CN103573308B - A kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems - Google Patents
A kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems Download PDFInfo
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- CN103573308B CN103573308B CN201310559273.5A CN201310559273A CN103573308B CN 103573308 B CN103573308 B CN 103573308B CN 201310559273 A CN201310559273 A CN 201310559273A CN 103573308 B CN103573308 B CN 103573308B
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Abstract
The invention discloses a kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems, comprise vapour condenser, turbine low pressure cylinder, Steam Turbine Through IP Admission, steam turbine high-pressure cylinder and boiler, described steam turbine high-pressure cylinder correspondence connects No. 1 and No. 2 high-pressure heaters, described Steam Turbine Through IP Admission steam discharge correspondence connects No. 3 high-pressure heaters, oxygen-eliminating device and No. five low-pressure heaters, described turbine low pressure cylinder has two, a corresponding connection No. 6 low-pressure heaters, No. 8 low-pressure heaters, another corresponding connection No. 7 low-pressure heaters, No. 9 low-pressure heaters, described No. 7 low-pressure heaters are provided with low-pressure heater and drainage pump, described No. 8 low-pressure heaters, No. 9 low-pressure heaters are respectively by No. 8 drain pipes, No. 9 drain pipes are directly hydrophobic to vapour condenser.The invention has the beneficial effects as follows: backheat progression adds one-level, and the thermal efficiency is improved; Solve the problem causing may occurring when underrun blocked drain because vapor pressure is lower; Although equipment adds, operating cost is reduced, and more has Economy.
Description
Technical field
The present invention relates to fired power generating unit technical field, particularly a kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems.
Background technique
In theory, the progression of feedwater backheat is more, and the Thermal Cycling of steam turbine is more close to Carnot's cycle, and the vapour efficiency of cycle is higher, but when heating progression increases, the growth of the thermal efficiency slows down gradually, relatively benefits few, runs also more complicated.
At present, domestic 1000MW extra-supercritical unit all adopts four cylinder four steam discharge units, and Air-cooled Unit steam turbine adopts 7 grades of regenerative steams usually, and wet type cooling unit steam turbine then adopts 8 grades of regenerative steams usually.
If tried simply 8 of steam turbine grades of regenerative steam systems are brought up to 9 grades of regenerative steam systems, then be faced with a problem: the last two-stage of original 8 grades of regenerative steam systems due to vapor pressure lower, may occur blocked drain when underrun, 9 grades of these problems of regenerative steam system will be more outstanding.
Therefore, its system of 8 of a steam turbine grade backheat being bled brings up to 9 grades of backheat extract systems, just must solve the problem.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, provides a kind of improved 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems.
The technical solution used in the present invention is such: a kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems, comprise vapour condenser, turbine low pressure cylinder, Steam Turbine Through IP Admission, steam turbine high-pressure cylinder and boiler, described steam turbine
high-pressure cylindercorresponding connection No. 1 high-pressure heater and No. 2 high-pressure heaters, described medium pressure turbine correspondence connects No. 3 high-pressure heaters, oxygen-eliminating device and No. five low-pressure heaters, described turbine low pressure cylinder has two, a corresponding connection No. 6 low-pressure heaters, No. 8 low-pressure heaters, another corresponding connection No. 7 low-pressure heaters, No. 9 low-pressure heaters, described No. 7 low-pressure heaters are provided with low-pressure heater and drainage pump, and described No. 8 low-pressure heaters, No. 9 low-pressure heaters are directly hydrophobic to vapour condenser respectively by No. 8 drain pipes, No. 9 drain pipes.
As preferably, the low-pressure heater and drainage pump on described No. 7 low-pressure heaters has two.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: backheat progression adds one-level, and the thermal efficiency is improved; Solve the problem causing may occurring when underrun blocked drain because vapor pressure is lower; Although equipment adds, operating cost is reduced, and more has Economy.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present invention.
Mark in figure: 1 is No. 1 high-pressure heater, 2 is No. 2 high-pressure heaters, and 3 is No. 3 high-pressure heaters, 4 is oxygen-eliminating device, and 5 is No. 5 low-pressure heaters, and 6 is No. 6 low-pressure heaters, 7 is No. 7 low-pressure heaters, and 8 is No. 8 low-pressure heaters, and 9 is No. 9 low-pressure heaters, 10 is vapour condenser, and 11 is turbine low pressure cylinder, and 12 is Steam Turbine Through IP Admission, 13 is steam turbine high-pressure cylinder, and 14 is boiler, and 7-1 is low-pressure heater and drainage pump, 8-1 is No. 8 drain pipes, and 9-1 is No. 9 drain pipes.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment: as shown in Figure 1, a kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems, comprise vapour condenser 10, turbine low pressure cylinder 11, Steam Turbine Through IP Admission 12, steam turbine high-pressure cylinder 13 and boiler 14, described steam turbine high-pressure cylinder 13 correspondence connects No. 1 high-pressure heater 1 and No. 2 high-pressure heaters 2, described Steam Turbine Through IP Admission 12 correspondence connects No. 3 high-pressure heaters 3, oxygen-eliminating device 4 and No. five low-pressure heaters 5, described turbine low pressure cylinder 11 has two, a corresponding connection No. 6 low-pressure heaters 6, No. 8 low-pressure heaters 8, another corresponding connection No. 7 low-pressure heaters 7, No. 9 low-pressure heaters 9, described No. 7 low-pressure heaters 7 are provided with two low-pressure heater and drainage pump 7-1, described No. 8 low-pressure heaters 8, No. 9 low-pressure heaters 9 are respectively by No. 8 drain pipe 8-1, No. 9 drain pipe 9-1 are directly hydrophobic to vapour condenser 10.
Low-pressure heater and drainage pump 7-1 on described No. 7 low-pressure heaters 7 has two.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems, comprise vapour condenser (10), turbine low pressure cylinder (11), Steam Turbine Through IP Admission (12), steam turbine high-pressure cylinder (13) and boiler (14), described steam turbine high-pressure cylinder (13) correspondence connects No. 1 high-pressure heater (1) and No. 2 high-pressure heaters (2), described Steam Turbine Through IP Admission (12) correspondence connects No. 3 high-pressure heaters (3), oxygen-eliminating device (4) and No. five low-pressure heaters (5), it is characterized in that: described turbine low pressure cylinder (11) has two, a corresponding connection No. 6 low-pressure heaters (6), No. 8 low-pressure heaters (8), another corresponding connection No. 7 low-pressure heaters (7), No. 9 low-pressure heaters (9), described No. 7 low-pressure heaters (7) are provided with low-pressure heater and drainage pump (7-1), described No. 8 low-pressure heaters (8), No. 9 low-pressure heaters (9) are respectively by No. 8 drain pipes (8-1), No. 9 drain pipes (9-1) are directly hydrophobic to vapour condenser (10).
2. a kind of 1000MW fired power generating unit steam turbine according to claim 19 grades of regenerative steam systems, is characterized in that: the low-pressure heater and drainage pump (7-1) on described No. 7 low-pressure heaters (7) has two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310559273.5A CN103573308B (en) | 2013-11-12 | 2013-11-12 | A kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems |
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| CN201310559273.5A CN103573308B (en) | 2013-11-12 | 2013-11-12 | A kind of 1000MW fired power generating unit steam turbine 9 grades of regenerative steam systems |
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| CN103573308A CN103573308A (en) | 2014-02-12 |
| CN103573308B true CN103573308B (en) | 2015-09-09 |
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| CN104061564B (en) * | 2014-07-16 | 2016-06-01 | 中国电力工程顾问集团华东电力设计院有限公司 | Across No. 0 high pressure heater system of unit backheat |
| CN112303604B (en) * | 2020-10-29 | 2022-09-13 | 西安热工研究院有限公司 | Economizer temperature governing system that unit start-up process denitration was put into |
| CN113404563B (en) * | 2021-06-18 | 2022-08-02 | 东方电气集团东方汽轮机有限公司 | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system |
| CN115750002A (en) * | 2022-12-16 | 2023-03-07 | 国能龙源蓝天节能技术有限公司上海分公司 | Pressure mixed-distribution and grading multi-effect regenerative system of thermal power generating unit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0299555A1 (en) * | 1987-07-03 | 1989-01-18 | Waste Power B.V. | Method and apparatus for generating electrical and/or mechanical energy from at least a low-grade fuel |
| JPH07507333A (en) * | 1991-02-15 | 1995-08-10 | ファウエーアーゲー・フェルアイニヒテ・エネルギー ウエルケ・アクチェンゲゼルシャフト | Coal selection method for gas, steam and combination processes |
| CN1793617A (en) * | 2005-12-28 | 2006-06-28 | 上海电力学院 | Multi-grade using backheating drain residual heat generator of thermal power generator set |
| CN101260815A (en) * | 2008-04-24 | 2008-09-10 | 华北电力大学 | Paraboloid trough type solar heat-collector auxiliary coal-burning boiler mixing heat power generation system |
| CN101761915A (en) * | 2009-12-11 | 2010-06-30 | 华北电力大学（保定） | Combined cycle generation system of high-pressure oxygen-enriched combustion fluidized bed |
| CN101892877A (en) * | 2010-07-20 | 2010-11-24 | 华北电力大学（保定） | Renewable energy resource assistant coal hybrid power generation system |
| CN103277155A (en) * | 2013-05-20 | 2013-09-04 | 华北电力大学 | Brown coal pre-drying-air preheating-waste heat utilization composite coal-fired power generation system |
| CN203531980U (en) * | 2013-11-12 | 2014-04-09 | 中国电力工程顾问集团西南电力设计院 | 1000MW thermal power unit turbine grade-9 regenerative extraction steam system |
-
2013
- 2013-11-12 CN CN201310559273.5A patent/CN103573308B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0299555A1 (en) * | 1987-07-03 | 1989-01-18 | Waste Power B.V. | Method and apparatus for generating electrical and/or mechanical energy from at least a low-grade fuel |
| JPH07507333A (en) * | 1991-02-15 | 1995-08-10 | ファウエーアーゲー・フェルアイニヒテ・エネルギー ウエルケ・アクチェンゲゼルシャフト | Coal selection method for gas, steam and combination processes |
| CN1793617A (en) * | 2005-12-28 | 2006-06-28 | 上海电力学院 | Multi-grade using backheating drain residual heat generator of thermal power generator set |
| CN101260815A (en) * | 2008-04-24 | 2008-09-10 | 华北电力大学 | Paraboloid trough type solar heat-collector auxiliary coal-burning boiler mixing heat power generation system |
| CN101761915A (en) * | 2009-12-11 | 2010-06-30 | 华北电力大学（保定） | Combined cycle generation system of high-pressure oxygen-enriched combustion fluidized bed |
| CN101892877A (en) * | 2010-07-20 | 2010-11-24 | 华北电力大学（保定） | Renewable energy resource assistant coal hybrid power generation system |
| CN103277155A (en) * | 2013-05-20 | 2013-09-04 | 华北电力大学 | Brown coal pre-drying-air preheating-waste heat utilization composite coal-fired power generation system |
| CN203531980U (en) * | 2013-11-12 | 2014-04-09 | 中国电力工程顾问集团西南电力设计院 | 1000MW thermal power unit turbine grade-9 regenerative extraction steam system |
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Address after: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Applicant after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Address before: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Applicant before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
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