CN201420572Y - Steam turbine generator unit of coaxial drive feed water pump - Google Patents
Steam turbine generator unit of coaxial drive feed water pump Download PDFInfo
- Publication number
- CN201420572Y CN201420572Y CN2009200938064U CN200920093806U CN201420572Y CN 201420572 Y CN201420572 Y CN 201420572Y CN 2009200938064 U CN2009200938064 U CN 2009200938064U CN 200920093806 U CN200920093806 U CN 200920093806U CN 201420572 Y CN201420572 Y CN 201420572Y
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- water pump
- feed water
- steam turbine
- steam
- generator unit
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Abstract
A steam turbine generator unit of a coaxial drive feed water pump comprises a steam turbine, and a generator connected with the tail part of the steam turbine, and is characterized in that the head part of the steam turbine is connected with the feed water pump through a coupler, a split-shaft gear box, and a speed regulation mechanism. Compared with an electric feed water pump, the utility modelhas the advantages that the electricity consumption rate of a generating plant can be reduced, the investment of a large-power motor can be saved; compared with a steam-driven feed water pump, no relative steam pumping system and steam discharge cooling system are required, so that large amount of water can be saved and the system is simple. In the utility model, the feed water pump works synchronously with a host machine, so that the steam turbine generator unit cannot be impacted by external environmental factors.
Description
Technical field
The utility model belongs to engineering field, thermal power plant, especially relates to thermal power plant Turbo-generator Set and feed water pump.
Background technique
The basic functional principle of thermal power plant Turbo-generator Set is to enter steam turbine high-pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder from the superheated vapor that boiler comes successively by main steam system, and pushing turbine rotates, and rotates generating thereby drive generator.The thermal power plant of present operation, its Turbo-generator Set all adopts above-mentioned working principle.The driving mode of thermal power plant feed water pump has two kinds, and a kind of is to adopt electric motor driven electrically driven feedpump, and another kind is the steam feed pump that adopts small turbine to drive.When adopting electrically driven feedpump, its driving power occupies first of the power plant accessories, as the ratio of the power consumption of 600MW and 1000MW thermoelectric generator factory electrically driven feedpump and unit rated power up to 3～4%, account for the comprehensive power consumption rate 30～40% of full factory, the high power motor of feed water pump has improved the station service electric pressure simultaneously, has strengthened equipment investment.When adopting steam feed pump, extracted steam from turbine enters small turbine by the extraction line system, promotes small turbine and rotates, thereby drive feed water pump work, and the steam feed pump steam discharge enters systemic circulation after cooling off by vapour condenser.The consumption of cooling-water of steam feed pump steam discharge is huge, and as 600MW and 1000MW thermoelectric generator factory, 2 unit every year are with many water consumptions 90～1,400,000 tons.To sum up two of feed water pump kinds of driving mode exist the big and investment problem of higher of station service power consumption rate height or water usage.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of novel driving mode of feed water pump, and is high and the steam feed pump water usage is big and invest problem of higher to solve thermal power plant electrically driven feedpump station service power consumption rate.The technical solution of the utility model as shown in drawings, it comprise steam turbine, with steam turbine afterbody generator coupled, the head that it is characterized in that steam turbine links to each other with feed water pump by coupling, split axle gear-box, speed regulating mechanism.The utility model adopts the mode of Steam Turbine Driven feed water pump, the main feature of its driving mode is: the superheated vapor that comes from boiler enters steam turbine high-pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder successively by main steam system, pushing turbine rotates, the steam turbine afterbody drives generator, the steam turbine head drives feed water pump, realizes that steam turbine drives the method for operation of generator and feed water pump simultaneously.Split axle gear-box of the present utility model can be divided into two or more transmission shaft outputs with a main shaft input, drives two or many high rotating speed feed water pump operations.
The utility model is compared with electrically driven feedpump, can reduce auxiliary power consumption rate of power plant, saves the investment of heavy-duty motor, can reduce by 3～4% for 600MW and 1000MW unit station service power consumption rate, and the large power, electrically speculative investment can be saved up to 2,000 ten thousand yuan; Compare with steam feed pump, there are not relevant steam bleeding system and steam discharge cooling system, can save a large amount of water, system is simple, and the feed water pump operation is synchronous with main frame, additionally is not subjected to such environmental effects, for 600MW and 1000MW unit, 2 units can be economized on water 90～1,400,000 tons every year, can reduce investment simultaneously.
Description of drawings
Accompanying drawing is a mounting structure schematic representation of the present utility model.Among the figure: 1, feed water pump, 2, arrangements for speed regulation, 3, the split axle gear-box, 4, coupling, 5, steam turbine, 6, generator.
Embodiment
As shown in drawings, the steam turbine of Turbo-generator Set and generator are installed on the steam turbine basis running layer platform, generator links to each other with steam turbine afterbody output shaft by devices such as coupling, the main shaft of split axle gear-box links to each other by the output shaft of coupling with the steam turbine head, the split axle gear-box the other end has two output shafts, two output shafts link to each other with feed water pump respectively by arrangements for speed regulation, thereby the transmission of power of steam turbine is arrived feed water pump.
Claims (1)
1, the Turbo-generator Set of Driven by Coaxial feed water pump, comprise steam turbine, with steam turbine afterbody generator coupled, the head that it is characterized in that steam turbine links to each other with feed water pump by coupling, split axle gear-box, speed regulating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200938064U CN201420572Y (en) | 2009-06-12 | 2009-06-12 | Steam turbine generator unit of coaxial drive feed water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200938064U CN201420572Y (en) | 2009-06-12 | 2009-06-12 | Steam turbine generator unit of coaxial drive feed water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201420572Y true CN201420572Y (en) | 2010-03-10 |
Family
ID=41807224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200938064U Expired - Lifetime CN201420572Y (en) | 2009-06-12 | 2009-06-12 | Steam turbine generator unit of coaxial drive feed water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201420572Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397915A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Blower system speed-governed by power frequency generator and driven by straight condensing small turbine and method |
| CN103397917A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Back-pressure car driving water-feeding pump system and method adopting variable-frequency power generator for speed regulation |
| CN103397916A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Blower system speed-governed by power frequency generator and driven by back-pressure small turbine and method |
| CN104131846A (en) * | 2014-07-14 | 2014-11-05 | 国家电网公司 | Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump |
| CN105971675A (en) * | 2016-06-24 | 2016-09-28 | 大唐鸡西热电有限责任公司 | Adjustment method for preventing axial displacement of steam turbine |
| CN109458237A (en) * | 2018-12-26 | 2019-03-12 | 华电郑州机械设计研究院有限公司 | A kind of efficient ORC machine waste heat recovery group device |
| CN109505667A (en) * | 2018-12-26 | 2019-03-22 | 华电郑州机械设计研究院有限公司 | A kind of single shaft four-in-one ORC machine waste heat recovery group device |
| CN112377449A (en) * | 2020-11-13 | 2021-02-19 | 大唐石门发电有限责任公司 | Auxiliary device for centering water feed pump of small steam turbine |
-
2009
- 2009-06-12 CN CN2009200938064U patent/CN201420572Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397915A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Blower system speed-governed by power frequency generator and driven by straight condensing small turbine and method |
| CN103397917A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Back-pressure car driving water-feeding pump system and method adopting variable-frequency power generator for speed regulation |
| CN103397916A (en) * | 2013-08-13 | 2013-11-20 | 中国电力工程顾问集团华东电力设计院 | Blower system speed-governed by power frequency generator and driven by back-pressure small turbine and method |
| CN103397915B (en) * | 2013-08-13 | 2016-03-30 | 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 drive blower fan system of industrial frequency generator speed governing and method |
| CN103397916B (en) * | 2013-08-13 | 2016-03-30 | 中国电力工程顾问集团华东电力设计院有限公司 | The back pressure type small turbine drive blower fan system of industrial frequency generator speed governing and method |
| CN104131846A (en) * | 2014-07-14 | 2014-11-05 | 国家电网公司 | Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump |
| CN105971675A (en) * | 2016-06-24 | 2016-09-28 | 大唐鸡西热电有限责任公司 | Adjustment method for preventing axial displacement of steam turbine |
| CN109458237A (en) * | 2018-12-26 | 2019-03-12 | 华电郑州机械设计研究院有限公司 | A kind of efficient ORC machine waste heat recovery group device |
| CN109505667A (en) * | 2018-12-26 | 2019-03-22 | 华电郑州机械设计研究院有限公司 | A kind of single shaft four-in-one ORC machine waste heat recovery group device |
| CN112377449A (en) * | 2020-11-13 | 2021-02-19 | 大唐石门发电有限责任公司 | Auxiliary device for centering water feed pump of small steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100310 |