CN206539375U - A kind of coaxial double drive feed-water pumps of power-balance generating steam turbine - Google Patents
A kind of coaxial double drive feed-water pumps of power-balance generating steam turbine Download PDFInfo
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- CN206539375U CN206539375U CN201720015680.3U CN201720015680U CN206539375U CN 206539375 U CN206539375 U CN 206539375U CN 201720015680 U CN201720015680 U CN 201720015680U CN 206539375 U CN206539375 U CN 206539375U
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Abstract
The utility model discloses a kind of coaxial double drive feed-water pumps of power-balance generating steam turbine, using the feed pump turbine sequentially coaxially laid, clutch, generator, arrangements for speed regulation and feed pump, feed pump turbine and dual drive of the generator to feed pump are realized；Generator switches between motoring condition and generating state, as generator when feed pump turbine rotating speed exceedes clutch setting speed or when its dependent variable exceedes setting value, by part or all of feed pump turbine power output, is converted to electrical power output.Feed pump turbine output speed less than setting numerical value after or its dependent variable less than setting numerical value after run with electric motor mode, drive feed pump.When the utility model is applied to back-heating type driving feed pump turbine system in two-shipper backheat therrmodynamic system, high-pressure heater and attached valve and pipe-line system can be simplified, reduced the fault point, the resistance of ducting is reduced, auxiliary feed water pump can be played a part of.
Description
Technical field
The utility model belongs to boiler water feeding pump actuation techniques field, more particularly to a kind of power-balance generating vapour electricity
Coaxial double drive feed-water pumps.
Background technology
General fire (heat) Power Plant, feed pump is driven using motor or using small turbine driving, especially to double
For machine heat regenerative system, feed pump is driven using two-shipper backheat small turbine, meanwhile, two-shipper backheat small turbine is also dragged
One small generators, herein referred to as power-balance generator.
So-called two-shipper heat regenerative system, i.e., in therrmodynamic system outside main steam turbine, set one can provide some levels and return
Heat, which is drawn gas, substitutes the therrmodynamic system that some grades of regenerative steams of main steam turbine carry out stepped heating feedwater.Generally should be independently of main steam turbine
Regenerative steam turbine be additionally operable to dragging feed pump and power-balance generator, referred to as back-heating type driving steam turbine.
With the lasting lifting of material at high temperature performance, the steam parameter continuous improvement of Thermal generation unit is higher to obtain
The coal consumption of cycle efficieny, further reduction unit, reduces greenhouse gases and other pollutant emissions.Phase late 1990s and
At the beginning of 21 century, European Union, the U.S. and Japan successively start advanced ultra supercritical (USC) generation technology research of 700 DEG C and the above
Plan, the renewal equipped for thermoelectricity of future generation provides technology." AD700 " advanced ultra supercritical that European Union starts in January, 1998
Generation schedule, its target is to set up 500MW, the Demonstration Station of 700 DEG C/720 DEG C/35MPa grades, utilized with reference to fume afterheat,
Reduce back pressure, the reduction resistance of ducting, improve the technical measures such as feed temperature, unit efficiency is reached more than 50%.In July, 2010
23, National Energy Board set up " national ultra-supercritical power generation technology Innovation Alliances ", indicates that China formally starts correlation
Technical research.
As technology transition, turbine parameters are 35MPa/615 DEG C/630 DEG C/630 DEG C, are achievable highests at this stage
Design of Steam Turbine parameter, complied with the development trend of high-parameter steam turbine group in world wide.
With the raising of steam parameter, the regenerative steam degree of superheat increases, and vapour side and the heat exchange of water side can not in bleeder heater
Inverse loss increase, weakens and improves the income that steam parameter is brought.Steam parameter is higher, and this contradiction is more prominent.For this
Problem, conventional solution is externally arranged steam cooler to be set up by the part regenerative steam after reheating, to drop at present
The degree of superheat of low regenerative steam.Another method is exactly to use special therrmodynamic system structure-two-shipper heat regenerative system, the method
The heat exchange degree of superheat of all regenerative steams after reheating can be greatly reduced in theory, the utilization of regenerative steam energy level can be greatly improved
Efficiency.Feed pump turbine is designed as back pressure machine, and by being drawn gas on the small turbine with one or more bleeder heaters.
For the relatively low steam turbine of initial conditions, the system does not have any clear superiority, is not special particularly in reheat steam temperature
In the case of height, reheating is not obvious to the weakening effect of backheat, directly draws gas backheat as preferred scheme from main steam turbine.And it is right
It is higher compared to externally arranged steam cooler scheme is set up using two-shipper heat regenerative system in million double reheat power generation sets of high parameter
Effect.At present, the engineering Application Research both at home and abroad for two-shipper backheat therrmodynamic system is just carried out, and is belonged to before thermal power generating technology
Edge.
By taking certain 35MPa/615 DEG C/630 DEG C/630 DEG C million double reheat therrmodynamic system as an example.Steam turbine has 12 grades
Non- adjustment is drawn gas, and is provided jointly by main steam turbine and back-heating type driving small turbine.One~six grade is drawn gas respectively to six grades of high pressures
Heater steam supply；One section is drawn gas and back-heating type drives small steam turbine to enter vapour from cold section of steam discharge of main steam turbine ultra-high pressure cylinder；2nd, three,
4th, five, six sections are drawn gas and drive small steam turbine is at different levels to draw gas from back-heating type；Seven grades of regenerative steams drive small steam turbine to take out from back-heating type
Vapour, heating steam is provided for oxygen-eliminating device；Eight grades of regenerative steams are driven in small steam turbine back pressure steam discharge and main steam turbine from back-heating type
Cylinder pressure steam discharge, provides heating steam, and be provided with overflow to the nine grades low blow-off line added for No. 8 contact(-type) heaters；9th,
Tenth, 11,12 grades are drawn gas from main steam turbine low pressure (LP) cylinder, respectively to four low-pressure heater steam supplies.Such as the institute of Figure of description 2
Show.
For two-shipper backheat therrmodynamic system, under accidental conditions, the small steam turbine of backheat, which enters steam flow amount, to be heated by backheat
Device self-balancing is drawn gas decision, and feed pump capacity is that feedwater flow and feed head are determined under certain operating mode, therefore is given under each operating mode
Water pump is exerted oneself enter steam flow amount (i.e. small machine is exerted oneself) with small machine between can not possibly match completely, for such case, under THA operating modes
Small machine is designed as pitch standard-sized sheet, now small machine has highest efficiency, while rationally designing the through-current capability of small machine so that
Under THA operating modes, in addition to band feed pump, unnecessary shaft power can balance power output with small generators, in different load work
Under condition, coordinate exerting oneself for feed pump by the electric load of small generators.Under partial load condition, small machine initial steam pressure is slided
Low, throttle flow is reduced, and the efficiency of feed pump declines, and feedwater flow and pressure head reduce, and resultant effect goes out for whole feedwater pump group
Power reduces, under full load mode, in order to improve economy, makes every effort to small machine pitch and is not involved in regulation, can only pass through small machine band
Power-balance generator matches shaft power, and generated output is differed under each operating mode, substantially between 10MW~30MW.
While due to backheat Steam Turbine Driven feed pump and power-balance small generators, 1-6 grades of hyperbaric heatings are also provided
Device heats steam.If high-pressure heater fault disconnection, influenceed being constituted on the safe operation of backheat steam turbine, according to high pressure plus
Hot device is single-row or biserial, is analyzed as follows：
If high-pressure heater uses " being cut off one by one when single-row arrangement, failure " pattern, when middle certain high-pressure heater
Generation accident, the high-pressure heater will be split.Now, previous stage high-pressure heater will undertake the thermic load that off-the-line height adds, its
The amount of drawing gas increases to original 2 times or so, and high heating load is significantly increased, not only larger to small steam turbine influence on system operation, also needs every
Individual high plus be respectively provided with bypass, bypass valve quantity is more, and cost is high, and feedwater piping resistance increases, and system is excessively complicated.
And if high-pressure heater is using " excision is arranged when dually arrayed, failure " pattern, certain high-pressure heater generation thing
Therefore, the row high-pressure heater column 6 Tai Gaojia whole off-the-lines, also another 6 high-pressure heater operations of row.Now, high pressure
The heater amount of drawing gas is reduced by about 50%；Correspondence respectively takes out the reduction of the mouth amount of drawing gas equal proportion, smaller to through-flow disturbance；Two row height are added to
Water side is using 50% bypass greatly, and system operation control is simpler.But program distinct disadvantage is that high-pressure heater quantity is excessive,
Increase equipment investment and civil engineering costs.
Utility model content
The utility model is in order to solve the above problems, it is proposed that a kind of coaxial double drive feed pump systems of power-balance generating vapour electricity
System, the power-balance generator that the utility model drags back-heating type driving steam turbine is simultaneously as motor, in back-heating type vapour
Automatic when turbine can not be put into is " motor " pattern by " generator " mode adjustment, feed pump is driven as motor, i.e.,
Just all high plus excision simultaneously, regenerative steam turbine faults itself are cut off, also ensure that the stable operation of feed pump, ensure
The security of boiler feedwater, the utility model can solve the problem that high plus influence of the failure to water supply system safe operation.
First purpose of the present utility model is to propose a kind of coaxial double drive feed-water pumps of power-balance generating vapour electricity, and this is
System sets at least one small turbine to drag outside at least one feed pump, is also coaxially disposed at least one generator, generator is same
When possess motor function, can in time cut, be driven as motor when small turbine can not drive feed pump
Feed pump.
Meanwhile, above-mentioned drive system is not limited solely to two-shipper backheat therrmodynamic system, back-heating type driving steam turbine and driven
Water supply system, the water supply system that conventional thermodynamic system, common feed pump turbine be driven can also be applied to, given in steam-operating
When water pump drags feed pump, extra one Driven by Coaxial motor of increase, when steam feed pump can not be put into, urgent input with
Ensure the safe operation of feed pump.These simple adjustment for belonging to the change of applicable water supply system and carrying out, therefore, these
Simple change all should belong to protection domain of the present utility model.
It should be pointed out that the system and generator or motor mentioned by method, are notional appellations, according to
Generator or motor principle of reversibility, two conceptions of species are actually unified, when attempting with the generating of institute's appellation in device concept
When machine or motor modification system and method, abuse is still fallen within.Generator mentioned by the system and method, can also
It is initially motor.
In addition, the motor or generator can be determined according to the demand of the specific system of concrete engineering, can only it make
For motor, generator function, and the simple change of connected mode and driving method can also be provided simultaneously with, this area is belonged to
The simple replacement that technical staff is carried out under the enlightenment of operation principle of the present utility model, all should belong to protection of the present utility model
Scope.
To achieve these goals, the utility model is adopted the following technical scheme that：
A kind of coaxial double drive feed-water pumps of power-balance generating vapour electricity, including the feed pump steamer sequentially coaxially laid
Machine, clutch, generator, arrangements for speed regulation and feed pump, the output shaft of the feed pump turbine connect the input shaft of clutch,
The output shaft of clutch connects the input shaft of generator, and the output shaft of generator connects the input shaft of arrangements for speed regulation, arrangements for speed regulation
Output shaft connection feed pump, adjust feed pump rotating speed, realize that feed pump turbine is right in a motor mode with generator
The dual drive of feed pump；
The generator switches between motoring condition and generating state, when feed pump turbine rotating speed is set more than clutch
As generator when determining rotating speed or when its dependent variable exceedes setting value, by a part for feed pump turbine power output or complete
Portion, is converted to electrical power output.Feed pump turbine output speed less than setting numerical value after or its dependent variable less than setting
Run after numerical value with electric motor mode, drive feed pump.
The clutch is after the output speed of feed pump turbine is higher than setting numerical value or its dependent variable is higher than setting number
The generator in motoring condition is connected with feed pump turbine automatically after value.It is less than in the output speed of feed pump turbine
Setting numerical value after or its dependent variable less than setting numerical value after the generator in generating state and feed pump turbine are taken off automatically
Open.
Switching of the generator between power generation mode and electric model can also use manual switching pattern.Save and cut automatically
Function or related automatic switching control equipment are changed also in this patent protection domain.
The arrangements for speed regulation are inputted the power required for feed pump by motor output end, and according to the need of water supply system
Adjust the rotating speed of feed pump.
Further, the arrangements for speed regulation are adjusted using planetary gear arrangements for speed regulation, mechanical adjustable speed drive or fluid power principle
Speed variator.
The arrangements for speed regulation by taking planetary gear arrangements for speed regulation as an example, a part of power by planetary gear arrangements for speed regulation inside
Fluid torque-converter transmission, reach the planetary gear of planetary gearsets, remaining Partial Power passes through planetary gear arrangements for speed regulation
Main shaft is transferred to the secondary external toothing of planetary gear in purely mechanic mode, and the vector that power is finally carried out in planetary gearsets is folded
Plus, the result of superposition is exported by sun gear to feed pump main shaft.
External toothing among the planetary gearsets is mechanically connected with input shaft, keeps rotating speed and the steering of fixation.
By adjusting the aperture of the flow deflector in torque-converters, the output speed of torque-converters is adjusted according to setting command value
Section, the speed exports the planetary gear in planetary gearsets, and the vector superposed of speed is carried out between external toothing and several planetary gears,
So that the output speed of sun gear changes, sun gear is connected with the input shaft of feed pump, realizes to feed pump speed governing.
Further, the motor can be asynchronous motor, and the asynchronous motor is dragged by prime mover, asynchronous electricity
When motivation rotor speed exceedes synchronous rotational speed, the direction of relative movement and motoring condition of rotor conductor and rotating excitation field are on the contrary, turn
The electromagnetic torque that electron current is produced with rotating excitation field interaction is with rotor direction of rotation on the contrary, motor is changed into generator operation shape
State.
Further, the feed pump turbine, can be regenerative steam turbine, back pressure turbine, steam extraction and condensing formula
All can be as the steam turbine form dragged for steam turbine, condensing turbine etc., but is also not limited to steam-operating form, also wraps
Include other power sources and principle of dynamics machine, such as diesel engine, motor, internal combustion engine.
A kind of control method based on above-mentioned drive system, using the feed pump turbine, generator coaxially laid, to
The output speed of water pump steam turbine exceedes after certain numerical value or after power output as little as certain numerical value will be in motoring condition automatically
Generator be connected with feed pump turbine and the power output of feed pump turbine passed into motor, make generator simultaneously
As motor, electric model is adjusted to by power generation mode automatically when regenerative steam turbine can not be put into, come as motor
Drive feed pump.
The beneficial effects of the utility model are：
1st, the utility model system is when the back-heating type driving feed pump turbine system in two-shipper backheat therrmodynamic system that is applied to
When, high-pressure heater and attached valve and pipe-line system can be simplified, investment is substantially reduced, reduce the fault point, reduction pipeline resistance
Power, while auxiliary feed water pump can be played a part of.
2nd, two-shipper heat regenerative system high-pressure heater can use conventional high-pressure heater by-pass pattern, any Tai Gaojiaqie
Remove, do not influence the safe operation of feed pump.
3rd, under the startup stage of unit, electric motor mode, it can be used as electronic startup feed pump, save power plant usual
The electronic startup feed pump and system set, further reduction investment.
Brief description of the drawings
Fig. 1 is the coaxial double drive feed-water pump structural representations of the utility model power-balance generating vapour electricity；
Fig. 2 is the utility model embodiment two-shipper backheat principled thermal system schematic diagram；
Fig. 3 (a) is the vector superposed schematic diagram that power is carried out in the utility model embodiment planetary gearsets；
Fig. 3 (b) is the vector superposed figure that power is carried out in the utility model embodiment planetary gearsets；
Fig. 4 is that the utility model embodiment planetary gearsets carry out velocity principle of stacking figure；
Wherein, 1. feed-water pump turbine, 2. clutches, 3. generators, 4. arrangements for speed regulation, 5. feed pumps.
Embodiment：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
The utility model discloses a kind of coaxial double drive feed-water pumps of power-balance generating vapour electricity, the system and method is removed
Set at least one small turbine to drag outside at least one feed pump, also set up at least one power-balance generator, the generating
Machine can be provided simultaneously with motor function, can be when small turbine can not drive feed pump, and incision in time comes as motor
Drive feed pump.
The utility model gives power-balance generating vapour electricity coaxial double embodiments for driving feed-water pump, bag
Include：
Embodiment：
As shown in figure 1, the coaxial double feed-water pumps that drive of power-balance generating vapour electricity include：Feed pump turbine 1, generator
3 is coaxially arranged, drives feed pump 5, and the output shaft of the feed pump turbine 1 connects the input shaft of clutch 2；Clutch 2
Output shaft connects the input shaft of generator 3；The output shaft of generator 3 connects the input shaft of arrangements for speed regulation 4；Arrangements for speed regulation 4 it is defeated
Shaft connects feed pump 5.Connection between each sequence number equipment axle, as needed can be using shaft coupling connection, it would however also be possible to employ
It is directly connected to, the property with specific reference to connecting shaft is determined in mechanical detailed design phase.
The utility model system when in applied to two-shipper backheat therrmodynamic system back-heating type drive feed pump turbine system when,
High-pressure heater and attached valve and pipe-line system can be simplified, investment is substantially reduced, reduce the fault point, the resistance of ducting is reduced,
Auxiliary feed water pump can be played a part of simultaneously.Two-shipper heat regenerative system high-pressure heater can use conventional high-pressure heater by-pass
Pattern, any Tai Gaojia excisions, does not influence the safe operation of feed pump.Under the startup stage of unit, electric motor mode, energy
It is enough to be used as electronic startup feed pump, electronic startup feed pump and system that power plant is generally set are saved, further reduction is thrown
Money.
Below by asynchronous generator of motor, arrangements for speed regulation be MTV planetary gears arrangements for speed regulation, clutch for surmount from
Application in clutch, certain 1000MW high parameter double reheat back-heating type driving steam turbine as an example, to wherein key technology point
Briefly explained.This example is not limited in other types arrangements for speed regulation, other similar functions clutches, other generator shapes
Applied on formula, other capacity or backheat form unit.
(1) MTV planetary gears arrangements for speed regulation
Planetary gear arrangements for speed regulation are used in the design of optimization, whole system in addition to output shaft is high speed shaft, other portions
Part is all run in the slow-speed of revolution, and overall reliability is higher than conventional fluid-flywheel clutch, and overhaul time reaches 7-8.Meanwhile, use
Power dividing principle, most power is mechanically directly transmitted, only using fraction power progress hydraulic speed-regulating,
Hydraulic losses are greatly reduced, overall transmission efficiency is greatly improved, and high efficient district is more widened.
As shown in Fig. 3 (a) and Fig. 3 (b), fraction power (about 25%) passes through the liquid inside planetary gear arrangements for speed regulation
Power torque-converters is transmitted, and reaches the planetary gear of planetary gearsets, and most of power (about 75%) is filled by planetary gear speed governing
The main shaft put is transferred to the secondary external toothing of planetary gear in purely mechanic mode, and the arrow of power is finally carried out in planetary gearsets
Amount superposition, the result of superposition is exported by sun gear to feed pump main shaft.
As shown in figure 4, the external toothing among planetary gearsets is mechanically connected with input shaft, keep the rotating speed of fixation and turn
To.By adjusting the aperture of the flow deflector in torque-converters, the output speed of torque-converters can be specified according to user to be adjusted, should
Speed exports the planetary gear in planetary gearsets, so, and the vector superposed of speed is carried out between external toothing and several planetary gears,
So that the output speed of sun gear changes (reduction or increase), sun gear is connected with the input shaft of feed pump, be achieved in to
The purpose of pump speed control.
(2) asynchronous generator
Asynchronous machine its operation principle as direct current generator, synchronous motor is also reversible, and it both can be as electronic
Machine is run, and can also be used as generator operation.One asynchronous motor for being currently running, if being dragged with a prime mover, makes to turn
Rotor speed n exceedes synchronous rotational speed n0, and the direction of relative movement of rotor conductor and rotating excitation field is with motoring condition on the contrary, rotor current
The electromagnetic torque produced with rotating excitation field interaction is with rotor direction of rotation on the contrary, motor is changed into generator operation state.
(3) freewheel clutch
Freewheel clutch is the basic part occurred with the development of electromechanical integrated product, and it is to be used for prime mover and work
Make between machine or power transmission and the important component of separation function between driving shaft and driven shaft inside machine.It is using it is main,
The velocity variations of secondary part or device of the conversion with voluntarily clutch function of direction of rotation.
It is not new to this practicality although above-mentioned embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deform still in protection model of the present utility model
Within enclosing.
Claims (9)
1. a kind of coaxial double drive feed-water pumps of power-balance generating vapour electricity, it is characterized in that：Including the feedwater sequentially coaxially laid
Mercury vapour turbine, clutch, generator, arrangements for speed regulation and feed pump, the output shaft connection clutch of the feed pump turbine
Input shaft, the output shaft of clutch connects the input shaft of generator, and the output shaft of generator connects the input shaft of arrangements for speed regulation, adjusts
The output shaft connection feed pump of speed variator, adjusts the rotating speed of feed pump, realizes feed pump turbine with generator in motor mould
To the dual drive of feed pump under formula；
The generator switches between motoring condition and generating state, turns when feed pump turbine rotating speed exceedes clutch setting
When fast or its dependent variable exceed setting value when as generator, by part or all of feed pump turbine power output, turn
Be changed to electrical power output, feed pump turbine output speed less than setting numerical value after or its dependent variable less than setting numerical value after
Run with electric motor mode, drive feed pump；
The clutch feed pump turbine output speed higher than setting numerical value after or its dependent variable higher than setting numerical value after
Automatically the generator in motoring condition is connected with feed pump turbine, is less than setting in the output speed of feed pump turbine
After numerical value or its dependent variable is automatic less than after setting numerical value disengages the generator in generating state and feed pump turbine.
2. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 1, it is characterized in that：It is described to adjust
Speed variator inputs the power required for feed pump by generator output end, and according to water supply system the need for adjust feed pump
Rotating speed.
3. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 1, it is characterized in that：It is described to adjust
Speed variator uses planetary gear arrangements for speed regulation, mechanical adjustable speed drive or fluid power principle arrangements for speed regulation.
4. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 1, it is characterized in that：It is described to give
Water pump steam turbine, be regenerative steam turbine, back pressure turbine, extraction-condensing steam turbine or condensing turbine etc. all can
As the steam turbine form of dragging, also including other power sources and principle of dynamics machine.
5. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 1, it is characterized in that：Generator
Switching between power generation mode and electric model uses manual switching pattern.
6. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 1, it is characterized in that：It is described to adjust
Quick-mounting is set to planetary gear arrangements for speed regulation, and a part of power is transmitted by the fluid torque-converter inside planetary gear arrangements for speed regulation,
The planetary gear of planetary gearsets is reached, remaining Partial Power is by the main shaft of planetary gear arrangements for speed regulation in purely mechanic mode
The secondary external toothing of planetary gear is transferred to, the vector superposed of power is finally carried out in planetary gearsets, the result of superposition passes through
Sun gear is exported to feed pump main shaft.
7. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 6, it is characterized in that：The row
External toothing among star gear train is mechanically connected with input shaft, keeps rotating speed and the steering of fixation.
8. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 6, it is characterized in that：By adjusting
The aperture of flow deflector in whole torque-converters, the output speed of torque-converters is adjusted according to setting command value, the output speed
Planetary gear in planetary gearsets, carries out the vector superposed of speed so that sun gear between external toothing and several planetary gears
Output speed changes, and sun gear is connected with the input shaft of feed pump, realizes to feed pump speed governing.
9. the coaxial double drive feed-water pumps of a kind of power-balance generating vapour electricity as claimed in claim 1, it is characterized in that：The electricity
Motivation is asynchronous motor, and the asynchronous motor is dragged by prime mover, when asynchronous motor rotor rotating speed exceedes synchronous rotational speed,
Rotor conductor and the direction of relative movement of rotating excitation field are with motoring condition on the contrary, rotor current is produced with rotating excitation field interaction
Electromagnetic torque and rotor direction of rotation on the contrary, motor is changed into generator operation state.
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| CN201720015680.3U CN206539375U (en) | 2017-01-06 | 2017-01-06 | A kind of coaxial double drive feed-water pumps of power-balance generating steam turbine |
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| CN201720015680.3U CN206539375U (en) | 2017-01-06 | 2017-01-06 | A kind of coaxial double drive feed-water pumps of power-balance generating steam turbine |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278131A (en) * | 2017-01-06 | 2018-07-13 | 山东电力工程咨询院有限公司 | A kind of power-balance power generation vapour electricity coaxial pair of drive feed-water pump and method |
| CN108386238A (en) * | 2018-02-11 | 2018-08-10 | 大同煤矿集团有限责任公司 | A kind of motor-small turbine variable speed dual drive system |
| CN110259529A (en) * | 2018-12-31 | 2019-09-20 | 上海康恒环境股份有限公司 | A kind of system that feed pump driving reduces garbage incinerating power plant station service power consumption rate |
| CN110374835A (en) * | 2019-07-29 | 2019-10-25 | 东南大学 | A kind of the feed pump variable speed drive system and driving method of two-shipper backheat unit |
| CN110486094A (en) * | 2019-08-08 | 2019-11-22 | 大唐郓城发电有限公司 | A kind of back pressure extraction feed pump small turbine system with high-efficiency hydraulic speed regulation device |
| CN110645062A (en) * | 2019-10-31 | 2020-01-03 | 大唐郓城发电有限公司 | Double-machine regenerative system participating in primary frequency modulation and operation method thereof |
| CN113482731A (en) * | 2021-07-19 | 2021-10-08 | 内蒙古京泰发电有限责任公司 | Synchronous adjustable water supply system based on turbo generator unit |
| CN115478923A (en) * | 2022-10-13 | 2022-12-16 | 华能秦煤瑞金发电有限责任公司 | Variable-frequency power generation and heat regeneration integrated water feeding pump steam turbine system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278131A (en) * | 2017-01-06 | 2018-07-13 | 山东电力工程咨询院有限公司 | A kind of power-balance power generation vapour electricity coaxial pair of drive feed-water pump and method |
| CN108386238A (en) * | 2018-02-11 | 2018-08-10 | 大同煤矿集团有限责任公司 | A kind of motor-small turbine variable speed dual drive system |
| CN108386238B (en) * | 2018-02-11 | 2023-09-05 | 晋能控股煤业集团有限公司 | Motor-small steam turbine variable-rotation-speed double-driving system |
| CN110259529A (en) * | 2018-12-31 | 2019-09-20 | 上海康恒环境股份有限公司 | A kind of system that feed pump driving reduces garbage incinerating power plant station service power consumption rate |
| CN110374835A (en) * | 2019-07-29 | 2019-10-25 | 东南大学 | A kind of the feed pump variable speed drive system and driving method of two-shipper backheat unit |
| CN110486094A (en) * | 2019-08-08 | 2019-11-22 | 大唐郓城发电有限公司 | A kind of back pressure extraction feed pump small turbine system with high-efficiency hydraulic speed regulation device |
| CN110645062A (en) * | 2019-10-31 | 2020-01-03 | 大唐郓城发电有限公司 | Double-machine regenerative system participating in primary frequency modulation and operation method thereof |
| CN113482731A (en) * | 2021-07-19 | 2021-10-08 | 内蒙古京泰发电有限责任公司 | Synchronous adjustable water supply system based on turbo generator unit |
| CN115478923A (en) * | 2022-10-13 | 2022-12-16 | 华能秦煤瑞金发电有限责任公司 | Variable-frequency power generation and heat regeneration integrated water feeding pump steam turbine system |
| WO2024077655A1 (en) * | 2022-10-13 | 2024-04-18 | 华能秦煤瑞金发电有限责任公司 | Variable-frequency generation and heat regeneration integrated steam turbine system for feed water pump |
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