbine Through IP Admission connects the first turbine low pressure cylinder, Steam Turbine Through IP Admission also connects the air intake of the second turbine low pressure cylinder by the first control valve, and the first turbine low pressure cylinder, the venthole of the second turbine low pressure cylinder connect boiler superheater by condenser；Peak regulation steam turbine high-pressure cylinder connects boiler superheater and boiler reheater, and boiler reheater connection peak regulation Steam Turbine Through IP Admission, peak regulation Steam Turbine Through IP Admission connects the second turbine low pressure cylinder by the second control valve.When burden requirement exceedes Turbo-generator Set EIAJ, peak regulation steam turbine is operated together by SSS clutches and basic Turbo-generator Set, reaches peak regulation purpose.
Description
Technical field
The present invention relates to turbine system technical field, more specifically to a kind of turbine system.
Background technology
China's energy resource structure is mainly characterized by rich coal, few oil, lacks vapour, and hydroelectric resources exploitation is limited.By energy resource structure
Influence, China's power supply architecture considerably long in the period of in all will be based on coal electricity.The electric installed capacity accounting of current China coal is near
70%, only account for 8% for the oil electricity of peak regulation, vapour electricity, water-storage installation proportion.With the fast development of China's economy, resident
The proportion of electricity consumption and commercial power increases year by year, causes power load peak-valley difference to increase sharply so that according to what is designed with base load
Generating set must not be not involved in peak regulation, and be generally in underrun.
In summary, how a kind of turbine system for meeting different operating modes is provided, be current those skilled in the art urgently
To be solved the problem of.
The content of the invention
In view of this, it is an object of the invention to provide a kind of turbine system, the system can be applied to different operating modes, protect
The normal operation of card system.
To achieve these goals, the present invention provides following technical scheme：
A kind of turbine system, it is characterised in that the steam turbine high-pressure cylinder arranged including same rotating shaft, Steam Turbine Through IP Admission,
First turbine low pressure cylinder, the second turbine low pressure cylinder and generator, peak regulation steam turbine high-pressure cylinder, peak regulation Steam Turbine Through IP Admission
Output shaft is connected with the rotating shaft by SSS clutch coaxials；
The air intake connection boiler superheater of the steam turbine high-pressure cylinder, the venthole connection pot of the steam turbine high-pressure cylinder
The air intake of stove reheater, the venthole of the boiler reheater connects the air intake of the Steam Turbine Through IP Admission；
The venthole of the Steam Turbine Through IP Admission is connected in the air intake of first turbine low pressure cylinder, the steam turbine
The venthole of cylinder pressure also connects the air intake of second turbine low pressure cylinder by the first control valve；
The air intake of the peak regulation steam turbine high-pressure cylinder connects the boiler superheater, the peak regulation steam turbine high-pressure cylinder
Venthole connects the boiler reheater；The air intake of the peak regulation Steam Turbine Through IP Admission connects the boiler reheater, described
The venthole of peak regulation Steam Turbine Through IP Admission connects the air intake of second turbine low pressure cylinder by the second control valve, for
The second turbine low pressure cylinder steam supply.
Preferably, the peak regulation Steam Turbine Through IP Admission side is connected to the steam turbine height by the SSS clutches
Cylinder pressure side；
Or, the peak regulation Steam Turbine Through IP Admission side is connected to the generator side by the SSS clutches；
Or, the peak regulation steam turbine high-pressure cylinder side is connected to the steam turbine high-pressure cylinder by the SSS clutches
Side；
Or, the peak regulation steam turbine high-pressure cylinder side is connected to the generator side by the SSS clutches.
Preferably, in addition to steam bleeding system, the steam bleeding system is used to extract in the steam turbine high-pressure cylinder, steam turbine and pressed
A certain amount of steam and heating boiler feed water in cylinder, the first turbine low pressure cylinder, the second turbine low pressure cylinder, boiler feedwater heating
The backward boiler superheater conveying.
Preferably, the peak regulation steam turbine high-pressure cylinder and peak regulation Steam Turbine Through IP Admission are the cylinder for being not provided with steam bleeding system
Body；
And/or the peak regulation steam turbine high-pressure cylinder and peak regulation Steam Turbine Through IP Admission are cylinder combined structure.
Preferably, the boiler reheater includes：
It is connected to the first reheating between the venthole of the steam turbine high-pressure cylinder and the Steam Turbine Through IP Admission air intake
Device；
Between the air intake for being connected to the steam drain of the peak regulation steam turbine high-pressure cylinder and the peak regulation Steam Turbine Through IP Admission
The second reheater, the entrance of first reheater and second reheater connected by the 3rd control valve, described first
The outlet of reheater and second reheater is connected by the 4th control valve.
Preferably, high exhaust check valve, high row's check are provided with the exhaust line of the peak regulation steam turbine high-pressure cylinder
Valve parallel connection, which is fallen, warms up in valve, the high exhaust check valve close to the peak regulation steam turbine high-pressure cylinder exhaust region provided with blow-off line, described
Blow-off line connects condenser, and the blow-off line is provided with ventilation valve.
Preferably, the air intake of the steam turbine high-pressure cylinder is provided with high-pressure main throttle valve and the high pressure for adjusting steam flow
Pitch, the air intake of the Steam Turbine Through IP Admission is provided with intermediate pressure main stop valve and the middle pressure pitch for adjusting steam flow；It is described
The air intake of peak regulation steam turbine high-pressure cylinder is provided with high-pressure main throttle valve and the high-pressure governing valve for adjusting steam flow, the peak regulation vapour
The air intake of turbine intermediate pressure cylinder is provided with intermediate pressure main stop valve and the middle pressure pitch for adjusting steam flow.
Preferably, first turbine low pressure cylinder, the venthole of the second turbine low pressure cylinder connect condensing by pipeline
Device, the condenser connects the boiler superheater by pipeline.
Turbine system provided by the present invention is made up of basic Turbo-generator Set and peak regulation steam turbine, according to thermal power plant
The load character run round the clock, generally, when night is compared with underload, only basic Turbo-generator Set operation, peak regulation
Steam turbine stand-by heat, so, need to increase unit output when daytime, when peak regulation steam turbine is incorporated to operation, peak regulation steam turbine is general
It is very hot state or hot starting, hot start, toggle speed is fast.In underload, basic Turbo-generator Set operation, peak regulation steam turbine is hot standby
With.When burden requirement exceedes basic Turbo-generator Set EIAJ, peak regulation steam turbine passes through SSS clutches and basic steamer
Generating set is operated together.Now, basic Turbo-generator Set oepration at full load, peak regulation steam turbine variable load operation plays tune
Peak is acted on.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the schematic diagram of the specific embodiment one of turbine system provided by the present invention；
Fig. 2 is the schematic diagram of the specific embodiment two of turbine system provided by the present invention；
Fig. 3 is the schematic diagram of boiler reheater system in turbine system provided by the present invention.
In Fig. 1-3：
1 it is the first pipeline, 2 be the second pipeline, 3 be the 3rd pipeline, 4 be the 4th pipeline, 5 be the 5th pipeline, 6 is the 6th pipe
Road, 7 be the 7th pipeline, 8 be the 8th pipeline, 9 be the 9th pipeline, 10 be the tenth pipeline, 11 be the 11st pipeline, 12 be the 12nd
Pipeline, 13 be the 13rd pipeline, 14 be the 14th pipeline, 15 be the 15th pipeline；
21 it is steam turbine high-pressure cylinder, 22 be Steam Turbine Through IP Admission, 23 be the first turbine low pressure cylinder, 24 is the second steam turbine
Low pressure (LP) cylinder, 25 be generator, 26 be peak regulation steam turbine high-pressure cylinder, 27 be peak regulation Steam Turbine Through IP Admission.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The core of the present invention is to provide a kind of turbine system, and the system can be applied to different operating modes, it is ensured that system
Normal operation.
Fig. 1 to Fig. 3 is refer to, Fig. 1 is the schematic diagram of the specific embodiment one of turbine system provided by the present invention；Figure
2 be the schematic diagram of the specific embodiment two of turbine system provided by the present invention；Fig. 3 is steam turbine system provided by the present invention
The schematic diagram of boiler reheater system in system.
A kind of turbine system provided by the present invention, including arranged with rotating shaft steam turbine high-pressure cylinder 21, in steam turbine
Cylinder pressure 22, the first turbine low pressure cylinder 23, the second turbine low pressure cylinder 24 and generator 25, peak regulation steam turbine high-pressure cylinder 26, tune
The output shaft of peak Steam Turbine Through IP Admission 27 is connected with rotating shaft by SSS clutch coaxials.
The air intake connection boiler superheater of steam turbine high-pressure cylinder 21, the venthole connection boiler of steam turbine high-pressure cylinder 21 is again
The air intake of hot device, the venthole of boiler reheater connects the air intake of Steam Turbine Through IP Admission 22.
The venthole of Steam Turbine Through IP Admission 22 connects the air intake of the first turbine low pressure cylinder 23, Steam Turbine Through IP Admission 22
Venthole also connects the air intake of the second turbine low pressure cylinder 24 by the first control valve.
The air intake connection boiler superheater of peak regulation steam turbine high-pressure cylinder 26, the venthole of peak regulation steam turbine high-pressure cylinder 26 connects
Connect boiler reheater；The air intake connection boiler reheater of peak regulation Steam Turbine Through IP Admission 27, peak regulation Steam Turbine Through IP Admission 27 goes out
Steam ports connects the air intake of the second turbine low pressure cylinder 24 by the second control valve, for being supplied to the second turbine low pressure cylinder 24
Vapour.
Need explanation when, above-mentioned steam turbine high-pressure cylinder 21, Steam Turbine Through IP Admission 22, the first turbine low pressure cylinder 23, the
Two turbine low pressure cylinders 24 and generator 25 are arranged with rotating shaft, are formed basic Turbo-generator Set, are referred to steam turbine high-pressure cylinder
21st, Steam Turbine Through IP Admission 22, turbine low pressure cylinder output shaft it is coaxial, and the input shaft of the output shaft and generator 25 is coaxial.
Peak regulation steam turbine includes peak regulation steam turbine high-pressure cylinder 26 and peak regulation Steam Turbine Through IP Admission 27, and the output shaft of the two is with being somebody's turn to do
Rotating shaft is connected by SSS clutches.The input side of SSS clutches and the output end of alternative one are connected, the output of SSS clutches
Side is connected with the input shaft of steam turbine high-pressure cylinder 21 or generator 25.Peak regulation steam turbine passes through SSS clutches and basic steamer
The axle of generating set is coaxially connected to form a main shaft.
Peak regulation steam turbine includes peak regulation steam turbine high-pressure cylinder 26 and peak regulation Steam Turbine Through IP Admission 27, peak regulation steam turbine high-pressure cylinder
26 venthole connection boiler reheater, the venthole of peak regulation Steam Turbine Through IP Admission 27 passes through second control valve b the second vapour of connection
The air intake of turbine low pressure (LP) cylinder 24.
Optionally, the import of high pressure cylinder 26 of peak regulation steam turbine is provided with high-pressure main throttle valve and high-pressure governing valve, and/or peak regulation steamer
The import of intermediate pressure cylinder 27 of machine is provided with intermediate pressure main stop valve and middle pressure pitch, and high-pressure governing valve and middle pressure pitch can change into peak regulation vapour
The steam flow of turbine.
Optionally, above-mentioned basic Turbo-generator Set is designed with steam bleeding system, and peak regulation steam turbine does not have steam bleeding system.Can
Choosing, peak regulation steam turbine high-pressure cylinder 26 and peak regulation Steam Turbine Through IP Admission 27 are cylinder combined structure, and peak regulation steam turbine can be realized quickly
Start.
When above-mentioned turbine system is low load condition, basic Turbo-generator Set can be used only, peak regulation steam turbine is
Stand-by state.When load increases and exceedes the EIAJ of basic Turbo-generator Set, peak regulation steam turbine operation can be controlled,
It is operated together peak regulation steam turbine and basic Turbo-generator Set, so as to reach the effect of peak regulation.
Specific control mode can be in the following manner：During basic Turbo-generator Set operation, feedwater is laggard by heating of drawing gas
Enter boiler, and discharged by boiler superheater, done work, entered by the second pipeline 2 into steam turbine high-pressure cylinder 21 by the first pipeline 1
Enter boiler reheater heating, entered by the 3rd pipeline 3 after the acting of Steam Turbine Through IP Admission 22, pass through the 4th pipeline 4, the 5th pipeline
5 discharge Steam Turbine Through IP Admissions 22, the 4th pipeline 4 and the 5th pipeline 5 connect the 6th pipeline 6, and the 6th pipeline 6 connects the 8th pipeline 8,
8th pipeline 8 connects the air intake of the first turbine low pressure cylinder 23, is done work subsequently into the first turbine low pressure cylinder 23, the 6th pipe
Road 6 connects the 7th pipeline 7, and the 7th pipeline 7 connects the 9th pipeline 9, and the 9th pipeline 9 connects second turbine low pressure cylinder 24 and enters vapour
Mouthful, done work subsequently into the second turbine low pressure cylinder 24, now, the first control valve (valve a) standard-sized sheets in figure, the second control valve (figure
Middle valve b) is closed.
Optionally, the gas after acting can be cooled down and be changed into after liquid water by condenser, be sent out again by basic steamer
Enter boiler after the heating of drawing gas of group of motors, start new circulation.
When burden requirement is close to basic Turbo-generator Set EIAJ, peak regulation steam turbine operation can be controlled.Specifically
The first control valve a can be gradually turned down, only allows a small amount of steam to enter the second turbine low pressure cylinder 24, it is ensured that air blast does not occur and rubs for it
Wipe.And the second control valve b is gradually opened to standard-sized sheet, the steam discharge for setting up the intermediate pressure cylinder of peak regulation steam turbine enters the second steam turbine low-pressure
The path of cylinder 24.The steam of boiler reheater is entered after the acting of peak regulation Steam Turbine Through IP Admission 27 by the 14th pipeline 14, is entered
Second turbine low pressure cylinder 24.
When peak regulation turbine speed reaches basic Turbo-generator Set rotating speed, SSS clutch engagements, peak regulation steam turbine with
Basic Turbo-generator Set run-in synchronism, drives generator 25 to generate electricity together.
Turbine system provided by the present invention is made up of basic Turbo-generator Set and peak regulation steam turbine.According to thermal power plant
The load character run round the clock, generally, when night is compared with underload, only basic Turbo-generator Set operation, peak regulation
Steam turbine stand-by heat, so, need to increase unit output when daytime, when peak regulation steam turbine is incorporated to operation, peak regulation steam turbine is related
The temperature of part is still higher, so peak regulation steam turbine is usually very hot state or hot starting, hot start, toggle speed is fast.
Optionally, on the basis of any one above-mentioned embodiment, the import of steam turbine high-pressure cylinder 21 is provided with the main vapour of high pressure
Door and high-pressure governing valve, the import of Steam Turbine Through IP Admission 22 are provided with intermediate pressure main stop valve and middle pressure pitch, and high-pressure governing valve and middle pressure pitch can
To change the steam flow for entering steam turbine.Steam enters steam turbine high-pressure cylinder 21, Steam Turbine Through IP Admission 22, first, second vapour
After the acting of turbine low pressure (LP) cylinder, generator 25 is passed to by rotating shaft and produces electric energy.
On the basis of any one above-mentioned embodiment, peak regulation steam turbine is connected to generator 25 by SSS clutches
Side, or peak regulation steam turbine are connected to the side of steam turbine high-pressure cylinder 21 by SSS clutches.Specifically, pressed in peak regulation steam turbine
The side of cylinder 27 is connected to the side of steam turbine high-pressure cylinder 21 by SSS clutches；Or, the side of peak regulation Steam Turbine Through IP Admission 27 by SSS from
Clutch is connected to the side of generator 25；Or, the side of peak regulation steam turbine high-pressure cylinder 26 is connected to steam turbine high-pressure cylinder by SSS clutches
21 sides；Or, the side of peak regulation steam turbine high-pressure cylinder 26 is connected to the side of generator 25 by SSS clutches.
Fig. 1 and Fig. 2 are refer to, basic Turbo-generator Set and peak regulation steam turbine constitute the side provided with above-described embodiment
Case is similar, in the present embodiment, and one end of steam turbine high-pressure cylinder 21 is connected by SSS clutches with one end of peak regulation steam turbine,
The input side of SSS clutches is connected with the rotating shaft of the intermediate pressure cylinder 27 of peak regulation steam turbine, and the outlet side and steam turbine of SSS clutches are high
The rotating shaft connection of cylinder pressure 21.
The difference of two schemes is that basic Turbo-generator Set is different with the link position of peak regulation steam turbine, other functions
Two kinds of designs are identicals.
On the basis of above-described embodiment, in addition to steam bleeding system, steam bleeding system be used to extracting steam turbine high-pressure cylinder 21,
A certain amount of steam and heating boiler in Steam Turbine Through IP Admission 22, the first turbine low pressure cylinder 23, the second turbine low pressure cylinder 24
Feedwater, boiler superheater is conveyed to after boiler feedwater heating.In a kind of more reliable way, in steam turbine high-pressure cylinder 21, vapour
Turbine intermediate pressure cylinder 22, the first turbine low pressure cylinder 23, hole of drawing gas is set, to obtain on the cylinder body of the second turbine low pressure cylinder 24
Heater is provided with a certain amount of steam, steam bleeding system, to be heated to boiler feedwater, the feedwater after heating is conveyed to
In boiler superheater.
In addition, it is necessary to explanation, in order to accelerate the toggle speed of peak regulation steam turbine, peak regulation steam turbine high-pressure cylinder 26 and tune
Peak Steam Turbine Through IP Admission 27 is the cylinder body for being not provided with steam bleeding system.Optionally, peak regulation steam turbine high-pressure cylinder 26 and peak regulation steamer
Machine intermediate pressure cylinder 27 can be designed using cylinder is closed.
On the basis of any one above-mentioned embodiment, boiler reheater includes：First reheater and the second reheater,
Refer in Fig. 1 to Fig. 3, figure is the first reheater H and the second reheater R.
First reheater is connected between the air intake of the venthole of steam turbine high-pressure cylinder 21 and Steam Turbine Through IP Admission 22, the
Two reheaters are connected between the air intake of the steam drain of peak regulation steam turbine high-pressure cylinder 26 and peak regulation Steam Turbine Through IP Admission 27, and first
The entrance of reheater and the second reheater by the 3rd control valve (valve c) connections in figure, the first reheater and the second reheater
Outlet passes through the (valve d) connections in figure of the 4th control valve.
Optionally, on the basis of any one above-mentioned embodiment, set on the exhaust line of peak regulation steam turbine high-pressure cylinder 26
High exhaust check valve is equipped with, high exhaust check valve parallel connection falls to warm up the steam discharge in valve, high exhaust check valve close to peak regulation steam turbine high-pressure cylinder 26
Side is provided with blow-off line, blow-off line connection condenser, and blow-off line is provided with ventilation valve.
It should be noted that inverse provided with high row in the blow-off line of peak regulation steam turbine high-pressure cylinder 26, i.e. the 13rd pipeline 13
Warm valve is fallen in only valve, high exhaust check valve parallel connection, (close to high pressure cylinder exhaust region) provided with high pressure cylinder steam discharge to condensing before high exhaust check valve
The pipeline of device and corresponding ventilation valve.Warming up the effect of valve is, when peak regulation steam turbine is not run for a long time, check is arranged from height
Steam is drawn after valve high pressure cylinder is carried out to fall to warm up.When the metal temperature of peak regulation steam turbine high-pressure cylinder 26 reaches requirement, close warm
Valve, and ventilation valve is opened, peak regulation steam turbine high-pressure cylinder 26 is in vacuum state, started so as to reduce peak regulation steam turbine as far as possible
The air blast caloric value of peak regulation steam turbine high-pressure cylinder 26 in journey, it is to avoid the mistake of peak regulation steam turbine high-pressure cylinder 26 before high exhaust check valve is not switched on
Heat.
On the basis of any one above-mentioned embodiment, the first turbine low pressure cylinder 23, the second turbine low pressure cylinder 24
Venthole boiler superheater is connected by condenser.
It should be noted that refer to Fig. 1 and Fig. 2, the first turbine low pressure cylinder 23, the second turbine low pressure cylinder 24 pass through
Tenth pipeline 10, the 11st pipeline 11 are discharged into condenser, and condenser arranges that steam cooling becomes using high-low pressure, double back pressure forms
After liquid water, again by boiler is entered after the heating of drawing gas of basic Turbo-generator Set, start new circulation.
For the structure of the turbine system provided in any one above-mentioned embodiment, peak regulation steam turbine uses intermediate pressure cylinder
Operating procedure is as follows in Starting mode：
The first control valve a is gradually turned down, only allows a small amount of steam to enter the second turbine low pressure cylinder 24, it is ensured that it is not roused
Wind rubs.The second control valve b is gradually opened to standard-sized sheet, optionally, non-return flap can be set in the 15th pipeline 15, steam will not
Peak regulation Steam Turbine Through IP Admission 27 is redirected back into, the steam discharge of peak regulation Steam Turbine Through IP Admission 27 is set up into the second turbine low pressure cylinder 24
Path.The intermediate pressure main stop valve of peak regulation Steam Turbine Through IP Admission 27 is opened, the middle pressure pitch of peak regulation Steam Turbine Through IP Admission 27 is gradually opened,
Steam is entered after the acting of peak regulation Steam Turbine Through IP Admission 27 by the 14th pipeline 14, passes through the 15th pipeline 15, the 17th pipeline
17th, the 9th pipeline 9 enters the second turbine low pressure cylinder 24.
When meeting peak regulation steamer machine-cut cylinder condition, the 3rd control valve c and the 4th control valve d is gradually turned down, reduces and enters
Second reheater R steam flow.Reheater temperature control is combined using gas baffle control by the way of spray desuperheating control, and one
As in the case of using gas baffle control, in emergency circumstances using spray desuperheating control.Due to entering the second reheater R steam
Flow is reduced, and the corresponding steam flow into the first reheater H will increase, at this time, it may be necessary to adjust the second reheater simultaneously
R, the corresponding gas baffles of the first reheater H or attemperator, it is ensured that the second reheater R, the first reheater H temperature meet and wanted
Ask.The high-pressure main throttle valve of peak regulation steam turbine high-pressure cylinder 26 is opened, the ventilation valve of peak regulation steam turbine high-pressure cylinder 26 is closed, high pressure is adjusted
The high-pressure governing valve of cylinder 26, increase high pressure cylinder 26 enters steam flow amount.
It is continuously increased as high pressure cylinder 26 enters steam flow amount, closes the 3rd control valve c and the 4th control valve d, the second reheater R
With the first reheater H independent operatings, the steam discharge of basic power generator turbine high pressure cylinder 21 enters the first reheater H, peak regulation steam turbine
The steam discharge of high pressure cylinder 26 enters the second reheater R.With being continuously increased that peak regulation steam turbine is exerted oneself, the first control valve is progressively closed off
A is to fully closed, the first turbine low pressure cylinder 23 and the independent operating of the second turbine low pressure cylinder 24.Basic turbine generator after so setting
Unit oepration at full load, peak regulation steam turbine variable load operation, plays Peak Load Adjustment.
Peak regulation steam turbine is as follows using senior school biology mode operating procedure：The first control valve a is gradually turned down, only
A small amount of steam is allowed to enter the second turbine low pressure cylinder, it is ensured that air blast friction does not occur for it.The second control valve b is gradually opened to complete
Open.Optionally, non-return flap can be set in the 15th pipeline 15, steam will not be redirected back into peak regulation Steam Turbine Through IP Admission 27, build
The vertical steam discharge of intermediate pressure cylinder 27 enters the path of the second turbine low pressure cylinder.Open the high-pressure main throttle valve and intermediate pressure cylinder 27 of high pressure cylinder 26
Intermediate pressure main stop valve, adjusts the high-pressure governing valve of high pressure cylinder 26 and the middle pressure pitch of intermediate pressure cylinder 27, and increase peak regulation steam turbine enters steam flow amount,
Increase peak regulation turbine speed.When peak regulation turbine speed reaches basic Turbo-generator Set rotating speed, SSS clutch engagements,
Peak regulation steam turbine and basic Turbo-generator Set run-in synchronism, drive electrical power generators together.As peak regulation steam turbine enters steam flow
Amount is continuously increased, and closes the 3rd control valve c, the 4th control valve d, the second reheater R and the first reheater H independent operatings, gradually
The first control valve a is closed to fully closed, the first turbine low pressure cylinder 23 and the independent operating of the second turbine low pressure cylinder 24.It is so just real
Existing, basic Turbo-generator Set oepration at full load, peak regulation steam turbine variable load operation plays Peak Load Adjustment.
When burden requirement is less than basic Turbo-generator Set EIAJ, basic Turbo-generator Set operation is only needed, is adjusted
Peak steam turbine needs out of service.The continuous decline that peak regulation steam turbine is exerted oneself, the high-pressure governing valve of peak regulation steam turbine high-pressure cylinder 26
Constantly turn down, be gradually opened the 3rd control valve c, the 4th control valve d, it is ensured that a certain amount of steam enters the second reheater R；Gradually
Open the first control valve a, it is ensured that a certain amount of steam enters the second turbine low pressure cylinder.The high-pressure governing valve of high pressure cylinder 26 is constantly closed
It is small, the continuous decline that peak regulation steam turbine is exerted oneself, peak regulation steam turbine reduction of speed, when the input side rotating speed of SSS clutches is less than outlet side
Rotating speed, SSS clutches depart from, and the rotating shaft of the axle of peak regulation steam turbine and basic turbine LP rotors departs from, and peak regulation steam turbine stops
Fortune.Then progressively close off the second control valve b, open the first control valve a to standard-sized sheet, the first turbine low pressure cylinder 23 and the second steamer
The paired running of machine low pressure (LP) cylinder 24.The 3rd control valve c, the 4th control valve d to standard-sized sheet are gradually opened, the second reheater R and first is again
Hot device H paired runnings, basic Turbo-generator Set is run alone.
Except the primary structure and part of the turbine system that above-described embodiment is provided, other of the turbine system are each
Partial structure refer to prior art, repeat no more herein.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
Turbine system provided by the present invention is described in detail above.Specific case used herein is to this
The principle and embodiment of invention are set forth, the explanation of above example be only intended to help to understand the present invention method and
Its core concept.It should be pointed out that for those skilled in the art, not departing from the premise of the principle of the invention
Under, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the protection of the claims in the present invention
In the range of.
Claims (8)
1. a kind of turbine system, it is characterised in that the steam turbine high-pressure cylinder (21) arranged including same rotating shaft, Steam Turbine Through IP Admission
(22), the first turbine low pressure cylinder (23), the second turbine low pressure cylinder (24) and generator (25), peak regulation steam turbine high-pressure cylinder
(26), the output shaft of peak regulation Steam Turbine Through IP Admission (27) is connected with the rotating shaft by SSS clutch coaxials；
The air intake connection boiler superheater of the steam turbine high-pressure cylinder (21), the venthole of the steam turbine high-pressure cylinder (21) connects
The air intake of boiler reheater is connect, the venthole of the boiler reheater connects the air intake of the Steam Turbine Through IP Admission (22)；
The venthole of the Steam Turbine Through IP Admission (22) connects the air intake of first turbine low pressure cylinder (23), the steamer
The venthole of machine intermediate pressure cylinder (22) also connects the air intake of second turbine low pressure cylinder (24) by the first control valve；
The air intake of the peak regulation steam turbine high-pressure cylinder (26) connects the boiler superheater, the peak regulation steam turbine high-pressure cylinder
(26) venthole connects the boiler reheater；The air intake of the peak regulation Steam Turbine Through IP Admission (27) connects the boiler again
Hot device, the venthole of the peak regulation Steam Turbine Through IP Admission (27) connects second turbine low pressure cylinder by the second control valve
(24) air intake, for the second turbine low pressure cylinder (24) steam supply.
2. turbine system according to claim 1, it is characterised in that peak regulation Steam Turbine Through IP Admission (27) side passes through
The SSS clutches are connected to the steam turbine high-pressure cylinder (21) side；
Or, peak regulation Steam Turbine Through IP Admission (27) side is connected to the generator (25) side by the SSS clutches；
Or, peak regulation steam turbine high-pressure cylinder (26) side is connected to the steam turbine high-pressure cylinder by the SSS clutches
(21) side；
Or, peak regulation steam turbine high-pressure cylinder (26) side is connected to the generator (25) side by the SSS clutches.
3. turbine system according to claim 2, it is characterised in that also including steam bleeding system, the steam bleeding system is used
It is low in the extraction steam turbine high-pressure cylinder (21), Steam Turbine Through IP Admission (22), the first turbine low pressure cylinder (23), the second steam turbine
A certain amount of steam and heating boiler feed water in cylinder pressure (24), the backward boiler superheater conveying of boiler feedwater heating.
4. turbine system according to claim 3, it is characterised in that the peak regulation steam turbine high-pressure cylinder (26) and peak regulation
Steam Turbine Through IP Admission (27) is the cylinder body for being not provided with steam bleeding system；
And/or the peak regulation steam turbine high-pressure cylinder (26) and peak regulation Steam Turbine Through IP Admission (27) are cylinder combined structure.
5. the turbine system according to Claims 1-4 any one, it is characterised in that the boiler reheater includes：
It is connected to first between the venthole of the steam turbine high-pressure cylinder (21) and the Steam Turbine Through IP Admission (22) air intake
Reheater；
It is connected to the steam drain of the peak regulation steam turbine high-pressure cylinder (26) and the air intake of the peak regulation Steam Turbine Through IP Admission (27)
Between the second reheater, the entrance of first reheater and second reheater is connected by the 3rd control valve, described
The outlet of first reheater and second reheater is connected by the 4th control valve.
6. turbine system according to claim 5, it is characterised in that the steam discharge of the peak regulation steam turbine high-pressure cylinder (26)
High exhaust check valve is provided with pipeline, the high exhaust check valve parallel connection, which is fallen, warms up in valve, the high exhaust check valve close to the peak regulation
Steam turbine high-pressure cylinder (26) exhaust region is provided with blow-off line, blow-off line the connection condenser, and the blow-off line and set
There is ventilation valve.
7. turbine system according to claim 6, it is characterised in that the air intake of the steam turbine high-pressure cylinder (21) is set
There are high-pressure main throttle valve and the high-pressure governing valve for adjusting steam flow, the air intake of the Steam Turbine Through IP Admission (22) is provided with middle pressure
Main inlet throttle-stop valve and the middle pressure pitch for adjusting steam flow；The air intake of the peak regulation steam turbine high-pressure cylinder (26) is provided with high pressure master
Porthole and the high-pressure governing valve for adjusting steam flow, the air intake of the peak regulation Steam Turbine Through IP Admission (27) is provided with the middle main vapour of pressure
Door and the middle pressure pitch for adjusting steam flow.
8. turbine system according to claim 7, it is characterised in that first turbine low pressure cylinder (23), second
The venthole of turbine low pressure cylinder (24) connects condenser by pipeline, and the condenser connects the boiler overheating by pipeline
Device.
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| CN201710243763.2A CN106988795A (en) | 2017-04-14 | 2017-04-14 | A kind of turbine system |
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| CN201710243763.2A CN106988795A (en) | 2017-04-14 | 2017-04-14 | A kind of turbine system |
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Cited By (6)
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| CN111042881A (en) * | 2018-10-12 | 2020-04-21 | 上海明华电力技术工程有限公司 | Wide-load high-efficiency steam turbine generator unit with part of cylinders capable of being cut off |
| CN113027553A (en) * | 2021-03-22 | 2021-06-25 | 西安热工研究院有限公司 | System for improving unit operation economy and flexibility |
| CN113503194A (en) * | 2021-08-11 | 2021-10-15 | 山东大学 | Full-load deep peak regulation device and method for steam turbine |
| CN114060107A (en) * | 2021-12-23 | 2022-02-18 | 中电华创电力技术研究有限公司 | Steam turbine system for deep flexible peak shaving |
| CN114810250A (en) * | 2022-04-14 | 2022-07-29 | 重庆赛迪热工环保工程技术有限公司 | Power generation thermodynamic system for reducing heat loss of steam turbine exhaust |
| CN114991894A (en) * | 2022-04-27 | 2022-09-02 | 东方电气集团东方汽轮机有限公司 | Turbine system with high load rate at full operation section of limited volume working medium and operation method |
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| CN111042881A (en) * | 2018-10-12 | 2020-04-21 | 上海明华电力技术工程有限公司 | Wide-load high-efficiency steam turbine generator unit with part of cylinders capable of being cut off |
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| CN114991894A (en) * | 2022-04-27 | 2022-09-02 | 东方电气集团东方汽轮机有限公司 | Turbine system with high load rate at full operation section of limited volume working medium and operation method |
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Effective date of registration: 20190514 Address after: 450001 No. 100 Wutong Street, Zhengzhou High-tech Development Zone, Henan Province Applicant after: TECHNOLOGY INFORMATION CENTER, SPIC HENAN ELECTRIC POWER CO., LTD. Address before: 450001 Zhengzhou Gas Power Plant, No. 100 Wutong Street, Zhengzhou High-tech Zone, Zhengzhou City, Henan Province Applicant before: Gao Wensong Applicant before: Yin Jinliang Applicant before: Wang Hongpeng |
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