CN104131846A - Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump - Google Patents
Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump Download PDFInfo
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- CN104131846A CN104131846A CN201410334552.6A CN201410334552A CN104131846A CN 104131846 A CN104131846 A CN 104131846A CN 201410334552 A CN201410334552 A CN 201410334552A CN 104131846 A CN104131846 A CN 104131846A
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Abstract
The invention relates to the field of heat energy power machines, in particular to a steam source automatic switching device and method applied to a 300 MW turboset steam-driven water feed pump. The problem that an existing 300 MW turboset electrically-driven water feed pump is long in water feed time, and electricity is wasted is solved. An electric valve is arranged at the steam outlet end of a 300 MW turboset, the electric valve is communicated with a pneumatic check valve through a steam guide pipe, the pneumatic check valve is communicated with a check valve through a steam guide pipe, and the steam guide pipe passing through the check valve is communicated with a steam outlet pipe of an auxiliary steam connecting box, one end of a first electric valve and one end of a second electric valve at the same time. According to the double-machine operating method applied to the 300 MW turboset, tripping of a first small turbine or a second small turbine is shielded, and the small turbines are directly used for replacing the electrically-driven water feed pump to feed water to a boiler. When main engine protection is misoperated, one small turbine does not trip due to shielding, and non-linkage starting of the water feed pump is achieved. The device and method are suitable for steam source automatic switching of the 300 MW turboset steam-driven water feed pump.
Description
Technical field
The present invention relates to thermal power machinery field.
Background technique
Turbo-generator Set feed water pump is the visual plant to boiler feed water, by initial designing requirement, when water supply system is normally moved, by the steam feed pump of two 50% capacity, provides the required whole confluents of boiler and spray water flux etc.Separately establish the electrically driven feedpump of 30% capacity as the stand by pump of steam feed pump.When if wherein any steam feed pump breaks down, electrically driven feedpump drops into and steam feed pump paired running automatically, and now unit can be with 80% load; When unit starting, adopt electrically driven feedpump to supply water, when unit load rises to 30%, switch to steam feed pump operation, the working steam vapour source of steam feed pump from four sections, main frame, draw gas and in auxiliary header, vapor pressure is lower.Standby steam source is from hot cold junction steam again, and vapor pressure is higher.Work vapour source and standby steam source are controlled by regulator, and the switching in vapour source has been controlled automatically by regulator.The impact that this kind of design produces power plant: 1. energy-conservation aspect: in the normal start-up course of unit, from boiler black furnace, water is to low-load, always with water on electrically driven feedpump, when unit load reaches 90MW, four take out pressure reach 0.3MPa after, the steam feed pump of just getting excited, starts to adopt steam feed pump to boiler water filling; After unit orderly closedown, the upper water-cooled stove of boiler, is also to need electrically driven feedpump to complete.Therefore, on the boiler black furnace in unit starting stage, water to these two stages of boiler water filling black furnace of loading after 90MW and compressor emergency shutdown all complete by electrically driven feedpump, cause a large amount of station service wastes.2. operation aspect: under accident conditions, after boiler MFT action, steam turbine main frame, steam feed pump all trip, electrically driven feedpump interlock simultaneously.If Host Protection malfunction or artificial misoperation etc.; while needing to start steam turbine fast; after steam feed pump tripping operation; need to four take out pressure and reach 0.3MPa after; the steam feed pump of just getting excited; from impulsion steam feed pump to 3100r/min, need at the soonest nearly 1 hours, affected the quick startup rate of load application of unit.3. because of the machine four is taken out and between auxiliary header without non-return flap, only have when four take out pressure and reach 0.4MPa after, could really realize the machine four and take out drive feed water pump.
Summary of the invention
The present invention is in order to solve the electricity consumption waste problem that the existing 300MW steam turbine set electrically driven feedpump feedwater time is long and cause, and has proposed to be applied to vapour source automatic COMM communication and the method for 300MW steam turbine set steam feed pump.
The vapour source automatic COMM communication that is applied to 300MW steam turbine set steam feed pump of the present invention, this application of installation is in 300MW steam turbine set steam feed pump, and this device comprises 300MW power generator turbine intermediate pressure cylinder, electric valve, pneumatic non-return flap, non-return flap, auxiliary vapour header, a small turbine, an electric valve, No. two electric valves and No. two small turbines;
The steam output end of 300MW power generator turbine intermediate pressure cylinder is provided with electric valve, electric valve is by steam guiding tube and pneumatic non-return flap conducting, pneumatic non-return flap is by steam guiding tube and non-return flap conducting, steam guiding tube while after non-return flap and one end conducting of the steam outlet pipe of auxiliary vapour header, one end of an electric valve and No. two electric valves, the other end of an electric valve is communicated with the steam inlet of a small turbine, and the steam inlet of the other end of No. two small turbines of the other end of No. two electric valves is communicated with.
Adopt the above-mentioned automatic switching method that is applied to the vapour source automatic COMM communication of 300MW steam turbine set steam feed pump; :
Be applied to 300MW steam turbine set duplex running method:
Open 300MW power generator turbine intermediate pressure cylinder and auxiliary vapour header to small turbine, in 300MW steam turbine set start-up course, utilize the vapour source of auxiliary vapour header output to carry out red switch driving steam feed pump to boiler water filling to a small turbine, when what 300MW power generator turbine intermediate pressure cylinder provided, four automatically switch to small turbine of pressure impulsion that 300MW power generator turbine intermediate pressure cylinder produces while taking out pressure higher than auxiliary vapour header pressure and drive steam feed pump to boiler water filling, when the load of 300MW power generator turbine intermediate pressure cylinder reaches 100MW, the small turbine paired running of getting excited No. two, in stopping process, shield the tripping operation of a small turbine or No. two small turbines, directly with small turbine, replace electrically driven feedpump to boiler water filling, when Host Protection malfunction, while starting steam turbine, a small turbine, because of not tripping operation of shielding, is realized not joining and is opened electrically driven feedpump.
Be applied to 300MW steam turbine set unit operation method:
300MW steam turbine set, water on electrically driven feedpump, from boiler black furnace, water is to low-load, when 300MW power generator turbine intermediate pressure cylinder load reaches 90MW, 300MW power generator turbine intermediate pressure cylinder provide four take out pressure and reach 0.3MPa after, get excited a small turbine or No. two small turbines drive feed water pumps to boiler water filling; When 300MW power generator turbine intermediate pressure cylinder load reaches 150MW, another small turbine work of getting excited; In stopping process, the MFT of a small turbine and No. two small turbines tripping operation is all come into operation, after main frame tripping operation, boiler trip action, and 300MW steam turbine set shaft seal steam, two steam feed pumps all trip, and electrically driven feedpump connection opens.
Between 300MW power generator turbine intermediate pressure cylinder of the present invention and auxiliary vapour header vapour source, increase by a non-return flap.Be achieved as follows function: unit starting overall process realizes steam-operating small turbine and drives feed water pump to boiler water filling.2. duplex running, under unit accident conditions, the MFT of a small turbine of shielding, still can not join and open electrically driven feedpump.During unit operation, two small turbine MFT all drop into, and after emergency stop valve trip, electrically driven feedpump connection opens, and guarantees boss rod gland sealing steam supply.Safety has been saved again a large amount of station services.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention.
Embodiment
Embodiment one, in conjunction with Fig. 1, present embodiment is described, the vapour source automatic COMM communication of 300MW steam turbine set steam feed pump described in present embodiment, this application of installation is in 300MW steam turbine set steam feed pump, and this device comprises 300MW power generator turbine intermediate pressure cylinder 1, electric valve 2, pneumatic non-return flap 3, non-return flap 4, auxiliary vapour header 5, small turbine 6, electric valve 7, No. two electric valves 8 and No. two small turbines 9;
The steam output end of 300MW power generator turbine intermediate pressure cylinder 1 is provided with electric valve 2, electric valve 2 is by steam guiding tube and 3 conductings of pneumatic non-return flap, pneumatic non-return flap 3 is by steam guiding tube and non-return flap 4 conductings, steam guiding tube while after non-return flap 4 and one end conducting of the steam outlet pipe of auxiliary vapour header 5, one end of an electric valve 7 and No. two electric valves 8, the other end of an electric valve 7 is communicated with the steam inlet of a small turbine 6, and the steam inlet of the other end of No. two small turbines 9 of the other end of No. two electric valves 8 is communicated with.
The automatic switching method of the vapour source automatic COMM communication that is applied to 300MW steam turbine set steam feed pump described in embodiment two, employing embodiment one; It is to be applied to 300MW steam turbine set steam feed pump duplex running method:
Open 300MW power generator turbine intermediate pressure cylinder 1 and 5 to small turbines 6 of auxiliary vapour header, in 300MW steam turbine set start-up course, utilize the vapour source of auxiliary vapour header 5 outputs to carry out red switch driving steam feed pump to boiler water filling to a small turbine 6, when what 300MW power generator turbine intermediate pressure cylinder 1 provided, four automatically switch to small turbine of pressure impulsion 6 that 300MW power generator turbine intermediate pressure cylinder 1 produces while taking out pressure higher than auxiliary vapour header 5 pressure and drive steam feed pumps to boiler water filling, when the load of 300MW power generator turbine intermediate pressure cylinder 1 reaches 100MW, small turbine 9 paired runnings of getting excited No. two, in stopping process, shield the tripping operation of a small turbine 6 or No. two small turbines 9, directly with small turbine, replace electrically driven feedpump to boiler water filling, when Host Protection malfunction, while starting steam turbine, a small turbine, because of not tripping operation of shielding, is realized not joining and is opened electrically driven feedpump.
The automatic switching method of the vapour source automatic COMM communication that is applied to 300MW steam turbine set steam feed pump described in embodiment three, employing embodiment one; It is to be applied to 300MW steam turbine set unit operation method:
300MW steam turbine set, water on electrically driven feedpump, from boiler black furnace, water is to low-load, when 300MW power generator turbine intermediate pressure cylinder 1 load reaches 90MW, 300MW power generator turbine intermediate pressure cylinder 1 provide four take out pressure and reach 0.3MPa after, get excited a small turbine 6 or No. two small turbines 9 drive feed water pumps to boiler water filling; When 300MW power generator turbine intermediate pressure cylinder 1 load reaches 150MW, another small turbine work of getting excited; In stopping process, the MFT of a small turbine 6 and No. two small turbines 9 tripping operation is all come into operation, after main frame tripping operation, boiler trip action, and 300MW steam turbine set shaft seal steam, two steam feed pumps all trip, and electrically driven feedpump connection opens.
Claims (3)
1. be applied to the vapour source automatic COMM communication of 300MW steam turbine set steam feed pump, this application of installation is in 300MW steam turbine set steam feed pump, it is characterized in that, this device comprises 300MW power generator turbine intermediate pressure cylinder (1), electric valve (2), pneumatic non-return flap (3), non-return flap (4), auxiliary vapour header (5), a small turbine (6), an electric valve (7), No. two electric valves (8) and No. two small turbines (9);
The steam output end of 300MW power generator turbine intermediate pressure cylinder (1) is provided with electric valve (2), electric valve (2) is by steam guiding tube and pneumatic non-return flap (3) conducting, pneumatic non-return flap (3) is by steam guiding tube and non-return flap (4) conducting, steam guiding tube while after non-return flap (4) and the steam outlet pipe of auxiliary vapour header (5), one end conducting of one end of an electric valve (7) and No. two electric valves (8), the other end of an electric valve (7) is communicated with the steam inlet of a small turbine (6), the steam inlet of the other end of No. two small turbines of the other end (9) No. two electric valves (8)) is communicated with.
2. adopt the automatic switching method of the vapour source automatic COMM communication of 300MW steam turbine set steam feed pump claimed in claim 1, it is characterized in that, it is to be applied to 300MW steam turbine set duplex running method:
Open 300MW power generator turbine intermediate pressure cylinder (1) and auxiliary vapour header (5) to a small turbine (6), in 300MW steam turbine set start-up course, utilize the vapour source of auxiliary vapour header (5) output to carry out red switch driving steam feed pump to boiler water filling to a small turbine (6), when what 300MW power generator turbine intermediate pressure cylinder (1) provided, four automatically switch to the pressure small turbine of impulsion (6) that 300MW power generator turbine intermediate pressure cylinder (1) produces while taking out pressure higher than auxiliary vapour header (5) pressure and drive steam feed pump to boiler water filling, when the load of 300MW power generator turbine intermediate pressure cylinder (1) reaches 100MW, No. two small turbines (9) paired running of getting excited, in stopping process, shield the tripping operation of a small turbine (6) or No. two small turbines (9), directly with small turbine, replace electrically driven feedpump to boiler water filling, when Host Protection malfunction, while starting steam turbine, a small turbine, because of not tripping operation of shielding, is realized not joining and is opened electrically driven feedpump.
3. adopt the automatic switching method of the vapour source automatic COMM communication of 300MW steam turbine set steam feed pump claimed in claim 1, it is characterized in that, it is to be applied to 300MW steam turbine set unit operation method:
300MW steam turbine set, water on electrically driven feedpump, from boiler black furnace, water is to low-load, when 300MW power generator turbine intermediate pressure cylinder (1) load reaches 90MW, 300MW power generator turbine intermediate pressure cylinder (1) provide four take out pressure and reach 0.3MPa after, get excited a small turbine (6) or No. two small turbines (9) drive feed water pump to boiler water filling; When 300MW power generator turbine intermediate pressure cylinder (1) load reaches 150MW, another small turbine work of getting excited; In stopping process, the MFT of a small turbine (6) and No. two small turbines (9) tripping operation is all come into operation, after main frame tripping operation, boiler trip action, and 300MW steam turbine set shaft seal steam, two steam feed pumps all trip, and electrically driven feedpump connection opens.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410334552.6A CN104131846A (en) | 2014-07-14 | 2014-07-14 | Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump |
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| CN201410334552.6A CN104131846A (en) | 2014-07-14 | 2014-07-14 | Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296408A (en) * | 2018-09-18 | 2019-02-01 | 国电南京电力试验研究有限公司 | One kind giving mercury vapour turbine vapour source method for handover control |
| CN110985137A (en) * | 2019-11-04 | 2020-04-10 | 中国能源建设集团华东电力试验研究院有限公司 | 660MW supercritical unit water supply system steam flow balance control device and control method |
| CN111503621A (en) * | 2020-04-07 | 2020-08-07 | 内蒙古锦联铝材有限公司 | Method for starting steam pump in whole-course application of steam turbine generator unit |
| CN112943387A (en) * | 2021-04-02 | 2021-06-11 | 浙江浙能兰溪发电有限责任公司 | Steam source control method and steam source control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3194020A (en) * | 1963-03-25 | 1965-07-13 | Combustion Eng | Method and apparatus relating to vapor generation |
| US4173124A (en) * | 1977-02-08 | 1979-11-06 | Tokyo Shibaura Kenki Kabushiki Kaisha | Boiler feed water pump control systems |
| CN201420572Y (en) * | 2009-06-12 | 2010-03-10 | 中国电力工程顾问集团东北电力设计院 | Steam turbine generator unit of coaxial drive feed water pump |
| CN101709874A (en) * | 2009-12-11 | 2010-05-19 | 云南大唐国际红河发电有限责任公司 | Starting method of 300000KW subcritical unit without electric pump |
| CN102252312A (en) * | 2011-05-16 | 2011-11-23 | 上海发电设备成套设计研究院 | Full-process automatic control system for supercritical unit water supply system |
-
2014
- 2014-07-14 CN CN201410334552.6A patent/CN104131846A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3194020A (en) * | 1963-03-25 | 1965-07-13 | Combustion Eng | Method and apparatus relating to vapor generation |
| US4173124A (en) * | 1977-02-08 | 1979-11-06 | Tokyo Shibaura Kenki Kabushiki Kaisha | Boiler feed water pump control systems |
| CN201420572Y (en) * | 2009-06-12 | 2010-03-10 | 中国电力工程顾问集团东北电力设计院 | Steam turbine generator unit of coaxial drive feed water pump |
| CN101709874A (en) * | 2009-12-11 | 2010-05-19 | 云南大唐国际红河发电有限责任公司 | Starting method of 300000KW subcritical unit without electric pump |
| CN102252312A (en) * | 2011-05-16 | 2011-11-23 | 上海发电设备成套设计研究院 | Full-process automatic control system for supercritical unit water supply system |
Non-Patent Citations (3)
| Title |
|---|
| 李建春，樊印龙: "《汽动给水泵实现大型汽轮机组启停的安全性分析》", 《浙江电力》 * |
| 马焕军等: "《300MW汽轮发电机组无电泵启动方式的探讨》", 《江西电力》 * |
| 马焕军等: "《300MW汽轮发电机组无电泵启动方式的探讨》", 《江西电力》, no. 5, 31 October 2002 (2002-10-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296408A (en) * | 2018-09-18 | 2019-02-01 | 国电南京电力试验研究有限公司 | One kind giving mercury vapour turbine vapour source method for handover control |
| CN109296408B (en) * | 2018-09-18 | 2019-08-06 | 国电南京电力试验研究有限公司 | One kind giving mercury vapour turbine vapour source method for handover control |
| CN110985137A (en) * | 2019-11-04 | 2020-04-10 | 中国能源建设集团华东电力试验研究院有限公司 | 660MW supercritical unit water supply system steam flow balance control device and control method |
| CN111503621A (en) * | 2020-04-07 | 2020-08-07 | 内蒙古锦联铝材有限公司 | Method for starting steam pump in whole-course application of steam turbine generator unit |
| CN112943387A (en) * | 2021-04-02 | 2021-06-11 | 浙江浙能兰溪发电有限责任公司 | Steam source control method and steam source control device |
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Application publication date: 20141105 |