CN107131010A - A kind of power station auxiliary vapour electric hybrid driving, electricity generation system and method - Google Patents
A kind of power station auxiliary vapour electric hybrid driving, electricity generation system and method Download PDFInfo
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- CN107131010A CN107131010A CN201710231234.0A CN201710231234A CN107131010A CN 107131010 A CN107131010 A CN 107131010A CN 201710231234 A CN201710231234 A CN 201710231234A CN 107131010 A CN107131010 A CN 107131010A
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- motor
- blower fan
- pump
- small turbine
- clutch
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- 230000005611 electricity Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of driving of power station auxiliary vapour electric hybrid, electricity generation system and method, including pump/blower fan, small turbine, motor, gear-box, station service electrical system etc..It is divided into two kinds of forms：The double shaft forms of motor, the same to pump/blower fan in one end is coaxially connected by shaft coupling, and one end is coaxially connected by clutch and gear-box with small turbine；The double shaft forms of pump/blower fan, one end is coaxially connected by shaft coupling with motor, and one end is coaxially connected by clutch and gear-box with small turbine.Motor and station service electrical system are connected by high voltage bus.The present invention realizes without the electronic startup pump/blower fan of redundant configuration and starts pump/blower fan or motor start-up pump/blower fan using adjacent machine auxiliary steam driving small turbine；Small turbine transfer tube/blower fan when unit is normally run, motor is standby or switchs to generating state automatically, and entering vapour pitch in each load section operation small turbine can be achieved standard-sized sheet, high-efficiency and economic operation.The features such as with equipment investment, redundant high, the raising performance driving economy of pump/blower fan power source, reduction station service power consumption rate is saved.
Description
【Technical field】
The invention belongs to energy saving for power plants consumption reduction field, it is related to a kind of power station auxiliary vapour electric hybrid driving, generate electricity system
System and method.
【Background technology】
In recent years, country puts into huge in energy saving for power plants emission reduction field, and achieves prominent achievement, units consumption and
The indexs such as pollutant emission decline year by year.Start effectively to solve main current consuming apparatus such as boiler feed pump, boiler induced-draft fan
When the excessive impact to station service electrical system of electric current；Station service power consumption rate is reduced, power supply capacity is improved；Realize that boiler feed pump, boiler draw
Blower fan variable speed is adjusted, to ensure that boiler feed pump, boiler induced-draft fan remain that greater efficiency is transported under unit each load
Boiler feed pump, boiler induced-draft fan are changed to small turbine driving by the purposes such as row, part thermal power plant by motor driving, and part is new
Crew qiting steam feed pump, steam-driven induced draft fan are built, as shown in Figure 1.But it is existing that boiler feedwater is driven using single small turbine
Pump, the pattern of boiler induced-draft fan still suffer from following shortcoming, restrict unit overall economy quality.
1) to meet unit starting requirement, the electronic startup feed pump of one certain capacity of redundant configuration/air-introduced machine, shape is needed
Fed water into 2 × 50% capacity steam feed pumps/electrically driven feed pump of air-introduced machine+1/air-introduced machine or 1 × 100% capacity steam-operating
The basic configuration of the pump/electrically driven feed pump of air-introduced machine+1/air-introduced machine.During electronic startup feed pump/air-introduced machine removes unit starting
Stoppage in transit state is chronically at outside short-time duty, utilization rate of equipment and installations is low.Further for the air-introduced machine worked in air and flue system, due to
The damper electronic air-introduced machine equipment corrosion situation caused that is not closed completely is more serious, safeguards, the work that maintenance is even changed
Amount is greatly increased.
2) in small turbine driving feed pump/air-introduced machine scheme, small turbine maximum capacity should meet feed pump/air-introduced machine
TB operating modes.Small turbine design point is according to feed pump/air-introduced machine TB operating mode type selectings, and its high-efficiency point is near BMCR operating points.So
And national capacity of installed generator rapid growth in recent years, the overall rich, some areas of power supply and demand situation are superfluous, in addition non-fossil
The energy such as wind-powered electricity generation, water power, photovoltaic etc. impact, and fired power generating unit certainly will be in depth peak regulation state, unit whole year load over the next several years
Rate is in reduced levels, and air-introduced machine driving small turbine deviates high-efficiency point operation, has a strong impact on unit overall economy quality for a long time.
3) for boiler induced-draft fan, if the fired power generating unit of configuration steam-driven induced draft fan implements ultra-clean discharge improvement project again, because
The rise of wind and smoke resistance causes air inducing acc power to increase, it will small turbine occur and exert oneself that the feelings of air-introduced machine peak power can not be met
Condition to small turbine, it is necessary to carry out secondary transformation, and the investment waste thereby resulted in will be increased considerably.
【The content of the invention】
It is an object of the invention to overcome the shortcoming of above-mentioned prior art to be driven there is provided a kind of power station auxiliary vapour electric hybrid
Dynamic, electricity generation system and method, the system are realized without the electronic startup pump/blower fan of redundant configuration and drive small vapour using adjacent machine auxiliary steam
Turbine starts pump/blower fan or motor start-up pump/blower fan；Small turbine transfer tube/blower fan when unit is normally run, motor is standby
With or switch to generating state automatically, entering vapour pitch in each load section operation small turbine can be achieved standard-sized sheet, high-efficiency and economic
Operation.With spies such as saving equipment investment, redundant high, the raising performance driving economy of pump/blower fan power source, reduction station service power consumption rates
Point.
To reach above-mentioned purpose, the present invention is achieved using following technical scheme：
A kind of power station auxiliary vapour electric hybrid driving, electricity generation system, including small turbine；The output end of small turbine according to
Secondary connection motor and pump/blower fan, constitute the double shaft forms of motor；Or the output end of small turbine is sequentially connected pump/wind
Machine and motor drive mechanism are into the double shaft forms of pump/blower fan；The vapour source of small turbine is drawn gas by main steam turbine level Four or boiler draws gas and carried
For.
Further improve of the invention is：
Small turbine uses pure condensate formula or back pressure type small turbine.
Small turbine is coaxially connected by gear-box and clutch and motor or pump/blower fan.
It is connected between motor and pump/blower fan by shaft coupling.
Motor is connected with unit station service electrical system by high voltage bus.
A kind of power station auxiliary vapour electric hybrid driving and electricity-generating method, comprise the following steps：
1) startup stage：
If clutch is in engagement, motor starts first, and now small turbine is in halted state, motor by
Step raising speed causes rotating speed n2 to be more than rotating speed n1, and throw-out-of clutch completes start-up course；Wherein, rotating speed n1 exports for small turbine
Rotating speed of the rotating speed after gearbox speed reduction；Rotating speed n2 is the rotating speed of motor；
If clutch is in disengaged condition, pump/blower fan is directly initiated by motor, ignition of the boiler is realized；Or it is auxiliary by adjacent machine
Vapour driving small turbine starts pump/blower fan, realizes ignition of the boiler；
2) operation phase, as unit load increases, supply small turbine steam parameter is met after requirement, small turbine vapour
Source is switched to the machine；When the rotating speed n1 of small turbine is synchronous with the rotating speed n2 of motor, clutch realizes engagement capability, makes small steamer
Machine and motor are rotated together, synchronous transfer tube/blower fan；
3) stage is shut down, drives pump/blower fan to realize by small turbine or motor and shuts down, clutch is in engagement after shutdown
Or disengaged condition.
Step 2) in, small turbine enters porthole standard-sized sheet, and motor switchs to generating state.
Compared with prior art, the invention has the advantages that：
The present invention realizes the double dynamical driving of major pant item steam, electric power, improves operational reliability；Match somebody with somebody without configuring redundancy
Electronic startup pump/blower fan is put, simple system saves initial cost；Small turbine enters vapour pitch standard-sized sheet during unit actual motion, reduction
Enter vapour restriction loss, improve small turbine internal efficiency；On the premise of pump/blower fan work power consumption is met, the motor of first wife's set
Dynamotor running status is automatically changeb to, small turbine dump power is converted into electric energy and unit station service electrical system is incorporated to,
Unit power supply capacity is improved, unit station service power consumption rate is reduced.
【Brief description of the drawings】
Fig. 1 is conventional pump/blower fan driving system structure figure；
Fig. 2 is the system structure diagram of the embodiment of the present invention 1；
Fig. 3 is the system structure diagram of the embodiment of the present invention 2.
Wherein：1- small turbines；2- gear-boxes；3- shaft couplings；4- pumps/blower fan；5- clutches；6- motor.
【Embodiment】
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 2 and 3, the respectively double shaft forms of motor and the double shaft forms of pump/blower fan.
Embodiment 1
As shown in Fig. 2 pure condensate formula or back pressure type small turbine 1 by gear-box 2 and clutch 5 with motor 6 is coaxial connects
Connect, offer that small turbine vapour source is drawn gas by main steam turbine level Four or boiler draws gas, the other end of motor 6 by shaft coupling 3 and pump/
Blower fan 4 is coaxially connected, and motor 6 is connected with unit station service electrical system by high voltage bus.
Embodiment 2
As shown in figure 3, pure condensate formula or back pressure type small turbine 1 by gear-box 2 and clutch 5 with pump/blower fan 4 is coaxial connects
Connect, offer that small turbine vapour source is drawn gas by main steam turbine level Four or boiler draws gas, the other end of pump/blower fan 4 passes through shaft coupling 3 and electricity
Motivation 6 is coaxially connected.
The course of work of the present invention：
Pump/blower fan 4 can be directly initiated by former motor 6 during unit starting, can also be opened by adjacent machine auxiliary steam driving small turbine 1
Dynamic pump/blower fan 4, realizes ignition of the boiler.
As unit load increases, the machine supply small turbine 1 steam parameter is met after requirement, and small turbine vapour source is switched to
The machine.When rotating speed n1 of the output speed of small turbine 1 after the deceleration of gear-box 2 is synchronous with the rotating speed n2 of motor 6, clutch 5
Engagement capability is realized, small turbine 1 and motor 6 are rotated together, synchronous transfer tube/blower fan 4.
Under each load of unit actual motion, small turbine 1 enters vapour pitch and standard-sized sheet can be achieved, and maintains high-efficiency and economic
Operation；Small turbine 1 is exerted oneself more than during power consumption, motor 6 switchs to generating state, external output work automatically needed for pump/blower fan 4
Rate, reduces unit station service power consumption rate.
In the shutdown stage, pump/blower fan 4 can be driven to realize that clutch 5 is in after shutdown, shutdown by small turbine 1 or motor 6
Engagement or disengagement state.If clutch 5 is in engagement, when unit is again started up, motor 6 starts first again, this
When small turbine 1 be in halted state, progressively raising speed causes n2 to be more than n1 to motor 6, and clutch 5 disengages, and completes start-up course.
If clutch 5 itself is in disengaged condition, pump/blower fan start-up course is as previously described.
The principle of the present invention：
The small turbine of power station auxiliary such as pump, matched with blower can be according to unit TB points, THA operating points or Large Copacity
Operating point type selecting, coaxially connected by clutch and gear-box and motor or pump/blower fan, vapour source is drawn gas from four sections of steam turbine
Or boiler draws gas, pattern can be pure condensate formula or back pressure type.Electronic startup pump/blower fan is not reconfigured at.Can be by original during unit starting
Motor directly initiates pump/blower fan, also can start pump/blower fan by adjacent machine auxiliary steam driving small turbine；Small steamer during normal operation
The pitch of machine is shown in a fully open operation, according to small turbine type selecting situation, and former motor can realize electric work input (power consumption) or export
(generating) state；In the shutdown stage, by small turbine or motor pump/blower fan can be driven to realize and shut down.
The technological thought of above content only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within claims of the present invention
Protection domain within.
Claims (7)
1. a kind of power station auxiliary vapour electric hybrid driving, electricity generation system, it is characterised in that including small turbine (1)；Small steamer
The output end of machine (1) is sequentially connected motor (6) and pump/blower fan (4), constitutes the double shaft forms of motor；Or small turbine
(1) output end is sequentially connected pump/blower fan (4) and motor (6) constitutes the double shaft forms of pump/blower fan；The vapour of small turbine (1)
Offer that source is drawn gas by main steam turbine level Four or boiler draws gas.
2. power station auxiliary vapour electric hybrid driving according to claim 1, electricity generation system, it is characterised in that small steamer
Machine (1) uses pure condensate formula or back pressure type small turbine.
3. power station auxiliary vapour electric hybrid driving according to claim 1 or 2, electricity generation system, it is characterised in that small vapour
Turbine (1) is coaxially connected by gear-box (2) and clutch (5) and motor (6) or pump/blower fan (4).
4. power station auxiliary vapour electric hybrid driving according to claim 3, electricity generation system, it is characterised in that motor
(6) it is connected between pump/blower fan (4) by shaft coupling (3).
5. power station auxiliary vapour electric hybrid driving according to claim 1, electricity generation system, it is characterised in that motor
(6) it is connected with unit station service electrical system by high voltage bus.
6. a kind of power station auxiliary vapour electric hybrid driving of system described in use claim 1 and electricity-generating method, its feature exist
In comprising the following steps：
1) startup stage：
If clutch is in engagement, motor starts first, and now small turbine is in halted state, and motor progressively rises
Speed causes rotating speed n2 to be more than rotating speed n1, and throw-out-of clutch completes start-up course；Wherein, rotating speed n1 is small turbine output speed
Rotating speed after gearbox speed reduction；Rotating speed n2 is the rotating speed of motor；
If clutch is in disengaged condition, pump/blower fan is directly initiated by motor, ignition of the boiler is realized；Or driven by adjacent machine auxiliary steam
Dynamic small turbine starts pump/blower fan, realizes ignition of the boiler；
2) operation phase, as unit load increases, supply small turbine steam parameter is met after requirement, and small turbine vapour source is cut
To the machine；When the rotating speed n1 of small turbine is synchronous with the rotating speed n2 of motor, clutch realizes engagement capability, make small turbine and
Motor is rotated together, synchronous transfer tube/blower fan；
3) stage is shut down, drives pump/blower fan to realize by small turbine or motor and shuts down, clutch is in engagement or de- after shutdown
Open state.
7. power station auxiliary vapour electric hybrid driving according to claim 6 and electricity-generating method, it is characterised in that step 2)
In, small turbine enters porthole standard-sized sheet, and motor switchs to generating state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710231234.0A CN107131010A (en) | 2017-04-10 | 2017-04-10 | A kind of power station auxiliary vapour electric hybrid driving, electricity generation system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710231234.0A CN107131010A (en) | 2017-04-10 | 2017-04-10 | A kind of power station auxiliary vapour electric hybrid driving, electricity generation system and method |
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| CN107131010A true CN107131010A (en) | 2017-09-05 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910978A (en) * | 2017-12-25 | 2018-04-13 | 湖南同能机电科技有限公司 | A kind of double dynamical compressor and cooling-water machine system and cooling-water machine system control method |
| CN108105055A (en) * | 2017-12-25 | 2018-06-01 | 湖南同能机电科技有限公司 | A kind of double dynamical water pump and a kind of water source heat pump system |
| CN110107517A (en) * | 2019-06-21 | 2019-08-09 | 哈尔滨广瀚动力传动有限公司 | A kind of electricity drive blower shafting modernization system |
| CN110159559A (en) * | 2019-05-09 | 2019-08-23 | 国家能源集团宿迁发电有限公司 | A kind of vapour electricity is double to drive draught fan system and its progress control method |
| 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 |
| CN113236525A (en) * | 2021-06-11 | 2021-08-10 | 西安热工研究院有限公司 | Method for transforming steam-driven water feeding pump into double-fed motor driven water feeding pump and starting method |
| CN115450593A (en) * | 2022-09-14 | 2022-12-09 | 烟台杰瑞石油装备技术有限公司 | Steam-electricity double-drive system, skid-mounted equipment and steam-electricity double-drive method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910978A (en) * | 2017-12-25 | 2018-04-13 | 湖南同能机电科技有限公司 | A kind of double dynamical compressor and cooling-water machine system and cooling-water machine system control method |
| CN108105055A (en) * | 2017-12-25 | 2018-06-01 | 湖南同能机电科技有限公司 | A kind of double dynamical water pump and a kind of water source heat pump 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 |
| CN110159559A (en) * | 2019-05-09 | 2019-08-23 | 国家能源集团宿迁发电有限公司 | A kind of vapour electricity is double to drive draught fan system and its progress control method |
| CN110107517A (en) * | 2019-06-21 | 2019-08-09 | 哈尔滨广瀚动力传动有限公司 | A kind of electricity drive blower shafting modernization system |
| CN113236525A (en) * | 2021-06-11 | 2021-08-10 | 西安热工研究院有限公司 | Method for transforming steam-driven water feeding pump into double-fed motor driven water feeding pump and starting method |
| CN115450593A (en) * | 2022-09-14 | 2022-12-09 | 烟台杰瑞石油装备技术有限公司 | Steam-electricity double-drive system, skid-mounted equipment and steam-electricity double-drive method |
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Application publication date: 20170905 |