CN203515687U - Pure-condensing small turbine driving water feed pump system with speed regulated through power frequency generator - Google Patents
Pure-condensing small turbine driving water feed pump system with speed regulated through power frequency generator Download PDFInfo
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- CN203515687U CN203515687U CN201320494712.4U CN201320494712U CN203515687U CN 203515687 U CN203515687 U CN 203515687U CN 201320494712 U CN201320494712 U CN 201320494712U CN 203515687 U CN203515687 U CN 203515687U
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Abstract
The utility model discloses a pure-condensing small turbine driving water feed pump system with speed regulated through a power frequency generator. The system comprises a pure-condensing small turbine, a water feed pump unit, the power frequency generator and a speed-regulating gear box, wherein the pure-condensing small turbine, the water feed pump unit, the power frequency generator and the speed-regulating gear box are connected coaxially. The speed-regulating gear box is arranged between the pure-condensing small turbine and the power frequency generator, and after speed regulating of the speed-regulating gear box, the power frequency generator is driven to rotate; by controlling output of the power frequency generator, the rotating speed of the pure-condensing small turbine is controlled to control the rotating speed of the water feed pump unit. According to the water feed pump system, losses of steam inlet throttling of the small turbine are greatly reduced, operation efficiency is improved, working capacity of the small turbine is brought into full play, and operation earnings are increased. The utility mode further discloses a steam generator unit.
Description
Technical field
The utility model relates to steam-turbine power plant, and the small turbine being specifically related in steam-turbine power plant drives feed-water pump.
Background technique
In large capacity high parameter steam turbine power generation factory, conventionally configure steam feed pump group.With small turbine, drive feed water pump, will feed water and improve pressure, supply with 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, the respective change by speed of feedwater meets conventionally, and speed of feedwater is determined by the rotating speed of the small turbine coaxially connecting.
In order to meet long-term summer unit, completely send out, the nominal output of small turbine is conventionally large than the nominal output of feed water pump, and the nominal output of feed water pump is exerted oneself greatly than unit rated load is needed, therefore the nominal output of small turbine has larger allowance, is generally more than 20%.
Fig. 1-3rd, in prior art, the pure condensate formula small turbine of modulating valve throttle grverning drives feed-water pump schematic flow sheet.In prior art, pure condensate formula small turbine drives feed-water pump to 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 be controlled the rotating speed of small turbine.
This configuration causes small turbine admission modulating valve most working time of aperture less, causes restriction loss.In addition, due to generator set load with electrical network demand every day in lifting, when low-load, the tune valve opening of small turbine can be less, 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 be given full play to, there is relative economic loss.The condensed steam type small turbine that configures at existing steam electric power unit drives in feed-water pump, and annual most of working times, particularly during unit low-load, small turbine is exerted oneself and all underused.The needs of for example completely sending out summer all the year round in order to meet unit, the small turbine that 1 1000MW ultra supercritical power generation unit is configured conventionally 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 unit small turbine is exerted oneself allowance for (22000-17000) x2=10000kW.Therefore the small turbine of every unit does not on average utilize power for more than 10000kW, and this allowance configuration exists very large problem.
Model utility content
The purpose of this utility model is to provide the pure condensate formula small turbine of the industrial frequency generator speed governing that a kind of restriction loss is little, small turbine is exerted oneself utilization ratio is high to drive feed-water pump.
It is in large capacity high parameter steam turbine power generation factory that the pure condensate formula small turbine of industrial frequency generator speed governing of the present utility model drives feed-water pump, generator set configure for after the pressure of feedwater is improved, supply with one of indispensable system of subsequent technique system institute.
System of the present utility model 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 feed water pump is connected on the rotatingshaft of pure condensate formula small turbine.Feed water pump of the present utility model can be both equipment of feed water pump, can be also two equipment of front-mounted pump and feed water pump.In another preference, to front-mounted pump, can match constant-speed ratio gear-box.
Timing gear roller box is for being converted to fixed rotating speed by variation 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 in 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.The input end that is timing gear roller box is connected with the axle head of a 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.The input end that is 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 system of the present utility model, the rotating speed that feed water pump group can be changed regulates by timing gear roller box, is converted into the power frequency rotating speed of 50Hz or 60Hz, thereby drives industrial frequency generator to rotate, and the Partial Power of pure condensate formula small turbine is output as to power frequency electricity.
Pure condensate formula small turbine, feed water pump group, industrial frequency generator and the timing gear roller box of the utility model system are for to be coaxially connected.When feed water pump group is while being comprised of front-mounted pump and feed water pump, when the rotating speed difference of front-mounted pump and feed water pump is larger, constant-speed ratio gear-box can be set on the rotatingshaft between front-mounted pump and feed water pump, to regulate both rotating speed ratio, meet the needs of generator set load variations.
Because driving feed water pump group system, pure condensate formula small turbine of the present utility model regulates 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 most working time of the whole year, the aperture of the modulating valve of pure condensate formula small turbine can keep large aperture (70%-100%) for a long time, even when unit load step-down, can make full use of exerting oneself of pure condensate formula small turbine, by industrial frequency generator, generate electricity, not only significantly reduced restriction loss, and improved the operational efficiency of pure condensate formula small turbine, improve the sale of electricity income of power plant.
The utility model also comprises the steam electric power unit of the pure condensate formula small turbine driving feed water pump group system that disposes industrial frequency generator speed governing.
According to one side of the present utility model, provide a kind of pure condensate formula small turbine of industrial frequency generator speed governing to drive feed-water pump, 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 and described timing gear roller box are coaxially connected;
Described timing gear roller box is configured between described pure condensate formula small turbine and described industrial frequency generator, thereby the rotation of described small turbine drives described industrial frequency generator to rotate after by the speed governing of described timing gear roller box; And
By controlling the output of described industrial frequency generator, thereby 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 with the axle head of a side of pure condensate formula small turbine via timing gear roller box, 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 in 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 and 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 on the other hand of the present utility model, a kind of steam electric power unit is also provided, wherein, the pure condensate formula small turbine that generator set disposes above-mentioned industrial frequency generator speed governing drives feed-water pump.
According to another aspect of the present utility model, a kind of method that regulates pure condensate formula small turbine to drive the rotating speed of feed water pump in feed-water pump is also provided, system comprises pure condensate formula small turbine and feed water pump, wherein, in system, set up industrial frequency generator, by controlling the output of industrial frequency generator, thereby control the rotating speed of pure condensate formula small turbine, and then control the rotating speed of feed water pump.
System of the present utility model makes full use of the acting ability of small turbine, by industrial frequency generator, generates electricity, and every 1000MW unit can externally be powered 7,500 ten thousand kilowatts every year, and direct economy income is more than 1,500 ten thousand yuan.
Accompanying drawing explanation
Fig. 1-3rd, in prior art, the pure condensate formula small turbine of modulating valve throttle grverning drives three canonical system schematic flow sheets of feed-water pump.
Fig. 4 drives the system flow schematic diagram of feed-water pump according to the pure condensate formula small turbine of industrial frequency generator speed governing in the first embodiment of the present utility model.
Fig. 5 drives the system flow schematic diagram of feed-water pump according to the pure condensate formula small turbine of industrial frequency generator speed governing in the second embodiment of the present utility model.
Fig. 6 drives the system flow schematic diagram of feed-water pump according to the pure condensate formula small turbine of industrial frequency generator speed governing in the 3rd embodiment of the present utility model.
Fig. 7 drives the system flow schematic diagram of feed-water pump according to the pure condensate formula small turbine of industrial frequency generator speed governing in the 4th embodiment of the present utility model.
Fig. 8 drives the system flow schematic diagram of feed-water pump according to the pure condensate formula small turbine of industrial frequency generator speed governing in the 5th embodiment of the present utility model.
Embodiment
Inventor is through deeply research widely, discovery is by being coaxially connected industrial frequency generator with pure condensate formula small turbine, not only can be by controlling the mode of exerting oneself of industrial frequency generator, partly or entirely replace modulating valve mode, to control the rotating speed of small turbine, thereby control the rotating speed of feed water pump group, and can utilize industrial frequency generator to generate electricity, thereby take full advantage of exerting oneself of small turbine.The modulating valve of the utility model small turbine can keep high aperture for a long time, and aperture is 70%～100%, has greatly reduced the loss that throttling causes, and has made full use of exerting oneself of small turbine, has improved the operational efficiency of small turbine.Completed on this basis the utility model.
Terminological interpretation:
Industrial frequency generator: the generator that the electricity that normal operation is sent is 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 being connected: refer to that each equipment connection is on same rotation axis system.
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments are only not used in restriction scope of the present utility model for the utility model is described.The experimental technique of unreceipted actual conditions in the following example, conventionally according to normal condition or the condition of advising according to manufacturer.
Unless otherwise defined, the familiar meaning of all specialties of using in literary composition and scientific words and one skilled in the art is identical.In addition, any method similar or impartial to described content and material all can be applicable in the utility model 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 feed-water pump to comprise that 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 main frame vapour condenser, also configurable independently vapour condenser.Modulating valve 5 is installed at admission pipeline place, for regulating the logical vapour amount of high pressure steam, in the present embodiment, and the high aperture of long-term maintenance of modulating valve, aperture is 70%～100%, when equipment failure or maintenance, need to reduce aperture or close.
Feed water pump 6 is positioned at the axle head of small turbine 1 one sides, 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 small turbine 1 this side.
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, 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 small turbine 1 this side, 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.
When during operation, if between industrial frequency generator 8 output voltages and electrical network, voltage is different, transformer 9 can be set between industrial frequency generator 8 and electrical network, by transformer 9, can, by industrial frequency generator 6 electricity transformations to the voltage mating with electrical network, realize industrial frequency generator 8 electricity are supplied with to Chang Neihuo factory external power grid.
The System Working Principle of the present embodiment is as follows:
When small turbine 1 normal operation, 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 is passed through blow-off line 3 steam discharges to vapour condenser 4.Steam Actuation small turbine 1 rotates, thereby drag with the coaxial feed water pump being connected 6 of 1 one axle heads of small turbine, rotates.
When Steam Actuation small turbine 1 rotates, another axle head of small turbine 1, by after 7 speed governing of timing gear roller box, 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 is output as power frequency electricity, supplies with Chang Neihuo factory external power grid.By regulating the output of industrial frequency generator 8 become large or diminish, the load of controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thereby the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed of controlling feed water pump 6 diminishes or becomes greatly, to meet different working condition requirements.
In other words, by controlling the output (exerting oneself) of industrial frequency generator 8, can partly or entirely replace modulating valve throttle style, control the rotating speed of small turbine 1, thereby efficiently meet feed water pump 6 rotating speeds, control when requiring, improved the operational efficiency of pure condensate formula small turbine.
When if between industrial frequency generator 8 output voltages and electrical network, voltage is different, transformer 9 can be set between industrial frequency generator 8 and electrical network, by transformer 9, can, by industrial frequency generator 8 electricity transformations to the voltage mating with electrical network, realize industrial frequency generator 8 electricity are supplied with to Chang Neihuo factory external power grid.
As shown in Figure 5, the pure condensate formula small turbine of the industrial frequency generator speed governing of the present embodiment drives feed-water pump and embodiment's 1 system difference 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 rotation of feed water pump 6 drives industrial frequency generator 8 to rotate generating by the adjusting of timing gear roller box 7.By regulating the output of industrial frequency generator 8 become large or diminish, thereby control the rotating speed of small turbine 1, and then the rotating speed of controlling 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 feed-water pump and embodiment's 1 system difference 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 comprised 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 terminals, and 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 the deceleration adjusting by constant-speed ratio gear-box 11, front-mounted pump 10 also rotates simultaneously, and front-mounted pump 10 rotating speeds are less than feed water pump 6.During the work of feed water pump group, first front-mounted pump 10 can pressurize for the first time to feedwater, and then feed water pump 6 can pressurize for the second time to feedwater.Another axle head of small turbine, by after 7 speed governing of timing gear roller box, is converted to the power frequency rotating speed of 50Hz or 60Hz simultaneously, drags industrial frequency generator 8 and rotates.Now the Partial Power of small turbine 1 is output as power frequency electricity, supplies with Chang Neihuo factory external power grid.By regulating the output of industrial frequency generator 8 become large or diminish, the load of controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thereby the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed of controlling feed water pump group (or other pump groups) diminishes or becomes greatly, to meet different working condition requirements.When if between industrial frequency generator 8 output voltages and electrical network, voltage is different, transformer 9 can be set between industrial frequency generator 8 and electrical network, by transformer 9, can, by industrial frequency generator 8 electricity transformations to the voltage mating with electrical network, realize industrial frequency generator 8 electricity are supplied with to Chang Neihuo factory external power grid.
As shown in Figure 7, the pure condensate formula small turbine of the industrial frequency generator speed governing of the present embodiment drives feed-water pump and embodiment's 6 system difference 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 between feed water pump (or other pumps) 6 and industrial frequency generator 8.Owing to having configured timing gear roller box 7, therefore no longer configure constant-speed ratio gear-box.Timing gear roller box 7 input ends are coaxially connected with feed water pump (or other pumps) 6 output terminals, and timing gear roller box 7 output terminals are coaxially connected with industrial frequency generator 8 input ends, and industrial frequency generator 8 output terminals are 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 7 speed governing of timing gear roller box, 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 is output as power frequency electricity, supplies with Chang Neihuo factory 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 pressurize for the first time to feedwater, and then feed water pump (or other pumps) 6 can pressurize for the second time to feedwater.By regulating the output of industrial frequency generator 8 become large or diminish, the load of controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thereby the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed of controlling feed water pump group (or other pump groups) diminishes or becomes greatly, to meet different working condition requirements.When if between industrial frequency generator 8 output voltages and electrical network, voltage is different, transformer 9 can be set between industrial frequency generator 8 and electrical network, by transformer 9, can, by industrial frequency generator 8 electricity transformations to the voltage mating with electrical network, realize industrial frequency generator 8 electricity are supplied with to Chang Neihuo factory external power grid.
As shown in Figure 8, the pure condensate formula small turbine of the industrial frequency generator speed governing of the present embodiment drives feed-water pump and embodiment's 7 system difference 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 ends are coaxially connected with feed water pump (or other pumps) 6 output terminals, and timing gear roller box 7 output terminals are 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 rotates simultaneously, after 7 speed governing of timing gear roller box, be converted to the power frequency rotating speed of 50Hz or 60Hz, dragging front-mounted pump (or other pumps) 10 rotates, 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 is output as power frequency electricity, supplies with Chang Neihuo factory external power grid.During the work of feed water pump group, first front-mounted pump (or other pumps) 10 can pressurize for the first time to feedwater, and then feed water pump (or other pumps) 6 can pressurize for the second time to feedwater.By regulating the output of industrial frequency generator 8 become large or diminish, the load of controlling pure condensate formula small turbine 1 correspondingly becomes large or diminishes, thereby the rotating speed of pure condensate formula small turbine 1 correspondingly diminishes or becomes large, and then the rotating speed of controlling feed water pump group (or other pump groups) diminishes or becomes greatly, to meet different working condition requirements.When if between industrial frequency generator 8 output voltages and electrical network, voltage is different, transformer 9 can be set between industrial frequency generator 8 and electrical network, by transformer 9, can, by industrial frequency generator 8 electricity transformations to the voltage mating with electrical network, realize industrial frequency generator 8 electricity are supplied with to Chang Neihuo factory external power grid.
System of the present utility model both can be by feed water pump group rotating speed adjusting to meet the needs of generator set load variations, also can generate electricity to improve by industrial frequency generator the sale of electricity income of power plant, the variable-frequency electric that industrial frequency generator sends can be supplied with Chang Neihuo factory external power grid, if voltage is different between the electricity that industrial frequency generator sends and electrical network, can, by transformer is set, electricity transformation be arrived to the voltage mating with electrical network.
Compared with prior art, the utlity model has following major advantage:
(1) by the common aperture of pure condensate formula small turbine modulating valve in current system from being increased to 100% below 60%, and can keep for a long time large aperture level, significantly reduced small turbine because of with the loss that throttling causes that matches of driving arrangement power demand.
(2) operational efficiency of pure condensate formula small turbine of the present utility model can improve more than 5%, saves mark coal 1000MW unit year more than 5000 tons for every, significantly reduces operating cost, and reaches the comprehensive benefit that reduces pollutant emission.
(3) system of the present utility model makes full use of the acting ability of small turbine, by industrial frequency generator, generates electricity, and every 1000MW unit can externally be powered 7,500 ten thousand kilowatts every year, and direct economy income is more than 15,000,000 yuan.
The above-mentioned feature that the utility model is mentioned, or the feature that embodiment mentions can combination in any.All features that this case specification discloses can with any composition forms use, each feature disclosing in specification, the alternative characteristics that can anyly be provided identical, impartial or similar object replaces.Therefore apart from special instruction, the feature disclosing is only the general example of equalization or similar features.
All documents of mentioning at the utility model are all quoted as a reference in this application, just as each piece of document, are quoted as a reference separately.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (9)
1. the pure condensate formula small turbine of industrial frequency generator speed governing drives a feed-water pump, 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 and described timing gear roller box are coaxially connected;
Described timing gear roller box is configured between described pure condensate formula small turbine and described industrial frequency generator, thereby the rotation of described small turbine drives described industrial frequency generator to rotate after by the speed governing of described timing gear roller box; And
By controlling the output of described industrial frequency generator, thereby control the rotating speed of described pure condensate formula small turbine, and then control the rotating speed of described feed water pump.
2. the system as claimed in claim 1, is characterized in that, described pure condensate formula small turbine is provided with admission pipeline, and described admission pipeline is provided with modulating valve.
3. the system as claimed in claim 1, is characterized in that, described feed water pump is connected with the axle head of described pure condensate formula small turbine both sides respectively with described industrial frequency generator.
4. system as claimed in claim 3, it is characterized in that, described industrial frequency generator is connected with the axle head of a side of described pure condensate formula small turbine via described timing gear roller box, and the input end of described feed water pump is connected with the axle head of the opposite side of described pure condensate formula small turbine.
5. the system as claimed in claim 1, is characterized in that, described feed water pump, described industrial frequency generator and described timing gear roller box are connected in the same axle head of described pure condensate formula small turbine.
6. system as claimed in claim 5, is characterized in that, 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.
7. system as claimed in claim 5, it is characterized in that, described system also comprises front-mounted pump, described industrial frequency generator is between described feed water pump and 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.
8. system as claimed in claim 7, 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.
9. a steam electric power unit, is characterized in that, described generator set disposes system claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320494712.4U CN203515687U (en) | 2013-08-13 | 2013-08-13 | Pure-condensing small turbine driving water feed pump system with speed regulated through power frequency generator |
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| CN201320494712.4U CN203515687U (en) | 2013-08-13 | 2013-08-13 | Pure-condensing small turbine driving water feed pump system with speed regulated through power frequency generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397919A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Feed pump system driven by straight condensing small turbine and speed-governed by power frequency generator and method |
| CN104329126A (en) * | 2014-10-09 | 2015-02-04 | 北京联优创展科技有限公司 | Water supply pump constant-speed small steam turbine coaxial driving electric generating set |
-
2013
- 2013-08-13 CN CN201320494712.4U patent/CN203515687U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397919A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Feed pump system driven by straight condensing small turbine and speed-governed by power frequency generator and method |
| CN103397919B (en) * | 2013-08-13 | 2016-01-06 | 中国电力工程顾问集团华东电力设计院有限公司 | The pure condensate formula small turbine of industrial frequency generator speed governing drives feed-water pump and method |
| CN104329126A (en) * | 2014-10-09 | 2015-02-04 | 北京联优创展科技有限公司 | Water supply pump constant-speed small steam turbine coaxial driving electric generating set |
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