CN108119190A - A kind of Optimization of Steam Turbine configuration system and method for split axle arrangement - Google Patents
A kind of Optimization of Steam Turbine configuration system and method for split axle arrangement Download PDFInfo
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- CN108119190A CN108119190A CN201611058378.2A CN201611058378A CN108119190A CN 108119190 A CN108119190 A CN 108119190A CN 201611058378 A CN201611058378 A CN 201611058378A CN 108119190 A CN108119190 A CN 108119190A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
Optimization of Steam Turbine the invention discloses a kind of split axle arrangement configures system and method, including at least the low pressure (LP) cylinder and generator for being arranged in first axle and fastening, the elastic low pressure (LP) cylinder and elastic generator being arranged in the second shafting, connect the valve on the cross over pipe of low pressure (LP) cylinder admission end and elastic low pressure (LP) cylinder admission end and the cross over pipe of the elastic low pressure (LP) cylinder admission end, by the optimization of elastic low pressure (LP) cylinder and elastic generator arrangements position, the horizontal span of steam turbine platform and the flexibility of workshop arrangement can be taken into account；According to the configuration quantity of unit load, back pressure and elastic low pressure (LP) cylinder, the number of elastic low pressure (LP) cylinder is put into operation or cut off by control, the obstruction back pressure that machine unit in winter high load capacity operating mode keeps relatively low can be achieved, and in summer performing low-load running of machine set operating mode, the leaving loss of energy relative reduction operation mesolow cylinder again, so as to fulfill full season, full load operating condition it is optimal, achieve the purpose that energy-saving.
Description
Technical field
Optimization of Steam Turbine the present invention relates to a kind of split axle arrangement configures system and method, belongs to field of thermal power.
Background technology
In recent years, China its people electricity consumption total amount increases rapidly, and the diversity of customer charge is more apparent, causes power grid peak
Paddy difference increased dramatically, and in order to ensure the safe power supply of power grid and power quality, accounting is higher in electric system total installation of generating capacity
Fossil-fired unit have to bear the responsibility the main force of peak regulation, and it has been normal that Large-scale fire-electricity unit, which is in compared with low load stage operation,
State.
For general steam turbine under design conditions, the through-flow of steam turbine can keep optimum efficiency, once and off-design operating mode,
Such as summer condition, since circulating water temperature is high, unit back pressuce is high, and the volume flow of low pressure (LP) cylinder steam discharge is remarkably decreased, and causes remaining
Speed loss rises.Especially again in underrun operating mode, then the volume flow of actual low pressure (LP) cylinder steam discharge is opposite designs unit
It is serious on the low side for operating mode, it is substantially increased relatively so as to cause the steam discharge leaving loss of low pressure (LP) cylinder, efficiency is remarkably decreased.Equally
, operating mode in winter, often during unit heavy-duty service, the leaving area of low pressure (LP) cylinder deficiency again causes back pressure obstructing problem, leads
The effective enthalpy drop deficiency of low pressure (LP) cylinder is caused, so as to influence the economy of unit.The design of existing large-scale thermal power steam turbine, often for
Annual average behavior is taken into account, design conditions are designed according to average back pressure, and the summer of off-design operating mode
Season and winter also would have to sacrifice certain economy, otherwise, if being designed by winter condition, can cause summer condition operation more
Add substantial deviation optimum condition, efficiency is lower；Similarly, if being designed by summer condition, low pressure (LP) cylinder to winter condition will be serious
Obstruction, seriously affects efficiently using for low back pressure.
At present, the low pressure (LP) cylinder of existing Large-scale machine set configuration is generally 1 ~ 3, and unit capacity is bigger or design back-pressure is lower,
The quantity of low pressure (LP) cylinder also can be more, this is because existing low pressure (LP) cylinder final blade length is limited by, to increase low pressure (LP) cylinder steam discharge face
Product will also use more low pressure (LP) cylinders, and for current turbine making factory, usual shafting is according to high, medium and low cylinder pressure
Order is arranged, by taking two low pressure (LP) cylinders as an example, if exemplary configurations as shown in Figure 1, the quantity of cylinder is more, still take uniaxial design,
Swollen difference between flow passage component sound is excessive then as a significant obstacle.
In view of above-mentioned existing Design of Steam Turbine to ensure that the optimal of design conditions is difficult to take into account other operating modes, such as summer
Season performing low-load running of machine set operating mode or winter unit heavy-duty service operating mode and using poor caused by conventional shaft system arrangement
The problems such as swollen excessive, therefore, those skilled in the art, are directed to developing a kind of system and method for Optimization of Steam Turbine configuration,
On the basis of the horizontal span of steam turbine platform and the flexibility of workshop arrangement can be taken into account, realization both can control between low pressure (LP) cylinder sound
Gap, and may be implemented in winter unit operating mode can keep relatively low obstruction back pressure at full capacity, and in summer performing low-load running of machine set
During operating mode, and higher operational efficiency can be kept, realize full season, full load operating condition it is optimal, reach energy-saving
Purpose.
The content of the invention
To achieve the above object, the Optimization of Steam Turbine the present invention provides a kind of split axle arrangement configures system, and feature exists
In, the system comprises the low pressure (LP) cylinder and generator for being arranged in first axle and fastening, the elastic low pressure (LP) cylinder being arranged in the second shafting
With elastic generator, the cross over pipe of the low pressure (LP) cylinder admission end and the elastic low pressure (LP) cylinder admission end and the bullet are connected
Valve on the cross over pipe of property low pressure (LP) cylinder admission end.
Further, which is characterized in that the system also includes the intermediate pressure cylinders for being arranged in first axle and fastening.
Further, which is characterized in that the system also includes the high pressure cylinder for being arranged in first axle and fastening, the high pressure cylinders
With medium pressure cylinder cylinder is divided to arrange.
Optionally, which is characterized in that further include high pressure cylinder, the high pressure cylinder is combined into high, middle pressing with medium pressure cylinder
Cylinder, and be arranged in first axle and fasten.
Further, which is characterized in that the system also includes at least one attachment device, multiple elastic low pressure (LP) cylinders
It is sequentially connected by attachment device described at least one.The second shafting outermost attachment device corresponds to elastic described in outermost
Low pressure (LP) cylinder.
Optionally, which is characterized in that affiliated attachment device is clutch system（The clutch system can be individual
Mode that safety coupling or individual clutch or safety coupling are combined with clutch etc.）.
Optionally, which is characterized in that affiliated attachment device is shaft coupling.
When the elastic low pressure (LP) cylinder is 1, then only need on the cross over pipe of the elastic low pressure (LP) cylinder admission end cloth
Put at least one valve.
When the elastic low pressure (LP) cylinder is multiple, then corresponding connection dress need to be also arranged between multiple elastic low pressure (LP) cylinders
It puts.Attachment device described in shafting outermost corresponds to elasticity described in outermost and sets low cylinder pressure, and most the inside attachment device is another
Then connection includes at least the elastic low pressure (LP) cylinder and the elastic generator at end.
It should be noted that whether cylinder, company are closed according to intermediate pressure cylinder quantity, low pressure (LP) cylinder quantity, elastic low pressure (LP) cylinder quantity, high pressure
Connection device form etc. have various arrangement combination, any different permutation and combination methods carried out based on above equipment, all
It should be in the protection domain being defined in the patent claims.
The invention also discloses a kind of application methods of system as described above, can determine according to unit real time execution load
The total steam discharge mass flow of specific low pressure (LP) cylinder, with reference to unit real time execution back pressure, can obtain low pressure (LP) cylinder total steam discharge volume flow in real time
Amount then according to the configuration quantity of unit elasticity low pressure (LP) cylinder, relatively all puts into elastic low pressure (LP) cylinder, the elastic low pressure (LP) cylinder of excision one
And the unit economy under the multiple elastic low pressure (LP) cylinders of excision, it is made choice according to unit economy optimum operating condition.
When low pressure (LP) cylinder, total steam discharge volume flow is less than or equal to " first threshold " in real time（First threshold is according to low pressure (LP) cylinder and bullet
Property the configuration quantity of the low pressure (LP) cylinder and total steam discharge volume flow of real-time low pressure (LP) cylinder, when cutting off outermost one elastic low pressure (LP) cylinder
When, unit heat consumption is optimal）When, then the valve for connecting outermost one of its center shafting elastic low pressure (LP) cylinder is closed, together
Attachment device described in the corresponding outermosts of Shi Liyong cuts off the corresponding outermost elasticity low pressure (LP) cylinder；
When low pressure (LP) cylinder, total steam discharge volume flow is less than or equal to " second threshold " in real time（Second threshold is less than first threshold, the second threshold
Value is according to low pressure (LP) cylinder and the elastic configuration quantity of low pressure (LP) cylinder and the total steam discharge volume flow of real-time low pressure (LP) cylinder, when excision two
During elastic low pressure (LP) cylinder, unit heat consumption is optimal）When, then close the valve for connecting another elastic low pressure (LP) cylinder；
With the decline of low pressure (LP) cylinder total steam discharge volume flow in real time, according to economic optimum, close that connect the elasticity low one by one
The valve of cylinder pressure, while the corresponding elastic low pressure (LP) cylinder is cut off using the corresponding attachment device one by one, until cutting
Except whole elastic low pressure (LP) cylinders.
Conversely, then progressively since most inside the connection most inside elastic low pressure (LP) cylinder the valve, while using pair
The corresponding elastic low pressure (LP) cylinder of attachment device connection answered, until the elastic low pressure (LP) cylinder that connection is whole.
It should be noted that different unit operation loads and back pressure correspond to the total steam discharge volume flow of different low pressure (LP) cylinders,
Under the different total steam discharge volume flow operating modes of low pressure (LP) cylinder, elastic low pressure (LP) cylinder excision quantity directly affects the heat consumption of unit.It is above-mentioned
Different threshold values and elastic low pressure (LP) cylinder excision quantity for the total steam discharge volume flow setting of low pressure (LP) cylinder, are for determining not
Under the same total steam discharge volume flow operating mode of low pressure (LP) cylinder, it is ensured that excision or the rational elastic low pressure (LP) cylinder of input, to reduce low pressure (LP) cylinder
Leaving loss realizes that unit economy is optimal.
And excision function can be achieved either using clutch system or shaft coupling in attachment device, is clutch system
The excision of unit on-line operation can be achieved in system, and shaft coupling need to then be cut off in the compressor emergency shutdown stage.
Steam turbine Optimizing Configuration System of the present invention and method can obtain following technique effect：
1st, low pressure (LP) cylinder and elastic low pressure (LP) cylinder are contemplated that enough leaving areas in design, meet relatively low during winter high load capacity operating mode
The demand of exhaust steam pressure, and as unit circulating water temperature is stepped up and the reduction of load, it can progressively cut off certain amount
Elastic low pressure (LP) cylinder, opposite can reduce low pressure (LP) cylinder steam discharge leaving loss, realize that unit economy is optimal；
2nd, since wherein elastic low pressure (LP) cylinder is arranged in from remaining low pressure (LP) cylinder in different shaftings, the list arranged using split axle
Root system is relatively short, in contrast, the difference of the relative expansion between cylinder and rotor（Referred to as swollen difference）It is smaller, i.e. low pressure (LP) cylinder sound
Between gap can be made smaller, therefore higher steam end efficiency can be obtained, while also can be cleverer in the arrangement of steam turbine workshop
It is living.
Even if the 3rd, when elastic low pressure (LP) cylinder puts into operation, since the steam discharge of intermediate pressure cylinder enters bullet by the way that cross over pipe is in parallel respectively
Property low pressure (LP) cylinder and remaining low pressure (LP) cylinder in terms of comprehensive, can make cross over pipe by reasonably arranging to control the overall length of cross over pipe
Total drag losses accomplish it is lower, unit economy also can therefore it is more excellent.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to attached drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is a certain system schematic for not using the present invention program.
Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15 are these
The system schematic of the specific embodiment of invention；
It is marked in figure：1-- high pressure cylinders；2-- intermediate pressure cylinders；3-- low pressure (LP) cylinders；4th, 6-- elasticity low pressure (LP) cylinder；5-- generators；7-- elasticity
Generator；8th, 11-- valves；9-- mesolow cross over pipes；10-- high, middle pressing cylinder；12-- attachment devices.
Specific embodiment
Embodiment 1
As shown in Fig. 2, the first of the Optimization of Steam Turbine configuration system and method that a kind of split axle that it is the present invention is arranged is specific real
Apply example.It mainly includes being connected to a high pressure cylinder, an intermediate pressure cylinder, a low pressure (LP) cylinder and a hair that first axle is fastened in turn
Motor, the elastic low pressure (LP) cylinder and an elastic generator, valve and mesolow cross over pipe being connected in turn in the second shafting.
The control mode of elastic low pressure (LP) cylinder switching：
When low pressure (LP) cylinder, total steam discharge volume flow is less than or equal to " first threshold " in real time（First threshold is low according to low pressure (LP) cylinder and elasticity
The configuration quantity of cylinder pressure and the total steam discharge volume flow of real-time low pressure (LP) cylinder, when the elastic low pressure (LP) cylinder 4 of excision, unit heat consumption is most
It is good）When, then the valve 8 of the wherein described elastic low pressure (LP) cylinder 4 of connection is closed, due to only there are one elastic low pressure (LP) cylinder 4, no
Attachment device is needed, directly closes the valve 8, then can be achieved to separate the second shafting, the elasticity in the second shafting is low at this time
Cylinder pressure 4 and the elastic generator 7 are out of service；
Conversely, then opening the valve 8 of the elastic low pressure (LP) cylinder 4, then steam can enter the elastic low pressure of the second shafting
Cylinder 4, the second shafting bring into operation.
Wherein, the rated output power of elastic low pressure (LP) cylinder may be designed as the 50% ~ 100% of the rated output power of low pressure (LP) cylinder,
Exemplified by 50%, 1000MW unit operations are significantly reduced in 500MW operating modes using the leaving loss of low pressure (LP) cylinder after the invention, interior
Efficiency opposite can improve 4% or so, meanwhile, unit load is lower, and circulating water temperature is higher, implements the phase of low pressure (LP) cylinder after the present invention
It is also more to benefit.
Embodiment 2
Fig. 3 is the second specific embodiment of the present invention.It mainly includes being connected to high pressure cylinder, one that first axle is fastened in turn
A intermediate pressure cylinder, two low pressure (LP) cylinders and a generator, an elastic low pressure (LP) cylinder and the bullet being connected in turn in the second shafting
Property generator, valve and mesolow cross over pipe.
Compared to embodiment one, a low pressure (LP) cylinder is added, mating can be suitable for the lower steam discharge of the lower needs of environment temperature
The unit of pressure, the switching control method of elastic low pressure (LP) cylinder is all identical with embodiment one, and details are not described herein again.
Embodiment 3
Fig. 4 is the 3rd specific embodiment of the present invention.It mainly includes being connected to two intermediate pressure cylinders, two that first axle is fastened in turn
A low pressure (LP) cylinder and a generator, the elastic low pressure (LP) cylinder and an elastic generator being connected in turn in the second shafting, valve
Door and mesolow cross over pipe.With respect to embodiment one and embodiment two, this programme main distinction is to be not provided with high pressure cylinder, therefore
Can the mating low pressure shafting suitable for double reheat split axle unit, the switching control method of elastic low pressure (LP) cylinder all with embodiment one
Identical, details are not described herein again.
Embodiment 4
Fig. 5 is the 4th specific embodiment of the present invention.It mainly includes being connected to two intermediate pressure cylinders, three that first axle is fastened in turn
A low pressure (LP) cylinder and a generator, the elastic low pressure (LP) cylinder and an elastic generator being connected in turn in the second shafting, valve
Door and mesolow cross over pipe.Compared to embodiment three, a low pressure (LP) cylinder is added, for embodiment three, the program can
Suitable for the lower unit for needing lower exhaust steam pressure of environment temperature, the switching control method of elastic low pressure (LP) cylinder is all and embodiment
One is identical, and details are not described herein again.
Embodiment 5
Fig. 6 is the 5th specific embodiment of the present invention.It mainly includes being connected to the senior middle school pressing that first axle is fastened in turn
Cylinder, two low pressure (LP) cylinders and a generator, an elastic low pressure (LP) cylinder being connected in turn in the second shafting and an elasticity power generation
Machine, valve and mesolow cross over pipe.The switching control method of its elastic low pressure (LP) cylinder is all identical with embodiment two, thus herein no longer
It repeats.The main distinction of this programme and embodiment two is that the high intermediate pressure cylinder of this programme closes cylinder, thus mating applicable unit
Capacity parameter is different.
Embodiment 6
Fig. 7 is the 6th specific embodiment of the present invention.It mainly includes being connected to the senior middle school pressing that first axle is fastened in turn
Cylinder, a low pressure (LP) cylinder and a generator, an elastic low pressure (LP) cylinder being connected in turn in the second shafting and an elasticity power generation
Machine, valve and mesolow cross over pipe.Compared to embodiment five, reduce a low pressure (LP) cylinder, thus in contrast, suitable for environment
The higher unit of exhaust steam pressure needed for temperature is relatively high, the switching control method of elastic low pressure (LP) cylinder all with one phase of embodiment
Together, details are not described herein again.
Embodiment 7
Fig. 8 is the 7th specific embodiment of the present invention.It mainly includes being connected to high pressure cylinder, one that first axle is fastened in turn
A intermediate pressure cylinder, a low pressure (LP) cylinder and a generator, two elastic low pressure (LP) cylinders and the bullet being connected in turn in the second shafting
Property generator, attachment device, valve and mesolow cross over pipe, attachment device is arranged between two elastic low pressure (LP) cylinders.
The control mode of elastic low pressure (LP) cylinder switching：
1st, when attachment device selects clutch system, the switching of elastic low pressure (LP) cylinder more flexibly, it can be achieved that online switching, but its
Cost is relatively high, and the reliability of clutch system in itself can influence the security of whole system.Its elastic low pressure (LP) cylinder is thrown
The control mode cut：
When low pressure (LP) cylinder, total steam discharge volume flow is less than or equal to " first threshold " in real time（First threshold is low according to low pressure (LP) cylinder and elasticity
The configuration quantity of cylinder pressure and the total steam discharge volume flow of real-time low pressure (LP) cylinder, when cutting off outermost one elastic low pressure (LP) cylinder 4,
Unit heat consumption is optimal）When, then the valve 8 for connecting outermost one of its center shafting elastic low pressure (LP) cylinder 4 is closed, simultaneously
The corresponding outermost elasticity low pressure (LP) cylinder 4 is cut off using attachment device 12 described in corresponding outermost；
When low pressure (LP) cylinder, total steam discharge volume flow is less than or equal to " second threshold " in real time（Second threshold is less than first threshold, the second threshold
Value is according to low pressure (LP) cylinder and the elastic configuration quantity of low pressure (LP) cylinder and the total steam discharge volume flow of real-time low pressure (LP) cylinder, when excision two
During elastic low pressure (LP) cylinder, unit heat consumption is optimal）When, then the valve 11 for connecting another elastic low pressure (LP) cylinder 6 is closed, at this time
Elastic generator 7 is also out of service；
Conversely, then progressively since most inside the connection most inside elastic low pressure (LP) cylinder 6 the valve 11, then elastic low pressure (LP) cylinder
The elastic generator 7 of 6 drivings is run.When elastic low pressure (LP) cylinder 4 is needed to put into, then valve 8 is further opened, and utilizes the connection
Device 12 connects the corresponding elastic low pressure (LP) cylinder 4, at this point, elastic low pressure (LP) cylinder 4 is transported jointly into steam with elastic low pressure (LP) cylinder 6
Row driving 7 output power of elastic generator.
Meanwhile compared to embodiment one, an elastic low pressure (LP) cylinder is which increased, therefore the load model of its switching elasticity low pressure (LP) cylinder
It encloses wider, opposite promoted of low pressure (LP) cylinder efficiency is become apparent, and the rated output power design load of its single elastic low pressure (LP) cylinder
Compared to decreasing in embodiment one.
2nd, when attachment device selects shaft coupling, cost is relatively low, safe, but the switching of elastic low pressure (LP) cylinder 4 without
Method is realized in unit operation, can only be operated after unit outage, underaction.Its control mode and elastic low pressure (LP) cylinder switching side
Formula：
After unit outage, average back pressure and average load when prediction unit next stage is run, so as to which available one is average
Total low pressure (LP) cylinder steam discharge volume flow, when its be less than or equal to " first threshold "（First threshold is according to low pressure (LP) cylinder and elastic low pressure
The configuration quantity of cylinder and the total steam discharge volume flow of real-time low pressure (LP) cylinder, when cutting off outermost one elastic low pressure (LP) cylinder 4, machine
Group heat consumption is optimal）When, then the valve 8 of outermost one of its center shafting of connection elastic low pressure (LP) cylinder 4 is closed, simultaneously will
Attachment device described in outermost（Shaft coupling）12 disconnect, then cut off the corresponding outermost elasticity low pressure (LP) cylinder 4 completely；
And elastic low pressure (LP) cylinder 6 then can determine that low pressure (LP) cylinder is always arranged in real time according to real-time averagely back pressure and real-time load in operation
Steam space flow, when it is less than or equal to " second threshold "（Second threshold is less than first threshold, second threshold be according to low pressure (LP) cylinder and
The configuration quantity of elastic low pressure (LP) cylinder and the total steam discharge volume flow of real-time low pressure (LP) cylinder, when cutting off two elastic low pressure (LP) cylinders, machine
Group heat consumption is optimal）When, then the valve 11 of the elastic low pressure (LP) cylinder 6 is closed, elastic generator 7 is complete at this time stops output work
Rate；
Conversely, if the total steam discharge volume flow of low pressure (LP) cylinder during prediction unit next stage operation is put into higher than " first threshold "
All elastic low pressure (LP) cylinder operation, i.e., by attachment device（Shaft coupling）In 12 connections, and valve 8 is opened, and open valve 11, then may be used
Realize the operation of elastic low pressure (LP) cylinder 4, elastic low pressure (LP) cylinder 6 and elastic generator 7.
Compared to embodiment one, an elastic low pressure (LP) cylinder is which increased, therefore the load range of its switching elasticity low pressure (LP) cylinder is more
Width becomes apparent opposite promoted of low pressure (LP) cylinder efficiency, and the rated output power design load of its single elastic low pressure (LP) cylinder is compared
It decreases in embodiment one.
Embodiment 8
Fig. 9 is the 8th specific embodiment of the present invention.It mainly includes being connected to high pressure cylinder, one that first axle is fastened in turn
A intermediate pressure cylinder, two low pressure (LP) cylinders and a generator, two elastic low pressure (LP) cylinders and the bullet being connected in turn in the second shafting
Property generator, attachment device, valve and mesolow cross over pipe, attachment device is arranged between two elastic low pressure (LP) cylinders.Compared to reality
Mode two is applied, which increases an elastic low pressure (LP) cylinder, therefore the load range of its switching elasticity low pressure (LP) cylinder is wider, to low pressure (LP) cylinder efficiency
Opposite promoted become apparent, and the rated output power design load of its single elastic low pressure (LP) cylinder compared in embodiment two
It reduces, the switching control method of the selection of attachment device and elastic low pressure (LP) cylinder is all identical with embodiment seven, and details are not described herein again.
Embodiment 9
Figure 10 is the 9th specific embodiment of the present invention.It mainly include being connected in turn two intermediate pressure cylinders that first axle fastens,
Two low pressure (LP) cylinders and a generator, the two elastic low pressure (LP) cylinders and an elastic generator being connected in turn in the second shafting,
Attachment device, valve and mesolow cross over pipe, attachment device are arranged between two elastic low pressure (LP) cylinders.Compared to embodiment three,
An elastic low pressure (LP) cylinder is which increased, therefore the load range of its switching elasticity low pressure (LP) cylinder is wider, and the opposite of low pressure (LP) cylinder efficiency is carried
It rises and becomes apparent, and the rated output power design load of its single elastic low pressure (LP) cylinder is in embodiment three compared to can decrease,
The switching control method of the selection of its attachment device and elastic low pressure (LP) cylinder is all identical with embodiment seven, and details are not described herein again.
Embodiment 10
Figure 11 is the tenth specific embodiment of the present invention.It mainly include being connected in turn two intermediate pressure cylinders that first axle fastens,
Three low pressure (LP) cylinders and a generator, the two elastic low pressure (LP) cylinders and an elastic generator being connected in turn in the second shafting,
Attachment device, valve and mesolow cross over pipe, attachment device are arranged between two elastic low pressure (LP) cylinders.Compared to embodiment four,
An elastic low pressure (LP) cylinder is which increased, therefore the load range of its switching elasticity low pressure (LP) cylinder is wider, and the opposite of low pressure (LP) cylinder efficiency is carried
It rises and becomes apparent, and the rated output power design load of its single elastic low pressure (LP) cylinder is compared and decreased in embodiment four,
The switching control method of the selection of attachment device and elastic low pressure (LP) cylinder is all identical with embodiment seven, and details are not described herein again.
Embodiment 11
Figure 12 is the 11st specific embodiment of the present invention.It mainly includes being connected to the high pressure that first axle is fastened in turn
Cylinder, two low pressure (LP) cylinders and a generator are closed, the elastic low pressure (LP) cylinder of two be connected in turn in the second shafting and an elasticity hair
Motor, attachment device, valve and mesolow cross over pipe, attachment device are arranged between two elastic low pressure (LP) cylinders.Compared to embodiment party
Formula five which increases an elastic low pressure (LP) cylinder, therefore the load range of its switching elasticity low pressure (LP) cylinder is wider, to the phase of low pressure (LP) cylinder efficiency
Promotion is become apparent, and the rated output power design load of its single elastic low pressure (LP) cylinder is compared and dropped in embodiment five
Low, the switching control method of the selection of attachment device and elastic low pressure (LP) cylinder is all identical with embodiment seven, and details are not described herein again.
Embodiment 12
Figure 13 is the 12nd specific embodiment of the present invention.It mainly includes being connected to the high pressure that first axle is fastened in turn
Cylinder, a low pressure (LP) cylinder and a generator are closed, the elastic low pressure (LP) cylinder of two be connected in turn in the second shafting and an elasticity hair
Motor, attachment device, valve and mesolow cross over pipe, attachment device are arranged between two elastic low pressure (LP) cylinders.Compared to embodiment party
Formula six which increases an elastic low pressure (LP) cylinder, therefore the load range of its switching elasticity low pressure (LP) cylinder is wider, to the phase of low pressure (LP) cylinder efficiency
Promotion is become apparent, and the rated output power design load of its single elastic low pressure (LP) cylinder is compared and dropped in embodiment six
Low, the switching control method of the selection of attachment device and elastic low pressure (LP) cylinder is all identical with embodiment seven, and details are not described herein again.
Embodiment 13
Figure 14 is the 13rd specific embodiment of the present invention.It mainly includes being connected to two low pressure (LP) cylinders that first axle is fastened in turn
With a generator, the two 1 elastic low pressure (LP) cylinders and an elastic generator, valve and connection being connected in turn in the second shafting
Siphunculus.The arrangement is suitable for reheating embrittlement, i.e. first axle twice and fastens only low pressure (LP) cylinder and generator, and elasticity is low in the embodiment
Cylinder pressure control mode and embodiment one are identical, and details are not described herein again.
Embodiment 14
Figure 15 is the 14th specific embodiment of the present invention.It mainly includes being connected to two low pressure (LP) cylinders that first axle is fastened in turn
With a generator, the two elastic low pressure (LP) cylinders and an elastic generator being connected in turn in the second shafting, attachment device, valve
Door and cross over pipe, attachment device are arranged between two elastic low pressure (LP) cylinders.The embodiment attachment device mode, elastic low pressure (LP) cylinder
Operation mode is caused with seven phase of embodiment.Details are not described herein again.
The preferred embodiment of the present invention described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made work, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be in the protection domain being defined in the patent claims.
Claims (9)
1. the Optimization of Steam Turbine configuration system of a kind of split axle arrangement, which is characterized in that the system comprises be arranged in the first shafting
On low pressure (LP) cylinder and generator, be arranged in elastic low pressure (LP) cylinder in the second shafting and elastic generator, connect the low pressure (LP) cylinder into
Valve on the cross over pipe of the cross over pipe and the elastic low pressure (LP) cylinder admission end of vapour end and the elastic low pressure (LP) cylinder admission end
Door.
2. the system as claimed in claim 1, which is characterized in that further include intermediate pressure cylinder, medium pressure cylinder is arranged in the first shafting
On.
3. system as claimed in claim 2, which is characterized in that further include high pressure cylinder, the high pressure cylinder and medium pressure cylinder point
Cylinder is arranged in first axle and fastens.
4. system as claimed in claim 2, which is characterized in that further include high pressure cylinder, the high pressure cylinder and medium pressure cylinder group
It synthesizes high, middle pressing cylinder and is arranged in first axle and fasten.
5. the system as described in claim 1-4 is any, which is characterized in that further include attachment device in second shafting, institute
Attachment device is stated to be arranged between multiple elastic low pressure (LP) cylinders.
6. system as claimed in claim 5, which is characterized in that the system also includes attachment device, the attachment device is
Clutch system or shaft coupling.
7. a kind of application method of system as claimed in claim 5, including step a:It is determined according to unit real time execution load
The total steam discharge mass flow of specific low pressure (LP) cylinder, then according to unit real time execution back pressure, determines low pressure (LP) cylinder total steam discharge volume in real time
Flow.
8. a kind of application method of system as claimed in claim 7, including step b:When low pressure (LP) cylinder total steam discharge volume flow in real time
When amount is less than or equal to " first threshold ", then the valve of outermost one of its center shafting of connection elastic low pressure (LP) cylinder is closed
Door, while cut off the corresponding outermost elasticity low pressure (LP) cylinder using attachment device described in corresponding outermost.
9. a kind of application method of system as claimed in claim 8, including step c:When low pressure (LP) cylinder total steam discharge volume flow in real time
When amount is less than or equal to " second threshold ", then the valve of another elastic low pressure (LP) cylinder of connection is closed；As low pressure (LP) cylinder is real
When total steam discharge volume flow decline, according to economic optimum, close the valve of the connection elastic low pressure (LP) cylinder one by one, together
When one by one using the corresponding elastic low pressure (LP) cylinder of corresponding attachment device excision, until the elastic low pressure that excision is whole
Cylinder conversely, then progressively connecting the valve of the most inside elastic low pressure (LP) cylinder since most inside, while utilizes corresponding institute
The corresponding elastic low pressure (LP) cylinder of attachment device connection is stated, until the elastic low pressure (LP) cylinder that connection is whole.
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| CN201611058378.2A CN108119190A (en) | 2016-11-27 | 2016-11-27 | A kind of Optimization of Steam Turbine configuration system and method for split axle arrangement |
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| CN201611058378.2A CN108119190A (en) | 2016-11-27 | 2016-11-27 | A kind of Optimization of Steam Turbine configuration system and method for split axle arrangement |
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| CN108119190A true CN108119190A (en) | 2018-06-05 |
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| CN201611058378.2A Pending CN108119190A (en) | 2016-11-27 | 2016-11-27 | A kind of Optimization of Steam Turbine configuration system and method for split axle arrangement |
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| CN111911244A (en) * | 2020-06-29 | 2020-11-10 | 东方电气集团东方汽轮机有限公司 | Multi-cylinder air turbine unit |
| CN113864848A (en) * | 2021-06-16 | 2021-12-31 | 暨南大学 | Full-working-condition efficient heating system and method for cogeneration unit |
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Application publication date: 20180605 |