CN103397919B - The pure condensate formula small turbine of industrial frequency generator speed governing drives feed-water pump and method - Google Patents
The pure condensate formula small turbine of industrial frequency generator speed governing drives feed-water pump and method Download PDFInfo
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- CN103397919B CN103397919B CN201310352602.9A CN201310352602A CN103397919B CN 103397919 B CN103397919 B CN 103397919B CN 201310352602 A CN201310352602 A CN 201310352602A CN 103397919 B CN103397919 B CN 103397919B
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Abstract
The pure condensate formula small turbine that the invention discloses a kind of industrial frequency generator speed governing drives feed-water pump, this system comprises pure condensate formula small turbine, feed water pump group, industrial frequency generator and timing gear roller box, wherein, pure condensate formula small turbine, feed water pump group, industrial frequency generator are coaxially connected with timing gear roller box; Timing gear roller box is configured, by driving described industrial frequency generator to rotate after the speed governing of timing gear roller box between pure condensate formula small turbine and industrial frequency generator; By controlling the output of industrial frequency generator, thus control the rotating speed of pure condensate formula small turbine, thus control the rotating speed of feed water pump group.System of the present invention considerably reduces the loss of small turbine admission throttling, improves operational efficiency, and has given full play to the acting ability of small turbine, increases and runs income.The invention also discloses a kind of steam electric power unit and regulate the method for speed of feedwater.
Description
Technical field
The present invention relates to steam-turbine power plant, the small turbine be specifically related in steam-turbine power plant drives feed-water pump.
Background technique
In Large Copacity high-parameter steam turbine power station, usually configure automobile assembly welding Iine.Drive feed water pump with small turbine, feedwater is improved pressure, supply subsequent technique system.This small turbine can adopt pure condensate formula.According to unit load change, need the respective change of exerting oneself of feed water pump, usually met by the respective change of speed of feedwater, and speed of feedwater is determined by the rotating speed of the small turbine coaxially connected.
Completely send out to meet long-term summer unit, the nominal output of small turbine is usually large than the nominal output of feed water pump, and the nominal output of feed water pump is larger than exerting oneself required for unit rated load, therefore the nominal output of small turbine has larger allowance, is generally more than 20%.
Fig. 1-3 is that the pure condensate formula small turbine of modulating valve throttle grverning in prior art drives feed-water pump schematic flow sheet.In prior art, pure condensate formula small turbine drive feed-water pump be generally provided with small turbine 1, admission modulating valve 5, feed water pump 6 and vapour condenser 4, in part system (as shown in Figures 2 and 3) be also provided with front-mounted pump 10 and constant-speed ratio gear-box 11.Small turbine, by controlling the aperture of admission modulating valve 5, can control the rotating speed of small turbine.
This configuration causes small turbine admission modulating valve aperture most working time less, causes restriction loss.In addition, because generator set load is being elevated with electrical network demand every day, when low-load, the tune valve opening of small turbine can be less, and restriction loss is larger, in general, affects small turbine operational efficiency more than 5%.Except above-mentioned restriction loss, because the acting ability of small turbine can not give full play to, there is relative economic loss.The condensed steam type small turbine configured at existing steam electric power unit drives in feed-water pump, and annual most of working time, particularly during unit low-load, small turbine is exerted oneself and all underused.Such as in order to meet the needs that unit is completely sent out all the year round summer, the small turbine 1 1000MW ultra supercritical unit being configured usually to 2 50% capacity drives feed water pump group system.The declared working condition power demand of feed water pump is about 17000kW, and supporting small turbine maximum output is about 22000kW, and every platform unit small turbine exerts oneself allowance for (22000-17000) x2=10000kW.Therefore the small turbine of every platform unit does not on average utilize power to be more than 10000kW, and this allowance configuration exists very large problem.
Summary of the invention
The pure condensate formula small turbine of the industrial frequency generator speed governing that the utilization ratio that the object of the present invention is to provide that a kind of restriction loss is little, small turbine is exerted oneself is high drives feed-water pump.
The pure condensate formula small turbine of industrial frequency generator speed governing of the present invention drives feed-water pump to be in Large Copacity high-parameter steam turbine power station, generator set configure for will after the pressure of feedwater improves, one of indispensable system of supply subsequent technique system institute.
System of the present invention comprises: pure condensate formula small turbine, feed water pump (or feed water pump group), industrial frequency generator and timing gear roller box, wherein, pure condensate formula small turbine is provided with admission pipeline, blow-off line, modulating valve and vapour condenser, and described vapour condenser can public configuration or separate configurations, the steam of admission pipeline carrys out the high pressure steam of self generating sets thermodynamic system, blow-off line is connected with vapour condenser, and modulating valve is arranged on admission pipeline, for regulating the logical vapour amount of high pressure steam.
Feed water pump group is coaxially connected with pure condensate formula small turbine, and namely feed water pump is connected on the rotatingshaft of pure condensate formula small turbine.Feed water pump of the present invention both can be feed water pump equipment, also can be front-mounted pump and feed water pump two equipment.In another preference, constant-speed ratio gear-box can be matched to front-mounted pump.
Timing gear roller box is used for change rotating speed being converted to fixed rotating speed, the optional pattern with clutch function of timing gear roller box.The output terminal of timing gear roller box can be connected to drive industrial frequency generator to rotate with the input end of industrial frequency generator.
Alternatively, industrial frequency generator can be connected on the same rotatingshaft of pure condensate formula small turbine together with feed water pump group.Industrial frequency generator can be connected with the axle head of pure condensate formula small turbine both sides respectively with feed water pump group, also can be connected to the same axle head of pure condensate formula small turbine.
When industrial frequency generator and feed water pump group lay respectively at the axle head of pure condensate formula small turbine both sides, timing gear roller box between pure condensate formula small turbine and industrial frequency generator, and is coaxially connected with industrial frequency generator with pure condensate formula small turbine.Namely the input end of timing gear roller box is connected with the axle head of the side of pure condensate formula small turbine, and the input end of feed water pump group is connected with the axle head of the opposite side of pure condensate formula small turbine.
When industrial frequency generator and feed water pump group are positioned at the same axle head of pure condensate formula small turbine, alternatively, timing gear roller box is arranged between feed water pump and industrial frequency generator, and is coaxially connected with industrial frequency generator with feed water pump group.Namely the input end of timing gear roller box is connected with the output terminal of feed water pump group, and the input end of feed water pump group is connected with the axle head of pure condensate formula small turbine.
In the system of the present invention, the rotating speed that feed water pump group changes can be regulated by timing gear roller box, be converted into the power frequency rotating speed of 50Hz or 60Hz, thus drive industrial frequency generator to rotate, the Partial Power of pure condensate formula small turbine is exported as power frequency electric.
The pure condensate formula small turbine of present system, feed water pump group, industrial frequency generator with timing gear roller box for be coaxially connected.When feed water pump group be made up of front-mounted pump and feed water pump time, when the rotating speed difference of front-mounted pump and feed water pump is larger, rotatingshaft between front-mounted pump and feed water pump can arrange constant-speed ratio gear-box, to regulate both rotating speed ratio, meet the needs of generator set load variations.
Because pure condensate formula small turbine of the present invention drives feed water pump group system to regulate the rotating speed of feed water pump group by controlling exerting oneself of industrial frequency generator, to meet the needs of generator set load variations, therefore, within the whole year most working time, the aperture of the modulating valve of pure condensate formula small turbine can keep large aperture (70%-100%) for a long time, even if when unit load step-down, exerting oneself of pure condensate formula small turbine can be made full use of, generated electricity by industrial frequency generator, not only significantly reduce restriction loss, and improve the operational efficiency of pure condensate formula small turbine, improve the sale of electricity income of power plant.
The present invention also comprises the steam electric power unit that the pure condensate formula small turbine being configured with industrial frequency generator speed governing drives feed water pump group system.
According to an aspect of the present invention, the pure condensate formula small turbine providing a kind of industrial frequency generator speed governing drives feed-water pump, and described system comprises pure condensate formula small turbine, feed water pump, industrial frequency generator and timing gear roller box, wherein,
Described pure condensate formula small turbine, described feed water pump, described industrial frequency generator are coaxially connected with described timing gear roller box;
Described timing gear roller box is configured between described pure condensate formula small turbine and described industrial frequency generator, thus described small turbine rotate through the speed governing of described timing gear roller box after drive described industrial frequency generator to rotate; And
By controlling the output of described industrial frequency generator, thus control the rotating speed of described pure condensate formula small turbine, and then control the rotating speed of described feed water pump.
Preferably, pure condensate formula small turbine is provided with admission pipeline, and described admission pipeline is provided with modulating valve.
Preferably, feed water pump can be connected with the axle head of pure condensate formula small turbine both sides respectively with industrial frequency generator.
Preferably, industrial frequency generator can be connected via the axle head of timing gear roller box with the side of pure condensate formula small turbine, and the input end of feed water pump can be connected with the axle head of the opposite side of pure condensate formula small turbine.
Preferably, feed water pump, industrial frequency generator and timing gear roller box can be connected to the same axle head of pure condensate formula small turbine.
Preferably, industrial frequency generator can be connected with feedwater delivery side of pump via timing gear roller box, and the input end of feed water pump is connected with the axle head of pure condensate formula small turbine.
Preferably, system also can comprise front-mounted pump, and industrial frequency generator is between feed water pump with front-mounted pump and be connected with feed water pump via timing gear roller box, or front-mounted pump is between industrial frequency generator and feed water pump.
Preferably, system also can comprise constant-speed ratio gear-box, and constant-speed ratio gear-box is connected with front-mounted pump, for regulating the rotating speed of front-mounted pump.
According to a further aspect in the invention, additionally provide a kind of steam electric power unit, wherein, the pure condensate formula small turbine that generator set is configured with above-mentioned industrial frequency generator speed governing drives feed-water pump.
According to another aspect of the invention, additionally provide a kind of method regulating pure condensate formula small turbine to drive the rotating speed of feed water pump in feed-water pump, system comprises pure condensate formula small turbine and feed water pump, wherein, set up industrial frequency generator in systems in which, by controlling the output of industrial frequency generator, thus control the rotating speed of pure condensate formula small turbine, and then control the rotating speed of feed water pump.
System of the present invention makes full use of the acting ability of small turbine, is generated electricity by industrial frequency generator, and every platform 1000MW unit can externally be powered 7,500 ten thousand kilowatts every year, direct economy income more than 1,500 ten thousand yuan.
Accompanying drawing explanation
Fig. 1-3 is three canonical system schematic flow sheets of the pure condensate formula small turbine driving feed-water pump of modulating valve throttle grverning in prior art.
Fig. 4 is the system flow schematic diagram driving feed-water pump according to the pure condensate formula small turbine of industrial frequency generator speed governing in the first embodiment of the present invention.
Fig. 5 is the system flow schematic diagram of the pure condensate formula small turbine driving feed-water pump of middle according to a second embodiment of the present invention industrial frequency generator speed governing.
Fig. 6 is the system flow schematic diagram of the pure condensate formula small turbine driving feed-water pump of according to the third embodiment of the invention middle industrial frequency generator speed governing.
Fig. 7 is the system flow schematic diagram of the pure condensate formula small turbine driving feed-water pump of middle according to a fourth embodiment of the invention industrial frequency generator speed governing.
Fig. 8 is the system flow schematic diagram of the pure condensate formula small turbine driving feed-water pump of middle according to a fifth embodiment of the invention industrial frequency generator speed governing.
Embodiment
Inventor is through deeply studying widely, find by being coaxially connected industrial frequency generator with pure condensate formula small turbine, not only by controlling the mode of exerting oneself of industrial frequency generator, part or all of replacement modulating valve mode, to control the rotating speed of small turbine, thus control the rotating speed of feed water pump group, and industrial frequency generator can be utilized to generate electricity, thus take full advantage of exerting oneself of small turbine.The modulating valve of small turbine of the present invention can keep high aperture for a long time, and aperture is 70% ~ 100%, greatly reduces the loss that throttling causes, and makes full use of exerting oneself of small turbine, improves the operational efficiency of small turbine.Complete the present invention on this basis.
Terminological interpretation:
Industrial frequency generator: normally running the electricity sent is the generator of fixed frequency, common is 50Hz or 60Hz.
Pure condensate formula steam turbine: steam discharge is called pure condensate formula steam turbine to the steam turbine of subatmospheric vapour condenser.
Coaxial connected: to refer to that each equipment connection is on same rotation axis system.
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, the usually conveniently conditioned disjunction condition of advising according to manufacturer.
Unless otherwise defined, all specialties used in literary composition and scientific words and one skilled in the art the meaning be familiar with identical.In addition, any method similar or impartial to described content and material all can be applicable in the inventive method.The use that better implementation methods described in literary composition and material only present a demonstration.
As shown in Figure 4, the condensed steam type small turbine of the industrial frequency generator speed governing of the present embodiment drives that feed-water pump comprises small turbine 1, admission pipeline 2, blow-off line 3, vapour condenser 4, modulating valve 5, feed water pump (or other pump) 6, timing gear roller box 7, industrial frequency generator 8, transformer 9 form.Wherein the steam inlet of small turbine 1 is connected with admission pipeline 2, the steam of admission pipeline carrys out the high pressure steam of self generating sets thermodynamic system, and small turbine 1 is connected by blow-off line 3 with vapour condenser 4, wherein, vapour condenser 4 can public host vapour condenser, also configurable independently vapour condenser.Install modulating valve 5 at admission pipeline place, for regulating the logical vapour amount of high pressure steam, in the present embodiment, the high aperture of long-term maintenance of modulating valve, aperture is 70% ~ 100%, needs to reduce aperture or closedown when equipment failure or maintenance.
Feed water pump 6 is positioned at the axle head of small turbine 1 side, and feed water pump 6 is coaxially connected with small turbine 1, and the input end of feed water pump 6 is connected with the axle head of this side of small turbine 1.
Industrial frequency generator 8 is positioned at the axle head of small turbine 1 opposite side, and between small turbine 1 and industrial frequency generator 8 auxiliary tone speed gear-box 7, this timing gear roller box 7 is coaxially connected with small turbine 1, and this timing gear roller box 7 is also coaxially connected with industrial frequency generator 8.The input end of timing gear roller box 7 is connected with the axle head of this side of small turbine 1, and the output terminal of timing gear roller box 7 is connected to drive industrial frequency generator 8 to rotate with the input end of industrial frequency generator 8.
If when during operation, industrial frequency generator 8 output voltage is different from voltage between electrical network, transformer 9 can be set between industrial frequency generator 8 and electrical network, can, by industrial frequency generator 6 electricity transformation to the voltage mated with electrical network, be realized industrial frequency generator 8 electricity to supply in factory or factory's external power grid by transformer 9.
The System Working Principle of the present embodiment is as follows:
When small turbine 1 normally runs, the modulating valve 5 of small turbine 1 keeps high aperture (70%-100%).High pressure steam enters small turbine 1 by admission pipeline 2, and the low pressure after acting passes through blow-off line 3 steam discharge to vapour condenser 4.Steam Actuation small turbine 1 rotates, thus dragging is rotated with the feed water pump 6 that small turbine 1 one axle heads are coaxially connected.
When Steam Actuation small turbine 1 rotates, another axle head of small turbine 1, by after timing gear roller box 7 speed governing, is converted to the power frequency rotating speed of 50Hz or 60Hz, drags industrial frequency generator 8 and rotates.Now the Partial Power of small turbine 1 exports as power frequency electric, supplies in factory or factory's external power grid.Become large by regulating the output of industrial frequency generator 8 or diminish, the load controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thus the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed controlling feed water pump 6 diminishes or becomes large, to meet different working condition requirements.
In other words, namely by controlling the output (exerting oneself) of industrial frequency generator 8, can partly or entirely replace modulating valve throttle style, controlling the rotating speed of small turbine 1, thus while efficiently meeting feed water pump 6 rotating speed control overflow, improve the operational efficiency of pure condensate formula small turbine.
If when industrial frequency generator 8 output voltage is different from voltage between electrical network, transformer 9 can be set between industrial frequency generator 8 and electrical network, can, by industrial frequency generator 8 electricity transformation to the voltage mated with electrical network, be realized industrial frequency generator 8 electricity to supply in factory or factory's external power grid by transformer 9.
As shown in Figure 5, the pure condensate formula small turbine of the industrial frequency generator speed governing of the present embodiment drives the system difference of feed-water pump and embodiment 1 to be:
Feed water pump 6 and industrial frequency generator 8 are positioned at the same axle head of small turbine 1, the input end of feed water pump 6 is connected with the axle head of small turbine 1, the output terminal of feed water pump 6 is coaxially connected with the input end of timing gear roller box 7, and the output terminal of timing gear roller box 7 is coaxially connected with the input end of industrial frequency generator 8.
The System Working Principle of the present embodiment is as follows:
When Steam Actuation small turbine 1 rotates, drag coaxial feed water pump 6 simultaneously and rotate, the adjustment rotating through timing gear roller box 7 of feed water pump 6 drives industrial frequency generator 8 to rotate generating.By regulating the output of industrial frequency generator 8 become large or diminish, thus control the rotating speed of small turbine 1, and then the rotating speed of control feed water pump 6 is to meet different working condition requirements.
As shown in Figure 6, the pure condensate formula small turbine of the industrial frequency generator speed governing of the present embodiment drives the system difference of feed-water pump and embodiment 1 to be:
In the present embodiment, what small turbine 1 drove is not only a feed water pump, but a feed water pump group, this feed water pump group is made up of front-mounted pump (or other pumps) 10 and feed water pump (or other pumps) 6, and this feed water pump group is positioned at the same axle head of small turbine.According to the rotating speed ratio between front-mounted pump 10 and feed water pump 6, between front-mounted pump 10 and feed water pump 6, constant-speed ratio gear-box 11 is optionally set, constant-speed ratio gear-box 11 is coaxially connected with feed water pump 6, constant-speed ratio gear-box 11 is also coaxially connected with front-mounted pump 10, and the input end of constant-speed ratio gear-box 11 is connected with feed water pump 6 output terminal, the output terminal of constant-speed ratio gear-box 11 is connected with the input end of front-mounted pump 10.
The System Working Principle of the present embodiment is as follows:
When Steam Actuation small turbine 1 rotates, drag coaxial feed water pump 6 simultaneously and rotate, after being regulated by the deceleration of constant-speed ratio gear-box 11, front-mounted pump 10 also rotates simultaneously, and front-mounted pump 10 rotating speed is less than feed water pump 6.During the work of feed water pump group, first front-mounted pump 10 can carry out first time pressurization to feedwater, and then feed water pump 6 can carry out second time pressurization to feedwater.Another axle head of small turbine is by after timing gear roller box 7 speed governing simultaneously, is converted to the power frequency rotating speed of 50Hz or 60Hz, drags industrial frequency generator 8 and rotates.Now the Partial Power of small turbine 1 exports as power frequency electric, supplies in factory or factory's external power grid.Become large by regulating the output of industrial frequency generator 8 or diminish, the load controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thus the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed controlling feed water pump group (or other pump groups) diminishes or becomes large, to meet different working condition requirements.If when industrial frequency generator 8 output voltage is different from voltage between electrical network, transformer 9 can be set between industrial frequency generator 8 and electrical network, can, by industrial frequency generator 8 electricity transformation to the voltage mated with electrical network, be realized industrial frequency generator 8 electricity to supply in factory or factory's external power grid by transformer 9.
As shown in Figure 7, the pure condensate formula small turbine of the industrial frequency generator speed governing of the present embodiment drives the system difference of feed-water pump and embodiment 6 to be:
Industrial frequency generator 8 and the feed water pump group of the present embodiment are positioned at the same axle head of small turbine 1, industrial frequency generator 8 is positioned between feed water pump (or other pumps) 6 and front-mounted pump (or other pumps) 10, and configures timing gear roller box 7 at feed water pump (or other pumps) between 6 and industrial frequency generator 8.Owing to being configured with timing gear roller box 7, therefore no longer configure constant-speed ratio gear-box.Timing gear roller box 7 input end is coaxially connected with feed water pump (or other pumps) 6 output terminals, and timing gear roller box 7 output terminal is coaxially connected with industrial frequency generator 8 input end, and industrial frequency generator 8 output terminal is coaxially connected with front-mounted pump (or other pumps) 10 input ends.
The System Working Principle of the present embodiment is as follows:
When Steam Actuation small turbine 1 rotates, drag coaxial feed water pump (or other pump) 6 simultaneously and rotate, after timing gear roller box 7 speed governing, be converted to the power frequency rotating speed of 50Hz or 60Hz, drag industrial frequency generator 8 and rotate.Now the Partial Power of small turbine 1 exports as power frequency electric, supplies in factory or factory's external power grid.Because front-mounted pump 10 is coaxially connected with industrial frequency generator 8, front-mounted pump (or other pumps) 10 also rotates, and meanwhile, front-mounted pump (or other pumps) 10 rotating speeds are less than the rotating speed of feed water pump (or other pumps) 6.During the work of feed water pump group, first front-mounted pump (or other pumps) 10 can carry out first time pressurization to feedwater, and then feed water pump (or other pumps) 6 can carry out second time pressurization to feedwater.Become large by regulating the output of industrial frequency generator 8 or diminish, the load controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thus the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed controlling feed water pump group (or other pump groups) diminishes or becomes large, to meet different working condition requirements.If when industrial frequency generator 8 output voltage is different from voltage between electrical network, transformer 9 can be set between industrial frequency generator 8 and electrical network, can, by industrial frequency generator 8 electricity transformation to the voltage mated with electrical network, be realized industrial frequency generator 8 electricity to supply in factory or factory's external power grid by transformer 9.
As shown in Figure 8, the pure condensate formula small turbine of the industrial frequency generator speed governing of the present embodiment drives the system difference of feed-water pump and embodiment 7 to be:
The input end of the industrial frequency generator 8 of the present embodiment is coaxially connected with the output terminal of front-mounted pump 10, and configures timing gear roller box 7 between feed water pump (or other pumps) 6 and front-mounted pump (or other pumps) 10.Timing gear roller box 7 input end is coaxially connected with feed water pump (or other pumps) 6 output terminals, and timing gear roller box 7 output terminal is coaxially connected with front-mounted pump (or other pumps) 10 input ends.
The System Working Principle of the present embodiment is as follows:
When Steam Actuation small turbine 1 rotates, drag coaxial feed water pump (or other pump) 6 to rotate simultaneously, after timing gear roller box 7 speed governing, be converted to the power frequency rotating speed of 50Hz or 60Hz, drag front-mounted pump (or other pumps) 10 to rotate, front-mounted pump (or other pumps) 10 rotating speeds are less than the rotating speed of feed water pump (or other pumps) 6, and because industrial frequency generator 8 is coaxially connected with front-mounted pump 10, industrial frequency generator 8 also rotates.Now the Partial Power of small turbine 1 exports as power frequency electric, supplies in factory or factory's external power grid.During the work of feed water pump group, first front-mounted pump (or other pumps) 10 can carry out first time pressurization to feedwater, and then feed water pump (or other pumps) 6 can carry out second time pressurization to feedwater.Become large by regulating the output of industrial frequency generator 8 or diminish, the load controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thus the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed controlling feed water pump group (or other pump groups) diminishes or becomes large, to meet different working condition requirements.If when industrial frequency generator 8 output voltage is different from voltage between electrical network, transformer 9 can be set between industrial frequency generator 8 and electrical network, can, by industrial frequency generator 8 electricity transformation to the voltage mated with electrical network, be realized industrial frequency generator 8 electricity to supply in factory or factory's external power grid by transformer 9.
System of the present invention both by the adjustment of feed water pump group rotating speed to meet the needs of generator set load variations, also generate electricity by industrial frequency generator with the sale of electricity income improving power plant, the variable-frequency electric that industrial frequency generator sends can supply in factory or factory's external power grid, if the electricity that industrial frequency generator sends is different from voltage between electrical network, then can by arranging transformer, by electricity transformation to the voltage mated with electrical network.
Compared with prior art, the present invention has following major advantage:
(1) the common aperture of pure condensate formula small turbine modulating valve in current system is increased to 100% from less than 60%, and large aperture level can being kept for a long time, significantly reducing the small turbine loss that throttling causes because matching with driving arrangement power demand.
(2) operational efficiency of pure condensate formula small turbine of the present invention can improve more than 5%, saves mark more than 5000 tons, coal every platform 1000MW unit year, significantly reduces operating cost, and reach the comprehensive benefit of decreasing pollution thing discharge.
(3) system of the present invention makes full use of the acting ability of small turbine, is generated electricity by industrial frequency generator, and every platform 1000MW unit can externally be powered 7,500 ten thousand kilowatts every year, direct economy income more than 1,500 ten thousand yuan.
The above-mentioned feature that the present invention mentions, or the feature that embodiment mentions can combination in any.All features that this case specification discloses can with any composition forms and use, each feature disclosed in specification, anyly can be provided alternative characteristics that is identical, impartial or similar object and replace.Therefore apart from special instruction, the feature disclosed is only general example that is impartial or similar features.
The all documents mentioned in the present invention are quoted as a reference all in this application, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after having read above-mentioned instruction content of the present invention.
Claims (6)
1. the pure condensate formula small turbine of industrial frequency generator speed governing drives a feed-water pump, and it is characterized in that, described system comprises pure condensate formula small turbine, feed water pump, industrial frequency generator and timing gear roller box, wherein,
Described pure condensate formula small turbine, described feed water pump, described industrial frequency generator are coaxially connected with described timing gear roller box;
Described timing gear roller box is configured between described pure condensate formula small turbine and described industrial frequency generator, thus described small turbine rotate through the speed governing of described timing gear roller box after drive described industrial frequency generator to rotate; And
By controlling the output of described industrial frequency generator, thus control the rotating speed of described pure condensate formula small turbine, and then control the rotating speed of described feed water pump, and
Described pure condensate formula small turbine is provided with admission pipeline, and described admission pipeline is provided with modulating valve;
Described feed water pump, described industrial frequency generator and described timing gear roller box are connected to the same axle head of described pure condensate formula small turbine; And
Described industrial frequency generator is connected with described feedwater delivery side of pump via described timing gear roller box, and the input end of described feed water pump is connected with the axle head of described pure condensate formula small turbine.
2. the system as claimed in claim 1, it is characterized in that, when front-mounted pump and feed water pump composition water pump group, when the rotating speed difference of front-mounted pump and feed water pump is larger, rotatingshaft between front-mounted pump and feed water pump is arranged constant-speed ratio gear-box, to regulate both rotating speed ratio.
3. the system as claimed in claim 1, it is characterized in that, described system also comprises front-mounted pump, described industrial frequency generator is between described feed water pump with described front-mounted pump and be connected with described feed water pump via described timing gear roller box, or described front-mounted pump is between described industrial frequency generator and described feed water pump.
4. system as claimed in claim 3, it is characterized in that, described system also comprises constant-speed ratio gear-box, and described constant-speed ratio gear-box is connected with described front-mounted pump, for regulating the rotating speed of described front-mounted pump.
5. a steam electric power unit, is characterized in that, described generator set is configured with system according to claim 1.
6. the method regulating pure condensate formula small turbine to drive the rotating speed of feed water pump in feed-water pump, described system comprises pure condensate formula small turbine and feed water pump, it is characterized in that, described system also sets up industrial frequency generator and timing gear roller box, thus the pure condensate formula small turbine forming industrial frequency generator speed governing as claimed in claim 1 drives feed-water pump, and by controlling the output of described industrial frequency generator, thus control the rotating speed of pure condensate formula small turbine, and then control the rotating speed of described feed water pump.
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| CN105134307B (en) * | 2015-09-21 | 2017-01-18 | 山东电力建设第一工程公司 | Water cooling system for thermal power plant |
| CN107131010A (en) * | 2017-04-10 | 2017-09-05 | 西安西热节能技术有限公司 | A kind of power station auxiliary vapour electric hybrid driving, electricity generation system and method |
| CN108457709B (en) * | 2018-03-12 | 2021-05-07 | 中国能源建设集团广东省电力设计研究院有限公司 | Control method and system for steam feed pump generator set |
| CN113482731B (en) * | 2021-07-19 | 2022-10-14 | 内蒙古京泰发电有限责任公司 | Synchronous adjustable water supply system based on turbo generator unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240730B1 (en) * | 1997-11-28 | 2001-06-05 | Siemens Aktiengesellschaft | Steam turbogenerator set having a steam turbine and a driven machine for producing electrical power, and method for operation of the steam turbogenerator set |
| CN101657963A (en) * | 2007-02-14 | 2010-02-24 | 阿尔斯托姆科技有限公司 | Be used to move the method for power plant equipment |
| CN101815845A (en) * | 2007-10-04 | 2010-08-25 | 西门子公司 | Generator-steam turbine-turbocompressor-line and method for the operation thereof |
| CN203515687U (en) * | 2013-08-13 | 2014-04-02 | 中国电力工程顾问集团华东电力设计院 | Pure-condensing small turbine driving water feed pump system with speed regulated through power frequency generator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59231104A (en) * | 1983-06-13 | 1984-12-25 | Hitachi Ltd | Controlling system of feed water pump in power plant |
| JP2010163892A (en) * | 2009-01-13 | 2010-07-29 | Toshiba Corp | Steam turbine facility, and method of operating feed water pump drive turbine |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240730B1 (en) * | 1997-11-28 | 2001-06-05 | Siemens Aktiengesellschaft | Steam turbogenerator set having a steam turbine and a driven machine for producing electrical power, and method for operation of the steam turbogenerator set |
| CN101657963A (en) * | 2007-02-14 | 2010-02-24 | 阿尔斯托姆科技有限公司 | Be used to move the method for power plant equipment |
| CN101815845A (en) * | 2007-10-04 | 2010-08-25 | 西门子公司 | Generator-steam turbine-turbocompressor-line and method for the operation thereof |
| CN203515687U (en) * | 2013-08-13 | 2014-04-02 | 中国电力工程顾问集团华东电力设计院 | Pure-condensing small turbine driving water feed pump system with speed regulated through power frequency generator |
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